.audio-playback-notice{position:fixed;bottom:24px;left:50%;transform:translate(-50%);z-index:300;width:calc(100% - 32px);max-width:540px;box-sizing:border-box;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;border:1px solid var(--line);border-radius:12px;color:var(--fg);background:var(--card);box-shadow:0 8px 30px rgba(0,0,0,.2);font-size:16px;line-height:1.5}.audio-playback-notice>span{flex:1 1 230px}.audio-playback-notice>div{display:flex;flex-wrap:wrap;gap:8px}.audio-playback-notice button,.audio-playback-notice a{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:8px 12px;border:1px solid var(--pink-deep, var(--gold-deep));border-radius:9px;color:var(--pink-deep, var(--gold-deep));background:var(--card);font:inherit;font-weight:700;text-decoration:none;cursor:pointer}.audio-playback-notice button{color:#fff;background:var(--pink-deep, var(--gold-deep))}.membership-entry{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:28px 32px;margin:24px 0 32px;border:1px solid #d6b47e;border-radius:20px;background:#fff8e9;color:#65421f}.membership-entry h2{margin:0 0 10px;font-family:Songti SC,STSong,serif;font-size:28px}.membership-entry p{margin:0;line-height:1.7;font-size:16px}.membership-entry a{display:inline-flex;align-items:center;justify-content:center;gap:16px;min-height:52px;padding:12px 22px;border-radius:12px;background:#8c5a2a;color:#fff;text-decoration:none;font-size:18px;font-weight:700;white-space:nowrap}.membership-entry a:focus-visible{outline:3px solid #c99945;outline-offset:4px}.membership-courses{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:22px 0}.membership-courses span{display:flex;flex-direction:column;gap:6px;padding:12px;border-radius:10px;background:#f8eddb;color:#624326}.membership-courses b{font-size:17px}.membership-courses small{font-size:14px;line-height:1.5}.membership-old-toggle{display:flex;align-items:center;gap:10px;font-size:16px;min-height:44px}.membership-old-toggle input{width:20px;height:20px;accent-color:#95612d}.membership-return{text-decoration:none;box-sizing:border-box}.membership-page .auth-preview-submit{height:auto;min-height:58px;padding:12px 16px;gap:10px}.membership-page .auth-preview-submit>span{min-width:0;white-space:normal;line-height:1.4}@media (max-width:600px){.membership-entry{display:block;padding:24px 20px}.membership-entry h2{font-size:25px}.membership-entry a{display:flex;margin-top:18px;white-space:normal;font-size:17px}.membership-courses b{font-size:16px}.membership-courses small{font-size:13px}}.membership-page{--bg:#f4effb;--bg2:#eee3f7;--fg:#372347;--muted:#7c668c;--line:#ddcbe9;--gold-deep:#754ba3;background:#352449;color:#372347;position:absolute;top:49px;bottom:auto;min-height:calc(100dvh - 49px);overflow:visible}.membership-page .auth-preview-shell{border-color:#c5acd9;display:grid;grid-template-columns:52% 48%;width:min(1280px,calc(100% - 64px));max-width:1440px;min-height:850px;margin:28px auto;border-radius:28px;overflow:hidden}.membership-page .auth-preview-story{position:relative;min-height:850px;height:auto;background:#39294b;border:0}.membership-page .auth-preview-story>img{display:block;position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;object-fit:cover;object-position:50% 34%}.membership-page .auth-preview-story-shade{display:block;background:linear-gradient(180deg,rgba(41,24,62,.16),transparent 36%,transparent 48%,rgba(236,221,245,.45) 74%,#e9d7f0)}.membership-page .auth-preview-brand{display:block;position:absolute;right:auto;background:rgba(252,245,255,.88);border:1px solid #d4b681;border-radius:14px;padding:12px 16px;color:#4b2f61;top:28px;left:28px}.membership-page .auth-preview-brand small{color:#785286}.membership-page .auth-preview-story-copy{display:block;position:absolute;left:36px;right:36px;bottom:40px}.membership-page .auth-preview-story-copy h1{font-family:Songti SC,STSong,serif;color:#4c2863;background:none;-webkit-text-fill-color:#4c2863;text-shadow:none;font-size:46px;line-height:1.35}.membership-page .auth-preview-kicker{color:#765095;font-size:17px}.membership-page .auth-preview-story-copy>p:not(.auth-preview-kicker){color:#654375}.membership-page .auth-preview-account{background:#fcf8ff;padding:40px 44px;min-height:0}.membership-page .auth-preview-account-head p,.membership-page .auth-preview-forgot{color:#774b9a}.membership-page .auth-preview-account-head h2{font-family:Songti SC,STSong,serif;color:#45285b}.membership-page .auth-preview-tabs{border-color:#d7c0e4;background:#eee1f4}.membership-page .auth-preview-tabs button{color:#856b95}.membership-page .auth-preview-tabs button.is-active{background:#fffafd;color:#73449b}.membership-page .auth-field input,.membership-page .auth-field select{border-color:#d7c3e4;background:#fffafd;color:#492e5e}.membership-page .auth-field input::placeholder{color:#a08aaf}.membership-page .auth-field input:focus-visible,.membership-page .auth-field select:focus-visible{border-color:#956ab4;outline-color:#956ab4}.membership-page .auth-preview-submit{border:1px solid #704391;background:linear-gradient(120deg,#8657ad,#613c87);color:#fff;box-shadow:0 8px 20px rgba(89,49,116,.16)}.membership-page .auth-preview-submit b{background:#e5c58c;color:#5f3874}.membership-page .membership-courses span{background:#f0e5f7;color:#684280}.membership-page .auth-preview-sync,.membership-page .unified-link{border-color:#d9c4e4}.membership-page .auth-preview-sync b,.membership-page .auth-preview-sync>span{color:#80638e}.membership-page .membership-old-toggle input{accent-color:#8051a2}.heart-book-fullsite{--book-color:#71499a;--book-soft:#f1e7fb;border-color:#ba9bcc;box-shadow:0 5px 18px rgba(108,73,142,.11)}.membership-cover-title{position:absolute;left:5%;right:5%;bottom:7%;text-align:center;display:flex;flex-direction:column;gap:7px;color:#57306f}.membership-cover-title b{font-family:Songti SC,STSong,serif;font-size:clamp(22px,2.4vw,34px);line-height:1.25;text-shadow:0 1px #fff7ff}.membership-cover-title small{font-size:12px;font-weight:700;line-height:1.4}.heart-catalog-membership .heart-book-grid{grid-template-columns:repeat(5,minmax(0,1fr));gap:16px}.heart-catalog-membership .heart-tabs{grid-template-columns:repeat(6,minmax(0,1fr))}.catalog-activation-guide{padding:15px 18px;border:1px solid #ded0eb;border-radius:12px;background:#f8f3fc;color:#6a4f7b;font-size:16px;line-height:1.7;margin:0 0 20px}@media (max-width:1200px) and (min-width:1001px){.heart-catalog-membership .heart-book-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (max-width:1000px){.heart-catalog-membership .heart-book-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:900px){.membership-page .auth-preview-shell{display:block;width:100%;min-height:0;margin:0;border:0;border-radius:0}.membership-page .auth-preview-story{height:210px;min-height:0}.membership-page .auth-preview-account{padding:28px 24px}.membership-page .auth-preview-story-copy,.membership-page .auth-preview-brand,.membership-page .auth-preview-story-shade{display:none}.membership-page .auth-preview-story>img{object-position:50% 0%}}@media (max-width:700px){.heart-catalog-membership .heart-book-grid{grid-template-columns:minmax(0,1fr)}.heart-catalog-membership .heart-tabs{grid-template-columns:repeat(3,minmax(0,1fr))}.membership-cover-title b{font-size:23px}.membership-cover-title small{font-size:10px}.catalog-activation-guide{font-size:15px;padding:12px 14px}}@media (min-width:601px) and (max-width:900px){.membership-page .auth-preview-story{height:360px}.membership-page .auth-preview-story>img{object-position:50% 8%}}.membership-page .membership-help{margin-top:8px}.membership-page .membership-help .activation-guide-launcher{font-size:14px;font-weight:600;min-height:44px;padding:0;text-decoration:none}.membership-page .membership-permanent-note{margin:14px 0 0;font-size:14px;line-height:1.5}@media (min-width:901px) and (orientation:landscape){.membership-page .auth-preview-shell{grid-template-columns:46% 54%;width:min(1280px,calc(100% - 32px));min-height:0;margin:16px auto}.membership-page .auth-preview-story{min-height:0}.membership-page .auth-preview-account{padding:24px 28px}.membership-page .auth-preview-account-head p{font-size:15px;margin:0 0 4px}.membership-page .auth-preview-account-head h2{font-size:32px;line-height:1.3}.membership-page .auth-preview-account-head>span{font-size:16px;line-height:1.5;margin-top:8px}.membership-page .auth-preview-tabs{margin:18px 0;min-height:0;padding:4px}.membership-page .auth-preview-tabs button{height:44px;font-size:17px}.membership-page .membership-form{gap:16px}.membership-page .membership-form-register{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:16px}.membership-page .membership-form-register>.auth-preview-submit{grid-column:1/-1}.membership-page .auth-field{gap:8px;min-width:0}.membership-page .auth-field-head{gap:6px;min-height:24px}.membership-page .auth-field-head b{font-size:16px}.membership-page .auth-field-head small{display:none}.membership-page .auth-field input{height:52px;font-size:16px;padding:0 12px}.membership-page .auth-preview-submit{min-height:54px;font-size:20px;margin-top:4px}.membership-page .auth-preview-submit b{flex-shrink:0}.membership-page .auth-preview-story-copy{left:28px;right:28px;bottom:28px}.membership-page .auth-preview-story-copy h1{font-size:36px}.membership-page .auth-preview-story-copy>p:not(.auth-preview-kicker){font-size:16px}}@media (min-width:901px) and (orientation:landscape) and (max-height:720px){.membership-page .auth-preview-shell{margin:8px auto}.membership-page .auth-preview-account{padding:18px 24px}.membership-page .auth-preview-account-head h2{font-size:30px}.membership-page .auth-preview-tabs{margin:12px 0}.membership-page .membership-form{gap:12px}.membership-page .auth-field input{height:48px}.membership-page .membership-permanent-note{margin-top:10px}.membership-page .membership-help{margin-top:0}}.legacy-ui .membership-page.unified-account-page{position:absolute;top:49px;min-height:calc(100vh - 49px)}@media (min-width:901px) and (orientation:landscape){.legacy-ui .membership-page .auth-preview-shell{display:flex;align-items:stretch}.legacy-ui .membership-page .auth-preview-story{width:46%;flex:0 0 46%}.legacy-ui .membership-page .auth-preview-account{width:54%;flex:0 0 54%;box-sizing:border-box}.legacy-ui .membership-page .membership-form-register{display:flex;flex-wrap:wrap;margin:0 -8px}.legacy-ui .membership-page .membership-form-register>.auth-field{width:calc(50% - 16px);flex:0 0 calc(50% - 16px);box-sizing:border-box;margin:0 8px 12px}.legacy-ui .membership-page .membership-form-register>.auth-preview-submit{width:calc(100% - 16px);margin:4px 8px 0}}.activation-guide-launcher{display:inline-flex;align-items:center;min-height:44px;padding:8px 0;border:0;background:transparent;color:#71499a;font:700 16px/1.5 system-ui;text-decoration:underline;text-underline-offset:3px;cursor:pointer}.activation-guide-shade{position:fixed;top:0;right:0;bottom:0;left:0;z-index:20000;background:rgba(35,23,32,.5);display:flex;align-items:center;justify-content:center;padding:20px;box-sizing:border-box}.activation-guide-dialog{position:relative;width:100%;max-width:520px;max-height:85vh;overflow:auto;box-sizing:border-box;padding:30px 24px 24px;border-radius:20px;background:#fffaf8;color:#493426;box-shadow:0 14px 60px rgba(0,0,0,.2);font:16px/1.7 system-ui}.activation-guide-dialog h2{font-size:23px;line-height:1.4;margin:8px 28px 18px 0}.activation-guide-dialog p{font-size:16px;line-height:1.7;margin:12px 0}.activation-guide-close{position:absolute;top:8px;right:8px;width:44px;height:44px;display:grid;place-items:center;padding:0;border:0;border-radius:50%;background:transparent;color:#76528b;font-size:28px;line-height:1;cursor:pointer}.activation-guide-dialog:focus{outline:none}.activation-guide-products{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:18px 0}.activation-guide-products>a,.activation-guide-upcoming{position:relative;display:flex;flex-direction:column;gap:5px;justify-content:center;min-height:76px;box-sizing:border-box;padding:12px 14px;border:1px solid #e4d8e9;border-radius:11px;text-decoration:none;line-height:1.5}.activation-guide-products>a{padding-right:32px}.activation-guide-products strong{font-size:18px}.activation-guide-products small{font-size:14px;line-height:1.5}.activation-guide-products>a>span{position:absolute;right:12px;top:50%;transform:translateY(-50%);font-size:20px}.activation-guide-fullsite{grid-column:1/-1}.activation-guide-upcoming{opacity:.75}.activation-guide-dialog .activation-guide-rule{font-size:15px;color:#765e81}.activation-guide-confirm{width:100%;min-height:48px;padding:10px;border:0;border-radius:11px;background:#71499a;color:#fff;font-size:17px;line-height:1.5;font-weight:700;cursor:pointer}.activation-guide-dialog button:focus-visible,.activation-guide-products a:focus-visible,.activation-guide-launcher:focus-visible{outline:3px solid #a07abb;outline-offset:3px}.activation-guide-dialog .activation-guide-close:focus,.activation-guide-dialog .activation-guide-close:focus-visible{outline:none;box-shadow:none}.activation-guide-dialog .activation-guide-close:focus-visible{color:#4e256f;text-decoration:underline;text-underline-offset:5px}.activation-wrong-link{display:block;padding:12px 0;min-height:44px;box-sizing:border-box;font-size:16px;font-weight:700;color:#925a27}@media (max-width:600px){.activation-guide-dialog{padding:24px 20px 20px}.activation-guide-dialog h2{font-size:21px}.activation-guide-products strong{font-size:16px}.activation-guide-products small{font-size:13px}.activation-guide-products>a,.activation-guide-upcoming{padding:10px}.activation-guide-products>a{padding-right:24px}.activation-guide-products>a>span{right:8px}.activation-guide-fullsite{min-height:70px}}.home-guide-launcher{box-sizing:border-box;display:inline-flex;align-items:center;justify-content:center;gap:6px;height:44px;min-height:44px;padding:8px 12px;border:2px solid currentColor;border-radius:10px;background:#fff;color:inherit;font:800 16px/1.4 system-ui;white-space:nowrap;cursor:pointer;box-shadow:0 2px 5px rgba(52,36,71,.04)}.home-guide-shade{position:fixed;top:0;right:0;bottom:0;left:0;z-index:20010;display:flex;align-items:center;justify-content:center;padding:20px;background:rgba(35,23,44,.5);box-sizing:border-box}.home-guide-dialog{position:relative;box-sizing:border-box;width:100%;max-width:480px;max-height:85vh;overflow:auto;padding:30px 24px 24px;border-radius:20px;background:#fffafc;color:#352448;font:16px/1.7 system-ui;box-shadow:0 14px 60px rgba(35,23,44,.2)}.home-guide-dialog:focus{outline:none}.home-guide-dialog h2{margin:4px 30px 10px 0;font-size:23px;line-height:1.4}.home-guide-brand{display:flex;align-items:center;gap:12px;padding-right:12px;min-width:0}.home-guide-brand img{flex:none;border-radius:23%}.home-guide-brand h2{margin:0 16px 0 0}.home-guide-dialog p{margin:10px 0;color:#655874}.home-guide-close{position:absolute;top:8px;right:8px;display:grid;place-items:center;width:44px;height:44px;padding:0;border:0;border-radius:50%;background:transparent;color:#7351a8;font:32px/1 system-ui;cursor:pointer}.home-guide-devices{display:flex;gap:6px;margin:20px 0;padding:5px;border-radius:12px;background:#f0e8f8}.home-guide-devices button{flex:1;min-height:44px;padding:6px;border:0;border-radius:9px;background:transparent;color:#655874;font:600 15px/1.4 system-ui;cursor:pointer}.home-guide-devices button[aria-pressed=true]{background:#fff;color:#63428f;box-shadow:0 2px 8px rgba(53,36,72,.07)}.home-guide-dialog ol{padding-left:24px;margin:20px 0}.home-guide-dialog li{padding-left:4px;margin:12px 0}.home-guide-dialog .home-guide-note{padding:12px 14px;border-radius:10px;background:#f5effa;font-size:14px}.home-guide-transfer{padding:14px;border:1px solid #e4d8ee;border-radius:12px;background:#f5effa}.home-guide-transfer strong{display:block;font-size:15px}.home-guide-dialog .home-guide-transfer p{margin:6px 0 12px;font-size:14px}.home-guide-copy{min-height:44px;padding:8px 16px;border:1px solid #7351a8;border-radius:9px;background:#fff;color:#63428f;font:700 15px/1.5 system-ui;cursor:pointer}.home-guide-address{display:block;box-sizing:border-box;width:100%;min-width:0;margin-top:10px;padding:10px;border:1px solid #d8c9e6;border-radius:8px;background:#fff;color:#655874;font:14px/1.5 system-ui}.home-guide-copy-status{display:block;font-size:14px;color:#63428f;overflow-wrap:anywhere}.home-guide-copy-status:not(:empty){margin-top:8px}.home-guide-browser-title{margin:20px 0 10px;font-size:17px}.home-guide-browsers{display:flex;flex-wrap:wrap;gap:8px}.home-guide-browsers button{flex:1 1 110px;min-height:44px;padding:8px 10px;border:1px solid #d8c9e6;border-radius:9px;background:#fff;color:#655874;font:600 14px/1.5 system-ui;cursor:pointer}.home-guide-browsers button[aria-pressed=true]{border-color:#7351a8;background:#f0e8f8;color:#63428f}.home-guide-help{margin:16px 0;border-top:1px solid #e4d8ee;border-bottom:1px solid #e4d8ee}.home-guide-help summary{padding:12px 0;color:#63428f;font-size:15px;font-weight:700;cursor:pointer}.home-guide-help ul{margin:0 0 14px;padding-left:20px;font-size:14px}.home-guide-dialog .home-guide-help li{margin:8px 0}.home-guide-done{width:100%;min-height:48px;margin-top:10px;padding:10px;border:0;border-radius:11px;background:#7351a8;color:#fff;font:700 17px/1.5 system-ui;cursor:pointer}.home-guide-dialog button:focus-visible,.home-guide-dialog input:focus-visible,.home-guide-dialog summary:focus-visible,.home-guide-launcher:focus-visible{outline:2px solid #7351a8;outline-offset:2px}.home-guide-dialog .home-guide-close:focus,.home-guide-dialog .home-guide-close:focus-visible{outline:none;box-shadow:none}.home-guide-dialog .home-guide-close:focus-visible{color:#4e256f;text-decoration:underline;text-underline-offset:5px}@media (max-width:600px){.home-guide-dialog{padding:28px 20px 20px}.home-guide-dialog h2{font-size:21px}.home-guide-launcher{font-size:15px;padding:8px 10px}}.home-guide-dialog.home-guide-illustrated{max-width:880px}.home-guide-pictures h3{margin:18px 0 10px;font-size:17px}.home-guide-steps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.home-guide-steps img{display:block;width:100%;height:auto;border-radius:10px}@media (max-width:600px){.home-guide-shade{padding:12px}.home-guide-dialog{max-height:calc(100vh - 24px);max-height:calc(100dvh - 24px);padding:28px 16px 16px}.home-guide-steps{grid-template-columns:minmax(0,1fr)}.home-guide-brand img{width:44px;height:44px}.home-guide-brand h2{font-size:19px}}.home-guide-edge-image{display:block;width:100%;height:auto;border-radius:10px}.reader-review-note{display:flex;align-items:center;gap:0;margin:10px 0 8px;padding:8px 10px;border:2px solid var(--review-note-accent);border-left-width:6px;border-radius:10px;background:var(--review-note-soft);color:var(--review-note-accent);box-shadow:0 4px 14px rgba(52,36,64,.055),inset 0 1px rgba(255,255,255,.733);font:14px/1.65 system-ui;text-align:left}.reader-review-note>svg{display:none}.reader-review-copy{display:block;flex:1;min-width:0}.reader-review-lead{display:block;margin:0;font:800 18px/1.5 Kaiti SC,STKaiti,KaiTi,serif;letter-spacing:0}.reader-review-lead>span{display:inline}.reader-review-detail{display:block;margin:2px 0 0;font:500 14px/1.65 system-ui}.reader-review-detail>span{display:inline;margin:0}.reader-review-easter-egg{display:block;margin:2px 0 0;font:500 14px/1.65 system-ui}.reader-review-note strong{font-weight:750}@media (max-width:600px){.reader-review-note{margin:8px 0}}@media (min-width:701px){.reader-review-note{padding:10px 8px}.reader-review-lead{font-size:28px;line-height:1.45;letter-spacing:.3px}.reader-review-detail{display:inline;margin:0;font-size:21px}.reader-review-easter-egg{display:inline;margin:0 0 0 4px;font-size:20px}}@media (min-width:701px) and (max-width:767px){.reader-review-detail{font-size:20px}}@media (min-width:900px){.reader-review-note{padding:10px 18px}.reader-review-detail{font-size:24px}.reader-review-easter-egg{margin-left:12px;font-size:22px}}@media (orientation:portrait) and (min-width:701px) and (max-width:899px){.reader-review-detail{font-size:20px}.reader-review-easter-egg{font-size:18px;margin-left:0;letter-spacing:-.3px}}@media (orientation:portrait) and (min-width:701px) and (max-width:767px){.reader-review-detail{font-size:19px}.reader-review-easter-egg{font-size:17px}}.reader-review-note+.course-shelf-intro{padding-top:0}.reader-review-note+.course-shelf-intro>.course-eyebrow{margin-top:0}.library-return-label{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;line-height:1.2;white-space:nowrap}.library-return-label .library-return-text{display:block;white-space:nowrap}.library-return-arrow{display:block;width:88px;height:12px;flex-shrink:0}.heart-login-return{flex-shrink:0;justify-content:center}.heart-login-return .library-return-label{display:inline-flex}.heart-login-return .library-return-text{display:block}@media (max-width:420px){.heart-header{gap:10px}.heart-header .heart-brand strong{font-size:clamp(20px,5.7vw,24px)}.heart-header .heart-brand small{font-size:13px}}@media (max-width:360px){.heart-header,.heart-header .heart-brand{gap:8px}.heart-header .heart-logo{width:36px;height:36px;font-size:29px}.heart-header .heart-brand small{font-size:12px}}.home .story-category-picker{position:relative}.home .story-category-trigger{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 4px 0 0;border:0;color:inherit;background:none;font:inherit;cursor:pointer}.home .story-category-trigger svg{flex:none}.home .story-category-trigger[aria-expanded=true] svg{transform:rotate(180deg)}.home .story-category-trigger:focus-visible{outline:2px solid var(--shelf-filter-accent);outline-offset:2px;border-radius:6px}.home .story-category-filters{position:absolute;top:calc(100% - 4px);left:0;z-index:30;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;box-sizing:border-box;width:100%;max-width:480px;padding:12px;border:1px solid var(--line);border-radius:14px;background:var(--card);box-shadow:var(--shadow-lg,0 8px 24px #0002)}.home .story-category-filters button{min-width:0;display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;padding:7px 6px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--fg);font:600 14px/1.4 system-ui,sans-serif;cursor:pointer;white-space:nowrap}.home .story-category-filters button[aria-pressed=true]{color:var(--card);background:var(--shelf-filter-accent);border-color:var(--shelf-filter-accent)}.home .story-category-filters button:focus-visible{outline:2px solid var(--shelf-filter-accent);outline-offset:2px}.home .story-filter-count{font-family:Arial,Helvetica Neue,sans-serif;font-variant-numeric:lining-nums tabular-nums;font-feature-settings:"lnum" 1,"tnum" 1;opacity:.72;font-size:12px}.home .story-filter-result{margin-left:auto;color:var(--muted);font:400 13px/1.4 system-ui,sans-serif}.word-phonetics>span{display:block;white-space:normal;overflow-wrap:anywhere}@media (max-width:767px) and (orientation:portrait){.shared-reader .mobile-word-card .word-card.word-card-with-phonetics{grid-template-rows:32px auto auto}.mobile-word-card .word-card-pronunciation>.word-phonetics{grid-column:1/3;white-space:normal;overflow:visible}.shared-reader .mobile-word-card .word-card .word-card-pronunciation>.word-card-play{grid-column:3;width:44px!important;display:inline-flex;justify-content:center;align-items:center;gap:3px}}.shared-reader .reader-playback-controls .va-btn[aria-pressed=true],.shared-reader .shared-reader-toolbar.reader-toolbar .reader-playback-controls .vocab-audio .va-btn[aria-pressed=true]{background:var(--reader-accent);color:var(--card);border-color:var(--reader-accent)}.word-card-play>span:first-child{font-size:16px}.word-card-play>span:last-child{font-size:11px}.app.ielts-collection-app{max-width:1120px}.ielts-collections,.ielts-short-bookshelf{padding:0 0 32px}.ielts-collections-heading{padding:28px 0 24px}.ielts-collections-heading>p{margin:0 0 10px;color:var(--gold-deep);font-size:14px;font-weight:700}.ielts-collections-heading h1{margin:0 0 12px;font-size:34px;line-height:1.3}.ielts-collections-heading>span{color:var(--muted);font-size:17px;line-height:1.7}.ielts-collection-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.ielts-collection-card{min-width:0;display:grid;grid-template-columns:43% minmax(0,1fr);align-items:center;background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow)}.ielts-collection-card>img{display:block;width:100%;height:auto}.ielts-collection-copy{padding:24px 20px;min-width:0}.ielts-collection-label{color:var(--gold-deep);font-size:13px;font-weight:700;line-height:1.6}.ielts-collection-copy h2{margin:12px 0 8px;font-size:28px;line-height:1.3}.ielts-collection-copy>p{margin:10px 0;font-size:16px;line-height:1.7}.ielts-collection-copy .ielts-collection-count{font-size:40px;line-height:1.15;font-weight:750;color:var(--gold-deep)}.ielts-collection-count>span{margin-left:6px;font-size:18px;font-weight:500}.ielts-collection-copy .ielts-collection-description{color:var(--muted);font-size:15px}.ielts-collection-copy button,.ielts-shorts-pending button{display:flex;width:100%;gap:12px;align-items:center;justify-content:space-between;margin-top:20px;min-height:48px;padding:12px 14px;border:1px solid var(--gold-deep);border-radius:12px;color:var(--card);background:var(--gold-deep);font-size:16px;font-weight:700;cursor:pointer}.ielts-shorts-pending{padding:36px;border:1px solid var(--line);border-radius:16px;background:var(--card)}.ielts-shorts-pending h2{margin:12px 0;font-size:24px;line-height:1.4}.ielts-shorts-pending p{margin:0;color:var(--muted);font-size:17px;line-height:1.8}.ielts-shorts-pending button{width:auto;justify-content:center}@media (min-width:701px) and (max-width:1000px){.ielts-collection-card{grid-template-columns:minmax(0,1fr);align-content:start}.ielts-collection-card>img{width:100%;max-height:360px;object-fit:contain;background:var(--card2)}.ielts-collection-copy{padding:20px}}@media (max-width:700px){.ielts-collections-heading{padding:22px 0 20px}.ielts-collections-heading h1{font-size:28px}.ielts-collections-heading>span{font-size:16px}.ielts-collection-grid{grid-template-columns:minmax(0,1fr);gap:18px}.ielts-collection-card{grid-template-columns:40% minmax(0,1fr)}.ielts-collection-copy{padding:18px 14px}.ielts-collection-copy h2{margin-top:8px;font-size:24px}.ielts-collection-copy .ielts-collection-count{font-size:32px}.ielts-collection-copy>p,.ielts-collection-copy .ielts-collection-description{font-size:14px}.ielts-collection-label{font-size:12px}.ielts-collection-copy button{padding:10px;font-size:15px;margin-top:14px}.ielts-shorts-pending{padding:24px 20px}.ielts-shorts-pending h2{font-size:22px}}.ielts-short-bookshelf .home-carousel{background:var(--bg2);border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow-lg);position:relative;aspect-ratio:2.08/1;margin-bottom:20px}.ielts-short-bookshelf .home-track{display:flex;width:100%;height:100%;transition:transform .5s ease}.ielts-short-bookshelf .home-slide{flex:0 0 100%;width:100%;height:100%;overflow:hidden;margin:0;padding:0;border:0;background:transparent;text-align:left}.ielts-short-bookshelf .home-slide img{width:100%;height:100%;object-fit:cover;display:block}.ielts-short-bookshelf .banner-art{transform:scale(1.105);transform-origin:center}.ielts-short-bookshelf .home-slide .banner-art{transform:scale(1.045)}.ielts-short-bookshelf .home-slide .banner-art-1{transform:translateY(-2.5%) scale(1.18)}.ielts-short-bookshelf .home-dots{position:absolute;bottom:14px;left:0;right:0;display:flex;justify-content:center;gap:8px}.ielts-short-bookshelf .home-dots button{width:8px;height:8px;border-radius:50%;border:none;background:rgba(255,255,255,.55)}.ielts-short-bookshelf .home-dots button.active{background:#fff;width:20px;border-radius:999px}.ielts-short-bookshelf .home-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:22px}.ielts-short-bookshelf .stat-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 8px;text-align:center;box-shadow:var(--shadow)}.ielts-short-bookshelf .stat-num{font-size:22px;font-weight:800;color:var(--gold-deep)}.ielts-short-bookshelf .stat-label{font-size:12px;color:var(--muted)}.ielts-short-bookshelf .syllabus-entry{width:100%;display:grid;grid-template-columns:62px minmax(0,1fr) 28px;align-items:center;gap:13px;margin:-5px 0 22px;padding:13px 15px;border:1px solid var(--gold-line);border-radius:20px;color:#fff;text-align:left;background:radial-gradient(circle at 88% 0%,rgba(255,255,255,.28),transparent 34%),linear-gradient(135deg,var(--gold-deep),var(--gold));box-shadow:0 11px 26px rgba(120,90,50,.12)}.ielts-short-bookshelf .syllabus-entry-icon{width:62px;height:48px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.58);border-radius:14px;background:rgba(255,255,255,.14);font-family:Georgia,Times New Roman,serif;font-size:19px;font-weight:800;letter-spacing:.04em}.ielts-short-bookshelf .syllabus-entry-copy{min-width:0;display:grid;gap:2px}.ielts-short-bookshelf .syllabus-entry-copy b{font-size:18px;line-height:1.35}.ielts-short-bookshelf .syllabus-entry-copy small{color:rgba(255,255,255,.86);font-size:11px;line-height:1.45}.ielts-short-bookshelf .syllabus-entry-arrow{width:28px;height:28px;display:grid;place-items:center;border-radius:50%;color:var(--gold-deep);background:#fff;font-size:18px;font-weight:800}.ielts-short-bookshelf .home-section-title{display:flex;align-items:center;gap:8px;margin:0 0 12px;font-size:18px;font-weight:800;color:var(--gold-deep)}.ielts-short-bookshelf .home-section-title .dot{width:8px;height:8px;border-radius:50%;background:var(--gold)}.ielts-short-bookshelf .book-grid{display:grid;grid-template-columns:1fr;gap:14px}.ielts-short-bookshelf .book-card{display:flex;gap:12px;align-items:stretch;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:11px;text-align:left;box-shadow:var(--shadow);transition:transform .15s ease,box-shadow .15s ease}.ielts-short-bookshelf .book-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}.ielts-short-bookshelf .book-cover{width:96px;height:auto;flex:0 0 96px;align-self:flex-start;border-radius:10px;object-fit:contain;aspect-ratio:3/4}.ielts-short-bookshelf .book-body{flex:1;min-width:0;display:flex;flex-direction:column}.ielts-short-bookshelf .book-title-row{display:flex;align-items:baseline;gap:6px}.ielts-short-bookshelf .book-title{font-size:15px;font-weight:800;color:var(--fg);line-height:1.35}.ielts-short-bookshelf .book-no{font-size:11px;font-weight:700;color:var(--gold);background:var(--gold-soft);border-radius:999px;padding:2px 7px;white-space:nowrap}.ielts-short-bookshelf .book-intro{margin:5px 0 0;font-size:13px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.5}.ielts-short-bookshelf .book-meta{margin-top:auto;padding-top:6px;font-size:12px;color:var(--gold-deep);font-weight:700}.ielts-short-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 0 16px}.ielts-short-heading h1{margin:0;font-size:28px;line-height:1.4}.ielts-short-bookshelf .home-slide .banner-art{transform:none}.ielts-shorts-updating{margin-top:20px;padding:22px 20px;border:1px dashed var(--gold-line);border-radius:16px;background:var(--bg2);text-align:center}.ielts-shorts-updating strong{color:var(--gold-deep);font-size:18px}.ielts-shorts-updating p{margin:8px 0 0;color:var(--muted);font-size:14px}.ielts-short-vocabulary input{width:100%;min-height:48px;padding:10px 14px;border:1px solid var(--line);border-radius:10px;color:var(--fg);background:var(--card);font-size:17px}@media (min-width:640px){.ielts-short-bookshelf .book-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (min-width:1200px){.ielts-short-bookshelf .book-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (max-width:640px){.ielts-short-heading h1{font-size:24px}}.shelf-navigation.shelf-download-tools{position:fixed;top:0;left:0;right:0;z-index:10001;box-sizing:border-box;display:flex;align-items:center;height:49px;padding:0 var(--shelf-nav-inset,12px);border-bottom:1px solid var(--line,#e8d7c1);background:var(--bg,#fffaf3);color:var(--shelf-pdf-accent)}.shelf-download-tools>.shelf-library-return{margin-right:auto}.shelf-course-title{display:none}.shelf-pdf-dropdown{position:absolute;left:50%;transform:translate(-50%);color:inherit;background:inherit}.shelf-pdf-toggle{position:static;left:auto;transform:none;box-sizing:border-box;display:inline-flex;align-items:center;justify-content:center;gap:4px;height:44px;min-height:44px;padding:6px 8px;border:1px solid currentColor;border-radius:10px;background:transparent;color:inherit;font:700 14px/1.4 system-ui;white-space:nowrap;cursor:pointer}.shelf-pdf-chevron{font-size:12px}.shelf-navigation.shelf-download-tools>.home-guide-launcher{margin-left:8px;font-size:14px;font-weight:700;padding:8px 10px;border:1px solid currentColor;border-radius:10px;background:transparent;box-shadow:none}.shelf-navigation-spacer{height:49px}.shelf-pdf-panel{position:absolute;top:calc(100% + 6px);left:0;box-sizing:border-box;width:100%;margin:0;padding:4px;border:1px solid currentColor;border-radius:10px;background:inherit;color:inherit;box-shadow:0 6px 18px rgba(38,27,19,.1)}.shelf-pdf-panel[hidden]{display:none}.shelf-offline-files{display:flex;flex-direction:column}.shelf-offline-files+.shelf-offline-files{border-top:1px solid var(--line,#e8d7c1);margin-top:4px;padding-top:4px}.shelf-pdf-group-title{padding:3px 0;text-align:center;font:700 11px/1.4 system-ui;color:inherit}.shelf-offline-files a{display:flex;align-items:center;justify-content:center;box-sizing:border-box;min-height:44px;padding:6px 2px;border:0;border-radius:6px;color:inherit;background:transparent;font:500 13px/1.4 system-ui;text-align:center;text-decoration:none;white-space:nowrap}.shelf-offline-files a:hover{background:var(--bg,#fffaf3)}.shelf-pdf-toggle:focus-visible,.shelf-pdf-panel a:focus-visible{outline:2px solid currentColor;outline-offset:1px}@media (min-width:768px){.shelf-pdf-dropdown{position:relative;left:auto;transform:none}.shelf-course-title{display:block;position:absolute;left:50%;transform:translate(-50%);max-width:calc(100% - 500px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font:800 19px/1.4 system-ui}}@media (max-width:600px){.shelf-pdf-toggle{gap:4px;font-size:13px}.shelf-navigation.shelf-download-tools>.home-guide-launcher{font-size:13px;padding:8px}}@media (max-width:360px){.shelf-pdf-toggle{font-size:12px;padding:6px}.shelf-navigation.shelf-download-tools{padding:0 8px;gap:6px}.shelf-navigation.shelf-download-tools>.home-guide-launcher{font-size:12px;padding:8px 6px;gap:4px}}.offline-download-layer{position:fixed;top:0;right:0;bottom:0;left:0;z-index:30000;display:flex;align-items:center;justify-content:center;padding:16px;box-sizing:border-box;color:var(--fg,var(--text,#302b27));font:15px/1.65 system-ui}.offline-download-backdrop{position:absolute;top:0;right:0;bottom:0;left:0;background:rgba(36,28,34,.3)}.offline-download-dialog{position:relative;display:flex;flex-direction:column;width:min(560px,100%);max-height:calc(100vh - 32px);max-height:calc(100dvh - 32px);overflow:hidden;border:1px solid var(--line,#dfd3c7);border-radius:16px;background:var(--bg,#fffaf3);box-shadow:0 16px 60px rgba(36,28,34,.15)}.offline-download-dialog header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:6px 16px;border-bottom:1px solid var(--line,#dfd3c7);color:var(--download-accent)}.offline-download-dialog button{min-height:44px;padding:8px 12px;font:600 14px/1.4 system-ui;border:1px solid var(--download-accent);border-radius:9px;color:var(--download-accent);background:transparent;cursor:pointer}.offline-download-dialog .offline-download-back{border:0;padding-left:0}.offline-download-dialog header>span{font-size:12px;font-weight:700}.offline-download-content{min-height:0;overflow-y:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;padding:14px 18px}.offline-download-dialog h2{font:700 20px/1.5 system-ui;margin:0 0 8px;color:var(--download-accent);overflow-wrap:anywhere}.offline-download-dialog p{margin:8px 0}.offline-download-dialog .offline-download-rights{font-size:12px;color:var(--muted,#756b63)}.offline-download-status{font-weight:600;overflow-wrap:anywhere}.offline-download-status[role=alert]{color:#a12e3b}.offline-download-help{padding-top:4px;margin-top:12px;border-top:1px solid var(--line,#dfd3c7)}.offline-download-help h3{font-size:15px;margin:12px 0 4px}.offline-download-help summary{min-height:44px;display:flex;align-items:center;cursor:pointer;color:var(--download-accent);font-weight:600}.offline-download-help p,.offline-download-help li{font-size:14px}.offline-download-filename{padding:8px 10px;border:1px solid var(--line,#dfd3c7);border-radius:8px;overflow-wrap:anywhere;font-weight:600;color:var(--download-accent)}.offline-download-help ol{padding-left:22px;margin:6px 0}.offline-download-help li{margin:6px 0}.offline-download-dialog footer{display:flex;flex-wrap:wrap;gap:8px;padding:12px 18px calc(12px + env(safe-area-inset-bottom));border-top:1px solid var(--line,#dfd3c7)}.offline-download-dialog footer>button{flex:1;background:var(--download-accent);color:#fff}.offline-download-dialog footer>.secondary{background:transparent;color:var(--download-accent)}.offline-download-dialog button:disabled{opacity:.65;cursor:wait}.offline-download-dialog :focus-visible{outline:2px solid var(--download-accent);outline-offset:2px}@media (max-width:600px){.offline-download-layer{padding:10px}.offline-download-dialog{max-height:calc(100vh - 20px);max-height:calc(100dvh - 20px)}.offline-download-content{padding:12px 14px}.offline-download-dialog h2{font-size:18px}.offline-download-dialog footer{padding-left:14px;padding-right:14px}}.shelf-account-actions{display:flex;align-items:center;gap:8px;flex:none}.shelf-account-actions button{min-height:44px;padding:6px 10px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--muted);font:700 14px/1.4 system-ui;white-space:nowrap}.shelf-library-return{display:inline-flex;align-items:center;min-height:44px;padding:0;border:0;background:none;color:var(--pink-deep,var(--gold-deep,#805524));font:700 16px system-ui;flex:none;cursor:pointer;text-decoration:none}.shelf-mobile-install{display:inline-flex;flex:none;color:var(--pink-deep,var(--gold-deep,#805524))}.shelf-wide-install{display:none}@media (max-width:600px){.shelf-account-actions{gap:6px}.shelf-account-actions button{font-size:12px;padding:6px 8px}.shelf-navigation .home-guide-launcher{font-size:14px;padding:8px}.shelf-navigation>a{font-size:15px!important}}@media (min-width:900px) and (orientation:landscape){.shelf-mobile-install{display:none}.shelf-wide-install{display:flex;flex:none;margin-left:auto}.reader-review-note-with-guide .reader-review-copy{flex:1}}.shelf-navigation-title{display:none}@media (min-width:900px) and (orientation:landscape){.shelf-navigation{--shelf-nav-inset:clamp(28px,4vw,64px)}.shelf-navigation-title{display:block;position:absolute;left:50%;transform:translate(-50%);max-width:50%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font:800 19px/1.4 system-ui;letter-spacing:.5px}}html body .home .syllabus-entry-icon,html body .home .stat-num,html body .home .book-no,html body .ielts-collection-count,html body .course-small-stats b,html body .learning-stats b,html body .chapter-summary-stats b,html body .notebook-hero strong{font-family:Arial,Helvetica Neue,sans-serif!important;font-variant-numeric:lining-nums tabular-nums;font-feature-settings:"lnum" 1,"tnum" 1}html body .home .syllabus-entry-icon{line-height:1;letter-spacing:0}.word-repeat{--repeat-accent:var(--reader-accent,var(--pink-deep,var(--gold-deep,#91602e)));min-width:0;margin-top:18px}.word-repeat-panel{min-width:0;padding:16px;border:1px solid var(--line,#e4d7c7);border-radius:14px;background:var(--bg2,var(--pink-verysoft,#faf5ed))}.word-repeat-heading{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:6px 12px}.word-repeat-heading b{font-size:17px;color:var(--repeat-accent)}.word-repeat-heading span{font-size:13px;color:var(--muted,#796653)}.word-repeat-settings{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:14px}.word-repeat-settings label{min-width:0;display:flex;flex-direction:column;gap:6px;color:var(--muted,#796653);font-size:14px}.word-repeat-settings select{box-sizing:border-box;width:100%;min-width:0;min-height:44px;padding:6px 8px;border:1px solid var(--line,#e4d7c7);border-radius:9px;color:var(--fg,#3c2d24);background:var(--card,#fff);font-size:16px}.word-repeat .word-repeat-status{margin:12px 0;min-height:24px;color:var(--muted,#796653);font-size:14px;line-height:1.65}.word-repeat .word-repeat-status.is-waiting{color:var(--repeat-accent);font-weight:700}.word-repeat-actions{display:flex;gap:8px}.word-repeat .word-repeat-actions button{min-height:44px;border:1px solid var(--repeat-accent);border-radius:10px;padding:10px 12px;font-size:16px;font-weight:700;cursor:pointer}.word-repeat .word-repeat-primary{flex:1;background:var(--repeat-accent);color:#fff}.word-repeat .word-repeat-primary:disabled{opacity:.45;cursor:not-allowed}.word-repeat .word-repeat-stop{background:var(--card,#fff);color:var(--repeat-accent)}.word-repeat-global{margin:0 0 18px;padding:0 18px;display:grid;grid-template-columns:minmax(0,1fr);border:1px solid var(--line);border-radius:12px;background:var(--card)}.word-repeat-disclosure{display:flex;align-items:center;justify-content:space-between;gap:14px;width:100%;min-height:58px;padding:12px 0;border:0;background:transparent;color:var(--repeat-accent);text-align:left;cursor:pointer}.word-repeat-disclosure b{font-size:17px;line-height:1.5}.word-repeat-triangle{width:0;height:0;margin:0 4px;border-left:6px solid transparent;border-right:6px solid transparent;border-top:7px solid currentColor}.word-repeat-disclosure[aria-expanded=true] .word-repeat-triangle{transform:rotate(180deg)}.word-repeat-options{padding:0 0 14px}.word-repeat-options[hidden]{display:none}.word-repeat-options .word-repeat-click-mode{margin-top:12px}.word-repeat-disclosure:focus-visible{outline:2px solid var(--repeat-accent);outline-offset:2px;border-radius:6px}.word-repeat-click-mode{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;padding-top:12px;border-top:1px solid var(--line)}.word-repeat-click-mode>span{font-size:14px;color:var(--fg)}.word-repeat-click-choices{display:flex;flex-wrap:wrap;gap:8px}.word-repeat-click-choices button{min-height:44px;padding:8px 14px;border:1px solid var(--repeat-accent);border-radius:9px;background:var(--card);color:var(--repeat-accent);font-size:15px;font-weight:700;cursor:pointer;white-space:nowrap}.word-repeat-click-choices button[aria-pressed=true]{background:var(--repeat-accent);color:#fff}.word-repeat-global .word-repeat-settings{margin:0;grid-template-columns:repeat(4,minmax(0,1fr));align-items:end;gap:12px}.word-repeat-global .word-repeat-settings select{height:44px}.word-repeat .word-repeat-list-start{width:100%;height:44px;padding:8px;border:1px solid var(--repeat-accent);border-radius:9px;background:var(--repeat-accent);color:#fff;font-size:15px;font-weight:700;cursor:pointer;white-space:nowrap}.word-repeat-list-start:disabled{opacity:.45;cursor:not-allowed}.shared-side-word.is-repeating{background:var(--bg2,var(--card));border-radius:10px;outline:2px solid var(--reader-accent);outline-offset:-2px}.word-repeat-global-progress{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line);padding:10px 0 14px}.word-repeat-global-progress .word-repeat-status{margin:0}.word-repeat-global-progress .word-repeat-actions{flex:none}@media (max-width:900px){.word-repeat-global{padding:0 14px}.word-repeat-global-progress{flex-wrap:wrap}}@media (max-width:600px){.word-repeat-global .word-repeat-settings{grid-template-columns:repeat(2,minmax(0,1fr))}}.shared-reader-toolbar.reader-toolbar{overflow:visible}.word-repeat.word-repeat-toolbar{order:2;display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:0;min-width:0}.shared-reader-toolbar.reader-toolbar .reader-font{order:4}.shared-reader-toolbar .word-repeat-trigger{display:inline-flex;align-items:center;gap:9px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--repeat-accent);font-weight:700;cursor:pointer}.word-repeat-trigger b{font:inherit}.word-repeat-trigger .word-repeat-triangle{border-left-width:4px;border-right-width:4px;border-top-width:5px;margin:0}.word-repeat-trigger[aria-expanded=true] .word-repeat-triangle{transform:rotate(180deg)}.word-repeat-toolbar-status{max-width:170px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px;color:var(--repeat-accent)}.word-repeat-announcement{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.word-repeat.word-repeat-flyout{position:absolute;top:calc(100% + 8px);z-index:5;box-sizing:border-box;width:480px;max-width:calc(100% - 24px);max-height:calc(100vh - 180px);max-height:calc(100dvh - 180px);overflow:auto;-webkit-overflow-scrolling:touch;margin:0;padding:20px;border:1px solid var(--line);border-radius:14px;background:var(--card,#fff);color:var(--fg);box-shadow:0 10px 32px rgba(0,0,0,.14)}.word-repeat-flyout .word-repeat-settings{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:0 0 16px}.word-repeat-flyout .word-repeat-settings select{height:48px;min-height:48px;padding:8px;font-size:16px}.word-repeat-flyout .word-repeat-click-mode{margin-bottom:16px}.word-repeat-flyout .word-repeat-list-start{height:48px;font-size:16px}.word-repeat-flyout :focus-visible{outline:2px solid var(--repeat-accent);outline-offset:2px}.word-repeat-toolbar .word-repeat-actions button{padding:6px 10px}.shared-reader-toolbar.reader-toolbar .vocab-audio{order:3;display:flex;align-items:center;flex-wrap:nowrap;flex:none;gap:6px;margin:0}.shared-reader-toolbar.reader-toolbar .vocab-audio .va-btn{flex:none;min-height:44px;min-width:0;padding:8px 10px;font-size:14px;box-shadow:none}.shared-reader-toolbar .vocab-audio .va-emoji{display:inline;font-size:16px;margin-right:4px}.shared-reader-body>.story>.tabs{margin-top:0}.shared-reader-body>.story>.story-text{margin-top:12px}@media (max-width:600px){.word-repeat-flyout .word-repeat-settings{grid-template-columns:1fr}.word-repeat.word-repeat-flyout{padding:16px}.word-repeat-toolbar-status{max-width:120px}.shared-reader-toolbar.reader-toolbar{gap:8px;padding:8px}.shared-reader-toolbar.reader-toolbar button{padding:8px 10px}.shared-reader-toolbar.reader-toolbar .reader-font>span{display:none}}.legacy-ui .word-repeat-flyout .word-repeat-settings select{margin-bottom:10px}.legacy-ui .shared-reader-toolbar>.shared-reader-toggle,.legacy-ui .shared-reader-toolbar>.reader-directory-trigger,.legacy-ui .word-repeat-toolbar>*,.legacy-ui .shared-reader-toolbar .vocab-audio>button{margin-right:8px}.legacy-ui .shared-reader-toolbar .vocab-audio>button,.legacy-ui .word-repeat-toolbar>button{margin-top:0;margin-bottom:0}.word-repeat-flyout .word-repeat-settings{grid-template-columns:repeat(2,minmax(0,1fr))}.shared-reader-toolbar .vocab-audio .va-btn:not(.is-selected):not(.va-stop){background:var(--card);color:var(--reader-accent);border-color:var(--line)}@media (max-width:600px){.shared-reader-toolbar.reader-toolbar .vocab-audio{gap:4px}.shared-reader-toolbar.reader-toolbar .vocab-audio .va-btn{padding:8px 4px;font-size:13px}.shared-reader-toolbar .vocab-audio .va-emoji{margin-right:2px}.shared-reader-toolbar.reader-toolbar .reader-font{gap:4px}.shared-reader-toolbar.reader-toolbar .reader-font button{min-width:44px;padding:8px 6px}}.word-repeat.word-repeat-toolbar{flex-wrap:nowrap;flex:none;gap:4px}.shared-reader-toolbar .word-repeat-trigger{position:relative;height:44px;min-height:44px;flex:none;white-space:nowrap}.word-repeat-compact-status{position:absolute;bottom:1px;left:4px;right:4px;height:10px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:9px;line-height:10px;font-weight:400}.word-repeat-toolbar .word-repeat-actions{flex:none;gap:4px}.word-repeat-toolbar .word-repeat-actions .word-repeat-pause,.word-repeat-toolbar .word-repeat-actions .word-repeat-stop{box-sizing:border-box;flex:none;width:44px;min-width:44px;height:44px;min-height:44px;padding:0;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--repeat-accent);font:inherit;font-size:13px;line-height:1;white-space:nowrap}.word-repeat-toolbar .word-repeat-pause:disabled{opacity:.4;cursor:default}.word-repeat-toolbar .word-repeat-pause[aria-pressed=true]{background:var(--repeat-accent);border-color:var(--repeat-accent);color:#fff}.practice-answer-control{display:inline-flex;flex:none;align-self:center;align-items:center;justify-content:center;width:44px;min-height:44px;margin:0 2px 0 4px;vertical-align:middle}.practice-answer-action{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;min-width:44px;padding:0;border:0;border-radius:8px;color:#837a70;background:transparent;font-family:inherit;font-size:22px;font-weight:800;line-height:1;cursor:pointer;touch-action:manipulation}.practice-answer-action:active{background:var(--gold-soft, var(--bg2))}.practice-answer-action:focus-visible{outline:2px solid currentColor;outline-offset:2px}.practice-answer-action svg{display:block;width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.practice-correct-feedback{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:50%;color:#fff;background:var(--ok, #16815f);font-size:15px;box-shadow:0 3px 10px rgba(29,158,117,.25);animation:cloze-check-pop .62s ease both}@media (prefers-reduced-motion:reduce){.practice-correct-feedback{animation:none}}.practice-head .practice-restart{min-height:44px;padding:8px 12px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--reader-accent);white-space:nowrap;cursor:pointer}.practice-restart:disabled{opacity:.45;cursor:default}body.notebook-directory-open{overflow:hidden}.notebook-vocab-page>.vb-hero,.notebook-vocab-page>.vb-mode-switch{display:none}.notebook-directory-page{--nb-accent:var(--gold-deep,#96632a);--nb-line:var(--line,#e8d7c1);--nb-ink:var(--fg,#3b2a1d);--nb-paper:var(--bg,#fbf5ec);--nb-card:var(--card,#fffdf9);--nb-muted:var(--muted,#8a6f57);--nb-context:var(--card2,var(--bg2,#f7eddf));--nb-highlight:var(--gold-soft,#f5ead9);box-sizing:border-box;display:flex;flex-direction:column;min-height:0;margin-top:8px;color:var(--nb-ink);background:var(--nb-paper);border:1px solid var(--nb-line);border-radius:12px;overflow:hidden}.notebook-vocab-page .notebook-directory-page{--nb-accent:var(--pink-deep,#d6336c);--nb-highlight:var(--pink-verysoft,#ffe4ec)}.notebook-directory-page *{box-sizing:border-box}.notebook-directory-page button{font:inherit;cursor:pointer;border:1px solid var(--nb-line);border-radius:10px;color:var(--nb-accent);background:var(--nb-card);min-height:44px;padding:8px 12px}.notebook-directory-page button:disabled{opacity:.4;cursor:default}.notebook-directory-page button:focus-visible,.notebook-directory-page input:focus-visible,.notebook-word-scroll:focus-visible{outline:2px solid var(--nb-accent);outline-offset:-2px}.notebook-directory-title{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;border-bottom:1px solid var(--nb-line)}.notebook-directory-title h1{margin:0;font-size:24px}.notebook-directory-title>span{font-size:14px}.notebook-directory-tools{padding:12px 20px;border-bottom:1px solid var(--nb-line)}.notebook-directory-tools input{width:100%;min-height:44px;padding:10px 12px;border:1px solid var(--nb-line);border-radius:10px;font:inherit;background:var(--nb-card);color:var(--nb-ink)}.notebook-directory-page button[aria-pressed=true]{color:#fff;background:var(--nb-accent);border-color:var(--nb-accent)}.notebook-directory-body{display:flex;flex:1;min-height:0;overflow:hidden}.notebook-chapters{width:160px;flex:none;overflow-y:auto;border-right:1px solid var(--nb-line);padding:10px 8px;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}.notebook-chapters button{display:flex;flex-direction:column;align-items:flex-start;width:100%;text-align:left;margin-bottom:8px;min-height:65px;gap:4px;font-size:17px;border-color:transparent;background:transparent}.notebook-chapters span{font-size:13px;font-weight:400}.notebook-chapters[hidden]{display:none}.notebook-section-title{display:flex;align-items:center;gap:8px;min-width:0}.notebook-section-title .notebook-chapter-toggle{display:inline-flex;align-items:center;justify-content:center;gap:4px;flex:none;min-height:36px;padding:5px 7px;font-size:13px;line-height:1.4;white-space:nowrap}.notebook-chapter-toggle svg{display:block;width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.notebook-results{flex:1;min-width:0;min-height:0;display:flex;flex-direction:column;overflow:hidden}.notebook-section-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 18px;flex:none}.notebook-section-head h2{margin:0;font-size:20px;line-height:1.4;overflow-wrap:anywhere}.notebook-section-head small{font-size:inherit;font-weight:400;white-space:nowrap}.notebook-repeat-actions{display:flex;gap:5px;flex:none}.notebook-repeat-actions button{padding:6px 12px;white-space:nowrap;border-color:var(--nb-accent)}.notebook-repeat-status{font-size:13px;line-height:1.5;margin:0;padding:0 18px 8px;overflow-wrap:anywhere}.notebook-repeat-status button{min-height:32px;padding:3px 8px}.notebook-word-scroll{overflow-y:auto;overflow-x:hidden;flex:1;min-height:0;padding:0 18px 18px;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}.notebook-word-scroll,.notebook-chapters{scrollbar-width:none;-ms-overflow-style:none;touch-action:pan-y pinch-zoom}.notebook-word-scroll::-webkit-scrollbar,.notebook-chapters::-webkit-scrollbar{display:none;width:0;height:0}.notebook-entry{padding:18px;margin-bottom:12px;border:1px solid var(--nb-line);border-radius:10px;background:var(--nb-card);overflow-wrap:anywhere}.notebook-entry>header{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;flex-wrap:wrap}.notebook-entry-word{min-width:0}.notebook-entry h3{font-size:29px;line-height:1.2;margin:0 0 4px;font-family:Arial,sans-serif}.notebook-entry-word>span{color:var(--nb-muted);font-size:17px}.notebook-pronunciation{display:flex;gap:6px;align-items:center;flex-wrap:wrap}.notebook-pronunciation button{font-size:14px;padding:6px 10px}.notebook-pronunciation .notebook-saved{font-size:23px;line-height:1;padding:6px 10px}.notebook-pronunciation button{display:inline-flex;align-items:center;justify-content:center;gap:4px}.notebook-pronunciation .word-audio-icon{display:block;width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}.notebook-entry-meaning{margin:14px 0;font-size:16px;line-height:1.8;font-weight:400}.notebook-entry-context{margin:12px 0;padding:12px 14px;border:1px solid var(--nb-line);border-radius:8px;background:var(--nb-context);font-size:16px;line-height:1.8;color:var(--nb-ink)}.notebook-entry-context>b{display:block;font-size:14px;color:var(--nb-accent)}.notebook-entry-context>p{margin:4px 0 0;white-space:pre-wrap}.notebook-entry-context mark{color:var(--nb-accent);background:var(--nb-highlight);font-weight:700;border-radius:4px;padding:1px 3px;box-decoration-break:clone;-webkit-box-decoration-break:clone}.notebook-entry-state{display:flex;align-items:center;gap:5px;flex-wrap:nowrap;margin-top:10px}.notebook-entry-state button{font-size:12px;line-height:1.4;flex:1;min-width:0;max-width:92px;min-height:34px;padding:5px 8px;white-space:nowrap}.notebook-entry-state .notebook-remove{flex:0 0 34px;width:34px;height:34px;min-height:34px;padding:7px;display:inline-flex;align-items:center;justify-content:center}.notebook-remove svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.notebook-entry-errors{display:block;margin-top:6px;font-size:12px;line-height:1.5;color:var(--nb-muted)}.notebook-entry-source{display:block;margin-bottom:9px;color:var(--nb-accent)}.notebook-directory-empty{padding:30px 10px;font-size:14px;line-height:1.8}.notebook-directory-empty h3{font-size:18px}@media (max-width:600px){.notebook-directory-title{padding:10px 12px}.notebook-directory-title h1{font-size:21px}.notebook-directory-tools{padding:10px}.notebook-chapters{width:76px;padding:8px 4px}.notebook-chapters button{padding:8px 6px;font-size:14px;min-height:64px}.notebook-chapters span{font-size:12px}.notebook-section-head{padding:8px;gap:4px}.notebook-section-head h2{font-size:16px}.notebook-section-head small{font-size:13px}.notebook-repeat-actions button{font-size:13px;padding:5px 7px}.notebook-word-scroll{padding:0 8px 10px}.notebook-entry{padding:12px 10px}.notebook-entry h3{font-size:25px}.notebook-entry-word>span{font-size:16px}.notebook-entry>header{gap:9px}.notebook-pronunciation{gap:5px}.notebook-pronunciation button{font-size:13px;padding:5px 8px}.notebook-entry-meaning{font-size:15px;line-height:1.75;margin:12px 0}.notebook-entry-context{font-size:15px;padding:10px;line-height:1.75}.notebook-entry-state{gap:4px}.notebook-entry-state button{font-size:12px;padding:5px 4px}.notebook-repeat-status{padding:0 8px 8px;font-size:12px}}body.notebook-directory-open .app{padding-top:0!important;padding-bottom:0!important}body.notebook-directory-open .course-topbar{top:0!important;min-height:52px!important;height:52px!important;margin:0!important;padding:4px 0!important;display:flex!important;flex-direction:row!important;flex-wrap:nowrap!important;align-items:center!important;justify-content:flex-start!important}body.notebook-directory-open .course-topbar .topbar-tools{display:none!important}body.notebook-directory-open .course-topbar .course-back-button{position:relative;z-index:42;max-width:135px;min-height:44px;font-size:14px!important;gap:6px}body.notebook-directory-open .course-topbar .course-back-title-full{display:none!important}body.notebook-directory-open .course-topbar .course-back-title-short{display:inline!important;white-space:nowrap}.notebook-directory-title{position:fixed;top:0;left:0;right:0;height:52px;padding:0 14px;z-index:41;pointer-events:none;border:0;background:transparent}.notebook-directory-title h1{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);font-size:20px;white-space:nowrap}.notebook-directory-title>span{margin-left:auto;font-size:13px;white-space:nowrap}.notebook-directory-page{margin-top:0}.notebook-directory-tools{padding:8px 10px}@media (max-width:767px){.notebook-entry>header{flex-direction:column;align-items:flex-start}}.auth-password-control{position:relative;display:block;min-width:0;width:100%}.auth-preview-page .auth-field .auth-password-control>input{padding-right:82px!important}.auth-password-control .auth-password-toggle{position:absolute;top:50%;right:6px;transform:translateY(-50%);display:flex;align-items:center;justify-content:center;width:auto;min-height:44px;padding:4px 8px!important;border:0;border-radius:8px;background:transparent;color:inherit;font:600 12px/1.4 system-ui!important;cursor:pointer}.auth-password-toggle:focus-visible{outline:2px solid currentColor;outline-offset:-3px}.auth-password-toggle:disabled{cursor:default;opacity:.5}.unified-account-page .auth-field select{width:100%;box-sizing:border-box;min-height:56px;border:1px solid #e5d4c0;border-radius:14px;background:#fffdf9;color:#49382b;padding:12px 16px;font:inherit;font-size:18px}.unified-owned{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:20px 0;font-size:16px;color:#805524}.unified-owned span{padding:12px;background:#faf0e3;border-radius:10px}.unified-link{margin-top:26px;padding-top:20px;border-top:1px solid #e5d4c0}.unified-link summary{font-size:17px;font-weight:700;cursor:pointer;min-height:44px}.unified-link p{font-size:15px;line-height:1.7;color:#806d5d}.unified-account-page .auth-preview-story-copy h1{font-size:clamp(32px,4vw,64px)}.unified-portal-account{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin:20px 0;font-size:16px;line-height:1.6}.unified-portal-account a{font-weight:700;color:#945e28;min-height:44px;display:inline-flex;align-items:center}.unified-product-status{display:block;font-size:15px;color:#805524;font-weight:700;margin:10px 0}@media (max-width:600px){.unified-account-page .auth-field select{font-size:16px;min-height:50px}.unified-owned{font-size:15px;gap:8px}.unified-account-page .auth-preview-story-copy h1{font-size:32px}}:root{--bg: #fbf5ec;--bg2: #f5ead9;--fg: #3b2a1d;--muted: #8a6f57;--gold: #b8863b;--gold-deep: #96632a;--gold-soft: rgba(184, 134, 59, .12);--gold-line: rgba(184, 134, 59, .38);--card: #fffdf9;--card2: #f7eddf;--line: #e8d7c1;--word: #a06a22;--word-zh: #96744a;--ok: #4f9e73;--bad: #c2606f;--radius: 16px;--shadow: 0 2px 10px rgba(120, 90, 50, .08);--shadow-lg: 0 6px 22px rgba(120, 90, 50, .14)}*{box-sizing:border-box}button{-webkit-tap-highlight-color:transparent;touch-action:manipulation;font-family:inherit}html,body{margin:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Segoe UI,Roboto,sans-serif;-webkit-font-smoothing:antialiased}body{background:radial-gradient(1200px 600px at 50% -10%,rgba(184,134,59,.1),transparent 62%),var(--bg)}.app{max-width:760px;margin:0 auto;padding:0 14px 70px}.topbar{position:-webkit-sticky;position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 0;background:rgba(251,245,236,.94);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--gold-line)}.brand{border:none;background:none;font-size:15px;font-weight:800;color:var(--gold-deep);letter-spacing:.3px;cursor:pointer;line-height:1.3;text-align:left;padding:0}.brand-short{display:none}.topbar-center{flex:1 1 auto;text-align:center;font-size:15px;font-weight:800;color:var(--gold-deep);letter-spacing:.3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding:0 8px}.accent-toggle{display:flex;align-items:center;gap:6px;flex:none}.accent-icon{font-size:14px;line-height:1}.accent-label{font-size:12px;color:var(--muted)}.accent-toggle button{border:1px solid var(--line);background:var(--card);color:var(--muted);padding:6px 12px;border-radius:999px;font-size:13px;cursor:pointer}.accent-toggle button.on{background:linear-gradient(180deg,var(--gold),var(--gold-deep));color:#fffaf0;border-color:var(--gold);font-weight:700}.section-title{font-size:15px;color:var(--gold-deep);letter-spacing:1px;margin:26px 4px 12px;font-weight:700}.hero{position:relative;margin:12px -14px 0;overflow:hidden;border-radius:0 0 18px 18px;box-shadow:var(--shadow)}.hero-bg{width:100%;height:auto;display:block;object-fit:cover}.part-grid{display:grid;gap:14px}.part-card{display:flex;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:12px;cursor:pointer;overflow:hidden;position:relative;box-shadow:var(--shadow);transition:transform .08s ease,border-color .15s ease,box-shadow .15s ease}.part-card:active{transform:scale(.99)}.part-card:hover{border-color:var(--gold-line);box-shadow:var(--shadow-lg)}.part-cover-wrap{position:relative;flex:none}.part-cover{width:104px;height:138px;border-radius:12px;object-fit:cover;object-position:top center;display:block;background:var(--card2)}.part-title-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.part-no{font-size:11px;font-weight:800;color:#fffaf0;background:linear-gradient(180deg,var(--gold),var(--gold-deep));padding:2px 8px;border-radius:999px;letter-spacing:.5px;flex:none}.part-info{flex:1;min-width:0;display:flex;flex-direction:column}.part-title{font-size:19px;margin:0;color:var(--fg)}.part-range{font-size:12px;color:var(--gold-deep);letter-spacing:1px;margin-top:4px}.part-intro{color:var(--muted);font-size:13px;line-height:1.6;margin:4px 0 0;flex:1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.part-go{margin-top:10px;font-size:13px;font-weight:700;color:var(--gold-deep)}.pd-hero{position:relative;margin:12px -14px 0;height:230px;overflow:hidden;display:flex;align-items:flex-end;border-radius:0 0 18px 18px;box-shadow:var(--shadow)}.pd-cover{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;object-fit:cover;object-position:top center}.pd-hero-text{position:relative;width:100%;padding:16px 18px 18px;background:linear-gradient(transparent,rgba(59,42,29,.55) 45%,rgba(59,42,29,.92));color:#fffaf0}.pd-no{font-size:12px;font-weight:800;color:#fffaf0;background:linear-gradient(180deg,var(--gold),var(--gold-deep));padding:2px 10px;border-radius:999px;letter-spacing:1px}.pd-title{font-size:26px;margin:10px 0 4px;color:#fffaf0}.pd-range{font-size:13px;color:var(--gold);letter-spacing:1px}.pd-intro{color:var(--muted);font-size:14px;line-height:1.7;margin:14px 4px 0}.pd-progress{display:flex;align-items:center;gap:10px;margin:16px 4px 4px}.pd-progress-bar{flex:1;height:8px;background:var(--card2);border-radius:999px;overflow:hidden}.pd-progress-bar span{display:block;height:100%;background:linear-gradient(90deg,var(--gold-deep),var(--gold));border-radius:999px;transition:width .3s ease}.pd-progress-label{font-size:12px;color:var(--muted);white-space:nowrap}.chapter-list{list-style:none;margin:0;padding:0;display:grid;gap:8px}.chapter-item{display:flex;align-items:center;gap:10px;background:var(--card);border:1px solid var(--line);border-left:3px solid transparent;border-radius:12px;padding:12px 14px;cursor:pointer;box-shadow:var(--shadow)}.chapter-item:active{transform:scale(.99)}.chapter-item.read{border-left-color:var(--gold)}.chapter-item.locked{opacity:.55;cursor:default}.ch-no{font-size:12px;font-weight:800;color:var(--gold-deep);flex:none;white-space:nowrap}.ch-title{flex:1;min-width:0;font-size:16px;font-weight:700;color:var(--fg);line-height:1.4}.ch-word{font-size:12px;color:var(--muted);flex:none}.ch-locked{font-size:11px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:2px 8px;flex:none}.ch-read-dot{color:var(--gold);font-weight:800;flex:none}.story-hero{position:relative;margin:12px -14px 0;height:230px;overflow:hidden;display:flex;align-items:flex-end;border-radius:0 0 18px 18px;box-shadow:var(--shadow)}.story-hero-cover{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;object-fit:cover;object-position:center center;opacity:.85}.story-hero-meta{position:relative;width:100%;padding:12px 16px 14px;background:linear-gradient(transparent,rgba(59,42,29,.62) 40%,rgba(59,42,29,.92));color:#fffaf0}.story-part-no{font-size:12px;color:var(--gold);letter-spacing:1px}.story-title{font-size:21px;margin:6px 0 4px;color:#fffaf0;line-height:1.3}.story-ch{display:block;font-size:13px;font-weight:800;color:var(--gold);letter-spacing:1px;margin-bottom:3px}.story-count{font-size:12px;color:rgba(255,250,240,.8)}.audio-section{margin:16px 0 10px}.audio-section-title{font-size:13px;color:var(--gold-deep);font-weight:700;margin-bottom:8px;display:flex;align-items:center;gap:6px}.vocab-audio{display:flex;gap:10px}.va-btn{flex:1;display:inline-flex;align-items:center;justify-content:center;gap:4px;border:1px solid var(--gold-line);background:var(--gold-soft);color:var(--gold-deep);font-weight:700;padding:11px;border-radius:12px;font-size:14px;cursor:pointer;line-height:1.2}.va-btn .va-emoji{font-size:16px}.va-btn .va-text{white-space:nowrap}.va-btn:active{transform:scale(.97)}.va-btn.va-stop{flex:0 0 auto;background:var(--card);color:var(--bad);border-color:var(--line)}.waveform{display:flex;align-items:center;gap:2px;height:40px;padding:0 4px;margin-bottom:14px;border-radius:10px;background:var(--card);border:1px solid var(--line);overflow:hidden;box-shadow:var(--shadow)}.wf-bar{flex:1;min-width:1px;border-radius:2px;background:linear-gradient(180deg,var(--gold),var(--gold-deep));opacity:.8}.tabs{display:flex;gap:8px;margin-bottom:12px;flex-wrap:wrap}.tabs button{border:1px solid var(--line);background:var(--card);color:var(--muted);padding:7px 12px;border-radius:999px;font-size:13px;cursor:pointer}.tabs button.on{background:linear-gradient(180deg,var(--gold),var(--gold-deep));color:#fffaf0;border-color:var(--gold);font-weight:700}.story-text{font-size:calc(17px * var(--reader-scale, 1));line-height:2;white-space:pre-wrap;word-break:break-word;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;color:var(--fg);box-shadow:var(--shadow)}.word{border:none;background:var(--gold-soft);color:var(--word);border-radius:7px;padding:1px 6px;margin:0 1px;cursor:pointer;font:inherit;line-height:1.7;display:inline;text-decoration:underline;-webkit-text-decoration-color:var(--gold);text-decoration-color:var(--gold);text-decoration-thickness:1.5px;text-underline-offset:.28em}.word .w-en{font-weight:700}.word .w-zh{color:var(--word-zh);font-size:.82em;margin-left:4px}.word .w-zh:before{content:"("}.word .w-zh:after{content:")"}.cloze{display:inline-flex;align-items:baseline;gap:4px}.cloze-zh{color:var(--word-zh);font-family:inherit;font-size:1em!important;font-weight:700!important;cursor:pointer;border-bottom:1px dotted var(--gold-line)}.cloze-en{border:none;border-bottom:1px dotted var(--gold-line);background:transparent;color:var(--word);font-family:inherit;font-size:1em!important;font-weight:700!important;cursor:pointer;padding:0 2px;border-radius:4px}.cloze-en:active{background:var(--gold-soft)}.cloze-input{appearance:none;-webkit-appearance:none;border:none;border-bottom:2px solid var(--gold);background:transparent;color:var(--word);font-family:inherit;font-size:1em;font-weight:700;line-height:1.6;min-width:64px;max-width:150px;padding:0 4px;outline:none;text-align:center;border-radius:0}.cloze-input{font-size:1em!important;font-weight:700!important}.cloze-input:focus{background:var(--gold-soft);border-radius:4px 4px 0 0}.cloze-input.ok{border-bottom-color:var(--ok);color:var(--ok)}.cloze-input.bad{border-bottom-color:var(--bad);color:var(--bad)}.cloze-feedback{display:inline-flex;align-items:center;justify-content:center;min-height:20px;font-size:.72em;font-weight:800;line-height:1;white-space:nowrap}.cloze-feedback.is-correct{width:20px;border-radius:50%;color:#fff;background:var(--ok);box-shadow:0 3px 10px rgba(47,125,71,.3)}.cloze-feedback.is-correct.flash{animation:cloze-check-pop .62s ease both}.cloze-feedback.is-wrong{color:var(--bad)}@keyframes cloze-check-pop{0%{opacity:0;transform:scale(.35) rotate(-18deg)}55%{opacity:1;transform:scale(1.28) rotate(5deg)}to{opacity:1;transform:scale(1) rotate(0)}}@media (prefers-reduced-motion:reduce){.cloze-feedback.is-correct.flash{animation:none}}.cloze-bar{display:flex;align-items:center;gap:10px;margin-top:12px;flex-wrap:wrap}.cloze-btn{border:1px solid var(--line);background:var(--card);color:var(--fg);padding:9px 16px;border-radius:10px;font-weight:700;font-size:14px;cursor:pointer}.cloze-btn.primary{background:linear-gradient(180deg,var(--gold),var(--gold-deep));color:#fffaf0;border-color:var(--gold)}.cloze-score{font-size:14px;color:var(--gold-deep);font-weight:700}.block{margin-top:20px}.block-title{font-size:16px;margin:0 0 10px;color:var(--fg)}.block-toggle{width:100%;text-align:left;border:1px solid var(--line);background:var(--card);color:var(--fg);padding:12px 14px;border-radius:12px;font-size:15px;font-weight:700;cursor:pointer;box-shadow:var(--shadow)}.vocab-table{margin-top:10px;overflow-x:auto;border:1px solid var(--line);border-radius:12px}.vocab-table table{width:100%;border-collapse:collapse;font-size:14px}.vocab-table th,.vocab-table td{padding:9px 12px;border-bottom:1px solid var(--line);text-align:left}.vocab-table th{background:var(--bg2);color:var(--muted);font-weight:600}.vt-word{font-weight:700;color:var(--word)}.vt-ph{color:var(--muted);font-family:Georgia,serif}.vt-play{border:none;background:none;font-size:18px;cursor:pointer}.vt-pos{color:var(--gold-deep);font-weight:700;white-space:nowrap;text-align:center;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.comic{display:grid;gap:12px}.comic-img{width:100%;border-radius:12px;border:1px solid var(--line)}.comic.empty{color:var(--muted);font-size:14px;border:1px dashed var(--line);border-radius:12px;padding:20px;text-align:center}.quiz{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}.quiz-progress{font-size:12px;color:var(--muted);margin:0 0 6px}.quiz-word{font-size:22px;font-weight:800;margin:0 0 14px;color:var(--word)}.quiz-options{display:grid;grid-template-columns:1fr 1fr;gap:10px}.quiz-opt{border:1px solid var(--line);background:var(--bg2);padding:12px;border-radius:10px;font-size:15px;cursor:pointer;color:var(--fg)}.quiz-opt.correct{background:var(--ok);color:#fffaf0;border-color:var(--ok)}.quiz-opt.wrong{background:var(--bad);color:#fffaf0;border-color:var(--bad)}.quiz.done{text-align:center}.quiz-btn{margin-top:12px;border:none;background:linear-gradient(180deg,var(--gold),var(--gold-deep));color:#fffaf0;padding:10px 18px;border-radius:10px;font-weight:700;cursor:pointer}@media (min-width: 768px){.app{max-width:900px;padding:0 24px 80px}.brand{font-size:18px}.hero{margin:16px -24px 0;border-radius:0 0 22px 22px}.hero-bg{max-height:420px}.part-grid{grid-template-columns:repeat(2,1fr);gap:16px}.part-card{flex-direction:column;padding:14px}.part-cover-wrap{width:100%}.part-cover{width:100%;height:190px;border-radius:14px}.part-title-row{margin-top:10px}.part-title{font-size:20px}.part-intro{-webkit-line-clamp:2}.pd-hero{height:280px;margin:16px -24px 0;border-radius:0 0 22px 22px}.pd-title{font-size:32px}.pd-intro{font-size:15px}.chapter-list{grid-template-columns:repeat(2,1fr);gap:10px}.chapter-item{flex-direction:column;align-items:flex-start;gap:6px;padding:14px}.ch-no{font-size:13px}.ch-title{font-size:15px}.story-hero{height:280px;margin:16px -24px 0;border-radius:0 0 22px 22px}.story-title{font-size:26px}.story-text{font-size:calc(18px * var(--reader-scale, 1));padding:22px}}@media (min-width: 1024px){.app{max-width:1100px}.hero-bg{max-height:480px}.part-cover{height:230px}.story-hero{height:340px}.story-text{font-size:calc(19px * var(--reader-scale, 1));line-height:2.1}}@media (max-width: 480px){.app{padding:0 12px calc(72px + env(safe-area-inset-bottom))}.topbar{padding:10px 0}.brand{font-size:13px;letter-spacing:0}.topbar-center{font-size:13px;font-weight:800;letter-spacing:0;padding:0 4px}.accent-label{font-size:0}.accent-label:before{content:"点读";font-size:11px}.accent-toggle button{padding:6px 10px;font-size:12px}.hero{margin:10px -12px 0;border-radius:0 0 14px 14px}.section-title{font-size:14px;margin:22px 4px 10px}.part-card{gap:12px;padding:10px}.part-cover{width:88px;height:118px}.part-title{font-size:17px}.part-no{font-size:10px;padding:1px 6px}.part-range{font-size:11px}.part-intro{font-size:12px;-webkit-line-clamp:2}.part-go{font-size:12px;margin-top:6px}.pd-hero{height:190px;margin:12px -12px 0}.pd-title{font-size:22px}.pd-intro{font-size:13px}.chapter-item{padding:11px 12px;gap:8px;flex-wrap:wrap}.ch-no{font-size:11px;flex:none}.ch-title{font-size:15px;font-weight:700;flex:1 1 100%}.ch-word{font-size:11px}.story-hero{height:220px;margin:12px -12px 0}.story-title{font-size:18px}.vocab-audio{gap:8px}.va-btn{font-size:13px;padding:12px 6px}.tabs{gap:6px}.tabs button{padding:8px 10px;font-size:12px}.story-text{font-size:calc(18px * var(--reader-scale, 1));line-height:1.9;padding:14px 12px}.word{padding:2px 5px;user-select:none;-webkit-user-select:none}.cloze{gap:3px}.cloze-bar{gap:8px}.cloze-btn{padding:11px 14px;font-size:14px}.block-title{font-size:15px}.vt-play{font-size:20px;padding:2px 6px}.vocab-table th,.vocab-table td{padding:8px 10px;font-size:13px}.quiz-word{font-size:20px}.quiz-options{gap:8px}.quiz-opt{padding:13px 10px;font-size:14px}}.gate{--gate-ivory:#fff8ee;--gate-gold:#e8b564;--gate-wine:#6b1d12;--gate-ink:#321b16;position:fixed;top:0;right:0;bottom:0;left:0;z-index:9999;width:100%;height:100vh;height:100dvh;display:grid;place-items:center;overflow:hidden;background:#2d180f}.gate-card{position:relative;width:100vw;height:100vh;height:100dvh;overflow:hidden;isolation:isolate;color:var(--gate-ink)}.gate-card:after{content:"";position:absolute;z-index:-1;top:38%;right:0;bottom:0;left:0;pointer-events:none;background:linear-gradient(to bottom,transparent 0%,rgba(255,246,229,.1) 28%,rgba(87,38,13,.18) 100%)}.gate-scene{position:absolute;z-index:-2;top:0;right:0;bottom:0;left:0;width:100%;height:100%;display:block;object-fit:cover;object-position:center top;user-select:none;-webkit-user-select:none;pointer-events:none}.gate-content{position:absolute;top:0;right:0;bottom:0;left:0;line-height:1.2}.gate-brand{position:absolute;top:max(18px,calc(env(safe-area-inset-top) + 10px));left:50%;transform:translate(-50%);display:flex;align-items:center;justify-content:center;width:max-content;max-width:calc(100% - 40px);padding:8px 18px;border:1px solid rgba(224,170,93,.82);border-radius:999px;color:#782816;background:rgba(255,248,234,.9);box-shadow:0 5px 18px rgba(68,29,12,.16);backdrop-filter:blur(7px);-webkit-backdrop-filter:blur(7px);font-family:Songti SC,STSong,serif;font-size:clamp(13px,3.6vw,17px);font-weight:800;letter-spacing:.04em;white-space:nowrap}.gate-promise{position:absolute;left:0;bottom:22%;width:100%;box-sizing:border-box;padding:0 16px;text-align:center}.gate-promise h1{width:100%;margin:0;color:var(--gate-wine);font-family:Songti SC,STSong,"Noto Serif SC",serif;font-size:clamp(35px,9.4vw,46px);font-weight:900;line-height:1.02;letter-spacing:-.035em;text-shadow:0 2px 0 rgba(255,249,238,.95),0 4px 14px rgba(116,48,18,.2)}.gate-benefits{width:100%;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:14px 0 0;color:#782c18;font-family:PingFang SC,Microsoft YaHei,sans-serif;font-size:clamp(12px,3.15vw,14px);font-weight:700}.gate-benefits span{display:flex;align-items:center;justify-content:center;min-width:0;height:34px;box-sizing:border-box;border:1px solid rgba(204,133,48,.7);border-radius:999px;background:rgba(255,250,240,.9);box-shadow:0 3px 10px rgba(82,35,14,.1);white-space:nowrap}.gate-form{position:absolute;left:16px;right:16px;bottom:max(14px,calc(env(safe-area-inset-bottom) + 10px));display:grid;grid-template-rows:54px 30px 58px;width:auto;padding:0}.gate-input-wrap{position:relative;width:100%;height:54px}.gate-input{width:100%;height:100%;box-sizing:border-box;border:1.5px solid rgba(195,119,34,.86);border-radius:999px;outline:0;padding:0 22px;color:#67321d;background:rgba(255,249,238,.94);box-shadow:inset 0 0 0 3px rgba(255,255,255,.56),0 5px 16px rgba(78,32,12,.14);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:clamp(14px,3.8vw,17px);font-weight:800;letter-spacing:.08em;text-align:center}.gate-input::placeholder{color:#a99383;font-family:PingFang SC,Microsoft YaHei,sans-serif;font-weight:500;letter-spacing:.02em}.gate-input:focus-visible{box-shadow:inset 0 0 0 3px rgba(255,255,255,.62),0 0 0 3px rgba(132,64,20,.28)}.gate-message{display:flex;align-items:center;justify-content:center;margin:0;color:#7c351f;font-family:PingFang SC,Microsoft YaHei,sans-serif;font-size:clamp(11px,2.9vw,13px);font-weight:700;text-align:center;white-space:nowrap;text-shadow:0 1px 0 rgba(255,248,236,.9)}.gate-message-error{color:#b22620}.gate-btn{position:relative;width:100%;height:58px;display:flex;align-items:center;justify-content:center;box-sizing:border-box;border:1.5px solid #f0c878;border-radius:999px;padding:0 56px 0 24px;cursor:pointer;color:#fffaf1;background:linear-gradient(180deg,#c87a2d,#a84e19,#7d2b11);box-shadow:inset 0 1px rgba(255,255,255,.55),inset 0 -2px rgba(78,25,7,.22),0 7px 18px rgba(75,28,8,.2);font-family:Songti SC,STSong,serif;font-size:clamp(20px,5.3vw,25px);font-weight:900;letter-spacing:.08em;text-shadow:0 2px 2px rgba(71,21,5,.35);transition:filter .16s ease,transform .12s ease,box-shadow .16s ease}.gate-btn-label,.gate-btn-arrow{position:relative;z-index:1}.gate-btn-arrow{position:absolute;right:12px;top:50%;display:grid;place-items:center;width:36px;height:36px;transform:translateY(-50%);border-radius:50%;color:#9e4318;background:#fff3d9;text-shadow:none;font-family:Georgia,serif;font-size:24px;line-height:1}.gate-btn:hover{filter:brightness(1.06) saturate(1.03)}.gate-btn:active{transform:translateY(1px) scale(.99)}.gate-btn:focus-visible{outline:3px solid rgba(255,244,216,.8);outline-offset:3px}.gate-btn:disabled{opacity:.68;cursor:wait;filter:saturate(.65)}.gate-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media (min-width:700px){.gate-card{width:calc(100dvh * 9 / 19.5);max-width:520px}.gate-promise h1{font-size:43px}.gate-benefits{font-size:13px}}@media (max-height:700px){.gate-promise{bottom:22%}.gate-promise h1{font-size:clamp(31px,8.8vw,39px)}.gate-benefits{margin-top:10px}.gate-form{grid-template-rows:48px 26px 52px}.gate-input-wrap{height:48px}.gate-btn{height:52px}}@media (prefers-reduced-motion:reduce){.gate-btn{transition:none}}.auth-preview-page{--auth-paper:#f7f1e6;--auth-paper-deep:#eee2cf;--auth-ink:#271914;--auth-muted:#79675d;--auth-wine:#7b2118;--auth-wine-dark:#53140f;--auth-gold:#c89b58;--auth-display:"Kaiti SC","STKaiti","KaiTi","FZKai-Z03S",serif;position:fixed;top:0;right:0;bottom:0;left:0;z-index:10000;overflow:auto;color:var(--auth-ink);background:radial-gradient(circle at 18% 12%,rgba(196,145,74,.17),transparent 29%),linear-gradient(135deg,#1a110d,#2b1912 48%,#130d0a);font-family:PingFang SC,Microsoft YaHei,sans-serif}.auth-loading-page{min-height:100dvh;display:grid;place-items:center;color:#ead2a3;background:radial-gradient(circle at 50% 35%,#3a2419 0,#17100d 48%,#0b0807);font-family:STKaiti,KaiTi,Kaiti SC,serif;letter-spacing:.08em}.auth-preview-shell{width:min(1180px,calc(100% - 64px));min-height:min(760px,calc(100dvh - 64px));display:grid;grid-template-columns:minmax(0,1.16fr) minmax(430px,.84fr);margin:32px auto;overflow:hidden;border:1px solid rgba(235,200,144,.38);border-radius:34px;background:var(--auth-paper);box-shadow:0 34px 90px rgba(0,0,0,.42)}.auth-preview-story{position:relative;min-height:696px;overflow:hidden;isolation:isolate;color:#fff7e8;background:#17110e}.auth-preview-story>img{position:absolute;z-index:-3;top:0;right:0;bottom:0;left:0;width:100%;height:100%;object-fit:cover;object-position:50% center;filter:saturate(.86) contrast(1.04)}.auth-preview-story-shade{position:absolute;z-index:-2;top:0;right:0;bottom:0;left:0;background:linear-gradient(180deg,rgba(8,5,4,.42),rgba(15,8,5,.07) 34%,rgba(19,9,6,.84)),linear-gradient(90deg,rgba(10,5,3,.12),transparent 55%)}.auth-preview-story:after{content:"";position:absolute;z-index:-1;top:18px;right:18px;bottom:18px;left:18px;border:1px solid rgba(235,201,139,.42);border-radius:23px;pointer-events:none}.auth-preview-brand{position:absolute;top:40px;left:42px;display:flex;align-items:center;gap:12px}.auth-preview-brand>span:last-child{display:grid;gap:2px}.auth-preview-brand b{font-family:Songti SC,STSong,serif;font-size:18px;letter-spacing:.08em}.auth-preview-brand small{color:rgba(255,244,224,.67);font-size:9px;letter-spacing:.16em}.auth-preview-story-copy{position:absolute;left:50px;right:48px;bottom:82px;max-width:560px}.auth-preview-kicker{display:flex;align-items:center;gap:10px;margin:0 0 14px;color:#f6dca2;font-family:var(--auth-display);font-size:22px;font-weight:800;letter-spacing:.075em;text-shadow:0 2px 14px rgba(0,0,0,.68)}.auth-preview-kicker:before{content:"";width:36px;height:1px;flex:none;background:linear-gradient(90deg,#d29e4d,#f1d79d);box-shadow:0 0 8px rgba(232,188,112,.55)}.auth-preview-story-copy h1{margin:0;color:#f0d59d;background:linear-gradient(180deg,#fff0c7,#edcd91 52%,#c89446);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;font-family:var(--auth-display);font-size:clamp(46px,4.8vw,68px);font-weight:700;line-height:1.02;letter-spacing:-.025em;-webkit-text-stroke:.22px rgba(255,244,213,.32);filter:drop-shadow(0 4px 12px rgba(0,0,0,.55))}.auth-preview-story-copy>p:not(.auth-preview-kicker){max-width:500px;margin:20px 0 0;color:rgba(255,247,233,.79);font-size:15px;line-height:1.75}.auth-preview-loop{display:flex;align-items:center;gap:9px;width:max-content;max-width:100%;margin-top:22px;padding:10px 14px;border:1px solid rgba(230,191,126,.45);border-radius:999px;background:rgba(25,13,8,.48);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);font-size:12px;font-weight:800}.auth-preview-loop i{color:#dcb16c;font-family:Georgia,serif;font-style:normal}.auth-preview-edition{position:absolute;right:40px;bottom:28px;margin:0;color:rgba(255,244,225,.58);font-size:10px;letter-spacing:.08em}.auth-preview-account{position:relative;display:flex;flex-direction:column;padding:52px 52px 34px;background:linear-gradient(rgba(109,66,38,.035) 1px,transparent 1px),var(--auth-paper);background-size:100% 28px}.auth-preview-badge{position:absolute;top:22px;right:24px;padding:5px 9px;border:1px solid rgba(123,33,24,.18);border-radius:999px;color:var(--auth-wine);background:rgba(255,255,255,.44);font-size:10px;font-weight:800;letter-spacing:.08em}.auth-preview-account-head p{margin:0 0 7px;color:var(--auth-wine);font-size:12px;font-weight:800;letter-spacing:.08em}.auth-preview-account-head h2{margin:0;font-family:Songti SC,STSong,serif;font-size:36px;font-weight:900;letter-spacing:-.03em}.auth-preview-account-head>span{display:block;margin-top:9px;color:var(--auth-muted);font-size:13px;line-height:1.65}.auth-preview-tabs{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:4px;margin:25px 0 20px;padding:4px;border:1px solid rgba(102,69,49,.13);border-radius:14px;background:#e9decc}.auth-preview-tabs button{height:42px;border:0;border-radius:10px;cursor:pointer;color:#826d60;background:transparent;font-size:13px;font-weight:800;transition:background .16s ease,color .16s ease,box-shadow .16s ease}.auth-preview-tabs button.is-active{color:var(--auth-wine);background:#fffaf1;box-shadow:0 4px 12px rgba(73,44,27,.1)}.auth-preview-tabs button:focus-visible,.auth-preview-form input:focus-visible,.auth-preview-submit:focus-visible,.auth-preview-forgot:focus-visible{outline:3px solid rgba(176,119,49,.28);outline-offset:2px}.auth-preview-form{display:grid;gap:13px}.auth-field{display:grid;gap:7px}.auth-field-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.auth-field-head b{font-size:12px}.auth-field-head small{color:#9a877a;font-size:10px}.auth-field input{width:100%;height:48px;box-sizing:border-box;border:1px solid rgba(82,53,37,.16);border-radius:12px;outline:0;padding:0 15px;color:var(--auth-ink);background:rgba(255,252,246,.88);box-shadow:inset 0 1px rgba(255,255,255,.8);font-size:14px}.auth-field input::placeholder{color:#b0a197}.auth-field input:focus-visible{border-color:rgba(123,33,24,.45);background:#fffdf9}.auth-preview-forgot{justify-self:end;margin:-4px 0 2px;border:0;padding:2px;cursor:pointer;color:var(--auth-wine);background:transparent;font-size:11px;font-weight:800}.auth-preview-submit{width:100%;height:52px;display:flex;align-items:center;justify-content:space-between;margin-top:3px;border:1px solid #a86637;border-radius:13px;padding:0 8px 0 18px;cursor:pointer;color:#fff9ed;background:linear-gradient(135deg,var(--auth-wine) 0%,var(--auth-wine-dark) 100%);box-shadow:0 9px 22px rgba(84,27,18,.18);font-family:Songti SC,STSong,serif;font-size:17px;font-weight:900;letter-spacing:.05em}.auth-preview-submit b{display:grid;place-items:center;width:36px;height:36px;border-radius:10px;color:var(--auth-wine-dark);background:#e8bd78;font-family:Georgia,serif;font-size:18px}.auth-preview-notice{min-height:16px;margin:0;color:#8b776b;font-size:10px;line-height:1.5;text-align:center}.auth-preview-notice.is-error{color:#a32b20;font-weight:800}.auth-preview-submit:disabled{cursor:wait;opacity:.68;filter:saturate(.65)}.auth-preview-sync{margin-top:auto;padding-top:19px;border-top:1px solid rgba(105,71,51,.13)}.auth-preview-sync>span{display:block;margin-bottom:9px;color:#9b887a;font-size:10px}.auth-preview-sync>div{display:flex;flex-wrap:wrap;gap:7px 12px}.auth-preview-sync b{color:#5f4a3e;font-size:10px}.auth-preview-sync b:first-letter{color:#5d7652}@media (max-width:900px){.auth-preview-page{position:absolute;min-height:100dvh}.auth-preview-shell{width:100%;min-height:100dvh;grid-template-columns:1fr;margin:0;border:0;border-radius:0;box-shadow:none}.auth-preview-story{min-height:310px}.auth-preview-story:after{top:12px;right:12px;bottom:12px;left:12px;border-radius:18px}.auth-preview-story>img{object-position:49% center}.auth-preview-brand{top:28px;left:28px}.auth-preview-brand b{font-size:16px}.auth-preview-story-copy{left:28px;right:26px;bottom:34px}.auth-preview-kicker{margin-bottom:8px;font-size:16px;letter-spacing:.045em}.auth-preview-kicker:before{width:24px}.auth-preview-story-copy h1{max-width:360px;font-size:38px}.auth-preview-story-copy>p:not(.auth-preview-kicker){display:none}.auth-preview-loop{margin-top:13px;padding:8px 11px;font-size:10px}.auth-preview-edition{display:none}.auth-preview-account{min-height:calc(100dvh - 310px);padding:34px 24px 26px}.auth-preview-badge{top:18px;right:20px}.auth-preview-account-head h2{font-size:30px}.auth-preview-tabs{margin:20px 0 18px}.auth-preview-sync{margin-top:22px}}@media (max-width:430px){.auth-preview-story{min-height:250px}.auth-preview-story-copy{bottom:20px}.auth-preview-story-copy h1{font-size:33px}.auth-preview-account{min-height:calc(100dvh - 250px);padding:26px 18px 22px}.auth-preview-badge{top:14px}.auth-preview-account-head>span{padding-right:4px}.auth-field input{height:47px}.auth-preview-submit{height:51px}}@media (prefers-reduced-motion:reduce){.auth-preview-tabs button{transition:none}}.topbar-tools{display:flex;align-items:center;gap:10px;flex:none}.account-logout{border:1px solid #dcccae;border-radius:999px;min-height:36px;padding:7px 12px;color:#735c45;background:#fffaf0;font-size:13px;font-weight:700;white-space:nowrap;cursor:pointer}.account-logout:disabled{cursor:wait;opacity:.6}.notebook-link{border:1px solid var(--gold-line);border-radius:999px;padding:7px 11px;color:var(--gold-deep);background:var(--card);font-size:12px;font-weight:800;cursor:pointer}.notebook-link b{display:inline-grid;place-items:center;min-width:18px;height:18px;margin-left:3px;padding:0 4px;border-radius:999px;color:#fffaf0;background:var(--gold-deep);font-size:10px}.notebook-link.on{color:#fffaf0;background:var(--gold-deep)}.notebook-link.on b{color:var(--gold-deep);background:#fffaf0}.learning-dashboard{position:relative;display:grid;grid-template-columns:minmax(0,1.45fr) minmax(250px,.75fr);gap:18px 24px;margin:20px 0 6px;padding:24px;overflow:hidden;border:1px solid var(--gold-line);border-radius:22px;background:linear-gradient(135deg,rgba(255,255,255,.78),rgba(255,249,239,.94)),var(--card);box-shadow:var(--shadow-lg)}.learning-dashboard:after{content:"";position:absolute;top:-54px;right:-36px;width:180px;height:180px;border:1px solid rgba(184,134,59,.16);border-radius:50%;box-shadow:0 0 0 22px rgba(184,134,59,.04),0 0 0 46px rgba(184,134,59,.024);pointer-events:none}.learning-dashboard-copy,.learning-stats,.learning-loop{position:relative;z-index:1}.learning-eyebrow,.notebook-eyebrow,.chapter-summary-eyebrow{color:var(--gold-deep);font-family:Georgia,Times New Roman,serif;font-size:11px;font-weight:800;letter-spacing:.16em}.learning-dashboard h1{margin:7px 0 5px;font-family:Songti SC,STSong,serif;font-size:28px}.learning-dashboard p{margin:0;color:var(--muted);font-size:14px;line-height:1.65}.learning-actions{display:flex;gap:10px;margin-top:18px}.learning-actions button{border-radius:12px;padding:11px 17px;font-weight:800;cursor:pointer}.learning-primary{border:1px solid var(--gold-deep);color:#fffaf0;background:linear-gradient(135deg,#b87a2e,#80501f)}.learning-primary span{margin-left:12px}.learning-secondary{border:1px solid var(--line);color:var(--fg);background:var(--card)}.learning-stats{display:grid;grid-template-columns:1fr 1fr;gap:8px;align-self:stretch}.learning-stats div{display:flex;flex-direction:column;justify-content:center;min-height:72px;padding:12px;border:1px solid var(--line);border-radius:14px;background:rgba(255,253,249,.82)}.learning-stats b{color:var(--gold-deep);font-family:Georgia,serif;font-size:24px}.learning-stats span{color:var(--muted);font-size:11px}.learning-loop{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:8px;padding-top:16px;border-top:1px solid var(--line)}.learning-loop span{color:var(--fg);font-size:13px;font-weight:700;white-space:nowrap}.learning-loop b{margin-right:5px;color:var(--gold);font-family:Georgia,serif;font-size:11px}.learning-loop i{color:var(--gold);font-style:normal}.reader-toolbar{position:-webkit-sticky;position:sticky;top:58px;z-index:14;display:flex;align-items:center;gap:8px;margin:12px 0;padding:8px;border:1px solid var(--line);border-radius:14px;background:rgba(255,253,249,.94);box-shadow:var(--shadow);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.reader-toolbar>button,.reader-font button{border:1px solid var(--line);border-radius:9px;padding:8px 11px;color:var(--fg);background:var(--card);font-size:12px;font-weight:750;cursor:pointer}.reader-toolbar .reader-wordcards{color:#fffaf0;border-color:var(--gold-deep);background:var(--gold-deep)}.reader-font{display:flex;align-items:center;gap:4px;margin-left:auto}.reader-font span{min-width:38px;color:var(--muted);font-size:11px;text-align:center}.reader-font button{padding:7px 8px}.mode-hint{margin:-4px 2px 10px;color:var(--muted);font-size:12px}.practice-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:9px;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:var(--card)}.practice-head div{display:flex;flex-direction:column;gap:2px}.practice-head strong{color:var(--gold-deep);font-size:14px}.practice-head span{color:var(--muted);font-size:11px}.practice-head>b{color:var(--ok);font-size:13px;white-space:nowrap}.cloze-btn:disabled{opacity:.45;cursor:not-allowed}.word-card-layer{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;display:grid;place-items:center;padding:18px}.word-card-backdrop{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;border:0;background:rgba(40,25,16,.58);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);cursor:pointer}.word-card-shell{position:relative;width:min(560px,100%);max-height:calc(100dvh - 36px);overflow:auto}.word-card{padding:24px;border:1px solid rgba(232,196,139,.9);border-radius:24px;color:var(--fg);background:linear-gradient(180deg,rgba(255,255,255,.96),rgba(255,249,239,.98)),var(--card);box-shadow:0 24px 70px rgba(49,29,16,.28)}.word-card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.word-card-count{color:var(--gold-deep);font-size:11px;font-weight:800;letter-spacing:.08em}.word-card h2{margin:3px 0 0;font-family:Georgia,Times New Roman,serif;font-size:38px;line-height:1.1}.word-card-close{width:34px;height:34px;border:1px solid var(--line);border-radius:50%;color:var(--muted);background:var(--card);font-size:22px;cursor:pointer}.word-card-pronunciation{display:flex;align-items:center;gap:7px;margin-top:13px;flex-wrap:wrap}.word-card-pronunciation>span{margin-right:auto;color:var(--muted);font-family:Georgia,serif;font-size:15px}.word-card-pronunciation button{border:1px solid var(--line);border-radius:999px;padding:7px 10px;color:var(--fg);background:var(--card2);cursor:pointer}.word-card-pronunciation button:disabled{opacity:.4}.word-card-meaning{display:flex;align-items:baseline;gap:9px;margin:20px 0 0;font-size:20px;font-weight:750}.word-card-meaning b{color:var(--gold-deep);font-family:Georgia,serif;font-size:12px}.word-card-context{margin:17px 0;padding:13px 15px;border-left:3px solid var(--gold);border-radius:0 11px 11px 0;color:#5f4a39;background:var(--bg2);font-size:14px;line-height:1.7}.word-card-context span{display:block;margin-bottom:3px;color:var(--gold-deep);font-size:10px;font-weight:800;letter-spacing:.12em}.word-card-state{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:17px}.word-card-state>span{color:var(--muted);font-size:12px;white-space:nowrap}.word-card-state>div{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;flex:1}.word-card-state button{border:1px solid var(--line);border-radius:9px;padding:9px 7px;color:var(--fg);background:var(--card);font-weight:700;cursor:pointer}.word-card-state button.on.unfamiliar{color:#fff;border-color:#9e5d42;background:#9e5d42}.word-card-state button.on.fuzzy{color:#553a0e;border-color:#e4bd68;background:#f2d994}.word-card-state button.on.mastered{color:#fff;border-color:var(--ok);background:var(--ok)}.word-card-notebook{width:100%;margin-top:10px;border:1px solid var(--gold-line);border-radius:10px;padding:10px;color:var(--gold-deep);background:var(--gold-soft);font-weight:800;cursor:pointer}.word-card-notebook.on{color:#fffaf0;border-color:var(--gold-deep);background:var(--gold-deep)}.word-card-nav{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}.word-card-nav button{border:1px solid var(--line);border-radius:10px;padding:11px;color:var(--fg);background:var(--card);font-weight:750;cursor:pointer}.word-card-nav button:disabled{opacity:.35;cursor:not-allowed}.chapter-summary{margin-top:24px;padding:22px;border:1px solid var(--gold-line);border-radius:20px;text-align:center;background:var(--card);box-shadow:var(--shadow)}.chapter-summary h2{margin:6px 0 16px;font-family:Songti SC,STSong,serif;font-size:23px}.chapter-summary-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.chapter-summary-stats div{display:flex;flex-direction:column;gap:2px;padding:11px 5px;border-radius:11px;background:var(--bg2)}.chapter-summary-stats b{color:var(--gold-deep);font-family:Georgia,serif;font-size:22px}.chapter-summary-stats span{color:var(--muted);font-size:11px}.summary-card-button{margin-top:15px;border:1px solid var(--gold-deep);border-radius:11px;padding:11px 20px;color:#fffaf0;background:var(--gold-deep);font-weight:800;cursor:pointer}.chapter-pagination{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}.chapter-pagination button{border:1px solid var(--line);border-radius:12px;padding:13px;color:var(--fg);background:var(--card);font-weight:800;cursor:pointer}.chapter-pagination button:last-child{color:#fffaf0;border-color:var(--gold-deep);background:var(--gold-deep)}.chapter-pagination button:disabled{opacity:.35;cursor:not-allowed}.notebook-page{padding-top:16px}.notebook-hero{position:relative;padding:28px;overflow:hidden;border:1px solid var(--gold-line);border-radius:22px;background:linear-gradient(135deg,#fffdf9,#f6e9d7);box-shadow:var(--shadow)}.notebook-hero:after{content:"Aa";position:absolute;right:22px;bottom:-20px;color:rgba(184,134,59,.13);font-family:Georgia,serif;font-size:120px;font-weight:800}.notebook-hero h1{margin:5px 0;font-family:Songti SC,STSong,serif;font-size:34px}.notebook-hero p{max-width:530px;margin:0;color:var(--muted);font-size:14px;line-height:1.7}.notebook-hero strong{position:absolute;z-index:1;right:28px;top:30px;color:var(--gold-deep);font-family:Georgia,serif;font-size:30px}.notebook-hero strong small{font-family:inherit;font-size:11px}.notebook-tools{position:-webkit-sticky;position:sticky;top:58px;z-index:12;margin:14px 0;padding:10px;border:1px solid var(--line);border-radius:14px;background:rgba(251,245,236,.95);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.notebook-search{display:flex;align-items:center;gap:7px;padding:0 11px;border:1px solid var(--line);border-radius:10px;background:var(--card)}.notebook-search span{color:var(--gold-deep);font-size:22px}.notebook-search input{width:100%;border:0;outline:0;padding:11px 0;color:var(--fg);background:transparent;font:inherit}.notebook-filters{display:flex;gap:7px;margin-top:9px;overflow-x:auto;scrollbar-width:none}.notebook-filters::-webkit-scrollbar{display:none}.notebook-filters button{flex:none;border:1px solid var(--line);border-radius:999px;padding:7px 11px;color:var(--muted);background:var(--card);font-size:12px;font-weight:700;cursor:pointer}.notebook-filters button.on{color:#fffaf0;border-color:var(--gold-deep);background:var(--gold-deep)}.notebook-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.notebook-word{padding:17px;border:1px solid var(--line);border-radius:16px;background:var(--card);box-shadow:var(--shadow)}.notebook-word header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.notebook-word h2{margin:0;color:var(--fg);font-family:Georgia,serif;font-size:25px}.notebook-word header div>span{color:var(--muted);font-family:Georgia,serif;font-size:12px}.word-status{flex:none;border-radius:999px;padding:4px 8px;color:var(--muted);background:var(--bg2);font-size:10px;font-weight:800}.word-status-unfamiliar{color:#8a3f2f;background:#f4ded5}.word-status-fuzzy{color:#755213;background:#f6e9b8}.word-status-mastered{color:#2f7450;background:#dff0e6}.notebook-meaning{margin:12px 0 7px;font-size:15px;font-weight:700}.notebook-context{min-height:44px;margin:0;color:var(--muted);font-size:12px;line-height:1.6}.notebook-meta{display:flex;gap:8px;margin-top:10px;color:var(--gold-deep);font-size:10px}.notebook-actions{display:flex;gap:6px;margin-top:13px;padding-top:12px;border-top:1px solid var(--line)}.notebook-actions button{flex:1;border:1px solid var(--line);border-radius:8px;padding:8px 5px;color:var(--fg);background:var(--card2);font-size:11px;font-weight:700;cursor:pointer}.notebook-actions button.danger{color:var(--bad)}.notebook-empty{padding:70px 20px;border:1px dashed var(--gold-line);border-radius:20px;text-align:center;background:rgba(255,253,249,.62)}.notebook-empty>span{color:var(--gold);font-size:34px}.notebook-empty h2{margin:8px 0 5px;font-family:Songti SC,STSong,serif}.notebook-empty p{margin:0;color:var(--muted);font-size:13px}button:focus-visible,input:focus-visible{outline:3px solid rgba(184,134,59,.3);outline-offset:2px}@media (max-width:700px){.topbar-tools{gap:5px}.notebook-link{padding:6px 8px}.learning-dashboard{grid-template-columns:1fr;padding:18px}.learning-stats{grid-template-columns:repeat(4,1fr)}.learning-stats div{min-height:62px;padding:9px 5px;text-align:center}.learning-stats b{font-size:20px}.learning-loop{display:grid;grid-template-columns:1fr 1fr}.learning-loop i{display:none}.reader-toolbar,.notebook-tools{top:52px}.notebook-grid{grid-template-columns:1fr}}@media (max-width:480px){.brand-full{display:none}.brand-short{display:inline;white-space:nowrap}.topbar-center{display:none}.notebook-link{font-size:11px}.notebook-link b{min-width:16px;height:16px}.accent-icon,.accent-label{display:none}.accent-toggle{gap:3px}.accent-toggle button{padding:6px 8px}.learning-dashboard{margin-top:14px;border-radius:17px}.learning-dashboard h1{font-size:23px}.learning-actions{display:grid;grid-template-columns:1.25fr 1fr}.learning-actions button{padding:11px 8px;font-size:12px}.learning-stats{grid-template-columns:1fr 1fr}.learning-loop span{font-size:12px}.reader-toolbar{margin-left:-4px;margin-right:-4px;overflow-x:auto}.reader-toolbar>button{white-space:nowrap}.reader-font{margin-left:0;flex:none}.word-card-layer{align-items:end;padding:0}.word-card-shell{width:100%;max-height:88dvh}.word-card{padding:20px 17px calc(20px + env(safe-area-inset-bottom));border-radius:22px 22px 0 0}.word-card h2{font-size:34px}.word-card-state{align-items:stretch;flex-direction:column}.word-card-state>span{align-self:flex-start}.chapter-summary{padding:18px 12px}.chapter-summary h2{font-size:20px}.notebook-hero{padding:22px 18px}.notebook-hero h1{font-size:28px}.notebook-hero strong{position:relative;top:auto;right:auto;display:block;margin-top:10px}.notebook-actions{flex-wrap:wrap}.notebook-actions button{flex:1 1 30%}.practice-head{align-items:flex-start}}@media (prefers-reduced-motion:reduce){.learning-primary,.word-card-layer,.word-card{scroll-behavior:auto;transition:none}}.practice-input-tools{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;margin:10px 0;font-size:14px}.practice-input-tools label{display:inline-flex;align-items:center;gap:7px;min-height:40px;cursor:pointer}.practice-input-tools input[type=checkbox]{width:18px;height:18px}.practice-handwriting-help{margin:8px 0 16px;color:var(--muted);font-size:13px;line-height:1.7}.practice-handwriting-help summary{cursor:pointer;padding:6px 0}.practice-handwriting-help p{margin:6px 0}.cloze-wrap .cloze{position:relative;box-sizing:border-box;max-width:100%;padding-right:0;white-space:normal;flex-wrap:wrap}.cloze-wrap .cloze-input{box-sizing:border-box;width:var(--practice-width, 10ch);max-width:100%;min-width:64px;min-height:36px;padding:4px;line-height:1.5}.cloze-wrap .cloze-feedback{position:static;flex:none;align-self:center;white-space:nowrap;margin:0 2px 0 4px}.cloze-answer{display:inline-flex;align-items:baseline;max-width:100%;min-width:0;vertical-align:baseline}.cloze-answer .cloze-input{min-width:0;flex-shrink:1}.practice-head .practice-head-actions{flex:none;align-items:flex-end;gap:6px}.practice-head-actions b{color:var(--ok, #16815f);font-size:13px;white-space:nowrap}.practice-head .practice-restart{min-height:44px;padding:8px 12px;border-radius:10px;white-space:nowrap;cursor:pointer}.cloze-wrap .cloze{margin-right:.12em}.course-portal{max-width:1060px;margin:0 auto;padding:0 36px}.course-header{min-height:88px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px}.course-brand{display:flex;align-items:center;gap:10px;color:var(--fg);text-decoration:none;font-size:17px;font-weight:700}.course-brand>span{background:var(--fg);color:var(--card);padding:7px 9px;border-radius:5px;font-family:Songti SC,STSong,serif;font-size:20px}.course-header button,.course-return,.course-auth-back{border:0;background:transparent;color:var(--gold-deep);cursor:pointer;min-height:44px;font-size:14px}.course-intro{padding:56px 0 42px}.course-eyebrow{font-size:12px;letter-spacing:.12em;color:var(--gold-deep);font-weight:600}.course-intro h1{font-family:Songti SC,STSong,SimSun,serif;font-size:clamp(32px,4.4vw,48px);font-weight:700;line-height:1.45;margin:18px 0;letter-spacing:.02em}.course-intro>p:not(.course-eyebrow){color:var(--muted);line-height:1.8;font-size:15px}.course-reading-line{display:flex;align-items:center;gap:16px;color:var(--muted);font-size:12px;margin-top:28px}.course-reading-line i{font-style:normal;color:var(--gold-line)}.course-section-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin:24px 0 18px}.course-section-head h2{font-size:20px;margin:0}.course-section-head>span{color:var(--muted);font-size:12px}.course-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.course-card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:26px 28px 16px;position:relative;overflow:hidden}.course-card:before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--gold-line)}.course-card-ielts:before{background:var(--gold)}.course-card-head{display:flex;gap:12px;justify-content:space-between;align-items:center}.course-card-head>span{font-size:11px;letter-spacing:.12em;color:var(--muted)}.course-card-head small{padding:5px 9px;font-size:11px;border-radius:5px;background:var(--bg2);color:var(--gold-deep)}.course-card h3{font-family:Songti SC,STSong,SimSun,serif;font-size:32px;margin:25px 0 14px}.course-card h3 span{font-family:-apple-system,BlinkMacSystemFont,PingFang SC,sans-serif;font-size:13px;font-weight:400;color:var(--muted);margin-left:12px}.course-card>p{font-size:14px;color:var(--muted);line-height:1.8;min-height:50px;margin:0 0 20px}.course-card>button,.course-card>.course-external-link{width:100%;background:none;border:0;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;padding:16px 0 6px;min-height:48px;color:var(--fg);font-size:14px;cursor:pointer}.course-card:hover{border-color:var(--gold-line)}.course-card>button:hover,.course-card>.course-external-link:hover{color:var(--gold-deep)}.course-owned-list{display:flex;flex-wrap:wrap;gap:12px}.course-owned-list>button{border:1px solid var(--gold-line);border-radius:12px;background:var(--card2);color:var(--fg);padding:22px 24px;flex:1 1 280px;display:flex;align-items:center;justify-content:space-between;gap:20px;text-align:left;cursor:pointer}.course-owned-list small,.course-owned-list strong{display:block}.course-owned-list small{font-size:10px;color:var(--muted);letter-spacing:.1em;margin-bottom:8px}.course-owned-list strong{font-size:19px}.course-owned-list b{font-size:13px;color:var(--gold-deep)}.course-owned{margin-bottom:36px}.course-footnote{color:var(--muted);line-height:1.8;font-size:12px;margin:24px 0 54px}.course-portal footer{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;border-top:1px solid var(--line);padding:26px 0 36px;font-size:12px;color:var(--muted)}.course-notice{padding:16px;background:var(--card2);border-radius:8px;font-size:14px;line-height:1.8}.course-notice button,.course-sync-error button{border:1px solid var(--gold-line);color:var(--gold-deep);background:var(--card);border-radius:6px;min-height:44px;padding:8px 12px;cursor:pointer}.course-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:200;background:rgba(38,27,19,.42);display:flex;align-items:center;justify-content:center;padding:24px}.course-dialog{position:relative;width:100%;max-width:460px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:34px;box-shadow:var(--shadow-lg);max-height:90vh;max-height:90dvh;overflow-y:auto}.course-dialog h2{font-size:24px;line-height:1.5;margin:18px 0;padding-right:8px}.course-dialog p{color:var(--muted);line-height:1.85;font-size:14px}.course-dialog .course-eyebrow{font-size:11px;color:var(--gold-deep)}.course-dialog button{cursor:pointer;min-height:44px;border-radius:8px;padding:10px 16px;border:1px solid var(--line);background:var(--card);color:var(--fg);font-size:14px}.course-dialog .course-dialog-close{position:absolute;right:10px;top:10px;background:transparent;border:0;font-size:24px}.course-dialog .course-primary{background:var(--gold-deep);border-color:var(--gold-deep);color:#fff;width:100%}.course-dialog-actions{display:grid;gap:10px;margin-top:24px}.course-dialog-actions a{color:var(--gold-deep);text-align:center;padding:12px;font-size:14px}.course-dialog label{display:block;font-size:13px;margin:16px 0}.course-dialog input{display:block;width:100%;margin-top:8px;border:1px solid var(--line);border-radius:8px;padding:12px;min-height:46px;font-size:16px;background:#fff;color:var(--fg)}.course-dialog .course-error{color:#983a36}.course-dialog button:disabled{opacity:.6;cursor:wait}.course-portal :focus-visible,.course-dialog :focus-visible,.course-return:focus-visible,.course-auth-back:focus-visible{outline:2px solid var(--gold-deep);outline-offset:4px}.course-auth-back{position:absolute;top:12px;left:20px;z-index:5}.course-return{padding:10px 0}.course-sync-error{max-width:540px;margin:80px auto;padding:24px;line-height:1.8}.course-sync-error button{margin:8px}@media (max-width: 600px){.course-portal{padding:0 22px}.course-header{min-height:76px}.course-brand{font-size:15px;gap:8px}.course-header button{font-size:12px}.course-intro{padding:34px 0 28px}.course-intro h1{font-size:33px}.course-reading-line{gap:12px}.course-section-head h2{font-size:18px}.course-section-head>span{font-size:11px}.course-grid{grid-template-columns:minmax(0,1fr);gap:14px}.course-card{padding:22px 24px 14px}.course-card>p{min-height:auto}.course-card h3{margin:18px 0 12px}.course-overlay{padding:18px}.course-dialog{padding:28px 24px}.course-dialog h2{font-size:22px}.course-owned-list>button{padding:20px}}@media (min-width: 601px) and (max-width: 800px){.course-grid{grid-template-columns:minmax(0,1fr)}}.course-external-link{text-decoration:none}body{background:var(--bg)}.app{max-width:1120px;padding:0 28px 70px}.topbar{background:rgba(247,248,250,.96)}.course-portal{max-width:1060px}.course-header{min-height:76px}.course-brand>span{background:var(--gold-deep)}.course-intro{padding:36px 0 24px;text-align:center}.course-intro h1{font-family:inherit;font-size:34px;letter-spacing:0;line-height:1.5;margin:12px 0}.course-intro h1 br{display:none}.course-reading-line{justify-content:center;margin-top:20px}.course-category-tabs{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;padding:6px 0 24px}.course-category-tabs button{min-height:44px;padding:9px 20px;border:1px solid transparent;border-radius:24px;background:transparent;color:var(--muted);font-size:14px;cursor:pointer}.course-category-tabs button[aria-pressed=true]{color:#fff;background:var(--gold-deep)}.course-category-tabs button:hover{border-color:var(--gold-line)}.course-grid{grid-template-columns:minmax(0,1fr);gap:16px}.course-card{display:grid;grid-template-columns:112px minmax(0,1fr);gap:24px;padding:24px;border-radius:12px}.course-card:before{display:none}.course-book-cover{width:112px;height:154px;border-radius:7px;overflow:hidden;align-self:start;background:#e8eff8}.course-book-cover>img{width:100%;height:100%;object-fit:cover}.course-book-cover>div{display:flex;flex-direction:column;height:100%;justify-content:space-between;padding:16px 12px;border:1px solid var(--line);border-left:6px solid #bdcde2;border-radius:7px;color:#4d6684}.course-book-cover small{font-size:9px;letter-spacing:.05em}.course-book-cover strong{font-size:25px}.course-book-cover span{font-size:9px}.course-book-info{min-width:0}.course-card-head>span{font-size:10px}.course-card h3{font-family:inherit;font-size:22px;margin:12px 0 8px}.course-card h3 span{font-size:13px}.course-book-info>p{margin:0 0 16px;line-height:1.8;color:var(--muted);font-size:14px}.course-book-info>button,.course-book-info>.course-external-link{display:inline-flex;justify-content:center;align-items:center;gap:24px;border:1px solid var(--gold-deep);border-radius:22px;color:#fff;background:var(--gold-deep);min-height:40px;padding:8px 20px;font-size:13px;text-decoration:none;cursor:pointer}.course-card-kaoyan .course-book-info>button,.course-card-cet .course-book-info>button{background:var(--card);color:var(--muted);border-color:var(--line)}.course-owned-list>button{background:var(--card);box-shadow:none}.course-dialog h2{color:var(--fg)}.course-ielts-bookshelf{max-width:940px;margin:0 auto}.course-shelf-intro{display:flex;align-items:baseline;flex-wrap:wrap;gap:6px 14px;padding:0}.course-shelf-intro h1{font-size:34px;line-height:1.35;margin:0}.course-shelf-intro>p:last-child{margin:0;font-size:13px;color:var(--muted)}.course-ielts-bookshelf .course-section-head{margin:20px 0 12px}.course-continue-panel{display:flex;gap:24px;align-items:center;justify-content:space-between;padding:26px;background:var(--card);border:1px solid var(--line);border-radius:12px;margin:12px 0 20px}.course-continue-panel h2{margin:0 0 12px;font-size:20px}.course-continue-panel p{color:var(--muted);font-size:13px;line-height:1.8}.course-continue-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.course-continue-actions button,.course-part-row button{border:0;border-radius:22px;background:var(--gold-deep);color:#fff;padding:11px 20px;min-height:44px;cursor:pointer}.course-continue-actions button+button{background:var(--bg2);color:var(--gold-deep)}.course-small-stats{display:flex;gap:22px;flex-shrink:0}.course-small-stats span{display:flex;flex-direction:column;gap:6px;font-size:11px;color:var(--muted);text-align:center}.course-small-stats b{font-size:25px;color:var(--fg)}.course-part-list{display:grid;gap:16px}.course-part-row{display:grid;grid-template-columns:116px minmax(0,1fr);align-items:start;gap:24px;padding:24px;background:var(--card);border:1px solid var(--line);border-radius:12px}.course-part-row>img{width:116px;height:158px;object-fit:cover;border-radius:7px}.course-part-row small{color:var(--gold-deep);font-size:11px}.course-part-row h3{margin:10px 0;font-size:21px}.course-part-row p{font-size:14px;color:var(--muted);line-height:1.8;margin:0 0 10px}.course-part-row div>span{display:block;font-size:11px;color:var(--muted);margin-bottom:14px}.shared-reader-body .story-hero{height:auto;min-height:0;margin:0 0 16px;padding:20px 24px;background:var(--card);border:1px solid var(--line);border-radius:12px;display:block}.shared-reader-body .story-hero:after,.shared-reader-body .story-hero-cover{display:none}.shared-reader-body .story-hero-meta{position:static;padding:0;background:none}.shared-reader-body .story-title{color:var(--fg);font-size:23px;line-height:1.5}.shared-reader-body .story-part-no,.shared-reader-body .story-count,.shared-reader-body .story-ch{color:var(--muted)}.shared-reader-body .reader-toolbar{position:static;background:var(--card);border:1px solid var(--line);box-shadow:none}.shared-reader-body .audio-section{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;margin:10px 0 16px}.shared-reader-body .audio-section-title{font-size:11px;margin:0}.shared-reader-body .mode-hint{font-size:12px;color:var(--muted);line-height:1.8}.course-part-row :focus-visible,.course-continue-panel :focus-visible,.course-reader-frame :focus-visible{outline:2px solid var(--gold-deep);outline-offset:3px}@media (max-width:899px){.course-continue-panel{flex-direction:column;align-items:stretch}.course-small-stats{justify-content:space-around;padding-top:16px;border-top:1px solid var(--line)}}@media (max-width:600px){.app{padding:0 14px 60px}.course-portal{padding:0 18px}.course-intro{padding:28px 0 18px}.course-intro h1{font-size:26px}.course-intro h1 br{display:block}.course-intro>p:not(.course-eyebrow){font-size:13px}.course-category-tabs{gap:4px;justify-content:space-between;padding-bottom:16px}.course-category-tabs button{padding:8px 10px;font-size:12px}.course-card{grid-template-columns:78px minmax(0,1fr);padding:18px 14px;gap:14px}.course-book-cover{width:78px;height:110px}.course-book-cover>div{padding:12px 6px;border-left-width:4px}.course-book-cover small{font-size:7px}.course-book-cover strong{font-size:20px}.course-book-cover span{font-size:7px}.course-card-head>span{display:none}.course-card h3{font-size:19px}.course-card h3 span{margin-left:6px;font-size:11px}.course-book-info>p{font-size:12px;margin-bottom:12px;line-height:1.7}.course-book-info>button,.course-book-info>.course-external-link{min-height:42px;padding:9px 14px;gap:12px;font-size:12px}.course-shelf-intro h1{font-size:28px}.course-continue-panel{padding:20px}.course-part-row{grid-template-columns:82px minmax(0,1fr);gap:16px;padding:18px 14px}.course-part-row>img{width:82px;height:114px}.course-part-row h3{font-size:19px}.course-part-row p{font-size:12px}.course-part-row button{padding:9px 16px;font-size:12px}.shared-reader-body .story-hero{padding:18px}.shared-reader-body .story-title{font-size:20px}.shared-reader-body .audio-section{display:block}}.auth-preview-page{--auth-ink:#263347;--auth-muted:#64748b;--auth-paper:#fff;--auth-wine:#2264aa;--auth-wine-dark:#1b568f;background:#f7f8fa}.auth-preview-shell{display:block;width:min(520px,calc(100% - 32px));min-height:0;margin:70px auto 32px;border:1px solid #dce4ee;border-radius:16px;box-shadow:0 8px 30px rgba(32,57,88,.04)}.auth-preview-story{min-height:0;padding:24px 28px;color:#263347;background:#fff;border-bottom:1px solid #dce4ee}.auth-preview-story>img,.auth-preview-story-shade,.auth-preview-story:after,.auth-preview-story-copy,.auth-preview-edition{display:none}.auth-preview-brand{position:static}.auth-preview-brand b{font-family:inherit;letter-spacing:0}.auth-preview-brand small{color:#64748b}.auth-preview-account{min-height:0;padding:28px;background:#fff}.auth-preview-account-head h2{font-family:inherit;font-size:28px}.auth-preview-tabs{background:#edf2f8;border-color:#dce4ee}.auth-preview-tabs button{color:#64748b}.auth-preview-tabs button.is-active{background:#fff;box-shadow:none}.auth-field input{background:#fff;border-color:#dce4ee}.auth-field input:focus-visible{background:#fff;border-color:#3279c7}.auth-preview-submit{border:0;background:#2264aa;box-shadow:none;font-family:inherit}.auth-preview-submit b{background:rgba(255,255,255,.15);color:#fff}.auth-preview-sync{border-color:#dce4ee}.auth-preview-sync b,.auth-preview-sync>span{color:#64748b}.course-auth-back{top:12px;left:max(20px,calc(50% - 260px))}@media (max-width:600px){.auth-preview-account{padding:24px 20px}.auth-preview-story{padding:20px}}.story-library{--library-paper:#fffaf6;--library-ink:#49372e;--library-accent:#b45e70;--library-gold:#c19a63;--library-line:#eadfd5;--library-muted:#89766b;max-width:none;min-height:100vh;padding:0 max(32px,calc((100% - 1180px)/2));background:var(--library-paper);color:var(--library-ink)}.story-library .course-header{min-height:94px;border-color:var(--library-line)}.story-library .course-brand{gap:13px;color:var(--library-ink)}.story-library .course-brand>span:first-child{display:grid;place-items:center;width:42px;height:48px;padding:0;background:var(--library-accent);border-radius:3px 10px 10px 3px;color:#fff;font-size:25px;box-shadow:inset 4px 0 rgba(255,255,255,.133)}.story-library .course-brand>.library-brand-name{display:flex;flex-direction:column;gap:5px;padding:0;background:none;color:var(--library-ink);font-family:inherit;font-size:17px}.library-brand-name small{font-family:Georgia,serif;font-size:8px;font-weight:400;letter-spacing:.16em;color:var(--library-muted)}.story-library .course-header button{color:var(--library-ink);font-size:13px;border:1px solid var(--library-line);border-radius:24px;padding:0 18px}.story-library .course-intro{display:flex;align-items:center;justify-content:space-between;gap:30px;text-align:left;padding:45px 0 44px}.story-library .course-eyebrow{color:var(--library-muted);font-size:11px;letter-spacing:.16em;margin:0 0 19px}.story-library .course-intro h1{font-family:Songti SC,STSong,SimSun,serif;font-size:clamp(38px,4.3vw,58px);line-height:1.3;font-weight:700;letter-spacing:-.025em;margin:0}.story-library .course-intro h1 br{display:initial}.story-library .course-intro h1 span{color:var(--library-accent)}.library-intro-aside{padding-left:28px;border-left:1px solid var(--library-line);min-width:250px}.library-intro-aside>p{font-size:16px;line-height:1.8;margin:0;color:var(--library-muted)}.story-library .course-reading-line{justify-content:flex-start;margin-top:20px;gap:10px;color:var(--library-ink);font-size:11px}.story-library .course-reading-line i{color:var(--library-accent)}.library-catalog-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:0 0 24px;border-top:1px solid var(--library-line)}.story-library .course-section-head{margin:22px 0 0;gap:12px;align-items:center}.story-library .course-section-head h2{font-size:20px;color:var(--library-ink);font-family:Songti SC,STSong,serif}.story-library .course-section-head>span{color:var(--library-muted);font-size:11px}.story-library .course-category-tabs{justify-content:flex-end;gap:4px;flex-wrap:nowrap;padding:18px 0 0}.story-library .course-category-tabs button{font-size:12px;padding:7px 15px;min-height:40px;color:var(--library-muted)}.story-library .course-category-tabs button[aria-pressed=true]{background:var(--library-ink);color:#fff}.story-library .course-category-tabs button:hover{border-color:var(--library-accent)}.story-library .course-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:28px;align-items:start}.story-library .course-card{display:block;border:0;border-radius:0;padding:0;overflow:visible;background:transparent;box-shadow:none;min-width:0}.story-library .library-cover-link{display:block;width:100%;margin:0;padding:0;border:0;border-radius:4px 10px 10px 4px;background:transparent;text-align:left;cursor:pointer;min-height:0}.story-library .course-book-cover{display:block;position:relative;isolation:isolate;aspect-ratio:3/4;width:100%;height:auto;overflow:hidden;align-self:auto;border-radius:4px 10px 10px 4px;background:var(--library-line);box-shadow:0 12px 24px -12px rgba(73,55,46,.4),2px 2px #c8bed7;transition:transform .22s ease,box-shadow .22s ease}.story-library .course-book-cover:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;background:linear-gradient(90deg,#0003,transparent 2%,#fff2 3%,transparent 5%,transparent 97%,#0002);border:1px solid #ffffff22;border-radius:inherit}.story-library .course-book-cover>img{display:block;width:100%;height:100%;object-fit:cover;position:absolute;top:0;right:0;bottom:0;left:0}.story-library .library-cover-link:hover .course-book-cover{transform:translateY(-5px) rotate(-.5deg);box-shadow:0 18px 26px -12px rgba(73,55,46,.467)}.story-library .course-book-info{padding:20px 0 0}.library-book-title{display:flex;align-items:center;justify-content:space-between;gap:6px}.story-library .course-card h3{font-family:inherit;font-size:21px;line-height:1.5;margin:0;color:var(--library-ink);white-space:nowrap}.story-library .course-card h3 span{font-size:11px;margin-left:7px;color:var(--library-muted)}.library-status{color:#4f7567;font-size:10px;white-space:nowrap;display:flex;align-items:center;gap:4px}.library-status:before{content:"";width:4px;height:4px;border-radius:50%;background:currentColor}.library-status.is-upcoming{color:#84768f}.story-library .course-book-info>p{font-size:12px;line-height:1.85;color:var(--library-muted);margin:10px 0 16px;min-height:66px}.story-library .course-book-info>button,.story-library .course-book-info>.course-external-link{display:flex;justify-content:space-between;gap:8px;width:100%;border:1px solid var(--library-line);color:var(--library-ink);background:transparent;min-height:44px;padding:10px 14px;border-radius:7px;font-size:12px}.story-library .course-card-ielts .course-book-info>button{background:var(--library-ink);border-color:var(--library-ink);color:#fff}.story-library .course-book-info>button:hover,.story-library .course-book-info>.course-external-link:hover{border-color:var(--library-accent)}.story-library .course-owned{margin:0 0 26px}.story-library .course-owned .course-section-head{margin:0 0 12px}.story-library .course-owned-list>button{background:rgba(255,255,255,.533);border-color:var(--library-line);padding:16px 20px;border-radius:8px;flex-basis:240px}.story-library .course-owned-list strong{font-size:16px;color:var(--library-ink)}.story-library .course-owned-list small{margin-bottom:4px;color:var(--library-muted)}.story-library .course-owned-list b{color:var(--library-accent)}.story-library .course-footnote{display:flex;gap:10px;margin:30px 0 36px;color:var(--library-muted);font-size:11px;line-height:1.9}.story-library .course-footnote>span{color:var(--library-accent)}.story-library footer{border-color:var(--library-line);padding:24px 0 30px;color:var(--library-muted);font-size:10px}.story-library :focus-visible{outline:2px solid var(--library-accent);outline-offset:5px}@media (max-width:1100px){.story-library .course-grid{gap:22px}.library-catalog-bar .course-section-head>span{display:none}.story-library .course-card h3{font-size:19px}.library-status{font-size:9px}.story-library .course-card h3 span{font-size:10px;margin-left:5px}}@media (max-width:760px){.story-library{padding:0 22px}.story-library .course-intro{padding:32px 0}.library-intro-aside{display:none}.story-library .course-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px 22px}.story-library .course-book-info>p{min-height:44px}.story-library .library-cover-type strong{font-size:42px}.library-catalog-bar{display:block}.story-library .course-category-tabs{justify-content:flex-start;padding-top:14px}.story-library .course-category-tabs button{flex:1;padding:6px 9px}}@media (max-width:430px){.story-library{padding:0 18px}.story-library .course-header{min-height:78px}.story-library .course-brand{gap:9px}.story-library .course-brand>.library-brand-name{font-size:14px}.library-brand-name small{font-size:6px}.story-library .course-header button{font-size:11px;padding:0 11px}.story-library .course-brand>span:first-child{width:33px;height:40px;font-size:22px}.story-library .course-intro h1{font-size:37px;line-height:1.35}.story-library .course-eyebrow{font-size:10px;margin-bottom:14px}.story-library .course-grid{gap:28px 18px}.story-library .library-cover-type{padding:16px 8px}.story-library .library-cover-type strong{font-size:32px;margin:6px 0}.story-library .library-cover-type small{font-size:7px}.story-library .library-cover-type em{font-size:7px;letter-spacing:.12em}.story-library .library-cover-bottom{font-size:6px;bottom:10px}.story-library .course-card h3{font-size:18px}.story-library .course-card h3 span{font-size:10px;margin-left:4px}.story-library .course-book-info{padding-top:16px}.story-library .course-book-info>p{font-size:11px;min-height:61px;line-height:1.8}.story-library .course-section-head h2{font-size:19px}.story-library .course-footnote{font-size:10px}.story-library footer{flex-direction:column;gap:8px}}@media (prefers-reduced-motion:reduce){.story-library .course-book-cover{transition:none}.story-library .library-cover-link:hover .course-book-cover{transform:none}}.auth-account-hint{color:var(--auth-muted);font-size:12px;line-height:1.65;margin:12px 0}.course-part-meta{display:flex;align-items:center;flex-wrap:wrap;gap:4px 12px}.course-part-meta small{white-space:nowrap;font-size:12px}.course-part-row h3{margin:8px 0}.course-part-row p{line-height:1.65;margin-bottom:12px}@media (max-width:700px){.course-part-row{gap:14px;padding:16px 14px}.course-part-meta{gap:4px 8px}.course-part-meta small{font-size:10px}.course-part-row p{font-size:13px}.course-part-row button{padding:8px 14px;border-radius:12px}}[data-course-theme=portal]{--bg:#fffaf6;--bg2:#f4e9e4;--fg:#49372e;--muted:#78665c;--gold:#b45e70;--gold-deep:#93475b;--gold-soft:#f5e4e8;--gold-line:#eadfd5;--line:#eadfd5;--card:#fffdfb;--card2:#f9eeea;--word:#93475b;--word-zh:#78665c;--theme-rgb:147,71,91;--shadow:0 2px 10px rgba(147,71,91,.06);--shadow-lg:0 8px 26px rgba(147,71,91,.12)}[data-course-theme=ielts]{--bg: #fbf5ec;--bg2: #f5ead9;--fg: #3b2a1d;--muted: #8a6f57;--gold: #b8863b;--gold-deep: #96632a;--gold-soft: rgba(184, 134, 59, .12);--gold-line: rgba(184, 134, 59, .38);--card: #fffdf9;--card2: #f7eddf;--line: #e8d7c1;--word: #a06a22;--word-zh: #96744a;--ok: #4f9e73;--bad: #c2606f;--radius: 16px;--shadow: 0 2px 10px rgba(120, 90, 50, .08);--shadow-lg: 0 6px 22px rgba(120, 90, 50, .14);--theme-rgb:184,134,59}[data-course-theme=kaoyan]{--bg:#f0f7fd;--bg2:#deecf8;--fg:#243e56;--muted:#586f83;--gold:#4786bb;--gold-deep:#286197;--gold-soft:#e2eff9;--gold-line:#c7ddec;--line:#c7ddec;--card:#fcfeff;--card2:#eaf4fc;--word:#286197;--word-zh:#586f83;--theme-rgb:40,97,151;--shadow:0 2px 10px rgba(40,97,151,.06);--shadow-lg:0 8px 26px rgba(40,97,151,.12)}[data-course-theme=cet]{--bg:#fff4ea;--bg2:#ffe5cd;--fg:#4c3326;--muted:#80614f;--gold:#cf8449;--gold-deep:#a35423;--gold-soft:#ffead7;--gold-line:#efd2b6;--line:#efd2b6;--card:#fffcf8;--card2:#fff0e2;--word:#a35423;--word-zh:#80614f;--theme-rgb:163,84,35;--shadow:0 2px 10px rgba(163,84,35,.06);--shadow-lg:0 8px 26px rgba(163,84,35,.12)}[data-course-theme=gaokao]{--bg:#fff5f8;--bg2:#ffeef3;--fg:#4a2a35;--muted:#876071;--gold:#df7195;--gold-deep:#ae3f68;--gold-soft:#ffe4ec;--gold-line:#f2cbd9;--line:#f2cbd9;--card:#fffafd;--card2:#fff0f5;--word:#ae3f68;--word-zh:#876071;--theme-rgb:174,63,104;--shadow:0 2px 10px rgba(174,63,104,.06);--shadow-lg:0 8px 26px rgba(174,63,104,.12)}html[data-course-theme]{background:var(--bg);color:var(--fg);color-scheme:light}body{background:var(--bg);color:var(--fg)}html[data-course-theme=kaoyan] body,html[data-course-theme=cet] body{background:var(--bg)}.topbar{background:var(--bg);border-color:var(--line)}.account-logout{background:var(--card);border-color:var(--line);color:var(--muted)}button,input,select,textarea{accent-color:var(--gold-deep)}button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--gold-deep);outline-offset:3px}.course-dialog{background:var(--bg);color:var(--fg);border-top:4px solid var(--gold)}.course-dialog input{background:var(--card)}.auth-loading-page{background:var(--bg);color:var(--gold-deep)}.auth-preview-page{--auth-paper:var(--card);--auth-paper-deep:var(--bg2);--auth-ink:var(--fg);--auth-muted:var(--muted);--auth-wine:var(--gold-deep);--auth-wine-dark:var(--gold-deep);--auth-gold:var(--gold);background:var(--bg)}.auth-preview-shell{border-color:var(--line);box-shadow:var(--shadow-lg)}.auth-preview-story{color:var(--fg);background:var(--card2);border-color:var(--line)}.auth-preview-brand small,.auth-preview-sync b,.auth-preview-sync>span,.auth-field-head small,.auth-preview-submit-note{color:var(--muted)}.auth-preview-account{background:var(--card)}.auth-preview-tabs{background:var(--bg2);border-color:var(--line)}.auth-preview-tabs button{color:var(--muted)}.auth-preview-tabs button.is-active{background:var(--card);color:var(--gold-deep)}.auth-field input{background:var(--card);border-color:var(--line);color:var(--fg)}.auth-field input::placeholder{color:var(--muted);opacity:.8}.auth-field input:focus-visible{background:var(--card);border-color:var(--gold)}.auth-preview-submit{background:var(--gold-deep)}.auth-preview-sync{border-color:var(--line)}.cloze-wrap .cloze-input:focus-visible{outline:2px solid var(--gold-deep);outline-offset:2px}html[data-course-theme=portal]{--bg:#f6f2fc;--fg:#352448;--gold-deep:#7351a8}.heart-library{--heart-ink:#352448;--heart-accent:#7351a8;--heart-muted:#655874;--heart-line:#ded3eb;background:#f6f2fc;color:var(--heart-ink);min-height:100vh;padding:0 max(28px,calc((100% - 1220px)/2));font-family:PingFang SC,Microsoft YaHei,sans-serif}.heart-library a{text-decoration:none;color:inherit}.heart-library button{cursor:pointer}.heart-header{display:flex;justify-content:space-between;align-items:center;min-height:120px;gap:24px}.heart-brand{display:flex;align-items:center;gap:14px;flex-shrink:0}.heart-logo{width:64px;height:64px;display:grid;place-items:center;border-radius:20px;color:#fff;font-size:48px;line-height:1;background:#7351a8;box-shadow:4px 5px #dfd2ef}.heart-brand strong{display:block;font-family:inherit;font-size:36px;font-weight:800}.heart-brand small{display:block;margin-top:6px;font-size:16px;font-weight:600;color:var(--heart-muted)}.heart-login{display:flex;align-items:center;gap:22px;font-size:17px;font-weight:700;padding:16px 22px;border:2px solid var(--heart-line);border-radius:16px;background:#fff}.heart-hero{position:relative;display:grid;grid-template-columns:1.15fr .85fr;align-items:center;gap:16px;min-height:490px;padding:44px 48px;border:2px solid #ded0ef;border-radius:32px;overflow:hidden;background:linear-gradient(115deg,#fff 3%,#f5edff 70%,#ebe1f7);box-shadow:0 12px 35px rgba(100,72,132,.04)}.heart-kicker{display:inline-flex;align-items:center;gap:10px;margin:0 0 20px;font-size:17px;font-weight:700;color:#644880}.heart-kicker>span{font-size:24px;color:#a178c3}.heart-hero h1{position:relative;z-index:1;margin:0;font-family:inherit;font-size:clamp(44px,5.5vw,76px);line-height:1.25;font-weight:800;letter-spacing:.025em}.heart-hero h1 span{color:var(--heart-accent);text-shadow:2px 3px 0 #e4d5f3}.heart-intro{margin:24px 0;color:var(--heart-muted);font-size:18px;font-weight:500;line-height:1.9}.heart-library .heart-cta{display:inline-flex;align-items:center;justify-content:space-between;gap:30px;padding:17px 25px;border-radius:16px;background:var(--heart-accent);color:#fff;font-size:19px;font-weight:800;box-shadow:0 5px #503275}.heart-hero-art{position:relative;min-height:360px}.heart-hero-book{position:absolute;width:49%;aspect-ratio:3/4;object-fit:cover;border-radius:8px 15px 15px 8px;border:3px solid white;box-shadow:0 18px 25px rgba(83,54,111,.2)}.heart-hero-book-back{left:4%;top:9%;transform:rotate(-12deg)}.heart-hero-book-front{right:4%;top:4%;transform:rotate(10deg)}.heart-art-note{position:absolute;bottom:4%;left:9%;right:0;text-align:center;padding:12px 14px;font-size:18px;font-weight:800;color:#6d4b81;background:#fff;border:2px solid #d9c8eb;border-radius:14px;transform:rotate(-3deg);box-shadow:0 5px #e3d7ef}.heart-spark{position:absolute;color:#a078c3;font-size:50px;line-height:1}.heart-spark-one{left:0;top:0}.heart-spark-two{right:0;bottom:22%;font-size:38px}.heart-catalog{scroll-margin-top:20px;margin:36px 0;padding:32px;border:2px solid var(--heart-line);border-radius:28px;background:#fff;box-shadow:0 8px 30px rgba(101,65,128,.03)}.heart-catalog-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px}.heart-catalog-heading h2{font-size:32px;font-weight:850;margin:0 0 10px;line-height:1.4}.heart-catalog-heading p{font-size:18px;line-height:1.7;margin:0;color:var(--heart-muted)}.heart-catalog-note{padding:10px 14px;background:#f6f0fb;color:#73518b;border-radius:12px;font-size:16px;font-weight:700;white-space:nowrap}.heart-tabs{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;padding:10px;border:2px solid #ded3eb;border-radius:18px;background:#f6f2fb;margin:0 0 28px}.heart-tabs button{min-height:56px;border:2px solid transparent;border-radius:12px;background:transparent;color:#5c466e;font-size:21px;font-weight:800;padding:10px 8px;white-space:nowrap}.heart-tabs button[aria-pressed=true]{color:#fff;background:var(--heart-accent);box-shadow:0 3px #503275}.heart-tabs button:hover:not([aria-pressed=true]){background:#fff;border-color:#d2bfdf}.heart-book-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}.heart-book-card{--book-color:#846187;--book-soft:#faf5fd;min-width:0;border:2px solid var(--heart-line);border-radius:19px;overflow:hidden;background:#fff;transition:transform .18s ease,box-shadow .18s ease}.heart-book-gaokao{--book-color:#a63f67;--book-soft:#fff0f5}.heart-book-ielts{--book-color:#8a602d;--book-soft:#fbf2e4}.heart-book-kaoyan{--book-color:#376a9a;--book-soft:#eef6fe}.heart-book-cet{--book-color:#a35728;--book-soft:#fff1e4}.heart-book-card:hover{transform:translateY(-4px);box-shadow:0 12px 25px rgba(89,66,104,.1)}.heart-cover-link{display:block;position:relative;overflow:hidden;aspect-ratio:3/4;background:var(--book-soft)}.heart-cover-link img{display:block;width:100%;height:100%;object-fit:cover}.heart-book-copy{padding:20px 16px 16px}.heart-book-copy h3{font-size:27px;font-weight:850;line-height:1.4;margin:0;color:var(--heart-ink)}.heart-book-copy h3 span{display:block;margin-top:2px;font-size:16px;font-weight:650;color:var(--heart-muted)}.heart-book-copy p{min-height:112px;margin:14px 0;font-size:16px;line-height:1.75;color:var(--heart-muted)}.heart-library .heart-book-enter{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:13px 14px;min-height:50px;border:1px solid var(--heart-line);border-radius:12px;background:var(--book-soft);color:var(--book-color);font-size:18px;font-weight:800}.heart-account-note{display:flex;align-items:center;gap:18px;padding:22px 24px;background:#f7f3fc;border:1px solid var(--heart-line);border-radius:16px;margin-top:28px}.heart-account-note>span{font-size:38px;color:var(--heart-accent)}.heart-account-note p{margin:0;color:var(--heart-muted);font-size:16px;line-height:1.8}.heart-account-note strong{font-size:18px;color:var(--heart-ink)}.heart-footer{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:18px;padding:4px 6px 36px;font-size:16px;color:var(--heart-muted)}.heart-footer strong{font-size:24px;font-family:inherit;font-weight:800;color:var(--heart-accent)}.heart-footer a{font-weight:750}.heart-library :focus-visible{outline:3px solid #7351a8;outline-offset:4px}.auth-course-notice{color:var(--muted);background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:14px;line-height:1.8;font-size:15px}@media (max-width:1000px){.heart-hero{padding:34px;min-height:430px}.heart-hero-art{min-height:300px}.heart-hero-book{top:15%}.heart-book-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.heart-book-copy p{min-height:84px}.heart-catalog-note{display:none}}@media (max-width:700px){.heart-library{padding:0 18px}.heart-header{min-height:108px;gap:12px}.heart-brand{gap:10px}.heart-logo{width:48px;height:48px;font-size:38px;border-radius:15px}.heart-brand strong{font-size:28px}.heart-brand small{font-size:14px}.heart-login{padding:12px;font-size:15px;gap:8px;max-width:150px;text-align:center}.heart-login span{display:none}.heart-hero{grid-template-columns:1fr;padding:28px 24px 24px;border-radius:24px;gap:20px}.heart-kicker{font-size:15px;margin-bottom:18px;gap:7px}.heart-kicker>span{font-size:20px}.heart-hero h1{font-size:clamp(40px,8.7vw,58px)}.heart-intro{font-size:16px;margin:20px 0}.heart-library .heart-cta{font-size:17px;min-height:52px;padding:14px 18px}.heart-hero-art{display:none}.heart-catalog{padding:22px 16px;margin:24px 0;border-radius:22px}.heart-catalog-heading{margin-bottom:20px}.heart-catalog-heading h2{font-size:25px}.heart-catalog-heading p{font-size:16px}.heart-tabs{gap:4px;padding:6px;margin-bottom:22px;border-radius:14px}.heart-tabs button{font-size:17px;min-height:48px;padding:8px 2px;border-radius:9px}.heart-book-grid{gap:14px}.heart-book-card{border-radius:14px}.heart-book-copy{padding:14px 10px 10px}.heart-book-copy h3{font-size:23px}.heart-book-copy h3 span{font-size:15px}.heart-book-copy p{font-size:15px;line-height:1.7;min-height:128px;margin:10px 0}.heart-library .heart-book-enter{padding:10px;font-size:16px;min-height:46px;border-radius:9px}.heart-account-note{padding:16px;gap:10px}.heart-account-note>span{display:none}.heart-account-note p{font-size:15px}.heart-account-note strong{font-size:17px}.heart-footer{font-size:15px;gap:12px}.heart-footer>span{flex-basis:100%;order:3}}@media (prefers-reduced-motion:reduce){.heart-book-card{transition:none}}@media (max-width:700px){.heart-library{padding-left:12px;padding-right:12px}.heart-catalog{padding:20px 12px}.heart-book-grid{grid-template-columns:minmax(0,1fr);gap:16px}.heart-book-card{display:grid;grid-template-columns:42% minmax(0,1fr);align-items:center}.heart-cover-link{aspect-ratio:auto;align-self:stretch;display:flex;align-items:center}.heart-cover-link img{height:auto;object-fit:contain}.heart-book-copy{padding:14px 12px;min-width:0}.heart-book-copy h3{font-size:24px;line-height:1.3}.heart-book-copy h3 span{display:inline-block;margin-left:7px;font-size:13px}.heart-book-copy p{min-height:0;margin:10px 0 12px;font-size:15px;line-height:1.65}.heart-library .heart-book-enter{min-height:44px;padding:9px 10px;font-size:16px}}.heart-copy-label{display:block;margin-bottom:8px;font-size:14px;line-height:1.5;font-weight:750;color:var(--book-color)}@media (max-width:700px){.heart-copy-label{display:block;margin-bottom:7px;font-size:12px;font-weight:750;color:var(--book-color)}}body.shared-reader-page{overflow-x:visible}.topbar.course-topbar{display:flex;flex-wrap:wrap;gap:8px 14px;background:var(--bg)}.course-topbar .course-back-button{flex:1 1 220px;min-width:0;max-width:100%;min-height:48px;display:flex;align-items:center;gap:10px;padding:8px 10px 8px 0;border:1px solid transparent;border-radius:10px;background:none;text-align:left;font-family:inherit;font-size:15px;font-weight:800;cursor:pointer}.course-back-arrow{flex:none;width:28px;text-align:center;font-size:25px;line-height:1}.course-back-title{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.course-back-button:active{background:var(--bg2,var(--card))}.course-back-button:focus-visible{outline:2px solid currentColor;outline-offset:2px}.course-topbar .topbar-tools{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:8px;min-width:0;max-width:100%;margin-left:auto}.course-topbar .topbar-tools .topbar-syllabus{width:auto;max-width:100%;text-align:left}@media (max-width:767px){.app:not(.reader-app)>.topbar.course-topbar{flex-wrap:nowrap;gap:4px;min-height:52px;padding:4px 0;margin-bottom:8px}.app:not(.reader-app)>.course-topbar .course-back-button{flex:0 1 auto;max-width:100px;min-height:44px;gap:3px;padding:4px 0;font-size:13px}.app:not(.reader-app)>.course-topbar .course-back-arrow{width:18px;font-size:22px}.app:not(.reader-app)>.course-topbar .course-back-title-full{display:none}.app:not(.reader-app)>.course-topbar .course-back-title-short{display:inline}.app:not(.reader-app)>.course-topbar .topbar-tools{flex-wrap:nowrap;gap:4px}.app:not(.reader-app)>.course-topbar .topbar-tools>button{min-height:36px;padding:6px;font-size:12px;white-space:nowrap}.app:not(.reader-app)>.course-topbar .accent-toggle{gap:2px;padding:2px}.app:not(.reader-app)>.course-topbar .accent-label,.app:not(.reader-app)>.course-topbar .accent-icon{display:none}.app:not(.reader-app)>.course-topbar .accent-toggle button{padding:6px;font-size:12px;white-space:nowrap}}.app.reader-app{width:100%;max-width:none;padding-left:24px;padding-right:24px}.shared-reader>.story-hero{margin:0 0 14px;border-radius:16px}.shared-reader>.story-hero.ielts-long-hero{height:auto;min-height:0;display:block}.shared-reader>.story-hero.ielts-long-hero:before{content:"";display:block;padding-top:48.125%}.shared-reader>.ielts-long-hero .story-hero-cover{position:absolute;top:0;right:0;bottom:0;left:0;display:block;width:100%;height:100%;object-fit:cover;object-position:50% 40%;opacity:1}.shared-reader>.ielts-long-hero .story-hero-meta{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(180deg,transparent,rgba(26,22,18,.55));text-shadow:0 1px 3px #0009}.shared-reader-toolbar.reader-toolbar{position:-webkit-sticky;position:sticky;top:var(--reader-toolbar-top,120px);z-index:19;display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:0 0 18px;padding:10px 12px;background:var(--card);border:1px solid var(--line);border-radius:12px}.shared-reader>.word-repeat-global,.shared-reader-layout,.shared-reader-toolbar.reader-toolbar{scroll-margin-top:var(--reader-scroll-top,200px)}.shared-reader-toolbar.reader-toolbar button{min-height:44px;padding:8px 12px;font-size:14px;white-space:nowrap}.shared-reader-toolbar .shared-reader-toggle{order:0;color:var(--reader-accent);border-color:var(--reader-accent);background:var(--card);cursor:pointer}.shared-reader-toolbar .reader-directory-trigger{order:1;cursor:pointer}.shared-reader-toolbar .reader-font{order:2;margin-left:auto}.shared-word-sidebar h2 small{color:var(--muted);font-size:13px;font-weight:400;white-space:nowrap}.shared-search-status{display:flex;align-items:center;justify-content:space-between;font-size:12px;margin:8px 0}.shared-search-status button{min-height:44px;border:0;background:transparent;color:var(--reader-accent);cursor:pointer}.shared-reader-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:22px;align-items:start}.shared-reader-body{min-width:0}.shared-reader-body>.story{width:100%;max-width:none;margin:0}.shared-word-sidebar{min-height:0;display:flex;flex-direction:column;overflow:hidden;padding:0;border:1px solid var(--line);border-radius:12px;background:var(--card)}.shared-word-sidebar-head{flex:none;padding:14px 14px 10px;border-bottom:1px solid var(--line);background:var(--card)}.shared-word-sidebar h2{margin:4px 0 12px;font-size:18px}.shared-word-sidebar input{width:100%;min-height:46px;padding:10px;border:1px solid var(--line);border-radius:8px;font-size:16px;background:var(--card);color:var(--fg)}.shared-word-list{flex:1;min-height:0;overflow-y:auto;overscroll-behavior-y:contain;-webkit-overflow-scrolling:touch;padding:0 14px 14px}.shared-word-empty{margin:18px 2px;color:var(--muted);font-size:14px;line-height:1.7}.shared-side-word{padding:16px 2px;border-top:1px solid var(--line);margin-top:10px}.shared-side-word>div{display:flex;justify-content:space-between;align-items:center;gap:8px}.shared-side-word h3{min-width:0;flex:1;margin:0;font-size:20px;overflow-wrap:anywhere}.shared-side-word small{display:block;overflow-wrap:anywhere;line-height:1.5;color:var(--muted);font-size:12px}.shared-side-word p{font-size:14px;line-height:1.7;margin:8px 0}.shared-side-word em{color:var(--reader-accent)}.shared-side-word button{flex-shrink:0;min-height:44px;min-width:44px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--reader-accent);cursor:pointer}.shared-side-word .shared-word-play{width:48px;height:48px;display:inline-flex;align-items:center;justify-content:center;padding:8px;border-color:var(--reader-accent);background:var(--bg2,var(--card))}.word-audio-icon{display:block;width:28px;height:28px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}.shared-side-word .shared-side-save{padding:8px;font-size:12px}.shared-side-save[aria-pressed=true]{color:var(--ok, #368168)}.shared-reader .tabs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;padding:0;background:none;border-radius:0}.shared-reader .tabs button{min-height:48px;padding:10px 8px;border:1.5px solid var(--line);border-radius:12px;background:var(--card);color:var(--fg);font-size:15px;font-weight:700;line-height:1.4;box-shadow:none;cursor:pointer}.shared-reader .tabs button.on{color:#fff;border-color:var(--reader-accent);background:var(--reader-accent);box-shadow:0 3px 8px rgba(0,0,0,.07)}.shared-reader :focus-visible{outline:2px solid var(--reader-accent);outline-offset:3px}.word-card-layer{position:fixed;top:0;right:0;bottom:0;left:0;z-index:240;display:grid;place-items:center;box-sizing:border-box;overflow:hidden;padding:18px}.word-card-backdrop{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%}.word-card-shell{position:relative;width:min(560px,100%);max-height:calc(100vh - 40px);max-height:calc(100dvh - 40px);overflow:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch}.reader-directory-layer{position:fixed;top:0;right:0;bottom:0;left:0;z-index:220;display:grid;place-items:center;padding:24px}.reader-directory-backdrop{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;border:0;background:rgba(31,23,20,.58);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);cursor:pointer}.reader-directory-dialog{position:relative;width:min(760px,100%);max-height:min(82vh,760px);display:flex;flex-direction:column;overflow:hidden;border:1px solid var(--line);border-radius:20px;background:var(--card);color:var(--fg);box-shadow:0 24px 80px rgba(35,24,20,.26)}.reader-directory-dialog>header{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 22px 16px;border-bottom:1px solid var(--line)}.reader-directory-dialog>header small{display:block;margin-bottom:4px;color:var(--reader-accent);font-size:10px;font-weight:800;letter-spacing:.16em}.reader-directory-dialog h2{margin:0;font-family:inherit;font-size:21px;line-height:1.35}.reader-directory-close{flex:none;width:44px;height:44px;border:1px solid var(--line);border-radius:50%;background:var(--card);color:var(--fg);font-size:26px;line-height:1;cursor:pointer}.reader-directory-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;padding:18px 20px 22px;overflow-y:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch}.reader-directory-item{min-width:0;min-height:76px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 12px;align-content:center;padding:13px 15px;border:1px solid var(--line);border-radius:12px;color:var(--fg);background:var(--card);text-align:left;cursor:pointer}.reader-directory-item>span{grid-column:1/-1;color:var(--reader-accent);font-size:11px;font-weight:800}.reader-directory-item>b{min-width:0;overflow:hidden;color:var(--fg);font-size:14px;line-height:1.45;text-overflow:ellipsis;white-space:nowrap}.reader-directory-item>small{align-self:center;color:var(--muted);font-size:11px;white-space:nowrap}.reader-directory-item.is-current{border-color:var(--reader-accent);background:var(--bg2,#f8f3ed);box-shadow:inset 3px 0 0 var(--reader-accent)}@media (min-width:768px){.shared-reader-layout.with-words{height:clamp(500px,calc(100vh - 176px),760px);grid-template-columns:clamp(230px,24vw,280px) minmax(0,1fr);align-items:stretch}.shared-reader-layout.with-words>.shared-word-sidebar,.shared-reader-layout.with-words>.shared-reader-body{height:100%;min-height:0}.shared-reader-layout.with-words>.shared-word-sidebar{overflow:hidden}.shared-reader-layout.with-words>.shared-reader-body{overflow-y:auto;overscroll-behavior-y:contain;-webkit-overflow-scrolling:touch}.shared-reader-layout.with-words>.shared-reader-body{padding-right:6px}.shared-reader-layout:not(.with-words){height:auto;align-items:start}.shared-reader-layout:not(.with-words)>.shared-reader-body{height:auto;overflow:visible;padding-right:0}}@media (max-width:767px){.shared-reader-layout.with-words{grid-template-columns:minmax(0,1fr)}.shared-word-sidebar{height:min(52vh,480px);max-height:min(52vh,480px);overflow:hidden}}@media (max-width:600px){.app.reader-app{padding-left:12px;padding-right:12px}.shared-reader .tabs{gap:8px}.shared-reader .tabs button{font-size:14px;padding:10px 4px}.word-card-layer{align-items:end;padding:0}.word-card-shell{width:100%;max-height:88vh;max-height:88dvh}.reader-directory-layer{align-items:end;padding:0}.reader-directory-dialog{width:100%;max-height:86vh;max-height:86dvh;border-radius:22px 22px 0 0}.reader-directory-dialog>header{padding:18px 18px 14px}.reader-directory-dialog h2{font-size:18px}.reader-directory-list{grid-template-columns:minmax(0,1fr);padding:14px 14px calc(18px + env(safe-area-inset-bottom))}.reader-directory-item{min-height:70px}}@media (min-width:768px){.legacy-ui .shared-reader-layout.with-words{display:flex;align-items:stretch;height:calc(100vh - 150px);min-height:380px;max-height:760px}.legacy-ui .shared-reader-layout.with-words>.shared-word-sidebar{flex:0 0 250px;width:250px;margin-right:18px}.legacy-ui .shared-reader-layout.with-words>.shared-reader-body{flex:1 1 0%;width:0;min-width:0}}.shared-reader .story-text{line-height:1.75}.story-paragraph-break{display:block;height:.65em;line-height:0;font-size:inherit;white-space:normal;overflow:hidden}.shared-reader .story-text .story-section-heading{margin:18px 0 8px}.course-back-title-short{display:none}@media (max-width:600px){.shared-reader .shared-reader-toolbar.reader-toolbar{padding:8px;gap:8px}.reader-app .course-back-button{flex:0 1 auto;font-size:14px;padding-right:0;gap:4px}.reader-app .course-back-title-full{display:none}.reader-app .course-back-title-short{display:inline}.reader-app .topbar.course-topbar,.reader-app .course-topbar .topbar-tools{flex-wrap:nowrap;gap:6px}.reader-app .course-topbar .topbar-tools>button{font-size:12px;padding:8px;white-space:nowrap;min-height:44px}.reader-app .course-back-arrow{width:24px}}.shared-reader .shared-reader-toolbar.reader-toolbar button{box-sizing:border-box;display:inline-flex;align-items:center;justify-content:center;height:44px;min-height:44px;border-width:1px;border-style:solid;border-radius:10px;line-height:1.2;vertical-align:middle}.reader-app .course-topbar .topbar-tools>button,.shared-reader .tabs button,.shared-reader .shared-side-word button{border-radius:10px}.shared-reader .story-hero .story-title{font-size:28px;line-height:1.4;overflow-wrap:break-word;margin:6px 0}@media (max-width:600px){.shared-reader .story-hero .story-title{font-size:22px}}html{-webkit-text-size-adjust:100%;text-size-adjust:100%}.app.reader-app,.reader-app .course-topbar,.shared-reader,.shared-reader-layout,.shared-reader-body,.shared-reader-body>.story{box-sizing:border-box;min-width:0;max-width:100%}.shared-reader-body .story-text{overflow-wrap:break-word;word-wrap:break-word}.shared-reader-body .cloze-wrap,.shared-reader-body .cloze-answer,.shared-reader-body .cloze-input{max-width:100%;min-width:0;box-sizing:border-box}.shared-reader-toolbar .word-repeat-global,.shared-reader-toolbar .reader-font{min-width:0;max-width:100%}.word-card-shell,.reader-directory-dialog{box-sizing:border-box;min-width:0;max-width:100%}@media (min-width:601px) and (max-width:900px){.shared-reader-layout.with-words{grid-template-columns:minmax(190px,28%) minmax(0,1fr)}.legacy-ui .shared-reader-layout.with-words>.shared-word-sidebar{flex-basis:28%;width:28%;min-width:190px}}.mobile-word-card-slot{display:none}@media (max-width:767px) and (orientation:portrait){.shared-reader .shared-reader-toolbar.reader-toolbar{gap:6px;padding:6px;margin-bottom:8px}.shared-reader-toolbar .shared-reader-toggle{display:inline-flex!important}.shared-reader-toolbar .mobile-word-card-slot:not(:empty){display:block;flex:0 0 100%;order:99;min-width:0}.shared-reader-toolbar .mobile-word-card-slot:empty{display:none}.mobile-word-card{overflow:hidden;animation:reader-card-open .18s ease-out both}.mobile-word-card-content{animation:reader-word-change .12s ease-out both}.shared-reader .mobile-word-card .word-card{display:grid!important;grid-template-columns:minmax(0,1fr) auto auto 44px;grid-template-rows:auto 40px;gap:2px 6px;margin:0!important;padding:8px 10px!important;border:1px solid var(--line,#e5d5c0);border-radius:10px;box-shadow:none!important;background:var(--card);min-width:0;max-width:100%;box-sizing:border-box}.mobile-word-card .word-card-head,.mobile-word-card .word-card-head>div,.mobile-word-card .word-card-pronunciation{display:contents!important}.mobile-word-card .word-card-head h2{grid-row:1;grid-column:1;margin:0!important;font-size:20px!important;line-height:1.5;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}.mobile-word-card .word-card-pronunciation>span{grid-row:1;grid-column:2/4;align-self:center;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}.mobile-word-card .word-card-close{grid-row:1;grid-column:4;width:44px!important;height:32px!important;min-height:32px!important;padding:0!important;border:0!important;background:transparent!important;font-size:24px!important}.mobile-word-card .word-card-pronunciation>button{grid-row:2;font-size:12px!important;min-height:36px!important;height:36px!important;padding:4px 6px!important}.mobile-word-card .word-card-pronunciation>button:first-of-type{grid-column:2}.mobile-word-card .word-card-pronunciation>button:last-of-type{grid-column:3}.mobile-word-card .word-card-meaning{grid-row:2;grid-column:1;min-width:0;align-self:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin:0!important;font-size:14px!important;line-height:1.5!important}.mobile-word-card .word-card-notebook{grid-row:2;grid-column:4;font-size:0!important;padding:0!important;width:44px;height:38px!important;min-height:38px!important;margin:0!important;border:1px solid var(--line)!important;border-radius:8px!important;background:var(--card)!important;color:var(--reader-accent)!important;transition:transform .14s ease}.mobile-word-card .word-card-notebook:before{content:"☆";font-size:26px;line-height:1}.mobile-word-card .word-card-notebook.on:before{content:"★"}.mobile-word-card .word-card-notebook:active{transform:scale(.9)}.mobile-word-card .word-card-count,.mobile-word-card .word-repeat-control,.mobile-word-card .word-card-context,.mobile-word-card .word-card-state,.mobile-word-card .word-card-nav{display:none!important}.shared-reader-body>.story>.tabs{position:-webkit-sticky;position:sticky;top:calc(var(--reader-scroll-top,200px) - 12px);z-index:18;background:var(--bg,#faf6ee);padding:6px 0;margin-top:0;margin-bottom:10px;gap:6px}.shared-reader-body>.story>.tabs button{min-height:42px;padding:6px 2px;font-size:13px}.shared-reader-toolbar .reader-font{margin-left:auto}.shared-reader-toolbar .reader-font button,.shared-reader-toolbar .reader-directory-trigger{padding:6px 8px!important}}@keyframes reader-card-open{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}@keyframes reader-word-change{0%{opacity:.4}to{opacity:1}}@media (prefers-reduced-motion:reduce){.mobile-word-card,.mobile-word-card-content{animation:none!important}.mobile-word-card .word-card-notebook{transition:none!important}}@media (max-width:767px) and (orientation:portrait){.shared-reader-toolbar>.vocab-audio{display:contents!important}.shared-reader-toolbar>.vocab-audio>.va-stop{order:3;font-size:0!important;width:40px;min-width:40px;padding:0!important}.shared-reader-toolbar>.vocab-audio>.va-stop:before{content:"⏹";font-size:18px}.mobile-word-card.is-closing{animation:reader-card-close .16s ease-in both}}@keyframes reader-card-close{0%{opacity:1}to{opacity:0}}@media (max-width:767px) and (orientation:portrait){.mobile-word-card .word-repeat,.mobile-word-card .word-all-meanings,.mobile-word-card .word-reading-note{display:none!important}.mobile-word-card .word-context-meaning br{display:none}.mobile-word-card .word-card-meaning{display:block;max-height:21px}.mobile-word-card .word-context-meaning{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}}@media (max-width:767px) and (orientation:portrait){.shared-reader>.story-hero{display:none!important}.mobile-word-card .word-card-head h2{font-family:inherit}}.reader-app .course-topbar .topbar-tools>.notebook-link,.reader-app.kaoyan-preview .course-topbar .topbar-tools>.topbar-syllabus{box-sizing:border-box;display:inline-flex;align-items:center;justify-content:center;gap:4px;height:44px;min-height:44px;padding:8px 12px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--fg);font-family:inherit;font-size:14px;font-weight:750;line-height:1.2;white-space:nowrap}.reader-app .course-topbar .notebook-link b{margin-left:0;border-radius:4px;background:var(--bg2,var(--card));color:var(--fg);font-size:12px}.reader-app.kaoyan-preview .course-topbar .topbar-tools>.topbar-syllabus{color:var(--pink-deep);font-weight:800}.reader-app.cet-library .course-topbar .topbar-tools>.topbar-syllabus{color:#ef7900;border-color:#ffb25b;background:#fff7eb}.reader-app .course-topbar .topbar-tools>.notebook-link.topbar-syllabus{color:var(--pink-deep);font-weight:800}.shared-reader-toolbar .reader-primary-controls{display:contents}.shared-reader-toolbar .reader-notebook-entry{order:5;margin-left:auto}.shared-reader .reader-notebook-entry>button{gap:4px;padding:8px 12px;font-family:inherit;font-size:14px;font-weight:800;color:var(--reader-accent);background:var(--card);border-color:var(--line);cursor:pointer}.shared-reader .reader-notebook-entry b{margin:0;border-radius:4px;background:var(--bg2,var(--card));color:inherit;font-size:12px}.cet-library .shared-reader .reader-notebook-entry>button{color:#ef7900;border-color:#ffb25b;background:#fff7eb}@media (min-width:768px){.shared-reader .shared-reader-toolbar.reader-toolbar{gap:6px}.shared-reader .shared-reader-toolbar.reader-toolbar button{padding-left:8px;padding-right:8px}.shared-reader .shared-reader-toolbar.reader-toolbar .vocab-audio .va-btn{padding-left:6px;padding-right:6px}}@media (max-width:767px) and (orientation:portrait){.shared-reader-toolbar .reader-primary-controls{display:contents}.shared-reader-toolbar .reader-notebook-entry{order:4;margin-left:auto}.shared-reader-toolbar.reader-toolbar .reader-font{order:5}.shared-reader .reader-notebook-entry>button{padding:6px 8px}}@media (max-width:767px){.course-reader-frame .shared-reader-toolbar .reader-font{display:none}}html.shared-reader-page,body.shared-reader-page,.shared-reader .shared-word-list,.shared-reader .shared-reader-body{scrollbar-width:none;-ms-overflow-style:none}html.shared-reader-page::-webkit-scrollbar,body.shared-reader-page::-webkit-scrollbar,.shared-reader .shared-word-list::-webkit-scrollbar,.shared-reader .shared-reader-body::-webkit-scrollbar{display:none;width:0;height:0}.reader-back-entry{display:none}@media (max-width:767px) and (orientation:portrait){.reader-app .topbar.course-topbar{display:none}.shared-reader .reader-back-entry{display:block;order:0;flex:none}.shared-reader .shared-reader-toolbar.reader-toolbar{top:0;gap:4px;padding:6px;margin:0 0 6px;background:var(--card);border:1px solid var(--line);border-radius:12px;box-shadow:none}.shared-reader .shared-reader-toolbar.reader-toolbar button:not(.word-repeat-flyout button):not(.mobile-word-card button):not(.tabs button){padding:6px;min-height:44px;height:44px;border:1px solid var(--line);border-radius:8px;background:var(--card);box-shadow:none;color:var(--reader-accent);font-size:13px}.shared-reader .reader-back-entry .course-back-button{display:flex;gap:3px;margin:0;font-family:inherit;font-weight:700;cursor:pointer;border:0!important;background:transparent!important}.reader-back-entry .course-back-arrow{width:18px;font-size:22px}.reader-back-entry .course-back-title-full{display:none}.reader-back-entry .course-back-title-short{display:inline}.shared-reader .shared-reader-toolbar .word-repeat-trigger{gap:5px}.shared-reader .shared-reader-toolbar>.vocab-audio>.va-stop{width:30px;min-width:30px}.shared-reader .shared-reader-toolbar>.vocab-audio>.va-stop:before{content:"停止";width:auto;height:auto;border:0;font-size:12px}.shared-reader .reader-notebook-entry>button{font-weight:600}.shared-reader-toolbar .mobile-word-card-slot:not(:empty){padding:2px 0}.shared-reader .shared-reader-toolbar>.tabs{order:100;flex:0 0 100%;gap:6px;padding:0;margin:0;background:transparent}.shared-reader .shared-reader-toolbar>.tabs button{height:36px;min-height:36px;padding:6px 2px;font-size:13px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--fg);font-weight:600;box-shadow:none}.shared-reader .shared-reader-toolbar>.tabs button.on{color:#fff;border-color:var(--reader-accent);background:var(--reader-accent)}.shared-reader-body>.story>.story-text{margin-top:0}}.shared-reader .word-card-pronunciation>button,.word-card-layer .word-card-pronunciation>button,.word-card-layer .word-card,.word-card-layer .word-card-context,.word-card-layer .word-card-notebook:not(.on),.shared-reader .va-btn:not(.is-selected),.shared-reader .shared-reader-toolbar .reader-directory-trigger,.shared-reader .shared-reader-toolbar .reader-notebook-entry>button{background:var(--card)}.shared-reader .cloze-btn.primary{background:var(--card);color:var(--fg);border-color:var(--line)}.shared-reader .cloze-btn{border-radius:10px}@media (max-width:767px) and (orientation:portrait){.shared-reader .shared-reader-toolbar.reader-toolbar .word-repeat-trigger{padding:6px 4px;gap:4px}.shared-reader .shared-reader-toolbar.reader-toolbar .word-repeat-pause,.shared-reader .shared-reader-toolbar.reader-toolbar>.vocab-audio>.va-stop{box-sizing:border-box;flex:none;width:44px;min-width:44px;height:44px;min-height:44px;padding:0;line-height:1;white-space:nowrap;text-align:center;border:1px solid var(--line);border-radius:8px}.shared-reader .shared-reader-toolbar.reader-toolbar .word-repeat-pause[aria-pressed=true]{background:var(--reader-accent)!important;border-color:var(--reader-accent)!important;color:#fff!important}.shared-reader .shared-reader-toolbar>.vocab-audio>.va-stop:before{display:block;white-space:nowrap;line-height:1}}@media (min-width:360px) and (max-width:767px) and (orientation:portrait){.shared-reader .reader-back-entry .course-back-button{padding:0!important;font-size:12px!important}.shared-reader .shared-reader-toolbar .reader-directory-trigger{padding:4px!important;gap:3px;font-size:12px!important}.shared-reader .shared-reader-toolbar.reader-toolbar .word-repeat-trigger{font-size:12px!important;gap:3px}.shared-reader .reader-notebook-entry>button{padding:4px!important;gap:3px;font-size:12px!important}.shared-reader .reader-notebook-entry>button b{padding:2px;font-size:11px;line-height:1}}@media (min-width:360px) and (max-width:767px) and (orientation:portrait){.shared-reader .shared-reader-toolbar.reader-toolbar{gap:3px}.shared-reader .shared-reader-toolbar.reader-toolbar .word-repeat-trigger{padding:4px!important}}@media (min-width:360px) and (max-width:767px) and (orientation:portrait){.shared-reader .reader-back-entry .course-back-button{width:44px;min-width:44px;gap:2px}.shared-reader .shared-reader-toolbar .reader-directory-trigger{width:44px;min-width:44px;padding:2px!important}.shared-reader .word-repeat-trigger .word-repeat-triangle{border-left-width:3px;border-right-width:3px}.shared-reader .reader-notebook-entry>button{padding:3px!important;gap:2px}.shared-reader .reader-notebook-entry>button b{padding:1px;font-size:10px;font-variant-numeric:tabular-nums}}.word-card .mobile-word-meaning-line{display:none}@media (max-width:767px) and (orientation:portrait){.shared-reader .mobile-word-card .word-card{grid-template-columns:minmax(0,1fr) 44px 44px;grid-template-rows:32px 36px auto;gap:0 4px;padding:6px 10px!important}.mobile-word-card .word-card-head h2{grid-row:1;grid-column:1;align-self:center;font-size:24px!important;line-height:1.15}.mobile-word-card .word-card-notebook{grid-row:1;grid-column:2;height:32px!important;min-height:32px!important}.mobile-word-card .word-card-close{grid-row:1;grid-column:3}.mobile-word-card .word-card-pronunciation>span{grid-row:2;grid-column:1;align-self:start;justify-self:start;margin-top:5px;margin-right:0;font-size:17px;line-height:1.2;font-weight:600;text-align:left}.mobile-word-card .word-card-pronunciation>button{grid-row:2;align-self:end;width:44px!important;height:30px!important;min-height:30px!important;padding:2px!important;font-size:12px!important;gap:1px}.mobile-word-card .word-card-pronunciation>button:first-of-type{grid-column:2}.mobile-word-card .word-card-pronunciation>button:last-of-type{grid-column:3}.shared-reader .mobile-word-card .word-card-meaning-full{display:none!important}.shared-reader .mobile-word-card .mobile-word-meaning-line{display:block;grid-row:3;grid-column:1/-1;max-height:none;overflow:visible;white-space:normal;color:var(--fg);font-size:17px!important;line-height:1.35!important;font-weight:400}.mobile-context-meaning{font-weight:750}.mobile-meaning-separator{color:var(--muted)}}.practice-playback-controls:empty{display:none}.reader-playback-controls{display:contents}@media (max-width:767px) and (orientation:portrait){.shared-reader .shared-reader-toolbar.reader-toolbar{gap:3px}.shared-reader-toolbar .reader-directory-trigger{order:1}.shared-reader-toolbar .shared-reader-toggle{order:2}.shared-reader .shared-reader-toolbar.reader-toolbar .reader-directory-trigger,.shared-reader .shared-reader-toolbar.reader-toolbar .shared-reader-toggle{padding:6px!important;font-size:13px}.shared-reader-toolbar .shared-reader-toggle[aria-expanded=true]{background:var(--reader-accent);color:var(--card)}.shared-reader-toolbar .word-repeat-trigger{gap:4px;padding:6px!important;font-size:13px}.shared-reader-toolbar .word-repeat-trigger b{font-size:0}.shared-reader-toolbar .word-repeat-trigger b:after{content:"跟读设置";font-size:13px}.shared-reader .reader-notebook-entry>button{padding:6px 4px!important;font-size:12px}.shared-reader-toolbar.reader-toolbar>.shared-word-sidebar{position:absolute;top:calc(100% + 6px);left:0;right:0;width:100%;box-sizing:border-box;height:66.6667vh;height:66.6667dvh;max-height:calc(100vh - var(--reader-scroll-top,120px) - 18px);max-height:calc(100dvh - var(--reader-scroll-top,120px) - 18px);z-index:6;box-shadow:0 10px 28px rgba(57,39,21,.14)}.shared-word-sidebar-head{position:relative;padding:10px 12px}.shared-word-sidebar h2{font-size:16px;margin:2px 44px 10px 0}.shared-reader .shared-word-close{position:absolute;right:6px;top:0;width:44px;border:0!important;background:transparent;font-size:24px!important;color:var(--reader-accent)}.shared-reader-layout.with-words{gap:0}.shared-reader .practice-toolbar{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:4px;padding:4px 0;margin:0 0 6px}.shared-reader .practice-head{display:contents}.shared-reader .practice-head-actions{grid-column:2;grid-row:2}.shared-reader .practice-head .practice-restart{padding:6px 8px;font-size:12px}.shared-reader .practice-auto-read-note,.shared-reader .reader-font{display:none}.shared-reader .practice-input-tools{grid-column:1;grid-row:2;justify-content:flex-start;min-width:0;margin:0;gap:6px;font-size:12px}.practice-playback-controls,.practice-playback-controls .word-repeat-toolbar{display:contents}.shared-reader .reader-playback-controls{order:5;flex:0 0 100%;display:flex;align-items:center;gap:6px;min-width:0;grid-column:1/-1;grid-row:1}.shared-reader .reader-playback-controls .vocab-audio{display:flex;flex-wrap:nowrap;align-items:center;gap:6px;margin:0}.shared-reader .reader-playback-controls .va-btn{display:inline-flex;align-items:center;justify-content:center;gap:3px;box-sizing:border-box;min-height:44px;height:44px;padding:6px 8px;font-size:13px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--reader-accent);white-space:nowrap}.shared-reader .reader-playback-controls .va-btn.is-selected{border-color:var(--reader-accent);background:var(--bg2,var(--card))}.shared-reader .reader-playback-controls .va-emoji{display:inline;font-size:16px;margin:0}.practice-playback-controls .word-repeat-trigger{grid-column:1;grid-row:1}.practice-playback-controls .va-stop{grid-column:2;grid-row:1}.practice-playback-controls .word-repeat-trigger,.practice-playback-controls .va-stop{height:44px;min-height:44px;box-sizing:border-box;display:inline-flex;align-items:center;justify-content:center;gap:4px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--reader-accent);padding:6px;font-family:inherit;font-size:12px;white-space:nowrap;cursor:pointer}.practice-playback-controls .word-repeat-trigger b{font-size:0}.practice-playback-controls .word-repeat-trigger b:after{content:"跟读设置";font-size:12px}.shared-reader .practice-playback-controls .va-stop{font-size:0;width:44px;padding:0}.practice-playback-controls .va-stop:before{content:"停止";font-size:12px}.practice-playback-controls .word-repeat-toolbar-status{grid-column:1/4;grid-row:2;max-width:none}.practice-playback-controls .word-repeat-actions{grid-column:2;grid-row:1;display:contents}.shared-reader .word-repeat.word-repeat-toolbar .word-repeat-pause{display:none}.shared-reader .practice-input-tools label{min-height:44px;gap:4px;white-space:nowrap}.shared-reader .practice-input-tools input[type=checkbox]{width:16px;height:16px;margin:0}.shared-reader .practice-input-tools .cloze-btn{min-height:44px;padding:6px 8px;font-size:12px}.shared-reader .practice-handwriting-help{display:none}.shared-reader .cloze-wrap .cloze{flex-wrap:nowrap;align-items:baseline;vertical-align:baseline}.shared-reader .cloze-wrap .cloze-answer{flex-shrink:1}.shared-reader .cloze-wrap .cloze-input{width:clamp(64px,var(--practice-width,10ch),140px)}}@media (min-width:768px){.reader-app .topbar.course-topbar{border:0}.shared-reader .shared-reader-toolbar.reader-toolbar{background:var(--bg);border:0;border-radius:0;box-shadow:none;padding:8px 0;margin-bottom:8px}.shared-reader-toolbar.reader-toolbar .reader-font{order:6;margin-left:0}.shared-reader .story-text{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:none;padding:18px 20px}.shared-reader .practice-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;padding:8px 0;margin:0 0 4px}.shared-reader .practice-head{display:contents}.shared-reader .practice-head-actions{order:2;margin-left:auto}.shared-reader .practice-input-tools{flex:0 1 auto;margin:0;gap:8px;font-size:13px}.shared-reader .practice-handwriting-help{flex:0 1 auto;margin:0;font-size:13px}.shared-reader .practice-handwriting-help[open]{flex-basis:100%}.shared-reader .practice-handwriting-help p{max-width:760px;margin:6px 0}}@media (max-width:767px) and (orientation:portrait){.shared-reader .shared-reader-toolbar.reader-toolbar{gap:4px}.shared-reader .shared-reader-toolbar.reader-toolbar .reader-back-entry,.shared-reader .shared-reader-toolbar.reader-toolbar .reader-directory-trigger,.shared-reader .shared-reader-toolbar.reader-toolbar .shared-reader-toggle,.shared-reader .shared-reader-toolbar.reader-toolbar .reader-notebook-entry{box-sizing:border-box;flex:0 0 calc((100% - 12px)/4);min-width:0;width:auto!important;margin-left:0}.shared-reader .reader-back-entry .course-back-button,.shared-reader .reader-notebook-entry>button{box-sizing:border-box;width:100%!important;min-width:0;justify-content:center}.shared-reader .reader-playback-controls{gap:4px}.shared-reader .reader-playback-controls .word-repeat-toolbar,.shared-reader .reader-playback-controls .word-repeat-actions,.shared-reader .reader-playback-controls .vocab-audio{display:contents}.shared-reader .reader-playback-controls .word-repeat-trigger,.shared-reader .reader-playback-controls .vocab-audio .va-btn{box-sizing:border-box;flex:0 0 calc((100% - 12px)/4);min-width:0;width:auto!important;justify-content:center}.shared-reader .reader-playback-controls .word-repeat-trigger{padding:4px!important}}@media (max-width:359px) and (orientation:portrait){.shared-reader .reader-playback-controls .word-repeat-trigger b:after{font-size:12px}}.auth-preview-shell{width:min(1280px,calc(100% - 64px));grid-template-columns:minmax(0,1.08fr) minmax(440px,1fr)}.auth-preview-account{padding:44px 44px 32px}.auth-preview-account-head p{font-size:16px;line-height:1.6}.auth-preview-account-head h2{font-size:40px;line-height:1.25}.auth-preview-account-head>span{font-size:17px;line-height:1.7}.auth-account-hint{margin:14px 0 0;font-size:15px;line-height:1.7}.auth-preview-tabs{margin:26px 0 24px}.auth-preview-tabs button{height:50px;font-size:18px}.auth-preview-form{gap:18px}.auth-field{gap:9px}.auth-field-head{align-items:baseline;gap:12px}.auth-field-head b{font-size:17px;line-height:1.6;flex:none}.auth-field-head small{font-size:14px;line-height:1.6;text-align:right}.auth-field input{height:56px;font-size:18px;padding:0 16px}.auth-preview-forgot{min-height:44px;font-size:16px;padding:8px 0}.auth-preview-submit{height:60px;font-size:22px;letter-spacing:.02em}.auth-preview-submit b{width:42px;height:42px;font-size:24px}.auth-preview-notice{font-size:14px;line-height:1.7}.auth-preview-sync{margin-top:24px;padding-top:22px}.auth-preview-sync>span,.auth-preview-sync b{font-size:14px;line-height:1.7}.auth-preview-brand b{font-size:24px}.auth-preview-brand small{font-size:14px;letter-spacing:.08em}.auth-preview-story-copy>p:not(.auth-preview-kicker){font-size:17px;line-height:1.8}.auth-preview-loop{font-size:15px}[data-course-theme=ielts] .auth-preview-page{--auth-paper: #fffaf2;--auth-paper-deep: #f2e2ca;--auth-ink: #49301d;--auth-muted: #806449;--auth-wine: #9b672f;--auth-wine-dark: #744820;background:radial-gradient(ellipse at 20% 10%,#dbc49b,transparent 58%),#71503b}[data-course-theme=ielts] .auth-preview-shell{display:grid;min-height:780px;margin:32px auto;border:1px solid #e4cba6;border-radius:34px;background:#fffaf2;box-shadow:0 28px 70px rgba(53,29,13,.22)}[data-course-theme=ielts] .auth-preview-story{position:relative;min-height:780px;padding:0;color:#49301d;background:#efe0c6;border:0}[data-course-theme=ielts] .auth-preview-story>img{display:block;position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;object-fit:cover;object-position:50% 36%}[data-course-theme=ielts] .auth-preview-story-shade{display:block;background:linear-gradient(180deg,rgba(42,25,12,.22),transparent 25%,transparent 52%,rgba(255,245,225,.74) 78%,#f2e2c7)}[data-course-theme=ielts] .auth-preview-story:after{display:block;border-color:rgba(255,249,229,.6)}[data-course-theme=ielts] .auth-preview-brand{display:block;position:absolute;top:32px;left:32px;padding:12px 16px;border:1px solid rgba(255,245,225,.9);border-radius:14px;color:#533519;background:rgba(255,246,227,.85)}[data-course-theme=ielts] .auth-preview-brand b{font-family:Songti SC,STSong,serif}[data-course-theme=ielts] .auth-preview-brand small{color:#806449}[data-course-theme=ielts] .auth-preview-story-copy{display:block;left:38px;right:38px;bottom:52px}[data-course-theme=ielts] .auth-preview-kicker{font-size:18px;color:#8c602b}[data-course-theme=ielts] .auth-preview-story-copy h1{font-size:48px;line-height:1.35;color:#533519;background:none;-webkit-text-fill-color:#533519;text-shadow:none}[data-course-theme=ielts] .auth-preview-story-copy>p:not(.auth-preview-kicker){color:#624326}[data-course-theme=ielts] .auth-preview-loop{border-color:#bb955e;background:rgba(255,249,235,.72);color:#684825}[data-course-theme=ielts] .auth-preview-loop i{color:#9b672f}[data-course-theme=ielts] .auth-preview-account{min-height:0;background:repeating-linear-gradient(0deg,rgba(172,129,69,.035) 0,rgba(172,129,69,.035) 1px,transparent 1px,transparent 30px),#fffaf2}[data-course-theme=ielts] .auth-preview-account-head h2{font-family:Songti SC,STSong,serif}[data-course-theme=ielts] .auth-preview-tabs{border-color:#e4d0b3;background:#f2e5d1}[data-course-theme=ielts] .auth-preview-tabs button{color:#806449}[data-course-theme=ielts] .auth-preview-tabs button.is-active{color:#9b672f;background:#fffdf8;box-shadow:0 3px 12px rgba(125,85,36,.08)}[data-course-theme=ielts] .auth-field input{background:#fffdf8;border-color:#ddc8ac;color:#49301d}[data-course-theme=ielts] .auth-field input:focus-visible{background:#fff;border-color:#b8863b}[data-course-theme=ielts] .auth-field input::placeholder{color:#917a61}[data-course-theme=ielts] .auth-preview-submit{border:1px solid #986027;background:linear-gradient(135deg,#a97635,#815124);font-family:Songti SC,STSong,serif;box-shadow:0 8px 20px rgba(131,83,31,.16)}[data-course-theme=ielts] .auth-preview-submit b{background:#e9c68a;color:#5f3a17}[data-course-theme=ielts] .auth-preview-sync{border-color:#e4d0b3}[data-course-theme=ielts] .auth-preview-sync b,[data-course-theme=ielts] .auth-preview-sync>span{color:#806449}@media (max-width: 900px){.auth-preview-page{position:absolute;bottom:auto;min-height:calc(100dvh - 49px);overflow:visible}.auth-preview-shell,[data-course-theme=ielts] .auth-preview-shell{width:100%;display:block;min-height:0;margin:0;border:0;border-radius:0;box-shadow:none}.auth-preview-story,[data-course-theme=ielts] .auth-preview-story{height:210px;min-height:0;aspect-ratio:auto}.auth-preview-account,[data-course-theme=ielts] .auth-preview-account{min-height:0;padding:28px 24px 30px}.auth-preview-story-copy,.auth-preview-brand,.auth-preview-story-shade,.auth-preview-edition,[data-course-theme=ielts] .auth-preview-story-copy,[data-course-theme=ielts] .auth-preview-brand,[data-course-theme=ielts] .auth-preview-story-shade,[data-course-theme=ielts] .auth-preview-story:after{display:none}[data-course-theme=ielts] .auth-preview-story>img{object-position:50% 22%}.auth-preview-account-head p{font-size:15px}.auth-preview-account-head h2{font-size:32px}.auth-preview-account-head>span{font-size:16px}.auth-account-hint{font-size:14px}.auth-preview-tabs{margin:20px 0}.auth-preview-tabs button{height:48px;font-size:17px}.auth-preview-form{gap:16px}.auth-field-head b{font-size:16px}.auth-field-head small{font-size:13px}.auth-field input{height:54px;font-size:16px}.auth-preview-submit{height:58px;font-size:21px}.auth-preview-notice,.auth-preview-sync>span,.auth-preview-sync b{font-size:13px}}@media (max-width: 430px){.auth-preview-account,[data-course-theme=ielts] .auth-preview-account{padding:26px 20px 28px}.auth-preview-story,[data-course-theme=ielts] .auth-preview-story{height:200px}.auth-field-head{gap:8px}}