@charset "UTF-8";
:root{--ink:#243746;--muted:#71808a;--paper:#f7f4ee;--accent:#397cad;--tint:#eaf3fb;--edge:#cbdff0;--deep:#28638f;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,select{font:inherit}button{cursor:pointer;color:inherit}button:disabled{cursor:default;opacity:.4}button,a{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,select:focus-visible{outline:3px solid #d99e22;outline-offset:4px}button{touch-action:manipulation}button svg{pointer-events:none}button{border:0}button:active:not(:disabled){transform:translateY(1px)}[hidden]{display:none!important}
.header{max-width:1220px;margin:auto;padding:25px 36px;display:flex;justify-content:space-between;align-items:center}.brand{display:flex;align-items:center;gap:12px;background:none;text-align:left;font-size:24px;font-weight:750;letter-spacing:-.8px;padding:0}.brand-sub{display:block;font-size:11px;font-weight:500;letter-spacing:2px;margin-top:3px}.brand-mark{width:47px;height:47px;display:grid;place-items:center;border:2px solid #cad9da;border-radius:16px;font-size:47px;line-height:1;font-family:Georgia,serif;color:#367c9f;position:relative;font-weight:600}.brand-mark>span{position:absolute;font:17px sans-serif;color:#d9a440;right:1px;top:-5px;background:var(--paper)}.voice-button{border:1px solid #dfded6;border-radius:30px;background:#fff9;padding:12px 18px;font-size:13px}.voice-button>span{color:#658888;font-size:17px;margin-right:5px}
#app{max-width:1220px;margin:auto;padding:25px 36px 35px;min-height:70vh}.eyebrow{font-size:11px;letter-spacing:2.4px;font-weight:650;color:#82918b}.hero{padding:20px 0 35px;position:relative}.hero h1{font-size:clamp(28px,4.6vw,46px);font-weight:700;letter-spacing:-1.5px;line-height:1.4;margin:12px 0 15px}.hero h1 .hand-underline{position:relative;white-space:nowrap;color:#547f78}.hand-underline:after{content:"";position:absolute;left:0;right:0;bottom:-7px;height:7px;border-top:3px solid #ccd5aa;border-radius:50%;transform:rotate(-2deg)}.hero p{font-size:15px;line-height:1.8;color:var(--muted);margin:0}.hero-spark{position:absolute;right:50px;top:30px;font-size:64px;font-family:Georgia,serif;color:#dec991;transform:rotate(10deg)}
.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.category-card{--category-title-size:25px;position:relative;overflow:hidden;min-height:300px;display:flex;flex-direction:column;align-items:flex-start;text-align:left;border:1px solid var(--edge);border-radius:26px;background:var(--tint);padding:30px;color:var(--deep);transition:transform .2s,box-shadow .2s}.category-card:hover{transform:translateY(-4px);box-shadow:0 10px 20px #2437460a}.category-card:after{content:"";position:absolute;right:-48px;top:-50px;width:210px;height:210px;border:1px solid var(--edge);border-radius:50%;pointer-events:none}.category-number{font-size:var(--category-title-size);font-weight:700;line-height:1.25;letter-spacing:1px;opacity:.7}.category-art{height:106px;margin:12px 0 20px;display:flex;align-items:center;font:italic 72px Georgia,serif;letter-spacing:-7px}.category-art svg{width:95px;height:84px}.category-card h2{font-size:var(--category-title-size);letter-spacing:1px;margin:0 0 9px}.category-card p{font-size:13px;color:var(--deep);opacity:.8;margin:0;line-height:1.6}.category-bottom{margin-top:22px;display:flex;justify-content:space-between;width:100%;align-items:center;font-size:12px}.category-arrow{display:grid;place-items:center;width:34px;height:34px;border:1px solid var(--edge);border-radius:50%;font-size:22px;background:#ffffff60}.theme-letter{--accent:#397cad;--tint:#eaf3fb;--edge:#cbdff0;--deep:#28638f}.theme-sentence{--accent:#b67720;--tint:#fff0d8;--edge:#efd5a8;--deep:#92601a}.theme-story{--accent:#b76883;--tint:#f9eaf0;--edge:#eccbd7;--deep:#9b4f69}
.home-note{display:flex;align-items:center;gap:12px;margin-top:28px;color:#7a858a;font-size:13px;padding:17px 3px;line-height:1.7}.home-note>span{font-size:25px;color:#b9a175}.resume{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:20px;padding:16px 22px;border:1px solid #deded4;background:#fff8;border-radius:18px}.resume p{margin:4px 0 0;font-size:13px;color:var(--muted)}.resume strong{font-size:15px}.resume button{background:#e6ede7;border-radius:25px;padding:12px 20px;color:#477567;font-weight:600;white-space:nowrap}
.section-nav{display:flex;gap:8px;margin-bottom:28px}.section-nav button{background:#fff8;padding:12px 22px;border-radius:25px;font-size:14px;color:#7f8790;border:1px solid #e4e2da}.section-nav button[aria-current="true"]{background:var(--tint);border-color:var(--edge);color:var(--deep);font-weight:650}.shelf-heading{display:flex;align-items:center;justify-content:space-between;margin:30px 0 24px}.shelf-heading h1{font-size:32px;letter-spacing:-1px;margin:8px 0}.shelf-heading p{margin:0;color:var(--muted);font-size:14px}.sheet-count{font-size:12px;letter-spacing:1px;border:1px solid var(--edge);border-radius:30px;padding:9px 15px;background:var(--tint);color:var(--deep)}.sheet-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.sheet-card{border-radius:20px;overflow:hidden;background:#fff;border:1px solid #e8e4dc;padding:0;text-align:left;transition:transform .2s,box-shadow .2s}.sheet-card:hover{transform:translateY(-3px);box-shadow:0 8px 20px #24374609}.sheet-cover{height:190px;padding:16px;display:flex;align-items:center;justify-content:center;background:var(--tint);position:relative}.sheet-cover img{max-width:100%;max-height:100%;object-fit:contain;box-shadow:0 3px 10px #23374610;border-radius:2px}.sheet-cover .letter-label{position:absolute;left:18px;top:14px;font:italic 30px Georgia,serif;color:var(--deep);background:var(--tint);padding:0 7px;border-radius:9px}.sheet-card-content{padding:18px 20px;display:flex;align-items:center;justify-content:space-between;gap:10px}.sheet-card h2{font-size:20px;margin:0 0 6px;font-weight:650}.sheet-card p{font-size:12px;color:var(--muted);margin:0}.small-arrow{color:var(--accent);font-size:24px}
.reader-heading{display:flex;align-items:center;gap:18px;justify-content:space-between;margin:0 0 17px}.back-button{background:transparent;font-size:14px;padding:10px 0;color:var(--deep);white-space:nowrap}.reader-title{font-size:23px;margin:0;text-align:center}.reader-heading .sheet-count{white-space:nowrap}.sheet-tabs{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;padding:2px 2px 13px;margin:0 0 6px}.sheet-tabs::-webkit-scrollbar{display:none}.sheet-tabs button{white-space:nowrap;background:#fff8;border:1px solid #e5e3dd;border-radius:13px;padding:10px 17px;color:#7c858c;font-size:13px}.sheet-tabs button[aria-current="true"]{background:var(--tint);border-color:var(--accent);color:var(--deep);font-weight:650}.reader-shell{background:#fff;border:1px solid #e4e3dd;border-radius:24px;padding:20px;box-shadow:0 5px 18px #28384c04}.reader-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:16px;flex-wrap:wrap}.segmented{display:inline-flex;border:1px solid var(--edge);background:var(--tint);border-radius:12px;padding:3px}.segmented button{background:transparent;border-radius:9px;padding:9px 16px;font-size:13px;color:var(--deep);white-space:nowrap}.segmented button[aria-pressed="true"]{background:#fff;box-shadow:0 2px 5px #24374609;font-weight:650}.zoom-button{background:#f4f4ef;border-radius:12px;font-size:13px;padding:12px 16px;white-space:nowrap}.reader-viewport{background:#f3f2ee;border:1px solid #eeeae3;border-radius:15px;overflow:auto;overscroll-behavior-x:contain;scrollbar-width:thin;touch-action:pan-y pinch-zoom}.page-stage{position:relative;max-width:100%;width:100%;margin:auto;line-height:0;user-select:none;-webkit-user-select:none}.page-image{display:block;width:100%;height:auto;pointer-events:none;-webkit-user-drag:none}.reader-viewport.zoomed{touch-action:pan-x pan-y pinch-zoom}.zoomed .page-stage{width:180%;max-width:none;margin:0}.hotspots{position:absolute;inset:0;pointer-events:none}.hotspot{position:absolute;padding:0;background:transparent;border:0;border-radius:5px;pointer-events:auto;line-height:1;min-height:8px;outline-offset:2px;color:transparent;touch-action:pan-y pinch-zoom}.zoomed .hotspot{touch-action:pan-x pan-y pinch-zoom}.hotspot:hover{background:var(--tint);opacity:.35;outline:1px solid var(--accent)}.hotspot.playing{background:var(--tint);opacity:.55;outline:2px solid var(--accent)}.page-loading{position:absolute;inset:0;background:#faf8f3dd;display:flex;align-items:center;justify-content:center;font-size:15px;line-height:1.4;z-index:2}.reader-caption{font-size:11px;color:#919797;text-align:center;line-height:1.6;margin:10px 0 2px}.page-nav{display:flex;align-items:center;justify-content:space-between;margin-top:16px;gap:12px}.page-nav button{border-radius:14px;padding:13px 24px;background:var(--tint);color:var(--deep);font-weight:600;font-size:14px}.page-number{color:#8b9196;font-size:13px}.page-number strong{color:var(--deep);font-size:20px;font-weight:600;margin-right:4px}.player-bar{display:flex;gap:9px;align-items:center;margin-top:20px;padding-top:18px;border-top:1px solid #eceae3;flex-wrap:wrap}.primary-button{background:var(--accent);color:white;padding:13px 20px;border-radius:14px;font-weight:600;font-size:14px}.soft-button{background:var(--tint);color:var(--deep);border:1px solid var(--edge);padding:12px 17px;border-radius:14px;font-size:13px}.stop-button{background:#f2f2ee;border-radius:14px;padding:13px 17px;font-size:13px}.play-status{font-size:12px;color:var(--muted);margin-left:auto;line-height:1.6;max-width:42%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.play-status.active{color:var(--accent)}.playing-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:currentColor;vertical-align:middle;margin-right:6px}.active .playing-dot{animation:pulse 1s infinite}
.transcript{margin-top:22px}.transcript-heading{display:flex;align-items:center;gap:9px;font-size:12px;color:#8a9395;margin:0 0 10px}.transcript-heading:after{content:"";height:1px;flex:1;background:#e3e2db}.text-units{display:flex;flex-wrap:wrap;gap:9px}.text-unit{border:1px solid #e1e2da;background:#fff9;border-radius:12px;padding:11px 15px;font-size:16px;line-height:1.6;text-align:left}.text-unit.sentence{width:100%}.text-unit:hover,.text-unit.playing{border-color:var(--accent);background:var(--tint);color:var(--deep)}.empty-page{font-size:13px;color:var(--muted);line-height:1.8;margin:0}.footer{max-width:1220px;margin:20px auto;padding:15px 36px 28px;text-align:center;font-size:11px;color:#9b9e96;letter-spacing:1px}.footer>span{color:#cdb276;margin:0 10px}.toast{position:fixed;z-index:20;bottom:28px;left:50%;transform:translateX(-50%);background:#243746;color:#fff;box-shadow:0 8px 30px #0002;padding:15px 21px;border-radius:16px;max-width:min(92vw,530px);width:max-content;font-size:14px;line-height:1.6}.loading{text-align:center;padding:90px 0;color:var(--muted);font-size:14px}.loading-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:#87b4b0;margin-right:10px;animation:pulse 1s infinite}@keyframes pulse{50%{opacity:.35}}.voice-dialog{width:min(480px,92vw);border:1px solid #deded7;border-radius:25px;background:var(--paper);padding:35px;color:var(--ink);box-shadow:0 20px 90px #0002}.voice-dialog::backdrop{background:#24374670;backdrop-filter:blur(4px)}.voice-dialog h2{font-size:25px;margin:12px 0}.voice-dialog p{font-size:13px;color:var(--muted);line-height:1.9}.dialog-close{position:absolute;right:16px;top:10px;font-size:28px;background:none;color:#8d989c;padding:5px 10px}.voice-dialog label{display:block;font-size:12px;margin:25px 0 9px;color:var(--muted)}.voice-dialog select{width:100%;padding:14px 12px;background:white;border:1px solid #d6dfdc;border-radius:12px;color:var(--ink);font-size:14px}.dialog-actions{display:flex;gap:10px;margin:17px 0}.voice-help{min-height:35px}.voice-dialog details{font-size:12px;margin-top:15px;color:#637476}.voice-dialog summary{cursor:pointer;padding:10px 0}.error-view{text-align:center;padding:80px 0}.error-view p{font-size:14px;line-height:1.8;color:var(--muted)}
@media(min-width:1100px){.reader-shell{max-width:980px;margin:auto}.reader-viewport{max-height:none}.page-stage{max-width:900px}.page-stage.portrait{max-width:620px}.zoomed .page-stage.portrait{max-width:none;width:180%}.transcript{max-width:980px;margin-left:auto;margin-right:auto}}
@media(max-width:760px){.header{padding:21px 22px}.brand{font-size:22px}.brand-mark{width:41px;height:41px;font-size:41px}.voice-button{padding:11px 13px;font-size:12px}#app{padding:12px 22px 24px}.hero{padding:18px 0 30px}.hero h1{font-size:32px}.hero-spark{right:5px;top:28px;font-size:40px}.hero p{font-size:13px}.category-grid{gap:12px}.category-card{min-height:255px;padding:22px 17px;border-radius:22px}.category-art{font-size:60px;height:80px;margin-bottom:15px}.category-art svg{width:70px}.category-card{--category-title-size:21px}.category-card p{font-size:11px}.category-bottom{font-size:11px}.sheet-grid{grid-template-columns:repeat(2,1fr);gap:14px}.sheet-cover{height:170px}.section-nav{gap:7px;margin-bottom:22px}.section-nav button{flex:1;padding:12px 10px;font-size:13px}.shelf-heading h1{font-size:27px}.sheet-card-content{padding:15px}.sheet-card h2{font-size:17px}.reader-shell{padding:14px;border-radius:20px}.reader-title{font-size:19px}.reader-heading{gap:10px}.reader-heading .sheet-count{padding:8px 11px;font-size:11px}.segmented button{padding:9px 11px}.player-bar{gap:7px}.primary-button{padding:13px 16px}.soft-button{padding:12px 13px}.play-status{max-width:100%;width:100%;margin:4px 0 0}.page-nav button{padding:13px 17px}.footer{padding:12px 22px 25px;letter-spacing:0}.home-note{font-size:12px}}
@media(max-width:480px){.hero-spark{display:none}.hero h1{font-size:29px}.sheet-cover{height:145px;padding:12px}.sheet-cover .letter-label{font-size:24px;left:9px;top:9px}.reader-toolbar{gap:7px}.reader-toolbar .segmented button{padding:9px 10px;font-size:12px}.zoom-button{padding:11px 10px;font-size:12px}.reader-heading .sheet-count{display:none}.reader-title{text-align:right}.reader-caption{font-size:10px}.page-nav button{padding:12px 13px;font-size:13px}.page-number{font-size:12px}.page-number strong{font-size:17px}.player-bar .soft-button{font-size:12px}.voice-dialog{padding:30px 25px}.text-unit{font-size:16px}.resume{padding:15px}.resume button{padding:12px 15px;font-size:13px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

@media(max-width:760px){.category-grid{grid-template-columns:1fr}.category-card{--category-title-size:22px;min-height:158px;padding:22px 24px;display:grid;grid-template-columns:65px 1fr 32px;grid-template-rows:auto 32px 25px;row-gap:5px;column-gap:12px;align-items:center}.category-card:after{width:180px;height:180px;right:-55px;top:-20px}.category-number{grid-column:2/4;grid-row:1;font-size:var(--category-title-size)}.category-art{grid-column:1;grid-row:1/4;margin:0;height:80px;font-size:66px;letter-spacing:-6px}.category-card h2{grid-column:2;grid-row:2;margin:0;font-size:var(--category-title-size)}.category-card p{grid-column:2;grid-row:3;font-size:12px}.category-bottom{grid-column:3;grid-row:1/4;margin:0;width:auto}.category-bottom>span:first-child{display:none}.category-arrow{width:32px;height:32px}}
@media(max-width:760px){.category-art svg{width:65px}.category-art{font-size:60px}}