:root{--paper:#f6f3eb;--ink:#253f36;--muted:#7d8479;--green:#365c49;--line:#e2e2d7;--orange:#cc7757;--white:#fffef9;font-family:'DM Sans','Noto Sans SC',sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,a,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit}button:disabled{cursor:default;opacity:.35}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #dd9b50;outline-offset:4px}button{border:0}a{color:inherit;text-decoration:none}svg{width:22px;height:22px;flex-shrink:0;stroke:currentColor;stroke-width:1.7;fill:none;stroke-linecap:round;stroke-linejoin:round}.shell{display:grid;grid-template-columns:230px 1fr;min-height:100dvh}.sidebar{position:fixed;inset:0 auto 0 0;width:230px;background:#efeee4;border-right:1px solid var(--line);padding:38px 24px;display:flex;flex-direction:column;z-index:5}.brand{display:flex;gap:11px;align-items:center}.brand-mark{width:43px;height:48px;border-radius:13px 13px 17px 6px;background:var(--green);color:#f5e7b7;display:grid;place-items:center;transform:rotate(-7deg)}.brand-mark svg{width:26px;height:26px}.brand strong{font-size:20px;line-height:1.2;letter-spacing:-1px}.brand small{display:block;color:var(--muted);font-size:10px;letter-spacing:2px;margin-top:6px}.side-label{font-size:10px;color:#959889;letter-spacing:2px;margin:56px 14px 15px}.nav-item{display:flex;gap:12px;align-items:center;width:100%;text-align:left;padding:15px;border-radius:13px;background:transparent;margin:4px 0;font-size:14px;color:#707a6b}.nav-item.active{background:#dfe6d6;color:var(--green);font-weight:700}.nav-item b{margin-left:auto;font-size:11px;background:#f8f8f0;border-radius:6px;padding:3px 6px}.side-bottom{margin-top:auto;background:#e6e6d6;border-radius:18px;padding:20px 16px}.side-bottom 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#dce2d1;border-radius:24px;min-height:280px;display:grid;grid-template-columns:1.05fr 1fr;overflow:hidden;position:relative}.hero-copy{padding:34px 0 33px 34px;position:relative;z-index:1}.badge{display:inline-flex;font-size:10px;gap:6px;align-items:center;letter-spacing:1px;color:#657a60;background:#f5f5e9;padding:7px 11px;border-radius:30px}.hero h2{font-size:clamp(25px,2.5vw,38px);letter-spacing:-.5px;line-height:1.45;margin:14px 0 10px;font-weight:800}.hero h2 em{font-style:normal;color:#bc704e}.hero p{font-size:12px;color:#7b8372;line-height:1.9;margin:0 0 20px}.primary{background:var(--green);color:#fffdf3;border-radius:11px;padding:13px 20px;display:inline-flex;gap:10px;align-items:center;font-weight:600;font-size:12px;min-height:46px}.primary svg{width:17px;height:17px}.hero-art{display:flex;align-items:center;justify-content:center;padding:27px 30px 27px 15px;position:relative}.hero-book{width:100%;max-width:390px;border:6px solid #fffcf2;border-radius:4px 13px 13px 4px;box-shadow:-5px 0 0 #c7d3bf,0 15px 20px #49614925;transform:rotate(-6deg);aspect-ratio:1.474;object-fit:cover}.hero-star{position:absolute;right:22px;top:13px;font-size:33px;color:#c78b49;transform:rotate(14deg)}.hero-note{position:absolute;bottom:17px;right:22px;font-size:10px;letter-spacing:1px;color:#6c7c65}.section-head{display:flex;align-items:flex-end;justify-content:space-between;margin:31px 0 20px;gap:15px}.section-head h2{font-size:20px;margin:0 0 5px}.section-head p{font-size:11px;margin:0;color:var(--muted)}.filter-row{display:flex;gap:6px;flex-wrap:wrap}.chip{background:transparent;font-size:11px;color:var(--muted);padding:9px 12px;border-radius:9px;min-height:40px}.chip.active{background:var(--green);color:white}.search-row{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:22px}.search{display:flex;align-items:center;gap:9px;border:1px solid #dfdfd4;border-radius:10px;padding:9px 12px;background:#faf9f3;width:260px}.search svg{color:#989e8e;width:16px;height:16px}.search input{width:100%;background:none;border:0;outline:none;font-size:11px;color:var(--ink)}.small-note{color:#8b9183;font-size:10px;display:flex;gap:5px;align-items:center}.small-note svg{width:14px;height:14px}.book-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:25px 24px}.book-card{display:block;text-align:left;background:none;border:0;padding:0;min-width:0;transition:transform .2s}.book-card:hover{transform:translateY(-5px)}.book-picture{position:relative;background:var(--cover);border-radius:13px;padding:16px 14px 17px 20px;overflow:hidden;aspect-ratio:1.36;display:flex;align-items:center;justify-content:center}.book-picture:before{content:'';position:absolute;inset:0 auto 0 0;width:9px;background:#00000010;border-right:1px solid #ffffff25}.book-thumb{width:100%;border:4px solid #fff9ed;border-radius:3px 9px 9px 3px;box-shadow:0 7px 13px #35482b22;transform:rotate(-3deg);object-fit:contain}.book-number{position:absolute;top:9px;left:17px;color:#ffffffd9;font-size:10px;letter-spacing:1.3px;z-index:1;background:#253f364d;border-radius:5px;padding:3px 6px}.book-done{position:absolute;right:9px;top:9px;color:#fffdf7;background:var(--green);border-radius:50%;width:24px;height:24px;display:grid;place-items:center}.book-done svg{width:14px;height:14px}.book-meta{padding:13px 2px 0}.book-meta .category{font-size:9px;letter-spacing:.4px;color:#8b8e80}.book-meta h3{font-size:16px;margin:6px 0 4px;display:flex;align-items:center;justify-content:space-between}.book-meta h3 svg{width:17px;height:17px;color:#9a9f8e}.book-meta p{font-size:11px;color:#838b7f;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.book-footer{display:flex;gap:9px;align-items:center;margin-top:11px;color:#969c8b;font-size:9px}.book-footer svg{width:12px;height:12px}.shelf-footer{margin-top:36px;padding-top:20px;border-top:1px solid var(--line);font-size:10px;color:#959a8d;display:flex;justify-content:space-between;gap:12px}.empty{padding:55px;color:var(--muted);grid-column:1/-1;text-align:center}.reader{min-height:100dvh;display:flex;flex-direction:column;background:#eeeee5}.reader-header{display:flex;align-items:center;gap:15px;padding:16px 28px;background:#faf9f2;border-bottom:1px solid var(--line)}.icon-button{width:46px;height:46px;border:1px solid var(--line);border-radius:12px;background:#fffdf6;display:grid;place-items:center;flex-shrink:0}.reader-title{flex:1;min-width:0}.reader-title h1{font-size:17px;margin:0 0 4px}.reader-title p{font-size:11px;color:var(--muted);margin:0}.reader-controls{display:flex;gap:9px;align-items:center}.rate{padding:11px 13px;min-height:44px;background:#e8ecdf;border-radius:10px;border:0}.reader-body{display:grid;grid-template-columns:minmax(0,1fr) 300px;flex:1;min-height:0;gap:24px;padding:24px;max-width:1600px;width:100%;margin:0 auto}.reading-area{min-width:0;display:flex;flex-direction:column}.page-tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:15px}.page-tabs button{padding:11px 15px;border-radius:10px;min-height:44px;font-size:12px;background:#e2e5d9;color:#7c8575}.page-tabs button.active{background:var(--green);color:#fff}.page-stage{position:relative;display:flex;flex-direction:column;justify-content:center;flex:1;border-radius:16px;background:#fffdf5;box-shadow:0 6px 25px #263e3410;border:1px solid #dedfd2;overflow:hidden;min-height:320px;touch-action:pan-y}.scene-wrap{position:relative;line-height:0}.scene-img{display:block;width:100%;height:auto}.hotspot{position:absolute;border:0;background:transparent;border-radius:15px;transition:background .2s;display:flex;align-items:flex-end;justify-content:center;padding:5px}.hotspot:hover,.hotspot:focus-visible,.hotspot.playing{background:#ffffff22;box-shadow:inset 0 0 0 3px #fff6}.hotspot .spot-sound{opacity:0;border-radius:20px;background:#365c49;color:white;padding:6px;display:grid;place-items:center}.hotspot:hover .spot-sound,.hotspot.playing .spot-sound{opacity:1}.hotspot .spot-sound svg{width:17px;height:17px}.stage-heading{padding:25px 26px 4px}.stage-heading h2{font-size:24px;margin:0 0 8px}.stage-heading p{color:var(--muted);font-size:12px;margin:0}.word-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));padding:22px;gap:13px}.word{display:flex;flex-direction:column;justify-content:center;align-items:center;gap:8px;background:#edf1e6;border:1px solid #e1e5d7;border-radius:15px;min-height:115px;padding:18px 8px;position:relative}.word:nth-child(3n+2){background:#edf0f0}.word:nth-child(3n){background:#f6eddb}.word strong{font-size:clamp(16px,2vw,25px);text-align:center}.word span{font-size:12px;color:var(--muted)}.word svg{width:17px;height:17px;color:#70927a}.word.playing,.sentence.playing{box-shadow:inset 0 0 0 3px #89a877;background:#e3ecd8}.sentence-list{padding:16px 23px 24px;display:grid;gap:12px}.sentence{width:100%;text-align:left;display:flex;gap:14px;align-items:center;background:#f1f2e9;border:1px solid #e2e5da;border-radius:13px;padding:20px;min-height:80px}.sentence .sound-disc{width:39px;height:39px;display:grid;place-items:center;background:#dfe8d6;border-radius:50%;flex-shrink:0;color:var(--green)}.sentence strong{font-size:clamp(16px,1.8vw,23px);line-height:1.5;display:block}.sentence small{display:block;margin-top:6px;color:#818875;font-size:12px}.qa-block{padding:17px 23px;border-bottom:1px dashed var(--line)}.qa-block:last-child{border:0}.qa-line{display:flex;align-items:center;gap:13px;background:none;border:0;text-align:left;min-height:56px;width:100%;padding:8px 0}.qa-line>span{font-size:12px;font-weight:700;background:#efe1c8;color:#a4744d;border-radius:9px;padding:7px 10px}.qa-line.answer>span{background:#dce7d6;color:#4d7051}.qa-line strong{font-size:17px;line-height:1.5;display:block}.qa-line small{font-size:11px;color:var(--muted);display:block;margin-top:5px}.qa-line.playing strong{color:#ba6d4f}.qa-line svg{width:18px;height:18px;margin-left:auto}.reader-aside{display:flex;flex-direction:column;gap:15px}.aside-card{background:#faf9f2;border:1px solid var(--line);border-radius:17px;padding:22px}.aside-card h3{font-size:14px;margin:0 0 13px}.aside-card p{font-size:12px;color:var(--muted);line-height:1.9;margin:0}.now-playing{min-height:78px;font-family:'DM Sans',sans-serif;font-size:21px;line-height:1.6;color:var(--green);word-break:break-word}.audio-status{font-size:10px;color:#8e9788;margin-bottom:18px;display:flex;align-items:center;gap:7px}.audio-status svg{width:15px;height:15px}.audio-buttons{display:flex;gap:8px}.audio-buttons .primary{flex:1;justify-content:center;padding:13px 10px}.toggle-row{display:flex;justify-content:space-between;align-items:center;gap:8px;border-top:1px solid var(--line);padding-top:16px;margin-top:17px;font-size:12px}.toggle{position:relative;background:#dadfd1;width:42px;height:25px;border-radius:20px;flex-shrink:0}.toggle:after{content:'';position:absolute;width:19px;height:19px;top:3px;left:3px;background:white;border-radius:50%;transition:transform .2s}.toggle.on{background:var(--green)}.toggle.on:after{transform:translateX(17px)}.read-tip{background:#e5e9d9}.next-book{margin-top:auto;text-align:left;display:flex;gap:10px;align-items:center}.next-book img{width:70px;border-radius:6px}.next-book span{font-size:10px;color:var(--muted);display:block}.next-book strong{font-size:13px;display:block;margin-top:5px}.page-navigation{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:17px}.nav-page{display:flex;gap:7px;align-items:center;justify-content:center;border:1px solid #d7ddce;border-radius:10px;background:#fafaf2;min-height:47px;padding:12px 17px;font-size:12px}.page-count{font-size:12px;color:#84907b;display:flex;align-items:center;gap:10px}.page-dots{display:flex;gap:5px}.page-dots i{width:6px;height:6px;background:#cbd2c1;border-radius:50%}.page-dots i.active{width:20px;border-radius:5px;background:var(--green)}.finish{padding:35px 25px;text-align:center}.finish h2{font-size:25px;margin:15px 0}.finish p{font-size:13px;color:var(--muted);line-height:1.8}.finish .finish-img{width:100%;display:block;max-height:50dvh;object-fit:contain;margin:0 auto 20px}.finish-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}.dialog-backdrop{position:fixed;inset:0;background:#213b3066;display:grid;place-items:center;z-index:100;padding:20px}.dialog{max-width:470px;width:100%;background:var(--white);border-radius:22px;padding:29px;box-shadow:0 20px 70px #0003}.dialog h2{margin:0 0 16px;font-size:22px}.dialog p{color:var(--muted);font-size:13px;line-height:1.9}.dialog .primary{margin-top:15px}.loading{min-height:100dvh;display:grid;place-items:center;color:var(--green)}#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);background:#283f34;color:#fffdf5;padding:13px 22px;border-radius:12px;font-size:12px;max-width:90vw;opacity:0;pointer-events:none;transition:.2s;z-index:200}#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}.mobile-brand{display:none}.progress-line{height:3px;background:#d4dcc9;margin-top:13px;border-radius:3px;overflow:hidden}.progress-line i{display:block;height:100%;background:var(--green)}.reader.no-aside .reader-body{grid-template-columns:1fr;max-width:1380px}.reader.no-aside .reader-aside{display:none}.reader.no-aside .scene-wrap{max-width:1150px;width:100%;margin:auto}.reader.no-aside .page-stage{min-height:0}.reader.no-aside .sentence-list{grid-template-columns:1fr 1fr}.reader.no-aside .word-grid{grid-template-columns:repeat(4,1fr)}
@media(min-width:1450px){.workspace{padding-left:60px;padding-right:60px}.book-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.hero{min-height:305px}.hero-art{justify-content:flex-end}.hero-book{max-width:430px}}
@media(max-width:1100px){.shell{grid-template-columns:185px 1fr}.sidebar{width:185px;padding:30px 16px}.workspace{padding:0 28px 28px}.brand strong{font-size:18px}.brand small{font-size:8px}.side-bottom{padding:15px 12px}.hero-copy{padding:27px 0 27px 25px}.hero-art{padding-right:20px}.hero{min-height:250px}.book-grid{gap:23px 18px}.book-picture{padding:18px 12px 16px 17px}.reader-body{grid-template-columns:minmax(0,1fr) 255px;gap:17px;padding:18px}.aside-card{padding:18px}.reader-header{padding:12px 19px}.word-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:850px){.reader-body{grid-template-columns:1fr}.reader-aside{display:grid;grid-template-columns:1fr 1fr}.reader-aside .next-book{display:none}.reader-aside .read-tip{display:none}.word-grid{grid-template-columns:repeat(3,1fr)}.page-stage{min-height:0}.reader-aside .aside-card{padding:18px}.now-playing{min-height:40px;font-size:18px}.reader-header .reader-title p{max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.hero{grid-template-columns:1fr .85fr}.hero h2{font-size:26px}.hero p{font-size:11px}.hero-art{padding-right:15px}.book-grid{grid-template-columns:repeat(2,1fr)}.section-head{align-items:flex-start}.filter-row{gap:2px}.chip{padding:8px}.top-actions{gap:9px}.audio-pill{font-size:10px}}
@media(max-width:650px){.shell{display:block}.sidebar{display:none}.workspace{padding:0 19px 25px}.topbar{height:80px}.topbar h1{font-size:17px}.topbar .eyebrow{font-size:8px}.audio-pill{padding:8px 10px}.avatar{display:none}.hero{margin-top:20px;grid-template-columns:1fr;min-height:0}.hero-copy{padding:24px 24px 0}.hero h2{font-size:30px}.hero p{margin-bottom:15px}.hero-art{padding:17px 45px 33px}.hero-book{max-width:350px;transform:rotate(-4deg)}.hero-note{bottom:8px}.hero-star{top:-25px}.section-head{margin-top:24px;display:block}.filter-row{margin-top:12px}.search-row{align-items:flex-start}.search{width:210px}.small-note{font-size:9px;max-width:90px;line-height:1.6}.book-grid{gap:25px 15px}.book-meta h3{font-size:14px}.book-meta p{font-size:10px}.book-footer{font-size:8px;gap:5px}.shelf-footer{font-size:9px}.reader-header{padding:10px 12px;gap:9px}.reader-title h1{font-size:14px}.reader-title p{font-size:9px;max-width:160px!important}.reader-controls{gap:5px}.reader-controls .icon-button,.reader-header>.icon-button{width:42px;height:42px;border-radius:10px}.rate{padding:10px 9px;font-size:11px}.reader-body{padding:12px;gap:14px}.page-tabs{gap:5px}.page-tabs button{padding:10px 12px;font-size:11px}.reader-aside{grid-template-columns:1fr}.reader-aside .aside-card:nth-child(2){display:none}.aside-card{padding:17px}.word-grid{grid-template-columns:repeat(2,1fr);padding:15px;gap:10px}.word{min-height:100px}.stage-heading{padding:22px 20px 4px}.stage-heading h2{font-size:22px}.sentence-list{padding:15px}.sentence{padding:15px;gap:11px}.sentence strong{font-size:17px}.sentence small{font-size:11px}.qa-block{padding:15px}.qa-line strong{font-size:15px}.page-navigation{gap:8px}.nav-page{padding:12px;font-size:11px}.page-count{font-size:10px;gap:6px}.reader.no-aside .word-grid{grid-template-columns:repeat(2,1fr)}.reader.no-aside .sentence-list{grid-template-columns:1fr}.finish{padding:20px 15px}}
.nav-item{white-space:nowrap;padding:13px 12px;gap:10px;font-size:13px}
@media(max-width:650px){.avatar{display:grid;width:30px;height:30px;font-size:16px}.top-actions{gap:7px}.audio-pill{font-size:9px;padding:8px}.topbar h1{font-size:16px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}