@font-face{font-family:AndikaStudy;src:url('fonts/Andika-Regular.ttf')} 
:root{--ink:#193f51;--teal:#0d756e;--teal-dark:#075a55;--mint:#dff2e9;--sky:#e0eff9;--gold:#ffd169;--coral:#ee9781;--bg:#f0f6f7;--muted:#57727e;--line:#d5e4e8;--ui:'Microsoft YaHei','PingFang SC',sans-serif;--study:'KaiTi','STKaiti','Microsoft YaHei',sans-serif;--shadow:0 18px 50px #163f5110}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.6 var(--ui)}button,input,select{font:inherit;color:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:1px solid var(--line);border-radius:12px;background:#fff;padding:11px 17px;min-height:46px;transition:background .18s,transform .18s,box-shadow .18s}button:hover{background:#f1f8f8}button:active{transform:translateY(1px)}button:disabled{opacity:.45;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #e3a523;outline-offset:4px}a{color:var(--teal);text-decoration:none}input,select{border:1px solid #bfd4db;border-radius:10px;padding:10px 12px;background:#fff;min-height:46px;max-width:100%}select{appearance:none;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='m6 9 6 6 6-6' fill='none' stroke='%23193f51' stroke-width='2'/%3E%3C/svg%3E") no-repeat right 16px center/17px;padding-right:44px}[hidden]{display:none!important}h1,h2,h3,p{margin-top:0}.lab-header{height:98px;background:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 max(28px,calc((100vw - 1336px)/2));border-bottom:1px solid var(--line);gap:24px}.lab-brand{display:flex;align-items:center;gap:13px;color:var(--ink);font-size:21px;font-weight:bold}.brand-symbol{display:grid;place-items:center;width:48px;height:48px;border-radius:13px 13px 20px 6px;background:var(--teal);color:#fff;font:32px var(--study);box-shadow:4px 4px 0 var(--gold)}.lab-brand small{display:block;font-size:11px;font-weight:normal;letter-spacing:2px;color:var(--muted);margin-top:3px}.lab-header nav{display:flex;gap:12px;align-items:center}.lab-header nav>a{padding:12px;color:var(--muted)}.lab-header nav>button{border-color:transparent;background:transparent}.lab-header .nav-active{background:var(--mint);color:var(--teal);font-weight:bold}.lab-header nav>button:hover{background:var(--mint)}#labMain{max-width:1336px;margin:0 auto;padding:38px 28px 70px}.lobby-hero{display:grid;grid-template-columns:1.1fr 1fr;gap:42px;align-items:center;margin-bottom:30px}.eyebrow{font-size:13px;color:var(--teal);letter-spacing:2px;font-weight:bold}.lobby-hero h1{font-size:42px;line-height:1.35;letter-spacing:1px;margin:13px 0}.lobby-hero h1 span{color:var(--teal)}.lobby-hero p{font-size:15px;line-height:1.9;color:var(--muted);max-width:430px}.hero-actions{display:flex;gap:12px;margin-top:23px;flex-wrap:wrap}.primary{background:var(--teal);color:white;border-color:var(--teal);font-weight:bold;box-shadow:0 5px 0 var(--teal-dark);padding:13px 25px}.primary:hover{background:var(--teal-dark)}.primary:active{transform:translateY(3px);box-shadow:0 2px 0 var(--teal-dark)}.hero-board{position:relative;background:#fff;border:1px solid var(--line);padding:26px 30px 30px;border-radius:26px;box-shadow:var(--shadow);transform:rotate(-1deg)}.hero-board .board-label{font-size:13px;display:flex;justify-content:space-between;color:var(--muted)}.hero-board .board-label span:last-child{background:var(--mint);border-radius:20px;padding:0 10px;color:var(--teal)}.hero-equation{font:36px AndikaStudy,var(--ui);margin:15px 0 18px;display:flex;align-items:center;gap:12px}.hero-equation b{font-size:16px;background:#fff0c6;padding:6px 12px;border-radius:8px;font-weight:normal}.hero-beads{display:grid;grid-template-columns:1fr 80px;gap:20px;align-items:center}.ten-frame{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:6px;border:2px solid #89beb8;border-radius:14px;background:#edf8f4;padding:9px;max-width:440px;width:100%;margin:auto}.ten-frame .cell{aspect-ratio:1;min-width:0;border-radius:8px;background:#fff;border:1px dashed #b6d7d3;display:flex;align-items:center;justify-content:center}.ten-frame svg{width:80%;height:80%}.bead-svg{width:39px;height:39px;display:block;flex-shrink:0}.hero-loose{display:grid;grid-template-columns:repeat(2,1fr);gap:5px}.hero-footer{margin-top:17px;padding-top:15px;border-top:1px dashed var(--line);font-size:13px;color:var(--muted)}.hero-travel{animation:travel 3s ease-in-out infinite}.hero-last{animation:glow 3s ease-in-out infinite}@keyframes travel{0%,18%{transform:translate(0,0);opacity:1}52%,80%{transform:translate(-102px,-48px);opacity:0}100%{transform:translate(0,0);opacity:1}}@keyframes glow{0%,22%,100%{opacity:.15}55%,80%{opacity:1}}.filter-bar{display:flex;gap:14px;align-items:center;flex-wrap:wrap;background:#fff;border:1px solid var(--line);padding:16px 20px;border-radius:17px;margin-bottom:30px}.filter-bar label{display:flex;align-items:center;gap:9px;font-size:13px}.filter-bar .range-fields{display:flex;gap:8px;align-items:center}.range-fields input[type=number]{width:78px}.filter-bar details{margin-left:auto}.filter-bar summary{cursor:pointer;color:var(--muted);padding:10px 0}.range-pop{padding:18px;border:1px solid var(--line);background:#fff;border-radius:14px;position:absolute;z-index:4;box-shadow:var(--shadow);right:28px;max-width:calc(100vw - 56px)}.range-pop>label{margin:8px 0}.range-pop p{font-size:12px;color:var(--muted);max-width:330px;margin:10px 0 0}.catalog-layout{display:grid;grid-template-columns:242px minmax(0,1fr);gap:28px;align-items:start}.topic-nav{position:sticky;top:20px;display:grid;gap:5px}.topic-nav>button{display:flex;align-items:center;gap:13px;text-align:left;border-color:transparent;background:transparent;min-height:55px;padding:10px 15px}.topic-nav>button:hover{background:#fff}.topic-nav>button.active{background:#fff;border-color:var(--line);box-shadow:0 5px 16px #163f5107;font-weight:bold}.topic-icon{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;font:23px AndikaStudy,var(--ui);background:var(--sky)}.mint .topic-icon,.topic-icon.mint{background:var(--mint)}.gold .topic-icon,.topic-icon.gold{background:#fff0c6}.coral .topic-icon,.topic-icon.coral{background:#ffebe4}.topic-nav small{margin-left:auto;font-size:11px;color:var(--muted)}.catalog-heading{display:flex;gap:15px;align-items:center;margin:4px 0 19px}.catalog-heading .topic-icon{width:52px;height:52px;font-size:30px;border-radius:15px}.catalog-heading h2{font-size:25px;margin:0}.catalog-heading p{color:var(--muted);font-size:13px;margin:2px 0 0}.model-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.model-card{position:relative;text-align:left;padding:23px;border-radius:19px;min-height:151px;box-shadow:0 5px 18px #163f5105;display:flex;flex-direction:column;align-items:flex-start;gap:13px;overflow:hidden}.model-card:hover{background:white;border-color:#75bcb4;box-shadow:0 12px 28px #163f5112;transform:translateY(-2px)}.model-card h3{font-size:19px;margin:0;letter-spacing:.5px}.model-card>span{font-size:12px;color:var(--muted)}.model-card .card-bottom{display:flex;justify-content:space-between;align-items:center;width:100%;margin-top:auto;font-size:12px;color:var(--teal)}.model-card .card-arrow{font-size:25px}.status-pill{display:inline-block;border-radius:15px;padding:3px 9px;background:#edf5f8;font-size:11px;color:var(--muted)}.status-pill.extension{background:#fff3d6;color:#815b17}.status-pill.mastered{background:var(--mint);color:var(--teal)}.catalog-note{font-size:12px;color:var(--muted);line-height:1.9;margin:23px 0}.practice-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:24px}.practice-top>div{display:flex;gap:10px;align-items:center}.practice-title h1{font-size:29px;margin:0 0 4px}.practice-title p{font-size:12px;color:var(--muted);margin:0}.practice-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:24px;align-items:start}.workbench{background:#fff;border:1px solid var(--line);border-radius:24px;overflow:hidden;box-shadow:var(--shadow)}.stepper{display:flex;align-items:center;gap:14px;padding:18px 27px;border-bottom:1px solid var(--line);background:#f9fcfd}.stepper span{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:8px}.stepper i{font-style:normal;width:25px;height:25px;display:grid;place-items:center;background:#e7eff2;border-radius:50%;font-size:12px}.stepper span.current{color:var(--teal);font-weight:bold}.stepper span.current i,.stepper span.done i{background:var(--teal);color:#fff}.stepper em{width:28px;height:1px;background:var(--line)}.question-panel{padding:26px 30px 17px;display:flex;align-items:flex-start;gap:14px}.question-panel h2{font:25px/2 var(--study);margin:0;flex:1}.question-panel .speak{width:46px;height:46px;flex-shrink:0;padding:10px;display:grid;place-items:center;color:var(--teal);border-color:#acd0ca;background:#f0faf6}.speak svg{width:22px}.question-panel ruby{ruby-align:center}.question-panel rt{font:11px AndikaStudy,var(--ui);color:#6a8692}.scene-box{margin:0 24px 22px;min-height:330px;background:#f1f7f9;border:1px solid #dce9ec;border-radius:18px;position:relative;padding:24px;overflow:hidden}.scene-box h3{font-size:14px;color:var(--muted);font-weight:normal;text-align:center;margin:0 0 14px}.scene-row{display:flex;gap:20px;justify-content:center;align-items:center;flex-wrap:wrap}.scene-zone{flex:1;min-width:120px;border:2px dashed #a3c9d7;background:#fff;border-radius:16px;padding:14px;min-height:118px;transition:border-color .2s,background .2s}.scene-zone.yellow{border-color:#e4c06a;background:#fffdf6}.scene-zone b{display:block;font-size:12px;color:var(--muted);margin-bottom:10px;font-weight:normal}.scene-beads{display:flex;gap:6px;flex-wrap:wrap;align-items:center;min-height:45px}.bead-button{padding:2px;min-height:43px;min-width:43px;border-color:transparent;border-radius:50%;background:transparent;touch-action:none}.bead-button:hover{background:#d4e8ec}.bead-button.marked{box-shadow:0 0 0 3px #e3b532;background:#fff1cc}.bead-button.marked svg{opacity:.7}.scene-operator{font:32px AndikaStudy,var(--ui);color:#94acb5}.scene-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin:21px 0 0}.scene-actions button{background:#fff;border-color:#bcd6da}.scene-actions .warm{background:#fff1cb;border-color:#e9c477}.scene-note{font-size:12px;color:var(--muted);text-align:center;margin:14px 0 0}.scene-count{font:25px AndikaStudy,var(--ui);color:var(--ink)}.scene-counter{display:flex;gap:10px;align-items:center;justify-content:center;margin:15px 0}.scene-counter button{min-width:48px;font-size:22px;padding:5px}.rods{display:flex;gap:9px;align-items:flex-start;flex-wrap:wrap;justify-content:center;min-height:77px}.rod-bundle{width:29px;height:69px;border:0;background:transparent;padding:0;display:inline-block}.rod-bundle svg{width:29px;height:69px}.rod-one{width:7px;height:69px;border-radius:3px;background:#dca543;border:1px solid #b78739;display:inline-block}.build-value{font:34px AndikaStudy,var(--ui);min-width:55px;text-align:center}.model-info{font:23px AndikaStudy,var(--ui);text-align:center;margin:8px 0 24px}.equation-panel{margin:0 24px 23px;padding:21px;background:#fffbef;border:1px solid #ecd99f;border-radius:17px}.equation-panel h3{font-size:17px;margin:0 0 12px}.equation-preview{font:28px AndikaStudy,var(--ui);letter-spacing:2px;margin-bottom:14px;text-align:center}.answer-fields{display:flex;gap:15px;flex-wrap:wrap}.answer-field{display:flex;flex-direction:column;gap:7px;flex:1;min-width:115px}.answer-field>span{font-size:13px;color:var(--muted)}.answer-field input{font:26px AndikaStudy,var(--ui);width:100%;height:60px;text-align:center}.answer-field select{font-size:22px;height:60px}.answer-field.invalid input,.answer-field.invalid select{border:2px solid #c16849;background:#fff3e9}.choice-row{display:flex;gap:8px;flex-wrap:wrap}.choice-row button{font-size:20px;min-width:52px}.choice-row .chosen{background:var(--mint);border-color:var(--teal)}.bench-footer{border-top:1px solid var(--line);padding:18px 24px;display:flex;justify-content:space-between;align-items:center;gap:12px}.bench-footer>div{display:flex;gap:9px}.bench-status{padding:0 28px 18px;min-height:35px;font-size:14px;color:var(--teal);line-height:1.8}.bench-status.error{color:#9f5136}.coach-panel{background:#fff;border:1px solid var(--line);border-radius:20px;padding:23px}.coach-icon{width:51px;height:51px;margin-bottom:16px}.coach-panel h2{font-size:19px;margin:0 0 8px}.coach-panel p{font-size:13px;color:var(--muted);line-height:1.9}.coach-panel .hint-button{width:100%;background:#fff1cb;border-color:#e7cc88;margin:7px 0 13px}.hint-text{background:#f1f8f6;border-radius:12px;padding:15px;font-size:14px;line-height:1.9;margin:8px 0}.coach-divider{height:1px;background:var(--line);margin:20px 0}.coach-tools{display:grid;gap:8px}.coach-tools button{font-size:13px;text-align:left}.coach-settings{font-size:12px;color:var(--muted)}.coach-settings label{display:flex;gap:8px;margin-top:12px;align-items:center}.coach-settings input{min-height:0}.queue-row{display:flex;flex-wrap:wrap;justify-content:center;gap:9px}.person{width:52px;height:85px;padding:3px;border-color:transparent;background:transparent;border-radius:12px;position:relative}.person svg{width:40px;height:57px}.person small{display:block;font:11px AndikaStudy,var(--ui);color:var(--muted)}.person.selected{background:#fff0ba;border-color:#e8bc46}.person.blue{background:#d8edf8}.queue-ends{display:flex;justify-content:space-between;color:var(--muted);font-size:12px;margin:0 0 17px}.queue-facts{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:15px}.queue-facts span{background:#fff;border:1px solid var(--line);padding:6px 13px;border-radius:8px;font-size:14px}.rail{display:flex;align-items:center;justify-content:center;gap:8px;margin:30px 0 20px;position:relative}.rail:before{content:'';position:absolute;height:2px;background:#a9c5cf;left:3%;right:3%;top:50%}.rail>span,.rail>button{font:24px AndikaStudy,var(--ui);z-index:1;background:#fff;border:1px solid var(--line);border-radius:11px;min-width:50px;height:59px;display:grid;place-items:center}.rail>button{background:#fff3c8;border:2px dashed #d9b55d}.sorting-slots{display:flex;gap:12px;justify-content:center;margin:20px 0}.sorting-slots button{min-width:65px;min-height:68px;border:2px dashed #94babf;font:26px AndikaStudy,var(--ui)}.shape-item{border-color:transparent;background:#fff;padding:7px;border-radius:14px;min-width:55px}.shape-item svg{width:48px;height:48px;display:block}.shape-item.marked{border:2px solid #c79730;background:#fff1cb}.shape-display{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin:15px 0}.shape-display>svg{width:140px;height:140px}.bins{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:15px}.bin{border:2px dashed #91b6c0;border-radius:13px;padding:12px;min-height:85px;background:#fff}.bin>button{font-size:13px;padding:6px 10px;min-height:36px;width:100%;margin-bottom:8px}.bin .shape-item{min-width:34px;min-height:34px;padding:3px}.bin .shape-item svg{width:30px;height:30px}.puzzle-board{width:165px;height:165px;position:relative;margin:auto;border:3px dashed #8abfb8;background:#fff;display:grid;grid-template-columns:1fr 1fr}.puzzle-board svg{position:absolute;inset:0;width:100%;height:100%}.puzzle-pieces{display:flex;justify-content:center;gap:20px;margin-top:20px}.puzzle-pieces svg{width:65px;height:65px}.record-table{border-collapse:collapse;width:min(100%,430px);margin:20px auto;background:#fff}.record-table td,.record-table th{border:1px solid #bdd2d8;padding:12px 20px;text-align:center}.record-table th{background:#e7f2f4;font-size:14px}.record-table button{border:0;background:transparent;min-width:65px;font:26px AndikaStudy,var(--ui);padding:5px}.record-table .read{background:#fff3cb}.timeline-steps{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-bottom:18px}.timeline-steps span{border:1px solid var(--line);border-radius:12px;background:#fff;padding:8px 12px;font-size:13px}.timeline-steps .current{background:var(--mint);border-color:#87bfb0}.sudoku-board{--n:4;display:grid;grid-template-columns:repeat(var(--n),1fr);width:min(100%,330px);margin:12px auto;border:2px solid var(--ink);background:#fff}.sudoku-cell{border:0;border-right:1px solid #c5d6db;border-bottom:1px solid #c5d6db;border-radius:0;padding:0;aspect-ratio:1;min-height:0;font:24px AndikaStudy,var(--ui);background:#e9f5f1;position:relative}.sudoku-cell.given{background:#fff;font-weight:bold}.sudoku-cell.selected{box-shadow:inset 0 0 0 3px #d9a72d;background:#fff1c9}.sudoku-cell.conflict{color:#ab4d32;background:#ffe4db}.sudoku-palette{display:flex;gap:8px;justify-content:center;flex-wrap:wrap}.sudoku-palette button{min-width:43px;padding:6px;font:22px AndikaStudy,var(--ui)}.clock-face{display:block;width:min(100%,230px);height:auto;margin:0 auto}.clock-controls{display:flex;justify-content:center;gap:15px;flex-wrap:wrap;margin-top:18px}.clock-controls label{font-size:13px;display:flex;gap:7px;align-items:center}.money-coins{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}.coin{width:55px;height:55px;border-radius:50%;background:#fbe9ad;border:2px solid #d3a745;display:grid;place-items:center;font-size:13px;padding:0}.shop-items{display:flex;gap:20px;justify-content:center;margin:8px 0 25px}.shop-item{text-align:center;padding:14px 28px;background:#fff;border:1px solid var(--line);border-radius:13px;font-size:14px}.shop-item svg{width:55px;height:65px;display:block;margin:auto}.success-panel{padding:35px 32px;text-align:center}.success-mark{width:74px;height:74px;display:grid;place-items:center;background:var(--mint);border-radius:50%;margin:0 auto 20px;font-size:40px;color:var(--teal)}.success-panel h2{font-size:26px;margin-bottom:12px}.success-panel p{color:var(--muted);line-height:1.9;max-width:570px;margin:0 auto 21px}.success-relation{font:31px AndikaStudy,var(--ui);background:#fff3ce;border-radius:14px;padding:18px;margin:0 auto 22px;max-width:450px}.success-panel .hero-actions{justify-content:center}.lab-notice{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:var(--ink);color:#fff;padding:13px 21px;border-radius:13px;opacity:0;pointer-events:none;transition:opacity .2s;z-index:50;max-width:90vw}.lab-notice.visible{opacity:1}.drag-ghost{position:fixed;pointer-events:none;z-index:100;opacity:.9;filter:drop-shadow(0 6px 4px #193f5130);transform:translate(-50%,-50%)}dialog{border:0;border-radius:23px;padding:28px;color:var(--ink);width:min(760px,calc(100% - 32px));max-height:85vh;box-shadow:0 30px 80px #193f5130}dialog::backdrop{background:#193f5177}.dialog-heading{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:20px}.dialog-heading h2{font-size:24px;margin:0}.dialog-heading button{border:0;font-size:25px;min-width:45px;padding:4px}.progress-table{width:100%;border-collapse:collapse;font-size:13px}.progress-table th,.progress-table td{text-align:left;padding:12px 8px;border-bottom:1px solid var(--line)}.progress-table th{background:#edf5f6}.dialog-copy{color:var(--muted);font-size:13px;line-height:1.9}.progress-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.empty{padding:30px;color:var(--muted);text-align:center}.coverage-list{display:grid;gap:12px}.coverage-list>div{border:1px solid var(--line);border-radius:13px;padding:15px}.coverage-list h3{font-size:17px;margin:0 0 8px}.coverage-list p{font-size:13px;margin:0;line-height:1.9}.scene-box.updated{animation:scene-arrive .23s ease-out}@keyframes scene-arrive{from{background:#e4f3ee}to{background:#f1f7f9}}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.speech-note{font-size:12px;color:var(--muted);line-height:1.8}.lab-error{border:1px solid #d5a185;background:#fff2e8;padding:20px;border-radius:14px;margin:20px 0}
@media(max-width:1050px){.practice-layout{grid-template-columns:minmax(0,1fr) 235px}.coach-panel{padding:19px}.catalog-layout{grid-template-columns:205px minmax(0,1fr)}.lobby-hero{gap:25px}.lobby-hero h1{font-size:36px}.scene-box{padding:18px}.scene-row{gap:12px}}
@media(max-width:800px){.lab-header{padding:15px 20px;height:auto;min-height:90px}.lab-brand{font-size:18px}.lab-header nav{gap:2px;font-size:12px}.lab-header nav>a,.lab-header nav>button{padding:8px 9px}.lab-brand small{letter-spacing:0;font-size:10px}#labMain{padding:25px 18px 45px}.lobby-hero{grid-template-columns:1fr;gap:23px}.hero-board{max-width:550px;transform:none}.lobby-hero h1{font-size:33px}.catalog-layout{display:block}.topic-nav{position:static;display:flex;overflow:auto;padding-bottom:15px;gap:8px;margin-bottom:10px}.topic-nav>button{flex-shrink:0;background:#e6f0f3;min-height:47px;padding:8px 12px;gap:8px}.topic-nav small{display:none}.topic-icon{width:29px;height:29px}.practice-layout{display:block}.coach-panel{margin-top:20px}.coach-tools{grid-template-columns:1fr 1fr}.practice-top{align-items:flex-start}.practice-top>div{flex-wrap:wrap}.practice-title h1{font-size:23px}.filter-bar{padding:14px;gap:11px}.filter-bar details{margin-left:0}.range-pop{right:18px}.question-panel{padding:21px 21px 15px}.question-panel h2{font-size:23px}.scene-box{margin:0 15px 18px;padding:18px;min-height:290px}.equation-panel{margin:0 15px 18px}.stepper{padding:16px 19px;gap:9px}.stepper span{font-size:12px}.stepper em{width:14px}.bench-footer{padding:17px;flex-wrap:wrap}.bench-footer .primary{margin-left:auto}.person{width:45px}.queue-row{gap:5px}.scene-zone{min-width:110px;padding:10px}.model-card{padding:18px;min-height:150px}.model-card h3{font-size:17px}.model-grid{gap:12px}.catalog-heading h2{font-size:23px}.success-panel{padding:30px 20px}.speech-note{margin-bottom:0}}
@media(max-width:480px){.brand-symbol{width:36px;height:39px;font-size:26px}.lab-brand{gap:9px;font-size:16px}.lab-brand small{font-size:9px}.lab-header{padding:12px 14px;gap:8px;flex-wrap:wrap}.lab-header nav{margin-left:auto}.lab-header nav>a{padding-left:0}.hero-board{padding:20px}.hero-equation{font-size:31px}.hero-beads{grid-template-columns:1fr 65px;gap:12px}.hero-loose svg{width:31px;height:31px}.model-grid{grid-template-columns:1fr}.model-card{min-height:128px}.filter-bar label{font-size:12px}.filter-bar select{font-size:12px;padding-left:9px}.scene-row{gap:9px}.scene-zone{min-width:100%;min-height:105px}.scene-operator{display:none}.scene-beads{gap:4px}.scene-box{padding:15px}.bead-button{min-width:39px;min-height:39px}.bead-svg{width:34px;height:34px}.question-panel h2{font-size:22px;line-height:2.1}.scene-actions{gap:8px}.scene-actions button{font-size:13px;padding:10px 13px}.rail{gap:5px}.rail>span,.rail>button{min-width:40px;font-size:22px}.stepper{padding:14px;gap:6px}.stepper em{width:10px}.stepper span{gap:5px;font-size:11px}.stepper i{width:22px;height:22px}.bench-footer>div{gap:5px}.bench-footer button{padding:10px 11px;font-size:13px}.bench-footer .primary{padding:12px 17px}.practice-top>button{padding:9px 11px;font-size:12px}.queue-facts span{font-size:13px;padding:6px 10px}.sorting-slots{gap:8px}.sorting-slots button{font-size:21px;min-width:65px}.coach-tools{grid-template-columns:1fr}.shop-item{padding:12px 22px}.progress-table{font-size:12px}.progress-table th,.progress-table td{padding:10px 5px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media print{.lab-header,.coach-panel,.bench-footer{display:none}.workbench{box-shadow:none}.scene-box{break-inside:avoid}body{background:#fff}}
.paper-count{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--muted);padding:4px 0}.paper-count select{min-width:100px;font-size:13px}
 .scene-box ruby,.equation-panel ruby,.success-panel ruby{ruby-align:center}.scene-box rt,.equation-panel rt,.success-panel rt{font:9px AndikaStudy,var(--ui);color:#637f8b;line-height:1.2}.scene-actions button:has(ruby),.scene-counter button:has(ruby){padding-top:14px;padding-bottom:8px}.shape-item[data-drag-item]{touch-action:none}.person:has(small){height:93px}.person small{line-height:1.4}.scene-counter ruby{font-family:var(--study)}