@font-face{font-family:system-fallback;src:local('Arial')}*{box-sizing:border-box} :root{color-scheme:dark;--bg:#111317;--panel:#191c22;--panel2:#1d2128;--line:#2b3038;--text:#edeef0;--muted:#999fa9;--accent:#cedcbf;--green:#b8d7bb;--red:#eaa9a7;--radius:18px}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default;opacity:.4}button,a{ -webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{color:inherit}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:4px}button{border:0;background:none}input,select{background:var(--panel);color:var(--text);border:1px solid var(--line);border-radius:10px;padding:12px 15px}input::placeholder{color:#777f8c}h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:520;letter-spacing:-.04em}h1{font-size:52px;line-height:1.12}h2{font-size:27px;line-height:1.25}h3{font-size:19px}small{font-size:12px}svg{display:block}.hidden{display:none!important}.muted{color:var(--muted)}.eyebrow{font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);font-weight:600}.serif{font-family:Georgia,'Times New Roman',serif;font-style:italic;font-weight:400}.brand-mark{font-family:Georgia,serif;font-size:35px;font-style:italic;line-height:1;color:var(--accent)}.brand{display:flex;align-items:center;gap:12px;text-align:left}.brand-text{font-size:14px;line-height:1.3;letter-spacing:-.025em;font-weight:550}.brand-text small{color:var(--muted);font-size:10px;letter-spacing:.1em;font-weight:400}.sidebar{width:210px;position:fixed;inset:0 auto 0 0;border-right:1px solid var(--line);padding:31px 22px 24px;display:flex;flex-direction:column;z-index:20;background:var(--bg)}.sidebar .brand{padding:0 5px}.nav{display:flex;flex-direction:column;gap:6px;margin-top:54px}.nav button{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:9px;color:var(--muted);font-size:13px;text-align:left}.nav button svg{width:18px;height:18px;stroke-width:1.5}.nav button:hover{color:var(--text);background:#ffffff05}.nav button.active{background:#cddcbe10;color:var(--accent)}.nav button.active:after{content:'';width:4px;height:4px;background:var(--accent);border-radius:50%;margin-left:auto}.sidebar-foot{margin-top:auto;border-top:1px solid var(--line);padding-top:19px;font-size:11px;color:var(--muted)}.sync{display:flex;align-items:center;gap:7px;font-size:11px;color:var(--muted)}.dot{width:5px;height:5px;background:var(--accent);border-radius:50%;display:inline-block}.sync.offline .dot{background:var(--red)}.sidebar-foot .sources-link{display:block;margin-top:14px;text-align:left;padding:0;color:#777f8b;font-size:10px}.main-shell{margin-left:210px;min-height:100vh}.topbar{height:82px;margin:0 42px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.breadcrumb{font-size:11px;letter-spacing:.05em;color:var(--muted)}.breadcrumb span{color:var(--text);padding-left:10px}.profile{display:flex;align-items:center;gap:11px;font-size:12px;color:var(--muted)}.avatar{height:31px;width:31px;border:1px solid #5d6559;background:#cddcbe10;border-radius:50%;display:grid;place-items:center;color:var(--accent);font-family:Georgia,serif;font-style:italic;font-size:17px}.page{max-width:1390px;margin:auto;padding:35px 42px 60px}.hero{display:grid;grid-template-columns:1fr 1fr;min-height:410px;align-items:center;gap:20px;border-bottom:1px solid var(--line);padding-bottom:25px}.hero-copy{padding:12px 0 35px;position:relative;z-index:2}.hero h1{font-size:clamp(49px,4.7vw,76px);letter-spacing:-.057em;margin:22px 0}.hero h1 .serif{color:var(--accent)}.hero p{font-size:13px;color:var(--muted);max-width:340px;line-height:1.8}.actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:25px}.btn{display:inline-flex;justify-content:center;align-items:center;gap:14px;border:1px solid var(--line);padding:12px 20px;border-radius:9px;font-size:12px;font-weight:550;transition:background .2s,transform .2s;min-height:44px}.btn:hover{background:var(--panel2)}.btn.primary{background:var(--accent);color:#1a2117;border-color:var(--accent)}.btn.primary:hover{background:#dbe6d0;transform:translateY(-1px)}.btn.ghost{border-color:transparent;color:var(--muted);padding-left:8px}.btn.danger{border-color:#eaa9a730;color:var(--red)}.arrow{font-size:18px;font-weight:400}.hero-visual{height:390px;position:relative;isolation:isolate;background:radial-gradient(ellipse at center,#899bba12,transparent 68%)}.hero-visual:before{content:'';position:absolute;inset:30px 25px;border:1px solid #ffffff06;border-radius:50%;transform:scaleX(.7);pointer-events:none}.hero-visual .viewer{height:330px;width:100%;position:absolute;top:6px}.model-caption{position:absolute;bottom:8px;left:0;right:0;text-align:center;pointer-events:none}.model-caption h3{font-size:18px;margin:4px 0 7px}.model-caption .eyebrow{font-size:9px}.preview-label{position:absolute;top:5px;left:12px;z-index:1}.preview-index{position:absolute;top:5px;right:10px;font-family:ui-monospace,monospace;font-size:10px;color:#6c7480}.model-caption small{color:#747d89;font-size:10px}.tiny-status{position:absolute;bottom:20px;right:8px;display:flex;align-items:center;gap:6px;color:var(--muted);font-size:9px}.pulse{width:5px;height:5px;background:var(--accent);border-radius:50%;box-shadow:0 0 0 4px #cedcbf10}.section-head{display:flex;justify-content:space-between;align-items:end;gap:16px;margin:30px 0 19px}.section-head p{font-size:12px;color:var(--muted);margin-top:6px}.section-head h2{font-size:22px}.text-btn{color:var(--muted);font-size:11px;padding:8px 0}.text-btn:hover{color:var(--accent)}.quick-stats{display:grid;grid-template-columns:repeat(3,1fr);border-bottom:1px solid var(--line);padding:23px 0;gap:25px}.quick-stat{display:flex;align-items:center;gap:15px}.quick-stat+.quick-stat{border-left:1px solid var(--line);padding-left:25px}.quick-stat strong{font-size:26px;font-weight:450;letter-spacing:-.04em}.quick-stat span{display:block;font-size:10px;color:var(--muted);line-height:1.5}.quick-stat .stat-icon{color:#6d7684}.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}.category-card{position:relative;border:1px solid var(--line);border-radius:12px;padding:22px;text-align:left;background:linear-gradient(135deg,#1c2027,#191c2200);min-height:192px;transition:border .2s,background .2s,transform .2s}.category-card:hover{border-color:#6b7565;background:var(--panel2);transform:translateY(-3px)}.card-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.category-card .organ-icon{width:30px;height:30px;color:var(--card-color)}.card-num{font-size:10px;color:#646d79;font-family:ui-monospace,monospace}.category-card h3{font-size:17px;letter-spacing:-.025em}.category-card p{font-size:11px;color:var(--muted);margin:5px 0 21px}.card-bottom{display:flex;justify-content:space-between;align-items:center;font-size:10px;color:#959da8}.card-progress{height:2px;background:#ffffff08;margin:12px 0 0;border-radius:2px;overflow:hidden}.card-progress span{height:100%;display:block;background:var(--card-color)}.card-all{background:#cedcbf08;display:flex;flex-direction:column;justify-content:center;border-color:#cedcbf24}.card-all .card-top{margin-bottom:14px}.card-all h3{font-size:25px;color:var(--accent)}.home-bottom{display:flex;justify-content:space-between;margin-top:25px;font-size:10px;color:#626c78;gap:15px}.page-intro{margin:9px 0 30px}.page-intro h1{font-size:40px;margin:12px 0}.page-intro p{font-size:13px;color:var(--muted);max-width:650px}.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:20px 0}.toolbar input{flex:1;min-width:200px;font-size:12px}.toolbar select{font-size:12px}.chips{display:flex;gap:5px;flex-wrap:wrap}.chip{border:1px solid var(--line);border-radius:7px;padding:8px 13px;font-size:11px;color:var(--muted);min-height:38px}.chip.active{color:var(--accent);border-color:#cedcbf50;background:#cedcbf0d}.empty{padding:55px 30px;border:1px dashed var(--line);border-radius:14px;text-align:center;color:var(--muted)}.empty h3{color:var(--text);margin:12px 0}.empty p{font-size:12px;max-width:420px;margin:auto}.viewer{position:relative;overflow:hidden;min-height:200px}.viewer canvas{display:block;position:relative;z-index:0;touch-action:none}.model-loading{position:absolute;inset:0;z-index:4;display:flex;align-items:center;justify-content:center;gap:10px;font-size:11px;color:var(--muted);pointer-events:none}.model-loading button{pointer-events:auto}.spinner{height:16px;width:16px;border:1px solid #cedcbf20;border-top-color:var(--accent);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.viewer-controls{display:flex;justify-content:center;gap:6px;position:absolute;right:16px;bottom:15px;z-index:3}.icon-btn{width:35px;height:35px;display:inline-grid;place-items:center;border:1px solid var(--line);background:#161b22b0;border-radius:8px;color:var(--muted);font-size:14px;min-height:35px}.icon-btn:hover,.icon-btn.active{color:var(--accent);border-color:#cedcbf50}.icon-btn svg{width:15px;height:15px}.small-btn{font-size:10px;color:var(--accent);padding:7px 10px;border-radius:6px;border:1px solid var(--line)}.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius)}dialog{background:#191d24;color:var(--text);border:1px solid #3b424e;border-radius:20px;padding:0;width:min(590px,calc(100vw - 28px));max-height:calc(100dvh - 35px);box-shadow:0 35px 100px #0009}dialog::backdrop{background:#070a10bf;backdrop-filter:blur(8px)}.modal-head{padding:26px 29px 20px;border-bottom:1px solid var(--line);display:flex;align-items:start;justify-content:space-between;gap:12px}.modal-head h2{font-size:26px;margin-top:7px}.modal-body{padding:24px 29px 28px}.field{margin-bottom:23px}.field>label{display:block;font-size:11px;color:var(--muted);margin-bottom:10px}.segment{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:6px}.segment button{border:1px solid var(--line);border-radius:8px;min-height:46px;padding:10px;color:var(--muted);font-size:12px}.segment button.active{color:var(--accent);border-color:#cedcbf70;background:#cedcbf0c}.segment button small{display:block;font-size:9px;color:var(--muted);font-weight:400;margin-top:3px}.field select{width:100%;font-size:12px}.setup-note{font-size:11px;color:var(--muted);margin:16px 0}.full{width:100%}.modal-description{font-size:12px;color:var(--muted);margin-bottom:23px}.setup-row{display:grid;grid-template-columns:1fr 1fr;gap:15px}.setup-row .field{margin-bottom:14px}.quiz{min-height:100dvh;display:flex;flex-direction:column;background:radial-gradient(ellipse at 50% 35%,#5a6a8419,transparent 65%),var(--bg)}.quiz-top{height:75px;border-bottom:1px solid #ffffff08;display:flex;align-items:center;justify-content:space-between;padding:0 40px;gap:15px}.quiz-top .brand-text{font-size:12px}.quiz-stats{display:flex;gap:29px;font-size:12px;font-family:ui-monospace,SFMono-Regular,monospace;color:var(--muted)}.quiz-stats strong{color:var(--text);font-weight:500}.quiz-stats span small{font-size:9px;margin-left:4px}.quiz-exit{font-size:11px;color:var(--muted)}.quiz-progress{height:2px;background:#ffffff06}.quiz-progress span{height:100%;display:block;background:var(--accent);transition:width .4s}.quiz-stage{position:relative;max-width:1350px;width:100%;margin:0 auto;flex:0 0 auto}.quiz-viewer{height:clamp(240px,39vh,430px);min-height:230px;transition:opacity .25s}.quiz-stage .stage-label{position:absolute;top:21px;left:33px;z-index:2;font-size:9px;color:#6d7888;letter-spacing:.12em;text-transform:uppercase}.stage-label .dot{background:#f5f7f1;margin-right:8px;box-shadow:0 0 0 3px #ffffff06}.angle-labels{position:absolute;bottom:19px;left:0;width:100%;display:grid;grid-template-columns:3fr 4fr 3fr;text-align:center;pointer-events:none;font-size:8px;color:#657080;letter-spacing:.15em;text-transform:uppercase}.quiz-stage .viewer-controls{bottom:12px;right:24px}.quiz-center{width:min(760px,calc(100% - 40px));margin:0 auto;text-align:center;padding:10px 0 15px}.quiz-center h1{font-size:clamp(21px,2vw,28px);font-weight:450;line-height:1.4;margin:11px auto 16px;max-width:740px;letter-spacing:-.025em}.quiz-round{font-size:9px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);display:flex;justify-content:center;gap:12px}.mode-badge{color:var(--accent)}.answer-form{display:flex;align-items:center;gap:8px;max-width:650px;margin:0 auto}.answer-input{font-size:clamp(22px,3vw,40px);border:0;border-bottom:1px solid #4c5665;background:none;text-align:center;border-radius:0;width:100%;padding:8px 2px 15px;letter-spacing:-.04em;font-weight:450;min-width:0}.answer-input:focus{outline:none;border-bottom-color:var(--accent)}.answer-input::placeholder{font-size:clamp(16px,2vw,23px);letter-spacing:-.03em;color:#596372}.submit-arrow{font-size:23px;color:var(--accent);width:44px;height:50px;border-bottom:1px solid #4c5665}.input-note{font-size:10px;color:#737d8c;margin:12px 0}.quiz-bottom-actions{display:flex;align-items:center;justify-content:center;gap:25px;margin-top:19px}.quiz-bottom-actions button{color:var(--muted);font-size:10px;min-height:33px}.toggle-line{display:flex;align-items:center;gap:7px;font-size:10px;color:var(--muted)}.toggle-line input{accent-color:var(--accent);width:12px;height:12px}.options{display:grid;grid-template-columns:1fr 1fr;gap:10px;text-align:left;margin:20px auto 0;max-width:730px}.option{background:#1e242d70;border:1px solid #343d4a;border-radius:8px;padding:15px 15px;display:flex;align-items:center;gap:13px;font-size:13px;min-height:58px}.option:hover{border-color:#909d88;background:#cedcbf07}.option .letter{font-family:ui-monospace,monospace;font-size:10px;border:1px solid var(--line);border-radius:4px;width:22px;height:24px;display:grid;place-items:center;flex-shrink:0;color:#808b9b}.option.correct{border-color:#aaccab90;color:var(--green);background:#b8d7bb10}.option.wrong{border-color:#eaa9a780;color:var(--red);background:#eaa9a710}.option:disabled{opacity:1}.feedback{margin:12px auto 0;max-width:700px;border:1px solid var(--line);background:#181f28;border-radius:12px;padding:17px 20px;text-align:left;animation:appear .25s ease}.feedback h3{font-size:16px;color:var(--green);letter-spacing:-.02em}.feedback.wrong h3{color:var(--red)}.feedback .solution{font-size:20px;margin:8px 0;color:var(--text);letter-spacing:-.025em}.feedback p{font-size:11px;color:var(--muted);line-height:1.65}.feedback-actions{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:13px}.feedback-actions .btn{padding:8px 16px;min-height:38px}.source-btn{font-size:10px;color:var(--accent);padding:0;text-align:left}.self-grade{font-size:10px;text-decoration:underline;text-underline-offset:3px;color:var(--muted);padding:8px 0 0}.keyboard{display:flex;flex-direction:column;gap:5px;margin:20px auto 12px;width:min(595px,100%)}.key-row{display:flex;justify-content:center;gap:4px}.key{height:30px;min-width:32px;background:#222b37;border:1px solid #303b4b;border-bottom:2px solid #354152;border-radius:4px;font-size:10px;color:#8f9caf;flex:1;max-width:45px;transition:background .08s}.key.wide{max-width:70px;flex:1.7;font-size:8px}.key.space{max-width:320px;flex:6}.key.pressed{background:#a6b99a;color:#172015;border-color:#a6b99a}.quiz-footer{margin-top:auto;padding:15px 30px 20px;display:flex;justify-content:space-between;font-size:9px;color:#5f6b7c}.quiz-footer button{color:#788594;font-size:9px}.result-top{display:grid;grid-template-columns:210px 1fr;gap:48px;padding:35px;align-items:center}.score-ring{height:180px;width:180px;border-radius:50%;background:conic-gradient(var(--accent) calc(var(--score)*1%),#ffffff08 0);padding:5px}.score-inner{height:100%;width:100%;border-radius:50%;background:var(--panel);display:flex;align-items:center;justify-content:center;flex-direction:column}.score-inner strong{font-size:46px;font-weight:400;letter-spacing:-.06em}.score-inner small{color:var(--muted);font-size:10px}.result-stats{display:flex;gap:35px;margin:19px 0 25px}.result-stats strong{font-size:29px;display:block;font-weight:450}.result-stats small{font-size:10px;color:var(--muted)}.green{color:var(--green)}.red{color:var(--red)}.review-list{display:flex;flex-direction:column;gap:10px}.review-item{border:1px solid var(--line);border-radius:11px;padding:18px 20px;display:flex;gap:15px;align-items:flex-start}.review-status{height:23px;width:23px;display:grid;place-items:center;border-radius:50%;background:#b8d7bb0d;color:var(--green);font-size:12px;flex-shrink:0}.review-status.wrong{color:var(--red);background:#eaa9a70e}.review-content{flex:1;min-width:0}.review-content h3{font-size:14px;letter-spacing:-.015em}.review-content p{font-size:11px;color:var(--muted);margin-top:6px}.review-content .right-answer{color:var(--accent)}.review-content .source-btn{margin-top:8px}.review-tools{display:flex;gap:5px}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.stat-card{padding:23px}.stat-card strong{font-size:35px;letter-spacing:-.05em;font-weight:400;display:block;margin-top:13px}.stat-card small{font-size:11px;color:var(--muted)}.stats-columns{display:grid;grid-template-columns:1fr 1fr;gap:22px}.progress-row{margin:22px 0}.progress-row-head{display:flex;justify-content:space-between;font-size:11px;margin-bottom:10px}.progress-bar{height:5px;border-radius:5px;background:#ffffff08;overflow:hidden}.progress-bar span{display:block;height:100%;background:var(--accent);border-radius:5px}.progress-detail{font-size:10px;color:var(--muted);margin-top:6px}.inset{padding:25px}.weak-item{display:flex;gap:10px;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--line);font-size:12px}.weak-item small{color:var(--red);font-size:10px;display:block;margin-top:4px}.history-item{padding:14px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:12px;font-size:12px}.history-item small{display:block;color:var(--muted);font-size:10px;margin-top:3px}.atlas-layout{display:grid;grid-template-columns:280px 1fr;gap:20px}.atlas-list{height:570px;overflow:auto;padding:8px;scrollbar-width:thin}.atlas-list button{display:block;width:100%;text-align:left;padding:12px 13px;font-size:12px;border-radius:7px;color:var(--muted)}.atlas-list button.active{color:var(--accent);background:#cedcbf0c}.atlas-list button:hover{background:#ffffff05}.atlas-detail{min-width:0;position:relative;overflow:hidden}.atlas-viewer{height:430px;background:radial-gradient(ellipse at center,#8f9fb515,transparent 72%)}.atlas-heading{padding:23px 25px 0;display:flex;justify-content:space-between;align-items:start}.atlas-heading h2{font-size:24px;margin-top:8px}.atlas-info{padding:0 25px 25px}.atlas-info .fact-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px}.fact-box{border-top:1px solid var(--line);padding:12px 0}.fact-box p{font-size:12px;margin-top:5px}.atlas-note{font-size:10px;color:var(--muted);margin:16px 0 0}.doc-layout{display:grid;grid-template-columns:210px 1fr;gap:24px;align-items:start}.book-list{display:flex;flex-direction:column;gap:7px}.book-list button{text-align:left;padding:13px 15px;border:1px solid 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/* LEA moch wos — warm graphite, quiet gold, an editorial anatomy atelier. */
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.quick-stat .stat-icon{width:22px;height:22px;flex-shrink:0}.sidebar>.brand{flex-direction:column;align-self:center;align-items:center;gap:9px}.sidebar>.brand .brand-logo{width:94px;height:63px}.sidebar>.brand .brand-text{font-size:10px;text-align:center;white-space:nowrap}.sidebar>.brand .brand-text small{display:none}.nav{margin-top:35px}@media(max-width:850px){.sidebar>.brand .brand-logo{width:55px;height:46px}.sidebar>.brand .brand-text{display:none}}@media(max-width:620px){.nav{margin-top:0}.sidebar>.brand{display:none}.quick-stat .stat-icon{display:none}}
/* Final palette: black, porcelain and graphite with translucent glass surfaces. */
:root{--bg:#101113;--panel:#191b1e;--panel2:#23262a;--line:#ffffff17;--text:#efefec;--muted:#9b9fa5;--accent:#dadddf;--green:#b8cfbc;--red:#d9aaa6}body{background:radial-gradient(ellipse at 82% 8%,#b8bdc206,transparent 42%),var(--bg)}.sidebar{background:#101113cc;backdrop-filter:blur(20px);border-color:#ffffff12}.topbar{border-color:#ffffff12}.brand-mark{color:#eceeea}.sidebar .brand-text{color:#c6c9cc}.nav button.active{color:#f1f1ed;background:#ffffff08}.nav button.active:after{background:#e7e9e6}.hero{border-color:#ffffff17}.hero-copy>.eyebrow{color:#8f969e}.hero h1 .serif{color:#cbced2}.hero p{color:#9c9fa5}.hero-visual{background:radial-gradient(ellipse at center,#d7e0ed09,transparent 70%)}.hero-visual:before{border-color:#ffffff08}.btn{border-color:#ffffff22;background:#ffffff03}.btn.primary{background:#dadddf;color:#17191c;border-color:#dadddf}.btn.primary:hover{background:#f2f3f0}.btn.ghost{background:none}.category-card{--card-color:#b5bac2!important;background:linear-gradient(130deg,#ffffff06,#ffffff01);border-color:#ffffff18;backdrop-filter:blur(15px)}.category-card:hover{background:#ffffff08;border-color:#ffffff40}.category-card .organ-icon{color:#bac0c8}.category-card p{color:#949ba4}.card-all{background:linear-gradient(140deg,#ffffff08,#ffffff02)!important;border-color:#ffffff25}.card-all h3{color:#e0e3e6}.card-num{color:#626b78}.card-bottom{color:#969ca5}.card-progress span{background:#b7bec8}.avatar{color:#cbd0d7;background:#ffffff03;border-color:#ffffff30}.panel{background:linear-gradient(130deg,#ffffff04,#ffffff01),#16191cc4;border-color:#ffffff16;backdrop-filter:blur(18px)}.chip.active,.segment button.active{color:#f0f2ef;border-color:#ffffff65;background:#ffffff09}.notice{border-color:#ffffff1b;background:#ffffff03}.atlas-list button.active,.book-list button.active{color:#e5e8eb;background:#ffffff08;border-color:#ffffff25}.option:hover{border-color:#ffffff68;background:#ffffff07}.option .letter{color:#a1a7b0;border-color:#ffffff20}.key.pressed{background:#d8dce1;border-color:#d8dce1;color:#1c2025}.source-btn{color:#c5cbd3}.source-list a{color:#d2d6dd}.quiz-top{border-color:#ffffff12}.quiz-stats{color:#a0a6af}.quiz-round{color:#8f99a7}.mode-badge{color:#d0d4db}.quiz-center .answer-input{color:#f0f1ef}.feedback{background:#1d232ac9;border-color:#ffffff1b;backdrop-filter:blur(20px)}.score-ring{background:conic-gradient(#d0d5dc calc(var(--score)*1%),#ffffff08 0)}dialog{background:#1a1d21e8;border-color:#ffffff28;backdrop-filter:blur(30px)}.modal-head{border-color:#ffffff18}.source-list strong{color:#d8dce0}.home-bottom{color:#656d78}.tiny-status{color:#89939f}.pulse{background:#d1d8de;box-shadow:0 0 0 4px #ffffff06}.dot{background:#d0d6de}#toast{background:#e0e3e7;color:#191d23}#toast button{color:#191d23}.hero .eyebrow,.preview-label{color:#838e9b}.mobile-logo{opacity:.95}.modal-description,.setup-note{color:#9b9fa5}@media(max-width:620px){.sidebar{background:#101113e8;backdrop-filter:blur(22px)}}
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@media(pointer:coarse){.keyboard,#keyboard-toggle{display:none!important}}
/* One large, centered model in training, continuously rotating through 360 degrees. */
.quiz-stage{max-width:1050px}.quiz-viewer{height:clamp(290px,47vh,510px)}.quiz-stage .stage-label{left:25px;top:19px}.quiz-stage .viewer-controls{right:25px;bottom:17px}.quiz-center{padding-top:5px}.quiz-center h1{margin-top:10px}@media(max-height:850px){.keyboard,#keyboard-toggle{display:none!important}.quiz-viewer{height:clamp(245px,43vh,380px)}}@media(max-width:620px){.quiz-viewer{height:clamp(250px,40vh,380px)}.quiz-stage .stage-label{left:20px;font-size:8px}.quiz-stage .viewer-controls{right:17px;bottom:12px}}
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.study-card[open] .study-reveal{font-size:10px}.study-card[open] .study-reveal:after{content:none}