*{box-sizing:border-box}
:root{--bg:#050b18;--panel:rgba(10,22,42,.86);--line:rgba(86,171,255,.2);--cyan:#48dfff;--blue:#268dff;--text:#eaf6ff;--muted:#8aa5c5;--red:#ff637d}
html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(ellipse at 50% 32%,#0a2040 0%,#071225 36%,#040914 76%);color:var(--text);font-family:"Vazirmatn",Tahoma,sans-serif;min-height:100vh;overflow-x:hidden}
button,input{font:inherit}.ambient{position:fixed;pointer-events:none;filter:blur(80px);opacity:.16;border-radius:50%;z-index:0}.ambient-a{width:340px;height:340px;background:#008cff;top:15%;left:-100px}.ambient-b{width:280px;height:280px;background:#00d9ff;bottom:5%;right:-80px}
.topbar,.layout,.explore-section,.learn-section,footer{position:relative;z-index:1}.topbar{min-height:78px;border-bottom:1px solid rgba(94,169,255,.12);display:flex;align-items:center;justify-content:space-between;padding:12px clamp(16px,4vw,64px);gap:15px;backdrop-filter:blur(18px)}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--text)}.brand-icon{display:grid;place-items:center;width:42px;height:42px;border:1px solid #39caff66;border-radius:13px;color:var(--cyan);font-size:24px;box-shadow:0 0 25px #08bfff22}.brand strong{display:block;font-size:18px;letter-spacing:.4px}.brand small{display:block;font-size:8px;letter-spacing:1.4px;color:#6e9bbf;margin-top:1px}
.top-status{font-size:11px;color:#93b4d7;display:flex;align-items:center;gap:9px}.pulse,.live-dot{width:7px;height:7px;border-radius:50%;background:#43f6c4;box-shadow:0 0 12px #43f6c4;display:inline-block}.ghost-btn,.tool-btn,.layer-btn,.wide-control{font-family:inherit;color:#b8d9f7;background:#10213a9c;border:1px solid #3a7ebd44;border-radius:10px;cursor:pointer;transition:.2s}.ghost-btn{padding:10px 14px;font-size:11px}.ghost-btn:hover,.tool-btn:hover,.layer-btn:hover{border-color:var(--cyan);color:white}
.layout{max-width:1600px;margin:0 auto;padding:34px clamp(14px,3vw,48px) 30px;display:grid;grid-template-columns:minmax(220px,.78fr) minmax(340px,1.35fr) minmax(250px,.9fr);gap:18px;align-items:stretch}
.intro{padding:15px 4px;align-self:start}.eyebrow{font-size:10px;letter-spacing:2px;color:#6dbbe7;display:flex;align-items:center;gap:9px}.eyebrow span{width:19px;height:1px;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
h1{font-size:clamp(32px,3vw,48px);line-height:1.4;letter-spacing:-1px;margin:15px 0 12px;font-weight:700}h1 em{font-style:normal;color:var(--cyan);text-shadow:0 0 26px #00bfff30}.intro>p{font-size:12px;line-height:2.15;color:#91a9c6;max-width:320px}
.quick-stats{display:flex;gap:18px;margin-top:25px;padding-top:16px;border-top:1px solid #2b527544}.quick-stats div{display:flex;flex-direction:column;gap:4px}.quick-stats strong{font-size:21px;color:#e7f8ff;font-weight:600}.quick-stats span{font-size:9px;color:#7f9cb9}
.search-box{margin-top:25px}.search-box label,.control-label{font-size:10px;color:#9ec8e9;display:block;margin-bottom:8px}.search-row{display:flex;align-items:center;gap:8px;padding:0 11px;border:1px solid #347eb54a;background:#061529a8;border-radius:10px}.search-row span{font-size:21px;color:var(--cyan)}.search-row input{min-width:0;width:100%;padding:11px 0;background:transparent;border:0;outline:0;color:var(--text);font-size:11px}.search-row input::placeholder{color:#54718e}.search-results{display:grid;gap:5px;margin-top:7px}.search-result{width:100%;text-align:right;background:#0a1d33;border:1px solid #2b669044;color:#d8efff;padding:8px 10px;border-radius:8px;font-size:10px;cursor:pointer}.search-result:hover{border-color:#48dfff}.search-empty{font-size:10px;color:#7997b6;padding:8px}
.control-group{margin-top:18px}.layer-controls{display:grid;grid-template-columns:1fr 1fr;gap:6px}.layer-btn{padding:9px 8px;font-size:10px;text-align:right;display:flex;align-items:center;gap:7px}.layer-btn.active{background:#0a3653a8;border-color:#39cfff6b;color:#e6faff}.dot{width:7px;height:7px;display:inline-block;border-radius:50%;flex:0 0 7px}.chamber-dot{background:#d35b75}.vessel-dot{background:#ff657a}.valve-dot{background:#46e5ff}.coronary-dot{background:#ff91d4}.wide-control{margin-top:8px;width:100%;padding:10px;font-size:10px}.wide-control.active{color:#69f2c8;border-color:#43f6c45c;background:#0a332e77}
.viewer-card,.info-card{border:1px solid var(--line);background:linear-gradient(145deg,rgba(12,28,51,.87),rgba(5,15,30,.88));border-radius:19px;box-shadow:0 20px 70px #0003,inset 0 1px #ffffff08;overflow:hidden}.viewer-card{min-width:0}.viewer-head{height:57px;padding:0 16px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #3b78ad26}.viewer-head>div:first-child{display:flex;align-items:center;gap:10px;font-size:12px}.viewer-head small{font-size:8px;letter-spacing:1.5px;color:#6085a7;margin-right:4px}.viewer-tools{display:flex;gap:6px}.tool-btn{width:31px;height:31px;font-size:17px}.tool-btn.active{color:var(--cyan);border-color:#39cfff55;background:#0a3b5b66}
#sceneWrap{height:580px;position:relative;overflow:hidden;background:radial-gradient(ellipse at 50% 46%,#0c3151a6 0%,#07172b55 42%,transparent 70%);touch-action:pan-y}#sceneWrap canvas{width:100%;height:100%;display:block;outline:none}.scanline{position:absolute;inset:0;pointer-events:none;background:linear-gradient(transparent 49.8%,#55dfff08 50%,transparent 50.2%);background-size:100% 7px;opacity:.4;z-index:1}.corner{position:absolute;width:19px;height:19px;z-index:2;pointer-events:none;border-color:#42caff66}.corner-tl{top:13px;left:13px;border-top:1px solid;border-left:1px solid}.corner-tr{top:13px;right:13px;border-top:1px solid;border-right:1px solid}.corner-bl{bottom:13px;left:13px;border-bottom:1px solid;border-left:1px solid}.corner-br{bottom:13px;right:13px;border-bottom:1px solid;border-right:1px solid}.scene-hint{position:absolute;top:15px;right:18px;font-size:9px;color:#7099b9;z-index:3;pointer-events:none}.axis-label{position:absolute;z-index:2;pointer-events:none;font-size:8px;letter-spacing:1.2px;color:#4b789e}.axis-x{bottom:18px;left:20px}.axis-y{bottom:18px;right:20px}.loading-note{position:absolute;inset:0;display:grid;place-items:center;color:#9ccde8;font-size:12px;pointer-events:none;z-index:4}.loading-note.hidden{display:none}
.viewer-foot{display:flex;gap:15px;justify-content:center;flex-wrap:wrap;border-top:1px solid #3b78ad26;padding:13px 10px;color:#7797b5;font-size:9px}.legend{display:inline-block;width:7px;height:7px;border-radius:50%;margin-left:6px}.legend.red{background:#ff5c75;box-shadow:0 0 8px #ff5c75}.legend.blue{background:#399eff;box-shadow:0 0 8px #399eff}.legend.cyan{background:#48dfff;box-shadow:0 0 8px #48dfff}
.info-card{padding:21px 19px;min-width:0}.info-topline{display:flex;align-items:center;justify-content:space-between;font-size:8px;letter-spacing:1.4px;color:#5e91b7}.id-tag{font-size:9px;letter-spacing:.5px;color:var(--cyan);border:1px solid #42d6ff35;padding:5px 7px;border-radius:6px}.part-icon{width:47px;height:47px;display:grid;place-items:center;margin-top:17px;border-radius:14px;background:linear-gradient(145deg,#0c3c5b,#0b1c35);border:1px solid #41cfff3d;color:var(--cyan);font-size:25px;box-shadow:0 0 28px #00c8ff12}.part-type{font-size:8px;letter-spacing:1.5px;color:#4dcdf4;margin-top:16px}.info-card h2{font-size:23px;margin:4px 0 0}.latin{font-size:11px;color:#7e9bb8;font-style:italic;margin:0 0 13px}.description{font-size:11px;color:#a5bbd1;line-height:2.1;margin:0 0 15px}.detail-grid{border-top:1px solid #3b78ad26;border-bottom:1px solid #3b78ad26;padding:12px 0;display:grid;gap:12px}.detail-grid div{display:grid;gap:5px}.detail-grid span,.function-box span{font-size:9px;color:#6489aa}.detail-grid strong{font-size:10px;font-weight:500;color:#c7dff4;line-height:1.9}.function-box{display:flex;gap:11px;padding:14px 0}.function-icon{width:29px;height:29px;flex:0 0 29px;border-radius:9px;display:grid;place-items:center;color:var(--cyan);background:#0c3852}.function-box p,.fact-box p{font-size:10px;line-height:1.9;color:#b2c8dd;margin:5px 0 0}.fact-box{padding:12px 13px;border:1px solid #36cfff24;background:#0b2a4059;border-radius:11px}.fact-box>span{font-size:9px;color:var(--cyan)}.panel-footer{font-size:8px;line-height:1.8;color:#55728e;margin-top:13px}.source-mark{display:inline-block;width:5px;height:5px;background:#52e8c5;border-radius:50%;margin-left:5px}
.explore-section,.learn-section{max-width:1600px;margin:0 auto;padding:12px clamp(14px,3vw,48px) 36px}.section-heading{display:flex;justify-content:space-between;align-items:end;margin-bottom:16px}.section-heading h2,.learn-copy h2{font-size:23px;margin:7px 0 0}.section-heading>p{font-size:10px;color:#7896b4}.system-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.system-card{display:flex;align-items:center;gap:10px;text-align:right;padding:13px 11px;background:#0b1a2e9c;border:1px solid #2b669044;border-radius:13px;color:var(--text);font-family:inherit;cursor:pointer;transition:.22s;min-width:0}.system-card:hover{transform:translateY(-2px);border-color:#40cfff7a;background:#0c2942}.system-symbol{width:32px;height:32px;display:grid;place-items:center;border-radius:10px;font-size:17px;background:#123252;flex:0 0 32px}.blue-symbol{color:#58aaff}.cyan-symbol{color:#48e7ff}.red-symbol{color:#ff6b7f}.pink-symbol{color:#ff8bd0}.system-card span:nth-child(2){display:grid;gap:4px;flex:1;min-width:0}.system-card strong{font-size:10px}.system-card small{font-size:8px;color:#7897b6;direction:ltr;text-align:right;overflow:hidden;text-overflow:ellipsis}.system-card>b{color:#4d9fcb;font-size:13px}
.learn-section{display:grid;grid-template-columns:.8fr 1.2fr;gap:25px;align-items:center;padding-top:0}.learn-copy p{font-size:11px;line-height:2;color:#829fbd;max-width:380px}.flow-steps{display:flex;align-items:center;justify-content:center;gap:7px;flex-wrap:wrap;padding:18px;background:#0b1a2e9c;border:1px solid #2b669044;border-radius:14px}.flow-steps span:not(.flow-break){padding:8px 10px;border-radius:9px;border:1px solid #2d72924d;background:#10233a;font-size:10px}.flow-steps b{font-size:13px;color:#73bde5}.flow-steps .blue-step{color:#7ec1ff;border-color:#288aff55;background:#092a4c}.flow-steps .red-step{color:#ff9aab;border-color:#ff637d55;background:#381724}.flow-steps .flow-break{flex-basis:100%;text-align:center;color:#7d9ab8;font-size:10px;margin:4px 0}
footer{border-top:1px solid #2c5b7a2c;padding:18px clamp(14px,3vw,48px);display:flex;justify-content:space-between;gap:15px;color:#587894;font-size:9px}footer b{color:var(--cyan);padding:0 5px}
@media(max-width:1200px){.layout{grid-template-columns:minmax(190px,.72fr) minmax(340px,1.2fr)}.info-card{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;column-gap:24px}.info-topline,.part-icon,.part-type,.info-card h2,.latin,.description{grid-column:1/-1}.detail-grid{align-self:start}.function-box{align-self:start}.fact-box,.panel-footer{grid-column:1/-1}.part-icon{margin-top:12px}.system-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:760px){.topbar{padding:10px 13px;min-height:68px}.top-status{display:none}.brand strong{font-size:15px}.brand small{font-size:7px;letter-spacing:1px}.layout{padding:20px 12px;grid-template-columns:1fr;gap:13px}.intro{padding:7px 4px 0}.intro h1{font-size:35px;margin:10px 0}.intro>p{max-width:600px;font-size:12px}.quick-stats{margin-top:17px;padding-top:12px}.search-box{margin-top:18px}.control-group{margin-top:13px}#sceneWrap{height:420px}.info-card{grid-column:auto;display:block;padding:18px}.part-icon{margin-top:15px}.detail-grid{display:grid}.section-heading{display:block}.section-heading>p{line-height:1.8}.system-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}.system-card{padding:11px 8px;gap:7px}.system-symbol{width:29px;height:29px;flex-basis:29px}.system-card strong{font-size:9px}.system-card small{font-size:8px}.learn-section{grid-template-columns:1fr;gap:8px}.flow-steps{gap:5px;padding:12px}.flow-steps span:not(.flow-break){font-size:9px;padding:7px}.flow-steps b{font-size:10px}footer{flex-direction:column;line-height:1.8}.ghost-btn{font-size:10px;padding:8px 10px}}
@media(max-width:390px){.system-grid{grid-template-columns:1fr}.viewer-foot{justify-content:flex-start;padding-right:16px}.topbar{padding:9px}.brand{gap:8px}.brand-icon{width:35px;height:35px}.flow-steps span:not(.flow-break){font-size:8px;padding:6px}}

/* Phase 03: pulse controls and knowledge check */
.pulse-controls{margin-top:11px;padding:12px;border:1px solid #2e73954a;border-radius:12px;background:#07192b9c}
.pulse-control-head{display:flex;align-items:center;justify-content:space-between;gap:8px;color:#8fb6d5;font-size:10px}
.pulse-control-head strong{font-size:10px;color:var(--cyan);direction:ltr}
#bpmSlider{width:100%;margin:12px 0 1px;accent-color:#36d8ff;cursor:pointer}
.pulse-controls .wide-control{margin-top:8px}
.quiz-section{max-width:1600px;margin:0 auto;padding:0 clamp(14px,3vw,48px) 36px;position:relative;z-index:1}
.quiz-card{padding:20px;border:1px solid var(--line);border-radius:17px;background:linear-gradient(145deg,rgba(12,28,51,.87),rgba(5,15,30,.88))}
.quiz-question{font-size:14px;color:#dff4ff;margin:0 0 15px}
.quiz-options{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:9px}
.quiz-option{font-family:inherit;text-align:right;padding:12px;border-radius:10px;border:1px solid #2b669044;background:#0b1a2e;color:#b8d9f7;cursor:pointer;transition:.2s}
.quiz-option:hover:not(:disabled){border-color:var(--cyan);color:white}
.quiz-option.correct{border-color:#43f6c4;background:#0a332e;color:#8dffdc}
.quiz-option.incorrect{border-color:#ff6d83;background:#3b1725;color:#ffb2bf}
.quiz-option:disabled{cursor:default}
.quiz-feedback{font-size:11px;color:#8aa8c5;line-height:1.9;min-height:21px}
@media(max-width:760px){.quiz-options{grid-template-columns:1fr 1fr}.quiz-card{padding:14px}.quiz-question{font-size:12px}}
@media(max-width:390px){.quiz-options{grid-template-columns:1fr}}

/* CardioScope Heart Atlas refresh: fixed model, zoom-only navigation */
#sceneWrap{touch-action:pan-y;cursor:default}.scene-hint{color:#9bc6e5}.zoom-tools .tool-btn{font-size:20px}.control-group.pulse-controls{margin-top:18px}.quiz-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.quiz-meta span{font-size:10px;color:#7fa6c8}.quiz-meta .ghost-btn{white-space:nowrap}#loadingNote{line-height:2;text-align:center;padding:24px}#loadingNote small{display:block;color:#86a9c9;font-size:11px;margin-top:8px}.viewer-tools .tool-btn{width:35px;height:35px}

/* Phase 04.2 — layout repair: give the model a real, dominant workspace */
.topbar{padding-inline:clamp(18px,4vw,58px);min-height:76px}
.layout{max-width:1680px;grid-template-columns:minmax(245px,.72fr) minmax(460px,1.55fr) minmax(255px,.78fr);gap:20px;padding:28px clamp(18px,3vw,48px) 34px;align-items:start}
.intro{padding:10px 3px;min-width:0}
.intro h1{font-size:clamp(30px,2.6vw,43px);line-height:1.35;margin:13px 0}
.intro>p{max-width:38ch;font-size:12px;line-height:2.05}
.quick-stats{gap:clamp(10px,1.3vw,20px);flex-wrap:wrap}
.quick-stats strong{font-size:20px}
.viewer-card{min-width:0;align-self:stretch;border-radius:20px;box-shadow:0 24px 80px #0005,0 0 36px #008cff0a,inset 0 1px #ffffff08}
.viewer-head{height:60px;padding-inline:18px}
#sceneWrap{height:clamp(490px,58vw,720px);min-height:490px;background:radial-gradient(ellipse at 50% 45%,#0d4771a8 0%,#08244085 38%,#061326 76%);}
#sceneWrap canvas{position:absolute;inset:0;width:100%;height:100%;z-index:0}
.scanline{z-index:1}.corner{z-index:2}.scene-hint,.axis-label{z-index:3}
.loading-note{z-index:4;max-width:440px;margin:auto;padding:26px;color:#d5f4ff;text-shadow:0 2px 14px #001323;line-height:2.1}
.loading-note small{max-width:34ch;margin:8px auto 0;line-height:2;color:#a8cde8}
.viewer-foot{min-height:44px;gap:18px}
.info-card{min-width:0;padding:21px 18px;position:sticky;top:16px}
.info-card h2{font-size:clamp(20px,1.6vw,25px);line-height:1.6}
.description{font-size:12px;line-height:2.15}
.detail-grid strong{font-size:11px}
.search-box{margin-top:24px}.search-row{min-height:45px}.search-row input{font-size:12px}.search-result{font-size:11px;padding:10px}
.pulse-controls{padding:13px}.wide-control{min-height:40px}
.explore-section,.learn-section,.quiz-section{max-width:1680px}
.system-grid{grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}
.system-card{min-height:68px;padding:13px;gap:11px}.system-card strong{font-size:11px}.system-card small{font-size:9px}
.quiz-section{padding-top:0}.quiz-card{padding:24px}.quiz-question{font-size:15px;line-height:1.9}.quiz-option{font-size:12px;line-height:1.8}
@media(max-width:1320px){.layout{grid-template-columns:minmax(220px,.7fr) minmax(400px,1.3fr);}.info-card{position:static;grid-column:1/-1;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);column-gap:26px}.info-topline,.part-icon,.part-type,.info-card h2,.latin,.description,.fact-box,.panel-footer{grid-column:1/-1}.detail-grid,.function-box{align-self:start}.system-grid{grid-template-columns:repeat(4,minmax(0,1fr))}#sceneWrap{height:clamp(470px,60vw,680px)}}
@media(max-width:820px){.layout{grid-template-columns:minmax(0,1fr);padding:18px 13px 25px;gap:14px}.intro{padding:5px 3px}.intro h1{font-size:clamp(30px,7vw,42px)}.intro>p{max-width:65ch}.quick-stats{margin-top:15px}.search-box{margin-top:17px}.viewer-card{grid-row:2}.info-card{grid-column:auto;display:block;position:static}.info-topline,.part-icon,.part-type,.info-card h2,.latin,.description,.fact-box,.panel-footer{grid-column:auto}#sceneWrap{height:clamp(360px,100vw,540px);min-height:360px}.system-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.quiz-options{grid-template-columns:repeat(2,minmax(0,1fr))}.learn-section{padding-top:0}}
@media(max-width:440px){.viewer-head{padding-inline:12px}.viewer-head>div:first-child{font-size:11px}.viewer-head small{display:none}#sceneWrap{height:360px;min-height:360px}.viewer-foot{justify-content:flex-start;gap:10px;font-size:8px}.system-grid,.quiz-options{grid-template-columns:1fr}.quiz-card{padding:15px}.quiz-meta{align-items:flex-start;flex-direction:column}}

/* 3D navigation: drag to rotate the heart in three dimensions */
#sceneWrap{touch-action:none;cursor:grab}#sceneWrap:active{cursor:grabbing}#sceneWrap canvas{touch-action:none;cursor:grab}

/* Quiz difficulty label */
.quiz-question-head{display:flex;justify-content:flex-start;margin:12px 0 4px}.difficulty-badge{display:inline-flex;align-items:center;border:1px solid #3a7ebd66;background:#10213a;border-radius:999px;padding:6px 12px;font-size:11px;color:#c6e7ff}.difficulty-badge.easy{border-color:#37dba055;color:#69f0bc;background:#0b302b}.difficulty-badge.medium{border-color:#f2c14e66;color:#ffd777;background:#342a12}.difficulty-badge.hard{border-color:#ff637d77;color:#ff91a4;background:#351923}

/* Model controls and clearer quiz difficulty selector */
.model-height-control{display:flex;align-items:center;gap:12px;padding:10px 16px;border-top:1px solid var(--line);background:rgba(4,14,27,.72);color:#a8c9e8;font-size:12px}.model-height-control label{white-space:nowrap}.model-height-control input{flex:1;min-width:80px;accent-color:#19c9ff}.model-height-control span{min-width:42px;text-align:left;color:#e0f7ff;font-variant-numeric:tabular-nums}.quiz-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.quiz-actions label{font-size:11px;color:#a9c9e7}.quiz-actions select{background:#0b1a2e;color:#dff4ff;border:1px solid #2b6690;border-radius:9px;padding:8px;font-family:inherit}.quiz-question-head{margin:12px 0 8px}.difficulty-badge{font-weight:800;font-size:12px;padding:7px 14px;box-shadow:0 0 14px #0e9ed022}.difficulty-badge.easy{background:#0b302b;color:#69f0bc}.difficulty-badge.medium{background:#342a12;color:#ffd777}.difficulty-badge.hard{background:#351923;color:#ff91a4}
@media(max-width:500px){.model-height-control{gap:7px;padding:9px}.model-height-control label{font-size:10px}.quiz-actions{width:100%}.quiz-actions select{flex:1}}

/* CardioScope violet refinement — subtle lavender, restrained glow */
:root{--bg:#070916;--panel:rgba(16,17,39,.88);--line:rgba(164,133,232,.22);--cyan:#b7a0ff;--blue:#7c7ee8;--text:#f1efff;--muted:#aaa7c9;--red:#ff789b}
body{background:radial-gradient(ellipse at 50% 26%,#17152f 0%,#0b0d20 40%,#060713 78%)}
.ambient-a{background:#7861dc;opacity:.12}.ambient-b{background:#8e68d8;opacity:.10}
.brand-icon{border-color:#aa94ff55;color:#c7b8ff;box-shadow:0 0 20px #9879ff13}
.ghost-btn,.tool-btn,.layer-btn,.wide-control{background:rgba(29,28,57,.76);border-color:#8d7cc344;color:#d4ceff}
.ghost-btn:hover,.tool-btn:hover,.layer-btn:hover{border-color:#b7a0ff;color:#fff;box-shadow:0 0 14px #9b85ff16}
#sceneWrap{background:radial-gradient(ellipse at 50% 45%,#25204aa8 0%,#15152d85 38%,#090d1d 76%)}
.pulse-controls,.quiz-card{border-color:#9881d42b;background:linear-gradient(145deg,rgba(22,22,48,.87),rgba(8,10,25,.9))}
.search-row:focus-within,.glossary-search:focus-within{border-color:#b7a0ff;box-shadow:0 0 0 3px #a58cff12}
.search-row input,#glossarySearch{color:#f3efff}
.search-result{background:linear-gradient(100deg,#191832,#111426);border-color:#8c79c52a;color:#d7d0ff;border-radius:10px;margin-top:5px;transition:transform .18s,border-color .18s,background .18s}
.search-result:hover{transform:translateX(-2px);border-color:#ad98ff80;background:#201d40}
.quiz-actions select{appearance:none;min-width:142px;padding:10px 38px 10px 13px;background-color:#17162f;background-image:linear-gradient(45deg,transparent 50%,#c2b2ff 50%),linear-gradient(135deg,#c2b2ff 50%,transparent 50%);background-position:calc(100% - 18px) 50%,calc(100% - 12px) 50%;background-size:6px 6px,6px 6px;background-repeat:no-repeat;border:1px solid #8976c966;border-radius:12px;color:#eae4ff;box-shadow:inset 0 1px #ffffff08;cursor:pointer;outline:none;transition:.2s}
.quiz-actions select:hover,.quiz-actions select:focus{border-color:#b6a0ff;box-shadow:0 0 0 3px #a58cff15}
.quiz-actions select option{background:#17162f;color:#eee8ff;padding:12px;font-family:Tahoma,sans-serif}
.difficulty-badge{border-color:#9c8ad866;background:#211d3b;color:#e2d9ff;box-shadow:none}
.difficulty-badge.easy{border-color:#4cc9a466;color:#8ee9c9;background:#102c2a}.difficulty-badge.medium{border-color:#c5a65c66;color:#f0d58e;background:#302718}.difficulty-badge.hard{border-color:#df729266;color:#ffa6b8;background:#321b2a}
.feature-section{position:relative;z-index:1;max-width:1680px;margin:0 auto;padding:0 clamp(14px,3vw,48px) 32px}
.feature-card{border:1px solid var(--line);border-radius:18px;background:linear-gradient(145deg,rgba(22,22,48,.82),rgba(8,10,25,.9));box-shadow:0 18px 55px #0002,inset 0 1px #ffffff06;overflow:hidden}
.tour-card{padding:22px 24px;display:grid;grid-template-columns:minmax(120px,.55fr) minmax(0,1.8fr) auto;align-items:center;gap:22px}
.tour-progress{color:#a7a1ca;font-size:11px}.progress-track{height:5px;border-radius:99px;background:#ffffff0c;margin-top:12px;overflow:hidden}.progress-track i{display:block;width:16.6%;height:100%;background:linear-gradient(90deg,#786ee2,#c4adff);border-radius:99px;transition:width .3s}
.tour-kicker{font-size:9px;letter-spacing:2px;color:#b8a7ff}.tour-content h3{font-size:22px;margin:7px 0;color:#f1edff}.tour-content p{font-size:12px;line-height:2;color:#aaa8ca;margin:0;max-width:72ch}.tour-actions{display:flex;gap:8px;align-items:center}
.primary-btn,.soft-btn{font:inherit;border-radius:11px;padding:11px 15px;font-size:11px;cursor:pointer;transition:.2s;white-space:nowrap}.primary-btn{background:linear-gradient(120deg,#7469d6,#9181e8);border:1px solid #b8a8ff55;color:white;box-shadow:0 5px 18px #7663df20}.primary-btn:hover{filter:brightness(1.08);transform:translateY(-1px)}.soft-btn{background:#ffffff05;border:1px solid #9b8bd32d;color:#bdb5e5}.soft-btn:hover:not(:disabled){border-color:#b7a0ff;color:white}.soft-btn:disabled{opacity:.35;cursor:default}
.blood-flow-card{padding:22px}.flow-route{display:flex;align-items:center;justify-content:space-between;gap:8px}.flow-route>i{font-style:normal;color:#9c8ad9;font-size:20px}.flow-node{position:relative;display:flex;flex-direction:column;gap:5px;align-items:center;justify-content:center;min-height:98px;flex:1;min-width:0;padding:13px 8px;border:1px solid #9e8cdd2b;border-radius:13px;background:#ffffff04;text-align:center;transition:.25s}.flow-node small{font-size:9px;color:#9289b9}.flow-node b{font-size:11px;color:#e9e4ff}.flow-node span{font-size:9px;color:#928fb2;direction:ltr}.blue-node{border-color:#7298e82a}.red-node{border-color:#d18aa72b}.flow-node.flow-active{transform:translateY(-3px);border-color:#b5a0ff;box-shadow:0 0 22px #a18bff1b;background:#9e8bff0d}.blue-node.flow-active{border-color:#83a9ff;box-shadow:0 0 20px #648eff20}.red-node.flow-active{border-color:#f29bb5;box-shadow:0 0 20px #f27ba01b}.flow-simulator-footer{display:flex;align-items:center;gap:10px;margin-top:17px;padding-top:16px;border-top:1px solid #a997e51a;color:#a8a3c8;font-size:11px}.flow-simulator-footer #flowStatus{flex:1}.flow-particle{width:8px;height:8px;border-radius:50%;background:#a99aff;box-shadow:0 0 12px #a99aff66}
.cross-card{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(210px,.7fr);gap:24px;padding:24px;align-items:center}.chamber-diagram{position:relative;max-width:640px;width:100%;margin:auto;min-height:290px;display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;gap:12px;padding:14px}.chamber{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;min-height:115px;border-radius:45% 40% 34% 40%;border:1px solid #ffffff24;box-shadow:inset 0 0 30px #ffffff05;position:relative;z-index:1}.chamber b{font-size:13px;color:#f5f0ff}.chamber small{font-size:10px;color:#c3badf;direction:ltr}.right-atrium,.right-ventricle{background:linear-gradient(145deg,#1b315b,#17203d);border-color:#6c9bdb60}.left-atrium,.left-ventricle{background:linear-gradient(145deg,#5a294c,#351d3c);border-color:#db8bb860}.septum-line{position:absolute;top:14px;bottom:14px;left:50%;width:2px;background:linear-gradient(transparent,#c5b6ff88,transparent);z-index:2}.diagram-arrow{position:absolute;z-index:3;font-size:10px;padding:5px 8px;border-radius:8px;background:#0a0c1cdd}.arrow-blue{left:3px;top:46%;color:#91baff}.arrow-red{right:3px;top:46%;color:#ffabc0}.cross-notes h3{color:#e8e1ff;font-size:17px;margin:0 0 13px}.cross-notes p{font-size:12px;line-height:2;color:#a9a5c7}.blue-text{color:#91baff}.red-text{color:#ffabc0}.small-note{font-size:10px!important;color:#777899!important;border-top:1px solid #ffffff0b;padding-top:10px}
.ecg-card{padding:20px 22px}.ecg-head{display:flex;align-items:center;justify-content:space-between;color:#b4a9e0;font-size:11px}.ecg-head>div{display:flex;align-items:center;gap:9px}.ecg-head .live-dot{background:#ae9aff;box-shadow:0 0 9px #ae9aff66}#ecgCanvas{width:100%;height:150px;display:block;margin:14px 0 8px;border-radius:10px;background:linear-gradient(90deg,#0b0d20,#111129);border:1px solid #a895e61a}.ecg-controls{display:grid;grid-template-columns:auto minmax(100px,1fr) auto;align-items:center;gap:13px;color:#a9a4c8;font-size:11px}.ecg-controls input{width:100%;accent-color:#a997ff}.ecg-controls>span{color:#c6b8ff;direction:ltr}.ecg-controls p{grid-column:1/-1;font-size:10px;color:#777b9f;margin:2px 0 0;line-height:1.8}
.glossary-card{padding:18px}.glossary-search{display:flex;align-items:center;gap:11px;padding:11px 14px;border:1px solid #9483d72c;border-radius:12px;background:#0b0d20;color:#b7a5ff;transition:.2s}.glossary-search input{flex:1;min-width:0;border:0;outline:0;background:transparent;font:inherit;font-size:12px}.glossary-count{font-size:10px;color:#8582a9;white-space:nowrap}.glossary-results{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:14px}.glossary-item{display:flex;flex-direction:column;align-items:flex-start;text-align:right;gap:6px;min-width:0;padding:14px;border:1px solid #9585d51c;border-radius:12px;background:linear-gradient(145deg,#191832aa,#101225aa);color:#e9e4ff;cursor:pointer;transition:.2s}.glossary-item:hover{border-color:#a995ff75;background:#211d3c;transform:translateY(-2px)}.glossary-item b{font-size:12px}.glossary-item span{font-size:10px;color:#b6a7f0;direction:ltr}.glossary-item small{font-size:10px;line-height:1.8;color:#8f8eaf}.glossary-empty{grid-column:1/-1;text-align:center;color:#a29cbe;font-size:12px;padding:18px}
.quiz-scorebar{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-bottom:13px;padding:12px 15px;border:1px solid #9d8bdd21;border-radius:12px;background:#17162e7a;color:#aaa5c9;font-size:11px}.quiz-scorebar strong{color:#d1c3ff;font-size:14px;min-width:16px}.score-divider{color:#6e6b91;margin:0 3px}.site-footer{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;margin-top:14px;border-top:1px solid #9c89d321;padding:23px clamp(14px,4vw,58px);background:linear-gradient(180deg,#0d0e1e55,#070814aa);color:#777997;font-size:10px}.footer-brand{display:grid;grid-template-columns:auto 1fr;column-gap:10px;align-items:center}.footer-heart{grid-row:span 2;display:grid;place-items:center;width:37px;height:37px;border:1px solid #a894ff35;border-radius:12px;color:#bbaaff;font-size:24px}.footer-brand b{color:#ded7ff;font-size:13px;letter-spacing:.4px}.footer-brand small{font-size:9px;color:#8f8bb2}.footer-credit{display:flex;flex-direction:column;align-items:center;gap:4px}.footer-credit strong{font-size:17px;color:#c5b4ff;letter-spacing:.4px}.footer-credit i{font-style:normal;color:#8f7ce0}.footer-disclaimer{text-align:left;line-height:1.8}.footer-copy{grid-column:1/-1;text-align:center;border-top:1px solid #ffffff08;padding-top:12px;font-size:9px;color:#626583}
@media(max-width:900px){.tour-card{grid-template-columns:1fr;gap:12px}.tour-actions{justify-content:flex-start}.flow-route{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}.flow-route>i{display:none}.flow-node{min-height:90px}.cross-card{grid-template-columns:1fr}.glossary-results{grid-template-columns:repeat(2,minmax(0,1fr))}.site-footer{grid-template-columns:1fr 1fr}.footer-credit{align-items:flex-end}.footer-disclaimer{grid-column:1/-1;text-align:center}}
@media(max-width:520px){.feature-section{padding-inline:12px;padding-bottom:23px}.tour-card,.blood-flow-card,.cross-card,.ecg-card{padding:15px}.tour-content h3{font-size:19px}.tour-actions>*{flex:1}.flow-route{grid-template-columns:repeat(2,minmax(0,1fr))}.flow-simulator-footer{align-items:flex-start;flex-wrap:wrap}.flow-simulator-footer #flowStatus{min-width:calc(100% - 25px)}.flow-simulator-footer .primary-btn{width:100%}.chamber-diagram{min-height:245px;padding:8px;gap:8px}.chamber{min-height:100px}.chamber b{font-size:11px}.chamber small{font-size:8px}.diagram-arrow{font-size:8px;padding:4px}.ecg-controls{grid-template-columns:1fr auto;gap:9px}.ecg-controls label{grid-column:1/-1}.ecg-controls input{grid-column:1}.ecg-controls>span{grid-column:2}.glossary-results{grid-template-columns:1fr}.site-footer{grid-template-columns:1fr;justify-items:center;text-align:center}.footer-brand{justify-self:center}.footer-credit{align-items:center}.footer-disclaimer{grid-column:auto}.footer-copy{grid-column:auto;width:100%}}

/* Collapsible bilingual glossary */
.glossary-heading{align-items:center;gap:16px}.glossary-toggle{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:42px;padding:10px 15px;border:1px solid #a99aff55;border-radius:12px;background:linear-gradient(135deg,#a18aff16,#6e5bd20c);color:#d6ccff;font:inherit;font-size:12px;font-weight:600;cursor:pointer;box-shadow:inset 0 1px #ffffff08;transition:border-color .2s,background .2s,transform .2s,box-shadow .2s;white-space:nowrap}.glossary-toggle:hover{border-color:#bcaaffaa;background:linear-gradient(135deg,#a18aff25,#6e5bd218);box-shadow:0 5px 20px #8d7cff12;transform:translateY(-1px)}.glossary-toggle:focus-visible{outline:2px solid #bbaaff;outline-offset:3px}.glossary-toggle-icon{display:grid;place-items:center;width:21px;height:21px;border:1px solid #b7a5ff45;border-radius:7px;color:#c7baff;font-size:17px;line-height:1}.glossary-content{display:grid;grid-template-rows:1fr;opacity:1;transition:grid-template-rows .28s ease,opacity .22s ease,margin .22s ease;min-height:0}.glossary-content>*{min-height:0}.glossary-content.is-collapsed{grid-template-rows:0fr;opacity:0;pointer-events:none}.glossary-hint{margin:0 0 12px;color:#9994bd;font-size:12px;line-height:1.8}.glossary-content.is-collapsed{visibility:hidden}.glossary-heading .section-heading>div{min-width:0}@media(max-width:520px){.glossary-heading{align-items:flex-start;flex-direction:column}.glossary-toggle{width:100%}}


/* Blood-flow controls, references, contact, and a restrained light/day theme. */
.topbar-actions{display:flex;align-items:center;gap:8px}.theme-toggle{white-space:nowrap}
.flow-controls{display:flex;align-items:center;gap:7px}.flow-controls .primary-btn,.flow-controls .soft-btn{padding:9px 12px;font-size:10px}.flow-speed-label{white-space:nowrap;color:#a8a3c8;font-size:10px}.styled-select{font:inherit;font-size:10px;color:#d8d0ff;background:#17152e;border:1px solid #9b8bd344;border-radius:9px;padding:8px 10px;outline:none}.styled-select:focus-visible{outline:2px solid #bcaaff;outline-offset:2px}
.about-card{display:grid;grid-template-columns:1fr 1fr;gap:28px;padding:24px}.about-card h3{margin:0 0 10px;color:#e6dfff;font-size:16px}.about-card p{font-size:12px;line-height:2.1;color:#aaa6c8;margin:0 0 10px}.about-card .about-note{padding-top:10px;border-top:1px solid #9b8bd322;color:#8d89ad;font-size:10px}.reference-list{display:flex;flex-direction:column;gap:9px}.reference-list a{color:#c8baff;text-decoration:none;font-size:11px;line-height:1.8;padding:10px 12px;border:1px solid #9b8bd329;border-radius:10px;background:#9b8bd30a;transition:.2s}.reference-list a:hover{border-color:#b8a4ff88;background:#9b8bd318}.contact-link{color:#bfb0ff;text-decoration:none;font-size:10px}.contact-link:hover{text-decoration:underline}
body.day-theme{--bg:#f3f2fb;--panel:rgba(255,255,255,.92);--line:rgba(108,91,160,.2);--text:#24223b;--muted:#6d6a88;background:radial-gradient(ellipse at 50% 20%,#ffffff 0%,#f1effb 52%,#e9e8f6 100%);color:#28263f}
body.day-theme .ambient{opacity:.08}body.day-theme .topbar{background:#ffffffa8;border-bottom-color:#b5addb66}body.day-theme .top-status,body.day-theme .intro>p,body.day-theme .section-heading>p,body.day-theme .learn-copy p{color:#6d6989}body.day-theme .brand small{color:#777295}body.day-theme .ghost-btn,body.day-theme .tool-btn,body.day-theme .wide-control{color:#4c4670;background:#ffffffd9;border-color:#b6addb}body.day-theme .viewer-card,body.day-theme .info-card{background:linear-gradient(145deg,#ffffffef,#f6f4ff);box-shadow:0 18px 55px #554b8b12}body.day-theme .search-row,body.day-theme .search-result,body.day-theme .system-card,body.day-theme .flow-steps{background:#ffffffd9;border-color:#d1cbe7;color:#36314f}body.day-theme .search-row input,body.day-theme .glossary-search input{color:#302b4c}body.day-theme .system-card strong,body.day-theme .info-card h2,body.day-theme .detail-grid strong,body.day-theme .function-box p,body.day-theme .fact-box p{color:#383452}body.day-theme .system-card small,body.day-theme .detail-grid span,body.day-theme .function-box span{color:#777192}body.day-theme .fact-box{background:#eeebfa;border-color:#cfc5ee}body.day-theme .glossary-card,body.day-theme .feature-card,body.day-theme .quiz-card{background:#ffffffdf;border-color:#d5cfea;color:#302c4a}body.day-theme .glossary-search{background:#f5f2ff;border-color:#d0c7ec}body.day-theme .glossary-item{background:linear-gradient(145deg,#f8f6ff,#efedfa);color:#302b4c;border-color:#d8d1ed}body.day-theme .glossary-item small,body.day-theme .glossary-hint,body.day-theme .glossary-count{color:#716c91}body.day-theme .tour-content h3,body.day-theme .cross-notes h3,body.day-theme .chamber b{color:#302b4c}body.day-theme .tour-content p,body.day-theme .cross-notes p{color:#666181}body.day-theme .flow-node{background:#f9f7ff;border-color:#d5cee9}body.day-theme .flow-node b{color:#383352}body.day-theme .flow-node span,body.day-theme .flow-node small{color:#777092}body.day-theme .styled-select{background:#fff;color:#383352;border-color:#cfc6e8}body.day-theme .quiz-scorebar{background:#f3f0ff;color:#686284;border-color:#d8d0ed}body.day-theme .quiz-scorebar strong{color:#6350a2}body.day-theme .site-footer{background:linear-gradient(180deg,#f3f1ff,#e9e6f7);color:#77718f;border-color:#d0c8e8}body.day-theme .footer-brand b,body.day-theme .footer-credit strong{color:#51427f}body.day-theme .footer-brand small{color:#777192}body.day-theme #ecgCanvas{background:#faf9ff}body.day-theme .panel-footer{color:#777192}
@media(max-width:900px){.flow-simulator-footer{flex-wrap:wrap}.flow-controls{order:3;width:100%;flex-wrap:wrap}.flow-speed-label{margin-right:auto}.about-card{grid-template-columns:1fr;gap:18px}}
@media(max-width:520px){.topbar{flex-wrap:wrap}.topbar-actions{width:100%;justify-content:space-between}.topbar-actions .ghost-btn{flex:1}.about-card{padding:16px}.flow-controls>*{flex:1}}


/* Glossary now fully leaves the layout when hidden. */
.glossary-content.is-collapsed{display:none!important;}
/* Appearance customizer */
:root{--user-accent:#a997ff;--neon-strength:.55;--neon-glow:0 0 calc(24px * var(--neon-strength)) color-mix(in srgb,var(--user-accent) 42%,transparent)}
.appearance-bar{position:relative;z-index:2;display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin:12px clamp(14px,4vw,64px) 0;padding:13px 17px;border:1px solid color-mix(in srgb,var(--user-accent) 28%,transparent);border-radius:15px;background:color-mix(in srgb,var(--panel) 88%,transparent);box-shadow:var(--neon-glow)}
.appearance-title{display:flex;flex-direction:column;gap:4px;margin-left:auto}.appearance-title b{font-size:12px;color:var(--text)}.appearance-title span,.color-control>span,.neon-control>span{font-size:10px;color:var(--muted)}
.color-control,.neon-control{display:flex;align-items:center;gap:10px}.color-control input{width:36px;height:30px;padding:2px;border:1px solid var(--line);border-radius:8px;background:transparent;cursor:pointer}.neon-control{min-width:190px;flex-direction:column;align-items:stretch;gap:5px}.neon-control>span{display:flex;justify-content:space-between}.neon-control b{color:var(--user-accent)}.neon-control input{width:100%;accent-color:var(--user-accent);cursor:pointer}
.glossary-toggle,.glossary-toggle-icon,.brand-icon,.footer-heart{border-color:color-mix(in srgb,var(--user-accent) calc(30% + var(--neon-strength)*35%),transparent);color:var(--user-accent);box-shadow:0 0 calc(20px * var(--neon-strength)) color-mix(in srgb,var(--user-accent) 20%,transparent)}
.glossary-item:hover,.reference-list a:hover,.sources-grid a:hover{border-color:color-mix(in srgb,var(--user-accent) 65%,transparent);box-shadow:0 0 calc(22px * var(--neon-strength)) color-mix(in srgb,var(--user-accent) 16%,transparent)}
.sources-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;padding:18px}.sources-grid>a{display:flex;flex-direction:column;align-items:flex-start;gap:9px;padding:17px;border:1px solid color-mix(in srgb,var(--user-accent) 23%,transparent);border-radius:13px;background:color-mix(in srgb,var(--user-accent) 4%,transparent);text-decoration:none;transition:.2s}.sources-grid>a>span{font-size:10px;color:var(--user-accent);letter-spacing:1px}.sources-grid a b{font-size:12px;line-height:1.7;color:var(--text)}.sources-grid a small{font-size:10px;line-height:1.8;color:var(--muted);flex:1}.sources-grid a em{font-style:normal;font-size:10px;color:var(--user-accent)}.sources-note{grid-column:1/-1;margin:2px 0 0;font-size:10px;line-height:1.9;color:var(--muted)}
body.day-theme .appearance-bar{background:#ffffffdc}body.day-theme .sources-grid>a{background:#ffffffd9}body.day-theme .sources-grid a b{color:#302b4c}
@media(max-width:700px){.appearance-bar{gap:13px}.appearance-title{width:100%;margin-left:0}.neon-control{flex:1;min-width:140px}.sources-grid{grid-template-columns:1fr}.sources-note{grid-column:auto}}


/* Donation banner — isolated styles to preserve the existing interface */
.donation-section{position:relative;isolation:isolate;overflow:hidden;margin:30px auto 34px;width:min(1120px,calc(100% - 36px));padding:clamp(26px,5vw,52px) 20px;border:1px solid color-mix(in srgb,var(--user-accent) 34%,transparent);border-radius:24px;background:linear-gradient(135deg,color-mix(in srgb,var(--user-accent) 12%,#10101d),#0b1020 58%,#111029);text-align:center;box-shadow:0 18px 60px #0003}
.donation-glow{position:absolute;z-index:-1;width:300px;height:300px;left:50%;top:45%;transform:translate(-50%,-50%);border-radius:50%;background:var(--user-accent);filter:blur(115px);opacity:.16;pointer-events:none}
.donation-content{position:relative;max-width:640px;margin:auto}
.donation-eyebrow{font-size:10px;letter-spacing:2.2px;font-weight:800;color:var(--user-accent)}
.donation-section h2{margin:10px 0 8px;font-size:clamp(25px,4vw,38px);font-weight:850;color:#fff}
.donation-section p{margin:0 auto 22px;max-width:440px;font-size:14px;line-height:1.9;color:#d5d8e8}
.donation-card{max-width:390px;margin:0 auto;padding:22px 20px 18px;border:1px solid #ffffff25;border-radius:18px;background:linear-gradient(145deg,#ffffff13,#ffffff06);box-shadow:inset 0 1px #ffffff15,0 14px 36px #0002;backdrop-filter:blur(10px)}
.donation-card-label{display:flex;align-items:center;justify-content:center;gap:8px;color:#b9c2dc;font-size:12px}
.donation-bank-mark{display:inline-grid;place-items:center;width:23px;height:23px;border-radius:7px;background:color-mix(in srgb,var(--user-accent) 22%,transparent);color:var(--user-accent)}
.donation-number{display:block;margin:16px 0 13px;color:#fff;font-size:clamp(19px,4vw,25px);font-weight:800;letter-spacing:1px;white-space:nowrap;font-variant-numeric:tabular-nums}
.donation-holder{font-size:12px;color:#b9c2dc}.donation-holder strong{color:#fff;font-weight:750}
.donation-copy{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:42px;margin-top:19px;padding:0 20px;border:1px solid color-mix(in srgb,var(--user-accent) 65%,transparent);border-radius:12px;background:color-mix(in srgb,var(--user-accent) 17%,#111827);color:#fff;font:inherit;font-size:12px;font-weight:750;cursor:pointer;transition:transform .18s ease,background .18s ease,border-color .18s ease}
.donation-copy:hover{transform:translateY(-2px);background:color-mix(in srgb,var(--user-accent) 30%,#111827);border-color:var(--user-accent)}
.donation-copy:focus-visible{outline:2px solid var(--user-accent);outline-offset:3px}
.donation-thanks{display:block;margin-top:18px;font-size:11px;color:#aeb9d9}
body.day-theme .donation-section{background:linear-gradient(135deg,#f0f2ff,#fff 58%,#eef5ff);box-shadow:0 18px 60px #4a4d6a16}
body.day-theme .donation-section h2,body.day-theme .donation-number,body.day-theme .donation-holder strong{color:#25243d}
body.day-theme .donation-section p{color:#555873}
body.day-theme .donation-card{background:#ffffffa8;border-color:#d8d9ed}
body.day-theme .donation-card-label,body.day-theme .donation-holder,body.day-theme .donation-thanks{color:#666985}
body.day-theme .donation-copy{color:#282640}
@media(max-width:480px){.donation-section{width:calc(100% - 22px);padding:27px 12px;margin:22px auto}.donation-card{padding:19px 10px}.donation-number{font-size:clamp(17px,5vw,22px);letter-spacing:.5px}}