@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Space+Grotesk:wght@500;600;700&display=swap');
:root{font-family:'DM Sans',system-ui,sans-serif;color:#142b42;background:#e8eff4;font-size:16px;--blue:#1557cb;--ink:#142b42;--line:#d4e0e9;--red:#be3d4e;--orange:#9e5b00;--green:#087867}*{box-sizing:border-box}body{margin:0}button,select,input{font:inherit}button,select{min-height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);padding:9px 12px;cursor:pointer}button:hover{background:#edf4ff}button:focus-visible,select:focus-visible,input:focus-visible,a:focus-visible{outline:3px solid #e19520;outline-offset:2px}button.active,button.primary{background:var(--ink);color:white;border-color:var(--ink)}button:disabled{opacity:.55;cursor:default}#app{max-width:1440px;margin:auto;min-height:100dvh;display:flex;flex-direction:column}header{display:flex;align-items:center;gap:13px;padding:21px 30px 16px;background:white}.brand{display:grid;place-items:center;position:relative;width:46px;height:46px;background:var(--blue);color:white;border-radius:13px;font-weight:800;font-size:26px;text-decoration:none}.brand span{font-size:13px;position:absolute;right:6px;bottom:4px}.eyebrow{font-size:12px;font-weight:800;letter-spacing:1.7px;color:#557084;text-transform:uppercase}h1,h2,h3{font-family:'Space Grotesk',system-ui,sans-serif}h1{font-size:25px;margin:2px 0 0;letter-spacing:-.8px}#language{margin-left:auto}nav{display:flex;gap:6px;padding:0 30px 14px;background:white;flex-wrap:wrap}nav button{border:0;background:transparent;font-weight:600}nav button.active{background:#e6efff;color:#174da3}main{flex:1;min-width:0;padding:22px 30px}footer{display:flex;justify-content:space-between;gap:10px;padding:12px 30px;color:#526677;font-size:13px}.workspace{display:grid;grid-template-columns:250px minmax(280px,1fr) 290px;gap:18px;align-items:stretch}.panel{background:white;border:1px solid #d9e4ed;border-radius:18px;overflow:hidden}.picker{padding:18px}.kicker{font-size:12px;text-transform:uppercase;letter-spacing:1.6px;color:#526b7f;font-weight:800}h2{font-size:22px;line-height:1.15;margin:8px 0 14px}h3{font-size:18px;margin:8px 0}p{line-height:1.55;margin:8px 0}.search{display:block;width:100%;min-height:44px;padding:10px;border:1px solid var(--line);border-radius:9px;margin-bottom:9px}.exercise-list{display:grid;gap:5px;max-height:480px;overflow:auto}.exercise-list button{text-align:left;border:0;padding:10px 11px;font-weight:600;font-size:14px}.exercise-list small{display:block;font-size:12px;font-weight:400;margin-top:3px;opacity:.8}.mobile-pick{display:none}.stage{display:flex;flex-direction:column}.stage-top{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;padding:20px 22px 0}.stage-top h2{margin:5px 0}.tag{display:inline-block;background:#eef3f8;color:#486074;padding:5px 8px;border-radius:6px;font-size:12px}.canvas-wrap{position:relative;flex:1;min-height:260px;background:linear-gradient(#fff,#f3f7fa)}#figure{width:100%;height:320px;display:block}.legend{display:flex;justify-content:center;gap:13px;font-size:12px;padding:7px}.legend i{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:4px}.phase-bar{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;padding:12px 16px 0}.phase-bar button{font-size:13px;padding:9px 3px}.phase-bar button.active{background:var(--phase);border-color:var(--phase);color:white}.phase-readout{padding:10px 20px;min-height:77px}.phase-readout strong{font-size:18px;color:var(--phase)}.phase-readout p{font-size:14px;line-height:1.35}.timeline{width:calc(100% - 40px);margin:0 20px;accent-color:var(--phase)}.controls{display:flex;gap:8px;padding:12px 20px 18px;align-items:center}.controls button:first-child{flex:1}.controls select{max-width:90px}.details{padding:20px}.muscle-title{color:var(--red);font-size:22px;font-weight:700;margin:8px 0}.chip{display:inline-block;font-size:13px;padding:6px 8px;margin:3px 3px 0 0;background:#e8f0fc;border-radius:7px}.detail-block{border-top:1px solid var(--line);margin-top:18px;padding-top:12px}.detail-block p{font-size:14px}.note{background:#f2f6fb;border-radius:10px;padding:12px;color:#3c5266;font-size:13px;line-height:1.5;margin-top:16px}.reading{max-width:1000px;margin:auto}.intro{display:flex;align-items:end;justify-content:space-between;gap:12px;margin-bottom:18px}.intro h2{font-size:29px;margin-bottom:4px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{padding:23px}.card .number{font-family:'Space Grotesk',sans-serif;color:var(--blue);font-size:35px}.card p{color:#40566a}.wide{grid-column:1/-1}.glossary{display:grid;grid-template-columns:1fr 1fr;gap:14px}.quiz{max-width:690px;margin:auto;padding:28px}.quiz h2{font-size:25px}.answers{display:grid;gap:10px;margin:22px 0}.answers button{text-align:left;padding:15px}.answers button.correct{background:#dff5ea;border-color:#087867;color:#075d50}.answers button.wrong{background:#fff0ef;border-color:#ba3c49}.feedback{padding:16px;border-radius:10px;background:#eef3fa;margin-bottom:15px;line-height:1.5}.quiz-progress{height:5px;background:#e4ecf2;border-radius:5px;margin-bottom:24px}.quiz-progress div{height:100%;background:var(--blue);border-radius:5px}.atlas{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.atlas button{text-align:left;background:white;padding:18px;border-radius:14px}.atlas button strong{display:block;font-size:18px;color:var(--red)}.atlas button span{display:block;font-size:14px;margin-top:7px}a{color:#1655b0}summary{cursor:pointer;font-weight:700;min-height:44px;padding-top:10px}details p{font-size:15px}#empty{padding:16px;font-size:14px}.source{overflow-wrap:anywhere}
@media(min-width:1100px) and (min-height:820px){#figure{height:390px}.exercise-list{max-height:560px}}
@media(max-width:1100px){.workspace{grid-template-columns:210px minmax(280px,1fr)}.details{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}.details .detail-block{border:0;margin:0;padding:0}.details .note{display:none}}
@media(max-width:700px){header{padding:12px 14px 8px;gap:9px}.brand{width:36px;height:36px;font-size:23px;border-radius:10px}.eyebrow{font-size:10px;letter-spacing:1px}h1{font-size:19px;letter-spacing:-.5px}#language{padding:4px;min-height:38px;width:54px}nav{padding:3px 10px 9px;display:grid;grid-template-columns:repeat(4,1fr);gap:2px}nav button{font-size:12px;min-height:34px;padding:6px 2px;border-radius:7px}main{padding:10px}.workspace{display:block}.picker{display:none}.mobile-pick{display:flex;gap:7px;margin-bottom:8px}.mobile-pick select{width:100%;min-width:0;font-size:14px}.stage{border-radius:14px}.stage-top{padding:11px 14px 0}.stage-top h2{font-size:18px}.stage-top .kicker{font-size:10px}.stage-top .tag{font-size:10px}.canvas-wrap{min-height:0}#figure{height:clamp(155px,29dvh,275px)}.legend{font-size:10px;padding:3px;gap:9px}.phase-bar{padding:7px 9px 0;gap:3px}.phase-bar button{font-size:11px;min-height:36px;padding:6px 1px}.phase-readout{padding:7px 12px;min-height:62px}.phase-readout strong{font-size:16px}.phase-readout p{font-size:13px;margin:4px 0}.controls{padding:7px 12px 11px;gap:6px}.controls button,.controls select{font-size:13px;min-height:38px}.timeline{width:calc(100% - 24px);margin:0 12px}.details{display:none}footer{padding:6px 13px;font-size:10px}.grid,.glossary,.atlas{grid-template-columns:1fr}.reading{max-height:calc(100dvh - 192px);overflow:auto;padding-bottom:8px}.intro{display:block}.intro h2{font-size:24px}.card{padding:19px}.card .number{font-size:27px}.quiz{padding:20px;max-height:calc(100dvh - 192px);overflow:auto}.quiz h2{font-size:21px}.answers{margin:15px 0}.atlas{grid-template-columns:1fr 1fr}.atlas button{padding:12px}.atlas button strong{font-size:16px}.atlas button span{font-size:13px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto}}