:root{--ink:#14213d;--muted:#66758b;--paper:#f7f9fc;--card:#fff;--line:#d9e1ec;--accent:#315f9c;--accent2:#7652a3;--good:#2f7d5a;--warn:#b56a13;--bad:#a51c30;--cyan:#2e8594;--gold:#c49a3a}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--paper);color:var(--ink);line-height:1.55}a{color:inherit}
.container{width:min(1180px,calc(100% - 32px));margin:auto}.site-header{background:#101b32;color:#fff;border-bottom:1px solid rgba(255,255,255,.08)}.nav-shell{min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800}.brand-mark{display:grid;place-items:center;width:40px;height:40px;border-radius:10px;background:#fff;color:#a51c30;font-weight:900}.site-nav{display:flex;gap:4px;flex-wrap:wrap;justify-content:flex-end}.site-nav a{padding:8px 10px;border-radius:8px;text-decoration:none;color:#dbe5f2;font-size:13px}.site-nav a:hover{background:rgba(255,255,255,.11);color:#fff}
.hero{background:linear-gradient(135deg,#17294b,#253c68);color:#fff;padding:42px 0 38px}.hero .kicker{margin:0 0 8px;text-transform:uppercase;letter-spacing:.12em;font-size:12px;color:#c8d5e8;font-weight:800}.hero h1{margin:0 0 10px;font-size:clamp(32px,5vw,58px);line-height:1.02;letter-spacing:-.03em}.hero p{max-width:900px;margin:0;color:#dbe5f2;font-size:17px}.pills,.legend,.button-row,.choice-row{display:flex;gap:8px;flex-wrap:wrap}.pills{margin-top:18px}.pill{display:inline-flex;padding:6px 10px;border-radius:999px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.15);font-size:13px}
main{padding:28px 0 46px}.notice,.prompt,.callout,.status{border-radius:12px;padding:14px 16px}.notice{background:#eef4fb;border:1px solid #cfdef1}.prompt{background:#fff8df;border-left:5px solid var(--gold);margin-bottom:18px;font-size:17px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.card,.panel{background:var(--card);border:1px solid var(--line);border-radius:16px}.card{padding:20px}.card h2{margin:4px 0 8px;font-size:22px}.card p{margin:0 0 14px;color:#4d5d74}.card .meta{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:800}.card-link{display:inline-block;text-decoration:none;color:#fff;background:var(--accent);padding:9px 13px;border-radius:9px;font-weight:750}.activity-layout{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(300px,.75fr);gap:18px;align-items:start}.panel{padding:18px;min-width:0}.panel h2{margin:0 0 12px;font-size:20px}.panel h3{margin:20px 0 8px;font-size:16px}.controls{position:sticky;top:14px}.control{margin:0 0 14px}.control label{display:flex;justify-content:space-between;gap:12px;font-size:14px;font-weight:750;margin-bottom:6px}.control input[type=range]{width:100%}.control select,.control input[type=number],.control input[type=text],select{width:100%;font:inherit;padding:9px 10px;border:1px solid #becadd;border-radius:9px;background:#fff;color:var(--ink)}.btn{border:0;border-radius:9px;padding:10px 13px;background:var(--accent);color:#fff;font:inherit;font-weight:750;cursor:pointer}.btn.secondary{background:#e8eef6;color:var(--ink);border:1px solid #cbd6e5}.btn.good{background:var(--good)}.btn.warn{background:var(--warn)}.btn.choice{background:#fff;color:var(--ink);border:1px solid #bfcadd}.btn.choice.selected{background:var(--accent);color:#fff;border-color:var(--accent)}.canvas-wrap{width:100%;overflow:auto;border:1px solid #e2e8f0;border-radius:12px;background:#fff}canvas{display:block;width:100%;height:auto;min-width:540px}.stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:12px 0}.stat{border:1px solid var(--line);border-radius:12px;padding:12px;background:#fafcff}.stat .label{display:block;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.05em}.stat .num{display:block;font-size:25px;font-weight:850;letter-spacing:-.02em;overflow-wrap:anywhere}.callout{background:#f7f9fc;border:1px solid var(--line);margin:10px 0}.status{margin-top:12px;border:1px solid var(--line);background:#f7f9fc}.status.good{background:#edf8f1;border-color:#b7dec6}.status.warn{background:#fff8e9;border-color:#ecd19c}.status.bad{background:#fff0f1;border-color:#e5b9bf}.legend{margin:10px 0;color:#526176;font-size:13px}.legend span{display:flex;align-items:center;gap:5px}.swatch{display:inline-block;width:11px;height:11px;border-radius:3px}.reveal{margin-top:14px;border:1px solid var(--line);border-radius:12px;background:#fff}.reveal summary{cursor:pointer;padding:12px 14px;font-weight:800}.reveal-body{padding:0 14px 14px;color:#45566d}.small{font-size:13px;color:var(--muted)}.hr{height:1px;background:#e2e8f0;margin:16px 0}.bar{height:16px;border-radius:999px;background:#e8edf4;overflow:hidden}.bar>span{display:block;height:100%;border-radius:999px}.score-row{display:grid;grid-template-columns:120px 1fr 75px;gap:10px;align-items:center;margin:8px 0;font-size:14px}.footer{border-top:1px solid var(--line);padding:22px 0 35px;color:#718096;font-size:13px}.code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;background:#f2f5f9;padding:2px 5px;border-radius:5px}.slider-pair{display:grid;grid-template-columns:1fr 1fr;gap:10px}.kv{display:grid;grid-template-columns:1fr auto;gap:8px;padding:7px 0;border-bottom:1px solid #edf0f5}
@media(max-width:900px){.activity-layout{grid-template-columns:1fr}.controls{position:static}.site-nav{display:none}.grid{grid-template-columns:1fr}}@media(max-width:560px){.container{width:min(100% - 20px,1180px)}.hero{padding:30px 0}.panel,.card{padding:14px}.stat-grid,.slider-pair{grid-template-columns:1fr}.score-row{grid-template-columns:95px 1fr 58px}}