:root{--bg: #f4f6f5;--surface: #ffffff;--surface-2: #eef2f1;--text: #15201e;--muted: #5d6b68;--border: #d9e1df;--primary: #0f766e;--primary-strong: #0b5a54;--primary-soft: #d5f0ec;--accent: #f97316;--ok: #16a34a;--warn: #d97706;--bad: #dc2626;--info-bg: #e8f1fb;--info-text: #1e4b7a;--warn-bg: #fdf3e1;--warn-text: #7a4b0b;--err-bg: #fde8e8;--err-text: #8a1c1c;--ok-bg: #e5f6ea;--ok-text: #14532d;--radius: 14px;--shadow: 0 1px 2px rgb(0 0 0 / .04), 0 4px 16px rgb(0 0 0 / .05);color-scheme:light}@media(prefers-color-scheme:dark){:root{--bg: #0e1513;--surface: #16201e;--surface-2: #1d2a27;--text: #e6eeec;--muted: #93a39f;--border: #2a3a37;--primary: #2dd4bf;--primary-strong: #5eead4;--primary-soft: #133a35;--info-bg: #142636;--info-text: #a9cdf2;--warn-bg: #2e2412;--warn-text: #f4cf8f;--err-bg: #331818;--err-text: #f6b0b0;--ok-bg: #12291a;--ok-text: #a6e6bb;--shadow: none;color-scheme:dark}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}h1,h2,h3{line-height:1.2;margin:0 0 .6em}h1{font-size:clamp(1.6rem,4vw,2.3rem)}h2{font-size:1.35rem}h3{font-size:1.05rem;margin-top:1.4em}.topbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:24px;padding:10px 24px;background:color-mix(in srgb,var(--surface) 92%,transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}.brand{display:flex;align-items:center;gap:10px;font-size:1.2rem;color:var(--text);text-decoration:none;white-space:nowrap}.brand b{color:var(--primary)}.topbar nav{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}.topbar nav button{border:0;background:none;color:var(--muted);font:inherit;font-size:.95rem;padding:8px 12px;border-radius:999px;cursor:pointer;white-space:nowrap}.topbar nav button:hover{color:var(--text);background:var(--surface-2)}.topbar nav button.active{color:var(--primary-strong);background:var(--primary-soft);font-weight:600}main{max-width:1120px;margin:0 auto;padding:24px}.page{display:grid;gap:20px}.hero p{color:var(--muted);max-width:60ch;margin:0}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);min-width:0}.stepper,.tabs{display:flex;gap:8px;flex-wrap:wrap}.stepper button,.tabs button{flex:1 1 auto;border:1px solid var(--border);background:var(--surface);color:var(--muted);padding:10px 14px;border-radius:10px;font:inherit;cursor:pointer}.stepper button.active,.tabs button.active{border-color:var(--primary);color:var(--primary-strong);background:var(--primary-soft);font-weight:600}.stepper button:disabled{opacity:.5;cursor:not-allowed}.tabs{margin-bottom:20px}.grid-2,.grid-3{display:grid;gap:4px 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12px;color:var(--muted)}.segmented{display:flex;flex-wrap:wrap;background:var(--surface-2);border-radius:10px;padding:4px;gap:4px}.segmented button{flex:1 1 auto;border:0;background:transparent;color:var(--muted);font:inherit;padding:8px 12px;border-radius:8px;cursor:pointer}.segmented button.active{background:var(--surface);color:var(--text);font-weight:600;box-shadow:0 1px 3px #0000001f}.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-top:12px}.row.end{justify-content:flex-end}.row.between{justify-content:space-between}.btn{font:inherit;font-weight:600;border:1px solid var(--border);background:var(--surface);color:var(--text);padding:10px 18px;border-radius:10px;cursor:pointer}.btn:hover:not(:disabled){border-color:var(--primary)}.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}@media(prefers-color-scheme:dark){.btn.primary{color:#06201d}}.btn.primary:hover:not(:disabled){background:var(--primary-strong)}.btn.ghost{background:transparent;border-color:transparent}.btn.danger{color:var(--bad)}.btn:disabled{opacity:.5;cursor:not-allowed}.link{border:0;background:none;padding:0;color:inherit;font:inherit;text-decoration:underline;cursor:pointer;font-weight:600}.alert{padding:10px 14px;border-radius:10px;margin:8px 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circle{fill:var(--primary)}.pg-dim{stroke:#6366f1;stroke-width:2;stroke-dasharray:5 4}.pg-inseam{stroke:var(--accent);stroke-width:3}.pg-text{font-size:11px;fill:var(--muted)}.pg-accent{fill:var(--accent);font-weight:700}.steps-list{padding-left:20px;margin:0 0 12px}.steps-list li{margin-bottom:6px}.photo-result{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;margin-top:20px;align-items:start}canvas.overlay{width:100%;height:auto;max-height:70vh;object-fit:contain;border-radius:10px;background:var(--surface-2)}.confidence{display:flex;align-items:center;gap:10px;margin-bottom:12px}.meter{flex:1;height:8px;border-radius:99px;background:var(--surface-2);overflow:hidden}.meter div{height:100%}.meter .good{background:var(--ok)}.meter .mid{background:var(--warn)}.meter .bad{background:var(--bad)}.camera{margin-top:16px}.camera-view{position:relative;max-width:480px}.camera-view video{width:100%;border-radius:10px;background:#000}.camera-guide{position:absolute;inset:4% 30%;border:2px dashed rgb(255 255 255 / .6);border-radius:40% 40% 8px 8px;pointer-events:none}.countdown{position:absolute;inset:0;display:grid;place-items:center;font-size:5rem;font-weight:800;color:#fff;text-shadow:0 2px 12px rgb(0 0 0 / .6)}.type-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}.type-card{display:flex;flex-direction:column;gap:4px;text-align:left;font:inherit;color:var(--text);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px;cursor:pointer;min-width:0}.type-card.active{border-color:var(--primary);box-shadow:0 0 0 2px color-mix(in srgb,var(--primary) 35%,transparent)}.type-label{font-size:.85rem;color:var(--muted)}.type-size{font-size:1.4rem;font-weight:700}.type-sub{font-size:.85rem;color:var(--muted)}.score-bar{display:block;height:6px;border-radius:99px;background:var(--surface-2);overflow:hidden;margin-top:6px}.score-bar span{display:block;height:100%;background:var(--primary)}.score-bar.inline{display:inline-block;width:60px;vertical-align:middle;margin:0}.result-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}.eyebrow{margin:0 0 4px;color:var(--primary);font-weight:700;font-size:.8rem;text-transform:uppercase;letter-spacing:.06em}.score-badge{display:flex;align-items:baseline;gap:2px;background:var(--primary-soft);color:var(--primary-strong);border-radius:12px;padding:8px 14px}.score-badge b{font-size:1.6rem}.result-body{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:24px;align-items:start;margin-top:12px}.kv{width:100%;border-collapse:collapse}.kv th,.kv td{text-align:left;padding:8px 0;border-bottom:1px solid var(--border);vertical-align:top}.kv th{font-weight:500;color:var(--muted);padding-right:16px;width:45%}.table-wrap{overflow-x:auto}table.sizes{width:100%;border-collapse:collapse;font-size:.92rem}table.sizes th,table.sizes td{padding:8px 10px;text-align:left;border-bottom:1px solid var(--border);white-space:nowrap}table.sizes th{color:var(--muted);font-weight:500}table.sizes tr.chosen td{background:var(--primary-soft);font-weight:600}.save-row{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}.save-row input{flex:1 1 240px}.pill-row{margin:0 0 12px}.pill{display:inline-block;background:var(--primary-soft);color:var(--primary-strong);padding:6px 12px;border-radius:99px;font-size:.9rem;font-weight:600}.tips{padding-left:20px}.tips li{margin-bottom:6px}.bike-diagram{width:100%;height:auto;max-height:460px;background:var(--surface-2);border-radius:12px}.bike-diagram .ground{stroke:var(--border);stroke-width:6}.bike-diagram .wheel{fill:none;stroke:var(--muted);stroke-width:18;opacity:.55}.bike-diagram .wheel-inner{fill:none;stroke:var(--border);stroke-width:4}.bike-diagram .frame{fill:none;stroke:var(--primary);stroke-width:26;stroke-linejoin:round;stroke-linecap:round}.bike-diagram .frame.thin{stroke-width:14}.bike-diagram .fork,.bike-diagram .post,.bike-diagram .bar,.bike-diagram .crank{fill:none;stroke:var(--text);stroke-width:14;stroke-linecap:round;stroke-linejoin:round;opacity:.75}.bike-diagram .saddle{stroke:var(--text);stroke-width:22;stroke-linecap:round}.bike-diagram .chainring{fill:none;stroke:var(--muted);stroke-width:8}.bike-diagram .grip,.bike-diagram .bb{fill:var(--accent)}.bike-diagram .rider path{fill:none;stroke:var(--accent);stroke-width:44;stroke-linecap:round;stroke-linejoin:round;opacity:.55}.bike-diagram .rider .head{fill:var(--accent);opacity:.55}.bike-diagram .dim{fill:none;stroke:#6366f1;stroke-width:5;stroke-dasharray:18 12}.bike-diagram .dim-label{fill:#6366f1;font-size:42px;font-weight:600}.bike-diagram .target circle{fill:none;stroke:var(--bad);stroke-width:7}.bike-diagram .target path{stroke:var(--bad);stroke-width:5}.bike-diagram .target text{fill:var(--bad)}.metrics{display:grid;gap:14px}.metric{display:grid;gap:4px;padding:10px 12px;border-radius:10px;background:var(--surface-2);border-left:4px solid var(--border)}.metric.ok{border-left-color:var(--ok)}.metric.low,.metric.high{border-left-color:var(--warn)}.metric-head{display:flex;justify-content:space-between;gap:8px}.gauge{position:relative;height:8px;border-radius:99px;background:var(--border)}.gauge-ok{position:absolute;top:0;bottom:0;background:color-mix(in srgb,var(--ok) 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.row{margin:0}.footer{max-width:1120px;margin:0 auto;padding:8px 24px 32px;color:var(--muted);font-size:.82rem}.print-only{display:none}@media(max-width:900px){.type-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}.result-body,.photo-result{grid-template-columns:minmax(0,1fr)}.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:640px){main{padding:16px}.topbar{flex-direction:column;align-items:stretch;gap:8px;padding:10px 16px}.card{padding:16px}.grid-2,.grid-3,.photo-intro{grid-template-columns:minmax(0,1fr)}.pose-guide{max-width:160px;margin:0 auto}.kv th{width:50%}}@media print{.topbar,.stepper,.no-print,.footer,.hero,.type-grid{display:none!important}.print-only{display:block}body{background:#fff}.card{border:0;box-shadow:none;padding:0}}