:root{--bg: #f8fafc;--panel: #ffffff;--panel-strong: #f1f5f9;--text: #0f172a;--muted: #64748b;--line: #dbe4ef;--brand: #0ea5e9;--brand-dark: #0369a1;--accent: #facc15;--success: #047857;--success-bg: #ecfdf5;--error: #be123c;--error-bg: #fff1f2;--radius: 18px;--shadow: 0 20px 60px rgba(15, 23, 42, .08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at top left,#e0f2fe 0,transparent 32rem),var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.6}a{color:var(--brand-dark);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;height:auto}.site-header,.site-footer{max-width:1200px;margin:0 auto;padding:22px 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12px}h1,h2,h3{line-height:1.08;margin:0 0 14px}h1{font-size:clamp(2.4rem,6vw,5.2rem)}h2{font-size:clamp(1.65rem,3vw,2.5rem)}h3{font-size:1.1rem}.lede{font-size:clamp(1.05rem,1.8vw,1.28rem);color:var(--muted);max-width:780px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}.button{appearance:none;border:0;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:42px;padding:10px 16px;border-radius:999px;background:var(--text);color:#fff;font-weight:800;cursor:pointer;box-shadow:0 12px 24px #0f172a1f}.button:hover{text-decoration:none}.button.ghost{background:var(--panel);color:var(--text);border:1px solid var(--line);box-shadow:none}.button.small{min-height:34px;padding:8px 12px;font-size:13px}.page-shell{max-width:1180px;margin:0 auto;padding:0 24px}.page-shell.narrow{max-width:900px}.section-grid,.card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-bottom:64px}.feature-card,.content-card,.related-card,.notice-card,.csv-card,.control-card,.sample-card{background:#ffffffe6;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.feature-card,.content-card{padding:22px;color:var(--text)}.feature-card:hover,.content-card:hover{text-decoration:none;transform:translateY(-2px);transition:.2s ease}.feature-card span{display:inline-flex;color:var(--brand-dark);font-weight:900;margin-bottom:12px}.feature-card p,.content-card p{color:var(--muted);margin-bottom:0}.split-section{display:grid;grid-template-columns:.9fr 1.1fr;gap:32px;align-items:start;margin-bottom:64px}.split-section.compact{margin:52px 0}.steps-list{display:grid;gap:12px}.steps-list>div{padding:18px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius)}.tool-hero{display:flex;align-items:center;justify-content:space-between;gap:24px;margin:30px 0}.race-tool-shell{display:grid;grid-template-columns:minmax(0,1fr) 390px;gap:18px;align-items:start}.race-tool-main,.race-tool-controls{display:grid;gap:14px}.race-preview-card{background:var(--panel);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);overflow:hidden}.race-preview-card svg{display:block;width:100%;height:auto;min-height:330px}.svg-panel{fill:#fff}.svg-title{font-weight:900;font-size:24px;fill:var(--text)}.svg-date{font-weight:900;font-size:42px;fill:#0f172a24}.svg-rank{font-size:13px;font-weight:800;fill:var(--muted)}.svg-label{font-size:15px;font-weight:800;fill:var(--text)}.svg-value{font-size:14px;font-weight:800;fill:var(--muted)}.svg-bar{filter:drop-shadow(0 8px 10px rgba(15,23,42,.12));transition:width .35s 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