:root{--ink:#121829;--muted:#59627a;--paper:#f3f1eb;--panel:#fffef9;--line:#cfd1d8;--accent:#dc4f39;--electric:#4e6fff;--soft:#e8ecff;--ok:#dff2e7;--warn:#fff0cc;--short:#f8ded9;--shadow:0 18px 60px rgba(18,24,41,.12)}*{box-sizing:border-box}html{background:var(--paper);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.55}body{margin:0;background:radial-gradient(circle at 90% 0,rgba(78,111,255,.13),transparent 34rem),linear-gradient(90deg,rgba(18,24,41,.028) 1px,transparent 1px),var(--paper);background-size:auto,28px 28px}a{color:var(--electric);text-underline-offset:3px}.site-head{max-width:1240px;margin:auto;padding:22px clamp(18px,4vw,48px);display:flex;justify-content:space-between;align-items:center;gap:24px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:baseline;gap:10px;color:var(--ink);text-decoration:none}.brand span{font-size:1.35rem;font-weight:900;letter-spacing:-.04em}.brand small{color:var(--muted);font-size:.64rem;text-transform:uppercase;letter-spacing:.14em}nav{display:flex;gap:16px;flex-wrap:wrap}nav a{color:var(--ink);font-size:.82rem;font-weight:800;text-decoration:none}main{max-width:1180px;margin:auto;padding:48px clamp(18px,4vw,48px) 88px}h1{font-size:clamp(2.45rem,6vw,5.6rem);line-height:.94;letter-spacing:-.06em;max-width:1080px;margin:12px 0 24px}h2{font-size:clamp(1.45rem,3vw,2.25rem);line-height:1.08;letter-spacing:-.035em;margin:46px 0 16px}h3{line-height:1.2}.eyebrow{margin:0;text-transform:uppercase;letter-spacing:.16em;font-size:.7rem;font-weight:900;color:var(--accent)}.lead{font-size:clamp(1.04rem,2vw,1.28rem);color:#45506b;max-width:900px}.panel{background:#fffef9f7;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:clamp(20px,4vw,38px);margin:32px 0}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.card{background:#fffef9d1;border:1px solid var(--line);border-radius:11px;padding:20px}.card strong{display:block;margin-bottom:7px}.pill{display:inline-flex;background:var(--ink);color:#fff;padding:6px 10px;border-radius:999px;font-size:.7rem;font-weight:850}.note,.fine{color:var(--muted)}.fine{font-size:.82rem}.section-bar{display:flex;justify-content:space-between;align-items:flex-start;gap:20px}.section-bar h2{margin:0}.worksheet textarea{width:100%;min-height:240px;resize:vertical;border:1px solid #aeb3c1;border-radius:10px;padding:14px;background:#fafbff;color:var(--ink);font:500 .82rem/1.55 ui-monospace,SFMono-Regular,Menlo,monospace;tab-size:2}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}button,.cta{border:0;border-radius:9px;padding:12px 17px;font:800 .9rem/1 ui-sans-serif,system-ui;cursor:pointer;text-decoration:none}.primary{background:var(--electric);color:#fff}.secondary{background:#e3e6ed;color:var(--ink)}.result{margin-top:22px;padding:20px;border:1px solid var(--line);border-radius:11px;background:#f8f9ff;overflow:auto}.result.ok{background:var(--ok)}.result.warn{background:var(--warn)}.result.short{background:var(--short)}.metric-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:14px 0}.metric{background:#ffffffb8;border:1px solid rgba(18,24,41,.12);border-radius:9px;padding:13px}.metric span{display:block;color:var(--muted);font-size:.72rem;text-transform:uppercase;letter-spacing:.08em}.metric strong{display:block;font-size:1.2rem;margin-top:3px}table{width:100%;border-collapse:collapse;font-size:.82rem;min-width:720px}th,td{text-align:left;vertical-align:top;border-bottom:1px solid rgba(18,24,41,.13);padding:9px 8px}th{font-size:.69rem;text-transform:uppercase;letter-spacing:.07em;color:var(--muted)}code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.86em;overflow-wrap:anywhere}.callout{border-left:4px solid var(--accent);padding:2px 0 2px 18px;margin:24px 0;color:#46516c}footer{max-width:1080px;margin:auto;border-top:1px solid var(--line);padding:28px clamp(18px,4vw,48px) 48px;display:flex;justify-content:space-between;gap:24px;color:var(--muted);font-size:.82rem}@media (max-width:820px){.site-head{align-items:flex-start;flex-direction:column}.brand{align-items:flex-start;flex-direction:column;gap:1px}.grid,.metric-grid{grid-template-columns:1fr}.section-bar{flex-direction:column}main{padding-top:30px}footer{flex-direction:column}}