:root{color-scheme:light;--ink:#14243a;--muted:#596b80;--blue:#176bd1;--line:#dce6f0;--wash:#f4f8fc}*{box-sizing:border-box}body{margin:0;background:#f7f9fc;color:var(--ink);font:16px/1.75 Inter,system-ui,-apple-system,Segoe UI,sans-serif}a{color:var(--blue);text-underline-offset:3px}.site-head{background:#081326;color:#fff;padding:17px 22px}.head-inner,.wrap{width:min(100% - 36px,900px);margin:auto}.brand{font-weight:900;letter-spacing:.04em;color:#fff;text-decoration:none}.brand span{color:#5bd7e5}.crumb{margin:26px 0 10px;color:#748399;font-size:13px}.crumb a{color:#536a84}.hero{padding:32px 0 24px}.eyebrow{font-size:11px;font-weight:800;letter-spacing:.14em;color:#087f91}.hero h1{font-size:clamp(32px,6vw,48px);line-height:1.12;letter-spacing:-1.6px;margin:10px 0 14px}.lede{font-size:18px;color:#53677d;max-width:760px}.meta{font-size:12px;color:#748399}.cta{display:inline-flex;margin:12px 0 4px;padding:12px 18px;border-radius:9px;background:#176bd1;color:#fff;text-decoration:none;font-weight:800}.toc,.note,.tool-card{padding:18px 20px;margin:22px 0;border:1px solid var(--line);border-radius:14px;background:#fff}.toc h2,.note h2{font-size:17px;margin:0 0 8px}.toc ul{margin:0;padding-left:20px}.article{padding:8px 0 35px}.article h2{font-size:25px;line-height:1.25;margin:32px 0 10px;letter-spacing:-.5px}.article h3{font-size:18px;margin:22px 0 6px}.article p,.article li{color:#465b72}.article li{margin:6px 0}.article table{width:100%;border-collapse:collapse;background:#fff;margin:16px 0}.article th,.article td{padding:11px;border:1px solid var(--line);text-align:left;vertical-align:top}.article th{background:#eef4fa}.tool-card{background:linear-gradient(120deg,#10253c,#102d42);color:#fff}.tool-card p{color:#d1deeb}.tool-card a{color:#7ce2e6;font-weight:800}.guide-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:25px 0 45px}.guide-card{display:block;padding:20px;border:1px solid var(--line);border-radius:14px;background:#fff;text-decoration:none;color:var(--ink)}.guide-card h2{margin:0 0 8px;font-size:19px}.guide-card p{margin:0;color:var(--muted);font-size:14px}.site-foot{margin-top:30px;padding:24px 0;background:#081326;color:#bdcad9;font-size:13px}.site-foot a{color:#8ce5eb}.site-foot .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}@media(max-width:620px){.guide-grid{grid-template-columns:1fr}.lede{font-size:16px}.article h2{font-size:22px}.article table{font-size:13px}.article th,.article td{padding:8px}.hero{padding-top:24px}}