:root{color-scheme:light;--ink:#172b46;--muted:#52647b;--line:#dce5ef;--accent:#255ff0;--paper:#fff;--surface:#f4f7fb}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--surface);color:var(--ink);font:16px/1.75 system-ui,-apple-system,"Segoe UI",sans-serif}a{color:#174bbd;text-underline-offset:3px}a:hover{text-decoration-thickness:2px}a:focus-visible{outline:3px solid #e99900;outline-offset:4px}.skip{position:absolute;top:-90px;left:20px;background:#fff;padding:10px;z-index:2}.skip:focus{top:10px}.shell{max-width:1050px;margin:auto;padding:0 24px}header{background:var(--paper);border-bottom:1px solid var(--line)}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:20px;padding-bottom:20px}.brand{display:flex;align-items:center;gap:12px;font-weight:750;color:var(--ink);text-decoration:none;line-height:1.35}.mark{display:grid;place-items:center;flex-shrink:0;width:44px;height:44px;border-radius:12px;background:#eaf0ff;color:#174bbd}.brand small{display:block;font-size:12px;font-weight:500;color:var(--muted);margin-top:3px}nav{display:flex;gap:18px;flex-wrap:wrap;font-size:14px}nav a{color:var(--muted);text-decoration:none}nav a[aria-current=page]{font-weight:750;color:#174bbd}main.shell{padding-top:44px;padding-bottom:48px}.eyebrow{font-size:12px;font-weight:750;letter-spacing:.08em;text-transform:uppercase;color:#174bbd}h1{font-size:clamp(28px,4.5vw,42px);line-height:1.2;margin:12px 0 18px;letter-spacing:-.025em}h2{font-size:21px;line-height:1.4;margin:30px 0 10px}h3{font-size:17px;margin:0 0 10px}.lead{font-size:18px;max-width:720px;color:var(--muted);margin:0 0 24px}.hero,.article{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:36px}.actions{display:flex;align-items:center;flex-wrap:wrap;gap:16px;margin-top:24px}.button{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;font-size:15px;font-weight:700;padding:11px 20px;border-radius:9px}.button:hover{background:#174bbd}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:24px 0}.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px}.card p{font-size:15px;color:var(--muted);margin:0}.notice{background:#edf4ff;border:1px solid #d6e5ff;border-radius:12px;padding:20px 24px;margin-top:24px}.notice p{margin:0}.article{max-width:860px;margin:auto}.article h1{font-size:34px}.article p,.article li{max-width:75ch}.article ul,.article ol{padding-left:24px}.article li{margin:8px 0}.date{color:var(--muted);font-size:14px}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15px}th,td{text-align:left;vertical-align:top;border-bottom:1px solid var(--line);padding:12px}th{background:#f5f8fc}code{font-size:.9em;overflow-wrap:anywhere}footer{border-top:1px solid var(--line);color:var(--muted);font-size:13px;padding:24px 0 32px}.footer-inner{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}.footer-inner p{margin:0}footer a{margin-right:16px}.contact{overflow-wrap:anywhere}@media(max-width:700px){.shell{padding-left:18px;padding-right:18px}.header-inner{align-items:flex-start;flex-direction:column;gap:16px}.hero,.article{padding:24px}.grid{grid-template-columns:1fr}main.shell{padding-top:24px}.article h1{font-size:28px}nav{gap:16px}th,td{padding:10px}}