:root{color-scheme:light;--ink:#20252a;--muted:#5b6670;--line:#d9e0e7;--soft:#f6f8fa;--card:#fff;--accent:#1967d2;--accent2:#111827;--warn:#fff8e8}*{box-sizing:border-box}html{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.75;color:var(--ink);background:#fff}body{margin:0}.site-header{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px clamp(16px,4vw,44px);background:rgba(255,255,255,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;text-decoration:none}.brand-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:8px;background:linear-gradient(135deg,#1967d2,#111827);color:#fff;font-size:14px;letter-spacing:0}.site-header nav,.site-footer nav{display:flex;flex-wrap:wrap;gap:10px}.site-header a,.site-footer a{color:var(--muted);text-decoration:none;font-size:14px}.site-header a:hover,.site-footer a:hover{color:var(--accent)}main{width:min(1120px,100%);margin:0 auto;padding:clamp(22px,4vw,52px) clamp(16px,4vw,36px)}section{margin:0 0 34px}.hero,.lead{padding:clamp(28px,6vw,72px) 0 18px}.eyebrow{margin:0 0 10px;color:var(--accent);font-weight:800;font-size:14px}h1{font-size:clamp(32px,6vw,58px);line-height:1.15;margin:0 0 18px;letter-spacing:0}h2{font-size:clamp(22px,3vw,30px);line-height:1.32;margin:0 0 14px;letter-spacing:0}h3{font-size:18px;line-height:1.35;margin:0 0 8px;letter-spacing:0}p{margin:0 0 12px}.hero>p,.lead>p{font-size:18px;max-width:820px}.notice,.panel{border:1px solid var(--line);border-radius:8px;background:var(--soft);padding:18px}.notice{margin-top:22px;color:var(--muted)}.warning{background:var(--warn);border-color:#ead39d}.grid{display:grid;gap:16px}.two{grid-template-columns:repeat(2,minmax(0,1fr))}.grid>div{border:1px solid var(--line);border-radius:8px;padding:18px;background:var(--card)}.step-flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.step-flow div{border:1px solid var(--line);border-radius:8px;background:#fff;padding:16px}.step-flow strong,.step-flow span{display:block}.step-flow span{color:var(--muted);font-size:14px}.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.card{display:block;text-decoration:none;color:var(--ink);border:1px solid var(--line);border-radius:8px;padding:18px;background:#fff;min-height:140px}.card:hover{border-color:var(--accent);box-shadow:0 8px 24px rgba(25,103,210,.1)}.card strong{display:block;font-size:18px;margin-bottom:8px}.card span{display:block;color:var(--muted);font-size:14px}.check-list li{margin-bottom:6px}.link-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 18px;padding-left:20px}.link-list a{color:var(--accent)}.faq details{border:1px solid var(--line);border-radius:8px;background:#fff;padding:14px 16px;margin-bottom:10px}.faq summary{cursor:pointer;font-weight:700}.site-footer{margin-top:30px;padding:28px clamp(16px,4vw,44px);border-top:1px solid var(--line);background:#f6f8fa;color:var(--muted)}.site-footer p{max-width:980px}@media (max-width:760px){.site-header{position:static;align-items:flex-start;flex-direction:column}.two,.card-grid,.link-list,.step-flow{grid-template-columns:1fr}.card{min-height:auto}main{padding-top:22px}h1{font-size:34px}}