:root{--ink:#1d1d1f;--muted:#6e6e73;--line:#d2d2d7;--bg:#fff;--soft:#f5f5f7;--blue:#0071e3;--max:1040px}
*{box-sizing:border-box} html{scroll-behavior:smooth} body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.5}
a{color:var(--blue);text-decoration:none} a:hover{text-decoration:underline}
nav{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.88);backdrop-filter:saturate(180%) blur(18px);border-bottom:1px solid rgba(0,0,0,.08)}
.nav{max-width:var(--max);margin:auto;padding:12px 22px;display:flex;align-items:center;gap:22px}.brand{font-weight:650;margin-right:auto;color:var(--ink)}.nav a{font-size:14px;color:var(--ink)}
main{max-width:var(--max);margin:auto;padding:0 22px 70px}.hero{text-align:center;padding:92px 0 72px}.eyebrow{font-size:18px;font-weight:600}.hero h1{font-size:clamp(44px,7vw,76px);line-height:1.02;letter-spacing:-.045em;margin:8px 0 18px}.hero p{font-size:22px;color:var(--muted);max-width:720px;margin:auto}
.section{padding:68px 0;border-top:1px solid var(--line)}.section h2{font-size:38px;letter-spacing:-.03em;margin:0 0 10px}.lead{font-size:20px;color:var(--muted);max-width:760px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:30px}.card{background:var(--soft);border-radius:24px;padding:28px;min-height:245px;display:flex;flex-direction:column}.icon{width:54px;height:54px;border-radius:13px;background:linear-gradient(145deg,#4d9cff,#1769d2);display:grid;place-items:center;color:white;font-weight:800;font-size:23px;margin-bottom:24px}.card h3{font-size:23px;margin:0 0 8px}.card p{color:var(--muted);margin:0 0 20px}.card a{margin-top:auto;font-weight:550}
.helpgrid{display:grid;grid-template-columns:240px 1fr;gap:44px;margin-top:32px}.toc{position:sticky;top:70px;align-self:start}.toc a{display:block;padding:7px 0;color:var(--muted);font-size:14px}.article h3{font-size:26px;margin:34px 0 8px}.article h3:first-child{margin-top:0}.article p,.article li{color:#424245}.article ol,.article ul{padding-left:22px}
.notice{background:var(--soft);border-radius:18px;padding:20px 22px;margin:22px 0}.legal{max-width:780px}.legal h3{margin-top:34px}.small{font-size:13px;color:var(--muted)}
footer{border-top:1px solid var(--line);background:var(--soft)}.footer{max-width:var(--max);margin:auto;padding:28px 22px 38px;display:flex;gap:20px;flex-wrap:wrap;color:var(--muted);font-size:13px}.footer span{margin-right:auto}
@media(max-width:780px){.nav a.hide-sm{display:none}.hero{padding:68px 0 54px}.cards{grid-template-columns:1fr}.helpgrid{grid-template-columns:1fr}.toc{position:static;display:none}.section{padding:52px 0}.hero p{font-size:19px}.section h2{font-size:32px}}