:root{--ink:#10221d;--muted:#61706a;--paper:#fffef9;--canvas:#f4f2e9;--lime:#9ad938;--line:rgba(16,34,29,.13);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--canvas);font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 8% 0,rgba(210,241,162,.42),transparent 28%),var(--canvas);line-height:1.75}a{color:inherit}.skip-link{position:fixed;z-index:10;left:16px;top:-80px;background:var(--ink);color:white;padding:10px 16px;border-radius:8px}.skip-link:focus{top:12px}.site-header{position:sticky;z-index:5;top:0;border-bottom:1px solid var(--line);background:rgba(244,242,233,.92);backdrop-filter:blur(16px)}.header-inner{max-width:1180px;min-height:68px;margin:auto;padding:0 24px;display:flex;align-items:center;gap:32px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none}.brand>span:last-child{display:flex;flex-direction:column;line-height:1.15}.brand small{margin-top:4px;font-size:9px;letter-spacing:.12em;color:var(--muted)}.brand-mark{width:29px;height:29px;display:grid;grid-template-columns:1fr 1fr;gap:3px;transform:rotate(-8deg)}.brand-mark i{border-radius:4px;background:var(--ink)}.brand-mark i:last-child{background:var(--lime)}nav{display:flex;gap:22px;margin-left:auto}nav a,footer a{font-size:14px;text-decoration:none}.store-link{padding:8px 16px;border-radius:999px;background:var(--ink);color:white;text-decoration:none;font-size:14px}.page-shell{max-width:1180px;margin:auto;padding:32px 24px 80px}.breadcrumb{display:flex;gap:8px;flex-wrap:wrap;padding:0;margin:0 0 48px;list-style:none;color:var(--muted);font-size:13px}.breadcrumb li{display:flex;gap:8px}.breadcrumb a{text-decoration:none}.hero{max-width:900px;padding-bottom:52px}.eyebrow{margin:0 0 14px;color:#557d1a;font-size:12px;font-weight:750;letter-spacing:.12em;text-transform:uppercase}.hero h1{max-width:850px;margin:0;font-size:clamp(38px,6vw,72px);line-height:1.08;letter-spacing:-.055em}.summary{max-width:830px;margin:26px 0 18px;font-size:clamp(17px,2vw,21px);line-height:1.8;color:#35443f}.meta{display:flex;gap:18px;flex-wrap:wrap;color:var(--muted);font-size:13px}.content-layout{display:grid;grid-template-columns:220px minmax(0,760px);gap:64px;align-items:start}.toc{position:sticky;top:100px;display:flex;flex-direction:column;border-left:2px solid var(--line);padding-left:18px}.toc strong{margin-bottom:8px;font-size:13px}.toc a{padding:5px 0;color:var(--muted);font-size:13px;text-decoration:none}.content-section{padding:0 0 48px;scroll-margin-top:100px}.content-section h2,.related h2{margin:0 0 20px;font-size:clamp(25px,3vw,36px);line-height:1.25;letter-spacing:-.035em}.content-section p{margin:0 0 16px;color:#35443f}.content-section ul{padding-left:22px}.content-section li{margin-bottom:10px}.steps{padding:0;list-style:none}.steps li{display:grid;grid-template-columns:38px 1fr;gap:14px;margin:0;padding:18px 0;border-bottom:1px solid var(--line)}.steps strong{display:block;margin-bottom:4px}.steps p{margin:0}.step-number{width:32px;height:32px;display:grid;place-items:center;border-radius:50%;background:var(--lime);font-weight:800}.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:var(--paper)}table{width:100%;border-collapse:collapse;font-size:14px}th,td{padding:13px 15px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}th{background:#eaf2dc;font-weight:700}tbody tr:last-child td{border-bottom:0}.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}.content-card{display:flex;flex-direction:column;min-height:180px;padding:22px;border:1px solid var(--line);border-radius:16px;background:var(--paper);text-decoration:none}.content-card strong{font-size:19px}.content-card span{margin-top:8px;color:var(--muted)}.content-card em{margin-top:auto;padding-top:20px;color:#557d1a;font-style:normal;font-weight:700}.faq-list details{border-top:1px solid var(--line);padding:17px 0}.faq-list details:last-child{border-bottom:1px solid var(--line)}.faq-list summary{cursor:pointer;font-weight:700}.faq-list p{margin:10px 0 0}.notice{max-width:1044px;margin:20px 0 60px;padding:22px 24px;border-left:4px solid var(--lime);background:#eaf2dc}.notice p{margin:6px 0 0;color:#35443f}.related{padding:42px;border-radius:22px;background:var(--ink);color:white}.related>div{display:flex;gap:10px;flex-wrap:wrap}.related-link{padding:10px 15px;border:1px solid rgba(255,255,255,.23);border-radius:999px;text-decoration:none;font-size:14px}.related .eyebrow{color:var(--lime)}footer{display:grid;grid-template-columns:1fr auto;gap:22px;max-width:1180px;margin:auto;padding:50px 24px;color:var(--muted);border-top:1px solid var(--line)}footer>div{display:flex;gap:18px;flex-wrap:wrap}footer strong{color:var(--ink)}footer small{grid-column:1/-1}@media(max-width:760px){.header-inner{gap:14px}.brand small,nav{display:none}.store-link{margin-left:auto}.page-shell{padding-top:24px}.breadcrumb{margin-bottom:34px}.content-layout{grid-template-columns:1fr}.toc{position:static;border-left:0;border-bottom:1px solid var(--line);padding:0 0 18px}.related{padding:28px 22px}footer{grid-template-columns:1fr}.hero h1{font-size:40px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}