:root{--canvas:#f7f8fa;--surface:#fff;--ink:#172033;--muted:#667085;--line:#e4e7ec;--primary:#3157d5;--primary-soft:#eef2ff;--warning:#a15c00;--code:#111827;--radius:10px}
*{box-sizing:border-box}body{margin:0;background:var(--canvas);color:var(--ink);font:16px/1.65 Inter,"PingFang SC","Microsoft YaHei",sans-serif}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}button,input,select{font:inherit;min-height:44px}button,.button{border:1px solid transparent;border-radius:6px;padding:0 16px;display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;font-weight:600;text-decoration:none}.button-primary{background:var(--primary);color:#fff}.button-secondary{background:var(--surface);border-color:var(--line);color:var(--ink)}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:16px;top:16px;z-index:10;background:#fff;padding:8px 12px}:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.shell{width:min(1200px,calc(100% - 64px));margin:0 auto}.site-header{background:var(--surface);border-bottom:1px solid var(--line)}.header-inner{min-height:64px;display:flex;align-items:center;gap:32px}.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;white-space:nowrap}.brand:hover{text-decoration:none}.brand-mark{display:grid;place-items:center;width:32px;height:32px;border-radius:9px;color:#fff;background:var(--primary);font-size:12px}.site-nav{display:flex;gap:6px;margin-left:auto}.site-nav a{color:var(--muted);padding:10px 12px;border-bottom:2px solid transparent}.site-nav a[aria-current=page]{color:var(--primary);border-color:var(--primary)}.menu-button{display:none;margin-left:auto;background:var(--surface);border-color:var(--line)}
main{min-height:calc(100vh - 129px)}.page{padding:56px 0 72px}.narrow{max-width:760px}.hero{padding:72px 0 64px}.eyebrow{color:var(--primary);font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}h1,h2,h3{line-height:1.25;margin:0 0 16px}h1{font-size:clamp(32px,5vw,48px);letter-spacing:-.03em}h2{font-size:28px}h3{font-size:18px}p{margin:0 0 16px;color:var(--muted)}.hero-copy{max-width:700px}.hero-copy p{font-size:19px;max-width:620px}.hero-form{display:flex;gap:10px;margin-top:28px;max-width:720px}input,select{width:100%;border:1px solid var(--line);background:var(--surface);border-radius:6px;padding:0 14px;color:var(--ink)}label{display:block;font-weight:600;margin-bottom:6px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
.section{padding:32px 0 56px}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:20px}.section-heading p{margin:0}.quick-grid,.card-grid,.step-grid{display:grid;gap:16px}.quick-grid,.step-grid{grid-template-columns:repeat(3,1fr)}.card-grid{grid-template-columns:repeat(3,1fr)}.surface-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px}.surface-card:hover{border-color:#b8c3ef}.quick-card{display:block;color:var(--ink)}.quick-card:hover{text-decoration:none}.quick-card strong{display:block;margin-bottom:4px}.tag-row{display:flex;flex-wrap:wrap;gap:6px;margin:14px 0}.tag{border-radius:999px;padding:3px 9px;background:var(--primary-soft);color:var(--primary);font-size:12px;font-weight:600}.meta{color:var(--muted);font-size:14px}.status{color:var(--warning);font-size:13px;font-weight:700}.card-actions{display:flex;gap:8px;align-items:center;margin-top:18px}.step-card{position:relative;padding-top:52px}.step-card::before{counter-increment:step;content:counter(step);position:absolute;top:20px;left:20px;width:24px;height:24px;border-radius:50%;display:grid;place-items:center;background:var(--primary-soft);color:var(--primary);font-weight:700}.step-grid{counter-reset:step}
.page-header{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:28px}.page-header p{max-width:620px;margin:0}.toolbar{display:flex;gap:12px;padding:16px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:20px}.toolbar>*{flex:1}.match-layout{display:grid;grid-template-columns:300px 1fr;gap:24px;align-items:start}.filter-panel{position:sticky;top:20px}.field{margin-bottom:18px}.choice-list{display:grid;gap:8px}.choice{display:flex;align-items:center;gap:8px;color:var(--muted)}.choice input{width:18px;min-height:18px}.result-summary{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.result-summary p{margin:0}.detail-grid{display:grid;grid-template-columns:minmax(0,760px) 260px;gap:48px}.toc{position:sticky;top:20px;height:max-content}.toc a{display:block;padding:7px 0;color:var(--muted)}.prose h2{margin-top:36px}.prose ul{color:var(--muted);padding-left:24px}pre{overflow:auto;background:var(--code);color:#e5e7eb;padding:18px;border-radius:8px;font:14px/1.6 ui-monospace,SFMono-Regular,Consolas,monospace}.callout{border:1px solid #c7d2fe;border-left:4px solid var(--primary);background:var(--primary-soft);border-radius:6px;padding:14px 16px;margin:20px 0}.callout strong{display:block;margin-bottom:3px}.empty{text-align:center;padding:48px 20px;border:1px dashed var(--line);border-radius:var(--radius);background:var(--surface)}.site-footer{border-top:1px solid var(--line);background:var(--surface)}.footer-inner{min-height:64px;display:flex;justify-content:space-between;align-items:center;gap:20px;color:var(--muted);font-size:13px}
@media(max-width:800px){.shell{width:min(100% - 32px,720px)}.hero{padding:48px 0}.quick-grid,.card-grid,.step-grid{grid-template-columns:1fr 1fr}.match-layout,.detail-grid{grid-template-columns:1fr;gap:24px}.filter-panel,.toc{position:static}.toolbar{flex-direction:column}}
@media(max-width:640px){.header-inner{min-height:60px}.menu-button{display:inline-flex}.site-nav{display:none;position:absolute;z-index:5;top:60px;left:0;right:0;padding:8px 16px 16px;background:var(--surface);border-bottom:1px solid var(--line);flex-direction:column}.site-nav.is-open{display:flex}.site-nav a{border:0}.hero-form,.page-header,.footer-inner{flex-direction:column;align-items:stretch}.quick-grid,.card-grid,.step-grid{grid-template-columns:1fr}.page{padding:36px 0 56px}.section-heading{align-items:start;flex-direction:column}.footer-inner{justify-content:center;padding:16px 0}}