:root{--bg:#fff;--surface:#fff;--surface-muted:#fafafa;--ink:#0a0a0a;--muted:#525252;--subtle:#858585;--line:#e5e5e5;--line-strong:#cfcfcf;--max-width:1040px;--content-width:720px}*{box-sizing:border-box}html{background:var(--bg);min-height:100%}body{background:var(--bg);min-height:100%;color:var(--ink);letter-spacing:0;margin:0;font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,Helvetica Neue,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}a{color:inherit;text-decoration:none}.site-shell{width:min(100% - 40px, var(--max-width));margin:0 auto;padding:24px 0 64px}.topbar{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:24px;padding:0 0 18px;display:flex}.brand{align-items:center;gap:11px;min-width:0;display:inline-flex}.brand-logo{border-radius:8px;width:34px;height:34px;display:block}.brand-copy{gap:1px;display:grid}.brand-title{font-size:15px;font-weight:700;line-height:1.25}.brand-subtitle{color:var(--subtle);font-size:12px;font-weight:500;line-height:1.3}.nav{color:var(--muted);align-items:center;gap:4px;font-size:14px;font-weight:500;display:flex}.nav-link{border:1px solid #0000;border-radius:6px;min-height:34px;padding:7px 10px}.nav-link:hover,.nav-link[aria-current=page]{border-color:var(--line);background:var(--surface-muted);color:var(--ink)}.hero{border-bottom:1px solid var(--line);gap:18px;padding:clamp(52px,8vw,88px) 0 clamp(34px,6vw,58px);display:grid}.eyebrow{color:var(--muted);letter-spacing:0;text-transform:uppercase;font-family:SF Mono,ui-monospace,Menlo,Monaco,Consolas,monospace;font-size:12px;font-weight:500;line-height:1.4}h1{max-width:780px;color:var(--ink);letter-spacing:0;margin:0;font-size:clamp(40px,7vw,72px);font-weight:720;line-height:.98}.hero-text{max-width:var(--content-width);color:var(--muted);margin:0;font-size:clamp(16px,2vw,19px);font-weight:400;line-height:1.75}.meta-strip{max-width:var(--content-width);flex-wrap:wrap;gap:8px;margin-top:4px;display:flex}.meta-item{border:1px solid var(--line);background:var(--surface);color:var(--muted);border-radius:6px;padding:8px 10px;font-size:13px;font-weight:500;line-height:1.4}.content-grid{grid-template-columns:minmax(0, var(--content-width)) 280px;align-items:start;gap:40px;margin-top:36px;display:grid}.sections{gap:0;display:grid}.section{border-bottom:1px solid var(--line);padding:28px 0}.section:first-child{padding-top:0}.section h2{color:var(--ink);margin:0;font-size:22px;font-weight:650;line-height:1.35}.section-list{gap:10px;margin:14px 0 0;padding:0;list-style:none;display:grid}.section-list li{color:var(--muted);padding-left:17px;font-size:15px;font-weight:400;line-height:1.78;position:relative}.section-list li:before{background:var(--ink);content:"";border-radius:999px;width:5px;height:5px;position:absolute;top:.86em;left:0}.side-panel{border:1px solid var(--line);background:var(--surface);border-radius:8px;gap:14px;padding:18px;display:grid;position:sticky;top:24px}.side-panel h2{margin:0;font-size:16px;font-weight:650;line-height:1.35}.side-panel p{color:var(--muted);margin:0;font-size:14px;font-weight:400;line-height:1.65}.button{border:1px solid var(--ink);background:var(--ink);color:#fff;border-radius:6px;justify-content:center;align-items:center;min-height:40px;padding:9px 13px;font-size:14px;font-weight:560;line-height:1.2;display:inline-flex}.button:hover{background:#262626;border-color:#262626}.button.secondary{border-color:var(--line-strong);background:var(--surface);color:var(--ink)}.button.secondary:hover{border-color:var(--ink);background:var(--surface-muted)}.button-row{gap:10px;display:grid}.notice{border-left:2px solid var(--ink);background:var(--surface-muted);color:var(--muted);padding:12px 14px;font-size:13px;font-weight:400;line-height:1.65}.footer{border-top:1px solid var(--line);color:var(--subtle);flex-wrap:wrap;justify-content:space-between;gap:10px;margin-top:44px;padding-top:18px;font-size:13px;font-weight:450;line-height:1.5;display:flex}@media (max-width:760px){.site-shell{width:min(100% - 28px, var(--max-width));padding-top:16px}.topbar{flex-direction:column;align-items:flex-start;gap:14px}.nav{width:100%;padding-bottom:2px;overflow-x:auto}.nav-link{white-space:nowrap}.hero{padding-top:42px}h1{font-size:clamp(36px,13vw,54px)}.content-grid{grid-template-columns:1fr;gap:24px;margin-top:28px}.section{padding:24px 0}.side-panel{position:static}}