:root{color-scheme:light;--ink:#162a43;--muted:#506176;--blue:#174caa;--line:#dce3eb;--paper:#fff;--ground:#f4f7fb;font:18px/1.8 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--ground);color:var(--ink)}a{color:var(--blue);text-underline-offset:.2em}a:hover{text-decoration-thickness:2px}a:focus-visible{outline:3px solid #174caa;outline-offset:5px}.shell{max-width:860px;margin:auto;padding:0 28px}header{border-bottom:1px solid var(--line);background:var(--paper)}header .shell{min-height:88px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;padding-top:18px;padding-bottom:18px}.brand{font-size:1.15rem;font-weight:700;letter-spacing:.01em;text-decoration:none;color:var(--ink)}nav{display:flex;gap:24px;font-size:.9rem}main{padding:60px 0 56px}article{padding:40px 44px;background:var(--paper);border:1px solid var(--line);border-top:4px solid var(--blue);border-radius:3px}.eyebrow{color:var(--blue);font-size:.8rem;font-weight:700;letter-spacing:.07em;margin:0 0 14px}h1{font-size:2rem;line-height:1.35;margin:0 0 18px;overflow-wrap:anywhere}h2{font-size:1.2rem;line-height:1.5;margin:34px 0 10px}p{margin:0 0 18px}ul{padding-left:1.35em;margin:0 0 20px}li{margin:8px 0}.intro{font-size:1.1rem}.muted{color:var(--muted)}.flow{margin:28px 0;padding:18px 22px;background:#eef4ff;border-left:3px solid var(--blue);font-weight:650}footer{padding:0 0 36px;font-size:.85rem;color:var(--muted)}code{font-size:.85em;overflow-wrap:anywhere}footer p{margin:0}a{overflow-wrap:anywhere}@media(max-width:600px){:root{font-size:16px}.shell{padding:0 20px}header .shell{gap:8px;min-height:80px}nav{gap:18px}main{padding:28px 0}article{padding:28px 24px}h1{font-size:1.75rem}h2{margin-top:28px}.flow{padding:16px}}
:root .home{min-height:100vh;min-height:100svh;background:#fff;color:#202124;display:flex;flex-direction:column}.home-main{flex:1;display:grid;place-items:center;padding:48px 24px}.home-main h1{margin:0;font-size:clamp(1.15rem,4vw,1.7rem);font-weight:400;line-height:1.6;text-align:center;letter-spacing:.015em}.home-footer{padding:20px 24px 28px;text-align:center;font-size:.8rem}.home-footer a{color:#64686d;text-decoration:none;display:inline-block;padding:8px 12px}.home-footer a:hover{text-decoration:underline}