:root{--bg:#ffffff;--bg-soft:#f6f8fa;--bg-inset:#eef1f4;--border:#d8dee4;--text:#1f2328;--text-soft:#59636e;--brand:#b3452a;--brand-strong:#93331d;--brand-soft:rgba(179, 69, 42, 0.09);--link:#a03f26;--code-bg:#f0f2f5;--shadow:0 1px 3px rgba(31, 35, 40, 0.08), 0 8px 24px rgba(31, 35, 40, 0.06);--header-bg:rgba(255, 255, 255, 0.88);color-scheme:light}html[data-theme=dark]{--bg:#0d1117;--bg-soft:#151b23;--bg-inset:#1c222b;--border:#30363d;--text:#e6edf3;--text-soft:#9aa4af;--brand:#e07a5f;--brand-strong:#f08a6d;--brand-soft:rgba(224, 122, 95, 0.13);--link:#ec8f73;--code-bg:#1c222b;--shadow:0 1px 3px rgba(0, 0, 0, 0.5), 0 8px 24px rgba(0, 0, 0, 0.35);--header-bg:rgba(13, 17, 23, 0.88);color-scheme:dark}@media(prefers-color-scheme:dark){html[data-theme=auto]{--bg:#0d1117;--bg-soft:#151b23;--bg-inset:#1c222b;--border:#30363d;--text:#e6edf3;--text-soft:#9aa4af;--brand:#e07a5f;--brand-strong:#f08a6d;--brand-soft:rgba(224, 122, 95, 0.13);--link:#ec8f73;--code-bg:#1c222b;--shadow:0 1px 3px rgba(0, 0, 0, 0.5), 0 8px 24px rgba(0, 0, 0, 0.35);--header-bg:rgba(13, 17, 23, 0.88);color-scheme:dark}}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,segoe ui,Roboto,noto sans,pingfang sc,hiragino sans gb,microsoft yahei,noto sans cjk sc,noto sans cjk tc,noto sans cjk jp,noto sans cjk kr,Ubuntu,Cantarell,helvetica neue,Arial,sans-serif;font-size:16px;line-height:1.65;background:var(--bg);color:var(--text);transition:background-color .25s ease,color .25s ease}.container{width:100%;max-width:1080px;margin:0 auto;padding:0 20px}a{color:var(--link);text-decoration:none}a:hover{text-decoration:underline}code,pre,kbd{font-family:ui-monospace,SFMono-Regular,sf mono,Menlo,Consolas,liberation mono,monospace}.site-header{position:sticky;top:0;z-index:50;background:var(--header-bg);backdrop-filter:saturate(180%)blur(12px);-webkit-backdrop-filter:saturate(180%)blur(12px);border-bottom:1px solid var(--border)}.header-inner{display:flex;align-items:center;gap:16px;height:60px}.brand{display:flex;align-items:center;gap:9px;font-weight:700;font-size:19px;color:var(--text);letter-spacing:.2px;white-space:nowrap}.brand:hover{text-decoration:none}.brand .mark{width:13px;height:13px;border-radius:4px;background:linear-gradient(135deg,var(--brand),var(--brand-strong));display:inline-block}.site-nav{margin-left:auto;display:flex;align-items:center;gap:4px;flex-wrap:wrap}.site-nav a.nav-link{color:var(--text-soft);font-size:14.5px;padding:7px 10px;border-radius:8px;white-space:nowrap}.site-nav a.nav-link:hover,.site-nav a.nav-link.active{color:var(--text);background:var(--brand-soft);text-decoration:none}.icon-btn{border:1px solid var(--border);background:var(--bg-soft);color:var(--text-soft);border-radius:8px;padding:6px 10px;font-size:13.5px;cursor:pointer;line-height:1}.icon-btn:hover{color:var(--text)}.lang-switch{position:relative}.lang-switch summary{list-style:none;cursor:pointer;border:1px solid var(--border);background:var(--bg-soft);color:var(--text-soft);border-radius:8px;padding:6px 10px;font-size:13.5px;user-select:none}.lang-switch summary::-webkit-details-marker{display:none}.lang-switch summary:hover{color:var(--text)}.lang-menu{position:absolute;right:0;top:calc(100% + 8px);background:var(--bg);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow);padding:6px;min-width:160px;z-index:60}.lang-menu a{display:block;padding:7px 12px;border-radius:8px;color:var(--text);font-size:14px;white-space:nowrap}.lang-menu a:hover{background:var(--brand-soft);text-decoration:none}.lang-menu a.current{color:var(--brand);font-weight:600}.menu-toggle{display:none}.hero{padding:76px 0 56px;text-align:center;background:radial-gradient(900px 340px at 50% -60px,var(--brand-soft),transparent 70%)}.hero .eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.6px;color:var(--brand);background:var(--brand-soft);border:1px solid transparent;padding:5px 14px;border-radius:999px;margin-bottom:22px}.hero h1{font-size:clamp(34px,6vw,54px);line-height:1.15;margin:0 0 18px;letter-spacing:-.5px}.hero .tagline{font-size:clamp(16px,2.4vw,19px);color:var(--text-soft);max-width:660px;margin:0 auto 14px}.hero .chip{display:inline-block;font-size:13px;color:var(--text-soft);background:var(--bg-soft);border:1px solid var(--border);padding:4px 12px;border-radius:999px;margin:4px 3px}.cta-row{margin-top:32px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 22px;border-radius:10px;font-size:15px;font-weight:600;border:1px solid var(--border);color:var(--text);background:var(--bg-soft);transition:transform .12s ease,box-shadow .12s ease}.btn:hover{text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow)}.btn.primary{background:linear-gradient(135deg,var(--brand),var(--brand-strong));border-color:transparent;color:#fff}.section{padding:52px 0}.section.alt{background:var(--bg-soft);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.section h2{font-size:clamp(24px,3.4vw,32px);margin:0 0 8px;letter-spacing:-.3px}.section .section-lead{color:var(--text-soft);margin:0 0 32px;max-width:720px}.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.card{background:var(--bg);border:1px solid var(--border);border-radius:14px;padding:22px;display:flex;flex-direction:column;gap:8px;transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease}.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--brand)}.card h3{margin:0;font-size:17px}.card h3 a{color:var(--text)}.card p{margin:0;color:var(--text-soft);font-size:14.5px}.card .card-tags{margin-top:auto;padding-top:10px;display:flex;flex-wrap:wrap;gap:6px}.tag{font-size:12px;color:var(--text-soft);background:var(--bg-inset);border:1px solid var(--border);padding:2px 9px;border-radius:999px}.repo{font-size:13px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:var(--brand)}.steps{counter-reset:step;display:grid;gap:14px}.step{display:flex;gap:16px;align-items:flex-start;background:var(--bg);border:1px solid var(--border);border-radius:14px;padding:18px 20px}.step .num{counter-increment:step;flex:none;width:30px;height:30px;border-radius:50%;background:var(--brand-soft);color:var(--brand);font-weight:700;font-size:15px;display:flex;align-items:center;justify-content:center;margin-top:2px}.step .num::before{content:counter(step)}.step h3{margin:0 0 6px;font-size:16.5px}.step p{margin:0 0 10px;color:var(--text-soft);font-size:14.5px}pre{background:var(--code-bg);border:1px solid var(--border);border-radius:10px;padding:14px 16px;overflow-x:auto;font-size:13.5px;line-height:1.6;margin:0}pre code{background:0 0;padding:0}code.inline{background:var(--code-bg);border:1px solid var(--border);border-radius:6px;padding:1px 6px;font-size:.88em}.copy-btn{float:right;margin:-4px -6px 6px 10px;border:1px solid var(--border);background:var(--bg);color:var(--text-soft);font-size:12px;border-radius:7px;padding:3px 9px;cursor:pointer}.copy-btn:hover{color:var(--text)}.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:12px}table{border-collapse:collapse;width:100%;font-size:14.5px;min-width:560px}th,td{text-align:left;padding:11px 16px;border-bottom:1px solid var(--border)}th{background:var(--bg-soft);font-size:13px;color:var(--text-soft);text-transform:uppercase;letter-spacing:.4px}tr:last-child td{border-bottom:none}td code{font-size:13px}.prose{max-width:780px}.prose h1{font-size:clamp(28px,4vw,38px);margin-top:8px}.prose h2{font-size:24px;margin-top:44px;padding-bottom:8px;border-bottom:1px solid var(--border)}.prose h3{font-size:18px;margin-top:30px}.prose p,.prose li{color:var(--text)}.prose p{margin:12px 0}.prose img{max-width:100%}.site-footer{border-top:1px solid var(--border);background:var(--bg-soft);padding:40px 0 32px;margin-top:40px;font-size:14px;color:var(--text-soft)}.footer-inner{display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;align-items:flex-start}.footer-links{display:flex;flex-wrap:wrap;gap:18px}.footer-links a{color:var(--text-soft)}.footer-links a:hover{color:var(--text)}.footer-note{margin-top:26px;font-size:13px}.back-top{position:fixed;right:22px;bottom:22px;width:42px;height:42px;border-radius:50%;border:1px solid var(--border);background:var(--bg);color:var(--text);box-shadow:var(--shadow);cursor:pointer;font-size:18px;line-height:1;opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:40}.back-top.show{opacity:.9;pointer-events:auto}.back-top:hover{opacity:1}@media(max-width:860px){.menu-toggle{display:inline-flex}.site-nav{display:none;position:absolute;top:60px;left:0;right:0;flex-direction:column;align-items:stretch;background:var(--bg);border-bottom:1px solid var(--border);padding:10px 16px 16px;gap:4px;box-shadow:var(--shadow)}.site-nav.open{display:flex}.site-nav a.nav-link{padding:11px 12px;font-size:15px}.lang-switch summary{width:100%;text-align:center}.lang-menu{position:static;box-shadow:none;border:none;padding:4px 0 0}.hero{padding:52px 0 40px}.section{padding:40px 0}}