:root{--bg: #0a0a0c;--bg-raised: #111115;--bg-elevated: #16161a;--border: #1f1f24;--border-strong: #2a2a32;--text: #e8e8ec;--text-dim: #8a8a94;--text-faint: #5a5a64;--accent: #7b6ee8;--accent-hover: #8d80f0;--accent-soft: rgba(123,110,232,.12);--warning: #f0a838;--warning-bg: rgba(240,168,56,.08);--success: #4caf85;--success-bg: rgba(76,175,133,.08);--danger: #e76f6f;--danger-bg: rgba(231,111,111,.08);--font-sans: "Inter", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, "SF Mono", monospace;--font-serif: "Noto Serif SC", "Songti SC", serif}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;font-feature-settings:"cv11","ss01","ss03";line-height:1.6}a{color:inherit;text-decoration:none}.container{max-width:760px;margin:0 auto;padding:0 32px}header.nav{position:sticky;top:0;z-index:50;background:#0a0a0cc7;backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--border)}.nav-inner{display:flex;align-items:center;justify-content:space-between;height:56px;max-width:1080px;margin:0 auto;padding:0 32px}.brand{display:flex;align-items:center;gap:10px;font-weight:500;letter-spacing:-.01em;font-size:14px}.brand .mark{width:24px;height:24px;border-radius:6px}.nav-links{display:flex;gap:18px;font-size:13px;align-items:center}.nav-links a{color:var(--text-dim);transition:color .15s ease}.nav-links a:hover,.nav-links a.active{color:var(--text)}.nav-links a.lang-switch{color:var(--text-dim);border:1px solid var(--border-strong);border-radius:6px;padding:3px 9px;font-size:11.5px;font-weight:500;letter-spacing:.05em;margin-left:4px}.nav-links a.lang-switch:hover{color:var(--text);border-color:var(--accent)}.breadcrumb{padding:24px 0 0;font-size:12.5px;color:var(--text-faint);letter-spacing:.02em}.breadcrumb a{color:var(--text-dim)}.breadcrumb a:hover{color:var(--accent)}.breadcrumb .sep{margin:0 8px;opacity:.5}main{padding:0 0 80px}.doc-header{margin:32px 0 40px}.doc-kicker{font-size:11px;font-weight:600;color:var(--accent);letter-spacing:.16em;text-transform:uppercase;margin-bottom:14px}.doc-title{font-family:var(--font-serif);font-size:38px;font-weight:500;line-height:1.25;letter-spacing:-.01em;margin:0 0 14px}.doc-desc{font-size:16px;line-height:1.65;color:var(--text-dim);max-width:640px;margin:0}.doc-body h2{font-size:22px;font-weight:600;margin:56px 0 18px;letter-spacing:-.01em;line-height:1.3;scroll-margin-top:80px}.doc-body h2:before{content:"";display:inline-block;width:3px;height:18px;background:var(--accent);border-radius:2px;vertical-align:middle;margin-right:12px;transform:translateY(-1px)}.doc-body h3{font-size:17px;font-weight:600;margin:32px 0 12px;color:var(--text);letter-spacing:-.005em}.doc-body p{font-size:15px;line-height:1.75;color:var(--text-dim);margin:0 0 14px}.doc-body strong{color:var(--text);font-weight:600}.doc-body em{color:var(--accent);font-style:normal;font-weight:500}.doc-body code{font-family:var(--font-mono);font-size:13px;background:var(--bg-elevated);padding:1.5px 7px;border-radius:4px;color:var(--text);border:1px solid var(--border)}.doc-body kbd{font-family:var(--font-mono);font-size:12px;font-weight:500;background:var(--bg-elevated);padding:2px 8px;border-radius:5px;border:1px solid var(--border-strong);box-shadow:0 1px #ffffff0d inset,0 1px 2px #0000004d;color:var(--text);min-width:22px;display:inline-block;text-align:center}.doc-body ul,.doc-body ol{margin:0 0 16px;padding-left:24px;font-size:15px;line-height:1.8;color:var(--text-dim)}.doc-body li{margin-bottom:6px}.doc-body li strong{color:var(--text)}.doc-body a{color:var(--accent);border-bottom:1px solid transparent;transition:border-color .15s}.doc-body a:hover{border-bottom-color:var(--accent)}.step-box{margin:18px 0;padding:18px 22px;background:var(--bg-raised);border-left:3px solid var(--accent);border-radius:0 10px 10px 0}.step-box .step-label{font-size:11px;font-weight:600;color:var(--accent);letter-spacing:.12em;text-transform:uppercase;margin-bottom:6px}.step-box p{margin:0}.step-box p+p{margin-top:8px}.callout{margin:20px 0;padding:16px 20px;border-radius:10px;font-size:14px;line-height:1.7;border:1px solid}.callout.tip{background:var(--accent-soft);border-color:#7b6ee84d;color:var(--text)}.callout.warn{background:var(--warning-bg);border-color:#f0a8384d;color:var(--text)}.callout.success{background:var(--success-bg);border-color:#4caf854d;color:var(--text)}.callout.danger{background:var(--danger-bg);border-color:#e76f6f4d;color:var(--text)}.callout strong{color:var(--text)}.callout-icon{display:inline-block;margin-right:6px}.doc-layout{display:grid;grid-template-columns:1fr 220px;gap:64px;align-items:start}.doc-toc{position:sticky;top:80px;font-size:13px;border-left:1px solid var(--border);padding-left:16px}.doc-toc-label{font-size:11px;color:var(--text-faint);letter-spacing:.1em;text-transform:uppercase;margin-bottom:14px}.doc-toc a{display:block;color:var(--text-dim);line-height:1.4;border-left:2px solid transparent;padding:6px 0;transition:color .15s,padding-left .15s}.doc-toc a:hover{color:var(--text)}.doc-toc a.active{color:var(--accent);padding-left:8px}.doc-footer-cta{margin-top:80px;padding:28px;background:var(--bg-raised);border:1px solid var(--border);border-radius:14px}.doc-footer-cta h3{font-size:17px;font-weight:600;margin:0 0 8px;letter-spacing:-.01em}.doc-footer-cta p{font-size:14px;color:var(--text-dim);margin:0 0 14px;line-height:1.65}.doc-footer-cta a{color:var(--accent)}.related-docs{margin-top:24px;display:flex;flex-wrap:wrap;gap:8px}.related-docs a{font-size:12.5px;padding:6px 12px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:999px;color:var(--text-dim);transition:border-color .15s,color .15s}.related-docs a:hover{color:var(--text);border-color:var(--accent)}footer.site-footer{padding:32px 0;border-top:1px solid var(--border);margin-top:64px}.site-footer-inner{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--text-faint);max-width:1080px;margin:0 auto;padding:0 32px}.site-footer-inner a{color:var(--text-dim)}.site-footer-inner a:hover{color:var(--text)}@media(max-width:880px){.doc-layout{grid-template-columns:1fr;gap:0}.doc-toc{display:none}}@media(max-width:640px){.container,.nav-inner{padding:0 20px}.doc-title{font-size:28px}.doc-desc{font-size:14.5px}.doc-body h2{font-size:19px;margin-top:40px}.doc-body h3{font-size:15.5px}.doc-body p,.doc-body ul,.doc-body ol{font-size:14.5px}.doc-footer-cta{padding:22px}}