:root{--accent: #bd1b21;--accent-dark: #97161a;--ink: #16181c;--ink-2: #3a3f46;--muted: #6b7280;--faint: #9aa1a9;--line: #e7e9ec;--card: #fff;--bg: #fbfbfc;--nav: #121212;--accent-tint: #fdecec;--mono: "JetBrains Mono", "SF Mono", ui-monospace, monospace}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body.doc{margin:0;font-family:Inter,system-ui,sans-serif;background:var(--bg);color:var(--ink-2);font-size:15px;line-height:1.72;-webkit-font-smoothing:antialiased}.doc nav{background:transparent;height:auto;padding:0;align-items:stretch;justify-content:flex-start;text-align:left;display:flex}.doc-progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:60;background:transparent;pointer-events:none}.doc-progress>span{display:block;height:100%;width:100%;transform:scaleX(0);transform-origin:0 50%;background:linear-gradient(90deg,var(--accent),var(--accent-dark));transition:transform .08s linear}.doc-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--nav) 92%,transparent);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid rgba(255,255,255,.07)}.doc-header-inner{max-width:1160px;margin:0 auto;height:58px;display:flex;align-items:center;justify-content:space-between;padding:0 32px;gap:20px}.doc-brand{display:flex;align-items:center;gap:9px;text-decoration:none;color:#fff;font-weight:700;font-size:14.5px;min-width:0}.doc-brand-mark{color:var(--accent);display:inline-flex}.doc-brand-mark svg{width:21px;height:21px}.doc-brand-dot{color:var(--accent)}.doc-crumb-sep{color:#ffffff47;font-weight:400}.doc-crumb{color:#ffffff9e;font-weight:500;font-size:13.5px}.doc-crumb-current{color:#ffffffeb}@media(max-width:620px){.doc-crumb-sep,.doc-crumb:not(.doc-crumb-current){display:none}}.doc-header-actions{display:flex;align-items:center;gap:8px}.doc-xlink{color:#ffffffb3;text-decoration:none;font-size:13px;font-weight:500;padding:7px 12px;border-radius:8px;white-space:nowrap;transition:color .15s,background .15s}.doc-xlink:hover{color:#fff;background:#ffffff14}.doc-cta{color:#fff;background:var(--accent);text-decoration:none;font-size:13px;font-weight:600;padding:7px 14px;border-radius:8px;white-space:nowrap;transition:background .15s}.doc-cta:hover{background:var(--accent-dark)}@media(max-width:480px){.doc-xlink{display:none}}.doc-main{max-width:1160px;margin:0 auto;padding:0 32px}@media(max-width:620px){.doc-header-inner,.doc-main{padding:0 18px}}.doc-footer{border-top:1px solid var(--line);margin-top:72px}.doc-footer-inner{max-width:1160px;margin:0 auto;padding:28px 32px 48px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.doc-footer-line{color:var(--muted);font-size:13px;margin:0;max-width:620px}.doc-footer-link{color:var(--accent);text-decoration:none;font-weight:600;font-size:13px;white-space:nowrap}.doc-footer-link:hover{color:var(--accent-dark)}.doc code{font-family:var(--mono);font-size:.86em;background:#f2f3f5;color:var(--accent-dark);padding:1.5px 6px;border-radius:5px;border:1px solid var(--line)}.doc pre{font-family:var(--mono);font-size:13px;line-height:1.65;background:var(--nav);color:#d7dbe0;padding:16px 18px;border-radius:12px;overflow-x:auto;margin:18px 0;border:1px solid #23262b}.doc pre code{background:none;border:none;color:inherit;padding:0;font-size:inherit}.doc pre .t-method{color:#7ee787;font-weight:600}.doc pre .t-key{color:#79c0ff}.doc pre .t-str{color:#ffab70}.doc pre .t-com{color:#768390}.doc a.inline{color:var(--accent);text-decoration:none;border-bottom:1px solid transparent}.doc a.inline:hover{border-bottom-color:var(--accent)}.callout{display:flex;gap:11px;padding:13px 16px;border-radius:10px;margin:20px 0;border:1px solid var(--line);border-left-width:3px;font-size:14px;line-height:1.6;background:var(--card)}.callout .ci{flex:0 0 auto;font-size:15px;line-height:1.5}.callout p{margin:0}.callout.tip{border-left-color:#16a34a;background:#f6fdf9}.callout.tip .ci{color:#16a34a}.callout.warn{border-left-color:#d97706;background:#fffdf5}.callout.warn .ci{color:#d97706}.callout.note{border-left-color:#2563eb;background:#f6f9ff}.callout.note .ci{color:#2563eb}.concept-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px;margin:22px 0}dl.concept{margin:0;padding:16px 18px;background:var(--card);border:1px solid var(--line);border-radius:12px;transition:box-shadow .18s,transform .18s}dl.concept:hover{box-shadow:0 6px 22px #14161c12;transform:translateY(-2px)}dl.concept dt{font-weight:700;color:var(--ink);font-size:14.5px;margin-bottom:4px}dl.concept dd{margin:0;font-size:13.5px;color:var(--muted);line-height:1.6}.doc-table-wrap{overflow-x:auto;margin:22px 0;border:1px solid var(--line);border-radius:12px}table.doc-table{width:100%;border-collapse:collapse;font-size:13.5px;min-width:520px}table.doc-table th{text-align:left;text-transform:uppercase;letter-spacing:.5px;font-size:10.5px;font-weight:700;color:var(--muted);padding:11px 14px;background:#f7f8f9;border-bottom:1px solid var(--line)}table.doc-table td{padding:11px 14px;border-bottom:1px solid var(--line);color:var(--ink-2);vertical-align:top}table.doc-table tr:last-child td{border-bottom:none}table.doc-table tbody tr:hover{background:#fcfcfd}table.doc-table td:first-child,table.doc-table th:first-child{font-weight:600;color:var(--ink);white-space:nowrap}ol.steps{list-style:none;counter-reset:step;margin:22px 0;padding:0}ol.steps>li{counter-increment:step;position:relative;padding:2px 0 18px 44px;min-height:30px}ol.steps>li:before{content:counter(step);position:absolute;left:0;top:0;width:28px;height:28px;border-radius:8px;background:var(--nav);color:#fff;font-size:12.5px;font-weight:700;display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums}ol.steps>li:not(:last-child):after{content:"";position:absolute;left:13.5px;top:30px;bottom:4px;width:1px;background:var(--line)}ol.steps>li strong{color:var(--ink)}ul.dots{list-style:none;margin:16px 0;padding:0}ul.dots>li{position:relative;padding:3px 0 3px 20px}ul.dots>li:before{content:"";position:absolute;left:3px;top:12px;width:6px;height:6px;border-radius:50%;background:var(--accent)}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto!important}.doc-progress>span{transition:none}dl.concept{transition:none}}