:root{--bg:#fff;--surface:#fff;--surface-2:#f6f8fb;--surface-3:#eef2f7;--ink:#0b1220;--ink-muted:#55607a;--ink-faint:#8a94a8;--hairline:#e7ebf1;--hairline-strong:#d7dde7;--accent:#1e58ad;--accent-strong:#17458a;--accent-bright:#2f6fce;--accent-soft:#e7f0fb;--accent-ink:#0f2b56;--dark:#0b1220;--dark-2:#111a2e;--dark-ink:#eef3fb;--dark-muted:#9aa8c2;--dark-hairline:#ffffff1a;--dark-accent:#6aa2e8;--danger:#d64535;--danger-soft:#fcecea;--success:#1f8a53;--success-soft:#e7f5ee;--warning:#b4720f;--warning-soft:#fbf1de;--radius-sm:7px;--radius:12px;--radius-lg:18px;--radius-pill:999px;--container:1200px;--gutter:clamp(1.15rem, 4vw, 2.5rem);--font-body:ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-mono:ui-monospace, "SF Mono", "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;--shadow-sm:0 1px 2px #0b12200d;--shadow-md:0 8px 24px -10px #0b122029;--shadow-lg:0 22px 50px -18px #0b122047;--header-h:64px}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scrollbar-gutter:stable;font-size:16px}body{background:var(--bg);color:var(--ink);font-family:var(--font-body);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;flex-direction:column;min-height:100dvh;margin:0;font-size:1rem;line-height:1.6;display:flex;overflow-x:hidden}main{flex:1 0 auto}h1,h2,h3,h4{letter-spacing:-.02em;margin:0;font-weight:700;line-height:1.15}h1{font-size:clamp(2rem,5vw,3.4rem)}h2{font-size:clamp(1.5rem,3.4vw,2.3rem)}h3{font-size:1.15rem}p{margin:0}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.container{width:100%;max-width:var(--container);padding-inline:var(--gutter);margin-inline:auto}.muted{color:var(--ink-muted)}.small{font-size:.875rem}.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}.center{text-align:center}.btn{font:inherit;border-radius:var(--radius-sm);cursor:pointer;white-space:nowrap;border:1px solid #0000;justify-content:center;align-items:center;gap:.5rem;padding:.75rem 1.15rem;font-weight:600;line-height:1;text-decoration:none;transition:background .15s,border-color .15s,color .15s,opacity .15s;display:inline-flex}.btn:hover{text-decoration:none}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-strong)}.btn-ghost{color:var(--ink);border-color:var(--hairline-strong);background:0 0}.btn-ghost:hover{background:var(--surface-2)}.btn-light{color:#fff;border-color:var(--dark-hairline);background:#ffffff1a}.btn-light:hover{background:#ffffff2e}.btn-danger{background:var(--danger-soft);color:var(--danger);border-color:#0000}.btn-danger:hover{background:#f8ded9}.btn-sm{padding:.45rem .75rem;font-size:.85rem}.btn-block{width:100%}.card{background:var(--surface);border:1px solid var(--hairline);border-radius:var(--radius);padding:1.5rem}.pill{border-radius:var(--radius-pill);background:var(--accent-soft);color:var(--accent-ink);align-items:center;gap:.4rem;padding:.3rem .7rem;font-size:.8rem;font-weight:600;display:inline-flex}label{margin-bottom:.4rem;font-size:.875rem;font-weight:600;display:block}input,select,textarea{font:inherit;border:1px solid var(--hairline-strong);border-radius:var(--radius-sm);background:var(--surface);width:100%;color:var(--ink);padding:.65rem .8rem}input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);outline:none}.table{border-collapse:collapse;width:100%;font-size:.9rem}.table th,.table td{text-align:left;border-bottom:1px solid var(--hairline);padding:.7rem .75rem}.table th{text-transform:uppercase;letter-spacing:.05em;color:var(--ink-faint);font-size:.75rem}.table td{font-variant-numeric:tabular-nums}.scroll-x{overflow-x:auto}.section{padding-block:clamp(3rem,8vw,6rem)}.section-tight{padding-block:clamp(2rem,5vw,3.5rem)}.grid{gap:1.25rem;display:grid}.grid-2{grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr))}.grid-3{grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr))}.grid-4{grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr))}.band-dark{background:var(--dark);color:var(--dark-ink)}.band-dark h1,.band-dark h2,.band-dark h3{color:var(--dark-ink)}.band-dark .muted{color:var(--dark-muted)}pre.code{background:var(--dark-2);color:var(--dark-ink);border-radius:var(--radius);font-family:var(--font-mono);padding:1rem 1.15rem;font-size:.85rem;line-height:1.6;overflow-x:auto}code{font-family:var(--font-mono)}.stack{flex-direction:column;display:flex}.row{align-items:center;display:flex}.wrap{flex-wrap:wrap}.gap-sm{gap:.5rem}.gap{gap:1rem}.gap-lg{gap:1.5rem}.between{justify-content:space-between}.mt{margin-top:1rem}.mt-lg{margin-top:2rem}