.bk-static{--bks-bg:#e8edf5;--bks-paper:#fff;--bks-ink:#0a1530;--bks-subtle:#475569;--bks-muted:#94a3b8;--bks-line:#0a153014;--bks-line-strong:#0a153029;--bks-accent:#1d4ed8;--bks-accent-hover:#1e40af;--bks-accent-tint:#1d4ed80f;--bks-accent-glow:#1d4ed852;--bks-header-bg:#e8edf5db;background:var(--bks-bg);min-height:100vh;color:var(--bks-ink);flex-direction:column;font-family:Sora,Sora Fallback,Arial,system-ui,sans-serif;display:flex}:root[data-theme=dark] .bk-static{--bks-bg:#070c18;--bks-paper:#101727;--bks-ink:#eaf0fa;--bks-subtle:#9aa9c4;--bks-muted:#6b7a96;--bks-line:#ffffff17;--bks-line-strong:#ffffff2e;--bks-accent:#4f7cff;--bks-accent-hover:#6b95ff;--bks-accent-tint:#4f7cff1a;--bks-accent-glow:#4f7cff66;--bks-header-bg:#070c18d1}.bk-static a{color:inherit;text-decoration:none}.bk-static img,.bk-static svg{display:block}.bks-header{z-index:100;border-bottom:1px solid var(--bks-line);background:var(--bks-header-bg);-webkit-backdrop-filter:saturate(140%)blur(12px);position:sticky;top:0}.bks-header-row{justify-content:space-between;align-items:center;max-width:1180px;margin:0 auto;padding:14px 24px;display:flex}.bks-logo{align-items:center;gap:10px;display:flex}.bks-logo-word{color:var(--bks-ink);letter-spacing:-.01em;font-size:16px;font-weight:600}.bks-theme-toggle{border:1.5px solid var(--bks-accent);cursor:pointer;background:0 0;border-radius:50%;flex-shrink:0;place-items:center;width:36px;height:36px;padding:0;transition:transform .15s;display:grid;position:relative;overflow:hidden}.bks-theme-toggle:hover{transform:translateY(-1px)}.bks-theme-toggle svg{width:16px;height:16px;transition:opacity .3s,transform .35s;position:absolute}.bks-theme-toggle svg.sun{color:var(--bks-accent);opacity:1;transform:scale(1)rotate(0)}.bks-theme-toggle svg.moon{color:#fff;opacity:0;transform:scale(.6)rotate(-30deg)}:root[data-theme=dark] .bks-theme-toggle svg.sun{opacity:0;transform:scale(.6)rotate(30deg)}:root[data-theme=dark] .bks-theme-toggle svg.moon{opacity:1;transform:scale(1)rotate(0)}.bks-theme-toggle .liquid{background:var(--bks-accent);z-index:0;pointer-events:none;transition:transform .45s cubic-bezier(.6,0,.4,1);position:absolute;inset:0;transform:translateY(100%)}:root[data-theme=dark] .bks-theme-toggle .liquid{transform:translateY(0)}.bks-main{flex:1;justify-content:center;align-items:center;padding:72px 24px 88px;display:flex}.bks-stack{width:100%;max-width:600px}.bks-stack.align-left{text-align:left}.bks-stack.align-center{text-align:center}.bks-back{color:var(--bks-subtle);margin-bottom:28px;font-size:14px;font-weight:500;display:inline-block}.bks-back:hover{color:var(--bks-accent)}.bks-chip{letter-spacing:.14em;text-transform:uppercase;color:var(--bks-subtle);border:1px solid var(--bks-line);background:var(--bks-paper);border-radius:999px;margin-bottom:24px;padding:6px 12px;font-family:ui-monospace,JetBrains Mono,Menlo,monospace;font-size:12px;display:inline-block}.bks-title{letter-spacing:-.02em;color:var(--bks-ink);margin:0 0 16px;font-family:Sora,Sora Fallback,Arial,system-ui,sans-serif;font-size:clamp(30px,4.4vw,44px);font-weight:700;line-height:1.1}.bks-stack.align-center .bks-title{font-size:clamp(38px,5.6vw,56px)}.bks-updated{color:var(--bks-subtle);margin-bottom:8px;font-family:ui-monospace,JetBrains Mono,Menlo,monospace;font-size:13px}.bks-sub{color:var(--bks-subtle);margin:0 0 16px;font-size:16.5px;line-height:1.6}.bks-sub:last-of-type{margin-bottom:32px}.bks-sub a{color:var(--bks-accent);text-underline-offset:2px;text-decoration:underline}.bks-sub strong{color:var(--bks-ink)}.bks-cta{flex-wrap:wrap;justify-content:center;align-items:center;gap:12px;display:inline-flex}.bks-stack.align-left .bks-cta{justify-content:flex-start}.bks-btn-primary{background:var(--bks-accent);color:#fff;letter-spacing:-.005em;box-shadow:0 12px 28px -10px var(--bks-accent-glow);border-radius:999px;align-items:center;gap:10px;padding:13px 24px;font-size:15px;font-weight:600;transition:background .15s,transform .15s,box-shadow .2s;display:inline-flex}.bks-btn-primary:hover{background:var(--bks-accent-hover);transform:translateY(-1px)}.bks-btn-primary .arr{font-size:16px;transition:transform .15s}.bks-btn-primary:hover .arr{transform:translate(2px)}.bks-btn-ghost{border:1px solid var(--bks-line-strong);background:var(--bks-paper);color:var(--bks-ink);border-radius:999px;align-items:center;padding:13px 22px;font-size:15px;font-weight:500;transition:border-color .15s,background .15s;display:inline-flex}.bks-btn-ghost:hover{border-color:var(--bks-accent)}.bks-helpful{border-top:1px solid var(--bks-line);margin-top:48px;padding-top:24px}.bks-helpful-label{letter-spacing:.14em;text-transform:uppercase;color:var(--bks-muted);margin-bottom:14px;font-family:ui-monospace,Menlo,monospace;font-size:11px}.bks-helpful-list{text-align:left;grid-template-columns:repeat(2,1fr);gap:6px 16px;margin:0;padding:0;list-style:none;display:grid}.bks-helpful-list a{color:var(--bks-ink);border-radius:10px;justify-content:space-between;align-items:center;padding:10px 14px;font-size:14.5px;font-weight:500;transition:background .15s,color .15s;display:flex}.bks-helpful-list a:hover{background:var(--bks-accent-tint);color:var(--bks-accent)}.bks-helpful-list a .a{color:var(--bks-muted);font-size:16px;transition:color .15s,transform .15s}.bks-helpful-list a:hover .a{color:var(--bks-accent);transform:translate(3px)}.bks-footer{border-top:1px solid var(--bks-line);color:var(--bks-subtle);justify-content:space-between;align-items:center;width:100%;max-width:1180px;margin:0 auto;padding:18px 24px;font-size:13px;display:flex}.bks-footer a{color:var(--bks-subtle)}.bks-footer a:hover{color:var(--bks-ink)}@media (max-width:640px){.bks-main{padding:48px 20px 64px}.bks-helpful-list{grid-template-columns:1fr}.bks-footer{flex-direction:column;gap:6px;padding:14px 18px}}