:root{--c-bg:#F6F8FC;--c-bg-alt:#E9EFF8;--c-surface:#FFFFFF;--c-surface-alt:#F6F8FC;--c-ink:#1A1A1A;--c-ink-muted:#6B7785;--c-ink-soft:#9AA3AF;--c-ink-inverse:#F6F8FC;--c-border:rgba(4, 16, 35, 0.10);--c-border-strong:rgba(4, 16, 35, 0.20);--c-primary:#0A1B30;--c-primary-hover:#061322;--c-primary-soft:rgba(10, 27, 48, 0.06);--c-primary-tint:rgba(10, 27, 48, 0.12);--c-primary-deep:#050E1A;--c-primary-mid:#12345E;--c-action:#1488E0;--c-action-hover:#0E6FBE;--c-action-soft:rgba(20, 136, 224, 0.10);--c-accent:#1488E0;--c-accent-hover:#0E6FBE;--c-accent-soft:rgba(20, 136, 224, 0.16);--c-accent-tint:rgba(20, 136, 224, 0.28);--c-accent-glow:rgba(20, 136, 224, 0.45);--c-secondary:#00C8F0;--c-secondary-hover:#00A6CC;--c-secondary-soft:rgba(0, 200, 240, 0.14);--grad-brand:linear-gradient(120deg, #1A74F0 0%, #1488E0 45%, #00C8F0 100%);--grad-amber:linear-gradient(120deg, #1A74F0 0%, #1488E0 45%, #00C8F0 100%);--grad-navy:linear-gradient(135deg, #0A1B30 0%, #050E1A 100%);--grad-amber-glow:radial-gradient(circle at 50% 50%, rgba(20, 136, 224, 0.35) 0%, transparent 70%);--c-success:#2E7D5B;--c-success-soft:rgba(46, 125, 91, 0.10);--c-warning:#C77B16;--c-warning-soft:rgba(199, 123, 22, 0.12);--c-danger:#B53A36;--c-danger-soft:rgba(181, 58, 54, 0.10);--c-info:#1488E0;--c-info-soft:rgba(20, 136, 224, 0.10);--c-focus:#1488E0;--ring-focus:0 0 0 3px rgba(20, 136, 224, 0.45);--font-heading:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-body:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono:ui-monospace, "JetBrains Mono", "SF Mono", Menlo, monospace;--fs-3xs:0.625rem;--fs-2xs:0.6875rem;--fs-xs:0.75rem;--fs-sm:0.875rem;--fs-base:1rem;--fs-md:1.125rem;--fs-lg:1.25rem;--fs-xl:1.563rem;--fs-2xl:1.953rem;--fs-3xl:2.441rem;--fs-4xl:3.052rem;--fs-5xl:3.815rem;--lh-tight:1.15;--lh-snug:1.25;--lh-normal:1.55;--lh-relaxed:1.7;--fw-regular:400;--fw-medium:500;--fw-semibold:600;--fw-bold:700;--tr-tight:-0.02em;--tr-snug:-0.01em;--tr-normal:0;--tr-wide:0.04em;--tr-wider:0.12em;--sp-0:0;--sp-half:0.25rem;--sp-1:0.5rem;--sp-2:1rem;--sp-3:1.5rem;--sp-4:2rem;--sp-5:3rem;--sp-6:4rem;--sp-7:6rem;--sp-8:8rem;--sp-9:12rem;--r-sm:4px;--r-md:8px;--r-lg:12px;--r-xl:16px;--r-pill:999px;--elev-1:0 1px 2px rgba(4, 16, 35, 0.04), 0 1px 3px rgba(4, 16, 35, 0.06);--elev-2:0 2px 4px rgba(4, 16, 35, 0.06), 0 4px 8px rgba(4, 16, 35, 0.08);--elev-3:0 4px 8px rgba(4, 16, 35, 0.08), 0 8px 16px rgba(4, 16, 35, 0.10);--max-w-content:780px;--max-w-page:1340px;--max-w-wide:1480px;--container-pad:clamp(16px, 4vw, 32px);--toc-reservation:400px;--t-fast:120ms;--t-base:200ms;--t-slow:320ms;--ease:cubic-bezier(0.25, 0.46, 0.45, 0.94);--ease-out:cubic-bezier(0.16, 1, 0.3, 1);--z-base:1;--z-sticky:100;--z-header:500;--z-overlay:900;--z-modal:1000;--z-toast:1100}@media (prefers-reduced-motion:reduce){:root{--t-fast:0ms;--t-base:0ms;--t-slow:0ms}}