:root{--color-bg: #fcfbf8;--color-surface: #ffffff;--color-surface-sunk: #f4f3ef;--color-nav-bg: #1f1d1b;--color-nav-fg: #f5f3ed;--color-nav-fg-muted: #a8a39a;--color-nav-hairline: #2e2b27;--color-text: #1a1a1a;--color-text-strong: #0a0a0a;--color-text-muted: #5a5856;--color-text-subtle: #8a877f;--color-hairline: #e6e3dc;--color-hairline-strong: #d6d2c9;--color-accent: #2b4e7c;--color-accent-hover: #1d3a63;--color-accent-soft: #eef4fa;--color-warn-bg: #fef3c7;--color-warn-fg: #78350f;--color-warn-border: #fde68a;--color-callout-takeaway-bg: #fff9e6;--color-callout-takeaway-border: #8a6d00;--color-callout-summary-bg: #eef4fa;--color-callout-summary-border: #2b4e7c;--color-callout-note-bg: #f5f5f2;--color-callout-note-border: #888;--color-error: #b00;--color-status-draft: #d9a700;--color-status-published: #1a7e1a;--color-status-archived: var(--color-text-subtle);--color-btn-bg: linear-gradient(180deg, #2d2a26 0%, #1f1d1b 100%);--color-btn-bg-hover: linear-gradient(180deg, #3a3733 0%, #2a2724 100%);--color-btn-bg-active: linear-gradient(180deg, #1f1d1b 0%, #2d2a26 100%);--color-btn-fg: #f5f3ed;--color-btn-shadow: 0 1px 0 rgba(255, 255, 255, .06) inset, 0 1px 2px rgba(0, 0, 0, .18);--color-btn-shadow-hover: 0 1px 0 rgba(255, 255, 255, .1) inset, 0 2px 6px rgba(0, 0, 0, .22);--color-btn-ghost-fg: #f5f3ed;--color-btn-ghost-border: rgba(245, 243, 237, .28);--color-btn-ghost-bg-hover: rgba(245, 243, 237, .08);--font-display: "Montserrat", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;--font-body: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;--font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;--font-weight-regular: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--fs-xs: .75rem;--fs-sm: .85rem;--fs-base: 1rem;--fs-md: 1.0625rem;--fs-lg: 1.15rem;--fs-xl: 1.5rem;--fs-2xl: 2.25rem;--fs-3xl: 3rem;--lh-tight: 1.2;--lh-snug: 1.35;--lh-normal: 1.55;--lh-relaxed: 1.65;--tracking-display: -.01em;--tracking-eyebrow: .06em;--tracking-button: .01em;--radius-sm: 4px;--radius-md: 6px;--radius-lg: 10px;--radius-pill: 999px;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--shadow-sm: 0 1px 2px rgba(20, 18, 14, .06);--shadow-md: 0 4px 12px rgba(20, 18, 14, .1);--shadow-lg: 0 10px 25px rgba(20, 18, 14, .18);--motion-fast: .12s;--motion-base: .18s;--motion-slow: .24s;--ease-out: cubic-bezier(.2, .8, .2, 1);--layout-max: 1100px;--layout-prose: 700px;--layout-toc: 220px;--focus-ring: 0 0 0 3px rgba(43, 78, 124, .35)}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}body{margin:0;background:var(--color-bg);color:var(--color-text);font-family:var(--font-body);font-size:var(--fs-base);line-height:var(--lh-normal)}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:var(--font-weight-semibold);letter-spacing:var(--tracking-display);color:var(--color-text-strong);margin:0}a{color:var(--color-accent);text-decoration:none;transition:color var(--motion-fast) var(--ease-out)}a:hover{color:var(--color-accent-hover);text-decoration:underline}:focus-visible{outline:none;box-shadow:var(--focus-ring);border-radius:var(--radius-sm)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);background:var(--color-btn-bg);color:var(--color-btn-fg);border:0;border-radius:var(--radius-md);padding:.55rem 1rem;font-family:var(--font-body);font-size:var(--fs-sm);font-weight:var(--font-weight-medium);letter-spacing:var(--tracking-button);cursor:pointer;box-shadow:var(--color-btn-shadow);transition:background var(--motion-base) var(--ease-out),box-shadow var(--motion-base) var(--ease-out),transform var(--motion-fast) var(--ease-out)}.btn:hover:not(:disabled){background:var(--color-btn-bg-hover);box-shadow:var(--color-btn-shadow-hover)}.btn:active:not(:disabled){background:var(--color-btn-bg-active);transform:translateY(1px)}.btn:disabled{opacity:.55;cursor:not-allowed;box-shadow:none}.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);background:transparent;color:var(--color-btn-ghost-fg);border:1px solid var(--color-btn-ghost-border);border-radius:var(--radius-md);padding:.45rem .9rem;font-family:var(--font-body);font-size:var(--fs-sm);font-weight:var(--font-weight-medium);letter-spacing:var(--tracking-button);cursor:pointer;transition:background var(--motion-base) var(--ease-out),border-color var(--motion-base) var(--ease-out)}.btn-ghost:hover:not(:disabled){background:var(--color-btn-ghost-bg-hover);border-color:var(--color-btn-ghost-fg)}.btn-ghost:disabled{opacity:.55;cursor:not-allowed}