:root{--bg: #FAFAF8;--bg-soft: #F3F3EF;--bg-card: #FFFFFF;--bg-inset: #F4F4F0;--ink: #1A1A1A;--ink-2: #404040;--muted: #616161;--line: #E5E5E5;--line-strong: #D4D4D4;--accent: #1E3A5F;--accent-2: #3D6C99;--accent-ink: #1E3A5F;--accent-soft: #EBEFF4;--accent-glow: rgba(30, 58, 95, .14);--dot: rgba(26, 26, 26, .045);--btn-bg: #1E3A5F;--btn-ink: #FFFFFF;--code-bg: #0F1622;--code-soft: #131C2A;--code-ink: #DCE6EE;--code-mut: rgba(220, 230, 238, .55);--shadow-lg: 0 1px 2px rgba(0,0,0,.03), 0 16px 32px -24px rgba(10,17,32,.1);--radius: 12px;--radius-lg: 16px;--font-display: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;--font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;--max: 1080px;--header-h: 64px;color-scheme:light}[data-theme=dark]{--bg: #0B0E13;--bg-soft: #0E1218;--bg-card: #141A23;--bg-inset: #0F141B;--ink: #ECF0F4;--ink-2: #A9B4C2;--muted: #8B96A5;--line: rgba(238, 243, 247, .08);--line-strong: rgba(238, 243, 247, .16);--accent: #5992CF;--accent-2: #7FB2E6;--accent-ink: #7FB2E6;--accent-soft: rgba(89, 146, 207, .15);--accent-glow: rgba(89, 146, 207, .16);--dot: rgba(238, 243, 247, .04);--btn-bg: #5992CF;--btn-ink: #0B0E13;--code-bg: #0B1118;--code-soft: #111A24;--code-ink: #DCE6EE;--code-mut: rgba(220, 230, 238, .5);color-scheme:dark}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--font-body);font-size:1.0625rem;line-height:1.65;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}h1,h2,h3,h4{font-family:var(--font-display);margin:0;color:var(--ink)}p{margin:0}a{color:var(--accent-ink);text-decoration:none}a:hover{text-decoration:underline}::selection{background:var(--accent);color:#fafaf8}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}.container{max-width:var(--max);margin:0 auto;padding:0 clamp(20px,4vw,36px)}.eyebrow{font-family:var(--font-mono);font-size:.72rem;font-weight:500;letter-spacing:.16em;text-transform:uppercase;color:var(--accent-ink);display:inline-flex;align-items:center;gap:10px;margin-bottom:20px}.eyebrow:before{content:"";width:24px;height:1.5px;background:var(--accent);border-radius:2px}.site-header{position:sticky;top:0;z-index:100;background:color-mix(in srgb,var(--bg) 80%,transparent);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.nav{max-width:var(--max);margin:0 auto;height:var(--header-h);padding:0 clamp(20px,4vw,36px);display:flex;align-items:center;gap:28px}.brand{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-display);font-size:1.15rem;font-weight:600;letter-spacing:-.02em;color:var(--ink);text-decoration:none}.brand:hover{text-decoration:none}.brand .mark{width:22px;height:auto}.brand em{font-style:normal;color:var(--accent)}.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}.nav-links a{font-size:.875rem;font-weight:500;color:var(--ink-2);padding:8px 14px;border-radius:10px}.nav-links a:hover{color:var(--ink);background:var(--dot);text-decoration:none}.nav-ext{display:flex;align-items:center;gap:12px}.theme-toggle{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line-strong);border-radius:8px;background:transparent;color:var(--ink);cursor:pointer}.theme-toggle svg{width:16px;height:16px}.icon-sun{display:none}[data-theme=dark] .icon-sun{display:block}[data-theme=dark] .icon-moon{display:none}.btn{display:inline-flex;align-items:center;gap:8px;font-size:.875rem;font-weight:600;padding:.6rem 1.1rem;border-radius:10px;background:var(--btn-bg);color:var(--btn-ink)}.btn:hover{text-decoration:none;opacity:.92}.btn-ghost{background:transparent;color:var(--ink);border:1px solid 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