:root{--neutral-50: #fafafa;--neutral-100: #f5f5f5;--neutral-200: #e5e5e5;--neutral-300: #d4d4d4;--neutral-400: #a3a3a3;--neutral-500: #737373;--neutral-600: #525252;--neutral-700: #404040;--neutral-800: #262626;--neutral-900: #171717;--neutral-950: #0a0a0a;--blue-400: #60a5fa;--blue-500: #3b82f6;--blue-600: #2563eb;--blue-700: #1d4ed8;--bg: var(--neutral-50);--surface: #ffffff;--border: var(--neutral-200);--border-strong: var(--neutral-300);--text: var(--neutral-900);--text-secondary: var(--neutral-600);--text-muted: var(--neutral-500);--accent: var(--blue-600);--accent-hover: var(--blue-700);--font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, Roboto, "Helvetica Neue", Arial, sans-serif;--font-prose: "iA Writer Quattro", "New York", Georgia, "Times New Roman", serif;--font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;--maxw: 1080px;--radius: 12px;--radius-lg: 20px}@media(prefers-color-scheme:dark){:root{--bg: var(--neutral-950);--surface: var(--neutral-900);--border: var(--neutral-800);--border-strong: var(--neutral-700);--text: var(--neutral-100);--text-secondary: var(--neutral-400);--text-muted: #8d8d8d;--accent: var(--blue-400);--accent-hover: var(--blue-500)}}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-ui);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}code{font-family:var(--font-mono);font-size:.9em;background:color-mix(in srgb,var(--neutral-500) 14%,transparent);padding:.1em .35em;border-radius:6px}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}.nav{position:sticky;top:0;z-index:10;backdrop-filter:saturate(180%) blur(12px);background:color-mix(in srgb,var(--bg) 80%,transparent);border-bottom:1px solid 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14px;font-size:13px}.hero{text-align:center;padding:96px 0 56px}.hero__mark{width:72px;height:72px;border-radius:20px;margin:0 auto 28px;background:linear-gradient(135deg,var(--blue-500),var(--blue-700));box-shadow:0 12px 32px color-mix(in srgb,var(--blue-600) 35%,transparent)}.hero h1{font-size:clamp(34px,6vw,56px);line-height:1.08;letter-spacing:-.02em;font-weight:700}.hero .lede{max-width:620px;margin:20px auto 0;font-size:clamp(17px,2.4vw,20px);color:var(--text-secondary)}.hero .lede code{color:var(--text)}.hero__cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:32px}.hero__note{margin-top:14px;font-size:13px;color:var(--text-muted)}.shot{margin:16px auto 0;max-width:980px;border-radius:var(--radius-lg);border:1px solid var(--border);overflow:hidden;box-shadow:0 30px 80px color-mix(in srgb,var(--neutral-950) 18%,transparent)}.shot img{display:block;width:100%;height:auto}section.block{padding:72px 0}.section-head{text-align:center;max-width:640px;margin:0 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