:root{--color-bg:#fff;--color-fg:#0a0a0a;--color-gray-50:#fafafa;--color-gray-100:#f4f4f5;--color-gray-200:#e4e4e7;--color-gray-300:#d4d4d8;--color-gray-400:#a1a1aa;--color-gray-500:#71717a;--color-gray-600:#52525b;--color-gray-700:#3f3f46;--color-gray-900:#18181b;--color-border:#1c1c1c;--color-border-light:rgba(28,28,28,.08);--color-accent:#22c55e;--color-accent-subtle:#ecfdf5;--section-bg-alt:#fafafa;--section-bg-dark:#0a0a0a;--section-bg-dark-fg:#fafafa;--font-sans:"Inter",ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;--font-sc:"Noto Sans SC","Inter","PingFang SC","Microsoft YaHei",sans-serif;--font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;--radius-xs:4px;--radius-sm:6px;--radius:8px;--radius-lg:12px;--border-w:1px;--max-w:1200px;--max-w-narrow:720px;--max-w-wide:1400px;--section-pad:160px;--hero-pad:152px;--section-gap:0px;--pad-x:24px;--text-h1:clamp(48px,9vw,104px);--text-h2:clamp(32px,4.5vw,64px);--text-h3:clamp(22px,2.5vw,32px);--text-body:18px;--text-body-lg:20px;--text-small:14px;--text-xs:12px;--lh-tight:1.05;--lh-snug:1.2;--lh-normal:1.6;--ls-tight:-0.04em;--ls-snug:-0.02em;--ls-mono:0.02em;--ease:cubic-bezier(0.16,1,0.3,1);--ease-out:cubic-bezier(0.22,1,0.36,1);--dur:160ms;--dur-fast:120ms;--dur-slow:280ms}*{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body,html{height:100%}body{font-family:var(--font-sans);font-size:var(--text-body);line-height:var(--lh-normal);color:var(--color-fg);background:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-feature-settings:"cv02","cv03","cv04","cv11","ss01";text-rendering:optimizeLegibility}a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease)}a:hover{color:var(--color-gray-600)}button{font:inherit;cursor:pointer;border:none;background:transparent}a:focus-visible,button:focus-visible{outline:2px solid var(--color-fg);outline-offset:2px;border-radius:var(--radius-xs)}h1,h2,h3,h4,h5,h6{font-weight:600;letter-spacing:var(--ls-snug);line-height:var(--lh-tight);color:var(--color-fg)}h1{font-size:var(--text-h1);letter-spacing:var(--ls-tight);font-weight:700;line-height:1}h2{font-size:var(--text-h2)}h3{font-size:var(--text-h3);line-height:var(--lh-snug)}p{color:var(--color-gray-600);line-height:var(--lh-normal)}code,kbd,pre,samp{font-family:var(--font-mono);font-size:13px;letter-spacing:var(--ls-mono)}::selection{background:var(--color-fg);color:var(--color-bg)}.mono{letter-spacing:var(--ls-mono)}.eyebrow,.mono{font-family:var(--font-mono);font-size:var(--text-xs);color:var(--color-gray-500);text-transform:uppercase}.eyebrow{display:inline-flex;align-items:center;gap:8px;font-weight:500;letter-spacing:.08em}.dot-green{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--color-accent);box-shadow:0 0 0 3px var(--color-accent-subtle)}.divider-thin{height:1px;background:var(--color-border);width:100%}.cs-pointer{cursor:pointer}@media (max-width:768px){:root{--section-pad:96px;--hero-pad:96px;--pad-x:20px}}