*,*:before,*:after{box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth}body{margin:20px 0 0;min-height:100vh}:root{--color-bg: #f3f4fa;--color-bg-surface: #ffffff;--color-text-primary: #2a2a2a;--color-text-secondary: #60636e;--color-text-muted: #8a8d99;--color-accent: #42487d;--color-accent-hover: #373d6b;--color-border: #d6d8e5;--color-focus-ring: rgba(66, 72, 125, .4);--space-1: 4px;--space-2: 8px;--space-3: 16px;--space-4: 24px;--space-5: 32px;--space-6: 48px;--space-7: 64px;--space-8: 96px}[data-theme=dark]{--color-bg: #333333;--color-bg-surface: #3d3d3d;--color-text-primary: #eaeaea;--color-text-secondary: #b5b5b5;--color-text-muted: #8f8f8f;--color-accent: #6a70b8;--color-accent-hover: #5a5fa3;--color-border: #4a4a4a;--color-focus-ring: rgba(106, 112, 184, .45)}body{font-family:Space Grotesk,system-ui,sans-serif;font-weight:400;font-size:1rem;line-height:1.65;letter-spacing:.01em;background-color:var(--color-bg);color:var(--color-text-primary);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}h1,h2,h3{font-weight:600;line-height:1.2;letter-spacing:-.01em;color:var(--color-accent);margin-top:0}h1{font-size:clamp(2.5rem,5vw,3.2rem);margin-bottom:var(--space-4)}h2{font-size:1.8rem;margin-bottom:var(--space-3)}h3{font-size:1.2rem;margin-bottom:var(--space-2)}p{margin-top:0;margin-bottom:var(--space-3);max-width:65ch;color:var(--color-text-primary)}a{color:var(--color-accent);text-decoration:underline;text-underline-offset:3px}a:hover{color:var(--color-accent-hover)}button{font-family:inherit;font-weight:500;letter-spacing:.02em;background-color:var(--color-accent);color:#fff;border:none;border-radius:6px;padding:var(--space-2) var(--space-4);cursor:pointer}button:hover{background-color:var(--color-accent-hover)}:focus-visible{outline:none;box-shadow:0 0 0 3px var(--color-focus-ring)}section{padding-block:var(--space-7)}.container{max-width:1100px;padding-left:var(--space-4);padding-right:var(--space-4);margin-left:auto;margin-right:auto}.card{background-color:var(--color-bg-surface);border:1px solid var(--color-border);border-radius:12px;padding:var(--space-5)}