:root,[data-theme=dark]{--bg-primary: #0f1117;--bg-secondary: #161822;--bg-surface: rgba(22, 24, 34, .7);--bg-surface-hover: rgba(22, 24, 34, .9);--bg-glass: rgba(255, 255, 255, .04);--bg-glass-hover: rgba(255, 255, 255, .07);--accent: #3b82f6;--accent-light: #60a5fa;--accent-lighter: #93c5fd;--accent-muted: rgba(59, 130, 246, .12);--accent-glow: rgba(59, 130, 246, .2);--text-primary: #f0f2f5;--text-secondary: #9ca3b0;--text-muted: #6b7280;--border-subtle: rgba(255, 255, 255, .06);--border-hover: rgba(59, 130, 246, .3);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .3);--shadow-md: 0 4px 16px rgba(0, 0, 0, .35);--shadow-lg: 0 12px 40px rgba(0, 0, 0, .4);--shadow-glow: 0 0 24px rgba(59, 130, 246, .12);--header-bg: rgba(15, 17, 23, .8);--progress-gradient: linear-gradient(90deg, var(--accent), var(--accent-light));color-scheme:dark}[data-theme=light]{--bg-primary: #fafbfc;--bg-secondary: #f1f3f5;--bg-surface: rgba(255, 255, 255, .8);--bg-surface-hover: rgba(255, 255, 255, .95);--bg-glass: rgba(0, 0, 0, .02);--bg-glass-hover: rgba(0, 0, 0, .04);--accent: #2563eb;--accent-light: #3b82f6;--accent-lighter: #60a5fa;--accent-muted: rgba(37, 99, 235, .08);--accent-glow: rgba(37, 99, 235, .12);--text-primary: #111827;--text-secondary: #4b5563;--text-muted: #9ca3af;--border-subtle: rgba(0, 0, 0, .06);--border-hover: rgba(37, 99, 235, .25);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);--shadow-md: 0 4px 16px rgba(0, 0, 0, .08);--shadow-lg: 0 12px 40px rgba(0, 0, 0, .1);--shadow-glow: 0 0 24px rgba(37, 99, 235, .08);--header-bg: rgba(250, 251, 252, .85);--progress-gradient: linear-gradient(90deg, var(--accent), var(--accent-light));color-scheme:light}:root{--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;--section-padding: 90px;--blur-sm: 8px;--blur-md: 16px;--blur-lg: 24px;--ease-out-expo: cubic-bezier(.16, 1, .3, 1);--ease-spring: cubic-bezier(.34, 1.56, .64, 1);--transition-fast: .2s var(--ease-out-expo);--transition-normal: .4s var(--ease-out-expo);--transition-slow: .6s var(--ease-out-expo)}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-primary);line-height:1.7;overflow-x:hidden;transition:background-color .3s ease,color .3s ease}::selection{background:var(--accent-muted);color:var(--text-primary)}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:var(--accent);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--accent-light)}section{padding:var(--section-padding) 0;position:relative}.container{max-width:1100px;margin:0 auto;padding:0 24px}.section-title{font-size:clamp(26px,3.5vw,34px);font-weight:700;margin-bottom:56px;color:var(--text-primary);position:relative;display:inline-flex;align-items:center;gap:14px;letter-spacing:-.02em}.section-title:before{content:"";display:inline-block;width:36px;height:3px;background:var(--accent);border-radius:2px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;font-size:14px;font-weight:600;font-family:var(--font-sans);text-decoration:none;cursor:pointer;border:1px solid var(--border-hover);border-radius:10px;color:var(--accent);background:var(--accent-muted);overflow:hidden;transition:all var(--transition-normal)}.btn:hover{background:var(--accent);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-glow);border-color:var(--accent)}.glass-card{background:var(--bg-glass);border:1px solid var(--border-subtle);border-radius:14px;backdrop-filter:blur(var(--blur-md));-webkit-backdrop-filter:blur(var(--blur-md));transition:all var(--transition-normal)}.glass-card:hover{background:var(--bg-glass-hover);border-color:var(--border-hover);box-shadow:var(--shadow-glow)}@media screen and (max-width: 768px){:root{--section-padding: 64px}.section-title{margin-bottom:40px}}@media screen and (max-width: 480px){:root{--section-padding: 48px}.section-title{margin-bottom:32px}}