:root{--bg-primary:#0a0f1a;--bg-secondary:#0f1629;--bg-card:#0f1629b3;--bg-card-hover:#141e37d9;--bg-overlay:#0a0f1ad9;--neon:#0f8;--neon-dim:#00cc6a;--cyan:#00d4ff;--cyan-dim:#00a8cc;--gradient-primary:linear-gradient(135deg, var(--neon), var(--cyan));--gradient-neon:linear-gradient(135deg, #0f8, #00cc6a);--gradient-glow:radial-gradient(circle, #00ff8826, #00d4ff0d, transparent);--text-primary:#e8edf5;--text-secondary:#b0bec5;--text-muted:#7a8ba8;--text-dim:#5a6b82;--border-subtle:#00ff8814;--border-light:#00ff8826;--border-cyan:#00d4ff26;--border-white:#ffffff14;--glow-neon:0 0 20px #00ff884d;--glow-neon-strong:0 0 30px #00ff8880, 0 0 60px #0f83;--glow-cyan:0 0 20px #00d4ff4d;--glow-text:0 0 40px #00ff884d;--shadow-sm:0 2px 8px #0000004d;--shadow-md:0 4px 16px #0006;--shadow-lg:0 8px 32px #00000080;--shadow-xl:0 16px 48px #0009;--shadow-neon:0 4px 20px #0f83;--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--radius-xl:20px;--radius-full:9999px;--space-xs:.5rem;--space-sm:.75rem;--space-md:1rem;--space-lg:1.5rem;--space-xl:2rem;--space-2xl:3rem;--space-3xl:4rem;--font-sans:"PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;--font-mono:"Courier New", "SF Mono", "Fira Code", monospace;--ease-smooth:cubic-bezier(.4, 0, .2, 1);--ease-bounce:cubic-bezier(.34, 1.56, .64, 1);--transition-fast:.2s var(--ease-smooth);--transition-base:.3s var(--ease-smooth);--transition-slow:.5s var(--ease-smooth);--container-max:1320px;--nav-height:72px;--section-padding:5rem 0}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.6;overflow-x:hidden}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.2}a{color:inherit;transition:color var(--transition-fast);text-decoration:none}a:hover{color:var(--neon)}ul{list-style:none}button{cursor:pointer;background:0 0;border:none;font-family:inherit}img{max-width:100%;display:block}.container{max-width:var(--container-max);margin:0 auto;padding:0 1.5rem}.skip-link{background:var(--neon);color:var(--bg-primary);border-radius:var(--radius-sm);z-index:9999;transition:top var(--transition-fast);padding:.5rem 1rem;font-weight:600;position:absolute;top:-100%;left:50%;transform:translate(-50%)}.skip-link:focus{top:1rem}.glass{background:var(--bg-card);-webkit-backdrop-filter:blur(20px)}.btn{border-radius:var(--radius-md);transition:all var(--transition-base);letter-spacing:.01em;white-space:nowrap;justify-content:center;align-items:center;gap:.5rem;padding:.75rem 1.5rem;font-size:.95rem;font-weight:600;display:inline-flex}.btn-primary{background:var(--gradient-neon);color:var(--bg-primary);box-shadow:var(--shadow-neon)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px #0f86}.btn-secondary{color:var(--text-primary);border:1px solid var(--border-white);background:0 0}.btn-secondary:hover{background:#ffffff08;border-color:#ffffff40;transform:translateY(-2px)}.btn-outline-neon{color:var(--neon);border:1px solid var(--border-light);background:0 0}.btn-outline-neon:hover{background:var(--neon);color:var(--bg-primary);box-shadow:var(--glow-neon)}.btn-outline-cyan{color:var(--cyan);border:1px solid var(--border-cyan);background:0 0}.btn-outline-cyan:hover{background:var(--cyan);color:var(--bg-primary);box-shadow:var(--glow-cyan)}.section-header{text-align:center;margin-bottom:3rem}.section-header .section-tag{border:1px solid var(--border-light);border-radius:var(--radius-full);color:var(--neon);letter-spacing:2px;text-transform:uppercase;background:#00ff880f;align-items:center;gap:6px;margin-bottom:1rem;padding:5px 14px;font-size:12px;display:inline-flex}.section-header .section-tag .tag-bar{background:var(--neon);border-radius:2px;width:3px;height:12px;animation:1.5s infinite tagPulse}@keyframes tagPulse{0%,to{opacity:1}50%{opacity:.3}}.section-header h2{color:var(--text-primary);margin-bottom:.75rem;font-size:2.2rem}.section-header h2 .highlight{color:var(--neon)}.section-header p{color:var(--text-muted);max-width:560px;margin:0 auto;font-size:1.05rem}.reveal{opacity:0;transition:opacity .6s var(--ease-smooth), transform .6s var(--ease-smooth);transform:translateY(30px)}.reveal.visible{opacity:1;transform:translateY(0)}.reveal-delay-1{transition-delay:.1s}.reveal-delay-2{transition-delay:.2s}.reveal-delay-3{transition-delay:.3s}.reveal-delay-4{transition-delay:.4s}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}:focus-visible{outline:2px solid var(--neon);outline-offset:2px}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}