:root{--bg-primary:#121214;--bg-secondary:#1a1a1e;--bg-tertiary:#16161a;--bg-overlay:rgba(18,18,20,0.72);--bg-dropdown:#1c1c22;--text-primary:#f5f6fa;--text-secondary:#b6b8c4;--text-muted:#7d8090;--accent-primary:#7c9cff;--accent-secondary:#4ecdc4;--accent-text:#9db3ff;--accent-bg-subtle:rgba(124,156,255,0.1);--border-default:rgba(255,255,255,0.08);--border-translucent:rgba(255,255,255,0.06);--color-signal:#ff7a7a;color-scheme:dark}[data-theme=light]{--bg-primary:#f7f8fc;--bg-secondary:#ffffff;--bg-tertiary:#eef0f7;--bg-overlay:rgba(255,255,255,0.78);--bg-dropdown:#ffffff;--text-primary:#14151a;--text-secondary:#414455;--text-muted:#6b6f80;--accent-primary:#4a6cf0;--accent-secondary:#1fb5ab;--accent-text:#3f5fe0;--accent-bg-subtle:rgba(74,108,240,0.08);--border-default:rgba(0,0,0,0.1);--border-translucent:rgba(0,0,0,0.06);--color-signal:#d43c3c;color-scheme:light}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg-primary);color:var(--text-primary);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;scroll-behavior:smooth}a{color:inherit;text-decoration:none}:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border-radius:10px;font-weight:600;font-size:.95rem;text-decoration:none;cursor:pointer;border:1px solid transparent;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;white-space:nowrap}.btn-lg{padding:14px 28px;font-size:1.05rem}.btn-primary{background:linear-gradient(135deg,var(--accent-primary) 0,var(--accent-secondary) 100%);color:#0c0c10}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(124,156,255,.35)}.btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn-secondary{background:transparent;color:var(--text-primary);border-color:var(--border-default)}.btn-secondary:hover{border-color:var(--accent-primary);color:var(--accent-text);background:var(--accent-bg-subtle)}.btn-glow{position:relative;overflow:hidden}.btn-content{position:relative;z-index:1}.btn-shine{position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.25),transparent);transition:left .5s ease}.btn-glow:hover .btn-shine{left:100%}.btn-block{display:flex;width:100%}h1,h2,h3,h4{color:var(--text-primary);letter-spacing:-.02em}.section-header{text-align:center;max-width:720px;margin:0 auto 56px}.section-header h2{font-size:2.4rem;font-weight:800;margin:14px 0 12px}.section-header p{color:var(--text-secondary);font-size:1.1rem;line-height:1.6;margin:0}.section-tag{display:inline-block;padding:6px 14px;background:var(--accent-bg-subtle);border:1px solid rgba(124,156,255,.3);border-radius:6px;color:var(--accent-text);font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em}.section-tag-accent{background:rgba(78,205,196,.1);border-color:rgba(78,205,196,.3);color:var(--accent-secondary)}@media (max-width:768px){.section-header h2{font-size:1.9rem}}@media (prefers-reduced-motion:reduce){body,html{scroll-behavior:auto}*,:after,:before{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}.btn-primary:hover,.btn:hover{transform:none}}