*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-root:#050a14;--bg-deep:#060b1a;--bg-surface:#091325;--bg-card:#0b1933;--bg-card-hover:#0d1f3f;--bg-elevated:#0e2045;--bg-nav:#050a14d1;--accent:#2979ff;--accent-light:#448aff;--accent-cyan:#00e5ff;--accent-purple:#7c4dff;--accent-purple-light:#b388ff;--accent-gold:#ffd600;--accent-amber:#ffab00;--accent-green:#00e676;--accent-rose:#ff5252;--text-primary:#edf2fa;--text-secondary:#aab9d4;--text-tertiary:#679;--text-muted:#457;--border-ghost:#2979ff0f;--border-subtle:#2979ff1a;--border-card:#2979ff1f;--border-active:#2979ff4d;--border-glow:#2979ff73;--shadow-xs:0 1px 4px #0000004d;--shadow-sm:0 2px 12px #00000059;--shadow-md:0 8px 32px #00000073;--shadow-lg:0 16px 64px #00000080;--shadow-glow-sm:0 0 30px #2979ff14;--shadow-glow:0 0 60px #2979ff1f;--shadow-glow-lg:0 0 100px #2979ff26;--shadow-purple:0 0 60px #7c4dff1f;--shadow-cyan:0 0 40px #00e5ff14;--radius-xs:6px;--radius-sm:8px;--radius:12px;--radius-lg:16px;--radius-xl:20px;--radius-2xl:28px;--font:"Inter", -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans", sans-serif;--font-mono:"JetBrains Mono", "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;--ease-out:cubic-bezier(.16, 1, .3, 1);--ease-in-out:cubic-bezier(.65, 0, .35, 1);--ease-spring:cubic-bezier(.34, 1.56, .64, 1);--duration-fast:.15s;--duration:.3s;--duration-slow:.5s}body{font-family:var(--font);background:var(--bg-root);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.6}a{color:inherit;text-decoration:none}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--bg-root)}::-webkit-scrollbar-thumb{background:#2979ff40;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#2979ff66}@keyframes fadeInUp{0%{opacity:0;transform:translateY(40px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeInScale{0%{opacity:0;transform:scale(.94)}to{opacity:1;transform:scale(1)}}@keyframes glowPulse{0%,to{box-shadow:0 0 20px #2979ff14}50%{box-shadow:0 0 50px #2979ff2e}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}@keyframes borderGlow{0%,to{border-color:#2979ff26}50%{border-color:#2979ff66}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}@keyframes bgShift{0%{background-position:0%}50%{background-position:100%}to{background-position:0%}}.anim-fade-up{opacity:0;animation:fadeInUp .7s var(--ease-out) forwards}.glass{-webkit-backdrop-filter:blur(20px);border:1px solid var(--border-subtle);background:#0b1933a6}.section{padding:120px 32px;position:relative;overflow:hidden}.section-inner{z-index:1;max-width:1280px;margin:0 auto;position:relative}.section-tag{letter-spacing:2.5px;text-transform:uppercase;border-radius:20px;margin-bottom:20px;padding:6px 14px;font-size:11px;font-weight:700;display:inline-block}.section-title{color:var(--text-primary);text-align:center;letter-spacing:-1px;margin-bottom:16px;font-size:42px;font-weight:800;line-height:1.15}.section-sub{color:var(--text-secondary);text-align:center;max-width:640px;margin:0 auto 64px;font-size:17px;line-height:1.8}.btn{border-radius:var(--radius);cursor:pointer;transition:all var(--duration) var(--ease-out);border:none;justify-content:center;align-items:center;gap:8px;padding:14px 32px;font-size:15px;font-weight:700;display:inline-flex;position:relative;overflow:hidden}.btn-primary{color:#fff;background:linear-gradient(135deg,#2979ff 0%,#1a56db 100%);box-shadow:0 4px 24px #2979ff59}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 36px #2979ff80}.btn-outline{color:var(--accent);background:0 0;border:1.5px solid #2979ff59}.btn-outline:hover{border-color:var(--accent);background:#2979ff14}.btn-ghost{color:var(--text-secondary);background:0 0;border:1.5px solid #aab9d426}.btn-ghost:hover{border-color:var(--text-secondary);color:var(--text-primary)}.btn-lg{border-radius:14px;padding:18px 40px;font-size:16px}.grid-2{grid-template-columns:repeat(2,1fr);gap:20px;display:grid}.grid-3{grid-template-columns:repeat(3,1fr);gap:20px;display:grid}.grid-4{grid-template-columns:repeat(4,1fr);gap:20px;display:grid}.grid-auto{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;display:grid}@media (width<=1024px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}@media (width<=768px){.section{padding:80px 20px}.section-title{font-size:30px}.section-sub{margin-bottom:40px;font-size:15px}}.input{border:1px solid var(--border-card);border-radius:var(--radius);background:var(--bg-surface);width:100%;color:var(--text-primary);font-size:14px;font-family:var(--font);transition:border var(--duration-fast);outline:none;padding:14px 16px}.input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #2979ff1a}.input::placeholder{color:var(--text-muted)}