:root{--primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--primary-color: #667eea;--primary-hover: #5a6fd6;--secondary-color: #764ba2;--accent-color: #00d4aa;--accent-glow: 0 0 20px rgba(0, 212, 170, .4);--bg-dark: #0a0e17;--bg-card: rgba(20, 30, 48, .8);--bg-card-hover: rgba(30, 45, 70, .9);--text-primary: #ffffff;--text-secondary: rgba(255, 255, 255, .7);--text-muted: rgba(255, 255, 255, .5);--border-color: rgba(255, 255, 255, .1);--border-glow: rgba(102, 126, 234, .3);--shadow-soft: 0 4px 30px rgba(0, 0, 0, .3);--shadow-glow: 0 0 40px rgba(102, 126, 234, .2);--radius-sm: 8px;--radius-md: 16px;--radius-lg: 24px;--radius-xl: 32px;--spacing-xs: 8px;--spacing-sm: 16px;--spacing-md: 24px;--spacing-lg: 48px;--spacing-xl: 80px;--transition-fast: .2s ease;--transition-normal: .3s ease;--transition-slow: .5s ease}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:Noto Sans SC,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg-dark);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}body:before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;background:radial-gradient(ellipse 80% 50% at 20% -20%,rgba(102,126,234,.15) 0%,transparent 50%),radial-gradient(ellipse 60% 40% at 80% 100%,rgba(118,75,162,.1) 0%,transparent 50%),radial-gradient(ellipse 40% 60% at 50% 50%,rgba(0,212,170,.03) 0%,transparent 70%);pointer-events:none;z-index:-1}a{text-decoration:none;color:inherit;transition:var(--transition-fast)}img{max-width:100%;height:auto;display:block}ul,ol{list-style:none}.container{width:100%;max-width:1280px;margin:0 auto;padding:0 var(--spacing-md)}@media (max-width: 768px){.container{padding:0 var(--spacing-sm)}}.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 32px;background:var(--primary-gradient);color:var(--text-primary);font-size:16px;font-weight:600;border:none;border-radius:var(--radius-md);cursor:pointer;transition:var(--transition-normal);box-shadow:var(--shadow-soft)}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-glow)}.btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 32px;background:transparent;color:var(--text-primary);font-size:16px;font-weight:600;border:2px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;transition:var(--transition-normal);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.btn-secondary:hover{border-color:var(--primary-color);background:rgba(102,126,234,.1)}.btn-accent{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 32px;background:var(--accent-color);color:var(--bg-dark);font-size:16px;font-weight:700;border:none;border-radius:var(--radius-md);cursor:pointer;transition:var(--transition-normal)}.btn-accent:hover{transform:translateY(-2px);box-shadow:var(--accent-glow)}.glass-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);transition:var(--transition-normal)}.glass-card:hover{background:var(--bg-card-hover);border-color:var(--border-glow);transform:translateY(-4px);box-shadow:var(--shadow-glow)}.section-title{font-size:clamp(28px,5vw,48px);font-weight:700;background:var(--primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;text-align:center;margin-bottom:var(--spacing-sm)}.section-subtitle{font-size:18px;color:var(--text-secondary);text-align:center;max-width:600px;margin:0 auto var(--spacing-lg)}.tag{display:inline-block;padding:6px 14px;font-size:13px;font-weight:500;color:var(--accent-color);background:rgba(0,212,170,.1);border:1px solid rgba(0,212,170,.3);border-radius:20px}.gradient-text{background:var(--primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.glow{box-shadow:var(--shadow-glow)}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.6}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-30px)}to{opacity:1;transform:translate(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}.animate-float{animation:float 6s ease-in-out infinite}.animate-pulse{animation:pulse 2s ease-in-out infinite}.animate-fadeInUp{animation:fadeInUp .6s ease-out forwards}.animate-slideInLeft{animation:slideInLeft .6s ease-out forwards}.animate-scaleIn{animation:scaleIn .5s ease-out forwards}.delay-100{animation-delay:.1s}.delay-200{animation-delay:.2s}.delay-300{animation-delay:.3s}.delay-400{animation-delay:.4s}.delay-500{animation-delay:.5s}@media (max-width: 1024px){:root{--spacing-xl: 60px}}@media (max-width: 768px){:root{--spacing-lg: 32px;--spacing-xl: 48px}.btn-primary,.btn-secondary,.btn-accent{padding:12px 24px;font-size:15px}}@media (max-width: 480px){:root{--spacing-md: 16px;--spacing-lg: 24px}}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.hidden{display:none}.visible{visibility:visible}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-dark)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--primary-color)}