*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--primary:#00d4ff;--primary-dim:#00d4ff26;--accent:#7b2ff7;--accent-dim:#7b2ff726;--bg:#0a0e1a;--bg-card:#ffffff0a;--bg-card-hover:#ffffff14;--text:#c8d6e5;--text-bright:#f0f4f8;--text-dim:#6b7a8d;--border:#ffffff14;--glow:0 0 40px #00d4ff26;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:16px;line-height:1.6}html{scroll-behavior:smooth}body{min-height:100vh;overflow-x:hidden}#root{flex-direction:column;min-height:100vh;display:flex}a{color:var(--primary);text-decoration:none;transition:color .2s}a:hover{color:var(--text-bright)}.bg-grid{z-index:-1;background-image:linear-gradient(#ffffff08 1px,#0000 1px),linear-gradient(90deg,#ffffff08 1px,#0000 1px);background-size:60px 60px;position:fixed;inset:0}.bg-glow{z-index:-1;filter:blur(120px);pointer-events:none;border-radius:50%;position:fixed}.bg-glow-1{background:#00d4ff14;width:600px;height:600px;top:-200px;left:-100px}.bg-glow-2{background:#7b2ff714;width:500px;height:500px;bottom:-100px;right:-100px}.nav{z-index:100;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);background:#0a0e1acc;justify-content:space-between;align-items:center;height:64px;padding:0 40px;display:flex;position:fixed;top:0;left:0;right:0}.nav-brand{color:var(--text-bright);align-items:center;gap:10px;font-size:20px;font-weight:600;display:flex}.nav-logo{width:32px;height:32px}.nav-links{gap:32px;list-style:none;display:flex}.nav-links a{color:var(--text-dim);letter-spacing:.5px;font-size:14px;transition:color .2s}.nav-links a:hover{color:var(--primary)}.hero{text-align:center;flex-direction:column;justify-content:center;align-items:center;min-height:100vh;padding:120px 24px 80px;display:flex;position:relative}.hero-eyeicon{width:80px;height:80px;margin-bottom:32px;animation:4s ease-in-out infinite float}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-12px)}}@keyframes pulse-ring{0%{opacity:.6;transform:scale(1)}to{opacity:0;transform:scale(1.8)}}.hero h1{color:var(--text-bright);margin-bottom:16px;font-size:clamp(36px,6vw,64px);font-weight:700;line-height:1.2}.hero h1 .gradient-text{background:linear-gradient(135deg, var(--primary), var(--accent));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.hero-sub{color:var(--text-dim);max-width:560px;margin-bottom:40px;font-size:clamp(16px,2.5vw,20px)}.hero-cta{background:linear-gradient(135deg, var(--primary), var(--accent));color:#fff;cursor:pointer;border:none;border-radius:50px;align-items:center;gap:8px;padding:14px 36px;font-size:16px;font-weight:600;text-decoration:none;transition:transform .2s,box-shadow .2s;display:inline-flex}.hero-cta:hover{color:#fff;transform:translateY(-2px);box-shadow:0 8px 30px #00d4ff4d}.scroll-hint{border:2px solid var(--text-dim);opacity:.4;border-radius:12px;justify-content:center;width:24px;height:40px;display:flex;position:absolute;bottom:32px}.scroll-dot{background:var(--primary);border-radius:2px;width:4px;height:8px;margin-top:6px;animation:2s ease-in-out infinite scroll-bounce}@keyframes scroll-bounce{0%,to{opacity:1;transform:translateY(0)}50%{opacity:.3;transform:translateY(12px)}}.section{width:100%;max-width:1100px;margin:0 auto;padding:100px 24px}.section-title{text-align:center;margin-bottom:60px}.section-title h2{color:var(--text-bright);margin-bottom:12px;font-size:clamp(28px,4vw,40px);font-weight:700}.section-title p{color:var(--text-dim);font-size:16px}.section-divider{background:linear-gradient(90deg, var(--primary), var(--accent));border:none;border-radius:2px;width:60px;height:3px;margin:16px auto 0}.features-grid{grid-template-columns:repeat(3,1fr);gap:24px;display:grid}.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:16px;padding:36px 28px;transition:background .3s,border-color .3s,transform .3s}.feature-card:hover{background:var(--bg-card-hover);border-color:#00d4ff33;transform:translateY(-4px)}.feature-icon{background:var(--primary-dim);border-radius:12px;justify-content:center;align-items:center;width:48px;height:48px;margin-bottom:20px;font-size:24px;display:flex}.feature-card:nth-child(2) .feature-icon{background:var(--accent-dim)}.feature-card:nth-child(3) .feature-icon{background:#ffaa001f}.feature-card h3{color:var(--text-bright);margin-bottom:10px;font-size:18px;font-weight:600}.feature-card p{color:var(--text-dim);font-size:14px;line-height:1.7}.courses-grid{grid-template-columns:repeat(3,1fr);gap:24px;display:grid}.course-card{background:var(--bg-card);border:1px solid var(--border);border-radius:16px;transition:background .3s,border-color .3s,transform .3s;overflow:hidden}.course-card:hover{background:var(--bg-card-hover);border-color:#00d4ff33;transform:translateY(-4px)}.course-cover{justify-content:center;align-items:center;height:160px;font-size:48px;display:flex;position:relative;overflow:hidden}.course-cover:before{content:"";opacity:.15;position:absolute;inset:0}.course-card:first-child .course-cover:before{background:linear-gradient(135deg,#00d4ff,#06f)}.course-card:nth-child(2) .course-cover:before{background:linear-gradient(135deg,#7b2ff7,#ff2daa)}.course-card:nth-child(3) .course-cover:before{background:linear-gradient(135deg,#fa0,#f50)}.course-body{padding:24px}.course-tag{background:var(--primary-dim);color:var(--primary);border-radius:20px;margin-bottom:12px;padding:3px 10px;font-size:12px;display:inline-block}.course-card:nth-child(2) .course-tag{background:var(--accent-dim);color:var(--accent)}.course-card:nth-child(3) .course-tag{color:#fa0;background:#ffaa001f}.course-body h3{color:var(--text-bright);margin-bottom:8px;font-size:17px;font-weight:600}.course-body p{color:var(--text-dim);font-size:13px;line-height:1.7}.stats-bar{border-top:1px solid var(--border);border-bottom:1px solid var(--border);justify-content:center;gap:80px;padding:60px 24px;display:flex}.stat-item{text-align:center}.stat-num{background:linear-gradient(135deg, var(--primary), var(--accent));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:clamp(32px,5vw,48px);font-weight:700;line-height:1.2}.stat-label{color:var(--text-dim);margin-top:4px;font-size:14px}.footer{text-align:center;border-top:1px solid var(--border);margin-top:auto;padding:40px 24px}.footer-brand{color:var(--text-bright);margin-bottom:8px;font-size:16px;font-weight:600}.footer-copy{color:var(--text-dim);margin-bottom:8px;font-size:13px}.footer-beian{font-size:13px}.footer-beian a{color:var(--text-dim);transition:color .2s}.footer-beian a:hover{color:var(--primary)}@media (width<=768px){.nav{padding:0 20px}.nav-links{display:none}.features-grid,.courses-grid{grid-template-columns:1fr}.stats-bar{flex-direction:column;gap:32px}.section{padding:60px 20px}}@media (width>=769px) and (width<=1024px){.features-grid,.courses-grid{grid-template-columns:repeat(2,1fr)}.stats-bar{gap:48px}}