:root{--scroll-blur:0px;}*{box-sizing:border-box;}body{margin:0;font-family:'Segoe UI',Arial,'PingFang SC','Microsoft YaHei',sans-serif;background:#050924;color:#f7f9ff;min-height:100vh;overflow-x:hidden;line-height:1.65;letter-spacing:0.02em;}a{text-decoration:none;color:inherit;}img{max-width:100%;display:block;}header{position:sticky;top:0;z-index:999;background:rgba(5,9,36,0.75);backdrop-filter:blur(12px);box-shadow:0 8px 24px rgba(0,0,0,0.25);}header .container{display:flex;align-items:center;justify-content:space-between;padding:20px 0;}header .brand{font-weight:700;font-size:1.4rem;letter-spacing:0.1em;text-transform:uppercase;}nav.nav-links{display:flex;gap:28px;}nav.nav-links a{font-size:0.95rem;transition:color 0.3s ease;}nav.nav-links a:hover{color:#55f0ff;}button.menu-toggle{display:none;background:transparent;border:none;padding:0;cursor:pointer;}button.menu-toggle span{display:block;width:26px;height:2px;background:#f7f9ff;margin:6px 0;transition:transform 0.3s ease,opacity 0.3s ease;}button.menu-toggle.active span:nth-child(1){transform:translateY(8px) rotate(45deg);}button.menu-toggle.active span:nth-child(2){opacity:0;}button.menu-toggle.active span:nth-child(3){transform:translateY(-8px) rotate(-45deg);}main{position:relative;z-index:2;}section{padding:80px 0;}section.hero{display:flex;align-items:center;min-height:86vh;padding:120px 0 80px;}section.hero .container{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-items:center;gap:60px;}section.hero h1{font-size:3rem;margin:0 0 20px;letter-spacing:0.06em;}section.hero p.lead{font-size:1.15rem;color:rgba(247,249,255,0.82);margin-bottom:28px;}section.hero ul{list-style:none;margin:0;padding:0;display:grid;gap:14px;}section.hero li{display:flex;align-items:center;font-size:0.98rem;gap:10px;}section.hero li::before{content:'';width:10px;height:10px;border-radius:50%;background:linear-gradient(120deg,#37ff86,#00e0ff);}section.hero .hero-buttons{display:flex;flex-wrap:wrap;gap:16px;margin-top:32px;}a.primary-btn{padding:14px 26px;border-radius:999px;background:linear-gradient(120deg,#37ff86,#00e0ff);color:#020312;font-weight:600;box-shadow:0 12px 30px rgba(0,224,255,0.35);transition:transform 0.3s ease,box-shadow 0.3s ease;}a.primary-btn:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(0,224,255,0.45);}div.visual-gradient{position:relative;width:100%;height:420px;border-radius:28px;background:radial-gradient(circle at 20% 20%,rgba(0,224,255,0.55),transparent 55%),radial-gradient(circle at 80% 30%,rgba(55,255,134,0.4),transparent 60%),radial-gradient(circle at 50% 80%,rgba(0,163,255,0.45),transparent 65%);backdrop-filter:blur(6px);display:flex;justify-content:center;align-items:center;overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,0.45);}div.visual-gradient::before{content:'';position:absolute;width:70%;height:70%;border-radius:50%;background:rgba(255,255,255,0.04);filter:blur(20px);animation:pulse 8s ease-in-out infinite;}div.visual-gradient::after{content:'免费加速器';position:absolute;font-size:3.8rem;letter-spacing:0.28em;color:rgba(255,255,255,0.08);text-transform:uppercase;}@keyframes pulse{0%{transform:scale(0.9);}50%{transform:scale(1.05);}100%{transform:scale(0.9);}}.backdrop{position:fixed;inset:0;z-index:-2;overflow:hidden;pointer-events:none;} .backdrop::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(0,224,255,0.1),rgba(3,10,45,0.6));filter:blur(var(--scroll-blur));transition:filter 0.4s ease;} .orb{position:absolute;border-radius:50%;filter:blur(0);opacity:0.7;mix-blend-mode:screen;} .orb.one{width:360px;height:360px;background:radial-gradient(circle at 30% 30%,rgba(0,224,255,0.8),rgba(0,3,25,0));top:10%;left:-6%;animation:float1 18s infinite ease-in-out;} .orb.two{width:420px;height:420px;background:radial-gradient(circle at 70% 70%,rgba(76,255,182,0.75),rgba(0,3,25,0));bottom:-12%;right:-8%;animation:float2 22s infinite ease-in-out;} .orb.three{width:280px;height:280px;background:radial-gradient(circle at 50% 50%,rgba(0,160,255,0.65),rgba(0,3,25,0));top:35%;right:18%;animation:float3 16s infinite ease-in-out;} @keyframes float1{0%{transform:translate3d(0,0,0);}50%{transform:translate3d(40px,60px,0) scale(1.05);}100%{transform:translate3d(0,0,0);}}@keyframes float2{0%{transform:translate3d(0,0,0);}50%{transform:translate3d(-60px,-30px,0) scale(0.95);}100%{transform:translate3d(0,0,0);}}@keyframes float3{0%{transform:translate3d(0,0,0);}50%{transform:translate3d(30px,-50px,0) scale(1.08);}100%{transform:translate3d(0,0,0);}}.container{width:min(1200px,92%);margin:0 auto;}section.stats{padding:40px 0 20px;}section.stats .stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}section.stats .stat-card{padding:26px;border-radius:20px;background:rgba(255,255,255,0.04);box-shadow:0 12px 32px rgba(0,0,0,0.35);backdrop-filter:blur(10px);transition:transform 0.3s ease,box-shadow 0.3s ease;}section.stats .stat-card:hover{transform:translateY(-6px);box-shadow:0 18px 44px rgba(0,0,0,0.45);}section.stats .stat-card h3{margin:0;font-size:2rem;}section.stats .stat-card p{margin:12px 0 0;color:rgba(247,249,255,0.74);}section.features .section-title{text-align:center;margin-bottom:48px;}section.features .section-title h2{font-size:2.2rem;margin-bottom:12px;}section.features .section-title p{max-width:720px;margin:0 auto;color:rgba(247,249,255,0.78);}section.features .feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;}section.features .feature-card{padding:32px;border-radius:22px;background:rgba(7,16,56,0.92);box-shadow:0 18px 40px rgba(0,0,0,0.35);border:1px solid rgba(0,224,255,0.12);transition:transform 0.35s ease,box-shadow 0.35s ease;}section.features .feature-card:hover{transform:translateY(-8px);box-shadow:0 24px 58px rgba(0,0,0,0.45);}section.features .feature-card h3{margin:0 0 16px;font-size:1.28rem;}section.features .feature-card p{margin:0;color:rgba(247,249,255,0.78);}section.download{padding:80px 0;background:linear-gradient(140deg,rgba(0,224,255,0.12),rgba(2,8,40,0.75));}section.download .download-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}a.platform-button{display:flex;flex-direction:column;align-items:flex-start;gap:10px;padding:22px;border-radius:18px;background:rgba(5,12,42,0.9);border:1px solid rgba(255,255,255,0.08);box-shadow:0 16px 36px rgba(0,0,0,0.4);transition:transform 0.3s ease,box-shadow 0.3s ease;}a.platform-button span.label{font-size:0.9rem;text-transform:uppercase;letter-spacing:0.18em;color:#55f0ff;}a.platform-button strong{font-size:1.24rem;}a.platform-button:hover{transform:translateY(-8px);box-shadow:0 26px 56px rgba(0,224,255,0.35);}section.product-intro{padding:90px 0;}section.product-intro .container{max-width:920px;}section.product-intro h2{font-size:2.1rem;margin-bottom:24px;text-align:center;}section.product-intro p{color:rgba(247,249,255,0.82);text-indent:2em;margin-bottom:22px;}section.timeline{padding:80px 0;}section.timeline .timeline-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}section.timeline .timeline-card{padding:28px;border-radius:20px;background:rgba(6,14,46,0.92);border:1px solid rgba(0,224,255,0.1);position:relative;overflow:hidden;}section.timeline .timeline-card::before{content:'';position:absolute;top:-40px;right:-40px;width:120px;height:120px;border-radius:50%;background:radial-gradient(circle,rgba(0,224,255,0.25),transparent 60%);}section.timeline .timeline-card h4{margin:0 0 12px;font-size:1.15rem;}section.timeline .timeline-card p{margin:0;color:rgba(247,249,255,0.78);}section.cta{padding:100px 0;text-align:center;}section.cta .cta-box{padding:50px;border-radius:26px;background:linear-gradient(135deg,rgba(0,224,255,0.15),rgba(0,5,28,0.9));box-shadow:0 24px 60px rgba(0,0,0,0.45);}section.cta h2{font-size:2.4rem;margin:0 0 18px;}section.cta p{max-width:720px;margin:0 auto 32px;color:rgba(247,249,255,0.82);}footer{padding:40px 0;background:rgba(3,8,28,0.95);border-top:1px solid rgba(255,255,255,0.08);}footer .footer-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}footer h5{margin:0 0 12px;font-size:1.05rem;}footer p,footer a{color:rgba(247,249,255,0.7);font-size:0.92rem;}footer .footer-bottom{margin-top:32px;font-size:0.85rem;color:rgba(247,249,255,0.55);}@media(max-width:1200px){section.hero .container{grid-template-columns:minmax(0,1fr);}section.hero{padding-top:140px;text-align:center;}section.hero ul{justify-items:center;}section.hero .hero-buttons{justify-content:center;}div.visual-gradient{height:360px;margin:0 auto;}}@media(max-width:992px){nav.nav-links{position:absolute;top:100%;right:0;width:220px;background:rgba(5,12,42,0.95);flex-direction:column;padding:20px;border-radius:14px;transform:scaleY(0);transform-origin:top;opacity:0;transition:transform 0.3s ease,opacity 0.3s ease;}nav.nav-links.open{transform:scaleY(1);opacity:1;}nav.nav-links a{padding:10px 0;}button.menu-toggle{display:block;}section.stats .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));}section.features .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr));}section.download .download-grid{grid-template-columns:repeat(2,minmax(0,1fr));}section.timeline .timeline-grid{grid-template-columns:repeat(2,minmax(0,1fr));}footer .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}@media(max-width:640px){header .container{padding:16px 0;}section{padding:60px 0;}section.hero h1{font-size:2.3rem;}section.hero p.lead{font-size:1rem;}section.stats .stats-grid{grid-template-columns:minmax(0,1fr);}section.features .feature-grid{grid-template-columns:minmax(0,1fr);}section.download .download-grid{grid-template-columns:minmax(0,1fr);}section.timeline .timeline-grid{grid-template-columns:minmax(0,1fr);}footer .footer-grid{grid-template-columns:minmax(0,1fr);}section.cta h2{font-size:2rem;}}