:root{
  --primary:#3B6EF6;
  --primary-600:#2F5CE0;
  --dark:#131D33;
  --dark-2:#1B2A4A;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --border:#E5EBF4;
  --text:#1B2740;
  --text-2:#5A6A8C;
  --accent:#FF9F1C;
  --radius:16px;
  --radius-sm:12px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:74px;}
body{font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}

.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:999px;font-weight:600;font-size:15px;padding:12px 26px;cursor:pointer;transition:transform .25s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease;}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-600);transform:translateY(-2px);box-shadow:0 10px 24px rgba(59,110,246,.35);}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.4);}
.btn-ghost:hover{background:rgba(255,255,255,.18);transform:translateY(-2px);}
.btn-dl{padding:8px 18px;font-size:13px;}
.btn-lg{padding:14px 34px;font-size:16px;}

.header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--border);transition:box-shadow .3s ease;}
.header.scrolled{box-shadow:0 4px 16px rgba(22,42,90,.08);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;}
.logo{display:flex;align-items:center;gap:9px;font-size:20px;font-weight:800;color:var(--text);white-space:nowrap;}
.logo-mark{width:30px;height:30px;flex:none;border-radius:9px;background:var(--primary);color:#fff;display:grid;place-items:center;font-size:17px;font-weight:800;}
.nav{display:flex;align-items:center;gap:2px;}
.nav a{padding:8px 12px;font-size:14px;color:var(--text-2);border-radius:9px;transition:color .2s ease,background .2s ease;}
.nav a:hover{color:var(--primary);background:rgba(59,110,246,.08);}
.nav a.active{color:var(--primary);font-weight:600;background:rgba(59,110,246,.08);}

.hero{background:radial-gradient(900px 480px at 12% -10%,rgba(59,110,246,.4),transparent 60%),radial-gradient(700px 420px at 92% 110%,rgba(255,159,28,.16),transparent 60%) var(--dark);color:#fff;padding:84px 0 96px;}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;}
.hero h1{font-size:44px;line-height:1.25;font-weight:800;}
.ver{display:inline-block;vertical-align:middle;margin-left:10px;font-size:15px;font-weight:600;padding:3px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.35);color:rgba(255,255,255,.92);background:rgba(255,255,255,.08);}
.hero-desc{font-size:16px;line-height:2;color:rgba(255,255,255,.82);max-width:520px;margin-top:22px;}
.hero-btns{display:flex;gap:16px;margin-top:34px;}
.hero-img img{width:100%;max-width:320px;margin-left:auto;border-radius:24px;background:rgba(255,255,255,.06);box-shadow:0 24px 60px rgba(0,0,0,.35);}

.works,.intro,.features,.compare,.reviews,.updates,.faq,.data{padding:88px 0;}
.sec-title{font-size:30px;font-weight:800;color:var(--text);text-align:center;}
.sec-title.light{color:#fff;}
.sec-sub{font-size:15px;color:var(--text-2);text-align:center;margin-top:10px;margin-bottom:46px;}
.sec-sub.light{color:rgba(255,255,255,.68);}

.works-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.work-card,.feature-card,.review-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);transition:transform .3s ease,box-shadow .3s ease;}
.work-card:hover,.feature-card:hover,.review-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(22,42,90,.12);}
.work-card{overflow:hidden;}
.work-card img{width:100%;background:var(--bg);}
.work-info{padding:14px 16px 18px;display:flex;align-items:center;justify-content:space-between;gap:10px;}
.work-info h3{font-size:16px;font-weight:700;color:var(--text);}
.work-tag{flex:none;font-size:12px;color:var(--primary);background:rgba(59,110,246,.09);border-radius:999px;padding:3px 10px;}

.intro-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.intro-text .sec-title{text-align:left;}
.intro-text p{font-size:15.5px;color:var(--text-2);line-height:2;margin-top:18px;}
.intro-points{list-style:none;display:grid;gap:16px;}
.intro-points li{display:flex;align-items:flex-start;gap:14px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:18px 20px;transition:transform .3s ease,box-shadow .3s ease;}
.intro-points li:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(22,42,90,.1);}
.point-ico{flex:none;width:26px;height:26px;border-radius:50%;background:rgba(59,110,246,.12);color:var(--primary);display:grid;place-items:center;font-size:13px;font-weight:800;margin-top:2px;}
.intro-points strong{display:block;font-size:16px;font-weight:700;color:var(--text);}
.intro-points p{font-size:14px;color:var(--text-2);margin-top:2px;}

.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.feature-card{padding:30px 28px;}
.f-icon{width:52px;height:52px;border-radius:14px;background:rgba(59,110,246,.1);color:var(--primary);display:grid;place-items:center;margin-bottom:18px;}
.f-icon svg{width:26px;height:26px;}
.feature-card h3{font-size:18px;font-weight:700;color:var(--text);}
.feature-card p{font-size:14px;color:var(--text-2);margin-top:8px;line-height:1.8;}

.cmp{display:grid;grid-template-columns:120px repeat(3,1fr);background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;}
.cmp>div{display:flex;align-items:center;justify-content:center;text-align:center;padding:15px 12px;font-size:14px;color:var(--text-2);border-bottom:1px solid var(--border);}
.cmp>div:nth-child(4n+1),.cmp>div:nth-child(4n+2),.cmp>div:nth-child(4n+3){border-right:1px solid var(--border);}
.cmp>div:nth-child(n+25){border-bottom:0;}
.cmp .head{background:var(--dark);color:#fff;font-size:15px;font-weight:600;}
.cmp .head.c-main{background:var(--primary);}
.cmp .row-label{justify-content:flex-start;text-align:left;font-weight:600;color:var(--text);}
.cmp .good{background:rgba(59,110,246,.06);color:#2457D6;font-weight:600;}
.cmp-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:thin;scrollbar-color:#C9D4E8 transparent;}
.cmp-scroll::-webkit-scrollbar{height:8px;}
.cmp-scroll::-webkit-scrollbar-thumb{background:#C9D4E8;border-radius:999px;}
.cmp-scroll::-webkit-scrollbar-track{background:transparent;}
.cmp-hint{display:none;text-align:center;font-size:12px;color:var(--text-2);margin-top:12px;}

.data{background:radial-gradient(800px 420px at 50% 0%,rgba(59,110,246,.3),transparent 65%) var(--dark);}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.data-item{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:34px 20px;text-align:center;transition:transform .3s ease,background .3s ease;}
.data-item:hover{transform:translateY(-4px);background:rgba(255,255,255,.09);}
.num{font-size:44px;font-weight:800;color:#fff;line-height:1.2;}
.num span{color:var(--accent);font-size:.55em;margin-left:3px;}
.label{font-size:14px;color:rgba(255,255,255,.72);margin-top:10px;}

.reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.review-card{padding:24px;}
.review-head{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.avatar{flex:none;width:44px;height:44px;border-radius:50%;color:#fff;display:grid;place-items:center;font-size:17px;font-weight:700;}
.a1{background:var(--primary);}
.a2{background:#FF9F1C;}
.a3{background:#2FAE7B;}
.a4{background:#E8683F;}
.a5{background:#3E9BD9;}
.a6{background:#8A63E8;}
.review-meta .name{font-size:15px;font-weight:700;color:var(--text);}
.stars{font-size:13px;color:var(--accent);letter-spacing:2px;margin-top:2px;}
.review-text{font-size:14px;color:var(--text-2);line-height:1.9;}

.update-card{max-width:760px;margin:0 auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:34px 36px;}
.update-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:20px;border-bottom:1px solid var(--border);}
.update-ver{font-size:26px;font-weight:800;color:var(--text);display:flex;align-items:center;gap:12px;}
.badge{font-size:12px;font-weight:600;color:#fff;background:var(--accent);border-radius:999px;padding:3px 10px;}
.update-date{font-size:14px;color:var(--text-2);}
.update-list{list-style:none;margin-top:20px;display:grid;gap:13px;}
.update-list li{position:relative;padding-left:26px;font-size:15px;color:var(--text);}
.update-list li::before{content:"";position:absolute;left:4px;top:9px;width:8px;height:8px;border-radius:50%;background:var(--primary);}

.faq-list{max-width:760px;margin:0 auto;display:grid;gap:14px;}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;transition:box-shadow .3s ease,border-color .3s ease;}
.faq-item.open{border-color:rgba(59,110,246,.45);box-shadow:0 8px 22px rgba(22,42,90,.08);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:19px 22px;font-size:16px;font-weight:600;color:var(--text);background:none;border:0;cursor:pointer;text-align:left;font-family:inherit;}
.faq-icon{position:relative;flex:none;width:18px;height:18px;}
.faq-icon::before{content:"";position:absolute;top:50%;left:0;right:0;height:2px;margin-top:-1px;border-radius:2px;background:var(--primary);}
.faq-icon::after{content:"";position:absolute;left:50%;top:0;bottom:0;width:2px;margin-left:-1px;border-radius:2px;background:var(--primary);transition:transform .3s ease;}
.faq-item.open .faq-icon::after{transform:rotate(90deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;}
.faq-a-inner{padding:0 22px 20px;}
.faq-a-inner p{font-size:14.5px;color:var(--text-2);line-height:1.9;}

.download{background:radial-gradient(820px 520px at 50% 0%,rgba(59,110,246,.4),transparent 65%) var(--dark);color:#fff;text-align:center;padding:96px 0;}
.dl-inner{display:flex;flex-direction:column;align-items:center;}
.dl-title{font-size:42px;font-weight:800;line-height:1.3;}
.dl-meta{font-size:14px;color:rgba(255,255,255,.75);margin-top:18px;letter-spacing:.5px;}
.dl-btns{display:flex;gap:18px;margin-top:34px;}
.dl-tip{font-size:15px;color:rgba(255,255,255,.82);margin-top:30px;}

.footer{background:var(--dark-2);color:rgba(255,255,255,.7);text-align:center;padding:26px 0;font-size:13px;}
.footer a{color:rgba(255,255,255,.9);}

.back-top{position:fixed;right:24px;bottom:32px;z-index:99;width:44px;height:44px;border:0;border-radius:50%;background:var(--primary);color:#fff;font-size:18px;cursor:pointer;display:grid;place-items:center;opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease,transform .3s ease,background .3s ease;box-shadow:0 8px 20px rgba(59,110,246,.35);}
.back-top.show{opacity:1;visibility:visible;}
.back-top:hover{background:var(--primary-600);transform:translateY(-3px);}

@media (max-width:1024px){
  .hero h1{font-size:38px;}
  .sec-title{font-size:27px;}
  .cmp{grid-template-columns:104px repeat(3,1fr);}
}

@media (max-width:900px){
  .nav{display:none;}
  .works-grid{grid-template-columns:repeat(2,1fr);}
  .features-grid{grid-template-columns:repeat(2,1fr);}
  .reviews-grid{grid-template-columns:repeat(2,1fr);}
  .data-grid{grid-template-columns:repeat(2,1fr);}
  .intro-grid{grid-template-columns:1fr;gap:36px;}
  .cmp{grid-template-columns:96px repeat(3,1fr);}
}

@media (max-width:640px){
  .container{padding:0 20px;}
  .works,.intro,.features,.compare,.reviews,.updates,.faq,.data{padding:56px 0;}
  .hero{padding:44px 0 56px;}
  .hero-inner{grid-template-columns:1fr;gap:0;text-align:center;}
  .hero h1{font-size:30px;}
  .ver{font-size:13px;padding:2px 10px;}
  .hero-desc{font-size:15px;margin-top:16px;}
  .hero-btns{flex-direction:column;width:100%;margin-top:28px;}
  .hero-btns .btn{width:100%;}
  .hero-img{margin-top:28px;}
  .hero-img img{max-width:280px;margin:0 auto;}
  .works-grid{grid-template-columns:1fr;}
  .features-grid{grid-template-columns:1fr;}
  .reviews-grid{grid-template-columns:1fr;}
  .sec-title{font-size:24px;}
  .sec-sub{font-size:14px;margin-bottom:32px;}
  .cmp-scroll{padding-bottom:4px;}
  .cmp{min-width:600px;grid-template-columns:120px repeat(3,1fr);}
  .cmp-hint{display:block;}
  .num{font-size:34px;}
  .data-item{padding:26px 14px;}
  .update-card{padding:26px 22px;}
  .update-ver{font-size:22px;}
  .update-head{flex-direction:column;align-items:flex-start;gap:8px;}
  .dl-title{font-size:30px;}
  .dl-meta{font-size:12px;white-space:nowrap;}
  .dl-btns{flex-direction:column;width:100%;margin-top:28px;}
  .dl-btns .btn{width:100%;}
  .dl-tip{font-size:14px;margin-top:26px;}
  .back-top{right:16px;bottom:20px;}
}