:root{
  --primary:#6C5CE7;
  --primary-dark:#5747D1;
  --primary-soft:#EEECFD;
  --dark:#221D3E;
  --dark-2:#2B2551;
  --bg:#F7F6FE;
  --card:#FFFFFF;
  --border:#E8E5F7;
  --text:#2B2842;
  --text-sub:#66617C;
  --radius:16px;
  --nav-h:70px;
  --shadow:0 10px 30px rgba(108,92,231,.12);
  --shadow-hover:0 16px 42px rgba(108,92,231,.2);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:var(--nav-h)}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
ul{list-style:none}
button{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

.nav{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--nav-h);background:rgba(255,255,255,.94);border-bottom:1px solid var(--border);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.nav-inner{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:12px}
.logo{display:flex;align-items:center;gap:8px;flex-shrink:0}
.logo-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--primary),#9A8CFF);color:#fff;font-size:17px;font-weight:800;display:flex;align-items:center;justify-content:center}
.logo-name{font-size:24px;font-weight:800;color:var(--dark);letter-spacing:1px}
.logo-badge{font-size:11px;font-weight:700;color:var(--primary);background:var(--primary-soft);border:1px solid var(--border);padding:2px 8px;border-radius:999px}
.menu{display:flex;align-items:center;gap:2px}
.menu a{font-size:14px;font-weight:500;color:var(--text-sub);padding:7px 10px;border-radius:8px;white-space:nowrap;transition:color .2s,background .2s}
.menu a:hover{color:var(--primary);background:var(--primary-soft)}
.menu a.active{color:var(--primary);font-weight:700}
.nav-download{font-size:13px;font-weight:600;color:#fff;background:var(--primary);padding:7px 15px;border-radius:999px;white-space:nowrap;flex-shrink:0;transition:background .2s,transform .2s}
.nav-download:hover{background:var(--primary-dark);transform:translateY(-1px)}

.hero{padding:calc(var(--nav-h) + 56px) 0 72px;background:linear-gradient(180deg,var(--primary-soft) 0%,var(--bg) 100%);overflow:hidden}
.hero-inner{display:flex;align-items:center;justify-content:space-between;gap:56px}
.hero-text{flex:1;max-width:600px}
.hero-text h1{font-size:42px;font-weight:800;line-height:1.3;color:var(--dark);letter-spacing:.5px}
.ver{display:inline-block;vertical-align:middle;margin-left:10px;font-size:15px;font-weight:700;color:var(--primary);background:#fff;border:1px solid var(--border);padding:4px 12px;border-radius:999px}
.hero-desc{margin:20px 0 34px;font-size:16px;line-height:1.9;color:var(--text-sub)}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:13px 30px;font-size:15px;font-weight:600;border-radius:12px;border:1px solid transparent;cursor:pointer;transition:transform .25s,box-shadow .25s,background .25s}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 22px rgba(108,92,231,.3)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px)}
.btn-outline{background:#fff;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary-soft);transform:translateY(-2px)}
.hero-poster{flex:0 0 350px}
.hero-poster img{width:100%;height:auto;border-radius:20px;box-shadow:var(--shadow-hover);border:1px solid var(--border)}

.section{padding:84px 0}
.section-soft{background:var(--card);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{max-width:680px;margin:0 auto 44px;text-align:center}
.section-head h2{font-size:32px;font-weight:800;color:var(--dark)}
.section-head p{margin-top:10px;font-size:15px;color:var(--text-sub)}

.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,box-shadow .3s}
.work-card:hover,.feature-card:hover,.review-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.work-card{overflow:hidden}
.work-card img{width:100%;height:auto}

.intro-body{max-width:820px;margin:0 auto;text-align:center}
.intro-body>p{font-size:15px;line-height:2;color:var(--text-sub);margin-bottom:18px}
.intro-points{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:34px}
.intro-points li{background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:14px 12px;font-size:14px;font-weight:600;color:var(--dark);display:flex;align-items:center;justify-content:center;gap:8px}
.intro-points li::before{content:"✓";color:var(--primary);font-weight:800}

.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{padding:30px 26px}
.feature-icon{width:52px;height:52px;border-radius:14px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.feature-icon svg{width:26px;height:26px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.feature-card h3{font-size:18px;font-weight:700;color:var(--dark);margin-bottom:8px}
.feature-card p{font-size:14px;line-height:1.8;color:var(--text-sub)}

.compare-table{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.compare-row{display:grid;grid-template-columns:1fr 1.35fr 1.35fr}
.compare-row>div{padding:16px 20px;font-size:14px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:8px;color:var(--text-sub)}
.compare-row:last-child>div{border-bottom:none}
.compare-head>div{background:var(--primary-soft);color:var(--dark);font-weight:700}
.compare-head .c-brand{color:var(--primary)}
.c-label{color:var(--text);font-weight:600}
.c-brand{color:var(--dark);font-weight:600}
.tick{color:var(--primary);font-weight:800}
.cross{color:#B9B4D8;font-weight:700}

.section-dark{background:linear-gradient(135deg,var(--dark) 0%,var(--dark-2) 100%);color:#fff}
.section-dark .section-head h2{color:#fff}
.section-dark .section-head p{color:rgba(255,255,255,.65)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.stat{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:32px 16px;text-align:center;transition:transform .3s,background .3s}
.stat:hover{transform:translateY(-6px);background:rgba(255,255,255,.12)}
.stat-num{font-size:40px;font-weight:800;color:#fff;line-height:1.2}
.stat-num .suffix{font-size:18px;font-weight:700;color:#B7ABFF;margin-left:2px}
.stat p{margin-top:8px;font-size:14px;color:rgba(255,255,255,.68)}

.reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review-card{padding:24px 22px}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--primary),#9A8CFF);color:#fff;font-size:18px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.review-user{display:flex;flex-direction:column;line-height:1.4}
.uname{font-size:15px;font-weight:700;color:var(--dark)}
.stars{font-size:13px;letter-spacing:2px;color:#FFB300}
.review-text{font-size:14px;line-height:1.8;color:var(--text-sub)}

.update-card{max-width:760px;margin:0 auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:38px 36px;box-shadow:var(--shadow)}
.update-head{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;padding-bottom:20px;border-bottom:1px solid var(--border);margin-bottom:10px}
.update-ver{font-size:22px;font-weight:800;color:var(--primary);background:var(--primary-soft);padding:6px 16px;border-radius:10px}
.update-date{font-size:14px;color:var(--text-sub)}
.update-list li{position:relative;padding:11px 0 11px 26px;font-size:14px;color:var(--text);border-bottom:1px dashed var(--border)}
.update-list li:last-child{border-bottom:none}
.update-list li::before{content:"";position:absolute;left:4px;top:20px;width:7px;height:7px;border-radius:50%;background:var(--primary)}

.faq-list{max-width:760px;margin:0 auto}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:14px;margin-bottom:14px;overflow:hidden;transition:box-shadow .3s,border-color .3s}
.faq-item.active{border-color:var(--primary);box-shadow:var(--shadow)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 22px;background:none;border:none;font-size:15px;font-weight:600;color:var(--dark);text-align:left;cursor:pointer}
.faq-icon{position:relative;width:18px;height:18px;flex-shrink:0}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;width:14px;height:2px;background:var(--primary);border-radius:2px;transform:translate(-50%,-50%);transition:transform .3s}
.faq-icon::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq-item.active .faq-icon::after{transform:translate(-50%,-50%) rotate(0)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .35s ease}
.faq-item.active .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{padding:0 22px 20px;font-size:14px;line-height:1.85;color:var(--text-sub)}

.section-download{background:linear-gradient(180deg,var(--primary-soft) 0%,var(--bg) 100%)}
.download-title{font-size:36px;font-weight:800;color:var(--dark);text-align:center;letter-spacing:.5px}
.download-meta{margin:16px 0 30px;text-align:center;font-size:14px;color:var(--text-sub)}
.meta-dot{margin:0 6px;color:var(--text-sub)}
.download-btns{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.download-tip{margin-top:26px;text-align:center;font-size:14px;color:var(--text-sub)}

.footer{background:var(--dark);padding:30px 0;text-align:center;font-size:14px;color:rgba(255,255,255,.62)}
.footer-link{color:#fff;font-weight:700}
.footer-link:hover{color:#B7ABFF}

.to-top{position:fixed;right:26px;bottom:26px;z-index:99;width:44px;height:44px;border:none;border-radius:50%;background:var(--primary);color:#fff;font-size:18px;cursor:pointer;box-shadow:0 10px 24px rgba(108,92,231,.35);opacity:0;visibility:hidden;transform:translateY(14px);transition:opacity .3s,transform .3s,background .3s}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--primary-dark)}

@media(max-width:1100px){
  .menu{display:none}
}

@media(max-width:1024px){
  .works-grid{grid-template-columns:repeat(2,1fr)}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .reviews-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .hero-poster{flex-basis:300px}
}

@media(max-width:768px){
  .container{padding:0 20px}
  .logo-name{font-size:20px}
  .logo-mark{width:30px;height:30px;font-size:15px}
  .logo-badge{display:none}
  .nav-download{font-size:12px;padding:6px 13px}
  .hero{padding:calc(var(--nav-h) + 28px) 0 52px}
  .hero-inner{flex-direction:column;gap:30px;align-items:center}
  .hero-text{max-width:none}
  .hero-text h1{font-size:28px}
  .ver{font-size:13px;padding:3px 10px;margin-left:8px}
  .hero-desc{font-size:15px;margin:16px 0 26px}
  .hero-btns,.download-btns{flex-direction:column;width:100%;gap:12px}
  .hero-btns .btn,.download-btns .btn{width:100%}
  .hero-poster{flex-basis:auto;width:100%;max-width:320px}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .section-head h2{font-size:26px}
  .works-grid{grid-template-columns:1fr;gap:20px}
  .intro-points{grid-template-columns:repeat(2,1fr);margin-top:26px}
  .features-grid{grid-template-columns:1fr;gap:16px}
  .compare-row>div{padding:12px 8px;font-size:12px;gap:5px}
  .stats-grid{gap:14px}
  .stat{padding:24px 10px}
  .stat-num{font-size:30px}
  .stat-num .suffix{font-size:15px}
  .reviews-grid{grid-template-columns:1fr;gap:16px}
  .update-card{padding:26px 20px}
  .update-ver{font-size:19px}
  .download-title{font-size:28px}
  .download-meta{font-size:12px;white-space:nowrap}
  .to-top{right:16px;bottom:16px;width:40px;height:40px}
}