/*
  WPS Office 未来极简蓝紫渐变 Glassmorphism 主题
  颜色：#191e2b 深蓝黑 | #6366f1 蓝紫 | #a5b4fc 淡蓝紫 | #f9fafb 极浅灰 | #fff 白
  玻璃拟态/大留白/圆形分布/横向分割/科技感SVG
*/
:root {
  --bg-main: #191e2b;
  --bg-glass: rgba(255,255,255,0.16);
  --bg-glass-strong: rgba(255,255,255,0.28);
  --accent: #6366f1;
  --accent-light: #a5b4fc;
  --accent2: #38bdf8;
  --accent3: #f59e42;
  --text-main: #f9fafb;
  --text-dark: #191e2b;
  --text-muted: #a5b4fc;
  --border: #2d334d;
  --radius: 20px;
  --radius-sm: 12px;
  --shadow: 0 8px 32px rgba(25,30,43,0.18);
  --maxw: 1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg-main);color:var(--text-main);font-family:'Segoe UI',Roboto,Arial,sans-serif;line-height:1.7;}
a{color:var(--accent);text-decoration:none;}
img{max-width:100%;display:block}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}

@keyframes spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}

/* Glassmorphism Card */
.glass{background:var(--bg-glass);backdrop-filter:blur(24px);box-shadow:var(--shadow);border-radius:var(--radius);border:1.5px solid var(--bg-glass-strong);}

/* Nav */
.nav{position:sticky;top:0;z-index:100;background:var(--bg-glass-strong);backdrop-filter:blur(18px);border-bottom:1px solid var(--border);}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:0 32px;height:74px;display:flex;align-items:center;justify-content:space-between;}
.nav-logo{display:flex;align-items:center;gap:14px;font-weight:800;font-size:22px;letter-spacing:-.4px;color:var(--accent);}
.nav-logo svg{width:36px;height:36px;}
.nav-menu{display:flex;align-items:center;gap:8px;}
.nav-link{padding:10px 26px;border-radius:100px;font-size:16px;font-weight:600;color:var(--text-muted);transition:.2s;}
.nav-link:hover{color:var(--accent);background:var(--bg-glass);}
.nav-link.active{background:var(--accent);color:#fff;box-shadow:0 4px 18px rgba(99,102,241,.23);}
.nav-dl{margin-left:18px;padding:10px 26px;border-radius:100px;background:var(--accent2);color:#fff;font-weight:700;font-size:15px;box-shadow:0 4px 16px rgba(56,189,248,.18);transition:.2s;}
.nav-dl:hover{background:var(--accent);}

/* Hero */
.hero{padding:96px 0 64px;background:linear-gradient(120deg,#6366f1 0%,#191e2b 80%);position:relative;overflow:hidden;}
.hero-content{display:flex;align-items:center;justify-content:space-between;gap:56px;max-width:var(--maxw);margin:0 auto;}
.hero-text{flex:1;min-width:320px;}
.hero-title{font-size:54px;font-weight:900;line-height:1.1;letter-spacing:-1.5px;margin-bottom:22px;color:#fff;}
.hero-title span{color:var(--accent2);}
.hero-desc{font-size:21px;color:var(--accent-light);margin-bottom:36px;max-width:500px;}
.hero-btns{display:flex;gap:18px;flex-wrap:wrap;}
.btn{display:inline-flex;align-items:center;gap:10px;padding:16px 38px;border-radius:100px;font-size:18px;font-weight:800;transition:.2s;}
.btn-main{background:var(--accent);color:#fff;box-shadow:0 8px 32px rgba(99,102,241,.18);}
.btn-main:hover{background:var(--accent2);}
.btn-glass{background:var(--bg-glass);color:var(--accent);border:1.5px solid var(--accent-light);}
.btn-glass:hover{background:var(--accent-light);color:var(--bg-main);}
.btn-lg{font-size:20px;padding:18px 48px;}
.btn-sm{font-size:14px;padding:10px 24px;}

/* Section */
.section{padding:96px 0;}
.section-title{font-size:38px;font-weight:900;margin-bottom:18px;letter-spacing:-1px;color:#fff;}
.section-desc{font-size:20px;color:var(--accent-light);margin-bottom:48px;}

/* Features - Circle Grid */
.circle-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:48px;max-width:var(--maxw);margin:0 auto 64px;}
.circle-feature{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:38px 18px;background:var(--bg-glass);border-radius:50%;box-shadow:var(--shadow);transition:.2s;}
.circle-feature:hover{background:var(--accent-light);color:var(--bg-main);}
.circle-feature-icon{width:58px;height:58px;margin-bottom:16px;}
.circle-feature-title{font-size:20px;font-weight:700;margin-bottom:8px;}
.circle-feature-desc{font-size:15px;color:var(--text-muted);}

/* Download Platforms */
.platforms{display:flex;gap:32px;justify-content:center;margin-bottom:64px;}
.platform-card{flex:1;min-width:180px;max-width:240px;background:var(--bg-glass);border-radius:var(--radius);padding:32px 18px;text-align:center;box-shadow:var(--shadow);}
.platform-card .platform-icon{width:38px;height:38px;margin-bottom:12px;}
.platform-card .platform-title{font-size:17px;font-weight:700;margin-bottom:8px;}
.platform-card .platform-desc{font-size:14px;color:var(--text-muted);margin-bottom:10px;}
.platform-card .btn{width:100%;}

/* Function Timeline */
.timeline{position:relative;max-width:var(--maxw);margin:0 auto;}
.timeline::before{content:"";position:absolute;left:50%;top:0;bottom:0;width:4px;background:var(--accent-light);border-radius:2px;transform:translateX(-50%);}
.timeline-item{display:flex;align-items:center;gap:40px;margin-bottom:64px;position:relative;}
.timeline-item:nth-child(even){flex-direction:row-reverse;}
.timeline-dot{width:28px;height:28px;border-radius:50%;background:var(--accent2);display:flex;align-items:center;justify-content:center;position:absolute;left:50%;transform:translateX(-50%);z-index:2;}
.timeline-content{background:var(--bg-glass);border-radius:var(--radius-sm);padding:32px;box-shadow:var(--shadow);flex:1;}
.timeline-title{font-size:22px;font-weight:800;margin-bottom:10px;}
.timeline-desc{font-size:15px;color:var(--text-muted);}
.timeline-img{width:120px;height:120px;border-radius:50%;background:var(--accent-light);display:flex;align-items:center;justify-content:center;overflow:hidden;}

/* User Reviews */
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;max-width:var(--maxw);margin:0 auto 64px;}
.review-card{background:var(--bg-glass);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);}
.review-header{display:flex;align-items:center;gap:14px;margin-bottom:10px;}
.review-avatar{width:44px;height:44px;border-radius:50%;background:var(--accent-light);color:var(--bg-main);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;}
.review-user{font-weight:700;}
.review-stars{display:flex;gap:2px;margin-bottom:6px;}
.review-stars svg{width:16px;height:16px;fill:var(--accent2);}
.review-content{font-size:15px;color:var(--text-muted);}

/* Data Stats */
.stats{display:flex;gap:32px;justify-content:center;margin-bottom:64px;}
.stat-card{background:var(--bg-glass);border-radius:var(--radius-sm);padding:32px 24px;text-align:center;box-shadow:var(--shadow);min-width:140px;}
.stat-num{font-size:30px;font-weight:900;color:var(--accent2);}
.stat-label{font-size:14px;color:var(--accent-light);}

/* Comparison Table */
.compare-table-wrap{overflow-x:auto;max-width:var(--maxw);margin:0 auto 64px;}
.compare-table{width:100%;min-width:700px;border-collapse:collapse;font-size:15px;}
.compare-table th{background:var(--bg-glass);padding:16px 20px;text-align:left;font-weight:800;color:var(--accent);border-bottom:2px solid var(--accent-light);}
.compare-table td{padding:16px 20px;border-bottom:1px solid var(--bg-glass-strong);}
.compare-table tr:hover td{background:var(--bg-glass-strong);}
.compare-table td:first-child{font-weight:700;color:var(--accent2);}
.compare-table .yes{color:var(--accent2);font-weight:800;}
.compare-table .no{color:#f59e42;font-weight:700;}
.compare-table .part{color:var(--accent-light);}

/* FAQ */
.faq{max-width:900px;margin:0 auto 64px;}
.faq-group{margin-bottom:32px;}
.faq-item{background:var(--bg-glass);border-radius:var(--radius-sm);margin-bottom:12px;box-shadow:var(--shadow);}
.faq-q{padding:22px 32px;cursor:pointer;font-size:18px;font-weight:800;color:var(--accent);display:flex;align-items:center;justify-content:space-between;}
.faq-q svg{width:22px;height:22px;fill:var(--accent2);transition:.3s;}
.faq-item.open .faq-q svg{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease,padding .35s ease;padding:0 32px;}
.faq-item.open .faq-a{max-height:400px;padding-bottom:22px;}
.faq-a p{font-size:15px;color:var(--text-muted);}

/* CTA Banner */
.cta{background:linear-gradient(120deg,#6366f1 0%,#38bdf8 100%);border-radius:var(--radius);padding:72px 48px;text-align:center;box-shadow:var(--shadow);margin:0 auto 64px;max-width:var(--maxw);}
.cta h2{font-size:36px;font-weight:900;color:#fff;margin-bottom:18px;}
.cta p{color:var(--accent-light);font-size:18px;margin-bottom:28px;}
.cta-btns{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;}

/* Footer */
.footer{background:var(--bg-glass-strong);color:var(--accent-light);padding:48px 0 28px;backdrop-filter:blur(18px);}
.footer-inner{max-width:var(--maxw);margin:0 auto;padding:0 32px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:900;font-size:18px;color:var(--accent2);margin-bottom:20px;}
.footer-brand svg{width:28px;height:28px;}
.footer-sec{font-size:15px;line-height:1.8;margin-bottom:10px;}
.footer-sec strong{color:#fff;}
.footer-note{font-size:13px;color:var(--accent-light);margin-top:20px;padding-top:20px;border-top:1px solid var(--bg-glass);}

/* Responsive */
@media (max-width: 1000px) {
  .hero-content{flex-direction:column;gap:36px;}
  .circle-grid{grid-template-columns:1fr 1fr;}
  .reviews{grid-template-columns:1fr 1fr;}
  .stats{flex-direction:column;gap:18px;}
}
@media (max-width: 700px) {
  .nav-inner{padding:0 12px;}
  .hero-title{font-size:32px;}
  .section-title{font-size:24px;}
  .circle-grid{grid-template-columns:1fr;gap:24px;}
  .platforms{flex-direction:column;gap:18px;}
  .reviews{grid-template-columns:1fr;}
  .stats{gap:10px;}
  .timeline-item{flex-direction:column!important;gap:18px;}
  .timeline-img{width:72px;height:72px;}
  .cta{padding:32px 12px;}
  .footer-inner{padding:0 12px;}
}