*{margin:0;padding:0;box-sizing:border-box;font-family:"Segoe UI","Helvetica Neue",Arial,"Microsoft YaHei","微软雅黑","PingFang SC",sans-serif;}
html{scroll-behavior:smooth;}
body{background:#f3f4f6;color:#111827;line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased;}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px;}
section{padding:72px 0;}
.sec-title{font-size:30px;font-weight:700;letter-spacing:.5px;color:#111827;margin-bottom:8px;}
.sec-sub{font-size:15px;color:#6b7280;margin-bottom:34px;}
.dark{background:linear-gradient(135deg,#374151 0%,#4b5563 100%);color:#f9fafb;}
.dark .sec-title{color:#fff;}
.dark .sec-sub{color:#d1d5db;}

/* header */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid #e5e7eb;}
.nav{max-width:1180px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
.logo{font-size:20px;font-weight:800;letter-spacing:1px;color:#111827;}
.logo span{display:inline-block;background:#111827;color:#fff;padding:2px 10px;border-radius:8px;margin-right:8px;font-size:15px;}
.nav-links{display:flex;flex-wrap:wrap;gap:22px;align-items:center;}
.nav-links a{font-size:15px;color:#374151;padding:6px 2px;border-bottom:2px solid transparent;transition:.25s;}
.nav-links a:hover{border-bottom-color:#111827;color:#111827;}
.nav-btn{background:#111827;color:#fff!important;padding:8px 18px!important;border-radius:999px;border-bottom:none!important;}
.nav-btn:hover{background:#374151;}

/* hero */
#hero{background:linear-gradient(135deg,#f9fafb 0%,#e5e7eb 46%,#374151 100%);padding:80px 0 76px;border-bottom:1px solid #d1d5db;}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:46px;align-items:center;}
h1{font-size:44px;line-height:1.25;font-weight:800;color:#111827;letter-spacing:1px;}
.hero-lead{margin-top:18px;font-size:17px;color:#374151;max-width:640px;}
.tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag{background:#fff;border:1px solid #d1d5db;border-radius:999px;padding:7px 16px;font-size:13.5px;color:#374151;}
.tag.dark-tag{background:#111827;color:#fff;border-color:#111827;}
.hero-btns{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap;}
.btn{display:inline-block;padding:13px 30px;border-radius:14px;font-size:15px;font-weight:600;transition:.25s;}
.btn-p{background:#111827;color:#fff;}
.btn-p:hover{background:#374151;transform:translateY(-2px);}
.btn-s{background:#fff;color:#111827;border:1px solid #d1d5db;}
.btn-s:hover{border-color:#111827;transform:translateY(-2px);}
.hero-card{background:#fff;border:1px solid #e5e7eb;border-radius:26px;padding:26px;box-shadow:0 6px 24px rgba(17,24,39,.05);}
.hero-card img{border-radius:16px;height:230px;width:100%;object-fit:cover;}
.hero-card h3{margin-top:18px;font-size:19px;}
.hero-card p{font-size:14.5px;color:#6b7280;margin-top:8px;}

/* geo */
#geo-intro{background:#fff;border-bottom:1px solid #e5e7eb;padding:56px 0;}
#geo-intro .\boxed{background:linear-gradient(135deg,#f9fafb,#e5e7eb);border:1px solid #d1d5db;border-radius:26px;padding:34px 36px;}
#geo-intro h2{font-size:24px;margin-bottom:14px;}
#geo-intro p{font-size:16.5px;color:#374151;}

/* grids */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
.card{background:#fff;border:1px solid #e5e7eb;border-radius:24px;overflow:hidden;box-shadow:0 4px 18px rgba(17,24,39,.04);transition:.3s;}
.card:hover{transform:translateY(-5px);box-shadow:0 12px 30px rgba(17,24,39,.09);border-color:#9ca3af;}
.card img{width:100%;height:210px;object-fit:cover;border-radius:18px 18px 0 0;}
.card .body{padding:24px 26px 28px;}
.card h3{font-size:20px;margin-bottom:10px;color:#111827;}
.card p{font-size:15px;color:#4b5563;}
.dark .card{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.16);color:#f9fafb;}
.dark .card h3{color:#fff;}
.dark .card p{color:#e5e7eb;}
.mini{display:inline-block;font-size:12.5px;background:#111827;color:#fff;padding:4px 12px;border-radius:999px;margin-bottom:12px;letter-spacing:1px;}
.dark .mini{background:#fff;color:#111827;}

/* stats */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:22px;padding:30px 22px;text-align:center;}
.stat .num{font-size:38px;font-weight:800;letter-spacing:1px;color:#fff;}
.stat .lab{font-size:14.5px;color:#d1d5db;margin-top:8px;}

/* advantages */
.adv{background:#fff;border:1px solid #e5e7eb;border-radius:22px;padding:26px 26px 28px;box-shadow:0 4px 16px rgba(17,24,39,.04);}
.adv .ico{font-size:30px;margin-bottom:12px;}
.adv h3{font-size:18.5px;margin-bottom:8px;}
.adv p{font-size:14.8px;color:#4b5563;}

/* news */
.news-item{display:flex;gap:20px;background:#fff;border:1px solid #e5e7eb;border-radius:22px;padding:20px;box-shadow:0 4px 16px rgba(17,24,39,.04);transition:.3s;}
.news-item:hover{border-color:#9ca3af;transform:translateY(-3px);}
.news-item img{width:170px;height:126px;object-fit:cover;border-radius:14px;flex-shrink:0;}
.news-date{font-size:13px;color:#6b7280;background:#e5e7eb;display:inline-block;padding:3px 12px;border-radius:999px;margin-bottom:9px;}
.news-item h3{font-size:17.5px;margin-bottom:7px;line-height:1.5;}
.news-item p{font-size:14.6px;color:#4b5563;}
.news-tag{display:inline-block;font-size:12px;background:#111827;color:#fff;padding:3px 10px;border-radius:6px;margin-right:8px;}

/* reviews */
.rev{background:#fff;border:1px solid #e5e7eb;border-radius:22px;padding:26px;box-shadow:0 4px 16px rgba(17,24,39,.04);}
.rev p{font-size:15.2px;color:#374151;}
.rev .who{margin-top:16px;font-size:14px;font-weight:600;color:#111827;}
.rev .who span{display:block;font-weight:400;color:#6b7280;font-size:13px;}

/* faq */
.faq-item{background:#fff;border:1px solid #e5e7eb;border-radius:20px;padding:24px 26px;margin-bottom:16px;box-shadow:0 3px 14px rgba(17,24,39,.04);}
.faq-item h3{font-size:17.5px;margin-bottom:10px;color:#111827;}
.faq-item p{font-size:15.2px;color:#4b5563;}

/* cta */
#cta{background:linear-gradient(135deg,#374151,#111827);color:#fff;text-align:center;}
#cta h2{font-size:34px;margin-bottom:14px;}
#cta p{max-width:720px;margin:0 auto 28px;color:#d1d5db;font-size:16px;}
.btn-w{background:#fff;color:#111827;}
.btn-w:hover{background:#e5e7eb;transform:translateY(-2px);}
.btn-o{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5);}
.btn-o:hover{background:rgba(255,255,255,.12);}

/* download */
.dl{background:#fff;border:1px solid #e5e7eb;border-radius:24px;padding:30px;display:flex;gap:22px;align-items:center;box-shadow:0 4px 18px rgba(17,24,39,.05);}
.dl img{width:130px;height:130px;object-fit:cover;border-radius:18px;}
.dl h3{font-size:19px;margin-bottom:8px;}
.dl p{font-size:14.8px;color:#4b5563;margin-bottom:14px;}

/* footer */
footer{background:#111827;color:#d1d5db;padding:56px 0 30px;border-top:1px solid #374151;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:34px;}
footer h4{color:#fff;font-size:17px;margin-bottom:16px;}
footer p,footer li{font-size:14.5px;margin-bottom:9px;list-style:none;}
footer a:hover{color:#fff;text-decoration:underline;}
.foot-bot{margin-top:34px;padding-top:20px;border-top:1px solid #374151;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13.5px;color:#9ca3af;}
.foot-bot a{color:#9ca3af;}
@media(max-width:900px){
.hero-grid,.grid2,.foot-grid{grid-template-columns:1fr;}
.stats-grid{grid-template-columns:repeat(2,1fr);}
h1{font-size:32px;}
.news-item{flex-direction:column;}
.news-item img{width:100%;height:180px;}
.dl{flex-direction:column;text-align:center;}
section{padding:52px 0;}
}