:root{--blue:#2E7DFF;--bg:#F5F8FF;--green:#34C759;--ink:#13233F;--mut:#5B6B84;--card:#fff;--r:16px}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:PingFang SC,HarmonyOS Sans,Noto Sans SC,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--ink);line-height:1.7;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.topbar{background:var(--ink);color:#fff;font-size:13px;text-align:center;padding:8px 12px}
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid #E6EDF7}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-weight:800;font-size:18px;display:flex;align-items:center;gap:8px}
.dot{width:12px;height:12px;border-radius:50%;background:var(--green);box-shadow:0 0 0 5px rgba(52,199,89,.18);display:inline-block}
.logo small{font-weight:600;color:var(--mut);font-size:12px}
.menu{display:none;gap:22px;font-size:15px;color:var(--mut)}
.menu a:hover{color:var(--blue)}
.btn{display:inline-block;border-radius:12px;padding:12px 22px;font-weight:700;font-size:15px;border:1px solid transparent;cursor:pointer}
.btn-p{background:var(--blue);color:#fff;box-shadow:0 8px 24px rgba(46,125,255,.32)}
.btn-s{background:#fff;border-color:#D6E4FF;color:var(--blue)}
.btn-g{background:var(--green);color:#fff}
.nav-cta{display:flex;gap:10px}
.nav-cta .btn{padding:9px 16px;font-size:14px}
section{padding:64px 0}
.eyebrow{display:inline-block;background:#E8F0FF;color:var(--blue);font-size:13px;font-weight:700;padding:6px 12px;border-radius:999px;margin-bottom:14px}
h1{font-size:34px;line-height:1.25;letter-spacing:.5px}
h2{font-size:26px;line-height:1.35;margin-bottom:10px}
.sub{color:var(--mut);font-size:16px;margin:10px 0 22px}
.hero{background:linear-gradient(180deg,#fff 0%,var(--bg) 100%);padding:48px 0 40px;overflow:hidden}
.hero-grid{display:grid;gap:28px}
.hero-visual{position:relative;background:#fff;border-radius:24px;padding:22px;box-shadow:0 12px 40px rgba(46,125,255,.14);border:1px solid #E6EDF7}
.map{height:280px;border-radius:16px;background:
 radial-gradient(circle at 30% 30%,rgba(46,125,255,.18),transparent 40%),
 radial-gradient(circle at 70% 60%,rgba(52,199,89,.2),transparent 35%),
 linear-gradient(#EDF3FF,#F9FBFF);position:relative;overflow:hidden;border:1px solid #DCE7FB}
.map::before{content:"";position:absolute;inset:0;background:
 linear-gradient(#D6E4FF 1px,transparent 1px),
 linear-gradient(90deg,#D6E4FF 1px,transparent 1px);background-size:36px 36px;opacity:.5}
.pin{position:absolute;left:52%;top:42%;transform:translate(-50%,-100%);text-align:center}
.pin i{display:block;width:44px;height:44px;margin:0 auto;background:var(--green);border-radius:50% 50% 50% 4px;transform:rotate(-45deg);border:4px solid #fff;box-shadow:0 8px 20px rgba(52,199,89,.5)}
.pin b{position:absolute;left:50%;top:50%;transform:translate(-50%,-58%);color:#fff;font-size:18px}
.pin span{display:inline-block;margin-top:8px;background:var(--ink);color:#fff;font-size:12px;padding:4px 10px;border-radius:999px;white-space:nowrap}
.float-card{position:absolute;background:#fff;border:1px solid #E6EDF7;border-radius:14px;padding:10px 14px;font-size:13px;font-weight:700;box-shadow:0 10px 26px rgba(19,35,63,.12)}
.fc1{right:12px;top:14px;color:var(--blue)}
.fc2{left:12px;bottom:14px;color:var(--green)}
.watch-row{display:flex;gap:12px;margin-top:16px}
.watch{flex:1;background:var(--bg);border:1px solid #E6EDF7;border-radius:16px;padding:14px;text-align:center;font-size:13px}
.watch strong{display:block;font-size:15px;margin-top:6px}
.trust{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px}
.trust div{background:#fff;border:1px solid #E6EDF7;border-radius:14px;padding:14px;text-align:center}
.trust b{font-size:20px;color:var(--blue);display:block}
.trust span{font-size:13px;color:var(--mut)}
.grid6{display:grid;gap:14px}
.card{background:var(--card);border:1px solid #E6EDF7;border-radius:var(--r);padding:22px}
.card h3{font-size:17px;margin:10px 0 6px}
.card p{font-size:14px;color:var(--mut)}
.icon{width:46px;height:46px;border-radius:14px;background:linear-gradient(135deg,#E8F0FF,#E6F9EC);display:flex;align-items:center;justify-content:center;font-size:22px}
.tech{background:#fff;border-top:1px solid #E6EDF7;border-bottom:1px solid #E6EDF7}
.tech-grid{display:grid;gap:20px}
.floor{background:var(--ink);color:#fff;border-radius:18px;padding:20px}
.floor div{display:flex;justify-content:space-between;background:rgba(255,255,255,.08);border-radius:10px;padding:10px 14px;margin-top:10px;font-size:14px}
.floor .on{background:rgba(52,199,89,.22);border:1px solid var(--green)}
.models{display:grid;gap:16px}
.model{position:relative;overflow:hidden}
.model.hot{border:2px solid var(--blue);box-shadow:0 12px 34px rgba(46,125,255,.18)}
.tag{position:absolute;top:14px;right:-1px;background:var(--blue);color:#fff;font-size:12px;font-weight:800;padding:6px 12px;border-radius:10px 0 0 10px}
.price{font-size:24px;font-weight:800;margin:10px 0}
.price small{font-size:13px;color:var(--mut);font-weight:400}
ul.tick{list-style:none;margin:12px 0;font-size:14px;color:#2A3A55}
ul.tick li{padding:6px 0 6px 26px;position:relative}
ul.tick li::before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:800}
.app-grid{display:grid;gap:16px}
.phone{background:#fff;border:1px solid #E6EDF7;border-radius:22px;padding:18px}
.screen{background:var(--bg);border-radius:14px;padding:14px;min-height:180px;border:1px solid #DCE7FB}
.quiz{background:var(--ink);color:#fff;border-radius:24px;padding:28px}
.quiz .opt{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0}
.quiz .opt span{background:rgba(255,255,255,.12);padding:10px 16px;border-radius:999px;font-size:14px;border:1px solid rgba(255,255,255,.2)}
.quiz .opt span.hot{background:var(--blue);border-color:var(--blue)}
.faq details{background:#fff;border:1px solid #E6EDF7;border-radius:12px;padding:16px 18px;margin-top:10px}
.faq summary{font-weight:700;cursor:pointer;font-size:15px}
.faq p{font-size:14px;color:var(--mut);margin-top:8px}
.buy{background:linear-gradient(135deg,#2E7DFF,#1E5BFF);color:#fff;border-radius:24px;padding:30px 24px;text-align:center}
.buy .btn{background:#fff;color:var(--blue);margin:6px}
.form{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap;justify-content:center}
.form input{padding:13px 16px;border-radius:12px;border:0;min-width:200px;font-size:15px}
footer{background:#0E1B33;color:#B9C6DD;padding:48px 0 90px;font-size:14px}
footer .cols{display:grid;gap:22px}
footer h4{color:#fff;font-size:15px;margin-bottom:10px}
footer a{display:block;padding:4px 0}
.bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:26px;padding-top:16px;font-size:12px;color:#7E8DA8}
.sticky{position:fixed;left:12px;right:12px;bottom:12px;z-index:60;display:flex;gap:10px}
.sticky .btn{flex:1;text-align:center;padding:14px}
@media(min-width:900px){
 h1{font-size:54px}.menu{display:flex}
 .hero-grid{grid-template-columns:1.05fr .95fr;align-items:center}
 .trust{grid-template-columns:repeat(4,1fr)}
 .grid6{grid-template-columns:repeat(3,1fr)}
 .tech-grid{grid-template-columns:1fr 1fr;align-items:center}
 .models{grid-template-columns:repeat(3,1fr)}
 .app-grid{grid-template-columns:1fr 1fr}
 footer .cols{grid-template-columns:1.2fr 1fr 1fr 1fr}
 .sticky{display:none}
 section{padding:84px 0}
}

/* ===== 多页站扩展：沿用上方 :root 变量，不改配色与既有设计 ===== */
.crumbs{max-width:1160px;margin:0 auto;padding:16px 20px 0;font-size:13px;color:var(--mut)}
.crumbs a{color:var(--blue)}
.crumbs a:hover{color:var(--ink)}
.page-head{padding:36px 0 4px}
.page-head .sub{max-width:840px}
.lede{background:var(--card);border:1px solid #E6EDF7;border-radius:var(--r);padding:24px;max-width:880px}
.lede p{font-size:15px;color:var(--mut)}
.lede .btn{margin-top:14px}
.blk{margin-top:44px}
.blk h2{font-size:24px}
.blk .sub{margin-bottom:16px}
.split{display:grid;gap:20px}
.tscroll{overflow-x:auto}
table.cmp{width:100%;border-collapse:collapse;background:var(--card);border:1px solid #E6EDF7;border-radius:var(--r);font-size:14px;margin:14px 0;overflow:hidden}
table.cmp th,table.cmp td{padding:12px 14px;text-align:left;vertical-align:top;border-bottom:1px solid #E6EDF7}
table.cmp th{background:#E8F0FF;font-weight:700;white-space:nowrap}
table.cmp tr:last-child td{border-bottom:0}
.panel{background:var(--card);border:1px solid #E6EDF7;border-radius:var(--r);padding:24px}
.panel h3{font-size:17px;margin-bottom:8px}
.panel p{font-size:14px;color:var(--mut)}
.qr{background:var(--card);border:1px dashed #D6E4FF;border-radius:var(--r);padding:44px 20px;text-align:center;color:var(--mut);font-size:14px}
.sitemap-list{display:grid;gap:14px;max-width:900px}
.btn{font-family:inherit}
@media(min-width:900px){
 .split{grid-template-columns:1fr 1fr;align-items:start}
 footer .cols{grid-template-columns:1.1fr 1fr 1fr 1fr 1.1fr}
 .page-head{padding:52px 0 6px}
}

.prose{max-width:880px}
.prose p{font-size:15px;color:var(--mut);margin:14px 0}
.prose ul,.prose ol{margin:14px 0;padding-left:22px;font-size:15px;color:#2A3A55}
.prose li{margin:8px 0;line-height:1.75}
.prose h3{font-size:17px;margin:22px 0 6px;color:var(--ink)}
.prose strong{color:var(--ink)}