:root{--ink:#1c232d;--muted:#5f6b7a;--dim:#8a94a3;--line:rgba(221,231,244,.82);--blue:#3370ff;--purple:#7b61ff;--grad:linear-gradient(135deg,#3370ff 0%,#7b61ff 100%);--glass:rgba(255,255,255,.94);--shadow:0 28px 54px rgba(117,154,191,.12),0 6px 18px rgba(171,213,255,.10)}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{margin:0;background:#fff;color:var(--ink);font-family:"Noto Sans SC",-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;font-weight:400;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}button{font:inherit;cursor:pointer;border:0;background:none}
img{max-width:100%}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
/* header */
header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.8);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-bottom:1px solid var(--line)}
.nav{max-width:1240px;margin:0 auto;height:64px;display:flex;align-items:center;gap:28px;padding:0 24px}
.logo{display:flex;align-items:center;gap:9px;font-size:20px;font-weight:700;letter-spacing:-.02em}
.logo img{width:26px;height:26px}
.logo b{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav nav{display:flex;gap:26px;font-size:14px;color:var(--muted);position:absolute;left:50%;transform:translateX(-50%)}
.nav nav a{padding:6px 0;transition:color .25s}
.nav nav a:hover,.nav nav a[aria-current]{color:var(--ink)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:12px;font-size:14px;font-weight:500;padding:11px 22px;transition:transform .25s,box-shadow .25s,background .25s;line-height:1}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(51,112,255,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(51,112,255,.36)}
.btn-ghost{background:#fff;color:var(--ink);border:1px solid #d5e0f0}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue)}
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;background:#eef2f8;color:var(--ink);font-size:16px;place-items:center}
/* hero aurora */
.hero{position:relative;padding:150px 0 80px;text-align:center;overflow:hidden}
.hero:before,.hero:after{content:"";position:absolute;border-radius:50%;filter:blur(60px);pointer-events:none;animation:drift 14s ease-in-out infinite alternate}
.hero:before{width:560px;height:320px;left:8%;top:-60px;background:radial-gradient(closest-side,#d7e5ff,transparent)}
.hero:after{width:520px;height:300px;right:6%;top:20px;background:radial-gradient(closest-side,#e6dfff,transparent);animation-delay:-7s}
@keyframes drift{from{transform:translate(0,0) scale(1)}to{transform:translate(40px,26px) scale(1.08)}}
.kicker{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.18em;color:var(--blue);background:rgba(51,112,255,.08);border:1px solid rgba(51,112,255,.18);padding:7px 16px;border-radius:999px}
.hero h1{font-size:clamp(34px,4.6vw,60px);line-height:1.2;font-weight:700;letter-spacing:-.03em;margin:22px auto 18px;max-width:820px}
.hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{max-width:680px;margin:0 auto 34px;color:var(--muted);font-size:17px;line-height:1.9;font-weight:300}
.acts{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-stats{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:52px}
.hstat{background:var(--glass);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:18px 30px;min-width:170px}
.hstat b{display:block;font-size:26px;font-weight:700;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hstat span{font-size:12.5px;color:var(--muted)}
/* sections */
section{padding:88px 0}
.center{text-align:center}
.sec-k{font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--blue)}
h2.sec-h{font-size:clamp(26px,3vw,38px);font-weight:700;letter-spacing:-.02em;margin:12px 0 14px}
.sec-p{color:var(--muted);font-weight:300;max-width:640px;margin:0 auto;font-size:15px;line-height:1.8}
.glass{background:var(--glass);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:40px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:40px}
.mcard{padding:28px 24px;display:flex;flex-direction:column;gap:12px;transition:transform .3s,box-shadow .3s}
.mcard:hover{transform:translateY(-6px);box-shadow:0 34px 64px rgba(117,154,191,.18)}
.mcard .ic{width:46px;height:46px;border-radius:14px;background:rgba(51,112,255,.1);display:grid;place-items:center}
.mcard h3{margin:0;font-size:18px;font-weight:600}
.mcard p{margin:0;color:var(--muted);font-size:13.5px;font-weight:300;line-height:1.8}
.mcard .num{font-size:13px;color:var(--blue);font-weight:600}
/* geo panel */
.geo-row{display:grid;grid-template-columns:1fr 1.1fr;gap:40px;align-items:center;margin-top:44px}
.geo-copy h3{font-size:26px;font-weight:700;margin:0 0 14px;letter-spacing:-.02em}
.geo-copy p{color:var(--muted);font-weight:300;line-height:1.9;font-size:14.5px;margin:0 0 18px}
.geo-list{display:flex;flex-direction:column;gap:10px;margin-bottom:24px}
.geo-list span{display:flex;gap:10px;align-items:center;font-size:14px;color:#2a3340}
.geo-list i{width:20px;height:20px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-size:11px;font-style:normal;flex:0 0 20px}
.geo-panel{padding:26px}
.geo-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.geo-head b{font-size:15px}
.geo-head span{font-size:12px;color:var(--dim)}
.geo-item{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid #eef2f8;font-size:13.5px}
.geo-item:last-child{border-bottom:0}
.geo-item .d{color:var(--dim);font-size:12px;width:76px;flex:0 0 76px}
.geo-item .n{flex:1;color:#2a3340}
.geo-item .r{font-weight:600;color:var(--blue)}
.bar{height:6px;border-radius:99px;background:#e8eef8;overflow:hidden;width:110px;flex:0 0 110px}
.bar i{display:block;height:100%;border-radius:99px;background:var(--grad)}
/* plans */
.plan{padding:30px 26px;display:flex;flex-direction:column;gap:12px;position:relative;transition:transform .3s,box-shadow .3s}
.plan:hover{transform:translateY(-6px);box-shadow:0 34px 64px rgba(117,154,191,.18)}
.plan.hot{border:2px solid var(--blue)}
.plan .tagp{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;font-size:11px;padding:4px 14px;border-radius:999px;white-space:nowrap}
.plan h3{margin:0;font-size:19px;font-weight:700}
.plan .pp{font-size:15px;color:var(--muted);font-weight:300}
.plan ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}
.plan li{font-size:13px;color:var(--muted);font-weight:300;line-height:1.6;padding-left:16px;position:relative}
.plan li:before{content:"";position:absolute;left:0;top:6px;width:6px;height:6px;border-radius:50%;background:var(--grad)}
.plan .btn{margin-top:auto}
/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:40px}
.step{padding:26px;display:flex;flex-direction:column;gap:10px}
.step b{font-size:26px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.step h3{margin:0;font-size:16px;font-weight:600}
.step p{margin:0;font-size:13px;color:var(--muted);font-weight:300;line-height:1.7}
/* faq */
.faq{max-width:760px;margin:36px auto 0}
.faq details{background:var(--glass);border:1px solid var(--line);border-radius:16px;margin-bottom:12px;overflow:hidden}
.faq summary{cursor:pointer;padding:18px 22px;font-weight:500;font-size:15px;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";color:var(--blue);font-size:18px}
.faq details[open] summary:after{content:"–"}
.faq details p{padding:0 22px 18px;color:var(--muted);font-weight:300;line-height:1.8;margin:0;font-size:14px}
/* footer */
footer{background:#0b0e14;color:#9aa4b2;padding:70px 0 40px;margin-top:40px}
.ft-top{display:flex;gap:48px;flex-wrap:wrap}
.ft-brand{max-width:300px;display:flex;flex-direction:column;gap:16px}
.ft-logo{display:flex;align-items:center;gap:9px;font-size:20px;font-weight:700;color:#fff}
.ft-logo img{width:24px;height:24px}
.ft-brand p{font-size:13px;font-weight:300;line-height:1.9;margin:0}
.ft-col{display:flex;flex-direction:column;gap:14px;min-width:110px}
.ft-col h3{font-size:14px;font-weight:600;color:#fff;margin:0}
.ft-col a{font-size:13px;font-weight:300;transition:color .25s}
.ft-col a:hover{color:#fff}
.ft-qr{display:flex;gap:16px}
.ft-qr .q{display:flex;flex-direction:column;align-items:center;gap:8px}
.ft-qr img{width:92px;height:92px;background:#fff;border-radius:10px;padding:5px}
.ft-qr span{font-size:11px}
.ft-phone{color:#fff;font-size:14px;font-weight:600;margin:14px 0 0}
.ft-bottom{border-top:1px solid rgba(255,255,255,.08);margin-top:44px;padding-top:22px;display:flex;gap:20px;flex-wrap:wrap;font-size:12px;font-weight:300}
/* reveal */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
/* dialog */
dialog{border:0;border-radius:20px;padding:30px;max-width:400px;width:calc(100% - 40px);box-shadow:0 30px 80px rgba(20,30,60,.25)}
dialog::backdrop{background:rgba(15,20,35,.45);backdrop-filter:blur(4px)}
dialog h2{margin:0 0 6px;font-size:20px}
dialog .sub{font-size:13px;color:var(--muted);font-weight:300;margin:0 0 18px}
dialog .close{position:absolute;top:14px;right:16px;color:var(--dim);font-size:13px}
dialog img.qr{width:180px;height:180px;display:block;margin:6px auto;border:1px solid var(--line);border-radius:14px;padding:8px}
dialog .hint{text-align:center;font-size:12px;color:var(--dim);margin:10px 0 0;font-weight:300}
#toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);background:#1c232d;color:#fff;padding:10px 20px;border-radius:999px;font-size:13px;z-index:200}
/* responsive */
@media(max-width:960px){
 .nav nav{display:none;position:absolute;top:64px;left:16px;right:16px;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:10px;gap:2px;transform:none}
 header.nav-open nav{display:flex}
 .nav nav a{padding:12px 14px;border-radius:10px}
 .nav-toggle{display:grid;margin-left:8px}
 .grid4,.grid3,.steps{grid-template-columns:1fr}
 .geo-row{grid-template-columns:1fr}
 .hero{padding-top:120px}
 .nav{padding:0 16px}
 .nav-actions .btn-ghost{display:none}
}

/* plan tabs */
.ptabs{display:flex;justify-content:center;gap:10px;margin:34px 0 30px;flex-wrap:wrap}
.ptab{padding:12px 26px;border-radius:999px;border:1px solid #d5e0f0;background:#fff;font-size:15px;font-weight:500;color:#5f6b7a;transition:all .3s}
.ptab:hover{border-color:#3370ff;color:#3370ff;transform:translateY(-2px)}
.ptab.on{background:var(--grad);border-color:transparent;color:#fff;box-shadow:0 10px 24px rgba(51,112,255,.3)}
.ppane{display:none}.ppane.on{display:block;animation:panein .45s ease}
@keyframes panein{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
#plans .plan{min-height:470px}
/* micro interactions */
.nav nav a{position:relative}
.nav nav a:after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--grad);border-radius:2px;transition:width .3s}
.nav nav a:hover:after,.nav nav a[aria-current]:after{width:100%}
.hstat{transition:transform .3s,box-shadow .3s}
.hstat:hover{transform:translateY(-4px);box-shadow:0 34px 64px rgba(117,154,191,.18)}
.mcard .ic{transition:transform .3s}
.mcard:hover .ic{transform:rotate(-6deg) scale(1.08)}
.geo-item{transition:background .2s;border-radius:10px}
.geo-item:hover{background:#f4f8ff}
.btn,.fchip,.ptab,.pg{position:relative;overflow:hidden}
.ripple{position:absolute;border-radius:50%;background:rgba(255,255,255,.55);transform:scale(0);animation:rip .6s ease-out forwards;pointer-events:none}
.btn-ghost .ripple,.fchip .ripple,.pg .ripple{background:rgba(51,112,255,.22)}
@keyframes rip{to{transform:scale(1);opacity:0}}
.pf{flex:0 0 68px;font-weight:600;color:#1c232d;font-size:13px}

.mcard .thumb{border-radius:12px;overflow:hidden;margin:-4px 0 4px}.mcard .thumb img{display:block;width:100%;height:auto;aspect-ratio:600/260;object-fit:cover}.lw{letter-spacing:-.02em}
.hero .wrap{position:relative;z-index:1}@media(max-width:960px){.hero-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px}.hstat{min-width:0;padding:16px 18px}.hstat b{font-size:22px}}