:root{
    --blue:#2980FE;
    --blue-dark:#1768E8;
    --grad:linear-gradient(90deg,#3558F2 0%,#7B4EF1 50%,#B84DDA 100%);
    --text:#1f2937;
    --muted:#667085;
    --light:#f5f7fb;
    --line:#e5eaf3;
    --card:#ffffff;
    --shadow:0 18px 48px rgba(31,41,55,.08);
    --radius:28px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:#f7f9fd;line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{width:min(1120px,calc(100% - 32px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:blur(18px);border-bottom:1px solid rgba(229,234,243,.9)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px 0}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:#111827;letter-spacing:.2px}
.logo img{width:38px;height:38px;border-radius:12px;object-fit:cover}
.nav-toggle{border:1px solid var(--line);background:#fff;color:#344054;border-radius:999px;padding:8px 14px;font-weight:700}
.site-nav{display:none;position:absolute;left:16px;right:16px;top:68px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:10px;box-shadow:var(--shadow)}
.site-nav.open{display:grid;gap:4px}
.site-nav a{display:block;padding:10px 12px;border-radius:14px;color:#475467;font-size:15px;font-weight:650}
.site-nav a.active,.site-nav a:hover{background:#eef5ff;color:var(--blue)}
.section{padding:58px 0}
.section-soft{background:#eef3fb}
.eyebrow,.badge{display:inline-flex;align-items:center;gap:8px;border:1px solid #d7e6ff;background:#eef6ff;color:var(--blue);border-radius:999px;padding:6px 12px;font-weight:800;font-size:13px}
h1,h2,h3{line-height:1.25;margin:0 0 14px;color:#111827}
h1{font-size:clamp(34px,7vw,64px);letter-spacing:-1.5px}
h2{font-size:clamp(26px,4.8vw,42px);letter-spacing:-.8px}
h3{font-size:21px}
p{margin:0 0 14px;color:#5b6474}
.lead{font-size:18px;color:#eef4ff;max-width:650px}
.section-head{max-width:760px;margin-bottom:26px}
.section-head.center{text-align:center;margin-left:auto;margin-right:auto}
.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:13px 24px;border-radius:999px;background:#2980FE;color:#fff!important;font-weight:800;box-shadow:0 12px 28px rgba(41,128,254,.28);transition:.2s ease;white-space:nowrap}
.download-btn:hover{background:#1768E8;transform:translateY(-1px)}
.link{color:var(--blue);font-weight:800}
.network-manager-hero{padding:34px 0 54px;background:#fff}
.hero-shell{position:relative;overflow:hidden;border-radius:36px;background:var(--grad);padding:34px;box-shadow:0 26px 70px rgba(70,86,210,.22)}
.hero-shell:before{content:"";position:absolute;inset:-20% -15% auto auto;width:360px;height:360px;background:rgba(255,255,255,.18);border-radius:50%;filter:blur(12px)}
.hero-grid{position:relative;display:grid;gap:28px;align-items:center}
.hero-copy h1,.hero-copy p{color:#fff}
.hero-copy .sub{color:#eef4ff;font-size:18px;max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin:24px 0 18px}
.hero-tags,.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.hero-tags span,.floating-label,.tag-row span{background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.25);color:#fff;border-radius:999px;padding:7px 12px;font-weight:700;font-size:13px}
.hero-visual{position:relative;min-height:280px;display:grid;place-items:center}
.product-card{background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.28);border-radius:32px;padding:22px;backdrop-filter:blur(10px);width:min(390px,100%)}
.product-card img{border-radius:26px;margin:auto;max-height:360px;object-fit:contain}
.float-a,.float-b,.float-c,.float-d{position:absolute;background:#fff;color:#344054;border:1px solid #e6eaf2;box-shadow:0 16px 34px rgba(17,24,39,.12);border-radius:18px;padding:10px 12px;font-weight:800;font-size:13px}
.float-a{left:0;top:12%}.float-b{right:0;top:24%}.float-c{left:8%;bottom:12%}.float-d{right:8%;bottom:4%}
.daily-scenes,.card-grid,.risk-grid,.faq-grid{display:grid;grid-template-columns:1fr;gap:16px}
.scene-card,.bento-card,.info-card,.risk-card,.faq-item,.page-panel,.step-card,.aside-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:0 12px 34px rgba(16,24,40,.04)}
.scene-card small,.bento-card small,.info-card small,.risk-card small{display:inline-flex;color:var(--blue);font-weight:850;margin-bottom:8px}
.bento-feature-center{display:grid;grid-template-columns:1fr;gap:16px}
.bento-card.large{background:linear-gradient(180deg,#ffffff 0%,#f3f7ff 100%)}
.bento-card .boundary{font-size:14px;color:#667085;margin:10px 0}
.feature-split,.module-split{display:grid;gap:22px;align-items:center}
.feature-panel{background:#fff;border:1px solid var(--line);border-radius:36px;padding:26px;box-shadow:var(--shadow)}
.feature-panel img{border-radius:28px;max-height:410px;object-fit:contain;margin:auto}
.check-list{display:grid;gap:10px;margin:18px 0}
.check-list span{display:block;background:#f4f7fb;border:1px solid #e8edf5;border-radius:16px;padding:11px 14px;color:#344054;font-weight:650}
.smart-route-section .route-box{background:#eef5ff;border:1px solid #d9e8ff;border-radius:30px;padding:24px}
.public-wifi-section .wifi-panel{background:#fff;border:1px solid var(--line);border-radius:36px;padding:24px;box-shadow:var(--shadow)}
.wifi-cards,.privacy-cards,.device-cards,.diagnosis-steps,.account-list,.process-steps{display:grid;grid-template-columns:1fr;gap:14px}
.privacy-cards .info-card,.device-cards .info-card{min-height:160px}
.process-steps{counter-reset:step}
.step-card{position:relative;padding-left:68px}
.step-card:before{counter-increment:step;content:counter(step);position:absolute;left:22px;top:24px;width:32px;height:32px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:900}
.risk-card{border-left:4px solid var(--blue)}
.cta-section{padding:60px 0;background:#fff}
.cta-box{background:var(--grad);color:#fff;border-radius:36px;padding:36px;text-align:center;position:relative;overflow:hidden}
.cta-box:before{content:"";position:absolute;inset:auto -80px -120px auto;width:260px;height:260px;border-radius:50%;background:rgba(255,255,255,.18);filter:blur(8px)}
.cta-box h2,.cta-box p{color:#fff;position:relative}
.inner-hero{padding:48px 0 30px;background:linear-gradient(180deg,#f5f8ff 0%,#ffffff 100%)}
.inner-title{max-width:860px}
.inner-title h1{font-size:clamp(32px,5vw,52px);color:#111827}
.inner-title p{font-size:18px;color:#5b6474}
.page-layout{display:grid;gap:22px;align-items:start}
.content-stack{display:grid;gap:18px}
.page-panel h2{font-size:26px}
.tip-list{display:grid;gap:12px;margin-top:10px}
.tip-list li{background:#f6f8fc;border:1px solid #e8edf5;border-radius:16px;padding:12px 14px;color:#475467}
ul,ol{padding-left:22px;color:#5b6474}
.aside-card{position:sticky;top:96px}
.aside-card a{display:block;padding:10px 0;color:var(--blue);font-weight:800;border-bottom:1px solid #eef1f6}.aside-card a:last-child{border-bottom:0}
.download-page .download-focus{text-align:center;max-width:760px;margin:auto}
.download-page .download-focus .download-btn{margin:18px auto 10px}
.faq-item h3{font-size:18px}.faq-item p{margin-bottom:0}
.site-footer{background:#101828;color:#cbd5e1;padding:44px 0 18px;margin-top:30px}
.footer-grid{display:grid;gap:24px}.footer-brand{font-size:22px;font-weight:900;color:#fff;margin-bottom:10px}.site-footer p{color:#aeb9c9}.site-footer h3{font-size:16px;color:#fff}.site-footer a{display:block;color:#cbd5e1;padding:5px 0}.site-footer a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:24px;padding-top:18px;color:#94a3b8;font-size:14px}
@media (min-width:680px){
    .daily-scenes{grid-template-columns:repeat(2,1fr)}
    .card-grid,.risk-grid,.faq-grid{grid-template-columns:repeat(2,1fr)}
    .wifi-cards,.privacy-cards,.device-cards,.diagnosis-steps,.account-list{grid-template-columns:repeat(2,1fr)}
    .process-steps{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:980px){
    .nav-toggle{display:none}.site-nav{display:flex;position:static;background:transparent;border:0;box-shadow:none;padding:0;gap:4px}.site-nav a{padding:8px 10px;font-size:14px}
    .hero-shell{padding:54px}.hero-grid{grid-template-columns:1.05fr .95fr}.hero-visual{min-height:420px}
    .daily-scenes{grid-template-columns:repeat(3,1fr)}
    .bento-feature-center{grid-template-columns:repeat(6,1fr);grid-auto-flow:dense}.bento-card{min-height:190px}.bento-card.large{grid-column:span 3}.bento-card.medium{grid-column:span 2}.bento-card.small{grid-column:span 2}
    .feature-split,.module-split{grid-template-columns:1fr 1fr}.feature-split.reverse .feature-panel:first-child{order:2}
    .wifi-cards,.privacy-cards,.device-cards,.diagnosis-steps,.account-list{grid-template-columns:repeat(3,1fr)}
    .risk-grid{grid-template-columns:repeat(4,1fr)}
    .process-steps{grid-template-columns:repeat(3,1fr)}
    .page-layout{grid-template-columns:minmax(0,1fr) 300px}.footer-grid{grid-template-columns:1.5fr .8fr .8fr}.section{padding:76px 0}.cta-box{padding:54px}
}
@media (max-width:420px){.container{width:min(100% - 24px,1120px)}.hero-shell{padding:24px;border-radius:28px}.float-a,.float-b,.float-c,.float-d{position:static;margin:8px 4px 0;display:inline-flex}.hero-visual{display:block}.product-card{margin-bottom:8px}.download-btn{width:100%}.hero-actions .download-btn{width:100%}.site-nav{left:12px;right:12px}.scene-card,.bento-card,.info-card,.risk-card,.faq-item,.page-panel,.step-card,.aside-card{padding:20px;border-radius:22px}}