:root{
    --blue:#2980FE;
    --blue-dark:#1768E8;
    --gradient:linear-gradient(90deg,#3558F2 0%,#7B4EF1 50%,#B84DDA 100%);
    --text:#202636;
    --muted:#687083;
    --light:#f5f7fb;
    --line:#e6eaf2;
    --card:#ffffff;
    --soft:#eef4ff;
    --shadow:0 18px 50px rgba(32,38,54,.08);
    --radius:28px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
    margin:0;
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;
    color:var(--text);
    background:#f7f9fc;
    line-height:1.75;
    overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1120px,calc(100% - 32px));margin:0 auto}
.section{padding:56px 0}
.section-title{font-size:clamp(28px,5vw,44px);line-height:1.18;margin:0 0 16px;letter-spacing:-.03em}
.section-lead{color:var(--muted);margin:0 0 28px;font-size:16px}
.eyebrow,.badge{
    display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;
    color:#155bc8;background:#edf4ff;font-weight:700;font-size:13px;margin-bottom:16px
}
.site-header{
    position:sticky;top:0;z-index:40;background:rgba(255,255,255,.9);backdrop-filter:blur(16px);
    border-bottom:1px solid rgba(230,234,242,.9)
}
.header-inner{width:min(1180px,calc(100% - 28px));margin:0 auto;display:flex;align-items:center;justify-content:space-between;min-height:72px;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-weight:900;color:#182033;font-size:19px;white-space:nowrap}
.logo img{width:42px;height:42px;border-radius:14px;object-fit:cover;box-shadow:0 8px 20px rgba(41,128,254,.18)}
.nav-toggle{border:1px solid var(--line);background:#fff;border-radius:14px;padding:8px 12px;font-size:22px;color:var(--text)}
.site-nav{display:none;position:absolute;left:14px;right:14px;top:72px;background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:12px}
.site-nav.open{display:grid;gap:6px}
.site-nav a{padding:10px 12px;border-radius:14px;color:#465066;font-weight:700;font-size:14px}
.site-nav a:hover,.site-nav a.active{background:#eef4ff;color:#165fd6}
.download-btn{
    display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:13px 24px;border-radius:999px;
    background:var(--blue);color:#fff!important;font-weight:800;box-shadow:0 14px 32px rgba(41,128,254,.24);transition:.2s ease
}
.download-btn:hover{background:var(--blue-dark);transform:translateY(-1px)}
.network-manager-hero{padding:28px 0 40px}
.hero-card{
    background:var(--gradient);border-radius:34px;color:#fff;overflow:hidden;position:relative;box-shadow:0 28px 80px rgba(74,80,220,.24)
}
.hero-card:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 78% 18%,rgba(255,255,255,.28),transparent 28%),radial-gradient(circle at 10% 80%,rgba(255,255,255,.18),transparent 26%)}
.hero-grid{position:relative;display:grid;gap:32px;padding:34px 24px;align-items:center}
.hero-copy h1{font-size:clamp(36px,8vw,64px);line-height:1.08;margin:0 0 18px;letter-spacing:-.05em}
.hero-copy p{font-size:17px;color:rgba(255,255,255,.88);margin:0 0 24px}
.hero-tags,.floating-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-tags span,.floating-tags span{border:1px solid rgba(255,255,255,.42);background:rgba(255,255,255,.16);border-radius:999px;padding:8px 12px;font-size:13px;font-weight:700;backdrop-filter:blur(10px)}
.hero-visual{position:relative;min-height:300px;display:flex;align-items:center;justify-content:center}
.hero-visual img{max-height:430px;object-fit:contain;filter:drop-shadow(0 28px 38px rgba(18,22,42,.22))}
.status-card{position:absolute;left:8px;bottom:14px;background:rgba(255,255,255,.92);color:#1f2635;border-radius:22px;padding:14px 16px;box-shadow:0 18px 45px rgba(30,36,65,.18);max-width:220px}
.status-card strong{display:block;font-size:14px}.status-card small{color:#687083}
.floating-tags{position:absolute;right:6px;top:12px;max-width:230px;justify-content:flex-end}.floating-tags span{background:rgba(255,255,255,.9);color:#2456bd;border-color:rgba(255,255,255,.8)}
.daily-scenes{display:grid;gap:16px}
.scene-card,.bento-card,.info-card,.faq-item,.risk-card,.step-card,.tip-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 12px 34px rgba(36,47,75,.05)
}
.scene-card .tag,.bento-card .tag{display:inline-block;color:var(--blue);font-weight:800;font-size:13px;margin-bottom:8px}
.scene-card h3,.bento-card h3,.info-card h3,.risk-card h3,.step-card h3,.tip-card h3{margin:0 0 10px;font-size:21px;line-height:1.25}
.scene-card p,.bento-card p,.info-card p,.risk-card p,.step-card p,.tip-card p{margin:0 0 14px;color:var(--muted)}
.text-link{color:var(--blue);font-weight:800}
.bento-feature-center{display:grid;gap:16px}
.bento-card{position:relative;overflow:hidden;min-height:180px}
.bento-card.large{background:linear-gradient(145deg,#fff,#eef4ff)}
.bento-card:after{content:"";position:absolute;width:120px;height:120px;border-radius:50%;right:-40px;bottom:-45px;background:rgba(41,128,254,.08)}
.feature-split,.smart-route-section .route-panel,.multi-device-section .device-panel,.network-diagnosis-section .diagnosis-panel,.account-security-section .account-panel{
    display:grid;gap:24px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:34px;padding:24px;box-shadow:var(--shadow)
}
.feature-split.alt,.smart-route-section .route-panel{background:linear-gradient(145deg,#f8fbff,#fff)}
.feature-image{background:#f1f5fb;border-radius:28px;padding:16px;min-height:220px;display:flex;align-items:center;justify-content:center}
.feature-image img{max-height:360px;object-fit:contain}
.check-list{display:grid;gap:12px;margin:18px 0;padding:0;list-style:none}
.check-list li{display:flex;gap:10px;color:#465066}.check-list li:before{content:"✓";color:var(--blue);font-weight:900}
.public-wifi-section .wifi-panel,.privacy-guard-section .privacy-panel{
    background:#fff;border:1px solid var(--line);border-radius:34px;padding:24px;box-shadow:var(--shadow)
}
.three-cards,.privacy-cards,.risk-grid,.faq-grid,.guide-grid,.related-grid{display:grid;gap:16px}
.wifi-layout{display:grid;gap:22px;align-items:center}.wifi-layout .feature-image{background:#f7faff}
.process-steps{display:grid;gap:16px;counter-reset:step}
.step-card{position:relative;padding-left:72px;min-height:132px}
.step-card:before{counter-increment:step;content:counter(step);position:absolute;left:22px;top:24px;width:36px;height:36px;border-radius:14px;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:900}
.risk-card{border-left:5px solid var(--blue)}
.faq-item h3{margin:0 0 8px;font-size:18px}.faq-item p{margin:0;color:var(--muted)}
.cta-section{padding:58px 0 70px}.cta-box{background:var(--gradient);color:#fff;border-radius:34px;padding:34px 24px;text-align:center;position:relative;overflow:hidden}.cta-box p{color:rgba(255,255,255,.86);margin:0 auto 22px;max-width:680px}.cta-box h2{font-size:clamp(28px,5vw,44px);line-height:1.2;margin:0 0 14px}
.page-hero{padding:42px 0 24px}.page-hero-card{background:linear-gradient(135deg,#fff,#eef4ff);border:1px solid var(--line);border-radius:34px;padding:28px;box-shadow:var(--shadow)}
.page-hero h1{font-size:clamp(34px,7vw,56px);line-height:1.1;margin:0 0 16px;letter-spacing:-.04em}.page-hero p{color:var(--muted);font-size:17px;margin:0}
.content-layout{display:grid;gap:20px;padding:28px 0 64px}.article-card{background:#fff;border:1px solid var(--line);border-radius:34px;padding:24px;box-shadow:var(--shadow)}
.article-card h2{font-size:28px;line-height:1.25;margin:8px 0 14px}.article-card p{color:#4d566a;margin:0 0 16px}.article-card .download-btn{margin-top:12px}
.sidebar-card{background:#fff;border:1px solid var(--line);border-radius:30px;padding:22px;height:max-content;box-shadow:0 12px 34px rgba(36,47,75,.05)}
.sidebar-card h3{margin:0 0 14px}.sidebar-card a{display:block;padding:10px 0;border-bottom:1px solid var(--line);color:#3f4a60;font-weight:700}.sidebar-card a:last-child{border-bottom:0}
.notice-box{background:#f6f9ff;border:1px solid #dfeaff;border-radius:24px;padding:18px;margin:18px 0;color:#465066}.notice-box strong{color:#175dcc}
.download-steps{display:grid;gap:14px;margin:22px 0}.download-step{display:flex;gap:14px;align-items:flex-start;background:#f8fbff;border:1px solid var(--line);border-radius:22px;padding:16px}.download-step span{flex:0 0 34px;width:34px;height:34px;border-radius:12px;background:var(--blue);color:#fff;font-weight:900;display:grid;place-items:center}
.site-footer{background:#151b2b;color:#d9e1f2;padding:48px 0 0}.footer-grid{display:grid;gap:28px}.footer-brand{font-size:24px;font-weight:900;color:#fff;margin-bottom:10px}.site-footer p{color:#aeb8cc;margin:0}.site-footer h3{margin:0 0 12px;color:#fff}.site-footer a{display:block;color:#c2cce0;margin:8px 0}.footer-bottom{text-align:center;border-top:1px solid rgba(255,255,255,.1);margin-top:36px;padding:18px;color:#9aa7be;font-size:14px}
@media (min-width:680px){
    .daily-scenes,.three-cards,.privacy-cards,.guide-grid,.related-grid{grid-template-columns:repeat(2,1fr)}
    .risk-grid,.faq-grid{grid-template-columns:repeat(2,1fr)}
    .process-steps{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:920px){
    .nav-toggle{display:none}.site-nav{display:flex;position:static;border:0;box-shadow:none;background:transparent;padding:0;gap:4px;align-items:center}.site-nav.open{display:flex}
    .hero-grid{grid-template-columns:1fr .9fr;padding:58px 56px}.network-manager-hero{padding:38px 0 52px}
    .daily-scenes{grid-template-columns:repeat(3,1fr)}
    .bento-feature-center{grid-template-columns:repeat(6,1fr);grid-auto-rows:minmax(170px,auto)}
    .bento-card{grid-column:span 2}.bento-card.large{grid-column:span 3;min-height:240px}.bento-card.tall{grid-row:span 2}.bento-card.wide{grid-column:span 4}
    .feature-split,.smart-route-section .route-panel,.multi-device-section .device-panel,.network-diagnosis-section .diagnosis-panel,.account-security-section .account-panel{grid-template-columns:1fr 1fr;padding:36px}
    .wifi-layout{grid-template-columns:1.05fr .95fr}.three-cards,.privacy-cards{grid-template-columns:repeat(3,1fr)}
    .risk-grid{grid-template-columns:repeat(4,1fr)}.faq-grid{grid-template-columns:repeat(2,1fr)}.process-steps{grid-template-columns:repeat(3,1fr)}
    .content-layout{grid-template-columns:minmax(0,1fr) 310px;align-items:start}.article-card{padding:34px}.page-hero-card{padding:40px}
    .footer-grid{grid-template-columns:1.4fr .8fr .8fr}
}
@media (min-width:1160px){.container{width:min(1120px,calc(100% - 48px))}}