*{box-sizing:border-box}
:root{--blue:#2980FE;--blue-dark:#1768E8;--gradient:linear-gradient(90deg,#3558F2 0%,#7B4EF1 50%,#B84DDA 100%);--text:#1F2937;--muted:#667085;--line:#E6EAF2;--soft:#F5F7FB;--soft-blue:#F0F5FF;--white:#fff;--radius:28px;--shadow:0 18px 50px rgba(31,41,55,.08)}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;background:#F7F9FC;color:var(--text);line-height:1.75}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{width:min(1120px,calc(100% - 32px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;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;min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px}
.brand img{width:40px;height:40px;border-radius:14px;object-fit:cover}
.nav-toggle{display:none}
.nav-trigger{width:44px;height:44px;display:flex;flex-direction:column;justify-content:center;gap:6px;border:1px solid var(--line);border-radius:14px;padding:0 11px;background:#fff}
.nav-trigger span{height:2px;background:#263142;border-radius:10px}
.main-nav{position:absolute;left:14px;right:14px;top:72px;display:none;grid-template-columns:1fr;background:#fff;border:1px solid var(--line);border-radius:22px;padding:12px;box-shadow:var(--shadow)}
.main-nav a{padding:12px 14px;border-radius:14px;color:#344054;font-weight:650}
.main-nav a:hover{background:var(--soft-blue);color:var(--blue)}
.nav-toggle:checked~.main-nav{display:grid}
.section{padding:64px 0}
.section-soft{background:var(--soft)}
.section-title{margin:0 0 14px;font-size:clamp(28px,4vw,44px);line-height:1.18;letter-spacing:-.04em}
.section-lead{margin:0 0 28px;color:var(--muted);font-size:17px;max-width:760px}
.eyebrow,.badge{display:inline-flex;align-items:center;gap:8px;margin-bottom:12px;padding:7px 12px;border-radius:999px;background:#EDF4FF;color:var(--blue);font-weight:800;font-size:13px}
.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border-radius:999px;background:#2980FE;color:#fff!important;font-weight:800;box-shadow:0 14px 26px rgba(41,128,254,.24);transition:.2s ease}
.download-btn:hover{background:#1768E8;transform:translateY(-1px)}
.text-link{display:inline-flex;margin-top:14px;color:var(--blue);font-weight:800}
.network-manager-hero{padding:28px 0 70px}
.hero-panel{background:var(--gradient);border-radius:36px;padding:32px;overflow:hidden;position:relative;color:#fff;box-shadow:0 24px 70px rgba(74,82,210,.22)}
.hero-panel:before{content:"";position:absolute;inset:auto -70px -90px auto;width:260px;height:260px;border-radius:50%;background:rgba(255,255,255,.18);filter:blur(8px)}
.hero-grid{display:grid;gap:32px;position:relative;z-index:1}
.hero-copy h1{margin:0 0 18px;font-size:clamp(34px,8vw,62px);line-height:1.08;letter-spacing:-.06em}
.hero-copy p{margin:0 0 22px;color:rgba(255,255,255,.86);font-size:18px;max-width:620px}
.hero-tags,.visual-tags,.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.hero-tags span,.visual-tags span,.tag-row span{padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.24);font-weight:650;color:#fff}
.hero-visual{position:relative;min-height:320px;display:grid;place-items:center}
.hero-visual img{width:min(360px,88%);border-radius:32px;box-shadow:0 24px 70px rgba(20,24,72,.26)}
.floating-card{position:absolute;background:rgba(255,255,255,.94);color:#1F2937;border-radius:20px;padding:12px 14px;box-shadow:var(--shadow);font-weight:800}
.floating-card small{display:block;color:var(--muted);font-weight:650}
.float-one{left:0;top:34px}.float-two{right:0;bottom:50px}
.daily-scenes{display:grid;gap:18px}
.scene-card,.card,.bento-card,.risk-card,.faq-item,.step-card,.info-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:0 10px 28px rgba(31,41,55,.045)}
.scene-card span,.bento-card span{display:inline-flex;padding:5px 10px;border-radius:999px;background:#EDF4FF;color:var(--blue);font-size:12px;font-weight:800}
.scene-card h3,.bento-card h3,.card h3,.risk-card h3,.step-card h3{margin:12px 0 8px;font-size:20px;line-height:1.35}
.scene-card p,.bento-card p,.card p,.risk-card p,.step-card p,.info-card p{margin:0;color:var(--muted)}
.bento-feature-center{display:grid;gap:18px}
.bento-card{min-height:180px;display:flex;flex-direction:column;justify-content:space-between}
.bento-card.large{background:linear-gradient(180deg,#fff,#F5F9FF)}
.service-split{display:grid;gap:24px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:32px;padding:24px;box-shadow:var(--shadow)}
.service-split.alt{background:linear-gradient(180deg,#F7FAFF,#fff)}
.service-split img,.image-panel img{border-radius:28px;background:#EEF3FF}
.feature-list{display:grid;gap:12px;margin:20px 0 0;padding:0;list-style:none}
.feature-list li{display:flex;gap:10px;color:#485467}
.feature-list li:before{content:"";width:9px;height:9px;border-radius:50%;background:var(--blue);margin-top:10px;flex:0 0 auto}
.public-wifi-section .wifi-panel{background:#fff;border:1px solid var(--line);border-radius:32px;padding:24px;box-shadow:var(--shadow);display:grid;gap:22px}
.mini-grid,.privacy-grid,.device-grid,.diagnosis-grid,.account-grid{display:grid;gap:16px}
.mini-card{background:#F8FAFE;border:1px solid var(--line);border-radius:22px;padding:18px}
.mini-card h3{margin:0 0 8px}
.mini-card p{margin:0;color:var(--muted)}
.process-steps{display:grid;gap:16px}
.step-card strong{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:12px;background:var(--blue);color:#fff}
.risk-grid{display:grid;gap:16px}
.risk-card{border-left:4px solid var(--blue)}
.risk-card b{display:block;color:#263142;margin-top:8px}
.faq-list{display:grid;gap:14px}
.faq-item h3{margin:0 0 8px;font-size:18px}
.faq-item p{margin:0;color:var(--muted)}
.cta-section{padding:64px 0}
.cta-panel{background:var(--gradient);color:#fff;border-radius:36px;padding:34px;text-align:center;position:relative;overflow:hidden}
.cta-panel p{color:rgba(255,255,255,.84);max-width:680px;margin:0 auto 24px}
.cta-panel .download-btn{background:#2980FE}
.page-hero{padding:48px 0 24px}
.page-hero-card{background:#fff;border:1px solid var(--line);border-radius:32px;padding:28px;box-shadow:var(--shadow)}
.page-hero h1{margin:0 0 12px;font-size:clamp(32px,6vw,52px);letter-spacing:-.05em;line-height:1.12}
.page-hero p{margin:0;color:var(--muted);font-size:17px}
.content-layout{display:grid;gap:24px;align-items:start;padding:20px 0 64px}
.article-card{background:#fff;border:1px solid var(--line);border-radius:28px;padding:26px;box-shadow:0 10px 28px rgba(31,41,55,.045)}
.article-card h2{margin:0 0 12px;font-size:26px}
.article-card p{color:#4B5563}
.side-panel{background:#F7FAFF;border:1px solid var(--line);border-radius:28px;padding:22px;position:sticky;top:92px}
.side-panel h2{margin:0 0 10px;font-size:22px}
.side-panel ul{padding-left:20px;color:#536071}
.check-list{display:grid;gap:12px;margin:20px 0}
.check-list div{padding:14px 16px;border:1px solid var(--line);border-radius:18px;background:#fff}
.guide-grid{display:grid;gap:16px;margin-top:20px}
.site-footer{background:#101828;color:#D0D5DD;padding:46px 0;margin-top:24px}
.footer-grid{display:grid;gap:26px}
.footer-brand{font-size:24px;font-weight:900;color:#fff;margin-bottom:10px}
.site-footer h3{color:#fff;margin:0 0 12px}
.site-footer a{display:block;color:#D0D5DD;margin:8px 0}
.site-footer p{margin:0;color:#AAB3C2}
@media (min-width:700px){
    .daily-scenes{grid-template-columns:repeat(2,1fr)}
    .mini-grid,.privacy-grid,.device-grid,.diagnosis-grid,.account-grid,.risk-grid,.guide-grid{grid-template-columns:repeat(2,1fr)}
    .process-steps{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:1.4fr 1fr 1fr}
}
@media (min-width:980px){
    .nav-trigger{display:none}
    .main-nav{position:static;display:flex!important;align-items:center;gap:2px;background:transparent;border:0;box-shadow:none;padding:0}
    .main-nav a{padding:10px 12px;font-size:14px}
    .hero-panel{padding:52px}
    .hero-grid{grid-template-columns:1.05fr .95fr;align-items:center}
    .daily-scenes{grid-template-columns:repeat(3,1fr)}
    .bento-feature-center{grid-template-columns:repeat(4,1fr);grid-auto-rows:minmax(170px,auto)}
    .bento-card.large{grid-column:span 2;grid-row:span 2}
    .bento-card.wide{grid-column:span 2}
    .service-split{grid-template-columns:1fr 1fr;padding:34px}
    .service-split.reverse .image-panel{order:-1}
    .public-wifi-section .wifi-panel{grid-template-columns:1.1fr .9fr;align-items:center;padding:34px}
    .privacy-grid{grid-template-columns:repeat(3,1fr)}
    .device-grid,.diagnosis-grid,.account-grid{grid-template-columns:repeat(3,1fr)}
    .process-steps{grid-template-columns:repeat(3,1fr)}
    .risk-grid{grid-template-columns:repeat(4,1fr)}
    .content-layout{grid-template-columns:minmax(0,1fr) 320px}
    .guide-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:420px){
    .container{width:min(100% - 24px,1120px)}
    .hero-panel,.cta-panel{border-radius:28px;padding:26px 20px}
    .scene-card,.card,.bento-card,.risk-card,.faq-item,.step-card,.info-card,.article-card,.page-hero-card{border-radius:20px;padding:20px}
    .floating-card{position:static;margin-top:12px}
    .hero-visual{min-height:auto}
    .download-btn{width:100%}
}