:root{
    --brand-gradient: linear-gradient(90deg, #3558F2 0%, #7B4EF1 50%, #B84DDA 100%);
    --blue:#2980FE;
    --blue-dark:#1768E8;
    --text:#202635;
    --muted:#667085;
    --light:#F5F7FB;
    --line:#E6EAF2;
    --card:#FFFFFF;
    --shadow:0 18px 48px rgba(33, 54, 110, .10);
    --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:#fff;
    line-height:1.75;
    font-size:16px;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block;height:auto}
.site-header{
    position:sticky;
    top:0;
    z-index:50;
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(16px);
    border-bottom:1px solid rgba(230,234,242,.85);
}
.header-inner,.container,.footer-inner{
    width:min(1160px, calc(100% - 32px));
    margin:0 auto;
}
.header-inner{
    min-height:68px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:#172033;letter-spacing:.02em}
.logo img{width:38px;height:38px;border-radius:12px;object-fit:cover;box-shadow:0 8px 24px rgba(41,128,254,.18)}
.site-nav{display:none;align-items:center;gap:4px;flex-wrap:wrap;justify-content:flex-end}
.site-nav a{padding:10px 12px;border-radius:999px;color:#394254;font-size:14px;font-weight:600}
.site-nav a:hover,.site-nav a.active{background:#EDF4FF;color:var(--blue)}
.nav-toggle{border:1px solid var(--line);background:#fff;color:#1F2937;border-radius:14px;padding:9px 14px;font-weight:700}
.site-nav.open{display:flex;position:absolute;left:16px;right:16px;top:72px;background:#fff;padding:14px;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
.site-nav.open a{display:block}
main{overflow:hidden}
.section{padding:52px 0}
.section.alt{background:var(--light)}
.section-heading{margin:0 0 24px;display:grid;gap:8px}
.eyebrow,.badge{display:inline-flex;align-items:center;width:max-content;padding:6px 12px;border-radius:999px;background:#EAF3FF;color:var(--blue);font-size:13px;font-weight:800}
h1,h2,h3{line-height:1.18;margin:0;color:#172033}
h1{font-size:clamp(34px,7vw,66px);letter-spacing:-.05em}
h2{font-size:clamp(26px,4.8vw,42px);letter-spacing:-.035em}
h3{font-size:20px}
p{margin:0;color:var(--muted)}
.text-link{color:var(--blue);font-weight:800;display:inline-flex;margin-top:12px}
.text-link:hover{color:var(--blue-dark)}
.download-btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    min-height:48px;
    padding:13px 24px;
    border-radius:999px;
    color:#fff;
    background:var(--blue);
    font-weight:800;
    box-shadow:0 14px 30px rgba(41,128,254,.26);
    transition:transform .2s ease, background .2s ease, box-shadow .2s ease;
}
.download-btn:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 18px 34px rgba(23,104,232,.28)}
.network-manager-hero{padding:34px 0 64px;background:linear-gradient(180deg,#FFFFFF 0%,#F5F8FF 100%)}
.hero-shell{
    width:min(1188px,calc(100% - 24px));
    margin:0 auto;
    min-height:620px;
    display:grid;
    grid-template-columns:1fr;
    gap:28px;
    padding:28px;
    border-radius:36px;
    background:var(--brand-gradient);
    color:#fff;
    position:relative;
    overflow:hidden;
}
.hero-shell:before,.hero-shell:after{content:"";position:absolute;border-radius:999px;background:rgba(255,255,255,.18);filter:blur(2px)}
.hero-shell:before{width:320px;height:320px;right:-110px;top:-130px}.hero-shell:after{width:260px;height:260px;left:-130px;bottom:-120px}
.hero-content,.hero-visual{position:relative;z-index:1}
.hero-content{display:flex;flex-direction:column;justify-content:center;gap:20px;max-width:640px}
.hero-content h1,.hero-content p{color:#fff}.hero-content p{font-size:18px;color:rgba(255,255,255,.88)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}.hero-tags span{border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.13);padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700;color:#fff}
.hero-visual{display:grid;place-items:center;min-height:360px}
.phone-stage{position:relative;width:min(430px,92%);margin:auto}
.phone-stage img{border-radius:34px;box-shadow:0 30px 80px rgba(19,28,68,.30);background:#fff;padding:10px}
.float-card{position:absolute;background:rgba(255,255,255,.95);color:#172033;border-radius:18px;padding:10px 13px;box-shadow:0 12px 34px rgba(18,35,80,.20);font-weight:800;font-size:13px;white-space:nowrap}
.float-card small{display:block;color:var(--muted);font-weight:600;font-size:11px}.float-card.one{left:-12px;top:12%}.float-card.two{right:-6px;top:28%}.float-card.three{left:4px;bottom:18%}.float-card.four{right:2px;bottom:6%}
.daily-scenes{display:grid;grid-template-columns:1fr;gap:16px}.scene-card,.feature-card,.info-card,.risk-card,.faq-item,.article-card,.step-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 12px 30px rgba(24,43,88,.06)
}
.scene-card{padding:22px;display:grid;gap:10px}.scene-card .tag{color:var(--blue);font-weight:900;font-size:13px}
.bento-feature-center{display:grid;grid-template-columns:1fr;gap:16px}.feature-card{padding:24px;min-height:190px;display:flex;flex-direction:column;justify-content:space-between;gap:18px;position:relative;overflow:hidden}
.feature-card:before{content:"";position:absolute;inset:0 0 auto;height:4px;background:var(--brand-gradient);opacity:.85}.feature-card.large{min-height:260px}.feature-card .feature-label{font-size:13px;color:var(--blue);font-weight:900}
.split-section{display:grid;grid-template-columns:1fr;gap:24px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:34px;padding:22px;box-shadow:var(--shadow)}
.split-copy{display:grid;gap:16px}.point-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}.point-list li{display:flex;gap:10px;color:#475467}.point-list li:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--blue);margin-top:10px;flex:0 0 8px}.image-panel{background:linear-gradient(180deg,#F4F8FF,#FFFFFF);border-radius:28px;padding:14px;border:1px solid #E9EFFB}.image-panel img{border-radius:22px;margin:auto}
.smart-route-section .split-section{background:#F8FAFF}.public-wifi-section .wifi-panel{background:#fff;border:1px solid var(--line);border-radius:34px;padding:24px;box-shadow:var(--shadow);display:grid;gap:22px}.wifi-grid,.privacy-grid,.device-grid,.diagnosis-grid,.account-grid,.risk-grid,.faq-grid{display:grid;grid-template-columns:1fr;gap:16px}.info-card{padding:22px}.info-card h3{margin-bottom:8px}.privacy-guard-section .privacy-wrap{background:linear-gradient(135deg,#F7FAFF 0%,#FFFFFF 100%);border:1px solid var(--line);border-radius:34px;padding:24px}.device-board{display:grid;gap:16px}.device-card{border:1px solid var(--line);border-radius:24px;padding:18px;background:#fff}.diagnosis-grid .info-card{border-left:4px solid var(--blue)}.check-list{display:grid;gap:12px;margin:0;padding:0;list-style:none}.check-list li{padding:14px 16px;background:#F7FAFF;border:1px solid #E5EEFF;border-radius:18px;color:#475467}.process-steps{display:grid;grid-template-columns:1fr;gap:16px}.step-card{padding:22px}.step-no{width:36px;height:36px;border-radius:12px;background:var(--brand-gradient);color:#fff;font-weight:900;display:grid;place-items:center;margin-bottom:14px}.risk-card{padding:20px;border-top:4px solid var(--blue)}.risk-card strong{display:block;color:#172033;margin-bottom:6px}.faq-item{padding:20px}.faq-item h3{font-size:18px;margin-bottom:8px}.cta-section{padding:60px 0}.cta-card{width:min(1040px,calc(100% - 32px));margin:0 auto;text-align:center;padding:42px 24px;border-radius:36px;background:var(--brand-gradient);color:#fff;position:relative;overflow:hidden}.cta-card h2,.cta-card p{color:#fff}.cta-card p{max-width:680px;margin:12px auto 24px;color:rgba(255,255,255,.86)}
.page-hero{padding:52px 0 36px;background:linear-gradient(180deg,#F5F8FF 0%,#FFFFFF 100%)}.page-hero-inner{width:min(980px,calc(100% - 32px));margin:0 auto;display:grid;gap:14px}.page-hero h1{font-size:clamp(32px,6vw,54px)}.page-hero p{font-size:18px}.article-shell{width:min(1080px,calc(100% - 32px));margin:0 auto 56px;display:grid;grid-template-columns:1fr;gap:20px}.article-main{display:grid;gap:18px}.article-card{padding:24px}.article-card h2{font-size:28px;margin-bottom:10px}.article-grid{display:grid;gap:16px}.note-box{padding:18px;border-radius:22px;background:#F5F8FF;border:1px solid #E5EEFF;color:#475467}.side-panel{display:grid;gap:16px;align-self:start}.side-panel .article-card{padding:20px}.steps-list{counter-reset:item;display:grid;gap:14px;margin:0;padding:0;list-style:none}.steps-list li{counter-increment:item;position:relative;padding:16px 16px 16px 56px;border:1px solid var(--line);border-radius:20px;background:#fff}.steps-list li:before{content:counter(item);position:absolute;left:16px;top:18px;width:28px;height:28px;border-radius:10px;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:900}.download-page .single-download{text-align:center;margin-top:8px}.download-page .single-download .download-btn{margin-top:10px}.site-footer{background:#111827;color:#fff;padding:46px 0 0}.site-footer p,.site-footer a{color:#BFC7D5}.footer-inner{display:grid;gap:28px}.footer-links{display:grid;grid-template-columns:1fr;gap:22px}.footer-links h3{color:#fff;font-size:16px;margin-bottom:10px}.footer-links a{display:block;margin:8px 0;font-size:14px}.footer-bottom{text-align:center;padding:18px;margin-top:34px;border-top:1px solid rgba(255,255,255,.10);color:#9CA3AF;font-size:14px}.footer-logo img{box-shadow:none}
@media (min-width: 680px){
    .daily-scenes{grid-template-columns:repeat(2,1fr)}
    .bento-feature-center{grid-template-columns:repeat(2,1fr)}
    .wifi-grid,.privacy-grid,.device-grid,.diagnosis-grid,.account-grid,.risk-grid,.faq-grid,.article-grid{grid-template-columns:repeat(2,1fr)}
    .process-steps{grid-template-columns:repeat(2,1fr)}
    .footer-links{grid-template-columns:repeat(3,1fr)}
}
@media (min-width: 960px){
    .nav-toggle{display:none}.site-nav{display:flex}.site-nav.open{position:static;display:flex;flex-direction:row;background:transparent;border:0;box-shadow:none;padding:0}
    .hero-shell{grid-template-columns:1.02fr .98fr;padding:56px;min-height:650px}.hero-content{padding-left:8px}.hero-visual{min-height:auto}
    .daily-scenes{grid-template-columns:repeat(3,1fr)}
    .bento-feature-center{grid-template-columns:repeat(4,1fr);grid-auto-rows:minmax(190px,auto)}.feature-card.large{grid-column:span 2;grid-row:span 2}.feature-card.wide{grid-column:span 2}.feature-card.tall{grid-row:span 2}
    .split-section{grid-template-columns:1fr 1fr;padding:34px}.split-section.reverse .split-copy{order:2}.split-section.reverse .image-panel{order:1}
    .public-wifi-section .wifi-panel{grid-template-columns:1.2fr .8fr;align-items:center;padding:34px}.public-wifi-section .wifi-grid{grid-template-columns:repeat(3,1fr);grid-column:1 / -1}
    .privacy-grid,.device-grid,.diagnosis-grid,.account-grid{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)}
    .article-shell{grid-template-columns:minmax(0,1fr) 300px}.article-main .article-card{padding:30px}.article-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width: 420px){
    .header-inner,.container,.footer-inner,.article-shell,.page-hero-inner{width:min(100% - 24px, 1160px)}
    .hero-shell{width:calc(100% - 16px);padding:22px;border-radius:30px}.download-btn{width:100%;padding-left:18px;padding-right:18px}.float-card{font-size:11px}.float-card.two{right:-12px}.section{padding:40px 0}.cta-card{width:calc(100% - 24px);padding:34px 18px}
}