:root{
    --brand-gradient:linear-gradient(90deg,#3558F2 0%,#7B4EF1 50%,#B84DDA 100%);
    --blue:#2980FE;
    --blue-dark:#1768E8;
    --text:#1f2937;
    --muted:#64748b;
    --line:#e5eaf3;
    --soft:#f5f7fb;
    --soft-blue:#eef5ff;
    --white:#fff;
    --shadow:0 18px 50px 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:#f8fafc;line-height:1.72;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:blur(18px);border-bottom:1px solid rgba(226,232,240,.9)}
.header-inner{max-width:1180px;margin:auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:#111827;white-space:nowrap}.logo{width:38px;height:38px;border-radius:12px;object-fit:cover}.nav-toggle{display:none}.nav-toggle-label{display:flex;flex-direction:column;gap:5px;width:38px;height:38px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:12px;background:#fff}.nav-toggle-label span{width:18px;height:2px;background:#334155;border-radius:6px}.main-nav{display:none;position:absolute;left:16px;right:16px;top:68px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:12px;box-shadow:var(--shadow)}.main-nav a{display:block;padding:11px 12px;border-radius:12px;color:#475569;font-size:14px}.main-nav a:hover,.main-nav a.active{color:var(--blue);background:#eef5ff}.nav-toggle:checked~.main-nav{display:block}
.content-container,.section-inner{max-width:1180px;margin:0 auto;padding:0 20px}.section{padding:64px 0}.section-heading{max-width:760px;margin:0 auto 28px;text-align:center}.section-heading h2{font-size:30px;line-height:1.25;margin:0 0 12px}.section-heading p{color:var(--muted);margin:0}.eyebrow,.badge{display:inline-flex;align-items:center;gap:6px;background:#eef5ff;color:var(--blue);border:1px solid #d6e6ff;border-radius:999px;padding:6px 12px;font-size:13px;font-weight:700}.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:13px 24px;background:var(--blue);color:#fff;border-radius:999px;font-weight:800;box-shadow:0 12px 28px rgba(41,128,254,.22);transition:.2s ease}.download-btn:hover{background:var(--blue-dark);transform:translateY(-1px)}.text-link{color:var(--blue);font-weight:800}.text-link:hover{color:var(--blue-dark)}
.network-manager-hero{padding:28px 0 38px}.hero-shell{max-width:1180px;margin:0 auto;border-radius:34px;background:var(--brand-gradient);padding:28px 20px;overflow:hidden;position:relative;color:#fff}.hero-shell:before{content:"";position:absolute;inset:auto -90px -180px auto;width:380px;height:380px;background:rgba(255,255,255,.22);border-radius:50%;filter:blur(18px)}.hero-grid{position:relative;display:grid;grid-template-columns:1fr;gap:26px;align-items:center}.hero-copy h1{font-size:38px;line-height:1.12;margin:12px 0 16px;letter-spacing:-.04em}.hero-copy p{font-size:16px;color:rgba(255,255,255,.9);margin:0 0 22px}.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.hero-tags span,.floating-tags span{display:inline-flex;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.28);border-radius:999px;padding:7px 12px;color:#fff;font-size:13px}.hero-visual{position:relative;min-height:320px;display:grid;place-items:center}.hero-visual-card{background:rgba(255,255,255,.17);border:1px solid rgba(255,255,255,.26);border-radius:30px;padding:18px;width:min(420px,100%);box-shadow:0 30px 70px rgba(20,30,70,.25)}.hero-visual-card img{border-radius:24px;margin:auto;max-height:420px;object-fit:contain}.floating-card{position:absolute;left:4px;bottom:16px;background:#fff;color:#1f2937;border-radius:20px;padding:14px 16px;box-shadow:0 20px 45px rgba(15,23,42,.18);max-width:220px}.floating-card strong{display:block;font-size:15px}.floating-card span{font-size:12px;color:var(--muted)}.floating-tags{position:absolute;right:0;top:12px;display:grid;gap:8px}.floating-tags span{background:#fff;color:#334155;border:0;box-shadow:0 12px 30px rgba(15,23,42,.14)}
.daily-scenes{display:grid;grid-template-columns:1fr;gap:18px}.scene-card,.bento-card,.info-card,.risk-card,.faq-item,.step-card,.safety-panel,.page-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.scene-card{padding:24px}.scene-card .tag{display:inline-block;color:var(--blue);font-weight:800;font-size:13px;margin-bottom:10px}.scene-card h3,.bento-card h3,.info-card h3,.risk-card h3,.step-card h3{margin:0 0 8px;font-size:20px}.scene-card p,.bento-card p,.info-card p,.risk-card p,.step-card p{color:var(--muted);margin:0 0 14px}
.bento-feature-center{display:grid;grid-template-columns:1fr;gap:18px}.bento-card{padding:24px;min-height:178px}.bento-card.large{background:linear-gradient(135deg,#fff,#eef5ff)}.bento-card .label{color:var(--blue);font-size:13px;font-weight:800}.feature-split{display:grid;grid-template-columns:1fr;gap:26px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:34px;padding:24px;box-shadow:var(--shadow)}.feature-split.reverse{background:linear-gradient(135deg,#fff,#f3f7ff)}.feature-split .image-box{background:#f1f5f9;border-radius:28px;padding:18px;display:grid;place-items:center}.feature-split .image-box img{max-height:360px;object-fit:contain}.feature-copy h2{font-size:28px;line-height:1.28;margin:10px 0}.feature-copy p{color:var(--muted)}.check-list{display:grid;gap:10px;margin:18px 0;padding:0;list-style:none}.check-list li{background:#f8fafc;border:1px solid var(--line);border-radius:16px;padding:10px 12px;color:#475569}.smart-route-section{background:#eef5ff}.public-wifi-section .wifi-grid,.privacy-guard-section .privacy-grid,.account-security-section .account-grid{display:grid;grid-template-columns:1fr;gap:18px}.wifi-panel{background:#fff;border:1px solid var(--line);border-radius:34px;padding:24px;box-shadow:var(--shadow)}.wifi-panel img{border-radius:28px;background:#f1f5f9;padding:14px}.info-card{padding:22px}.multi-device-section{background:#f6f8fc}.network-diagnosis-section .diagnosis-grid{display:grid;grid-template-columns:1fr;gap:18px}.process-steps{display:grid;grid-template-columns:1fr;gap:16px}.step-card{padding:20px}.step-number{width:38px;height:38px;border-radius:14px;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:900;margin-bottom:12px}.risk-grid{display:grid;grid-template-columns:1fr;gap:16px}.risk-card{padding:20px;border-left:4px solid var(--blue)}.risk-card .advice{font-weight:800;color:#334155}.faq-list{display:grid;gap:14px}.faq-item{padding:18px 20px}.faq-item h3{margin:0 0 8px;font-size:18px}.faq-item p{margin:0;color:var(--muted)}.cta-section{padding:62px 20px}.cta-box{max-width:980px;margin:auto;text-align:center;color:#fff;background:var(--brand-gradient);border-radius:34px;padding:42px 22px;box-shadow:0 24px 70px rgba(53,88,242,.22)}.cta-box h2{font-size:30px;line-height:1.25;margin:0 0 12px}.cta-box p{max-width:690px;margin:0 auto 22px;color:rgba(255,255,255,.88)}
.page-hero{background:linear-gradient(180deg,#eef5ff,#f8fafc);padding:54px 0 28px}.page-hero-inner{max-width:900px;margin:0 auto;padding:0 20px;text-align:center}.page-hero h1{font-size:34px;line-height:1.22;margin:14px 0}.page-hero p{color:var(--muted);margin:0}.page-layout{display:grid;grid-template-columns:1fr;gap:22px;max-width:1100px;margin:0 auto;padding:36px 20px 64px}.page-main{display:grid;gap:18px}.page-card{padding:24px}.page-card h2{margin:0 0 10px;font-size:24px}.page-card p{color:var(--muted)}.page-aside{display:grid;gap:16px;align-content:start}.tip-box{background:#fff;border:1px solid var(--line);border-radius:24px;padding:20px;box-shadow:var(--shadow)}.tip-box h3{margin:0 0 8px}.tip-box ul{margin:10px 0 0;padding-left:20px;color:#64748b}.download-row{padding-top:6px}.download-page .download-row{text-align:center}.install-steps{counter-reset:item;display:grid;gap:14px}.install-steps li{list-style:none;background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px 18px;box-shadow:var(--shadow)}.install-steps li:before{counter-increment:item;content:counter(item);display:inline-grid;place-items:center;width:30px;height:30px;margin-right:8px;border-radius:11px;background:var(--blue);color:#fff;font-weight:900}.site-footer{background:#111827;color:#d1d5db}.footer-inner{max-width:1180px;margin:auto;padding:42px 20px;display:grid;grid-template-columns:1fr;gap:24px}.footer-brand{color:#fff;font-size:20px;font-weight:900}.footer-inner p{max-width:680px;color:#aab3c2}.footer-links{display:grid;gap:10px}.footer-links a:hover{color:#fff}.footer-bottom{text-align:center;border-top:1px solid rgba(255,255,255,.08);padding:18px;color:#9ca3af;font-size:13px}
@media (min-width:720px){.daily-scenes{grid-template-columns:repeat(3,1fr)}.bento-feature-center{grid-template-columns:repeat(2,1fr)}.bento-card.large{grid-column:span 2}.public-wifi-section .wifi-grid,.privacy-guard-section .privacy-grid,.account-security-section .account-grid,.network-diagnosis-section .diagnosis-grid{grid-template-columns:repeat(2,1fr)}.risk-grid{grid-template-columns:repeat(2,1fr)}.process-steps{grid-template-columns:repeat(2,1fr)}.footer-inner{grid-template-columns:1.5fr .8fr}.page-layout{grid-template-columns:minmax(0,1fr) 300px}.page-hero h1{font-size:42px}}
@media (min-width:980px){.nav-toggle-label{display:none}.main-nav{display:flex;position:static;box-shadow:none;border:0;background:transparent;padding:0;gap:4px;align-items:center}.main-nav a{padding:8px 10px}.hero-shell{padding:48px}.hero-grid{grid-template-columns:1.05fr .95fr}.hero-copy h1{font-size:56px}.feature-split{grid-template-columns:1fr 1fr;padding:38px}.feature-split.reverse .image-box{order:-1}.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}.public-wifi-section .wifi-grid{grid-template-columns:1.1fr .9fr}.privacy-guard-section .privacy-grid,.account-security-section .account-grid{grid-template-columns:repeat(3,1fr)}.risk-grid{grid-template-columns:repeat(4,1fr)}.section{padding:82px 0}.section-heading h2{font-size:38px}.cta-box h2{font-size:38px}}
@media (max-width:420px){.hero-copy h1{font-size:32px}.hero-shell{border-radius:0}.floating-tags{position:static;display:flex;flex-wrap:wrap;margin-top:10px}.floating-card{position:static;margin-top:12px}.section{padding:48px 0}.section-heading h2{font-size:26px}.page-hero h1{font-size:30px}.download-btn{width:100%}}