:root {
    --brand-gradient: linear-gradient(90deg, #3558F2 0%, #7B4EF1 50%, #B84DDA 100%);
    --blue: #2980FE;
    --blue-hover: #1768E8;
    --text: #182033;
    --muted: #667085;
    --light: #F5F7FB;
    --line: #E6EAF2;
    --panel: #FFFFFF;
    --soft-blue: #EEF5FF;
    --radius-xl: 32px;
    --radius-lg: 24px;
    --radius-md: 18px;
    --shadow: 0 18px 50px rgba(29, 45, 91, 0.08);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--text);
    background: #fff;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(100% - 32px, 1180px); margin: 0 auto; }
.section { padding: 64px 0; }
.section-soft { background: var(--light); }
.section-title { margin-bottom: 28px; }
.section-title .eyebrow, .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--blue);
    background: #EEF5FF;
    border: 1px solid #D8E7FF;
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 14px;
    font-weight: 700;
}
h1, h2, h3 { margin: 0 0 14px; line-height: 1.2; letter-spacing: -0.02em; }
h1 { font-size: clamp(34px, 7vw, 64px); }
h2 { font-size: clamp(28px, 4vw, 42px); }
h3 { font-size: 21px; }
p { margin: 0 0 16px; color: var(--muted); }
ul, ol { margin: 0; padding-left: 20px; color: var(--muted); }
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255,255,255,0.92);
    border-bottom: 1px solid rgba(230,234,242,0.9);
    backdrop-filter: blur(14px);
}
.nav-shell {
    width: min(100% - 28px, 1180px);
    min-height: 68px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}
.brand, .footer-brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; color: var(--text); }
.brand-logo { width: 36px; height: 36px; border-radius: 12px; object-fit: cover; }
.nav-toggle { display: none; }
.nav-toggle-btn { display: inline-flex; width: 42px; height: 42px; align-items: center; justify-content: center; flex-direction: column; gap: 5px; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.nav-toggle-btn span { width: 18px; height: 2px; background: var(--text); border-radius: 99px; }
.site-nav {
    position: absolute;
    left: 14px;
    right: 14px;
    top: 74px;
    display: none;
    flex-direction: column;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: #fff;
    box-shadow: var(--shadow);
}
.nav-toggle:checked ~ .site-nav { display: flex; }
.site-nav a { padding: 10px 12px; border-radius: 12px; color: #394258; font-weight: 650; font-size: 15px; }
.site-nav a:hover, .site-nav a.active { color: var(--blue); background: #F0F6FF; }
.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 12px 24px;
    border-radius: 999px;
    background: var(--blue);
    color: #fff;
    font-weight: 800;
    box-shadow: 0 12px 28px rgba(41, 128, 254, 0.25);
    transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
}
.download-btn:hover { background: var(--blue-hover); transform: translateY(-2px); box-shadow: 0 16px 34px rgba(23,104,232,.28); }
.link-more { color: var(--blue); font-weight: 800; display: inline-flex; gap: 6px; align-items: center; }
.network-manager-hero { padding: 30px 0 54px; }
.hero-panel {
    position: relative;
    overflow: hidden;
    border-radius: 34px;
    background: var(--brand-gradient);
    color: #fff;
    padding: 34px 24px;
    box-shadow: 0 28px 80px rgba(74, 79, 220, 0.22);
}
.hero-panel:before, .hero-panel:after {
    content: "";
    position: absolute;
    width: 280px;
    height: 280px;
    border-radius: 999px;
    background: rgba(255,255,255,.16);
    filter: blur(4px);
}
.hero-panel:before { right: -90px; top: -120px; }
.hero-panel:after { left: 40%; bottom: -180px; }
.hero-grid { position: relative; z-index: 1; display: grid; gap: 28px; align-items: center; }
.hero-copy p { color: rgba(255,255,255,.88); max-width: 620px; font-size: 17px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0 26px; }
.hero-tags span { padding: 8px 12px; border-radius: 999px; background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.22); color: #fff; font-weight: 700; font-size: 14px; }
.hero-visual { position: relative; min-height: 320px; display: grid; place-items: center; }
.hero-device {
    width: min(88%, 430px);
    margin: auto;
    border-radius: 30px;
    filter: drop-shadow(0 24px 38px rgba(19, 25, 77, .24));
}
.float-card {
    position: absolute;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 16px;
    background: rgba(255,255,255,.92);
    color: #1D2939;
    box-shadow: 0 14px 34px rgba(20, 28, 78, .18);
    font-size: 14px;
    font-weight: 800;
}
.float-card:before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--blue); }
.float-1 { top: 18px; left: 4px; }
.float-2 { top: 58px; right: 2px; }
.float-3 { left: 10px; bottom: 56px; }
.float-4 { right: 10px; bottom: 18px; }
.daily-scenes { display: grid; gap: 16px; }
.scene-card, .bento-card, .white-card, .risk-card, .faq-item, .step-card, .tip-card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 22px;
    box-shadow: 0 12px 32px rgba(29, 45, 91, 0.05);
}
.scene-card .label, .bento-card .label { display: inline-flex; color: var(--blue); font-weight: 800; font-size: 13px; margin-bottom: 8px; }
.bento-feature-center { display: grid; gap: 16px; }
.bento-card.large { min-height: 250px; }
.bento-card { position: relative; overflow: hidden; }
.bento-card:after { content: ""; position: absolute; inset: auto -40px -70px auto; width: 140px; height: 140px; border-radius: 50%; background: #EEF5FF; }
.split-panel, .smart-route-panel, .device-panel, .diagnosis-panel, .account-panel {
    display: grid;
    gap: 24px;
    align-items: center;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    padding: 26px;
    box-shadow: var(--shadow);
}
.split-panel img, .smart-route-panel img, .device-panel img, .diagnosis-panel img { border-radius: 24px; background: #F7FAFF; }
.feature-points { display: grid; gap: 12px; margin: 20px 0; }
.feature-points span, .pill { display: inline-flex; align-items: center; width: fit-content; gap: 8px; padding: 9px 12px; border-radius: 999px; background: #F4F8FF; color: #344054; font-weight: 700; border: 1px solid #E3EDFF; }
.smart-route-section { background: linear-gradient(180deg, #F7FAFF 0%, #FFFFFF 100%); }
.route-list, .check-list { display: grid; gap: 12px; margin: 18px 0; }
.route-list div, .check-list div { padding: 14px; border-radius: 16px; background: #F6F8FC; border: 1px solid var(--line); }
.public-wifi-section .wifi-layout { display: grid; gap: 18px; }
.wifi-cards { display: grid; gap: 16px; }
.safety-panel {
    border-radius: var(--radius-xl);
    background: var(--brand-gradient);
    color: #fff;
    padding: 28px;
    overflow: hidden;
}
.safety-panel p { color: rgba(255,255,255,.88); }
.privacy-grid, .risk-grid, .faq-grid, .guide-grid, .related-grid { display: grid; gap: 16px; }
.privacy-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 22px; }
.process-steps { display: grid; gap: 16px; counter-reset: step; }
.step-card { position: relative; padding-top: 54px; }
.step-card:before {
    counter-increment: step;
    content: counter(step, decimal-leading-zero);
    position: absolute;
    top: 18px;
    left: 20px;
    color: var(--blue);
    background: #EEF5FF;
    border-radius: 999px;
    padding: 4px 10px;
    font-weight: 900;
}
.risk-card { border-left: 4px solid var(--blue); }
.faq-item h3 { font-size: 18px; }
.cta-section { padding: 72px 0; }
.cta-panel {
    text-align: center;
    border-radius: var(--radius-xl);
    padding: 44px 22px;
    color: #fff;
    background: var(--brand-gradient);
    box-shadow: 0 26px 60px rgba(72, 79, 224, .18);
}
.cta-panel p { color: rgba(255,255,255,.88); max-width: 680px; margin-left: auto; margin-right: auto; }
.page-hero { padding: 54px 0 28px; background: linear-gradient(180deg, #F4F8FF 0%, #FFFFFF 100%); }
.page-hero-inner { max-width: 860px; }
.content-layout { display: grid; gap: 24px; align-items: start; }
.article-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-xl); padding: 26px; box-shadow: var(--shadow); }
.sidebar { display: grid; gap: 16px; }
.note-box { border-radius: var(--radius-lg); background: #F7FAFF; border: 1px solid #E3EDFF; padding: 20px; }
.download-page-panel { text-align: center; max-width: 820px; margin: 0 auto; }
.download-steps { list-style: none; padding: 0; display: grid; gap: 14px; margin: 24px 0; text-align: left; }
.download-steps li { display: flex; gap: 12px; padding: 16px; border: 1px solid var(--line); border-radius: 18px; background: #fff; color: var(--muted); }
.download-steps strong { color: var(--blue); }
.site-footer { background: #101828; color: #fff; padding: 54px 0 24px; }
.site-footer p, .site-footer a { color: rgba(255,255,255,.72); }
.site-footer a { display: block; margin: 8px 0; }
.site-footer h3 { font-size: 17px; color: #fff; }
.footer-grid { display: grid; gap: 28px; }
.footer-brand img { width: 34px; height: 34px; border-radius: 10px; object-fit: cover; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); margin-top: 30px; padding-top: 18px; display: flex; flex-direction: column; gap: 8px; }
@media (min-width: 680px) {
    .daily-scenes { grid-template-columns: repeat(2, 1fr); }
    .privacy-grid, .risk-grid, .faq-grid, .guide-grid, .related-grid { grid-template-columns: repeat(2, 1fr); }
    .process-steps { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 920px) {
    .nav-toggle-btn { display: none; }
    .site-nav { position: static; display: flex; flex-direction: row; align-items: center; padding: 0; border: 0; box-shadow: none; background: transparent; }
    .site-nav a { padding: 8px 10px; font-size: 14px; }
    .hero-panel { padding: 56px; }
    .hero-grid { grid-template-columns: 1.02fr .98fr; }
    .daily-scenes { grid-template-columns: repeat(3, 1fr); }
    .bento-feature-center { grid-template-columns: repeat(6, 1fr); }
    .bento-card { grid-column: span 2; min-height: 190px; }
    .bento-card.large { grid-column: span 3; min-height: 270px; }
    .split-panel, .smart-route-panel, .device-panel, .diagnosis-panel, .account-panel { grid-template-columns: 1fr 1fr; padding: 34px; }
    .public-wifi-section .wifi-layout { grid-template-columns: 1.1fr .9fr; align-items: center; }
    .wifi-cards { grid-template-columns: repeat(3, 1fr); }
    .privacy-grid, .risk-grid { grid-template-columns: repeat(3, 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) 320px; }
    .article-card { padding: 34px; }
    .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
    .footer-bottom { flex-direction: row; justify-content: space-between; }
}
@media (min-width: 1120px) {
    .site-nav a { padding: 9px 12px; }
}
@media (max-width: 380px) {
    .container { width: min(100% - 24px, 1180px); }
    .hero-panel { padding: 28px 18px; border-radius: 26px; }
    .float-card { font-size: 12px; padding: 8px 10px; }
    .download-btn { width: 100%; }
}