:root {
    --brand-gradient: linear-gradient(90deg, #3558F2 0%, #7B4EF1 50%, #B84DDA 100%);
    --blue: #2980FE;
    --blue-hover: #1768E8;
    --text: #20263A;
    --muted: #687188;
    --soft: #F5F7FB;
    --line: #E7EBF3;
    --card: #FFFFFF;
    --deep: #151B2F;
    --radius-xl: 34px;
    --radius-lg: 26px;
    --radius-md: 18px;
    --shadow: 0 18px 50px rgba(43, 64, 120, .10);
    --shadow-soft: 0 10px 28px rgba(43, 64, 120, .08);
}
* { 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;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(231,235,243,.82);
}
.header-inner, .section-container, .footer-inner, .footer-bottom, .page-container {
    width: min(100% - 32px, 1160px);
    margin: 0 auto;
}
.header-inner {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    flex-wrap: wrap;
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; color: var(--deep); letter-spacing: .2px; }
.brand-logo { width: 38px; height: 38px; border-radius: 12px; object-fit: cover; box-shadow: 0 8px 18px rgba(41,128,254,.16); }
.nav-check { position: absolute; opacity: 0; pointer-events: none; }
.nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 64px;
    height: 40px;
    padding: 0 14px;
    border-radius: 999px;
    background: #F0F4FF;
    color: var(--blue);
    font-weight: 700;
    cursor: pointer;
}
.site-nav {
    display: none;
    width: 100%;
    padding: 0 0 14px;
    gap: 8px;
    flex-direction: column;
}
.nav-check:checked ~ .site-nav { display: flex; }
.site-nav a {
    padding: 10px 12px;
    border-radius: 14px;
    color: #47516A;
    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: 13px 24px;
    border-radius: 999px;
    background: var(--blue);
    color: #fff;
    font-weight: 800;
    letter-spacing: .2px;
    box-shadow: 0 12px 26px rgba(41,128,254,.26);
    transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
}
.download-btn:hover { background: var(--blue-hover); transform: translateY(-2px); box-shadow: 0 15px 30px rgba(23,104,232,.30); }
.section-container { padding: 58px 0; }
.section-head { max-width: 720px; margin-bottom: 26px; }
.section-eyebrow, .badge {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    background: #EDF4FF;
    color: var(--blue);
    font-size: 13px;
    font-weight: 800;
}
h1, h2, h3 { line-height: 1.22; margin: 0 0 14px; color: var(--deep); }
h1 { font-size: clamp(34px, 8vw, 64px); letter-spacing: -1.8px; }
h2 { font-size: clamp(26px, 5.8vw, 42px); letter-spacing: -1px; }
h3 { font-size: 20px; }
p { margin: 0 0 14px; color: var(--muted); }
.lead { font-size: 17px; color: #EEF4FF; max-width: 620px; }
.network-manager-hero {
    width: min(100% - 32px, 1200px);
    margin: 28px auto 0;
    min-height: 620px;
    padding: 32px;
    display: grid;
    align-items: center;
    gap: 28px;
    border-radius: var(--radius-xl);
    background: var(--brand-gradient);
    position: relative;
    overflow: hidden;
    box-shadow: 0 24px 70px rgba(62,79,204,.24);
}
.network-manager-hero:before, .network-manager-hero:after {
    content: "";
    position: absolute;
    border-radius: 999px;
    filter: blur(8px);
    background: rgba(255,255,255,.16);
}
.network-manager-hero:before { width: 240px; height: 240px; right: -80px; top: -90px; }
.network-manager-hero:after { width: 180px; height: 180px; left: 30%; bottom: -90px; }
.hero-copy, .hero-visual { position: relative; z-index: 2; }
.hero-copy h1, .hero-copy p { color: #fff; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin: 22px 0; }
.hero-note { color: rgba(255,255,255,.82); font-size: 14px; }
.hero-tags, .floating-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-tags span, .floating-tags span {
    display: inline-flex;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(255,255,255,.18);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    border: 1px solid rgba(255,255,255,.22);
}
.hero-visual {
    display: grid;
    place-items: center;
    min-height: 360px;
}
.visual-card {
    width: min(100%, 440px);
    padding: 18px;
    border-radius: 30px;
    background: rgba(255,255,255,.18);
    border: 1px solid rgba(255,255,255,.25);
    box-shadow: inset 0 1px 0 rgba(255,255,255,.22);
}
.visual-card img { border-radius: 24px; margin: 0 auto; }
.status-card {
    position: absolute;
    left: 8px;
    bottom: 10px;
    width: 210px;
    padding: 16px;
    border-radius: 22px;
    background: rgba(255,255,255,.92);
    box-shadow: var(--shadow);
}
.status-card strong { display: block; color: var(--deep); }
.status-card span { color: var(--muted); font-size: 13px; }
.floating-tags { margin-top: 14px; justify-content: center; }
.daily-scenes, .risk-grid, .faq-grid, .card-grid, .process-steps {
    display: grid;
    gap: 16px;
}
.scene-card, .bento-card, .info-card, .risk-card, .faq-item, .step-card, .page-card, .tip-box {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 22px;
    box-shadow: var(--shadow-soft);
}
.scene-card .tag, .bento-card .tag, .risk-card .tag { color: var(--blue); font-weight: 800; font-size: 13px; }
.scene-card a, .bento-card a, .text-link, .page-card a, .faq-link {
    color: var(--blue);
    font-weight: 800;
    display: inline-flex;
    margin-top: 8px;
}
.bento-feature-center {
    display: grid;
    gap: 16px;
}
.bento-card { min-height: 180px; display: flex; flex-direction: column; justify-content: space-between; }
.bento-card.featured {
    background: linear-gradient(135deg, #FFFFFF 0%, #F2F7FF 100%);
}
.split-panel, .smart-card, .privacy-panel, .multi-panel, .diagnosis-panel, .account-panel, .cta-section {
    border-radius: var(--radius-xl);
    padding: 24px;
    background: var(--soft);
    border: 1px solid var(--line);
    overflow: hidden;
}
.split-panel { display: grid; gap: 24px; align-items: center; background: #fff; box-shadow: var(--shadow-soft); }
.split-panel img, .smart-card img, .privacy-panel img, .multi-panel img, .diagnosis-panel img { border-radius: 28px; margin: 0 auto; }
.point-list { display: grid; gap: 10px; margin: 18px 0; padding: 0; list-style: none; }
.point-list li {
    padding: 12px 14px;
    border-radius: 16px;
    background: #F6F8FC;
    color: #45506A;
}
.smart-route-section { background: linear-gradient(180deg, #F7FAFF 0%, #fff 100%); }
.smart-card { display: grid; gap: 22px; background: linear-gradient(135deg, #F7FAFF, #FFFFFF); }
.route-meter { display: grid; gap: 12px; }
.route-meter div { padding: 14px; border-radius: 18px; background: #fff; border: 1px solid var(--line); }
.public-wifi-section .wifi-panel {
    display: grid;
    gap: 18px;
    padding: 24px;
    border-radius: var(--radius-xl);
    background: #fff;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-soft);
}
.wifi-cards, .privacy-cards, .device-cards, .account-list { display: grid; gap: 14px; }
.privacy-panel { background: linear-gradient(135deg, #FFFFFF 0%, #F7F4FF 100%); }
.multi-panel { background: #fff; display: grid; gap: 20px; box-shadow: var(--shadow-soft); }
.device-mini { padding: 16px; border-radius: 18px; background: #F6F8FC; border: 1px solid var(--line); }
.network-diagnosis-section { background: #F7FAFF; }
.diagnosis-panel { background: #fff; display: grid; gap: 20px; }
.step-card { position: relative; padding-top: 48px; }
.step-num {
    position: absolute;
    top: 18px;
    left: 22px;
    width: 28px;
    height: 28px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--blue);
    color: #fff;
    font-weight: 800;
    font-size: 13px;
}
.risk-card { border-left: 4px solid var(--blue); }
.account-panel { background: #fff; box-shadow: var(--shadow-soft); }
.check-item { padding: 14px; border-radius: 18px; background: #F7F9FD; border: 1px solid var(--line); }
.cta-section {
    background: var(--brand-gradient);
    color: #fff;
    text-align: center;
    margin-bottom: 40px;
}
.cta-section h2, .cta-section p { color: #fff; }
.cta-section p { max-width: 680px; margin: 0 auto 20px; color: rgba(255,255,255,.86); }
.page-hero {
    width: min(100% - 32px, 1160px);
    margin: 28px auto 0;
    padding: 42px 24px;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, #F2F7FF 0%, #FFFFFF 55%, #F8F1FF 100%);
    border: 1px solid var(--line);
}
.page-hero p { max-width: 760px; font-size: 17px; }
.content-layout { display: grid; gap: 24px; align-items: start; }
.article-body { display: grid; gap: 18px; }
.article-body .panel { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 24px; box-shadow: var(--shadow-soft); }
.side-panel { display: grid; gap: 16px; }
.aside-card { background: #F7FAFF; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 22px; }
.list-clean { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.list-clean li { padding: 12px 14px; background: #fff; border: 1px solid var(--line); border-radius: 16px; color: #4F5A72; }
.download-panel { text-align: center; padding: 26px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow-soft); }
.download-steps { counter-reset: steps; display: grid; gap: 14px; margin: 20px 0; }
.download-steps div { padding: 18px; border-radius: 18px; border: 1px solid var(--line); background: #F7FAFF; }
.faq-item h3 { margin-bottom: 8px; }
.site-footer { background: #10182B; color: #fff; padding: 46px 0 20px; margin-top: 48px; }
.site-footer p, .site-footer a { color: rgba(255,255,255,.72); }
.footer-inner { display: grid; gap: 28px; }
.footer-brand { max-width: 420px; }
.footer-logo span { color: #fff; }
.footer-links { display: grid; gap: 18px; }
.footer-links div { display: grid; gap: 8px; }
.footer-links h3 { color: #fff; font-size: 16px; margin-bottom: 4px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.10); margin-top: 26px; padding-top: 18px; color: rgba(255,255,255,.58); font-size: 14px; }
@media (min-width: 700px) {
    .daily-scenes, .risk-grid, .faq-grid, .card-grid, .process-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .privacy-cards, .wifi-cards, .device-cards, .account-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-links { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (min-width: 980px) {
    .nav-toggle { display: none; }
    .site-nav { display: flex; width: auto; flex-direction: row; align-items: center; padding: 0; flex-wrap: wrap; justify-content: flex-end; }
    .network-manager-hero { grid-template-columns: 1.05fr .95fr; padding: 54px; }
    .daily-scenes { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .bento-feature-center { grid-template-columns: repeat(4, minmax(0, 1fr)); grid-auto-rows: minmax(175px, auto); }
    .bento-card.large { grid-column: span 2; grid-row: span 2; }
    .bento-card.wide { grid-column: span 2; }
    .split-panel, .smart-card, .multi-panel, .diagnosis-panel { grid-template-columns: 1fr 1fr; padding: 36px; }
    .privacy-panel { padding: 36px; }
    .privacy-cards, .wifi-cards, .account-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .risk-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .process-steps { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .content-layout { grid-template-columns: minmax(0, 1fr) 320px; }
    .footer-inner { grid-template-columns: .9fr 1.4fr; }
    .page-hero { padding: 56px; }
}
@media (max-width: 430px) {
    .header-inner, .section-container, .footer-inner, .footer-bottom, .page-container { width: min(100% - 24px, 1160px); }
    .network-manager-hero { width: min(100% - 20px, 1200px); padding: 24px 18px; border-radius: 26px; }
    .status-card { position: static; width: 100%; margin-top: 12px; }
    .download-btn { width: 100%; }
    .scene-card, .bento-card, .info-card, .risk-card, .faq-item, .step-card, .page-card, .tip-box { padding: 18px; }
}