:root {
    --gradient: linear-gradient(90deg, #3558F2 0%, #7B4EF1 50%, #B84DDA 100%);
    --blue: #2980FE;
    --blue-dark: #1768E8;
    --text: #1f2937;
    --muted: #667085;
    --light: #f5f7fb;
    --line: #e6ebf2;
    --card: #ffffff;
    --deep: #111827;
    --radius-xl: 34px;
    --radius-lg: 26px;
    --radius-md: 18px;
    --shadow: 0 20px 60px rgba(27, 47, 96, 0.10);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    color: var(--text);
    background: #f7f9fc;
    line-height: 1.72;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(230, 235, 242, 0.86);
}
.header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand, .footer-brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; color: var(--deep); }
.brand-logo, .footer-logo { width: 42px; height: 42px; object-fit: cover; border-radius: 12px; box-shadow: 0 8px 26px rgba(41,128,254,.16); }
.brand-text { font-size: 19px; letter-spacing: .3px; }
.nav-toggle { width: 44px; height: 44px; border: 1px solid var(--line); background: #fff; border-radius: 14px; display: grid; place-content: center; gap: 5px; }
.nav-toggle span { display: block; width: 19px; height: 2px; background: #243044; border-radius: 99px; }
.site-nav { display: none; position: absolute; left: 16px; right: 16px; top: 78px; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); border-radius: 22px; padding: 12px; }
.site-nav.open { display: grid; }
.site-nav a { padding: 12px 14px; color: #344054; border-radius: 14px; font-weight: 650; font-size: 15px; }
.site-nav a.active, .site-nav a:hover { background: #edf5ff; color: var(--blue); }
main { min-height: 70vh; }
.section { padding: 54px 0; }
.section-title { margin: 0 0 14px; font-size: clamp(28px, 4vw, 44px); line-height: 1.18; color: var(--deep); letter-spacing: -0.03em; }
.section-lead { margin: 0 auto 28px; color: var(--muted); font-size: 17px; max-width: 720px; }
.eyebrow, .badge { display: inline-flex; align-items: center; gap: 8px; color: var(--blue); background: #edf5ff; border: 1px solid #d9e8ff; font-size: 13px; font-weight: 750; border-radius: 999px; padding: 6px 12px; margin-bottom: 16px; }
.download-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; background: #2980FE; color: #fff; border-radius: 999px; font-weight: 760; box-shadow: 0 14px 30px rgba(41,128,254,.24); transition: transform .2s ease, background .2s ease, box-shadow .2s ease; }
.download-btn:hover { background: #1768E8; transform: translateY(-2px); box-shadow: 0 18px 38px rgba(23,104,232,.28); }
.text-link { display: inline-flex; margin-top: 14px; color: var(--blue); font-weight: 760; }
.text-link::after { content: "→"; margin-left: 6px; }
.network-manager-hero { padding: 22px 0 46px; }
.hero-panel { background: var(--gradient); color: #fff; border-radius: 36px; padding: 30px 22px; position: relative; overflow: hidden; box-shadow: 0 30px 80px rgba(62, 91, 233, 0.22); }
.hero-panel::before { content: ""; position: absolute; width: 420px; height: 420px; border-radius: 999px; background: rgba(255,255,255,.18); right: -160px; top: -120px; filter: blur(2px); }
.hero-grid { position: relative; display: grid; gap: 30px; align-items: center; }
.hero-copy h1 { margin: 0 0 16px; font-size: clamp(36px, 7vw, 66px); line-height: 1.04; letter-spacing: -0.045em; }
.hero-copy p { margin: 0 0 22px; color: rgba(255,255,255,.90); font-size: 17px; max-width: 600px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.hero-tags span, .floating-label { padding: 8px 12px; border-radius: 999px; background: rgba(255,255,255,.16); border: 1px solid rgba(255,255,255,.24); color: #fff; font-size: 13px; font-weight: 650; }
.hero-visual { position: relative; min-height: 320px; display: grid; place-items: center; }
.hero-device-card { width: min(360px, 90%); padding: 18px; border-radius: 32px; background: rgba(255,255,255,.18); border: 1px solid rgba(255,255,255,.28); box-shadow: 0 18px 55px rgba(11,26,77,.2); }
.hero-device-card img { border-radius: 24px; margin: 0 auto; }
.status-card { position: absolute; right: 6px; bottom: 10px; width: 190px; background: #fff; color: #223044; border-radius: 22px; padding: 14px; box-shadow: 0 16px 42px rgba(16,24,40,.18); }
.status-card strong { display: block; font-size: 15px; }
.status-card span { color: var(--muted); font-size: 13px; }
.floating-label { position: absolute; background: rgba(255,255,255,.95); color: #25304a; box-shadow: 0 10px 28px rgba(16,24,40,.16); }
.label-one { left: 0; top: 26px; }
.label-two { right: 8px; top: 86px; }
.label-three { left: 22px; bottom: 74px; }
.label-four { right: 30px; bottom: 128px; }
.daily-scenes { background: #fff; }
.scene-grid { display: grid; gap: 16px; }
.scene-card, .bento-card, .content-card, .risk-card, .faq-item, .mini-card, .step-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 22px; box-shadow: 0 12px 34px rgba(27,47,96,.06); }
.scene-card .tag, .bento-card .tag { display: inline-block; color: var(--blue); background: #edf5ff; border-radius: 999px; padding: 4px 10px; font-size: 12px; font-weight: 760; margin-bottom: 12px; }
.scene-card h3, .bento-card h3, .mini-card h3 { margin: 0 0 8px; color: var(--deep); font-size: 21px; }
.scene-card p, .bento-card p, .mini-card p { color: var(--muted); margin: 0; }
.bento-feature-center { background: linear-gradient(180deg, #f7f9fc 0%, #ffffff 100%); }
.bento-grid { display: grid; gap: 16px; }
.bento-card.large { background: linear-gradient(180deg, #fff 0%, #f2f7ff 100%); }
.feature-split, .smart-layout, .multi-layout, .diagnosis-layout, .account-layout { display: grid; gap: 24px; align-items: center; }
.feature-panel { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-xl); padding: 24px; box-shadow: var(--shadow); overflow: hidden; }
.feature-panel img { border-radius: 26px; margin: 0 auto; }
.feature-points { display: grid; gap: 12px; margin: 22px 0; }
.feature-points li, .check-list li { list-style: none; position: relative; padding-left: 28px; color: #475467; }
.feature-points li::before, .check-list li::before { content: ""; position: absolute; left: 0; top: .62em; width: 10px; height: 10px; background: var(--blue); border-radius: 99px; box-shadow: 0 0 0 5px #e8f2ff; }
.smart-route-section { background: #f1f6ff; }
.route-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-xl); padding: 24px; box-shadow: var(--shadow); }
.route-line { display: flex; justify-content: space-between; align-items: center; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); color: #475467; }
.route-line:last-child { border-bottom: 0; }
.route-pill { color: var(--blue); background: #edf5ff; border-radius: 999px; padding: 4px 10px; font-size: 12px; font-weight: 760; }
.public-wifi-section { background: #fff; }
.wifi-grid { display: grid; gap: 16px; align-items: stretch; }
.wifi-image-card { background: linear-gradient(180deg, #eef5ff, #fff); border: 1px solid var(--line); border-radius: var(--radius-xl); padding: 24px; display: grid; place-items: center; }
.privacy-guard-section { background: #f7f9fc; }
.privacy-panel { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-xl); padding: 24px; box-shadow: var(--shadow); }
.privacy-grid, .risk-grid, .faq-grid, .info-grid { display: grid; gap: 16px; }
.multi-device-section { background: #fff; }
.device-stack { display: grid; gap: 14px; }
.device-card { border: 1px solid var(--line); border-radius: 24px; background: #fff; padding: 18px; box-shadow: 0 12px 30px rgba(27,47,96,.06); }
.device-card img { max-height: 260px; margin: 0 auto; object-fit: contain; }
.network-diagnosis-section { background: #f1f6ff; }
.diagnosis-steps { counter-reset: step; display: grid; gap: 14px; }
.diagnosis-step { background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: 18px; position: relative; padding-left: 58px; }
.diagnosis-step::before { counter-increment: step; content: counter(step); position: absolute; left: 18px; top: 18px; width: 28px; height: 28px; border-radius: 10px; background: var(--blue); color: #fff; display: grid; place-items: center; font-weight: 800; }
.account-security-section { background: #fff; }
.safety-panel { background: var(--gradient); color: #fff; border-radius: var(--radius-xl); padding: 26px; position: relative; overflow: hidden; }
.safety-panel p { color: rgba(255,255,255,.88); }
.process-steps { background: #fff; }
.step-grid { display: grid; gap: 16px; }
.step-num { width: 38px; height: 38px; display: grid; place-items: center; background: #edf5ff; color: var(--blue); border-radius: 14px; font-weight: 800; margin-bottom: 14px; }
.risk-section { background: #f7f9fc; }
.risk-card { border-left: 4px solid var(--blue); }
.risk-card strong { display: block; color: var(--deep); margin-bottom: 6px; }
.faq-section { background: #fff; }
.faq-item h3 { margin: 0 0 8px; font-size: 18px; color: var(--deep); }
.faq-item p { margin: 0; color: var(--muted); }
.cta-section { padding: 58px 0 72px; }
.cta-panel { background: var(--gradient); color: #fff; border-radius: 36px; padding: 34px 24px; text-align: center; box-shadow: 0 26px 70px rgba(62,91,233,.18); }
.cta-panel h2 { margin: 0 0 12px; font-size: clamp(28px, 5vw, 44px); line-height: 1.15; }
.cta-panel p { margin: 0 auto 22px; color: rgba(255,255,255,.88); max-width: 680px; }
.page-hero { padding: 42px 0 20px; }
.page-hero-box { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-xl); padding: 28px; box-shadow: var(--shadow); }
.page-hero h1 { margin: 0 0 14px; color: var(--deep); font-size: clamp(32px, 6vw, 54px); line-height: 1.12; letter-spacing: -0.04em; }
.page-hero p { margin: 0; color: var(--muted); font-size: 17px; max-width: 780px; }
.page-content { padding: 24px 0 64px; }
.detail-layout { display: grid; gap: 20px; align-items: start; }
.article-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-xl); padding: 24px; box-shadow: var(--shadow); }
.article-card h2 { margin: 8px 0 12px; color: var(--deep); }
.article-card p { color: #475467; margin: 0 0 16px; }
.article-card .download-btn { margin-top: 8px; }
.side-panel { background: #f1f6ff; border: 1px solid #dbe8ff; border-radius: var(--radius-lg); padding: 20px; position: sticky; top: 96px; }
.side-panel h3 { margin: 0 0 12px; color: var(--deep); }
.side-panel a { display: block; color: var(--blue); font-weight: 760; padding: 8px 0; }
.notice-box { background: #f8fbff; border: 1px solid var(--line); border-radius: 22px; padding: 18px; margin: 18px 0; }
.check-list { padding: 0; margin: 14px 0 0; display: grid; gap: 10px; }
.number-list { padding-left: 20px; color: #475467; }
.number-list li { margin: 8px 0; }
.download-steps { counter-reset: item; display: grid; gap: 14px; margin: 24px 0; }
.download-step { counter-increment: item; background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: 18px 18px 18px 58px; position: relative; }
.download-step::before { content: counter(item); position: absolute; left: 18px; top: 18px; width: 28px; height: 28px; border-radius: 10px; background: var(--blue); color: #fff; display: grid; place-items: center; font-weight: 800; }
.center-card { text-align: center; }
.download-page-card { max-width: 860px; margin: 0 auto; }
.site-footer { background: #101828; color: #d0d5dd; padding: 46px 0 22px; }
.footer-grid { display: grid; gap: 24px; }
.site-footer p { color: #98a2b3; margin: 14px 0 0; }
.site-footer h3 { color: #fff; margin: 0 0 12px; font-size: 16px; }
.site-footer a { display: block; color: #d0d5dd; padding: 4px 0; }
.footer-brand { color: #fff; }
.footer-bottom { margin-top: 28px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.12); color: #98a2b3; font-size: 14px; }
@media (min-width: 640px) {
    .scene-grid, .wifi-grid, .privacy-grid, .risk-grid, .faq-grid, .info-grid, .step-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .bento-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .hero-panel { padding: 42px 34px; }
}
@media (min-width: 920px) {
    .nav-toggle { display: none; }
    .site-nav { display: flex; position: static; background: transparent; border: 0; box-shadow: none; padding: 0; align-items: center; gap: 4px; }
    .site-nav a { padding: 9px 11px; font-size: 14px; }
    .hero-grid { grid-template-columns: 1.05fr .95fr; }
    .hero-panel { padding: 58px 52px; }
    .scene-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .bento-grid { grid-template-columns: repeat(4, 1fr); grid-auto-rows: minmax(180px, auto); }
    .bento-card.large { grid-column: span 2; grid-row: span 2; }
    .bento-card.wide { grid-column: span 2; }
    .feature-split, .smart-layout, .multi-layout, .diagnosis-layout, .account-layout { grid-template-columns: 1fr 1fr; }
    .wifi-grid { grid-template-columns: 1.2fr .8fr; }
    .privacy-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .step-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .risk-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .faq-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .detail-layout { grid-template-columns: minmax(0, 1fr) 310px; }
    .footer-grid { grid-template-columns: 1.4fr .8fr .8fr .8fr; }
    .page-hero-box { padding: 44px; }
    .section { padding: 74px 0; }
}
@media (min-width: 1180px) {
    .site-nav a { padding: 10px 14px; font-size: 15px; }
}
@media (max-width: 520px) {
    .container { width: min(100% - 24px, 1120px); }
    .hero-panel, .cta-panel { border-radius: 28px; }
    .hero-panel { padding: 28px 18px; }
    .status-card { position: relative; right: auto; bottom: auto; width: 100%; margin-top: 14px; }
    .floating-label { position: static; margin: 6px; display: inline-flex; }
    .hero-visual { min-height: auto; display: block; }
    .hero-device-card { width: 100%; }
    .download-btn { width: 100%; }
    .section { padding: 44px 0; }
    .page-content { padding-bottom: 44px; }
}