:root {
  --bg: #F5F7FF;
  --ink: #1F2740;
  --muted: #66708A;
  --soft: #9AA4BA;
  --title: #131A35;
  --brand: #5B6CFF;
  --brand-2: #7A5CFF;
  --cyan: #00D4FF;
  --gold: #FFC857;
  --rose: #D94F70;
  --navy: #16213E;
  --card: #FFFFFF;
  --line: rgba(91,108,255,.18);
  --shadow: 0 20px 46px rgba(25,43,91,.14);
  --radius: 24px;
  --container: 1240px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.75; overflow-x: hidden; }
body.drawer-open { overflow: hidden; }
a { color: inherit; }
img { max-width: 100%; height: auto; display: block; }
button, a { -webkit-tap-highlight-color: transparent; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 20000; background: #fff; color: var(--title); padding: 10px 16px; border-radius: 12px; box-shadow: var(--shadow); }
.skip-link:focus { top: 12px; }
.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.site-header { position: sticky; top: 0; width: 100%; z-index: 9999; background: rgba(12,18,40,.94); backdrop-filter: blur(12px); box-shadow: 0 8px 26px rgba(25,43,91,.16); }
.header-inner { width: min(calc(100% - 36px), 1280px); margin: 0 auto; min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
.site-logo { display: inline-flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; min-width: max-content; }
.site-logo img { width: auto; max-width: 42px; max-height: 44px; object-fit: contain; }
.site-logo strong { font-size: 19px; letter-spacing: .03em; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 8px; }
.nav-core a { color: #EEF2FF; text-decoration: none; border-radius: 999px; padding: 8px 12px; font-size: 15px; white-space: nowrap; }
.nav-core a:hover, .nav-core a.active { color: #fff; background: rgba(0,212,255,.16); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.main-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 0 24px; background: linear-gradient(135deg, #5B6CFF 0%, #7A5CFF 48%, #00D4FF 100%); color: #fff; border-radius: 999px; box-shadow: 0 14px 32px rgba(91,108,255,.22); text-decoration: none; font-weight: 700; border: 0; transition: transform .2s ease, box-shadow .2s ease; }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 18px 38px rgba(91,108,255,.3); }
.ghost-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 22px; border-radius: 999px; border: 1px solid var(--line); background: rgba(255,255,255,.75); color: var(--brand); text-decoration: none; font-weight: 700; }
.menu-button { width: 44px; height: 44px; border: 1px solid rgba(255,255,255,.18); border-radius: 14px; background: rgba(255,255,255,.08); display: grid; place-content: center; gap: 4px; cursor: pointer; }
.menu-button span { display: block; width: 20px; height: 2px; border-radius: 2px; background: #fff; }
.mobile-menu-button { display: none; }
.drawer-overlay { position: fixed; inset: 0; z-index: 10000; background: rgba(4,7,20,.58); opacity: 0; transition: opacity .24s ease; }
.drawer-overlay.show { opacity: 1; }
.site-drawer { position: fixed; z-index: 10001; top: 0; right: 0; width: min(390px, 90vw); height: 100dvh; padding: 24px; background: #fff; box-shadow: -24px 0 60px rgba(11,16,36,.28); transform: translateX(105%); transition: transform .28s ease; overflow-y: auto; }
.site-drawer.open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.drawer-brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--title); font-weight: 800; }
.drawer-brand img { width: 40px; max-height: 42px; object-fit: contain; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 50%; background: #EFF2FF; color: var(--title); font-size: 28px; cursor: pointer; }
.drawer-nav { display: grid; gap: 8px; padding: 18px 0; }
.drawer-nav a { display: flex; justify-content: space-between; align-items: center; padding: 12px 14px; border-radius: 14px; text-decoration: none; color: var(--ink); }
.drawer-nav a:hover, .drawer-nav a.active { background: #EFF2FF; color: var(--brand); }
.drawer-nav b { font-weight: 500; }
.drawer-note { padding: 18px; border-radius: 18px; background: linear-gradient(135deg, #EFF8FF, #FFF4F8); color: var(--muted); }
.drawer-note strong { color: var(--title); }
.drawer-note p { margin: 6px 0 0; font-size: 14px; }
.site-main { min-height: 60vh; }
.hero { position: relative; overflow: hidden; padding: 84px 0 70px; background: radial-gradient(circle at 15% 20%, rgba(0,212,255,.18), transparent 32%), radial-gradient(circle at 85% 22%, rgba(217,79,112,.15), transparent 30%), linear-gradient(135deg, #F8F4FF 0%, #ECF8FF 52%, #FFF5FA 100%); }
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 50%; filter: blur(2px); pointer-events: none; }
.hero::before { width: 220px; height: 220px; left: -80px; bottom: -90px; background: rgba(122,92,255,.12); }
.hero::after { width: 180px; height: 180px; right: 4%; top: 13%; background: rgba(0,212,255,.1); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.03fr .97fr; align-items: center; gap: 58px; }
.eyebrow, .section-kicker { display: inline-flex; align-items: center; gap: 8px; color: var(--brand); font-weight: 800; letter-spacing: .08em; font-size: 13px; text-transform: uppercase; }
.eyebrow::before, .section-kicker::before { content: ""; width: 28px; height: 3px; border-radius: 99px; background: linear-gradient(90deg, var(--brand), var(--cyan)); }
h1, h2, h3, .section-title { color: var(--title); line-height: 1.24; margin-top: 0; }
h1 { margin: 18px 0 16px; font-size: clamp(44px, 6vw, 78px); letter-spacing: -.035em; }
.hero-subtitle { margin: 0 0 18px; color: var(--brand-2); font-size: clamp(21px, 2.2vw, 31px); font-weight: 800; }
.hero-copy { font-size: 17px; color: var(--muted); max-width: 720px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.hero-points span { display: inline-flex; align-items: center; gap: 8px; padding: 9px 14px; border-radius: 999px; background: rgba(255,255,255,.72); border: 1px solid rgba(91,108,255,.14); color: var(--title); font-size: 14px; }
.hero-points span::before { content: "✓"; color: var(--brand); font-weight: 900; }
.hero-visual { position: relative; }
.hero-visual img { width: 100%; max-height: 600px; object-fit: contain; filter: drop-shadow(0 28px 44px rgba(34,47,92,.2)); }
.floating-note { position: absolute; right: 2%; bottom: 5%; max-width: 220px; padding: 16px 18px; border-radius: 18px; background: rgba(17,24,47,.92); color: #fff; box-shadow: 0 18px 44px rgba(17,24,47,.25); }
.floating-note strong { display: block; font-size: 15px; }
.floating-note span { color: #DCE6FF; font-size: 13px; }
.section { padding: 88px 0; }
.section-sm { padding: 56px 0; }
.section-soft { background: linear-gradient(180deg, rgba(234,247,255,.72), rgba(245,247,255,0)); }
.section-dark { background: #11182F; color: #EEF2FF; }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-heading { max-width: 780px; margin-bottom: 34px; }
.section-heading.center { text-align: center; margin-left: auto; margin-right: auto; }
.section-heading h2 { margin: 10px 0 12px; font-size: clamp(30px, 4vw, 48px); }
.section-heading p { margin: 0; color: var(--muted); }
.section-dark .section-heading p { color: #BFC9E0; }
.card, .zone-card, .info-card, .review-card { background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); border-radius: var(--radius); }
.highlights { margin-top: -28px; position: relative; z-index: 3; display: grid; grid-template-columns: repeat(4,1fr); overflow: hidden; }
.highlight-item { padding: 26px; background: #fff; border-right: 1px solid var(--line); }
.highlight-item:last-child { border-right: 0; }
.highlight-item b { display: block; color: var(--title); font-size: 18px; margin-bottom: 6px; }
.highlight-item p { color: var(--muted); font-size: 14px; margin: 0; }
.quick-channels { display: flex; flex-wrap: wrap; gap: 12px; }
.channel-pill { flex: 1 1 210px; padding: 14px 16px; background: #fff; border: 1px solid var(--line); border-radius: 999px; text-decoration: none; transition: transform .2s ease, border-color .2s ease; }
.channel-pill:hover { transform: translateY(-2px); border-color: rgba(91,108,255,.5); }
.channel-pill strong { color: var(--title); display: block; font-size: 15px; }
.channel-pill span { color: var(--muted); display: block; font-size: 12px; line-height: 1.45; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; align-items: center; }
.split.reverse .media { order: 2; }
.media img, .content-img, .zone-card img, .app-section img { width: 100%; max-height: 560px; object-fit: contain; border-radius: 20px; }
.content h2 { font-size: clamp(30px, 3.5vw, 44px); margin-bottom: 18px; }
.content p { color: var(--muted); }
.text-link { display: inline-flex; align-items: center; gap: 8px; color: var(--brand); font-weight: 800; text-decoration: none; margin-top: 10px; }
.text-link::after { content: "→"; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(4px); }
.feature-list { display: grid; gap: 12px; margin: 22px 0; padding: 0; list-style: none; }
.feature-list li { position: relative; padding-left: 28px; color: var(--ink); }
.feature-list li::before { content: ""; position: absolute; left: 0; top: .75em; width: 11px; height: 11px; border-radius: 50%; background: linear-gradient(135deg,var(--brand),var(--cyan)); box-shadow: 0 0 0 5px rgba(91,108,255,.1); }
.two-col, .three-col, .four-col { display: grid; gap: 24px; }
.two-col { grid-template-columns: repeat(2,1fr); }
.three-col { grid-template-columns: repeat(3,1fr); }
.four-col { grid-template-columns: repeat(4,1fr); }
.zone-card { overflow: hidden; }
.zone-card .zone-media { background: linear-gradient(135deg,#EDF2FF,#F8FBFF); padding: 18px; }
.zone-card .zone-body { padding: 26px; }
.zone-card h3 { font-size: 24px; margin-bottom: 10px; }
.zone-card p { color: var(--muted); margin: 0 0 12px; }
.service-card { padding: 28px; }
.service-card .number { display: inline-grid; place-items: center; width: 42px; height: 42px; border-radius: 14px; background: #EFF2FF; color: var(--brand); font-weight: 900; margin-bottom: 18px; }
.service-card h3 { margin-bottom: 10px; }
.service-card p { color: var(--muted); }
.security-panel { display: grid; grid-template-columns: .95fr 1.05fr; gap: 26px; padding: 28px; background: linear-gradient(135deg,#11182F,#172446); color: #EEF2FF; border-radius: 30px; box-shadow: var(--shadow); }
.security-panel h2, .security-panel h3 { color: #fff; }
.security-panel p { color: #C4CEE3; }
.security-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.security-item { padding: 18px; border-radius: 18px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.1); }
.security-item strong { display: block; color: #fff; }
.security-item span { color: #C4CEE3; font-size: 14px; }
.reviews { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.review-card { padding: 24px; }
.review-card p { margin: 0 0 16px; color: var(--ink); }
.review-card footer { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 13px; }
.review-card footer::before { content: ""; width: 32px; height: 32px; border-radius: 50%; background: linear-gradient(135deg,var(--brand),var(--rose)); }
.faq-list { display: grid; gap: 12px; }
details.faq-item { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 0 20px; }
details.faq-item summary { cursor: pointer; list-style: none; padding: 20px 34px 20px 0; color: var(--title); font-weight: 800; position: relative; }
details.faq-item summary::-webkit-details-marker { display: none; }
details.faq-item summary::after { content: "+"; position: absolute; right: 0; top: 14px; width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; background: #EFF2FF; color: var(--brand); font-size: 22px; }
details.faq-item[open] summary::after { content: "−"; }
details.faq-item p { color: var(--muted); margin: 0; padding: 0 0 20px; }
.notice { padding: 28px; border-radius: 24px; background: linear-gradient(135deg,#FFF4D6,#FFF7ED 52%,#F2F7FF); border: 1px solid rgba(255,200,87,.35); }
.notice h2, .notice h3 { margin-bottom: 10px; }
.notice p { margin: 0; color: #665B45; }
.inner-hero { padding: 76px 0 56px; background: radial-gradient(circle at 14% 20%, rgba(0,212,255,.16), transparent 32%), linear-gradient(135deg,#F7F2FF,#ECF9FF 62%,#FFF6FA); }
.inner-hero-grid { display: grid; grid-template-columns: 1.12fr .88fr; gap: 50px; align-items: center; }
.inner-hero h1 { font-size: clamp(38px,5vw,64px); }
.inner-hero p { color: var(--muted); font-size: 17px; }
.inner-hero img { max-height: 470px; object-fit: contain; margin: auto; filter: drop-shadow(0 24px 38px rgba(34,47,92,.18)); }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font-size: 13px; color: var(--muted); margin-bottom: 12px; }
.breadcrumb a { color: var(--brand); text-decoration: none; }
.prose { max-width: 920px; }
.prose h2 { font-size: 32px; margin-top: 42px; margin-bottom: 14px; }
.prose h3 { font-size: 23px; margin-top: 30px; margin-bottom: 10px; }
.prose p { color: var(--muted); margin: 0 0 16px; }
.prose ul, .prose ol { color: var(--muted); padding-left: 1.4em; }
.prose li { margin-bottom: 8px; }
.article-layout { display: grid; grid-template-columns: minmax(0,1fr) 310px; gap: 38px; align-items: start; }
.sidebar { position: sticky; top: 98px; display: grid; gap: 18px; }
.sidebar-card { padding: 22px; border-radius: 22px; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); }
.sidebar-card h2, .sidebar-card h3 { font-size: 20px; margin-bottom: 12px; }
.sidebar-card a { display: block; padding: 8px 0; color: var(--brand); text-decoration: none; border-bottom: 1px dashed rgba(91,108,255,.16); }
.sidebar-card a:last-child { border-bottom: 0; }
.steps { counter-reset: steps; display: grid; gap: 16px; }
.step { counter-increment: steps; position: relative; padding: 22px 22px 22px 76px; border-radius: 20px; background: #fff; border: 1px solid var(--line); }
.step::before { content: counter(steps, decimal-leading-zero); position: absolute; left: 20px; top: 20px; display: grid; place-items: center; width: 42px; height: 42px; border-radius: 14px; background: linear-gradient(135deg,var(--brand),var(--brand-2)); color: #fff; font-weight: 900; }
.step h3 { margin: 0 0 6px; font-size: 19px; }
.step p { margin: 0; color: var(--muted); }
.quote { padding: 24px; border-left: 4px solid var(--brand); border-radius: 0 20px 20px 0; background: #EFF2FF; color: var(--title); }
.quote p { margin: 0 0 10px; color: var(--title); }
.quote cite { color: var(--muted); font-style: normal; font-size: 14px; }
.cta-panel { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 34px; border-radius: 28px; background: linear-gradient(135deg,#5B6CFF,#7A5CFF 54%,#00B8E7); color: #fff; box-shadow: 0 24px 50px rgba(91,108,255,.24); }
.cta-panel h2 { color: #fff; margin-bottom: 6px; }
.cta-panel p { margin: 0; color: #EAF0FF; }
.cta-panel .ghost-btn { background: #fff; color: var(--brand); border: 0; white-space: nowrap; }
.site-footer { background: #0B1024; color: #EEF2FF; padding: 64px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.7fr repeat(3,1fr); gap: 42px; }
.footer-grid h2 { color: #fff; font-size: 16px; margin-bottom: 14px; }
.footer-grid a { display: block; width: fit-content; color: #C7D0E7; text-decoration: none; margin: 8px 0; font-size: 14px; }
.footer-grid a:hover { color: #fff; }
.footer-brand p { color: #AEB8D0; max-width: 430px; font-size: 14px; }
.footer-logo { margin-bottom: 16px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid rgba(255,255,255,.1); margin-top: 40px; padding-top: 22px; color: #8F9AB3; font-size: 13px; }
.footer-bottom p { margin: 0; }
.footer-bottom div { display: flex; gap: 16px; }
.footer-bottom a { color: #B9C3DA; text-decoration: none; }
.mobile-bottom-nav { display: none; }
@media (max-width: 1080px) {
  .nav-core { display: none; }
  .hero-grid, .inner-hero-grid { gap: 34px; }
  .highlights { grid-template-columns: 1fr 1fr; }
  .highlight-item:nth-child(2) { border-right: 0; }
  .highlight-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .four-col { grid-template-columns: 1fr 1fr; }
  .reviews { grid-template-columns: 1fr 1fr; }
  .article-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; grid-template-columns: 1fr 1fr; }
}
@media (max-width: 820px) {
  .header-inner { min-height: 66px; width: min(calc(100% - 24px),1280px); }
  .mobile-menu-button { display: grid; order: 0; }
  .desktop-menu-button { display: none; }
  .site-logo { position: absolute; left: 50%; transform: translateX(-50%); }
  .site-logo strong { display: none; }
  .header-actions { margin-left: auto; }
  .header-cta { min-height: 40px; padding: 0 15px; font-size: 13px; }
  .hero { padding: 56px 0 52px; }
  .hero-grid, .inner-hero-grid, .split, .security-panel { grid-template-columns: 1fr; }
  .hero-copy { font-size: 16px; }
  .hero-visual { max-width: 620px; margin: 0 auto; }
  .floating-note { right: 0; }
  .split.reverse .media { order: 0; }
  .three-col { grid-template-columns: 1fr; }
  .section { padding: 66px 0; }
  .security-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-grid > div:last-child { grid-column: 2 / 4; }
  .mobile-bottom-nav { position: fixed; left: 12px; right: 12px; bottom: max(10px, env(safe-area-inset-bottom)); z-index: 9000; display: grid; grid-template-columns: repeat(4,1fr); padding: 8px; border-radius: 22px; background: rgba(11,16,36,.94); backdrop-filter: blur(14px); box-shadow: 0 18px 44px rgba(11,16,36,.3); }
  .mobile-bottom-nav a { display: grid; place-items: center; gap: 2px; color: #AEB8D0; text-decoration: none; font-size: 11px; border-radius: 14px; padding: 5px; }
  .mobile-bottom-nav a span { font-size: 18px; line-height: 1; }
  .mobile-bottom-nav a.active { color: #fff; background: rgba(91,108,255,.34); }
  body { padding-bottom: 88px; }
}
@media (max-width: 620px) {
  .container { width: min(calc(100% - 28px), var(--container)); }
  h1 { font-size: 42px; }
  .hero-subtitle { font-size: 22px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions a { width: 100%; }
  .hero-points { display: grid; }
  .floating-note { position: relative; margin: -8px 8px 0 auto; }
  .highlights { grid-template-columns: 1fr; margin-top: 18px; }
  .highlight-item, .highlight-item:nth-child(2) { border-right: 0; border-bottom: 1px solid var(--line); }
  .highlight-item:last-child { border-bottom: 0; }
  .two-col, .four-col, .reviews, .security-grid, .sidebar { grid-template-columns: 1fr; }
  .section { padding: 54px 0; }
  .section-heading h2 { font-size: 32px; }
  .zone-card .zone-body, .service-card { padding: 22px; }
  .cta-panel { align-items: flex-start; flex-direction: column; padding: 26px; }
  .cta-panel .ghost-btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px 20px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-grid > div:last-child { grid-column: auto; }
  .footer-bottom { flex-direction: column; }
  .footer-bottom div { flex-wrap: wrap; }
  .site-drawer { width: 92vw; padding: 20px; }
}