:root {
  --bg: #E6EBF2;
  --bg-soft: #F5F7FB;
  --surface: #FFFFFF;
  --surface-alt: #EEF2F7;
  --line: rgba(40, 156, 255, .16);
  --primary: #289CFF;
  --primary-deep: #0878df;
  --text: #243447;
  --muted: #66788A;
  --footer: #243447;
  --shadow: 0 14px 36px rgba(56, 92, 138, .10);
  --radius: 20px;
  --header-height: 76px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, sans-serif; line-height: 1.75; overflow-x: hidden; }
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 20000; background: #fff; color: var(--primary); padding: 10px 16px; border-radius: 10px; box-shadow: var(--shadow); }
.skip-link:focus { top: 12px; }
.container { width: min(1200px, calc(100% - 40px)); margin-inline: auto; }
.site-header { position: fixed; inset: 0 0 auto; z-index: 500; background: rgba(245,247,251,.94); backdrop-filter: blur(10px); box-shadow: 0 8px 24px rgba(56,92,138,.10); border-bottom: 1px solid rgba(255,255,255,.7); }
.header-inner { width: min(1380px, calc(100% - 36px)); min-height: var(--header-height); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.logo { flex: 0 0 auto; }
.logo img { max-height: 52px; width: auto; }
.nav-core { display: flex; justify-content: center; gap: 24px; white-space: nowrap; flex-wrap: nowrap; }
.nav-core a { color: #4E5F7A; position: relative; font-weight: 700; padding: 10px 8px; border-radius: 10px; }
.nav-core a:hover, .nav-core a.active { color: var(--primary); background: rgba(40,156,255,.06); }
.nav-core a.active::after { content: ""; position: absolute; left: 50%; bottom: -5px; width: 28px; height: 3px; border-radius: 999px; background: var(--primary); transform: translateX(-50%); }
.main-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 24px; border: 0; border-radius: 999px; background: linear-gradient(180deg, #32D1F6 0%, #27B9F4 35%, #249BFF 100%); color: #fff; font-weight: 800; box-shadow: 0 10px 22px rgba(36,155,255,.24); transition: transform .2s ease, box-shadow .2s ease; }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(36,155,255,.30); }
.header-register { flex: 0 0 auto; min-width: 92px; }
.mobile-menu-btn { display: none; width: 44px; height: 44px; border: 0; border-radius: 12px; background: #fff; padding: 11px; box-shadow: 0 8px 18px rgba(56,92,138,.10); }
.mobile-menu-btn span { display: block; height: 2px; margin: 5px 0; border-radius: 3px; background: var(--primary); }
.site-shell { width: min(1420px, calc(100% - 40px)); margin: 0 auto; padding: calc(var(--header-height) + 28px) 90px 56px 0; display: grid; grid-template-columns: 190px minmax(0,1fr); gap: 28px; }
.site-main { min-width: 0; }
.side-channel { position: sticky; top: 104px; align-self: start; max-height: calc(100vh - 126px); overflow: auto; padding: 16px; background: rgba(255,255,255,.92); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); }
.side-channel-title { margin: 2px 8px 10px; color: var(--text); font-weight: 800; }
.side-channel nav { display: grid; gap: 4px; }
.side-channel a { display: block; color: var(--muted); border-radius: 12px; padding: 8px 10px; font-size: 14px; }
.side-channel a:hover, .side-channel a.active { color: var(--primary); background: rgba(40,156,255,.10); font-weight: 700; }
.floating-service { position: fixed; right: 18px; top: 42%; z-index: 60; display: grid; gap: 8px; width: 66px; }
.floating-service a, .floating-service button { min-height: 48px; display: grid; place-items: center; border-radius: 14px; background: #fff; color: var(--primary); border: 1px solid var(--line); box-shadow: 0 14px 30px rgba(56,92,138,.12); font-weight: 800; }
.floating-service button { width: 100%; }
.floating-service a.register-link { background: linear-gradient(180deg, #32D1F6 0%, #27B9F4 35%, #249BFF 100%); color: #fff; }
.mobile-drawer { position: fixed; z-index: 10000; top: 0; bottom: 0; left: 0; width: min(84vw, 320px); padding: 18px; background: #fff; box-shadow: 18px 0 42px rgba(31,57,84,.24); transform: translateX(-105%); transition: transform .28s ease; overflow-y: auto; }
.mobile-drawer.open { transform: translateX(0); }
.drawer-overlay { position: fixed; z-index: 9999; inset: 0; background: rgba(22,37,56,.46); opacity: 0; transition: opacity .2s ease; }
.drawer-overlay.show { opacity: 1; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-bottom: 14px; border-bottom: 1px solid #e6edf5; }
.drawer-logo img { max-height: 46px; width: auto; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 12px; background: var(--bg-soft); color: var(--primary); font-size: 28px; line-height: 1; }
.drawer-nav { display: grid; gap: 5px; padding: 16px 0; }
.drawer-nav a { padding: 10px 12px; border-radius: 12px; color: var(--muted); }
.drawer-nav a:hover, .drawer-nav a.active { color: var(--primary); background: rgba(40,156,255,.10); font-weight: 700; }
.drawer-notice { padding: 14px; border-radius: 14px; background: var(--bg-soft); color: var(--muted); font-size: 13px; }
.mobile-bottom-nav { display: none; }
.banner-slider { width: 100%; margin: 0 auto 36px; border-radius: 22px; background: #fff; box-shadow: 0 18px 40px rgba(56,92,138,.12); overflow: hidden; position: relative; z-index: 1; aspect-ratio: 3 / 1; min-height: 300px; max-height: 400px; }
.banner-slider .slide { display: none; width: 100%; height: 100%; }
.banner-slider .slide.active { display: block; }
.banner-slider img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.banner-caption, .banner-text, .slide-title, .slide-desc, .slide-content, .slide-card, .banner-card { display: none !important; }
.slider-arrow { position: absolute; top: 50%; transform: translateY(-50%); z-index: 3; width: 46px; height: 46px; border: 0; border-radius: 999px; background: rgba(255,255,255,.88); color: var(--primary); box-shadow: 0 8px 20px rgba(56,92,138,.16); font-size: 28px; }
.slider-arrow.prev { left: 16px; }
.slider-arrow.next { right: 16px; }
.slider-dots { position: absolute; left: 50%; bottom: 14px; transform: translateX(-50%); display: flex; gap: 8px; z-index: 3; }
.slider-dots button { width: 10px; height: 10px; padding: 0; border-radius: 50%; border: 0; background: rgba(40,156,255,.24); box-shadow: 0 0 0 4px rgba(255,255,255,.5); }
.slider-dots button.active { background: var(--primary); }
.page-hero, .section, .card, .zone-card, .info-card, .review-card { background: rgba(255,255,255,.92); border: 1px solid var(--line); box-shadow: var(--shadow); }
.page-hero { display: grid; grid-template-columns: minmax(0,1.35fr) minmax(260px,.65fr); gap: 30px; align-items: center; padding: 38px; border-radius: 24px; margin-bottom: 28px; overflow: hidden; }
.page-hero.no-image { grid-template-columns: 1fr; }
.eyebrow { display: inline-flex; padding: 5px 12px; border-radius: 999px; background: rgba(40,156,255,.10); color: var(--primary); font-weight: 800; font-size: 14px; }
h1, h2, h3, .section-title { color: var(--primary); line-height: 1.3; }
h1 { margin: 14px 0 16px; font-size: clamp(30px, 4vw, 52px); letter-spacing: -.02em; }
h2 { font-size: clamp(24px, 3vw, 34px); }
h3 { font-size: 20px; }
p { margin: 0 0 14px; }
.lead { color: var(--muted); font-size: 18px; max-width: 780px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.text-link { color: var(--primary); font-weight: 800; }
.hero-image { min-height: 250px; display: grid; place-items: center; border-radius: 20px; background: var(--bg-soft); overflow: hidden; }
.hero-image img { width: 100%; max-height: 320px; object-fit: contain; }
.section { padding: 34px; border-radius: var(--radius); margin: 0 0 28px; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 18px; margin-bottom: 22px; }
.section-head h2 { margin: 0; }
.section-head p { max-width: 720px; margin: 0; color: var(--muted); }
.grid-2, .grid-3, .grid-4, .grid-5 { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
.grid-5 { grid-template-columns: repeat(5, minmax(0,1fr)); }
.card, .zone-card, .info-card, .review-card { border-radius: 18px; padding: 24px; }
.card h3, .zone-card h3, .info-card h3, .review-card h3 { margin: 0 0 10px; }
.card p, .zone-card p, .info-card p, .review-card p { color: var(--muted); }
.card .text-link { display: inline-flex; margin-top: 8px; }
.quick-links { display: grid; grid-template-columns: repeat(5, minmax(0,1fr)); gap: 12px; }
.quick-link { padding: 18px; border-radius: 16px; background: #fff; border: 1px solid var(--line); box-shadow: 0 9px 22px rgba(56,92,138,.08); }
.quick-link strong { display: block; color: var(--primary); margin-bottom: 5px; }
.quick-link span { display: block; color: var(--muted); font-size: 14px; line-height: 1.55; }
.quick-link em { display: block; margin-top: 8px; color: var(--primary); font-style: normal; font-weight: 700; }
.media-card { display: grid; grid-template-columns: minmax(0,.85fr) minmax(0,1.15fr); gap: 24px; align-items: center; }
.media-card.reverse { grid-template-columns: minmax(0,1.15fr) minmax(0,.85fr); }
.media-card.reverse .media-image { order: 2; }
.media-image { min-height: 220px; display: grid; place-items: center; padding: 12px; border-radius: 18px; background: var(--bg-soft); overflow: hidden; }
.media-image img, .content-img, .zone-card img, .app-section img { max-width: 100%; max-height: 300px; width: 100%; height: auto; object-fit: contain; }
.product-matrix { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px; }
.product-item { padding: 22px; border-radius: 18px; background: linear-gradient(145deg,#fff,#f2f7fc); border: 1px solid var(--line); }
.product-item h3 { margin-top: 0; }
.product-item p { color: var(--muted); }
.feature-list { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 10px; }
.feature-list li { position: relative; padding-left: 22px; color: var(--muted); }
.feature-list li::before { content: ""; position: absolute; left: 0; top: .75em; width: 8px; height: 8px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 0 4px rgba(40,156,255,.12); }
.review-card { position: relative; padding-top: 40px; }
.review-card::before { content: "“"; position: absolute; top: 6px; left: 20px; color: rgba(40,156,255,.28); font-size: 52px; font-weight: 900; line-height: 1; }
.review-card strong { color: var(--text); }
.faq-list { display: grid; gap: 12px; }
.faq-item { border-radius: 16px; background: #fff; border: 1px solid var(--line); overflow: hidden; }
.faq-item button { width: 100%; min-height: 58px; padding: 14px 18px; display: flex; align-items: center; justify-content: space-between; gap: 14px; border: 0; background: transparent; color: var(--text); text-align: left; font-weight: 800; }
.faq-item button::after { content: "+"; color: var(--primary); font-size: 24px; }
.faq-item.open button::after { content: "−"; }
.faq-answer { display: none; padding: 0 18px 18px; color: var(--muted); }
.faq-item.open .faq-answer { display: block; }
.notice-box { padding: 22px; border-radius: 18px; background: #f7fbff; border: 1px solid rgba(40,156,255,.22); color: var(--muted); }
.notice-box strong { display: block; color: var(--primary); margin-bottom: 6px; }
.compliance-strip { background: #dce7f1; border-top: 1px solid rgba(40,156,255,.15); }
.compliance-grid { padding: 22px 0; display: grid; grid-template-columns: 160px 1fr; gap: 24px; align-items: start; }
.compliance-grid strong { color: var(--primary); font-size: 18px; }
.compliance-grid p { margin: 0; color: #506477; }
.site-footer { background: var(--footer); color: #EAF3FF; }
.footer-grid { padding: 48px 0 34px; display: grid; grid-template-columns: 1.5fr repeat(3,1fr); gap: 34px; }
.footer-grid h2 { margin: 0 0 14px; color: #fff; font-size: 18px; }
.footer-grid a:not(.footer-brand a) { display: block; padding: 4px 0; color: #cfe2f7; }
.footer-grid a:hover { color: #fff; }
.footer-brand img { max-height: 52px; width: auto; margin-bottom: 16px; }
.footer-brand p { color: #cfe2f7; max-width: 390px; }
.footer-bottom { padding: 18px 0 26px; border-top: 1px solid rgba(255,255,255,.10); color: #bdd2e8; font-size: 14px; }
.split-highlight { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 22px; }
.stat-row { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; margin-top: 20px; }
.stat { padding: 18px; border-radius: 16px; background: var(--bg-soft); text-align: center; }
.stat strong { display: block; color: var(--primary); font-size: 24px; }
.stat span { color: var(--muted); font-size: 14px; }
.steps { counter-reset: steps; display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.step { counter-increment: steps; padding: 24px; border-radius: 18px; background: #fff; border: 1px solid var(--line); }
.step::before { content: counter(steps, decimal-leading-zero); display: inline-grid; place-items: center; width: 42px; height: 42px; margin-bottom: 14px; border-radius: 14px; background: rgba(40,156,255,.10); color: var(--primary); font-weight: 900; }
.step h3 { margin: 0 0 8px; }
.step p { color: var(--muted); }
@media (max-width: 1180px) {
  .site-shell { padding-right: 80px; grid-template-columns: 170px minmax(0,1fr); gap: 20px; }
  .quick-links { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .grid-4 { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 980px) {
  .nav-core, .side-channel, .floating-service { display: none; }
  .mobile-menu-btn { display: block; }
  .header-inner { gap: 12px; }
  .logo { position: absolute; left: 50%; transform: translateX(-50%); }
  .logo img { max-height: 46px; }
  .header-register { min-width: 78px; padding-inline: 18px; }
  .site-shell { width: min(100% - 28px, 980px); display: block; padding: calc(var(--header-height) + 20px) 0 40px; }
  .page-hero { grid-template-columns: 1fr; }
  .hero-image { min-height: 220px; }
  .banner-slider { min-height: 230px; max-height: 320px; }
  .grid-3 { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .grid-5 { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .product-matrix { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .footer-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 720px) {
  :root { --header-height: 68px; }
  body { padding-bottom: 70px; }
  .header-inner { width: calc(100% - 24px); min-height: var(--header-height); }
  .logo img { max-height: 42px; max-width: 124px; }
  .site-shell { width: calc(100% - 20px); padding-top: calc(var(--header-height) + 14px); }
  .banner-slider { margin-bottom: 20px; min-height: 170px; max-height: 230px; border-radius: 16px; aspect-ratio: 16 / 7; }
  .slider-arrow { width: 38px; height: 38px; font-size: 22px; }
  .slider-arrow.prev { left: 8px; }
  .slider-arrow.next { right: 8px; }
  .page-hero, .section { padding: 22px; border-radius: 18px; margin-bottom: 18px; }
  .lead { font-size: 16px; }
  .hero-image { min-height: 180px; }
  .hero-image img { max-height: 240px; }
  .grid-2, .grid-3, .grid-4, .grid-5, .split-highlight, .product-matrix, .steps { grid-template-columns: 1fr; }
  .quick-links { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 10px; }
  .quick-link { padding: 15px; }
  .media-card, .media-card.reverse { grid-template-columns: 1fr; }
  .media-card.reverse .media-image { order: 0; }
  .media-image { min-height: 170px; }
  .section-head { display: block; }
  .section-head p { margin-top: 8px; }
  .stat-row { grid-template-columns: 1fr; }
  .compliance-grid { grid-template-columns: 1fr; gap: 8px; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; padding-top: 36px; }
  .mobile-bottom-nav { position: fixed; z-index: 450; left: 10px; right: 10px; bottom: 8px; min-height: 58px; display: grid; grid-template-columns: repeat(4,1fr); align-items: center; padding: 6px; border-radius: 18px; background: rgba(255,255,255,.96); border: 1px solid var(--line); box-shadow: 0 15px 38px rgba(31,57,84,.22); backdrop-filter: blur(12px); }
  .mobile-bottom-nav a { display: grid; place-items: center; min-height: 44px; border-radius: 12px; color: var(--muted); font-weight: 700; font-size: 14px; }
  .mobile-bottom-nav a.active { background: rgba(40,156,255,.11); color: var(--primary); }
}
@media (max-width: 390px) {
  .quick-links { grid-template-columns: 1fr; }
  .header-register { min-width: 70px; padding-inline: 14px; }
  h1 { font-size: 30px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}