:root {
  --bg: #E6EBF2;
  --surface: #FFFFFF;
  --surface-soft: #F5F7FB;
  --surface-alt: #EEF2F7;
  --surface-deep: #DDE4EE;
  --primary: #289CFF;
  --nav: #4E5F7A;
  --text: #243447;
  --muted: #66788A;
  --hint: #8A9AAF;
  --footer: #243447;
  --footer-text: #EAF3FF;
  --border: rgba(40,156,255,0.16);
  --shadow: 0 14px 36px rgba(56,92,138,0.12);
  --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, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.75;
  overflow-x: hidden;
}
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
.container { width: min(1200px, calc(100% - 40px)); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 20000; background: #fff; color: var(--primary); padding: 10px 14px; border-radius: 10px; }
.skip-link:focus { top: 14px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 9999;
  background: rgba(245,247,251,0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 24px rgba(56,92,138,0.10);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  min-height: var(--header-height);
}
.logo { flex: 0 0 auto; display: flex; align-items: center; min-width: 126px; }
.logo img { max-height: 50px; width: auto; }
.nav-wrap { flex: 1 1 auto; min-width: 0; display: flex; justify-content: center; }
.nav { display: flex; align-items: center; gap: 18px; white-space: nowrap; flex-wrap: nowrap; }
.nav > a, .nav-trigger {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-height: 46px;
  padding: 0;
  color: var(--nav);
  background: transparent;
  border: 0;
  font-size: 15px;
  font-weight: 650;
}
.nav > a::after, .nav-trigger::after {
  content: "";
  position: absolute;
  left: 10%; right: 10%; bottom: 3px;
  height: 2px;
  background: var(--primary);
  border-radius: 999px;
  transform: scaleX(0);
  transition: transform .2s ease;
}
.nav > a:hover, .nav > a.active, .nav-trigger:hover, .nav-trigger.active { color: var(--primary); }
.nav > a:hover::after, .nav > a.active::after, .nav-trigger:hover::after, .nav-trigger.active::after { transform: scaleX(1); }
.header-action { flex: 0 0 auto; display: flex; align-items: center; }
.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: #FFFFFF;
  box-shadow: 0 10px 24px rgba(36,155,255,0.25);
  font-weight: 800;
  transition: transform .2s ease, filter .2s ease, box-shadow .2s ease;
}
.main-btn:hover { background: linear-gradient(180deg, #48D9F7 0%, #1E90F0 100%); transform: translateY(-1px); box-shadow: 0 14px 28px rgba(36,155,255,0.3); }
.header-btn { min-width: 88px; }
.dropdown { position: relative; }
.dropdown-menu {
  position: absolute;
  top: calc(100% + 7px);
  left: -16px;
  min-width: 188px;
  padding: 8px;
  background: #FFFFFF;
  border: 1px solid rgba(40,156,255,0.12);
  border-radius: 14px;
  box-shadow: 0 18px 38px rgba(56,92,138,0.16);
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: .2s ease;
}
.dropdown-menu-right { left: auto; right: -14px; }
.dropdown:hover .dropdown-menu, .dropdown:focus-within .dropdown-menu, .dropdown.open .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-menu a { display: block; padding: 11px 14px; color: var(--nav); border-radius: 10px; white-space: nowrap; font-size: 14px; font-weight: 650; }
.dropdown-menu a:hover { color: var(--primary); background: rgba(40,156,255,0.08); }
.more-dropdown { display: none; }
.menu-toggle { display: none; width: 42px; height: 42px; border: 0; border-radius: 12px; background: #fff; box-shadow: 0 6px 18px rgba(56,92,138,.12); padding: 10px; }
.menu-toggle span { display: block; height: 2px; margin: 5px 0; background: var(--nav); border-radius: 999px; }

.mobile-drawer { position: fixed; inset: 0 auto 0 0; width: min(84vw, 320px); z-index: 12000; background: #F5F7FB; box-shadow: 24px 0 60px rgba(36,52,71,.22); transform: translateX(-105%); transition: transform .28s ease; overflow-y: auto; }
.mobile-drawer.open { transform: translateX(0); }
.drawer-overlay { position: fixed; inset: 0; z-index: 11000; background: rgba(36,52,71,.42); opacity: 0; transition: opacity .24s ease; }
.drawer-overlay.show { opacity: 1; }
.drawer-head { position: sticky; top: 0; display: flex; align-items: center; justify-content: space-between; padding: 18px; background: rgba(245,247,251,.96); border-bottom: 1px solid var(--border); }
.drawer-logo img { max-height: 48px; width: auto; }
.drawer-close { width: 40px; height: 40px; border: 0; border-radius: 12px; background: #fff; color: var(--nav); font-size: 28px; line-height: 1; }
.drawer-nav { padding: 12px 16px 28px; }
.drawer-nav a { display: block; padding: 13px 14px; color: var(--nav); border-radius: 12px; font-weight: 650; }
.drawer-nav a:hover { color: var(--primary); background: rgba(40,156,255,.08); }

main { min-height: 55vh; }
.section { padding: 64px 0; }
.section-tight { padding: 40px 0; }
.section-alt { background: rgba(245,247,251,.68); }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 26px; }
.section-head > div { max-width: 760px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--primary); font-size: 13px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 24px; height: 2px; background: var(--primary); border-radius: 999px; }
h1, h2, h3, .section-title { color: var(--primary); margin-top: 0; line-height: 1.32; }
h1 { font-size: clamp(34px, 5vw, 58px); margin-bottom: 18px; }
h2 { font-size: clamp(26px, 3.5vw, 38px); margin-bottom: 12px; }
h3 { font-size: 21px; margin-bottom: 10px; }
p { margin: 0 0 16px; color: var(--muted); }
.lead { font-size: clamp(17px, 2vw, 20px); color: var(--text); }
.text-link { color: var(--primary); font-weight: 800; }
.text-link:hover { text-decoration: underline; text-underline-offset: 4px; }

.page-hero { padding: 54px 0 34px; }
.page-hero-box { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(300px, .85fr); align-items: center; gap: 42px; padding: 46px; background: linear-gradient(135deg, rgba(255,255,255,.95), rgba(238,242,247,.9)); border: 1px solid var(--border); border-radius: 28px; box-shadow: var(--shadow); }
.page-hero-copy { max-width: 720px; }
.page-hero-media { background: #fff; border-radius: 22px; overflow: hidden; box-shadow: 0 16px 36px rgba(56,92,138,.13); }
.page-hero-media img { width: 100%; height: auto; object-fit: contain; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; margin-top: 24px; }
.notice-chip { display: inline-flex; align-items: center; padding: 7px 12px; border-radius: 999px; color: var(--primary); background: rgba(40,156,255,.09); font-weight: 750; font-size: 13px; }

.banner-slider { max-width: 1200px; margin: 28px auto 36px; border-radius: 22px; background: #FFFFFF; box-shadow: 0 18px 40px rgba(56,92,138,0.12); overflow: hidden; position: relative; }
.slider-viewport { position: relative; aspect-ratio: 16 / 6.4; min-height: 250px; background: #fff; }
.slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .55s ease; }
.slide.active { opacity: 1; visibility: visible; }
.banner-slider img { width: 100%; height: 100%; object-fit: contain; background: #FFFFFF; }
.slider-arrow { position: absolute; top: 50%; transform: translateY(-50%); z-index: 5; width: 46px; height: 46px; border: 1px solid rgba(255,255,255,.75); border-radius: 50%; background: rgba(36,52,71,.42); color: #fff; font-size: 27px; line-height: 1; backdrop-filter: blur(8px); }
.slider-arrow:hover { background: rgba(36,52,71,.65); }
.slider-arrow.prev { left: 18px; }
.slider-arrow.next { right: 18px; }
.slider-dots { position: absolute; left: 50%; bottom: 15px; transform: translateX(-50%); z-index: 5; display: flex; gap: 9px; }
.slider-dot { width: 10px; height: 10px; border: 0; border-radius: 50%; padding: 0; background: rgba(255,255,255,.72); box-shadow: 0 0 0 1px rgba(36,52,71,.15); }
.slider-dot.active { width: 26px; border-radius: 999px; background: var(--primary); }
.banner-caption, .banner-text, .slide-title, .slide-desc, .slide-content, .slide-card, .banner-card { display: none !important; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; align-items: center; }
.split.reverse .split-media { order: 2; }
.split-media { border-radius: 24px; overflow: hidden; background: #fff; box-shadow: var(--shadow); }
.split-media img, .content-img, .zone-card img, .app-section img { width: 100%; height: auto; object-fit: contain; }
.split-copy { padding: 12px 0; }

.card-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.card-grid.three { grid-template-columns: repeat(3, 1fr); }
.card-grid.two { grid-template-columns: repeat(2, 1fr); }
.card, .zone-card, .info-card, .review-card { background: rgba(255,255,255,0.92); border: 1px solid var(--border); box-shadow: 0 14px 36px rgba(56,92,138,0.10); border-radius: 18px; }
.card, .info-card, .review-card { padding: 24px; }
.card { transition: transform .2s ease, box-shadow .2s ease; }
.card:hover { transform: translateY(-4px); box-shadow: 0 20px 44px rgba(56,92,138,.14); }
.card-index { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; margin-bottom: 16px; border-radius: 12px; color: var(--primary); background: rgba(40,156,255,.09); font-weight: 900; }
.zone-card { overflow: hidden; }
.zone-card img { aspect-ratio: 16 / 9; background: #fff; }
.zone-body { padding: 22px; }

.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 22px; }
.feature-item { padding: 17px 18px; border-radius: 15px; background: rgba(255,255,255,.82); border: 1px solid var(--border); }
.feature-item strong { display: block; color: var(--primary); margin-bottom: 5px; }
.feature-item span { color: var(--muted); font-size: 14px; }

.steps { counter-reset: steps; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.step { position: relative; padding: 24px 22px 24px 66px; min-height: 150px; background: #fff; border: 1px solid var(--border); border-radius: 18px; box-shadow: 0 12px 30px rgba(56,92,138,.08); }
.step::before { counter-increment: steps; content: counter(steps, decimal-leading-zero); position: absolute; left: 20px; top: 22px; color: var(--primary); font-weight: 900; font-size: 18px; }
.step h3 { font-size: 18px; }

.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.review-card blockquote { margin: 0; color: var(--text); }
.review-card footer { margin-top: 16px; color: var(--hint); font-size: 14px; }

.faq-list { display: grid; gap: 14px; }
.faq-item { background: rgba(255,255,255,.94); border: 1px solid var(--border); border-radius: 16px; box-shadow: 0 10px 28px rgba(56,92,138,.08); overflow: hidden; }
.faq-item summary { list-style: none; cursor: pointer; padding: 20px 54px 20px 22px; color: var(--text); font-weight: 800; position: relative; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 22px; top: 50%; transform: translateY(-50%); color: var(--primary); font-size: 24px; }
.faq-item[open] summary::after { content: "−"; }
.faq-answer { padding: 0 22px 20px; }
.faq-answer p { margin: 0; }

.notice-panel { padding: 26px; border-radius: 20px; background: linear-gradient(135deg, rgba(221,228,238,.9), rgba(255,255,255,.92)); border: 1px solid var(--border); }
.notice-panel ul { margin: 14px 0 0; padding-left: 20px; color: var(--muted); }
.notice-panel li + li { margin-top: 8px; }

.compliance-strip { padding: 32px 0; background: #DDE4EE; border-top: 1px solid rgba(40,156,255,.12); }
.compliance-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.compliance-grid div { padding: 18px; border-radius: 16px; background: rgba(255,255,255,.68); }
.compliance-grid strong { display: block; color: var(--primary); margin-bottom: 6px; }
.compliance-grid span { color: var(--muted); font-size: 14px; }

.site-footer { background: var(--footer); color: var(--footer-text); padding: 54px 0 22px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 42px; }
.footer-brand img { max-height: 52px; width: auto; margin-bottom: 18px; filter: brightness(1.08); }
.site-footer h2 { color: #fff; font-size: 17px; margin-bottom: 16px; }
.site-footer p { color: #C7D6E8; max-width: 420px; }
.site-footer a { display: block; color: #DCE8F6; margin: 9px 0; font-size: 14px; }
.site-footer a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 24px; padding-top: 26px; margin-top: 36px; border-top: 1px solid rgba(234,243,255,.14); color: #AFC1D5; font-size: 13px; }

@media (max-width: 1180px) {
  .nav-optional { display: none !important; }
  .more-dropdown { display: block; }
  .nav { gap: 16px; }
}
@media (max-width: 980px) {
  :root { --header-height: 68px; }
  .container { width: min(100% - 28px, 1200px); }
  .header-inner { gap: 12px; }
  .nav-wrap { display: none; }
  .menu-toggle { display: block; flex: 0 0 auto; }
  .logo { min-width: 0; position: absolute; left: 50%; transform: translateX(-50%); }
  .logo img { max-height: 44px; }
  .header-btn { min-width: 76px; padding-inline: 18px; min-height: 40px; }
  .page-hero-box, .split { grid-template-columns: 1fr; }
  .page-hero-media { max-width: 680px; }
  .card-grid, .card-grid.three { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .review-grid { grid-template-columns: repeat(2, 1fr); }
  .compliance-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
  .container { width: min(100% - 22px, 1200px); }
  .section { padding: 46px 0; }
  .section-tight { padding: 30px 0; }
  .section-head { align-items: start; flex-direction: column; margin-bottom: 20px; }
  .page-hero { padding: 28px 0 24px; }
  .page-hero-box { padding: 26px 22px; border-radius: 22px; gap: 24px; }
  h1 { font-size: 34px; }
  h2 { font-size: 27px; }
  .slider-viewport { aspect-ratio: 16 / 8.7; min-height: 190px; }
  .banner-slider { margin: 18px 11px 28px; border-radius: 16px; }
  .slider-arrow { width: 40px; height: 40px; font-size: 23px; }
  .slider-arrow.prev { left: 10px; }
  .slider-arrow.next { right: 10px; }
  .card-grid, .card-grid.three, .card-grid.two, .feature-list, .steps, .review-grid, .compliance-grid, .footer-grid { grid-template-columns: 1fr; }
  .split.reverse .split-media { order: 0; }
  .step { min-height: 0; }
  .footer-bottom { flex-direction: column; }
  .site-footer { padding-top: 42px; }
}