:root {
  --bg: #E6EBF2;
  --surface: #FFFFFF;
  --surface-soft: #F5F7FB;
  --surface-muted: #EEF2F7;
  --surface-deep: #DDE4EE;
  --primary: #289CFF;
  --primary-dark: #1E90F0;
  --nav: #4E5F7A;
  --text: #243447;
  --muted: #66788A;
  --hint: #8A9AAF;
  --border: rgba(40,156,255,.16);
  --shadow: 0 14px 36px rgba(56,92,138,.12);
  --radius: 22px;
  --header-height: 74px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  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;
  -webkit-font-smoothing: antialiased;
}
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; }
button { color: inherit; }
.skip-link { position: fixed; left: 16px; top: -70px; z-index: 20000; background: #fff; color: var(--primary); padding: 10px 16px; border-radius: 10px; transition: top .2s; }
.skip-link:focus { top: 12px; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 9999;
  background: rgba(245,247,251,.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(40,156,255,.10);
  box-shadow: 0 8px 24px rgba(56,92,138,.10);
}
.header-inner {
  width: min(1200px, calc(100% - 32px));
  min-height: var(--header-height);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}
.brand-logo { flex: 0 0 auto; display: flex; align-items: center; min-width: 126px; }
.brand-logo img { width: auto; max-width: 150px; max-height: 52px; object-fit: contain; }
.nav-wrap { flex: 1 1 auto; min-width: 0; display: flex; justify-content: center; }
.desktop-nav { display: flex; align-items: center; gap: 17px; white-space: nowrap; flex-wrap: nowrap; }
.nav-link { position: relative; border: 0; background: transparent; padding: 24px 2px 21px; color: var(--nav); font-size: 15px; cursor: pointer; transition: color .2s ease; }
.nav-link::after { content: ""; position: absolute; left: 50%; right: 50%; bottom: 13px; height: 2px; border-radius: 2px; background: var(--primary); transition: left .2s ease, right .2s ease; }
.nav-link:hover, .nav-link:focus-visible, .nav-link.active { color: var(--primary); }
.nav-link:hover::after, .nav-link:focus-visible::after, .nav-link.active::after { left: 0; right: 0; }
.header-action { flex: 0 0 auto; display: flex; align-items: center; }
.main-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 26px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(180deg, #32D1F6 0%, #27B9F4 35%, #249BFF 100%);
  color: #fff;
  font-weight: 700;
  box-shadow: 0 10px 24px rgba(36,155,255,.25);
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.main-btn:hover, .main-btn:focus-visible { background: linear-gradient(180deg, #48D9F7 0%, #1E90F0 100%); transform: translateY(-1px); box-shadow: 0 13px 28px rgba(36,155,255,.30); }
.compact-btn { min-height: 42px; padding: 0 23px; }
.dropdown { position: relative; }
.dropdown-menu {
  position: absolute;
  top: calc(100% - 8px);
  left: 50%;
  min-width: 188px;
  padding: 8px;
  background: #fff;
  border: 1px solid rgba(40,156,255,.12);
  border-radius: 14px;
  box-shadow: 0 18px 38px rgba(56,92,138,.16);
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 8px);
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
}
.dropdown:hover .dropdown-menu, .dropdown:focus-within .dropdown-menu, .dropdown.open .dropdown-menu { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.dropdown-menu a { display: block; padding: 10px 13px; border-radius: 9px; color: var(--nav); white-space: nowrap; }
.dropdown-menu a:hover, .dropdown-menu a:focus-visible { color: var(--primary); background: rgba(40,156,255,.08); }
.mobile-menu-btn { display: none; width: 42px; height: 42px; padding: 10px; border: 1px solid var(--border); border-radius: 12px; background: #fff; cursor: pointer; }
.mobile-menu-btn span { display: block; height: 2px; margin: 5px 0; border-radius: 2px; background: var(--nav); }
.drawer-overlay { position: fixed; inset: 0; z-index: 11000; background: rgba(21,39,63,.45); opacity: 0; visibility: hidden; transition: opacity .25s, visibility .25s; }
.mobile-drawer { position: fixed; inset: 0 auto 0 0; z-index: 11001; width: min(84vw, 320px); padding: 18px; overflow-y: auto; background: #fff; box-shadow: 24px 0 48px rgba(36,52,71,.2); transform: translateX(-104%); transition: transform .28s ease; }
.drawer-open .drawer-overlay { opacity: 1; visibility: visible; }
.drawer-open .mobile-drawer { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 15px; border-bottom: 1px solid rgba(40,156,255,.12); }
.drawer-logo img { width: auto; max-width: 142px; max-height: 48px; object-fit: contain; }
.drawer-close { width: 40px; height: 40px; border: 0; border-radius: 12px; background: var(--surface-muted); color: var(--nav); font-size: 28px; line-height: 1; cursor: pointer; }
.drawer-nav { display: grid; gap: 5px; padding-top: 13px; }
.drawer-nav a { padding: 11px 13px; border-radius: 10px; color: var(--nav); font-weight: 600; }
.drawer-nav a:hover, .drawer-nav a:focus-visible { color: var(--primary); background: rgba(40,156,255,.08); }
main { min-height: 60vh; }
.container { width: min(1200px, calc(100% - 32px)); margin: 0 auto; }
.section { padding: 74px 0; }
.section-sm { padding: 52px 0; }
.section-soft { background: var(--surface-soft); }
.section-muted { background: var(--surface-muted); }
.section-heading { max-width: 780px; margin: 0 auto 34px; text-align: center; }
.eyebrow { display: inline-flex; margin-bottom: 10px; color: var(--primary); font-size: 14px; font-weight: 800; letter-spacing: .08em; }
h1, h2, h3, .section-title { margin-top: 0; color: var(--primary); line-height: 1.3; }
h1 { margin-bottom: 18px; font-size: clamp(32px, 5vw, 52px); }
h2 { margin-bottom: 15px; font-size: clamp(26px, 3.2vw, 38px); }
h3 { margin-bottom: 10px; font-size: 20px; }
p { margin: 0 0 16px; }
.lead { color: var(--muted); font-size: clamp(17px, 2vw, 20px); }
.text-link { display: inline-flex; align-items: center; gap: 5px; color: var(--primary); font-weight: 700; }
.text-link::after { content: "→"; transition: transform .2s; }
.text-link:hover::after { transform: translateX(4px); }
.card, .zone-card, .info-card, .review-card {
  background: rgba(255,255,255,.92);
  border: 1px solid var(--border);
  box-shadow: 0 14px 36px rgba(56,92,138,.10);
  border-radius: var(--radius);
}
.card { padding: 25px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 20px; }
.banner-slider {
  width: min(1200px, calc(100% - 32px));
  aspect-ratio: 16 / 5.3;
  margin: 28px auto 36px;
  overflow: hidden;
  position: relative;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 18px 40px rgba(56,92,138,.12);
  isolation: isolate;
}
.slides { width: 100%; height: 100%; position: relative; }
.slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .55s ease, visibility .55s; }
.slide.active { opacity: 1; visibility: visible; }
.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%; z-index: 5; width: 46px; height: 46px; margin-top: -23px; border: 1px solid rgba(255,255,255,.55); border-radius: 50%; background: rgba(36,52,71,.46); color: #fff; font-size: 28px; line-height: 1; cursor: pointer; backdrop-filter: blur(4px); transition: transform .2s, background .2s; }
.slider-arrow:hover { background: rgba(36,52,71,.68); transform: scale(1.04); }
.slider-prev { left: 18px; }
.slider-next { right: 18px; }
.slider-dots { position: absolute; left: 50%; bottom: 16px; z-index: 5; display: flex; gap: 8px; transform: translateX(-50%); }
.slider-dot { width: 10px; height: 10px; padding: 0; border: 1px solid rgba(255,255,255,.85); border-radius: 50%; background: rgba(255,255,255,.45); cursor: pointer; }
.slider-dot.active { width: 26px; border-radius: 999px; background: #fff; }
.welcome-panel { display: grid; grid-template-columns: minmax(0,1.25fr) minmax(280px,.75fr); gap: 28px; align-items: stretch; }
.welcome-copy { padding: 38px; }
.welcome-aside { padding: 30px; background: linear-gradient(145deg, rgba(40,156,255,.11), rgba(50,209,246,.06)); }
.welcome-aside ul { margin: 0; padding-left: 20px; color: var(--muted); }
.welcome-actions { display: flex; gap: 14px; align-items: center; margin-top: 24px; }
.entry-card { min-height: 188px; padding: 24px; display: flex; flex-direction: column; }
.entry-card p { color: var(--muted); }
.entry-card .text-link { margin-top: auto; }
.media-split { display: grid; grid-template-columns: minmax(0,1fr) minmax(360px,.88fr); gap: 34px; align-items: center; }
.media-split.reverse { grid-template-columns: minmax(360px,.88fr) minmax(0,1fr); }
.media-split.reverse .media-box { order: -1; }
.media-box { overflow: hidden; padding: 12px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.content-img, .zone-card img, .app-section img { width: 100%; height: auto; max-height: 480px; object-fit: contain; border-radius: 15px; background: #fff; }
.feature-list { display: grid; gap: 14px; margin-top: 24px; }
.feature-item { padding: 17px 19px; border-left: 3px solid var(--primary); border-radius: 0 14px 14px 0; background: rgba(255,255,255,.72); }
.feature-item strong { display: block; margin-bottom: 4px; color: var(--primary); }
.product-card { overflow: hidden; }
.product-card img { width: 100%; aspect-ratio: 16/10; object-fit: contain; background: #fff; border-bottom: 1px solid var(--border); }
.product-card .card-body { padding: 22px; }
.product-card p { color: var(--muted); }
.notice-list { display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; }
.notice-list li { position: relative; padding: 16px 18px 16px 48px; border-radius: 15px; background: rgba(255,255,255,.82); border: 1px solid var(--border); }
.notice-list li::before { content: "✓"; position: absolute; left: 17px; top: 16px; width: 22px; height: 22px; display: grid; place-items: center; border-radius: 50%; background: rgba(40,156,255,.12); color: var(--primary); font-size: 13px; font-weight: 800; }
.review-card { padding: 24px; }
.review-card p { color: var(--muted); }
.review-card .review-label { margin-top: 15px; color: var(--primary); font-size: 14px; font-weight: 800; }
.faq-list { display: grid; gap: 13px; }
.faq-item { overflow: hidden; border-radius: 16px; background: rgba(255,255,255,.94); border: 1px solid var(--border); box-shadow: 0 8px 22px rgba(56,92,138,.06); }
.faq-item summary { cursor: pointer; list-style: none; padding: 19px 54px 19px 20px; position: relative; color: var(--text); font-weight: 800; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); color: var(--primary); font-size: 24px; }
.faq-item[open] summary::after { content: "−"; }
.faq-answer { padding: 0 20px 19px; color: var(--muted); }
.compliance-strip { padding: 26px; border-radius: var(--radius); background: #243447; color: #EAF3FF; box-shadow: var(--shadow); }
.compliance-strip h2 { color: #7BC8FF; font-size: 24px; }
.compliance-strip p:last-child { margin-bottom: 0; }
.inner-hero { padding: 52px 0 28px; }
.inner-hero-grid { display: grid; grid-template-columns: minmax(0,1.1fr) minmax(340px,.9fr); gap: 34px; align-items: center; }
.inner-hero-copy { padding: 34px 0; }
.inner-hero-copy .main-btn { margin-top: 10px; }
.page-image { padding: 12px; overflow: hidden; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.page-image img { width: 100%; max-height: 440px; object-fit: contain; border-radius: 15px; }
.prose-card { padding: 30px; }
.prose-card p { color: var(--muted); }
.point-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 18px; }
.point-card { padding: 23px; }
.point-card p { color: var(--muted); margin-bottom: 0; }
.steps { counter-reset: steps; display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px; }
.step-card { counter-increment: steps; position: relative; padding: 58px 23px 23px; }
.step-card::before { content: counter(steps, decimal-leading-zero); position: absolute; left: 23px; top: 18px; color: var(--primary); font-size: 22px; font-weight: 900; }
.step-card p { color: var(--muted); margin-bottom: 0; }
.tips-panel { padding: 28px; background: linear-gradient(140deg, rgba(255,255,255,.95), rgba(238,242,247,.96)); }
.site-footer { margin-top: 64px; background: #243447; color: #EAF3FF; }
.footer-inner { width: min(1200px, calc(100% - 32px)); margin: 0 auto; padding: 56px 0 38px; display: grid; grid-template-columns: 1.1fr 1.9fr; gap: 50px; }
.footer-brand img { width: auto; max-width: 160px; max-height: 54px; margin-bottom: 18px; object-fit: contain; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 500px; color: rgba(234,243,255,.76); }
.footer-links { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 24px; }
.footer-links h2 { margin-bottom: 14px; color: #fff; font-size: 17px; }
.footer-links a { display: block; padding: 4px 0; color: rgba(234,243,255,.75); }
.footer-links a:hover { color: #7BC8FF; }
.legal-notice { width: min(1200px, calc(100% - 32px)); margin: 0 auto; padding: 24px 0; border-top: 1px solid rgba(234,243,255,.12); color: rgba(234,243,255,.72); font-size: 14px; }
.legal-notice p:last-child { margin-bottom: 0; }
.footer-bottom { padding: 19px 16px; text-align: center; border-top: 1px solid rgba(234,243,255,.10); color: rgba(234,243,255,.58); font-size: 14px; }
@media (max-width: 1100px) {
  .desktop-nav { gap: 13px; }
  .nav-link { font-size: 14px; }
  .brand-logo { min-width: 116px; }
  .brand-logo img { max-width: 132px; }
}
@media (max-width: 1023px) {
  :root { --header-height: 66px; }
  .header-inner { width: min(100% - 24px, 760px); min-height: var(--header-height); display: grid; grid-template-columns: 44px 1fr auto; gap: 12px; }
  .mobile-menu-btn { display: block; }
  .nav-wrap { display: none; }
  .brand-logo { min-width: 0; justify-self: center; }
  .brand-logo img { max-width: 128px; max-height: 46px; }
  .compact-btn { min-height: 40px; padding: 0 18px; }
  .banner-slider { aspect-ratio: 16/6.6; margin-top: 20px; }
  .welcome-panel, .media-split, .media-split.reverse, .inner-hero-grid { grid-template-columns: 1fr; }
  .media-split.reverse .media-box { order: 0; }
  .grid-4 { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .grid-3 { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .steps { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .footer-inner { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .container, .banner-slider { width: min(100% - 24px, 560px); }
  .section { padding: 54px 0; }
  .section-sm { padding: 40px 0; }
  .banner-slider { aspect-ratio: 16/8.4; border-radius: 16px; }
  .slider-arrow { width: 38px; height: 38px; margin-top: -19px; font-size: 24px; }
  .slider-prev { left: 10px; }
  .slider-next { right: 10px; }
  .slider-dots { bottom: 10px; }
  .welcome-copy, .welcome-aside, .prose-card { padding: 24px; }
  .grid-2, .grid-3, .grid-4, .point-grid, .steps { grid-template-columns: 1fr; }
  .entry-card { min-height: auto; }
  .inner-hero { padding-top: 34px; }
  .inner-hero-copy { padding: 10px 0; }
  .footer-links { grid-template-columns: 1fr 1fr; }
  .footer-inner { padding-top: 44px; gap: 30px; }
}
@media (max-width: 420px) {
  .header-inner { width: calc(100% - 16px); gap: 8px; }
  .mobile-menu-btn { width: 40px; height: 40px; }
  .brand-logo img { max-width: 110px; }
  .compact-btn { padding: 0 15px; font-size: 14px; }
  .footer-links { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}