:root {
  --bg: #E6EBF2;
  --surface: #FFFFFF;
  --surface-soft: #F5F7FB;
  --surface-alt: #EEF2F7;
  --surface-deep: #DDE4EE;
  --primary: #289CFF;
  --primary-dark: #147BD1;
  --text: #243447;
  --muted: #66788A;
  --hint: #8A9AAF;
  --nav: #4E5F7A;
  --border: rgba(40,156,255,.16);
  --shadow: 0 14px 36px rgba(56,92,138,.12);
  --radius: 22px;
  --gradient: linear-gradient(180deg, #32D1F6 0%, #27B9F4 35%, #249BFF 100%);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: var(--bg); color: var(--text); font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif; line-height: 1.75; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }
.container { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.site-header { position: sticky; top: 0; z-index: 20000; background: rgba(245,247,251,.96); border-bottom: 1px solid rgba(78,95,122,.08); backdrop-filter: blur(16px); }
.header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
.logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.logo img { width: auto; max-width: 158px; max-height: 50px; object-fit: contain; }
.nav-wrap { flex: 1 1 auto; min-width: 0; display: flex; justify-content: center; }
.nav { display: flex; align-items: center; gap: clamp(12px, 1.5vw, 22px); white-space: nowrap; flex-wrap: nowrap; }
.nav-link { position: relative; display: inline-flex; align-items: center; gap: 5px; padding: 24px 0 21px; color: var(--nav); border: 0; background: transparent; cursor: pointer; font-size: 15px; font-weight: 700; }
.nav-link::after { content: ""; position: absolute; left: 0; right: 0; bottom: 14px; height: 2px; border-radius: 2px; background: var(--primary); transform: scaleX(0); transition: transform .2s ease; }
.nav-link:hover, .nav-link.active { color: var(--primary); }
.nav-link:hover::after, .nav-link.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-radius: 999px; background: var(--gradient); color: #fff; font-weight: 800; box-shadow: 0 10px 22px rgba(36,155,255,.25); transition: transform .2s ease, box-shadow .2s ease; }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(36,155,255,.3); }
.header-register { min-width: 86px; }
.dropdown { position: relative; }
.dropdown-menu { position: absolute; top: calc(100% - 8px); left: 50%; min-width: 188px; padding: 10px; 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: 30000; opacity: 0; visibility: hidden; transform: translate(-50%, 8px); transition: opacity .2s ease, transform .2s ease, visibility .2s; }
.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 14px; color: var(--nav); border-radius: 10px; line-height: 1.45; }
.dropdown-menu a:hover { color: var(--primary); background: rgba(40,156,255,.08); }
.menu-columns { min-width: 330px; display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); }
.mobile-menu-btn { display: none; width: 42px; height: 42px; border: 0; border-radius: 12px; background: #fff; box-shadow: 0 6px 16px rgba(56,92,138,.12); cursor: pointer; }
.mobile-menu-btn span { display: block; width: 20px; height: 2px; margin: 4px auto; background: var(--nav); border-radius: 2px; }
.mobile-drawer { position: fixed; inset: 0 auto 0 0; width: min(84vw,320px); padding: 18px; background: #fff; z-index: 40000; transform: translateX(-105%); transition: transform .28s ease; overflow-y: auto; }
.drawer-overlay { position: fixed; inset: 0; background: rgba(24,42,64,.44); z-index: 39000; opacity: 0; visibility: hidden; transition: opacity .25s ease, visibility .25s; }
.drawer-open .mobile-drawer { transform: translateX(0); }
.drawer-open .drawer-overlay { opacity: 1; visibility: visible; }
.drawer-open { overflow: hidden; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 14px; border-bottom: 1px solid rgba(78,95,122,.1); }
.drawer-logo img { max-width: 140px; max-height: 48px; object-fit: contain; }
.drawer-close { width: 40px; height: 40px; border: 0; border-radius: 12px; background: var(--surface-alt); color: var(--nav); font-size: 28px; cursor: pointer; }
.drawer-nav { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 8px; padding-top: 16px; }
.drawer-nav a { padding: 11px 12px; border-radius: 10px; color: var(--nav); background: var(--surface-soft); font-weight: 700; font-size: 14px; }
.drawer-nav a:hover { color: var(--primary); background: rgba(40,156,255,.1); }
main { min-height: 60vh; }
.banner-slider { position: relative; max-width: 1180px; margin: 28px auto 42px; overflow: hidden; border-radius: 24px; background: #fff; box-shadow: 0 18px 40px rgba(56,92,138,.12); z-index: 1; }
.slides { position: relative; aspect-ratio: 16/6.3; min-height: 320px; }
.slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .55s ease; }
.slide.active { opacity: 1; visibility: visible; }
.slide img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.slide-copy { position: absolute; left: clamp(24px,5vw,70px); top: 50%; width: min(470px,58%); transform: translateY(-50%); padding: 26px 30px; border-radius: 20px; background: rgba(245,247,251,.88); box-shadow: 0 14px 34px rgba(36,52,71,.12); backdrop-filter: blur(10px); }
.slide-copy h2 { margin: 0 0 10px; color: var(--primary); font-size: clamp(25px,3vw,42px); line-height: 1.22; }
.slide-copy p { margin: 0; color: var(--text); }
.slider-btn { position: absolute; top: 50%; z-index: 5; width: 46px; height: 46px; border: 0; border-radius: 50%; background: rgba(255,255,255,.9); color: var(--primary); box-shadow: 0 8px 20px rgba(56,92,138,.14); transform: translateY(-50%); cursor: pointer; font-size: 28px; }
.slider-btn.prev { left: 18px; }.slider-btn.next { right: 18px; }
.slider-dots { position: absolute; left: 50%; bottom: 18px; z-index: 5; display: flex; gap: 9px; transform: translateX(-50%); }
.slider-dot { width: 9px; height: 9px; padding: 0; border: 0; border-radius: 50%; background: rgba(78,95,122,.34); cursor: pointer; }
.slider-dot.active { width: 28px; border-radius: 999px; background: var(--primary); }
.section { padding: 62px 0; }
.section.compact { padding: 42px 0; }
.section-alt { background: rgba(245,247,251,.65); border-block: 1px solid rgba(40,156,255,.08); }
.section-head { max-width: 760px; margin-bottom: 28px; }
.section-kicker { display: inline-block; margin-bottom: 10px; color: var(--primary); font-size: 13px; font-weight: 900; letter-spacing: .12em; }
h1,h2,h3,.section-title { color: var(--primary); line-height: 1.3; }
h1 { margin: 0 0 18px; font-size: clamp(34px,5vw,58px); }
h2 { margin: 0 0 12px; font-size: clamp(25px,3vw,36px); }
h3 { margin: 0 0 8px; font-size: 19px; }
p { margin: 0 0 16px; }
.lead { color: var(--muted); font-size: 18px; }
.hero { padding: 68px 0 34px; }
.hero-grid { display: grid; grid-template-columns: minmax(0,1.08fr) minmax(320px,.92fr); gap: 38px; align-items: center; }
.hero-copy { padding: 18px 0; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.text-link { color: var(--primary); font-weight: 800; }
.text-link:hover { color: var(--primary-dark); }
.visual-card { padding: 16px; border-radius: var(--radius); background: rgba(255,255,255,.88); border: 1px solid var(--border); box-shadow: var(--shadow); }
.content-img { width: 100%; max-height: 440px; object-fit: contain; border-radius: 16px; background: #fff; }
.card-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; }
.card-grid.four { grid-template-columns: repeat(4,minmax(0,1fr)); }
.card-grid.two { grid-template-columns: repeat(2,minmax(0,1fr)); }
.card, .zone-card, .info-card, .review-card { background: rgba(255,255,255,.92); border: 1px solid var(--border); border-radius: 18px; box-shadow: 0 14px 36px rgba(56,92,138,.1); }
.card, .info-card, .review-card { padding: 24px; }
.card p, .info-card p, .review-card p { color: var(--muted); }
.card .text-link { display: inline-block; margin-top: 6px; }
.number { display: inline-flex; width: 36px; height: 36px; align-items: center; justify-content: center; margin-bottom: 16px; border-radius: 12px; color: #fff; background: var(--gradient); font-weight: 900; }
.zone-card { overflow: hidden; }
.zone-card img { width: 100%; aspect-ratio: 16/10; object-fit: contain; background: #fff; }
.zone-card .card-body { padding: 22px; }
.split { display: grid; grid-template-columns: minmax(0,.9fr) minmax(0,1.1fr); gap: 34px; align-items: center; }
.feature-list { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; margin-top: 22px; }
.feature-item { padding: 16px; border-radius: 14px; background: rgba(255,255,255,.8); border: 1px solid var(--border); }
.feature-item strong { display: block; color: var(--primary); margin-bottom: 4px; }
.steps { counter-reset: step; display: grid; gap: 14px; }
.step { position: relative; padding: 20px 20px 20px 68px; border-radius: 16px; background: #fff; border: 1px solid var(--border); }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 20px; top: 20px; width: 32px; height: 32px; display: grid; place-items: center; border-radius: 50%; color: #fff; background: var(--gradient); font-weight: 900; }
.review-card { position: relative; }
.review-card::before { content: "“"; position: absolute; right: 18px; top: 8px; color: rgba(40,156,255,.14); font-size: 64px; font-family: Georgia,serif; line-height: 1; }
.review-meta { color: var(--hint); font-size: 13px; font-weight: 700; }
.notice { padding: 24px; border-left: 4px solid var(--primary); border-radius: 14px; background: #fff; box-shadow: var(--shadow); }
.notice strong { color: var(--primary); }
.faq-list { display: grid; gap: 14px; }
details { background: rgba(255,255,255,.94); border: 1px solid var(--border); border-radius: 16px; box-shadow: 0 10px 26px rgba(56,92,138,.07); }
summary { padding: 20px 52px 20px 22px; cursor: pointer; color: var(--text); font-weight: 800; list-style: none; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); color: var(--primary); font-size: 24px; }
details[open] summary::after { content: "−"; }
details p { padding: 0 22px 20px; color: var(--muted); }
.page-hero { padding: 74px 0 48px; background: linear-gradient(135deg, rgba(245,247,251,.94), rgba(221,228,238,.78)); border-bottom: 1px solid rgba(40,156,255,.08); }
.page-hero .hero-grid { align-items: center; }
.breadcrumb { margin-bottom: 14px; color: var(--hint); font-size: 14px; }
.breadcrumb a { color: var(--primary); }
.tag-row { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 20px; }
.tag { padding: 7px 12px; border-radius: 999px; color: var(--primary); background: rgba(40,156,255,.09); font-size: 13px; font-weight: 800; }
.page-copy p { color: var(--muted); }
.contact-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px; }
.contact-card { padding: 24px; border-radius: 18px; background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); }
.site-footer { background: #243447; color: #EAF3FF; margin-top: 30px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3,1fr); gap: 42px; padding: 54px 0 34px; }
.footer-brand img { max-width: 150px; max-height: 48px; object-fit: contain; margin-bottom: 16px; }
.footer-brand p { color: rgba(234,243,255,.76); }
.site-footer h3 { color: #fff; font-size: 17px; }
.site-footer a { display: block; margin: 8px 0; color: rgba(234,243,255,.76); }
.site-footer a:hover { color: #fff; }
.compliance-note { padding: 20px 0; border-top: 1px solid rgba(234,243,255,.12); color: rgba(234,243,255,.74); font-size: 14px; }
.footer-bottom { border-top: 1px solid rgba(234,243,255,.12); padding: 18px 0; color: rgba(234,243,255,.62); font-size: 13px; }
@media (max-width: 1080px) {
  .nav { gap: 13px; }
  .nav-link { font-size: 14px; }
  .logo img { max-width: 135px; }
  .card-grid.four { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 980px) {
  .container { width: min(100% - 28px, 900px); }
  .header-inner { display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; min-height: 66px; }
  .mobile-menu-btn { display: block; justify-self: start; }
  .logo { justify-self: center; }
  .logo img { max-width: 132px; max-height: 44px; }
  .nav-wrap { display: none; }
  .header-action { justify-self: end; }
  .header-register { min-width: 74px; min-height: 40px; padding: 0 18px; }
  .hero-grid, .split { grid-template-columns: 1fr; }
  .hero-grid .visual-card { order: 2; }
  .card-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .footer-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .slides { aspect-ratio: 16/8.5; }
}
@media (max-width: 680px) {
  .container { width: min(100% - 22px, 640px); }
  .section { padding: 44px 0; }
  .hero, .page-hero { padding: 44px 0 28px; }
  h1 { font-size: 36px; }
  .lead { font-size: 16px; }
  .card-grid, .card-grid.two, .card-grid.four, .contact-grid, .feature-list, .footer-grid { grid-template-columns: 1fr; }
  .card, .info-card, .review-card { padding: 20px; }
  .banner-slider { margin: 18px 11px 28px; border-radius: 18px; }
  .slides { aspect-ratio: auto; min-height: 440px; }
  .slide img { height: 240px; object-fit: contain; }
  .slide-copy { left: 14px; right: 14px; top: auto; bottom: 46px; width: auto; transform: none; padding: 18px; }
  .slide-copy h2 { font-size: 25px; }
  .slider-btn { width: 38px; height: 38px; font-size: 22px; top: 120px; }
  .slider-btn.prev { left: 10px; }.slider-btn.next { right: 10px; }
  .drawer-nav { grid-template-columns: 1fr 1fr; }
}