* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: #E6EBF2;
  color: #243447;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 900;
  background: rgba(255,255,255,0.90);
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 24px rgba(56,92,138,0.10);
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  min-height: 76px;
  padding: 0 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo img { max-height: 52px; width: auto; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 24px; white-space: nowrap; flex-wrap: nowrap; }
.nav-core a { color: #4E5F7A; position: relative; font-weight: 700; padding: 8px 6px; border-radius: 999px; }
.nav-core a:hover, .nav-core a.active { color: #289CFF; background: rgba(40,156,255,0.08); }
.nav-core a.active::after { content: ""; position: absolute; left: 50%; bottom: -10px; width: 28px; height: 3px; border-radius: 999px; background: #289CFF; transform: translateX(-50%); }
.register-top, .main-btn, .mini-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 22px;
  border-radius: 999px;
  background: linear-gradient(180deg, #32D1F6 0%, #27B9F4 35%, #249BFF 100%);
  color: #FFFFFF;
  font-weight: 800;
  box-shadow: 0 12px 24px rgba(36,155,255,0.24);
  white-space: nowrap;
}
.mobile-menu-btn { display: none; width: 42px; height: 42px; border: 0; border-radius: 14px; background: #F5F7FB; align-items: center; justify-content: center; flex-direction: column; gap: 5px; }
.mobile-menu-btn span { width: 20px; height: 2px; border-radius: 8px; background: #289CFF; }
.page-shell { max-width: 1420px; margin: 0 auto; display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 24px; padding: 28px 24px 0; }
.site-main { min-width: 0; }
.side-channel { position: sticky; top: 110px; align-self: start; background: rgba(255,255,255,0.92); border: 1px solid rgba(40,156,255,0.14); border-radius: 18px; box-shadow: 0 14px 32px rgba(56,92,138,0.10); padding: 12px; }
.side-channel a { display: block; padding: 9px 12px; margin: 2px 0; color: #66788A; border-radius: 12px; font-weight: 700; font-size: 14px; }
.side-channel a:hover, .side-channel a.active { color: #289CFF; background: rgba(40,156,255,0.10); }
.floating-service { position: fixed; right: 18px; top: 42%; z-index: 60; display: flex; flex-direction: column; gap: 10px; }
.floating-service a, .floating-service button { min-width: 58px; border: 1px solid rgba(40,156,255,0.16); border-radius: 16px; background: #FFFFFF; color: #289CFF; box-shadow: 0 14px 30px rgba(56,92,138,0.12); padding: 10px 12px; font-weight: 800; cursor: pointer; font-family: inherit; }
.floating-service a.register-link { background: linear-gradient(180deg, #32D1F6 0%, #27B9F4 35%, #249BFF 100%); color: #FFFFFF; }
.banner-slider { max-width: 1200px; margin: 0 auto 36px; border-radius: 22px; background: #FFFFFF; box-shadow: 0 18px 40px rgba(56,92,138,0.12); overflow: hidden; position: relative; z-index: 1; height: 360px; }
.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: #FFFFFF; }
.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; border: none; width: 42px; height: 42px; border-radius: 999px; background: rgba(255,255,255,0.86); color: #289CFF; box-shadow: 0 8px 20px rgba(56,92,138,0.16); font-size: 28px; cursor: pointer; }
.slider-arrow.prev { left: 14px; }
.slider-arrow.next { right: 14px; }
.slider-dots { position: absolute; left: 50%; bottom: 14px; transform: translateX(-50%); display: flex; gap: 8px; z-index: 3; }
.slider-dots button { width: 9px; height: 9px; border-radius: 50%; border: none; background: rgba(40,156,255,0.24); padding: 0; cursor: pointer; }
.slider-dots button.active { background: #289CFF; }
.section { margin: 0 auto 28px; max-width: 1200px; }
.hero-panel, .card, .zone-card, .info-card, .review-card, .faq-item, .notice-box { background: rgba(255,255,255,0.92); border: 1px solid rgba(40,156,255,0.16); box-shadow: 0 14px 36px rgba(56,92,138,0.10); border-radius: 22px; }
.hero-panel { padding: 34px; display: grid; grid-template-columns: minmax(0,1.1fr) minmax(260px,.9fr); gap: 28px; align-items: center; }
h1, h2, h3, .section-title { color: #289CFF; line-height: 1.28; margin: 0 0 14px; }
h1 { font-size: clamp(28px, 4vw, 46px); }
h2 { font-size: clamp(22px, 3vw, 32px); }
h3 { font-size: 20px; }
p { color: #66788A; margin: 0 0 12px; }
.lead { font-size: 17px; color: #4E5F7A; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
.text-link { color: #289CFF; font-weight: 800; }
.content-img { width: 100%; max-height: 290px; object-fit: contain; background: #F5F7FB; border-radius: 18px; padding: 8px; }
.quick-grid { display: grid; grid-template-columns: repeat(5, minmax(0,1fr)); gap: 14px; }
.quick-grid .card { padding: 18px; min-height: 142px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 16px; }
.card, .zone-card, .info-card, .review-card, .faq-item { padding: 22px; }
.zone-card img, .info-card img { width: 100%; height: 180px; object-fit: contain; background: #F5F7FB; border-radius: 16px; margin-bottom: 16px; }
.feature-row { display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); gap: 22px; align-items: center; }
.badge-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.badge-row span { color: #289CFF; background: rgba(40,156,255,0.10); padding: 7px 12px; border-radius: 999px; font-weight: 700; }
.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px; }
.review-card strong { display: block; color: #243447; margin-bottom: 8px; }
.faq-list { display: grid; gap: 14px; }
.notice-box { padding: 24px; background: linear-gradient(180deg, #FFFFFF 0%, #F5F7FB 100%); }
.inner-hero { margin: 0 auto 28px; max-width: 1200px; background: linear-gradient(135deg, rgba(255,255,255,0.96), rgba(238,242,247,0.92)); border-radius: 24px; border: 1px solid rgba(40,156,255,0.16); padding: 38px; box-shadow: 0 18px 40px rgba(56,92,138,0.12); }
.inner-hero .crumb { color: #289CFF; font-weight: 800; margin-bottom: 10px; }
.split-intro { display: grid; grid-template-columns: minmax(0,1fr) minmax(260px,420px); gap: 24px; align-items: center; }
.site-footer { margin-top: 36px; background: #243447; color: #EAF3FF; }
.footer-inner { max-width: 1200px; margin: 0 auto; padding: 34px 24px 48px; display: grid; grid-template-columns: 1.2fr 1fr 1.4fr; gap: 28px; align-items: start; }
.footer-brand img { max-height: 50px; width: auto; margin-bottom: 12px; }
.site-footer p, .site-footer a { color: #EAF3FF; opacity: .88; }
.footer-links { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px; }
.mobile-drawer, .drawer-mask, .mobile-bottom-nav { display: none; }
.drawer-mask { position: fixed; inset: 0; background: rgba(36,52,71,.42); z-index: 9990; }
.mobile-drawer { position: fixed; left: 0; top: 0; bottom: 0; width: 84vw; max-width: 320px; background: #FFFFFF; z-index: 10000; transform: translateX(-105%); transition: transform .25s ease; box-shadow: 16px 0 36px rgba(36,52,71,.18); overflow-y: auto; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding: 16px; border-bottom: 1px solid rgba(40,156,255,.12); }
.drawer-logo img { max-height: 44px; }
.drawer-close { border: 0; background: #F5F7FB; color: #289CFF; border-radius: 12px; width: 38px; height: 38px; font-size: 26px; cursor: pointer; }
.drawer-links { padding: 12px; display: grid; gap: 4px; }
.drawer-links a { color: #66788A; padding: 11px 12px; border-radius: 12px; font-weight: 750; }
.drawer-links a.active, .drawer-links a:hover { color: #289CFF; background: rgba(40,156,255,0.10); }
@media (max-width: 1180px) {
  .page-shell { grid-template-columns: 1fr; max-width: 1200px; }
  .side-channel, .floating-service { display: none; }
}
@media (max-width: 860px) {
  body { padding-bottom: 72px; }
  .header-inner { min-height: 64px; padding: 0 14px; gap: 12px; display: grid; grid-template-columns: 48px 1fr auto; }
  .mobile-menu-btn { display: flex; }
  .nav-core { display: none; }
  .logo { justify-self: center; }
  .logo img { max-height: 44px; }
  .register-top { min-height: 38px; padding: 0 16px; }
  .page-shell { padding: 18px 14px 0; }
  .banner-slider { height: 210px; margin-bottom: 24px; border-radius: 18px; }
  .slider-arrow { width: 36px; height: 36px; font-size: 23px; }
  .hero-panel, .split-intro, .feature-row, .grid-2, .grid-3, .grid-4, .footer-inner { grid-template-columns: 1fr; }
  .quick-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .review-grid { grid-template-columns: 1fr; }
  .hero-panel, .inner-hero { padding: 24px; }
  .mobile-drawer { display: block; }
  .drawer-open .mobile-drawer { transform: translateX(0); }
  .drawer-open .drawer-mask { display: block; }
  .drawer-open { overflow: hidden; }
  .mobile-bottom-nav { position: fixed; left: 12px; right: 12px; bottom: 10px; z-index: 900; display: grid; grid-template-columns: repeat(4,1fr); gap: 8px; background: rgba(255,255,255,.94); border: 1px solid rgba(40,156,255,.16); border-radius: 18px; padding: 8px; box-shadow: 0 12px 32px rgba(56,92,138,0.18); backdrop-filter: blur(10px); }
  .mobile-bottom-nav a { text-align: center; color: #289CFF; font-weight: 800; padding: 8px 2px; border-radius: 12px; background: rgba(40,156,255,.08); }
}
@media (max-width: 540px) {
  .quick-grid { grid-template-columns: 1fr; }
  .banner-slider { height: 180px; }
  .card, .zone-card, .info-card, .review-card, .faq-item { padding: 18px; }
  .content-img { max-height: 230px; }
}