* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: #FFFFFF;
  color: #252B3A;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.72;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.wrap { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.96);
  border-bottom: 1px solid rgba(49,92,255,0.12);
  backdrop-filter: blur(10px);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 74px;
}
.logo { display: inline-flex; align-items: center; flex: 0 0 auto; }
.logo img { max-height: 52px; width: auto; display: block; }
.nav-core {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  white-space: nowrap;
  flex-wrap: nowrap;
  flex: 1;
}
.nav-core a {
  color: #252B3A;
  position: relative;
  font-weight: 600;
  font-size: 15px;
  transition: color .2s ease;
}
.nav-core a:hover, .nav-core a.active { color: #315CFF; }
.nav-core a.active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -12px;
  width: 28px;
  height: 3px;
  border-radius: 999px;
  background: #315CFF;
  transform: translateX(-50%);
}
.register-btn, .main-btn, .footer-register {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 22px;
  background: linear-gradient(135deg, #315CFF 0%, #5F7DFF 52%, #8CA5FF 100%);
  color: #FFFFFF;
  border-radius: 999px;
  font-weight: 700;
  box-shadow: 0 12px 24px rgba(49,92,255,0.20);
  transition: transform .2s ease, box-shadow .2s ease;
}
.register-btn:hover, .main-btn:hover, .footer-register:hover { transform: translateY(-1px); box-shadow: 0 16px 28px rgba(49,92,255,0.26); }
.channel-bar { background: #F5F7FB; border-bottom: 1px solid rgba(49,92,255,0.10); }
.channel-scroll { display: flex; align-items: center; gap: 8px; overflow-x: auto; padding: 9px 0; scrollbar-width: thin; }
.channel-bar a {
  display: inline-flex;
  align-items: center;
  color: #5F6B82;
  padding: 8px 13px;
  border-radius: 999px;
  white-space: nowrap;
  font-size: 14px;
}
.channel-bar a:hover, .channel-bar a.active { color: #315CFF; background: rgba(49,92,255,0.10); }
.site-main { padding-top: 0; }
h1, h2, h3, .section-title { color: #17213A; line-height: 1.28; margin: 0; }
p { margin: 0; color: #5F6B82; }
.section { padding: 54px 0; }
.section.soft { background: #F5F7FB; }
.section.blue { background: #EEF4FF; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 28px; margin-bottom: 24px; }
.section-kicker { display: inline-flex; align-items: center; gap: 8px; color: #315CFF; font-weight: 800; font-size: 14px; margin-bottom: 8px; }
.section-title { font-size: clamp(25px, 3vw, 38px); }
.section-desc { max-width: 650px; margin-top: 12px; font-size: 16px; }
.banner-slider {
  max-width: 1180px;
  margin: 24px auto 34px;
  border-radius: 22px;
  background: #F5F7FB;
  box-shadow: 0 14px 34px rgba(31,45,85,0.08);
  overflow: hidden;
  position: relative;
  height: clamp(260px, 30vw, 360px);
}
.slide { position: absolute; inset: 0; opacity: 0; pointer-events: none; transition: opacity .45s ease; display: flex; align-items: center; justify-content: center; }
.slide.active { opacity: 1; pointer-events: auto; }
.banner-slider img { width: 100%; height: 100%; object-fit: contain; background: #F5F7FB; }
.banner-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 50%;
  background: rgba(255,255,255,0.86);
  color: #315CFF;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 10px 26px rgba(31,45,85,0.14);
}
.banner-arrow.prev { left: 16px; }
.banner-arrow.next { right: 16px; }
.banner-dots { position: absolute; left: 0; right: 0; bottom: 14px; display: flex; justify-content: center; gap: 8px; }
.banner-dots button { width: 9px; height: 9px; border: 0; border-radius: 999px; background: rgba(49,92,255,0.28); cursor: pointer; padding: 0; }
.banner-dots button.active { width: 24px; background: #315CFF; }
.banner-caption, .banner-text, .slide-title, .slide-desc, .slide-content, .slide-card, .banner-card { display: none !important; }
.hero-intro { padding: 8px 0 54px; }
.intro-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 28px; align-items: center; }
.intro-copy { padding: 28px; border-radius: 22px; background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFF 100%); border: 1px solid rgba(49,92,255,0.14); box-shadow: 0 14px 34px rgba(31,45,85,0.08); }
.intro-copy h1 { font-size: clamp(30px, 4vw, 48px); margin-bottom: 18px; }
.intro-copy p { margin-bottom: 14px; }
.intro-actions { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; margin-top: 18px; }
.text-link { color: #315CFF; font-weight: 700; }
.intro-media { border-radius: 22px; background: #F5F7FB; border: 1px solid rgba(49,92,255,0.14); padding: 18px; box-shadow: 0 14px 34px rgba(31,45,85,0.08); }
.intro-media img { width: 100%; max-height: 300px; object-fit: contain; }
.news-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.news-card, .advantage-item, .card, .zone-card, .info-card, .review-card, .faq-card, .notice-card, .support-card {
  background: #FFFFFF;
  border: 1px solid rgba(49,92,255,0.14);
  box-shadow: 0 14px 34px rgba(31,45,85,0.08);
  border-radius: 18px;
}
.news-card { padding: 20px; }
.news-card strong { display: block; color: #17213A; margin-bottom: 8px; font-size: 18px; }
.advantage-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.advantage-item { padding: 22px; }
.advantage-item span { display: inline-flex; width: 34px; height: 34px; border-radius: 50%; align-items: center; justify-content: center; background: rgba(49,92,255,0.10); color: #315CFF; font-weight: 800; margin-bottom: 12px; }
.feature-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 24px; align-items: center; }
.feature-media { border-radius: 20px; background: #F5F7FB; border: 1px solid rgba(49,92,255,0.14); padding: 16px; box-shadow: 0 14px 34px rgba(31,45,85,0.08); }
.feature-media img, .zone-card img, .info-card img, .content-img { max-width: 100%; height: auto; max-height: 230px; object-fit: contain; margin: 0 auto; }
.feature-copy { display: grid; gap: 14px; }
.mini-list { display: grid; gap: 10px; margin-top: 16px; }
.mini-list li { color: #5F6B82; }
ul { padding-left: 18px; margin: 0; }
.product-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.product-card { background: #FFFFFF; border: 1px solid rgba(49,92,255,0.14); border-radius: 18px; padding: 16px; box-shadow: 0 14px 34px rgba(31,45,85,0.08); }
.product-card img { width: 100%; height: 160px; object-fit: contain; background: #F5F7FB; border-radius: 14px; margin-bottom: 14px; }
.product-card h3 { font-size: 19px; margin-bottom: 8px; }
.matrix { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.zone-card { padding: 16px; }
.zone-card img { width: 100%; height: 150px; background: #F5F7FB; border-radius: 14px; margin-bottom: 14px; }
.zone-card h3 { font-size: 19px; margin-bottom: 8px; }
.app-panel { display: grid; grid-template-columns: .92fr 1.08fr; gap: 28px; align-items: center; padding: 26px; border-radius: 22px; background: #FFFFFF; border: 1px solid rgba(49,92,255,0.14); box-shadow: 0 14px 34px rgba(31,45,85,0.08); }
.app-panel img { width: 100%; max-height: 280px; object-fit: contain; background: #F5F7FB; border-radius: 18px; }
.notice-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.notice-card { padding: 20px; }
.notice-card h3 { font-size: 19px; margin-bottom: 8px; }
.security-band { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.security-band .support-card { padding: 18px; }
.reviews { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.review-card { padding: 20px; }
.review-card strong { display: block; color: #17213A; margin-bottom: 10px; }
.faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.faq-card { padding: 20px; }
.faq-card h3 { font-size: 19px; margin-bottom: 8px; }
.about-band { display: grid; grid-template-columns: 1fr .9fr; gap: 24px; align-items: center; }
.about-band .about-copy { padding: 26px; border-radius: 22px; background: #FFFFFF; border: 1px solid rgba(49,92,255,0.14); box-shadow: 0 14px 34px rgba(31,45,85,0.08); }
.about-band img { width: 100%; max-height: 280px; object-fit: contain; background: #F5F7FB; border-radius: 20px; padding: 12px; border: 1px solid rgba(49,92,255,0.14); }
.page-hero { padding: 42px 0 32px; background: linear-gradient(180deg, #F8FAFF 0%, #FFFFFF 100%); border-bottom: 1px solid rgba(49,92,255,0.10); }
.page-hero-grid { display: grid; grid-template-columns: 1fr .78fr; gap: 26px; align-items: center; }
.page-hero h1 { font-size: clamp(30px, 4vw, 46px); margin-bottom: 14px; }
.page-hero p { font-size: 16px; }
.page-hero img { width: 100%; max-height: 260px; object-fit: contain; background: #F5F7FB; border: 1px solid rgba(49,92,255,0.14); border-radius: 20px; padding: 12px; box-shadow: 0 14px 34px rgba(31,45,85,0.08); }
.content-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.info-card { padding: 22px; }
.info-card h2, .info-card h3 { font-size: 22px; margin-bottom: 12px; }
.service-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.service-points .support-card { padding: 22px; }
.service-points h3 { font-size: 19px; margin-bottom: 8px; }
.policy-box { padding: 24px; border-radius: 20px; background: #EEF4FF; border: 1px solid rgba(49,92,255,0.14); }
.policy-box h2 { font-size: 24px; margin-bottom: 12px; }
.cta-band { padding: 30px; border-radius: 24px; background: linear-gradient(135deg, #EEF4FF 0%, #FFFFFF 100%); border: 1px solid rgba(49,92,255,0.14); box-shadow: 0 14px 34px rgba(31,45,85,0.08); display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.cta-band p { max-width: 760px; }
.site-footer { background: #101828; color: #D8E0F2; padding: 54px 0 20px; }
.site-footer p { color: #D8E0F2; }
.footer-grid { display: grid; grid-template-columns: 1.35fr .65fr .65fr .95fr; gap: 34px; }
footer .logo img, .footer-logo img { max-height: 48px; }
.footer-brand p { margin-top: 14px; }
.footer-note { font-size: 14px; color: #AAB6D0 !important; }
.footer-col { display: grid; align-content: start; gap: 10px; }
.footer-col h3 { color: #FFFFFF; font-size: 18px; margin-bottom: 4px; }
.footer-col a { color: #D8E0F2; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); margin-top: 30px; padding-top: 18px; font-size: 14px; color: #AAB6D0; }
.menu-toggle { display: none; width: 42px; height: 42px; border: 0; background: transparent; padding: 8px; }
.menu-toggle span { display: block; height: 2px; background: #17213A; border-radius: 2px; margin: 6px 0; }
.drawer-mask { position: fixed; inset: 0; background: rgba(16,24,40,0.42); z-index: 1200; opacity: 0; pointer-events: none; transition: opacity .2s ease; }
.mobile-drawer { position: fixed; top: 0; left: 0; height: 100vh; width: 84vw; max-width: 320px; background: #FFFFFF; z-index: 1201; transform: translateX(-105%); transition: transform .25s ease; overflow-y: auto; box-shadow: 20px 0 42px rgba(16,24,40,0.20); }
.drawer-open .drawer-mask { opacity: 1; pointer-events: auto; }
.drawer-open .mobile-drawer { transform: translateX(0); }
.drawer-open { overflow: hidden; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding: 18px; border-bottom: 1px solid rgba(49,92,255,0.12); }
.drawer-close { width: 38px; height: 38px; border: 0; background: #F5F7FB; border-radius: 50%; color: #17213A; font-size: 24px; }
.drawer-nav { display: grid; padding: 12px; }
.drawer-nav a { padding: 13px 14px; border-radius: 12px; color: #252B3A; font-weight: 650; }
.drawer-nav a.active, .drawer-nav a:hover { color: #315CFF; background: rgba(49,92,255,0.10); }
.mobile-bottom-nav { display: none; }
@media (max-width: 1080px) {
  .nav-core { gap: 16px; }
  .product-row { grid-template-columns: repeat(2, 1fr); }
  .matrix { grid-template-columns: repeat(2, 1fr); }
  .news-strip, .advantage-row, .security-band { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 780px) {
  body { padding-bottom: 70px; }
  .wrap { width: min(100% - 24px, 1180px); }
  .header-inner { min-height: 64px; gap: 10px; }
  .menu-toggle { display: block; }
  .nav-core { display: none; }
  .header-register { min-height: 38px; padding: 0 16px; }
  .logo img { max-height: 42px; }
  .channel-bar { display: none; }
  .banner-slider { height: clamp(150px, 48vw, 210px); margin: 14px auto 22px; border-radius: 16px; }
  .banner-arrow { width: 34px; height: 34px; font-size: 22px; }
  .banner-arrow.prev { left: 8px; }
  .banner-arrow.next { right: 8px; }
  .section { padding: 38px 0; }
  .section-head, .cta-band { display: grid; gap: 14px; }
  .intro-grid, .feature-grid, .app-panel, .about-band, .page-hero-grid, .content-grid { grid-template-columns: 1fr; }
  .intro-copy { padding: 22px; }
  .news-strip, .advantage-row, .product-row, .matrix, .notice-list, .security-band, .reviews, .faq-grid, .service-points { grid-template-columns: 1fr; }
  .page-hero { padding: 30px 0 24px; }
  .product-card img, .zone-card img { height: 140px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .mobile-bottom-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1002;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: #FFFFFF;
    border-top: 1px solid rgba(49,92,255,0.12);
    padding: 7px 6px calc(7px + env(safe-area-inset-bottom));
    box-shadow: 0 -10px 28px rgba(31,45,85,0.08);
  }
  .mobile-bottom-nav a { display: grid; place-items: center; color: #5F6B82; font-size: 13px; font-weight: 700; min-height: 42px; border-radius: 12px; }
  .mobile-bottom-nav a.active { color: #315CFF; background: rgba(49,92,255,0.10); }
}