:root {
  --bg: #F4FBFF;
  --surface: #FFFFFF;
  --soft: #E8F7FF;
  --primary: #10AEEA;
  --primary-deep: #155A9D;
  --text: #24384A;
  --muted: #60758A;
  --footer: #073A68;
  --line: #CDEAF7;
  --shadow: 0 18px 55px rgba(21, 90, 157, .12);
  --gradient: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body { margin: 0; overflow-x: hidden; background: var(--bg); color: var(--text); font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif; line-height: 1.75; }
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button, input, textarea { font: inherit; }
.container { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.skip-link { position: fixed; top: -100px; left: 16px; z-index: 9999; padding: 10px 16px; background: var(--footer); color: #fff; border-radius: 10px; }
.skip-link:focus { top: 16px; }
.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,.95); border-bottom: 1px solid rgba(16,174,234,.12); backdrop-filter: blur(16px); }
.header-inner { min-height: 76px; display: flex; align-items: center; gap: 22px; }
.brand-logo { flex: 0 0 auto; width: 152px; }
.brand-logo img { width: 100%; max-height: 50px; object-fit: contain; }
.desktop-nav { min-width: 0; flex: 1; display: flex; align-items: center; justify-content: center; gap: 4px; white-space: nowrap; }
.desktop-nav a { padding: 9px 9px; border-radius: 11px; color: var(--text); font-size: 14px; transition: .25s; }
.desktop-nav a:hover, .desktop-nav a.active { color: var(--primary-deep); background: var(--soft); }
.header-actions { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.main-btn, .secondary-btn { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; padding: 10px 22px; border-radius: 999px; font-weight: 700; transition: transform .25s, box-shadow .25s; }
.main-btn { color: #fff; background: var(--gradient); box-shadow: 0 10px 24px rgba(22,136,216,.24); }
.secondary-btn { color: var(--primary-deep); background: #fff; border: 1px solid var(--line); }
.main-btn:hover, .secondary-btn:hover { transform: translateY(-2px); }
.menu-toggle { display: none; width: 44px; height: 44px; border: 0; border-radius: 50%; background: var(--soft); padding: 11px; cursor: pointer; }
.menu-toggle span { display: block; height: 2px; margin: 5px 0; background: var(--primary-deep); border-radius: 2px; }
.drawer-overlay { position: fixed; inset: 0; z-index: 1090; background: rgba(7,58,104,.42); }
.mobile-drawer { position: fixed; top: 0; right: 0; z-index: 1100; width: min(360px, 88vw); height: 100dvh; padding: 22px; background: #fff; box-shadow: -20px 0 50px rgba(7,58,104,.2); transform: translateX(105%); transition: transform .3s ease; overflow-y: auto; }
.mobile-drawer.open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 18px; border-bottom: 1px solid var(--line); color: var(--primary-deep); font-size: 21px; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 50%; background: var(--soft); color: var(--primary-deep); font-size: 28px; cursor: pointer; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 18px 0; }
.drawer-nav a { padding: 12px; border-radius: 12px; background: #F8FCFF; color: var(--text); }
.drawer-register { width: 100%; }
.section { padding: 76px 0; }
.section.compact { padding: 54px 0; }
.section-heading { max-width: 720px; margin-bottom: 30px; }
.section-heading.center { margin-inline: auto; text-align: center; }
.section-heading h2, .page-hero h1, .feature-copy h2, .footer-cta h2 { margin: 8px 0 14px; color: var(--primary-deep); line-height: 1.25; }
.section-heading h2, .feature-copy h2, .footer-cta h2 { font-size: clamp(28px, 4vw, 42px); }
.page-hero h1 { font-size: clamp(38px, 6vw, 64px); }
.section-heading p, .page-hero p, .feature-copy p, .footer-cta p { color: var(--muted); }
.eyebrow { display: inline-block; color: var(--primary); font-size: 14px; font-weight: 800; letter-spacing: .12em; }
.text-link { display: inline-flex; align-items: center; gap: 6px; color: var(--primary-deep); font-weight: 700; }
.text-link::after { content: "→"; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin-top: 24px; }
.page-hero { padding: 70px 0; background: linear-gradient(180deg, #EAF8FF 0%, rgba(244,251,255,0) 100%); }
.page-hero__inner { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr); align-items: center; gap: 46px; }
.page-hero__copy { max-width: 650px; }
.page-hero__inner.no-media { grid-template-columns: 1fr; }
.page-hero__inner.no-media .page-hero__copy { max-width: 820px; }
.page-hero__media { position: relative; padding: 18px; background: rgba(255,255,255,.82); border: 1px solid rgba(16,174,234,.18); border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.page-hero__media::before { content: ""; position: absolute; width: 180px; height: 180px; right: -36px; top: -38px; z-index: -1; border-radius: 50%; background: rgba(53,215,255,.22); filter: blur(4px); }
.page-hero__media img { width: 100%; max-height: 430px; object-fit: contain; border-radius: 20px; }
.home-carousel { position: relative; overflow: hidden; background: #DFF5FF; }
.carousel-track { display: flex; transition: transform .55s ease; }
.carousel-slide { min-width: 100%; }
.carousel-slide img { width: 100%; aspect-ratio: 1920/720; object-fit: cover; object-position: center; }
.carousel-arrow { position: absolute; top: 50%; z-index: 3; width: 48px; height: 48px; border: 0; border-radius: 50%; background: rgba(255,255,255,.9); color: var(--primary-deep); font-size: 26px; box-shadow: 0 8px 22px rgba(7,58,104,.18); cursor: pointer; transform: translateY(-50%); }
.carousel-arrow.prev { left: 24px; }.carousel-arrow.next { right: 24px; }
.carousel-dots { position: absolute; bottom: 18px; left: 50%; z-index: 4; display: flex; gap: 9px; transform: translateX(-50%); }
.carousel-dot { width: 10px; height: 10px; border: 0; border-radius: 50%; background: rgba(255,255,255,.65); cursor: pointer; }
.carousel-dot.active { width: 26px; border-radius: 999px; background: #fff; }
.brand-intro { padding: 68px 0 28px; }
.brand-intro__inner { display: grid; grid-template-columns: 1fr 380px; gap: 42px; align-items: center; }
.brand-intro__media { padding: 16px; background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.brand-intro__media img { width: 100%; object-fit: contain; max-height: 320px; }
.quick-scroll { display: flex; gap: 12px; overflow-x: auto; padding: 4px 2px 14px; scrollbar-width: thin; }
.quick-scroll a { flex: 0 0 auto; padding: 12px 20px; border-radius: 999px; background: #fff; color: var(--primary-deep); border: 1px solid var(--line); box-shadow: 0 8px 18px rgba(21,90,157,.07); }
.card-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.card-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.info-card, .review-card, .faq-card, .notice-card { background: #fff; border: 1px solid rgba(16,174,234,.15); border-radius: var(--radius-md); box-shadow: 0 12px 35px rgba(21,90,157,.08); }
.info-card { padding: 26px; }
.info-card h3 { margin: 8px 0 10px; color: var(--primary-deep); font-size: 21px; }
.info-card p { margin: 0 0 14px; color: var(--muted); }
.card-tag { display: inline-block; color: var(--primary); font-size: 13px; font-weight: 800; }
.feature-section { padding: 28px 0 76px; }
.feature-panel { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 46px; padding: 34px; border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow); }
.feature-panel.reverse .feature-media { order: 2; }
.feature-media { border-radius: 22px; overflow: hidden; background: var(--soft); }
.feature-media img { width: 100%; max-height: 430px; object-fit: contain; }
.feature-copy ul, .content-list { margin: 20px 0; padding: 0; list-style: none; }
.feature-copy li, .content-list li { position: relative; padding: 7px 0 7px 26px; color: var(--muted); }
.feature-copy li::before, .content-list li::before { content: "✓"; position: absolute; left: 0; top: 7px; color: var(--primary); font-weight: 800; }
.triple-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 22px; }
.image-card { overflow: hidden; background: #fff; border-radius: var(--radius-md); box-shadow: var(--shadow); }
.image-card img { width: 100%; aspect-ratio: 16/10; object-fit: contain; background: var(--soft); }
.image-card__body { padding: 24px; }
.image-card h3 { margin: 0 0 8px; color: var(--primary-deep); }
.image-card p { color: var(--muted); }
.app-banner { padding: 34px; display: grid; grid-template-columns: 1fr 420px; align-items: center; gap: 34px; border-radius: var(--radius-lg); background: linear-gradient(135deg, #E8F7FF 0%, #FFFFFF 60%, #DDF5FF 100%); border: 1px solid var(--line); box-shadow: var(--shadow); }
.app-banner img { width: 100%; max-height: 300px; object-fit: contain; }
.split-list { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 20px; }
.notice-card { padding: 24px; }
.notice-card h3 { margin-top: 0; color: var(--primary-deep); }
.notice-card p { color: var(--muted); }
.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 20px; }
.review-card { padding: 24px; }
.review-card p { color: var(--muted); }
.review-card strong { color: var(--primary-deep); }
.review-mark { color: var(--primary); font-size: 46px; line-height: .8; }
.help-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 18px; }
.help-card { padding: 24px; background: var(--soft); border-radius: var(--radius-md); }
.help-card h3 { margin-top: 0; color: var(--primary-deep); }
.faq-list { display: grid; gap: 14px; }
details.faq-item { background: #fff; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
details.faq-item summary { cursor: pointer; padding: 20px 24px; color: var(--primary-deep); font-weight: 700; list-style: none; }
details.faq-item summary::-webkit-details-marker { display: none; }
details.faq-item p { margin: 0; padding: 0 24px 22px; color: var(--muted); }
.compliance-section { padding-top: 30px; }
.compliance-card { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; padding: 34px; border-radius: var(--radius-lg); background: #073A68; color: #EAF8FF; }
.compliance-card h2 { margin: 8px 0; color: #fff; }
.compliance-card p { margin: 0 0 12px; color: #D6F2FF; }
.content-block { padding: 28px; background: #fff; border: 1px solid rgba(16,174,234,.15); border-radius: var(--radius-md); box-shadow: 0 10px 30px rgba(21,90,157,.07); }
.content-block h2, .content-block h3 { color: var(--primary-deep); }
.content-block p { color: var(--muted); }
.content-columns { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 24px; }
.content-columns.three { grid-template-columns: repeat(3, minmax(0,1fr)); }
.gallery-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 20px; }
.gallery-item { overflow: hidden; background: #fff; border-radius: var(--radius-md); box-shadow: var(--shadow); }
.gallery-item img { width: 100%; aspect-ratio: 16/10; object-fit: contain; background: var(--soft); }
.gallery-item div { padding: 20px; }
.gallery-item h3 { margin: 0 0 8px; color: var(--primary-deep); }
.gallery-item p { margin: 0; color: var(--muted); }
.table-wrap { overflow-x: auto; border-radius: var(--radius-md); box-shadow: var(--shadow); }
.service-table { width: 100%; border-collapse: collapse; min-width: 680px; background: #fff; }
.service-table th, .service-table td { padding: 16px 18px; text-align: left; border-bottom: 1px solid var(--line); }
.service-table th { background: var(--soft); color: var(--primary-deep); }
.contact-flow { counter-reset: step; display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 18px; }
.contact-step { position: relative; padding: 26px; background: #fff; border-radius: var(--radius-md); box-shadow: var(--shadow); }
.contact-step::before { counter-increment: step; content: counter(step); display: grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; background: var(--gradient); color: #fff; font-weight: 800; }
.contact-step h3 { color: var(--primary-deep); }
.footer-cta { padding: 64px 0; background: var(--soft); }
.footer-cta__inner { display: flex; align-items: center; justify-content: space-between; gap: 36px; }
.site-footer { padding: 62px 0 20px; background: var(--footer); color: #EAF8FF; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 32px; }
.footer-grid h3 { margin-top: 0; color: #fff; }
.footer-grid a { display: block; margin: 10px 0; color: #D7F2FF; }
.footer-brand strong { font-size: 26px; color: #fff; }
.footer-brand p { max-width: 380px; color: #CDEBFA; }
.footer-bottom { display: flex; justify-content: space-between; gap: 24px; margin-top: 36px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.16); color: #BFDDED; font-size: 14px; }
@media (max-width: 1180px) {
  .desktop-nav { display: none; }
  .menu-toggle { display: block; }
  .header-inner { min-height: 70px; }
  .brand-logo { margin-right: auto; }
}
@media (max-width: 900px) {
  .page-hero__inner, .brand-intro__inner, .feature-panel, .app-banner, .compliance-card { grid-template-columns: 1fr; }
  .feature-panel.reverse .feature-media { order: 0; }
  .card-grid, .help-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .triple-grid, .review-grid, .gallery-grid, .content-columns.three { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .app-banner img { max-height: 260px; }
  .contact-flow { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .footer-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .footer-cta__inner { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 640px) {
  .container { width: min(100% - 24px, 1180px); }
  .site-header .main-btn { padding-inline: 17px; min-height: 42px; }
  .brand-logo { width: 128px; }
  .section { padding: 54px 0; }
  .page-hero { padding: 46px 0; }
  .page-hero__media { padding: 10px; }
  .carousel-slide img { aspect-ratio: 4/3; object-fit: cover; }
  .carousel-arrow { width: 40px; height: 40px; font-size: 22px; }
  .carousel-arrow.prev { left: 10px; }.carousel-arrow.next { right: 10px; }
  .brand-intro { padding-top: 44px; }
  .card-grid, .card-grid.three, .card-grid.two, .triple-grid, .review-grid, .help-grid, .gallery-grid, .split-list, .content-columns, .content-columns.three, .contact-flow { grid-template-columns: 1fr; }
  .feature-panel, .app-banner, .compliance-card { padding: 22px; gap: 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
  .drawer-nav { grid-template-columns: 1fr 1fr; }
}