:root {
  --bg: #F4FBFF;
  --surface: #FFFFFF;
  --soft: #E8F7FF;
  --primary: #11AEEA;
  --accent: #1688D8;
  --deep: #155A9D;
  --text: #24384A;
  --muted: #60758A;
  --border: rgba(17,174,234,.18);
  --shadow: 0 18px 45px rgba(16,105,160,.12);
  --shadow-soft: 0 10px 26px rgba(16,105,160,.09);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --container: min(100% - 32px, 1360px);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 0; overflow-x: hidden; background: var(--bg); color: var(--text); font-family: "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.75; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { color: inherit; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 9999; padding: 10px 16px; border-radius: 10px; background: #073A68; color: #fff; transition: top .2s ease; }
.skip-link:focus { top: 16px; }
.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--border); box-shadow: 0 6px 22px rgba(16,105,160,.06); backdrop-filter: blur(14px); }
.header-inner { width: var(--container); min-height: 78px; margin: 0 auto; display: flex; align-items: center; gap: clamp(12px,2vw,28px); }
.brand-logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.brand-logo img { width: clamp(118px,10vw,154px); height: auto; }
.desktop-nav { min-width: 0; flex: 1; display: flex; align-items: center; justify-content: center; gap: clamp(8px,1.15vw,20px); }
.desktop-nav a { position: relative; white-space: nowrap; color: var(--deep); font-size: clamp(13px,.94vw,15px); font-weight: 700; padding: 10px 0; }
.desktop-nav a::after { content: ""; position: absolute; left: 50%; right: 50%; bottom: 4px; height: 2px; border-radius: 3px; background: linear-gradient(90deg,#35D7FF,#1688D8); transition: left .2s ease,right .2s ease; }
.desktop-nav a:hover::after,.desktop-nav a.active::after { left: 0; right: 0; }
.desktop-nav a.active { color: var(--primary); }
.header-actions { flex: 0 0 auto; display: flex; align-items: center; gap: 10px; }
.main-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 24px; border: 0; border-radius: 999px; color: #fff; font-weight: 800; white-space: nowrap; background: linear-gradient(135deg,#35D7FF 0%,#1688D8 100%); box-shadow: 0 10px 22px rgba(22,136,216,.24); transition: transform .2s ease, box-shadow .2s ease; }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(22,136,216,.30); }
.menu-toggle { display: none; width: 46px; height: 46px; border: 1px solid var(--border); border-radius: 14px; background: var(--soft); align-items: center; justify-content: center; flex-direction: column; gap: 5px; cursor: pointer; }
.menu-toggle span { width: 21px; height: 2px; border-radius: 2px; background: var(--deep); }
.drawer-backdrop { position: fixed; inset: 0; z-index: 1190; background: rgba(7,58,104,.38); opacity: 0; transition: opacity .25s ease; }
.drawer-backdrop.show { opacity: 1; }
.mobile-drawer { position: fixed; top: 0; right: 0; bottom: 0; z-index: 1200; width: min(88vw,360px); padding: 22px; background: #fff; box-shadow: -24px 0 60px rgba(7,58,104,.20); transform: translateX(104%); transition: transform .28s ease; overflow-y: auto; }
.mobile-drawer.open { transform: translateX(0); }
.drawer-open { overflow: hidden; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.drawer-brand { color: var(--accent); font-size: 26px; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 50%; background: var(--soft); color: var(--deep); font-size: 28px; line-height: 1; cursor: pointer; }
.mobile-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.mobile-nav a { padding: 11px 12px; border-radius: 12px; color: var(--deep); background: #f8fdff; font-size: 14px; font-weight: 700; }
.mobile-nav a.active,.mobile-nav a:hover { color: var(--accent); background: var(--soft); }
.drawer-register { width: 100%; margin-top: 20px; }
main { min-height: 64vh; }
.container { width: var(--container); margin-inline: auto; }
.section { padding: clamp(56px,7vw,98px) 0; }
.section.compact { padding: clamp(42px,5vw,68px) 0; }
.section.soft { background: var(--soft); }
.section.white { background: #fff; }
.section-head { max-width: 800px; margin-bottom: 30px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 8px; color: var(--accent); font-weight: 800; letter-spacing: .04em; }
.eyebrow::before { content: ""; width: 28px; height: 3px; border-radius: 4px; background: linear-gradient(90deg,#35D7FF,#1688D8); }
h1,h2,h3 { margin: 0 0 14px; color: var(--deep); line-height: 1.28; }
h1 { font-size: clamp(34px,5vw,62px); letter-spacing: -.035em; }
h2 { font-size: clamp(28px,3.4vw,44px); letter-spacing: -.025em; }
h3 { font-size: clamp(19px,2vw,25px); }
p { margin: 0 0 16px; }
.lead { max-width: 820px; color: var(--muted); font-size: clamp(17px,1.7vw,21px); }
.page-hero { padding: clamp(62px,7vw,104px) 0 48px; background: radial-gradient(circle at 85% 22%,rgba(53,215,255,.24),transparent 30%), linear-gradient(180deg,#fff 0%,#F4FBFF 100%); }
.page-hero .hero-grid { display: grid; grid-template-columns: minmax(0,1.15fr) minmax(320px,.85fr); gap: clamp(28px,5vw,72px); align-items: center; }
.page-hero .hero-copy { max-width: 780px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.secondary-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 22px; border: 1px solid var(--border); border-radius: 999px; color: var(--accent); background: #fff; font-weight: 800; }
.media-card { overflow: hidden; border: 1px solid rgba(255,255,255,.75); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow); }
.media-card img { width: 100%; height: auto; aspect-ratio: 3/2; object-fit: contain; background: var(--soft); }
.media-caption { padding: 20px 22px 22px; color: var(--muted); }
.carousel-wrap { padding: 24px 0 0; }
.carousel { position: relative; width: var(--container); margin: 0 auto; overflow: hidden; border-radius: clamp(20px,3vw,34px); background: var(--soft); box-shadow: var(--shadow); aspect-ratio: 16 / 6.2; min-height: 230px; }
.carousel-track,.carousel-slide { position: absolute; inset: 0; }
.carousel-slide { opacity: 0; visibility: hidden; transition: opacity .55s ease, visibility .55s ease; }
.carousel-slide.active { opacity: 1; visibility: visible; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; background: var(--soft); }
.carousel-arrow { position: absolute; top: 50%; z-index: 4; width: clamp(40px,4vw,54px); height: clamp(40px,4vw,54px); border: 1px solid rgba(255,255,255,.9); border-radius: 50%; background: rgba(255,255,255,.88); color: var(--deep); box-shadow: 0 8px 22px rgba(7,58,104,.16); transform: translateY(-50%); cursor: pointer; font-size: 24px; }
.carousel-arrow:hover { background: #fff; }
.carousel-arrow.prev { left: clamp(12px,2vw,26px); }
.carousel-arrow.next { right: clamp(12px,2vw,26px); }
.carousel-dots { position: absolute; z-index: 5; left: 50%; bottom: 18px; display: flex; gap: 8px; transform: translateX(-50%); }
.carousel-dot { width: 10px; height: 10px; border: 0; border-radius: 999px; background: rgba(255,255,255,.7); box-shadow: 0 1px 6px rgba(7,58,104,.22); cursor: pointer; transition: width .2s ease, background .2s ease; }
.carousel-dot.active { width: 28px; background: var(--primary); }
.intro-panel { display: grid; grid-template-columns: minmax(0,1.15fr) minmax(280px,.85fr); gap: 28px; padding: clamp(28px,4vw,52px); border-radius: var(--radius-lg); background: linear-gradient(135deg,#fff 0%,#E8F7FF 100%); border: 1px solid var(--border); box-shadow: var(--shadow-soft); }
.intro-stats { display: grid; grid-template-columns: repeat(2,1fr); gap: 14px; }
.stat-card { padding: 20px; border-radius: 18px; background: rgba(255,255,255,.86); border: 1px solid var(--border); }
.stat-card strong { display: block; color: var(--primary); font-size: 23px; }
.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 { min-width: 0; padding: clamp(22px,2.5vw,32px); border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); box-shadow: var(--shadow-soft); transition: transform .2s ease, box-shadow .2s ease; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.card p { color: var(--muted); }
.text-link { display: inline-flex; align-items: center; gap: 6px; color: var(--accent); font-weight: 800; }
.text-link::after { content: "→"; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(4px); }
.split { display: grid; grid-template-columns: minmax(0,1fr) minmax(320px,.9fr); gap: clamp(28px,5vw,70px); align-items: center; }
.split.reverse .media-card { order: -1; }
.feature-list { display: grid; gap: 14px; margin: 24px 0; }
.feature-item { display: grid; grid-template-columns: 42px minmax(0,1fr); gap: 14px; align-items: start; padding: 16px; border-radius: 16px; background: #fff; border: 1px solid var(--border); }
.feature-index { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px; border-radius: 13px; background: var(--soft); color: var(--accent); font-weight: 900; }
.notice-box { padding: 24px 26px; border-left: 4px solid var(--primary); border-radius: 0 18px 18px 0; background: #fff; box-shadow: var(--shadow-soft); }
.notice-box strong { color: var(--deep); }
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px; }
.step { position: relative; padding: 28px; border: 1px solid var(--border); border-radius: var(--radius-md); background: #fff; }
.step::before { counter-increment: step; content: counter(step, decimal-leading-zero); display: inline-flex; margin-bottom: 16px; color: var(--primary); font-size: 28px; font-weight: 900; }
.review-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px; }
.review { padding: 25px; border: 1px solid var(--border); border-radius: var(--radius-md); background: #fff; box-shadow: var(--shadow-soft); }
.review p { color: var(--muted); }
.review strong { color: var(--deep); }
.review small { display: block; margin-top: 6px; color: var(--primary); font-weight: 700; }
.faq-list { display: grid; gap: 12px; }
.faq-item { border: 1px solid var(--border); border-radius: 16px; background: #fff; overflow: hidden; }
.faq-item button { width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 18px; padding: 20px 22px; border: 0; background: transparent; color: var(--deep); font-weight: 800; text-align: left; cursor: pointer; }
.faq-item button::after { content: "+"; flex: 0 0 auto; color: var(--primary); font-size: 24px; }
.faq-item.open button::after { content: "−"; }
.faq-answer { display: none; padding: 0 22px 22px; color: var(--muted); }
.faq-item.open .faq-answer { display: block; }
.compliance { padding: clamp(28px,4vw,44px); border-radius: var(--radius-lg); background: linear-gradient(135deg,#073A68,#155A9D); color: #EAF8FF; }
.compliance h2,.compliance h3 { color: #fff; }
.compliance-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 18px; margin-top: 24px; }
.compliance-item { padding: 18px; border: 1px solid rgba(255,255,255,.16); border-radius: 16px; background: rgba(255,255,255,.08); }
.list-clean { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.list-clean li { position: relative; padding-left: 24px; color: var(--muted); }
.list-clean li::before { content: ""; position: absolute; left: 0; top: .72em; width: 9px; height: 9px; border-radius: 50%; background: linear-gradient(135deg,#35D7FF,#1688D8); }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 18px; background: #fff; }
table { width: 100%; border-collapse: collapse; min-width: 680px; }
th,td { padding: 16px 18px; border-bottom: 1px solid var(--border); text-align: left; }
th { color: var(--deep); background: var(--soft); }
.site-footer { background: #073A68; color: #EAF8FF; }
.footer-inner { width: var(--container); margin: 0 auto; padding: 58px 0 34px; display: grid; grid-template-columns: minmax(260px,.8fr) minmax(0,1.2fr); gap: clamp(34px,6vw,90px); }
.footer-brand strong { display: block; color: #fff; font-size: 30px; margin-bottom: 10px; }
.footer-brand p { max-width: 480px; color: rgba(234,248,255,.78); }
.footer-links { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.footer-links h2 { color: #fff; font-size: 17px; margin-bottom: 12px; }
.footer-links a { display: block; width: fit-content; margin: 8px 0; color: rgba(234,248,255,.78); }
.footer-links a:hover { color: #fff; }
.footer-notice { width: var(--container); margin: 0 auto; padding: 24px 0 34px; border-top: 1px solid rgba(234,248,255,.13); color: rgba(234,248,255,.7); font-size: 14px; }
.footer-notice p { margin: 4px 0; }
@media (max-width: 1180px) {
  .desktop-nav { display: none; }
  .header-inner { min-height: 72px; }
  .header-actions { margin-left: auto; }
  .menu-toggle { display: inline-flex; }
  .card-grid.four { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 900px) {
  .page-hero .hero-grid,.intro-panel,.split { grid-template-columns: 1fr; }
  .split.reverse .media-card { order: 0; }
  .card-grid,.steps,.review-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .compliance-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .footer-inner { grid-template-columns: 1fr; }
  .carousel { aspect-ratio: 16/7.6; }
}
@media (max-width: 640px) {
  :root { --container: min(100% - 24px, 1360px); }
  .site-header .main-btn { min-height: 40px; padding: 0 18px; }
  .header-inner { gap: 8px; }
  .brand-logo img { width: 116px; }
  .section { padding: 52px 0; }
  .page-hero { padding-top: 48px; }
  .card-grid,.card-grid.four,.steps,.review-grid,.compliance-grid,.intro-stats,.footer-links { grid-template-columns: 1fr; }
  .carousel { min-height: 210px; aspect-ratio: 4/3; border-radius: 20px; }
  .carousel-slide img { object-fit: contain; }
  .carousel-arrow { width: 40px; height: 40px; }
  .mobile-nav { grid-template-columns: 1fr 1fr; }
  .hero-actions { align-items: stretch; }
  .hero-actions a { flex: 1 1 150px; }
}
@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}