:root {
  --bg: #F4FBFF;
  --surface: #FFFFFF;
  --surface-soft: #E8F7FF;
  --primary: #10AEEA;
  --primary-deep: #155A9D;
  --text: #24384A;
  --muted: #60758A;
  --footer: #073A68;
  --line: #D5ECF7;
  --shadow: 0 18px 50px rgba(21, 90, 157, .10);
  --radius: 22px;
  --container: 1200px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; color: var(--text); background: var(--bg); font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif; line-height: 1.75; overflow-x: hidden; }
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }
.skip-link { position: fixed; top: -100px; left: 12px; z-index: 2000; padding: 10px 16px; color: #fff; background: var(--primary-deep); border-radius: 10px; }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,.96); border-bottom: 1px solid rgba(213,236,247,.9); backdrop-filter: blur(16px); }
.header-inner { width: min(var(--container), calc(100% - 32px)); min-height: 76px; margin: 0 auto; display: flex; align-items: center; gap: 24px; }
.brand-logo { flex: 0 0 auto; width: 148px; }
.brand-logo img, .drawer-logo img, .footer-brand img { width: 100%; height: auto; object-fit: contain; }
.desktop-nav { min-width: 0; flex: 1; display: flex; align-items: center; justify-content: center; gap: clamp(10px, 1.05vw, 20px); white-space: nowrap; }
.desktop-nav a { position: relative; padding: 26px 0 22px; color: #38536B; font-size: 14px; font-weight: 700; }
.desktop-nav a::after { content: ""; position: absolute; left: 50%; bottom: 15px; width: 0; height: 3px; border-radius: 20px; background: var(--primary); transform: translateX(-50%); transition: width .2s ease; }
.desktop-nav a:hover, .desktop-nav a.active { color: var(--primary-deep); }
.desktop-nav a:hover::after, .desktop-nav a.active::after { width: 22px; }
.header-actions { margin-left: auto; display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.main-btn, .secondary-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 24px; border-radius: 999px; font-weight: 800; transition: transform .2s ease, box-shadow .2s ease; }
.main-btn { color: #fff; background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%); box-shadow: 0 10px 28px rgba(22,136,216,.26); }
.secondary-btn { color: var(--primary-deep); background: #fff; border: 1px solid var(--line); }
.main-btn:hover, .secondary-btn:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(21,90,157,.18); }
.menu-toggle { width: 44px; height: 44px; display: none; border: 0; border-radius: 14px; background: var(--surface-soft); cursor: pointer; }
.menu-toggle span { width: 20px; height: 2px; margin: 4px auto; display: block; background: var(--primary-deep); border-radius: 2px; }
.drawer-backdrop { position: fixed; inset: 0; z-index: 1200; opacity: 0; background: rgba(7,58,104,.48); transition: opacity .22s ease; }
.drawer-backdrop.show { opacity: 1; }
.mobile-drawer { position: fixed; top: 0; right: 0; z-index: 1300; width: min(360px, 88vw); height: 100dvh; padding: 20px; background: #fff; transform: translateX(105%); transition: transform .24s ease; box-shadow: -20px 0 60px rgba(7,58,104,.18); overflow-y: auto; }
.mobile-drawer.open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.drawer-logo { width: 142px; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 50%; color: var(--primary-deep); background: var(--surface-soft); font-size: 28px; line-height: 1; cursor: pointer; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 18px 0; }
.drawer-nav a { padding: 11px 12px; color: var(--primary-deep); background: #F7FCFF; border: 1px solid #E4F3FA; border-radius: 12px; font-size: 14px; font-weight: 700; }
.drawer-register { width: 100%; }
main { min-height: 60vh; }
.container { width: min(var(--container), calc(100% - 32px)); margin-inline: auto; }
.section { padding: 76px 0; }
.section-tight { padding: 44px 0; }
.section-soft { background: var(--surface-soft); }
.section-white { background: var(--surface); }
.section-head { max-width: 760px; margin-bottom: 30px; }
.section-head.center { margin-inline: auto; text-align: center; }
.eyebrow { display: inline-flex; margin-bottom: 10px; color: var(--primary); font-size: 13px; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
h1, h2, h3 { margin-top: 0; color: var(--primary-deep); line-height: 1.25; }
h1 { margin-bottom: 18px; font-size: clamp(34px, 5vw, 62px); letter-spacing: -.03em; }
h2 { margin-bottom: 14px; font-size: clamp(26px, 3.4vw, 40px); }
h3 { margin-bottom: 10px; font-size: 20px; }
p { margin-top: 0; }
.lead { max-width: 790px; color: #49677F; font-size: clamp(17px, 2vw, 20px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.page-hero { padding: 72px 0 58px; background: radial-gradient(circle at 90% 10%, rgba(53,215,255,.25), transparent 30%), linear-gradient(180deg, #fff 0%, #F4FBFF 100%); }
.page-hero-grid { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(300px, .88fr); gap: 54px; align-items: center; }
.hero-media, .media-card { overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: 28px; box-shadow: var(--shadow); }
.hero-media img, .media-card img { width: 100%; height: auto; max-height: 470px; object-fit: contain; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0 0; padding: 0; list-style: none; }
.hero-points li { padding: 8px 13px; color: var(--primary-deep); background: rgba(232,247,255,.9); border: 1px solid #D2EDFA; border-radius: 999px; font-size: 14px; font-weight: 700; }
.home-carousel { position: relative; width: 100%; overflow: hidden; background: #DFF4FF; }
.carousel-track { display: flex; transition: transform .55s ease; will-change: transform; }
.carousel-slide { flex: 0 0 100%; min-width: 100%; aspect-ratio: 16 / 5.4; display: grid; place-items: center; background: #E7F7FF; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; }
.carousel-arrow { position: absolute; top: 50%; z-index: 4; width: 46px; height: 46px; border: 1px solid rgba(255,255,255,.8); border-radius: 50%; color: #fff; background: rgba(7,58,104,.46); font-size: 30px; line-height: 1; cursor: pointer; transform: translateY(-50%); }
.carousel-arrow:hover { background: rgba(7,58,104,.72); }
.carousel-prev { left: 22px; }
.carousel-next { right: 22px; }
.carousel-dots { position: absolute; left: 50%; bottom: 16px; z-index: 5; display: flex; gap: 9px; transform: translateX(-50%); }
.carousel-dot { width: 9px; height: 9px; padding: 0; border: 1px solid rgba(255,255,255,.9); border-radius: 50%; background: rgba(7,58,104,.35); cursor: pointer; transition: width .2s ease, border-radius .2s ease; }
.carousel-dot.active { width: 28px; border-radius: 10px; background: #fff; }
.intro-panel { margin-top: -1px; padding: 48px 0; background: #fff; border-bottom: 1px solid var(--line); }
.intro-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; align-items: center; }
.quick-scroll { display: flex; gap: 12px; padding: 8px 2px 12px; overflow-x: auto; scrollbar-width: thin; }
.quick-scroll a { flex: 0 0 auto; padding: 12px 18px; color: var(--primary-deep); background: #fff; border: 1px solid var(--line); border-radius: 999px; font-weight: 800; box-shadow: 0 8px 24px rgba(21,90,157,.07); }
.quick-scroll a:hover { color: #fff; background: var(--primary); border-color: var(--primary); }
.grid-2, .grid-3, .grid-4 { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card { height: 100%; padding: 26px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 12px 34px rgba(21,90,157,.07); }
.card p:last-child { margin-bottom: 0; }
.card-link { display: inline-flex; margin-top: 10px; color: var(--primary); font-weight: 800; }
.card-link:hover { color: var(--primary-deep); }
.metric-card { padding: 25px; background: linear-gradient(180deg, #fff, #F9FDFF); border: 1px solid var(--line); border-radius: 20px; }
.metric-card strong { display: block; margin-bottom: 8px; color: var(--primary); font-size: 18px; }
.feature-card { display: grid; grid-template-columns: 1.05fr .95fr; gap: 0; overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: 28px; box-shadow: var(--shadow); }
.feature-card.reverse .feature-copy { order: 2; }
.feature-card.reverse .feature-media { order: 1; }
.feature-copy { padding: clamp(28px, 5vw, 54px); display: flex; flex-direction: column; justify-content: center; }
.feature-media { min-height: 330px; display: grid; place-items: center; background: var(--surface-soft); }
.feature-media img { width: 100%; height: 100%; object-fit: contain; }
.stack { display: grid; gap: 24px; }
.category-card { overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: 22px; }
.category-card img { width: 100%; aspect-ratio: 16 / 10; object-fit: contain; background: #F6FCFF; }
.category-card .card-body { padding: 24px; }
.app-banner { display: grid; grid-template-columns: 1.1fr .9fr; gap: 30px; align-items: center; padding: 46px; overflow: hidden; background: linear-gradient(135deg, #E8F7FF 0%, #FFFFFF 62%, #D8F4FF 100%); border: 1px solid #CAEAF8; border-radius: 30px; box-shadow: var(--shadow); }
.app-banner img { width: 100%; max-height: 330px; object-fit: contain; }
.notice-box { padding: 26px; color: #173C5C; background: #E8F7FF; border-left: 5px solid var(--primary); border-radius: 16px; }
.notice-box strong { color: var(--primary-deep); }
.safety-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 28px; align-items: center; }
.safety-list { display: grid; gap: 12px; }
.safety-item { padding: 17px 18px; background: #fff; border: 1px solid var(--line); border-radius: 15px; }
.review-card { position: relative; padding-top: 52px; }
.review-card::before { content: "“"; position: absolute; top: 8px; left: 22px; color: #AEE8FA; font-family: Georgia, serif; font-size: 64px; line-height: 1; }
.review-meta { color: var(--primary); font-size: 14px; font-weight: 800; }
.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 22px 24px; background: #fff; border: 1px solid var(--line); border-radius: 17px; }
.faq-item summary { color: var(--primary-deep); font-weight: 900; cursor: pointer; }
.faq-item p { margin: 14px 0 0; color: #4E687E; }
.cta-panel { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 38px; color: #fff; background: linear-gradient(135deg, #0A6FAF, #10AEEA); border-radius: 28px; box-shadow: 0 20px 50px rgba(16,174,234,.22); }
.cta-panel h2, .cta-panel p { color: #fff; }
.cta-panel p { margin-bottom: 0; opacity: .9; }
.inline-links { display: flex; flex-wrap: wrap; gap: 10px 18px; }
.inline-links a { color: var(--primary-deep); font-weight: 800; }
.inline-links a:hover { color: var(--primary); }
.site-footer { color: #EAF8FF; background: var(--footer); }
.footer-inner { width: min(var(--container), calc(100% - 32px)); margin: 0 auto; padding: 58px 0 36px; display: grid; grid-template-columns: .9fr 1.1fr; gap: 64px; }
.footer-brand img { width: 156px; margin-bottom: 20px; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 480px; color: #CBE9F7; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.footer-links h2 { margin-bottom: 14px; color: #fff; font-size: 17px; }
.footer-links a { display: block; width: fit-content; margin: 8px 0; color: #CBE9F7; font-size: 14px; }
.footer-links a:hover { color: #fff; }
.footer-notice { width: min(var(--container), calc(100% - 32px)); margin: 0 auto; padding: 20px 0 30px; display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; border-top: 1px solid rgba(234,248,255,.16); }
.footer-notice p { margin: 0; color: #BBDDEA; font-size: 13px; }
.footer-notice p:first-child { max-width: 850px; }
@media (max-width: 1179px) {
  .desktop-nav { display: none; }
  .menu-toggle { display: block; }
}
@media (max-width: 900px) {
  .section { padding: 58px 0; }
  .page-hero-grid, .intro-grid, .app-banner, .safety-grid, .footer-inner { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-card, .feature-card.reverse { grid-template-columns: 1fr; }
  .feature-card.reverse .feature-copy, .feature-card.reverse .feature-media { order: initial; }
  .feature-media { min-height: 250px; }
  .footer-links { grid-template-columns: repeat(3, 1fr); }
  .footer-notice { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 640px) {
  .header-inner { min-height: 66px; width: min(100% - 22px, var(--container)); gap: 10px; }
  .brand-logo { width: 126px; }
  .main-btn, .secondary-btn { min-height: 42px; padding: 0 18px; font-size: 14px; }
  .menu-toggle { width: 42px; height: 42px; }
  .container { width: min(100% - 24px, var(--container)); }
  .page-hero { padding: 50px 0 42px; }
  .page-hero-grid { gap: 30px; }
  h1 { font-size: clamp(32px, 11vw, 45px); }
  h2 { font-size: 28px; }
  .carousel-slide { aspect-ratio: 16 / 8; }
  .carousel-arrow { width: 38px; height: 38px; font-size: 24px; }
  .carousel-prev { left: 10px; }
  .carousel-next { right: 10px; }
  .carousel-dots { bottom: 10px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .card { padding: 22px; }
  .app-banner { padding: 28px 22px; }
  .cta-panel { align-items: flex-start; flex-direction: column; padding: 28px 24px; }
  .footer-inner { gap: 36px; padding-top: 44px; }
  .footer-links { grid-template-columns: 1fr 1fr; }
  .drawer-nav { grid-template-columns: 1fr 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}