@charset "UTF-8";
:root {
  --bg: #F4FBFF;
  --surface: #FFFFFF;
  --surface-soft: #E8F7FF;
  --primary: #10AEEA;
  --primary-deep: #1688D8;
  --heading: #155A9D;
  --text: #24384A;
  --muted: #60758A;
  --border: rgba(16, 174, 234, 0.18);
  --shadow: 0 18px 50px rgba(21, 90, 157, 0.10);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --header-h: 78px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; overflow-x: hidden; background: var(--bg); color: var(--text); font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, sans-serif; line-height: 1.75; }
body.drawer-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 2000; padding: 10px 16px; border-radius: 10px; background: #073A68; color: #fff; transition: top .2s; }
.skip-link:focus { top: 12px; }
.site-header { position: fixed; inset: 0 0 auto 0; z-index: 1000; height: var(--header-h); background: rgba(255,255,255,.96); border-bottom: 1px solid var(--border); backdrop-filter: blur(16px); }
.header-inner { width: min(calc(100% - 32px), 1360px); height: 100%; margin: 0 auto; display: flex; align-items: center; gap: clamp(12px, 1.8vw, 28px); }
.brand-logo { flex: 0 0 auto; width: clamp(112px, 10vw, 150px); }
.brand-logo img { width: 100%; height: 46px; object-fit: contain; }
.desktop-nav { min-width: 0; flex: 1; display: flex; align-items: center; justify-content: center; gap: clamp(8px, .9vw, 16px); }
.desktop-nav a { position: relative; white-space: nowrap; font-size: clamp(12px, .82vw, 14px); color: #3B5D75; font-weight: 700; padding: 9px 0; transition: color .2s; }
.desktop-nav a:hover, .desktop-nav a.active { color: var(--primary-deep); }
.desktop-nav a.active::after { content: ""; position: absolute; left: 18%; right: 18%; bottom: 1px; height: 3px; border-radius: 4px; background: linear-gradient(135deg, #35D7FF, #1688D8); }
.header-actions { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.main-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 23px; border-radius: 999px; background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%); color: #fff; font-weight: 800; box-shadow: 0 10px 24px rgba(22,136,216,.22); transition: transform .2s, box-shadow .2s; white-space: nowrap; }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(22,136,216,.30); }
.menu-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--border); border-radius: 13px; background: var(--surface-soft); padding: 10px; }
.menu-toggle span { display: block; width: 100%; height: 2px; margin: 5px 0; background: var(--heading); border-radius: 2px; }
.drawer-backdrop { position: fixed; inset: 0; z-index: 1090; background: rgba(7,58,104,.38); opacity: 0; visibility: hidden; transition: .25s; }
.mobile-drawer { position: fixed; top: 0; right: 0; z-index: 1100; width: min(88vw, 390px); height: 100dvh; padding: 20px; overflow-y: auto; background: #fff; transform: translateX(102%); transition: transform .28s ease; box-shadow: -18px 0 60px rgba(7,58,104,.18); }
.drawer-open .drawer-backdrop { opacity: 1; visibility: visible; }
.drawer-open .mobile-drawer { transform: translateX(0); }
.drawer-top { display: flex; align-items: center; justify-content: space-between; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.drawer-logo { width: 132px; }
.drawer-logo img { height: 44px; object-fit: contain; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 50%; background: var(--surface-soft); color: var(--heading); font-size: 28px; line-height: 1; }
.mobile-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; margin: 20px 0; }
.mobile-nav a { padding: 11px 12px; border: 1px solid var(--border); border-radius: 12px; background: #F9FDFF; color: var(--heading); font-size: 14px; font-weight: 700; text-align: center; }
.drawer-register { width: 100%; }
main { padding-top: var(--header-h); }
.container { width: min(calc(100% - 32px), 1200px); margin-inline: auto; }
.section { padding: clamp(58px, 7vw, 96px) 0; }
.section.alt { background: var(--surface-soft); }
.section.compact { padding: clamp(40px, 5vw, 66px) 0; }
.section-head { max-width: 760px; margin: 0 auto 36px; text-align: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 10px; color: var(--primary-deep); font-size: 13px; font-weight: 800; letter-spacing: .12em; }
.eyebrow::before { content: ""; width: 28px; height: 3px; border-radius: 3px; background: linear-gradient(90deg, #35D7FF, #1688D8); }
h1, h2, h3 { margin-top: 0; color: var(--heading); line-height: 1.3; }
h1 { font-size: clamp(32px, 5vw, 58px); margin-bottom: 20px; letter-spacing: -.03em; }
h2 { font-size: clamp(26px, 3.4vw, 40px); margin-bottom: 14px; }
h3 { font-size: clamp(18px, 2vw, 23px); margin-bottom: 10px; }
p { margin-top: 0; }
.lead { font-size: clamp(17px, 1.7vw, 20px); color: var(--muted); }
.text-link { display: inline-flex; align-items: center; gap: 7px; color: var(--primary-deep); font-weight: 800; }
.text-link::after { content: "→"; transition: transform .2s; }
.text-link:hover::after { transform: translateX(4px); }
.page-hero { position: relative; overflow: hidden; padding: clamp(70px, 9vw, 116px) 0; background: linear-gradient(150deg, #E8F7FF 0%, #F9FDFF 55%, #DDF5FF 100%); }
.page-hero::before, .page-hero::after { content: ""; position: absolute; border-radius: 50%; filter: blur(2px); pointer-events: none; }
.page-hero::before { width: 340px; height: 340px; right: -120px; top: -130px; background: rgba(53,215,255,.18); }
.page-hero::after { width: 250px; height: 250px; left: -100px; bottom: -130px; background: rgba(22,136,216,.10); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr); gap: clamp(32px, 6vw, 76px); align-items: center; }
.hero-copy p { max-width: 720px; }
.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 rgba(22,136,216,.28); border-radius: 999px; background: #fff; color: var(--primary-deep); font-weight: 800; }
.hero-media { border-radius: var(--radius-lg); padding: 16px; background: rgba(255,255,255,.78); border: 1px solid rgba(255,255,255,.9); box-shadow: var(--shadow); }
.hero-media img { width: 100%; max-height: 430px; object-fit: contain; border-radius: 20px; background: #fff; }
.carousel-wrap { padding: 28px 0 0; }
.carousel { position: relative; overflow: hidden; width: min(calc(100% - 32px), 1360px); margin: 0 auto; aspect-ratio: 16 / 6.2; min-height: 270px; border-radius: clamp(18px, 2.5vw, 30px); background: #DFF5FF; box-shadow: var(--shadow); }
.carousel-track, .carousel-slide { position: absolute; inset: 0; }
.carousel-slide { opacity: 0; visibility: hidden; transition: opacity .6s ease; }
.carousel-slide.active { opacity: 1; visibility: visible; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; background: #E8F7FF; }
.carousel-arrow { position: absolute; top: 50%; z-index: 4; width: 46px; height: 46px; margin-top: -23px; border: 1px solid rgba(255,255,255,.8); border-radius: 50%; background: rgba(7,58,104,.50); color: #fff; font-size: 28px; line-height: 1; }
.carousel-arrow.prev { left: 18px; }
.carousel-arrow.next { right: 18px; }
.carousel-dots { position: absolute; z-index: 4; left: 50%; bottom: 16px; display: flex; gap: 8px; transform: translateX(-50%); }
.carousel-dot { width: 10px; height: 10px; padding: 0; border: 2px solid rgba(255,255,255,.92); border-radius: 50%; background: rgba(7,58,104,.28); }
.carousel-dot.active { width: 28px; border-radius: 99px; background: #fff; }
.grid { 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 { min-width: 0; padding: clamp(22px, 3vw, 30px); border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); box-shadow: 0 12px 34px rgba(21,90,157,.07); }
.card p:last-child { margin-bottom: 0; }
.card-tag { display: inline-block; margin-bottom: 14px; padding: 5px 10px; border-radius: 999px; background: var(--surface-soft); color: var(--primary-deep); font-size: 12px; font-weight: 800; }
.image-card { overflow: hidden; padding: 0; }
.image-card .media { aspect-ratio: 16 / 10; padding: 12px; background: #F6FCFF; }
.image-card .media img { width: 100%; height: 100%; object-fit: contain; border-radius: 14px; background: #fff; }
.image-card .card-body { padding: 24px; }
.split { display: grid; grid-template-columns: minmax(280px, .9fr) minmax(0, 1.1fr); gap: clamp(28px, 5vw, 64px); align-items: center; }
.split.reverse > :first-child { order: 2; }
.content-media { padding: 14px; border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); }
.content-media img { width: 100%; max-height: 440px; object-fit: contain; border-radius: 18px; background: #F8FDFF; }
.check-list { list-style: none; margin: 20px 0 0; padding: 0; display: grid; gap: 12px; }
.check-list li { position: relative; padding-left: 28px; color: #3C566A; }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 0; width: 20px; height: 20px; border-radius: 50%; background: var(--surface-soft); color: var(--primary-deep); font-size: 12px; font-weight: 900; text-align: center; line-height: 20px; }
.quick-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.quick-item { padding: 22px; border-radius: 18px; border: 1px solid var(--border); background: #fff; transition: transform .2s, box-shadow .2s; }
.quick-item:hover { transform: translateY(-4px); box-shadow: 0 14px 36px rgba(21,90,157,.10); }
.quick-item h3 { font-size: 19px; }
.quick-item p { color: var(--muted); font-size: 14px; }
.notice { padding: clamp(24px, 4vw, 38px); border: 1px solid rgba(22,136,216,.20); border-radius: var(--radius-md); background: linear-gradient(135deg, #FFFFFF, #E9F8FF); }
.notice strong { color: var(--heading); }
.reviews { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.review { position: relative; padding: 28px; border-radius: var(--radius-md); background: #fff; border: 1px solid var(--border); box-shadow: 0 10px 30px rgba(21,90,157,.06); }
.review::before { content: "“"; position: absolute; right: 20px; top: 2px; color: rgba(16,174,234,.16); font-size: 76px; font-family: Georgia, serif; line-height: 1; }
.review p { position: relative; color: #40586B; }
.review cite { color: var(--primary-deep); font-size: 14px; font-style: normal; font-weight: 800; }
.faq-list { max-width: 900px; margin: 0 auto; display: grid; gap: 12px; }
.faq-item { overflow: hidden; border: 1px solid var(--border); border-radius: 16px; background: #fff; }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 20px 22px; border: 0; background: transparent; color: var(--heading); text-align: left; font-weight: 800; }
.faq-question::after { content: "+"; flex: 0 0 auto; font-size: 24px; color: var(--primary-deep); }
.faq-question[aria-expanded="true"]::after { content: "−"; }
.faq-answer { display: none; padding: 0 22px 22px; color: var(--muted); }
.faq-item.open .faq-answer { display: block; }
.steps { counter-reset: step; display: grid; gap: 14px; }
.step { position: relative; padding: 22px 22px 22px 70px; border-radius: 16px; border: 1px solid var(--border); background: #fff; }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 20px; top: 20px; width: 34px; height: 34px; border-radius: 50%; background: linear-gradient(135deg, #35D7FF, #1688D8); color: #fff; font-weight: 900; text-align: center; line-height: 34px; }
.contact-form { display: grid; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form label { display: grid; gap: 7px; color: var(--heading); font-weight: 700; }
.contact-form input, .contact-form textarea, .contact-form select { width: 100%; border: 1px solid var(--border); border-radius: 12px; background: #fff; padding: 13px 14px; color: var(--text); outline: none; }
.contact-form textarea { min-height: 150px; resize: vertical; }
.contact-form input:focus, .contact-form textarea:focus, .contact-form select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(16,174,234,.10); }
.site-footer { background: #073A68; color: #EAF8FF; }
.footer-inner { width: min(calc(100% - 32px), 1200px); margin: 0 auto; padding: 64px 0 38px; display: grid; grid-template-columns: 1.35fr .75fr .75fr 1.15fr; gap: 34px; }
.footer-brand img { width: 150px; height: 48px; object-fit: contain; object-position: left center; filter: brightness(0) invert(1); margin-bottom: 18px; }
.footer-brand p, .footer-note p { color: rgba(234,248,255,.76); font-size: 14px; }
.footer-links h2, .footer-note h2 { color: #fff; font-size: 17px; margin-bottom: 14px; }
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links a { color: rgba(234,248,255,.78); font-size: 14px; }
.footer-links a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(234,248,255,.13); width: min(calc(100% - 32px), 1200px); margin: 0 auto; padding: 20px 0 30px; display: flex; justify-content: space-between; gap: 20px; color: rgba(234,248,255,.68); font-size: 13px; }
.footer-bottom p { margin: 0; }
.back-top { position: fixed; right: 22px; bottom: 22px; z-index: 800; width: 46px; height: 46px; border: 0; border-radius: 50%; background: linear-gradient(135deg, #35D7FF, #1688D8); color: #fff; font-size: 22px; box-shadow: 0 12px 26px rgba(22,136,216,.28); opacity: 0; visibility: hidden; transform: translateY(12px); transition: .2s; }
.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
@media (max-width: 1180px) {
  .desktop-nav { display: none; }
  .menu-toggle { display: block; }
  .brand-logo { margin-right: auto; }
}
@media (max-width: 900px) {
  :root { --header-h: 70px; }
  .hero-grid, .split { grid-template-columns: 1fr; }
  .hero-media { max-width: 680px; }
  .split.reverse > :first-child { order: 0; }
  .grid-4, .quick-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3, .reviews { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .carousel { aspect-ratio: 16 / 8; }
}
@media (max-width: 640px) {
  .header-inner, .container, .footer-inner, .footer-bottom { width: min(calc(100% - 24px), 1200px); }
  .brand-logo { width: 112px; }
  .brand-logo img { height: 40px; }
  .header-actions { gap: 8px; }
  .header-actions .main-btn { min-height: 40px; padding: 0 17px; font-size: 14px; }
  .menu-toggle { width: 40px; height: 40px; }
  .carousel-wrap { padding-top: 14px; }
  .carousel { width: calc(100% - 24px); min-height: 215px; aspect-ratio: 4 / 3; border-radius: 18px; }
  .carousel-arrow { width: 40px; height: 40px; margin-top: -20px; font-size: 24px; }
  .carousel-arrow.prev { left: 10px; }
  .carousel-arrow.next { right: 10px; }
  .grid-2, .grid-3, .grid-4, .quick-grid, .reviews, .form-row { grid-template-columns: 1fr; }
  .page-hero { padding: 60px 0; }
  .section { padding: 56px 0; }
  .section-head { text-align: left; margin-bottom: 28px; }
  .footer-inner { grid-template-columns: 1fr; padding-top: 48px; }
  .footer-bottom { flex-direction: column; gap: 6px; }
  .mobile-nav { grid-template-columns: 1fr 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}