:root {
    --bg: #F4FBFF;
    --nav: #FFFFFF;
    --soft: #E8F7FF;
    --card: #FFFFFF;
    --primary: #10AEEA;
    --deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --footer: #073A68;
    --line: #D9EDF8;
    --shadow: 0 18px 48px rgba(21, 90, 157, .10);
    --radius: 22px;
    --gradient: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, sans-serif; line-height: 1.75; overflow-x: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
.skip-link { position: fixed; left: 12px; top: -70px; z-index: 1000; background: #fff; padding: 10px 16px; border-radius: 10px; box-shadow: var(--shadow); }
.skip-link:focus { top: 12px; }
.container { width: min(1180px, calc(100% - 32px)); margin-inline: auto; }
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
.header-inner { width: min(1380px, calc(100% - 28px)); min-height: 76px; margin: 0 auto; display: flex; align-items: center; gap: 20px; }
.brand-logo { flex: 0 0 auto; width: 132px; }
.brand-logo img { width: 132px; height: 48px; object-fit: contain; }
.desktop-nav { flex: 1 1 auto; display: flex; align-items: center; justify-content: center; gap: 6px; min-width: 0; }
.desktop-nav a { padding: 9px 10px; border-radius: 11px; color: var(--deep); font-size: 14px; font-weight: 700; white-space: nowrap; }
.desktop-nav a:hover, .desktop-nav a.active { color: #fff; background: var(--gradient); }
.main-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 22px; border-radius: 999px; background: var(--gradient); color: #fff; font-weight: 800; box-shadow: 0 10px 24px rgba(22,136,216,.24); transition: transform .2s ease, box-shadow .2s ease; }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(22,136,216,.3); }
.header-register { flex: 0 0 auto; }
.menu-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 12px; background: #fff; padding: 10px; }
.menu-toggle span { display: block; height: 2px; margin: 5px 0; background: var(--deep); border-radius: 2px; }
.mobile-drawer { position: fixed; inset: 0 auto 0 0; z-index: 301; width: min(360px, 88vw); background: #fff; transform: translateX(-103%); transition: transform .28s ease; box-shadow: 20px 0 50px rgba(7,58,104,.18); overflow-y: auto; }
.mobile-drawer.is-open { transform: translateX(0); }
.drawer-backdrop { position: fixed; inset: 0; z-index: 300; background: rgba(7,58,104,.42); }
.drawer-head { position: sticky; top: 0; display: flex; justify-content: space-between; align-items: center; padding: 20px; background: #fff; border-bottom: 1px solid var(--line); color: var(--deep); }
.drawer-close { width: 40px; height: 40px; border: 0; border-radius: 12px; background: var(--soft); color: var(--deep); font-size: 26px; }
.drawer-nav { padding: 12px 18px 30px; display: grid; gap: 5px; }
.drawer-nav a { padding: 13px 14px; border-radius: 12px; color: var(--deep); font-weight: 700; }
.drawer-nav a:hover { background: var(--soft); }
.drawer-open { overflow: hidden; }
.section { padding: 72px 0; }
.section-sm { padding: 48px 0; }
.section-head { max-width: 760px; margin-bottom: 30px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 10px; color: var(--primary); font-size: 14px; font-weight: 900; letter-spacing: .08em; }
.eyebrow::before { content: ""; width: 28px; height: 3px; border-radius: 99px; background: var(--gradient); }
h1, h2, h3 { margin: 0 0 14px; line-height: 1.3; color: var(--deep); }
h1 { font-size: clamp(34px, 5vw, 58px); }
h2 { font-size: clamp(26px, 3.4vw, 40px); }
h3 { font-size: 20px; }
p { margin: 0 0 16px; }
.lead { color: var(--muted); font-size: 18px; }
.hero-intro { padding: 52px 0 32px; }
.hero-intro-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 34px; align-items: center; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.secondary-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 20px; border-radius: 999px; color: var(--deep); background: #fff; border: 1px solid var(--line); font-weight: 800; }
.info-panel { padding: 28px; border-radius: var(--radius); background: linear-gradient(145deg, #fff, var(--soft)); border: 1px solid var(--line); box-shadow: var(--shadow); }
.info-panel ul { margin: 0; padding-left: 20px; }
.carousel { position: relative; width: min(1480px, 100%); margin: 0 auto; background: #EAF8FF; overflow: hidden; }
.carousel-stage { position: relative; aspect-ratio: 16 / 6.2; min-height: 270px; }
.carousel-slide { position: absolute; inset: 0; opacity: 0; pointer-events: none; transition: opacity .55s ease; display: grid; place-items: center; }
.carousel-slide.is-active { opacity: 1; pointer-events: auto; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; object-position: center; }
.carousel-arrow { position: absolute; top: 50%; z-index: 3; width: 46px; height: 46px; border: 0; border-radius: 50%; background: rgba(255,255,255,.9); color: var(--deep); font-size: 30px; line-height: 1; transform: translateY(-50%); box-shadow: 0 8px 22px rgba(7,58,104,.18); cursor: pointer; }
.carousel-prev { left: 18px; }
.carousel-next { right: 18px; }
.carousel-dots { position: absolute; left: 50%; bottom: 16px; z-index: 4; display: flex; gap: 9px; transform: translateX(-50%); }
.carousel-dot { width: 10px; height: 10px; padding: 0; border: 2px solid #fff; border-radius: 50%; background: rgba(7,58,104,.35); cursor: pointer; }
.carousel-dot.is-active { width: 28px; border-radius: 99px; background: #fff; }
.quick-scroll { display: flex; gap: 12px; overflow-x: auto; padding: 4px 0 12px; scrollbar-width: thin; }
.quick-scroll a { flex: 0 0 auto; padding: 11px 18px; border: 1px solid var(--line); border-radius: 999px; background: #fff; color: var(--deep); font-weight: 800; box-shadow: 0 8px 20px rgba(21,90,157,.06); }
.quick-scroll a:hover { color: #fff; background: var(--gradient); }
.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 { padding: 26px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.card p:last-child { margin-bottom: 0; }
.card-link { display: inline-flex; margin-top: 8px; color: var(--primary); font-weight: 900; }
.metric-card { position: relative; overflow: hidden; min-height: 210px; }
.metric-card::after { content: ""; position: absolute; right: -34px; bottom: -34px; width: 110px; height: 110px; border-radius: 50%; background: var(--soft); }
.metric-index { display: inline-grid; place-items: center; width: 42px; height: 42px; margin-bottom: 18px; border-radius: 14px; background: var(--gradient); color: #fff; font-weight: 900; }
.feature-card { display: grid; grid-template-columns: 1.12fr .88fr; gap: 30px; align-items: center; padding: 32px; border-radius: 28px; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); }
.feature-card.reverse { grid-template-columns: .88fr 1.12fr; }
.feature-card.reverse .feature-media { order: 2; }
.feature-media { min-height: 290px; border-radius: 22px; background: var(--soft); display: grid; place-items: center; overflow: hidden; }
.feature-media img { width: 100%; height: 100%; max-height: 380px; object-fit: contain; }
.feature-list { margin: 18px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.feature-list li { position: relative; padding-left: 22px; color: var(--muted); }
.feature-list li::before { content: ""; position: absolute; left: 0; top: .72em; width: 9px; height: 9px; border-radius: 50%; background: var(--primary); }
.image-card { overflow: hidden; padding: 0; }
.image-card .image-wrap { aspect-ratio: 16 / 10; background: var(--soft); display: grid; place-items: center; }
.image-card img { width: 100%; height: 100%; object-fit: contain; }
.image-card .card-body { padding: 24px; }
.app-banner { display: grid; grid-template-columns: 1.1fr .9fr; gap: 30px; align-items: center; padding: 34px; border-radius: 30px; background: linear-gradient(135deg, #fff 0%, #DFF6FF 100%); border: 1px solid #BFEAFF; box-shadow: var(--shadow); overflow: hidden; }
.app-banner img { width: 100%; height: 330px; object-fit: contain; }
.notice { padding: 22px 24px; border-left: 5px solid var(--primary); border-radius: 16px; background: var(--soft); color: var(--deep); }
.testimonial { position: relative; }
.testimonial::before { content: "“"; position: absolute; top: 6px; right: 20px; color: var(--soft); font-size: 72px; font-family: serif; line-height: 1; }
.testimonial strong { display: block; margin-top: 14px; color: var(--primary); }
.faq-list { display: grid; gap: 12px; }
details { border: 1px solid var(--line); border-radius: 16px; background: #fff; overflow: hidden; }
summary { cursor: pointer; padding: 18px 22px; color: var(--deep); font-weight: 900; list-style: none; }
summary::-webkit-details-marker { display: none; }
details p { padding: 0 22px 20px; color: var(--muted); }
.compliance-band { background: var(--deep); color: #EAF8FF; }
.compliance-band h2, .compliance-band h3 { color: #fff; }
.compliance-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.compliance-item { padding: 22px; border: 1px solid rgba(255,255,255,.18); border-radius: 18px; background: rgba(255,255,255,.06); }
.page-hero { padding: 72px 0 44px; background: radial-gradient(circle at 85% 15%, #C7F1FF 0, transparent 28%), linear-gradient(180deg,#fff 0%,var(--bg) 100%); }
.page-hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 34px; align-items: center; }
.page-hero-media { min-height: 330px; display: grid; place-items: center; border-radius: 28px; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); overflow: hidden; }
.page-hero-media img { width: 100%; height: 100%; max-height: 390px; object-fit: contain; }
.breadcrumbs { display: flex; gap: 8px; flex-wrap: wrap; color: var(--muted); font-size: 14px; margin-bottom: 16px; }
.content-columns { display: grid; grid-template-columns: 1fr 320px; gap: 28px; align-items: start; }
.sticky-card { position: sticky; top: 104px; }
.step-list { counter-reset: step; display: grid; gap: 14px; }
.step { position: relative; padding: 20px 20px 20px 68px; border-radius: 17px; background: #fff; border: 1px solid var(--line); }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 18px; top: 18px; width: 34px; height: 34px; display: grid; place-items: center; border-radius: 12px; background: var(--gradient); color: #fff; font-weight: 900; }
.tag-list { display: flex; gap: 8px; flex-wrap: wrap; }
.tag { padding: 7px 12px; border-radius: 999px; background: var(--soft); color: var(--deep); font-weight: 800; font-size: 14px; }
.site-footer { background: var(--footer); color: #EAF8FF; padding: 58px 0 24px; }
.site-footer h2 { color: #fff; font-size: 20px; }
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr 1fr; gap: 34px; }
.footer-links { display: grid; gap: 8px; }
.site-footer a { color: #DDF5FF; }
.footer-bottom { margin-top: 34px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.16); display: flex; justify-content: space-between; gap: 16px; }
.footer-bottom div { display: flex; gap: 18px; flex-wrap: wrap; }
@media (max-width: 1179px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: block; }
    .header-inner { justify-content: space-between; }
    .brand-logo { margin-right: auto; }
}
@media (max-width: 900px) {
    .section { padding: 56px 0; }
    .hero-intro-grid, .page-hero-grid, .feature-card, .feature-card.reverse, .app-banner, .content-columns { grid-template-columns: 1fr; }
    .feature-card.reverse .feature-media { order: 0; }
    .grid-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .grid-3 { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .compliance-grid { grid-template-columns: repeat(2,1fr); }
    .sticky-card { position: static; }
    .carousel-stage { aspect-ratio: 16 / 8; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 620px) {
    .container { width: min(100% - 24px, 1180px); }
    .header-inner { width: calc(100% - 18px); min-height: 66px; gap: 10px; }
    .brand-logo { width: 104px; }
    .brand-logo img { width: 104px; height: 38px; }
    .header-register { min-height: 40px; padding: 0 17px; }
    .grid-2, .grid-3, .grid-4, .compliance-grid, .footer-grid { grid-template-columns: 1fr; }
    .carousel-stage { min-height: 210px; aspect-ratio: 4 / 3; }
    .carousel-arrow { width: 40px; height: 40px; }
    .carousel-prev { left: 8px; }
    .carousel-next { right: 8px; }
    .card, .feature-card, .app-banner { padding: 22px; border-radius: 20px; }
    .feature-media, .page-hero-media { min-height: 230px; }
    .app-banner img { height: 250px; }
    .footer-bottom { flex-direction: column; }
}