:root {
    --bg: #F4FBFF;
    --nav: #FFFFFF;
    --soft: #E8F7FF;
    --card: #FFFFFF;
    --primary: #10AEEA;
    --deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --line: rgba(21, 90, 157, .14);
    --shadow: 0 18px 50px rgba(13, 87, 145, .10);
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 320px;
    color: var(--text);
    background: var(--bg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
.container { width: min(1180px, calc(100% - 32px)); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 2000; padding: 10px 14px; background: #fff; border-radius: 10px; }
.skip-link:focus { top: 16px; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,.96);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
}
.header-inner { min-height: 76px; display: flex; align-items: center; gap: 22px; }
.brand-logo { flex: 0 0 auto; width: 142px; }
.brand-logo img { width: 142px; max-height: 48px; object-fit: contain; }
.desktop-nav { margin-left: auto; display: flex; align-items: center; gap: 4px; min-width: 0; white-space: nowrap; }
.desktop-nav a { padding: 10px 9px; border-radius: 10px; color: var(--deep); font-size: 14px; font-weight: 650; }
.desktop-nav a:hover, .desktop-nav a.active { color: var(--primary); background: var(--soft); }
.header-actions { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.main-btn, .ghost-btn {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    padding: 0 22px;
    border-radius: 999px;
    font-weight: 750;
    transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn { color: #fff; background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%); box-shadow: 0 10px 24px rgba(22,136,216,.24); }
.main-btn:hover, .ghost-btn:hover { transform: translateY(-2px); }
.ghost-btn { color: var(--deep); background: #fff; border: 1px solid var(--line); }
.menu-toggle { display: none; width: 44px; height: 44px; border: 0; border-radius: 12px; background: var(--soft); padding: 10px; }
.menu-toggle span { display: block; height: 2px; margin: 5px 0; border-radius: 2px; background: var(--deep); }
.mobile-drawer { position: fixed; z-index: 1400; top: 0; right: 0; width: min(88vw, 390px); height: 100dvh; padding: 20px; background: #fff; transform: translateX(105%); transition: transform .25s ease; overflow-y: auto; }
.mobile-drawer.open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; color: var(--deep); font-size: 20px; }
.drawer-close { border: 0; background: var(--soft); color: var(--deep); width: 42px; height: 42px; border-radius: 50%; font-size: 28px; }
.mobile-drawer nav { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px; }
.mobile-drawer nav a { padding: 12px 14px; border-radius: 12px; background: var(--bg); color: var(--deep); font-weight: 650; }
.mobile-drawer nav a.active { background: var(--soft); color: var(--primary); }
.drawer-register { width: 100%; margin-top: 18px; }
.drawer-backdrop { position: fixed; inset: 0; z-index: 1300; background: rgba(2, 31, 56, .42); opacity: 0; transition: opacity .2s ease; }
.drawer-backdrop.show { opacity: 1; }
body.drawer-open { overflow: hidden; }
.section { padding: 78px 0; }
.section.compact { padding: 48px 0; }
.section-soft { background: var(--soft); }
.section-title { margin: 0 0 12px; color: var(--deep); font-size: clamp(28px, 4vw, 46px); line-height: 1.2; letter-spacing: -.02em; }
.section-lead { max-width: 790px; margin: 0; color: var(--muted); font-size: 17px; }
.eyebrow { display: inline-flex; margin-bottom: 12px; padding: 6px 12px; border-radius: 999px; color: var(--primary); background: rgba(16,174,234,.1); font-weight: 750; font-size: 13px; }
.page-hero { padding: 72px 0 48px; background: radial-gradient(circle at top right, rgba(53,215,255,.18), transparent 35%), linear-gradient(180deg, #fff 0%, var(--bg) 100%); }
.page-hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.page-hero h1 { margin: 0 0 18px; color: var(--deep); font-size: clamp(38px, 6vw, 68px); line-height: 1.08; }
.page-hero p { margin: 0; color: var(--muted); font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.hero-media { min-height: 320px; padding: 20px; border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow); display: grid; place-items: center; }
.hero-media img { width: 100%; max-height: 430px; object-fit: contain; }
.carousel { position: relative; overflow: hidden; background: #dff4ff; }
.carousel-track { display: flex; transition: transform .55s ease; }
.carousel-slide { min-width: 100%; }
.carousel-slide img { width: 100%; height: clamp(260px, 43vw, 610px); object-fit: contain; background: #dff4ff; }
.carousel-arrow { position: absolute; top: 50%; z-index: 3; transform: translateY(-50%); width: 46px; height: 46px; border: 0; border-radius: 50%; color: var(--deep); background: rgba(255,255,255,.88); box-shadow: 0 10px 24px rgba(0,0,0,.12); font-size: 28px; }
.carousel-arrow.prev { left: 20px; }
.carousel-arrow.next { right: 20px; }
.carousel-dots { position: absolute; left: 50%; bottom: 18px; z-index: 3; display: flex; gap: 8px; transform: translateX(-50%); }
.carousel-dot { width: 10px; height: 10px; padding: 0; border: 0; border-radius: 50%; background: rgba(255,255,255,.62); box-shadow: 0 0 0 1px rgba(21,90,157,.2); }
.carousel-dot.active { width: 28px; border-radius: 999px; background: #fff; }
.intro-card { padding: 38px; border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow); }
.quick-scroll { display: flex; gap: 12px; padding: 6px 0 10px; overflow-x: auto; scrollbar-width: thin; }
.quick-pill { flex: 0 0 auto; padding: 12px 18px; border: 1px solid var(--line); border-radius: 999px; background: #fff; color: var(--deep); font-weight: 700; }
.quick-pill:hover { color: var(--primary); border-color: rgba(16,174,234,.45); }
.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; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--card); box-shadow: 0 12px 34px rgba(13,87,145,.06); }
.card h2, .card h3 { margin-top: 0; color: var(--deep); line-height: 1.35; }
.card p:last-child { margin-bottom: 0; }
.card-link { display: inline-flex; margin-top: 8px; color: var(--primary); font-weight: 750; }
.media-card { overflow: hidden; padding: 0; }
.media-card .media-wrap { min-height: 230px; padding: 18px; display: grid; place-items: center; background: var(--soft); }
.media-card img { width: 100%; max-height: 320px; object-fit: contain; }
.media-card .card-body { padding: 26px; }
.feature-split { display: grid; grid-template-columns: .92fr 1.08fr; gap: 34px; align-items: center; }
.feature-split.reverse { grid-template-columns: 1.08fr .92fr; }
.feature-split.reverse .feature-media { order: 2; }
.feature-media { padding: 22px; border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow); }
.feature-media img { width: 100%; max-height: 420px; object-fit: contain; }
.feature-copy { padding: 18px 0; }
.feature-copy h2 { margin: 0 0 14px; color: var(--deep); font-size: clamp(28px, 4vw, 44px); line-height: 1.2; }
.list-clean { list-style: none; padding: 0; margin: 20px 0 0; display: grid; gap: 12px; }
.list-clean li { position: relative; padding-left: 26px; color: var(--text); }
.list-clean li::before { content: ''; position: absolute; left: 0; top: .72em; width: 9px; height: 9px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 0 5px rgba(16,174,234,.1); }
.stat-card { padding: 24px; border-radius: var(--radius-md); background: linear-gradient(180deg, #fff 0%, #f8fdff 100%); border: 1px solid var(--line); }
.stat-card strong { display: block; margin-bottom: 8px; color: var(--primary); font-size: 21px; }
.banner { display: grid; grid-template-columns: 1.2fr .8fr; gap: 28px; align-items: center; padding: 38px; border-radius: var(--radius-lg); background: linear-gradient(135deg, #e4f9ff 0%, #fff 58%, #dff2ff 100%); box-shadow: var(--shadow); }
.banner img { width: 100%; max-height: 300px; object-fit: contain; }
.notice { padding: 22px 24px; border-left: 4px solid var(--primary); border-radius: 14px; background: #fff; box-shadow: 0 12px 32px rgba(13,87,145,.06); }
.review-card { position: relative; padding: 26px; border-radius: var(--radius-md); background: #fff; border: 1px solid var(--line); }
.review-card::before { content: '“'; position: absolute; right: 20px; top: 4px; color: rgba(16,174,234,.18); font: 700 72px/1 Georgia, serif; }
.review-card strong { display: block; margin-bottom: 8px; color: var(--deep); }
.faq-list { display: grid; gap: 14px; margin-top: 28px; }
.faq-item { border: 1px solid var(--line); border-radius: 16px; background: #fff; overflow: hidden; }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 22px; border: 0; background: #fff; color: var(--deep); text-align: left; font-weight: 750; }
.faq-question::after { content: '+'; font-size: 24px; }
.faq-question[aria-expanded="true"]::after { content: '−'; }
.faq-answer { padding: 0 22px 22px; color: var(--muted); }
.compliance-box { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 14px; }
.compliance-box article { padding: 20px; border-radius: 16px; background: #fff; border: 1px solid var(--line); }
.compliance-box h3 { margin: 0 0 8px; color: var(--deep); font-size: 17px; }
.site-footer { padding: 58px 0 24px; color: var(--footer-text); background: var(--footer); }
.footer-grid { display: grid; grid-template-columns: 1.3fr .8fr .8fr; gap: 40px; }
.site-footer h2 { margin-top: 0; color: #fff; font-size: 20px; }
.site-footer p { color: rgba(234,248,255,.82); }
.footer-links { display: grid; gap: 9px; }
.footer-links a { color: rgba(234,248,255,.84); }
.footer-links a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 22px; margin-top: 38px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.16); }
.footer-bottom p { margin: 0; font-size: 13px; }
@media (max-width: 1179px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: inline-block; }
    .header-actions { margin-left: auto; }
}
@media (max-width: 900px) {
    .section { padding: 58px 0; }
    .page-hero-grid, .feature-split, .feature-split.reverse, .banner { grid-template-columns: 1fr; }
    .feature-split.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-box { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid section:first-child { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
    .container { width: min(100% - 22px, 1180px); }
    .header-inner { min-height: 66px; gap: 12px; }
    .brand-logo, .brand-logo img { width: 116px; }
    .main-btn { min-height: 40px; padding: 0 17px; }
    .menu-toggle { width: 40px; height: 40px; }
    .carousel-slide img { height: 250px; }
    .carousel-arrow { width: 40px; height: 40px; }
    .carousel-arrow.prev { left: 10px; }
    .carousel-arrow.next { right: 10px; }
    .page-hero { padding: 48px 0 32px; }
    .page-hero-grid { gap: 28px; }
    .hero-media { min-height: 220px; }
    .grid-2, .grid-3, .grid-4, .compliance-box { grid-template-columns: 1fr; }
    .intro-card, .banner { padding: 26px 20px; }
    .card, .review-card { padding: 22px; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-grid section:first-child { grid-column: auto; }
    .footer-bottom { flex-direction: column; }
}