:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --surface-soft: #E8F7FF;
    --primary: #10AEEA;
    --primary-deep: #1688D8;
    --heading: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --line: rgba(16, 174, 234, 0.18);
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --shadow: 0 18px 50px rgba(22, 136, 216, 0.12);
    --shadow-small: 0 10px 28px rgba(22, 136, 216, 0.09);
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 14px;
    --header-height: 74px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    overflow-x: hidden;
    background: var(--bg);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}
body.drawer-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
.skip-link {
    position: fixed;
    left: 16px;
    top: -80px;
    z-index: 9999;
    padding: 10px 16px;
    border-radius: 10px;
    background: var(--footer);
    color: #fff;
    transition: top .2s ease;
}
.skip-link:focus { top: 12px; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--header-height);
    background: rgba(255,255,255,.96);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(16px);
}
.header-inner {
    width: min(100% - 32px, 1360px);
    height: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: clamp(12px, 1.6vw, 24px);
}
.brand-logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.brand-logo img { width: clamp(104px, 8vw, 136px); height: 44px; object-fit: contain; }
.desktop-nav {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(7px, .85vw, 16px);
    overflow: hidden;
}
.desktop-nav a {
    white-space: nowrap;
    font-size: clamp(12px, .88vw, 15px);
    font-weight: 700;
    color: #35556F;
    padding: 9px 0;
    border-bottom: 2px solid transparent;
    transition: color .2s ease, border-color .2s ease;
}
.desktop-nav a:hover, .desktop-nav a.active { color: var(--primary-deep); border-bottom-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: 42px;
    padding: 10px 22px;
    border-radius: 999px;
    color: #fff;
    font-weight: 800;
    white-space: nowrap;
    background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    box-shadow: 0 10px 24px rgba(22, 136, 216, .22);
    transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(22, 136, 216, .28); }
.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--surface-soft);
}
.menu-toggle span { display: block; height: 2px; margin: 5px 0; border-radius: 2px; background: var(--primary-deep); }
.drawer-backdrop {
    position: fixed;
    inset: 0;
    z-index: 1090;
    background: rgba(7, 58, 104, .35);
    opacity: 0;
    visibility: hidden;
    transition: opacity .25s ease, visibility .25s ease;
}
.mobile-drawer {
    position: fixed;
    inset: 0 0 0 auto;
    z-index: 1100;
    width: min(86vw, 380px);
    padding: 18px;
    background: #fff;
    box-shadow: -18px 0 60px rgba(7, 58, 104, .18);
    transform: translateX(105%);
    transition: transform .28s ease;
    overflow-y: auto;
}
.drawer-open .drawer-backdrop { opacity: 1; visibility: visible; }
.drawer-open .mobile-drawer { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.drawer-head img { width: 126px; height: 42px; object-fit: contain; }
.drawer-close { width: 40px; height: 40px; border: 0; border-radius: 12px; background: var(--surface-soft); color: var(--primary-deep); font-size: 30px; line-height: 1; }
.mobile-drawer nav { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 18px 0; }
.mobile-drawer nav a { padding: 11px 12px; border-radius: 12px; color: #34536A; background: #F8FCFF; font-weight: 700; }
.mobile-drawer nav a.active, .mobile-drawer nav a:hover { color: var(--primary-deep); background: var(--surface-soft); }
.drawer-register { width: 100%; }
main { min-height: 70vh; }
.container { width: min(100% - 32px, 1180px); margin: 0 auto; }
.section { width: min(100% - 32px, 1180px); margin: 0 auto; padding: clamp(58px, 7vw, 92px) 0; }
.section + .section { padding-top: 0; }
.section-heading { max-width: 760px; margin-bottom: 30px; }
.section-heading.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-heading h2, .page-hero h1, .split-copy h2, .compliance-panel h2 { margin: 8px 0 12px; color: var(--heading); line-height: 1.25; letter-spacing: -.02em; }
.section-heading h2, .split-copy h2, .compliance-panel h2 { font-size: clamp(28px, 3.2vw, 44px); }
.page-hero h1 { font-size: clamp(36px, 5vw, 64px); }
.section-heading p, .page-hero p, .split-copy p { color: var(--muted); }
.eyebrow { display: inline-block; color: var(--primary-deep); font-size: 13px; font-weight: 900; letter-spacing: .14em; }
.page-hero {
    width: min(100% - 32px, 1180px);
    margin: 34px auto 0;
    padding: clamp(42px, 6vw, 72px);
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    background:
      radial-gradient(circle at 12% 16%, rgba(53,215,255,.24), transparent 30%),
      linear-gradient(145deg, #FFFFFF 0%, #EAF8FF 100%);
    box-shadow: var(--shadow);
}
.page-hero p { max-width: 780px; margin-bottom: 0; font-size: 17px; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; color: var(--muted); font-size: 14px; }
.breadcrumbs a { color: var(--primary-deep); }
.carousel-shell { width: min(100% - 32px, 1360px); margin: 24px auto 0; }
.carousel {
    position: relative;
    aspect-ratio: 16 / 6.6;
    min-height: 280px;
    overflow: hidden;
    border-radius: var(--radius-xl);
    background: var(--surface-soft);
    box-shadow: var(--shadow);
}
.carousel-slide { position: absolute; inset: 0; opacity: 0; pointer-events: none; transition: opacity .6s ease; }
.carousel-slide.active { opacity: 1; pointer-events: auto; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; background: var(--surface-soft); }
.carousel-control {
    position: absolute;
    top: 50%;
    z-index: 4;
    width: 46px;
    height: 46px;
    transform: translateY(-50%);
    border: 1px solid rgba(255,255,255,.8);
    border-radius: 50%;
    background: rgba(7, 58, 104, .45);
    color: #fff;
    font-size: 28px;
    line-height: 1;
    backdrop-filter: blur(6px);
}
.carousel-control.prev { left: 18px; }
.carousel-control.next { right: 18px; }
.carousel-dots { position: absolute; z-index: 4; left: 50%; bottom: 18px; display: flex; gap: 9px; transform: translateX(-50%); }
.carousel-dot { width: 10px; height: 10px; padding: 0; border: 1px solid #fff; border-radius: 50%; background: rgba(255,255,255,.55); }
.carousel-dot.active { width: 28px; border-radius: 999px; background: #fff; }
.intro-panel {
    width: min(100% - 32px, 1180px);
    margin: 42px auto 0;
    padding: clamp(32px, 5vw, 56px);
    border-radius: var(--radius-xl);
    background: #fff;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-small);
}
.intro-actions, .link-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.text-link { display: inline-flex; align-items: center; gap: 7px; color: var(--primary-deep); font-weight: 800; }
.text-link::after { content: '→'; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(4px); }
.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)); }
.info-card, .review-card, .faq-item, .stat-card {
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: #fff;
    box-shadow: var(--shadow-small);
}
.info-card { padding: 25px; }
.info-card h3 { margin: 0 0 8px; color: var(--heading); font-size: 20px; }
.info-card p { margin: 0 0 15px; color: var(--muted); }
.category-mark { width: 42px; height: 42px; margin-bottom: 18px; display: grid; place-items: center; border-radius: 13px; background: var(--surface-soft); color: var(--primary-deep); font-weight: 900; }
.split-section {
    width: min(100% - 32px, 1180px);
    margin: 0 auto;
    padding: clamp(58px, 7vw, 92px) 0;
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr);
    gap: clamp(28px, 5vw, 62px);
    align-items: center;
}
.split-section.reverse .split-media { order: -1; }
.split-media {
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    background: var(--surface-soft);
    box-shadow: var(--shadow);
}
.split-media img { width: 100%; aspect-ratio: 4 / 3; object-fit: contain; }
.list-check { list-style: none; margin: 22px 0 0; padding: 0; display: grid; gap: 11px; }
.list-check li { position: relative; padding-left: 28px; color: #425E73; }
.list-check li::before { content: '✓'; position: absolute; left: 0; top: 0; color: var(--primary-deep); font-weight: 900; }
.feature-band { background: linear-gradient(180deg, rgba(232,247,255,.7), rgba(244,251,255,0)); }
.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.review-card { padding: 24px; }
.review-card p { margin: 16px 0 0; color: #4E6578; }
.review-meta { display: flex; align-items: center; gap: 12px; color: var(--heading); }
.avatar { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 50%; background: var(--surface-soft); color: var(--primary-deep); font-weight: 900; }
.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 22px 24px; }
.faq-item h3 { margin: 0 0 9px; color: var(--heading); font-size: 18px; }
.faq-item p { margin: 0; color: var(--muted); }
.compliance-panel {
    width: min(100% - 32px, 1180px);
    margin: 0 auto clamp(64px, 8vw, 104px);
    padding: clamp(30px, 5vw, 50px);
    display: grid;
    grid-template-columns: minmax(240px, .8fr) minmax(0, 1.2fr);
    gap: 28px;
    align-items: center;
    border: 1px solid rgba(53,215,255,.38);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, #E7F9FF 0%, #FFFFFF 100%);
    box-shadow: var(--shadow-small);
}
.compliance-panel p { margin: 0; color: #4D687C; }
.compliance-links { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 10px; }
.compliance-links a { padding: 9px 14px; border-radius: 999px; background: #fff; border: 1px solid var(--line); color: var(--primary-deep); font-weight: 800; }
.notice-strip { width: min(100% - 32px, 1180px); margin: 0 auto; padding: 20px 24px; border-radius: 16px; background: #DFF6FF; color: #315C78; border: 1px solid var(--line); }
.meta-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.stat-card { padding: 22px; }
.stat-card strong { display: block; color: var(--primary-deep); font-size: 25px; }
.stat-card span { color: var(--muted); font-size: 14px; }
.site-footer { background: var(--footer); color: var(--footer-text); }
.footer-inner { width: min(100% - 32px, 1180px); margin: 0 auto; padding: 62px 0 36px; display: grid; grid-template-columns: 1.1fr 1.5fr; gap: 60px; }
.footer-brand img { width: 138px; height: 48px; object-fit: contain; }
.footer-brand p { max-width: 470px; color: rgba(234,248,255,.76); }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.footer-links h3 { margin: 0 0 12px; color: #fff; font-size: 16px; }
.footer-links a { display: block; margin: 8px 0; color: rgba(234,248,255,.76); font-size: 14px; }
.footer-links a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(234,248,255,.14); padding: 20px 16px 28px; text-align: center; color: rgba(234,248,255,.68); font-size: 13px; }
.footer-bottom p { margin: 5px auto; max-width: 1000px; }
@media (max-width: 1180px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: block; }
    .header-inner { justify-content: space-between; }
}
@media (max-width: 900px) {
    .card-grid, .card-grid.four, .review-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .split-section, .compliance-panel, .footer-inner { grid-template-columns: 1fr; }
    .split-section.reverse .split-media { order: 0; }
    .compliance-links { grid-column: auto; }
    .meta-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-inner { gap: 34px; }
}
@media (max-width: 640px) {
    :root { --header-height: 66px; }
    .header-inner, .section, .page-hero, .intro-panel, .split-section, .carousel-shell, .compliance-panel, .notice-strip, .footer-inner { width: min(100% - 24px, 1180px); }
    .brand-logo img { width: 104px; height: 38px; }
    .header-actions .main-btn { min-height: 38px; padding: 8px 16px; }
    .menu-toggle { width: 40px; height: 40px; }
    .carousel { min-height: 220px; aspect-ratio: 4 / 3; border-radius: 20px; }
    .carousel-control { width: 40px; height: 40px; }
    .carousel-control.prev { left: 10px; }
    .carousel-control.next { right: 10px; }
    .page-hero { margin-top: 20px; padding: 30px 24px; border-radius: 22px; }
    .card-grid, .card-grid.four, .review-grid, .footer-links, .meta-grid { grid-template-columns: 1fr; }
    .split-section { grid-template-columns: 1fr; }
    .section, .split-section { padding: 54px 0; }
    .mobile-drawer nav { grid-template-columns: 1fr 1fr; }
    .footer-inner { padding-top: 46px; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}