:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --soft: #E8F7FF;
    --primary: #10AEEA;
    --primary-strong: #1688D8;
    --heading: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(16, 174, 234, 0.18);
    --shadow: 0 18px 45px rgba(21, 90, 157, 0.10);
    --shadow-soft: 0 10px 28px rgba(21, 90, 157, 0.08);
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
    --container: min(100% - 32px, 1280px);
    --header-h: 76px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 0;
    overflow-x: hidden;
    background: var(--bg);
    color: var(--text);
    font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.75;
    padding-top: var(--header-h);
}
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
.skip-link {
    position: fixed;
    left: 16px;
    top: -80px;
    z-index: 9999;
    padding: 10px 14px;
    border-radius: 10px;
    background: #073A68;
    color: #fff;
    transition: top .2s ease;
}
.skip-link:focus { top: 12px; }
.site-header {
    position: fixed;
    inset: 0 0 auto;
    height: var(--header-h);
    z-index: 1000;
    background: rgba(255,255,255,.96);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 26px rgba(21, 90, 157, .08);
    backdrop-filter: blur(16px);
}
.header-shell {
    width: min(100% - 32px, 1360px);
    height: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: clamp(12px, 1.2vw, 20px);
    min-width: 0;
}
.brand-logo { flex: 0 0 auto; width: clamp(102px, 8vw, 132px); }
.brand-logo img { width: 100%; max-height: 46px; object-fit: contain; }
.desktop-nav {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(5px, .65vw, 12px);
    white-space: nowrap;
}
.desktop-nav a {
    flex: 0 0 auto;
    padding: 8px clamp(3px, .2vw, 6px);
    border-radius: 10px;
    color: #36546E;
    font-size: clamp(12px, .82vw, 14px);
    font-weight: 650;
    line-height: 1;
    transition: color .2s ease, background .2s ease;
}
.desktop-nav a:hover,
.desktop-nav a.active { color: var(--primary-strong); background: var(--soft); }
.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: 9px 22px;
    border: 0;
    border-radius: 999px;
    background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
    color: #fff;
    font-weight: 750;
    white-space: nowrap;
    box-shadow: 0 10px 24px rgba(22, 136, 216, .24);
    transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn:hover { transform: translateY(-1px); box-shadow: 0 14px 30px rgba(22, 136, 216, .30); }
.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: 13px;
    background: var(--surface);
    padding: 10px;
}
.menu-toggle span { display: block; height: 2px; margin: 5px 0; border-radius: 2px; background: var(--heading); }
.drawer-overlay {
    position: fixed;
    inset: 0;
    z-index: 1090;
    background: rgba(7, 58, 104, .42);
    opacity: 0;
    transition: opacity .22s ease;
}
.drawer-overlay.visible { opacity: 1; }
.mobile-drawer {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 1100;
    width: min(88vw, 380px);
    height: 100dvh;
    overflow-y: auto;
    padding: 22px;
    background: #fff;
    box-shadow: -20px 0 50px rgba(7, 58, 104, .18);
    transform: translateX(105%);
    transition: transform .25s ease;
}
.mobile-drawer.open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.drawer-logo { width: 120px; }
.drawer-close { width: 40px; height: 40px; border: 0; border-radius: 50%; background: var(--soft); color: var(--heading); font-size: 28px; line-height: 1; }
.mobile-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; padding: 20px 0; }
.mobile-nav a { padding: 11px 12px; border-radius: 12px; background: #F7FCFF; border: 1px solid var(--border); color: #36546E; font-weight: 650; text-align: center; }
.mobile-nav a.active { color: var(--primary-strong); background: var(--soft); }
.drawer-register { width: 100%; }

main { min-height: 60vh; }
.container { width: var(--container); margin-inline: auto; }
.section { padding: clamp(54px, 7vw, 96px) 0; }
.section.compact { padding: clamp(38px, 5vw, 68px) 0; }
.section-soft { background: linear-gradient(180deg, rgba(232,247,255,.78), rgba(244,251,255,.25)); }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 12px; color: var(--primary-strong); font-size: 14px; font-weight: 800; letter-spacing: .08em; }
.eyebrow::before { content: ""; width: 24px; height: 3px; border-radius: 3px; background: linear-gradient(90deg, #35D7FF, #1688D8); }
.section-heading { max-width: 800px; margin-bottom: 28px; }
.section-heading.center { margin-inline: auto; text-align: center; }
.section-heading.center .eyebrow { justify-content: center; }
h1, h2, h3 { margin: 0; color: var(--heading); line-height: 1.25; }
h1 { font-size: clamp(32px, 5vw, 56px); letter-spacing: -.03em; }
h2 { font-size: clamp(26px, 3.4vw, 40px); }
h3 { font-size: clamp(18px, 2vw, 24px); }
p { margin: 0; }
.lead { margin-top: 18px; color: var(--muted); font-size: clamp(16px, 1.5vw, 19px); line-height: 1.9; }
.text-link { display: inline-flex; align-items: center; gap: 7px; margin-top: 16px; color: var(--primary-strong); font-weight: 760; }
.text-link::after { content: "→"; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(3px); }
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.card-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.info-card, .review-card, .faq-item, .notice-card, .stat-card {
    min-width: 0;
    padding: clamp(20px, 2.5vw, 30px);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
    box-shadow: var(--shadow-soft);
}
.info-card h3, .notice-card h3 { margin-bottom: 10px; }
.info-card p, .notice-card p, .review-card p { color: var(--muted); }
.info-card .tag { display: inline-flex; margin-bottom: 14px; padding: 5px 10px; border-radius: 999px; background: var(--soft); color: var(--primary-strong); font-size: 13px; font-weight: 800; }
.media-split { display: grid; grid-template-columns: minmax(0, 1.06fr) minmax(320px, .94fr); align-items: center; gap: clamp(28px, 5vw, 66px); }
.media-split.reverse .media-copy { order: 2; }
.media-split.reverse .media-frame { order: 1; }
.media-copy > p + p { margin-top: 14px; }
.media-copy p { color: var(--muted); }
.media-frame { overflow: hidden; border-radius: var(--radius-lg); background: var(--soft); border: 1px solid var(--border); box-shadow: var(--shadow); }
.media-frame img { width: 100%; max-height: 520px; object-fit: contain; background: #fff; }
.page-hero { padding: clamp(62px, 8vw, 110px) 0 clamp(42px, 6vw, 78px); background: radial-gradient(circle at 85% 10%, rgba(53,215,255,.22), transparent 34%), linear-gradient(145deg, #F4FBFF, #EAF8FF); border-bottom: 1px solid var(--border); }
.page-hero .hero-shell { width: var(--container); margin: 0 auto; display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, .65fr); align-items: center; gap: 44px; }
.page-hero .hero-panel { padding: 26px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: rgba(255,255,255,.78); box-shadow: var(--shadow); }
.page-hero .hero-panel ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.page-hero .hero-panel li { display: flex; gap: 10px; color: #41627D; }
.page-hero .hero-panel li::before { content: "✓"; flex: 0 0 auto; color: var(--primary-strong); font-weight: 900; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; color: var(--muted); font-size: 14px; }
.breadcrumb a { color: var(--primary-strong); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.secondary-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: 9px 20px; border: 1px solid var(--border); border-radius: 999px; background: #fff; color: var(--primary-strong); font-weight: 750; }

.carousel-section { padding: 22px 0 0; }
.carousel { position: relative; width: min(100% - 32px, 1360px); margin: 0 auto; overflow: hidden; border: 1px solid var(--border); border-radius: clamp(18px, 2.5vw, 32px); background: #E8F7FF; box-shadow: var(--shadow); }
.carousel-track { display: flex; transition: transform .55s cubic-bezier(.22,.61,.36,1); }
.carousel-slide { flex: 0 0 100%; min-width: 0; }
.carousel-slide img { width: 100%; height: clamp(220px, 42vw, 600px); object-fit: contain; background: #E8F7FF; }
.carousel-arrow { position: absolute; top: 50%; z-index: 3; width: clamp(42px, 5vw, 54px); height: clamp(42px, 5vw, 54px); transform: translateY(-50%); border: 1px solid rgba(255,255,255,.72); border-radius: 50%; background: rgba(7,58,104,.48); color: #fff; font-size: 34px; line-height: 1; backdrop-filter: blur(8px); }
.carousel-arrow.prev { left: 16px; }
.carousel-arrow.next { right: 16px; }
.carousel-dots { position: absolute; left: 50%; bottom: 16px; z-index: 3; display: flex; gap: 8px; transform: translateX(-50%); }
.carousel-dot { width: 10px; height: 10px; padding: 0; border: 0; border-radius: 999px; background: rgba(255,255,255,.62); box-shadow: 0 0 0 1px rgba(7,58,104,.12); transition: width .2s ease, background .2s ease; }
.carousel-dot.active { width: 28px; background: #fff; }

.quick-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.quick-card { min-width: 0; padding: 22px; border: 1px solid var(--border); border-radius: 18px; background: #fff; box-shadow: var(--shadow-soft); }
.quick-card h3 { font-size: 20px; }
.quick-card p { margin-top: 9px; color: var(--muted); font-size: 14px; }
.feature-strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.feature-item { padding: 18px; border-radius: 16px; background: rgba(255,255,255,.82); border: 1px solid var(--border); }
.feature-item strong { display: block; color: var(--heading); font-size: 18px; }
.feature-item span { color: var(--muted); font-size: 14px; }
.review-card { position: relative; }
.review-card::before { content: "“"; position: absolute; right: 22px; top: 8px; color: rgba(16,174,234,.15); font-size: 64px; font-weight: 900; line-height: 1; }
.review-card strong { display: block; margin-top: 18px; color: var(--heading); }
.review-card span { color: var(--muted); font-size: 13px; }
.faq-list { display: grid; gap: 14px; }
.faq-item { box-shadow: none; }
.faq-item summary { cursor: pointer; color: var(--heading); font-weight: 780; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; float: right; color: var(--primary-strong); font-size: 22px; }
.faq-item[open] summary::after { content: "−"; }
.faq-item p { margin-top: 12px; color: var(--muted); }
.compliance-band { padding: 30px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: linear-gradient(135deg, #E8F7FF, #FFFFFF); box-shadow: var(--shadow-soft); }
.compliance-band h2 { margin-bottom: 12px; }
.compliance-band p + p { margin-top: 9px; }
.compliance-band p { color: #49677F; }
.pill-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.pill { padding: 7px 12px; border: 1px solid var(--border); border-radius: 999px; background: #fff; color: var(--primary-strong); font-weight: 700; font-size: 13px; }
.process-list { counter-reset: process; display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 18px; }
.process-item { counter-increment: process; padding: 24px; border-radius: 18px; background: #fff; border: 1px solid var(--border); }
.process-item::before { content: counter(process, decimal-leading-zero); display: inline-grid; place-items: center; width: 42px; height: 42px; margin-bottom: 14px; border-radius: 13px; background: var(--soft); color: var(--primary-strong); font-weight: 900; }
.process-item h3 { margin-bottom: 8px; }
.process-item p { color: var(--muted); }
.image-gallery { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.image-card { overflow: hidden; border-radius: var(--radius-md); background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow-soft); }
.image-card img { width: 100%; aspect-ratio: 16 / 10; object-fit: contain; background: #fff; }
.image-card .image-copy { padding: 18px; }
.image-card p { margin-top: 7px; color: var(--muted); }
.site-footer { margin-top: 24px; background: #073A68; color: #EAF8FF; }
.footer-shell { width: var(--container); margin: 0 auto; display: grid; grid-template-columns: 1.35fr .7fr .7fr 1fr; gap: 36px; padding: 58px 0 42px; }
.footer-brand a { display: inline-flex; padding: 8px 12px; border-radius: 14px; background: #fff; }
.footer-brand img { width: 132px; max-height: 48px; object-fit: contain; }
.footer-brand p, .footer-notice p { margin-top: 16px; color: rgba(234,248,255,.76); }
.footer-links h2, .footer-notice h2 { margin-bottom: 14px; color: #fff; font-size: 17px; }
.footer-links { display: grid; align-content: start; gap: 8px; }
.footer-links a { color: rgba(234,248,255,.8); }
.footer-links a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(234,248,255,.14); padding: 18px 16px; text-align: center; color: rgba(234,248,255,.7); font-size: 13px; }

@media (max-width: 1180px) {
    .desktop-nav { display: none; }
    .header-shell { justify-content: space-between; }
    .menu-toggle { display: block; }
}
@media (max-width: 980px) {
    .card-grid.four, .quick-grid, .feature-strip, .process-list { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .card-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .media-split, .page-hero .hero-shell { grid-template-columns: 1fr; }
    .media-split.reverse .media-copy, .media-split.reverse .media-frame { order: initial; }
    .page-hero .hero-panel { max-width: none; }
    .footer-shell { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 680px) {
    :root { --header-h: 68px; --container: min(100% - 24px, 1280px); }
    .header-shell { width: min(100% - 24px, 1360px); }
    .brand-logo { width: 104px; }
    .header-actions .main-btn { min-height: 40px; padding: 8px 17px; }
    .menu-toggle { width: 40px; height: 40px; padding: 8px; }
    .carousel-section { padding-top: 12px; }
    .carousel { width: min(100% - 20px, 1360px); border-radius: 18px; }
    .carousel-slide img { height: clamp(190px, 57vw, 360px); }
    .carousel-arrow { width: 40px; height: 40px; font-size: 28px; }
    .carousel-arrow.prev { left: 8px; }
    .carousel-arrow.next { right: 8px; }
    .carousel-dots { bottom: 10px; }
    .section { padding: 48px 0; }
    .section.compact { padding: 36px 0; }
    .card-grid, .card-grid.two, .card-grid.four, .quick-grid, .feature-strip, .process-list, .image-gallery { grid-template-columns: 1fr; }
    .info-card, .review-card, .faq-item, .notice-card, .stat-card { padding: 20px; }
    .page-hero { padding-top: 52px; }
    .page-hero .hero-shell { gap: 26px; }
    .page-hero .hero-panel { padding: 20px; }
    .media-frame img { max-height: 360px; }
    .mobile-nav { grid-template-columns: 1fr 1fr; }
    .footer-shell { grid-template-columns: 1fr; gap: 28px; padding: 44px 0 34px; }
}
@media (max-width: 430px) {
    .mobile-drawer { width: 92vw; padding: 18px; }
    .mobile-nav { grid-template-columns: 1fr; }
    .header-actions { gap: 7px; }
    .header-actions .main-btn { padding-inline: 14px; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}