: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, 0.12);
    --shadow: 0 18px 50px rgba(21, 90, 157, 0.10);
    --shadow-soft: 0 12px 34px rgba(21, 90, 157, 0.07);
    --radius-xl: 30px;
    --radius-lg: 22px;
    --radius-md: 16px;
    --gradient: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    overflow-x: hidden;
    background:
        radial-gradient(circle at 8% 8%, rgba(53, 215, 255, 0.14), transparent 28rem),
        radial-gradient(circle at 92% 18%, rgba(22, 136, 216, 0.09), transparent 24rem),
        var(--bg);
    color: var(--text);
    font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, sans-serif;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}
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; }
.container { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.wide-container { width: min(1380px, calc(100% - 40px)); }
.skip-link {
    position: fixed; top: 10px; left: 10px; z-index: 9999;
    transform: translateY(-140%); padding: 10px 16px; border-radius: 10px;
    background: var(--footer); color: #fff; transition: .2s ease;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
    position: sticky; top: 0; z-index: 1000; height: 78px;
    background: rgba(255, 255, 255, .92); backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(21, 90, 157, .08); transition: box-shadow .2s ease;
}
.site-header.scrolled { box-shadow: 0 10px 30px rgba(15, 76, 125, .10); }
.header-inner { height: 100%; display: flex; align-items: center; gap: 22px; }
.brand-logo { flex: 0 0 auto; width: 150px; }
.brand-logo img, .drawer-logo img, .footer-logo img { width: 100%; height: 46px; object-fit: contain; object-position: left center; }
.desktop-nav { margin-left: auto; display: flex; align-items: center; gap: 4px; min-width: 0; white-space: nowrap; }
.desktop-nav a {
    position: relative; padding: 10px 11px; color: #35546f; border-radius: 12px;
    font-size: 14px; font-weight: 650; transition: .2s ease;
}
.desktop-nav a:hover, .desktop-nav a.active { color: var(--deep); background: var(--soft); }
.desktop-nav a.active::after {
    content: ""; position: absolute; left: 24%; right: 24%; bottom: 4px; height: 2px;
    border-radius: 99px; background: 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: 44px;
    padding: 0 22px; border: 0; border-radius: 999px; color: #fff; font-weight: 760;
    background: var(--gradient); box-shadow: 0 10px 24px rgba(22, 136, 216, .25);
    transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(22, 136, 216, .32); }
.secondary-btn {
    display: inline-flex; align-items: center; justify-content: center; min-height: 44px;
    padding: 0 22px; border-radius: 999px; border: 1px solid rgba(21, 90, 157, .20);
    background: #fff; color: var(--deep); font-weight: 720;
}
.menu-toggle {
    display: none; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 14px;
    background: #fff; align-items: center; justify-content: center; flex-direction: column; gap: 5px;
}
.menu-toggle span { width: 20px; height: 2px; border-radius: 99px; background: var(--deep); }
.drawer-overlay { position: fixed; inset: 0; z-index: 1400; background: rgba(3, 33, 59, .46); opacity: 0; transition: opacity .22s ease; }
.drawer-overlay.visible { opacity: 1; }
.mobile-drawer {
    position: fixed; top: 0; right: 0; z-index: 1500; width: min(390px, 88vw); height: 100dvh;
    padding: 24px; background: #fff; transform: translateX(105%); transition: transform .26s ease;
    box-shadow: -18px 0 50px rgba(7, 58, 104, .18); overflow-y: auto;
}
.mobile-drawer.open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.drawer-logo { width: 140px; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 14px; background: var(--soft); color: var(--deep); font-size: 28px; line-height: 1; }
.drawer-nav { display: grid; gap: 4px; margin: 18px 0; }
.drawer-nav a { display: flex; justify-content: space-between; align-items: center; padding: 11px 12px; border-radius: 12px; color: #2f4d67; font-weight: 650; }
.drawer-nav a:hover { background: var(--soft); color: var(--deep); }
.drawer-register { width: 100%; }

main { display: block; }
.section { padding: 84px 0; }
.compact-section { padding: 50px 0; }
.section-soft { background: linear-gradient(180deg, rgba(232, 247, 255, .72), rgba(244, 251, 255, .92)); border-top: 1px solid rgba(21, 90, 157, .06); border-bottom: 1px solid rgba(21, 90, 157, .06); }
.section-heading { max-width: 760px; margin-bottom: 34px; }
.section-heading.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-heading h1, .section-heading h2, .hero-copy h1, .page-hero h1 { margin: 8px 0 14px; color: var(--deep); line-height: 1.18; letter-spacing: -.02em; }
.section-heading h1, .page-hero h1 { font-size: clamp(34px, 5vw, 60px); }
.section-heading h2 { font-size: clamp(28px, 3.8vw, 42px); }
.section-heading p, .page-hero p, .hero-copy p { margin: 0; color: var(--muted); font-size: 17px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--primary); font-size: 13px; font-weight: 820; letter-spacing: .12em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 24px; height: 2px; border-radius: 99px; background: currentColor; }
.eyebrow.light { color: #b8efff; }
.text-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; color: var(--deep); font-weight: 760; }
.text-link::after { content: "→"; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(4px); }
.light-link { color: #fff; }

.carousel-wrap { padding: 22px 0 0; }
.carousel {
    position: relative; width: min(1380px, calc(100% - 40px)); margin: 0 auto; overflow: hidden;
    border-radius: 28px; background: #dff5ff; box-shadow: var(--shadow); aspect-ratio: 16 / 6;
}
.carousel-track { display: flex; height: 100%; transition: transform .55s cubic-bezier(.22,.65,.32,1); }
.carousel-slide { flex: 0 0 100%; min-width: 100%; height: 100%; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; background: #dff5ff; }
.carousel-arrow {
    position: absolute; top: 50%; transform: translateY(-50%); z-index: 2;
    width: 48px; height: 48px; border: 1px solid rgba(255,255,255,.65); border-radius: 50%;
    background: rgba(7, 58, 104, .55); color: #fff; font-size: 24px; backdrop-filter: blur(8px);
}
.carousel-arrow.prev { left: 20px; }
.carousel-arrow.next { right: 20px; }
.carousel-dots { position: absolute; left: 50%; bottom: 18px; transform: translateX(-50%); display: flex; gap: 8px; z-index: 2; }
.carousel-dot { width: 9px; height: 9px; padding: 0; border: 0; border-radius: 99px; background: rgba(255,255,255,.65); transition: .2s ease; }
.carousel-dot.active { width: 28px; background: #fff; }

.hero-intro { padding: 68px 0 34px; }
.hero-grid, .split-grid, .feature-layout, .app-banner, .security-layout, .page-hero-inner { display: grid; grid-template-columns: 1.04fr .96fr; gap: 54px; align-items: center; }
.hero-copy h1 { font-size: clamp(38px, 5.4vw, 66px); }
.hero-copy .lead { font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.visual-card {
    position: relative; padding: 20px; border-radius: var(--radius-xl); background: rgba(255,255,255,.86);
    border: 1px solid rgba(21, 90, 157, .10); box-shadow: var(--shadow);
}
.visual-card::before { content: ""; position: absolute; inset: -16px auto auto -16px; width: 80px; height: 80px; border-radius: 28px; background: rgba(53, 215, 255, .18); z-index: -1; }
.visual-card img { width: 100%; max-height: 480px; object-fit: contain; border-radius: 20px; background: var(--soft); }

.quick-categories-wrap { padding: 18px 0 30px; }
.quick-categories { display: flex; gap: 12px; overflow-x: auto; padding: 6px 2px 14px; scroll-snap-type: x proximity; scrollbar-width: thin; }
.quick-pill { flex: 0 0 250px; scroll-snap-align: start; padding: 18px; border-radius: 999px; border: 1px solid var(--line); background: #fff; box-shadow: var(--shadow-soft); }
.quick-pill strong { display: block; color: var(--deep); font-size: 16px; }
.quick-pill p { margin: 4px 0 0; color: var(--muted); font-size: 13px; line-height: 1.55; }
.quick-pill a { color: var(--primary); font-weight: 760; font-size: 13px; }

.dashboard-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.info-card, .content-card, .review-card, .faq-item, .service-card, .category-card {
    border: 1px solid rgba(21, 90, 157, .10); background: rgba(255,255,255,.94); box-shadow: var(--shadow-soft);
}
.info-card { padding: 26px; border-radius: var(--radius-lg); }
.info-icon { display: inline-grid; place-items: center; width: 46px; height: 46px; margin-bottom: 18px; border-radius: 15px; background: var(--soft); color: var(--deep); font-weight: 850; }
.info-card h3, .content-card h3, .service-card h3, .category-card h3 { margin: 0 0 10px; color: var(--deep); font-size: 20px; }
.info-card p, .content-card p, .service-card p, .category-card p { margin: 0; color: var(--muted); }

.feature-card {
    display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; padding: 38px;
    border-radius: var(--radius-xl); background: linear-gradient(135deg, #ffffff 0%, #e8f7ff 100%);
    border: 1px solid rgba(21,90,157,.10); box-shadow: var(--shadow);
}
.feature-card.reverse { grid-template-columns: .95fr 1.05fr; }
.feature-card.reverse .feature-image { order: 2; }
.feature-image img { width: 100%; max-height: 420px; object-fit: contain; border-radius: 22px; background: #fff; }
.feature-copy h2 { margin: 8px 0 14px; color: var(--deep); font-size: clamp(28px,4vw,44px); line-height: 1.2; }
.feature-copy p { color: var(--muted); }
.mini-list { display: grid; gap: 10px; margin: 22px 0 0; padding: 0; list-style: none; }
.mini-list li { display: flex; gap: 10px; color: #3d5870; }
.mini-list li::before { content: ""; flex: 0 0 auto; width: 8px; height: 8px; margin-top: 9px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 0 5px rgba(16,174,234,.10); }

.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card-grid.four { grid-template-columns: repeat(4, 1fr); }
.card-grid.two { grid-template-columns: repeat(2, 1fr); }
.content-card, .category-card { overflow: hidden; border-radius: var(--radius-lg); }
.card-image { aspect-ratio: 16 / 10; background: var(--soft); }
.card-image img { width: 100%; height: 100%; object-fit: contain; }
.card-body { padding: 24px; }
.card-kicker { color: var(--primary); font-size: 12px; font-weight: 850; letter-spacing: .10em; }

.app-banner {
    padding: 42px; border-radius: var(--radius-xl); overflow: hidden;
    background: linear-gradient(135deg, #0d5f9f 0%, #11aee8 58%, #c9f5ff 140%); color: #fff; box-shadow: var(--shadow);
}
.app-banner h2 { margin: 8px 0 14px; font-size: clamp(30px,4vw,46px); line-height: 1.2; }
.app-banner p { color: rgba(255,255,255,.86); }
.app-banner .eyebrow { color: #bceeff; }
.app-banner .secondary-btn { border-color: rgba(255,255,255,.5); background: rgba(255,255,255,.12); color: #fff; backdrop-filter: blur(8px); }
.app-image img { width: 100%; max-height: 360px; object-fit: contain; border-radius: 22px; background: rgba(255,255,255,.14); }

.security-layout { padding: 40px; border-radius: var(--radius-xl); background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); }
.security-layout img { width: 100%; max-height: 380px; object-fit: contain; border-radius: 22px; background: var(--soft); }
.security-tips { display: grid; gap: 12px; margin-top: 22px; }
.security-tip { padding: 14px 16px; border-radius: 14px; background: var(--soft); color: #35536c; }
.security-tip strong { color: var(--deep); }

.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.review-card { padding: 24px; border-radius: var(--radius-lg); }
.review-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; color: var(--deep); }
.review-avatar { display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; background: var(--gradient); color: #fff; font-weight: 850; }
.review-card p { margin: 0; color: var(--muted); }

.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.service-card { padding: 28px; border-radius: var(--radius-lg); }

.faq-list { display: grid; gap: 12px; }
.faq-item { border-radius: 16px; overflow: hidden; }
.faq-item summary { list-style: none; padding: 18px 22px; color: var(--deep); font-weight: 760; cursor: pointer; position: relative; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 20px; top: 16px; font-size: 24px; color: var(--primary); }
.faq-item[open] summary::after { content: "−"; }
.faq-item p { margin: 0; padding: 0 22px 20px; color: var(--muted); }

.page-hero { padding: 72px 0 52px; }
.page-hero-inner { padding: 44px; border-radius: var(--radius-xl); background: linear-gradient(135deg, #fff 0%, #e8f7ff 100%); border: 1px solid var(--line); box-shadow: var(--shadow); }
.page-hero-copy { max-width: 660px; }
.page-hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.page-hero-image img { width: 100%; max-height: 390px; object-fit: contain; border-radius: 22px; background: #fff; }
.breadcrumb { margin-bottom: 14px; color: var(--muted); font-size: 14px; }
.breadcrumb a { color: var(--deep); }
.prose-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 26px; align-items: start; }
.prose-card { padding: 32px; border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-soft); }
.prose-card h2, .prose-card h3 { margin-top: 0; color: var(--deep); }
.prose-card p { color: var(--muted); }
.callout { padding: 22px; border-left: 4px solid var(--primary); border-radius: 0 16px 16px 0; background: var(--soft); color: #35536c; }
.timeline { display: grid; gap: 16px; counter-reset: step; }
.timeline-item { position: relative; padding: 20px 20px 20px 66px; border-radius: 18px; background: #fff; border: 1px solid var(--line); }
.timeline-item::before { counter-increment: step; content: counter(step); position: absolute; left: 20px; top: 22px; width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; background: var(--gradient); color: #fff; font-weight: 800; }
.timeline-item h3 { margin: 0 0 6px; color: var(--deep); }
.timeline-item p { margin: 0; color: var(--muted); }
.compliance-panel { display: grid; grid-template-columns: .55fr 1.2fr auto; gap: 30px; align-items: center; padding: 34px; border-radius: var(--radius-xl); background: var(--footer); color: var(--footer-text); }
.compliance-panel h2 { margin: 6px 0 0; font-size: 28px; }
.compliance-panel p { margin: 0; color: rgba(234,248,255,.82); }

.contact-form { display: grid; gap: 14px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-field { display: grid; gap: 7px; }
.form-field label { color: var(--deep); font-weight: 700; }
.form-field input, .form-field select, .form-field textarea { width: 100%; border: 1px solid rgba(21,90,157,.18); border-radius: 14px; background: #fbfeff; padding: 13px 14px; color: var(--text); outline: none; }
.form-field textarea { min-height: 140px; resize: vertical; }
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(16,174,234,.10); }

.site-footer { margin-top: 40px; padding-top: 64px; background: var(--footer); color: var(--footer-text); }
.footer-grid { display: grid; grid-template-columns: 1.7fr repeat(3, 1fr); gap: 42px; }
.footer-brand p { max-width: 430px; color: rgba(234,248,255,.75); }
.footer-logo { display: block; width: 150px; margin-bottom: 18px; }
.footer-logo img { filter: brightness(0) invert(1); }
.footer-column { display: grid; align-content: start; gap: 9px; }
.footer-column h2 { margin: 0 0 8px; font-size: 16px; color: #fff; }
.footer-column a { color: rgba(234,248,255,.75); font-size: 14px; }
.footer-column a:hover { color: #fff; }
.footer-notice { margin-top: 42px; padding: 22px 0; border-top: 1px solid rgba(255,255,255,.10); }
.footer-notice p { margin: 0; color: rgba(234,248,255,.72); font-size: 13px; }
.footer-bottom { background: rgba(0,0,0,.10); }
.footer-bottom-inner { min-height: 60px; display: flex; align-items: center; justify-content: space-between; gap: 20px; color: rgba(234,248,255,.72); font-size: 13px; }
.footer-bottom-inner div { display: flex; gap: 18px; }

@media (max-width: 1180px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: inline-flex; }
    .brand-logo { margin-right: auto; }
}
@media (max-width: 960px) {
    .section { padding: 66px 0; }
    .hero-grid, .split-grid, .feature-layout, .app-banner, .security-layout, .page-hero-inner, .prose-grid { grid-template-columns: 1fr; gap: 30px; }
    .feature-card, .feature-card.reverse { grid-template-columns: 1fr; }
    .feature-card.reverse .feature-image { order: 0; }
    .dashboard-grid, .card-grid.four { grid-template-columns: repeat(2, 1fr); }
    .review-grid, .service-grid, .card-grid { grid-template-columns: repeat(2, 1fr); }
    .carousel { aspect-ratio: 16 / 7.4; }
    .compliance-panel { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; }
    .footer-column:last-child { grid-column: 2 / 4; }
}
@media (max-width: 680px) {
    .container, .wide-container { width: min(100% - 28px, 1160px); }
    .site-header { height: 70px; }
    .brand-logo { width: 132px; }
    .main-btn { min-height: 40px; padding: 0 17px; }
    .header-actions { gap: 8px; }
    .menu-toggle { width: 40px; height: 40px; }
    .carousel-wrap { padding-top: 12px; }
    .carousel { width: min(100% - 20px, 1380px); border-radius: 18px; aspect-ratio: 16 / 9; }
    .carousel-arrow { width: 40px; height: 40px; font-size: 20px; }
    .carousel-arrow.prev { left: 10px; }
    .carousel-arrow.next { right: 10px; }
    .carousel-dots { bottom: 10px; }
    .hero-intro { padding-top: 46px; }
    .section { padding: 54px 0; }
    .compact-section { padding: 34px 0; }
    .section-heading { margin-bottom: 26px; }
    .section-heading p, .page-hero p, .hero-copy p { font-size: 15px; }
    .dashboard-grid, .card-grid, .card-grid.two, .card-grid.four, .review-grid, .service-grid { grid-template-columns: 1fr; }
    .feature-card, .app-banner, .security-layout, .page-hero-inner, .prose-card { padding: 24px; border-radius: 22px; }
    .quick-pill { flex-basis: 225px; }
    .page-hero { padding: 48px 0 30px; }
    .form-row { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
    .footer-brand { grid-column: 1 / -1; }
    .footer-column:last-child { grid-column: auto; }
    .footer-bottom-inner { padding: 14px 0; flex-direction: column; align-items: flex-start; }
}
@media (max-width: 420px) {
    .header-inner { gap: 8px; }
    .brand-logo { width: 112px; }
    .header-actions .main-btn { padding: 0 14px; }
    .mobile-drawer { padding: 20px; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-brand, .footer-column:last-child { grid-column: auto; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}