:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --soft: #E8F7FF;
    --primary: #10AEEA;
    --deep: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --line: #CCEAF8;
    --footer: #073A68;
    --footer-text: #EAF8FF;
    --shadow: 0 18px 50px rgba(20, 106, 160, .12);
    --shadow-soft: 0 10px 28px rgba(25, 116, 170, .09);
    --radius-xl: 28px;
    --radius-lg: 22px;
    --radius-md: 16px;
    --content: 1240px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.75;
}
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
.site-shell { min-height: 100vh; }
.skip-link {
    position: fixed; left: 16px; top: -80px; z-index: 2000;
    padding: 10px 16px; border-radius: 10px; background: var(--footer); color: #fff;
}
.skip-link:focus { top: 12px; }
.site-header {
    position: sticky; top: 0; z-index: 1000;
    background: rgba(255,255,255,.96);
    border-bottom: 1px solid rgba(204,234,248,.9);
    backdrop-filter: blur(16px);
}
.header-inner {
    width: min(calc(100% - 32px), 1360px);
    height: 76px; margin: 0 auto; display: flex; align-items: center; gap: 22px;
}
.brand-logo { flex: 0 0 auto; display: flex; align-items: center; }
.brand-logo img { width: 142px; max-height: 48px; object-fit: contain; }
.desktop-nav {
    flex: 1; min-width: 0; display: flex; justify-content: center; align-items: center; gap: 2px;
    white-space: nowrap;
}
.desktop-nav a {
    padding: 10px 11px; border-radius: 11px; color: var(--deep); font-size: 14px; font-weight: 650;
    transition: .2s ease;
}
.desktop-nav a:hover, .desktop-nav a.active { background: var(--soft); color: var(--primary); }
.header-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.main-btn, .secondary-btn {
    display: inline-flex; align-items: center; justify-content: center; min-height: 44px; 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,.26); }
.secondary-btn { color: var(--deep); background: #fff; border: 1px solid var(--line); }
.main-btn:hover, .secondary-btn:hover { transform: translateY(-2px); }
.menu-toggle {
    display: none; width: 44px; height: 44px; padding: 10px; border: 0; border-radius: 12px; background: var(--soft);
}
.menu-toggle span { display: block; height: 2px; margin: 5px 0; border-radius: 3px; background: var(--deep); }
.drawer-overlay { position: fixed; inset: 0; z-index: 1090; background: rgba(3,31,57,.48); opacity: 0; transition: .22s ease; }
.drawer-overlay.show { opacity: 1; }
.mobile-drawer {
    position: fixed; z-index: 1100; right: 0; top: 0; width: min(88vw, 380px); height: 100dvh; padding: 18px;
    background: #fff; transform: translateX(105%); transition: transform .25s ease; overflow-y: auto; box-shadow: -20px 0 60px rgba(0,44,80,.22);
}
.mobile-drawer.open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.drawer-logo img { width: 130px; max-height: 44px; object-fit: contain; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 12px; background: var(--soft); color: var(--deep); font-size: 28px; line-height: 1; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 18px 0; }
.drawer-nav a { padding: 12px 13px; border-radius: 12px; background: #f7fcff; color: var(--deep); font-size: 14px; font-weight: 650; }
.drawer-register { width: 100%; }
main { display: block; }
.section { padding: 72px 0; }
.section.compact { padding: 50px 0; }
.section.soft { background: linear-gradient(180deg, rgba(232,247,255,.72), rgba(244,251,255,.5)); }
.container { width: min(calc(100% - 36px), var(--content)); margin: 0 auto; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
.section-head > div { max-width: 760px; }
.eyebrow { margin: 0 0 8px; color: var(--primary); font-size: 13px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
h1, h2, h3 { margin-top: 0; color: var(--deep); line-height: 1.28; }
h1 { font-size: clamp(34px, 5vw, 62px); letter-spacing: -.035em; }
h2 { font-size: clamp(27px, 3vw, 40px); letter-spacing: -.02em; }
h3 { font-size: 20px; }
p { margin: 0 0 1em; }
.lead { color: var(--muted); font-size: clamp(16px, 2vw, 19px); }
.text-link { color: var(--deep); font-weight: 750; }
.text-link::after { content: " →"; color: var(--primary); }
.hero-slider { width: min(calc(100% - 24px), 1500px); margin: 20px auto 0; position: relative; border-radius: 30px; overflow: hidden; background: #dff5ff; box-shadow: var(--shadow); }
.slider-stage { position: relative; aspect-ratio: 16 / 6.3; min-height: 280px; }
.slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .55s ease; }
.slide.active { opacity: 1; visibility: visible; }
.slide img { width: 100%; height: 100%; object-fit: contain; background: #eaf8ff; }
.slider-arrow {
    position: absolute; z-index: 4; top: 50%; transform: translateY(-50%); width: 48px; height: 48px;
    border: 1px solid rgba(255,255,255,.85); border-radius: 50%; background: rgba(7,58,104,.45); color: #fff; font-size: 26px;
}
.slider-arrow:hover { background: rgba(7,58,104,.72); }
.slider-arrow.prev { left: 18px; }
.slider-arrow.next { right: 18px; }
.slider-dots { position: absolute; z-index: 5; left: 50%; bottom: 17px; transform: translateX(-50%); display: flex; gap: 8px; }
.slider-dot { width: 9px; height: 9px; padding: 0; border: 0; border-radius: 50%; background: rgba(255,255,255,.64); box-shadow: 0 0 0 1px rgba(7,58,104,.18); }
.slider-dot.active { width: 28px; border-radius: 99px; background: #fff; }
.intro-panel {
    display: grid; grid-template-columns: 1.4fr .6fr; gap: 26px; padding: 38px; border-radius: var(--radius-xl); background: #fff; box-shadow: var(--shadow-soft);
}
.intro-actions { display: flex; align-items: center; justify-content: flex-end; gap: 12px; flex-wrap: wrap; }
.pill-scroll { display: flex; gap: 12px; overflow-x: auto; padding: 4px 1px 12px; scrollbar-width: thin; }
.pill-scroll a { flex: 0 0 auto; padding: 11px 18px; border-radius: 999px; background: #fff; border: 1px solid var(--line); color: var(--deep); font-weight: 700; box-shadow: 0 8px 20px rgba(26,120,178,.06); }
.dashboard-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.info-card, .category-card, .review-card, .faq-item, .notice-card {
    border: 1px solid rgba(204,234,248,.85); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-soft);
}
.info-card { padding: 24px; }
.info-index { display: inline-grid; place-items: center; width: 38px; height: 38px; margin-bottom: 18px; border-radius: 12px; background: var(--soft); color: var(--primary); font-weight: 850; }
.feature-card { display: grid; grid-template-columns: 1.08fr .92fr; gap: 0; overflow: hidden; border-radius: var(--radius-xl); background: #fff; box-shadow: var(--shadow); }
.feature-card.reverse { grid-template-columns: .92fr 1.08fr; }
.feature-card.reverse .feature-media { order: 2; }
.feature-media { min-height: 390px; background: var(--soft); }
.feature-media img { width: 100%; height: 100%; object-fit: contain; }
.feature-copy { padding: clamp(30px, 5vw, 58px); align-self: center; }
.feature-copy ul, .content-card ul { margin: 18px 0 24px; padding-left: 1.2em; }
.feature-copy li, .content-card li { margin: 8px 0; }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.category-card { overflow: hidden; }
.category-card img { width: 100%; aspect-ratio: 16 / 10; object-fit: contain; background: var(--soft); }
.category-card .card-body { padding: 24px; }
.app-banner { display: grid; grid-template-columns: 1fr .82fr; gap: 30px; align-items: center; padding: 28px 40px; border-radius: var(--radius-xl); background: linear-gradient(135deg, #e9faff 0%, #ffffff 48%, #dff4ff 100%); border: 1px solid #c9edfb; box-shadow: var(--shadow); overflow: hidden; }
.app-banner img { width: 100%; max-height: 390px; object-fit: contain; }
.security-grid { display: grid; grid-template-columns: .92fr 1.08fr; gap: 28px; align-items: stretch; }
.security-image { border-radius: var(--radius-xl); overflow: hidden; background: #fff; box-shadow: var(--shadow-soft); }
.security-image img { width: 100%; height: 100%; min-height: 390px; object-fit: contain; }
.security-list { display: grid; gap: 14px; }
.notice-card { padding: 22px; }
.notice-card strong { display: block; color: var(--deep); margin-bottom: 6px; }
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.review-card { padding: 24px; }
.review-card:nth-child(4), .review-card:nth-child(5), .review-card:nth-child(6) { transform: translateX(8%); }
.review-role { display: inline-flex; margin-bottom: 12px; padding: 5px 11px; border-radius: 99px; background: var(--soft); color: var(--deep); font-size: 13px; font-weight: 750; }
.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.service-tile { padding: 24px; border-radius: var(--radius-lg); background: linear-gradient(180deg,#fff,#f3fbff); border: 1px solid var(--line); }
.about-summary { display: grid; grid-template-columns: 1.2fr .8fr; gap: 28px; align-items: center; }
.about-summary .metric-box { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.metric { padding: 22px; border-radius: 18px; background: #fff; border: 1px solid var(--line); }
.metric strong { display: block; color: var(--primary); font-size: 28px; }
.faq-list { display: grid; gap: 12px; }
.faq-item { overflow: hidden; }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 20px 22px; border: 0; background: transparent; color: var(--deep); text-align: left; font-weight: 750; }
.faq-question::after { content: "+"; font-size: 24px; color: var(--primary); }
.faq-item.open .faq-question::after { content: "−"; }
.faq-answer { display: none; padding: 0 22px 20px; color: var(--muted); }
.faq-item.open .faq-answer { display: block; }
.compliance-band { padding: 28px; border-radius: var(--radius-xl); background: #073A68; color: #eaf8ff; }
.compliance-band h2 { color: #fff; }
.compliance-band p { color: #d9f2ff; }
.page-hero { padding: 74px 0 40px; background: radial-gradient(circle at 85% 10%, rgba(53,215,255,.16), transparent 35%); }
.page-hero-inner { display: grid; grid-template-columns: 1.15fr .85fr; gap: 38px; align-items: center; }
.page-hero-card { padding: 24px; border-radius: var(--radius-xl); background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); }
.page-hero-card img { width: 100%; max-height: 420px; object-fit: contain; border-radius: 18px; background: var(--soft); }
.breadcrumbs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; color: var(--muted); font-size: 14px; }
.breadcrumbs a { color: var(--deep); }
.content-stack { display: grid; gap: 22px; }
.content-card { padding: clamp(26px, 4vw, 42px); border-radius: var(--radius-xl); background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-soft); }
.content-card.split { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: center; }
.content-card figure { margin: 0; }
.content-card figure img { width: 100%; max-height: 420px; object-fit: contain; border-radius: 18px; background: var(--soft); }
.content-card figcaption { margin-top: 10px; color: var(--muted); font-size: 13px; }
.tag-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.tag-list span { padding: 7px 12px; border-radius: 99px; background: var(--soft); color: var(--deep); font-size: 13px; font-weight: 700; }
.callout { padding: 22px 24px; border-left: 4px solid var(--primary); border-radius: 0 16px 16px 0; background: #effaff; color: var(--deep); }
.cta-panel { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 32px; border-radius: var(--radius-xl); background: linear-gradient(135deg,#0a5a95,#0d83c7); color: #fff; }
.cta-panel h2, .cta-panel p { color: #fff; }
.site-footer { margin-top: 72px; padding: 54px 0 0; background: var(--footer); color: var(--footer-text); }
.footer-grid { width: min(calc(100% - 36px), var(--content)); margin: 0 auto; display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 30px; }
.footer-brand img { width: 145px; max-height: 50px; object-fit: contain; margin-bottom: 18px; filter: brightness(0) invert(1); }
.footer-grid h2 { color: #fff; font-size: 16px; margin-bottom: 14px; }
.footer-grid a { display: block; width: fit-content; margin: 8px 0; color: #d8f3ff; font-size: 14px; }
.footer-grid p { color: #c9e9f8; }
.footer-notice { width: min(calc(100% - 36px), var(--content)); margin: 30px auto 0; padding: 20px 0; border-top: 1px solid rgba(234,248,255,.16); }
.footer-notice p { margin: 0; color: #cceaf7; font-size: 13px; }
.footer-bottom { margin-top: 10px; padding: 18px max(18px, calc((100% - var(--content))/2)); display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid rgba(234,248,255,.12); color: #bfe2f2; font-size: 13px; }
.back-top { position: fixed; right: 20px; bottom: 20px; z-index: 800; width: 46px; height: 46px; border: 0; border-radius: 50%; background: var(--deep); color: #fff; box-shadow: var(--shadow); opacity: 0; visibility: hidden; transform: translateY(10px); transition: .2s ease; }
.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
@media (max-width: 1179px) {
    .desktop-nav { display: none; }
    .header-inner { height: 70px; }
    .header-actions { margin-left: auto; }
    .menu-toggle { display: block; }
    .dashboard-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
    .section { padding: 58px 0; }
    .hero-slider { border-radius: 22px; }
    .slider-stage { aspect-ratio: 16 / 8.2; }
    .intro-panel, .feature-card, .feature-card.reverse, .app-banner, .security-grid, .about-summary, .page-hero-inner, .content-card.split { grid-template-columns: 1fr; }
    .intro-actions { justify-content: flex-start; }
    .feature-card.reverse .feature-media { order: 0; }
    .feature-media { min-height: 300px; }
    .card-grid, .review-grid { grid-template-columns: repeat(2, 1fr); }
    .review-card:nth-child(n) { transform: none; }
    .service-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1.3fr 1fr 1fr; }
    .footer-grid > div:last-child { grid-column: 2 / 4; }
}
@media (max-width: 640px) {
    .header-inner { width: min(calc(100% - 20px), 1360px); }
    .brand-logo img { width: 116px; }
    .main-btn { min-height: 40px; padding: 0 16px; }
    .menu-toggle { width: 40px; height: 40px; }
    .container { width: min(calc(100% - 24px), var(--content)); }
    .section { padding: 46px 0; }
    .section-head { display: block; }
    h1 { font-size: 36px; }
    h2 { font-size: 28px; }
    .hero-slider { width: calc(100% - 16px); margin-top: 10px; border-radius: 18px; }
    .slider-stage { min-height: 220px; aspect-ratio: 4 / 3; }
    .slider-arrow { width: 40px; height: 40px; font-size: 22px; }
    .slider-arrow.prev { left: 10px; }
    .slider-arrow.next { right: 10px; }
    .intro-panel, .content-card, .page-hero-card { padding: 24px; }
    .dashboard-grid, .card-grid, .review-grid, .service-grid, .footer-grid { grid-template-columns: 1fr; }
    .feature-media, .security-image img { min-height: 240px; }
    .app-banner { padding: 24px; }
    .about-summary .metric-box { grid-template-columns: 1fr; }
    .page-hero { padding-top: 52px; }
    .cta-panel { display: block; }
    .cta-panel .main-btn { margin-top: 12px; }
    .footer-grid > div:last-child { grid-column: auto; }
    .footer-bottom { display: block; text-align: center; }
    .drawer-nav { grid-template-columns: 1fr 1fr; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}