:root {
    --bg: #F4FBFF;
    --surface: #FFFFFF;
    --soft: #E8F7FF;
    --primary: #11AEEA;
    --primary-deep: #1688D8;
    --title: #155A9D;
    --text: #24384A;
    --muted: #60758A;
    --border: rgba(17, 174, 234, 0.18);
    --footer: #073A68;
    --shadow: 0 18px 48px rgba(21, 90, 157, 0.10);
    --shadow-small: 0 10px 28px rgba(21, 90, 157, 0.08);
    --radius: 24px;
    --header-height: 76px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    padding-top: var(--header-height);
    background: var(--bg);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
    line-height: 1.75;
}
body.drawer-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { border: 0; }
.container { width: min(100% - 32px, 1360px); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 200; padding: 10px 16px; border-radius: 10px; background: var(--footer); color: #fff; }
.skip-link:focus { top: 12px; }

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 100;
    height: var(--header-height);
    background: rgba(255,255,255,0.96);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(16px);
    box-shadow: 0 4px 18px rgba(21, 90, 157, 0.05);
}
.site-header__inner {
    width: min(100% - 32px, 1360px);
    height: 100%;
    margin-inline: auto;
    display: flex;
    align-items: center;
    gap: clamp(12px, 1.6vw, 28px);
}
.brand-logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.brand-logo img { width: clamp(92px, 9vw, 132px); max-height: 48px; object-fit: contain; }
.desktop-nav { flex: 1 1 auto; min-width: 0; display: flex; justify-content: center; align-items: center; gap: clamp(8px, 1vw, 18px); }
.desktop-nav a { white-space: nowrap; font-size: clamp(12px, 0.9vw, 15px); color: var(--text); padding: 9px 2px; position: relative; }
.desktop-nav a::after { content: ""; position: absolute; left: 50%; right: 50%; bottom: 2px; height: 2px; background: var(--primary); border-radius: 999px; transition: .2s ease; }
.desktop-nav a:hover, .desktop-nav a.active { color: var(--primary-deep); }
.desktop-nav a:hover::after, .desktop-nav a.active::after { left: 8px; right: 8px; }
.header-actions { flex: 0 0 auto; display: flex; align-items: center; gap: 10px; }
.main-btn, .secondary-btn, .text-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 22px;
    border-radius: 999px;
    font-weight: 700;
    white-space: nowrap;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.main-btn { color: #fff; background: linear-gradient(135deg, #35D7FF 0%, #1688D8 100%); box-shadow: 0 10px 22px rgba(22,136,216,.22); }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 26px rgba(22,136,216,.28); }
.secondary-btn { color: var(--primary-deep); background: #fff; border: 1px solid var(--border); }
.secondary-btn:hover { background: var(--soft); }
.text-btn { color: var(--primary-deep); background: transparent; border: 1px solid var(--border); }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 10px; border-radius: 13px; background: var(--soft); cursor: pointer; }
.menu-toggle span { display: block; height: 2px; margin: 5px 0; border-radius: 999px; background: var(--title); }

.drawer-overlay { position: fixed; inset: 0; z-index: 109; background: rgba(7,58,104,.35); backdrop-filter: blur(3px); }
.mobile-drawer { position: fixed; top: 0; right: 0; bottom: 0; z-index: 110; width: min(86vw, 380px); padding: 22px; background: #fff; transform: translateX(102%); transition: transform .28s ease; overflow-y: auto; box-shadow: -18px 0 48px rgba(7,58,104,.18); }
.mobile-drawer.open { transform: translateX(0); }
.mobile-drawer__top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; }
.drawer-close { width: 42px; height: 42px; border-radius: 50%; background: var(--soft); color: var(--title); font-size: 28px; line-height: 1; cursor: pointer; }
.drawer-nav { display: grid; gap: 6px; }
.drawer-nav a { padding: 12px 14px; border-radius: 12px; color: var(--text); }
.drawer-nav a:hover, .drawer-nav a.active { color: var(--primary-deep); background: var(--soft); }
.drawer-register { width: 100%; margin-top: 18px; }

main { min-height: 60vh; }
.section { padding: clamp(56px, 7vw, 96px) 0; }
.section-soft { background: var(--soft); }
.eyebrow { display: inline-flex; margin-bottom: 10px; color: var(--primary-deep); font-size: 13px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
h1, h2, h3 { margin-top: 0; color: var(--title); line-height: 1.25; }
h1 { font-size: clamp(34px, 5vw, 64px); margin-bottom: 22px; }
h2 { font-size: clamp(28px, 3.5vw, 44px); margin-bottom: 16px; }
h3 { font-size: clamp(20px, 2vw, 26px); margin-bottom: 12px; }
p { margin: 0 0 16px; color: var(--text); }
.section-heading { max-width: 820px; margin-bottom: 34px; }
.section-heading p { color: var(--muted); font-size: 17px; }
.inline-link { display: inline-flex; align-items: center; gap: 6px; color: var(--primary-deep); font-weight: 700; }
.inline-link::after { content: "→"; transition: transform .2s ease; }
.inline-link:hover::after { transform: translateX(4px); }

.home-carousel { padding: clamp(20px, 3vw, 36px) 0 0; }
.carousel { position: relative; overflow: hidden; border-radius: clamp(18px, 2.5vw, 30px); background: #dff5ff; box-shadow: var(--shadow); }
.carousel-track { position: relative; aspect-ratio: 16 / 6.7; min-height: 220px; }
.carousel-slide { position: absolute; inset: 0; margin: 0; opacity: 0; pointer-events: none; transition: opacity .55s ease; }
.carousel-slide.active { opacity: 1; pointer-events: auto; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; background: #eaf9ff; }
.carousel-arrow { position: absolute; top: 50%; transform: translateY(-50%); z-index: 3; width: 46px; height: 46px; border-radius: 50%; color: var(--title); background: rgba(255,255,255,.86); box-shadow: 0 8px 20px rgba(7,58,104,.16); font-size: 30px; cursor: pointer; }
.carousel-prev { left: 18px; }
.carousel-next { right: 18px; }
.carousel-dots { position: absolute; left: 50%; bottom: 16px; z-index: 3; display: flex; gap: 8px; transform: translateX(-50%); }
.carousel-dots button { width: 10px; height: 10px; padding: 0; border-radius: 999px; background: rgba(255,255,255,.7); box-shadow: 0 1px 4px rgba(7,58,104,.18); cursor: pointer; transition: width .2s ease, background .2s ease; }
.carousel-dots button.active { width: 28px; background: var(--primary-deep); }

.intro-panel, .notice-panel, .compliance-box, .app-banner, .about-summary {
    padding: clamp(28px, 5vw, 56px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: #fff;
    box-shadow: var(--shadow-small);
}
.intro-panel { display: grid; grid-template-columns: 1fr auto; gap: 36px; align-items: center; }
.intro-panel h1 { max-width: 900px; }
.intro-panel p { max-width: 920px; color: var(--muted); font-size: 17px; }
.intro-actions { display: flex; flex-direction: column; gap: 12px; min-width: 150px; }

.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.quick-links .card-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.info-card { overflow: hidden; border: 1px solid var(--border); border-radius: 20px; background: #fff; box-shadow: var(--shadow-small); transition: transform .22s ease, box-shadow .22s ease; }
.info-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.card-media { aspect-ratio: 16 / 9; background: var(--soft); }
.card-media img { width: 100%; height: 100%; object-fit: contain; }
.card-body { padding: 24px; }
.card-body p { color: var(--muted); }

.feature-row { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
.feature-copy { max-width: 720px; }
.stat-list { display: grid; gap: 16px; }
.stat-list div, .mini-cards div { padding: 20px 22px; border-radius: 18px; background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow-small); }
.stat-list strong, .mini-cards strong { display: block; color: var(--title); font-size: 22px; }
.stat-list span, .mini-cards span { color: var(--muted); }

.two-column-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.feature-card { overflow: hidden; border-radius: var(--radius); background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow-small); }
.feature-card img { width: 100%; height: 260px; object-fit: contain; background: var(--soft); }
.feature-card > div { padding: 28px; }
.compact .text-card { padding: 32px; border-radius: var(--radius); background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow-small); }

.split-panel { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(28px, 5vw, 64px); align-items: center; }
.split-panel--reverse { grid-template-columns: 1fr 1fr; }
.split-panel__copy p { color: var(--muted); font-size: 17px; }
.split-panel__media { margin: 0; overflow: hidden; border-radius: var(--radius); background: var(--soft); box-shadow: var(--shadow-small); }
.split-panel__media img { width: 100%; height: 100%; max-height: 520px; object-fit: contain; }
.check-list { padding: 0; margin: 22px 0; list-style: none; display: grid; gap: 12px; }
.check-list li { position: relative; padding-left: 30px; color: var(--text); }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--primary-deep); font-weight: 800; }
.mini-cards { display: grid; gap: 16px; }

.app-banner { display: grid; grid-template-columns: 1.1fr .9fr; gap: 38px; align-items: center; background: linear-gradient(135deg, #fff 0%, #e8f7ff 100%); }
.app-banner img { width: 100%; max-height: 430px; object-fit: contain; }
.about-summary { display: grid; grid-template-columns: .9fr 1.1fr; gap: 40px; align-items: center; }
.about-summary img { width: 100%; max-height: 430px; object-fit: contain; border-radius: 20px; background: var(--soft); }

.notice-panel, .compliance-box { display: grid; grid-template-columns: 1.1fr .9fr; gap: 34px; align-items: start; }
.notice-panel ul, .compliance-box ul { margin: 0; padding-left: 20px; display: grid; gap: 12px; }
.notice-panel li, .compliance-box li { color: var(--text); }
.compliance-section { padding-top: 36px; }
.compliance-box { background: linear-gradient(135deg, #073A68 0%, #155A9D 100%); border-color: transparent; }
.compliance-box h2, .compliance-box p, .compliance-box li { color: #EAF8FF; }
.compliance-box .eyebrow { color: #8fe8ff; }

.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.review-card { margin: 0; padding: 26px; border: 1px solid var(--border); border-radius: 20px; background: #fff; box-shadow: var(--shadow-small); }
.review-card p { color: var(--text); }
.review-card footer { color: var(--primary-deep); font-weight: 700; }

.faq-preview, .faq-list { max-width: 980px; }
details { margin-bottom: 14px; border: 1px solid var(--border); border-radius: 16px; background: #fff; box-shadow: var(--shadow-small); }
summary { position: relative; padding: 20px 56px 20px 22px; color: var(--title); font-weight: 700; cursor: pointer; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 22px; top: 50%; transform: translateY(-50%); color: var(--primary-deep); font-size: 24px; }
details[open] summary::after { content: "−"; }
details p { padding: 0 22px 22px; color: var(--muted); }
.faq-preview .secondary-btn { margin-top: 14px; }

.page-hero { padding: clamp(50px, 7vw, 90px) 0; background: linear-gradient(135deg, #f4fbff 0%, #e8f7ff 100%); }
.page-hero__grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.page-hero__copy { max-width: 760px; }
.page-hero__copy p { color: var(--muted); font-size: 18px; }
.page-hero__media { margin: 0; overflow: hidden; border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
.page-hero__media img { width: 100%; min-height: 280px; max-height: 480px; object-fit: contain; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }

.site-footer { margin-top: 30px; padding-top: 56px; background: var(--footer); color: #EAF8FF; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 36px; }
.footer-brand img { width: 128px; max-height: 50px; object-fit: contain; margin-bottom: 18px; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 460px; color: #cfeeff; }
.site-footer h2 { color: #fff; font-size: 18px; margin-bottom: 16px; }
.site-footer a { display: block; margin: 9px 0; color: #d8f4ff; }
.site-footer a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 40px; padding: 22px 0; border-top: 1px solid rgba(255,255,255,.15); }
.footer-bottom p { margin: 0; color: #cfeeff; font-size: 14px; }

@media (max-width: 1180px) {
    .desktop-nav { display: none; }
    .site-header__inner { justify-content: space-between; }
    .menu-toggle { display: block; }
    .quick-links .card-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
    :root { --header-height: 68px; }
    .section { padding: 56px 0; }
    .page-hero__grid, .feature-row, .split-panel, .split-panel--reverse, .app-banner, .about-summary, .notice-panel, .compliance-box { grid-template-columns: 1fr; }
    .page-hero__media { order: -1; }
    .page-hero__media img { min-height: 220px; }
    .intro-panel { grid-template-columns: 1fr; }
    .intro-actions { flex-direction: row; flex-wrap: wrap; }
    .card-grid, .quick-links .card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .review-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
    .container, .site-header__inner { width: min(100% - 24px, 1360px); }
    .brand-logo img { width: 96px; }
    .header-actions .main-btn { min-height: 40px; padding-inline: 17px; }
    .menu-toggle { width: 40px; height: 40px; }
    .home-carousel { padding-top: 12px; }
    .carousel-track { aspect-ratio: 16 / 10; min-height: 200px; }
    .carousel-arrow { width: 40px; height: 40px; font-size: 26px; }
    .carousel-prev { left: 10px; }
    .carousel-next { right: 10px; }
    .carousel-dots { bottom: 10px; }
    .card-grid, .quick-links .card-grid, .two-column-cards, .review-grid, .footer-grid { grid-template-columns: 1fr; }
    .feature-card img { height: 210px; }
    .intro-panel, .notice-panel, .compliance-box, .app-banner, .about-summary { padding: 24px; }
    .footer-brand { grid-column: auto; }
    .footer-bottom { flex-direction: column; }
    h1 { font-size: clamp(32px, 10vw, 46px); }
    h2 { font-size: clamp(26px, 8vw, 36px); }
    .hero-actions, .intro-actions { flex-direction: column; align-items: stretch; }
    .hero-actions a, .intro-actions a { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}