:root {
    --body-bg: #E6EBF2;
    --nav-bg: #F5F7FB;
    --soft-bg: #EEF2F7;
    --soft-bg-2: #DDE4EE;
    --white: #FFFFFF;
    --blue: #289CFF;
    --nav-text: #4E5F7A;
    --text: #243447;
    --muted: #66788A;
    --light-text: #8A9AAF;
    --footer: #243447;
    --footer-text: #EAF3FF;
    --border: rgba(40,156,255,0.16);
    --shadow: 0 14px 36px rgba(56,92,138,0.12);
    --button: linear-gradient(180deg, #32D1F6 0%, #27B9F4 35%, #249BFF 100%);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--body-bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.container-wide { width: min(1280px, calc(100% - 28px)); margin: 0 auto; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 9999;
    background: #F5F7FB;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 24px rgba(56,92,138,0.10);
}
.desktop-header { min-height: 76px; display: flex; align-items: center; gap: 18px; }
.site-logo img { width: 142px; max-height: 46px; object-fit: contain; }
.nav { flex: 1; display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 4px 8px; }
.nav a { color: #4E5F7A; font-weight: 700; font-size: 14px; padding: 10px 8px 13px; position: relative; white-space: nowrap; }
.nav a::after { content: ""; position: absolute; left: 10px; right: 10px; bottom: 4px; height: 3px; background: transparent; border-radius: 99px; }
.nav a.active, .nav a:hover { color: #289CFF; }
.nav a.active::after, .nav a:hover::after { background: #289CFF; }
.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 24px;
    border-radius: 999px;
    background: linear-gradient(180deg, #32D1F6 0%, #27B9F4 35%, #249BFF 100%);
    color: #FFFFFF;
    font-weight: 800;
    border: 0;
    box-shadow: 0 10px 24px rgba(36,155,255,0.25);
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    white-space: nowrap;
}
.main-btn:hover { background: linear-gradient(180deg, #48D9F7 0%, #1E90F0 100%); transform: translateY(-1px); box-shadow: 0 14px 28px rgba(36,155,255,0.30); }
.small-btn { min-height: 36px; padding: 0 16px; font-size: 14px; }
.header-btn { flex: 0 0 auto; }
.mobile-topbar { display: none; min-height: 64px; align-items: center; justify-content: space-between; padding: 0 14px; }
.mobile-logo img { width: 126px; max-height: 42px; object-fit: contain; }
.menu-toggle { width: 42px; height: 42px; border: 0; background: rgba(40,156,255,0.10); border-radius: 12px; display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.menu-toggle span { width: 20px; height: 2px; background: #289CFF; border-radius: 4px; }
.drawer-mask { position: fixed; inset: 0; background: rgba(0,0,0,0.38); opacity: 0; visibility: hidden; transition: .25s ease; z-index: 10000; }
.mobile-drawer { position: fixed; top: 0; left: 0; width: 84vw; max-width: 320px; height: 100vh; background: #FFFFFF; transform: translateX(-105%); transition: transform .28s ease; z-index: 10001; box-shadow: 20px 0 36px rgba(36,52,71,0.22); overflow-y: auto; }
.drawer-open .mobile-drawer { transform: translateX(0); }
.drawer-open .drawer-mask { opacity: 1; visibility: visible; }
.drawer-open { overflow: hidden; }
.drawer-head { height: 72px; display: flex; align-items: center; justify-content: space-between; padding: 0 18px; border-bottom: 1px solid rgba(40,156,255,0.14); background: #F5F7FB; }
.drawer-logo img { width: 138px; max-height: 46px; object-fit: contain; }
.drawer-close { width: 38px; height: 38px; border-radius: 50%; border: 0; background: rgba(40,156,255,0.12); color: #289CFF; font-size: 26px; line-height: 1; }
.drawer-nav { padding: 14px 16px 28px; display: grid; gap: 8px; }
.drawer-nav a { padding: 12px 14px; border-radius: 14px; color: #4E5F7A; font-weight: 700; background: #F5F7FB; }
.drawer-nav a.active, .drawer-nav a:hover { color: #289CFF; background: #EEF2F7; }
.site-main { min-height: 60vh; }
.banner-slider {
    width: min(1200px, calc(100% - 32px));
    margin: 28px auto 36px;
    border-radius: 20px;
    background: #FFFFFF;
    box-shadow: 0 18px 40px rgba(56,92,138,0.12);
    overflow: hidden;
    position: relative;
    aspect-ratio: 1200 / 430;
}
.banner-track, .slide { position: absolute; inset: 0; }
.slide { opacity: 0; transition: opacity .45s ease; }
.slide.active { opacity: 1; z-index: 1; }
.banner-slider img { width: 100%; height: 100%; object-fit: contain; background: #FFFFFF; }
.banner-caption, .banner-text, .slide-title, .slide-desc, .slide-content, .slide-card, .banner-card { display: none !important; }
.slider-arrow { position: absolute; top: 50%; transform: translateY(-50%); z-index: 3; width: 42px; height: 42px; border: 0; border-radius: 50%; background: rgba(255,255,255,0.84); color: #289CFF; font-size: 28px; line-height: 1; box-shadow: 0 8px 18px rgba(56,92,138,0.16); cursor: pointer; }
.slider-prev { left: 16px; }
.slider-next { right: 16px; }
.slider-dots { position: absolute; left: 0; right: 0; bottom: 16px; z-index: 3; display: flex; justify-content: center; gap: 8px; }
.slider-dots button { width: 10px; height: 10px; border: 0; border-radius: 50%; background: rgba(36,52,71,0.25); cursor: pointer; padding: 0; }
.slider-dots button.active { width: 26px; border-radius: 99px; background: #289CFF; }
.section { padding: 34px 0; }
.section.tight { padding: 18px 0; }
.section-head { margin-bottom: 22px; max-width: 780px; }
h1, h2, h3, .section-title { color: #289CFF; line-height: 1.25; margin: 0 0 14px; }
h1 { font-size: clamp(30px, 5vw, 52px); letter-spacing: -1px; }
h2, .section-title { font-size: clamp(25px, 3.5vw, 38px); }
h3 { font-size: 20px; }
p { margin: 0 0 14px; color: #243447; }
.lead { font-size: 18px; color: #66788A; }
.muted { color: #66788A; }
.fine { color: #8A9AAF; font-size: 14px; }
.hero-panel, .card, .zone-card, .info-card, .review-card, .faq-item, .notice-box {
    background: rgba(255,255,255,0.92);
    border: 1px solid rgba(40,156,255,0.16);
    box-shadow: 0 14px 36px rgba(56,92,138,0.10);
    border-radius: 22px;
}
.hero-panel { padding: clamp(26px, 5vw, 54px); display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(260px, .9fr); gap: 30px; align-items: center; }
.hero-panel.no-image { grid-template-columns: 1fr; }
.hero-panel .hero-copy { max-width: 730px; }
.hero-actions { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; margin-top: 18px; }
.text-link { color: #289CFF; font-weight: 800; display: inline-flex; align-items: center; gap: 6px; }
.text-link::after { content: "›"; font-size: 18px; }
.hero-image, .image-card { background: #F5F7FB; border-radius: 20px; padding: 12px; border: 1px solid rgba(40,156,255,0.12); }
.hero-image img, .image-card img, .content-img, .zone-card img, .app-section img { max-width: 100%; height: auto; object-fit: contain; margin: 0 auto; border-radius: 16px; }
.grid { display: grid; gap: 18px; }
.grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card, .zone-card, .info-card, .review-card, .faq-item, .notice-box { padding: 22px; }
.card .tag, .number-badge, .pill { color: #289CFF; font-weight: 800; }
.card .tag { display: inline-block; margin-bottom: 8px; }
.number-badge { width: 34px; height: 34px; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center; background: rgba(40,156,255,0.12); margin-bottom: 10px; }
.zone-card { display: grid; grid-template-columns: minmax(120px, 240px) minmax(0, 1fr); gap: 18px; align-items: center; }
.zone-card img { max-height: 210px; }
.feature-list { display: grid; gap: 12px; padding: 0; margin: 16px 0 0; list-style: none; }
.feature-list li { position: relative; padding-left: 24px; color: #243447; }
.feature-list li::before { content: ""; position: absolute; left: 0; top: .78em; width: 9px; height: 9px; border-radius: 50%; background: #289CFF; box-shadow: 0 0 0 5px rgba(40,156,255,0.12); }
.notice-box { background: #EEF2F7; }
.review-card { display: flex; flex-direction: column; gap: 10px; }
.review-card strong { color: #289CFF; }
.faq-list { display: grid; gap: 14px; }
.faq-item h3 { margin-bottom: 8px; }
.breadcrumb { display: flex; gap: 8px; flex-wrap: wrap; color: #66788A; font-size: 14px; margin-bottom: 12px; }
.breadcrumb a { color: #289CFF; font-weight: 700; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, .72fr); gap: 22px; align-items: start; }
.app-section { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 24px; align-items: center; }
.soft-panel { background: #F5F7FB; border-radius: 20px; padding: 22px; border: 1px solid rgba(40,156,255,0.12); }
.site-footer { margin-top: 44px; background: #243447; color: #EAF3FF; }
.footer-grid { display: grid; grid-template-columns: 1.35fr .7fr .7fr 1fr; gap: 28px; padding: 42px 0 30px; }
.footer-brand img { width: 142px; max-height: 46px; object-fit: contain; margin-bottom: 14px; }
.site-footer p, .site-footer a { color: #EAF3FF; opacity: .92; }
.site-footer h3 { color: #EAF3FF; font-size: 18px; margin-bottom: 12px; }
.footer-links { display: grid; gap: 8px; align-content: start; }
.footer-links a:hover { color: #32D1F6; }
.footer-bottom { border-top: 1px solid rgba(234,243,255,0.16); padding: 16px; text-align: center; color: #EAF3FF; font-size: 14px; }
@media (max-width: 1100px) {
    .desktop-header { display: none; }
    .mobile-topbar { display: flex; }
    .site-main { padding-top: 0; }
    .banner-slider { margin-top: 18px; aspect-ratio: 16 / 7; }
    .grid.cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
    .container, .container-wide { width: min(100% - 24px, 1120px); }
    .section { padding: 24px 0; }
    .banner-slider { width: calc(100% - 24px); border-radius: 16px; aspect-ratio: 16 / 8.2; margin-bottom: 24px; }
    .slider-arrow { width: 36px; height: 36px; font-size: 24px; }
    .slider-prev { left: 10px; }
    .slider-next { right: 10px; }
    .hero-panel, .split, .app-section { grid-template-columns: 1fr; }
    .hero-panel { padding: 24px; }
    .grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; }
    .zone-card { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .main-btn { min-height: 40px; padding: 0 18px; }
    h1 { font-size: 32px; }
}
@media (max-width: 420px) {
    .mobile-logo img { width: 112px; }
    .small-btn { padding: 0 14px; }
    .card, .zone-card, .info-card, .review-card, .faq-item, .notice-box { padding: 18px; }
}