:root {
    --page-bg: #E6EBF2;
    --nav-bg: #F5F7FB;
    --white: #FFFFFF;
    --soft: #EEF2F7;
    --soft-deep: #DDE4EE;
    --blue: #289CFF;
    --nav-text: #4E5F7A;
    --text: #243447;
    --muted: #66788A;
    --light: #8A9AAF;
    --footer: #243447;
    --footer-text: #EAF3FF;
    --btn: linear-gradient(180deg, #32D1F6 0%, #27B9F4 35%, #249BFF 100%);
    --shadow: 0 14px 36px rgba(56,92,138,0.12);
    --border: rgba(40,156,255,0.16);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
    background: var(--page-bg);
    color: var(--text);
    line-height: 1.75;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 9999;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 24px rgba(56,92,138,0.10);
}
.header-inner {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 22px;
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.logo, .drawer-logo, .footer-logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.logo img { max-height: 52px; width: auto; }
.nav-wrap {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    justify-content: center;
}
.nav {
    display: flex;
    align-items: center;
    gap: 20px;
    white-space: nowrap;
    flex-wrap: nowrap;
}
.nav a, .nav-trigger {
    position: relative;
    color: var(--nav-text);
    font-size: 15px;
    font-weight: 700;
    padding: 24px 0 21px;
    background: transparent;
    border: 0;
    cursor: pointer;
    font-family: inherit;
}
.nav a.active, .nav-trigger.active, .nav a:hover, .nav-trigger:hover { color: var(--blue); }
.nav a.active::after, .nav-trigger.active::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 15px;
    height: 3px;
    border-radius: 99px;
    background: var(--blue);
}
.dropdown, .more-dropdown { position: relative; }
.dropdown-menu, .more-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 190px;
    background: var(--white);
    border: 1px solid rgba(40,156,255,0.12);
    border-radius: 14px;
    box-shadow: 0 18px 38px rgba(56,92,138,0.16);
    z-index: 10000;
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: .22s ease;
}
.more-menu { right: 0; left: auto; }
.dropdown:hover .dropdown-menu, .more-dropdown:hover .more-menu, .dropdown:focus-within .dropdown-menu, .more-dropdown:focus-within .more-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.dropdown-menu a, .more-menu a {
    display: block;
    padding: 10px 14px;
    color: var(--nav-text);
    white-space: nowrap;
    border-radius: 10px;
    font-weight: 700;
}
.dropdown-menu a:hover, .more-menu a:hover { color: var(--blue); background: rgba(40,156,255,0.08); }
.header-action { flex: 0 0 auto; display: flex; align-items: center; }
.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 24px;
    border-radius: 999px;
    background: var(--btn);
    color: #FFFFFF;
    font-weight: 800;
    box-shadow: 0 10px 24px rgba(36,155,255,0.25);
    transition: .2s ease;
}
.main-btn:hover { background: linear-gradient(180deg, #48D9F7 0%, #1E90F0 100%); transform: translateY(-1px); }
.mobile-menu-btn { display: none; border: 0; background: transparent; padding: 10px; cursor: pointer; }
.mobile-menu-btn span { display: block; width: 22px; height: 2px; background: var(--nav-text); border-radius: 10px; margin: 5px 0; }
.drawer-mask { position: fixed; inset: 0; background: rgba(15,32,50,.46); opacity: 0; visibility: hidden; z-index: 10001; transition: .25s ease; }
.drawer-mask.show { opacity: 1; visibility: visible; }
.mobile-drawer { position: fixed; top: 0; left: 0; bottom: 0; width: 84vw; max-width: 320px; background: var(--white); z-index: 10002; transform: translateX(-105%); transition: .28s ease; box-shadow: 18px 0 40px rgba(16,35,58,.20); overflow-y: auto; }
.mobile-drawer.open { transform: translateX(0); }
.drawer-open { overflow: hidden; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding: 18px 18px 12px; border-bottom: 1px solid rgba(40,156,255,0.12); }
.drawer-logo img { max-height: 46px; width: auto; }
.drawer-close { border: 0; background: var(--soft); color: var(--text); width: 36px; height: 36px; border-radius: 50%; font-size: 24px; line-height: 1; cursor: pointer; }
.drawer-nav { padding: 14px; display: grid; gap: 8px; }
.drawer-nav a { padding: 12px 14px; border-radius: 12px; color: var(--nav-text); background: #F8FAFD; font-weight: 700; }
.drawer-nav a:hover { color: var(--blue); background: rgba(40,156,255,0.09); }
.page-main { max-width: 1200px; margin: 0 auto; padding: 28px 20px 58px; }
.home-main { padding-top: 24px; }
.banner-slider {
    max-width: 1200px;
    margin: 0 auto 36px;
    border-radius: 20px;
    background: #FFFFFF;
    box-shadow: 0 18px 40px rgba(56,92,138,0.12);
    overflow: hidden;
    position: relative;
    z-index: 1;
}
.slider-track { position: relative; height: clamp(210px, 42vw, 520px); }
.slide { position: absolute; inset: 0; opacity: 0; transition: opacity .35s ease; display: flex; align-items: center; justify-content: center; background: #FFFFFF; }
.slide.active { opacity: 1; z-index: 2; }
.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: 4; width: 42px; height: 42px; border-radius: 50%; border: 1px solid rgba(255,255,255,.75); background: rgba(36,52,71,.42); color: #FFFFFF; font-size: 30px; line-height: 1; cursor: pointer; display: flex; align-items: center; justify-content: center; }
.slider-arrow.prev { left: 18px; }
.slider-arrow.next { right: 18px; }
.slider-dots { position: absolute; left: 0; right: 0; bottom: 16px; z-index: 4; display: flex; justify-content: center; gap: 10px; }
.slider-dot { width: 10px; height: 10px; border-radius: 50%; border: 0; background: rgba(255,255,255,.72); cursor: pointer; padding: 0; }
.slider-dot.active { background: var(--blue); width: 24px; border-radius: 99px; }
.hero, .content-hero, .split-section, .section, .notice-section, .faq-section { margin-bottom: 32px; }
.hero, .content-hero, .section-card, .card, .zone-card, .info-card, .review-card, .faq-item, .notice-section {
    background: rgba(255,255,255,0.92);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    border-radius: 22px;
}
.hero, .content-hero, .section-card, .notice-section { padding: clamp(24px, 4vw, 46px); }
h1, h2, h3, .section-title { color: var(--blue); line-height: 1.35; margin-top: 0; }
h1 { font-size: clamp(30px, 4.8vw, 52px); margin-bottom: 18px; }
h2 { font-size: clamp(24px, 3vw, 34px); margin-bottom: 16px; }
h3 { font-size: 20px; margin-bottom: 10px; }
p { margin: 0 0 14px; color: var(--text); }
.lead { font-size: 18px; color: var(--muted); max-width: 880px; }
.muted { color: var(--muted); }
.text-link { color: var(--blue); font-weight: 800; }
.section-head { display: flex; justify-content: space-between; gap: 18px; align-items: flex-end; margin-bottom: 18px; }
.section-head p { color: var(--muted); max-width: 720px; }
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card, .zone-card, .info-card, .review-card, .faq-item { padding: 22px; }
.card .num, .tag { display: inline-flex; align-items: center; justify-content: center; min-width: 34px; min-height: 28px; padding: 2px 10px; border-radius: 999px; background: rgba(40,156,255,.10); color: var(--blue); font-weight: 900; margin-bottom: 12px; }
.card p, .zone-card p, .info-card p, .review-card p, .faq-item p { color: var(--muted); }
.image-frame { border-radius: 20px; overflow: hidden; background: #FFFFFF; border: 1px solid rgba(40,156,255,0.12); box-shadow: 0 12px 28px rgba(56,92,138,.10); display: flex; align-items: center; justify-content: center; min-height: 220px; }
.image-frame img, .content-img, .zone-card img, .app-section img { max-width: 100%; height: auto; object-fit: contain; }
.split { display: grid; grid-template-columns: 1.1fr .9fr; gap: 28px; align-items: center; }
.product-card { display: grid; gap: 14px; }
.product-card .image-frame { min-height: 180px; }
.check-list { list-style: none; padding: 0; margin: 18px 0 0; display: grid; gap: 12px; }
.check-list li { position: relative; padding-left: 28px; color: var(--muted); }
.check-list li::before { content: ""; position: absolute; left: 0; top: 9px; width: 12px; height: 12px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 5px rgba(40,156,255,.12); }
.steps { counter-reset: step; display: grid; gap: 14px; }
.step { position: relative; padding: 22px 22px 22px 64px; border-radius: 18px; background: #FFFFFF; border: 1px solid var(--border); }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 20px; top: 22px; width: 30px; height: 30px; border-radius: 50%; background: rgba(40,156,255,.10); color: var(--blue); display: flex; align-items: center; justify-content: center; font-weight: 900; }
.review-card strong { display: block; color: var(--text); margin-bottom: 8px; }
.faq-list { display: grid; gap: 14px; }
.faq-item h3 { margin-bottom: 8px; }
.pill-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.pill { background: rgba(40,156,255,.10); color: var(--blue); border: 1px solid rgba(40,156,255,.16); border-radius: 999px; padding: 7px 14px; font-weight: 800; }
.site-footer { background: var(--footer); color: var(--footer-text); margin-top: 40px; }
.footer-inner { max-width: 1200px; margin: 0 auto; padding: 44px 20px 28px; display: grid; grid-template-columns: 1.1fr 1.4fr; gap: 42px; }
.footer-brand p, .footer-note { color: rgba(234,243,255,.82); }
.footer-logo img { max-height: 54px; width: auto; margin-bottom: 16px; }
.footer-links { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 24px; }
.footer-links h3 { color: #FFFFFF; font-size: 18px; }
.footer-links a { display: block; color: rgba(234,243,255,.82); margin: 8px 0; }
.footer-links a:hover { color: #FFFFFF; }
.footer-note { max-width: 1200px; margin: 0 auto; padding: 20px; border-top: 1px solid rgba(234,243,255,.14); font-size: 14px; }
@media (max-width: 1080px) {
    .nav { gap: 14px; }
    .nav a, .nav-trigger { font-size: 14px; }
}
@media (max-width: 900px) {
    .header-inner { min-height: 68px; padding: 0 14px; gap: 10px; }
    .mobile-menu-btn { display: block; flex: 0 0 auto; }
    .nav-wrap { display: none; }
    .logo { flex: 1 1 auto; justify-content: center; }
    .logo img { max-height: 44px; }
    .header-action { flex: 0 0 auto; }
    .main-btn { min-height: 38px; padding: 0 18px; }
    .page-main { padding: 20px 14px 42px; }
    .grid-2, .grid-3, .grid-4, .split, .footer-inner { grid-template-columns: 1fr; }
    .footer-links { grid-template-columns: 1fr; }
    .section-head { display: block; }
    .slider-track { height: clamp(180px, 56vw, 330px); }
    .slider-arrow { width: 36px; height: 36px; font-size: 26px; }
    .slider-arrow.prev { left: 10px; }
    .slider-arrow.next { right: 10px; }
    .hero, .content-hero, .section-card, .notice-section { padding: 22px; border-radius: 18px; }
    .card, .zone-card, .info-card, .review-card, .faq-item { padding: 18px; }
}
@media (max-width: 420px) {
    .main-btn { padding: 0 14px; font-size: 14px; }
    .mobile-menu-btn { padding-left: 0; }
    .logo img { max-height: 40px; }
}