:root {
    --page-bg: #E6EBF2;
    --nav-bg: #F5F7FB;
    --white: #FFFFFF;
    --soft: #EEF2F7;
    --soft-deep: #DDE4EE;
    --blue: #289CFF;
    --nav-text: #4E5F7A;
    --text: #243447;
    --muted: #66788A;
    --hint: #8A9AAF;
    --footer: #243447;
    --footer-text: #EAF3FF;
    --card: rgba(255,255,255,0.92);
    --border: rgba(40,156,255,0.16);
    --shadow: 0 14px 36px rgba(56,92,138,0.12);
    --btn: linear-gradient(180deg, #32D1F6 0%, #27B9F4 35%, #249BFF 100%);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "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);
    border-bottom: 1px solid rgba(40,156,255,0.12);
    box-shadow: 0 10px 24px rgba(56,92,138,0.08);
}
.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 72px;
}
.logo, .drawer-logo { flex: 0 0 auto; }
.logo img { max-height: 52px; width: auto; }
.drawer-logo img { max-height: 46px; width: auto; }
.nav-wrap {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    justify-content: center;
}
.nav {
    display: flex;
    align-items: center;
    gap: 18px;
    white-space: nowrap;
    flex-wrap: nowrap;
}
.nav-link, .nav-more {
    position: relative;
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    border: 0;
    background: transparent;
    color: var(--nav-text);
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    padding: 0;
    font-family: inherit;
}
.nav-link:hover, .nav-more:hover, .nav-link.active {
    color: var(--blue);
}
.nav-link.active:after, .nav-more:hover:after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 4px;
    height: 3px;
    border-radius: 999px;
    background: var(--blue);
    box-shadow: 0 4px 10px rgba(40,156,255,0.24);
}
.header-action {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
}
.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 42px;
    padding: 11px 24px;
    border-radius: 999px;
    background: var(--btn);
    color: #FFFFFF;
    font-weight: 800;
    box-shadow: 0 12px 24px rgba(36,155,255,0.24);
    border: 0;
    transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 16px 30px rgba(36,155,255,0.30); }
.header-btn { min-width: 78px; padding: 10px 22px; }
.dropdown, .more-dropdown { position: relative; }
.dropdown-menu, .more-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    background: #FFFFFF;
    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;
    display: none;
}
.more-menu { right: 0; left: auto; min-width: 210px; }
.dropdown:hover .dropdown-menu, .more-dropdown:hover .more-menu, .more-dropdown.open .more-menu { display: block; }
.dropdown-menu a, .more-menu a {
    display: block;
    padding: 11px 14px;
    color: var(--nav-text);
    white-space: nowrap;
    border-radius: 10px;
    font-size: 14px;
}
.dropdown-menu a:hover, .more-menu a:hover { color: var(--blue); background: rgba(40,156,255,0.08); }
.mobile-menu-btn { display: none; }
.drawer-mask, .mobile-drawer { display: none; }
.site-main { padding-top: 0; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 22px; }
.hero-section {
    max-width: 1200px;
    margin: 28px auto 36px;
    border-radius: 22px;
    background: #FFFFFF;
    box-shadow: 0 18px 40px rgba(56,92,138,0.12);
    overflow: hidden;
    position: relative;
}
.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(300px, .95fr);
    gap: 28px;
    align-items: center;
    padding: 46px;
}
.inner-hero .hero-grid { padding: 42px; }
.eyebrow, .tag {
    display: inline-flex;
    align-items: center;
    color: var(--blue);
    background: rgba(40,156,255,0.10);
    border: 1px solid rgba(40,156,255,0.14);
    border-radius: 999px;
    padding: 5px 12px;
    font-size: 13px;
    font-weight: 800;
    margin-bottom: 12px;
}
h1, h2, h3, .section-title { color: var(--blue); line-height: 1.3; }
h1 { font-size: clamp(32px, 5vw, 54px); margin: 0 0 14px; }
h2, .section-title { font-size: clamp(24px, 3vw, 34px); margin: 0 0 14px; }
h3 { font-size: 20px; margin: 0 0 8px; }
p { margin: 0 0 14px; }
.lead { color: var(--muted); font-size: 18px; }
.hero-text { font-size: 16px; color: var(--text); }
.tag-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0 24px; }
.tag-row span {
    color: var(--blue);
    background: #EEF7FF;
    border: 1px solid rgba(40,156,255,0.14);
    border-radius: 999px;
    padding: 7px 13px;
    font-weight: 700;
    font-size: 14px;
}
.hero-media { background: var(--soft); border-radius: 20px; padding: 14px; border: 1px solid var(--border); }
.hero-media img, .content-img, .zone-card img, .app-feature img, .image-card img {
    max-width: 100%;
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 16px;
}
.section { margin: 42px auto; }
.section-head { max-width: 760px; margin-bottom: 22px; }
.section-head p { color: var(--muted); }
.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, .step-card, .notice-card, .faq-item, .image-card {
    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: 18px;
    padding: 22px;
}
.card h3, .zone-card h3, .info-card h3, .review-card h3, .step-card h3, .notice-card h3, .faq-item h3 { color: var(--blue); }
.card p, .zone-card p, .info-card p, .step-card p, .notice-card p, .faq-item p { color: var(--muted); }
.text-link { color: var(--blue); font-weight: 800; display: inline-flex; margin-top: 8px; }
.text-link:after { content: "›"; margin-left: 6px; }
.number {
    width: 34px;
    height: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: rgba(40,156,255,0.10);
    color: var(--blue);
    font-weight: 900;
    margin-bottom: 12px;
}
.feature-band {
    background: #FFFFFF;
    border: 1px solid var(--border);
    border-radius: 22px;
    padding: 28px;
    box-shadow: var(--shadow);
}
.split {
    display: grid;
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
    gap: 24px;
    align-items: center;
}
ul.clean-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
ul.clean-list li {
    position: relative;
    padding-left: 24px;
    color: var(--muted);
}
ul.clean-list li:before {
    content: "";
    position: absolute;
    left: 0;
    top: .72em;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--blue);
}
.review-card p { color: var(--text); }
.review-card strong { color: var(--blue); display: block; margin-bottom: 8px; }
.faq-list { display: grid; gap: 14px; }
.faq-item h3 { font-size: 18px; }
.legal-reminder {
    background: #DDE4EE;
    border: 1px solid rgba(40,156,255,0.18);
    border-radius: 20px;
    padding: 24px;
    color: var(--text);
}
.legal-reminder strong { color: var(--blue); }
.site-footer { background: var(--footer); color: var(--footer-text); margin-top: 56px; }
.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 42px 22px 28px;
    display: grid;
    grid-template-columns: 1.4fr repeat(3, minmax(130px, .6fr));
    gap: 28px;
}
.footer-brand img { max-height: 52px; width: auto; margin-bottom: 16px; }
.footer-brand p, .footer-bottom { color: rgba(234,243,255,0.82); }
.footer-col { display: grid; align-content: start; gap: 8px; }
.footer-col h3 { color: #FFFFFF; margin: 0 0 8px; }
.footer-col a { color: rgba(234,243,255,0.82); }
.footer-col a:hover { color: #FFFFFF; }
.footer-bottom { border-top: 1px solid rgba(234,243,255,0.12); max-width: 1200px; margin: 0 auto; padding: 16px 22px 24px; font-size: 14px; }
@media (max-width: 1100px) {
    .nav { gap: 13px; }
    .nav-link, .nav-more { font-size: 14px; }
    .header-inner { gap: 16px; }
}
@media (max-width: 940px) {
    .header-inner { min-height: 66px; padding: 0 14px; gap: 12px; }
    .nav-wrap { display: none; }
    .mobile-menu-btn {
        flex: 0 0 42px;
        display: inline-flex;
        width: 42px;
        height: 42px;
        align-items: center;
        justify-content: center;
        flex-direction: column;
        gap: 5px;
        border: 0;
        border-radius: 12px;
        background: rgba(40,156,255,0.10);
        cursor: pointer;
    }
    .mobile-menu-btn span { width: 20px; height: 2px; border-radius: 2px; background: var(--blue); }
    .logo { position: absolute; left: 50%; transform: translateX(-50%); }
    .logo img { max-height: 44px; }
    .header-action { margin-left: auto; }
    .header-btn { min-width: 66px; padding: 8px 16px; min-height: 38px; }
    .drawer-mask {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(36,52,71,0.42);
        opacity: 0;
        visibility: hidden;
        transition: opacity .24s ease, visibility .24s ease;
        z-index: 9998;
    }
    .mobile-drawer {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        width: 84vw;
        max-width: 320px;
        height: 100vh;
        background: #FFFFFF;
        z-index: 10001;
        transform: translateX(-105%);
        transition: transform .28s ease;
        box-shadow: 22px 0 40px rgba(36,52,71,0.18);
        overflow-y: auto;
    }
    body.drawer-open .drawer-mask { opacity: 1; visibility: visible; }
    body.drawer-open .mobile-drawer { transform: translateX(0); }
    .drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 18px; border-bottom: 1px solid rgba(40,156,255,0.12); }
    .drawer-close { width: 38px; height: 38px; border: 0; border-radius: 12px; background: rgba(40,156,255,0.10); color: var(--blue); font-size: 26px; cursor: pointer; line-height: 1; }
    .drawer-links { padding: 12px; display: grid; gap: 4px; }
    .drawer-links a { color: var(--nav-text); padding: 12px 14px; border-radius: 12px; font-weight: 700; }
    .drawer-links a:hover, .drawer-links a.active { color: var(--blue); background: rgba(40,156,255,0.08); }
    .hero-grid, .inner-hero .hero-grid, .split { grid-template-columns: 1fr; padding: 24px; }
    .hero-section { margin: 18px 14px 26px; }
    .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
    .section { margin: 34px auto; }
    .footer-inner { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
    .container { padding: 0 14px; }
    h1 { font-size: 30px; }
    h2, .section-title { font-size: 24px; }
    .card, .zone-card, .info-card, .review-card, .step-card, .notice-card, .faq-item, .image-card { padding: 18px; }
    .feature-band { padding: 20px; }
    .tag-row { gap: 8px; }
    .tag-row span { font-size: 13px; }
}