* { box-sizing: border-box; }
:root {
    --bg: #E6EBF2;
    --nav-bg: #F5F7FB;
    --surface: #FFFFFF;
    --surface-soft: #EEF2F7;
    --surface-deep: #DDE4EE;
    --blue: #289CFF;
    --blue-dark: #1E90F0;
    --nav-text: #4E5F7A;
    --text: #243447;
    --muted: #66788A;
    --hint: #8A9AAF;
    --footer: #243447;
    --footer-text: #EAF3FF;
    --border: rgba(40,156,255,0.16);
    --shadow: 0 14px 36px rgba(56,92,138,0.12);
    --radius: 20px;
}
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    background: var(--bg);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.78;
}
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
img { display: block; max-width: 100%; }
.container { width: min(1200px, calc(100% - 40px)); margin: 0 auto; }
.section-space { padding: 72px 0; }
.compact-top { padding-top: 20px; }
.soft-section { background: rgba(245,247,251,0.62); border-top: 1px solid rgba(255,255,255,0.7); border-bottom: 1px solid rgba(255,255,255,0.7); }
.site-header {
    position: sticky;
    top: 0;
    z-index: 9999;
    background: rgba(245,247,251,0.94);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 8px 24px rgba(56,92,138,0.10);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 72px; }
.logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.logo img { width: auto; max-width: 156px; max-height: 52px; object-fit: contain; }
.nav-wrap { flex: 1 1 auto; min-width: 0; display: flex; justify-content: center; }
.nav { display: flex; align-items: center; gap: clamp(12px, 1.55vw, 22px); white-space: nowrap; flex-wrap: nowrap; }
.nav-link, .nav-trigger {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    min-height: 72px;
    border: 0;
    padding: 0;
    background: none;
    color: var(--nav-text);
    cursor: pointer;
    font-weight: 650;
    font-size: 15px;
}
.nav-link::after, .nav-trigger::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 13px;
    left: 0;
    height: 3px;
    border-radius: 999px;
    background: var(--blue);
    transform: scaleX(0);
    transition: transform .22s ease;
}
.nav-link:hover, .nav-link.active, .nav-trigger:hover, .nav-trigger.active { color: var(--blue); }
.nav-link:hover::after, .nav-link.active::after, .nav-trigger:hover::after, .nav-trigger.active::after { transform: scaleX(1); }
.header-action { flex: 0 0 auto; display: flex; align-items: center; }
.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 92px;
    min-height: 42px;
    padding: 10px 24px;
    border-radius: 999px;
    background: linear-gradient(180deg, #32D1F6 0%, #27B9F4 35%, #249BFF 100%);
    color: #FFFFFF;
    box-shadow: 0 10px 24px rgba(36,155,255,0.25);
    font-weight: 750;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.main-btn:hover { background: linear-gradient(180deg, #48D9F7 0%, #1E90F0 100%); transform: translateY(-1px); box-shadow: 0 13px 28px rgba(36,155,255,0.30); }
.dropdown, .more-dropdown { position: relative; }
.dropdown-menu, .more-menu {
    position: absolute;
    top: calc(100% - 8px);
    left: 50%;
    min-width: 190px;
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translate(-50%, 8px);
    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;
    transition: opacity .18s ease, transform .18s ease, visibility .18s ease;
}
.dropdown:hover .dropdown-menu, .dropdown:focus-within .dropdown-menu, .dropdown.open .dropdown-menu { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.dropdown-menu a, .more-menu a { display: block; padding: 10px 14px; color: var(--nav-text); white-space: nowrap; border-radius: 10px; }
.dropdown-menu a:hover, .more-menu a:hover { color: var(--blue); background: rgba(40,156,255,0.08); }
.mobile-header { display: none; }
.menu-toggle { width: 42px; height: 42px; padding: 9px; border: 0; border-radius: 12px; background: #FFFFFF; box-shadow: 0 6px 18px rgba(56,92,138,0.10); }
.menu-toggle span { display: block; width: 100%; height: 2px; margin: 5px 0; background: var(--nav-text); border-radius: 999px; }
.mobile-drawer {
    position: fixed;
    z-index: 12000;
    top: 0;
    bottom: 0;
    left: 0;
    width: min(84vw, 320px);
    padding: 20px;
    overflow-y: auto;
    background: #FFFFFF;
    box-shadow: 24px 0 50px rgba(36,52,71,0.22);
    transform: translateX(-105%);
    transition: transform .25s ease;
}
.mobile-drawer.open { transform: translateX(0); }
.drawer-overlay { position: fixed; z-index: 11000; inset: 0; opacity: 0; background: rgba(36,52,71,0.42); transition: opacity .22s ease; }
.drawer-overlay.show { opacity: 1; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.drawer-close { width: 40px; height: 40px; border: 0; border-radius: 50%; background: var(--surface-soft); color: var(--nav-text); font-size: 28px; line-height: 1; }
.drawer-nav { display: grid; gap: 3px; padding: 18px 0; }
.drawer-nav a { padding: 11px 12px; border-radius: 10px; color: var(--nav-text); font-weight: 650; }
.drawer-nav a:hover { color: var(--blue); background: rgba(40,156,255,0.08); }
.banner-slider {
    width: min(1200px, calc(100% - 40px));
    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: 16 / 6.3;
}
.slides { position: relative; width: 100%; height: 100%; }
.slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .55s ease, visibility .55s ease; background: #FFFFFF; }
.slide.active { opacity: 1; visibility: visible; }
.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-control {
    position: absolute;
    z-index: 4;
    top: 50%;
    width: 44px;
    height: 44px;
    border: 1px solid rgba(255,255,255,.55);
    border-radius: 50%;
    background: rgba(36,52,71,.34);
    color: #FFFFFF;
    cursor: pointer;
    transform: translateY(-50%);
    backdrop-filter: blur(6px);
}
.slider-control:hover { background: rgba(36,52,71,.55); }
.slider-prev { left: 18px; }
.slider-next { right: 18px; }
.slider-dots { position: absolute; z-index: 4; right: 0; bottom: 15px; left: 0; display: flex; justify-content: center; gap: 9px; }
.slider-dot { width: 10px; height: 10px; padding: 0; border: 0; border-radius: 50%; background: rgba(255,255,255,.65); box-shadow: 0 2px 8px rgba(36,52,71,.25); cursor: pointer; }
.slider-dot.active { width: 28px; border-radius: 999px; background: var(--blue); }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 14px; color: var(--blue); font-weight: 750; letter-spacing: .08em; }
.eyebrow::before { content: ""; width: 28px; height: 2px; background: var(--blue); border-radius: 999px; }
h1, h2, h3, .section-title { margin-top: 0; color: var(--blue); line-height: 1.28; }
h1 { margin-bottom: 22px; font-size: clamp(34px, 5vw, 58px); letter-spacing: -.03em; }
h2 { margin-bottom: 16px; font-size: clamp(26px, 3.2vw, 38px); }
h3 { margin-bottom: 10px; font-size: 20px; }
p { margin: 0 0 18px; color: var(--muted); }
.lead { max-width: 720px; font-size: clamp(17px, 2vw, 20px); color: var(--text); }
.section-heading { margin-bottom: 30px; }
.section-heading.centered { max-width: 760px; margin-right: auto; margin-bottom: 38px; margin-left: auto; text-align: center; }
.section-heading.centered p { margin-right: auto; margin-left: auto; }
.section-index { display: inline-flex; margin-bottom: 8px; color: var(--blue); font-size: 14px; font-weight: 800; letter-spacing: .16em; }
.text-link { display: inline-flex; align-items: center; gap: 8px; color: var(--blue); font-weight: 750; }
.text-link::after { content: "→"; transition: transform .18s ease; }
.text-link:hover::after { transform: translateX(4px); }
.hero-links { display: flex; flex-wrap: wrap; gap: 18px 30px; margin-top: 26px; }
.split-layout { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(320px, .92fr); align-items: center; gap: 46px; }
.hero-split { min-height: 460px; }
.media-card, .content-panel, .info-card, .review-card, .zone-card, .app-card, .entry-card, .faq-item {
    background: rgba(255,255,255,0.92);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}
.media-card { margin: 0; padding: 12px; border-radius: 24px; overflow: hidden; }
.content-img, .zone-card img, .app-section img, .banner-slider img { max-width: 100%; height: auto; }
.media-card .content-img { width: 100%; max-height: 430px; object-fit: contain; border-radius: 16px; background: #FFFFFF; }
.narrow-copy { max-width: 960px; }
.narrow-copy p { font-size: 17px; color: var(--text); }
.feature-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 22px; }
.info-card { position: relative; min-height: 230px; padding: 26px; border-radius: 18px; }
.number-badge { display: inline-flex; align-items: center; justify-content: center; min-width: 42px; height: 30px; margin-bottom: 22px; border-radius: 999px; background: rgba(40,156,255,.10); color: var(--blue); font-size: 13px; font-weight: 800; }
.two-column-cards { display: grid; grid-template-columns: 1.15fr .85fr; gap: 24px; }
.content-panel { padding: clamp(26px, 4vw, 44px); border-radius: 22px; }
.accent-panel { background: linear-gradient(145deg, rgba(255,255,255,.96), rgba(238,242,247,.94)); }
.step-list { counter-reset: steps; display: grid; gap: 22px; margin: 0; padding: 0; list-style: none; }
.step-list li { position: relative; padding-left: 58px; }
.step-list li::before { counter-increment: steps; content: counter(steps, decimal-leading-zero); position: absolute; top: 0; left: 0; display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; background: rgba(40,156,255,.10); color: var(--blue); font-weight: 800; }
.step-list span { display: block; margin-bottom: 5px; color: var(--text); font-weight: 800; }
.step-list p { margin-bottom: 0; }
.check-list { display: grid; gap: 14px; margin: 0 0 24px; padding: 0; list-style: none; }
.check-list li { position: relative; padding-left: 28px; color: var(--text); }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--blue); font-weight: 900; }
.notice-text { padding: 16px 18px; border-radius: 14px; background: rgba(40,156,255,.08); color: var(--nav-text); font-size: 14px; }
.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.review-card { margin: 0; padding: 26px; border-radius: 18px; }
.review-card p { color: var(--text); }
.review-card footer { color: var(--hint); font-size: 13px; }
.faq-wrap { max-width: 940px; }
.faq-list { display: grid; gap: 14px; }
.faq-item { border-radius: 16px; overflow: hidden; }
.faq-item summary { position: relative; padding: 20px 56px 20px 22px; color: var(--text); font-weight: 800; cursor: pointer; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; top: 50%; right: 22px; color: var(--blue); font-size: 24px; transform: translateY(-50%); }
.faq-item[open] summary::after { content: "−"; }
.faq-item p { padding: 0 22px 20px; }
.welcome-section { padding: 16px 0 72px; }
.welcome-card { display: grid; grid-template-columns: 1.2fr .8fr; gap: 36px; align-items: center; padding: clamp(28px, 5vw, 56px); border-radius: 26px; background: rgba(255,255,255,.92); border: 1px solid var(--border); box-shadow: var(--shadow); }
.welcome-card img { width: 100%; max-height: 330px; object-fit: contain; border-radius: 18px; background: #FFFFFF; }
.entry-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 20px; }
.entry-card { padding: 24px; border-radius: 17px; }
.entry-card p { min-height: 78px; }
.zone-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 22px; }
.zone-card { overflow: hidden; border-radius: 20px; }
.zone-card figure { margin: 0; padding: 12px 12px 0; }
.zone-card img { width: 100%; aspect-ratio: 16/9; object-fit: contain; border-radius: 14px; background: #FFFFFF; }
.zone-card .zone-body { padding: 22px; }
.electronic-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 20px; }
.electronic-grid .zone-card img { aspect-ratio: 4/3; }
.app-section { display: grid; grid-template-columns: .9fr 1.1fr; gap: 34px; align-items: center; }
.app-visuals { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.app-card { margin: 0; padding: 12px; border-radius: 20px; }
.app-card img { width: 100%; height: 100%; min-height: 220px; object-fit: contain; border-radius: 14px; background: #FFFFFF; }
.point-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 24px; }
.point-item { padding: 16px; border-radius: 14px; background: rgba(40,156,255,.08); color: var(--nav-text); font-weight: 650; }
.rule-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.rule-list { display: grid; gap: 15px; }
.rule-item { padding: 20px; border-radius: 16px; background: rgba(255,255,255,.9); border: 1px solid var(--border); }
.rule-item strong { display: block; margin-bottom: 5px; color: var(--blue); }
.experience-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 22px; }
.experience-item { padding: 26px; border-left: 4px solid var(--blue); border-radius: 0 17px 17px 0; background: rgba(255,255,255,.88); box-shadow: 0 10px 28px rgba(56,92,138,.08); }
.site-footer { padding-top: 56px; background: var(--footer); color: var(--footer-text); }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 36px; }
.site-footer h2 { margin-bottom: 16px; color: #FFFFFF; font-size: 17px; }
.site-footer a:not(.logo) { display: block; margin: 8px 0; color: rgba(234,243,255,.78); }
.site-footer a:hover { color: #FFFFFF; }
.footer-brand p { max-width: 420px; color: rgba(234,243,255,.72); }
.footer-logo img { filter: brightness(0) invert(1); }
.compliance-bar { display: flex; justify-content: space-between; gap: 30px; margin-top: 38px; padding: 24px 0; border-top: 1px solid rgba(234,243,255,.14); }
.compliance-bar p { margin: 0; color: rgba(234,243,255,.66); font-size: 13px; }
.compliance-bar p:first-child { max-width: 880px; }
@media (max-width: 1080px) {
    .desktop-header { display: none; }
    .mobile-header { display: flex; min-height: 68px; }
    .mobile-header > * { flex: 0 0 auto; }
    .mobile-logo { position: absolute; left: 50%; transform: translateX(-50%); }
    .mobile-logo img { max-width: 126px; max-height: 44px; }
    .mobile-register { min-width: 76px; min-height: 38px; padding: 8px 18px; }
    .feature-grid, .entry-grid, .electronic-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .zone-grid, .review-grid, .experience-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
    .footer-grid > div:last-child { grid-column: 2 / 4; }
}
@media (max-width: 820px) {
    .container, .banner-slider { width: min(100% - 28px, 1200px); }
    .section-space { padding: 56px 0; }
    .split-layout, .welcome-card, .two-column-cards, .app-section, .rule-layout { grid-template-columns: 1fr; }
    .hero-split { min-height: 0; }
    .media-card { max-width: 620px; }
    .welcome-card img { max-height: 280px; }
    .app-visuals { order: 2; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
    .footer-grid > div:last-child { grid-column: auto; }
    .compliance-bar { flex-direction: column; gap: 12px; }
}
@media (max-width: 600px) {
    .container, .banner-slider { width: min(100% - 20px, 1200px); }
    .header-inner { min-height: 64px; }
    .mobile-register { min-width: 68px; padding: 7px 15px; font-size: 14px; }
    .menu-toggle { width: 40px; height: 40px; }
    .banner-slider { margin-top: 16px; margin-bottom: 24px; border-radius: 14px; aspect-ratio: 16 / 8.8; }
    .slider-control { width: 38px; height: 38px; }
    .slider-prev { left: 9px; }
    .slider-next { right: 9px; }
    .slider-dots { bottom: 9px; }
    .section-space { padding: 44px 0; }
    h1 { font-size: 34px; }
    h2 { font-size: 27px; }
    .feature-grid, .entry-grid, .zone-grid, .electronic-grid, .review-grid, .experience-grid, .point-grid { grid-template-columns: 1fr; }
    .info-card, .entry-card { min-height: 0; }
    .entry-card p { min-height: 0; }
    .app-visuals { grid-template-columns: 1fr; }
    .app-card img { min-height: 180px; }
    .content-panel, .welcome-card { padding: 24px; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-grid > div:last-child { grid-column: auto; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition-duration: .01ms !important; }
}