:root {
    --bg: #E6EBF2;
    --surface: #FFFFFF;
    --surface-soft: #F5F7FB;
    --surface-alt: #EEF2F7;
    --surface-deep: #DDE4EE;
    --primary: #289CFF;
    --nav: #4E5F7A;
    --text: #243447;
    --muted: #66788A;
    --hint: #8A9AAF;
    --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%);
    --radius-lg: 24px;
    --radius-md: 18px;
    --radius-sm: 12px;
    --header-height: 76px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    background: var(--bg);
    color: var(--text);
    font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; }
button { color: inherit; }
.site-main { min-height: 65vh; padding-top: var(--header-height); }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.section { padding: 64px 0; }
.section-compact { padding: 44px 0; }
.section-head { max-width: 760px; margin: 0 auto 30px; text-align: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 10px; color: var(--primary); font-weight: 700; letter-spacing: .06em; }
h1, h2, h3, .section-title { color: var(--primary); line-height: 1.3; }
h1 { margin: 0 0 18px; font-size: clamp(2rem, 4vw, 3.35rem); }
h2 { margin: 0 0 16px; font-size: clamp(1.65rem, 3vw, 2.35rem); }
h3 { margin: 0 0 10px; font-size: 1.18rem; }
p { margin: 0 0 14px; }
.lead { color: var(--muted); font-size: 1.08rem; }
.muted { color: var(--muted); }
.hint { color: var(--hint); }
.text-link { color: var(--primary); font-weight: 700; }
.text-link:hover { text-decoration: underline; }

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 9000;
    background: rgba(245, 247, 251, .96);
    border-bottom: 1px solid rgba(78, 95, 122, .08);
    box-shadow: 0 8px 28px rgba(56, 92, 138, .08);
    backdrop-filter: blur(14px);
}
.header-inner {
    width: min(1240px, calc(100% - 32px));
    min-height: var(--header-height);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}
.logo { flex: 0 0 auto; display: inline-flex; align-items: center; }
.logo img { max-height: 48px; width: auto; }
.nav-wrap { flex: 1 1 auto; min-width: 0; display: flex; justify-content: center; }
.nav { display: flex; align-items: center; gap: clamp(13px, 1.5vw, 22px); white-space: nowrap; flex-wrap: nowrap; }
.nav > a, .dropdown-toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    height: 76px;
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--nav);
    cursor: pointer;
    font-weight: 650;
}
.nav > a::after, .dropdown > .dropdown-toggle::after, .more-dropdown > .dropdown-toggle::after {
    content: "";
    position: absolute;
    left: 50%;
    right: 50%;
    bottom: 11px;
    height: 3px;
    border-radius: 999px;
    background: var(--primary);
    transition: .22s ease;
}
.nav > a:hover, .nav > a.active, .dropdown:hover > .dropdown-toggle, .more-dropdown:hover > .dropdown-toggle,
.dropdown.active > .dropdown-toggle, .more-dropdown.active > .dropdown-toggle { color: var(--primary); }
.nav > a:hover::after, .nav > a.active::after, .dropdown:hover > .dropdown-toggle::after,
.more-dropdown:hover > .dropdown-toggle::after, .dropdown.active > .dropdown-toggle::after,
.more-dropdown.active > .dropdown-toggle::after { left: 0; right: 0; }
.dropdown, .more-dropdown { position: relative; }
.dropdown-menu, .more-menu {
    position: absolute;
    top: calc(100% - 8px);
    left: 50%;
    min-width: 190px;
    padding: 9px;
    transform: translate(-50%, 10px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    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: .2s ease;
}
.dropdown-menu a, .more-menu a { display: block; padding: 10px 13px; border-radius: 9px; color: var(--nav); white-space: nowrap; }
.dropdown-menu a:hover, .more-menu a:hover { color: var(--primary); background: rgba(40,156,255,0.08); }
.dropdown:hover .dropdown-menu, .more-dropdown:hover .more-menu,
.dropdown.menu-open .dropdown-menu, .more-dropdown.menu-open .more-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translate(-50%, 0);
}
.header-action { flex: 0 0 auto; display: flex; align-items: center; }
.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 11px 24px;
    border: 0;
    border-radius: 999px;
    background: var(--button);
    color: #FFFFFF;
    font-weight: 800;
    box-shadow: 0 10px 22px rgba(36, 155, 255, .25);
    transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 26px rgba(36, 155, 255, .32); }
.header-btn { min-width: 88px; }
.mobile-menu-btn { display: none; width: 44px; height: 44px; border: 0; border-radius: 12px; background: #FFFFFF; box-shadow: 0 6px 18px rgba(56,92,138,.1); cursor: pointer; }
.mobile-menu-btn span { display: block; width: 21px; height: 2px; margin: 4px auto; border-radius: 2px; background: var(--nav); }

.drawer-overlay { position: fixed; inset: 0; z-index: 10010; background: rgba(22, 38, 58, .42); opacity: 0; transition: .22s ease; }
.drawer-overlay.is-visible { opacity: 1; }
.mobile-drawer {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 10020;
    width: min(84vw, 320px);
    height: 100dvh;
    overflow-y: auto;
    transform: translateX(-102%);
    background: var(--surface-soft);
    box-shadow: 20px 0 50px rgba(26, 47, 74, .24);
    transition: transform .26s ease;
}
.mobile-drawer.is-open { transform: translateX(0); }
.drawer-head { position: sticky; top: 0; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px; background: rgba(245,247,251,.97); border-bottom: 1px solid rgba(78,95,122,.1); }
.drawer-logo img { max-height: 44px; width: auto; }
.drawer-close { width: 40px; height: 40px; border: 0; border-radius: 50%; background: #FFFFFF; color: var(--nav); font-size: 1.7rem; line-height: 1; cursor: pointer; }
.drawer-nav { display: grid; gap: 6px; padding: 14px 16px 28px; }
.drawer-nav a { padding: 12px 14px; border-radius: 10px; color: var(--nav); font-weight: 650; }
.drawer-nav a:hover { color: var(--primary); background: rgba(40,156,255,.08); }

.banner-slider {
    width: min(1200px, calc(100% - 40px));
    margin: 28px auto 36px;
    border-radius: 22px;
    background: #FFFFFF;
    box-shadow: 0 18px 40px rgba(56,92,138,0.12);
    overflow: hidden;
    position: relative;
    z-index: 1;
    aspect-ratio: 16 / 5.4;
    min-height: 300px;
}
.banner-track { position: relative; width: 100%; height: 100%; }
.banner-slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .5s ease; }
.banner-slide.is-active { opacity: 1; visibility: visible; }
.banner-slide img { width: 100%; height: 100%; object-fit: contain; background: #FFFFFF; }
.banner-overlay { position: absolute; inset: 0; display: flex; align-items: center; padding: clamp(28px, 5vw, 70px); pointer-events: none; background: linear-gradient(90deg, rgba(20, 48, 79, .56), rgba(20,48,79,.12) 50%, transparent 78%); }
.banner-copy { max-width: 550px; color: #FFFFFF; text-shadow: 0 2px 16px rgba(16,35,55,.35); }
.banner-copy h1 { color: #FFFFFF; font-size: clamp(1.8rem, 4vw, 3.4rem); }
.banner-copy p { max-width: 520px; font-size: clamp(.98rem, 1.6vw, 1.14rem); }
.slider-arrow { position: absolute; top: 50%; z-index: 4; width: 44px; height: 44px; border: 0; border-radius: 50%; transform: translateY(-50%); background: rgba(255,255,255,.9); color: var(--primary); box-shadow: 0 10px 24px rgba(30,66,105,.2); cursor: pointer; font-size: 1.35rem; }
.slider-prev { left: 16px; }
.slider-next { right: 16px; }
.slider-dots { position: absolute; left: 50%; bottom: 14px; z-index: 4; display: flex; gap: 8px; transform: translateX(-50%); }
.slider-dot { width: 10px; height: 10px; padding: 0; border: 0; border-radius: 50%; background: rgba(255,255,255,.58); box-shadow: 0 2px 6px rgba(30,50,70,.15); cursor: pointer; }
.slider-dot.is-active { width: 28px; border-radius: 999px; background: #FFFFFF; }

.hero-page { padding: 68px 0 40px; }
.hero-shell { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(300px, .88fr); gap: 42px; align-items: center; padding: clamp(26px, 5vw, 54px); border-radius: var(--radius-lg); background: linear-gradient(135deg, rgba(255,255,255,.98), rgba(238,242,247,.94)); border: 1px solid var(--border); box-shadow: var(--shadow); }
.hero-copy .main-btn { margin-top: 8px; }
.hero-visual { min-height: 280px; display: grid; place-items: center; padding: 16px; border-radius: 20px; background: #FFFFFF; border: 1px solid rgba(40,156,255,.12); }
.hero-visual img { width: 100%; max-height: 430px; object-fit: contain; }

.card, .zone-card, .info-card, .review-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: var(--radius-md);
}
.card { padding: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.quick-card { display: flex; flex-direction: column; min-height: 190px; }
.quick-card .text-link { margin-top: auto; }
.feature-list { display: grid; gap: 14px; margin: 22px 0 0; padding: 0; list-style: none; }
.feature-list li { position: relative; padding-left: 30px; color: var(--muted); }
.feature-list li::before { content: "✓"; position: absolute; left: 0; top: 0; display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: rgba(40,156,255,.12); color: var(--primary); font-weight: 900; }
.number-list { counter-reset: steps; display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; }
.number-list li { counter-increment: steps; position: relative; min-height: 48px; padding-left: 58px; color: var(--muted); }
.number-list li::before { content: counter(steps, decimal-leading-zero); position: absolute; left: 0; top: -2px; color: var(--primary); font-size: 1.25rem; font-weight: 900; }
.split-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .86fr); gap: 32px; align-items: center; }
.split-layout.reverse .split-media { order: -1; }
.split-media { min-height: 300px; display: grid; place-items: center; padding: 16px; border-radius: var(--radius-md); background: #FFFFFF; border: 1px solid var(--border); box-shadow: var(--shadow); }
.split-media img, .content-img, .zone-card img, .app-section img { max-width: 100%; height: auto; object-fit: contain; }
.zone-card { overflow: hidden; }
.zone-card .zone-image { height: 210px; display: grid; place-items: center; padding: 14px; background: #FFFFFF; border-bottom: 1px solid var(--border); }
.zone-card .zone-image img { width: 100%; height: 100%; object-fit: contain; }
.zone-card .zone-body { padding: 22px; }
.review-card { padding: 24px; }
.review-card blockquote { margin: 0 0 14px; color: var(--text); }
.review-card cite { color: var(--hint); font-style: normal; font-size: .92rem; }
.notice-panel { padding: 28px; border-radius: var(--radius-md); background: linear-gradient(135deg, rgba(40,156,255,.1), rgba(255,255,255,.85)); border: 1px solid var(--border); }
.tag-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0; }
.tag { display: inline-flex; padding: 7px 12px; border-radius: 999px; background: rgba(40,156,255,.1); color: var(--primary); font-weight: 700; }
.faq-list { display: grid; gap: 13px; }
.faq-item { overflow: hidden; border: 1px solid var(--border); border-radius: 14px; background: rgba(255,255,255,.92); }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 20px; border: 0; background: transparent; color: var(--text); text-align: left; font-weight: 800; cursor: pointer; }
.faq-question::after { content: "+"; color: var(--primary); font-size: 1.35rem; }
.faq-item.is-open .faq-question::after { content: "−"; }
.faq-answer { display: none; padding: 0 20px 18px; color: var(--muted); }
.faq-item.is-open .faq-answer { display: block; }
.cta-panel { display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: 30px; border-radius: var(--radius-lg); background: #FFFFFF; border: 1px solid var(--border); box-shadow: var(--shadow); }

.site-footer { background: #243447; color: #EAF3FF; }
.footer-inner { width: min(1180px, calc(100% - 40px)); margin: 0 auto; display: grid; grid-template-columns: 1.15fr 1.85fr; gap: 60px; padding: 56px 0 34px; }
.footer-brand img { max-height: 48px; width: auto; margin-bottom: 18px; filter: drop-shadow(0 6px 18px rgba(0,0,0,.15)); }
.footer-brand p { max-width: 430px; color: rgba(234,243,255,.76); }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.footer-links h3 { color: #EAF3FF; }
.footer-links a { display: block; margin: 8px 0; color: rgba(234,243,255,.76); }
.footer-links a:hover { color: #FFFFFF; }
.compliance-note { border-top: 1px solid rgba(234,243,255,.12); border-bottom: 1px solid rgba(234,243,255,.12); }
.compliance-note p { width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 18px 0; color: rgba(234,243,255,.7); font-size: .92rem; }
.footer-bottom { width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 18px 0 24px; color: rgba(234,243,255,.62); font-size: .9rem; }

@media (max-width: 1100px) {
    .nav { gap: 14px; }
    .nav-priority-low { display: none !important; }
    .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
    :root { --header-height: 68px; }
    .header-inner { min-height: var(--header-height); width: min(100% - 20px, 760px); gap: 10px; }
    .nav-wrap { display: none; }
    .mobile-menu-btn { display: inline-block; flex: 0 0 auto; }
    .logo { position: absolute; left: 50%; transform: translateX(-50%); }
    .logo img { max-height: 42px; max-width: 130px; }
    .header-btn { min-width: 76px; min-height: 40px; padding: 9px 17px; }
    .hero-shell, .split-layout { grid-template-columns: 1fr; }
    .hero-visual { min-height: 230px; }
    .split-layout.reverse .split-media { order: 0; }
    .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-inner { grid-template-columns: 1fr; gap: 34px; }
    .banner-slider { aspect-ratio: 16 / 7.5; min-height: 320px; }
}
@media (max-width: 640px) {
    .container, .footer-inner, .compliance-note p, .footer-bottom { width: min(100% - 24px, 560px); }
    .section { padding: 46px 0; }
    .section-compact { padding: 34px 0; }
    .banner-slider { width: calc(100% - 20px); margin-top: 16px; border-radius: 16px; aspect-ratio: 4 / 3; min-height: 340px; }
    .banner-overlay { align-items: flex-end; padding: 24px 22px 54px; background: linear-gradient(0deg, rgba(20,48,79,.66), rgba(20,48,79,.12) 70%); }
    .banner-copy { max-width: 100%; }
    .slider-arrow { width: 38px; height: 38px; }
    .slider-prev { left: 10px; }
    .slider-next { right: 10px; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .hero-page { padding-top: 36px; }
    .hero-shell { padding: 24px 20px; gap: 26px; }
    .hero-visual { min-height: 190px; }
    .zone-card .zone-image { height: 190px; }
    .cta-panel { align-items: flex-start; flex-direction: column; }
    .footer-links { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 390px) {
    .header-inner { width: calc(100% - 14px); }
    .logo img { max-width: 112px; }
    .header-btn { min-width: 68px; padding-inline: 13px; }
    .mobile-menu-btn { width: 40px; height: 40px; }
    .footer-links { grid-template-columns: 1fr; }
}