:root {
    --bg: #F4FBFF;
    --white: #FFFFFF;
    --pale: #EAF7FF;
    --pale-2: #F2FAFF;
    --blue: #1CA8F6;
    --bright: #38C7FF;
    --deep: #0877C9;
    --cyan: #7FE4FF;
    --ink: #223044;
    --muted: #5F7082;
    --navy: #082A46;
    --line: rgba(28,168,246,.14);
    --shadow: 0 16px 40px rgba(8,119,201,.09);
    --radius: 22px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
    padding-top: 132px;
}
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button, input, textarea { font: inherit; }
.container { width: min(1200px, calc(100% - 40px)); margin-inline: auto; }
.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 1000;
    background: rgba(255,255,255,.94);
    backdrop-filter: blur(12px);
    box-shadow: 0 8px 24px rgba(8,119,201,.08);
}
.header-inner {
    width: min(1200px, calc(100% - 40px));
    height: 74px;
    margin: auto;
    display: grid;
    grid-template-columns: 210px 1fr auto;
    align-items: center;
    gap: 28px;
}
.brand-logo { width: 172px; max-width: 100%; }
.brand-logo img { width: 100%; max-height: 54px; object-fit: contain; object-position: left center; }
.core-nav { display: flex; justify-content: center; gap: 8px; min-width: 0; }
.core-nav a {
    position: relative;
    padding: 10px 14px;
    color: #1D2A3A;
    border-radius: 999px;
    font-weight: 700;
    white-space: nowrap;
}
.core-nav a:hover, .core-nav a.active { color: var(--deep); background: var(--pale); }
.core-nav a.active::after { content: ""; position: absolute; left: 30%; right: 30%; bottom: 5px; height: 2px; border-radius: 2px; background: var(--blue); }
.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 24px;
    background: linear-gradient(135deg, #38C7FF 0%, #1CA8F6 48%, #0877C9 100%);
    color: #fff;
    border-radius: 999px;
    font-weight: 800;
    box-shadow: 0 12px 26px rgba(8,119,201,.18);
    transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 16px 30px rgba(8,119,201,.24); }
.header-register { white-space: nowrap; }
.channel-bar {
    position: fixed;
    top: 74px;
    left: 0;
    right: 0;
    z-index: 990;
    background: rgba(234,247,255,.94);
    border-top: 1px solid rgba(28,168,246,.08);
    border-bottom: 1px solid rgba(28,168,246,.12);
    backdrop-filter: blur(12px);
}
.channel-scroll {
    width: min(1200px, calc(100% - 40px));
    height: 58px;
    margin: auto;
    display: flex;
    align-items: center;
    gap: 8px;
    overflow-x: auto;
    scrollbar-width: thin;
    overscroll-behavior-inline: contain;
}
.channel-scroll a { flex: 0 0 auto; padding: 6px 12px; border-radius: 999px; background: rgba(255,255,255,.78); color: var(--muted); border: 1px solid transparent; font-size: 14px; }
.channel-scroll a:hover, .channel-scroll a.active { color: var(--deep); border-color: rgba(28,168,246,.28); background: #fff; }
.menu-toggle { display: none; width: 42px; height: 42px; border: 0; background: var(--pale); border-radius: 12px; padding: 10px; }
.menu-toggle span { display: block; height: 2px; background: var(--deep); margin: 5px 0; border-radius: 2px; }
.site-main { min-height: 60vh; }
.section { padding-block: 42px; }
.soft-section { background: linear-gradient(180deg, rgba(234,247,255,.72), rgba(244,251,255,.25)); }
.eyebrow { display: inline-block; color: var(--blue); font-size: 14px; font-weight: 800; letter-spacing: .12em; margin-bottom: 10px; }
h1, h2, h3, .section-title { color: var(--deep); line-height: 1.25; }
h1 { font-size: clamp(34px, 5vw, 58px); margin: 0 0 20px; }
h2 { font-size: clamp(25px, 3vw, 36px); margin: 0 0 14px; }
h3 { font-size: 21px; margin: 0 0 10px; }
p { margin: 0 0 16px; }
.text-link { color: var(--blue); font-weight: 800; }
.text-link:hover { color: var(--deep); }
.banner-slider {
    max-width: 1200px;
    margin: 24px auto 34px;
    border-radius: 22px;
    background: #FFFFFF;
    box-shadow: 0 16px 40px rgba(8,119,201,.10);
    overflow: hidden;
    position: relative;
    z-index: 1;
    aspect-ratio: 16 / 6.2;
}
.slides, .slide { position: absolute; inset: 0; }
.slide { opacity: 0; visibility: hidden; transition: opacity .45s ease; }
.slide.active { opacity: 1; visibility: visible; }
.banner-slider img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.slider-arrow { position: absolute; top: 50%; transform: translateY(-50%); z-index: 3; width: 44px; height: 44px; border: 0; border-radius: 50%; color: var(--deep); background: rgba(255,255,255,.86); box-shadow: 0 8px 22px rgba(8,119,201,.16); font-size: 32px; line-height: 1; cursor: pointer; }
.slider-arrow.prev { left: 18px; }
.slider-arrow.next { right: 18px; }
.slider-dots { position: absolute; z-index: 3; left: 50%; bottom: 16px; transform: translateX(-50%); display: flex; gap: 9px; }
.slider-dots button { width: 9px; height: 9px; border: 0; border-radius: 50%; background: rgba(8,119,201,.28); padding: 0; cursor: pointer; }
.slider-dots button.active { width: 26px; border-radius: 999px; background: var(--blue); }
.brand-intro { display: grid; grid-template-columns: 1.06fr .94fr; gap: 36px; align-items: center; }
.brand-intro-copy, .brand-intro-media, .inner-hero, .prose-card, .zone-card, .info-card, .review-card, .capsule-grid article, .platform-strip, .about-summary, .compliance-strip {
    background: #fff;
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}
.brand-intro-copy { padding: clamp(28px,4vw,48px); border-radius: var(--radius); }
.brand-intro-media { padding: 18px; border-radius: var(--radius); }
.brand-intro-media img { width: 100%; max-height: 420px; object-fit: contain; }
.section-heading { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 24px; }
.section-heading p { color: var(--muted); margin: 0; }
.section-index { flex: 0 0 auto; min-width: 58px; height: 34px; display: inline-flex; align-items: center; justify-content: center; border-radius: 999px; color: var(--deep); background: var(--pale); font-size: 13px; font-weight: 900; letter-spacing: .08em; }
.capsule-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.capsule-grid article { border-radius: 18px; padding: 22px; }
.capsule-grid p { color: var(--muted); min-height: 52px; }
.capsule-grid a { color: var(--blue); font-weight: 800; }
.platform-strip { border-radius: var(--radius); padding: 26px 34px; background: linear-gradient(135deg,#fff 0%,#EAF7FF 100%); }
.platform-strip p { margin: 0; font-size: 18px; }
.dashboard-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; }
.info-card { border-radius: 20px; padding: 25px; }
.info-card span { display: inline-flex; color: var(--blue); font-size: 30px; font-weight: 900; margin-bottom: 18px; }
.info-card p { color: var(--muted); margin: 0; }
.two-column-zone { display: grid; grid-template-columns: repeat(2,1fr); gap: 22px; }
.zone-card { border-radius: var(--radius); overflow: hidden; padding: 24px; }
.zone-card img { width: 100%; max-height: 250px; margin-bottom: 22px; object-fit: contain; background: #fff; border-radius: 16px; }
.media-card { display: grid; grid-template-columns: .9fr 1.1fr; gap: 24px; align-items: center; }
.media-card img { margin: 0; max-height: 320px; }
.text-card { display: flex; align-items: center; }
.service-points, .zone-card ul { padding-left: 22px; margin: 18px 0; }
.service-points li, .zone-card li { margin-bottom: 8px; }
.three-card-grid, .horizontal-content-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.horizontal-content-grid .zone-card { height: 100%; }
.app-section ul { color: var(--muted); }
.content-wall-two { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; }
.prose-card { padding: clamp(24px,4vw,38px); border-radius: var(--radius); }
.review-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.review-card { border-radius: 20px; padding: 24px; }
.review-card p { margin: 0; color: #35506a; }
.faq-list { display: grid; gap: 12px; }
.faq-list details { background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 10px 28px rgba(8,119,201,.06); overflow: hidden; }
.faq-list summary { cursor: pointer; list-style: none; padding: 18px 22px; color: var(--deep); font-weight: 800; position: relative; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 22px; top: 50%; transform: translateY(-50%); color: var(--blue); font-size: 24px; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { padding: 0 22px 20px; margin: 0; color: var(--muted); }
.about-summary { border-radius: var(--radius); padding: clamp(28px,5vw,56px); background: linear-gradient(135deg,#fff,#EDF8FF); }
.compliance-strip { margin-block: 42px 70px; padding: 28px 34px; border-radius: var(--radius); border-left: 5px solid var(--blue); }
.compliance-strip p { margin: 0; color: var(--muted); }
.inner-hero { margin-top: 28px; border-radius: 28px; padding: clamp(28px,5vw,58px); display: grid; grid-template-columns: 1.1fr .9fr; gap: 38px; align-items: center; background: linear-gradient(135deg,#fff 0%,#EDF8FF 100%); }
.inner-hero.text-only { grid-template-columns: 1fr; }
.inner-hero-copy p { color: var(--muted); font-size: 18px; max-width: 760px; }
.inner-hero-copy .main-btn { margin-top: 10px; }
.inner-hero-media img { width: 100%; max-height: 380px; object-fit: contain; }
.service-float { position: fixed; z-index: 800; top: 50%; right: max(16px, calc((100vw - 1360px)/2)); transform: translateY(-50%); width: 112px; padding: 10px; border-radius: 20px; background: rgba(255,255,255,.96); border: 1px solid var(--line); box-shadow: var(--shadow); display: grid; gap: 6px; }
.service-float a, .service-float button { border: 0; background: transparent; color: var(--deep); text-align: center; padding: 10px 8px; border-radius: 12px; cursor: pointer; font-size: 14px; }
.service-float a:hover, .service-float button:hover { background: var(--pale); }
.service-float .float-register { color: #fff; background: linear-gradient(135deg,#38C7FF,#0877C9); font-weight: 800; }
.mobile-drawer { position: fixed; z-index: 1200; inset: 0 auto 0 0; width: min(84vw,320px); background: #fff; transform: translateX(-102%); transition: transform .25s ease; box-shadow: 20px 0 50px rgba(8,42,70,.2); overflow-y: auto; }
.mobile-drawer.open { transform: translateX(0); }
.drawer-head { position: sticky; top: 0; z-index: 2; display: flex; align-items: center; justify-content: space-between; padding: 18px; background: #fff; border-bottom: 1px solid var(--line); }
.drawer-head img { width: 150px; max-height: 48px; object-fit: contain; }
.drawer-close { width: 40px; height: 40px; border: 0; border-radius: 12px; background: var(--pale); color: var(--deep); font-size: 28px; line-height: 1; }
.drawer-nav { padding: 12px 16px 32px; display: grid; grid-template-columns: repeat(2,1fr); gap: 8px; }
.drawer-nav a { padding: 11px 12px; border-radius: 12px; color: var(--muted); background: var(--pale-2); font-size: 14px; }
.drawer-nav a.active { color: #fff; background: var(--blue); }
.drawer-overlay { position: fixed; inset: 0; z-index: 1150; background: rgba(8,42,70,.42); opacity: 0; transition: opacity .22s ease; }
.drawer-overlay.show { opacity: 1; }
.mobile-bottom-nav { display: none; }
.site-footer { background: var(--navy); color: #EAF8FF; padding: 58px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3,1fr); gap: 36px; }
.footer-brand img { width: 170px; max-height: 58px; object-fit: contain; object-position: left; margin-bottom: 18px; filter: brightness(0) invert(1); }
.footer-brand p { color: rgba(234,248,255,.76); }
.site-footer h2 { color: #fff; font-size: 18px; }
.site-footer a { display: block; color: rgba(234,248,255,.82); margin: 7px 0; }
.site-footer a:hover { color: var(--cyan); }
.footer-note { border-top: 1px solid rgba(255,255,255,.12); margin-top: 34px; padding-top: 20px; display: flex; justify-content: space-between; gap: 30px; color: rgba(234,248,255,.68); font-size: 13px; }
.footer-note p { margin: 0; }
@media (max-width: 1380px) { .service-float { display: none; } }
@media (max-width: 980px) {
    .header-inner { grid-template-columns: 180px 1fr auto; gap: 18px; }
    .core-nav a { padding-inline: 10px; font-size: 14px; }
    .dashboard-grid { grid-template-columns: repeat(2,1fr); }
    .capsule-grid { grid-template-columns: repeat(2,1fr); }
    .brand-intro, .inner-hero { grid-template-columns: 1fr; }
    .inner-hero-media { order: -1; }
    .three-card-grid, .horizontal-content-grid { grid-template-columns: repeat(2,1fr); }
    .review-grid { grid-template-columns: repeat(2,1fr); }
    .media-card { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
    body { padding-top: 72px; padding-bottom: 74px; }
    .container { width: min(100% - 24px, 1200px); }
    .site-header { height: 72px; }
    .header-inner { width: calc(100% - 20px); height: 72px; grid-template-columns: 46px 1fr auto; gap: 10px; }
    .menu-toggle { display: block; }
    .brand-logo { width: 142px; justify-self: center; }
    .brand-logo img { object-position: center; max-height: 46px; }
    .core-nav, .channel-bar { display: none; }
    .header-register { min-height: 40px; padding: 0 17px; font-size: 14px; }
    .banner-slider { width: calc(100% - 24px); margin-top: 16px; margin-bottom: 22px; aspect-ratio: 16 / 8.5; border-radius: 16px; }
    .slider-arrow { width: 36px; height: 36px; font-size: 25px; }
    .slider-arrow.prev { left: 10px; }
    .slider-arrow.next { right: 10px; }
    .slider-dots { bottom: 10px; }
    .section { padding-block: 28px; }
    h1 { font-size: 34px; }
    h2 { font-size: 26px; }
    .brand-intro, .two-column-zone, .content-wall-two, .dashboard-grid, .capsule-grid, .three-card-grid, .horizontal-content-grid, .review-grid, .footer-grid { grid-template-columns: 1fr; }
    .brand-intro-copy, .brand-intro-media, .zone-card, .prose-card, .review-card { padding: 22px; }
    .capsule-grid p { min-height: 0; }
    .section-heading { gap: 10px; }
    .section-index { min-width: 50px; }
    .platform-strip { padding: 22px; }
    .platform-strip p { font-size: 16px; }
    .inner-hero { margin-top: 16px; padding: 24px; border-radius: 20px; gap: 22px; }
    .inner-hero-copy p { font-size: 16px; }
    .mobile-bottom-nav { position: fixed; z-index: 900; left: 10px; right: 10px; bottom: 8px; min-height: 58px; display: grid; grid-template-columns: repeat(4,1fr); align-items: center; background: rgba(255,255,255,.96); backdrop-filter: blur(12px); border: 1px solid var(--line); border-radius: 18px; box-shadow: 0 12px 32px rgba(8,42,70,.18); padding-bottom: env(safe-area-inset-bottom); }
    .mobile-bottom-nav a { text-align: center; color: var(--muted); font-size: 13px; font-weight: 800; padding: 12px 4px; }
    .mobile-bottom-nav a:hover { color: var(--deep); }
    .footer-note { flex-direction: column; }
    .site-footer { padding-bottom: 96px; }
    .compliance-strip { margin-bottom: 40px; padding: 24px; }
}
@media (max-width: 420px) {
    .brand-logo { width: 120px; }
    .header-register { padding-inline: 14px; }
    .drawer-nav { grid-template-columns: 1fr; }
    .slider-arrow { width: 32px; height: 32px; }
}