:root {
    --page: #EAF2FB;
    --surface: #FFFFFF;
    --soft: #F4F8FF;
    --soft-2: #EDF5FF;
    --soft-3: #E1ECF8;
    --blue: #2FA8F7;
    --blue-light: #45C7FF;
    --blue-dark: #137CD8;
    --text: #24364F;
    --muted: #5D718A;
    --line: rgba(47,168,247,.14);
    --footer: #102B46;
    --shadow: 0 20px 60px rgba(35, 86, 130, .12);
    --radius-xl: 32px;
    --radius-lg: 24px;
    --radius-md: 18px;
    --header-height: 76px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body { margin: 0; font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif; background: var(--page); color: var(--text); line-height: 1.78; overflow-x: hidden; }
a, button { touch-action: manipulation; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
img { display: block; max-width: 100%; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 20000; background: #fff; color: var(--blue-dark); padding: 10px 16px; border-radius: 10px; }
.skip-link:focus { top: 12px; }
.site-header { position: fixed; inset: 0 0 auto 0; z-index: 9000; height: var(--header-height); background: rgba(255,255,255,.92); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.desktop-header { height: 100%; display: grid; grid-template-columns: 180px 1fr 120px; align-items: center; gap: 22px; }
.brand-logo img { width: 148px; height: 48px; object-fit: contain; }
.core-nav { display: flex; justify-content: center; align-items: stretch; height: 100%; gap: 6px; white-space: nowrap; }
.core-nav a { position: relative; display: grid; place-items: center; min-width: 88px; padding: 0 16px; color: var(--muted); font-weight: 700; }
.core-nav a:hover, .core-nav a.is-active { color: var(--blue-dark); background: rgba(47,168,247,.06); }
.core-nav a.is-active::after { content: ""; position: absolute; left: 28%; right: 28%; bottom: 9px; height: 3px; border-radius: 999px; background: var(--blue); }
.main-btn { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 11px 24px; background: linear-gradient(135deg, #45C7FF 0%, #2FA8F7 48%, #137CD8 100%); color: #fff; border: 0; border-radius: 999px; box-shadow: 0 12px 26px rgba(19,124,216,.18); font-weight: 800; cursor: pointer; }
.main-btn:hover { transform: translateY(-1px); box-shadow: 0 15px 30px rgba(19,124,216,.24); }
.header-register { justify-self: end; min-width: 94px; }
.mobile-header { display: none; }
.channel-bar { position: fixed; inset: var(--header-height) 0 auto 0; z-index: 7000; height: 54px; background: rgba(244,248,255,.94); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.channel-scroll { display: flex; align-items: center; gap: 8px; height: 100%; overflow-x: auto; scrollbar-width: none; }
.channel-scroll::-webkit-scrollbar { display: none; }
.channel-scroll a { flex: 0 0 auto; padding: 7px 13px; border-radius: 999px; color: var(--muted); font-size: 14px; line-height: 1.2; }
.channel-scroll a:hover, .channel-scroll a.is-active { color: #fff; background: var(--blue); }
.site-main { min-height: 70vh; padding-top: 150px; }
.section-shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto 28px; }
.section-block { padding: 54px 0; }
.section-block.is-soft { background: rgba(255,255,255,.38); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 24px; }
.section-heading > div { max-width: 760px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--blue); font-weight: 800; letter-spacing: .08em; font-size: 13px; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 22px; height: 3px; border-radius: 999px; background: var(--blue); }
h1, h2, h3 { margin: 0; color: var(--blue-dark); line-height: 1.3; }
h1 { font-size: clamp(34px, 5vw, 58px); letter-spacing: -.03em; }
h2 { font-size: clamp(27px, 3.5vw, 38px); }
h3 { font-size: 20px; }
p { margin: 0; }
.section-heading p { margin-top: 10px; color: var(--muted); }
.text-link { color: var(--blue-dark); font-weight: 800; display: inline-flex; align-items: center; gap: 6px; }
.text-link::after { content: "→"; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(4px); }
.breadcrumb { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 14px; margin-bottom: 14px; }
.breadcrumb a { color: var(--blue-dark); }
.page-hero { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 36px; min-height: 430px; padding: 54px; background: linear-gradient(135deg, #fff 0%, #F7FBFF 58%, #EAF5FF 100%); border: 1px solid var(--line); border-radius: var(--radius-xl); box-shadow: var(--shadow); overflow: hidden; }
.page-hero__copy p { max-width: 680px; margin-top: 18px; color: var(--muted); font-size: 17px; }
.hero-links { display: flex; align-items: center; gap: 18px; margin-top: 26px; }
.page-hero__visual { min-width: 0; height: 320px; display: grid; place-items: center; border-radius: 26px; background: #fff; border: 1px solid var(--line); overflow: hidden; }
.page-hero__visual img { width: 100%; height: 100%; object-fit: contain; }
.banner-slider { position: relative; z-index: 1; border-radius: 34px; padding: 16px; background: #fff; box-shadow: var(--shadow); overflow: hidden; }
.slider-viewport { position: relative; aspect-ratio: 16 / 6.35; border-radius: 24px; overflow: hidden; background: var(--soft-3); }
.slide { position: absolute; inset: 0; opacity: 0; pointer-events: none; transition: opacity .45s ease; }
.slide.is-active { opacity: 1; pointer-events: auto; }
.slide img { width: 100%; height: 100%; object-fit: contain; background: var(--soft-2); }
.slider-arrow { position: absolute; z-index: 3; top: 50%; transform: translateY(-50%); width: 48px; height: 48px; border: 1px solid rgba(255,255,255,.7); border-radius: 50%; color: var(--blue-dark); background: rgba(255,255,255,.88); box-shadow: 0 10px 28px rgba(24,74,120,.16); cursor: pointer; }
.slider-arrow.prev { left: 28px; }
.slider-arrow.next { right: 28px; }
.slider-dots { position: absolute; z-index: 3; left: 50%; bottom: 26px; transform: translateX(-50%); display: flex; gap: 8px; }
.slider-dot { width: 10px; height: 10px; padding: 0; border: 0; border-radius: 999px; background: rgba(255,255,255,.76); cursor: pointer; box-shadow: 0 0 0 1px rgba(19,124,216,.15); }
.slider-dot.is-active { width: 28px; background: var(--blue); }
.brand-intro { display: grid; grid-template-columns: .9fr 1.1fr; gap: 32px; align-items: center; padding: 42px; border-radius: var(--radius-xl); background: #fff; border: 1px solid var(--line); }
.brand-intro__image { height: 320px; border-radius: 24px; overflow: hidden; background: var(--soft); }
.brand-intro__image img { width: 100%; height: 100%; object-fit: contain; }
.brand-intro__copy p { color: var(--muted); margin-top: 14px; }
.quick-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.quick-card, .info-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 24px; box-shadow: 0 14px 38px rgba(41,94,138,.07); }
.quick-card { display: flex; flex-direction: column; min-height: 198px; }
.quick-card p, .info-card p { color: var(--muted); margin: 10px 0 18px; }
.quick-card .text-link { margin-top: auto; }
.notice-strip { display: grid; grid-template-columns: auto 1fr; gap: 18px; align-items: center; padding: 22px 28px; border-radius: 22px; background: linear-gradient(90deg, #DFF2FF 0%, #F8FCFF 100%); border: 1px solid var(--line); }
.notice-strip strong { color: var(--blue-dark); }
.notice-strip p { color: var(--muted); }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.card-tag { display: inline-flex; padding: 5px 10px; border-radius: 999px; background: var(--soft-2); color: var(--blue-dark); font-size: 12px; font-weight: 800; margin-bottom: 12px; }
.split-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.content-panel { display: grid; grid-template-columns: 1fr .85fr; gap: 24px; min-height: 380px; padding: 32px; border-radius: var(--radius-xl); background: #fff; border: 1px solid var(--line); box-shadow: 0 14px 38px rgba(41,94,138,.07); }
.content-panel.reverse { grid-template-columns: .85fr 1fr; }
.content-panel__copy { display: flex; flex-direction: column; justify-content: center; }
.content-panel__copy p { margin: 12px 0; color: var(--muted); }
.content-panel__image { min-height: 270px; border-radius: 22px; overflow: hidden; background: var(--soft); }
.content-panel__image img { width: 100%; height: 100%; object-fit: contain; }
.service-points { margin: 14px 0 18px; padding: 0; list-style: none; display: grid; gap: 9px; }
.service-points li { position: relative; padding-left: 22px; color: var(--muted); }
.service-points li::before { content: ""; position: absolute; left: 2px; top: .72em; width: 8px; height: 8px; border-radius: 50%; background: var(--blue); }
.three-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.media-card { overflow: hidden; padding: 0; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); }
.media-card__image { height: 220px; background: var(--soft); }
.media-card__image img { width: 100%; height: 100%; object-fit: contain; }
.media-card__body { padding: 24px; }
.media-card__body p { margin: 10px 0 16px; color: var(--muted); }
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.review-card { padding: 24px; background: #fff; border: 1px solid var(--line); border-radius: 22px; }
.review-card p { color: var(--muted); }
.review-card footer { margin-top: 14px; color: var(--blue-dark); font-weight: 800; }
.faq-list { display: grid; gap: 12px; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: 18px; overflow: hidden; }
.faq-item summary { position: relative; min-height: 58px; display: flex; align-items: center; padding: 14px 54px 14px 20px; color: var(--blue-dark); font-weight: 800; cursor: pointer; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 20px; font-size: 26px; font-weight: 400; }
.faq-item[open] summary::after { content: "−"; }
.faq-item div { padding: 0 20px 20px; color: var(--muted); }
.prose-card { padding: 34px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-xl); }
.prose-card h2, .prose-card h3 { margin-top: 26px; }
.prose-card h2:first-child, .prose-card h3:first-child { margin-top: 0; }
.prose-card p { margin-top: 12px; color: var(--muted); }
.article-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.callout { padding: 28px; border-radius: 24px; background: linear-gradient(135deg, #137CD8, #2FA8F7); color: #fff; }
.callout h2, .callout h3 { color: #fff; }
.callout p { margin-top: 10px; color: rgba(255,255,255,.88); }
.site-footer { background: var(--footer); color: #EAF6FF; padding: 58px 0 22px; margin-top: 70px; }
.footer-grid { display: grid; grid-template-columns: 1.45fr repeat(3, 1fr); gap: 34px; }
.footer-grid h2 { color: #fff; font-size: 17px; margin-bottom: 13px; }
.footer-grid a { display: block; color: #CDE9FF; margin: 7px 0; }
.footer-grid p { color: #C8DDED; }
.footer-brand img { width: 150px; height: 50px; object-fit: contain; filter: brightness(0) invert(1); margin-bottom: 14px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 24px; margin-top: 38px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.14); color: #BBD4E8; font-size: 13px; }
.floating-service { position: fixed; z-index: 8000; right: 18px; top: 50%; transform: translateY(-50%); width: 108px; display: grid; gap: 8px; padding: 12px; background: rgba(255,255,255,.94); border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--shadow); }
.floating-service a:not(.main-btn), .floating-service button { min-height: 38px; border: 0; border-radius: 12px; background: var(--soft); color: var(--blue-dark); font-weight: 800; text-align: center; display: grid; place-items: center; cursor: pointer; }
.floating-service .main-btn { min-height: 40px; padding: 8px 10px; }
.mobile-drawer, .drawer-mask, .mobile-bottom-nav { display: none; }
@media (max-width: 1100px) {
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .floating-service { display: none; }
    .footer-grid { grid-template-columns: 1.25fr repeat(3, 1fr); gap: 24px; }
}
@media (max-width: 860px) {
    :root { --header-height: 66px; }
    .desktop-header, .channel-bar { display: none; }
    .site-header { height: var(--header-height); }
    .mobile-header { position: relative; z-index: 9000; height: 100%; display: grid; grid-template-columns: 64px 1fr 94px; align-items: center; padding: 0 12px; }
    .menu-button { width: 46px; height: 46px; display: grid; place-content: center; gap: 5px; border: 0; border-radius: 14px; background: var(--soft); cursor: pointer; }
    .menu-button span { width: 22px; height: 2px; border-radius: 999px; background: var(--blue-dark); }
    .mobile-logo { justify-self: center; }
    .mobile-logo img { width: 128px; height: 44px; object-fit: contain; }
    .mobile-register { position: relative; z-index: 9100; min-width: 82px; min-height: 44px; padding: 9px 16px; justify-self: end; }
    .site-main { padding-top: 92px; }
    .mobile-drawer { display: block; position: fixed; z-index: 10000; top: 0; left: 0; bottom: 0; width: min(86vw, 360px); background: #fff; transform: translateX(-103%); transition: transform .22s ease; box-shadow: 24px 0 60px rgba(18,48,78,.25); overflow-y: auto; overscroll-behavior: contain; }
    .mobile-drawer.is-open { transform: translateX(0); }
    .drawer-mask { display: block; position: fixed; z-index: 9990; inset: 0; background: rgba(16,43,70,.46); opacity: 0; visibility: hidden; pointer-events: none; transition: opacity .22s ease, visibility .22s ease; }
    .drawer-mask.is-visible { opacity: 1; visibility: visible; pointer-events: auto; }
    .drawer-head { position: sticky; top: 0; z-index: 2; display: flex; align-items: center; justify-content: space-between; min-height: 72px; padding: 10px 16px; background: #fff; border-bottom: 1px solid var(--line); }
    .drawer-head img { width: 130px; height: 46px; object-fit: contain; }
    .drawer-head button { width: 44px; height: 44px; border: 0; border-radius: 50%; background: var(--soft); color: var(--blue-dark); font-size: 28px; cursor: pointer; }
    .drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 16px 16px 34px; }
    .drawer-nav a { min-height: 46px; display: flex; align-items: center; padding: 10px 13px; border-radius: 13px; background: var(--soft); color: var(--muted); font-weight: 700; }
    .drawer-nav a.is-active { color: #fff; background: var(--blue); }
    body.drawer-open { overflow-y: hidden; }
    .mobile-bottom-nav { display: grid; position: fixed; z-index: 8500; left: 10px; right: 10px; bottom: max(8px, env(safe-area-inset-bottom)); grid-template-columns: repeat(4, 1fr); min-height: 64px; padding: 6px; border-radius: 20px; background: rgba(255,255,255,.96); border: 1px solid var(--line); box-shadow: 0 18px 46px rgba(25,69,109,.2); backdrop-filter: blur(12px); }
    .mobile-bottom-nav a { min-width: 44px; min-height: 50px; display: grid; place-items: center; align-content: center; gap: 2px; border-radius: 14px; color: var(--muted); font-size: 12px; font-weight: 800; }
    .mobile-bottom-nav span { color: var(--blue-dark); font-size: 15px; line-height: 1; }
    .section-shell { width: min(100% - 24px, 720px); }
    .page-hero { grid-template-columns: 1fr; padding: 34px 26px; min-height: auto; }
    .page-hero__visual { height: 280px; }
    .brand-intro, .content-panel, .content-panel.reverse { grid-template-columns: 1fr; }
    .brand-intro { padding: 28px; }
    .brand-intro__image { height: 280px; }
    .quick-grid, .three-grid, .review-grid { grid-template-columns: repeat(2, 1fr); }
    .split-panel, .article-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-bottom { padding-bottom: 76px; }
}
@media (max-width: 560px) {
    .container { width: calc(100% - 24px); }
    .site-main { padding-top: 82px; }
    .section-shell { width: calc(100% - 20px); margin-bottom: 18px; }
    .section-block { padding: 36px 0; }
    .section-heading { align-items: flex-start; flex-direction: column; }
    .page-hero { padding: 28px 20px; border-radius: 24px; }
    .page-hero__copy p { font-size: 15px; }
    .page-hero__visual { height: 230px; }
    .hero-links { align-items: stretch; flex-direction: column; }
    .hero-links .main-btn, .hero-links .text-link { width: 100%; justify-content: center; }
    .banner-slider { border-radius: 22px; padding: 8px; }
    .slider-viewport { aspect-ratio: 16 / 9; border-radius: 17px; }
    .slider-arrow { width: 44px; height: 44px; }
    .slider-arrow.prev { left: 14px; }
    .slider-arrow.next { right: 14px; }
    .slider-dots { bottom: 16px; }
    .brand-intro { padding: 22px; border-radius: 24px; }
    .brand-intro__image { height: 220px; }
    .quick-grid, .feature-grid, .three-grid, .review-grid { grid-template-columns: 1fr; }
    .quick-card, .info-card { min-height: auto; padding: 20px; }
    .notice-strip { grid-template-columns: 1fr; gap: 6px; padding: 20px; }
    .content-panel { padding: 22px; border-radius: 24px; }
    .content-panel__image { min-height: 220px; }
    .media-card__image { height: 210px; }
    .prose-card { padding: 24px 20px; border-radius: 24px; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; }
}