:root {
    --bg: #EAF2FB;
    --surface: #FFFFFF;
    --surface-soft: #F4F8FF;
    --surface-blue: #EDF5FF;
    --primary: #2FA8F7;
    --primary-light: #45C7FF;
    --primary-dark: #137CD8;
    --text: #24364F;
    --muted: #5D718A;
    --footer: #102B46;
    --line: rgba(47,168,247,.14);
    --shadow: 0 16px 40px rgba(19,124,216,.08);
    --shadow-strong: 0 18px 42px rgba(19,124,216,.14);
    --radius: 22px;
    --radius-sm: 15px;
    --header-height: 126px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif; line-height: 1.75; overflow-x: hidden; }
body.drawer-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; }
.container { width: min(1180px, calc(100% - 36px)); margin: 0 auto; }
.site-shell { min-height: 100vh; }
main { padding-top: var(--header-height); }
.site-header { position: fixed; inset: 0 0 auto; z-index: 100; background: rgba(255,255,255,.94); backdrop-filter: blur(12px); box-shadow: 0 8px 24px rgba(19,124,216,.08); }
.top-nav { min-height: 76px; display: grid; grid-template-columns: 190px 1fr auto; align-items: center; gap: 28px; }
.site-logo { display: inline-flex; align-items: center; width: 158px; }
.site-logo img { width: 100%; height: 50px; object-fit: contain; }
.nav-core { display: flex; justify-content: center; align-items: center; gap: clamp(18px, 2.5vw, 36px); }
.nav-core a { position: relative; color: var(--text); font-weight: 700; padding: 24px 0 20px; white-space: nowrap; }
.nav-core a:hover, .nav-core a.active { color: var(--primary); }
.nav-core a.active::after { content: ""; position: absolute; left: 50%; bottom: 10px; width: 28px; height: 3px; border-radius: 999px; background: var(--primary); transform: translateX(-50%); }
.main-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 24px; border-radius: 999px; color: #fff; font-weight: 800; background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 48%, var(--primary-dark) 100%); box-shadow: 0 12px 26px rgba(19,124,216,.18); transition: transform .2s ease, box-shadow .2s ease; }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 16px 30px rgba(19,124,216,.24); }
.header-register { min-width: 92px; }
.channel-bar { background: rgba(244,248,255,.94); border-top: 1px solid rgba(47,168,247,.10); border-bottom: 1px solid rgba(47,168,247,.10); overflow: hidden; }
.channel-scroll { display: flex; gap: 9px; padding-top: 10px; padding-bottom: 10px; overflow-x: auto; scrollbar-width: thin; }
.channel-scroll a { flex: 0 0 auto; color: var(--muted); border-radius: 999px; padding: 7px 13px; font-size: 14px; line-height: 1.2; }
.channel-scroll a:hover, .channel-scroll a.active { color: var(--primary-dark); background: rgba(47,168,247,.09); }
.menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 12px; background: #fff; padding: 10px; }
.menu-toggle span { display: block; height: 2px; margin: 4px 0; background: var(--primary-dark); border-radius: 999px; }
.section-pad { padding: 72px 0; }
.section-pad.compact { padding: 46px 0; }
.section-head { display: flex; justify-content: space-between; gap: 24px; align-items: end; margin-bottom: 28px; }
.section-head h2, .section-title { margin: 0; color: var(--primary-dark); font-size: clamp(27px, 3vw, 42px); line-height: 1.28; }
.section-head p { max-width: 660px; margin: 0; color: var(--muted); }
.section-kicker { display: inline-flex; margin-bottom: 12px; color: var(--primary); font-size: 14px; font-weight: 800; letter-spacing: .12em; }
.text-link { color: var(--primary-dark); font-weight: 800; }
.text-link:hover { color: var(--primary); }
.banner-wrap { background: var(--bg); padding: 36px 16px 44px; }
.banner-slider { max-width: 1200px; height: clamp(360px, 36vw, 470px); margin: 0 auto; border-radius: 24px; background: #fff; box-shadow: var(--shadow-strong); overflow: hidden; position: relative; z-index: 1; }
.banner-slider .slide { display: none; width: 100%; height: 100%; }
.banner-slider .slide.active { display: block; }
.banner-slider img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.slider-arrow { position: absolute; top: 50%; z-index: 3; width: 46px; height: 46px; border: 0; border-radius: 999px; color: var(--primary); background: rgba(255,255,255,.9); box-shadow: 0 8px 20px rgba(19,124,216,.14); transform: translateY(-50%); cursor: pointer; }
.slider-prev { left: 18px; }
.slider-next { right: 18px; }
.slider-dots { position: absolute; left: 50%; bottom: 14px; z-index: 3; display: flex; gap: 8px; transform: translateX(-50%); }
.slider-dots button { width: 10px; height: 10px; border: 0; padding: 0; border-radius: 50%; background: rgba(47,168,247,.28); cursor: pointer; }
.slider-dots button.active { background: var(--primary); transform: scale(1.16); }
.brand-intro { padding: 14px 0 70px; }
.brand-card, .page-hero .hero-grid { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.brand-card { display: grid; grid-template-columns: 1.12fr .88fr; gap: 38px; align-items: center; padding: clamp(28px, 4vw, 52px); }
.brand-card h1 { margin: 8px 0 18px; color: var(--primary-dark); font-size: clamp(34px, 4vw, 54px); line-height: 1.18; }
.brand-card p { margin: 0 0 16px; color: var(--muted); }
.brand-card img { width: 100%; max-height: 320px; object-fit: contain; }
.brand-actions, .hero-actions { display: flex; gap: 18px; align-items: center; margin-top: 24px; flex-wrap: wrap; }
.quick-categories { padding: 0 0 66px; }
.pill-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.pill-card { min-height: 142px; padding: 22px; border-radius: 18px; background: #fff; border: 1px solid var(--line); box-shadow: 0 10px 28px rgba(19,124,216,.06); }
.pill-card h3 { margin: 0 0 9px; color: var(--primary-dark); }
.pill-card p { margin: 0 0 12px; color: var(--muted); font-size: 15px; }
.platform-strip { padding: 28px 0; }
.platform-strip .container { padding: 30px 34px; border-radius: 22px; background: linear-gradient(135deg, #fff, #EDF5FF); border: 1px solid var(--line); box-shadow: var(--shadow); }
.platform-strip h2 { margin: 0 0 10px; color: var(--primary-dark); }
.platform-strip p { margin: 0; color: var(--muted); }
.info-board { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.info-card, .content-card, .review-card, .faq-item, .notice-card { background: #fff; border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); }
.info-card { padding: 24px; }
.info-card .num { color: var(--primary); font-size: 13px; font-weight: 900; }
.info-card h3 { margin: 8px 0; color: var(--primary-dark); }
.info-card p { margin: 0; color: var(--muted); font-size: 15px; }
.content-grid { display: grid; gap: 22px; }
.content-grid.two { grid-template-columns: repeat(2, 1fr); }
.content-grid.three { grid-template-columns: repeat(3, 1fr); }
.content-card { overflow: hidden; }
.content-card .image-wrap { height: 220px; padding: 16px; background: var(--surface-soft); }
.content-card .image-wrap img { width: 100%; height: 100%; object-fit: contain; }
.content-card .card-body { padding: 24px; }
.content-card h3 { margin: 0 0 10px; color: var(--primary-dark); font-size: 24px; }
.content-card p { margin: 0 0 14px; color: var(--muted); }
.content-card ul, .rich-copy ul { margin: 14px 0 18px; padding-left: 20px; }
.content-card li, .rich-copy li { margin-bottom: 7px; }
.soft-section { background: rgba(255,255,255,.38); }
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.review-card { padding: 24px; }
.review-card p { margin: 0 0 14px; color: var(--muted); }
.review-card strong { color: var(--primary-dark); }
.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 0 22px; }
.faq-item summary { list-style: none; cursor: pointer; padding: 20px 34px 20px 0; color: var(--primary-dark); font-weight: 800; position: relative; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; position: absolute; right: 0; top: 16px; font-size: 24px; color: var(--primary); }
.faq-item[open] summary::after { content: '−'; }
.faq-item p { margin: 0; padding: 0 0 20px; color: var(--muted); }
.page-hero { padding-top: 54px; }
.page-hero .hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: 42px; padding: clamp(30px, 5vw, 62px); }
.hero-copy h1 { margin: 0 0 18px; color: var(--primary-dark); font-size: clamp(36px, 4.5vw, 58px); line-height: 1.18; }
.hero-copy p { margin: 0; color: var(--muted); font-size: 18px; }
.hero-visual { min-height: 300px; display: flex; align-items: center; justify-content: center; border-radius: 20px; background: var(--surface-soft); padding: 20px; }
.hero-visual img { width: 100%; max-height: 330px; object-fit: contain; }
.article-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 26px; align-items: start; }
.rich-copy, .side-panel { background: #fff; border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--shadow); }
.rich-copy { padding: clamp(28px, 4vw, 48px); }
.rich-copy h2 { margin: 36px 0 12px; color: var(--primary-dark); font-size: 30px; }
.rich-copy h2:first-child { margin-top: 0; }
.rich-copy h3 { margin: 24px 0 10px; color: var(--primary-dark); }
.rich-copy p { color: var(--muted); }
.side-panel { position: sticky; top: 150px; padding: 24px; }
.side-panel h2 { margin: 0 0 16px; color: var(--primary-dark); font-size: 22px; }
.side-panel a { display: block; padding: 10px 0; color: var(--muted); border-bottom: 1px solid var(--line); }
.side-panel a:last-child { border-bottom: 0; }
.side-panel a:hover { color: var(--primary); }
.notice-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.notice-card { padding: 24px; }
.notice-card h3 { color: var(--primary-dark); margin: 0 0 10px; }
.notice-card p { color: var(--muted); margin: 0; }
.compliance-strip { padding: 34px 0; background: #E1ECF8; border-top: 1px solid rgba(47,168,247,.12); }
.compliance-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.compliance-grid div { padding: 18px; border-radius: 14px; background: rgba(255,255,255,.72); }
.compliance-grid strong { display: block; color: var(--primary-dark); margin-bottom: 4px; }
.compliance-grid span { color: var(--muted); font-size: 14px; }
.site-footer { background: var(--footer); color: #EAF6FF; padding: 58px 0 20px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 34px; }
.footer-brand img { width: 158px; height: 52px; object-fit: contain; object-position: left center; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 420px; color: rgba(234,246,255,.72); }
.site-footer h2 { margin: 0 0 14px; font-size: 18px; color: #fff; }
.site-footer a { display: block; margin: 8px 0; color: rgba(234,246,255,.74); }
.site-footer a:hover { color: #fff; }
.footer-bottom { margin-top: 34px; padding-top: 20px; border-top: 1px solid rgba(234,246,255,.14); color: rgba(234,246,255,.64); font-size: 14px; }
.floating-service { position: fixed; right: 18px; top: 42%; z-index: 60; display: grid; gap: 8px; width: 104px; }
.floating-service a, .floating-service button { min-height: 42px; display: flex; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: 12px; background: #fff; color: var(--primary-dark); box-shadow: 0 14px 30px rgba(19,124,216,.10); cursor: pointer; font-size: 14px; }
.floating-service .register-link { color: #fff; background: linear-gradient(135deg, var(--primary-light), var(--primary), var(--primary-dark)); }
.mobile-drawer { position: fixed; inset: 0 auto 0 0; z-index: 130; width: min(84vw, 320px); background: #fff; transform: translateX(-102%); transition: transform .22s ease; box-shadow: 20px 0 50px rgba(16,43,70,.18); 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: 16px; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); }
.drawer-head img { width: 132px; height: 42px; object-fit: contain; }
.drawer-close { width: 40px; height: 40px; border: 0; border-radius: 12px; background: var(--surface-soft); color: var(--primary-dark); font-size: 28px; line-height: 1; }
.drawer-nav { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; padding: 16px; }
.drawer-nav a { padding: 12px 10px; border-radius: 12px; color: var(--muted); background: var(--surface-soft); }
.drawer-nav a.active { color: var(--primary-dark); background: var(--surface-blue); font-weight: 800; }
.drawer-overlay { position: fixed; inset: 0; z-index: 120; background: rgba(16,43,70,.46); opacity: 0; transition: opacity .22s ease; }
.drawer-overlay.show { opacity: 1; }
.mobile-bottom-nav { display: none; }
.empty-visual { min-height: 240px; display: grid; place-items: center; border-radius: 18px; background: linear-gradient(135deg, #fff, var(--surface-blue)); color: var(--primary-dark); font-weight: 800; }
@media (max-width: 1200px) {
    .floating-service { display: none; }
    .info-board { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
    :root { --header-height: 76px; }
    main { padding-top: var(--header-height); }
    .top-nav { min-height: 76px; grid-template-columns: 48px 1fr auto; gap: 12px; }
    .menu-toggle { display: block; }
    .site-logo { width: 138px; justify-self: center; }
    .nav-core, .channel-bar { display: none; }
    .brand-card, .page-hero .hero-grid { grid-template-columns: 1fr; }
    .brand-card .visual, .hero-visual { order: -1; }
    .pill-grid, .content-grid.three, .review-grid, .notice-grid { grid-template-columns: repeat(2, 1fr); }
    .article-wrap { grid-template-columns: 1fr; }
    .side-panel { position: static; }
    .compliance-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    body { padding-bottom: 76px; }
    .container { width: min(100% - 24px, 1180px); }
    .header-register { min-width: 74px; min-height: 40px; padding: 0 16px; }
    .site-logo { width: 124px; }
    .banner-wrap { padding: 18px 12px 30px; }
    .banner-slider { height: clamp(175px, 55vw, 235px); border-radius: 17px; }
    .slider-arrow { width: 38px; height: 38px; }
    .slider-prev { left: 9px; }
    .slider-next { right: 9px; }
    .section-pad { padding: 52px 0; }
    .brand-intro { padding: 6px 0 48px; }
    .brand-card, .page-hero .hero-grid { padding: 24px; border-radius: 18px; }
    .brand-card h1 { font-size: 36px; }
    .pill-grid, .content-grid.two, .content-grid.three, .review-grid, .notice-grid, .info-board, .compliance-grid, .footer-grid { grid-template-columns: 1fr; }
    .content-card .image-wrap { height: 180px; }
    .section-head { display: block; }
    .section-head p { margin-top: 10px; }
    .hero-visual { min-height: 220px; }
    .mobile-bottom-nav { position: fixed; inset: auto 10px 10px; z-index: 90; display: grid; grid-template-columns: repeat(4, 1fr); padding: 8px; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.95); backdrop-filter: blur(12px); box-shadow: 0 14px 34px rgba(16,43,70,.18); }
    .mobile-bottom-nav a { display: grid; justify-items: center; gap: 3px; color: var(--muted); font-size: 12px; }
    .mobile-bottom-nav span { width: 28px; height: 28px; display: grid; place-items: center; border-radius: 999px; background: var(--surface-soft); color: var(--primary-dark); font-weight: 900; }
    .mobile-bottom-nav a.active { color: var(--primary-dark); font-weight: 800; }
    .mobile-bottom-nav a.active span { color: #fff; background: var(--primary); }
}