:root {
    --page: #EAF2FB;
    --surface: #FFFFFF;
    --soft: #F4F8FF;
    --soft-2: #EDF5FF;
    --soft-3: #E1ECF8;
    --blue: #2FA8F7;
    --cyan: #45C7FF;
    --deep: #137CD8;
    --text: #24364F;
    --muted: #5D718A;
    --line: rgba(47,168,247,.14);
    --footer: #102B46;
    --footer-text: #EAF6FF;
    --shadow: 0 18px 44px rgba(20,76,120,.10);
    --radius: 26px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body { margin: 0; min-width: 320px; overflow-x: hidden; background: var(--page); color: var(--text); font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif; line-height: 1.75; }
body.drawer-open { overflow-y: hidden; }
a, button { touch-action: manipulation; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
img { display: block; max-width: 100%; height: auto; }
.skip-link { position: fixed; left: 10px; top: -100px; z-index: 20000; padding: 10px 16px; background: #fff; color: var(--deep); border-radius: 10px; }
.skip-link:focus { top: 10px; }
.main-btn { display: inline-flex; align-items: center; justify-content: center; min-width: 92px; min-height: 44px; padding: 10px 24px; color: #fff; border-radius: 999px; background: linear-gradient(135deg, #45C7FF 0%, #2FA8F7 48%, #137CD8 100%); box-shadow: 0 12px 26px rgba(19,124,216,.18); font-weight: 700; border: 0; cursor: pointer; }
.main-btn:hover { transform: translateY(-1px); box-shadow: 0 16px 30px rgba(19,124,216,.24); }
.text-link { color: var(--deep); font-weight: 700; }
.text-link:hover { color: var(--cyan); }
.desktop-header { position: fixed; top: 0; left: 0; right: 0; z-index: 7000; height: 76px; background: rgba(255,255,255,.93); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.header-inner { width: min(1200px, calc(100% - 40px)); height: 100%; margin: 0 auto; display: grid; grid-template-columns: 190px 1fr 118px; align-items: center; gap: 20px; }
.brand-logo img { max-width: 150px; max-height: 48px; object-fit: contain; }
.core-nav { display: flex; justify-content: center; align-items: stretch; height: 100%; gap: 8px; white-space: nowrap; }
.core-nav a { position: relative; display: inline-flex; align-items: center; min-height: 44px; padding: 0 18px; color: var(--muted); font-weight: 700; border-radius: 14px; }
.core-nav a:hover { color: var(--deep); background: var(--soft); }
.core-nav a.is-active { color: var(--deep); }
.core-nav a.is-active::after { content: ""; position: absolute; left: 50%; bottom: 10px; width: 24px; height: 3px; transform: translateX(-50%); border-radius: 99px; background: var(--blue); }
.header-register { justify-self: end; }
.mobile-header { display: none; }
.channel-bar { position: fixed; top: 76px; left: 0; right: 0; z-index: 6500; height: 50px; background: rgba(244,248,255,.96); border-bottom: 1px solid var(--line); }
.channel-scroll { width: min(1240px, calc(100% - 30px)); height: 100%; margin: 0 auto; display: flex; align-items: center; gap: 8px; overflow-x: auto; overflow-y: hidden; 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: linear-gradient(135deg, var(--cyan), var(--deep)); }
main { min-height: 60vh; padding-top: 126px; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.section { padding: 42px 0; }
.section-title { margin: 0 0 12px; color: var(--deep); font-size: clamp(26px, 4vw, 40px); line-height: 1.25; }
.section-lead { max-width: 820px; margin: 0 0 28px; color: var(--muted); font-size: 17px; }
.section-kicker { display: inline-block; margin-bottom: 10px; padding: 6px 12px; border-radius: 999px; background: var(--soft-2); color: var(--deep); font-weight: 700; font-size: 14px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.grid-2, .grid-3, .grid-4 { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.info-card { padding: 26px; }
.info-card h2, .info-card h3 { margin: 0 0 10px; color: var(--deep); line-height: 1.35; }
.info-card p { margin: 0 0 14px; color: var(--muted); }
.info-card ul { margin: 14px 0 18px; padding-left: 20px; }
.info-card li { margin: 6px 0; }
.media-card { overflow: hidden; }
.media-card img { width: 100%; aspect-ratio: 16/9; object-fit: contain; background: var(--soft); }
.media-card .media-body { padding: 24px; }
.banner-wrap { padding: 28px 0 36px; background: linear-gradient(180deg, #E7F1FC 0%, var(--page) 100%); }
.banner-slider { position: relative; z-index: 1; width: min(1180px, calc(100% - 40px)); margin: 0 auto; overflow: hidden; background: #fff; border-radius: 34px; box-shadow: 0 20px 54px rgba(20,76,120,.14); }
.banner-stage { position: relative; min-height: 300px; aspect-ratio: 16/6.5; background: var(--soft-3); }
.banner-slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .45s ease; }
.banner-slide.is-active { opacity: 1; visibility: visible; }
.banner-slide img { width: 100%; height: 100%; object-fit: contain; }
.slider-arrow { position: absolute; top: 50%; z-index: 3; width: 48px; height: 48px; transform: translateY(-50%); border: 0; border-radius: 50%; background: rgba(255,255,255,.9); color: var(--deep); font-size: 28px; cursor: pointer; box-shadow: 0 8px 24px rgba(16,43,70,.16); }
.slider-prev { left: 18px; }
.slider-next { right: 18px; }
.slider-dots { position: absolute; left: 50%; bottom: 16px; z-index: 3; display: flex; gap: 9px; transform: translateX(-50%); }
.slider-dot { width: 12px; height: 12px; min-width: 12px; padding: 0; border: 2px solid #fff; border-radius: 50%; background: rgba(19,124,216,.38); cursor: pointer; }
.slider-dot.is-active { width: 28px; border-radius: 99px; background: var(--deep); }
.intro-card { display: grid; grid-template-columns: 1.1fr .9fr; overflow: hidden; }
.intro-copy { padding: clamp(28px, 5vw, 52px); }
.intro-copy h1 { margin: 0 0 18px; color: var(--deep); font-size: clamp(30px, 5vw, 48px); line-height: 1.2; }
.intro-copy p { margin: 0 0 18px; color: var(--muted); }
.intro-image { min-height: 340px; background: var(--soft); }
.intro-image img { width: 100%; height: 100%; object-fit: contain; }
.quick-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.quick-item { padding: 22px; background: #fff; border: 1px solid var(--line); border-radius: 20px; }
.quick-item h3 { margin: 0 0 8px; color: var(--deep); }
.quick-item p { min-height: 58px; margin: 0 0 10px; color: var(--muted); }
.notice-strip { padding: 22px 28px; background: linear-gradient(135deg, #137CD8, #2FA8F7 58%, #45C7FF); color: #fff; border-radius: 24px; box-shadow: 0 16px 36px rgba(19,124,216,.20); }
.notice-strip p { margin: 0; }
.stat-board .info-card { border-top: 4px solid var(--blue); }
.content-pair { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 22px; }
.content-pair .media-card { min-height: 100%; }
.content-pair .media-card img { aspect-ratio: 16/8.6; }
.mini-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.review-card { padding: 24px; }
.review-card p { margin: 0 0 14px; color: var(--muted); }
.review-card strong { color: var(--deep); }
.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 22px 24px; background: #fff; border: 1px solid var(--line); border-radius: 18px; }
.faq-item h3 { margin: 0 0 8px; color: var(--deep); font-size: 18px; }
.faq-item p { margin: 0; color: var(--muted); }
.page-hero { padding: 48px 0 28px; }
.page-hero-card { display: grid; grid-template-columns: 1.05fr .95fr; overflow: hidden; }
.page-hero-copy { padding: clamp(30px, 6vw, 60px); align-self: center; }
.page-hero-copy h1 { margin: 0 0 14px; color: var(--deep); font-size: clamp(32px, 5vw, 50px); line-height: 1.18; }
.page-hero-copy p { margin: 0 0 20px; color: var(--muted); font-size: 17px; }
.page-hero-image { min-height: 380px; background: linear-gradient(135deg, var(--soft), var(--soft-3)); }
.page-hero-image img { width: 100%; height: 100%; object-fit: contain; }
.prose { padding: 34px; }
.prose h2 { margin: 28px 0 10px; color: var(--deep); }
.prose h2:first-child { margin-top: 0; }
.prose p { margin: 0 0 16px; color: var(--muted); }
.prose ul { margin: 0 0 18px; padding-left: 22px; }
.steps { counter-reset: step; display: grid; gap: 14px; }
.step { position: relative; padding: 22px 22px 22px 70px; background: #fff; border: 1px solid var(--line); border-radius: 18px; }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 22px; top: 20px; width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; color: #fff; background: linear-gradient(135deg, var(--cyan), var(--deep)); font-weight: 800; }
.step h3 { margin: 0 0 6px; color: var(--deep); }
.step p { margin: 0; color: var(--muted); }
.tag-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.tag { padding: 8px 13px; border-radius: 999px; background: var(--soft-2); color: var(--deep); font-weight: 700; font-size: 14px; }
.contact-box { padding: 30px; text-align: center; }
.contact-box p { color: var(--muted); }
.site-footer { margin-top: 46px; padding: 52px 0 96px; background: var(--footer); color: var(--footer-text); }
.footer-grid { width: min(1180px, calc(100% - 40px)); margin: 0 auto; display: grid; grid-template-columns: 1.7fr repeat(3, 1fr); gap: 34px; }
.footer-brand img { max-width: 150px; max-height: 50px; margin-bottom: 16px; object-fit: contain; filter: brightness(0) invert(1); }
.footer-brand p { margin: 0; color: rgba(234,246,255,.72); }
.site-footer h2 { margin: 0 0 14px; font-size: 17px; }
.site-footer a { display: block; margin: 8px 0; color: rgba(234,246,255,.78); }
.site-footer a:hover { color: #fff; }
.footer-note { width: min(1180px, calc(100% - 40px)); margin: 34px auto 0; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.12); color: rgba(234,246,255,.64); font-size: 14px; }
.footer-note p { margin: 5px 0; }
.floating-service { position: fixed; right: 22px; top: 50%; z-index: 8000; width: 116px; padding: 12px; transform: translateY(-50%); background: rgba(255,255,255,.96); border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--shadow); }
.floating-service a, .floating-service button { display: flex; align-items: center; justify-content: center; width: 100%; min-height: 40px; margin: 5px 0; border: 0; border-radius: 12px; color: var(--deep); background: transparent; cursor: pointer; font-size: 14px; }
.floating-service .main-btn { color: #fff; min-width: 0; }
.floating-service a:not(.main-btn):hover, .floating-service button:hover { background: var(--soft); }
.drawer-mask, .mobile-drawer, .mobile-bottom-nav { display: none; }
@media (max-width: 1280px) {
    .floating-service { right: 10px; width: 104px; }
    .container, .banner-slider { width: min(1100px, calc(100% - 160px)); }
}
@media (max-width: 1024px) {
    .header-inner { grid-template-columns: 160px 1fr 100px; width: calc(100% - 24px); gap: 8px; }
    .core-nav a { padding: 0 12px; font-size: 15px; }
    .floating-service { display: none; }
    .container, .banner-slider { width: min(940px, calc(100% - 32px)); }
    .grid-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .footer-grid { grid-template-columns: 1.5fr repeat(3, 1fr); }
}
@media (max-width: 820px) {
    .desktop-header, .channel-bar { display: none; }
    .mobile-header { position: fixed; top: 0; left: 0; right: 0; z-index: 9000; height: 66px; display: grid; grid-template-columns: 54px 1fr 92px; align-items: center; gap: 10px; padding: 8px 12px; background: rgba(255,255,255,.96); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
    .menu-toggle { width: 46px; height: 46px; padding: 11px; border: 0; border-radius: 14px; background: var(--soft); cursor: pointer; }
    .menu-toggle span { display: block; height: 2px; margin: 5px 0; border-radius: 9px; background: var(--deep); }
    .mobile-logo { justify-self: center; }
    .mobile-logo img { max-width: 128px; max-height: 44px; object-fit: contain; }
    .mobile-register { position: relative; z-index: 9100; justify-self: end; min-width: 78px; padding: 9px 16px; }
    .drawer-mask { position: fixed; inset: 0; z-index: 9990; display: block; visibility: hidden; opacity: 0; pointer-events: none; background: rgba(16,43,70,.48); transition: opacity .25s ease, visibility .25s ease; }
    .drawer-mask.is-open { visibility: visible; opacity: 1; pointer-events: auto; }
    .mobile-drawer { position: fixed; top: 0; left: 0; bottom: 0; z-index: 10000; display: block; width: min(86vw, 350px); overflow-y: auto; transform: translateX(-102%); background: #fff; box-shadow: 16px 0 40px rgba(16,43,70,.24); transition: transform .28s ease; }
    .mobile-drawer.is-open { transform: translateX(0); }
    .drawer-head { position: sticky; top: 0; z-index: 2; height: 70px; display: flex; align-items: center; justify-content: space-between; padding: 10px 16px; background: #fff; border-bottom: 1px solid var(--line); }
    .drawer-logo img { max-width: 132px; max-height: 46px; object-fit: contain; }
    .drawer-close { width: 44px; height: 44px; border: 0; border-radius: 50%; background: var(--soft); color: var(--deep); font-size: 28px; cursor: pointer; }
    .drawer-nav { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 9px; padding: 16px 16px 30px; }
    .drawer-nav a { display: flex; align-items: center; min-height: 46px; padding: 10px 13px; border-radius: 13px; background: var(--soft); color: var(--muted); font-weight: 700; }
    .drawer-nav a:hover, .drawer-nav a.is-active { color: #fff; background: linear-gradient(135deg, var(--cyan), var(--deep)); }
    main { padding-top: 66px; }
    .container, .banner-slider { width: calc(100% - 24px); }
    .banner-wrap { padding-top: 18px; }
    .banner-slider { border-radius: 22px; }
    .banner-stage { min-height: 190px; aspect-ratio: 16/8; }
    .slider-arrow { width: 44px; height: 44px; font-size: 24px; }
    .intro-card, .page-hero-card { grid-template-columns: 1fr; }
    .intro-image, .page-hero-image { min-height: 260px; }
    .grid-3, .quick-grid, .review-grid, .mini-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .content-pair, .grid-2 { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .mobile-bottom-nav { position: fixed; left: 10px; right: 10px; bottom: calc(8px + env(safe-area-inset-bottom)); z-index: 8500; display: grid; grid-template-columns: repeat(4, 1fr); min-height: 64px; padding: 7px; background: rgba(255,255,255,.97); border: 1px solid var(--line); border-radius: 20px; box-shadow: 0 15px 40px rgba(16,43,70,.18); }
    .mobile-bottom-nav a { display: flex; flex-direction: column; align-items: center; justify-content: center; min-width: 44px; min-height: 48px; color: var(--muted); font-size: 12px; border-radius: 14px; }
    .mobile-bottom-nav span { display: block; min-height: 20px; color: var(--deep); font-size: 14px; font-weight: 800; line-height: 1.3; }
    .mobile-bottom-nav a.is-active { color: #fff; background: linear-gradient(135deg, var(--cyan), var(--deep)); }
    .mobile-bottom-nav a.is-active span { color: #fff; }
    .site-footer { padding-bottom: 118px; }
}
@media (max-width: 600px) {
    .section { padding: 30px 0; }
    .grid-3, .grid-4, .quick-grid, .review-grid, .mini-grid { grid-template-columns: 1fr; }
    .info-card, .prose { padding: 22px; }
    .intro-copy, .page-hero-copy { padding: 28px 22px; }
    .page-hero { padding-top: 28px; }
    .banner-stage { min-height: 170px; }
    .slider-arrow { width: 40px; height: 40px; }
    .slider-prev { left: 8px; }
    .slider-next { right: 8px; }
    .footer-grid { grid-template-columns: 1fr; gap: 20px; }
    .drawer-nav { grid-template-columns: 1fr 1fr; }
    .notice-strip { padding: 20px; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}