:root {
    --page: #EAF2FB;
    --card: #FFFFFF;
    --soft: #F4F8FF;
    --soft-2: #EDF5FF;
    --soft-3: #E1ECF8;
    --blue: #2FA8F7;
    --blue-light: #45C7FF;
    --blue-deep: #137CD8;
    --title: #137CD8;
    --text: #24364F;
    --muted: #5D718A;
    --line: rgba(47,168,247,.14);
    --footer: #102B46;
    --footer-text: #EAF6FF;
    --shadow: 0 18px 45px rgba(24, 82, 130, .11);
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; overflow-x: hidden; }
html { scroll-behavior: smooth; }
body {
    background: var(--page);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    line-height: 1.78;
    padding-top: 126px;
    -webkit-text-size-adjust: 100%;
}
body.drawer-open { overflow-y: hidden; }
a { color: inherit; text-decoration: none; touch-action: manipulation; }
button { font: inherit; touch-action: manipulation; }
img { display: block; max-width: 100%; height: auto; }
.skip-link { position: fixed; left: 12px; top: -80px; z-index: 11000; background: #fff; color: var(--blue-deep); padding: 10px 14px; border-radius: 10px; }
.skip-link:focus { top: 12px; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.desktop-header {
    position: fixed; inset: 0 0 auto 0; height: 76px; z-index: 9000;
    background: rgba(255,255,255,.92); backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
}
.header-inner { width: min(1180px, calc(100% - 40px)); height: 100%; margin: 0 auto; display: grid; grid-template-columns: 200px 1fr auto; align-items: center; gap: 28px; }
.brand-logo img { width: 154px; max-height: 48px; object-fit: contain; }
.core-nav { display: flex; align-items: center; justify-content: center; gap: 7px; min-width: 0; white-space: nowrap; }
.core-nav a { position: relative; padding: 12px 15px; border-radius: 12px; color: var(--muted); font-weight: 700; }
.core-nav a:hover, .core-nav a.active { color: var(--blue-deep); background: var(--soft); }
.core-nav a.active::after { content: ""; position: absolute; left: 30%; right: 30%; bottom: 4px; height: 3px; border-radius: 3px; background: var(--blue); }
.main-btn, .primary-link {
    display: inline-flex; align-items: center; justify-content: center; min-width: 96px; min-height: 44px; padding: 10px 24px;
    background: linear-gradient(135deg, #45C7FF 0%, #2FA8F7 48%, #137CD8 100%);
    color: #fff; border-radius: 999px; box-shadow: 0 12px 26px rgba(19,124,216,.18); font-weight: 800;
}
.main-btn:hover, .primary-link:hover { transform: translateY(-1px); box-shadow: 0 16px 30px rgba(19,124,216,.24); }
.header-register { position: relative; z-index: 9100; }
.channel-bar {
    position: fixed; left: 0; right: 0; top: 76px; z-index: 8800; height: 50px;
    background: rgba(244,248,255,.94); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px);
}
.channel-scroll { width: min(1180px, calc(100% - 40px)); height: 100%; margin: 0 auto; display: flex; align-items: center; gap: 8px; overflow-x: auto; scrollbar-width: none; }
.channel-scroll::-webkit-scrollbar { display: none; }
.channel-scroll a { flex: 0 0 auto; padding: 6px 12px; border-radius: 999px; color: var(--muted); font-size: 13px; white-space: nowrap; }
.channel-scroll a:hover, .channel-scroll a.active { background: #fff; color: var(--blue-deep); box-shadow: 0 6px 18px rgba(25,102,160,.08); }
.mobile-header, .mobile-drawer, .drawer-mask, .mobile-bottom-nav { display: none; }
.section { padding: 34px 0; }
.section.compact { padding: 22px 0; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 22px; }
.section-head h1, .section-head h2 { margin: 0; color: var(--title); line-height: 1.3; }
.section-head h2 { font-size: clamp(25px, 3vw, 36px); }
.section-head p { margin: 8px 0 0; color: var(--muted); max-width: 760px; }
.text-link { color: var(--blue-deep); font-weight: 800; display: inline-flex; align-items: center; gap: 6px; }
.text-link::after { content: "→"; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-md); box-shadow: var(--shadow); }
.banner-wrap { padding: 22px 0 28px; background: var(--page); }
.banner-slider { position: relative; z-index: 1; overflow: hidden; border-radius: 32px; background: #fff; box-shadow: var(--shadow); }
.slides { position: relative; aspect-ratio: 16 / 6.2; min-height: 300px; }
.slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .45s ease; }
.slide.active { opacity: 1; visibility: visible; }
.slide img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.slider-arrow { position: absolute; top: 50%; transform: translateY(-50%); z-index: 3; width: 46px; height: 46px; border: 0; border-radius: 50%; background: rgba(255,255,255,.92); color: var(--blue-deep); box-shadow: 0 8px 22px rgba(17,67,109,.16); cursor: pointer; }
.slider-arrow.prev { left: 18px; }
.slider-arrow.next { right: 18px; }
.slider-dots { position: absolute; left: 0; right: 0; bottom: 14px; z-index: 3; display: flex; justify-content: center; gap: 8px; }
.slider-dot { width: 11px; height: 11px; border: 0; padding: 0; border-radius: 50%; background: rgba(255,255,255,.65); box-shadow: 0 0 0 1px rgba(19,124,216,.16); cursor: pointer; }
.slider-dot.active { width: 28px; border-radius: 10px; background: var(--blue); }
.brand-intro { display: grid; grid-template-columns: 1.15fr .85fr; align-items: center; gap: 28px; padding: 32px; }
.brand-intro h1 { margin: 0 0 14px; font-size: clamp(30px, 4vw, 48px); color: var(--title); line-height: 1.25; }
.brand-intro p { margin: 0 0 18px; color: var(--muted); }
.brand-intro img { width: 100%; max-height: 380px; object-fit: contain; border-radius: 22px; background: var(--soft); }
.quick-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.quick-card { padding: 22px; min-height: 176px; display: flex; flex-direction: column; }
.quick-card h3 { margin: 0 0 8px; color: var(--title); }
.quick-card p { margin: 0 0 14px; color: var(--muted); flex: 1; }
.notice-strip { background: linear-gradient(135deg, #137CD8, #2FA8F7 62%, #45C7FF); color: #fff; border-radius: 24px; padding: 24px 28px; box-shadow: 0 18px 36px rgba(19,124,216,.19); }
.notice-strip p { margin: 0; }
.info-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.info-tile { padding: 22px; background: #fff; border: 1px solid var(--line); border-radius: 18px; }
.info-tile h3 { margin: 0 0 8px; color: var(--title); }
.info-tile p { margin: 0; color: var(--muted); }
.feature-pair, .feature-triple { display: grid; gap: 18px; }
.feature-pair { grid-template-columns: repeat(2, 1fr); }
.feature-triple { grid-template-columns: repeat(3, 1fr); }
.feature-card { overflow: hidden; display: flex; flex-direction: column; }
.feature-card img { width: 100%; aspect-ratio: 16 / 9; object-fit: contain; background: var(--soft); border-bottom: 1px solid var(--line); }
.feature-body { padding: 24px; flex: 1; }
.feature-body h3 { margin: 0 0 10px; color: var(--title); font-size: 22px; }
.feature-body p { margin: 0 0 12px; color: var(--muted); }
.feature-body ul { margin: 0 0 14px; padding-left: 20px; color: var(--text); }
.split-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.panel-box { padding: 26px; }
.panel-box h3 { margin-top: 0; color: var(--title); }
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.review-card { padding: 22px; }
.review-card strong { display: block; color: var(--blue-deep); margin-bottom: 8px; }
.review-card p { margin: 0; color: var(--muted); }
.faq-list { display: grid; gap: 12px; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 20px 22px; }
.faq-item h3 { margin: 0 0 8px; color: var(--title); font-size: 18px; }
.faq-item p { margin: 0; color: var(--muted); }
.about-panel { padding: 30px; display: grid; grid-template-columns: 1.1fr .9fr; gap: 24px; align-items: center; }
.about-panel h2 { margin: 0 0 12px; color: var(--title); }
.about-panel p { margin: 0; color: var(--muted); }
.legal-panel { padding: 26px; background: var(--soft-3); border: 1px solid var(--line); border-radius: 22px; }
.legal-panel h2 { margin-top: 0; color: var(--title); }
.legal-panel p { margin-bottom: 0; color: var(--muted); }
.subhero { padding: 34px 0 22px; }
.subhero-card { display: grid; grid-template-columns: 1.1fr .9fr; gap: 28px; align-items: center; padding: 34px; }
.subhero-card h1 { margin: 0 0 12px; color: var(--title); font-size: clamp(32px, 4vw, 46px); line-height: 1.25; }
.subhero-card p { margin: 0 0 18px; color: var(--muted); }
.subhero-card img { width: 100%; max-height: 360px; object-fit: contain; background: var(--soft); border-radius: 22px; }
.content-grid { display: grid; grid-template-columns: 1.4fr .6fr; gap: 20px; align-items: start; }
.article-card { padding: 30px; }
.article-card h2 { color: var(--title); margin: 0 0 12px; }
.article-card h3 { color: var(--blue-deep); margin-top: 26px; }
.article-card p { margin: 0 0 14px; color: var(--muted); }
.article-card ul { padding-left: 22px; }
.side-card { padding: 24px; position: sticky; top: 146px; }
.side-card h2 { color: var(--title); margin-top: 0; font-size: 22px; }
.side-card a { display: block; padding: 10px 0; border-bottom: 1px solid var(--line); color: var(--muted); }
.side-card a:hover { color: var(--blue-deep); }
.topic-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.topic-card { padding: 22px; }
.topic-card h3 { margin: 0 0 8px; color: var(--title); }
.topic-card p { margin: 0; color: var(--muted); }
.steps { counter-reset: step; display: grid; gap: 14px; }
.step { position: relative; padding: 20px 20px 20px 66px; background: #fff; border: 1px solid var(--line); border-radius: 16px; }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 20px; top: 20px; width: 32px; height: 32px; display: grid; place-items: center; border-radius: 50%; background: var(--blue); color: #fff; font-weight: 800; }
.step h3 { margin: 0 0 6px; color: var(--title); }
.step p { margin: 0; color: var(--muted); }
.contact-box { padding: 24px; background: var(--soft); border: 1px solid var(--line); border-radius: 18px; }
.contact-box h3 { margin-top: 0; color: var(--title); }
.site-footer { margin-top: 42px; background: var(--footer); color: var(--footer-text); }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 34px; padding: 48px 0 32px; }
.footer-brand img { width: 150px; max-height: 50px; object-fit: contain; margin-bottom: 16px; filter: brightness(0) invert(1); }
.footer-brand p, .footer-note p { color: rgba(234,246,255,.78); }
.footer-grid h2 { font-size: 17px; margin: 0 0 14px; }
.footer-grid a { display: block; color: rgba(234,246,255,.82); margin: 8px 0; }
.footer-grid a:hover { color: #fff; }
.footer-note { border-top: 1px solid rgba(255,255,255,.12); padding: 20px 0 90px; display: flex; justify-content: space-between; gap: 30px; font-size: 13px; }
.footer-note p { margin: 0; }
.floating-service { position: fixed; right: 18px; top: 50%; transform: translateY(-50%); z-index: 8000; display: grid; width: 112px; padding: 10px; background: rgba(255,255,255,.96); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); }
.floating-service a, .floating-service button { min-height: 42px; display: flex; align-items: center; justify-content: center; border: 0; background: transparent; color: var(--blue-deep); border-bottom: 1px solid var(--line); cursor: pointer; }
.floating-service .float-register { margin-bottom: 6px; border: 0; border-radius: 999px; color: #fff; background: linear-gradient(135deg, #45C7FF, #2FA8F7 48%, #137CD8); }
.floating-service button { border-bottom: 0; }
@media (max-width: 1120px) {
    .floating-service { display: none; }
    .header-inner { grid-template-columns: 170px 1fr auto; gap: 12px; }
    .core-nav a { padding: 10px 11px; }
}
@media (max-width: 860px) {
    body { padding-top: 64px; padding-bottom: 70px; }
    .desktop-header, .channel-bar { display: none; }
    .mobile-header {
        display: grid; position: fixed; inset: 0 0 auto 0; height: 64px; z-index: 9000; grid-template-columns: 54px 1fr auto; align-items: center; gap: 10px;
        padding: 0 14px; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(14px);
    }
    .menu-toggle { width: 44px; height: 44px; border: 0; border-radius: 12px; background: var(--soft); display: grid; place-content: center; gap: 5px; cursor: pointer; }
    .menu-toggle span { width: 22px; height: 2px; background: var(--blue-deep); border-radius: 2px; }
    .mobile-logo { justify-self: center; }
    .mobile-logo img { width: 128px; max-height: 42px; object-fit: contain; }
    .mobile-register { min-width: 76px; min-height: 44px; padding: 8px 16px; position: relative; z-index: 9100; }
    .drawer-mask { position: fixed; inset: 0; z-index: 9990; background: rgba(12,43,72,.45); opacity: 0; visibility: hidden; pointer-events: none; transition: opacity .2s ease; }
    .drawer-mask.is-visible { display: block; opacity: 1; visibility: visible; pointer-events: auto; }
    .mobile-drawer { display: block; position: fixed; left: 0; top: 0; bottom: 0; width: min(86vw, 360px); z-index: 10000; background: #fff; transform: translateX(-104%); transition: transform .25s ease; overflow-y: auto; box-shadow: 18px 0 45px rgba(14,56,92,.2); }
    .mobile-drawer.is-open { transform: translateX(0); }
    .drawer-top { min-height: 72px; display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid var(--line); }
    .drawer-logo img { width: 135px; max-height: 46px; object-fit: contain; }
    .drawer-close { width: 44px; height: 44px; border: 0; border-radius: 12px; background: var(--soft); color: var(--blue-deep); font-size: 30px; line-height: 1; cursor: pointer; }
    .drawer-nav { padding: 10px 14px 24px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .drawer-nav a { min-height: 44px; display: flex; align-items: center; padding: 10px 12px; border-radius: 12px; color: var(--muted); background: var(--soft); }
    .drawer-nav a.active { color: #fff; background: var(--blue); }
    .mobile-bottom-nav { display: grid; position: fixed; left: 0; right: 0; bottom: 0; z-index: 8500; grid-template-columns: repeat(4, 1fr); min-height: 62px; padding-bottom: env(safe-area-inset-bottom); background: rgba(255,255,255,.97); border-top: 1px solid var(--line); box-shadow: 0 -10px 26px rgba(25,75,115,.08); }
    .mobile-bottom-nav a { min-height: 56px; display: flex; align-items: center; justify-content: center; color: var(--muted); font-weight: 700; }
    .mobile-bottom-nav a:hover { color: var(--blue-deep); background: var(--soft); }
    .container { width: min(100% - 28px, 720px); }
    .banner-wrap { padding-top: 14px; }
    .slides { min-height: 0; aspect-ratio: 16 / 8.8; }
    .slider-arrow { width: 44px; height: 44px; }
    .brand-intro, .subhero-card, .about-panel, .content-grid { grid-template-columns: 1fr; }
    .brand-intro, .subhero-card { padding: 24px; }
    .quick-grid, .feature-triple, .topic-grid, .review-grid { grid-template-columns: repeat(2, 1fr); }
    .info-grid { grid-template-columns: repeat(2, 1fr); }
    .feature-pair, .split-panel { grid-template-columns: 1fr; }
    .side-card { position: static; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-brand { grid-column: 1 / -1; }
    .footer-note { flex-direction: column; padding-bottom: 28px; }
}
@media (max-width: 560px) {
    .section { padding: 25px 0; }
    .section-head { display: block; }
    .section-head h2 { font-size: 26px; }
    .quick-grid, .info-grid, .feature-triple, .topic-grid, .review-grid { grid-template-columns: 1fr; }
    .brand-intro h1, .subhero-card h1 { font-size: 31px; }
    .slider-arrow.prev { left: 8px; }
    .slider-arrow.next { right: 8px; }
    .slider-dots { bottom: 8px; }
    .article-card, .panel-box { padding: 22px; }
    .footer-grid { grid-template-columns: 1fr; gap: 22px; }
    .footer-brand { grid-column: auto; }
}