:root {
    --page-bg: #EAF2FB;
    --surface: #FFFFFF;
    --surface-soft: #F4F8FF;
    --surface-mid: #EDF5FF;
    --surface-deep: #E1ECF8;
    --blue: #2FA8F7;
    --blue-light: #45C7FF;
    --blue-dark: #137CD8;
    --heading: #137CD8;
    --text: #24364F;
    --muted: #5D718A;
    --border: rgba(47,168,247,0.14);
    --footer: #102B46;
    --footer-text: #EAF6FF;
    --shadow: 0 18px 46px rgba(30, 90, 145, 0.11);
    --radius-lg: 30px;
    --radius-md: 22px;
    --radius-sm: 16px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body { margin: 0; min-width: 320px; overflow-x: hidden; background: var(--page-bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; line-height: 1.75; }
body.drawer-open { overflow-y: hidden; }
a { color: inherit; text-decoration: none; touch-action: manipulation; }
button { font: inherit; touch-action: manipulation; }
img { max-width: 100%; display: block; }
.shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.skip-link { position: fixed; top: -100px; left: 16px; z-index: 12000; padding: 10px 16px; border-radius: 10px; background: var(--blue-dark); color: #fff; }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 9000; }
.desktop-header { height: 76px; display: flex; align-items: center; gap: 30px; }
.site-header::before { content: ""; position: absolute; inset: 0 0 auto; height: 76px; background: rgba(255,255,255,.94); backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); box-shadow: 0 8px 24px rgba(32,83,128,.07); z-index: -1; }
.brand-logo { flex: 0 0 auto; display: flex; align-items: center; min-width: 150px; }
.brand-logo img, .mobile-logo img, .drawer-logo img, .footer-logo img { width: auto; object-fit: contain; }
.brand-logo img { height: 43px; max-width: 170px; }
.core-nav { flex: 1; display: flex; align-items: stretch; justify-content: center; gap: 8px; min-width: 0; }
.core-link { position: relative; display: flex; align-items: center; min-height: 44px; padding: 0 16px; border-radius: 999px; color: var(--muted); font-weight: 700; white-space: nowrap; }
.core-link:hover { background: var(--surface-mid); color: var(--blue-dark); }
.core-link.is-active { color: var(--blue-dark); }
.core-link.is-active::after { content: ""; position: absolute; left: 50%; bottom: -10px; width: 24px; height: 3px; border-radius: 999px; transform: translateX(-50%); background: var(--blue); }
.main-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; min-width: 92px; padding: 0 24px; border: 0; border-radius: 999px; background: linear-gradient(135deg, #45C7FF 0%, #2FA8F7 48%, #137CD8 100%); color: #fff; font-weight: 800; box-shadow: 0 12px 26px rgba(19,124,216,0.18); }
.main-btn:hover { transform: translateY(-1px); box-shadow: 0 16px 32px rgba(19,124,216,.24); }
.header-register { position: relative; z-index: 9100; flex: 0 0 auto; }
.channel-wrap { background: rgba(244,248,255,.94); border-bottom: 1px solid var(--border); }
.channel-bar { height: 48px; display: flex; align-items: center; gap: 8px; overflow-x: auto; scrollbar-width: none; }
.channel-bar::-webkit-scrollbar { display: none; }
.channel-link { flex: 0 0 auto; padding: 6px 12px; border-radius: 999px; color: var(--muted); font-size: 14px; line-height: 1.4; white-space: nowrap; }
.channel-link:hover, .channel-link.is-active { color: #fff; background: linear-gradient(135deg, var(--blue-light), var(--blue-dark)); }
.mobile-header { display: none; }
.mobile-drawer { position: fixed; top: 0; left: 0; z-index: 10000; width: min(86vw, 360px); height: 100dvh; background: #fff; transform: translateX(-104%); transition: transform .22s ease; box-shadow: 24px 0 60px rgba(15,52,83,.2); overflow-y: auto; overscroll-behavior: contain; }
.mobile-drawer.is-open { transform: translateX(0); }
.drawer-mask { position: fixed; inset: 0; z-index: 9990; background: rgba(10,39,68,.42); opacity: 0; visibility: hidden; pointer-events: none; transition: opacity .2s ease, visibility .2s 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; gap: 16px; padding: 18px 18px 14px; background: #fff; border-bottom: 1px solid var(--border); }
.drawer-logo img { height: 40px; max-width: 160px; }
.drawer-close { width: 44px; height: 44px; border: 0; border-radius: 50%; background: var(--surface-mid); color: var(--blue-dark); font-size: 29px; line-height: 1; cursor: pointer; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; padding: 16px 18px calc(30px + env(safe-area-inset-bottom)); }
.drawer-link { min-height: 46px; display: flex; align-items: center; padding: 0 14px; border-radius: 13px; background: var(--surface-soft); color: var(--muted); font-weight: 700; }
.drawer-link:hover, .drawer-link.is-active { color: #fff; background: linear-gradient(135deg, var(--blue-light), var(--blue-dark)); }
.site-main { min-height: 60vh; }
.banner-shell { padding: 28px 0 16px; }
.banner-frame { padding: 14px; border-radius: 34px; background: rgba(255,255,255,.92); box-shadow: var(--shadow); }
.banner-slider { position: relative; z-index: 1; overflow: hidden; border-radius: 26px; background: var(--surface-deep); aspect-ratio: 16 / 5.65; min-height: 230px; }
.slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .5s ease; }
.slide.is-active { opacity: 1; visibility: visible; }
.slide img { width: 100%; height: 100%; object-fit: contain; background: var(--surface-mid); }
.slider-btn { position: absolute; top: 50%; z-index: 3; width: 46px; height: 46px; margin-top: -23px; border: 0; border-radius: 50%; background: rgba(255,255,255,.9); color: var(--blue-dark); box-shadow: 0 8px 22px rgba(10,55,95,.15); font-size: 28px; cursor: pointer; }
.slider-prev { left: 18px; }
.slider-next { right: 18px; }
.slider-dots { position: absolute; left: 50%; bottom: 16px; z-index: 3; display: flex; gap: 8px; transform: translateX(-50%); }
.slider-dot { width: 12px; height: 12px; padding: 0; border: 2px solid rgba(255,255,255,.9); border-radius: 50%; background: rgba(19,124,216,.35); cursor: pointer; }
.slider-dot.is-active { width: 30px; border-radius: 999px; background: #fff; }
.page-hero { padding: 54px 0 30px; }
.hero-card { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(300px, .85fr); align-items: center; gap: 38px; padding: 46px; border-radius: var(--radius-lg); background: linear-gradient(135deg, #fff 0%, #f8fbff 55%, #e8f4ff 100%); border: 1px solid var(--border); box-shadow: var(--shadow); }
.hero-card.no-image { grid-template-columns: 1fr; }
.eyebrow { display: inline-flex; align-items: center; min-height: 32px; padding: 0 14px; border-radius: 999px; background: var(--surface-mid); color: var(--blue-dark); font-size: 14px; font-weight: 800; }
h1, h2, h3 { margin: 0; color: var(--heading); line-height: 1.3; }
h1 { margin-top: 14px; font-size: clamp(34px, 5vw, 56px); letter-spacing: -.02em; }
h2 { font-size: clamp(26px, 3.5vw, 38px); }
h3 { font-size: 21px; }
.hero-lead { margin: 20px 0 0; max-width: 760px; color: var(--muted); font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.text-link { display: inline-flex; align-items: center; min-height: 44px; color: var(--blue-dark); font-weight: 800; }
.text-link::after { content: "→"; margin-left: 8px; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(4px); }
.hero-image { border-radius: 24px; background: #fff; overflow: hidden; box-shadow: 0 16px 36px rgba(19,124,216,.12); }
.hero-image img { width: 100%; max-height: 390px; object-fit: contain; }
.content-section { padding: 42px 0; }
.content-section.compact { padding: 26px 0; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 24px; }
.section-head p { max-width: 700px; margin: 8px 0 0; color: var(--muted); }
.info-strip { padding: 24px 28px; border-radius: var(--radius-md); background: linear-gradient(135deg, var(--blue-dark), var(--blue)); color: #fff; box-shadow: 0 16px 34px rgba(19,124,216,.2); }
.info-strip p { margin: 0; font-size: 17px; }
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.card-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.content-card { min-width: 0; padding: 26px; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); box-shadow: 0 12px 32px rgba(31,83,128,.075); }
.content-card.soft { background: var(--surface-soft); }
.content-card p { margin: 12px 0 0; color: var(--muted); }
.content-card ul { margin: 16px 0 0; padding-left: 20px; color: var(--muted); }
.content-card li + li { margin-top: 8px; }
.card-image { margin: -8px -8px 20px; border-radius: 18px; overflow: hidden; background: var(--surface-mid); }
.card-image img { width: 100%; height: 220px; object-fit: contain; }
.split-feature { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .9fr); gap: 24px; align-items: stretch; }
.split-feature.reverse .feature-image { order: -1; }
.feature-copy, .feature-image { border: 1px solid var(--border); border-radius: var(--radius-lg); background: #fff; box-shadow: 0 14px 34px rgba(31,83,128,.08); }
.feature-copy { padding: 36px; }
.feature-copy p { color: var(--muted); }
.feature-copy ul { padding-left: 20px; color: var(--muted); }
.feature-image { display: flex; align-items: center; justify-content: center; min-height: 320px; padding: 16px; overflow: hidden; background: var(--surface-mid); }
.feature-image img { width: 100%; max-height: 420px; object-fit: contain; }
.quick-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.quick-item { display: flex; flex-direction: column; min-height: 180px; padding: 24px; border-radius: 22px; background: #fff; border: 1px solid var(--border); box-shadow: 0 10px 28px rgba(31,83,128,.06); }
.quick-item p { flex: 1; margin: 10px 0 8px; color: var(--muted); }
.stats-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 16px; }
.stat-card { padding: 24px; border-radius: 20px; background: var(--surface); border: 1px solid var(--border); }
.stat-card strong { display: block; margin-bottom: 8px; color: var(--blue-dark); font-size: 20px; }
.stat-card p { margin: 0; color: var(--muted); }
.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.review-card { position: relative; padding: 26px; border-radius: 22px; background: #fff; border: 1px solid var(--border); }
.review-card::before { content: "“"; position: absolute; right: 18px; top: 2px; color: var(--surface-deep); font-size: 74px; font-weight: 900; line-height: 1; }
.review-card p { position: relative; margin: 0; color: var(--muted); }
.review-card span { display: block; margin-top: 14px; color: var(--blue-dark); font-weight: 800; }
.faq-list { display: grid; gap: 14px; }
.faq-item { border-radius: 18px; background: #fff; border: 1px solid var(--border); overflow: hidden; }
.faq-item details { padding: 0 24px; }
.faq-item summary { min-height: 62px; display: flex; align-items: center; justify-content: space-between; gap: 20px; color: var(--heading); font-weight: 800; cursor: pointer; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--blue); font-size: 24px; }
.faq-item details[open] summary::after { content: "−"; }
.faq-answer { padding: 0 0 20px; color: var(--muted); }
.cta-box { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 34px; border-radius: 26px; background: linear-gradient(135deg, #fff, #edf7ff); border: 1px solid var(--border); box-shadow: var(--shadow); }
.cta-box p { margin: 8px 0 0; color: var(--muted); }
.floating-service { position: fixed; top: 50%; right: 18px; z-index: 8000; width: 112px; padding: 12px; border-radius: 20px; background: rgba(255,255,255,.95); border: 1px solid var(--border); box-shadow: 0 18px 40px rgba(18,65,108,.16); transform: translateY(-50%); backdrop-filter: blur(12px); }
.floating-service a, .floating-service button { width: 100%; min-height: 42px; display: flex; align-items: center; justify-content: center; margin: 5px 0; border: 0; border-radius: 12px; background: transparent; color: var(--blue-dark); font-weight: 800; cursor: pointer; }
.floating-service .floating-register { min-width: 0; color: #fff; border-radius: 999px; }
.floating-service a:not(.floating-register):hover, .floating-service button:hover { background: var(--surface-mid); }
.site-footer { margin-top: 56px; padding: 54px 0 24px; background: var(--footer); color: var(--footer-text); }
.footer-grid { display: grid; grid-template-columns: 1.45fr 1fr 1fr 1.25fr; gap: 34px; }
.footer-grid h2 { margin-bottom: 16px; color: #fff; font-size: 18px; }
.footer-grid a { display: block; margin: 9px 0; color: #d5ebff; }
.footer-grid a:hover { color: #fff; }
.footer-grid p { margin: 12px 0 0; color: #c5def3; font-size: 14px; }
.footer-logo img { height: 46px; max-width: 170px; filter: brightness(0) invert(1); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 36px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.12); color: #b8d2e9; font-size: 14px; }
.mobile-bottom-nav { display: none; }
.notice-list { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.notice-list li { padding: 16px 18px; border-radius: 14px; background: var(--surface-soft); color: var(--muted); }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; color: var(--muted); font-size: 14px; }
.breadcrumb a { color: var(--blue-dark); }
.article-copy { max-width: 900px; }
.article-copy p { margin: 0 0 18px; color: var(--muted); }
.article-copy h2 { margin: 34px 0 14px; }
.article-copy h3 { margin: 26px 0 10px; }
.table-wrap { overflow-x: auto; border-radius: 18px; border: 1px solid var(--border); background: #fff; }
table { width: 100%; border-collapse: collapse; min-width: 680px; }
th, td { padding: 16px 18px; text-align: left; border-bottom: 1px solid var(--border); }
th { color: var(--heading); background: var(--surface-soft); }
td { color: var(--muted); }
@media (max-width: 1240px) { .floating-service { right: 8px; width: 104px; } }
@media (max-width: 1050px) {
    .core-link { padding: 0 11px; }
    .brand-logo { min-width: 130px; }
    .floating-service { display: none; }
    .card-grid.four, .stats-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .footer-grid { grid-template-columns: 1.3fr 1fr 1fr; }
    .footer-grid section:last-child { grid-column: 1 / -1; }
}
@media (max-width: 820px) {
    .shell { width: min(100% - 28px, 1180px); }
    .desktop-header, .channel-wrap { display: none; }
    .site-header::before { height: 68px; }
    .mobile-header { position: relative; z-index: 9000; height: 68px; display: grid; grid-template-columns: 84px 1fr 84px; align-items: center; padding: 0 14px; background: rgba(255,255,255,.95); backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); }
    .menu-toggle { width: 44px; height: 44px; display: grid; align-content: center; gap: 5px; padding: 0 11px; border: 0; border-radius: 13px; background: var(--surface-mid); cursor: pointer; }
    .menu-toggle span { height: 2px; border-radius: 999px; background: var(--blue-dark); }
    .mobile-logo { justify-self: center; max-width: 150px; }
    .mobile-logo img { height: 40px; max-width: 150px; }
    .mobile-register { position: relative; z-index: 9100; justify-self: end; min-width: 76px; padding: 0 16px; }
    .banner-shell { padding-top: 16px; }
    .banner-frame { padding: 8px; border-radius: 22px; }
    .banner-slider { min-height: 170px; border-radius: 17px; aspect-ratio: 16/7.3; }
    .slider-btn { width: 44px; height: 44px; }
    .slider-prev { left: 8px; }
    .slider-next { right: 8px; }
    .slider-dots { bottom: 10px; }
    .page-hero { padding: 28px 0 18px; }
    .hero-card { grid-template-columns: 1fr; padding: 30px; gap: 24px; }
    h1 { font-size: clamp(32px, 9vw, 46px); }
    .hero-lead { font-size: 17px; }
    .card-grid, .card-grid.two, .card-grid.four, .quick-grid, .review-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .split-feature, .split-feature.reverse { grid-template-columns: 1fr; }
    .split-feature.reverse .feature-image { order: 0; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid section:last-child { grid-column: 1 / -1; }
    .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: 62px; padding: 7px; border-radius: 22px; background: rgba(255,255,255,.96); border: 1px solid var(--border); box-shadow: 0 16px 42px rgba(13,61,103,.18); backdrop-filter: blur(16px); }
    .mobile-bottom-nav a { min-height: 48px; display: flex; align-items: center; justify-content: center; border-radius: 15px; color: var(--muted); font-weight: 800; }
    .mobile-bottom-nav a.is-active { color: #fff; background: linear-gradient(135deg, var(--blue-light), var(--blue-dark)); }
    .site-footer { padding-bottom: calc(104px + env(safe-area-inset-bottom)); }
}
@media (max-width: 590px) {
    .shell { width: min(100% - 22px, 1180px); }
    .mobile-header { grid-template-columns: 72px 1fr 72px; padding: 0 10px; }
    .mobile-logo img { height: 36px; max-width: 132px; }
    .mobile-register { min-width: 68px; padding: 0 12px; }
    .banner-slider { min-height: 145px; }
    .slider-btn { width: 40px; height: 40px; margin-top: -20px; font-size: 22px; }
    .hero-card { padding: 24px 20px; border-radius: 23px; }
    .hero-actions { align-items: stretch; }
    .hero-actions .main-btn, .hero-actions .text-link { flex: 1 1 140px; }
    .content-section { padding: 32px 0; }
    .section-head { display: block; }
    .card-grid, .card-grid.two, .card-grid.four, .quick-grid, .review-grid, .stats-grid { grid-template-columns: 1fr; }
    .content-card, .feature-copy { padding: 22px; }
    .feature-image { min-height: 230px; }
    .card-image img { height: 190px; }
    .cta-box { display: block; padding: 26px 22px; }
    .cta-box .main-btn { margin-top: 18px; width: 100%; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-grid section:last-child { grid-column: auto; }
    .footer-bottom { display: block; }
    .footer-bottom span { display: block; margin-top: 6px; }
    .drawer-nav { grid-template-columns: 1fr; }
}