:root {
    --page-bg: #EAF2FB;
    --surface: #FFFFFF;
    --soft: #F4F8FF;
    --soft-2: #EDF5FF;
    --soft-3: #E1ECF8;
    --blue: #2FA8F7;
    --blue-light: #45C7FF;
    --blue-deep: #137CD8;
    --text: #24364F;
    --muted: #5D718A;
    --border: rgba(47,168,247,0.14);
    --footer: #102B46;
    --footer-text: #EAF6FF;
    --shadow: 0 18px 48px rgba(36, 72, 112, 0.10);
    --radius-lg: 30px;
    --radius-md: 20px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
    margin: 0;
    overflow-x: hidden;
    background: var(--page-bg);
    color: var(--text);
    font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.75;
    -webkit-text-size-adjust: 100%;
}
body.drawer-open { overflow-y: hidden; }
a { color: inherit; text-decoration: none; }
a, button { touch-action: manipulation; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
img { display: block; max-width: 100%; }
.skip-link {
    position: fixed; left: 12px; top: -80px; z-index: 12000;
    padding: 10px 16px; border-radius: 12px; background: #fff; color: var(--blue-deep);
}
.skip-link:focus { top: 12px; }
.main-btn {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 88px; min-height: 44px; padding: 0 24px;
    background: linear-gradient(135deg, #45C7FF 0%, #2FA8F7 48%, #137CD8 100%);
    color: #fff; border: 0; border-radius: 999px;
    box-shadow: 0 12px 26px rgba(19,124,216,0.18);
    font-weight: 700; letter-spacing: .04em;
    transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 16px 30px rgba(19,124,216,0.23); }
.desktop-header {
    position: fixed; inset: 0 0 auto 0; z-index: 9000;
    height: 76px; background: rgba(255,255,255,.92);
    backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}
.header-inner {
    width: min(1240px, calc(100% - 48px)); height: 100%; margin: 0 auto;
    display: grid; grid-template-columns: 210px 1fr 110px; align-items: center; gap: 24px;
}
.brand-logo { display: inline-flex; align-items: center; width: 170px; height: 54px; }
.brand-logo img { max-width: 100%; max-height: 44px; object-fit: contain; }
.core-nav { display: flex; justify-content: center; align-items: stretch; height: 100%; white-space: nowrap; }
.core-nav-link {
    position: relative; display: inline-flex; align-items: center; padding: 0 21px;
    color: var(--muted); font-weight: 700; transition: color .2s ease, background .2s ease;
}
.core-nav-link:hover { color: var(--blue-deep); background: var(--soft); }
.core-nav-link::after {
    content: ""; position: absolute; left: 50%; bottom: 10px; width: 0; height: 3px;
    border-radius: 999px; background: var(--blue); transform: translateX(-50%); transition: width .2s ease;
}
.core-nav-link.is-active { color: var(--blue-deep); }
.core-nav-link.is-active::after { width: 26px; }
.header-register { justify-self: end; }
.channel-bar {
    position: fixed; inset: 76px 0 auto 0; z-index: 8900; height: 58px;
    background: rgba(244,248,255,.94); border-bottom: 1px solid var(--border);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
.channel-inner {
    width: min(1320px, calc(100% - 36px)); height: 100%; margin: 0 auto;
    display: flex; align-items: center; gap: 8px; overflow-x: auto; overscroll-behavior-inline: contain;
    scrollbar-width: none;
}
.channel-inner::-webkit-scrollbar { display: none; }
.channel-link {
    flex: 0 0 auto; padding: 7px 13px; border-radius: 999px; color: var(--muted);
    font-size: 14px; line-height: 1.4; transition: color .2s ease, background .2s ease;
}
.channel-link:hover, .channel-link.is-active { color: var(--blue-deep); background: #fff; box-shadow: 0 6px 20px rgba(19,124,216,.08); }
.mobile-header, .mobile-drawer, .drawer-mask, .mobile-bottom-nav { display: none; }
.floating-service {
    position: fixed; z-index: 8000; right: max(14px, calc((100vw - 1440px) / 2)); top: 50%;
    width: 118px; padding: 12px; transform: translateY(-50%);
    background: rgba(255,255,255,.96); border: 1px solid var(--border); border-radius: 22px;
    box-shadow: 0 18px 38px rgba(36,72,112,.14); display: grid; gap: 7px;
}
.floating-service > a:not(.main-btn), .floating-service button {
    min-height: 40px; border: 0; border-radius: 12px; background: transparent; color: var(--blue-deep);
    display: flex; align-items: center; justify-content: center; font-size: 14px;
}
.floating-service > a:not(.main-btn):hover, .floating-service button:hover { background: var(--soft-2); }
.floating-register { min-width: 0; padding: 0 16px; min-height: 42px; }
.site-main { padding-top: 156px; padding-bottom: 76px; }
.container { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }
.section { margin-top: 28px; }
.surface {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}
.eyebrow { margin: 0 0 8px; color: var(--blue); font-weight: 800; letter-spacing: .12em; font-size: 13px; }
.section-title { margin: 0; color: var(--blue-deep); font-size: clamp(26px, 3vw, 40px); line-height: 1.28; }
.section-lead { margin: 14px 0 0; color: var(--muted); font-size: 17px; }
.text-link { color: var(--blue-deep); font-weight: 700; display: inline-flex; align-items: center; min-height: 44px; }
.text-link:hover { color: var(--blue); }
.text-link::after { content: "→"; margin-left: 8px; }
.banner-slider { position: relative; z-index: 1; padding: 14px; overflow: hidden; }
.slider-viewport { position: relative; aspect-ratio: 16 / 6.2; min-height: 260px; border-radius: 23px; overflow: hidden; background: var(--soft-2); }
.slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .45s ease; }
.slide.is-active { opacity: 1; visibility: visible; }
.slide img { width: 100%; height: 100%; object-fit: contain; background: var(--soft-2); }
.slider-arrow {
    position: absolute; z-index: 4; top: 50%; width: 48px; height: 48px; transform: translateY(-50%);
    border: 1px solid rgba(255,255,255,.75); border-radius: 50%; background: rgba(16,43,70,.54); color: #fff;
    display: grid; place-items: center; font-size: 30px; line-height: 1;
}
.slider-arrow:hover { background: rgba(19,124,216,.88); }
.slider-arrow.prev { left: 24px; }
.slider-arrow.next { right: 24px; }
.slider-dots { position: absolute; z-index: 4; left: 50%; bottom: 24px; display: flex; gap: 9px; transform: translateX(-50%); }
.slider-dot { width: 12px; height: 12px; padding: 0; border: 2px solid #fff; border-radius: 50%; background: rgba(255,255,255,.46); }
.slider-dot.is-active { width: 30px; border-radius: 999px; background: #fff; }
.split-hero { display: grid; grid-template-columns: 1.08fr .92fr; gap: 34px; align-items: center; padding: 42px; }
.split-hero-copy p { color: var(--muted); }
.hero-image { border-radius: 24px; overflow: hidden; background: var(--soft-2); }
.hero-image img { width: 100%; max-height: 410px; object-fit: contain; }
.quick-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 24px; }
.quick-card { padding: 23px; border-radius: 22px; background: #fff; border: 1px solid var(--border); transition: transform .2s ease, box-shadow .2s ease; }
.quick-card:hover { transform: translateY(-4px); box-shadow: 0 14px 32px rgba(36,72,112,.10); }
.quick-card h3 { margin: 0; color: var(--blue-deep); }
.quick-card p { margin: 8px 0 0; color: var(--muted); }
.info-strip { padding: 24px 30px; background: linear-gradient(120deg, #fff, #EDF5FF); color: var(--muted); }
.dashboard-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 22px; }
.dashboard-card { padding: 23px; background: #fff; border: 1px solid var(--border); border-radius: 22px; }
.dashboard-card h3 { color: var(--blue-deep); margin: 0 0 8px; }
.dashboard-card p { margin: 0; color: var(--muted); }
.content-pair { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.content-card { padding: 28px; overflow: hidden; }
.content-card h3 { margin: 0; color: var(--blue-deep); font-size: 25px; }
.content-card p { color: var(--muted); }
.content-card img { width: 100%; height: 240px; object-fit: contain; background: var(--soft); border-radius: 18px; margin-bottom: 22px; }
.feature-list { margin: 16px 0 0; padding: 0; list-style: none; display: grid; gap: 9px; }
.feature-list li { position: relative; padding-left: 23px; color: var(--muted); }
.feature-list li::before { content: ""; position: absolute; left: 0; top: .72em; width: 9px; height: 9px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 5px rgba(47,168,247,.10); }
.triple-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.mini-card { padding: 24px; }
.mini-card img { width: 100%; height: 190px; object-fit: contain; background: var(--soft); border-radius: 18px; margin-bottom: 18px; }
.mini-card h3 { margin: 0; color: var(--blue-deep); }
.mini-card p { color: var(--muted); }
.notice-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.notice-list, .news-list { padding: 28px; }
.notice-list h2, .news-list h2 { margin-top: 0; color: var(--blue-deep); }
.list-item { padding: 17px 0; border-bottom: 1px solid var(--border); }
.list-item:last-child { border-bottom: 0; }
.list-item h3 { margin: 0 0 5px; font-size: 17px; }
.list-item p { margin: 0; color: var(--muted); }
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 22px; }
.review-card { padding: 24px; background: #fff; border: 1px solid var(--border); border-radius: 22px; }
.review-card p { margin: 0; color: var(--muted); }
.review-card strong { display: block; margin-top: 15px; color: var(--blue-deep); }
.faq-list { display: grid; gap: 14px; margin-top: 22px; }
.faq-item { padding: 22px 24px; background: #fff; border: 1px solid var(--border); border-radius: 19px; }
.faq-item h3 { margin: 0; color: var(--blue-deep); font-size: 18px; }
.faq-item p { margin: 9px 0 0; color: var(--muted); }
.page-hero { display: grid; grid-template-columns: 1.1fr .9fr; gap: 36px; padding: 42px; align-items: center; }
.page-hero.no-image { grid-template-columns: 1fr; }
.page-hero h1 { margin: 0; color: var(--blue-deep); font-size: clamp(34px, 4vw, 54px); line-height: 1.2; }
.page-hero p { margin: 18px 0 0; color: var(--muted); font-size: 17px; }
.page-hero img { width: 100%; max-height: 410px; object-fit: contain; background: var(--soft); border-radius: 24px; }
.page-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 24px; }
.page-actions .secondary-btn { display: inline-flex; min-height: 44px; align-items: center; padding: 0 20px; border: 1px solid var(--border); border-radius: 999px; color: var(--blue-deep); font-weight: 700; background: #fff; }
.page-section { padding: 32px; }
.page-section h2 { margin: 0 0 12px; color: var(--blue-deep); font-size: 28px; }
.page-section p { color: var(--muted); }
.page-section-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.guide-steps { counter-reset: step; display: grid; gap: 16px; margin-top: 20px; }
.guide-step { position: relative; padding: 20px 22px 20px 72px; background: var(--soft); border-radius: 18px; }
.guide-step::before { counter-increment: step; content: counter(step); position: absolute; left: 20px; top: 18px; width: 36px; height: 36px; display: grid; place-items: center; border-radius: 50%; color: #fff; font-weight: 800; background: var(--blue); }
.guide-step h3 { margin: 0; color: var(--blue-deep); }
.guide-step p { margin: 6px 0 0; }
.cta-panel { padding: 34px; text-align: center; background: linear-gradient(135deg, #fff, #E1ECF8); }
.cta-panel h2 { margin: 0; color: var(--blue-deep); }
.cta-panel p { color: var(--muted); }
.site-footer { background: var(--footer); color: var(--footer-text); padding: 54px 0 26px; }
.footer-inner { width: min(1180px, calc(100% - 48px)); margin: 0 auto; display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 34px; }
.footer-brand img { width: 170px; max-height: 50px; object-fit: contain; filter: brightness(0) invert(1); }
.footer-brand p { color: rgba(234,246,255,.72); max-width: 430px; }
.footer-column { display: grid; align-content: start; gap: 8px; }
.footer-column h2 { margin: 0 0 8px; font-size: 17px; color: #fff; }
.footer-column a { color: rgba(234,246,255,.72); min-height: 34px; }
.footer-column a:hover { color: #fff; }
.footer-notice { width: min(1180px, calc(100% - 48px)); margin: 34px auto 0; padding-top: 22px; border-top: 1px solid rgba(234,246,255,.14); color: rgba(234,246,255,.65); font-size: 14px; }
.footer-notice p { margin: 6px 0; }
@media (max-width: 1240px) {
    .floating-service { display: none; }
    .header-inner { grid-template-columns: 180px 1fr 100px; }
    .core-nav-link { padding: 0 14px; }
}
@media (max-width: 900px) {
    .quick-grid, .triple-grid, .review-grid { grid-template-columns: repeat(2, 1fr); }
    .dashboard-grid { grid-template-columns: repeat(2, 1fr); }
    .split-hero, .page-hero { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1.5fr 1fr 1fr; }
    .footer-column:last-child { grid-column: 2 / 4; }
}
@media (max-width: 720px) {
    .desktop-header, .channel-bar { display: none; }
    .mobile-header {
        position: fixed; inset: 0 0 auto 0; z-index: 9000; height: 68px; padding: 0 14px;
        display: grid; grid-template-columns: 50px 1fr 82px; align-items: center; gap: 10px;
        background: rgba(255,255,255,.96); border-bottom: 1px solid var(--border);
        backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
    }
    .mobile-menu-btn { width: 46px; height: 46px; padding: 0 12px; border: 0; border-radius: 14px; background: var(--soft); display: grid; align-content: center; gap: 5px; }
    .mobile-menu-btn span { display: block; width: 22px; height: 2px; border-radius: 2px; background: var(--blue-deep); }
    .mobile-logo { justify-self: center; width: 132px; height: 48px; display: flex; align-items: center; justify-content: center; }
    .mobile-logo img { max-height: 38px; object-fit: contain; }
    .mobile-register { justify-self: end; min-width: 72px; min-height: 44px; padding: 0 16px; position: relative; z-index: 9001; }
    .drawer-mask {
        display: block; position: fixed; inset: 0; z-index: 9990; border: 0; padding: 0;
        background: rgba(16,43,70,.48); opacity: 0; visibility: hidden; pointer-events: none;
        transition: opacity .25s ease, visibility .25s ease;
    }
    .drawer-mask.is-visible { opacity: 1; visibility: visible; pointer-events: auto; }
    .mobile-drawer {
        display: flex; flex-direction: column; position: fixed; inset: 0 auto 0 0; z-index: 10000; width: min(86vw, 360px);
        background: #fff; transform: translateX(-104%); transition: transform .28s ease; box-shadow: 24px 0 60px rgba(16,43,70,.22);
    }
    .mobile-drawer.is-open { transform: translateX(0); }
    .drawer-head { min-height: 76px; padding: 12px 16px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
    .drawer-logo { width: 150px; }
    .drawer-logo img { max-height: 44px; object-fit: contain; }
    .drawer-close { width: 46px; height: 46px; border: 0; border-radius: 14px; background: var(--soft); color: var(--blue-deep); font-size: 30px; line-height: 1; }
    .drawer-nav { overflow-y: auto; overscroll-behavior: contain; padding: 12px 14px calc(26px + env(safe-area-inset-bottom)); display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
    .drawer-link { min-height: 46px; display: flex; align-items: center; padding: 0 14px; border-radius: 13px; color: var(--muted); background: var(--soft); }
    .drawer-link.is-active { color: var(--blue-deep); background: var(--soft-3); font-weight: 800; }
    .mobile-bottom-nav {
        position: fixed; inset: auto 0 0 0; z-index: 8500; min-height: 62px; padding-bottom: env(safe-area-inset-bottom);
        display: grid; grid-template-columns: repeat(4, 1fr); background: rgba(255,255,255,.97); border-top: 1px solid var(--border);
        box-shadow: 0 -10px 28px rgba(36,72,112,.10);
    }
    .mobile-bottom-nav a { min-height: 62px; display: flex; align-items: center; justify-content: center; color: var(--muted); font-size: 14px; }
    .mobile-bottom-nav a.is-active { color: var(--blue-deep); font-weight: 800; }
    .site-main { padding-top: 88px; padding-bottom: 104px; }
    .container { width: min(100% - 28px, 680px); }
    .section { margin-top: 18px; }
    .surface { border-radius: 22px; }
    .banner-slider { padding: 8px; }
    .slider-viewport { min-height: 170px; aspect-ratio: 16 / 8.4; border-radius: 17px; }
    .slider-arrow { width: 44px; height: 44px; font-size: 25px; }
    .slider-arrow.prev { left: 13px; }
    .slider-arrow.next { right: 13px; }
    .slider-dots { bottom: 4px; gap: 0; }
    .slider-dot, .slider-dot.is-active {
        position: relative; width: 44px; height: 44px; padding: 0; border: 0; background: transparent;
    }
    .slider-dot::before {
        content: ""; position: absolute; left: 50%; top: 50%; width: 12px; height: 12px;
        border: 2px solid #fff; border-radius: 999px; background: rgba(255,255,255,.46);
        transform: translate(-50%, -50%);
    }
    .slider-dot.is-active::before { width: 28px; background: #fff; }
    .split-hero, .page-hero { padding: 26px 22px; gap: 24px; }
    .quick-grid, .dashboard-grid, .content-pair, .triple-grid, .notice-grid, .review-grid, .page-section-grid { grid-template-columns: 1fr; }
    .quick-card, .content-card, .mini-card, .review-card, .page-section, .notice-list, .news-list { padding: 22px; }
    .info-strip { padding: 22px; }
    .hero-image img, .page-hero img { max-height: 300px; }
    .footer-inner { grid-template-columns: 1fr 1fr; width: min(100% - 32px, 680px); }
    .footer-brand { grid-column: 1 / 3; }
    .footer-column:last-child { grid-column: auto; }
    .footer-notice { width: min(100% - 32px, 680px); }
}
@media (max-width: 430px) {
    .mobile-header { grid-template-columns: 48px 1fr 72px; padding-inline: 10px; }
    .mobile-logo { width: 112px; }
    .mobile-register { min-width: 66px; padding: 0 12px; }
    .drawer-nav { grid-template-columns: 1fr; }
    .section-title { font-size: 28px; }
    .page-hero h1 { font-size: 36px; }
    .footer-inner { grid-template-columns: 1fr; }
    .footer-brand { grid-column: auto; }
}