:root {
    --page: #EAF2FB;
    --content: #FFFFFF;
    --soft: #F4F8FF;
    --soft-2: #EDF5FF;
    --soft-3: #E1ECF8;
    --blue: #2FA8F7;
    --cyan: #45C7FF;
    --deep: #137CD8;
    --title: #137CD8;
    --text: #24364F;
    --muted: #5D718A;
    --border: rgba(47,168,247,0.14);
    --footer: #102B46;
    --footer-text: #EAF6FF;
    --shadow: 0 18px 48px rgba(39, 91, 139, 0.12);
    --radius: 26px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    padding-top: 124px;
    background: var(--page);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, 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; }
.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    height: 72px;
    z-index: 9000;
    background: rgba(255,255,255,.94);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}
.header-inner {
    width: min(1180px, calc(100% - 40px));
    height: 100%;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 220px 1fr 120px;
    align-items: center;
    gap: 24px;
}
.brand-logo { display: inline-flex; align-items: center; width: fit-content; }
.brand-logo img { width: 154px; height: 48px; object-fit: contain; }
.desktop-nav { display: flex; justify-content: center; align-items: stretch; height: 100%; gap: 6px; white-space: nowrap; }
.desktop-nav a {
    position: relative;
    display: inline-flex;
    align-items: center;
    padding: 0 20px;
    color: var(--muted);
    font-weight: 700;
    border-radius: 14px;
}
.desktop-nav a:hover { color: var(--deep); background: var(--soft); }
.desktop-nav a.active { color: var(--deep); }
.desktop-nav a.active::after {
    content: "";
    position: absolute;
    left: 28%; right: 28%; bottom: 8px;
    height: 3px;
    border-radius: 3px;
    background: var(--blue);
}
.main-btn, .float-register {
    display: inline-flex;
    min-width: 88px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    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, .float-register:hover { transform: translateY(-1px); box-shadow: 0 15px 30px rgba(19,124,216,.24); }
.header-register { justify-self: end; position: relative; z-index: 9100; }
.channel-bar {
    position: fixed;
    top: 72px; left: 0; right: 0;
    height: 52px;
    z-index: 8800;
    background: rgba(244,248,255,.94);
    border-bottom: 1px solid var(--border);
    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;
    overscroll-behavior-inline: contain;
    scrollbar-width: none;
}
.channel-scroll::-webkit-scrollbar { display: none; }
.channel-scroll a {
    flex: 0 0 auto;
    padding: 6px 13px;
    border-radius: 999px;
    color: var(--muted);
    font-size: 14px;
    font-weight: 650;
    white-space: nowrap;
}
.channel-scroll a:hover, .channel-scroll a.active { color: #fff; background: var(--blue); }
.mobile-header, .mobile-drawer, .drawer-mask, .mobile-bottom-nav { display: none; }
.site-main { min-height: 70vh; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.section { padding: 72px 0; }
.section.compact { padding: 48px 0; }
.section-head { max-width: 760px; margin-bottom: 30px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 4px 12px;
    margin-bottom: 12px;
    border-radius: 999px;
    background: var(--soft-2);
    color: var(--deep);
    font-size: 14px;
    font-weight: 800;
}
h1, h2, h3 { margin: 0 0 14px; color: var(--title); line-height: 1.28; }
h1 { font-size: clamp(32px, 5vw, 54px); }
h2 { font-size: clamp(26px, 3.5vw, 38px); }
h3 { font-size: 21px; }
p { margin: 0 0 16px; }
.lead { color: var(--muted); font-size: 18px; }
.text-link { display: inline-flex; align-items: center; gap: 6px; color: var(--deep); font-weight: 800; }
.text-link::after { content: "→"; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(4px); }
.banner-wrap { padding: 32px 0 26px; background: linear-gradient(180deg, var(--soft-3), var(--page)); }
.banner-slider {
    position: relative;
    z-index: 1;
    width: min(1180px, calc(100% - 40px));
    aspect-ratio: 16 / 6.25;
    min-height: 260px;
    margin: 0 auto;
    overflow: hidden;
    border: 10px solid rgba(255,255,255,.88);
    border-radius: 32px;
    background: #fff;
    box-shadow: 0 24px 56px rgba(39, 91, 139, .16);
}
.banner-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity .45s ease, visibility .45s ease;
}
.banner-slide.active { opacity: 1; visibility: visible; }
.banner-slide img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.slider-arrow {
    position: absolute;
    z-index: 3;
    top: 50%;
    width: 48px; height: 48px;
    transform: translateY(-50%);
    border: 0;
    border-radius: 50%;
    background: rgba(255,255,255,.9);
    color: var(--deep);
    box-shadow: 0 8px 24px rgba(16,43,70,.18);
    cursor: pointer;
    font-size: 34px;
    line-height: 1;
}
.slider-prev { left: 18px; }
.slider-next { right: 18px; }
.slider-dots { position: absolute; z-index: 3; left: 50%; bottom: 18px; display: flex; gap: 9px; transform: translateX(-50%); }
.slider-dot { width: 12px; height: 12px; padding: 0; border: 2px solid #fff; border-radius: 50%; background: rgba(19,124,216,.35); cursor: pointer; }
.slider-dot.active { width: 28px; border-radius: 999px; background: var(--deep); }
.split-card, .page-hero-card {
    display: grid;
    grid-template-columns: 1.08fr .92fr;
    gap: 42px;
    align-items: center;
    padding: 42px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--content);
    box-shadow: var(--shadow);
}
.split-card.reverse { grid-template-columns: .92fr 1.08fr; }
.split-card.reverse .media { order: -1; }
.media {
    overflow: hidden;
    border-radius: 22px;
    background: var(--soft);
    border: 1px solid var(--border);
}
.media img { width: 100%; aspect-ratio: 16 / 10; object-fit: contain; }
.quick-grid, .card-grid, .info-grid, .review-grid, .faq-grid { display: grid; gap: 18px; }
.quick-grid { grid-template-columns: repeat(3, 1fr); }
.card-grid.three { grid-template-columns: repeat(3, 1fr); }
.card-grid.two { grid-template-columns: repeat(2, 1fr); }
.info-grid { grid-template-columns: repeat(4, 1fr); }
.review-grid { grid-template-columns: repeat(3, 1fr); }
.faq-grid { grid-template-columns: repeat(2, 1fr); }
.quick-card, .info-card, .content-card, .review-card, .faq-card, .notice-card {
    border: 1px solid var(--border);
    border-radius: 22px;
    background: var(--content);
    box-shadow: 0 12px 34px rgba(39,91,139,.08);
}
.quick-card, .info-card, .review-card, .faq-card { padding: 26px; }
.quick-card { min-height: 210px; display: flex; flex-direction: column; }
.quick-card p { color: var(--muted); flex: 1; }
.info-card { min-height: 220px; background: linear-gradient(145deg, #fff, var(--soft)); }
.info-card .number { display: block; color: var(--cyan); font-size: 34px; font-weight: 900; line-height: 1; margin-bottom: 20px; }
.content-card { overflow: hidden; }
.content-card .media { border: 0; border-radius: 0; }
.content-card .card-body { padding: 28px; }
.content-card ul, .article-section ul { margin: 16px 0 20px; padding-left: 20px; color: var(--muted); }
.content-card li, .article-section li { margin: 7px 0; }
.platform-strip {
    padding: 26px 30px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: linear-gradient(90deg, var(--soft), #fff, var(--soft-2));
    color: var(--muted);
    text-align: center;
}
.soft-section { background: var(--soft); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.review-card blockquote { margin: 0; color: var(--text); }
.review-card .review-tag { display: inline-block; margin-top: 16px; color: var(--deep); font-size: 14px; font-weight: 800; }
.faq-card h3 { font-size: 18px; }
.faq-card p { color: var(--muted); }
.notice-card { padding: 34px; background: linear-gradient(135deg, #fff, var(--soft-2)); }
.page-hero { padding: 58px 0 28px; }
.page-hero-card { min-height: 420px; background: linear-gradient(145deg, #fff 0%, #fff 56%, var(--soft-2) 100%); }
.page-hero-card.no-image { grid-template-columns: 1fr; min-height: 330px; }
.page-hero-copy { max-width: 720px; }
.page-hero-copy .hero-links { display: flex; flex-wrap: wrap; gap: 12px 20px; margin-top: 24px; }
.page-hero-copy .hero-links a { color: var(--deep); font-weight: 800; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 290px; gap: 28px; align-items: start; }
.article-main { display: grid; gap: 22px; }
.article-section {
    padding: 34px;
    border: 1px solid var(--border);
    border-radius: 22px;
    background: #fff;
    box-shadow: 0 10px 30px rgba(39,91,139,.07);
}
.article-section p:last-child { margin-bottom: 0; }
.article-aside { position: sticky; top: 146px; display: grid; gap: 16px; }
.aside-card { padding: 25px; border: 1px solid var(--border); border-radius: 20px; background: #fff; }
.aside-card a { display: block; padding: 9px 0; color: var(--muted); border-bottom: 1px dashed var(--border); }
.aside-card a:last-child { border-bottom: 0; }
.aside-card a:hover { color: var(--deep); }
.steps { counter-reset: step; display: grid; gap: 14px; }
.step { position: relative; padding: 20px 20px 20px 66px; border-radius: 18px; background: var(--soft); }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 18px; top: 18px; width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; background: var(--blue); color: #fff; font-weight: 900; }
.accordion-list { display: grid; gap: 14px; }
details { border: 1px solid var(--border); border-radius: 18px; background: #fff; overflow: hidden; }
summary { min-height: 54px; padding: 15px 50px 15px 20px; color: var(--deep); font-weight: 800; cursor: pointer; position: relative; }
summary::after { content: "+"; position: absolute; right: 20px; top: 11px; font-size: 26px; }
details[open] summary::after { content: "−"; }
details p { padding: 0 20px 20px; color: var(--muted); }
.floating-service {
    position: fixed;
    z-index: 8000;
    right: 22px;
    top: 50%;
    transform: translateY(-50%);
    width: 112px;
    padding: 12px;
    display: grid;
    gap: 8px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: rgba(255,255,255,.94);
    box-shadow: var(--shadow);
    backdrop-filter: blur(12px);
}
.floating-service a, .floating-service button { min-height: 42px; display: grid; place-items: center; border: 0; border-radius: 13px; background: var(--soft); color: var(--deep); font-size: 14px; font-weight: 800; cursor: pointer; }
.floating-service .float-register { color: #fff; background: linear-gradient(135deg, #45C7FF 0%, #2FA8F7 48%, #137CD8 100%); }
.site-footer { background: var(--footer); color: var(--footer-text); padding: 64px 0 26px; }
.footer-grid { width: min(1180px, calc(100% - 40px)); margin: 0 auto; display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 48px; }
.footer-grid h2 { color: #fff; font-size: 18px; }
.footer-grid a { display: block; margin: 9px 0; color: rgba(234,246,255,.76); }
.footer-grid a:hover { color: #fff; }
.footer-brand img { width: 160px; height: 52px; object-fit: contain; margin-bottom: 18px; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 460px; color: rgba(234,246,255,.72); }
.footer-notice { width: min(1180px, calc(100% - 40px)); margin: 36px auto 0; padding-top: 22px; border-top: 1px solid rgba(234,246,255,.13); display: flex; justify-content: space-between; gap: 32px; color: rgba(234,246,255,.62); font-size: 14px; }
.footer-notice p:first-child { max-width: 850px; }
@media (max-width: 1260px) {
    .floating-service { display: none; }
}
@media (max-width: 980px) {
    .header-inner { grid-template-columns: 180px 1fr 100px; gap: 12px; }
    .desktop-nav a { padding: 0 12px; }
    .split-card, .page-hero-card { grid-template-columns: 1fr 1fr; gap: 28px; padding: 32px; }
    .quick-grid, .card-grid.three, .review-grid { grid-template-columns: repeat(2, 1fr); }
    .info-grid { grid-template-columns: repeat(2, 1fr); }
    .article-layout { grid-template-columns: 1fr; }
    .article-aside { position: static; grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
    .footer-grid section:last-child { grid-column: 2 / 4; }
}
@media (max-width: 760px) {
    body { padding-top: 64px; padding-bottom: 74px; }
    .desktop-header, .channel-bar { display: none; }
    .mobile-header {
        position: fixed;
        z-index: 9000;
        top: 0; left: 0; right: 0;
        height: 64px;
        display: grid;
        grid-template-columns: 64px 1fr 86px;
        align-items: center;
        padding: 0 12px;
        background: rgba(255,255,255,.96);
        border-bottom: 1px solid var(--border);
        backdrop-filter: blur(15px);
    }
    .menu-toggle, .drawer-close {
        width: 44px; height: 44px;
        border: 0;
        border-radius: 13px;
        background: var(--soft);
        color: var(--deep);
        font-size: 24px;
        cursor: pointer;
    }
    .mobile-logo { justify-self: center; }
    .mobile-logo img { width: 126px; height: 44px; object-fit: contain; }
    .mobile-register { position: relative; z-index: 9100; min-width: 74px; min-height: 44px; padding: 9px 15px; justify-self: end; }
    .drawer-mask {
        position: fixed;
        z-index: 9990;
        inset: 0;
        display: none;
        visibility: hidden;
        pointer-events: none;
        background: rgba(16,43,70,.42);
        opacity: 0;
        transition: opacity .2s ease;
    }
    .drawer-mask.is-open { display: block; visibility: visible; pointer-events: auto; opacity: 1; }
    .mobile-drawer {
        position: fixed;
        z-index: 10000;
        top: 0; bottom: 0; left: 0;
        width: min(86vw, 360px);
        display: block;
        overflow-y: auto;
        overscroll-behavior: contain;
        background: #fff;
        transform: translateX(-105%);
        transition: transform .22s ease;
        box-shadow: 20px 0 60px rgba(16,43,70,.2);
    }
    .mobile-drawer.is-open { transform: translateX(0); }
    .drawer-head { position: sticky; top: 0; z-index: 2; height: 72px; display: flex; align-items: center; justify-content: space-between; padding: 10px 16px; background: #fff; border-bottom: 1px solid var(--border); }
    .drawer-head img { width: 138px; height: 48px; object-fit: contain; }
    .drawer-nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; padding: 14px 14px 30px; }
    .drawer-nav a { min-height: 46px; display: flex; align-items: center; padding: 10px 13px; border-radius: 13px; background: var(--soft); color: var(--muted); font-weight: 700; }
    .drawer-nav a.active { background: var(--blue); color: #fff; }
    .mobile-bottom-nav {
        position: fixed;
        z-index: 8500;
        left: 0; right: 0; bottom: 0;
        height: 68px;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        padding-bottom: env(safe-area-inset-bottom);
        background: rgba(255,255,255,.97);
        border-top: 1px solid var(--border);
        box-shadow: 0 -8px 24px rgba(16,43,70,.08);
    }
    .mobile-bottom-nav a { min-width: 44px; min-height: 44px; display: grid; place-items: center; color: var(--muted); font-size: 14px; font-weight: 800; }
    .mobile-bottom-nav a.active { color: var(--deep); background: var(--soft); }
    .container { width: min(100% - 28px, 1180px); }
    .section { padding: 52px 0; }
    .section.compact { padding: 36px 0; }
    .banner-wrap { padding: 14px 0 18px; }
    .banner-slider { width: calc(100% - 28px); min-height: 0; aspect-ratio: 16 / 8.2; border-width: 5px; border-radius: 20px; }
    .slider-arrow { width: 44px; height: 44px; font-size: 30px; }
    .slider-prev { left: 8px; }
    .slider-next { right: 8px; }
    .slider-dots { bottom: 10px; }
    .split-card, .split-card.reverse, .page-hero-card { grid-template-columns: 1fr; padding: 24px; gap: 24px; }
    .split-card.reverse .media { order: 0; }
    .page-hero { padding: 28px 0 14px; }
    .page-hero-card { min-height: 0; }
    .page-hero-card .media { order: -1; }
    .quick-grid, .card-grid.three, .card-grid.two, .info-grid, .review-grid, .faq-grid { grid-template-columns: 1fr; }
    .quick-card, .info-card { min-height: 0; }
    .article-section { padding: 24px; }
    .article-aside { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px 22px; }
    .footer-brand { grid-column: 1 / 3; }
    .footer-grid section:last-child { grid-column: auto; }
    .footer-notice { flex-direction: column; gap: 8px; }
}
@media (max-width: 420px) {
    .drawer-nav { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-brand, .footer-grid section:last-child { grid-column: auto; }
    .slider-dot { width: 10px; height: 10px; }
    .slider-dot.active { width: 24px; }
}