* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: #F4F5F7;
    color: #1D222B;
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    line-height: 1.72;
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 9999;
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(20,28,40,0.08);
}
.header-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 72px;
}
.logo, .drawer-logo, .footer-logo { flex: 0 0 auto; }
.logo img { max-height: 52px; width: auto; display: block; }
.nav-core {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 22px;
    white-space: nowrap;
    flex-wrap: nowrap;
    flex: 1;
}
.nav-core a {
    color: #1D222B;
    font-weight: 700;
    position: relative;
    padding: 8px 6px;
    border-radius: 10px;
}
.nav-core a:hover,
.nav-core a.active { color: #D60000; }
.nav-core a.active::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -10px;
    width: 22px;
    height: 3px;
    border-radius: 999px;
    background: #D60000;
    transform: translateX(-50%);
}
.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: linear-gradient(135deg, #FF3030 0%, #D60000 52%, #980000 100%);
    color: #FFFFFF;
    border-radius: 999px;
    padding: 11px 22px;
    font-weight: 700;
    box-shadow: 0 12px 28px rgba(214, 0, 0, 0.20);
    transition: transform .2s ease, filter .2s ease;
    white-space: nowrap;
}
.main-btn:hover { transform: translateY(-1px); filter: brightness(.96); }
.header-register { flex: 0 0 auto; }
.channel-bar {
    background: #FFFFFF;
    border-bottom: 1px solid rgba(20,28,40,0.08);
    overflow-x: auto;
    white-space: nowrap;
}
.channel-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 8px 18px;
    display: flex;
    gap: 8px;
}
.channel-bar a {
    display: inline-flex;
    align-items: center;
    color: #5B6472;
    padding: 8px 13px;
    border-radius: 999px;
    font-size: 14px;
}
.channel-bar a:hover,
.channel-bar a.active {
    color: #D60000;
    background: rgba(214,0,0,0.08);
}
.mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    border: 1px solid rgba(20,28,40,0.08);
    background: #FFFFFF;
    border-radius: 12px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
}
.mobile-menu-btn span {
    width: 18px;
    height: 2px;
    border-radius: 2px;
    background: #1D222B;
}
.floating-service {
    position: fixed;
    right: 18px;
    top: 42%;
    z-index: 50;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.floating-service a {
    background: #FFFFFF;
    color: #1D222B;
    border: 1px solid rgba(20,28,40,0.08);
    box-shadow: 0 12px 30px rgba(24,32,46,0.08);
    border-radius: 999px;
    padding: 9px 12px;
    min-width: 50px;
    text-align: center;
    font-size: 13px;
    font-weight: 700;
}
.floating-service a:hover { color: #D60000; }
.floating-service a.register-link {
    background: linear-gradient(135deg, #FF3030 0%, #D60000 52%, #980000 100%);
    color: #FFFFFF;
}
.site-main { padding-bottom: 0; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.banner-slider {
    max-width: 1180px;
    height: 340px;
    margin: 24px auto 34px;
    border-radius: 24px;
    background: #EEF1F5;
    box-shadow: 0 16px 38px rgba(24,32,46,0.08);
    overflow: hidden;
    position: relative;
    min-height: 260px;
    max-height: 360px;
}
.banner-slider .slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity .45s ease;
}
.banner-slider .slide.active {
    opacity: 1;
    visibility: visible;
}
.banner-slider img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #EEF1F5;
}
.banner-caption,
.banner-text,
.slide-title,
.slide-desc,
.slide-content,
.slide-card,
.banner-card { display: none !important; }
.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 3;
    width: 42px;
    height: 42px;
    border: 1px solid rgba(20,28,40,0.12);
    border-radius: 999px;
    background: rgba(255,255,255,0.88);
    color: #D60000;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 10px 22px rgba(24,32,46,0.12);
}
.slider-arrow.prev { left: 16px; }
.slider-arrow.next { right: 16px; }
.slider-dots {
    position: absolute;
    left: 50%;
    bottom: 14px;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 3;
}
.slider-dots button {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    border: none;
    background: rgba(29,34,43,0.24);
    padding: 0;
    cursor: pointer;
}
.slider-dots button.active { background: #D60000; }
.section {
    max-width: 1180px;
    margin: 0 auto 34px;
    padding: 0 20px;
}
.section-panel {
    background: #FFFFFF;
    border: 1px solid rgba(20,28,40,0.08);
    border-radius: 24px;
    box-shadow: 0 16px 38px rgba(24,32,46,0.08);
    padding: 30px;
}
.section-soft {
    background: linear-gradient(135deg, #FFFFFF 0%, #EEF1F5 100%);
    border: 1px solid rgba(20,28,40,0.08);
    border-radius: 24px;
    padding: 30px;
}
.kicker, .badge, .num, .tag {
    color: #D60000;
    font-weight: 800;
}
h1, h2, h3, .section-title {
    color: #D60000;
    line-height: 1.28;
    margin: 0 0 16px;
}
h1 { font-size: clamp(30px, 4vw, 48px); }
h2 { font-size: clamp(24px, 3vw, 34px); }
h3 { font-size: 20px; }
p { margin: 0 0 14px; color: #5B6472; }
.lead { font-size: 17px; color: #1D222B; }
.title-line {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 18px;
}
.title-line::before {
    content: "";
    width: 34px;
    height: 4px;
    border-radius: 999px;
    background: #D60000;
}
.hero-intro {
    display: grid;
    grid-template-columns: 1.25fr .75fr;
    gap: 26px;
    align-items: center;
}
.entry-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0,1fr));
    gap: 12px;
    margin-top: 18px;
}
.entry-list a, .chip {
    background: #F4F5F7;
    color: #1D222B;
    border: 1px solid rgba(20,28,40,0.08);
    padding: 12px 14px;
    border-radius: 16px;
    font-weight: 700;
}
.entry-list a:hover, .chip:hover { color: #D60000; border-color: rgba(214,0,0,0.16); }
.news-strip {
    display: grid;
    grid-template-columns: repeat(4, minmax(0,1fr));
    gap: 0;
    overflow: hidden;
    border-radius: 22px;
    border: 1px solid rgba(214,0,0,0.16);
    background: #FFFFFF;
}
.news-strip .strip-item {
    padding: 20px;
    border-right: 1px solid rgba(20,28,40,0.08);
}
.news-strip .strip-item:last-child { border-right: none; }
.news-strip strong { display: block; color: #D60000; margin-bottom: 6px; }
.board-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0,1fr));
    gap: 18px;
}
.card,
.zone-card,
.info-card,
.review-card,
.product-card,
.faq-card {
    background: #FFFFFF;
    border: 1px solid rgba(20,28,40,0.08);
    box-shadow: 0 16px 38px rgba(24,32,46,0.08);
    border-radius: 20px;
    padding: 22px;
}
.card.alt { background: #EEF1F5; box-shadow: none; }
.topic-layout {
    display: grid;
    grid-template-columns: .95fr 1.05fr;
    gap: 28px;
    align-items: center;
}
.topic-layout.reverse {
    grid-template-columns: 1.05fr .95fr;
}
.topic-layout.reverse .topic-image { order: 2; }
.topic-image {
    background: #EEF1F5;
    border-radius: 22px;
    padding: 16px;
    min-height: 230px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.zone-card img,
.info-card img,
.content-img,
.topic-image img {
    max-width: 100%;
    height: auto;
    max-height: 230px;
    object-fit: contain;
}
.product-row {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(210px, 1fr);
    overflow-x: auto;
    gap: 16px;
    padding: 4px 4px 18px;
}
.product-card img {
    width: 100%;
    height: 160px;
    object-fit: contain;
    background: #EEF1F5;
    border-radius: 16px;
    margin-bottom: 14px;
}
.matrix-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0,1fr));
    gap: 18px;
}
.matrix-grid .product-card img { height: 142px; }
.app-section {
    display: grid;
    grid-template-columns: .9fr 1.1fr;
    gap: 26px;
    align-items: center;
}
.app-visual {
    background: #EEF1F5;
    border-radius: 24px;
    padding: 18px;
    display: flex;
    justify-content: center;
}
.app-visual img { max-height: 280px; object-fit: contain; }
.check-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0,1fr));
    gap: 10px 14px;
    padding: 0;
    margin: 18px 0;
    list-style: none;
}
.check-list li {
    padding-left: 18px;
    position: relative;
    color: #5B6472;
}
.check-list li::before {
    content: "";
    width: 7px;
    height: 7px;
    background: #D60000;
    border-radius: 50%;
    position: absolute;
    left: 0;
    top: .72em;
}
.notice-list {
    display: grid;
    gap: 12px;
}
.notice-list li {
    list-style: none;
    padding: 14px 16px;
    border-left: 4px solid #D60000;
    background: #F4F5F7;
    border-radius: 12px;
    color: #5B6472;
}
.review-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0,1fr));
    gap: 18px;
}
.review-card p { color: #1D222B; }
.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0,1fr));
    gap: 16px;
}
.faq-card strong { display: block; color: #1D222B; margin-bottom: 6px; }
.text-link {
    color: #D60000;
    font-weight: 800;
}
.page-hero {
    max-width: 1180px;
    margin: 28px auto 28px;
    padding: 0 20px;
}
.page-hero-inner {
    background: linear-gradient(135deg, #FFFFFF 0%, #EEF1F5 100%);
    border: 1px solid rgba(20,28,40,0.08);
    border-radius: 26px;
    padding: 38px;
    box-shadow: 0 16px 38px rgba(24,32,46,0.08);
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 24px;
    align-items: center;
}
.page-hero .content-img {
    background: #FFFFFF;
    border-radius: 22px;
    padding: 14px;
    max-height: 280px;
    margin: 0 auto;
}
.page-content {
    max-width: 1180px;
    margin: 0 auto 40px;
    padding: 0 20px;
}
.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px;
    margin-bottom: 22px;
}
.full-card { margin-bottom: 22px; }
.info-steps {
    display: grid;
    grid-template-columns: repeat(4, minmax(0,1fr));
    gap: 14px;
}
.info-steps .card { padding: 18px; }
.site-footer {
    background: #11151C;
    color: #E7ECF3;
    margin-top: 46px;
}
.site-footer p, .site-footer a, .site-footer span { color: #E7ECF3; }
.footer-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 42px 20px;
    display: grid;
    grid-template-columns: 1.5fr .7fr .7fr;
    gap: 30px;
}
.footer-logo img { max-height: 50px; width: auto; margin-bottom: 16px; }
.footer-note { color: #AEB7C4 !important; }
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links h3 { color: #FFFFFF; }
.footer-links a:hover { color: #FF5757; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.10);
    max-width: 1180px;
    margin: 0 auto;
    padding: 16px 20px 22px;
    display: flex;
    justify-content: space-between;
    gap: 16px;
    font-size: 14px;
}
.mobile-overlay {
    position: fixed;
    inset: 0;
    background: rgba(17,21,28,.42);
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: .25s ease;
}
.mobile-drawer {
    position: fixed;
    left: 0;
    top: 0;
    width: 84vw;
    max-width: 320px;
    height: 100vh;
    background: #FFFFFF;
    z-index: 10001;
    transform: translateX(-105%);
    transition: transform .28s ease;
    box-shadow: 0 20px 50px rgba(24,32,46,.20);
    overflow-y: auto;
}
.drawer-open { overflow: hidden; }
.drawer-open .mobile-overlay { opacity: 1; visibility: visible; }
.drawer-open .mobile-drawer { transform: translateX(0); }
.drawer-head {
    padding: 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(20,28,40,0.08);
}
.drawer-logo img { max-height: 46px; width: auto; }
.drawer-close {
    border: none;
    background: #F4F5F7;
    border-radius: 10px;
    width: 36px;
    height: 36px;
    font-size: 26px;
    color: #1D222B;
}
.drawer-nav {
    display: grid;
    gap: 4px;
    padding: 14px;
}
.drawer-nav a {
    padding: 12px 14px;
    border-radius: 12px;
    color: #1D222B;
    font-weight: 700;
}
.drawer-nav a.active,
.drawer-nav a:hover {
    color: #D60000;
    background: rgba(214,0,0,0.08);
}
.mobile-bottom-nav { display: none; }

@media (max-width: 1180px) {
    .floating-service { display: none; }
}
@media (max-width: 920px) {
    .header-inner { min-height: 66px; padding: 0 14px; gap: 12px; }
    .mobile-menu-btn { display: inline-flex; }
    .nav-core { display: none; }
    .logo img { max-height: 44px; }
    .header-register { padding: 9px 15px; }
    .channel-inner { padding: 8px 12px; }
    .site-main { padding-bottom: 70px; }
    .banner-slider {
        height: 205px;
        min-height: 150px;
        margin: 16px 12px 24px;
        border-radius: 18px;
    }
    .slider-arrow { width: 34px; height: 34px; font-size: 20px; }
    .section { margin-bottom: 24px; padding: 0 14px; }
    .section-panel, .section-soft { padding: 22px; border-radius: 20px; }
    .hero-intro, .topic-layout, .topic-layout.reverse, .app-section, .page-hero-inner, .content-grid {
        grid-template-columns: 1fr;
    }
    .topic-layout.reverse .topic-image { order: 0; }
    .news-strip, .board-grid, .matrix-grid, .review-grid, .faq-grid, .info-steps {
        grid-template-columns: 1fr;
    }
    .news-strip .strip-item { border-right: none; border-bottom: 1px solid rgba(20,28,40,0.08); }
    .news-strip .strip-item:last-child { border-bottom: none; }
    .topic-image { min-height: 170px; }
    .zone-card img, .info-card img, .content-img, .topic-image img { max-height: 190px; }
    .product-card img { height: 135px; }
    .matrix-grid .product-card img { height: 130px; }
    .app-visual img { max-height: 220px; }
    .check-list { grid-template-columns: 1fr; }
    .page-hero { margin-top: 18px; padding: 0 14px; }
    .page-hero-inner { padding: 24px; }
    .page-content { padding: 0 14px; }
    .footer-inner { grid-template-columns: 1fr; padding: 34px 18px; }
    .footer-bottom { flex-direction: column; padding-bottom: 86px; }
    .mobile-bottom-nav {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 9998;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        background: #FFFFFF;
        border-top: 1px solid rgba(20,28,40,0.10);
        box-shadow: 0 -8px 20px rgba(24,32,46,0.08);
    }
    .mobile-bottom-nav a {
        text-align: center;
        padding: 10px 4px 12px;
        color: #5B6472;
        font-size: 13px;
        font-weight: 800;
    }
    .mobile-bottom-nav a:hover { color: #D60000; }
}
@media (max-width: 560px) {
    h1 { font-size: 28px; }
    h2 { font-size: 23px; }
    .entry-list { grid-template-columns: 1fr; }
    .product-row { grid-auto-columns: minmax(185px, 78vw); }
    .banner-slider { height: 180px; }
    .page-hero-inner { padding: 20px; }
}