* {
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    margin: 0;
    background: #F4F5F7;
    color: #1D222B;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.78;
}
a {
    color: inherit;
    text-decoration: none;
}
img {
    max-width: 100%;
    display: block;
}
main {
    padding-top: 124px;
}
.site-header {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    z-index: 100;
    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;
    min-height: 72px;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.logo img,
.drawer-logo img,
.footer-logo img {
    max-height: 52px;
    width: auto;
}
.nav-core {
    display: flex;
    align-items: center;
    gap: 22px;
    white-space: nowrap;
    flex-wrap: nowrap;
}
.nav-core a {
    color: #1D222B;
    font-weight: 650;
    position: relative;
    padding: 8px 4px;
    border-radius: 999px;
}
.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%);
}
.register-btn,
.main-btn,
.small-red-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 0;
    cursor: pointer;
    background: linear-gradient(135deg, #FF3030 0%, #D60000 52%, #980000 100%);
    color: #FFFFFF;
    border-radius: 999px;
    font-weight: 700;
    box-shadow: 0 14px 24px rgba(214, 0, 0, 0.18);
}
.register-btn {
    padding: 10px 22px;
    white-space: nowrap;
}
.main-btn {
    padding: 12px 24px;
}
.small-red-btn {
    padding: 8px 16px;
    font-size: 14px;
}
.channel-bar {
    background: #FFFFFF;
    border-top: 1px solid rgba(20,28,40,0.04);
    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 20px;
    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);
}
.menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border: 1px solid rgba(20,28,40,0.08);
    background: #FFFFFF;
    border-radius: 14px;
    padding: 9px;
}
.menu-toggle span {
    display: block;
    height: 2px;
    margin: 5px 0;
    background: #1D222B;
    border-radius: 999px;
}
.drawer-mask {
    position: fixed;
    inset: 0;
    z-index: 130;
    background: rgba(17,21,28,0.42);
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s ease;
}
.mobile-drawer {
    position: fixed;
    left: 0;
    top: 0;
    z-index: 140;
    width: 84vw;
    max-width: 320px;
    height: 100vh;
    background: #FFFFFF;
    transform: translateX(-105%);
    transition: transform .25s ease;
    box-shadow: 18px 0 42px rgba(17,21,28,0.16);
    overflow-y: auto;
}
.drawer-open {
    overflow: hidden;
}
.drawer-open .drawer-mask {
    opacity: 1;
    pointer-events: auto;
}
.drawer-open .mobile-drawer {
    transform: translateX(0);
}
.drawer-head {
    height: 76px;
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(20,28,40,0.08);
}
.drawer-close {
    width: 38px;
    height: 38px;
    border: 0;
    border-radius: 12px;
    background: #EEF1F5;
    color: #1D222B;
    font-size: 24px;
}
.drawer-nav {
    padding: 14px;
    display: grid;
    gap: 8px;
}
.drawer-nav a {
    padding: 11px 13px;
    border-radius: 14px;
    color: #1D222B;
    background: #F4F5F7;
    font-weight: 650;
}
.drawer-nav a.active {
    color: #D60000;
    background: rgba(214,0,0,0.08);
}
.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;
    font-weight: 650;
    text-align: center;
    font-size: 14px;
}
.floating-service a.register-link {
    background: linear-gradient(135deg, #FF3030 0%, #D60000 52%, #980000 100%);
    color: #FFFFFF;
}
.container,
.section {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
}
.section {
    margin-top: 30px;
}
.hero-panel,
.card,
.zone-card,
.info-card,
.review-card,
.faq-card,
.notice-strip,
.page-hero,
.support-panel,
.product-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;
}
.banner-slider {
    max-width: 1180px;
    height: clamp(260px, 29vw, 360px);
    margin: 24px auto 34px;
    border-radius: 24px;
    background: #EEF1F5;
    box-shadow: 0 16px 38px rgba(24,32,46,0.08);
    overflow: hidden;
    position: relative;
}
.banner-slider .slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    pointer-events: none;
    transition: opacity .35s ease;
}
.banner-slider .slide.active {
    opacity: 1;
    pointer-events: auto;
}
.banner-slider img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #EEF1F5;
}
.slider-prev,
.slider-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 4;
    width: 38px;
    height: 38px;
    border: 1px solid rgba(20,28,40,0.12);
    border-radius: 999px;
    background: rgba(255,255,255,0.82);
    color: #1D222B;
    font-size: 26px;
    cursor: pointer;
}
.slider-prev {
    left: 14px;
}
.slider-next {
    right: 14px;
}
.slider-dots {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 14px;
    z-index: 5;
    display: flex;
    justify-content: center;
    gap: 9px;
}
.slider-dot {
    width: 9px;
    height: 9px;
    border-radius: 999px;
    border: 0;
    padding: 0;
    background: rgba(29,34,43,0.28);
    cursor: pointer;
}
.slider-dot.active {
    width: 24px;
    background: #D60000;
}
.banner-caption,
.banner-text,
.slide-title,
.slide-desc,
.slide-content,
.slide-card,
.banner-card {
    display: none !important;
}
.hero-panel {
    padding: 28px;
    display: grid;
    grid-template-columns: 1.3fr .7fr;
    gap: 22px;
    align-items: center;
    overflow: hidden;
}
.kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #D60000;
    font-weight: 750;
    letter-spacing: .04em;
}
.kicker::before {
    content: "";
    width: 28px;
    height: 3px;
    border-radius: 999px;
    background: #D60000;
}
h1,
h2,
h3,
.section-title {
    color: #D60000;
    line-height: 1.28;
}
h1 {
    margin: 10px 0 14px;
    font-size: clamp(30px, 4vw, 48px);
}
h2,
.section-title {
    margin: 0 0 14px;
    font-size: clamp(23px, 2.5vw, 32px);
}
h3 {
    margin: 0 0 10px;
    font-size: 20px;
}
p {
    margin: 0 0 14px;
    color: #5B6472;
}
.hero-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 18px;
}
.link-pill {
    display: inline-flex;
    padding: 10px 16px;
    border: 1px solid rgba(214, 0, 0, 0.16);
    border-radius: 999px;
    color: #D60000;
    background: rgba(214,0,0,0.05);
    font-weight: 700;
}
.stat-stack {
    display: grid;
    gap: 12px;
}
.stat-item {
    padding: 18px;
    border-radius: 18px;
    background: #EEF1F5;
    border-left: 4px solid #D60000;
}
.stat-item strong {
    display: block;
    color: #1D222B;
    font-size: 21px;
}
.notice-strip {
    padding: 14px 18px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    background: linear-gradient(90deg, #FFFFFF, #EEF1F5);
}
.notice-strip div {
    padding: 12px 14px;
    border-radius: 16px;
    border: 1px solid rgba(20,28,40,0.08);
    background: rgba(255,255,255,0.72);
}
.notice-strip b {
    display: block;
    color: #D60000;
    margin-bottom: 4px;
}
.grid-3,
.grid-4,
.grid-2 {
    display: grid;
    gap: 18px;
}
.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}
.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}
.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}
.card,
.info-card,
.review-card,
.faq-card,
.support-panel {
    padding: 22px;
}
.card b,
.info-card b {
    color: #1D222B;
}
.topic-row {
    display: grid;
    grid-template-columns: .9fr 1.1fr;
    gap: 22px;
    align-items: center;
    background: #FFFFFF;
    border: 1px solid rgba(20,28,40,0.08);
    box-shadow: 0 16px 38px rgba(24,32,46,0.08);
    border-radius: 24px;
    padding: 18px;
}
.topic-row.reverse {
    grid-template-columns: 1.1fr .9fr;
}
.topic-media {
    min-height: 230px;
    border-radius: 20px;
    background: #EEF1F5;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.topic-media img,
.zone-card img,
.info-card img,
.content-img {
    max-width: 100%;
    height: auto;
    max-height: 260px;
    object-fit: contain;
}
.topic-text {
    padding: 8px 10px;
}
.horizontal-scroll {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(210px, 1fr);
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 4px;
}
.product-card {
    overflow: hidden;
}
.product-card img {
    width: 100%;
    height: 150px;
    object-fit: contain;
    background: #EEF1F5;
    padding: 10px;
}
.product-card div {
    padding: 16px;
}
.matrix-card {
    background: #FFFFFF;
    border: 1px solid rgba(20,28,40,0.08);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 16px 38px rgba(24,32,46,0.08);
}
.matrix-card img {
    width: 100%;
    height: 140px;
    object-fit: contain;
    background: #EEF1F5;
    padding: 10px;
}
.matrix-card div {
    padding: 15px;
}
.check-list {
    list-style: none;
    margin: 12px 0 0;
    padding: 0;
    display: grid;
    gap: 8px;
}
.check-list li {
    color: #5B6472;
    padding-left: 22px;
    position: relative;
}
.check-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: .72em;
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: #D60000;
}
.page-hero {
    width: min(1180px, calc(100% - 40px));
    margin: 28px auto 0;
    padding: 28px;
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: 24px;
    align-items: center;
}
.page-hero .hero-media {
    border-radius: 20px;
    background: #EEF1F5;
    min-height: 240px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.page-hero .hero-media img {
    max-height: 285px;
    width: 100%;
    object-fit: contain;
    padding: 10px;
}
.content-block {
    width: min(1180px, calc(100% - 40px));
    margin: 24px auto 0;
}
.content-block .block-head {
    margin-bottom: 14px;
}
.block-card {
    padding: 22px;
    background: #FFFFFF;
    border: 1px solid rgba(20,28,40,0.08);
    border-radius: 22px;
    box-shadow: 0 16px 38px rgba(24,32,46,0.08);
}
.block-card + .block-card {
    margin-top: 16px;
}
.page-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}
.page-grid .block-card {
    margin: 0;
}
.review-card {
    border-left: 4px solid rgba(214,0,0,0.58);
}
.review-name {
    color: #1D222B;
    font-weight: 750;
    margin-bottom: 6px;
}
.faq-card details {
    border-bottom: 1px solid rgba(20,28,40,0.08);
    padding: 12px 0;
}
.faq-card details:last-child {
    border-bottom: 0;
}
.faq-card summary {
    cursor: pointer;
    font-weight: 750;
    color: #1D222B;
}
.faq-card p {
    margin-top: 10px;
}
.legal-note {
    background: #11151C;
    color: #E7ECF3;
    border-radius: 24px;
    padding: 24px;
}
.legal-note p,
.legal-note li {
    color: #E7ECF3;
}
.legal-note h2 {
    color: #FFFFFF;
}
.site-footer {
    margin-top: 44px;
    background: #11151C;
    color: #E7ECF3;
    padding: 46px 20px 24px;
}
.footer-grid {
    max-width: 1180px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.4fr .75fr .75fr 1fr;
    gap: 28px;
}
.site-footer h3 {
    color: #FFFFFF;
}
.site-footer p,
.site-footer a {
    color: #C9D2DF;
}
.site-footer a {
    display: block;
    margin: 7px 0;
}
.footer-bottom {
    max-width: 1180px;
    margin: 26px auto 0;
    padding-top: 18px;
    border-top: 1px solid rgba(231,236,243,0.14);
    color: #AEB8C7;
    font-size: 14px;
}
.mobile-bottom-nav {
    display: none;
}
@media (max-width: 980px) {
    main {
        padding-top: 118px;
    }
    .nav-core {
        display: none;
    }
    .menu-toggle {
        display: block;
        flex: 0 0 auto;
    }
    .header-inner {
        min-height: 68px;
        gap: 12px;
    }
    .logo {
        margin: 0 auto;
    }
    .logo img {
        max-height: 46px;
    }
    .register-btn {
        padding: 9px 17px;
    }
    .floating-service {
        display: none;
    }
    .hero-panel,
    .page-hero,
    .topic-row,
    .topic-row.reverse {
        grid-template-columns: 1fr;
    }
    .notice-strip {
        grid-template-columns: repeat(2, 1fr);
    }
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    .grid-3 {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}
@media (max-width: 680px) {
    body {
        padding-bottom: 72px;
    }
    main {
        padding-top: 114px;
    }
    .container,
    .section,
    .page-hero,
    .content-block {
        width: min(100% - 28px, 1180px);
    }
    .header-inner {
        padding: 0 12px;
    }
    .channel-inner {
        padding: 7px 12px;
    }
    .banner-slider {
        width: calc(100% - 28px);
        height: 185px;
        margin-top: 14px;
        margin-bottom: 22px;
        border-radius: 18px;
    }
    .slider-prev,
    .slider-next {
        width: 32px;
        height: 32px;
        font-size: 22px;
    }
    .hero-panel,
    .page-hero,
    .block-card,
    .card,
    .info-card,
    .review-card,
    .faq-card,
    .support-panel {
        padding: 18px;
        border-radius: 18px;
    }
    h1 {
        font-size: 28px;
    }
    h2,
    .section-title {
        font-size: 23px;
    }
    .notice-strip,
    .grid-2,
    .grid-4,
    .page-grid {
        grid-template-columns: 1fr;
    }
    .topic-media,
    .page-hero .hero-media {
        min-height: 180px;
    }
    .topic-media img,
    .page-hero .hero-media img,
    .content-img {
        max-height: 210px;
    }
    .product-card img,
    .matrix-card img {
        height: 128px;
    }
    .mobile-bottom-nav {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 105;
        background: #FFFFFF;
        border-top: 1px solid rgba(20,28,40,0.08);
        box-shadow: 0 -10px 28px rgba(17,21,28,0.08);
    }
    .mobile-bottom-nav a {
        padding: 9px 4px 10px;
        text-align: center;
        font-size: 13px;
        color: #5B6472;
        font-weight: 650;
    }
    .mobile-bottom-nav a.active {
        color: #D60000;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
}