* {
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    margin: 0;
    background: #E6EBF2;
    color: #243447;
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
    padding-top: 96px;
}
a {
    color: inherit;
    text-decoration: none;
}
img {
    max-width: 100%;
    display: block;
}
.site-header {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(245,247,251,0.94);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 24px rgba(56,92,138,0.10);
}
.header-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 76px;
}
.logo img {
    max-height: 52px;
    width: auto;
}
.nav-core {
    display: flex;
    justify-content: center;
    gap: 24px;
    white-space: nowrap;
    flex-wrap: nowrap;
    flex: 1;
}
.nav-core a {
    color: #4E5F7A;
    position: relative;
    font-weight: 600;
    padding: 8px 12px;
    border-radius: 999px;
    transition: 0.2s ease;
}
.nav-core a:hover,
.nav-core a.active {
    color: #289CFF;
    background: rgba(40,156,255,0.08);
}
.nav-core a.active::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -12px;
    width: 28px;
    height: 3px;
    border-radius: 999px;
    background: #289CFF;
    transform: translateX(-50%);
}
.main-btn,
.top-register {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 26px;
    background: linear-gradient(180deg, #32D1F6 0%, #27B9F4 35%, #249BFF 100%);
    color: #FFFFFF;
    border-radius: 999px;
    font-weight: 700;
    box-shadow: 0 12px 22px rgba(36,155,255,0.24);
}
.top-register {
    flex: 0 0 auto;
}
.mobile-menu-btn {
    display: none;
    width: 42px;
    height: 42px;
    border: none;
    background: #FFFFFF;
    border-radius: 13px;
    box-shadow: 0 8px 18px rgba(56,92,138,0.12);
    padding: 10px;
}
.mobile-menu-btn span {
    display: block;
    height: 2px;
    margin: 5px 0;
    background: #289CFF;
    border-radius: 99px;
}
.site-main {
    width: 100%;
}
.layout-shell {
    max-width: 1420px;
    margin: 0 auto;
    padding: 0 76px 42px 24px;
    display: grid;
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 28px;
}
.content-area {
    min-width: 0;
}
.side-channel {
    position: sticky;
    top: 110px;
    align-self: start;
    background: rgba(255,255,255,0.92);
    border: 1px solid rgba(40,156,255,0.14);
    border-radius: 18px;
    box-shadow: 0 14px 32px rgba(56,92,138,0.10);
    padding: 12px;
}
.side-channel a {
    display: block;
    color: #66788A;
    border-radius: 12px;
    padding: 10px 12px;
    font-size: 14px;
    transition: 0.2s ease;
}
.side-channel a:hover,
.side-channel a.active {
    color: #289CFF;
    background: rgba(40,156,255,0.10);
}
.floating-service {
    position: fixed;
    right: 18px;
    top: 42%;
    z-index: 60;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.floating-service a,
.floating-service button {
    width: 58px;
    min-height: 44px;
    border-radius: 15px;
    border: 1px solid rgba(40,156,255,0.16);
    background: #FFFFFF;
    color: #289CFF;
    box-shadow: 0 14px 30px rgba(56,92,138,0.12);
    font-weight: 700;
    cursor: pointer;
    font-family: inherit;
}
.floating-service a {
    display: flex;
    align-items: center;
    justify-content: center;
}
.floating-service a.register-link {
    background: linear-gradient(180deg, #32D1F6 0%, #27B9F4 35%, #249BFF 100%);
    color: #FFFFFF;
}
.mobile-drawer {
    position: fixed;
    left: 0;
    top: 0;
    width: 84vw;
    max-width: 320px;
    height: 100vh;
    background: #FFFFFF;
    z-index: 10000;
    transform: translateX(-105%);
    transition: transform 0.25s ease;
    box-shadow: 24px 0 40px rgba(36,52,71,0.18);
    overflow-y: auto;
}
.mobile-drawer.show {
    transform: translateX(0);
}
.drawer-mask {
    position: fixed;
    inset: 0;
    background: rgba(36,52,71,0.42);
    z-index: 9999;
    display: none;
}
.drawer-mask.show {
    display: block;
}
.drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 18px 12px;
    border-bottom: 1px solid rgba(40,156,255,0.12);
}
.drawer-logo img {
    max-height: 46px;
}
.drawer-close {
    width: 38px;
    height: 38px;
    border: none;
    border-radius: 12px;
    background: #EEF2F7;
    color: #289CFF;
    font-size: 26px;
    line-height: 1;
}
.drawer-nav {
    padding: 14px;
}
.drawer-nav a {
    display: block;
    padding: 12px 14px;
    border-radius: 12px;
    color: #4E5F7A;
    font-weight: 600;
}
.drawer-nav a.active,
.drawer-nav a:hover {
    color: #289CFF;
    background: rgba(40,156,255,0.10);
}
.drawer-open {
    overflow: hidden;
}
.mobile-bottom-nav {
    display: none;
}
.banner-slider {
    max-width: 1200px;
    height: 360px;
    margin: 28px auto 36px;
    border-radius: 22px;
    background: #FFFFFF;
    box-shadow: 0 18px 40px rgba(56,92,138,0.12);
    overflow: hidden;
    position: relative;
    z-index: 1;
}
.banner-slider .slide {
    display: none;
    height: 100%;
}
.banner-slider .slide.active {
    display: block;
}
.banner-slider img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #FFFFFF;
}
.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: none;
    border-radius: 999px;
    background: rgba(255,255,255,0.86);
    color: #289CFF;
    box-shadow: 0 8px 20px rgba(56,92,138,0.16);
    font-size: 28px;
    cursor: pointer;
}
.slider-prev {
    left: 18px;
}
.slider-next {
    right: 18px;
}
.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(40,156,255,0.24);
    padding: 0;
    cursor: pointer;
}
.slider-dots button.active {
    background: #289CFF;
}
.section,
.hero-intro,
.notice-band {
    margin-bottom: 30px;
}
.card,
.zone-card,
.info-card,
.review-card,
.faq-item,
.hero-intro,
.notice-band,
.page-hero,
.text-panel,
.image-panel,
.table-card {
    background: rgba(255,255,255,0.92);
    border: 1px solid rgba(40,156,255,0.16);
    box-shadow: 0 14px 36px rgba(56,92,138,0.10);
    border-radius: 22px;
}
.hero-intro,
.page-hero,
.text-panel,
.notice-band {
    padding: 28px;
}
.hero-grid,
.two-col,
.app-split,
.media-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
    gap: 24px;
    align-items: center;
}
h1,
h2,
h3,
.section-title {
    color: #289CFF;
    line-height: 1.35;
    margin-top: 0;
}
h1 {
    font-size: clamp(28px, 4vw, 46px);
}
h2 {
    font-size: clamp(22px, 3vw, 30px);
}
p {
    color: #4E5F7A;
}
.lead {
    font-size: 18px;
    color: #243447;
}
.muted {
    color: #66788A;
}
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}
.quick-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 14px;
}
.product-grid,
.review-grid,
.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}
.card,
.zone-card,
.info-card,
.review-card,
.faq-item,
.table-card {
    padding: 22px;
}
.card a,
.info-card a,
.zone-card a,
.text-link {
    color: #289CFF;
    font-weight: 700;
}
.content-img,
.zone-card img,
.app-section img,
.banner-slider img,
.image-panel img {
    max-width: 100%;
    height: auto;
    object-fit: contain;
}
.image-panel {
    padding: 16px;
    background: #FFFFFF;
}
.image-panel img {
    width: 100%;
    max-height: 300px;
    margin: 0 auto;
}
.zone-card img {
    width: 100%;
    height: 160px;
    object-fit: contain;
    background: #F5F7FB;
    border-radius: 16px;
    margin-bottom: 14px;
}
.app-section img {
    width: 100%;
    max-height: 280px;
    object-fit: contain;
    background: #F5F7FB;
    border-radius: 18px;
}
.notice-band {
    background: linear-gradient(180deg, #FFFFFF 0%, #F5F7FB 100%);
}
.inline-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 18px;
}
.light-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 22px;
    border-radius: 999px;
    border: 1px solid rgba(40,156,255,0.22);
    color: #289CFF;
    background: #FFFFFF;
    font-weight: 700;
}
.kv-list {
    display: grid;
    gap: 12px;
}
.kv-list div {
    padding: 14px 16px;
    border-radius: 15px;
    background: #F5F7FB;
    color: #4E5F7A;
}
.site-footer {
    background: #243447;
    color: #EAF3FF;
    padding: 44px 20px 26px;
}
.footer-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1fr;
    gap: 28px;
}
.footer-logo img {
    max-height: 52px;
    background: #FFFFFF;
    border-radius: 14px;
    padding: 6px;
}
.site-footer h3 {
    color: #EAF3FF;
    margin-bottom: 12px;
}
.site-footer p,
.site-footer a {
    color: #EAF3FF;
}
.site-footer a {
    display: block;
    margin: 7px 0;
}
.footer-bottom {
    max-width: 1200px;
    margin: 24px auto 0;
    padding-top: 18px;
    border-top: 1px solid rgba(234,243,255,0.18);
    color: rgba(234,243,255,0.72);
    text-align: center;
}
@media (max-width: 1180px) {
    .layout-shell {
        grid-template-columns: 1fr;
        padding: 0 18px 42px;
    }
    .side-channel,
    .floating-service {
        display: none;
    }
    .quick-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}
@media (max-width: 860px) {
    body {
        padding-top: 76px;
        padding-bottom: 74px;
    }
    .header-inner {
        min-height: 68px;
        padding: 0 14px;
        gap: 10px;
    }
    .mobile-menu-btn {
        display: block;
    }
    .nav-core {
        display: none;
    }
    .logo {
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
    }
    .logo img {
        max-height: 44px;
    }
    .top-register {
        min-height: 38px;
        padding: 0 16px;
        margin-left: auto;
    }
    .mobile-bottom-nav {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 900;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        background: rgba(255,255,255,0.96);
        box-shadow: 0 -8px 22px rgba(56,92,138,0.12);
        padding: 8px 8px calc(8px + env(safe-area-inset-bottom));
    }
    .mobile-bottom-nav a {
        text-align: center;
        padding: 8px 4px;
        border-radius: 12px;
        color: #66788A;
        font-weight: 700;
        font-size: 13px;
    }
    .mobile-bottom-nav a.active {
        background: rgba(40,156,255,0.10);
        color: #289CFF;
    }
    .banner-slider {
        height: 210px;
        margin: 18px auto 24px;
        border-radius: 18px;
    }
    .slider-arrow {
        width: 34px;
        height: 34px;
        font-size: 22px;
    }
    .hero-grid,
    .two-col,
    .app-split,
    .media-grid {
        grid-template-columns: 1fr;
    }
    .card-grid,
    .product-grid,
    .review-grid,
    .faq-grid,
    .quick-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .hero-intro,
    .page-hero,
    .text-panel,
    .notice-band,
    .card,
    .zone-card,
    .info-card,
    .review-card,
    .faq-item,
    .table-card {
        padding: 20px;
        border-radius: 18px;
    }
}
@media (max-width: 480px) {
    .banner-slider {
        height: 180px;
    }
    .layout-shell {
        padding-left: 12px;
        padding-right: 12px;
    }
    .inline-actions {
        flex-direction: column;
    }
    .main-btn,
    .light-btn {
        width: 100%;
    }
}