* {
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    margin: 0;
    background: #F3FBFF;
    color: #1F2D3A;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    line-height: 1.72;
    overflow-x: hidden;
}
a {
    color: inherit;
    text-decoration: none;
}
img {
    max-width: 100%;
    display: block;
}
button {
    font-family: inherit;
    cursor: pointer;
}
.site-header {
    position: sticky;
    top: 0;
    z-index: 9999;
    background: rgba(255,255,255,0.94);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 24px rgba(34,174,234,0.10);
}
.desktop-main-nav {
    max-width: 1200px;
    height: 72px;
    margin: 0 auto;
    padding: 0 18px;
    display: grid;
    grid-template-columns: 190px 1fr auto;
    align-items: center;
    gap: 22px;
}
.brand-logo img,
.mobile-logo img,
.drawer-head img,
.footer-brand img {
    object-fit: contain;
}
.brand-logo img {
    height: 48px;
    width: 168px;
}
.nav-core {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 28px;
    min-width: 0;
    white-space: nowrap;
}
.nav-core a {
    color: #147FB8;
    position: relative;
    font-weight: 600;
    font-size: 15px;
    padding: 8px 0;
}
.nav-core a:hover,
.nav-core a.active {
    color: #22AEEA;
}
.nav-core a.active::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -12px;
    width: 28px;
    height: 3px;
    border-radius: 999px;
    background: #22AEEA;
    transform: translateX(-50%);
}
.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 92px;
    height: 42px;
    padding: 0 22px;
    border-radius: 999px;
    color: #FFFFFF;
    background: linear-gradient(135deg, #6DE6FF 0%, #22AEEA 48%, #168DCC 100%);
    box-shadow: 0 12px 24px rgba(34,174,234,0.24);
    font-weight: 700;
    border: none;
    transition: transform .2s ease, box-shadow .2s ease;
}
.main-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 30px rgba(34,174,234,0.30);
}
.mini-btn {
    min-width: 70px;
    height: 36px;
    padding: 0 16px;
}
.channel-bar {
    background: rgba(247,252,255,0.92);
    border-top: 1px solid rgba(34,174,234,0.10);
    border-bottom: 1px solid rgba(34,174,234,0.10);
}
.channel-scroll {
    max-width: 1200px;
    margin: 0 auto;
    padding: 10px 18px;
    display: flex;
    gap: 10px;
    overflow-x: auto;
    scrollbar-width: none;
}
.channel-scroll::-webkit-scrollbar {
    display: none;
}
.channel-bar a {
    flex: 0 0 auto;
    color: #5C6F82;
    border-radius: 999px;
    padding: 6px 14px;
    font-size: 14px;
}
.channel-bar a:hover,
.channel-bar a.active {
    color: #22AEEA;
    background: rgba(34,174,234,0.10);
}
.mobile-topbar {
    display: none;
}
.menu-toggle,
.drawer-close {
    border: none;
    background: #EAF8FF;
    color: #22AEEA;
    border-radius: 12px;
    width: 40px;
    height: 40px;
    font-size: 22px;
}
.mobile-drawer {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 84%;
    max-width: 320px;
    background: linear-gradient(180deg, #FFFFFF 0%, #F3FBFF 100%);
    z-index: 10000;
    transform: translateX(-104%);
    transition: transform .28s ease;
    box-shadow: 18px 0 42px rgba(20,127,184,0.18);
    overflow-y: auto;
}
.mobile-drawer.open {
    transform: translateX(0);
}
.drawer-mask {
    position: fixed;
    inset: 0;
    background: rgba(11,61,92,0.38);
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: opacity .2s ease, visibility .2s ease;
}
.drawer-mask.show {
    opacity: 1;
    visibility: visible;
}
.drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px;
    border-bottom: 1px solid rgba(34,174,234,0.12);
}
.drawer-head img {
    width: 150px;
    height: 44px;
}
.drawer-nav {
    padding: 12px 16px 34px;
    display: grid;
    gap: 8px;
}
.drawer-nav a {
    padding: 12px 14px;
    border-radius: 14px;
    color: #1F2D3A;
    background: rgba(255,255,255,0.68);
    border: 1px solid rgba(34,174,234,0.10);
}
.drawer-nav a.active,
.drawer-nav a:hover {
    color: #22AEEA;
    background: #EAF8FF;
}
.no-scroll {
    overflow: hidden;
}
.floating-service {
    position: fixed;
    right: 18px;
    top: 42%;
    z-index: 60;
    display: grid;
    gap: 10px;
}
.floating-service a,
.floating-service button {
    width: 58px;
    min-height: 42px;
    border-radius: 16px;
    background: #FFFFFF;
    color: #22AEEA;
    border: 1px solid rgba(34,174,234,0.16);
    box-shadow: 0 14px 30px rgba(34,174,234,0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}
.floating-service a.register-link {
    background: linear-gradient(135deg, #6DE6FF 0%, #22AEEA 48%, #168DCC 100%);
    color: #FFFFFF;
}
.container,
.page-main,
.home-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 18px;
}
.home-main {
    padding-top: 24px;
}
.banner-slider {
    max-width: 1200px;
    height: 360px;
    margin: 0 auto 34px;
    border-radius: 22px;
    background: #FFFFFF;
    box-shadow: 0 14px 36px rgba(34,174,234,0.12);
    overflow: hidden;
    position: relative;
    z-index: 1;
}
.banner-slider .slide {
    display: none;
    width: 100%;
    height: 100%;
}
.banner-slider .slide.active {
    display: block;
}
.banner-slider img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #FFFFFF;
}
.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 3;
    border: none;
    border-radius: 999px;
    width: 42px;
    height: 42px;
    background: rgba(255,255,255,0.82);
    color: #22AEEA;
    border: 1px solid rgba(34,174,234,0.16);
    box-shadow: 0 10px 22px rgba(34,174,234,0.12);
    font-size: 26px;
}
.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(34,174,234,0.25);
    padding: 0;
}
.slider-dots button.active {
    background: #22AEEA;
}
section {
    margin-bottom: 34px;
}
h1,
h2,
h3,
.section-title {
    color: #22AEEA;
    line-height: 1.28;
    margin: 0 0 14px;
}
h1 {
    font-size: clamp(30px, 5vw, 48px);
}
h2 {
    font-size: clamp(24px, 3.4vw, 34px);
}
h3 {
    font-size: 20px;
}
p {
    margin: 0 0 14px;
}
.lead {
    font-size: 17px;
    color: #5C6F82;
}
.section-kicker,
.tag,
.label,
.num,
.badge {
    color: #22AEEA;
    font-weight: 800;
    letter-spacing: .04em;
}
.card,
.zone-card,
.info-card,
.review-card,
.notice-card,
.faq-item,
.inner-hero,
.summary-band,
.service-board,
.split-card,
.pill-card,
.about-brief {
    background: #FFFFFF;
    border: 1px solid rgba(34,174,234,0.16);
    box-shadow: 0 14px 36px rgba(34,174,234,0.12);
    border-radius: 22px;
}
.brand-service,
.inner-hero {
    display: grid;
    grid-template-columns: 1.15fr .85fr;
    gap: 28px;
    align-items: center;
    padding: 30px;
}
.tag-row,
.point-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin: 16px 0;
}
.tag-row span,
.point-row span,
.badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 7px 13px;
    background: #EAF8FF;
    border: 1px solid rgba(34,174,234,0.16);
    color: #147FB8;
    font-size: 14px;
}
.content-img,
.zone-card img,
.app-card img,
.hero-visual img,
.inner-hero img {
    width: 100%;
    max-height: 280px;
    object-fit: contain;
    border-radius: 18px;
    background: #F7FCFF;
}
.quick-pills,
.content-wall,
.review-grid,
.faq-grid,
.feature-grid,
.info-grid {
    display: grid;
    gap: 18px;
}
.quick-pills {
    grid-template-columns: repeat(4, 1fr);
}
.pill-card {
    padding: 18px;
    transition: transform .2s ease, border .2s ease;
}
.pill-card:hover {
    transform: translateY(-3px);
    border-color: rgba(34,174,234,0.42);
}
.pill-card strong {
    color: #1F2D3A;
    display: block;
    margin: 8px 0 4px;
}
.pill-card p {
    color: #5C6F82;
    font-size: 14px;
    margin: 0;
}
.summary-band {
    padding: 22px 26px;
    background: linear-gradient(135deg, rgba(234,248,255,0.95) 0%, rgba(255,255,255,0.96) 100%);
}
.service-board,
.info-grid {
    grid-template-columns: repeat(4, 1fr);
    display: grid;
    gap: 18px;
}
.info-card,
.service-board .card {
    padding: 22px;
}
.info-card p,
.service-board p,
.zone-card p,
.split-card p,
.faq-item p,
.review-card p {
    color: #5C6F82;
}
.dual-grid,
.horizontal-zone,
.support-grid,
.content-two {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
}
.split-card,
.zone-card,
.app-card,
.notice-card,
.about-brief {
    padding: 24px;
}
.split-card img,
.zone-card img,
.app-card img {
    margin-bottom: 16px;
}
.text-link {
    color: #22AEEA;
    font-weight: 700;
}
.service-list {
    padding: 0;
    margin: 14px 0 0;
    list-style: none;
    display: grid;
    gap: 8px;
}
.service-list li {
    padding-left: 18px;
    position: relative;
    color: #5C6F82;
}
.service-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: .72em;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #22AEEA;
}
.content-wall {
    grid-template-columns: repeat(3, 1fr);
}
.review-grid {
    grid-template-columns: repeat(3, 1fr);
}
.review-card {
    padding: 22px;
}
.review-card small {
    color: #8BA1B5;
}
.faq-grid {
    grid-template-columns: repeat(2, 1fr);
}
.faq-item {
    padding: 22px;
}
.notice-card {
    background: linear-gradient(135deg, #FFFFFF 0%, #EAF8FF 100%);
}
.page-main {
    padding-top: 30px;
    padding-bottom: 40px;
}
.inner-hero {
    margin-top: 24px;
}
.inner-section {
    padding: 26px;
}
.feature-grid {
    grid-template-columns: repeat(3, 1fr);
}
.feature-grid .card {
    padding: 22px;
}
.page-meta-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    padding: 0;
    list-style: none;
}
.page-meta-list li {
    background: #F7FCFF;
    border: 1px solid rgba(34,174,234,0.12);
    padding: 14px;
    border-radius: 16px;
    color: #5C6F82;
}
.site-footer {
    background: #0B3D5C;
    color: #EAF8FF;
    margin-top: 30px;
}
.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 42px 18px;
    display: grid;
    grid-template-columns: 1.4fr .7fr .7fr 1fr;
    gap: 28px;
}
.footer-brand img {
    width: 164px;
    height: 48px;
    background: rgba(255,255,255,0.92);
    border-radius: 12px;
    padding: 4px 8px;
    margin-bottom: 14px;
}
.footer-links {
    display: grid;
    align-content: start;
    gap: 8px;
}
.footer-links h3,
.footer-note h3 {
    color: #FFFFFF;
}
.footer-links a {
    color: #EAF8FF;
    opacity: .86;
}
.footer-bottom {
    border-top: 1px solid rgba(234,248,255,0.16);
    text-align: center;
    padding: 16px;
    color: rgba(234,248,255,0.78);
}
.mobile-bottom-nav {
    display: none;
}
@media (max-width: 1120px) {
    .nav-core {
        gap: 18px;
    }
    .floating-service {
        display: none;
    }
}
@media (max-width: 900px) {
    .desktop-main-nav,
    .channel-bar {
        display: none;
    }
    .mobile-topbar {
        height: 64px;
        padding: 0 14px;
        display: grid;
        grid-template-columns: 44px 1fr auto;
        align-items: center;
        gap: 12px;
    }
    .mobile-logo {
        justify-self: center;
    }
    .mobile-logo img {
        width: 150px;
        height: 44px;
    }
    body {
        padding-bottom: 74px;
    }
    .home-main {
        padding-top: 16px;
    }
    .banner-slider {
        height: 220px;
        border-radius: 18px;
        margin-bottom: 24px;
    }
    .slider-arrow {
        width: 34px;
        height: 34px;
        font-size: 22px;
    }
    .slider-prev {
        left: 10px;
    }
    .slider-next {
        right: 10px;
    }
    .brand-service,
    .inner-hero,
    .dual-grid,
    .horizontal-zone,
    .support-grid,
    .content-two {
        grid-template-columns: 1fr;
    }
    .quick-pills {
        display: flex;
        overflow-x: auto;
        padding-bottom: 4px;
        scrollbar-width: none;
    }
    .quick-pills::-webkit-scrollbar {
        display: none;
    }
    .pill-card {
        min-width: 210px;
    }
    .service-board,
    .content-wall,
    .review-grid,
    .faq-grid,
    .feature-grid,
    .info-grid,
    .page-meta-list,
    .footer-inner {
        grid-template-columns: 1fr;
    }
    .content-img,
    .zone-card img,
    .app-card img,
    .inner-hero img {
        max-height: 240px;
    }
    .mobile-bottom-nav {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 9997;
        height: 64px;
        background: #FFFFFF;
        border-top: 1px solid rgba(34,174,234,0.16);
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        box-shadow: 0 -10px 24px rgba(34,174,234,0.12);
    }
    .mobile-bottom-nav a {
        display: flex;
        align-items: center;
        justify-content: center;
        flex-direction: column;
        gap: 2px;
        font-size: 12px;
        color: #5C6F82;
        font-weight: 700;
    }
    .mobile-bottom-nav a span {
        font-size: 18px;
        line-height: 1;
    }
    .mobile-bottom-nav a.active {
        color: #22AEEA;
    }
}
@media (max-width: 520px) {
    .home-main,
    .page-main,
    .container {
        padding-left: 14px;
        padding-right: 14px;
    }
    .banner-slider {
        height: 190px;
        border-radius: 16px;
    }
    .brand-service,
    .inner-hero,
    .split-card,
    .zone-card,
    .app-card,
    .notice-card,
    .about-brief,
    .inner-section,
    .faq-item,
    .review-card,
    .info-card {
        padding: 18px;
        border-radius: 18px;
    }
    .mini-btn {
        min-width: 64px;
        padding: 0 12px;
    }
    .mobile-logo img {
        width: 132px;
    }
}