* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(circle at 14% 8%, rgba(0, 230, 246, 0.14), transparent 28%),
        radial-gradient(circle at 86% 16%, rgba(0, 119, 255, 0.12), transparent 30%),
        linear-gradient(180deg, #071B24 0%, #06131B 100%);
    color: #EAFBFF;
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    line-height: 1.75;
    padding-top: 112px;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 80;
    background: rgba(4,16,23,0.92);
    backdrop-filter: blur(12px);
    box-shadow: 0 8px 26px rgba(0,230,246,0.10);
    border-bottom: 1px solid rgba(0,230,246,0.10);
}

.top-nav {
    max-width: 1220px;
    margin: 0 auto;
    height: 70px;
    padding: 0 20px;
    display: flex;
    align-items: center;
    gap: 22px;
}

.brand-logo,
.drawer-logo,
.footer-logo {
    display: inline-flex;
    align-items: center;
    flex: 0 0 auto;
}

.brand-logo img {
    width: 150px;
    max-height: 48px;
    object-fit: contain;
}

.nav-core {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    min-width: 0;
}

.nav-core a {
    color: #B7EFFF;
    position: relative;
    font-weight: 600;
    padding: 9px 14px;
    border-radius: 999px;
    white-space: nowrap;
}

.nav-core a:hover,
.nav-core a.active {
    color: #00E6F6;
    background: rgba(0,230,246,0.08);
}

.nav-core a.active::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -12px;
    width: 28px;
    height: 3px;
    border-radius: 999px;
    background: linear-gradient(90deg, #00E6F6, #00B9FF);
    transform: translateX(-50%);
}

.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 10px 22px;
    background: linear-gradient(135deg, #00E6F6 0%, #00B9FF 48%, #0077FF 100%);
    color: #041017;
    border-radius: 999px;
    box-shadow: 0 12px 26px rgba(0,230,246,0.22);
    font-weight: 700;
    border: 0;
    cursor: pointer;
    transition: transform .2s ease, box-shadow .2s ease;
}

.main-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 34px rgba(0,230,246,0.34);
}

.header-register {
    flex: 0 0 auto;
}

.menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border: 1px solid rgba(0,230,246,0.18);
    border-radius: 12px;
    background: rgba(10,38,50,0.86);
    padding: 9px;
}

.menu-toggle span {
    display: block;
    height: 2px;
    margin: 5px 0;
    background: #00E6F6;
    border-radius: 999px;
}

.channel-bar {
    background: rgba(10,38,50,0.86);
    border-top: 1px solid rgba(0,230,246,0.10);
    border-bottom: 1px solid rgba(0,230,246,0.10);
    overflow-x: auto;
    white-space: nowrap;
}

.channel-inner {
    max-width: 1220px;
    margin: 0 auto;
    display: flex;
    gap: 8px;
    padding: 10px 20px;
}

.channel-bar a {
    color: #A8C8D6;
    border-radius: 999px;
    padding: 6px 13px;
    font-size: 14px;
    border: 1px solid rgba(0,230,246,0.08);
    background: rgba(4,16,23,0.26);
}

.channel-bar a:hover,
.channel-bar a.active {
    color: #00E6F6;
    background: rgba(0,230,246,0.10);
    border-color: rgba(0,230,246,0.26);
}

.floating-service {
    position: fixed;
    right: 18px;
    top: 42%;
    z-index: 60;
    width: 104px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.floating-service a,
.floating-service button {
    width: 100%;
    padding: 10px 8px;
    text-align: center;
    border-radius: 15px;
    background: rgba(10,38,50,0.92);
    color: #00E6F6;
    border: 1px solid rgba(0,230,246,0.16);
    box-shadow: 0 14px 30px rgba(0,230,246,0.10);
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
}

.floating-service a.register-link {
    background: linear-gradient(135deg, #00E6F6 0%, #00B9FF 48%, #0077FF 100%);
    color: #041017;
}

.page-main,
.home-main {
    max-width: 1220px;
    margin: 0 auto;
    padding: 24px 20px 64px;
}

.banner-slider {
    width: 100%;
    height: 350px;
    margin: 24px auto 34px;
    border-radius: 22px;
    background: #0A2632;
    box-shadow: 0 18px 44px rgba(0,230,246,0.14);
    overflow: hidden;
    position: relative;
    z-index: 1;
    border: 1px solid rgba(0,230,246,0.16);
}

.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: #0A2632;
}

.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 3;
    border: none;
    border-radius: 999px;
    width: 42px;
    height: 42px;
    background: rgba(4,16,23,0.82);
    color: #00E6F6;
    box-shadow: 0 8px 20px rgba(0,230,246,0.16);
    font-size: 24px;
    cursor: pointer;
}

.slider-arrow.prev {
    left: 14px;
}

.slider-arrow.next {
    right: 14px;
}

.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;
    padding: 0;
    border-radius: 50%;
    border: none;
    background: rgba(0,230,246,0.24);
    cursor: pointer;
}

.slider-dots button.active {
    background: #00E6F6;
}

.section {
    margin: 34px 0;
}

.section-head {
    max-width: 820px;
    margin-bottom: 22px;
}

.section-kicker,
.badge,
.num,
.label {
    color: #00E6F6;
    font-weight: 800;
    letter-spacing: .06em;
}

h1,
h2,
h3,
.section-title {
    color: #00E6F6;
    line-height: 1.25;
    margin-top: 0;
}

h1 {
    font-size: clamp(32px, 5vw, 58px);
    margin-bottom: 18px;
}

h2 {
    font-size: clamp(24px, 3vw, 36px);
    margin-bottom: 14px;
}

h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

p {
    color: #EAFBFF;
    margin-top: 0;
}

.lead-text,
.section-head p,
.text-panel p,
.feature-grid p,
.review-card p,
.faq-list p,
.footer-brand p,
.footer-notice p {
    color: #A8C8D6;
}

.text-link {
    color: #00C8FF;
    font-weight: 700;
    display: inline-flex;
    margin-top: 10px;
}

.text-link:hover {
    color: #00E6F6;
}

.card,
.zone-card,
.info-card,
.review-card,
.text-panel,
.notice-strip,
.quick-item,
.story-card,
.category-pill,
.faq-list details {
    background: rgba(10,38,50,0.92);
    border: 1px solid rgba(0,230,246,0.16);
    box-shadow: 0 16px 40px rgba(0,230,246,0.08);
    border-radius: 22px;
}

.inner-hero,
.brand-intro,
.media-band,
.app-band,
.saba-band {
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: 28px;
    align-items: center;
    border-radius: 28px;
    background:
        linear-gradient(135deg, rgba(0,230,246,0.12), rgba(0,119,255,0.04)),
        rgba(10,38,50,0.90);
    border: 1px solid rgba(0,230,246,0.18);
    box-shadow: 0 20px 48px rgba(0,230,246,0.10);
    padding: 32px;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
}

.hero-visual-wrap,
.content-img-wrap {
    margin: 0;
    width: 100%;
    border-radius: 24px;
    background: #0E3340;
    border: 1px solid rgba(0,230,246,0.16);
    overflow: hidden;
    padding: 14px;
}

.hero-visual,
.content-img,
.zone-card img,
.app-section img,
.banner-slider img {
    max-width: 100%;
    height: auto;
    object-fit: contain;
}

.hero-visual {
    width: 100%;
    max-height: 300px;
    object-fit: contain;
}

.content-img {
    width: 100%;
    max-height: 260px;
    object-fit: contain;
}

.feature-grid,
.quick-grid,
.info-board,
.review-grid,
.news-wall,
.faq-grid {
    display: grid;
    gap: 18px;
}

.feature-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.quick-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.info-board {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.review-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.news-wall {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card,
.quick-item,
.info-card,
.review-card,
.story-card,
.text-panel,
.category-pill {
    padding: 22px;
}

.info-card .num {
    font-size: 28px;
    display: inline-block;
    margin-bottom: 8px;
}

.quick-item {
    min-height: 166px;
}

.platform-strip {
    padding: 24px 28px;
    border-radius: 22px;
    background: linear-gradient(135deg, rgba(0,230,246,0.14), rgba(0,200,255,0.04));
    border: 1px solid rgba(0,230,246,0.22);
}

.split-section,
.dual-section {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
}

.zone-card {
    overflow: hidden;
}

.zone-card img {
    width: 100%;
    height: 210px;
    object-fit: contain;
    background: #0E3340;
    padding: 10px;
}

.zone-card .zone-copy {
    padding: 22px;
}

.clean-list {
    padding-left: 20px;
    margin: 14px 0 0;
    color: #DDF8FF;
}

.clean-list li {
    margin: 8px 0;
}

.saba-band,
.app-band,
.media-band {
    grid-template-columns: .9fr 1.1fr;
}

.news-wall .story-card {
    min-height: 210px;
}

.notice-strip {
    padding: 26px;
    border-color: rgba(0,230,246,0.24);
    background:
        linear-gradient(135deg, rgba(0,230,246,0.10), rgba(0,156,184,0.06)),
        rgba(6,19,27,0.96);
}

.faq-list {
    display: grid;
    gap: 12px;
}

.faq-list details {
    padding: 18px 20px;
}

.faq-list summary {
    color: #B7EFFF;
    cursor: pointer;
    font-weight: 800;
}

.faq-list details[open] summary {
    color: #00E6F6;
}

.category-pills {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.category-pill h3 {
    margin-bottom: 8px;
}

.home-about {
    padding: 28px;
    border-radius: 24px;
    background: rgba(10,38,50,0.92);
    border: 1px solid rgba(0,230,246,0.16);
}

.site-footer {
    background: #041017;
    color: #DDF8FF;
    border-top: 1px solid rgba(0,230,246,0.14);
    padding: 40px 20px 34px;
}

.footer-inner {
    max-width: 1220px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.3fr 1fr 1.2fr;
    gap: 28px;
    align-items: start;
}

.footer-logo img {
    width: 136px;
    max-height: 46px;
    object-fit: contain;
    margin-bottom: 14px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.footer-links a {
    color: #B7EFFF;
}

.footer-links a:hover {
    color: #00E6F6;
}

.footer-notice {
    padding: 18px;
    border-radius: 18px;
    background: rgba(10,38,50,0.70);
    border: 1px solid rgba(0,230,246,0.12);
}

.drawer-mask {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.48);
    z-index: 95;
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s ease;
}

.mobile-drawer {
    position: fixed;
    top: 0;
    left: 0;
    width: 84vw;
    max-width: 320px;
    height: 100vh;
    background: #071B24;
    z-index: 100;
    transform: translateX(-105%);
    transition: transform .25s ease;
    border-right: 1px solid rgba(0,230,246,0.18);
    box-shadow: 18px 0 40px rgba(0,0,0,.32);
    overflow-y: auto;
}

.drawer-head {
    height: 70px;
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #0A2632;
}

.drawer-logo img {
    width: 132px;
    max-height: 44px;
    object-fit: contain;
}

.drawer-close {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    border: 1px solid rgba(0,230,246,0.18);
    background: rgba(4,16,23,.70);
    color: #00E6F6;
    font-size: 26px;
    cursor: pointer;
}

.drawer-nav {
    display: grid;
    padding: 14px;
    gap: 8px;
}

.drawer-nav a {
    color: #B7EFFF;
    padding: 12px 14px;
    border-radius: 14px;
    background: rgba(10,38,50,.72);
    border: 1px solid rgba(0,230,246,0.08);
}

.drawer-nav a.active,
.drawer-nav a:hover {
    color: #00E6F6;
    border-color: rgba(0,230,246,0.24);
}

.menu-open {
    overflow: hidden;
}

.menu-open .drawer-mask {
    opacity: 1;
    pointer-events: auto;
}

.menu-open .mobile-drawer {
    transform: translateX(0);
}

.mobile-bottom-nav {
    display: none;
}

@media (max-width: 1180px) {
    .floating-service {
        display: none;
    }

    .nav-core a {
        padding: 8px 10px;
    }
}

@media (max-width: 900px) {
    body {
        padding-top: 70px;
        padding-bottom: 74px;
    }

    .top-nav {
        height: 70px;
        justify-content: space-between;
        gap: 12px;
    }

    .menu-toggle {
        display: block;
        flex: 0 0 auto;
    }

    .nav-core,
    .channel-bar {
        display: none;
    }

    .brand-logo {
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
    }

    .brand-logo img {
        width: 128px;
        max-height: 42px;
    }

    .header-register {
        min-height: 38px;
        padding: 8px 14px;
        font-size: 13px;
        margin-left: auto;
    }

    .home-main,
    .page-main {
        padding: 18px 14px 46px;
    }

    .banner-slider {
        height: 210px;
        border-radius: 18px;
        margin-top: 16px;
    }

    .slider-arrow {
        width: 34px;
        height: 34px;
        font-size: 20px;
    }

    .inner-hero,
    .brand-intro,
    .media-band,
    .app-band,
    .saba-band,
    .split-section,
    .dual-section {
        grid-template-columns: 1fr;
        padding: 22px;
    }

    .feature-grid,
    .quick-grid,
    .info-board,
    .review-grid,
    .news-wall,
    .category-pills {
        grid-template-columns: 1fr;
    }

    .zone-card img {
        height: 180px;
    }

    .footer-inner {
        grid-template-columns: 1fr;
    }

    .mobile-bottom-nav {
        position: fixed;
        left: 10px;
        right: 10px;
        bottom: 10px;
        z-index: 75;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 6px;
        padding: 8px;
        border-radius: 20px;
        background: rgba(4,16,23,0.94);
        border: 1px solid rgba(0,230,246,0.16);
        box-shadow: 0 14px 30px rgba(0,0,0,.26);
        backdrop-filter: blur(12px);
    }

    .mobile-bottom-nav a {
        text-align: center;
        color: #B7EFFF;
        padding: 8px 4px;
        border-radius: 14px;
        font-size: 13px;
        font-weight: 700;
    }

    .mobile-bottom-nav a:hover {
        color: #00E6F6;
        background: rgba(0,230,246,0.08);
    }
}

@media (max-width: 520px) {
    h1 {
        font-size: 30px;
    }

    h2 {
        font-size: 23px;
    }

    .brand-logo img {
        width: 112px;
    }

    .main-btn {
        padding: 8px 14px;
    }

    .banner-slider {
        height: 176px;
    }

    .card,
    .quick-item,
    .info-card,
    .review-card,
    .story-card,
    .text-panel,
    .category-pill,
    .notice-strip {
        padding: 18px;
        border-radius: 18px;
    }

    .hero-visual {
        max-height: 220px;
    }

    .content-img {
        max-height: 210px;
    }
}