* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: #E6EBF2;
    color: #243447;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
}

a {
    color: #289CFF;
    text-decoration: none;
}

a:hover {
    color: #1E90F0;
}

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 9999;
    background: #F5F7FB;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 24px rgba(56,92,138,0.10);
}

.header-inner {
    width: min(1240px, calc(100% - 36px));
    min-height: 78px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 22px;
}

.logo img,
.mobile-logo img,
.drawer-logo img,
.footer-brand img {
    width: 142px;
    height: auto;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2px;
    flex-wrap: wrap;
}

.nav a {
    position: relative;
    color: #4E5F7A;
    font-size: 14px;
    font-weight: 700;
    padding: 10px 8px;
    border-radius: 999px;
    white-space: nowrap;
}

.nav a.active,
.nav a:hover {
    color: #289CFF;
}

.nav a.active::after {
    content: "";
    position: absolute;
    left: 18%;
    right: 18%;
    bottom: 3px;
    height: 3px;
    border-radius: 999px;
    background: #289CFF;
    box-shadow: 0 4px 12px rgba(40,156,255,0.35);
}

.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 42px;
    padding: 0 24px;
    border-radius: 999px;
    background: linear-gradient(180deg, #32D1F6 0%, #27B9F4 35%, #249BFF 100%);
    color: #FFFFFF;
    border: 0;
    box-shadow: 0 10px 24px rgba(36,155,255,0.25);
    font-weight: 800;
    cursor: pointer;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.main-btn:hover {
    background: linear-gradient(180deg, #48D9F7 0%, #1E90F0 100%);
    color: #FFFFFF;
    transform: translateY(-1px);
    box-shadow: 0 14px 30px rgba(36,155,255,0.30);
}

.header-btn {
    min-width: 86px;
}

.mobile-topbar {
    display: none;
    height: 66px;
    width: 100%;
    padding: 0 14px;
    grid-template-columns: 58px 1fr 82px;
    align-items: center;
    gap: 8px;
}

.menu-toggle,
.drawer-close,
.slider-btn {
    appearance: none;
    border: 0;
    cursor: pointer;
}

.menu-toggle {
    width: 46px;
    height: 46px;
    border-radius: 14px;
    background: #FFFFFF;
    border: 1px solid rgba(40,156,255,0.16);
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    box-shadow: 0 8px 18px rgba(56,92,138,0.10);
}

.menu-toggle span {
    width: 22px;
    height: 2px;
    background: #4E5F7A;
    border-radius: 999px;
}

.mobile-logo {
    display: flex;
    justify-content: center;
}

.mobile-logo img {
    width: 128px;
}

.drawer-mask {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.42);
    opacity: 0;
    visibility: hidden;
    z-index: 10000;
    transition: opacity .25s ease, visibility .25s ease;
}

.drawer-mask.show {
    opacity: 1;
    visibility: visible;
}

.mobile-drawer {
    position: fixed;
    left: 0;
    top: 0;
    width: 84vw;
    max-width: 320px;
    height: 100vh;
    background: #FFFFFF;
    z-index: 10001;
    transform: translateX(-102%);
    transition: transform .28s ease;
    box-shadow: 20px 0 45px rgba(36,52,71,.20);
    overflow-y: auto;
}

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

.drawer-open {
    overflow: hidden;
}

.drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 18px 12px;
    border-bottom: 1px solid rgba(40,156,255,0.14);
    background: #F5F7FB;
}

.drawer-logo img {
    width: 126px;
}

.drawer-close {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: #FFFFFF;
    color: #4E5F7A;
    font-size: 28px;
    line-height: 1;
}

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

.drawer-nav a {
    display: block;
    padding: 12px 14px;
    border-radius: 14px;
    color: #4E5F7A;
    font-weight: 800;
    background: #F5F7FB;
    border: 1px solid rgba(40,156,255,0.10);
}

.drawer-nav a.active,
.drawer-nav a:hover {
    color: #289CFF;
    border-color: rgba(40,156,255,0.25);
    background: #EEF2F7;
}

.container {
    width: min(1200px, calc(100% - 36px));
    margin: 0 auto;
}

.page-hero,
.section,
.notice-strip {
    width: min(1200px, calc(100% - 36px));
    margin: 32px auto;
}

.page-hero {
    background: rgba(255,255,255,0.92);
    border: 1px solid rgba(40,156,255,0.16);
    border-radius: 26px;
    box-shadow: 0 14px 36px rgba(56,92,138,0.12);
    padding: 38px;
    overflow: hidden;
}

.hero-grid,
.split-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, .9fr);
    gap: 30px;
    align-items: center;
}

.eyebrow,
.tag {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    padding: 5px 12px;
    border-radius: 999px;
    color: #289CFF;
    background: rgba(40,156,255,0.10);
    border: 1px solid rgba(40,156,255,0.16);
    font-size: 13px;
    font-weight: 800;
    margin-bottom: 12px;
}

h1, h2, h3, .section-title {
    color: #289CFF;
    line-height: 1.28;
    margin: 0 0 14px;
}

h1 {
    font-size: clamp(30px, 5vw, 52px);
    letter-spacing: -1px;
}

h2,
.section-title {
    font-size: clamp(24px, 3vw, 34px);
}

h3 {
    font-size: 21px;
}

p {
    margin: 0 0 14px;
    color: #243447;
}

.lead {
    font-size: 17px;
    color: #4E5F7A;
}

.muted {
    color: #66788A;
}

.small-text {
    color: #8A9AAF;
    font-size: 14px;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 22px;
}

.text-link {
    font-weight: 800;
    color: #289CFF;
}

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

.hero-img,
.media-box {
    border-radius: 22px;
    background: #FFFFFF;
    border: 1px solid rgba(40,156,255,0.14);
    box-shadow: 0 14px 36px rgba(56,92,138,0.10);
    padding: 12px;
}

.hero-img img,
.media-box img,
.card img,
.zone-card img,
.feature-card img {
    width: 100%;
    max-height: 340px;
    object-fit: contain;
    background: #FFFFFF;
    border-radius: 18px;
}

.section-head {
    max-width: 780px;
    margin-bottom: 22px;
}

.card,
.zone-card,
.info-card,
.review-card,
.faq-item,
.step-card,
.feature-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;
    padding: 24px;
}

.grid-2,
.grid-3,
.grid-4 {
    display: grid;
    gap: 18px;
}

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

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

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

.card h3,
.zone-card h3,
.info-card h3,
.review-card h3,
.faq-item h3,
.step-card h3,
.feature-card h3 {
    margin-bottom: 10px;
}

.card p,
.zone-card p,
.info-card p,
.review-card p,
.faq-item p,
.step-card p,
.feature-card p {
    color: #4E5F7A;
}

.num {
    display: inline-flex;
    width: 34px;
    height: 34px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: #FFFFFF;
    background: #289CFF;
    font-weight: 900;
    margin-bottom: 12px;
}

.banner-slider {
    max-width: 1200px;
    margin: 28px auto 36px;
    border-radius: 20px;
    background: #FFFFFF;
    box-shadow: 0 18px 40px rgba(56,92,138,0.12);
    overflow: hidden;
    position: relative;
}

.slider-track {
    position: relative;
    height: clamp(210px, 42vw, 520px);
}

.slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity .45s ease, visibility .45s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #FFFFFF;
}

.slide.active {
    opacity: 1;
    visibility: visible;
}

.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-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(255,255,255,.88);
    color: #289CFF;
    font-size: 28px;
    font-weight: 800;
    box-shadow: 0 8px 20px rgba(56,92,138,0.16);
    z-index: 3;
}

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

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

.slider-dots {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 14px;
    display: flex;
    justify-content: center;
    gap: 8px;
    z-index: 4;
}

.slider-dots button {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 0;
    background: rgba(78,95,122,.35);
    cursor: pointer;
    padding: 0;
}

.slider-dots button.active {
    width: 28px;
    border-radius: 999px;
    background: #289CFF;
}

.link-list {
    display: grid;
    gap: 10px;
    margin-top: 14px;
}

.link-list a {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(40,156,255,0.12);
    font-weight: 800;
}

.review-card strong {
    color: #289CFF;
    display: block;
    margin-bottom: 8px;
}

.notice-strip {
    background: #DDE4EE;
    border-radius: 24px;
    padding: 24px 28px;
    border: 1px solid rgba(40,156,255,0.16);
}

.notice-strip h2 {
    font-size: 24px;
}

.site-footer {
    margin-top: 56px;
    background: #243447;
    color: #EAF3FF;
}

.footer-inner {
    width: min(1200px, calc(100% - 36px));
    margin: 0 auto;
    padding: 44px 0 30px;
    display: grid;
    grid-template-columns: 1.4fr .8fr .8fr 1.4fr;
    gap: 26px;
}

.site-footer p,
.site-footer a,
.site-footer h3 {
    color: #EAF3FF;
}

.footer-brand img {
    margin-bottom: 14px;
    width: 142px;
}

.footer-links {
    display: grid;
    align-content: start;
    gap: 8px;
}

.footer-links h3,
.footer-notice h3 {
    margin-bottom: 6px;
    color: #EAF3FF;
}

.footer-bottom {
    text-align: center;
    padding: 18px;
    border-top: 1px solid rgba(234,243,255,.14);
    color: rgba(234,243,255,.72);
}

@media (max-width: 1100px) {
    .header-inner {
        display: none;
    }
    .mobile-topbar {
        display: grid;
    }
    .page-hero,
    .section,
    .notice-strip,
    .container,
    .banner-slider {
        width: min(100% - 28px, 1200px);
    }
    .grid-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .grid-3 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .footer-inner {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 760px) {
    .page-hero {
        padding: 26px 20px;
        margin-top: 20px;
    }
    .hero-grid,
    .split-grid,
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    .section {
        margin: 28px auto;
    }
    .card,
    .zone-card,
    .info-card,
    .review-card,
    .faq-item,
    .step-card,
    .feature-card {
        padding: 20px;
    }
    .footer-inner {
        grid-template-columns: 1fr;
    }
    .mobile-logo img {
        width: 112px;
    }
    .mobile-topbar {
        grid-template-columns: 52px 1fr 78px;
        padding: 0 10px;
    }
    .header-btn {
        min-width: 74px;
        padding: 0 16px;
    }
    .slider-btn {
        width: 36px;
        height: 36px;
        font-size: 22px;
    }
    .slider-track {
        height: clamp(190px, 58vw, 330px);
    }
}