* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: #E6EBF2;
    color: #243447;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.78;
    overflow-x: hidden;
}

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

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 {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 72px;
}

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

.logo img {
    max-height: 52px;
    width: auto;
}

.nav-wrap {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    justify-content: center;
}

.nav {
    display: flex;
    align-items: center;
    gap: 18px;
    white-space: nowrap;
    flex-wrap: nowrap;
}

.nav a,
.more-trigger,
.dropdown > a {
    color: #4E5F7A;
    font-weight: 700;
    font-size: 15px;
    padding: 23px 0 20px;
    position: relative;
    border: 0;
    background: transparent;
    cursor: pointer;
    font-family: inherit;
}

.nav a:hover,
.more-trigger:hover,
.dropdown:hover > a,
.nav a.active,
.dropdown.active > a,
.more-dropdown.active .more-trigger {
    color: #289CFF;
}

.nav a.active::after,
.dropdown.active > a::after,
.more-dropdown.active .more-trigger::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 14px;
    height: 3px;
    border-radius: 999px;
    background: #289CFF;
    box-shadow: 0 0 14px rgba(40,156,255,0.38);
}

.header-action {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
}

.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 24px;
    background: linear-gradient(180deg, #32D1F6 0%, #27B9F4 35%, #249BFF 100%);
    color: #FFFFFF;
    border-radius: 999px;
    box-shadow: 0 10px 24px rgba(36,155,255,0.25);
    font-weight: 800;
    border: 0;
    transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}

.main-btn:hover {
    color: #FFFFFF;
    background: linear-gradient(180deg, #48D9F7 0%, #1E90F0 100%);
    transform: translateY(-1px);
    box-shadow: 0 12px 30px rgba(36,155,255,0.32);
}

.dropdown,
.more-dropdown {
    position: relative;
}

.dropdown-menu,
.more-menu {
    position: absolute;
    top: 100%;
    left: -18px;
    min-width: 180px;
    background: #FFFFFF;
    border: 1px solid rgba(40,156,255,0.12);
    border-radius: 14px;
    box-shadow: 0 18px 38px rgba(56,92,138,0.16);
    z-index: 10000;
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity .18s ease, visibility .18s ease, transform .18s ease;
}

.more-menu {
    right: 0;
    left: auto;
}

.dropdown:hover .dropdown-menu,
.more-dropdown:hover .more-menu,
.dropdown:focus-within .dropdown-menu,
.more-dropdown:focus-within .more-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a,
.more-menu a {
    display: block;
    padding: 10px 14px;
    color: #4E5F7A;
    white-space: nowrap;
    border-radius: 10px;
    font-size: 14px;
}

.dropdown-menu a:hover,
.more-menu a:hover {
    color: #289CFF;
    background: rgba(40,156,255,0.08);
}

.mobile-menu-btn {
    display: none;
    width: 42px;
    height: 42px;
    border: 0;
    background: #FFFFFF;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(56,92,138,0.12);
    padding: 10px;
}

.mobile-menu-btn span {
    display: block;
    height: 2px;
    background: #4E5F7A;
    margin: 5px 0;
    border-radius: 999px;
}

.drawer-mask {
    position: fixed;
    inset: 0;
    background: rgba(36,52,71,0.38);
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: opacity .2s ease, visibility .2s ease;
}

.mobile-drawer {
    position: fixed;
    top: 0;
    left: 0;
    width: 84vw;
    max-width: 320px;
    height: 100vh;
    background: #FFFFFF;
    z-index: 10001;
    transform: translateX(-105%);
    transition: transform .25s ease;
    box-shadow: 18px 0 42px rgba(36,52,71,0.20);
    overflow-y: auto;
}

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

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

.drawer-open {
    overflow: hidden;
}

.drawer-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px;
    border-bottom: 1px solid rgba(40,156,255,0.12);
}

.drawer-logo img {
    max-height: 46px;
}

.drawer-close {
    width: 38px;
    height: 38px;
    border: 0;
    border-radius: 12px;
    background: #EEF2F7;
    color: #289CFF;
    font-size: 24px;
    cursor: pointer;
}

.drawer-nav {
    display: grid;
    gap: 6px;
    padding: 16px;
}

.drawer-nav a {
    display: block;
    padding: 12px 14px;
    border-radius: 12px;
    color: #4E5F7A;
    font-weight: 700;
    background: #F5F7FB;
}

.drawer-nav a:hover {
    color: #289CFF;
    background: rgba(40,156,255,0.10);
}

.site-main {
    min-height: 60vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.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;
    height: clamp(220px, 42vw, 520px);
    z-index: 1;
}

.slider-track,
.slide {
    width: 100%;
    height: 100%;
}

.slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity .45s ease, visibility .45s ease;
}

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

.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%;
    width: 42px;
    height: 42px;
    transform: translateY(-50%);
    border: 0;
    border-radius: 999px;
    background: rgba(255,255,255,0.88);
    box-shadow: 0 10px 22px rgba(56,92,138,0.16);
    cursor: pointer;
}

.slider-arrow::before {
    content: "";
    position: absolute;
    top: 14px;
    width: 12px;
    height: 12px;
    border-top: 3px solid #289CFF;
    border-left: 3px solid #289CFF;
}

.slider-arrow.prev {
    left: 18px;
}

.slider-arrow.next {
    right: 18px;
}

.slider-arrow.prev::before {
    left: 17px;
    transform: rotate(-45deg);
}

.slider-arrow.next::before {
    right: 17px;
    transform: rotate(135deg);
}

.slider-dots {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 16px;
    display: flex;
    justify-content: center;
    gap: 10px;
}

.slider-dot {
    width: 10px;
    height: 10px;
    border: 0;
    border-radius: 999px;
    background: rgba(78,95,122,0.36);
    cursor: pointer;
    padding: 0;
}

.slider-dot.active {
    width: 28px;
    background: #289CFF;
}

.section {
    padding: 42px 0;
}

.section.alt {
    background: #EEF2F7;
}

.section.soft {
    background: #F5F7FB;
}

.hero-card,
.card,
.zone-card,
.info-card,
.review-card,
.faq-item,
.notice-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-card {
    padding: clamp(26px, 5vw, 48px);
}

.hero-grid,
.two-col,
.image-text {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, .9fr);
    gap: 28px;
    align-items: center;
}

.kicker {
    display: inline-flex;
    color: #289CFF;
    background: rgba(40,156,255,0.10);
    border: 1px solid rgba(40,156,255,0.16);
    border-radius: 999px;
    padding: 4px 12px;
    font-weight: 800;
    margin-bottom: 12px;
}

h1,
h2,
h3,
.section-title {
    color: #289CFF;
    line-height: 1.28;
    margin: 0 0 16px;
}

h1 {
    font-size: clamp(30px, 5vw, 54px);
}

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

h3 {
    font-size: 21px;
}

p {
    margin: 0 0 14px;
}

.lead {
    color: #243447;
    font-size: 17px;
}

.muted {
    color: #66788A;
}

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

.grid-2,
.grid-3,
.grid-4 {
    display: grid;
    gap: 20px;
}

.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,
.zone-card,
.info-card,
.review-card,
.faq-item,
.notice-card {
    padding: 24px;
}

.card img,
.zone-card img,
.info-card img,
.content-img,
.app-visual img {
    width: 100%;
    object-fit: contain;
    background: #FFFFFF;
    border-radius: 18px;
}

.card img,
.zone-card img {
    max-height: 260px;
    margin-bottom: 18px;
}

.content-img {
    max-height: 360px;
    box-shadow: 0 14px 36px rgba(56,92,138,0.10);
    border: 1px solid rgba(40,156,255,0.12);
}

.link-more {
    display: inline-flex;
    margin-top: 8px;
    color: #289CFF;
    font-weight: 800;
}

.feature-list,
.clean-list {
    display: grid;
    gap: 12px;
    margin: 20px 0 0;
    padding: 0;
    list-style: none;
}

.feature-list li,
.clean-list li {
    padding: 14px 16px;
    border-radius: 16px;
    background: #F5F7FB;
    border: 1px solid rgba(40,156,255,0.12);
}

.number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 999px;
    background: rgba(40,156,255,0.12);
    color: #289CFF;
    font-weight: 900;
    margin-bottom: 12px;
}

.page-hero {
    padding: 44px 0 30px;
}

.page-hero .hero-card {
    background: linear-gradient(135deg, rgba(255,255,255,0.96), rgba(238,242,247,0.96));
}

.review-card p {
    color: #4E5F7A;
}

.review-card strong {
    color: #289CFF;
}

.faq-list {
    display: grid;
    gap: 16px;
}

.faq-item h3 {
    margin-bottom: 8px;
}

.alert-strip {
    background: #DDE4EE;
    border: 1px solid rgba(40,156,255,0.16);
    color: #243447;
    padding: 18px 20px;
    border-radius: 18px;
    margin-top: 24px;
}

.site-footer {
    background: #243447;
    color: #EAF3FF;
    margin-top: 58px;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 46px 24px;
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.8fr);
    gap: 36px;
}

.footer-logo img {
    max-height: 52px;
    margin-bottom: 16px;
}

.footer-brand p {
    color: #EAF3FF;
    opacity: .88;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.footer-links h3 {
    color: #EAF3FF;
    margin-bottom: 12px;
    font-size: 18px;
}

.footer-links a {
    display: block;
    color: #EAF3FF;
    opacity: .86;
    margin: 8px 0;
}

.footer-links a:hover {
    opacity: 1;
    color: #FFFFFF;
}

.footer-note {
    border-top: 1px solid rgba(234,243,255,0.14);
    max-width: 1200px;
    margin: 0 auto;
    padding: 18px 24px 24px;
    color: #EAF3FF;
    opacity: .86;
    font-size: 14px;
}

@media (max-width: 1100px) {
    .nav {
        gap: 14px;
    }
    .nav a,
    .more-trigger,
    .dropdown > a {
        font-size: 14px;
    }
}

@media (max-width: 960px) {
    .header-inner {
        min-height: 68px;
        padding: 0 14px;
        gap: 10px;
        display: grid;
        grid-template-columns: 48px 1fr auto;
    }
    .mobile-menu-btn {
        display: block;
    }
    .nav-wrap {
        display: none;
    }
    .logo {
        justify-content: center;
    }
    .logo img {
        max-height: 46px;
        margin: 0 auto;
    }
    .main-btn {
        min-height: 38px;
        padding: 0 18px;
    }
    .container {
        padding: 0 16px;
    }
    .hero-grid,
    .two-col,
    .image-text,
    .footer-inner {
        grid-template-columns: 1fr;
    }
    .grid-4,
    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
    }
    .footer-links {
        grid-template-columns: 1fr;
    }
    .banner-slider {
        margin: 18px 16px 28px;
        border-radius: 16px;
        height: clamp(190px, 56vw, 360px);
    }
    .section {
        padding: 30px 0;
    }
    .slider-arrow {
        width: 36px;
        height: 36px;
    }
    .slider-arrow.prev {
        left: 10px;
    }
    .slider-arrow.next {
        right: 10px;
    }
}

@media (max-width: 420px) {
    .main-btn {
        padding: 0 14px;
        font-size: 14px;
    }
    .logo img {
        max-height: 40px;
    }
    h1 {
        font-size: 28px;
    }
    .card,
    .zone-card,
    .info-card,
    .review-card,
    .faq-item,
    .notice-card,
    .hero-card {
        border-radius: 18px;
        padding: 20px;
    }
}