* {
    box-sizing: border-box;
}
:root {
    --bg: #E6EBF2;
    --nav-bg: #F5F7FB;
    --white: #FFFFFF;
    --soft: #EEF2F7;
    --soft-deep: #DDE4EE;
    --title: #289CFF;
    --nav-text: #4E5F7A;
    --text: #243447;
    --muted: #66788A;
    --light-text: #8A9AAF;
    --footer: #243447;
    --footer-text: #EAF3FF;
    --border: rgba(40,156,255,0.16);
    --shadow: 0 14px 36px rgba(56,92,138,0.12);
    --btn: linear-gradient(180deg, #32D1F6 0%, #27B9F4 35%, #249BFF 100%);
}
html {
    scroll-behavior: smooth;
}
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
}
a {
    color: inherit;
    text-decoration: none;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
.site-header {
    position: sticky;
    top: 0;
    z-index: 9999;
    background: var(--nav-bg);
    border-bottom: 1px solid rgba(40,156,255,0.12);
    box-shadow: 0 10px 24px rgba(56,92,138,0.08);
}
.desktop-header {
    display: block;
}
.mobile-header {
    display: none;
}
.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 72px;
}
.logo {
    flex: 0 0 auto;
    display: 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-toggle,
.dropdown > a {
    color: var(--nav-text);
    font-size: 15px;
    font-weight: 600;
    padding: 24px 0;
    border: 0;
    background: transparent;
    cursor: pointer;
    font-family: inherit;
}
.nav a:hover,
.more-toggle:hover,
.dropdown:hover > a,
.dropdown.active > a,
.more-dropdown.active > .more-toggle,
.nav a.active {
    color: var(--title);
}
.nav a.active,
.dropdown.active > a,
.more-dropdown.active > .more-toggle {
    position: relative;
}
.nav a.active::after,
.dropdown.active > a::after,
.more-dropdown.active > .more-toggle::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 14px;
    height: 3px;
    border-radius: 999px;
    background: var(--title);
}
.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 22px;
    border-radius: 999px;
    background: var(--btn);
    color: #FFFFFF;
    font-weight: 700;
    box-shadow: 0 12px 24px rgba(36,155,255,0.25);
    border: 0;
    white-space: nowrap;
}
.main-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 16px 30px rgba(36,155,255,0.30);
}
.text-link {
    color: var(--title);
    font-weight: 700;
}
.dropdown,
.more-dropdown {
    position: relative;
}
.dropdown-menu,
.more-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    padding: 10px;
    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;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all .2s ease;
}
.more-menu {
    right: 0;
    left: auto;
    min-width: 210px;
}
.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: 12px 16px;
    color: var(--nav-text);
    white-space: nowrap;
    border-radius: 10px;
    font-size: 14px;
}
.dropdown-menu a:hover,
.more-menu a:hover {
    color: var(--title);
    background: rgba(40,156,255,0.08);
}
.site-main {
    min-height: 70vh;
}
.container {
    width: min(1200px, calc(100% - 32px));
    margin: 0 auto;
}
.page-hero {
    padding: 56px 0 26px;
}
.hero-panel {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(260px, .85fr);
    gap: 28px;
    align-items: center;
    background: rgba(255,255,255,0.92);
    border: 1px solid var(--border);
    border-radius: 26px;
    box-shadow: var(--shadow);
    padding: 34px;
}
.hero-panel h1,
.hero-copy h1 {
    margin: 0 0 16px;
    font-size: clamp(30px, 4vw, 52px);
    line-height: 1.15;
    color: var(--title);
}
.hero-panel p,
.hero-copy p {
    margin: 0 0 16px;
    color: var(--muted);
}
.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}
.hero-tags span,
.tag {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 7px 13px;
    background: rgba(40,156,255,0.10);
    color: var(--title);
    font-weight: 700;
    font-size: 14px;
}
.hero-img,
.content-img {
    width: 100%;
    border-radius: 20px;
    background: #FFFFFF;
    box-shadow: 0 12px 28px rgba(56,92,138,0.10);
    object-fit: contain;
}
.banner-slider {
    width: min(1200px, calc(100% - 32px));
    margin: 28px auto 36px;
    border-radius: 24px;
    background: #FFFFFF;
    box-shadow: 0 18px 40px rgba(56,92,138,0.12);
    overflow: hidden;
    position: relative;
    border: 1px solid rgba(40,156,255,0.14);
}
.slider-track {
    position: relative;
    height: clamp(260px, 45vw, 540px);
}
.slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity .45s ease;
    background: #FFFFFF;
}
.slide.is-active {
    opacity: 1;
    z-index: 2;
}
.banner-slider img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #FFFFFF;
}
.slider-arrow {
    position: absolute;
    top: 50%;
    z-index: 4;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.65);
    background: rgba(36,52,71,0.45);
    color: #FFFFFF;
    font-size: 26px;
    cursor: pointer;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
}
.slider-arrow:hover {
    background: rgba(36,52,71,0.68);
}
.slider-arrow.prev { left: 18px; }
.slider-arrow.next { right: 18px; }
.slider-dots {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 16px;
    z-index: 5;
    display: flex;
    justify-content: center;
    gap: 10px;
}
.slider-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 0;
    background: rgba(36,52,71,0.28);
    cursor: pointer;
}
.slider-dot.is-active {
    width: 24px;
    border-radius: 999px;
    background: var(--title);
}
.section {
    padding: 36px 0;
}
.section.alt {
    background: rgba(255,255,255,0.24);
}
.section-head {
    margin-bottom: 24px;
}
.eyebrow {
    color: var(--title);
    font-weight: 800;
    letter-spacing: .04em;
    margin: 0 0 8px;
}
.section-title,
.section h2 {
    margin: 0 0 12px;
    color: var(--title);
    font-size: clamp(24px, 3vw, 36px);
    line-height: 1.25;
}
.section-desc {
    margin: 0;
    max-width: 780px;
    color: var(--muted);
}
.grid {
    display: grid;
    gap: 20px;
}
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card,
.zone-card,
.info-card,
.review-card,
.faq-item,
.step-card {
    background: rgba(255,255,255,0.92);
    border: 1px solid var(--border);
    box-shadow: 0 14px 36px rgba(56,92,138,0.10);
    border-radius: 22px;
    padding: 24px;
}
.card h3,
.zone-card h3,
.info-card h3,
.review-card h3,
.faq-item h3,
.step-card h3 {
    margin: 0 0 10px;
    color: var(--title);
    font-size: 20px;
}
.card p,
.zone-card p,
.info-card p,
.review-card p,
.faq-item p,
.step-card p {
    margin: 0;
    color: var(--muted);
}
.card + .card {
    margin-top: 18px;
}
.zone-card img,
.app-section img {
    width: 100%;
    border-radius: 18px;
    margin-bottom: 16px;
    object-fit: contain;
    background: #FFFFFF;
}
.split {
    display: grid;
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: 28px;
    align-items: center;
}
.split.reverse {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
}
.app-section {
    background: rgba(255,255,255,0.92);
    border: 1px solid var(--border);
    border-radius: 28px;
    padding: 30px;
    box-shadow: var(--shadow);
}
.feature-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin-top: 18px;
}
.feature-list span {
    display: block;
    padding: 12px 14px;
    background: #EEF2F7;
    border-radius: 14px;
    color: var(--text);
    font-weight: 700;
}
.notice-box {
    padding: 22px 24px;
    border-radius: 22px;
    background: #DDE4EE;
    color: var(--text);
    border: 1px solid rgba(40,156,255,0.16);
}
.notice-box p {
    margin: 0;
}
.steps {
    counter-reset: step;
}
.step-card {
    position: relative;
    padding-left: 76px;
}
.step-card::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 24px;
    top: 24px;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: rgba(40,156,255,0.12);
    color: var(--title);
    font-weight: 900;
    display: flex;
    align-items: center;
    justify-content: center;
}
.review-card p {
    font-size: 15px;
}
.review-card strong {
    display: block;
    margin-top: 14px;
    color: var(--text);
}
.faq-list {
    display: grid;
    gap: 16px;
}
.meta-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 18px;
}
.meta-list span {
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(40,156,255,0.10);
    color: var(--title);
    font-weight: 700;
}
.site-footer {
    background: var(--footer);
    color: var(--footer-text);
    margin-top: 48px;
}
.footer-inner {
    width: min(1200px, calc(100% - 32px));
    margin: 0 auto;
    padding: 48px 0 28px;
    display: grid;
    grid-template-columns: minmax(280px, 1.1fr) minmax(0, 1.9fr);
    gap: 36px;
}
.footer-brand img {
    max-height: 56px;
    width: auto;
    margin-bottom: 18px;
}
.footer-brand p,
.footer-notice p {
    color: rgba(234,243,255,0.82);
    margin: 0;
}
.footer-links {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}
.footer-links h3 {
    margin: 0 0 14px;
    color: #FFFFFF;
}
.footer-links a {
    display: block;
    color: rgba(234,243,255,0.78);
    margin: 8px 0;
}
.footer-links a:hover {
    color: #FFFFFF;
}
.footer-notice {
    border-top: 1px solid rgba(234,243,255,0.12);
    width: min(1200px, calc(100% - 32px));
    margin: 0 auto;
    padding: 18px 0 28px;
    display: grid;
    gap: 8px;
}
.mobile-drawer,
.drawer-mask {
    display: none;
}
@media (max-width: 1060px) {
    .nav {
        gap: 14px;
    }
    .nav a,
    .more-toggle,
    .dropdown > a {
        font-size: 14px;
    }
    .header-inner {
        gap: 16px;
    }
}
@media (max-width: 900px) {
    .desktop-header {
        display: none;
    }
    .mobile-header {
        min-height: 64px;
        padding: 0 14px;
        display: grid;
        grid-template-columns: 54px 1fr auto;
        align-items: center;
        gap: 10px;
    }
    .menu-btn {
        width: 42px;
        height: 42px;
        border: 0;
        background: #FFFFFF;
        border-radius: 14px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        gap: 5px;
        padding: 0 10px;
        box-shadow: 0 8px 18px rgba(56,92,138,0.10);
    }
    .menu-btn span {
        height: 2px;
        border-radius: 2px;
        background: var(--title);
    }
    .mobile-logo {
        justify-self: center;
    }
    .mobile-logo img {
        max-height: 46px;
        width: auto;
    }
    .mobile-register {
        min-height: 38px;
        padding: 0 16px;
    }
    .mobile-drawer {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: 84vw;
        max-width: 320px;
        background: #FFFFFF;
        z-index: 10002;
        transform: translateX(-105%);
        transition: transform .28s ease;
        box-shadow: 24px 0 44px rgba(36,52,71,0.20);
        overflow-y: auto;
    }
    .drawer-mask {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(36,52,71,0.36);
        z-index: 10001;
        opacity: 0;
        visibility: hidden;
        transition: all .25s ease;
    }
    .drawer-open .mobile-drawer {
        transform: translateX(0);
    }
    .drawer-open .drawer-mask {
        opacity: 1;
        visibility: visible;
    }
    .drawer-open {
        overflow: hidden;
    }
    .drawer-top {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 18px;
        border-bottom: 1px solid rgba(40,156,255,0.14);
        background: #F5F7FB;
    }
    .drawer-top img {
        max-height: 48px;
        width: auto;
    }
    .drawer-close {
        width: 38px;
        height: 38px;
        border-radius: 50%;
        border: 0;
        color: var(--title);
        background: rgba(40,156,255,0.10);
        font-size: 26px;
        line-height: 1;
    }
    .drawer-nav {
        padding: 14px;
        display: grid;
        gap: 8px;
    }
    .drawer-nav a {
        padding: 12px 14px;
        border-radius: 14px;
        color: var(--nav-text);
        background: #F5F7FB;
        font-weight: 700;
    }
    .drawer-nav a:hover {
        color: var(--title);
        background: rgba(40,156,255,0.10);
    }
    .hero-panel,
    .split,
    .split.reverse {
        grid-template-columns: 1fr;
    }
    .grid.three,
    .grid.four,
    .grid.two {
        grid-template-columns: 1fr;
    }
    .footer-inner {
        grid-template-columns: 1fr;
    }
    .footer-links {
        grid-template-columns: 1fr;
    }
    .feature-list {
        grid-template-columns: 1fr;
    }
    .slider-track {
        height: clamp(210px, 60vw, 380px);
    }
    .slider-arrow {
        width: 36px;
        height: 36px;
        font-size: 22px;
    }
}
@media (max-width: 520px) {
    .container,
    .banner-slider {
        width: calc(100% - 24px);
    }
    .hero-panel,
    .app-section,
    .card,
    .zone-card,
    .info-card,
    .review-card,
    .faq-item,
    .step-card {
        border-radius: 18px;
        padding: 20px;
    }
    .step-card {
        padding-left: 62px;
    }
    .step-card::before {
        left: 18px;
        top: 20px;
    }
    .page-hero {
        padding-top: 34px;
    }
}