* {
    box-sizing: border-box;
}

:root {
    --page-bg: #E6EBF2;
    --surface: #FFFFFF;
    --surface-soft: #F5F7FB;
    --surface-alt: #EEF2F7;
    --surface-deep: #DDE4EE;
    --primary: #289CFF;
    --nav-text: #4E5F7A;
    --text: #243447;
    --muted: #66788A;
    --hint: #8A9AAF;
    --border: rgba(40, 156, 255, 0.16);
    --shadow: 0 14px 36px rgba(56, 92, 138, 0.12);
    --radius: 20px;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    background: var(--page-bg);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}

body.drawer-open {
    overflow: hidden;
}

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

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

button,
a {
    -webkit-tap-highlight-color: transparent;
}

button {
    font: inherit;
}

.container {
    width: min(1180px, calc(100% - 40px));
    margin-inline: auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 9999;
    background: rgba(245, 247, 251, 0.94);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 8px 24px rgba(56, 92, 138, 0.10);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 72px;
}

.logo,
.header-action {
    flex: 0 0 auto;
}

.logo img {
    width: auto;
    max-width: 158px;
    max-height: 52px;
}

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

.desktop-nav {
    display: flex;
    align-items: center;
    gap: 17px;
    white-space: nowrap;
    flex-wrap: nowrap;
}

.nav-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    min-height: 72px;
    padding: 0 3px;
    border: 0;
    background: transparent;
    color: var(--nav-text);
    font-weight: 700;
    cursor: pointer;
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 12%;
    right: 12%;
    bottom: 0;
    height: 3px;
    border-radius: 999px 999px 0 0;
    background: var(--primary);
    transform: scaleX(0);
    transition: transform .22s ease;
}

.nav-link:hover,
.nav-link:focus-visible,
.nav-link.active {
    color: var(--primary);
}

.nav-link:hover::after,
.nav-link:focus-visible::after,
.nav-link.active::after {
    transform: scaleX(1);
}

.nav-dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% - 5px);
    left: 50%;
    z-index: 10000;
    min-width: 190px;
    padding: 9px;
    border: 1px solid rgba(40, 156, 255, 0.12);
    border-radius: 14px;
    background: #FFFFFF;
    box-shadow: 0 18px 38px rgba(56, 92, 138, 0.16);
    opacity: 0;
    visibility: hidden;
    transform: translate(-50%, 8px);
    transition: opacity .18s ease, transform .18s ease, visibility .18s ease;
}

.more-menu {
    left: auto;
    right: 0;
    min-width: 210px;
    transform: translateY(8px);
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu,
.nav-dropdown.is-open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, 0);
}

.more-dropdown:hover .more-menu,
.more-dropdown:focus-within .more-menu,
.more-dropdown.is-open .more-menu {
    transform: translateY(0);
}

.dropdown-menu a {
    display: block;
    padding: 11px 14px;
    border-radius: 10px;
    color: var(--nav-text);
    font-weight: 600;
    white-space: nowrap;
}

.dropdown-menu a:hover,
.dropdown-menu a:focus-visible {
    color: var(--primary);
    background: rgba(40, 156, 255, 0.08);
}

.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 11px 24px;
    border-radius: 999px;
    background: linear-gradient(180deg, #32D1F6 0%, #27B9F4 35%, #249BFF 100%);
    color: #FFFFFF;
    box-shadow: 0 10px 24px rgba(36, 155, 255, 0.25);
    font-weight: 800;
    line-height: 1;
    transition: transform .2s ease, box-shadow .2s ease, filter .2s ease;
}

.main-btn:hover,
.main-btn:focus-visible {
    transform: translateY(-1px);
    filter: brightness(1.04);
    box-shadow: 0 13px 30px rgba(36, 155, 255, 0.32);
}

.mobile-menu-btn {
    display: none;
    width: 42px;
    height: 42px;
    padding: 9px;
    border: 0;
    border-radius: 12px;
    background: #FFFFFF;
    box-shadow: 0 6px 18px rgba(56, 92, 138, 0.12);
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    margin: 5px 0;
    border-radius: 999px;
    background: var(--nav-text);
}

.drawer-overlay {
    position: fixed;
    inset: 0;
    z-index: 10001;
    background: rgba(24, 44, 70, 0.38);
    opacity: 0;
    visibility: hidden;
    transition: opacity .25s ease, visibility .25s ease;
}

.mobile-drawer {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 10002;
    width: min(84vw, 320px);
    padding: 18px;
    overflow-y: auto;
    background: #FFFFFF;
    box-shadow: 18px 0 42px rgba(36, 52, 71, 0.2);
    transform: translateX(-105%);
    transition: transform .28s ease;
}

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

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

.drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.drawer-logo img {
    max-width: 140px;
    max-height: 46px;
}

.drawer-close {
    width: 40px;
    height: 40px;
    border: 0;
    border-radius: 12px;
    background: var(--surface-alt);
    color: var(--nav-text);
    font-size: 30px;
    line-height: 1;
    cursor: pointer;
}

.drawer-nav {
    display: grid;
    gap: 4px;
    padding: 16px 0;
}

.drawer-nav a {
    padding: 11px 13px;
    border-radius: 10px;
    color: var(--nav-text);
    font-weight: 700;
}

.drawer-nav a:hover,
.drawer-nav a:focus-visible {
    color: var(--primary);
    background: rgba(40, 156, 255, 0.08);
}

.drawer-note {
    margin: 4px 0 0;
    padding: 14px;
    border-radius: 14px;
    background: var(--surface-alt);
    color: var(--muted);
    font-size: 13px;
}

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

.banner-slider {
    position: relative;
    width: min(1200px, calc(100% - 40px));
    aspect-ratio: 16 / 6.2;
    margin: 28px auto 36px;
    overflow: hidden;
    border-radius: 22px;
    background: #FFFFFF;
    box-shadow: 0 18px 40px rgba(56, 92, 138, 0.12);
}

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

.banner-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity .55s ease, visibility .55s ease;
}

.banner-slide.is-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-arrow {
    position: absolute;
    top: 50%;
    z-index: 4;
    width: 44px;
    height: 44px;
    border: 1px solid rgba(255,255,255,.72);
    border-radius: 50%;
    background: rgba(36, 52, 71, 0.48);
    color: #FFFFFF;
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
    transform: translateY(-50%);
    transition: background .2s ease, transform .2s ease;
}

.slider-arrow:hover,
.slider-arrow:focus-visible {
    background: rgba(36, 52, 71, 0.7);
    transform: translateY(-50%) scale(1.04);
}

.slider-prev { left: 18px; }
.slider-next { right: 18px; }

.slider-dots {
    position: absolute;
    left: 50%;
    bottom: 16px;
    z-index: 4;
    display: flex;
    gap: 9px;
    transform: translateX(-50%);
}

.slider-dot {
    width: 10px;
    height: 10px;
    padding: 0;
    border: 1px solid rgba(255,255,255,.9);
    border-radius: 50%;
    background: rgba(36, 52, 71, 0.42);
    cursor: pointer;
    transition: width .2s ease, border-radius .2s ease, background .2s ease;
}

.slider-dot.is-active {
    width: 28px;
    border-radius: 999px;
    background: #FFFFFF;
}

.section {
    padding: 62px 0;
}

.section.tight {
    padding: 42px 0;
}

.section.alt {
    background: rgba(245, 247, 251, 0.72);
}

.section-deep {
    background: var(--surface-deep);
}

.section-head {
    max-width: 780px;
    margin-bottom: 28px;
}

.eyebrow {
    display: inline-flex;
    margin-bottom: 10px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .08em;
}

h1,
h2,
h3,
.section-title {
    margin-top: 0;
    color: var(--primary);
    line-height: 1.32;
}

h1 { font-size: clamp(34px, 5vw, 58px); }
h2 { font-size: clamp(26px, 3.5vw, 38px); }
h3 { font-size: 20px; }

.lead {
    font-size: clamp(17px, 2vw, 20px);
    color: var(--muted);
}

.text-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: auto;
    color: var(--primary);
    font-weight: 800;
}

.text-link::after {
    content: "→";
    transition: transform .2s ease;
}

.text-link:hover::after {
    transform: translateX(4px);
}

.card,
.zone-card,
.info-card,
.review-card,
.feature-panel,
.page-hero,
.notice-box,
.faq-item,
.timeline-step {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 14px 36px rgba(56, 92, 138, 0.10);
}

.page-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(320px, .92fr);
    align-items: center;
    gap: 42px;
    margin: 32px auto 0;
    padding: clamp(28px, 5vw, 56px);
}

.page-hero.no-image {
    grid-template-columns: 1fr;
}

.page-hero-copy p {
    color: var(--muted);
}

.hero-points {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 22px;
}

.hero-points span,
.tag {
    display: inline-flex;
    padding: 7px 12px;
    border-radius: 999px;
    background: rgba(40, 156, 255, 0.10);
    color: var(--primary);
    font-size: 13px;
    font-weight: 800;
}

.hero-media,
.media-card {
    overflow: hidden;
    border-radius: 18px;
    background: var(--surface-alt);
}

.hero-media img,
.media-card img,
.content-img,
.zone-card img,
.app-section img {
    width: 100%;
    height: auto;
    object-fit: contain;
    background: var(--surface-alt);
}

.split {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: center;
    gap: 34px;
}

.grid-2,
.grid-3,
.grid-4 {
    display: grid;
    gap: 22px;
}

.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,
.info-card,
.review-card,
.timeline-step {
    display: flex;
    flex-direction: column;
    padding: 24px;
}

.card p,
.info-card p,
.review-card p,
.timeline-step p {
    color: var(--muted);
}

.card .number,
.timeline-step .number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    margin-bottom: 16px;
    border-radius: 12px;
    background: rgba(40,156,255,.11);
    color: var(--primary);
    font-weight: 900;
}

.zone-card {
    overflow: hidden;
}

.zone-card-body {
    display: flex;
    flex-direction: column;
    min-height: 210px;
    padding: 22px;
}

.zone-card-body p {
    color: var(--muted);
}

.feature-list,
.check-list {
    display: grid;
    gap: 13px;
    margin: 22px 0 0;
    padding: 0;
    list-style: none;
}

.feature-list li,
.check-list li {
    position: relative;
    padding-left: 30px;
    color: var(--muted);
}

.feature-list li::before,
.check-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 1px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 21px;
    height: 21px;
    border-radius: 50%;
    background: rgba(40,156,255,.12);
    color: var(--primary);
    font-size: 13px;
    font-weight: 900;
}

.review-card .quote {
    color: var(--text);
    font-size: 17px;
}

.review-card .review-meta {
    margin-top: auto;
    padding-top: 16px;
    color: var(--hint);
    font-size: 13px;
    font-weight: 700;
}

.notice-box {
    padding: 24px 26px;
    background: #EEF6FF;
}

.notice-box strong {
    color: var(--primary);
}

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

.faq-item {
    padding: 22px 24px;
}

.faq-item h3 {
    margin-bottom: 10px;
}

.faq-item p {
    margin: 0;
    color: var(--muted);
}

.cta-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    margin-top: 24px;
}

.app-showcase {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(300px, .9fr);
    gap: 34px;
    align-items: center;
    padding: clamp(26px, 4vw, 46px);
    border-radius: 24px;
    background: #FFFFFF;
    box-shadow: var(--shadow);
}

.app-gallery {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.app-gallery img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 16px;
    background: var(--surface-alt);
}

.site-footer {
    margin-top: 70px;
    padding: 54px 0 24px;
    background: #243447;
    color: #EAF3FF;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: 38px;
}

.footer-grid h2 {
    margin-bottom: 14px;
    color: #FFFFFF;
    font-size: 18px;
}

.footer-grid a,
.footer-grid p {
    display: block;
    margin: 7px 0;
    color: rgba(234, 243, 255, .78);
    font-size: 14px;
}

.footer-grid a:hover {
    color: #FFFFFF;
}

.footer-logo img {
    width: auto;
    max-width: 160px;
    max-height: 52px;
    margin-bottom: 18px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin-top: 34px;
    padding-top: 22px;
    border-top: 1px solid rgba(234,243,255,.13);
}

.footer-bottom p {
    margin: 0;
    color: rgba(234, 243, 255, .65);
    font-size: 13px;
}

@media (max-width: 1100px) {
    .desktop-nav { gap: 11px; }
    .nav-link { font-size: 14px; }
    .logo img { max-width: 138px; }
    .header-inner { gap: 16px; }
    .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 920px) {
    .desktop-nav { display: none; }
    .nav-wrap { display: none; }
    .mobile-menu-btn { display: block; flex: 0 0 auto; }
    .header-inner { display: grid; grid-template-columns: 46px minmax(0, 1fr) auto; gap: 12px; min-height: 66px; }
    .logo { justify-self: center; }
    .logo img { max-width: 132px; max-height: 44px; }
    .header-register { min-height: 40px; padding: 10px 18px; }
    .page-hero,
    .split,
    .app-showcase { grid-template-columns: 1fr; }
    .page-hero { gap: 28px; }
    .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
    .container { width: min(100% - 26px, 1180px); }
    .header-inner { width: calc(100% - 20px); }
    .mobile-menu-btn { width: 40px; height: 40px; }
    .header-register { padding-inline: 15px; font-size: 14px; }
    .logo img { max-width: 118px; }
    .banner-slider {
        width: calc(100% - 26px);
        aspect-ratio: 16 / 9;
        margin-top: 18px;
        margin-bottom: 24px;
        border-radius: 16px;
    }
    .slider-arrow { width: 38px; height: 38px; font-size: 24px; }
    .slider-prev { left: 10px; }
    .slider-next { right: 10px; }
    .slider-dots { bottom: 10px; }
    .section { padding: 44px 0; }
    .section.tight { padding: 34px 0; }
    h1 { font-size: 34px; }
    h2 { font-size: 27px; }
    .page-hero { margin-top: 20px; padding: 24px; }
    .grid-2,
    .grid-3,
    .grid-4,
    .app-gallery { grid-template-columns: 1fr; }
    .card,
    .info-card,
    .review-card,
    .timeline-step { padding: 21px; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        scroll-behavior: auto !important;
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
    }
}