* {
    box-sizing: border-box;
}

:root {
    --page-bg: #EAF2FB;
    --content-bg: #FFFFFF;
    --soft-bg: #F4F8FF;
    --soft-bg-2: #EDF5FF;
    --soft-bg-3: #E1ECF8;
    --primary: #2FA8F7;
    --bright: #45C7FF;
    --deep: #137CD8;
    --title: #137CD8;
    --text: #24364F;
    --muted: #5D718A;
    --footer-bg: #102B46;
    --footer-text: #EAF6FF;
    --border: rgba(47, 168, 247, 0.18);
    --shadow: 0 18px 45px rgba(43, 91, 132, 0.12);
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
    --header-height: 74px;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    margin: 0;
    color: var(--text);
    background: var(--page-bg);
    font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.78;
    overflow-x: hidden;
}

body.drawer-open {
    overflow: hidden;
}

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

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

button,
input,
textarea,
select {
    font: inherit;
}

button {
    cursor: pointer;
}

.container {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
}

.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 1000;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.92);
    border-bottom: 1px solid rgba(19, 124, 216, 0.09);
    box-shadow: 0 8px 24px rgba(36, 54, 79, 0.06);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.desktop-header,
.mobile-header {
    height: 100%;
    display: flex;
    align-items: center;
}

.desktop-header {
    gap: 32px;
}

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

.brand-logo img {
    width: 156px;
    max-height: 52px;
    object-fit: contain;
}

.core-nav {
    display: flex;
    align-items: stretch;
    justify-content: center;
    gap: 8px;
    min-width: 0;
    flex: 1;
    height: 100%;
    white-space: nowrap;
}

.core-nav a {
    position: relative;
    display: flex;
    align-items: center;
    padding: 0 14px;
    color: var(--muted);
    font-weight: 700;
    border-radius: 12px;
    transition: color .2s ease, background .2s ease;
}

.core-nav a::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 10px;
    width: 0;
    height: 3px;
    border-radius: 999px;
    background: var(--primary);
    transform: translateX(-50%);
    transition: width .2s ease;
}

.core-nav a:hover,
.core-nav a.active {
    color: var(--deep);
    background: var(--soft-bg);
}

.core-nav a:hover::after,
.core-nav a.active::after {
    width: 24px;
}

.register-button {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    min-height: 42px;
    padding: 9px 24px;
    color: #FFFFFF;
    font-weight: 800;
    line-height: 1;
    border-radius: 999px;
    background: linear-gradient(135deg, #45C7FF 0%, #2FA8F7 48%, #137CD8 100%);
    box-shadow: 0 10px 22px rgba(19, 124, 216, 0.25);
    transition: transform .2s ease, box-shadow .2s ease;
}

.register-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 28px rgba(19, 124, 216, 0.32);
}

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

.mobile-header {
    display: none;
    justify-content: space-between;
    gap: 12px;
}

.mobile-logo img,
.drawer-logo img {
    width: 132px;
    max-height: 46px;
    object-fit: contain;
}

.menu-toggle {
    width: 44px;
    height: 44px;
    padding: 0;
    border: 0;
    border-radius: 14px;
    background: var(--soft-bg);
    display: grid;
    place-content: center;
    gap: 5px;
}

.menu-toggle span {
    display: block;
    width: 21px;
    height: 2px;
    border-radius: 999px;
    background: var(--deep);
}

.mobile-register {
    min-height: 38px;
    padding: 8px 18px;
    font-size: 14px;
}

.channel-bar-wrap {
    position: fixed;
    z-index: 900;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(244, 248, 255, 0.94);
    border-bottom: 1px solid rgba(47, 168, 247, 0.10);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.channel-bar {
    display: flex;
    align-items: center;
    gap: 9px;
    min-height: 52px;
    padding-top: 8px;
    padding-bottom: 8px;
    overflow-x: auto;
    scrollbar-width: none;
    white-space: nowrap;
}

.channel-bar::-webkit-scrollbar {
    display: none;
}

.channel-bar a {
    flex: 0 0 auto;
    padding: 6px 13px;
    color: var(--muted);
    font-size: 14px;
    border: 1px solid rgba(47, 168, 247, 0.10);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.76);
    transition: .2s ease;
}

.channel-bar a:hover,
.channel-bar a.active {
    color: #FFFFFF;
    border-color: transparent;
    background: linear-gradient(135deg, var(--bright), var(--deep));
}

.site-main {
    min-height: 70vh;
    padding-top: calc(var(--header-height) + 52px);
}

.page-section {
    padding: 46px 0;
}

.page-section.compact {
    padding-top: 28px;
    padding-bottom: 28px;
}

.section-heading {
    max-width: 760px;
    margin-bottom: 24px;
}

.section-heading.centered {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    color: var(--deep);
    font-size: 14px;
    font-weight: 800;
    letter-spacing: .06em;
}

.eyebrow::before {
    content: "";
    width: 22px;
    height: 3px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--bright), var(--deep));
}

h1,
h2,
h3,
h4,
p {
    margin-top: 0;
}

h1,
h2,
h3,
h4 {
    color: var(--title);
    line-height: 1.35;
}

h1 {
    margin-bottom: 18px;
    font-size: clamp(30px, 5vw, 50px);
    letter-spacing: -.02em;
}

h2 {
    margin-bottom: 14px;
    font-size: clamp(25px, 3.4vw, 36px);
}

h3 {
    margin-bottom: 10px;
    font-size: 21px;
}

p:last-child {
    margin-bottom: 0;
}

.lead {
    color: var(--muted);
    font-size: 18px;
    line-height: 1.9;
}

.card,
.content-panel,
.hero-card,
.notice-strip,
.faq-item,
.review-card,
.stat-card {
    border: 1px solid var(--border);
    background: var(--content-bg);
    box-shadow: var(--shadow);
}

.hero-card,
.content-panel {
    border-radius: var(--radius-lg);
}

.page-hero {
    padding: 46px 0 28px;
}

.hero-card {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(330px, .95fr);
    align-items: center;
    gap: 36px;
    padding: 42px;
    overflow: hidden;
}

.hero-card.no-image {
    display: block;
    max-width: 980px;
}

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

.hero-actions,
.text-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 18px;
    align-items: center;
    margin-top: 24px;
}

.text-link {
    color: var(--deep);
    font-weight: 800;
}

.text-link:hover {
    text-decoration: underline;
}

.hero-media {
    display: flex;
    min-height: 280px;
    align-items: center;
    justify-content: center;
    padding: 16px;
    border-radius: 24px;
    background: linear-gradient(145deg, var(--soft-bg), #FFFFFF);
}

.hero-media img,
.card-media img,
.feature-media img {
    width: 100%;
    max-height: 420px;
    object-fit: contain;
}

.carousel-shell {
    padding: 28px 0 20px;
}

.carousel {
    position: relative;
    overflow: hidden;
    border: 10px solid #FFFFFF;
    border-radius: 30px;
    background: #FFFFFF;
    box-shadow: 0 22px 55px rgba(43, 91, 132, 0.16);
}

.carousel-track {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 6.2;
    min-height: 260px;
    overflow: hidden;
    border-radius: 21px;
    background: var(--soft-bg-3);
}

.carousel-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    pointer-events: none;
    transition: opacity .45s ease;
}

.carousel-slide.active {
    opacity: 1;
    pointer-events: auto;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.carousel-arrow {
    position: absolute;
    z-index: 2;
    top: 50%;
    width: 46px;
    height: 46px;
    border: 0;
    border-radius: 50%;
    color: #FFFFFF;
    font-size: 30px;
    line-height: 1;
    background: rgba(16, 43, 70, .52);
    transform: translateY(-50%);
    transition: background .2s ease, transform .2s ease;
}

.carousel-arrow:hover {
    background: rgba(19, 124, 216, .84);
    transform: translateY(-50%) scale(1.04);
}

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

.carousel-dots {
    position: absolute;
    z-index: 2;
    left: 50%;
    bottom: 16px;
    display: flex;
    gap: 8px;
    transform: translateX(-50%);
}

.carousel-dot {
    width: 10px;
    height: 10px;
    padding: 0;
    border: 2px solid rgba(255,255,255,.9);
    border-radius: 50%;
    background: rgba(16,43,70,.38);
}

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

.split-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.content-panel {
    padding: 32px;
}

.content-panel.soft {
    background: linear-gradient(145deg, var(--soft-bg), #FFFFFF);
}

.intro-panel {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 32px;
    align-items: center;
}

.feature-media {
    min-height: 260px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    border-radius: 22px;
    background: var(--soft-bg);
}

.quick-grid,
.card-grid,
.info-board,
.review-grid,
.faq-grid {
    display: grid;
    gap: 20px;
}

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

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

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

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

.card,
.stat-card,
.review-card {
    border-radius: var(--radius-md);
    padding: 24px;
}

.card {
    transition: transform .2s ease, box-shadow .2s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 22px 46px rgba(43, 91, 132, 0.16);
}

.card p,
.stat-card p,
.review-card p,
.faq-item p,
.content-panel p {
    color: var(--muted);
}

.card-media {
    min-height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: -4px -4px 20px;
    padding: 12px;
    border-radius: 18px;
    background: var(--soft-bg);
}

.card-media img {
    max-height: 220px;
}

.quick-link-card {
    position: relative;
    min-height: 176px;
    overflow: hidden;
}

.quick-link-card::after {
    content: "↗";
    position: absolute;
    right: 22px;
    bottom: 20px;
    color: rgba(19, 124, 216, .35);
    font-size: 28px;
    font-weight: 800;
}

.notice-strip {
    padding: 25px 30px;
    border-radius: 20px;
    background: linear-gradient(100deg, #FFFFFF, var(--soft-bg-2));
}

.stat-card {
    min-height: 185px;
    background: linear-gradient(160deg, #FFFFFF, var(--soft-bg));
}

.stat-card .number {
    display: block;
    margin-bottom: 8px;
    color: var(--deep);
    font-size: 34px;
    font-weight: 900;
}

.check-list,
.inline-list {
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
}

.check-list li,
.inline-list li {
    position: relative;
    margin: 8px 0;
    padding-left: 22px;
    color: var(--muted);
}

.check-list li::before,
.inline-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: .72em;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--bright), var(--deep));
}

.review-card {
    position: relative;
    padding-top: 34px;
}

.review-card::before {
    content: "“";
    position: absolute;
    top: 4px;
    left: 20px;
    color: rgba(47, 168, 247, .24);
    font-size: 62px;
    font-family: Georgia, serif;
    line-height: 1;
}

.review-card strong {
    display: block;
    margin-top: 14px;
    color: var(--deep);
}

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

.faq-item {
    padding: 24px 26px;
    border-radius: 18px;
    box-shadow: 0 12px 28px rgba(43, 91, 132, 0.08);
}

.faq-item h3 {
    font-size: 18px;
}

.article-content {
    font-size: 17px;
}

.article-content h2 {
    margin-top: 34px;
}

.article-content h3 {
    margin-top: 26px;
}

.article-content p,
.article-content li {
    color: var(--muted);
}

.article-content ul,
.article-content ol {
    padding-left: 22px;
}

.article-content .content-panel + .content-panel {
    margin-top: 22px;
}

.app-guide-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin: 24px 0;
}

.app-guide-step {
    padding: 22px;
    border-radius: 18px;
    background: var(--soft-bg);
    border: 1px solid var(--border);
}

.app-guide-step strong {
    display: inline-grid;
    place-items: center;
    width: 34px;
    height: 34px;
    margin-bottom: 10px;
    color: #FFFFFF;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--bright), var(--deep));
}

.service-float {
    position: fixed;
    z-index: 820;
    top: 50%;
    right: 20px;
    width: 122px;
    padding: 12px;
    display: grid;
    gap: 8px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: rgba(255,255,255,.94);
    box-shadow: 0 18px 42px rgba(43,91,132,.17);
    transform: translateY(-50%);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.service-float > a:not(.register-button),
.service-float button {
    display: block;
    padding: 9px 8px;
    color: var(--deep);
    text-align: center;
    font-size: 14px;
    font-weight: 700;
    border: 0;
    border-radius: 12px;
    background: var(--soft-bg);
}

.service-float button:hover,
.service-float > a:not(.register-button):hover {
    background: var(--soft-bg-3);
}

.service-float .register-button {
    padding-left: 10px;
    padding-right: 10px;
}

.mobile-drawer {
    position: fixed;
    z-index: 1200;
    inset: 0 auto 0 0;
    width: min(86vw, 350px);
    padding: 18px;
    background: #FFFFFF;
    box-shadow: 18px 0 45px rgba(16,43,70,.18);
    transform: translateX(-105%);
    transition: transform .25s ease;
    overflow-y: auto;
}

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

.drawer-overlay {
    position: fixed;
    z-index: 1150;
    inset: 0;
    opacity: 0;
    background: rgba(16,43,70,.45);
    transition: opacity .22s ease;
}

.drawer-overlay.show {
    opacity: 1;
}

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

.drawer-close {
    width: 42px;
    height: 42px;
    border: 0;
    border-radius: 13px;
    color: var(--deep);
    font-size: 30px;
    line-height: 1;
    background: var(--soft-bg);
}

.drawer-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 9px;
    padding: 18px 0 28px;
}

.drawer-nav a {
    padding: 11px 12px;
    color: var(--muted);
    font-weight: 700;
    border-radius: 12px;
    background: var(--soft-bg);
}

.drawer-nav a.active,
.drawer-nav a:hover {
    color: #FFFFFF;
    background: linear-gradient(135deg, var(--bright), var(--deep));
}

.site-footer {
    margin-top: 48px;
    padding: 52px 0 24px;
    color: var(--footer-text);
    background: var(--footer-bg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: 34px;
}

.footer-brand img {
    width: 160px;
    max-height: 54px;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.footer-brand p,
.footer-notice p {
    color: rgba(234,246,255,.78);
}

.footer-links {
    display: grid;
    align-content: start;
    gap: 9px;
}

.footer-links h2 {
    margin-bottom: 6px;
    color: #FFFFFF;
    font-size: 17px;
}

.footer-links a {
    color: rgba(234,246,255,.76);
}

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

.footer-notice {
    margin-top: 34px;
    padding-top: 22px;
    display: flex;
    justify-content: space-between;
    gap: 24px;
    border-top: 1px solid rgba(234,246,255,.13);
    font-size: 14px;
}

.footer-notice p:first-child {
    max-width: 820px;
}

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

.muted-box {
    padding: 20px 22px;
    color: var(--muted);
    border-left: 4px solid var(--primary);
    border-radius: 14px;
    background: var(--soft-bg);
}

.breadcrumb {
    display: flex;
    gap: 8px;
    align-items: center;
    padding-top: 24px;
    color: var(--muted);
    font-size: 14px;
}

.breadcrumb a {
    color: var(--deep);
}

@media (max-width: 1320px) {
    .service-float {
        right: 8px;
        width: 110px;
    }
}

@media (max-width: 1100px) {
    .desktop-header {
        gap: 18px;
    }

    .brand-logo img {
        width: 136px;
    }

    .core-nav a {
        padding-left: 9px;
        padding-right: 9px;
        font-size: 14px;
    }

    .service-float {
        display: none;
    }

    .hero-card {
        grid-template-columns: 1fr .9fr;
        padding: 34px;
    }

    .quick-grid,
    .card-grid.three,
    .info-board {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 820px) {
    :root {
        --header-height: 66px;
    }

    .desktop-header,
    .channel-bar-wrap {
        display: none;
    }

    .mobile-header {
        display: flex;
    }

    .site-main {
        padding-top: var(--header-height);
    }

    .page-section {
        padding: 34px 0;
    }

    .page-hero {
        padding-top: 28px;
    }

    .hero-card,
    .intro-panel,
    .split-panel {
        grid-template-columns: 1fr;
    }

    .hero-card {
        padding: 28px;
    }

    .hero-media {
        min-height: 220px;
    }

    .carousel-shell {
        padding-top: 18px;
    }

    .carousel {
        border-width: 7px;
        border-radius: 24px;
    }

    .carousel-track {
        min-height: 220px;
        aspect-ratio: 16 / 8.4;
        border-radius: 18px;
    }

    .carousel-arrow {
        width: 40px;
        height: 40px;
    }

    .footer-grid {
        grid-template-columns: 1.2fr 1fr 1fr;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }

    .mobile-bottom-nav {
        position: fixed;
        z-index: 950;
        left: 12px;
        right: 12px;
        bottom: 10px;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        padding: 8px;
        border: 1px solid var(--border);
        border-radius: 18px;
        background: rgba(255,255,255,.95);
        box-shadow: 0 14px 34px rgba(16,43,70,.18);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
    }

    .mobile-bottom-nav a {
        padding: 7px 4px;
        color: var(--deep);
        text-align: center;
        font-size: 13px;
        font-weight: 800;
        border-radius: 12px;
    }

    .mobile-bottom-nav a:hover {
        background: var(--soft-bg);
    }

    .site-footer {
        padding-bottom: 110px;
    }
}

@media (max-width: 620px) {
    .container {
        width: min(100% - 22px, 1180px);
    }

    h1 {
        font-size: 31px;
    }

    h2 {
        font-size: 26px;
    }

    .page-section {
        padding-top: 28px;
        padding-bottom: 28px;
    }

    .hero-card,
    .content-panel,
    .card,
    .stat-card,
    .review-card,
    .faq-item {
        padding: 22px;
    }

    .carousel-track {
        min-height: 180px;
        aspect-ratio: 16 / 9;
    }

    .carousel-arrow {
        width: 36px;
        height: 36px;
        font-size: 24px;
    }

    .carousel-arrow.prev { left: 10px; }
    .carousel-arrow.next { right: 10px; }

    .carousel-dots {
        bottom: 10px;
    }

    .quick-grid,
    .card-grid.three,
    .card-grid.two,
    .info-board,
    .review-grid,
    .faq-grid,
    .app-guide-grid {
        grid-template-columns: 1fr;
    }

    .quick-link-card,
    .stat-card {
        min-height: 0;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 26px 20px;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }

    .footer-notice {
        display: block;
    }

    .drawer-nav {
        grid-template-columns: 1fr;
    }

    .mobile-logo img {
        width: 116px;
    }
}

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