/* HelioCMS Default Template — Big Tech Minimalist (SEO Optimized) */
:root {
    --brand: #334155;
    /* Slate 700 */
    --brand-dark: #1e293b;
    /* Slate 800 */
    --brand-light: #f1f5f9;
    /* Slate 100 */
    --text: #334155;
    --text-secondary: #596882;
    --text-muted: #475569;
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --border: #e2e8f0;
    --radius: 12px;
    --shadow: 0 2px 10px rgba(51, 65, 85, 0.04);
    --shadow-md: 0 8px 24px rgba(51, 65, 85, 0.06);
    --shadow-lg: 0 16px 32px rgba(51, 65, 85, 0.08);
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --wrap: 1200px;
}

/* === Skip Navigation (a11y) === */
.skip-link {
    position: absolute;
    top: -100%;
    left: 16px;
    z-index: 9999;
    padding: 8px 16px;
    background: var(--brand);
    color: #fff;
    border-radius: 0 0 var(--radius) var(--radius);
    font-size: 14px;
    font-weight: 500;
}

.skip-link:focus {
    top: 0;
    color: #fff;
}

/* === Focus Visible (a11y) === */
:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 2px;
}

a:focus:not(:focus-visible),
button:focus:not(:focus-visible) {
    outline: none;
}

/* === Reset === */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    font-size: 16px;
    color: var(--text);
    line-height: 1.8;
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a {
    color: var(--brand);
    text-decoration: none;
    transition: color .15s, border-color .15s;
}

a:hover {
    color: var(--brand-dark);
}

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

ul,
ol {
    list-style: none;
}

.wrap {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 0 24px;
}

/* === Header === */
.site-header {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-header .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    font-size: 24px;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.5px;
    white-space: nowrap;
}

.logo:hover {
    color: var(--brand);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.main-nav a {
    color: var(--text-secondary);
    font-size: 16px;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all .15s;
    font-weight: 500;
}

.main-nav a:hover {
    color: var(--text);
    background: var(--bg-alt);
}

.main-nav a.active {
    color: var(--text);
    font-weight: 600;
    background: var(--bg-alt);
}

.header-phone a {
    color: var(--text);
    font-weight: 600;
    font-size: 16px;
    white-space: nowrap;
    border: 1px solid var(--border);
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.2s;
}

.header-phone a:hover {
    border-color: var(--text);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 24px;
    position: relative;
    padding: 0;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text);
    position: absolute;
    left: 0;
    transition: all .2s;
    border-radius: 2px;
}

.menu-toggle span:nth-child(1) {
    top: 0;
}

.menu-toggle span:nth-child(2) {
    top: 11px;
}

.menu-toggle span:nth-child(3) {
    top: 22px;
}

/* === Hero === */
.hero {
    background: linear-gradient(145deg, #f8fafc 0%, #ffffff 50%, #eff6ff 100%);
    color: var(--text);
    padding: 120px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -10%;
    width: 60%;
    height: 150%;
    background: radial-gradient(circle, rgba(0, 112, 243, 0.03) 0%, rgba(255, 255, 255, 0) 70%);
    transform: rotate(30deg);
    pointer-events: none;
}

.hero h1 {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -2px;
    line-height: 1.1;
}

.hero .hero-desc {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 36px;
    background: var(--text);
    color: #fff;
    font-weight: 600;
    border-radius: 8px;
    font-size: 16px;
    transition: all .2s;
}

.hero-btn:hover {
    background: #000;
    color: #fff;
    box-shadow: var(--shadow-md);
}

.hero-btn-outline {
    background: #fff;
    color: var(--text);
    border: 1px solid var(--border);
}

.hero-btn-outline:hover {
    background: var(--bg-alt);
    color: var(--text);
    border-color: #ccc;
    box-shadow: none;
    transform: none;
}


/* === Sections === */
.section {
    padding: 100px 0;
}

.section-alt {
    background: #f8fafc;
    /* Tailwind Slate-50, soft & elegant */
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

/* No vertical margins if sections are grouped */
.section+.section-alt {
    border-top: none;
}

.pb-section {
    padding-bottom: 120px;
}

.section-title {
    font-size: 32px;
    color: var(--text);
    text-align: center;
    margin-bottom: 16px;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.section-title a {
    color: inherit;
}

.section-title a:hover {
    color: var(--brand);
}

.section-desc {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 48px;
    font-size: 16px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-more {
    text-align: center;
    margin-top: 40px;
}

.section-more a {
    color: var(--brand);
    font-size: 16px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.section-more a:hover {
    color: var(--brand-dark);
    text-decoration: underline;
    text-underline-offset: 4px;
}

/* === Service Grid === */
.service-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.service-item {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px 32px;
    text-align: left;
    transition: all .25s;
    text-decoration: none;
    color: var(--text);
    display: flex;
    flex-direction: column;
}

.service-item:hover {
    border-color: transparent;
    box-shadow: var(--shadow-md);
}

.service-item h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text);
    letter-spacing: -0.5px;
}

.service-item:hover h3 {
    color: var(--brand);
}

.service-item p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
    flex-grow: 1;
}

.service-grid-2col {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    margin-top: 32px;
}

/* === About Section === */
.about-section {
    text-align: center;
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 48px;
    text-align: justify;
}

.about-text p {
    margin-bottom: 20px;
}

.about-text h2,
.about-text h3,
.about-text h4 {
    color: var(--text);
    text-align: left;
    margin: 28px 0 14px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.about-text h2 {
    font-size: 20px;
}

.about-text h3 {
    font-size: 18px;
}

.about-text img {
    border-radius: var(--radius);
    margin: 24px auto;
    border: 1px solid var(--border);
}

.about-text ul,
.about-text ol {
    text-align: left;
    margin: 16px 0 16px 24px;
}

.about-text li {
    margin-bottom: 8px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 48px;
    border-top: 1px solid var(--border);
    padding-top: 48px;
}

.stat-item {
    text-align: center;
    padding: 20px 12px;
}

.stat-item strong {
    display: block;
    font-size: 48px;
    font-weight: 800;
    color: var(--text);
    line-height: 1.1;
    margin-bottom: 8px;
    letter-spacing: -1px;
}

.stat-item p {
    font-size: 16px;
    color: var(--text-secondary);
    margin: 0;
    font-weight: 500;
}

.stats-grid {
    margin-top: 32px;
    margin-bottom: 0;
}

.stat-number {
    font-size: 36px;
}

.stat-text {
    font-size: 16px;
    margin-top: 8px;
    color: var(--text);
    font-weight: 500;
}

.about-more {
    margin-top: 24px;
}

.btn-more {
    color: var(--brand);
    font-size: 16px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.btn-more:hover {
    color: var(--brand-dark);
    text-decoration: underline;
    text-underline-offset: 4px;
}

/* === Article Grid (Homepage) === */
.article-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.article-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: box-shadow .2s, transform .2s, border-color .2s;
    display: flex;
    flex-direction: column;
}

.article-card:hover {
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.card-thumb {
    display: block;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
}

.card-thumb img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    aspect-ratio: 16/10;
    transition: transform .4s ease;
}

.card-thumb:hover img {
    opacity: 0.9;
}

.card-body {
    padding: 24px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.card-body h3 {
    font-size: 18px;
    line-height: 1.5;
    margin-bottom: 12px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.card-body h3 a {
    color: var(--text);
}

.card-body h3 a:hover {
    color: var(--brand);
}

.card-body p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-body time {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
}

/* === Advantage Grid === */
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 40px;
}

.advantage-item {
    background: #fff;
    padding: 40px;
    border-radius: var(--radius);
    transition: all .3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.advantage-item:hover {
    box-shadow: var(--shadow-md);
    border-color: #cbd5e1;
}

.adv-num {
    font-size: 64px;
    font-weight: 900;
    color: var(--bg-alt);
    line-height: 1;
    margin-bottom: 24px;
    letter-spacing: -2px;
    -webkit-text-stroke: 1px var(--border);
    transition: all .3s ease;
}

.advantage-item:hover .adv-num {
    color: var(--brand-light);
    -webkit-text-stroke: 1px transparent;
}

.advantage-item h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text);
    letter-spacing: -0.5px;
}

.advantage-item p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

/* === Reviews === */
.review-item {
    text-align: left;
    padding: 32px;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.review-quote {
    font-style: italic;
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    flex-grow: 1;
    margin-bottom: 24px;
}

.review-author {
    font-weight: 600;
    color: var(--text);
    font-size: 16px;
    margin-top: auto;
}

/* === Team Grid === */
.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.team-item {
    background: var(--bg-alt);
    padding: 32px 20px;
    border-radius: var(--radius);
    transition: all .3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border);
    text-align: center;
}

.team-item:hover {
    box-shadow: var(--shadow-md);
    border-color: #cbd5e1;
    background: #fff;
}

.team-item h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text);
}

.team-item p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.team-section {
    margin-bottom: 64px;
}

/* === FAQ Section === */
.faq-list {
    max-width: 800px;
    margin: 40px auto 0;
}

.faq-list details {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 16px;
    overflow: hidden;
    background: var(--bg);
    transition: border-color .2s, box-shadow .2s;
}

.faq-list details[open] {
    border-color: var(--brand);
    box-shadow: var(--shadow);
}

.faq-list summary {
    padding: 20px 32px;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: -0.3px;
    cursor: pointer;
    color: var(--text);
    position: relative;
    list-style: none;
    padding-right: 56px;
    transition: background .15s, color .15s;
}

.faq-list summary::-webkit-details-marker {
    display: none;
}

.faq-list summary::after {
    content: '+';
    position: absolute;
    right: 32px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 24px;
    color: var(--text-muted);
    font-weight: 300;
    transition: transform .2s, color .2s;
}

.faq-list details[open] summary::after {
    content: '-';
    color: var(--brand);
}

.faq-list summary:hover {
    background: var(--bg-alt);
}

.faq-list details[open] summary {
    background: var(--bg-alt);
    color: var(--text);
    border-bottom: 1px solid var(--border);
}

.faq-answer {
    padding: 20px 32px;
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.faq-answer a {
    color: var(--brand);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: 8px;
}

.faq-answer a:hover {
    text-decoration: underline;
    text-underline-offset: 4px;
}

/* === FAQ Homepage Block === */
.faq-section {
    background: var(--bg-alt);
    padding: 64px 0;
}

.faq-header {
    text-align: center;
    margin-bottom: 40px;
}

.faq-desc {
    margin-top: -16px;
    color: var(--text-secondary);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-more {
    text-align: center;
    margin-top: 32px;
}

.faq-more a {
    font-size: 14px;
    font-weight: 500;
    color: var(--brand);
}

/* === Partners === */
.cat-grid.partner-grid {
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
    margin-top: 24px;
}

.cat-card.partner-item {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
    min-height: 80px;
}

.partner-name {
    font-weight: 600;
    font-size: 16px;
    color: var(--text-secondary);
    text-align: center;
}

/* === Footer Extras === */
.footer-nav-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px 16px;
    margin-top: 8px;
    font-size: 14px;
}

.footer-bottom {
    padding: 24px 0;
    border-top: 1px solid var(--border);
    background: var(--bg-alt);
}

.footer-bottom-inner {
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 2;
}

.footer-icp-link {
    color: inherit;
    transition: color .2s;
    border-bottom: 1px dashed rgba(100, 116, 139, 0.3);
}

.footer-sitemap-link {
    color: var(--text-muted);
    transition: color .2s;
    font-size: 14px;
}

/* === Shared === */
.empty-state {
    padding: 40px 0;
    text-align: center;
    color: var(--text-muted);
}

.empty-state svg {
    margin-bottom: 15px;
    opacity: 0.5;
}

.list-wrap {
    padding-bottom: 80px;
}

/* === Product List (产品/服务列表页) === */
.product-list {
    margin-top: 24px;
    margin-bottom: 48px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.product-item {
    padding: 16px 24px;
    background: var(--bg-alt);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.product-item h2 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text);
    letter-spacing: -0.5px;
}

.product-item .article-body {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-secondary);
}

.content-wrap .page-title {
    margin-top: 0;
}

/* === Breadcrumb === */
.breadcrumb {
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
    font-size: 16px;
    color: var(--text-muted);
    font-weight: 500;
}

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

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

.breadcrumb .sep {
    margin: 0 12px;
    color: var(--border);
}

/* === Page Title === */
.page-title {
    text-align: center;
    font-size: 32px;
    color: var(--text);
    margin: 48px 0 16px;
    font-weight: 800;
    letter-spacing: -1px;
}

.page-desc {
    text-align: center;
    color: var(--text-secondary);
    font-size: 16px;
    margin-bottom: 48px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

/* === Article List (Category) === */
.article-list {
    margin-top: 24px;
}

.list-item {
    display: flex;
    gap: 24px;
    padding: 24px 0;
    border-bottom: 1px solid var(--border);
}

.list-item:last-child {
    border-bottom: none;
}

.list-thumb {
    flex-shrink: 0;
    display: block;
    overflow: hidden;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.list-thumb img {
    width: 220px;
    height: 146px;
    object-fit: cover;
    aspect-ratio: 3/2;
    transition: transform .4s ease;
}

.list-thumb:hover img {
    opacity: 0.9;
}

.list-body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.list-body h2 {
    font-size: 20px;
    margin-bottom: 10px;
    font-weight: 700;
    line-height: 1.4;
    letter-spacing: -0.5px;
}

.list-body h2 a {
    color: var(--text);
}

.list-body h2 a:hover {
    color: var(--brand);
    text-decoration: underline;
    text-underline-offset: 4px;
}

.list-body p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.item-meta {
    font-size: 16px;
    color: var(--text-muted);
    display: flex;
    gap: 20px;
    font-weight: 500;
}

/* === Content/Article Body === */
.content-wrap {
    padding-top: 48px;
    padding-bottom: 64px;
    max-width: 860px;
}

.article-detail h1 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.2;
    letter-spacing: -1px;
}

.article-meta {
    font-size: 16px;
    color: var(--text-muted);
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    font-weight: 500;
    margin-bottom: 48px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

.article-meta a {
    color: var(--text-secondary);
}

.article-meta a:hover {
    color: var(--text);
}

.article-body {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text);
}

.article-body h2 {
    font-size: 22px;
    margin: 36px 0 18px;
    color: var(--text);
    font-weight: 800;
    letter-spacing: -0.5px;
}

.article-body h3 {
    font-size: 18px;
    margin: 28px 0 14px;
    color: var(--text);
    font-weight: 700;
    letter-spacing: -0.3px;
}

.article-body h4 {
    font-size: 17px;
    margin: 24px 0 12px;
    font-weight: 700;
}

.article-body p {
    margin-bottom: 20px;
}

.article-body img {
    border-radius: var(--radius);
    margin: 32px auto;
    border: 1px solid var(--border);
}

.article-body ul,
.article-body ol {
    margin: 24px 0 24px 32px;
}

.article-body li {
    margin-bottom: 8px;
}

.article-body blockquote {
    border-left: 4px solid var(--text);
    padding: 16px 24px;
    margin: 32px 0;
    background: var(--bg-alt);
    border-radius: 0 var(--radius) var(--radius) 0;
    color: var(--text-secondary);
    font-style: italic;
    font-size: 16px;
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 32px 0;
}

.article-body th,
.article-body td {
    padding: 14px 20px;
    border: 1px solid var(--border);
    text-align: left;
    font-size: 16px;
}

.article-body th {
    background: var(--bg-alt);
    font-weight: 600;
    color: var(--text);
}

.source-link {
    margin-top: 48px;
    font-size: 16px;
    color: var(--text-muted);
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.source-link a {
    color: var(--text-secondary);
    font-weight: 500;
}

.source-link a:hover {
    color: var(--text);
}

/* === Prev/Next Navigation === */
.prev-next {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    margin: 48px 0;
    padding: 32px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.prev-next .prev,
.prev-next .next {
    flex: 1;
    font-size: 16px;
    color: var(--text-secondary);
    padding: 16px 24px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: all .2s;
    font-weight: 500;
}

.prev-next a.prev:hover,
.prev-next a.next:hover {
    color: var(--text);
    border-color: var(--text);
    box-shadow: var(--shadow);
}

.prev-next .next {
    text-align: right;
}

.prev-next .disabled {
    color: var(--text-muted);
    background: var(--bg-alt);
    border-color: transparent;
}

/* === Related Articles === */
.related-articles {
    margin-top: 64px;
}

.related-articles h2 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -0.5px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.related-articles ul {
    list-style: none;
}

.related-articles li {
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.related-articles li:last-child {
    border-bottom: none;
}

.related-articles li a {
    color: var(--text);
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 16px;
    font-weight: 500;
}

.related-articles li a:hover {
    color: var(--brand);
    text-decoration: underline;
    text-underline-offset: 4px;
}

.related-articles time {
    font-size: 14px;
    color: var(--text-muted);
    flex-shrink: 0;
    margin-left: 24px;
    font-weight: 500;
}

/* === Contact Info === */
.contact-info {
    margin-top: 32px;
    padding: 32px;
    background: var(--bg-alt);
    border-radius: 12px;
    border: 1px solid var(--border);
}

.contact-item {
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
}

.contact-item:last-child {
    border-bottom: none;
}

.contact-item strong {
    color: var(--text-secondary);
    font-weight: 600;
}

.contact-item a {
    color: var(--brand);
}

.contact-item a:hover {
    text-decoration: underline;
    text-underline-offset: 4px;
}

/* === Category Grid (Not homepage) === */
.cat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.cat-card {
    display: block;
    padding: 32px 24px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-align: center;
    transition: all .2s;
    color: var(--text);
}

.cat-card:hover {
    border-color: transparent;
    box-shadow: var(--shadow-md);
}

.cat-card strong {
    display: block;
    font-size: 20px;
    margin-bottom: 12px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.cat-card p {
    font-size: 16px;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
}

/* === Pagination === */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin: 64px 0 24px;
}

.pagination a,
.pagination .current {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
    padding: 0 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 16px;
    color: var(--text-secondary);
    transition: all .2s;
    font-weight: 500;
}

.pagination a:hover {
    background: var(--bg-alt);
    color: var(--text);
    border-color: #ccc;
}

.pagination .current {
    background: var(--text);
    color: #fff;
    border-color: var(--text);
    font-weight: 600;
}

/* === Empty === */
.empty-tip {
    text-align: center;
    color: var(--text-muted);
    padding: 120px 0;
    font-size: 18px;
    font-weight: 500;
}

/* === 404 === */
.error-page {
    text-align: center;
    padding: 160px 24px;
}

.error-code {
    font-size: 160px;
    font-weight: 900;
    color: var(--border);
    line-height: 1;
    letter-spacing: -4px;
}

.error-page h1 {
    font-size: 32px;
    margin: 24px 0 16px;
    font-weight: 800;
    letter-spacing: -1px;
}

.error-page p {
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 18px;
}

.btn-home {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: 14px 36px;
    background: var(--text);
    color: #fff;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    transition: all .2s;
}

.btn-home:hover {
    background: #000;
    color: #fff;
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

/* === Footer === */
.site-footer {
    background: #f1f5f9;
    color: var(--text-secondary);
    border-top: 1px solid var(--border);
    margin-top: 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    padding-top: 48px;
    padding-bottom: 48px;
}

.footer-about strong,
.footer-nav strong,
.footer-contact strong {
    display: block;
    color: var(--text);
    font-size: 16px;
    margin-bottom: 20px;
    font-weight: 600;
}

.footer-brand {
    font-size: 20px !important;
    font-weight: 800 !important;
    letter-spacing: -0.5px;
}

.footer-about p {
    font-size: 16px;
    line-height: 1.8;
    margin-top: 12px;
}

.footer-nav a {
    display: block;
    color: var(--text-secondary);
    font-size: 16px;
    font-weight: 500;
    transition: color 0.15s;
}

.footer-nav a:hover {
    color: var(--text);
}

.footer-contact {
    font-style: normal;
}

.footer-contact p {
    font-size: 16px;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.footer-contact a {
    color: var(--text-secondary);
    font-weight: 500;
}

.footer-contact a:hover {
    color: var(--text);
}

.footer-bottom {
    border-top: 1px solid var(--border);
    padding: 24px 0;
    font-size: 14px;
    text-align: center;
    color: var(--text-muted);
}

.footer-bottom p {
    margin-bottom: 4px;
}

.footer-bottom a {
    color: var(--text-muted);
    font-weight: 500;
    transition: color 0.15s;
}

.footer-bottom a:hover {
    color: var(--text);
}

/* === Responsive === */
@media (max-width: 991px) {
    .service-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .article-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

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

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

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

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

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

    .hero h1 {
        font-size: 44px;
    }

    .hero .hero-desc {
        font-size: 16px;
    }

    .hero {
        padding: 72px 0 56px;
    }

    .section {
        padding: 56px 0;
    }

    .section-title {
        font-size: 26px;
    }

    .section-desc {
        font-size: 16px;
    }

    .about-text {
        font-size: 16px;
    }

    .article-detail h1 {
        font-size: 28px;
    }

    .article-body {
        font-size: 16px;
    }

    .article-body h2 {
        font-size: 20px;
    }

    .article-body h3 {
        font-size: 18px;
    }

    .page-title {
        font-size: 28px;
    }

    .contact-info {
        padding: 24px;
    }

    .list-item {
        gap: 20px;
        padding: 20px 0;
    }

    .list-thumb img {
        width: 180px;
        height: 120px;
    }

    .stat-item strong {
        font-size: 40px;
    }
}

@media (max-width: 767px) {

    /* --- Header --- */
    .site-header .wrap {
        height: 60px;
    }

    .logo {
        font-size: 20px;
    }

    .main-nav {
        display: none;
        flex-direction: column;
        align-items: stretch;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--bg);
        border-bottom: 1px solid var(--border);
        padding: 12px 0;
        box-shadow: var(--shadow-lg);
    }

    .main-nav.open {
        display: flex;
    }

    .main-nav a {
        padding: 12px 24px;
        font-size: 16px;
        border-radius: 0;
        text-align: left;
    }

    .menu-toggle {
        display: block;
    }

    .header-phone {
        display: none;
    }

    /* --- Hero --- */
    .hero {
        padding: 48px 0 40px;
    }

    .hero h1 {
        font-size: 30px;
        letter-spacing: -1px;
    }

    .hero .hero-desc {
        font-size: 16px;
        margin-bottom: 28px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
        padding: 0 24px;
    }

    .hero-btn {
        width: 100%;
        font-size: 16px;
        padding: 12px 24px;
    }

    /* --- Sections --- */
    .section {
        padding: 40px 0;
    }

    .section-title {
        font-size: 24px;
        margin-bottom: 12px;
    }

    .section-desc {
        font-size: 16px;
        margin-bottom: 24px;
    }

    /* --- Service --- */
    .service-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .service-item {
        padding: 24px 20px;
    }

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

    .service-item p {
        font-size: 16px;
    }

    /* --- About --- */
    .about-text {
        font-size: 16px;
        line-height: 1.8;
        margin-bottom: 32px;
    }

    .about-text h2 {
        font-size: 19px;
    }

    .about-text h3 {
        font-size: 18px;
    }

    .about-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
        padding-top: 24px;
        margin-top: 24px;
    }

    .stat-item strong {
        font-size: 32px;
    }

    .stat-item p {
        font-size: 16px;
    }

    /* --- Article Grid (Homepage) → 手机左图右字 --- */
    .article-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .article-card {
        flex-direction: row;
        border-radius: 10px;
    }

    .card-thumb {
        flex-shrink: 0;
        width: 120px;
        border-bottom: none;
    }

    .card-thumb img {
        width: 100%;
        height: 100%;
        border-radius: 10px 0 0 10px;
    }

    .card-body {
        padding: 12px 14px;
        justify-content: center;
    }

    .card-body h3 {
        font-size: 18px;
        margin-bottom: 4px;
        line-height: 1.4;
    }

    .card-body p {
        display: none;
    }

    .card-body time {
        font-size: 16px;
    }

    /* --- Advantage --- */
    .advantage-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .advantage-item {
        padding: 28px 24px;
    }

    .adv-num {
        font-size: 48px;
        margin-bottom: 16px;
    }

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

    .advantage-item p {
        font-size: 16px;
    }

    /* --- Team --- */
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .team-item {
        padding: 20px 12px;
    }

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

    .team-item p {
        font-size: 16px;
    }

    /* --- Category Grid --- */
    .cat-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        overflow: hidden;
    }

    .cat-card {
        padding: 24px 16px;
    }

    .cat-card strong {
        font-size: 18px;
        margin-bottom: 8px;
    }

    .cat-card p {
        font-size: 16px;
    }

    /* --- FAQ --- */
    .faq-list summary {
        padding: 14px 18px;
        padding-right: 40px;
        font-size: 16px;
    }

    .faq-list summary::after {
        right: 16px;
        font-size: 18px;
    }

    .faq-answer {
        padding: 14px 18px;
        font-size: 16px;
    }

    .faq-container {
        padding: 0 16px;
    }

    .faq-section {
        padding: 40px 0;
    }

    .cat-grid.partner-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .partner-item {
        min-height: 60px;
        padding: 12px;
    }

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

    .service-grid-2col {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    /* --- Breadcrumb --- */
    .breadcrumb {
        padding: 12px 0;
        font-size: 16px;
    }

    .breadcrumb .sep {
        margin: 0 8px;
    }

    /* --- List Page --- */
    .page-title {
        font-size: 24px;
        margin-top: 20px;
        margin-bottom: 12px;
    }

    .page-desc {
        font-size: 16px;
        margin-bottom: 20px;
    }

    .list-item {
        flex-direction: row;
        gap: 14px;
        padding: 16px 0;
    }

    .list-thumb {
        align-self: flex-start;
        border-radius: 6px;
    }

    .list-thumb img {
        width: 110px;
        height: 74px;
        border-radius: 6px;
    }

    .list-body h2 {
        font-size: 18px;
        margin-bottom: 4px;
        line-height: 1.4;
    }

    .list-body p {
        font-size: 16px;
        margin-bottom: 4px;
        -webkit-line-clamp: 2;
        line-clamp: 2;
    }

    .item-meta {
        font-size: 16px;
        gap: 12px;
    }

    /* --- Product List --- */
    .product-list {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .product-list .product-item {
        padding: 20px;
    }

    .product-list .product-item h2 {
        font-size: 18px;
        margin-bottom: 10px;
    }

    .product-list .article-body {
        font-size: 16px;
    }

    /* --- Service Grid --- */
    .service-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .service-grid .service-item {
        padding: 24px 20px;
    }

    .service-grid .service-item h3 {
        font-size: 18px;
        margin-bottom: 10px;
    }

    .service-grid .service-item p {
        font-size: 16px;
        line-height: 1.7;
    }

    /* --- Article Detail --- */
    .content-wrap {
        padding-top: 20px;
        padding-bottom: 24px;
    }

    .article-detail h1 {
        font-size: 24px;
        margin-bottom: 14px;
        letter-spacing: -0.5px;
    }

    .article-meta {
        font-size: 16px;
        flex-wrap: wrap;
        gap: 6px 16px;
        margin-bottom: 24px;
        padding-bottom: 14px;
    }

    .article-meta>* {
        min-width: calc(50% - 8px);
    }

    .article-body {
        font-size: 16px;
        line-height: 1.8;
    }

    .article-body h2 {
        font-size: 20px;
        margin: 24px 0 12px;
    }

    .article-body h3 {
        font-size: 18px;
        margin: 20px 0 10px;
    }

    .article-body h4 {
        font-size: 17px;
        margin: 18px 0 8px;
    }

    .article-body blockquote {
        font-size: 16px;
        padding: 14px 18px;
        margin: 24px 0;
    }

    .article-body ul,
    .article-body ol {
        margin: 16px 0 16px 20px;
    }

    .article-body table {
        margin: 24px 0;
    }

    .article-body th,
    .article-body td {
        padding: 10px 12px;
        font-size: 16px;
    }

    .source-link {
        font-size: 16px;
        margin-top: 32px;
    }

    /* --- Prev/Next --- */
    .prev-next {
        flex-direction: column;
        gap: 12px;
        margin: 24px 0;
        padding: 20px 0;
    }

    .prev-next .prev,
    .prev-next .next {
        font-size: 16px;
        padding: 14px 18px;
    }

    .prev-next .next {
        text-align: left;
    }

    /* --- Related --- */
    .related-articles {
        margin-top: 40px;
    }

    .related-articles h2 {
        font-size: 20px;
        margin-bottom: 16px;
        padding-bottom: 12px;
    }

    .related-articles li a {
        font-size: 16px;
    }

    .related-articles time {
        font-size: 16px;
        margin-left: 16px;
    }

    /* --- Contact --- */
    .contact-info {
        padding: 20px;
        border-radius: 10px;
    }

    /* --- Footer --- */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
        padding-top: 32px;
        padding-bottom: 20px;
    }

    .footer-brand {
        font-size: 18px !important;
    }

    .footer-about strong,
    .footer-nav strong,
    .footer-contact strong {
        font-size: 16px;
        margin-bottom: 12px;
    }

    .footer-about p {
        font-size: 16px;
    }

    .footer-nav a {
        font-size: 16px;
        padding: 10px 0;
        margin-bottom: 0;
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }

    .footer-nav a:last-child {
        border-bottom: none;
    }

    .footer-contact p {
        font-size: 16px;
        padding: 10px 0;
        margin-bottom: 0;
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }

    .footer-contact p:last-child {
        border-bottom: none;
    }

    .footer-bottom {
        font-size: 16px;
    }

    /* --- Pagination --- */
    .pagination {
        margin: 40px 0 20px;
        gap: 6px;
    }

    .pagination a,
    .pagination .current {
        min-width: 38px;
        height: 38px;
        padding: 0 12px;
        font-size: 16px;
    }

    /* --- Empty / Error --- */
    .empty-tip {
        font-size: 16px;
        padding: 60px 0;
    }

    .error-code {
        font-size: 100px;
        letter-spacing: -2px;
    }

    .error-page h1 {
        font-size: 22px;
    }

    .error-page p {
        font-size: 16px;
    }

    .error-page {
        padding: 80px 24px;
    }
}

/* === Reduced Motion (a11y) === */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* === Print === */
@media print {

    .site-header,
    .site-footer,
    .menu-toggle,
    .hero-btn,
    .hero-btn-outline,
    .pagination,
    .prev-next,
    .related-articles,
    .section-more,
    .about-stats,
    .advantage-section,
    .faq-section {
        display: none;
    }

    .hero {
        background: none;
        color: var(--text);
        padding: 20px 0;
    }

    body {
        font-size: 12pt;
        line-height: 1.6;
    }

    a {
        color: var(--text);
    }

    .article-body {
        font-size: 12pt;
    }
}