/* ==========================================================================
   前台公共样式
   ========================================================================== */

/* CSS Variables - 仅保留特有变量，通用变量使用 variables.css */
:root {
    --primary-color: var(--color-info, #1890ff);
    --primary-hover: var(--color-info, #40a9ff);
    --primary-active: var(--color-info-dark, #096dd9);
    --text-color: var(--text-primary, #333);
    --text-muted: var(--text-secondary, #999);
    --border-color: var(--border-base, #e8e8e8);
    --bg-light: var(--bg-hover, #f5f7fa);
    --bg-white: var(--bg-card, #fff);
    --transition: var(--transition-base);
}

/* Reset 已统一到 common/reset.css */

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif;
    font-size: var(--font-base, 14px);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-light);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
    background: transparent;
    box-shadow: none;
}

a:hover {
    color: var(--primary-hover);
    background: transparent;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: var(--z-dropdown, 1000);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: var(--font-xxl, 20px);
    font-weight: 600;
    color: var(--text-color);
}

.logo-img {
    height: 36px;
    width: auto;
}

.logo-text {
    color: var(--text-color);
}

.header-nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-link {
    color: var(--text-color);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg, 20px);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    gap: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-color);
    transition: var(--transition-base);
    border-radius: 1px;
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.header-contact {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    font-size: var(--font-base, 14px);
}

/* ==========================================================================
   Buttons - 使用公共组件 button.css 统一样式
   ========================================================================== */

/* ==========================================================================
   Breadcrumb
   ========================================================================== */
.breadcrumb-wrapper {
    background: var(--bg-white);
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 10px;
    font-size: var(--font-base, 14px);
    color: var(--text-muted);
}

.breadcrumb-item:not(:last-child)::after {
    content: '/';
    margin-left: 10px;
    color: var(--border-color);
}

.breadcrumb-item.active {
    color: var(--text-color);
}

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

/* ==========================================================================
   Page Section
   ========================================================================== */
.page-section {
    padding: 40px 0 60px;
}

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

.page-title {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 10px;
}

.page-subtitle {
    font-size: var(--font-lg, 16px);
    color: var(--text-secondary);
}

/* ==========================================================================
   News List
   ========================================================================== */
.news-filter {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: var(--spacing-lg, 20px);
}

.filter-categories {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.filter-tag {
    padding: 6px 16px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    color: var(--text-secondary);
    font-size: var(--font-base, 14px);
    transition: var(--transition);
    background: transparent;
    box-shadow: none;
    text-decoration: none;
}

.filter-tag:hover,
.filter-tag.active {
    background: var(--primary-color);
    color: var(--text-inverse, #fff);
    border-color: var(--primary-color);
}

.search-form {
    display: flex;
    gap: var(--spacing-sm, 8px);
}

.search-input {
    padding: 8px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: var(--font-base, 14px);
    width: 240px;
    outline: none;
    transition: var(--transition);
}

.search-input:focus {
    border-color: var(--primary-color);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--spacing-xl, 24px);
}

.news-card {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.news-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.news-image {
    display: block;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: transparent;
    box-shadow: none;
    text-decoration: none;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.news-card:hover .news-image img {
    transform: scale(1.05);
}

.news-content {
    padding: var(--spacing-lg, 20px);
}

.news-badge {
    display: inline-block;
    padding: 2px 8px;
    background: var(--color-error, #ff4d4f);
    color: var(--text-inverse, #fff);
    border-radius: var(--radius-sm);
    font-size: var(--font-xs, 12px);
    margin-right: var(--spacing-sm, 8px);
}

.news-category {
    display: inline-block;
    padding: 2px 8px;
    background: var(--bg-light);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    font-size: var(--font-xs, 12px);
    margin-right: var(--spacing-sm, 8px);
}

.news-title {
    font-size: var(--font-xl, 18px);
    font-weight: 600;
    margin: 10px 0;
    line-height: 1.4;
}

.news-title a {
    color: var(--text-color);
}

.news-title a:hover {
    color: var(--primary-color);
}

.news-summary {
    color: var(--text-secondary);
    font-size: var(--font-base, 14px);
    line-height: 1.6;
    margin-bottom: var(--spacing-md, 16px);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-meta {
    display: flex;
    gap: var(--spacing-md, 16px);
    font-size: var(--font-sm, 13px);
    color: var(--text-muted);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs, 4px);
}

.section-more {
    text-align: center;
    margin-top: var(--spacing-xxl, 32px);
}

/* ==========================================================================
   News Detail
   ========================================================================== */
.news-detail {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    padding: 40px;
    box-shadow: var(--shadow-sm);
}

.news-header {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.news-cover {
    margin-bottom: 30px;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.news-cover img {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
}

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

.news-body .news-summary {
    font-size: var(--font-md, 15px);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl, 24px);
    padding: var(--spacing-md, 16px);
    background: var(--bg-light);
    border-radius: var(--radius-sm);
}

.news-body .news-content {
    min-height: 200px;
}

.news-body .news-content img {
    max-width: 100%;
    height: auto;
    margin: 16px 0;
    border-radius: var(--radius-sm);
}

.news-footer {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.product-footer {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.related-news {
    max-width: 800px;
    margin: 40px auto 0;
}

.section-title {
    font-size: var(--font-title, 24px);
    font-weight: 600;
    margin-bottom: var(--spacing-lg, 20px);
}

.related-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-base, 12px);
}

.related-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 18px;
    background: var(--bg-white);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    box-shadow: none;
    text-decoration: none;
}

.related-item:hover {
    background: var(--bg-light);
    box-shadow: var(--shadow-sm);
}

.related-title {
    color: var(--text-color);
    font-weight: 500;
}

.related-date {
    color: var(--text-muted);
    font-size: var(--font-sm, 13px);
}

/* ==========================================================================
   Product List
   ========================================================================== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-xl, 24px);
}

.product-card {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.product-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.product-link {
    display: block;
    padding: 30px 24px;
    text-align: center;
    color: var(--text-color);
    background: transparent;
    box-shadow: none;
    text-decoration: none;
}

.product-link:hover {
    background: var(--bg-light);
}

.product-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary, #667eea) 0%, var(--color-primary-light, #764ba2) 100%);
    color: var(--text-inverse, #fff);
}

.product-icon-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-full);
}

.product-icon-primary {
    background: linear-gradient(135deg, var(--color-primary, #667eea) 0%, var(--color-primary-light, #764ba2) 100%);
}

.product-icon-green {
    background: linear-gradient(135deg, var(--color-success, #11998e) 0%, var(--color-success, #38ef7d) 100%);
}

.product-icon-purple {
    background: linear-gradient(135deg, var(--color-primary-light, #9b59b6) 0%, var(--color-primary-light-dark, #8e44ad) 100%);
}

.product-icon-orange {
    background: linear-gradient(135deg, var(--color-primary-light, #f093fb) 0%, var(--color-error, #f5576c) 100%);
}

.product-icon-red {
    background: linear-gradient(135deg, var(--color-error, #eb3349) 0%, var(--color-error, #f45c43) 100%);
}

.product-icon-cyan {
    background: linear-gradient(135deg, var(--color-success, #43cea2) 0%, var(--color-info-dark, #185a9d) 100%);
}

.product-featured {
    margin-bottom: var(--spacing-lg, 20px);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.product-featured img {
    width: 100%;
    height: 160px;
    object-fit: cover;
}

.product-title {
    font-size: var(--font-xl, 18px);
    font-weight: 600;
    margin-bottom: 10px;
}

.product-desc {
    color: var(--text-secondary);
    font-size: var(--font-base, 14px);
    line-height: 1.6;
    margin-bottom: var(--spacing-md, 16px);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-action {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs, 4px);
    color: var(--primary-color);
    font-size: var(--font-base, 14px);
    font-weight: 500;
}

/* ==========================================================================
   Product Detail
   ========================================================================== */
.product-detail {
    max-width: 900px;
    margin: 0 auto;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    padding: 40px;
    box-shadow: var(--shadow-sm);
}

.product-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl, 24px);
    margin-bottom: 30px;
}

.product-icon-large {
    width: 96px;
    height: 96px;
    border-radius: var(--radius-xl, 16px);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.product-title-wrap {
    flex: 1;
}

.product-detail .product-title {
    font-size: 28px;
    margin-bottom: var(--spacing-base, 12px);
}

.product-featured-image {
    margin-bottom: 30px;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.product-featured-image img {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
}

.product-body {
    font-size: var(--font-lg, 16px);
    line-height: 1.8;
}

.product-body .product-content {
    min-height: 200px;
}

.product-body .product-content img {
    max-width: 100%;
    height: auto;
    margin: 16px 0;
    border-radius: var(--radius-sm);
}

.product-body .product-content.empty {
    color: var(--text-muted);
    text-align: center;
    padding: 40px 0;
}

.related-products {
    max-width: 900px;
    margin: 40px auto 0;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-lg, 20px);
}

.related-card {
    display: block;
    padding: var(--spacing-lg, 20px);
    background: var(--bg-white);
    border-radius: var(--radius-sm);
    text-align: center;
    transition: var(--transition);
    box-shadow: none;
    text-decoration: none;
}

.related-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.related-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 12px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    color: var(--primary-color);
}

.related-title {
    font-size: var(--font-lg, 16px);
    font-weight: 500;
    margin-bottom: var(--spacing-sm, 8px);
}

.related-desc {
    font-size: var(--font-sm, 13px);
    color: var(--text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ==========================================================================
   About Page
   ========================================================================== */
.about-hero {
    text-align: center;
    padding: 60px 0 40px;
}

.about-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: var(--spacing-md, 16px);
    background: linear-gradient(135deg, var(--color-primary, #667eea) 0%, var(--color-primary-light, #764ba2) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-description {
    font-size: var(--font-xl, 18px);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

.about-stats {
    margin: 40px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-xl, 24px);
}

.stat-item {
    text-align: center;
    padding: 30px 20px;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.stat-value {
    font-size: 36px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary, #667eea) 0%, var(--color-primary-light, #764ba2) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-secondary);
    margin-top: var(--spacing-sm, 8px);
}

.about-vision-mission {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-xl, 24px);
    margin: 60px 0;
}

.vision-card,
.mission-card,
.values-card {
    text-align: center;
    padding: 30px;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.vision-icon,
.mission-icon,
.values-icon {
    margin: 0 auto 20px;
    width: 64px;
    height: 64px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary, #667eea) 0%, var(--color-primary-light, #764ba2) 100%);
    color: var(--text-inverse, #fff);
}

.vision-title,
.mission-title,
.values-title {
    font-size: var(--font-xxl, 20px);
    font-weight: 600;
    margin-bottom: var(--spacing-base, 12px);
}

.vision-text,
.mission-text {
    color: var(--text-secondary);
    line-height: 1.8;
}

.values-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.value-tag {
    padding: 6px 16px;
    background: var(--bg-light);
    border-radius: 20px;
    color: var(--text-color);
    font-size: var(--font-base, 14px);
}

.about-team {
    margin: 60px 0;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-xl, 24px);
}

.team-card {
    text-align: center;
    padding: 30px;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.team-avatar {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    border-radius: var(--radius-full);
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}

.team-name {
    font-size: var(--font-xl, 18px);
    font-weight: 600;
    margin-bottom: var(--spacing-xs, 4px);
}

.team-title {
    color: var(--primary-color);
    font-size: var(--font-base, 14px);
    margin-bottom: var(--spacing-base, 12px);
}

.team-desc {
    color: var(--text-secondary);
    font-size: var(--font-base, 14px);
    line-height: 1.6;
}

/* 加入我们 - 招聘 */
.about-recruitment {
    margin: 60px 0;
}

.about-recruitment .section-title {
    text-align: center;
    margin-bottom: var(--spacing-base, 12px);
}

.recruitment-tip {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl, 24px);
}

.recruitment-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl, 24px);
}

.recruitment-item {
    padding: var(--spacing-xl, 24px);
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border-top: 3px solid var(--color-primary, #667eea);
    display: flex;
    flex-direction: column;
}

.recruitment-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-sm, 8px);
    margin-bottom: var(--spacing-base, 12px);
}

.recruitment-title {
    font-size: var(--font-lg, 16px);
    font-weight: 600;
    color: var(--text-color);
}

.recruitment-type {
    flex-shrink: 0;
    padding: 4px 12px;
    font-size: var(--font-sm, 13px);
    color: var(--color-primary, #667eea);
    background: var(--bg-light);
    border-radius: 20px;
}

.recruitment-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md, 16px);
    margin-bottom: var(--spacing-base, 12px);
}

.recruitment-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: var(--text-muted);
    font-size: var(--font-sm, 13px);
}

.recruitment-desc {
    color: var(--text-secondary);
    font-size: var(--font-base, 14px);
    line-height: 1.7;
    margin-top: auto;
}

.recruitment-contact {
    text-align: center;
    margin-top: var(--spacing-xl, 24px);
    color: var(--text-secondary);
}

.recruitment-email {
    color: var(--color-primary, #667eea);
    font-weight: 600;
}

.recruitment-email:hover {
    text-decoration: underline;
}

.about-contact {
    margin: 60px 0;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-xl, 24px);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md, 16px);
    padding: var(--spacing-xl, 24px);
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.contact-item svg {
    color: var(--primary-color);
    flex-shrink: 0;
}

.contact-detail {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: var(--font-sm, 13px);
    color: var(--text-muted);
}

.contact-value {
    font-weight: 500;
    color: var(--text-color);
}

/* ==========================================================================
   Pagination
   ========================================================================== */
.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 40px;
    flex-wrap: wrap;
    gap: var(--spacing-md, 16px);
}

.pagination-info {
    color: var(--text-secondary);
    font-size: var(--font-base, 14px);
}

.pagination-controls {
    display: flex;
    gap: var(--spacing-sm, 8px);
}

.page-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: var(--font-base, 14px);
    transition: var(--transition);
    background: transparent;
    box-shadow: none;
    text-decoration: none;
}

.page-btn:hover,
.page-btn.active {
    background: var(--primary-color);
    color: var(--text-inverse, #fff);
    border-color: var(--primary-color);
}

/* ==========================================================================
   Empty State
   ========================================================================== */
.empty-state {
    text-align: center;
    padding: 80px 0;
    color: var(--text-muted);
}

.empty-state p {
    margin-top: var(--spacing-md, 16px);
    font-size: var(--font-lg, 16px);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    background: var(--text-primary, #1f2937);
    color: var(--text-secondary, #9ca3af);
    padding: 60px 0 20px;
    margin-top: 60px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-title {
    color: var(--text-inverse, #fff);
    font-size: var(--font-xl, 18px);
    margin-bottom: var(--spacing-md, 16px);
}

.footer-desc {
    line-height: 1.8;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--text-secondary, #9ca3af);
    transition: var(--transition);
    background: transparent;
    box-shadow: none;
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--text-inverse, #fff);
    background: transparent;
}

.footer-contact {
    list-style: none;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm, 8px);
    margin-bottom: var(--spacing-base, 12px);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--text-regular, #374151);
    font-size: var(--font-base, 14px);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 768px) {
    .header-container {
        height: auto;
        padding: 16px 0;
        flex-wrap: wrap;
        gap: var(--spacing-md, 16px);
    }
    
    .header-nav {
        order: 3;
        width: 100%;
        justify-content: center;
    }
    
    .nav-list {
        gap: var(--spacing-xl, 24px);
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .header-contact {
        display: none;
    }
    
    .page-title {
        font-size: var(--font-title, 24px);
    }
    
    .page-subtitle {
        font-size: var(--font-base, 14px);
    }
    
    .news-filter {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-input {
        width: 100%;
    }
    
    .news-grid,
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .news-detail,
    .product-detail {
        padding: var(--spacing-xl, 24px);
    }
    
    .product-header {
        flex-direction: column;
        text-align: center;
    }
    
    .about-hero {
        padding: 40px 0 24px;
    }
    
    .about-title {
        font-size: 28px;
    }
    
    .stats-grid,
    .about-vision-mission,
    .team-grid,
    .recruitment-list {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pagination {
        flex-direction: column;
    }
}

@media (max-width: 600px) {
    .header-container {
        height: auto;
        padding: 12px 16px;
        flex-wrap: wrap;
    }
    
    .mobile-menu-btn {
        display: flex;
        order: 3;
        margin-left: auto;
    }
    
    .header-nav {
        display: none;
        order: 4;
        width: 100%;
        flex-direction: column;
        gap: 0;
        padding: 16px 0;
        border-top: 1px solid var(--border-color);
    }
    
    .header-nav.active {
        display: flex;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 0;
        width: 100%;
    }
    
    .nav-list li {
        width: 100%;
    }
    
    .nav-link {
        display: block;
        padding: 12px 16px;
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-list li:last-child .nav-link {
        border-bottom: none;
    }
    
    .header-right {
        order: 2;
    }
}

@media (max-width: 480px) {
    .stats-grid,
    .about-vision-mission,
    .team-grid,
    .recruitment-list {
        grid-template-columns: 1fr;
    }
}


/* ===== 可访问性：焦点高亮（仅表单控件保留，按钮/图标按钮统一不画方框） ===== */
input[type=text]:focus-visible,
input[type=password]:focus-visible,
input[type=email]:focus-visible,
input[type=tel]:focus-visible,
input[type=number]:focus-visible,
input[type=search]:focus-visible,
input[type=url]:focus-visible,
input[type=date]:focus-visible,
input[type=time]:focus-visible,
input[type=datetime-local]:focus-visible,
input[type=month]:focus-visible,
input[type=week]:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 2px solid var(--color-primary, #667eea);
    outline-offset: 2px;
}

/* 所有按钮、a 、tabindex 元素、aria role=button/tab —— 一律去掉焦点框（用户要求无外边框） */
button:focus-visible,
button:focus,
a:focus,
a:focus-visible,
li:focus,
li:focus-visible,
[tabindex]:focus,
[tabindex]:focus-visible,
[role="button"]:focus,
[role="button"]:focus-visible,
[role="tab"]:focus,
[role="tab"]:focus-visible {
    outline: none !important;
    box-shadow: none !important;
    border: none;
}