/* css/style.css - 全站样式 */
:root {
    --primary: #1a2a4a;
    --primary-dark: #0f1a30;
    --gold: #c9a84c;
    --gold-light: #e0c878;
    --white: #ffffff;
    --light-bg: #f8f9fb;
    --dark-text: #1a2a4a;
    --gray-text: #6b7280;
    --border: #e5e7eb;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-hover: 0 8px 30px rgba(0,0,0,0.15);
    --transition: all 0.3s ease;
    --radius: 8px;
    --radius-lg: 12px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: var(--dark-text);
    line-height: 1.6;
    background: var(--white);
    font-size: 16px;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; }

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

/* 按钮 */
.btn {
    display: inline-block;
    padding: 10px 24px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    text-align: center;
    line-height: 1.4;
}
.btn-lg { padding: 14px 36px; font-size: 16px; }
.btn-sm { padding: 6px 16px; font-size: 13px; }
.btn-block { display: block; width: 100%; }
.btn-gold {
    background: var(--gold);
    color: var(--white);
    border-color: var(--gold);
}
.btn-gold:hover {
    background: #b89435;
    border-color: #b89435;
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(201,168,76,0.4);
}
.btn-primary {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}
.btn-primary:hover {
    background: #253a60;
    border-color: #253a60;
    color: var(--white);
    transform: translateY(-2px);
}
.btn-outline-primary {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}
.btn-outline-primary:hover {
    background: var(--primary);
    color: var(--white);
}
.btn-outline-light {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}
.btn-outline-light:hover {
    background: var(--white);
    color: var(--primary);
}
.btn-outline-dark {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}
.btn-outline-dark:hover {
    background: var(--primary);
    color: var(--white);
}
.btn-header {
    padding: 8px 16px;
    font-size: 13px;
}

/* 头部 */
.site-header {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}
.header-top {
    background: var(--white);
}
.header-top-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    flex-wrap: wrap;
    gap: 10px;
}
.logo a {
    display: flex;
    align-items: center;
    gap: 8px;
}
.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--primary);
    color: var(--gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}
.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 1px;
}
.logo-accent {
    color: var(--gold);
    font-size: 16px;
    font-weight: 500;
}

/* 导航 */
.main-nav .nav-list {
    display: flex;
    align-items: center;
    gap: 5px;
}
.main-nav .nav-list > li {
    position: relative;
}
.main-nav .nav-list > li > a {
    display: block;
    padding: 8px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--dark-text);
    border-radius: var(--radius);
    transition: var(--transition);
    white-space: nowrap;
}
.main-nav .nav-list > li > a:hover,
.main-nav .nav-list > li > a.active {
    color: var(--gold);
    background: rgba(201,168,76,0.08);
}
.main-nav .nav-list > li > a i {
    font-size: 12px;
    margin-left: 2px;
}

/* 下拉菜单 */
.has-dropdown .dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    box-shadow: var(--shadow-hover);
    border-radius: var(--radius);
    min-width: 200px;
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 100;
}
.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.dropdown-menu li a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 14px;
    color: var(--dark-text);
    transition: var(--transition);
}
.dropdown-menu li a:hover {
    background: var(--light-bg);
    color: var(--gold);
}
.dropdown-menu li a i {
    width: 20px;
    text-align: center;
    color: var(--gold);
}

/* 头部按钮区域 */
.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}
.header-qq {
    font-size: 12px;
    color: var(--gray-text);
    margin-top: 4px;
    width: 100%;
    text-align: right;
}
.header-qq i {
    color: #12b7f5;
}

/* 移动端切换按钮 */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}
.mobile-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* 移动端导航 */
.mobile-nav {
    display: none;
    background: var(--white);
    border-top: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}
.mobile-nav.active {
    max-height: 600px;
}
.mobile-nav ul {
    padding: 10px 20px;
}
.mobile-nav ul li a {
    display: block;
    padding: 12px 0;
    font-size: 15px;
    color: var(--dark-text);
    border-bottom: 1px solid var(--light-bg);
}
.mobile-submenu {
    padding-left: 20px !important;
    display: none;
}
.mobile-submenu.show {
    display: block;
}
.mobile-submenu li a {
    font-size: 14px;
    color: var(--gray-text);
    padding: 8px 0 !important;
    border-bottom: none !important;
}
.mobile-nav-buttons {
    padding: 15px 0 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.mobile-qq {
    text-align: center;
    font-size: 13px;
    color: var(--gray-text);
    margin-top: 5px;
}
.mobile-qq i { color: #12b7f5; }

/* Hero区域 */
.hero {
    background: linear-gradient(135deg, #1a2a4a 0%, #0f1a30 50%, #1a2a4a 100%);
    color: var(--white);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}
.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center, rgba(201,168,76,0.15) 0%, transparent 70%);
}
.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}
.hero-content h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: 2px;
}
.hero-content p {
    font-size: 18px;
    color: rgba(255,255,255,0.85);
    margin-bottom: 30px;
}
.hero-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}
.stat-item {
    text-align: center;
}
.stat-number {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: var(--gold);
}
.stat-label {
    font-size: 13px;
    color: rgba(255,255,255,0.7);
}

/* 区块 */
.section {
    padding: 60px 0;
}
.section-title {
    font-size: 30px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 10px;
    color: var(--primary);
}
.section-subtitle {
    text-align: center;
    color: var(--gray-text);
    margin-bottom: 35px;
    font-size: 16px;
}

/* 优势卡片 */
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}
.advantage-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 30px 25px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
}
.advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--gold);
}
.advantage-icon {
    width: 60px;
    height: 60px;
    background: rgba(201,168,76,0.1);
    color: var(--gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    margin: 0 auto 15px;
}
.advantage-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--primary);
}
.advantage-card p {
    font-size: 14px;
    color: var(--gray-text);
}

/* 产品选项卡 */
.product-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 30px;
}
.tab-btn {
    padding: 10px 20px;
    border: 2px solid var(--border);
    background: var(--white);
    border-radius: 30px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-text);
    transition: var(--transition);
}
.tab-btn:hover {
    border-color: var(--gold);
    color: var(--gold);
}
.tab-btn.active {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

/* 产品卡片 */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}
.product-card {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    background: var(--white);
    transition: var(--transition);
    box-shadow: var(--shadow);
}
.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--gold);
}
.product-card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}
.product-icon {
    font-size: 28px;
    color: var(--gold);
}
.product-card-header h4 {
    font-size: 15px;
    color: var(--primary);
    font-weight: 600;
}
.product-card-body {
    margin-bottom: 15px;
}
.product-spec {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    border-bottom: 1px solid var(--light-bg);
    font-size: 13px;
}
.product-spec span {
    color: var(--gray-text);
}
.product-spec strong {
    color: var(--primary);
}

/* 新闻卡片 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 25px;
}
.news-card {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--white);
    box-shadow: var(--shadow);
    transition: var(--transition);
}
.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}
.news-image {
    height: 200px;
    background-size: cover;
    background-position: center;
    background-color: #e8e8e8;
}
.news-image-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 50px;
    color: #ccc;
    background: var(--light-bg);
}
.news-content {
    padding: 20px;
}
.news-date {
    font-size: 12px;
    color: var(--gray-text);
    display: block;
    margin-bottom: 8px;
}
.news-content h3 {
    font-size: 16px;
    margin-bottom: 8px;
}
.news-content h3 a {
    color: var(--primary);
    transition: var(--transition);
}
.news-content h3 a:hover {
    color: var(--gold);
}
.news-content p {
    font-size: 13px;
    color: var(--gray-text);
    margin-bottom: 10px;
}
.read-more {
    font-size: 13px;
    color: var(--gold);
    font-weight: 600;
}

/* CTA区块 */
.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    text-align: center;
}
.cta-section h2 {
    font-size: 28px;
    margin-bottom: 10px;
}
.cta-section p {
    color: rgba(255,255,255,0.8);
    margin-bottom: 25px;
}

/* 底部 */
.site-footer {
    background: var(--white);
    border-top: 3px solid var(--gold);
    padding: 50px 0 20px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 30px;
    margin-bottom: 30px;
}
.footer-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--gold);
    display: inline-block;
}
.footer-about p {
    font-size: 13px;
    color: var(--gray-text);
    line-height: 1.8;
    margin-bottom: 15px;
}
.footer-social {
    display: flex;
    gap: 10px;
}
.footer-social a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--light-bg);
    color: var(--gray-text);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}
.footer-social a:hover {
    background: var(--gold);
    color: var(--white);
    transform: translateY(-3px);
}
.footer-links li {
    margin-bottom: 8px;
}
.footer-links a {
    font-size: 13px;
    color: var(--gray-text);
    transition: var(--transition);
}
.footer-links a:hover {
    color: var(--gold);
    padding-left: 5px;
}
.footer-links a i {
    font-size: 10px;
    margin-right: 5px;
    color: var(--gold);
}
.footer-contact li {
    font-size: 13px;
    color: var(--gray-text);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.footer-contact li i {
    color: var(--gold);
    width: 18px;
}
.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 20px;
    text-align: center;
    font-size: 12px;
    color: var(--gray-text);
}
.footer-links-small a {
    color: var(--gray-text);
    transition: var(--transition);
}
.footer-links-small a:hover {
    color: var(--gold);
}

/* 移动端底部固定按钮 */
.mobile-fixed-buttons {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 999;
    background: var(--white);
    box-shadow: 0 -2px 15px rgba(0,0,0,0.1);
    padding: 8px 10px;
    gap: 8px;
}
.mobile-fixed-btn {
    flex: 1;
    text-align: center;
    padding: 10px 0;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
}
.mobile-fixed-open {
    background: var(--gold);
    color: var(--white);
}
.mobile-fixed-admin {
    background: var(--primary);
    color: var(--white);
}

/* 页面横幅 */
.page-banner {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 50px 0;
    text-align: center;
}
.page-banner h1 {
    font-size: 32px;
    margin-bottom: 8px;
}
.page-banner p {
    color: rgba(255,255,255,0.7);
    font-size: 15px;
}

/* 通用内容区 */
.content-section {
    padding: 50px 0;
}
.content-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow);
    margin-bottom: 25px;
}
.text-center { text-align: center; }
.mt-3 { margin-top: 20px; }
.mt-4 { margin-top: 30px; }
.mb-3 { margin-bottom: 20px; }

/* 面包屑 */
.breadcrumb {
    font-size: 13px;
    color: var(--gray-text);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 5px;
    flex-wrap: wrap;
}
.breadcrumb a { color: var(--gray-text); }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb span { color: var(--primary); }

/* 联系表单 */
.contact-form-group {
    margin-bottom: 18px;
}
.contact-form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--primary);
}
.contact-form-group input,
.contact-form-group textarea,
.contact-form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    transition: var(--transition);
    font-family: inherit;
}
.contact-form-group input:focus,
.contact-form-group textarea:focus {
    outline: none;
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(201,168,76,0.15);
}
.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 15px 0;
    border-bottom: 1px solid var(--light-bg);
}
.contact-info-item i {
    width: 40px;
    height: 40px;
    background: rgba(201,168,76,0.1);
    color: var(--gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}
.contact-info-item h4 {
    font-size: 15px;
    margin-bottom: 4px;
}
.contact-info-item p {
    font-size: 13px;
    color: var(--gray-text);
}

/* 响应式 */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .container { padding: 0 15px; }
    
    .main-nav { display: none; }
    .mobile-toggle { display: flex; }
    .mobile-nav { display: block; }
    
    .header-actions .btn-header {
        display: none;
    }
    .header-actions .header-qq {
        display: none;
    }
    .header-top-inner {
        padding: 10px 15px;
    }
    
    .hero-content h1 { font-size: 28px; }
    .hero-content p { font-size: 15px; }
    .hero-stats { gap: 20px; }
    .stat-number { font-size: 22px; }
    
    .section { padding: 40px 0; }
    .section-title { font-size: 24px; }
    
    .product-grid { grid-template-columns: 1fr 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .advantage-grid { grid-template-columns: 1fr 1fr; }
    
    .footer-grid { grid-template-columns: 1fr; gap: 20px; }
    
    .mobile-fixed-buttons { display: flex; }
    body { padding-bottom: 55px; }
    
    .page-banner h1 { font-size: 24px; }
    .page-banner { padding: 35px 0; }
    
    .content-card { padding: 20px; }
}

@media (max-width: 480px) {
    .product-grid { grid-template-columns: 1fr; }
    .advantage-grid { grid-template-columns: 1fr; }
    .hero-buttons { flex-direction: column; }
    .hero-content h1 { font-size: 24px; }
    .btn-lg { padding: 10px 24px; font-size: 14px; }
}

/* 404页面 */
.error-page {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 50px 20px;
}
.error-code {
    font-size: 100px;
    font-weight: 700;
    color: var(--gold);
    line-height: 1;
    margin-bottom: 15px;
}
.error-title {
    font-size: 28px;
    margin-bottom: 12px;
    color: var(--primary);
}
.error-desc {
    font-size: 15px;
    color: var(--gray-text);
    margin-bottom: 25px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* 文章详情 */
.article-detail-header {
    margin-bottom: 25px;
}
.article-detail-header h1 {
    font-size: 26px;
    color: var(--primary);
    margin-bottom: 12px;
    line-height: 1.4;
}
.article-meta {
    font-size: 13px;
    color: var(--gray-text);
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}
.article-content {
    font-size: 15px;
    line-height: 1.9;
    color: #333;
}
.article-content h3 {
    font-size: 18px;
    color: var(--primary);
    margin: 20px 0 10px;
}
.article-content p {
    margin-bottom: 12px;
}
.article-content ul {
    padding-left: 20px;
    margin-bottom: 12px;
}
.article-content ul li {
    list-style: disc;
    margin-bottom: 5px;
}

/* 产品详情 */
.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}
@media (max-width: 768px) {
    .product-detail-grid { grid-template-columns: 1fr; }
}
.product-detail-spec {
    background: var(--light-bg);
    border-radius: var(--radius);
    padding: 20px;
}
.product-detail-spec table {
    width: 100%;
    font-size: 14px;
}
.product-detail-spec table td {
    padding: 10px 5px;
    border-bottom: 1px solid var(--border);
}
.product-detail-spec table td:first-child {
    color: var(--gray-text);
    width: 40%;
}
.product-detail-spec table td:last-child {
    font-weight: 600;
    color: var(--primary);
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 5px;
    margin-top: 25px;
    flex-wrap: wrap;
}
.pagination a, .pagination span {
    padding: 8px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    color: var(--gray-text);
    transition: var(--transition);
}
.pagination a:hover {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}
.pagination .current {
    background: var(--gold);
    color: var(--white);
    border-color: var(--gold);
}