/* =========================================
   株洲贝斯特硬质合金有限公司 - 重构版样式
   工业厚重感设计风格
   ========================================= */

/* CSS 变量 */
:root {
    --color-primary: #c45c1a;
    --color-primary-dark: #a34915;
    --color-primary-light: #e87e3a;
    --color-secondary: #d4af37;
    --color-bg-dark: #0d0d0d;
    --color-bg-darker: #080808;
    --color-bg-card: #1a1a1a;
    --color-bg-card-hover: #222222;
    --color-bg-section: #111111;
    --color-text: #e0e0e0;
    --color-text-muted: #888888;
    --color-text-light: #ffffff;
    --color-border: #2a2a2a;
    --color-border-light: #333333;
    --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.5);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg-dark);
    color: var(--color-text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

a {
    color: var(--color-primary-light);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--color-secondary);
}

ul, ol {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: #fff;
    box-shadow: 0 4px 15px rgba(196, 92, 26, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(196, 92, 26, 0.4);
}

.btn-light {
    background: rgba(255,255,255,0.1);
    color: #fff;
    border: 1px solid rgba(255,255,255,0.2);
}

.btn-light:hover {
    background: rgba(255,255,255,0.2);
    color: #fff;
}

.btn-outline {
    background: transparent;
    color: var(--color-primary-light);
    border: 1px solid var(--color-primary);
}

.btn-outline:hover {
    background: var(--color-primary);
    color: #fff;
}

.btn-lg {
    padding: 14px 36px;
    font-size: 1.05rem;
}

/* 顶部信息栏 */
.top-bar {
    background: var(--color-bg-darker);
    border-bottom: 1px solid var(--color-border);
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.top-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
}

.top-bar-left span,
.top-bar-right span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-right: 24px;
}

.top-bar i {
    color: var(--color-primary);
    font-size: 0.8rem;
}

/* 主导航 */
.main-header {
    background: rgba(13, 13, 13, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.main-header.scrolled {
    box-shadow: 0 4px 20px rgba(0,0,0,0.5);
    border-bottom-color: var(--color-border-light);
}

.main-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--color-text-light);
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: #fff;
    flex-shrink: 0;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-main {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-text-light);
    letter-spacing: 1px;
}

.logo-sub {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--color-primary-light);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-menu > li {
    position: relative;
}

.nav-menu > li > a {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 10px 16px;
    color: var(--color-text);
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-menu > li > a:hover,
.nav-menu > li > a.active {
    color: var(--color-primary-light);
    background: rgba(196, 92, 26, 0.08);
}

.nav-menu .fa-chevron-down {
    font-size: 0.65rem;
    transition: var(--transition);
}

.dropdown:hover .fa-chevron-down {
    transform: rotate(180deg);
}

/* 下拉菜单 */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 8px 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
    z-index: 100;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li a {
    display: block;
    padding: 10px 20px;
    color: var(--color-text);
    font-size: 0.9rem;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.dropdown-menu li a:hover {
    color: var(--color-primary-light);
    background: rgba(196, 92, 26, 0.08);
    border-left-color: var(--color-primary);
    padding-left: 24px;
}

/* 移动端菜单按钮 */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}

/* 面包屑导航 */
.breadcrumb-nav {
    background: var(--color-bg-darker);
    border-bottom: 1px solid var(--color-border);
    padding: 12px 0;
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.85rem;
}

.breadcrumb li {
    display: flex;
    align-items: center;
    gap: 8px;
}

.breadcrumb li:not(:last-child)::after {
    content: '/';
    color: var(--color-text-muted);
}

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

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

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

/* 幻灯片 */
.hero-slider {
    position: relative;
    height: 600px;
    overflow: hidden;
    background: var(--color-bg-darker);
}

.hero-slide {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    opacity: 0;
    transition: opacity 1s ease;
    background: linear-gradient(135deg, rgba(13,13,13,0.95), rgba(13,13,13,0.8));
}

.hero-slide.active {
    opacity: 1;
}

.hero-slide-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #1a0a00 0%, #0d0d0d 50%, #001a1a 100%);
    z-index: 0;
}

.hero-slide-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23222' fill-opacity='0.4'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.3;
}

.hero-slide-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
}

.hero-slide-content h1 {
    font-size: 3.2rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--color-text-light);
    text-shadow: 0 2px 20px rgba(0,0,0,0.5);
}

.hero-slide-content h1 span {
    color: var(--color-primary-light);
}

.hero-slide-content p {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    margin-bottom: 36px;
    line-height: 1.6;
}

.hero-slider-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.hero-slider-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
}

.hero-slider-dot.active {
    background: var(--color-primary);
    border-color: rgba(255,255,255,0.3);
    transform: scale(1.3);
}

/* 区块标题 */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--color-text-light);
    margin-bottom: 12px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    margin: 16px auto 0;
    border-radius: 2px;
}

.section-header p {
    color: var(--color-text-muted);
    font-size: 1rem;
    max-width: 600px;
    margin: 0 auto;
}

.section-header-light h2 {
    color: var(--color-text-light);
}

/* 首页产品展示 */
.products-section {
    padding: 100px 0;
    background: var(--color-bg-dark);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: 24px;
}

.product-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-6px);
    border-color: var(--color-border-light);
    box-shadow: var(--shadow-lg);
}

.product-card-img {
    height: 200px;
    background: linear-gradient(135deg, #1a1a1a, #252525);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.product-card-img::before {
    content: '\f013';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 3rem;
    color: rgba(196, 92, 26, 0.15);
}

.product-card-img img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-card-body {
    padding: 24px;
}

.product-card-category {
    font-size: 0.75rem;
    color: var(--color-primary-light);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.product-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: 10px;
    line-height: 1.4;
}

.product-card-desc {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 16px;
}

.product-card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--color-primary-light);
    font-size: 0.9rem;
    font-weight: 500;
}

.product-card-link:hover {
    gap: 10px;
}

/* 优势区块 */
.advantages-section {
    padding: 100px 0;
    background: var(--color-bg-section);
    position: relative;
}

.advantages-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23c45c1a' fill-opacity='0.03' fill-rule='evenodd'%3E%3Cpath d='M0 40L40 0H20L0 20M40 40V20L20 40'/%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    position: relative;
    z-index: 1;
}

.advantage-card {
    display: flex;
    gap: 20px;
    padding: 30px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.advantage-card:hover {
    border-color: var(--color-primary);
    background: var(--color-bg-card-hover);
}

.advantage-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(196,92,26,0.15), rgba(196,92,26,0.05));
    border: 1px solid rgba(196,92,26,0.2);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: var(--color-primary-light);
    flex-shrink: 0;
}

.advantage-content h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: 8px;
}

.advantage-content p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* 关于首页区块 */
.about-section {
    padding: 100px 0;
    background: var(--color-bg-dark);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image-main {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: linear-gradient(135deg, #1a1a1a, #252525);
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
}

.about-image-main::before {
    content: '\f7d9';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 5rem;
    color: rgba(196, 92, 26, 0.1);
}

.about-image-main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-image-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: #fff;
    padding: 24px 32px;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.about-image-badge .years {
    font-size: 2.5rem;
    font-weight: 900;
    line-height: 1;
    display: block;
}

.about-image-badge .text {
    font-size: 0.85rem;
    opacity: 0.9;
}

.about-content h2 {
    font-size: 2rem;
    font-weight: 900;
    color: var(--color-text-light);
    margin-bottom: 20px;
    line-height: 1.3;
}

.about-content h2 span {
    color: var(--color-primary-light);
}

.about-content p {
    color: var(--color-text-muted);
    margin-bottom: 16px;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin: 32px 0;
    padding: 24px;
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.stat-item .stat-number {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--color-primary-light);
    display: block;
}

.stat-item .stat-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* 新闻区块 */
.news-section {
    padding: 100px 0;
    background: var(--color-bg-section);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 24px;
}

.news-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 28px;
    transition: var(--transition);
}

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

.news-card-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 14px;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.news-card-category {
    background: rgba(196,92,26,0.1);
    color: var(--color-primary-light);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-weight: 500;
}

.news-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: 10px;
    line-height: 1.4;
}

.news-card-title a {
    color: inherit;
}

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

.news-card-excerpt {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 16px;
}

.news-card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--color-primary-light);
    font-size: 0.9rem;
    font-weight: 500;
}

/* CTA区块 */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, rgba(196,92,26,0.1), rgba(0,0,0,0));
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    text-align: center;
}

.cta-section h2 {
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--color-text-light);
    margin-bottom: 16px;
}

.cta-section p {
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto 36px;
    font-size: 1.05rem;
}

/* ========== 产品列表页 ========== */
.products-page {
    padding: 60px 0 100px;
}

.products-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 40px;
}

.sidebar {
    position: sticky;
    top: 96px;
    height: fit-content;
}

.sidebar-widget {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 24px;
}

.sidebar-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

.category-menu li {
    margin-bottom: 4px;
}

.category-menu li a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    color: var(--color-text);
    font-size: 0.9rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.category-menu li a:hover,
.category-menu li a.active {
    background: rgba(196,92,26,0.08);
    color: var(--color-primary-light);
}

.category-menu li a.active::after {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
}

.products-list-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

/* ========== 产品详情页 ========== */
.product-detail-page {
    padding: 60px 0 100px;
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.product-detail-image {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.product-detail-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.product-detail-info .category-tag {
    display: inline-block;
    background: rgba(196,92,26,0.1);
    color: var(--color-primary-light);
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 16px;
}

.product-detail-info h1 {
    font-size: 2rem;
    font-weight: 900;
    color: var(--color-text-light);
    margin-bottom: 16px;
    line-height: 1.3;
}

.product-detail-info .summary {
    font-size: 1.05rem;
    color: var(--color-text);
    margin-bottom: 24px;
    line-height: 1.7;
}

.product-specs {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 28px;
}

.product-specs h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: 16px;
}

.product-specs ul li {
    display: flex;
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.95rem;
}

.product-specs ul li:last-child {
    border-bottom: none;
}

.product-specs ul li strong {
    color: var(--color-text-light);
    min-width: 120px;
}

.product-specs ul li span {
    color: var(--color-text-muted);
}

.product-detail-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.product-detail-content {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 40px;
}

.product-detail-content h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

.product-detail-content p {
    color: var(--color-text-muted);
    margin-bottom: 16px;
    line-height: 1.8;
}

/* ========== 详情页参数表格（深色适配，覆盖迁移内容里的浅色 bgcolor） ========== */
.product-detail-content table,
.entry-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 0.9rem;
    line-height: 1.5;
    background: transparent;
}

.product-detail-content table td,
.product-detail-content table th,
.entry-content table td,
.entry-content table th {
    /* background-color beats the presentational bgcolor="#ECECFF/#F5F5F5" attribute */
    background-color: var(--color-bg-card) !important;
    color: var(--color-text) !important;
    border: 1px solid var(--color-border) !important;
    padding: 10px 12px !important;
    vertical-align: middle;
    text-align: center;
}

.product-detail-content table tr:first-child td,
.product-detail-content table tr:first-child th,
.entry-content table tr:first-child td,
.entry-content table tr:first-child th {
    background-color: rgba(196, 92, 26, 0.14) !important;
    color: var(--color-text-light) !important;
    font-weight: 700;
}

.product-detail-content table tbody tr:nth-child(even) td,
.entry-content table tbody tr:nth-child(even) td {
    background-color: rgba(255, 255, 255, 0.02) !important;
}

.product-detail-content table td div,
.entry-content table td div {
    color: inherit;
    margin: 0;
}

/* ========== 详情图集（覆盖后的 [gallery]：等宽纵向堆叠） ========== */
.bc-product-gallery {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    margin: 28px auto;
    max-width: 640px;
}

.bc-product-gallery-item {
    margin: 0;
    width: 100%;
}

.bc-product-gallery-link {
    display: block;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-card);
    overflow: hidden;
    transition: border-color 0.25s ease, transform 0.25s ease;
}

.bc-product-gallery-link:hover {
    border-color: var(--color-primary-light);
    transform: translateY(-2px);
}

.bc-product-gallery-img {
    display: block;
    width: 100%;
    height: auto;
}

.related-products {
    margin-top: 60px;
}

.related-products h2 {
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--color-text-light);
    margin-bottom: 30px;
}

/* ========== 新闻页 ========== */
.news-page {
    padding: 60px 0 100px;
}

.news-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 40px;
}

.news-list .news-item {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 24px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 28px;
    margin-bottom: 20px;
    transition: var(--transition);
}

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

.news-item-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-section);
    border-radius: var(--radius-sm);
    padding: 16px;
    text-align: center;
}

.news-item-date .day {
    font-size: 2rem;
    font-weight: 900;
    color: var(--color-primary-light);
    line-height: 1;
}

.news-item-date .month {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

.news-item-content h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.news-item-content h3 a {
    color: var(--color-text-light);
}

.news-item-content h3 a:hover {
    color: var(--color-primary-light);
}

.news-item-content p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* 新闻详情 */
.article-page {
    padding: 60px 0 100px;
}

.article-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 40px;
}

.article-main {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 40px;
}

.article-header {
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--color-border);
}

.article-header h1 {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--color-text-light);
    margin-bottom: 16px;
    line-height: 1.4;
}

.article-meta {
    display: flex;
    gap: 20px;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.article-body {
    color: var(--color-text);
    line-height: 1.9;
    font-size: 1rem;
}

.article-body h2,
.article-body h3 {
    color: var(--color-text-light);
    margin: 28px 0 14px;
}

.article-body h2 {
    font-size: 1.4rem;
}

.article-body h3 {
    font-size: 1.15rem;
}

.article-body p {
    margin-bottom: 16px;
}

.article-body strong {
    color: var(--color-text-light);
}

/* ========== 联系页 ========== */
.contact-page {
    padding: 60px 0 100px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-info-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 36px;
}

.contact-info-card h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: 24px;
}

.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-info-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-info-item .icon {
    width: 48px;
    height: 48px;
    background: rgba(196,92,26,0.1);
    border: 1px solid rgba(196,92,26,0.2);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--color-primary-light);
    flex-shrink: 0;
}

.contact-info-item .info h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-light);
    margin-bottom: 4px;
}

.contact-info-item .info p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.contact-form-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 36px;
}

.contact-form-card h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 8px;
}

.form-group label .required {
    color: var(--color-primary);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    background: var(--color-bg-dark);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(196,92,26,0.1);
}

.form-control::placeholder {
    color: #555;
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.2);
    color: #4ade80;
    padding: 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
}

/* ========== 在线订购 ========== */
.inquiry-page {
    padding: 60px 0 100px;
}

.inquiry-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 40px;
}

.inquiry-intro h2 {
    font-size: 2rem;
    font-weight: 900;
    color: var(--color-text-light);
    margin-bottom: 12px;
}

.inquiry-intro p {
    color: var(--color-text-muted);
}

.inquiry-form-wrapper {
    max-width: 800px;
    margin: 0 auto;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 40px;
}

/* ========== 关于页 ========== */
.about-page {
    padding: 60px 0 100px;
}

.about-hero {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 60px;
    margin-bottom: 60px;
    text-align: center;
}

.about-hero h1 {
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--color-text-light);
    margin-bottom: 20px;
}

.about-hero p {
    color: var(--color-text-muted);
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.05rem;
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.about-feature {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 36px;
    text-align: center;
    transition: var(--transition);
}

.about-feature:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
}

.about-feature .icon {
    width: 64px;
    height: 64px;
    background: rgba(196,92,26,0.1);
    border: 1px solid rgba(196,92,26,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: var(--color-primary-light);
    margin: 0 auto 20px;
}

.about-feature h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: 10px;
}

.about-feature p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

.about-content-block {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 40px;
    margin-bottom: 30px;
}

.about-content-block h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

.about-content-block p {
    color: var(--color-text-muted);
    margin-bottom: 14px;
    line-height: 1.8;
}

/* ========== 页脚 ========== */
.footer-cta {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    padding: 60px 0;
}

.footer-cta-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
}

.footer-cta-text h2 {
    font-size: 1.8rem;
    font-weight: 900;
    color: #fff;
    margin-bottom: 8px;
}

.footer-cta-text p {
    color: rgba(255,255,255,0.85);
    font-size: 1rem;
}

.main-footer {
    background: var(--color-bg-darker);
    border-top: 1px solid var(--color-border);
    padding: 80px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr 1.5fr;
    gap: 40px;
    padding-bottom: 60px;
    border-bottom: 1px solid var(--color-border);
}

.footer-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: 20px;
}

.footer-about p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    font-size: 1rem;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

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

.footer-links a,
.footer-products a {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links a:hover,
.footer-products a:hover {
    color: var(--color-primary-light);
    padding-left: 4px;
}

.contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 14px;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.contact-list i {
    color: var(--color-primary);
    font-size: 0.9rem;
    margin-top: 4px;
    flex-shrink: 0;
}

.footer-bottom {
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

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

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

/* 返回顶部 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
    font-size: 1rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
    text-decoration: none;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    .about-grid,
    .product-detail-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .products-layout,
    .news-layout,
    .article-layout {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: static;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-bg-dark);
        flex-direction: column;
        align-items: stretch;
        padding: 20px;
        gap: 0;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        overflow-y: auto;
        border-top: 1px solid var(--color-border);
    }
    
    .nav-menu.open {
        transform: translateX(0);
    }
    
    .nav-menu > li > a {
        padding: 14px 16px;
        border-bottom: 1px solid var(--color-border);
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        display: none;
        box-shadow: none;
        border: none;
        background: var(--color-bg-darker);
        margin-top: 8px;
    }
    
    .dropdown.open .dropdown-menu {
        display: block;
    }
    
    .hero-slider {
        height: 500px;
    }
    
    .hero-slide-content h1 {
        font-size: 2rem;
    }
    
    .hero-slide-content p {
        font-size: 1rem;
    }
    
    .section-header h2 {
        font-size: 1.6rem;
    }
    
    .about-image-badge {
        bottom: 10px;
        right: 10px;
        padding: 16px 20px;
    }
    
    .about-image-badge .years {
        font-size: 1.8rem;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .news-item {
        grid-template-columns: 1fr;
    }
    
    .news-item-date {
        flex-direction: row;
        gap: 8px;
        padding: 12px;
    }
    
    .news-item-date .day {
        font-size: 1.4rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-cta-inner {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .products-grid,
    .products-list-grid {
        grid-template-columns: 1fr;
    }
    
    .about-hero {
        padding: 36px 24px;
    }
    
    .contact-form-card,
    .contact-info-card {
        padding: 24px;
    }
    
    .article-main {
        padding: 24px;
    }
    
    .product-detail-content {
        padding: 24px;
    }

    /* Mobile: let wide spec tables scroll horizontally instead of cramming */
    .product-detail-content table,
    .entry-content table {
        display: block;
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        white-space: nowrap;
    }

    .product-detail-content table td,
    .product-detail-content table th,
    .entry-content table td,
    .entry-content table th {
        white-space: nowrap;
    }

    .entry-content iframe,
    .entry-content video,
    .entry-content embed,
    .entry-content object {
        max-width: 100%;
    }
    
    .inquiry-form-wrapper {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .top-bar-inner {
        flex-direction: column;
        gap: 6px;
        text-align: center;
    }
    
    .hero-slide-content h1 {
        font-size: 1.6rem;
    }
    
    .logo-main {
        font-size: 0.95rem;
    }
    
    .logo-sub {
        font-size: 0.55rem;
    }
}