:root {
    /* 黑白灰配色方案 */
    --color-black: #0A0A0A;
    --color-dark-gray: #1A1A1A;
    --color-medium-gray: #333333;
    --color-gray: #555555;
    --color-light-gray: #777777;
    --color-lighter-gray: #999999;
    --color-lightest-gray: #CCCCCC;
    --color-white: #FFFFFF;
    --color-off-white: #F8F8F8;
    --color-border: #E0E0E0;
    
    /* 仅保留少量深色作为强调 */
    --color-accent: #2C2C2C;
    --color-accent-hover: #444444;
    
    /* 蓝色主题色（参考PROTOLABS） */
    --color-blue: #0066CC;
    --color-blue-hover: #0052A3;
    --color-blue-light: #E6F2FF;
    
    /* 字体 */
    --font-primary: 'Inter', sans-serif;
    --font-heading: 'Montserrat', sans-serif;
    --font-logo: 'Montserrat', sans-serif;
    
    /* 阴影 */
    --shadow-light: 0 2px 12px rgba(0,0,0,0.06);
    --shadow-medium: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-heavy: 0 8px 30px rgba(0,0,0,0.12);
    
    /* 间距 */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 32px;
    --spacing-lg: 64px;
    --spacing-xl: 96px;
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--color-medium-gray);
    line-height: 1.7;
    background-color: var(--color-white);
    font-size: 16px;
    overflow-x: hidden;
}

/* 排版 */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--color-black);
    line-height: 1.3;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }
}

p {
    margin-bottom: 1.5rem;
    color: var(--color-gray);
}

a {
    color: var(--color-black);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-light-gray);
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 32px;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: center;
    border: 2px solid transparent;
    font-family: var(--font-primary);
}

.btn-primary {
    background-color: var(--color-black);
    color: var(--color-white);
    border-color: var(--color-black);
}

.btn-primary:hover {
    background-color: var(--color-medium-gray);
    border-color: var(--color-medium-gray);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-black);
    border-color: var(--color-black);
}

.btn-secondary:hover {
    background-color: var(--color-black);
    color: var(--color-white);
    border-color: var(--color-black);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-medium-gray);
    border-color: var(--color-lightest-gray);
}

.btn-outline:hover {
    border-color: var(--color-black);
    color: var(--color-black);
}

/* 顶部头部栏 */
.top-header {
    background-color: var(--color-dark-gray);
    color: var(--color-white);
    padding: 10px 0;
    font-size: 13px;
    border-bottom: 1px solid var(--color-medium-gray);
}

.top-header-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--spacing-sm);
}

.top-header-left, .top-header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.top-header-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.top-header i {
    color: var(--color-lightest-gray);
    font-size: 12px;
}

.top-header span {
    color: var(--color-lightest-gray);
    font-weight: 400;
}

.top-header-cta {
    background-color: var(--color-medium-gray);
    padding: 4px 10px;
    border-radius: 3px;
    font-weight: 500;
}

/* LOGO设计 */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    line-height: 1;
}

.logo img,
.logo-image {
    height: auto !important;
    max-height: 40px !important;
    width: auto !important;
    max-width: 180px !important;
    object-fit: contain !important;
    display: block !important;
}

.logo-brand {
    font-family: var(--font-logo);
    font-weight: 700;
    font-size: 28px;
    color: var(--color-black);
    letter-spacing: 1px;
}

.logo-tagline {
    font-family: var(--font-logo);
    font-weight: 600;
    font-size: 14px;
    color: var(--color-gray);
    letter-spacing: 2px;
    text-transform: uppercase;
    border-left: 1px solid var(--color-border);
    padding-left: 12px;
}

/* 主导航栏 */
.main-header {
    background-color: var(--color-white);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
    padding: 12px 0;
    transition: all var(--transition-normal);
}

.main-header.scrolled {
    box-shadow: var(--shadow-medium);
    padding: 8px 0;
}

.main-header-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--spacing-sm);
    position: relative;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    flex: 1;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.header-quote-btn {
    white-space: nowrap;
    padding: 8px 18px;
    font-size: 0.875rem;
    line-height: 1.4;
}

/* 主要导航菜单 */
.main-nav {
    display: flex;
    gap: 0;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 0;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: var(--color-gray);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    padding: 8px 16px;
    transition: color var(--transition-fast);
    display: block;
}

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

.nav-link.active {
    color: var(--color-black);
    font-weight: 600;
}

/* 导航链接中的下拉箭头图标 */
.nav-link .fa-chevron-down {
    font-size: 12px;
    margin-left: 4px;
}

/* Footer 列标题样式 */
.footer-column-title {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

/* 下拉菜单 */
.dropdown {
    position: relative;
}

.dropdown-content {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--color-white);
    min-width: 220px;
    box-shadow: var(--shadow-heavy);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-normal);
    z-index: 100;
}

.dropdown-content.mega-menu {
    left: 50%;
    transform: translateX(-50%) translateY(10px);
}

.nav-item:hover .dropdown-content.mega-menu {
    transform: translateX(-50%) translateY(0);
}

.dropdown:hover .dropdown-content,
.nav-item:hover .dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: block;
    padding: 12px 20px;
    color: var(--color-gray);
    text-decoration: none;
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

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

.dropdown-item:hover {
    background-color: var(--color-off-white);
    color: var(--color-black);
}

/* Mega Menu 样式 */
.mega-menu {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    padding: 30px 40px;
    min-width: 800px;
    max-width: 1000px;
}

.mega-menu.mega-menu-4col {
    grid-template-columns: repeat(4, 1fr);
    min-width: 900px;
    max-width: 1100px;
}

.mega-menu-column {
    display: flex;
    flex-direction: column;
}

.mega-menu-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: 15px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--color-black);
    text-decoration: none;
    display: block;
    transition: color var(--transition-fast);
    cursor: pointer;
}

.mega-menu-title:hover {
    color: var(--color-medium-gray);
}

.mega-menu-item {
    display: block;
    padding: 8px 0;
    color: var(--color-gray);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-size: 0.95rem;
}

.mega-menu-item:hover {
    color: var(--color-black);
    padding-left: 5px;
}

/* 询价按钮 */
.quote-btn {
    background-color: var(--color-black);
    color: var(--color-white);
    border: none;
    padding: 12px 28px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.quote-btn:hover {
    background-color: var(--color-medium-gray);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-black);
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
    position: relative;
    flex-shrink: 0;
}

        /* 英雄区域 */
        .hero {
            position: relative;
            background: var(--color-white) !important;
            color: var(--color-black);
            padding: calc(var(--spacing-xl) / 2) 0;
        }
        
        .hero::before {
            display: none !important;
        }

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero-content {
    max-width: 100%;
}

.hero-image {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 400px;
    border-radius: 8px;
    overflow: hidden;
}

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

.hero h1 {
    color: var(--color-black);
    margin-bottom: var(--spacing-md);
    font-size: 3.5rem;
    font-weight: 700;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-gray);
    max-width: 700px;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* 内容区域通用样式 */
.section {
    padding: calc(var(--spacing-xl) * 0.75) 0;
}

.section-light {
    background-color: var(--color-off-white);
}

.section-dark {
    background-color: var(--color-dark-gray);
    color: var(--color-white);
}

.section-dark h2,
.section-dark h3 {
    color: var(--color-white);
}

.section-dark p {
    color: var(--color-lightest-gray);
}

.section-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: block;
}

.section-header {
    text-align: center;
    margin-bottom: calc(var(--spacing-lg) * 0.75);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--color-black);
}

.section-dark .section-title::after {
    background-color: var(--color-white);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-gray);
    max-width: 700px;
    margin: 0 auto;
}

.section-dark .section-subtitle {
    color: var(--color-lightest-gray);
}

/* 左右视频文字布局 */
.video-text-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: calc(var(--spacing-lg) * 0.75);
}

.video-text-section.reverse {
    flex-direction: row-reverse;
}

.video-text-content {
    flex: 1;
}

.video-text-video {
    flex: 1;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-medium);
}

.video-text-video video {
    width: 100%;
    height: auto;
    display: block;
}

/* 图文展示 */
.image-text-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: calc(var(--spacing-lg) * 0.75);
}

.image-text-section.reverse {
    flex-direction: row-reverse;
}

.image-text-content {
    flex: 1;
}

.image-text-image {
    flex: 1;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-medium);
}

.image-text-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 服务卡片 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: calc(var(--spacing-md) * 0.75);
}

.service-card {
    background-color: var(--color-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: all var(--transition-normal);
    height: 100%;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--color-border);
}

.service-card:hover {
    border-color: var(--color-medium-gray);
    transform: translateY(-8px);
    box-shadow: var(--shadow-heavy);
}

.service-image {
    height: 220px;
    overflow: hidden;
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.service-content {
    padding: calc(var(--spacing-md) * 0.75);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.service-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.service-description {
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-black);
    text-decoration: none;
    font-weight: 600;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
    transition: color var(--transition-fast);
}

.service-link:hover {
    color: var(--color-medium-gray);
}

.service-link i {
    transition: transform var(--transition-fast);
}

.service-link:hover i {
    transform: translateX(4px);
}

/* 行业应用 */
.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: calc(var(--spacing-md) * 0.75);
    margin-bottom: calc(var(--spacing-md) * 0.75);
}

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

.industry-item {
    background-color: var(--color-white);
    border-radius: 8px;
    padding: calc(var(--spacing-md) * 0.75);
    text-align: center;
    box-shadow: var(--shadow-light);
    transition: all var(--transition-normal);
    border: 1px solid var(--color-border);
}

.industry-item:hover {
    border-color: var(--color-medium-gray);
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.industry-icon {
    font-size: 2.5rem;
    color: var(--color-medium-gray);
    margin-bottom: var(--spacing-sm);
    transition: color var(--transition-normal);
}

.industry-item:hover .industry-icon {
    color: var(--color-black);
}

.industry-title {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.industry-description {
    font-size: 0.9rem;
    color: var(--color-gray);
}

/* 优势展示 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: calc(var(--spacing-md) * 0.75);
}

.advantage-item {
    text-align: center;
    padding: calc(var(--spacing-md) * 0.75);
    transition: transform var(--transition-normal);
}

.advantage-item:hover {
    transform: translateY(-5px);
}

.advantage-icon {
    font-size: 2.5rem;
    color: var(--color-medium-gray);
    margin-bottom: var(--spacing-sm);
}

.advantage-title {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

/* 材料展示 */
.materials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.material-card {
    background-color: var(--color-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--color-border);
}

.material-image {
    height: 200px;
    overflow: hidden;
}

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

.material-content {
    padding: var(--spacing-md);
}

.material-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.material-list {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.material-list li {
    padding: 4px 0;
    color: var(--color-gray);
    border-bottom: 1px solid var(--color-border);
}

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

/* 统计数字 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    text-align: center;
}

.stat-item {
    padding: calc(var(--spacing-md) * 0.75);
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-black);
    margin-bottom: 8px;
    font-family: var(--font-heading);
}

.section-dark .stat-number {
    color: var(--color-white);
}

.stat-label {
    font-size: 1.125rem;
    color: var(--color-gray);
}

.section-dark .stat-label {
    color: var(--color-lightest-gray);
}

/* 表单样式 */
.quote-form-section {
    background-color: var(--color-white);
    border-radius: 12px;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-heavy);
    margin-top: calc(var(--spacing-md) * 0.75);
}

.form-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: calc(var(--spacing-md) * 0.75);
    margin-bottom: calc(var(--spacing-md) * 0.75);
}

.form-group {
    margin-bottom: calc(var(--spacing-sm) * 0.75);
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--color-dark-gray);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-black);
}

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

.form-select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-family: var(--font-primary);
    font-size: 1rem;
    background-color: var(--color-white);
    cursor: pointer;
}

.file-upload {
    border: 2px dashed var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-md);
    text-align: center;
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

.file-upload:hover {
    border-color: var(--color-light-gray);
}

.file-upload i {
    font-size: 2.5rem;
    color: var(--color-light-gray);
    margin-bottom: var(--spacing-sm);
}

.file-upload-text {
    font-size: 1rem;
    color: var(--color-gray);
}

.file-upload-hint {
    font-size: 0.875rem;
    color: var(--color-light-gray);
    margin-top: 4px;
}

.form-actions {
    display: flex;
    justify-content: center;
    gap: calc(var(--spacing-md) * 0.75);
    margin-top: var(--spacing-md);
}

        /* CTA区域 */
        .cta-section {
            background-size: cover;
            background-position: center;
            color: var(--color-white);
            padding: var(--spacing-xl) 0;
            text-align: center;
        }

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-white);
}

.cta-description {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-lightest-gray);
}

.btn-upload {
    background-color: var(--color-white);
    color: var(--color-black);
    padding: 18px 40px;
    font-size: 1.125rem;
    font-weight: 600;
}

.btn-upload:hover {
    background-color: var(--color-lightest-gray);
    color: var(--color-black);
}

/* 页脚 */
.footer {
    background-color: var(--color-dark-gray);
    color: var(--color-white);
    padding: calc(var(--spacing-xl) * 0.75) 0 calc(var(--spacing-lg) * 0.75);
    border-top: 1px solid var(--color-medium-gray);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.footer-main {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: calc(var(--spacing-xl) / 2);
    padding-bottom: calc(var(--spacing-xl) / 2);
    border-bottom: 1px solid var(--color-medium-gray);
}

.footer-logo-section {
    display: flex;
    flex-direction: column;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    line-height: 1;
    margin-bottom: var(--spacing-md);
}

.footer-logo-brand {
    font-family: var(--font-logo);
    font-weight: 700;
    font-size: 24px;
    color: var(--color-white);
    letter-spacing: 1px;
}

.footer-logo-tagline {
    font-family: var(--font-logo);
    font-weight: 600;
    font-size: 12px;
    color: var(--color-lightest-gray);
    letter-spacing: 2px;
    text-transform: uppercase;
    border-left: 1px solid var(--color-gray);
    padding-left: 12px;
}

.footer-description {
    color: var(--color-lightest-gray);
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
    line-height: 1.6;
}

.footer-column-title {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-white);
    position: relative;
    padding-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-column-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: var(--color-lightest-gray);
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--color-lightest-gray);
    text-decoration: none;
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
}

.footer-links a:hover {
    color: var(--color-white);
}

.footer-links a i {
    font-size: 0.75rem;
    width: 16px;
    opacity: 0.7;
}

.footer-contact {
    color: var(--color-lightest-gray);
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
    font-size: 0.95rem;
}

.footer-contact-item i {
    color: var(--color-lightest-gray);
    margin-top: 4px;
    flex-shrink: 0;
    opacity: 0.7;
}

/* 认证徽章 */
.certifications {
    display: flex;
    flex-wrap: nowrap;
    gap: 8px;
    margin-top: var(--spacing-sm);
}

.certification-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    background-color: rgba(255,255,255,0.1);
    padding: 6px 10px;
    border-radius: 4px;
    font-size: 0.85rem;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.certification-badge:hover {
    background-color: rgba(255,255,255,0.15);
}

.certification-badge i {
    font-size: 1.2rem;
    color: var(--color-lightest-gray);
}

/* 认证徽章图片样式 */
.footer-certifications-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) 0;
    margin: calc(var(--spacing-xl) / 2) 0;
}

.certifications-images {
    display: flex;
    flex-wrap: nowrap;
    gap: 10px;
    margin-top: 0;
    align-items: flex-start;
    justify-content: center;
}

.certification-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.certification-image {
    height: 60px;
    width: 60px;
    object-fit: cover;
    border-radius: 50%;
    transition: all var(--transition-fast);
    filter: brightness(0.95);
    display: block;
    background-color: var(--color-white);
    padding: 3px;
    box-sizing: border-box;
}

.certification-image:hover {
    opacity: 0.9;
    filter: brightness(1);
    transform: scale(1.1);
}

.certification-label {
    color: var(--color-white);
    font-size: 0.875rem;
    font-weight: 600;
    text-align: center;
    white-space: nowrap;
    font-family: var(--font-heading);
}

/* 页脚底部 */
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: calc(var(--spacing-md) / 2);
    padding-top: calc(var(--spacing-md) / 2);
    color: var(--color-lightest-gray);
    font-size: 0.875rem;
}

.footer-copyright {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-social {
    display: flex;
    gap: 16px;
}

.footer-social a {
    color: var(--color-lightest-gray);
    font-size: 1.125rem;
    transition: color var(--transition-fast);
}

.footer-social a:hover {
    color: var(--color-white);
}

.footer-links-bottom {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-links-bottom a {
    color: var(--color-lightest-gray);
    text-decoration: none;
    transition: color var(--transition-fast);
    font-size: 0.875rem;
}

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

/* 标签页样式 */
.tabs-container {
    max-width: 1200px;
    margin: 0 auto;
}

.tabs-header {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--color-border);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.tab-button {
    padding: 16px 32px;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gray);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    bottom: -2px;
    z-index: 1;
    pointer-events: auto;
}

.tab-button:hover {
    color: var(--color-black);
    background-color: var(--color-off-white);
}

.tab-button.active {
    color: var(--color-black);
    border-bottom-color: var(--color-black);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.case-study-card {
    background-color: var(--color-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}

.case-study-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.case-study-image {
    height: 250px;
    overflow: hidden;
}

.case-study-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.case-study-content {
    padding: var(--spacing-md);
}

.case-study-description {
    color: var(--color-gray);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* FAQ手风琴样式 */
.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
}

.faq-question {
    padding: var(--spacing-md);
    font-weight: 600;
    color: var(--color-black);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color var(--transition-fast);
}

.faq-question:hover {
    background-color: var(--color-off-white);
}

.faq-question i {
    transition: transform var(--transition-normal);
}

.faq-item.active .faq-question i {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
    padding: 0 var(--spacing-md);
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 var(--spacing-md) var(--spacing-md);
}

.faq-answer-content {
    color: var(--color-gray);
    line-height: 1.7;
    padding-top: var(--spacing-sm);
}

/* 工具类 */
.text-center {
    text-align: center;
}

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

/* About页面特殊样式 */
/* 面包屑导航 */
.breadcrumb {
    padding: var(--spacing-sm) 0;
    background-color: var(--color-off-white);
    border-bottom: 1px solid var(--color-border);
}

.breadcrumb-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
    font-size: 0.9rem;
}

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

.breadcrumb-item a {
    color: var(--color-gray);
    transition: color var(--transition-fast);
}

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

.breadcrumb-item.active {
    color: var(--color-black);
    font-weight: 600;
}

.breadcrumb-separator {
    color: var(--color-light-gray);
}

/* 时间轴样式 */
.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding: var(--spacing-lg) 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--color-border);
    transform: translateX(-50%);
    z-index: 1;
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-xl);
    display: flex;
    align-items: flex-start;
    flex-direction: row;
    padding-top: 0;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-content {
    flex: 1;
    padding: var(--spacing-md);
    background-color: var(--color-white);
    border-radius: 8px;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--color-border);
    margin: 0 var(--spacing-md);
    margin-top: 0;
}

.timeline-year {
    position: absolute;
    left: 50%;
    top: 0;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background-color: var(--color-black);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.125rem;
    z-index: 2;
    box-shadow: var(--shadow-medium);
}

.timeline-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-black);
}

.timeline-description {
    color: var(--color-gray);
    line-height: 1.7;
}

/* Timeline 响应式 */
@media (max-width: 968px) {
    .timeline {
        padding-left: var(--spacing-md);
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-year {
        left: 20px;
        width: 60px;
        height: 60px;
        font-size: 1rem;
    }
    
    .timeline-content {
        margin-left: calc(60px + var(--spacing-md));
        margin-right: 0;
    }
}

/* 图片画廊 */
.gallery-filter {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.filter-button {
    padding: 10px 24px;
    background-color: var(--color-white);
    border: 2px solid var(--color-border);
    border-radius: 4px;
    color: var(--color-gray);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-button:hover {
    border-color: var(--color-black);
    color: var(--color-black);
}

.filter-button.active {
    background-color: var(--color-black);
    color: var(--color-white);
    border-color: var(--color-black);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.gallery-grid-2col {
    grid-template-columns: repeat(2, 1fr);
    max-width: 1000px;
    margin: 0 auto;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    cursor: pointer;
    aspect-ratio: 4/3;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0);
    transition: background var(--transition-normal);
}

.gallery-item:hover::after {
    background: rgba(0,0,0,0.3);
}

/* Gallery Caption 样式 */
.gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-md);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.7) 70%, transparent 100%);
    color: var(--color-white);
    transform: translateY(100%);
    transition: transform var(--transition-normal);
    z-index: 2;
}

.gallery-item:hover .gallery-caption {
    transform: translateY(0);
}

.gallery-caption h4 {
    color: var(--color-white);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.gallery-caption p {
    color: var(--color-lightest-gray);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 0;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

/* Lightbox样式 */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.95);
    z-index: 10000;
    align-items: center;
    justify-content: center;
}

.lightbox.active {
    display: flex;
}

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
}

.lightbox-image {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
}

.lightbox-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: var(--color-white);
    font-size: 2rem;
    cursor: pointer;
    padding: 10px;
    transition: transform var(--transition-fast);
}

.lightbox-close:hover {
    transform: scale(1.2);
}

/* 认证卡片 */
.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.certification-card {
    background-color: var(--color-white);
    border: 2px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-md);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.certification-card:hover {
    border-color: var(--color-black);
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.certification-icon {
    font-size: 3rem;
    color: var(--color-medium-gray);
    margin-bottom: var(--spacing-sm);
}

.certification-card:hover .certification-icon {
    color: var(--color-black);
}

/* Quote Form Modal Styles */
.quote-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10001;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.quote-modal.active {
    display: flex;
    opacity: 1;
}

.quote-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    cursor: pointer;
}

.quote-modal-content {
    position: relative;
    background-color: var(--color-white);
    border-radius: 8px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-heavy);
    z-index: 10002;
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.quote-modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    color: var(--color-gray);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 5px 10px;
    transition: color var(--transition-fast);
    z-index: 10;
}

.quote-modal-close:hover {
    color: var(--color-black);
}

.quote-modal-header {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.quote-modal-header h2 {
    margin-bottom: var(--spacing-xs);
    font-size: 1.75rem;
}

.quote-modal-header p {
    color: var(--color-gray);
    margin-bottom: 0;
    font-size: 0.95rem;
}

.quote-form {
    padding: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-black);
}

.form-group .required {
    color: #d32f2f;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: 16px;
    font-family: var(--font-primary);
    color: var(--color-black);
    transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-black);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.file-upload-wrapper {
    position: relative;
}

.form-file {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.file-upload-label {
    display: block;
    padding: 40px 20px;
    border: 2px dashed var(--color-border);
    border-radius: 4px;
    background-color: var(--color-off-white);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.file-upload-label:hover {
    border-color: var(--color-black);
    background-color: var(--color-white);
}

.file-upload-label i {
    font-size: 2.5rem;
    color: var(--color-gray);
    margin-bottom: var(--spacing-xs);
    display: block;
}

.file-upload-text {
    display: block;
    font-weight: 500;
    color: var(--color-black);
    margin-bottom: var(--spacing-xs);
}

.file-upload-hint {
    display: block;
    font-size: 0.875rem;
    color: var(--color-gray);
}

.file-upload-preview {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background-color: var(--color-off-white);
    border-radius: 4px;
    display: none;
}

.file-upload-preview.has-files {
    display: block;
}

.file-upload-preview-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-xs);
    background-color: var(--color-white);
    border-radius: 4px;
    margin-bottom: var(--spacing-xs);
}

.file-upload-preview-item:last-child {
    margin-bottom: 0;
}

.file-upload-preview-item i {
    color: var(--color-gray);
    margin-right: var(--spacing-xs);
}

.file-upload-preview-item-name {
    flex: 1;
    color: var(--color-black);
    font-size: 0.9rem;
}

.file-upload-preview-item-remove {
    background: none;
    border: none;
    color: var(--color-gray);
    cursor: pointer;
    padding: 5px;
    transition: color var(--transition-fast);
}

.file-upload-preview-item-remove:hover {
    color: var(--color-black);
}

.form-submit-group {
    margin-top: var(--spacing-lg);
    margin-bottom: 0;
}

.form-submit-group .btn {
    width: 100%;
    justify-content: center;
}

/* Quote Form Page Styles */
.quote-page-container {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--color-white);
    border-radius: 8px;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-light);
}

.quote-page-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.quote-page-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: var(--spacing-sm);
}

.quote-page-subtitle {
    color: var(--color-gray);
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 0;
}

.quote-form-page {
    padding: 0;
}

.quote-form-page .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.quote-form-page .form-group {
    margin-bottom: var(--spacing-md);
}

.quote-form-page .form-group:last-of-type {
    margin-bottom: 0;
}

.form-label-hint {
    font-weight: 400;
    color: var(--color-gray);
    font-size: 0.9em;
}

.form-message {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: 4px;
    display: none;
}

.form-message.show {
    display: block;
}

.form-message.success {
    background-color: #e8f5e9;
    color: #2e7d32;
    border: 1px solid #4caf50;
}

.form-message.error {
    background-color: #ffebee;
    color: #c62828;
    border: 1px solid #f44336;
}

@media (max-width: 768px) {
    .quote-modal-content {
        width: 95%;
        max-height: 95vh;
    }
    
    .quote-modal-header h2 {
        font-size: 1.5rem;
    }
}

.certification-name {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--color-black);
}

.certification-desc {
    font-size: 0.9rem;
    color: var(--color-gray);
    line-height: 1.6;
}

/* 流程步骤 */
.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.process-step {
    text-align: center;
    padding: var(--spacing-md);
    background-color: var(--color-white);
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

.process-step-number {
    width: 60px;
    height: 60px;
    background-color: var(--color-black);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto var(--spacing-sm);
}

.process-step-title {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-black);
}

.process-step-desc {
    font-size: 0.9rem;
    color: var(--color-gray);
    line-height: 1.6;
}

/* 视频播放器 */
.video-player {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    background-color: var(--color-black);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-heavy);
}

.video-player iframe,
.video-player video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.video-thumbnail {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.video-thumb {
    position: relative;
    cursor: pointer;
    border-radius: 8px;
    overflow: hidden;
    aspect-ratio: 16/9;
    background-color: var(--color-dark-gray);
}

.video-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-thumb::after {
    content: '\f04b';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3rem;
    color: var(--color-white);
    opacity: 0.9;
    transition: opacity var(--transition-fast);
}

.video-thumb:hover::after {
    opacity: 1;
}

.video-thumb-title {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    padding: var(--spacing-sm);
    color: var(--color-white);
    font-size: 0.9rem;
    font-weight: 600;
}

/* 客户评价 */
.testimonial {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    padding: var(--spacing-lg);
    background-color: var(--color-off-white);
    border-radius: 8px;
    border-left: 4px solid var(--color-black);
}

.testimonial-quote {
    font-size: 1.25rem;
    font-style: italic;
    color: var(--color-gray);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.testimonial-author {
    font-weight: 600;
    color: var(--color-black);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .section {
        padding: calc(var(--spacing-lg) * 0.75) 0;
    }
    
    .section-container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero {
        padding: calc(var(--spacing-lg) * 0.75) 0;
    }
    
    .video-text-section,
    .image-text-section {
        flex-direction: column;
        gap: calc(var(--spacing-md) * 0.75);
    }
    
    .timeline-item {
        flex-direction: row !important;
        padding-left: 0;
    }
    
    .news-layout {
        grid-template-columns: 1fr;
    }
    
    .global-offices-layout {
        grid-template-columns: 1fr;
    }
    
    .office-map {
        min-height: 300px;
    }
    
    .timeline-year {
        left: 30px;
    }
    
    .timeline-content {
        margin-left: var(--spacing-md);
        margin-right: 0;
    }
}

@media (max-width: 992px) {
    h1 { font-size: 2.75rem; }
    h2 { font-size: 2.25rem; }
    
    .section-title {
        font-size: 2rem;
    }
    
    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    
    .case-studies-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .main-nav {
        display: none;
    }
    
    .hamburger {
        display: block;
    }
    
    .main-header-container {
        position: relative;
    }
    
    .mega-menu {
        min-width: 600px;
        max-width: 800px;
    }
    
    /* 移动端菜单样式 */
    .main-header.menu-open .main-nav {
        display: block !important;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-white);
        box-shadow: var(--shadow-heavy);
        border-top: 1px solid var(--color-border);
        max-height: calc(100vh - 100px);
        overflow-y: auto;
        z-index: 999;
    }
    
    .nav-list.mobile-menu-active {
        display: flex !important;
        flex-direction: column;
        width: 100%;
        padding: var(--spacing-sm) 0;
    }
    
    .nav-list.mobile-menu-active .nav-item {
        width: 100%;
        border-bottom: 1px solid var(--color-border);
    }
    
    .nav-list.mobile-menu-active .nav-link {
        padding: var(--spacing-sm) var(--spacing-md);
        width: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    
    .nav-list.mobile-menu-active .dropdown-content {
        position: static;
        display: none;
        min-width: 100%;
        box-shadow: none;
        border: none;
        border-top: 1px solid var(--color-border);
        margin-top: 0;
        padding: var(--spacing-sm) 0 var(--spacing-sm) var(--spacing-md);
        opacity: 1;
        visibility: visible;
        transform: none;
    }
    
    .nav-list.mobile-menu-active .nav-item:hover .dropdown-content,
    .nav-list.mobile-menu-active .dropdown.active .dropdown-content {
        display: block;
    }
    
    .nav-list.mobile-menu-active .dropdown-content.mega-menu {
        left: 0;
        transform: none;
        grid-template-columns: 1fr;
    }
    
    .nav-list.mobile-menu-active .mega-menu-column {
        margin-bottom: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    .top-header-container {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
    
    .top-header-left, .top-header-right {
        justify-content: center;
        gap: var(--spacing-sm);
    }
    
    .header-left {
        width: 100%;
        justify-content: space-between;
    }
    
    .header-right {
        display: none; /* 移动端隐藏报价按钮 */
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .hero-image {
        min-height: 300px;
        order: -1;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.125rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .cta-title {
        font-size: 2rem;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .tabs-header {
        flex-direction: column;
        border-bottom: none;
    }
    
    .tab-button {
        width: 100%;
        text-align: left;
        border-bottom: 1px solid var(--color-border);
        border-left: 3px solid transparent;
    }
    
    .tab-button.active {
        border-left-color: var(--color-black);
        border-bottom-color: var(--color-border);
    }
    
    .case-studies-grid {
        grid-template-columns: 1fr;
    }
    
    .advantages-grid.grid-2-col {
        grid-template-columns: 1fr !important;
    }
    
    /* 确保advantages-grid在移动端单列 */
    .advantages-grid {
        grid-template-columns: 1fr !important;
    }
    
    .section-light .section-container > div[style*="grid-template-columns: repeat(4, 1fr)"] {
        grid-template-columns: 1fr !important;
        gap: var(--spacing-lg) !important;
    }
    
    .section-light .section-container > div[style*="grid-template-columns: repeat(4, 1fr)"] > div[style*="position: absolute"] {
        display: none !important;
    }
    
    .services-grid[style*="grid-template-columns: repeat(3, 1fr)"] {
        grid-template-columns: 1fr !important;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
    
    .footer-copyright {
        flex-direction: column;
        gap: 10px;
    }
    
    .certifications {
        justify-content: center;
    }
    
    .certifications-images {
        justify-content: center;
        gap: 8px;
    }
    
    .certification-image {
        height: 50px;
        width: 50px;
    }
    
    .certification-label {
        font-size: 0.75rem;
    }
    
    .certifications-images {
        gap: 8px;
    }
    
    .certification-item {
        gap: 6px;
    }
    
    .footer-certifications-section {
        align-items: center;
        padding: var(--spacing-sm) 0;
        margin: var(--spacing-md) 0;
    }
    
    .footer-links-bottom {
        justify-content: center;
    }
    
    .timeline-item {
        padding-left: 0;
    }
    
    .timeline-year {
        left: 20px;
        width: 60px;
        height: 60px;
        font-size: 0.9rem;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr !important;
    }
    
    .gallery-grid-2col {
        grid-template-columns: 1fr !important;
    }
    
    /* Gallery Caption 移动端优化 */
    .gallery-caption,
    .gallery-item-caption {
        padding: var(--spacing-sm);
        font-size: 0.95rem;
    }
    
    .gallery-caption h4,
    .gallery-item-title {
        font-size: 1rem;
    }
    
    .gallery-caption p,
    .gallery-item-description {
        font-size: 0.85rem;
    }
    
    .certifications-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    
    .section {
        padding: calc(var(--spacing-md) * 0.75) 0;
    }
    
    .section-container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero {
        padding: calc(var(--spacing-md) * 0.75) 0;
    }
    
    .services-grid,
    .industries-grid,
    .materials-grid {
        grid-template-columns: 1fr;
    }
    
    .service-card {
        max-width: 100%;
    }
    
    .logo-brand {
        font-size: 24px;
    }
    
    .logo-tagline {
        font-size: 12px;
    }
    
    .logo img,
    .logo-image {
        max-height: 38px !important;
        max-width: 160px !important;
    }
    
    .footer-logo-brand {
        font-size: 20px;
    }
    
    .mega-menu {
        min-width: 100% !important;
        max-width: 100% !important;
        grid-template-columns: 1fr !important;
        padding: var(--spacing-md);
    }
    
    .hero-contact-info {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .top-header-item {
        font-size: 0.85rem;
    }
    
    .top-header-item span {
        display: none;
    }
    
    .top-header-item i {
        margin-right: 0;
    }
}

/* 移动端优化 - 补充样式 */
@media (max-width: 768px) {
    /* 网格布局优化 */
    .services-grid,
    .services-grid.grid-2-col,
    .services-grid.grid-3-col,
    .services-grid.grid-4-col {
        grid-template-columns: 1fr !important;
    }
    
    .case-studies-grid {
        grid-template-columns: 1fr !important;
    }
    
    .advantages-grid,
    .advantages-grid.grid-3-col,
    .advantages-grid.grid-2-col {
        grid-template-columns: 1fr !important;
    }
    
    /* 图片文本布局 */
    .image-text-section,
    .video-text-section {
        flex-direction: column !important;
    }
    
    .image-text-image,
    .video-text-image {
        width: 100%;
        margin-bottom: var(--spacing-md);
    }
    
    .image-text-content,
    .video-text-content {
        width: 100%;
    }
    
    /* 能力网格 */
    .capabilities-grid {
        grid-template-columns: 1fr !important;
        gap: var(--spacing-md);
    }
    
    /* 行业网格 */
    .industries-grid,
    .industries-grid.grid-2-col {
        grid-template-columns: 1fr !important;
        gap: var(--spacing-md);
    }
    
    /* 材料网格 */
    .materials-grid {
        grid-template-columns: 1fr !important;
    }
    
    /* 画廊网格 */
    .gallery-grid {
        grid-template-columns: 1fr !important;
    }
    
    /* 设备列表 */
    .equipment-list {
        grid-template-columns: 1fr !important;
    }
    
    /* 2列列表网格 */
    .list-grid-2col,
    .list-grid-2col-gap-sm {
        grid-template-columns: 1fr !important;
    }
    
    /* 服务网格特殊样式 */
    .services-grid.grid-3-col-1400 {
        grid-template-columns: 1fr !important;
        max-width: 100% !important;
    }
    
    /* 通用自动适配网格 */
    .grid-auto-fit {
        grid-template-columns: 1fr !important;
    }
    
    /* 紧凑特性列表网格 */
    .feature-list-grid-compact {
        grid-template-columns: 1fr !important;
    }
    
    /* 流程步骤 */
    .process-steps {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .process-steps-grid {
        grid-template-columns: 1fr !important;
        gap: var(--spacing-lg) !important;
    }
    
    .process-steps-connector {
        display: none !important;
    }
    
    .process-step-wrapper {
        width: 100%;
    }
    
    /* 容器宽度 */
    .container-1200,
    .container-1000,
    .container-800 {
        padding: 0 var(--spacing-sm);
    }
    
    /* 服务卡片 */
    .service-card {
        margin-bottom: var(--spacing-md);
        height: auto !important;
    }
    
    .service-image {
        height: 200px;
    }
    
    .service-description,
    .advantage-text,
    .advantage-text-small,
    .case-study-description {
        overflow: visible !important;
        text-overflow: clip !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        max-height: none !important;
    }
    
    /* 优势项 */
    .advantage-item {
        margin-bottom: var(--spacing-md);
    }
    
    /* 比较框 */
    .comparison-box {
        padding: var(--spacing-md);
    }
    
    /* CTA区域 */
    .cta-section {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .cta-content {
        padding: var(--spacing-md);
    }
    
    /* 表格 */
    .table-responsive {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    table {
        min-width: 600px;
    }
    
    /* 面包屑 */
    .breadcrumb {
        flex-wrap: wrap;
        font-size: 0.875rem;
    }
    
    /* 下拉菜单在移动端全宽 */
    .dropdown-content {
        position: static;
        min-width: 100%;
        box-shadow: none;
        border: none;
        border-top: 1px solid var(--color-border);
        margin-top: var(--spacing-xs);
        padding: var(--spacing-sm) 0;
    }
    
    .dropdown-content.mega-menu {
        left: 0;
        transform: none;
    }
    
    /* 导航菜单移动端样式 */
    .nav-list {
        flex-direction: column;
        width: 100%;
    }
    
    .nav-item {
        width: 100%;
        border-bottom: 1px solid var(--color-border);
    }
    
    .nav-link {
        padding: var(--spacing-sm) var(--spacing-md);
        width: 100%;
    }
    
    /* 主头部容器 */
    .main-header-container {
        padding: 0 var(--spacing-sm);
    }
    
    /* Hero内容 */
    .hero-content {
        text-align: center;
    }
    
    .hero-list {
        text-align: left;
    }
    
    /* 间距调整 */
    .gap-xl {
        gap: var(--spacing-md) !important;
    }
    
    .gap-lg {
        gap: var(--spacing-md) !important;
    }
    
    /* 文本对齐 */
    .text-center {
        text-align: center !important;
    }
    
    /* 隐藏移动端不需要的元素 */
    .desktop-only {
        display: none !important;
    }
    
    /* Mega Menu 移动端优化 */
    .mega-menu-column {
        margin-bottom: var(--spacing-md);
    }
    
    /* 能力卡片 */
    .capability-card {
        margin-bottom: var(--spacing-md);
    }
    
    /* 行业项 */
    .industry-item {
        margin-bottom: var(--spacing-md);
    }
    
    /* 流程步骤圆圈 */
    .process-step-circle {
        width: 60px;
        height: 60px;
        font-size: 1.25rem;
    }
    
    /* 图片文本内容 */
    .image-text-content h3,
    .video-text-content h3 {
        font-size: 1.5rem;
    }
    
    /* 服务链接 */
    .service-link {
        font-size: 0.95rem;
    }
    
    /* 优势图标 */
    .advantage-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
    
    .advantage-icon-small {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }
    
    /* 行业图标 */
    .industry-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
    
    /* 统计数字 */
    .stat-number {
        font-size: 2.5rem;
    }
    
    /* 联系信息 */
    .hero-contact-item {
        font-size: 1rem;
    }
    
    /* 顶部头部 */
    .top-header {
        font-size: 0.8rem;
        padding: var(--spacing-xs) 0;
    }
    
    .top-header-cta {
        font-size: 0.75rem;
    }
}

@media (max-width: 576px) {
    /* 更小屏幕的额外优化 */
    .section-header {
        text-align: center;
    }
    
    .section-subtitle {
        font-size: 0.95rem;
    }
    
    .service-title {
        font-size: 1.25rem;
    }
    
    .service-description {
        font-size: 0.95rem;
    }
    
    .advantage-title {
        font-size: 1.125rem;
    }
    
    .advantage-text {
        font-size: 0.9rem;
    }
    
    .hero-image {
        min-height: 250px;
    }
    
    .top-header {
        font-size: 0.75rem;
        padding: var(--spacing-xs) 0;
    }
    
    .main-header {
        padding: 10px 0;
    }
    
    .main-header.scrolled {
        padding: 6px 0;
    }
    
    .logo-brand {
        font-size: 20px;
    }
    
    .logo-tagline {
        font-size: 10px;
        padding-left: 8px;
    }
    
    .logo img,
    .logo-image {
        max-height: 40px !important;
        max-width: 150px !important;
    }
    
    .btn {
        font-size: 0.95rem;
        padding: 12px 20px;
    }
    
    .btn-large {
        font-size: 1rem;
        padding: 14px 24px;
    }
    
    /* 卡片内边距 */
    .service-content {
        padding: var(--spacing-sm);
    }
    
    /* 确保所有文本内容完整显示 */
    .service-description,
    .advantage-text,
    .advantage-text-small,
    .advantage-text-large,
    .case-study-description,
    .industry-description,
    .capability-card-text {
        overflow: visible !important;
        text-overflow: clip !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        max-height: none !important;
        display: block !important;
    }
    
    /* 确保卡片内容完整 */
    .service-card,
    .advantage-item,
    .case-study-card,
    .industry-item,
    .capability-card {
        height: auto !important;
        min-height: auto !important;
    }
    
    /* 图片画廊 */
    .gallery-grid {
        grid-template-columns: 1fr !important;
    }
    
    /* 认证网格 */
    .certifications-grid {
        grid-template-columns: 1fr !important;
    }
    
    /* 时间线 */
    .timeline {
        padding-left: var(--spacing-sm);
    }
    
    /* 表单 */
    .form-input,
    .form-textarea {
        font-size: 16px; /* 防止iOS自动缩放 */
    }
    
    /* 文件上传区域 */
    .file-upload-label {
        padding: 30px 15px;
    }
    
    .file-upload-text {
        font-size: 0.9rem;
    }
    
    .file-upload-hint {
        font-size: 0.8rem;
    }
    
    /* 更小屏幕的额外优化 */
    .mega-menu-column {
        padding: var(--spacing-sm) 0;
    }
    
    .capability-card-title {
        font-size: 1.125rem;
    }
    
    .capability-card-text {
        font-size: 0.9rem;
    }
    
    .industry-title {
        font-size: 1.125rem;
    }
    
    .industry-description {
        font-size: 0.9rem;
    }
    
    .process-step-title {
        font-size: 1.125rem;
    }
    
    .process-step-title-small {
        font-size: 1rem;
    }
    
    .text-gray-small {
        font-size: 0.85rem;
    }
    
    /* 卡片内边距优化 */
    .advantage-item,
    .industry-item {
        padding: var(--spacing-sm);
    }
    
    /* 图片高度优化 */
    .case-study-image {
        height: 180px;
    }
    
    /* 按钮组 */
    .hero-buttons {
        gap: var(--spacing-sm);
    }
    
    /* 列表项间距 */
    .hero-list-item {
        margin-bottom: 8px;
        font-size: 1rem;
    }
    
    /* 认证徽章 */
    .certification-badge {
        font-size: 0.8rem;
        padding: 6px 12px;
    }
    
    /* 页脚链接 */
    .footer-links {
        font-size: 0.9rem;
    }
    
    /* 表格响应式 */
    .table-wrapper {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    /* 统计数字 */
    .stat-number {
        font-size: 2rem;
    }
    
    /* 联系信息图标 */
    .hero-contact-item i {
        font-size: 1rem;
    }
    
    /* 流程步骤包装器 */
    .process-step-wrapper {
        padding: var(--spacing-sm);
    }
}

/* ========================================
   提取的内联样式类 - 从 index.php 和其他页面提取
   确保样式完全一致，不改变现有显示效果
   ======================================== */

/* Hero 背景样式 */
.hero-bg-main {
    background: var(--color-off-white) !important;
}

.hero-bg-main .hero {
    background: var(--color-off-white) !important;
}

/* Hero 列表样式 */
.hero-list {
    list-style: none;
    padding: 0;
    margin: var(--spacing-md) 0 var(--spacing-lg);
    font-size: 1.125rem;
    color: var(--color-gray);
}

.hero-list-item {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.hero-list-icon {
    color: var(--color-black);
    font-size: 1.25rem;
}

/* Hero 联系信息样式 */
.hero-contact-info {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
    flex-wrap: wrap;
}

.hero-contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-black);
    font-size: 1.125rem;
    font-weight: 500;
}

.hero-contact-item i {
    font-size: 1.25rem;
    opacity: 0.9;
}

/* Grid 布局样式 - 这些类需要与已有的grid类配合使用 */
.services-grid.grid-2-col {
    grid-template-columns: repeat(2, 1fr) !important;
}

.services-grid.grid-3-col {
    grid-template-columns: repeat(3, 1fr) !important;
}

/* 移动端覆盖 */
@media (max-width: 768px) {
    .services-grid.grid-3-col {
        grid-template-columns: 1fr !important;
    }
}

.services-grid.grid-4-col {
    grid-template-columns: repeat(4, 1fr) !important;
}

.advantages-grid.grid-2-col {
    grid-template-columns: repeat(2, 1fr) !important;
}

/* 移动端覆盖 advantages-grid.grid-2-col */
@media (max-width: 768px) {
    .advantages-grid.grid-2-col {
        grid-template-columns: 1fr !important;
    }
}

/* 容器样式 */
.container-800 {
    max-width: 800px;
    margin: 0 auto;
}

.container-1000 {
    max-width: 1000px;
    margin: 0 auto;
}

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

/* Flex 布局样式 */
.flex-wrap {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.flex-item {
    flex: 1;
    min-width: 300px;
}

/* 文字样式 */
.text-h3-standard {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-black);
}

.text-h4-standard {
    font-size: 1.125rem;
    margin-bottom: 8px;
    color: var(--color-medium-gray);
}

.text-h3-case {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-black);
}

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

.text-gray-line-height {
    color: var(--color-gray);
    line-height: 1.8;
}

.text-gray-small {
    color: var(--color-gray);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* 列表样式 */
.list-unstyled {
    list-style: none;
    padding: 0;
    color: var(--color-gray);
    line-height: 1.8;
}

.list-grid-2col {
    list-style: none;
    padding: 0;
    color: var(--color-gray);
    line-height: 1.8;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.list-grid-2col-gap-sm {
    list-style: none;
    padding: 0;
    color: var(--color-gray);
    line-height: 1.8;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

/* 文本对齐 */
.text-center {
    text-align: center;
}

/* 优势项样式 */
.advantage-item-inline {
    text-align: left !important;
    padding: var(--spacing-md) !important;
    background-color: var(--color-off-white);
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

.advantage-icon-large {
    font-size: 3rem;
    color: var(--color-black);
    margin-bottom: var(--spacing-md);
}

.advantage-title-large {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

/* 流程步骤样式 */
.process-steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    position: relative;
}

.process-steps-connector {
    position: absolute;
    top: 50px;
    left: 12.5%;
    right: 12.5%;
    height: 2px;
    background: linear-gradient(to right, var(--color-border), var(--color-medium-gray), var(--color-border));
    z-index: 0;
}

.process-step-wrapper {
    position: relative;
    z-index: 1;
    text-align: center;
}

.process-step-circle {
    width: 100px;
    height: 100px;
    margin: 0 auto var(--spacing-md);
    background-color: var(--color-white);
    border: 3px solid var(--color-black);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-black);
    box-shadow: var(--shadow-medium);
}

.process-step-title-small {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-black);
}

/* 视频容器样式 */
.video-wrapper {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-heavy);
}

.video-container {
    position: relative;
    padding-bottom: 56.25%;
    background-color: var(--color-black);
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.3)), url(http://cnc.r350.com/wp-content/themes/cnc/assets/images/CNCserice.jpg);
    background-size: cover;
    background-position: center;
    cursor: pointer;
}

.video-overlay-content {
    text-align: center;
    color: #ffffff !important;
}

.video-overlay-content p,
.video-overlay-content .video-title,
.video-overlay-content .video-subtitle,
.video-overlay-content .video-play-text,
.video-overlay-content .video-play-hint {
    color: #ffffff !important;
}

.video-play-icon {
    font-size: 5rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
    transition: all var(--transition-normal);
    color: #ffffff !important;
}

.video-play-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: #ffffff !important;
}

.video-play-hint {
    font-size: 0.95rem;
    margin-top: 8px;
    opacity: 0.9;
    color: #ffffff !important;
}

.video-title,
.video-subtitle {
    color: #ffffff !important;
}

/* CTA 背景样式 */
.cta-bg-main {
    background: linear-gradient(rgba(26,26,26,0.9), rgba(26,26,26,0.9)), url(http://cnc.r350.com/wp-content/themes/cnc/assets/images/CNCserice.jpg);
    background-size: cover;
    background-position: center;
}

/* Section padding 自定义 */
.section-xl-padding {
    padding: var(--spacing-xl) 0;
}

/* 按钮样式扩展 */
.btn-large {
    font-size: 1.125rem;
    padding: 18px 40px;
}

/* Margin top */
.mt-lg {
    margin-top: var(--spacing-lg);
}

/* Max width utilities */
.mw-800 {
    max-width: 800px;
}

.mw-900 {
    max-width: 900px;
}

.mw-1000 {
    max-width: 1000px;
}

.mw-1200 {
    max-width: 1200px;
}

/* Grid gap utilities */
.gap-md {
    gap: var(--spacing-md);
}

.gap-lg {
    gap: var(--spacing-lg);
}

/* ========================================
   通用页面样式类 - 从所有 page-*.php 文件中提取
   用于统一处理所有页面的内联样式
   ======================================== */

/* H3 标题样式（image-text-content 中使用） */
.image-text-content h3 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-black);
}

/* 段落样式（image-text-content 中使用） */
.image-text-content p {
    color: var(--color-gray);
    line-height: 1.8;
}

.image-text-content p:not(:last-child) {
    margin-bottom: var(--spacing-sm);
}

/* 技术能力卡片容器 */
.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

/* 技术能力卡片样式 */
.capability-card {
    background-color: var(--color-off-white);
    padding: var(--spacing-md);
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

/* 技术能力卡片标题 */
.capability-card-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-black);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* 技术能力卡片图标 */
.capability-card-icon {
    color: var(--color-medium-gray);
}

/* 技术能力卡片文字 */
.capability-card-text {
    color: var(--color-gray);
    line-height: 1.7;
}

/* 优势网格（3列，用于页面中的优势展示） */
.advantages-grid.grid-3-col {
    grid-template-columns: repeat(3, 1fr) !important;
}

/* 优势项样式（较小的优势项，用于页面中的优势展示） */
.advantage-item-small {
    text-align: left;
    padding: var(--spacing-md);
    background-color: var(--color-off-white);
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

.advantage-icon-small {
    font-size: 2.5rem;
    color: var(--color-black);
    margin-bottom: var(--spacing-sm);
}

.advantage-title-small {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.advantage-text-small {
    color: var(--color-gray);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* 对比/说明框样式 */
.comparison-box {
    max-width: 1000px;
    margin: 0 auto;
    background-color: var(--color-off-white);
    padding: var(--spacing-lg);
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

.comparison-box p {
    color: var(--color-gray);
    line-height: 1.8;
}

.comparison-box p:not(:last-child) {
    margin-bottom: var(--spacing-md);
}

/* 特殊样式类 - 用于 page-capabilities.php 和其他页面 */

/* 服务网格 2列 */
.services-grid.grid-2-col {
    grid-template-columns: repeat(2, 1fr) !important;
}

/* 服务网格 3列（1400px容器） */
.services-grid.grid-3-col-1400 {
    grid-template-columns: repeat(3, 1fr) !important;
    max-width: 1400px !important;
}

/* 材料卡片网格 */
.materials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

/* 材料卡片 */
.material-card {
    background-color: var(--color-off-white);
    padding: var(--spacing-lg);
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

/* 材料卡片标题 */
.material-card-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-black);
}

/* 材料卡片文字 */
.material-card-text {
    color: var(--color-gray);
    line-height: 1.8;
    margin-top: var(--spacing-xs);
}

/* 材料卡片标签 */
.material-card-label {
    color: var(--color-black);
}

/* 优势项大尺寸（用于 page-materials.php） */
.advantage-item-large {
    text-align: left;
    padding: var(--spacing-lg);
    background-color: var(--color-off-white);
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

.advantage-icon-large {
    font-size: 3rem;
    color: var(--color-black);
    margin-bottom: var(--spacing-md);
}

.advantage-title-large {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.advantage-text-large {
    color: var(--color-gray);
    line-height: 1.8;
    font-size: 1rem;
}

/* 服务卡片特殊样式 */
.service-card-xl {
    padding: var(--spacing-xl);
}

.service-image-mb {
    margin-bottom: var(--spacing-md);
}

.service-icon-xl {
    font-size: 4rem;
    color: var(--color-black);
    margin-bottom: var(--spacing-md);
}

.service-title-xl {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.service-description-xl {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

/* 按钮全宽 */
.btn-full-width {
    width: 100%;
}

/* 文本居中 */
.text-center {
    text-align: center;
}

/* Margin top XL */
.mt-xl {
    margin-top: var(--spacing-xl);
}

/* Margin bottom SM */
.mb-sm {
    margin-bottom: var(--spacing-sm);
}

/* 优势网格 2列 */
.advantages-grid.grid-2-col {
    grid-template-columns: repeat(2, 1fr) !important;
}

/* 移动端覆盖 - 确保单列显示 */
@media (max-width: 768px) {
    .advantages-grid.grid-2-col {
        grid-template-columns: 1fr !important;
    }
}

/* Margin bottom MD */
.mb-md {
    margin-bottom: var(--spacing-md);
}

/* 行业标签样式 */
.industry-badge {
    display: inline-block;
    background-color: var(--color-black);
    color: white;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

/* 文本灰色 */
.text-gray {
    color: var(--color-gray);
}

/* Margin bottom XS */
.mb-xs {
    margin-bottom: var(--spacing-xs);
}

/* Gap XL */
.gap-xl {
    gap: var(--spacing-xl);
}

/* Gallery 样式 */
.gallery-filter {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

/* 设备列表样式 */
.equipment-list {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.equipment-list-item {
    display: flex;
    align-items: start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background-color: var(--color-off-white);
    border-radius: 8px;
    border-left: 4px solid var(--color-black);
}

.equipment-list-icon {
    color: var(--color-black);
    font-size: 1.25rem;
    margin-top: 4px;
}

.equipment-list-strong {
    color: var(--color-black);
    font-size: 1.1rem;
}

/* 客户评价样式 */
.testimonial {
    background-color: var(--color-off-white);
    padding: var(--spacing-lg);
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
    border-left: 4px solid var(--color-black);
}

.testimonial:last-child {
    margin-bottom: 0;
}

.testimonial-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-gray);
    font-style: italic;
    margin-bottom: var(--spacing-md);
}

.testimonial-author {
    font-weight: 600;
    color: var(--color-black);
}

/* 列表样式 - 用于质量页面 */
.quality-list-container {
    max-width: 800px;
    margin: 0 auto;
}

.quality-list {
    list-style: none;
    padding: 0;
}

.quality-list-item {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

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

.quality-list-icon {
    color: var(--color-black);
    margin-top: 4px;
    flex-shrink: 0;
}

/* 文本大小变体 */
.font-size-095 {
    font-size: 0.95rem;
}

.font-size-09 {
    font-size: 0.9rem;
}

/* 表格样式 */
.table-container {
    max-width: 1000px;
    margin: 0 auto;
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--color-white);
    border-radius: 8px;
    overflow: hidden;
}

.table-header {
    background-color: var(--color-black);
    color: var(--color-white);
}

.table-header th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
}

.table-row {
    border-bottom: 1px solid var(--color-border);
}

.table-row:last-child {
    border-bottom: none;
}

.table-cell {
    padding: var(--spacing-md);
    color: var(--color-gray);
}

.table-cell-bold {
    padding: var(--spacing-md);
    color: var(--color-black);
    font-weight: 600;
}

/* 图片库项目说明样式 */
.gallery-item-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-md);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.7) 70%, transparent 100%);
    color: var(--color-white);
    transform: translateY(100%);
    transition: transform var(--transition-normal);
    z-index: 2;
}

.gallery-item:hover .gallery-item-caption {
    transform: translateY(0);
}

.gallery-item-title {
    font-weight: 600;
    color: var(--color-white);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.gallery-item-description {
    font-size: 0.9rem;
    color: var(--color-lightest-gray);
    line-height: 1.5;
    margin-bottom: 0;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

/* 按钮组居中 */
.btn-group-center {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* 按钮轮廓白色样式 */
.btn-outline-white {
    background-color: transparent;
    border: 2px solid var(--color-white);
    color: var(--color-white);
}

/* Margin top 工具类 */
.mt-md {
    margin-top: var(--spacing-md);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

/* 服务卡片样式 */
.service-card-padded {
    padding: var(--spacing-lg);
}

.service-icon-large {
    font-size: 3rem;
    color: var(--color-black);
    margin-bottom: var(--spacing-md);
}

.service-key-info {
    color: var(--color-gray);
    font-size: 0.9rem;
    margin-top: var(--spacing-sm);
}

/* Grid 布局 */
.grid-auto-fit {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.gap-lg {
    gap: var(--spacing-lg);
}

/* 特性列表样式 */
.feature-list-grid {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.feature-list-item {
    display: flex;
    align-items: start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background-color: var(--color-off-white);
    border-radius: 8px;
}

.feature-list-icon {
    color: var(--color-black);
    font-size: 1.25rem;
    margin-top: 4px;
}

.feature-list-text {
    color: var(--color-gray);
}

/* 优势项目盒子样式 */
.advantage-item-boxed {
    text-align: left;
    padding: var(--spacing-lg);
    background-color: var(--color-off-white);
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

/* 资源项目标题 */
.resource-item-title {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-black);
}

/* 服务最佳用途样式 */
.service-best-for {
    color: var(--color-gray);
    line-height: 1.8;
    margin-top: var(--spacing-sm);
    font-size: 0.95rem;
}

/* 服务卡片「Learn More」链接 */
.service-learn-more {
    display: inline-flex;
    align-items: center;
    gap: 0.35em;
    margin-top: var(--spacing-sm);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-black);
    text-decoration: none;
    transition: color var(--transition-normal), gap var(--transition-normal);
}
.service-learn-more:hover {
    color: var(--color-medium-gray);
    gap: 0.5em;
}
.service-learn-more .fa-arrow-right {
    font-size: 0.85em;
}

/* 表格阴影样式 */
.comparison-table-shadow {
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* Gap XL */
.gap-xl {
    gap: var(--spacing-xl);
}

/* 服务图标 XL */
.service-icon-xl {
    font-size: 4rem;
    color: var(--color-black);
    margin-bottom: var(--spacing-md);
}

/* 服务卡片居中 */
.service-card-centered {
    text-align: center;
}

/* 部门标题 */
.department-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-black);
    border-bottom: 2px solid var(--color-black);
    padding-bottom: var(--spacing-xs);
}

/* 部门列表 */
.department-list {
    list-style: none;
    padding: 0;
}

.department-list-item {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

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

.department-list-icon {
    color: var(--color-black);
}

/* 表格行交替背景 */
.table-row-alt {
    background-color: var(--color-off-white);
}

/* 特性列表紧凑网格 */
.feature-list-grid-compact {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* 特性列表项带边框 */
.feature-list-item-bordered {
    border-left: 4px solid var(--color-black);
}

/* 信息框样式 */
.info-box {
    max-width: 800px;
    margin: var(--spacing-lg) auto 0;
    padding: var(--spacing-md);
    background-color: var(--color-white);
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

.info-box-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-black);
}

/* 资源页面布局 */
.resources-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

/* 精选资源卡片 */
.featured-resource-card {
    background-color: var(--color-off-white);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.featured-resource-image {
    height: 300px;
    background: linear-gradient(to right, rgba(10,10,10,0.7), rgba(26,26,26,0.6)), url(http://cnc.r350.com/wp-content/themes/cnc/assets/images/CNCserice.jpg);
    background-size: cover;
    background-position: center;
}

.featured-resource-content {
    padding: var(--spacing-lg);
}

.featured-resource-title {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-black);
}

/* 资源标签 */
.resource-tag {
    display: inline-block;
    background-color: var(--color-black);
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.resource-tag-large {
    padding: 4px 12px;
    font-size: 0.85rem;
    margin-bottom: var(--spacing-sm);
}

.resource-tag-small {
    font-size: 0.75rem;
}

/* 热门资源列表 */
.popular-resources-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-black);
}

.popular-resources-list {
    list-style: none;
    padding: 0;
}

.popular-resource-item {
    padding: var(--spacing-md);
    background-color: var(--color-off-white);
    border-radius: 8px;
    margin-bottom: var(--spacing-sm);
    border-left: 4px solid var(--color-black);
}

.popular-resource-item:last-child {
    margin-bottom: 0;
}

.popular-resource-title {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-black);
}

.resource-link {
    color: inherit;
    text-decoration: none;
}

/* 容器宽度 */
.container-900 {
    max-width: 900px;
    margin: 0 auto;
}

.container-800 {
    max-width: 800px;
}

.container-1400 {
    max-width: 1400px;
}

/* 客户评价盒子 */
.testimonial-box {
    background-color: var(--color-off-white);
    padding: var(--spacing-xl);
    border-radius: 8px;
    border-left: 4px solid var(--color-black);
}

.testimonial-content {
    display: flex;
    gap: var(--spacing-lg);
    align-items: start;
}

.testimonial-avatar {
    flex-shrink: 0;
}

.testimonial-avatar-image {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(to right, rgba(10,10,10,0.7), rgba(26,26,26,0.6)), url(http://cnc.r350.com/wp-content/themes/cnc/assets/images/CNCserice.jpg);
    background-size: cover;
    background-position: center;
    border: 3px solid var(--color-black);
}

.testimonial-text-wrapper {
    flex: 1;
}

.testimonial-quote {
    margin: 0;
    padding: 0;
    border: none;
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-gray);
    font-style: italic;
    margin-bottom: var(--spacing-md);
}

/* News 页面样式 */
.news-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.news-main {
    min-width: 0;
}

.news-sidebar {
    min-width: 0;
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    position: relative;
}

.news-list::before,
.news-list::after {
    display: none !important;
    content: none !important;
}

/* 确保 news 页面的 timeline 不显示竖线 */
.timeline.news-list-no-line::before {
    display: none !important;
    content: none !important;
}

.timeline.news-list-no-line .timeline-item {
    flex-direction: row !important;
    margin-left: 0;
    margin-right: 0;
    margin-bottom: var(--spacing-xl);
}

.timeline.news-list-no-line .timeline-item:last-child {
    margin-bottom: 0;
}

.timeline.news-list-no-line .timeline-item .news-item {
    width: 100%;
    margin: 0;
    padding: 0;
    border-bottom: none;
}

.news-item {
    margin-bottom: 0;
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    position: relative;
}

.news-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.timeline-item:last-child .news-item {
    border-bottom: none;
    padding-bottom: 0;
}

.news-date {
    color: var(--color-gray);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.news-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.news-title a {
    color: var(--color-black);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.news-excerpt {
    color: var(--color-gray);
    line-height: 1.7;
    margin-bottom: 0;
}

.sidebar-widget {
    background-color: var(--color-off-white);
    padding: var(--spacing-lg);
    border-radius: 8px;
    border: 1px solid var(--color-border);
    margin-bottom: var(--spacing-lg);
}

.sidebar-widget:last-child {
    margin-bottom: 0;
}

.sidebar-widget h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-black);
}

.sidebar-widget-dark {
    background: linear-gradient(to bottom, var(--color-black), rgba(26,26,26,0.95));
    color: var(--color-white);
    border: none;
}

.sidebar-widget-dark h3 {
    color: var(--color-white);
}

.sidebar-widget-dark p {
    color: var(--color-lightest-gray);
}

.sidebar-widget-dark-text {
    color: rgba(255,255,255,0.9);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.sidebar-widget-text {
    color: var(--color-gray);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

/* Press Contact 样式 */
.press-contact-intro {
    color: var(--color-gray);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.press-contact-label {
    color: var(--color-black);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.press-contact-info {
    color: var(--color-gray);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.press-contact-info:last-child {
    margin-bottom: 0;
}

/* FAQ 页面样式 */
.faq-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.faq-main {
    min-width: 0;
}

.faq-sidebar {
    min-width: 0;
}

.faq-category {
    margin-bottom: var(--spacing-xl);
}

.faq-category-title {
    font-size: 1.75rem;
    color: var(--color-black);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-black);
}

.faq-item {
    background-color: var(--color-off-white);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
    overflow: hidden;
}

.faq-question {
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--color-black);
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background-color: rgba(0,0,0,0.05);
}

.faq-question i {
    transition: transform 0.3s ease;
    color: var(--color-black);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 var(--spacing-lg);
}

.faq-item.active .faq-answer {
    max-height: 2000px;
    padding: var(--spacing-md) var(--spacing-lg) var(--spacing-lg);
}

/* Archive FAQ 样式 */
.archive-layout-faq .faq-item {
    margin-bottom: var(--spacing-md);
}

.archive-layout-faq .faq-answer-content {
    color: var(--color-gray);
    line-height: 1.8;
}

.archive-layout-faq .faq-answer-content p {
    margin-bottom: var(--spacing-sm);
}

.faq-answer p {
    color: var(--color-gray);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.quick-nav-list {
    list-style: none;
    padding: 0;
}

.quick-nav-list li {
    margin-bottom: var(--spacing-sm);
}

.quick-nav-list a {
    color: var(--color-gray);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: color 0.3s ease;
    padding: var(--spacing-xs) 0;
}

.quick-nav-list a:hover {
    color: var(--color-black);
}

/* FAQ 页面响应式 */
@media (max-width: 968px) {
    .faq-layout {
        grid-template-columns: 1fr;
    }
}

/* Blog 页面样式 */
.blog-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.blog-main {
    min-width: 0;
}

.blog-sidebar {
    min-width: 0;
}

.featured-post {
    background-color: var(--color-white);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-medium);
}

.featured-post-image {
    position: relative;
    height: 400px;
    overflow: hidden;
    background-color: #f5f5f5;
}

.featured-post-image-placeholder {
    background-color: #fafafa;
}

.featured-post-image a {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.featured-post-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

.featured-post-content {
    padding: var(--spacing-lg);
    background-color: var(--color-white);
}

.post-tag {
    display: inline-block;
    background-color: var(--color-black);
    color: white;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.post-card {
    background-color: #ffffff;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: var(--shadow-light);
}

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

.post-card-image {
    position: relative;
    height: 200px;
    overflow: hidden;
    background-color: #f5f5f5;
}

.post-card-image-placeholder {
    background-color: #fafafa;
}

.post-card-image a {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.post-card-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

.post-card-content {
    padding: var(--spacing-md);
    background-color: #ffffff;
}

.post-card-image-placeholder-link,
.featured-post-image-placeholder-link {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.post-date {
    color: var(--color-medium-gray);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.blog-post-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-black);
    font-weight: 700;
    line-height: 1.3;
}

.blog-post-title a {
    color: var(--color-black);
    text-decoration: none;
}

.blog-post-title a:hover {
    color: var(--color-black);
    text-decoration: underline;
}

.blog-post-link-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-black);
    font-weight: 600;
}

.blog-post-link {
    color: var(--color-black);
    text-decoration: none;
}

.blog-post-link:hover {
    color: var(--color-black);
    text-decoration: underline;
}

.blog-post-description {
    color: var(--color-medium-gray);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
}

.blog-post-card-description {
    color: var(--color-medium-gray);
    line-height: 1.7;
    font-size: 0.95rem;
}

.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
}

.pagination a, .pagination span {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    color: var(--color-gray);
    text-decoration: none;
    transition: all 0.3s ease;
}

.pagination a:hover {
    background-color: var(--color-black);
    color: white;
    border-color: var(--color-black);
}

.pagination .current {
    background-color: var(--color-black);
    color: white;
    border-color: var(--color-black);
}

/* Blog 页面响应式 */
@media (max-width: 968px) {
    .blog-layout {
        grid-template-columns: 1fr;
    }
}

/* Design Guides 页面样式 */
.guides-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.guides-main {
    min-width: 0;
}

.guides-sidebar {
    min-width: 0;
}

.guide-card {
    display: flex;
    gap: var(--spacing-lg);
    background-color: var(--color-off-white);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.guide-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.guide-icon {
    font-size: 3rem;
    color: var(--color-black);
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-white);
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

.guide-content {
    flex: 1;
    min-width: 0;
}

.guide-tag {
    display: inline-block;
    background-color: var(--color-black);
    color: white;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.guide-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-black);
}

.guide-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

.guide-title a:hover {
    color: var(--color-medium-gray);
}

.guide-description {
    color: var(--color-gray);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.guide-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.btn-outline-gray {
    border-color: var(--color-border);
    color: var(--color-gray);
}

.btn-outline-gray:hover {
    border-color: var(--color-black);
    color: var(--color-black);
    background-color: var(--color-white);
}

/* Design Guides 页面响应式 */
@media (max-width: 968px) {
    .guides-layout {
        grid-template-columns: 1fr;
    }
    
    .guide-card {
        flex-direction: column;
    }
    
    .guide-icon {
        width: 60px;
        height: 60px;
        font-size: 2rem;
    }
}

/* Single Post (News Article Detail) 页面样式 */
.single-post-main {
    padding-top: var(--spacing-md);
    /* padding-bottom: var(--spacing-xl); */
}

.single-post-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.single-post-article {
    background-color: var(--color-white);
}

/* Single Post Header */
.single-post-header {
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--color-border);
}

.single-post-category {
    margin-bottom: var(--spacing-sm);
}

.single-post-category a {
    display: inline-block;
    background-color: var(--color-black);
    color: var(--color-white);
    padding: 6px 16px;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: background-color var(--transition-fast);
}

.single-post-category a:hover {
    background-color: var(--color-medium-gray);
}

.single-post-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    font-family: var(--font-heading);
}

.single-post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    align-items: center;
    color: var(--color-gray);
    font-size: 0.95rem;
}

.single-post-date,
.single-post-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.single-post-date i,
.single-post-author i {
    font-size: 0.875rem;
}

.single-post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-left: auto;
}

.single-post-tags .tag-link {
    color: var(--color-gray);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.single-post-tags .tag-link:hover {
    color: var(--color-black);
}

/* Featured Image */
.single-post-featured-image {
    margin: var(--spacing-lg) 0;
}

.single-post-featured-image .featured-image {
    width: 100%;
    height: auto;
    border-radius: 8px;
    display: block;
}

/* Content Layout - 上下空隙减半，与 CTA 下方一致 */
.single-post-content-wrapper {
    padding: calc(var(--spacing-xl) / 2) 0;
}

.single-post-layout {
    display: block;
}

.single-post-main-content {
    min-width: 0;
}

/* 相关文章两列，CTA 单独一行横排，空隙减半 */
.single-post-below {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--spacing-lg) / 2);
    margin-top: calc(var(--spacing-xl) / 2);
    padding-top: calc(var(--spacing-xl) / 2);
    border-top: 1px solid var(--color-border);
}

.single-post-below .sidebar-widget {
    min-width: 0;
}

.single-post-below .sidebar-widget-dark {
    grid-column: 1 / -1;
    padding: calc(var(--spacing-lg) / 2);
}

.single-post-content {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-gray);
    margin-bottom: calc(var(--spacing-xl) / 2);
}

.single-post-content h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-black);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-heading);
}

.single-post-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-black);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-heading);
}

.single-post-content p {
    margin-bottom: var(--spacing-md);
}

.single-post-content ul,
.single-post-content ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-md);
}

.single-post-content li {
    margin-bottom: var(--spacing-xs);
}

.single-post-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: var(--spacing-md) 0;
}

.single-post-content a {
    color: var(--color-black);
    text-decoration: underline;
    transition: color var(--transition-fast);
}

.single-post-content a:hover {
    color: var(--color-medium-gray);
}

/* Share Buttons - 直接接在文章末尾，无单独底色 */
/* .single-post-share {
    padding: var(--spacing-md) 0;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
} */

.share-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: var(--spacing-sm);
}

.share-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.share-button {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background-color: var(--color-white);
    color: var(--color-black);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.share-button:hover {
    background-color: var(--color-off-white);
    border-color: var(--color-black);
    transform: translateY(-2px);
}

.share-facebook:hover {
    background-color: #1877F2;
    color: var(--color-white);
    border-color: #1877F2;
}

.share-twitter:hover {
    background-color: #1DA1F2;
    color: var(--color-white);
    border-color: #1DA1F2;
}

.share-linkedin:hover {
    background-color: #0A66C2;
    color: var(--color-white);
    border-color: #0A66C2;
}

.share-copy:hover {
    background-color: var(--color-black);
    color: var(--color-white);
    border-color: var(--color-black);
}

.share-copy.copied {
    background-color: var(--color-black);
    color: var(--color-white);
    border-color: var(--color-black);
}

.share-button i {
    font-size: 1rem;
}

/* Post Navigation */
.single-post-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--spacing-xl);
}

.nav-previous,
.nav-next {
    padding: var(--spacing-md);
}

.nav-previous {
    border-right: 1px solid var(--color-border);
    padding-right: var(--spacing-lg);
}

.nav-next {
    text-align: right;
    padding-left: var(--spacing-lg);
}

.nav-label {
    display: block;
    font-size: 0.875rem;
    color: var(--color-gray);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-previous a,
.nav-next a {
    color: var(--color-black);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.nav-previous a:hover,
.nav-next a:hover {
    color: var(--color-medium-gray);
}

.nav-previous h4,
.nav-next h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
    line-height: 1.4;
}

/* Sidebar */
.single-post-sidebar {
    min-width: 0;
}

.related-posts-widget,
.random-posts-widget {
    margin-bottom: var(--spacing-lg);
}

.widget-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-black);
}

.related-posts-list,
.random-posts-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.related-post-item,
.random-post-item {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
}

.related-post-item:last-child,
.random-post-item:last-child {
    border-bottom: none;
}

.related-post-thumb,
.random-post-thumb {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    border-radius: 4px;
    overflow: hidden;
    display: block;
}

.related-post-thumb img,
.random-post-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.related-post-content,
.random-post-content {
    flex: 1;
    min-width: 0;
}

.related-post-title,
.random-post-title {
    display: block;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-black);
    text-decoration: none;
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
    transition: color var(--transition-fast);
}

.related-post-title:hover,
.random-post-title:hover {
    color: var(--color-medium-gray);
}

.related-post-date,
.random-post-date {
    display: block;
    font-size: 0.875rem;
    color: var(--color-gray);
}

/* Single Post Footer */
.single-post-footer {
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--color-border);
}

.edit-link {
    font-size: 0.875rem;
}

.edit-link a {
    color: var(--color-gray);
    text-decoration: none;
}

.edit-link a:hover {
    color: var(--color-black);
}

/* Single Post 响应式 */
@media (max-width: 968px) {
    .single-post-title {
        font-size: 2rem;
    }
    
    .single-post-below {
        grid-template-columns: 1fr;
    }
    .single-post-below .sidebar-widget-dark {
        grid-column: 1;
    }
    
    .single-post-navigation {
        grid-template-columns: 1fr;
    }
    
    .nav-previous {
        border-right: none;
        border-bottom: 1px solid var(--color-border);
        padding-right: 0;
        padding-bottom: var(--spacing-lg);
        margin-bottom: var(--spacing-lg);
    }
    
    .nav-next {
        padding-left: 0;
    }
    
    .share-buttons {
        flex-direction: column;
    }
    
    .share-button {
        width: 100%;
        justify-content: center;
    }
}

/* Archive (分类列表) 页面样式 */
.archive-main {
    padding-top: var(--spacing-md);
    padding-bottom: var(--spacing-xl);
}

.archive-layout-blog,
.archive-layout-news,
.archive-layout-faq,
.archive-layout-design-guides {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

/* 默认 Archive 布局 */
.archive-layout-default {
    max-width: 900px;
    margin: 0 auto;
}

.archive-post-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background-color: var(--color-off-white);
    border-radius: 8px;
    border: 1px solid var(--color-border);
    margin-bottom: var(--spacing-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.archive-post-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.archive-post-thumbnail {
    flex-shrink: 0;
    width: 200px;
    height: 150px;
    border-radius: 4px;
    overflow: hidden;
}

.archive-post-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.archive-post-content {
    flex: 1;
    min-width: 0;
}

.archive-post-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-black);
}

.archive-post-title a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.archive-post-title a:hover {
    color: var(--color-medium-gray);
}

.archive-post-meta {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--color-gray);
}

.archive-post-date {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.archive-post-category a {
    color: var(--color-gray);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.archive-post-category a:hover {
    color: var(--color-black);
}

.archive-post-excerpt {
    color: var(--color-gray);
    line-height: 1.7;
    margin-bottom: var(--spacing-sm);
}

.archive-post-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-black);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.archive-post-link:hover {
    color: var(--color-medium-gray);
}

/* Archive 响应式 */
@media (max-width: 968px) {
    .archive-layout-blog,
    .archive-layout-news,
    .archive-layout-faq,
    .archive-layout-design-guides {
        grid-template-columns: 1fr;
    }
    
    .archive-post-item {
        flex-direction: column;
    }
    
    .archive-post-thumbnail {
        width: 100%;
        height: 200px;
    }
}

.category-list {
    list-style: none;
    padding: 0;
}

.category-list li {
    margin-bottom: var(--spacing-sm);
}

.category-list a {
    color: var(--color-gray);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: color var(--transition-fast);
}

.category-list a:hover {
    color: var(--color-black);
}

.contact-label {
    color: var(--color-black);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.contact-info {
    color: var(--color-gray);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.btn-white {
    background-color: var(--color-white);
    color: var(--color-black);
}

.btn-white:hover {
    background-color: var(--color-lightest-gray);
    color: var(--color-black);
}

/* 全球办公室布局样式 */
.global-offices-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.office-map {
    position: relative;
    min-height: 400px;
    background-color: var(--color-off-white);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.office-map iframe {
    width: 100%;
    height: 100%;
    min-height: 400px;
    border: none;
    display: block;
}

.map-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 400px;
    padding: var(--spacing-lg);
    text-align: center;
}

.office-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.office-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

.office-icon {
    font-size: 2.5rem;
    color: var(--color-black);
    margin-bottom: var(--spacing-md);
}

.office-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-black);
}

.office-description {
    color: var(--color-gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.office-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.office-detail-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    color: var(--color-gray);
    line-height: 1.7;
}

.office-detail-item i {
    color: var(--color-black);
    margin-top: 4px;
    flex-shrink: 0;
}

/* 承诺内容样式 */
.commitment-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.commitment-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.commitment-icon {
    font-size: 2rem;
    color: var(--color-black);
    flex-shrink: 0;
    margin-top: 4px;
}

.commitment-text {
    flex: 1;
}

.commitment-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-black);
}

.commitment-desc {
    color: var(--color-gray);
    line-height: 1.7;
    margin-bottom: 0;
}

/* ========================================
   材料管理系统样式
   ======================================== */

/* 材料筛选器容器 - 全宽布局 */
.materials-filters-wrapper {
    width: 100%;
    margin-bottom: var(--spacing-xl);
}

/* 材料筛选器 - 三个大类横着排列 */
.materials-filters {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    align-items: flex-start;
}

/* 每个大类 - 内部选项竖着排列 */
.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    min-width: 200px;
    flex: 1;
    max-width: 300px;
}

.filter-group-title {
    font-weight: 600;
    color: var(--color-black);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    user-select: none;
    padding: var(--spacing-xs) 0;
}

.filter-group-title::after {
    content: '▲';
    font-size: 0.7rem;
    color: var(--color-gray);
    transition: transform var(--transition-normal);
    margin-left: auto;
    padding-left: var(--spacing-xs);
}

.filter-group.collapsed .filter-group-title::after {
    transform: rotate(180deg);
}

.filter-group.collapsed .filter-checkboxes {
    display: none;
}

.filter-checkboxes {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 400px;
    overflow-y: auto;
    padding: 12px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background-color: var(--color-white);
    margin-top: var(--spacing-xs);
}

.filter-checkbox-item {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 4px 0;
    user-select: none;
    transition: color var(--transition-fast);
}

.filter-checkbox-item:hover {
    color: var(--color-primary);
}

.material-filter-checkbox {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--color-primary);
    flex-shrink: 0;
}

.filter-checkbox-item span {
    font-size: 0.9rem;
    color: var(--color-black);
    line-height: 1.4;
}

.filter-checkbox-item:hover span {
    color: var(--color-primary);
}

.material-filter-checkbox:checked + span {
    font-weight: 500;
    color: var(--color-primary);
}

/* 材料比较网格 - 改为列表布局 */
.materials-comparison-grid {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-bottom: var(--spacing-xl);
}

.material-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    border-radius: 0;
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    margin-bottom: 0;
}

.material-card:first-child {
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
}

.material-card:last-child {
    border-bottom-left-radius: 8px;
    border-bottom-right-radius: 8px;
    border-bottom: 1px solid var(--color-border);
}

.material-card:hover {
    background-color: var(--color-off-white);
}

.material-card-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    width: 100%;
}

.material-card-image {
    width: 120px;
    min-width: 120px;
    height: 120px;
    border-radius: 4px;
    overflow: hidden;
    background-color: var(--color-off-white);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    flex-shrink: 0;
}

.material-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-normal);
}

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

.material-card-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    min-width: 0;
}

.material-card-header {
    margin-bottom: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.material-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: 0;
    line-height: 1.3;
}

.material-card-attributes {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: 0;
}

.material-attribute-badge,
.material-attribute-tag {
    display: inline-block;
    padding: 4px 10px;
    background-color: var(--color-off-white);
    color: var(--color-black);
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 500;
}

.material-attribute-more {
    display: inline-block;
    padding: 4px 10px;
    color: var(--color-gray);
    font-size: 0.85rem;
}

.material-card-description {
    color: var(--color-gray);
    line-height: 1.6;
    margin-bottom: 0;
    flex-grow: 1;
    font-size: 0.95rem;
}

.material-description-link {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-normal);
    cursor: pointer;
    display: block;
}

.material-description-link:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

.material-card-actions {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    margin-left: auto;
}

.material-card-details {
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
    display: none;
}

.material-card-details.expanded {
    display: block;
}

.material-card-footer {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: flex-start;
}

.material-expand-btn {
    background: none;
    border: none;
    color: var(--color-black);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    padding: var(--spacing-xs) 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: color var(--transition-normal);
}

.material-expand-btn:hover {
    color: var(--color-medium-gray);
}

.material-expand-btn i {
    transition: transform var(--transition-normal);
}

.material-expand-btn.expanded i {
    transform: rotate(180deg);
}

.material-card-properties {
    margin-top: 0;
    padding-top: 0;
}

.properties-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--spacing-sm) var(--spacing-md);
    padding: var(--spacing-xs) 0;
}

@media (max-width: 1024px) {
    .properties-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-sm);
        row-gap: var(--spacing-xs);
    }
}

@media (max-width: 480px) {
    .properties-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xs);
    }
}

.property-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 0;
}

.property-item-full {
    grid-column: 1 / -1;
    margin-top: var(--spacing-xs);
}

.property-name {
    color: var(--color-gray);
    font-size: 0.85rem;
    line-height: 1.2;
    margin-bottom: 2px;
}

.property-value {
    color: var(--color-black);
    font-weight: 500;
    font-size: 0.95rem;
    line-height: 1.3;
}

.property-value-secondary {
    display: block;
    font-size: 0.85em;
    color: var(--color-gray);
    margin-top: 2px;
}

.material-card-actions {
    margin-top: auto;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.9rem;
}

.material-card.hidden {
    display: none;
}

.no-materials {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-gray);
}

/* 材料详情页面样式 */
.breadcrumbs {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
    font-size: 0.9rem;
    color: var(--color-gray);
}

.breadcrumbs a {
    color: var(--color-black);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.breadcrumbs a:hover {
    color: var(--color-medium-gray);
}

/* 材料详情页 - 扁平化布局 */
.material-detail-header {
    margin-bottom: var(--spacing-md);
    text-align: center;
    clear: both;
}

/* 确保材料详情页的section-container子元素垂直排列 */
/* 描述和图片模块保持grid布局（左右分布） */
.section-container > .material-description-image-section {
    display: grid !important;
    grid-template-columns: 1fr 400px !important;
    width: 100% !important;
    float: none !important;
    clear: both !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
    box-sizing: border-box !important;
}

/* 其他模块保持block布局（上下垂直排列） */
.section-container > .material-content-section,
.section-container > .material-properties-wrapper,
.section-container > .material-properties-section,
.section-container > .material-detail-actions {
    display: block !important;
    width: 100% !important;
    float: none !important;
    clear: both !important;
    position: relative !important;
    left: auto !important;
    right: auto !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
    grid-column: 1 / -1 !important;
    flex-basis: 100% !important;
    flex-grow: 0 !important;
    flex-shrink: 0 !important;
    box-sizing: border-box !important;
}

/* 确保section-container本身不会影响子元素布局 */
.section-container {
    display: block !important;
    box-sizing: border-box !important;
}

/* 强制材料详情页的所有模块垂直排列 - 覆盖所有可能的布局 */
.section-container .material-description-image-section,
.section-container .material-content-section,
.section-container .material-properties-wrapper,
.section-container .material-properties-section,
.section-container .material-detail-actions {
    max-width: 100% !important;
}

/* 确保描述图片模块后的所有元素都是block布局 */
.section-container .material-description-image-section ~ * {
    display: block !important;
    width: 100% !important;
    clear: both !important;
    float: none !important;
    position: relative !important;
    left: auto !important;
    right: auto !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
    grid-column: 1 / -1 !important;
    flex-basis: 100% !important;
}

/* 但描述图片模块本身保持grid布局 */
.section-container .material-description-image-section {
    display: grid !important;
    grid-template-columns: 1fr 400px !important;
}

.material-detail-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: 0;
    line-height: 1.2;
}

/* 描述和图片 - 左右分布模块 */
.material-description-image-section {
    display: grid !important;
    grid-template-columns: 1fr 400px !important;
    gap: calc(var(--spacing-md) * 2);
    align-items: center;
    margin-bottom: calc(var(--spacing-md) / 3);
    padding: var(--spacing-md);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    clear: both !important;
    width: 100% !important;
    float: none !important;
    position: relative !important;
    grid-column: 1 / -1 !important;
}

.material-description-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    min-height: 300px;
}

.material-description-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-gray);
    text-align: left;
    width: 100%;
}

.material-description-text p {
    margin: 0;
    margin-bottom: var(--spacing-md);
}

.material-description-text p:last-child {
    margin-bottom: 0;
}

.material-detail-image-wrapper {
    width: 100%;
    max-width: 400px;
    border-radius: 8px;
    overflow: hidden;
    background-color: var(--color-off-white);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: transform var(--transition-normal);
}

/* 材料页与型号页统一：右侧图列为 400px 宽，图片固定显示尺寸 */
.section-container > .material-description-image-section > .material-detail-image-wrapper,
.section-container > .material-description-image-section > .material-detail-image-wrapper--model {
    width: 100%;
    max-width: 400px;
}

.material-detail-image-wrapper:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
}

.material-featured-image {
    width: 100%;
    max-width: 100%;
    height: auto;
    max-height: 400px;
    object-fit: cover;
    display: block;
    border-radius: 8px;
    transition: transform var(--transition-normal);
}

.material-detail-image-wrapper:hover .material-featured-image {
    transform: scale(1.02);
}

/* 文字内容模块 - 无边框 */
.material-content-section {
    display: block !important;
    width: 100% !important;
    clear: both !important;
    float: none !important;
    position: relative !important;
    left: auto !important;
    right: auto !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
    grid-column: 1 / -1 !important;
    flex-basis: 100% !important;
    margin-bottom: calc(var(--spacing-xs) / 3);
    padding: 0;
    line-height: 1.8;
    color: var(--color-gray);
}

.material-content-section p {
    margin-bottom: var(--spacing-md);
}

.material-content-section h2,
.material-content-section h3,
.material-content-section h4 {
    color: var(--color-black);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}


/* 材料属性包装器 */
.material-properties-wrapper {
    display: block !important;
    width: 100% !important;
    clear: both !important;
    float: none !important;
    position: relative !important;
    left: auto !important;
    right: auto !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
    grid-column: 1 / -1 !important;
    flex-basis: 100% !important;
    margin-top: calc(var(--spacing-xs) / 3);
    margin-bottom: var(--spacing-md);
}

.material-properties-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--color-black);
}

/* 材料属性模块 - 无边框 */
.material-properties-section {
    display: block !important;
    width: 100% !important;
    clear: both !important;
    float: none !important;
    position: relative !important;
    left: auto !important;
    right: auto !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
    grid-column: 1 / -1 !important;
    flex-basis: 100% !important;
    padding: 0;
    margin-bottom: 0;
}

/* 分割线 - 全宽显示 */
.material-section-divider {
    width: 100% !important;
    max-width: 100% !important;
    height: 1px;
    background-color: var(--color-border);
    margin: var(--spacing-xs) 0;
    box-sizing: border-box;
    display: block;
    position: relative;
    left: 0;
    right: 0;
}

.properties-table {
    width: 100% !important;
    max-width: 100% !important;
    border-collapse: collapse;
    margin: 0;
    table-layout: auto;
}

.properties-table td {
    padding: var(--spacing-sm) var(--spacing-xs);
    border-bottom: 1px solid var(--color-border);
}

.properties-table tr:last-child td {
    border-bottom: none;
}

.property-label {
    font-weight: 600;
    color: var(--color-black);
    width: auto;
    min-width: 200px;
    padding-right: var(--spacing-md);
    white-space: nowrap;
}

.property-value {
    color: var(--color-gray);
}

.property-value-secondary {
    display: block;
    font-size: 0.9em;
    color: var(--color-medium-gray);
    margin-top: 4px;
}

/* 按钮区域 - 无模块化样式 */
.material-detail-actions {
    display: flex;
    gap: calc(var(--spacing-md) * 2);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
    width: 100%;
}

/* 在描述内容区域内的按钮样式 */
.material-description-content .material-detail-actions {
    margin-top: var(--spacing-lg);
    margin-bottom: 0;
    justify-content: center;
    width: 100%;
}

/* 相关材料卡片区域 */
.related-materials-section {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    width: 100%;
    clear: both;
}

.related-materials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.related-material-card {
    background: var(--color-white);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.related-material-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.related-material-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background-color: var(--color-off-white);
}

.related-material-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

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

.related-material-content {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.related-material-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 0 var(--spacing-sm) 0;
    color: var(--color-black);
    line-height: 1.4;
}

.related-material-title a {
    color: var(--color-black);
    text-decoration: none;
    transition: color var(--transition-normal);
}

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

.related-material-description {
    color: var(--color-gray);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-top: var(--spacing-xs);
    flex: 1;
}

.related-material-description p {
    margin: 0 0 var(--spacing-xs) 0;
}

.related-material-description p:last-child {
    margin-bottom: 0;
}

/* 型号导航卡片区域 - 全屏宽度独立 section */
.model-nav-fullwidth-section {
    width: 100%;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
    box-sizing: border-box;
}

.model-nav-section-inner {
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
}

.model-nav-section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 var(--spacing-lg) 0;
    color: var(--color-black);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.model-nav-section-title i {
    color: var(--color-gray);
    font-size: 1.1rem;
}

.model-nav-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.model-nav-card {
    background: var(--color-white);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.model-nav-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
}

.model-nav-card-image {
    width: 100%;
    height: 180px;
    overflow: hidden;
    background-color: var(--color-off-white);
}

.model-nav-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.model-nav-card:hover .model-nav-card-image img {
    transform: scale(1.03);
}

.model-nav-card-content {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.model-nav-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0 0 var(--spacing-sm) 0;
    color: var(--color-black);
    line-height: 1.4;
}

.model-nav-card-description {
    color: var(--color-gray);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    flex: 1;
}

.model-nav-card-description p {
    margin: 0 0 var(--spacing-xs) 0;
}

.model-nav-card-description p:last-child {
    margin-bottom: 0;
}

.model-nav-card-btn {
    display: inline-block;
    padding: 10px 20px;
    border: 2px solid var(--color-gray);
    color: var(--color-gray);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-decoration: none;
    text-align: center;
    transition: border-color var(--transition-normal), color var(--transition-normal);
    align-self: flex-start;
}

.model-nav-card-btn:hover {
    background: var(--color-black);
    border-color: var(--color-black);
    color: var(--color-white);
}

/* 材料详情页响应式设计 */
@media (max-width: 1024px) {
    .material-description-image-section {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .material-description-content {
        min-height: auto;
    }
    
    .material-detail-image-wrapper {
        max-width: 500px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .material-detail-title {
        font-size: 2rem;
    }
    
    .material-description-image-section,
    .material-content-section,
    .material-properties-section {
        max-width: 100%;
        padding: var(--spacing-lg);
    }
    
    .material-detail-actions {
        max-width: 100%;
    }
    
    .material-description-text {
        font-size: 1rem;
    }
    
    .material-detail-actions {
        flex-direction: column;
    }
    
    .material-detail-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .related-materials-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .model-nav-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}

@media (max-width: 1024px) {
    .model-nav-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .material-card-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .material-card-image {
        width: 100%;
        height: auto;
        aspect-ratio: 1;
    }
    
    .material-card-actions {
        margin-left: 0;
        margin-top: var(--spacing-md);
        width: 100%;
    }
    
    .properties-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
        row-gap: var(--spacing-xs);
    }
    
    .property-item-full {
        grid-column: 1 / -1;
    }
    
    .property-name {
        font-size: 0.8rem;
    }
    
    .property-value {
        font-size: 0.9rem;
    }
    
    .materials-filters {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .filter-group {
        width: 100%;
        min-width: auto;
        max-width: 100%;
    }
    
    .filter-checkboxes {
        max-height: 250px;
    }
    
    .material-detail-header {
        grid-template-columns: 1fr;
    }
    
    .material-detail-title {
        font-size: 2rem;
    }
    
    .material-detail-actions {
        flex-direction: column;
    }
    
    .material-detail-actions .btn {
        width: 100%;
    }
    
    /* Quote Form Page Mobile */
    .quote-page-container {
        padding: var(--spacing-md);
    }
    
    .quote-page-title {
        font-size: 1.75rem;
    }
    
    .quote-page-subtitle {
        font-size: 1rem;
    }
    
    .quote-form-page .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .material-card {
        padding: var(--spacing-md);
    }
    
    .material-detail-title {
        font-size: 1.75rem;
    }
    
    .material-properties-table {
        padding: var(--spacing-md);
    }
    
    .properties-table td {
        padding: var(--spacing-sm);
        font-size: 0.9rem;
    }
}