/* 变量定义 */
:root {
    /* 颜色系统 */
    --bg-primary: #111111;
    --bg-surface: #1D1D1D;
    --color-primary: #C09F6B;
    --color-accent: #EAD6A3;
    --text-primary: #E4E4E4;
    --text-secondary: #888888;
    --border-color: #333333;
    --success-color: #34D399;
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #EAD6A3 0%, #C09F6B 100%);
    --gradient-overlay: linear-gradient(135deg, rgba(234, 214, 163, 0.1) 0%, rgba(192, 159, 107, 0.2) 100%);
    
    /* 字体 */
    --font-heading: 'Lora', serif;
    --font-body: 'Inter', sans-serif;
    
    /* 间距 */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-xxl: 64px;
    --spacing-xxxl: 96px;
    --spacing-xxxxl: 128px;
    
    /* 阴影 */
    --shadow-glow: 0 0 24px rgba(192, 159, 107, 0.3);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.2);
    
    /* 动画 */
    --transition-fast: all 300ms ease;
    --transition-normal: all 400ms cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition-slow: all 600ms ease;
}

/* 全局重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-normal);
}

ul {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
    transition: var(--transition-normal);
}

input, select, textarea {
    font-family: inherit;
    border: none;
    outline: none;
    background: transparent;
    color: var(--text-primary);
}

/* 容器 */
.container {
    max-width: 1360px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* 节模块 */
.section {
    padding: var(--spacing-xxxxl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxxl);
}

.section-title {
    font-family: var(--font-heading);
    font-size: 48px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 16px 32px;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-normal);
    text-decoration: none;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(192, 159, 107, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-primary);
    color: var(--bg-primary);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

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

.btn-full {
    width: 100%;
    justify-content: center;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(17, 17, 17, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    transition: var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(17, 17, 17, 0.98);
    padding: var(--spacing-xs) 0;
    box-shadow: var(--shadow-card);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1360px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 600;
    color: var(--color-primary);
}

.nav-logo i {
    font-size: 28px;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-xl);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition-normal);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle .bar {
    width: 25px;
    height: 3px;
    background: var(--color-primary);
    transition: var(--transition-normal);
}

/* 首页横幅 */
.hero {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    animation: heroZoom 8s ease-out infinite alternate;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(17, 17, 17, 0.8) 0%, rgba(17, 17, 17, 0.6) 100%);
    z-index: 1;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    padding: 0 var(--spacing-lg);
    animation: heroFadeIn 2s ease-out;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 72px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 24px;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.hero-description {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xxl);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-primary);
    font-size: 24px;
    animation: scrollBounce 2s infinite;
}

/* 动画效果 */
@keyframes heroZoom {
    from { transform: scale(1.1); }
    to { transform: scale(1); }
}

@keyframes heroFadeIn {
    from { 
        opacity: 0;
        transform: translateY(30px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scrollBounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* 招聘职位模块 */
.jobs-section {
    background: var(--bg-surface);
}

.jobs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.job-card {
    background: var(--bg-primary);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition-normal);
    border: 1px solid var(--border-color);
}

.job-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-glow);
    border-color: var(--color-primary);
}

.job-image {
    position: relative;
    height: 280px;
    overflow: hidden;
}

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

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

.job-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(192, 159, 107, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

.job-card:hover .job-overlay {
    opacity: 1;
}

.job-overlay i {
    font-size: 48px;
    color: var(--color-primary);
}

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

.job-title {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.job-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.job-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.feature-tag {
    padding: 4px 12px;
    background: var(--border-color);
    color: var(--color-primary);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

.job-salary {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-primary);
}

/* 我们的优势模块 */
.advantages-section {
    background: var(--bg-primary);
}

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

.advantage-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--bg-surface);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.advantage-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
    border-color: var(--color-primary);
}

.advantage-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    box-shadow: var(--shadow-glow);
}

.advantage-icon i {
    font-size: 32px;
    color: var(--bg-primary);
}

.advantage-title {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.advantage-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 关于我们模块 */
.about-section {
    background: var(--bg-surface);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxxl);
    align-items: center;
}

.about-description p {
    margin-bottom: var(--spacing-lg);
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-secondary);
}

.about-stats {
    display: flex;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 48px;
    font-weight: 600;
    color: var(--color-primary);
    line-height: 1;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 16px;
    margin-top: var(--spacing-xs);
}

.about-image {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
}

.about-img {
    width: 100%;
    height: 500px;
    object-fit: cover;
}

.about-image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(17, 17, 17, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-normal);
}

.about-image-overlay:hover {
    background: rgba(192, 159, 107, 0.2);
}

.about-image-overlay i {
    font-size: 64px;
    color: var(--color-primary);
    transition: var(--transition-normal);
}

/* 案例展示模块 */
.cases-section {
    background: var(--bg-primary);
}

.cases-filter {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xxxl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 2px solid var(--border-color);
    border-radius: 25px;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition-normal);
}

.filter-btn:hover,
.filter-btn.active {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(192, 159, 107, 0.1);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.case-card {
    background: var(--bg-surface);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition-normal);
    border: 1px solid var(--border-color);
}

.case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
    border-color: var(--color-primary);
}

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

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

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

.case-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(192, 159, 107, 0.2);
    opacity: 0;
    transition: var(--transition-normal);
}

.case-card:hover .case-overlay {
    opacity: 1;
}

.case-actions {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    gap: var(--spacing-sm);
}

.case-actions i {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-primary);
    font-size: 18px;
    cursor: pointer;
    transition: var(--transition-normal);
}

.case-actions i:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
}

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

.case-title {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.case-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.case-tags {
    display: flex;
    gap: var(--spacing-xs);
}

.case-tag {
    padding: 4px 12px;
    background: rgba(192, 159, 107, 0.1);
    color: var(--color-primary);
    border-radius: 20px;
    font-size: 14px;
}

/* 招聘流程模块 */
.process-section {
    background: var(--bg-surface);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 60px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    z-index: 0;
}

.process-step {
    position: relative;
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--bg-primary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
    z-index: 1;
}

.process-step:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
    border-color: var(--color-primary);
}

.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-primary);
    font-weight: 600;
    font-size: 18px;
}

.step-icon {
    width: 80px;
    height: 80px;
    background: var(--bg-surface);
    border: 2px solid var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: var(--spacing-lg) auto var(--spacing-lg);
    transition: var(--transition-normal);
}

.process-step:hover .step-icon {
    background: var(--gradient-primary);
    box-shadow: var(--shadow-glow);
}

.step-icon i {
    font-size: 32px;
    color: var(--color-primary);
    transition: var(--transition-normal);
}

.process-step:hover .step-icon i {
    color: var(--bg-primary);
}

.step-title {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.step-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 常见问题模块 */
.faq-section {
    background: var(--bg-primary);
}

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

.faq-item {
    background: var(--bg-surface);
    border-radius: 12px;
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: var(--transition-normal);
}

.faq-item:hover {
    border-color: var(--color-primary);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: var(--transition-normal);
}

.faq-question span {
    font-size: 18px;
    font-weight: 500;
    color: var(--text-primary);
}

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

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

.faq-answer {
    padding: 0 var(--spacing-lg);
    color: var(--text-secondary);
    line-height: 1.7;
    max-height: 0;
    overflow: hidden;
    transition: all 400ms ease;
}

.faq-item.active .faq-answer {
    max-height: 200px;
    padding: 0 var(--spacing-lg) var(--spacing-lg);
}

/* 新闻资讯模块 */
.news-section {
    background: var(--bg-surface);
}

.news-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xxxl);
}

.news-card {
    background: var(--bg-primary);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

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

.news-card.featured {
    grid-row: span 2;
}

.news-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.news-card.featured .news-image {
    height: 300px;
}

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

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

.news-category {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    background: var(--gradient-primary);
    color: var(--bg-primary);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

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

.news-title {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.news-card.featured .news-title {
    font-size: 22px;
}

.news-excerpt {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.news-meta {
    display: flex;
    gap: var(--spacing-lg);
    font-size: 14px;
    color: var(--text-secondary);
}

.news-meta i {
    margin-right: var(--spacing-xs);
}

.news-more {
    text-align: center;
}

/* 联系我们模块 */
.contact-section {
    background: var(--bg-primary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxxl);
}

.contact-info {
    display: grid;
    gap: var(--spacing-xl);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--bg-surface);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.contact-item:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: var(--shadow-glow);
}

.contact-icon i {
    font-size: 24px;
    color: var(--bg-primary);
}

.contact-details h3 {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.contact-details p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.contact-form-container {
    background: var(--bg-surface);
    padding: var(--spacing-xxl);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.contact-form h3 {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    transition: var(--transition-normal);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(192, 159, 107, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-secondary);
}

.form-group select option {
    background: var(--bg-surface);
    color: var(--text-primary);
}

/* 页脚 */
.footer {
    background: var(--bg-surface);
    padding: var(--spacing-xxxl) 0 var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-xxxl);
    margin-bottom: var(--spacing-xxxl);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 600;
    color: var(--color-primary);
}

.footer-logo i {
    font-size: 32px;
}

.footer-brand p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.footer-social a {
    width: 48px;
    height: 48px;
    background: var(--bg-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: 20px;
    transition: var(--transition-normal);
    border: 1px solid var(--border-color);
}

.footer-social a:hover {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.footer-column h4 {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

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

.footer-column a {
    color: var(--text-secondary);
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 200px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-primary);
    font-size: 20px;
    box-shadow: var(--shadow-glow);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 1000;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(192, 159, 107, 0.4);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 56px;
    }
    
    .section-title {
        font-size: 40px;
    }
    
    .nav-menu {
        gap: var(--spacing-lg);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .news-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .news-card.featured {
        grid-column: span 2;
        grid-row: span 1;
    }
    
    .process-steps::before {
        display: none;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xxxxl: 96px;
    }
    
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(17, 17, 17, 0.98);
        flex-direction: column;
        padding: var(--spacing-xl);
        gap: var(--spacing-lg);
        transition: var(--transition-normal);
        backdrop-filter: blur(10px);
        display: none;
    }
    
    .nav-menu.active {
        top: 100%;
        display: grid

    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active .bar:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active .bar:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .hero-title {
        font-size: 42px;
    }
    
    .hero-subtitle {
        font-size: 20px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .jobs-grid,
    .advantages-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        justify-content: space-around;
    }
    
    .cases-filter {
        justify-content: center;
        gap: var(--spacing-xs);
    }
    
    .filter-btn {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: 14px;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .news-card.featured {
        grid-column: span 1;
    }
    
    .process-steps {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .section {
        padding: var(--spacing-xxxl) 0;
    }
    .back-to-top{
        right: 20px;
    }
    .feature-tag{
        font-size: 12px
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .btn {
        padding: 14px 24px;
        font-size: 16px;
    }
    
    .job-card,
    .advantage-card,
    .case-card {
        margin: 0 var(--spacing-xs);
    }
    
    /* 关于我们模块移动端优化 */
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .about-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }
    
    .stat-number {
        font-size: 36px;
    }
    
    .about-description p {
        font-size: 16px;
        margin-bottom: var(--spacing-md);
    }
    
    .about-img {
        height: 300px;
    }
}