/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1e40af;
    --primary-light: #3b82f6;
    --primary-dark: #1e3a8a;
    --accent-color: #f59e0b;
    --accent-light: #fbbf24;
    --text-color: #1f2937;
    --text-dark: #111827;
    --text-light: #6b7280;
    --text-lighter: #9ca3af;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --bg-gradient-alt: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* 深色主题变量 - 借鉴比亚迪风格 */
    --dark-bg: #000000;
    --dark-bg-secondary: #1a1a1a;
    --dark-bg-tertiary: #2a2a2a;
    --dark-text: #ffffff;
    --dark-text-secondary: #d1d5db;
    --dark-text-muted: #9ca3af;
    --dark-accent: #e60012;
    --dark-accent-hover: #ff1a2e;
    --dark-border: #333333;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-color);
    line-height: 1.7;
    background-color: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 导航栏 */
.navbar {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 24px;
}

.logo h1 {
    font-size: 1.75rem;
    background: var(--bg-gradient-alt);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.25rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo p {
    font-size: 0.875rem;
    color: var(--text-light);
    font-weight: 500;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 0;
}

.nav-menu a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--bg-gradient-alt);
    transition: width 0.3s ease;
}

.nav-menu a:hover::before,
.nav-menu a.active::before {
    width: 100%;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
    padding: 0.5rem;
}

.hamburger span {
    width: 28px;
    height: 3px;
    background-color: var(--text-color);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* 主要内容区域 */
main {
    min-height: calc(100vh - 200px);
}

/* 首页英雄区域 */
.hero {
    background: var(--bg-gradient);
    color: white;
    padding: 100px 0 120px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    font-weight: 800;
    letter-spacing: -1px;
    line-height: 1.2;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.subtitle {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    opacity: 0.95;
    font-weight: 500;
}

.description {
    font-size: 1.15rem;
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1.25rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--bg-gradient-alt);
    color: white;
    border: 2px solid transparent;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.15);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-3px);
}

/* 页面标题区域 */
.page-header {
    background: var(--bg-gradient);
    color: white;
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.page-header h1 {
    font-size: 2.75rem;
    margin-bottom: 0.75rem;
    font-weight: 800;
    letter-spacing: -1px;
    position: relative;
    z-index: 1;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.95;
    position: relative;
    z-index: 1;
}

/* 特性区域 */
.features {
    padding: 80px 0;
    background: linear-gradient(to bottom, var(--bg-white) 0%, var(--bg-light) 100%);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3.5rem;
    color: var(--text-dark);
    font-weight: 700;
    letter-spacing: -0.5px;
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--bg-gradient-alt);
    border-radius: 2px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.feature-card {
    background: white;
    padding: 2.5rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--bg-gradient-alt);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

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

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    display: inline-block;
    transition: transform 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
    font-weight: 600;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* 服务预览 */
.services-preview {
    padding: 80px 0;
    background: var(--bg-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    margin-bottom: 3rem;
}

.service-card {
    background: white;
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow);
    border-top: 5px solid;
    border-image: var(--bg-gradient-alt) 1;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.service-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-gradient-alt);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 0;
}

.service-card:hover::after {
    opacity: 0.03;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.service-card > * {
    position: relative;
    z-index: 1;
}

.service-card h3 {
    font-size: 1.75rem;
    margin-bottom: 1.25rem;
    background: var(--bg-gradient-alt);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.service-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.service-card ul {
    list-style: none;
    padding-left: 0;
}

.service-card li {
    padding: 0.75rem 0;
    padding-left: 1.75rem;
    position: relative;
    color: var(--text-color);
    transition: padding-left 0.3s ease;
}

.service-card:hover li {
    padding-left: 2rem;
}

.service-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.service-card:hover li::before {
    transform: scale(1.2);
}

.text-center {
    text-align: center;
    margin-top: 2rem;
}

/* 公司信息区域 */
.company-info {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-white) 100%);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.75rem;
}

.info-item {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary-color);
}

.info-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.info-item strong {
    display: block;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-item span {
    color: var(--text-color);
    font-size: 1.05rem;
    font-weight: 500;
}

/* 关于我们页面 */
.about-content {
    padding: 60px 0;
    background: var(--bg-white);
}

.about-section {
    margin-bottom: 4rem;
}

.about-section h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-dark);
    font-weight: 700;
    padding-bottom: 1rem;
    border-bottom: 3px solid;
    border-image: var(--bg-gradient-alt) 1;
    position: relative;
}

.about-section p {
    margin-bottom: 1.25rem;
    color: var(--text-color);
    line-height: 1.9;
    font-size: 1.05rem;
}

.company-details {
    background: linear-gradient(135deg, var(--bg-light) 0%, white 100%);
    padding: 2.5rem;
    border-radius: 16px;
    margin-top: 1.5rem;
    box-shadow: var(--shadow);
}

.detail-row {
    display: flex;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--border-color);
    transition: padding-left 0.3s ease;
}

.detail-row:hover {
    padding-left: 10px;
}

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

.detail-label {
    min-width: 200px;
    font-weight: 600;
    color: var(--text-dark);
    font-size: 1rem;
}

.detail-value {
    color: var(--text-color);
    flex: 1;
    font-size: 1.05rem;
}

.business-scope {
    background: linear-gradient(135deg, var(--bg-light) 0%, white 100%);
    padding: 2.5rem;
    border-radius: 16px;
    margin-top: 1.5rem;
    box-shadow: var(--shadow);
}

.business-scope ul {
    list-style: none;
    padding-left: 0;
    margin-top: 1.5rem;
}

.business-scope li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    font-size: 1.05rem;
    color: var(--text-color);
}

.business-scope li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-size: 1.3rem;
    font-weight: bold;
}

.note {
    font-size: 0.95rem;
    color: var(--text-light);
    font-style: italic;
    margin-top: 1.5rem;
    padding: 1rem;
    background: rgba(59, 130, 246, 0.05);
    border-left: 3px solid var(--primary-color);
    border-radius: 4px;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    margin-top: 2.5rem;
}

.value-item {
    text-align: center;
    padding: 2.5rem 2rem;
    background: linear-gradient(135deg, white 0%, var(--bg-light) 100%);
    border-radius: 16px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.value-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.value-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    background: var(--bg-gradient-alt);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.value-item p {
    color: var(--text-light);
    line-height: 1.7;
}

/* 服务页面 */
.services-content {
    padding: 60px 0;
    background: var(--bg-white);
}

.service-detail {
    margin-bottom: 5rem;
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.service-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 3px solid;
    border-image: var(--bg-gradient-alt) 1;
}

.service-icon {
    font-size: 4rem;
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1));
}

.service-header h2 {
    font-size: 2.25rem;
    background: var(--bg-gradient-alt);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.service-intro {
    font-size: 1.15rem;
    color: var(--text-color);
    margin-bottom: 2.5rem;
    line-height: 1.9;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
}

.service-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2.5rem;
}

.feature-box {
    background: linear-gradient(135deg, var(--bg-light) 0%, white 100%);
    padding: 2rem;
    border-radius: 12px;
    border-left: 5px solid var(--primary-color);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.feature-box:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
    border-left-color: var(--primary-light);
}

.feature-box h4 {
    font-size: 1.3rem;
    margin-bottom: 1.25rem;
    color: var(--primary-color);
    font-weight: 600;
}

.feature-box ul {
    list-style: none;
    padding-left: 0;
}

.feature-box li {
    padding: 0.6rem 0;
    padding-left: 1.75rem;
    position: relative;
    color: var(--text-color);
    transition: padding-left 0.3s ease;
}

.feature-box:hover li {
    padding-left: 2rem;
}

.feature-box li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    transition: transform 0.3s ease;
}

.feature-box:hover li::before {
    transform: translateX(3px);
}

.service-cta {
    text-align: center;
    padding: 4rem 3rem;
    background: var(--bg-gradient);
    color: white;
    border-radius: 20px;
    margin-top: 4rem;
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.service-cta::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.service-cta > * {
    position: relative;
    z-index: 1;
}

.service-cta h2 {
    font-size: 2.25rem;
    margin-bottom: 1.25rem;
    font-weight: 800;
}

.service-cta p {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
}

/* 联系页面 */
.contact-content {
    padding: 60px 0;
    background: var(--bg-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.contact-info h2,
.contact-form-section h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-dark);
    font-weight: 700;
    padding-bottom: 1rem;
    border-bottom: 3px solid;
    border-image: var(--bg-gradient-alt) 1;
}

.info-card {
    background: linear-gradient(135deg, var(--bg-light) 0%, white 100%);
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 1.25rem;
    border-left: 5px solid var(--primary-color);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.info-card:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.info-card h3 {
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
    color: var(--text-light);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-card p {
    color: var(--text-color);
    font-size: 1.1rem;
    font-weight: 500;
}

.contact-form {
    background: linear-gradient(135deg, var(--bg-light) 0%, white 100%);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: 1.75rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.form-message {
    margin-top: 1.5rem;
    padding: 1.25rem;
    border-radius: 8px;
    display: none;
    font-weight: 500;
}

.form-message.success {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    color: #065f46;
    display: block;
    border-left: 4px solid #10b981;
}

.form-message.error {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    color: #991b1b;
    display: block;
    border-left: 4px solid #ef4444;
}

.business-hours {
    background: linear-gradient(135deg, var(--bg-light) 0%, white 100%);
    padding: 3rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow);
}

.business-hours h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-dark);
    font-weight: 700;
}

.business-hours p {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    color: var(--text-color);
    font-weight: 500;
}

/* 法律页面 */
.legal-content {
    padding: 60px 0;
    max-width: 900px;
    margin: 0 auto;
    background: var(--bg-white);
}

.legal-content.dark-section {
    background: var(--dark-bg-secondary);
}

.legal-section {
    margin-bottom: 3.5rem;
}

.legal-section h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
    font-weight: 700;
    padding-bottom: 1rem;
    border-bottom: 3px solid;
    border-image: var(--bg-gradient-alt) 1;
}

.dark-section .legal-section h2 {
    color: var(--dark-text);
    border-image: linear-gradient(90deg, var(--dark-accent), transparent) 1;
}

.legal-section h3 {
    font-size: 1.4rem;
    margin-top: 2rem;
    margin-bottom: 1.25rem;
    color: var(--text-dark);
    font-weight: 600;
}

.dark-section .legal-section h3 {
    color: var(--dark-text);
}

.legal-section p {
    margin-bottom: 1.25rem;
    line-height: 1.9;
    color: var(--text-color);
    font-size: 1.05rem;
}

.dark-section .legal-section p {
    color: var(--dark-text-secondary);
}

.legal-section ul {
    margin-left: 2rem;
    margin-bottom: 1.5rem;
}

.legal-section li {
    margin-bottom: 0.75rem;
    line-height: 1.9;
    color: var(--text-color);
    font-size: 1.05rem;
}

.dark-section .legal-section li {
    color: var(--dark-text-secondary);
}

.legal-section a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease;
}

.legal-section a:hover {
    border-bottom-color: var(--primary-color);
}

.dark-section .legal-section a {
    color: var(--dark-accent);
}

.dark-section .legal-section a:hover {
    border-bottom-color: var(--dark-accent);
}

/* 页脚 */
footer {
    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
    color: white;
    padding: 4rem 0 1.5rem;
    margin-top: 5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1.5rem;
    color: white;
    font-weight: 600;
}

.footer-section p {
    color: #d1d5db;
    line-height: 1.8;
    margin-bottom: 0.75rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.75rem;
}

.footer-section a {
    color: #d1d5db;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
}

.footer-section a:hover {
    color: white;
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2.5rem;
    border-top: 1px solid #374151;
    color: #9ca3af;
    font-size: 0.95rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .language-switcher {
        margin-right: 0.5rem;
    }
    
    .lang-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.85rem;
    }
    
    .lang-text {
        display: none; /* 在移动端只显示图标 */
    }
    
    .lang-dropdown {
        right: 0;
        min-width: 100px;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-lg);
        padding: 2rem 0;
        gap: 0;
    }

    .dark-navbar .nav-menu {
        background-color: var(--dark-bg-secondary);
        border-top: 1px solid var(--dark-border);
    }

    .dark-navbar .nav-menu a {
        color: var(--dark-text);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        padding: 1.25rem 0;
    }

    .hero {
        padding: 60px 0 80px;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1.2rem;
    }

    .description {
        font-size: 1rem;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .features-grid,
    .services-grid,
    .info-grid {
        grid-template-columns: 1fr;
    }

    .service-features {
        grid-template-columns: 1fr;
    }

    .values-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.75rem;
    }

    .page-header h1 {
        font-size: 1.75rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.95rem;
    }

    .service-detail,
    .contact-form {
        padding: 1.5rem;
    }
}

/* ============================================
   深色主题样式 - 借鉴比亚迪官网风格
   ============================================ */

/* 深色主题body */
body.dark-theme {
    background-color: var(--dark-bg);
    color: var(--dark-text);
}

/* 深色导航栏 */
.navbar.dark-navbar {
    background-color: var(--dark-bg);
    border-bottom: 1px solid var(--dark-border);
    backdrop-filter: none;
}

.navbar.dark-navbar .container {
    padding: 1rem 24px;
}

.navbar.dark-navbar .logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-circle {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--dark-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.logo-circle span {
    color: white;
    font-weight: 700;
    font-size: 1rem;
}

.logo-text h1 {
    color: var(--dark-text);
    font-size: 1.5rem;
    margin: 0;
    background: none;
    -webkit-text-fill-color: var(--dark-text);
}

.navbar.dark-navbar .nav-menu a {
    color: var(--dark-text);
    font-size: 0.95rem;
}

.navbar.dark-navbar .nav-menu a:hover,
.navbar.dark-navbar .nav-menu a.active {
    color: var(--dark-text);
}

.navbar.dark-navbar .nav-menu a::before {
    background: var(--dark-accent);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-contact {
    color: var(--dark-text);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border: 1px solid var(--dark-border);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.nav-contact:hover {
    border-color: var(--dark-accent);
    color: var(--dark-accent);
}

/* 语言切换器 */
.language-switcher {
    position: relative;
    margin-right: 1rem;
}

.lang-btn {
    background: transparent;
    border: 1px solid var(--dark-border);
    color: var(--dark-text);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.lang-btn:hover {
    border-color: var(--dark-accent);
    color: var(--dark-accent);
}

.lang-icon {
    font-size: 1rem;
}

.lang-text {
    font-weight: 500;
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    background: var(--dark-bg-tertiary);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    min-width: 120px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
}

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

.lang-option {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--dark-text);
    text-decoration: none;
    transition: all 0.3s ease;
    border-bottom: 1px solid var(--dark-border);
}

.lang-option:last-child {
    border-bottom: none;
}

.lang-option:hover {
    background: var(--dark-bg-secondary);
    color: var(--dark-accent);
    padding-left: 1.25rem;
}

.navbar.dark-navbar .hamburger span {
    background-color: var(--dark-text);
}

/* 英雄区域 - 比亚迪风格 */
.hero-byd-style {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--dark-bg);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(230, 0, 18, 0.1) 0%, transparent 50%);
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center, transparent 0%, rgba(0, 0, 0, 0.7) 100%);
}

.hero-content-byd {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 120px 20px 80px;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-slogan {
    margin-bottom: 4rem;
}

.hero-title-main {
    font-size: 4.5rem;
    font-weight: 800;
    color: var(--dark-text);
    margin-bottom: 1.5rem;
    letter-spacing: 8px;
    line-height: 1.2;
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.1);
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--dark-text-secondary);
    letter-spacing: 4px;
    margin-bottom: 2rem;
    font-weight: 300;
}

.hero-brand {
    margin-top: 2rem;
}

.brand-name {
    color: var(--dark-accent);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 2px;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 3rem;
}

.btn-hero-primary,
.btn-hero-secondary {
    padding: 16px 40px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 4px;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    display: inline-block;
}

.btn-hero-primary {
    background-color: var(--dark-accent);
    color: white;
    border-color: var(--dark-accent);
}

.btn-hero-primary:hover {
    background-color: var(--dark-accent-hover);
    border-color: var(--dark-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(230, 0, 18, 0.3);
}

.btn-hero-secondary {
    background-color: transparent;
    color: var(--dark-text);
    border-color: var(--dark-text);
}

.btn-hero-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--dark-text-secondary);
    color: var(--dark-text-secondary);
}

.hero-indicators {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 3;
}

.indicator-btn {
    background: transparent;
    border: 1px solid var(--dark-text-secondary);
    color: var(--dark-text-secondary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.indicator-btn:hover {
    border-color: var(--dark-accent);
    color: var(--dark-accent);
    background: rgba(230, 0, 18, 0.1);
}

.indicator-dots {
    display: flex;
    gap: 0.5rem;
}

.dot {
    width: 8px;
    height: 30px;
    background: var(--dark-border);
    border-radius: 2px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.dot.active {
    background: var(--dark-accent);
    height: 40px;
}

/* 深色区域 */
.dark-section {
    background-color: var(--dark-bg-secondary);
    padding: 100px 0;
    position: relative;
}

.section-title-dark {
    text-align: center;
    font-size: 2.5rem;
    color: var(--dark-text);
    margin-bottom: 4rem;
    font-weight: 700;
    letter-spacing: 2px;
}

/* 服务卡片 - 深色 */
.services-grid-dark {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.service-card-dark {
    background: var(--dark-bg-tertiary);
    padding: 3rem;
    border-radius: 12px;
    border: 1px solid var(--dark-border);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.service-card-dark::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--dark-accent);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.service-card-dark:hover::before {
    transform: scaleX(1);
}

.service-card-dark:hover {
    transform: translateY(-8px);
    border-color: var(--dark-accent);
    box-shadow: 0 20px 40px rgba(230, 0, 18, 0.2);
}

.service-icon-dark {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    display: inline-block;
}

.service-card-dark h3 {
    font-size: 1.8rem;
    color: var(--dark-text);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.service-card-dark p {
    color: var(--dark-text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
    font-size: 1.05rem;
}

.service-list {
    list-style: none;
    padding: 0;
    margin-bottom: 2rem;
}

.service-list li {
    color: var(--dark-text-secondary);
    padding: 0.75rem 0;
    padding-left: 1.5rem;
    position: relative;
    font-size: 1rem;
}

.service-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--dark-accent);
    font-weight: bold;
}

.service-link {
    color: var(--dark-accent);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: gap 0.3s ease;
}

.service-link:hover {
    gap: 1rem;
}

/* 优势展示 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.advantage-item {
    text-align: center;
    padding: 2.5rem 2rem;
    background: var(--dark-bg-tertiary);
    border-radius: 12px;
    border: 1px solid var(--dark-border);
    transition: all 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-5px);
    border-color: var(--dark-accent);
}

.advantage-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--dark-accent);
    margin-bottom: 1rem;
    opacity: 0.3;
}

.advantage-item h3 {
    font-size: 1.4rem;
    color: var(--dark-text);
    margin-bottom: 1rem;
    font-weight: 600;
}

.advantage-item p {
    color: var(--dark-text-secondary);
    line-height: 1.7;
}

/* 公司简介 */
.company-intro {
    background: var(--dark-bg);
    padding: 100px 0;
}

.intro-content {
    max-width: 900px;
    margin: 0 auto;
}

.intro-text h2 {
    font-size: 2.5rem;
    color: var(--dark-text);
    margin-bottom: 2rem;
    font-weight: 700;
}

.intro-lead {
    font-size: 1.3rem;
    color: var(--dark-text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
    font-weight: 500;
}

.intro-text p {
    color: var(--dark-text-secondary);
    line-height: 1.9;
    margin-bottom: 3rem;
    font-size: 1.05rem;
}

.intro-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    margin: 3rem 0;
    padding: 3rem 0;
    border-top: 1px solid var(--dark-border);
    border-bottom: 1px solid var(--dark-border);
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--dark-accent);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--dark-text-secondary);
    font-size: 1rem;
}

.btn-intro {
    display: inline-block;
    padding: 14px 32px;
    background-color: var(--dark-accent);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid var(--dark-accent);
}

.btn-intro:hover {
    background-color: var(--dark-accent-hover);
    border-color: var(--dark-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(230, 0, 18, 0.3);
}

/* 深色页脚 - 比亚迪风格 */
.footer-byd-style {
    background: var(--dark-bg-secondary);
    padding: 60px 0 20px;
    border-top: 1px solid var(--dark-border);
}

.footer-content-dark {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section-dark h4 {
    color: var(--dark-text);
    font-size: 1rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.footer-section-dark ul {
    list-style: none;
    padding: 0;
}

.footer-section-dark ul li {
    margin-bottom: 1rem;
}

.footer-section-dark a {
    color: var(--dark-text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-section-dark a:hover {
    color: var(--dark-accent);
}

.footer-section-dark ul li:not(:has(a)) {
    color: var(--dark-text-secondary);
    font-size: 0.9rem;
}

.footer-bottom-dark {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid var(--dark-border);
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-bottom-dark p {
    color: var(--dark-text-muted);
    font-size: 0.85rem;
    margin: 0;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-links a {
    color: var(--dark-text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.3s ease;
}

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

.footer-links span {
    color: var(--dark-text-muted);
}

/* 深色主题响应式 */
@media (max-width: 768px) {
    .hero-title-main {
        font-size: 2.5rem;
        letter-spacing: 4px;
    }

    .hero-subtitle {
        font-size: 1rem;
        letter-spacing: 2px;
    }

    .services-grid-dark {
        grid-template-columns: 1fr;
    }

    .intro-stats {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-content-dark {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }

    .footer-bottom-dark {
        flex-direction: column;
        text-align: center;
    }

    .nav-right {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title-main {
        font-size: 2rem;
        letter-spacing: 2px;
    }

    .section-title-dark {
        font-size: 2rem;
    }

    .service-card-dark {
        padding: 2rem;
    }

    .footer-content-dark {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   图片样式和深色主题页面头部
   ============================================ */

/* 深色主题页面头部 */
.page-header-dark {
    position: relative;
    padding: 120px 0 80px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    text-align: center;
    color: var(--dark-text);
    overflow: hidden;
}

.page-header-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.5) 100%);
    z-index: 1;
}

.page-header-dark .container {
    position: relative;
    z-index: 2;
}

.page-header-dark h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--dark-text);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.page-header-dark p {
    font-size: 1.3rem;
    color: var(--dark-text-secondary);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

/* 英雄区域背景图片 */
.hero-background {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    transition: background-image 0.5s ease;
}

/* 图片加载优化 */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

.service-image,
.service-image-large,
.about-image,
.intro-image,
.contact-image {
    object-fit: cover;
    transition: transform 0.4s ease, opacity 0.3s ease;
}

/* 图片懒加载效果 */
img[loading="lazy"] {
    opacity: 1;
    transition: opacity 0.3s ease;
}

img[loading="lazy"].loaded {
    opacity: 1;
}

/* 确保所有图片都可见 */
img {
    opacity: 1 !important;
    display: block !important;
    visibility: visible !important;
}

/* 服务卡片图片 */
.service-image-wrapper {
    width: 100%;
    height: 250px;
    margin-bottom: 2rem;
    border-radius: 8px;
    overflow: hidden;
    position: relative;
    background: var(--dark-bg-tertiary);
    min-height: 250px;
}

.service-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
    background: var(--dark-bg-tertiary);
}

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

.service-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--dark-bg-tertiary);
    border: 2px dashed var(--dark-border);
    color: var(--dark-text-muted);
    font-size: 0.9rem;
    text-align: center;
    padding: 1rem;
}

/* 服务详情页大图 */
.service-image-large-wrapper {
    width: 100%;
    height: 400px;
    margin-bottom: 3rem;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    background: var(--dark-bg-tertiary);
    min-height: 400px;
}

.service-image-large {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background: var(--dark-bg-tertiary);
}

.service-image-placeholder-large {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--dark-bg-tertiary);
    border: 2px dashed var(--dark-border);
    color: var(--dark-text-muted);
    font-size: 1rem;
    text-align: center;
    padding: 2rem;
}

/* 关于我们页面图片 */
.about-image-wrapper {
    width: 100%;
    max-width: 800px;
    margin: 0 auto 3rem;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.4s ease;
}

.about-image-wrapper:hover .about-image {
    transform: scale(1.02);
}

.about-image-placeholder {
    width: 100%;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--dark-bg-tertiary);
    border: 2px dashed var(--dark-border);
    color: var(--dark-text-muted);
    font-size: 1rem;
    text-align: center;
    padding: 2rem;
}

/* 公司简介图片 */
.intro-image-wrapper {
    width: 100%;
    max-width: 600px;
    margin: 0 auto 3rem;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

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

.intro-image-placeholder {
    width: 100%;
    min-height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--dark-bg-tertiary);
    border: 2px dashed var(--dark-border);
    color: var(--dark-text-muted);
    font-size: 0.95rem;
    text-align: center;
    padding: 2rem;
}

/* 联系页面图片 */
.contact-image-wrapper {
    width: 100%;
    margin-bottom: 2rem;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    background: var(--dark-bg-tertiary);
    min-height: 300px;
}

.contact-image {
    width: 100%;
    height: auto;
    min-height: 300px;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
    background: var(--dark-bg-tertiary);
}

.contact-image-wrapper:hover .contact-image {
    transform: scale(1.02);
}

.contact-image-placeholder {
    width: 100%;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--dark-bg-tertiary);
    border: 2px dashed var(--dark-border);
    color: var(--dark-text-muted);
    font-size: 0.95rem;
    text-align: center;
    padding: 2rem;
}

/* 深色服务详情卡片 */
.dark-service-detail {
    background: var(--dark-bg-tertiary);
    border: 1px solid var(--dark-border);
    color: var(--dark-text);
}

.dark-service-detail .service-header h2 {
    color: var(--dark-text);
}

.dark-service-detail .service-intro {
    background: var(--dark-bg-secondary);
    border-left-color: var(--dark-accent);
    color: var(--dark-text-secondary);
}

.dark-service-detail .feature-box {
    background: var(--dark-bg-secondary);
    border-left-color: var(--dark-accent);
}

.dark-service-detail .feature-box h4 {
    color: var(--dark-accent);
}

.dark-service-detail .feature-box li {
    color: var(--dark-text-secondary);
}

.dark-service-detail .feature-box li::before {
    color: var(--dark-accent);
}

/* 深色主题关于我们内容 */
.about-content.dark-section {
    background: var(--dark-bg-secondary);
}

.about-content.dark-section h2 {
    color: var(--dark-text);
    border-image: linear-gradient(90deg, var(--dark-accent), transparent) 1;
}

.about-content.dark-section p {
    color: var(--dark-text-secondary);
}

.about-content.dark-section .company-details {
    background: var(--dark-bg-tertiary);
    border: 1px solid var(--dark-border);
}

.about-content.dark-section .detail-label {
    color: var(--dark-text);
}

.about-content.dark-section .detail-value {
    color: var(--dark-text-secondary);
}

.about-content.dark-section .business-scope {
    background: var(--dark-bg-tertiary);
    border: 1px solid var(--dark-border);
}

.about-content.dark-section .value-item {
    background: var(--dark-bg-tertiary);
    border: 1px solid var(--dark-border);
}

.about-content.dark-section .value-item h3 {
    background: linear-gradient(135deg, var(--dark-accent), var(--dark-accent-hover));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 深色主题联系页面 */
.contact-content.dark-section {
    background: var(--dark-bg-secondary);
}

.contact-content.dark-section h2 {
    color: var(--dark-text);
    border-image: linear-gradient(90deg, var(--dark-accent), transparent) 1;
}

.contact-content.dark-section .info-card {
    background: var(--dark-bg-tertiary);
    border-left-color: var(--dark-accent);
}

.contact-content.dark-section .info-card h3 {
    color: var(--dark-text-muted);
}

.contact-content.dark-section .info-card p {
    color: var(--dark-text);
}

.contact-content.dark-section .contact-form {
    background: var(--dark-bg-tertiary);
    border: 1px solid var(--dark-border);
}

.contact-content.dark-section .form-group label {
    color: var(--dark-text);
}

.contact-content.dark-section .form-group input,
.contact-content.dark-section .form-group select,
.contact-content.dark-section .form-group textarea {
    background: var(--dark-bg-secondary);
    border-color: var(--dark-border);
    color: var(--dark-text);
}

.contact-content.dark-section .form-group input:focus,
.contact-content.dark-section .form-group select:focus,
.contact-content.dark-section .form-group textarea:focus {
    border-color: var(--dark-accent);
    box-shadow: 0 0 0 4px rgba(230, 0, 18, 0.1);
}

.contact-content.dark-section .business-hours {
    background: var(--dark-bg-tertiary);
    border: 1px solid var(--dark-border);
}

.contact-content.dark-section .business-hours h2 {
    color: var(--dark-text);
}

.contact-content.dark-section .business-hours p {
    color: var(--dark-text-secondary);
}

/* 响应式图片调整 */
@media (max-width: 768px) {
    .service-image-wrapper {
        height: 200px;
    }

    .service-image-large-wrapper {
        height: 300px;
    }

    .page-header-dark h1 {
        font-size: 2rem;
    }

    .page-header-dark p {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .service-image-wrapper {
        height: 180px;
    }

    .service-image-large-wrapper {
        height: 250px;
    }
}