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

:root {
    --primary-color: #3b82f6;
    --secondary-color: #2563eb;
    --accent-color: #60a5fa;
    --text-color: #f9fafb;
    --text-light: #d1d5db;
    --bg-light: #1f2937;
    --bg-gray: #111827;
    --bg-dark: #0a0e14;
    --white: #ffffff;
    --black: #000000;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
}

html {
    scroll-behavior: smooth;
}

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

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(17, 24, 39, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-brand h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
}

/* Logo样式 */
.logo-container {
    display: flex;
    align-items: center;
    position: relative;
    width: 50px;
    height: 40px;
}

.logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.logo-blocks {
    position: relative;
    width: 24px;
    height: 30px;
}

.logo-blocks::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 7px;
    bottom: 0;
    left: 0;
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    border-radius: 2px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

.logo-blocks::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 7px;
    bottom: 9px;
    left: 2px;
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    border-radius: 2px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

.logo-blocks {
    position: absolute;
    width: 12px;
    height: 7px;
    bottom: 18px;
    left: 4px;
    background: linear-gradient(135deg, #4ade80 0%, #22c55e 100%);
    border-radius: 2px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

.logo-star {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
}

.logo-star::before {
    content: '★';
    position: absolute;
    color: #fbbf24;
    font-size: 16px;
    line-height: 1;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
}

.logo-star::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid #fbbf24;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

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

.lang-switcher {
    margin-left: 1rem;
}

.lang-btn {
    background: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.lang-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    transition: all 0.3s ease;
}

/* Hero区域 */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-dark);
    color: var(--white);
    text-align: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

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

.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: 2;
    max-width: 800px;
    padding: 0 20px;
    animation: fadeInUp 1s ease;
}

.hero-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    position: relative;
    width: 120px;
    height: 120px;
    margin: 0 auto 2rem;
}

.hero-logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.hero-logo .logo-blocks {
    position: relative;
    width: 60px;
    height: 75px;
}

.hero-logo .logo-blocks::before {
    content: '';
    position: absolute;
    width: 50px;
    height: 18px;
    bottom: 0;
    left: 0;
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    border-radius: 3px;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.2);
}

.hero-logo .logo-blocks::after {
    content: '';
    position: absolute;
    width: 40px;
    height: 18px;
    bottom: 22px;
    left: 5px;
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    border-radius: 3px;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.2);
}

.hero-logo .logo-blocks {
    position: absolute;
    width: 30px;
    height: 18px;
    bottom: 44px;
    left: 10px;
    background: linear-gradient(135deg, #4ade80 0%, #22c55e 100%);
    border-radius: 3px;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.2);
}

.hero-logo .logo-star {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
}

.hero-logo .logo-star::before {
    content: '★';
    position: absolute;
    color: #fbbf24;
    font-size: 40px;
    line-height: 1;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.hero-logo .logo-star::after {
    content: '';
    position: absolute;
    width: 55px;
    height: 55px;
    border: 3px solid #fbbf24;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle-en {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    font-weight: 300;
    opacity: 0.8;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 300;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--white);
}

.btn-block {
    width: 100%;
    text-align: center;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    display: block;
    width: 30px;
    height: 50px;
    border: 2px solid var(--white);
    border-radius: 25px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: var(--white);
    border-radius: 50%;
    animation: scroll 2s infinite;
}

/* 通用区块样式 */
.section {
    padding: 80px 0;
}

.section-gray {
    background: var(--bg-gray);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-color);
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 2px;
}

/* 关于我们 */
.about-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: start;
}

.about-image-section {
    position: sticky;
    top: 100px;
}

@media (max-width: 768px) {
    .about-image-section {
        position: static !important;
        top: auto !important;
    }
}

.about-image {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    object-fit: contain;
    display: block;
}

.about-text h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

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

.advantage-list {
    list-style: none;
    margin-top: 2rem;
}

.advantage-list li {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.advantage-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.2rem;
}

.advantage-list strong {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.advantage-list p {
    color: var(--text-light);
    margin: 0;
}

.values {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 1rem 0;
    text-align: center;
    padding: 1rem;
    background: var(--bg-light);
    border-radius: 8px;
}

.vision {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--text-color);
    margin: 1rem 0;
    text-align: center;
    font-style: italic;
    padding: 1rem;
    border-left: 4px solid var(--primary-color);
    background: var(--bg-light);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 品牌理念 */
.brand-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: start;
}

.brand-image-section {
    position: sticky;
    top: 100px;
}

/* 移动端禁用 sticky 定位 */
@media (max-width: 768px) {
    .brand-image-section,
    .about-image-section {
        position: static !important;
        top: auto !important;
        transform: none !important;
        will-change: auto !important;
        left: auto !important;
        right: auto !important;
    }
}


.brand-image {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    object-fit: contain;
    display: block;
}

.brand-logo-large {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    width: 200px;
    height: 200px;
    margin: 0 auto;
}

.brand-logo-large .logo-blocks-large {
    position: relative;
    width: 100px;
    height: 125px;
}

.brand-logo-large .logo-blocks-large::before {
    content: '';
    position: absolute;
    width: 80px;
    height: 30px;
    bottom: 0;
    left: 0;
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    border-radius: 4px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.brand-logo-large .logo-blocks-large::after {
    content: '';
    position: absolute;
    width: 65px;
    height: 30px;
    bottom: 35px;
    left: 8px;
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    border-radius: 4px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.brand-logo-large .logo-blocks-large {
    position: absolute;
    width: 50px;
    height: 30px;
    bottom: 70px;
    left: 15px;
    background: linear-gradient(135deg, #4ade80 0%, #22c55e 100%);
    border-radius: 4px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.brand-logo-large .logo-star-large {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 80px;
    height: 80px;
}

.brand-logo-large .logo-star-large::before {
    content: '★';
    position: absolute;
    color: #fbbf24;
    font-size: 60px;
    line-height: 1;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.brand-logo-large .logo-star-large::after {
    content: '';
    position: absolute;
    width: 85px;
    height: 85px;
    border: 4px solid #fbbf24;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

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

.brand-text > p {
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.brand-feature {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 8px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.brand-feature h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.brand-feature p {
    color: var(--text-light);
    line-height: 1.8;
    margin: 0;
}

.brand-feature strong {
    color: var(--text-color);
    font-weight: 600;
}

/* 服务项目 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

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

/* 产品中心 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.product-card {
    background: var(--bg-light);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

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

.product-image {
    height: 300px;
    background: var(--bg-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-radius: 10px 10px 0 0;
}

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

.product-placeholder {
    color: var(--text-light);
    font-size: 1.2rem;
    opacity: 0.8;
}

.product-info {
    padding: 1.5rem;
}

.product-info h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.product-info p {
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.product-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.product-link:hover {
    color: var(--secondary-color);
}

/* 产品线 */
.product-line {
    margin-bottom: 4rem;
}

.product-line-title {
    font-size: 2rem;
    color: var(--text-color);
    margin-bottom: 0.5rem;
    text-align: center;
}

.product-line-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    text-align: center;
    margin-bottom: 1rem;
}

.product-line-description {
    font-size: 1.1rem;
    color: var(--text-light);
    text-align: center;
    margin-bottom: 3rem;
    line-height: 1.8;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* 合作伙伴品牌 */
.partners-section {
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 2px solid var(--bg-gray);
    background-image: url('static_1/1.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    min-height: 400px;
    border-radius: 10px;
    overflow: hidden;
}

.partners-title {
    font-size: 1.5rem;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-color);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
    max-width: 1000px;
    margin: 0 auto;
}

.partner-logo {
    background: var(--bg-light);
    color: var(--white);
    padding: 1.5rem 1rem;
    text-align: center;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 80px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.partner-logo:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    background: var(--primary-color);
}

/* 项目案例 */
.cases-intro {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.case-category-title {
    font-size: 2rem;
    color: var(--text-color);
    margin: 4rem 0 2rem;
    text-align: center;
    position: relative;
    padding-bottom: 1rem;
}

.case-category-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.commercial-cases-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    width: 100%;
    max-width: 100%;
}

.case-card {
    background: var(--bg-light);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary-color);
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.case-card-featured {
    border-left: none;
    width: 100%;
    max-width: 100%;
    border-left-color: #fbbf24;
    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
}


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

.case-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
    background: var(--bg-gray);
}

.case-card-featured .case-image {
    padding: 20px;
    height: 120vh;
    background: var(--bg-light);
    width: 100%;
    border-radius: 10px 10px 0 0;
}

.case-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 0.3s ease;
}

.case-card-featured .case-img {
    object-fit: contain;
    padding: 0;
    width: 100%;
    height: 100%;
    border-radius: 10px 10px 0 0;
}

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

.case-card-featured:hover .case-img {
    transform: scale(1.02);
}

.case-card .case-header,
.case-card .case-content {
    padding: 1.5rem 2rem;
}

.case-card .case-content {
    padding-top: 0;
}


.case-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.case-header h3 {
    font-size: 1.3rem;
    color: var(--text-color);
    margin: 0;
    flex: 1;
    min-width: 200px;
}

.case-area {
    background: var(--primary-color);
    color: var(--white);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
}

.case-card-featured .case-area {
    background: #fbbf24;
    color: var(--text-color);
}

.case-location {
    background: var(--bg-gray);
    color: var(--text-light);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    white-space: nowrap;
}

.case-content {
    color: var(--text-light);
    line-height: 1.8;
}

.case-content p {
    margin-bottom: 1rem;
}

.case-content p:last-child {
    margin-bottom: 0;
}

.case-highlight {
    background: var(--bg-light);
    padding: 1rem;
    border-radius: 5px;
    border-left: 3px solid var(--primary-color);
    margin-top: 1rem !important;
}

.case-highlight strong {
    color: var(--primary-color);
}

/* 联系我们 */
.contact-content {
    max-width: 1400px;
    margin: 0 auto;
}

.contact-cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4rem;
    max-width: 1300px;
    margin: 0 auto;
}

.contact-card-image {
    width: 100%;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    background: var(--bg-light);
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-card-image:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 30px -5px rgba(0, 0, 0, 0.15), 0 15px 15px -5px rgba(0, 0, 0, 0.06);
}

.contact-card-img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
    border-radius: 15px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    position: relative;
    width: 80px;
    height: 60px;
}

.contact-company-name {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.contact-company-name-cn {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 0.3rem;
}

.contact-company-name-en {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.contact-slogan {
    font-size: 0.85rem;
    color: var(--text-light);
    font-style: italic;
    line-height: 1.6;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--bg-gray);
}

.contact-details-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow);
}

.contact-person {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--bg-gray);
}

.contact-person h3 {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.person-name {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
}

.contact-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-icon {
    font-size: 1.5rem;
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    flex-shrink: 0;
}

.contact-details h3 {
    font-size: 1rem;
    margin-bottom: 0.3rem;
    color: var(--text-color);
}

.contact-details p {
    color: var(--text-light);
    margin: 0;
    font-size: 0.95rem;
}

.address-en {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 0.3rem;
    font-style: italic;
}

.contact-link {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-link:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

.qr-codes-section {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow);
    text-align: center;
}

.qr-slogan {
    font-size: 0.85rem;
    color: var(--text-light);
    font-style: italic;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.qr-codes {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.qr-code-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.qr-code-image {
    width: 150px;
    height: 150px;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    box-shadow: var(--shadow);
    object-fit: contain;
    background: var(--white);
    padding: 5px;
}

.qr-label {
    font-size: 0.9rem;
    color: var(--text-color);
    font-weight: 600;
    margin: 0;
}

/* 页脚 */
.footer {
    background: var(--bg-dark);
    color: var(--white);
    padding: 3rem 0 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.5rem;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes scroll {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

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

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

    .lang-switcher {
        margin-left: 0;
        margin-top: 1rem;
        text-align: center;
    }

    .lang-btn {
        width: 100%;
        max-width: 200px;
    }

    .logo-container {
        width: 30px;
        height: 30px;
    }

    .logo-blocks {
        width: 18px;
        height: 22px;
    }

    .logo-star {
        width: 15px;
        height: 15px;
    }

    .logo-star::before {
        font-size: 14px;
    }

    .logo-star::after {
        width: 16px;
        height: 16px;
    }

    .hero-logo {
        width: 80px;
        height: 80px;
        margin-bottom: 1.5rem;
    }

    .hero-logo .logo-blocks {
        width: 40px;
        height: 50px;
    }

    .hero-logo .logo-star {
        width: 35px;
        height: 35px;
    }

    .hero-logo .logo-star::before {
        font-size: 28px;
    }

    .hero-logo .logo-star::after {
        width: 38px;
        height: 38px;
    }

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

    .hero-subtitle-en {
        font-size: 1rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-description {
        font-size: 0.95rem;
    }

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

    .about-content,
    .brand-content {
        display: flex !important;
        flex-direction: column !important;
        grid-template-columns: none !important;
        position: relative;
        overflow: visible;
        gap: 2rem;
    }

    .about-image-section,
    .brand-image-section {
        position: static !important;
        top: auto !important;
        transform: none !important;
        will-change: auto !important;
        left: auto !important;
        right: auto !important;
        order: -1;
        z-index: 0;
        width: 100%;
    }

    .about-image,
    .brand-image {
        margin-bottom: 2rem;
        width: 100%;
        position: relative !important;
        z-index: 0;
    }
    
    .about-text,
    .brand-text {
        position: relative !important;
        z-index: 2;
        width: 100%;
        order: 1;
    }

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

    .brand-logo-large {
        width: 150px;
        height: 150px;
        margin-bottom: 2rem;
    }

    .contact-cards-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .case-image {
        height: 220px;
    }

    .case-card-featured .case-image {
        height: 60vh;
        min-height: 500px;
        max-height: 800px;
    }
    
    .commercial-cases-grid {
        gap: 2rem;
        width: 100%;
        max-width: 100%;
    }

    .case-card-featured {
        grid-column: 1 / -1;
        max-width: 100%;
    }

    .services-grid,
    .products-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }

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

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }

    .product-line-title {
        font-size: 1.5rem;
    }

    .product-line-subtitle {
        font-size: 1rem;
    }

    .product-line-description {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.5rem;
    }

    .hero-subtitle-en {
        font-size: 0.9rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

    .stat-number {
        font-size: 2rem;
    }

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

    .brand-logo-large {
        width: 120px;
        height: 120px;
    }
}