/* ==========================================================================
   海南维实国际贸易有限公司 - 官方网站样式表
   ========================================================================== */

/* ==========================================================================
   1. CSS Reset 和基础样式
   ========================================================================== */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #1e293b;
    background-color: #ffffff;
    overflow-x: hidden;
}

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

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

ul,
ol {
    list-style: none;
}

button,
input,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
    background: none;
}

button {
    cursor: pointer;
}

/* ==========================================================================
   2. 变量定义
   ========================================================================== */

:root {
    /* 主色调 */
    --primary-color: #1a365d;
    --primary-light: #2563eb;
    --primary-dark: #1e293b;
    
    /* 辅助色 */
    --secondary-color: #0ea5e9;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    
    /* 背景色 */
    --bg-color: #ffffff;
    --bg-light: #f8fafc;
    --bg-gray: #f1f5f9;
    --bg-dark: #0f172a;
    
    /* 文字颜色 */
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-light: #ffffff;
    
    /* 边框颜色 */
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* 过渡 */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 容器宽度 */
    --container-width: 1200px;
    --container-padding: 0 24px;
}

/* ==========================================================================
   3. 排版样式
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
}

/* ==========================================================================
   4. 布局工具类
   ========================================================================== */

.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: var(--container-padding);
}

.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    color: var(--text-light);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    margin-bottom: 16px;
}

.section-title {
    font-size: 2.25rem;
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-light), var(--accent-color));
    border-radius: var(--radius-full);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-top: 16px;
}

.section-header.light .section-title,
.section-header.light .section-subtitle {
    color: var(--text-light);
}

/* ==========================================================================
   5. 按钮样式
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    color: var(--text-light);
    box-shadow: var(--shadow-md);
}

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

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

.btn-outline:hover {
    background: var(--text-light);
    color: var(--primary-color);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
}

/* ==========================================================================
   6. 头部导航
   ========================================================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

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

.logo a {
    display: flex;
    flex-direction: column;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1.2;
}

.logo-en {
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 2px;
}

.main-nav {
    margin-left: auto;
    margin-right: 40px;
}

.nav-list {
    display: flex;
    gap: 40px;
}

.nav-list a {
    position: relative;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 8px 0;
    transition: color var(--transition-base);
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-light), var(--primary-color));
    transition: width var(--transition-base);
}

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

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

.header-actions {
    flex-shrink: 0;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--primary-color);
    transition: all var(--transition-base);
}

/* ==========================================================================
   7. 首屏 Banner
   ========================================================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 50%, var(--primary-light) 100%);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--text-light);
    max-width: 900px;
    padding: 0 24px;
}

.hero-title {
    margin-bottom: 24px;
}

.title-cn {
    display: block;
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.title-en {
    display: block;
    font-size: 1.5rem;
    font-weight: 400;
    opacity: 0.9;
    letter-spacing: 1px;
}

.hero-subtitle {
    font-size: 1.375rem;
    font-weight: 500;
    margin-bottom: 24px;
    opacity: 0.95;
}

.hero-description {
    font-size: 1.125rem;
    opacity: 0.85;
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--text-light);
    opacity: 0.7;
    font-size: 0.875rem;
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg);
    margin-top: 8px;
}

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

/* ==========================================================================
   8. 关于我们
   ========================================================================== */

.about-intro {
    background: var(--bg-color);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-content h3 {
    font-size: 1.75rem;
    color: var(--primary-color);
    margin-bottom: 24px;
}

.about-content p {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-stats {
    display: flex;
    gap: 40px;
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-light);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.about-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-wrapper {
    position: relative;
    width: 400px;
    height: 400px;
}

.placeholder-image {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--bg-gray) 0%, var(--border-light) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.placeholder-image svg {
    width: 60%;
    height: 60%;
    opacity: 0.5;
}

.experience-badge {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 140px;
    height: 140px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    box-shadow: var(--shadow-xl);
    animation: pulse 3s infinite;
}

.experience-badge .years {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
}

.experience-badge .text {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-top: 4px;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.4);
    }
    70% {
        box-shadow: 0 0 0 20px rgba(37, 99, 235, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(37, 99, 235, 0);
    }
}

/* ==========================================================================
   9. 产品展示
   ========================================================================== */

.products-showcase {
    background: var(--bg-light);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-card {
    background: var(--bg-color);
    border-radius: var(--radius-xl);
    padding: 40px 30px;
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid var(--border-light);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.product-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: 50%;
    transition: all var(--transition-base);
}

.product-card:hover .product-icon {
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
}

.product-card:hover .product-icon svg {
    transform: scale(1.1);
}

.product-icon svg {
    width: 60px;
    height: 60px;
    transition: transform var(--transition-base);
}

.product-card h3 {
    font-size: 1.375rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.product-spec {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, var(--bg-gray), var(--border-light));
    color: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    margin-bottom: 16px;
}

.product-desc {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.product-link {
    display: inline-block;
    color: var(--primary-light);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: all var(--transition-base);
}

.product-link:hover {
    color: var(--primary-color);
    transform: translateX(4px);
}

/* ==========================================================================
   10. 企业优势
   ========================================================================== */

.advantages {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    color: var(--text-light);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.advantage-item {
    text-align: center;
    padding: 30px 20px;
    transition: all var(--transition-base);
}

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

.advantage-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: all var(--transition-base);
}

.advantage-item:hover .advantage-icon {
    background: var(--accent-color);
}

.advantage-icon svg {
    width: 40px;
    height: 40px;
    color: var(--text-light);
    transition: all var(--transition-base);
}

.advantage-item:hover .advantage-icon svg {
    transform: scale(1.1);
}

.advantage-item h3 {
    font-size: 1.25rem;
    margin-bottom: 16px;
    color: var(--text-light);
}

.advantage-item p {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
}

/* ==========================================================================
   11. 业务范围
   ========================================================================== */

.business-scope {
    background: var(--bg-color);
}

.world-map {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

.map-placeholder {
    background: var(--bg-light);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.map-placeholder svg {
    width: 100%;
    height: auto;
}

.map-point {
    animation: ping 2s infinite;
}

.map-point:nth-child(2) { animation-delay: 0.2s; }
.map-point:nth-child(3) { animation-delay: 0.4s; }
.map-point:nth-child(4) { animation-delay: 0.6s; }
.map-point:nth-child(5) { animation-delay: 0.8s; }
.map-point:nth-child(6) { animation-delay: 1s; }

@keyframes ping {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    75%, 100% {
        transform: scale(2);
        opacity: 0;
    }
}

.business-features {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.feature-item {
    padding: 24px;
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary-light);
    transition: all var(--transition-base);
}

.feature-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.feature-item h4 {
    font-size: 1.125rem;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.feature-item p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin: 0;
}

/* ==========================================================================
   12. 资质认证
   ========================================================================== */

.qualifications {
    background: var(--bg-light);
}

.qualifications-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.qualification-card {
    background: var(--bg-color);
    border-radius: var(--radius-lg);
    padding: 30px;
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid var(--border-light);
}

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

.qual-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: 50%;
}

.qual-icon svg {
    width: 40px;
    height: 40px;
}

.qualification-card h4 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.qualification-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: 0;
}

.credit-code {
    text-align: center;
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.query-link {
    text-align: center;
    font-size: 0.9375rem;
    color: var(--text-muted);
}

.query-link a {
    color: var(--primary-light);
    text-decoration: underline;
}

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

/* ==========================================================================
   13. 合作伙伴
========================================================================== */

.partners {
    background: var(--bg-color);
}

.partners-slider {
    display: flex;
    gap: 40px;
    justify-content: center;
    flex-wrap: wrap;
}

.partner-logo {
    width: 180px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-placeholder {
    width: 100%;
    height: 100%;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.logo-placeholder:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
}

.logo-placeholder span {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ==========================================================================
   14. 联系我们
   ========================================================================== */

.contact-section {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    color: var(--text-light);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-info h2 {
    font-size: 2rem;
    color: var(--text-light);
    margin-bottom: 16px;
}

.contact-info > p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

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

.contact-icon {
    width: 50px;
    height: 50px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
}

.contact-text h4 {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 4px;
}

.contact-text p {
    font-size: 1rem;
    color: var(--text-light);
    margin: 0;
}

.contact-form-wrapper {
    background: var(--bg-color);
    border-radius: var(--radius-xl);
    padding: 40px;
    color: var(--text-primary);
}

.contact-form h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
    text-align: center;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all var(--transition-base);
    background: var(--bg-light);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background: var(--bg-color);
}

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

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23475569' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

/* ==========================================================================
   15. 页脚
   ========================================================================== */

.footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 60px 0 0;
}

.footer-content {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-main {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 80px;
    padding-bottom: 40px;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    margin-bottom: 20px;
}

.footer-logo .logo-text {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-light);
}

.footer-logo .logo-en {
    font-size: 0.875rem;
    letter-spacing: 2px;
    color: rgba(255, 255, 255, 0.6);
}

.footer-desc {
    font-size: 0.9375rem;
    line-height: 1.8;
    margin: 0;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-col h4 {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 20px;
    position: relative;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--primary-light);
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col a {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    transition: all var(--transition-base);
}

.footer-col a:hover {
    color: var(--text-light);
    transform: translateX(4px);
}

.footer-bottom {
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ==========================================================================
   16. 响应式设计
   ========================================================================== */

@media (max-width: 1024px) {
    .section {
        padding: 60px 0;
    }
    
    .about-grid,
    .world-map,
    .contact-wrapper,
    .footer-main {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .qualifications-grid {
        grid-template-columns: 1fr;
    }
    
    .title-cn {
        font-size: 2.5rem;
    }
    
    .title-en {
        font-size: 1.25rem;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .main-nav,
    .header-actions {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero-content {
        padding: 0 16px;
    }
    
    .title-cn {
        font-size: 2rem;
    }
    
    .title-en {
        font-size: 1rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .nav-list {
        display: none;
    }
    
    .contact-form-wrapper {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .section {
        padding: 40px 0;
    }
    
    .container {
        padding: 0 16px;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .hero {
        min-height: auto;
        padding: 120px 0 80px;
    }
    
    .title-cn {
        font-size: 1.75rem;
    }
    
    .experience-badge {
        width: 100px;
        height: 100px;
    }
    
    .experience-badge .years {
        font-size: 1.5rem;
    }
    
    .image-wrapper {
        width: 300px;
        height: 300px;
    }
    
    .footer {
        padding: 40px 0 0;
    }
}

/* ==========================================================================
   17. 动画效果
   ========================================================================== */

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

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.fade-in {
    animation: fadeIn 0.8s ease forwards;
}

/* 滚动显示动画 */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   18. 打印样式
   ========================================================================== */

@media print {
    .header,
    .hero,
    .scroll-indicator,
    .footer,
    .btn {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        color: #000;
    }
    
    .section {
        padding: 20px 0;
    }
}

/* ==========================================================================
   19. 辅助工具类
   ========================================================================== */

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

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mb-0 {
    margin-bottom: 0;
}

.mt-20 {
    margin-top: 20px;
}

.mt-40 {
    margin-top: 40px;
}

/* 隐藏元素 */
.hidden {
    display: none !important;
}

/* 可访问性 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 焦点样式 */
:focus-visible {
    outline: 2px solid var(--primary-light);
    outline-offset: 2px;
}

/* 选择颜色 */
::selection {
    background: var(--primary-light);
    color: var(--text-light);
}

/* ==========================================================================
   20. 页面通用样式
   ========================================================================== */

/* 页面标题区域 */
.page-hero {
    position: relative;
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 50%, var(--primary-light) 100%);
    padding-top: 80px;
    overflow: hidden;
}

.page-hero-bg {
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.page-hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--text-light);
    padding: 60px 24px;
}

.page-hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 16px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.page-hero-content p {
    font-size: 1.25rem;
    opacity: 0.9;
}

.breadcrumb {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
}

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

/* ==========================================================================
   21. 关于我们页面样式
   ========================================================================== */

/* 企业简介区块 */
.about-section {
    background: var(--bg-color);
}

.about-intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-intro-content .section-tag {
    margin-bottom: 16px;
}

.about-intro-content h2 {
    font-size: 2rem;
    margin-bottom: 8px;
}

.company-en {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.about-divider {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-light), var(--accent-color));
    margin-bottom: 24px;
}

.about-intro-content p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-features {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 32px;
}

.about-feature-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--bg-light);
    border-radius: var(--radius-full);
}

.about-feature-item .feature-icon {
    width: 20px;
    height: 20px;
    color: var(--success-color);
}

.about-feature-item span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.about-intro-image {
    display: flex;
    justify-content: center;
}

.image-card {
    width: 100%;
    max-width: 450px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.image-placeholder {
    aspect-ratio: 4/3;
    background: var(--bg-gray);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 使命愿景区块 */
.mission-section {
    background: var(--bg-light);
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.mission-card {
    background: var(--bg-color);
    border-radius: var(--radius-xl);
    padding: 40px 30px;
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid var(--border-light);
}

.mission-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.mission-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: 50%;
}

.mission-icon svg {
    width: 40px;
    height: 40px;
}

.mission-card h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
    color: var(--primary-color);
}

.mission-card h4 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.mission-card p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 核心优势详情 */
.advantages-detail {
    background: var(--bg-color);
}

.advantages-detail-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.advantage-detail-card {
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition-base);
    border-left: 4px solid var(--primary-light);
}

.advantage-detail-card:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-lg);
}

.advantage-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-light);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: 16px;
}

.advantage-detail-card h3 {
    font-size: 1.375rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.advantage-detail-card > p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.advantage-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.advantage-list li {
    padding: 6px 14px;
    background: var(--bg-color);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

/* 资质认证详情 */
.qualifications-detail {
    background: var(--bg-light);
}

.qualifications-detail-content {
    max-width: 1000px;
    margin: 0 auto;
}

.qual-intro {
    text-align: center;
    font-size: 1.0625rem;
    color: var(--text-secondary);
    margin-bottom: 48px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.qualifications-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.qual-card {
    background: var(--bg-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    text-align: center;
    transition: all var(--transition-base);
}

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

.qual-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 500;
    margin-bottom: 16px;
}

.qual-status.approved {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.qual-status svg {
    width: 16px;
    height: 16px;
}

.qual-card h4 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.qual-date,
.qual-code {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.qual-query {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.qual-query p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

/* 社会责任区块 */
.csr-section {
    background: var(--bg-color);
}

.csr-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.csr-item {
    text-align: center;
    padding: 40px 30px;
    background: var(--bg-light);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

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

.csr-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 50%;
}

.csr-icon svg {
    width: 40px;
    height: 40px;
    color: var(--text-light);
}

.csr-item h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.csr-item p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 时间线 */
.timeline-section {
    background: var(--bg-light);
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary-light), var(--primary-color));
}

.timeline-item {
    position: relative;
    padding-bottom: 48px;
}

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

.timeline-dot {
    position: absolute;
    left: -40px;
    top: 0;
    width: 18px;
    height: 18px;
    background: var(--bg-color);
    border: 3px solid var(--primary-light);
    border-radius: 50%;
    z-index: 1;
}

.timeline-content {
    background: var(--bg-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.timeline-content:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-lg);
}

.timeline-year {
    display: inline-block;
    padding: 4px 12px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    color: var(--text-light);
    font-size: 0.8125rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    margin-bottom: 12px;
}

.timeline-content h4 {
    font-size: 1.125rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.timeline-content p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

/* ==========================================================================
   22. 产品页面样式
   ========================================================================== */

/* 产品导航 */
.product-nav-section {
    background: var(--bg-light);
    padding: 40px 0;
}

.product-nav {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.product-nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 28px;
    background: var(--bg-color);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.product-nav-item:hover,
.product-nav-item.active {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
}

.product-nav-item.active {
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
}

.product-nav-item.active .nav-text {
    color: var(--text-light);
}

.product-nav-item.active .nav-icon svg {
    stroke: var(--text-light);
}

.nav-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: 50%;
}

.product-nav-item.active .nav-icon {
    background: rgba(255, 255, 255, 0.2);
}

.nav-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--primary-color);
    stroke-width: 2;
    fill: none;
}

.nav-text {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
}

/* 产品详情区块 */
.product-detail-section {
    background: var(--bg-color);
}

.product-detail-section.alt-bg {
    background: var(--bg-light);
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: start;
}

.product-detail-grid.reverse {
    direction: rtl;
}

.product-detail-grid.reverse > * {
    direction: ltr;
}

.product-gallery {
    position: sticky;
    top: 100px;
}

.main-image {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    margin-bottom: 16px;
    box-shadow: var(--shadow-lg);
}

.main-image .image-placeholder {
    aspect-ratio: 4/3;
    background: var(--bg-light);
}

.product-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 8px 16px;
    background: linear-gradient(135deg, var(--accent-color), #d97706);
    color: var(--text-light);
    font-size: 0.8125rem;
    font-weight: 500;
    border-radius: var(--radius-full);
}

.thumbnail-row {
    display: flex;
    gap: 12px;
}

.thumbnail {
    width: 80px;
    height: 60px;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all var(--transition-base);
}

.thumbnail:hover,
.thumbnail.active {
    border-color: var(--primary-light);
}

.thumbnail svg {
    width: 100%;
    height: 100%;
}

.product-info {
    padding: 20px 0;
}

.product-header {
    margin-bottom: 32px;
}

.product-category {
    display: inline-block;
    padding: 6px 14px;
    background: var(--bg-light);
    color: var(--primary-light);
    font-size: 0.8125rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    margin-bottom: 12px;
}

.product-header h2 {
    font-size: 2rem;
    margin-bottom: 8px;
}

.product-code {
    font-size: 1.125rem;
    color: var(--text-muted);
}

.product-specs {
    margin-bottom: 28px;
}

.product-specs h4,
.product-desc h4,
.product-features h4 {
    font-size: 1rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.specs-table {
    width: 100%;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    overflow: hidden;
}

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

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

.specs-table td {
    padding: 14px 18px;
    font-size: 0.9375rem;
}

.specs-table td:first-child {
    color: var(--text-muted);
    width: 40%;
}

.specs-table td:last-child {
    color: var(--text-primary);
    font-weight: 500;
}

.product-desc {
    margin-bottom: 28px;
}

.product-desc p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
}

.product-features {
    margin-bottom: 32px;
}

.product-features ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.product-features li {
    position: relative;
    padding-left: 24px;
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.product-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 50%;
}

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

/* 质量保证区块 */
.quality-section {
    background: var(--bg-light);
}

.quality-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.quality-card {
    background: var(--bg-color);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: all var(--transition-base);
}

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

.quality-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: 50%;
}

.quality-icon svg {
    width: 36px;
    height: 36px;
}

.quality-card h3 {
    font-size: 1.125rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.quality-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 合作伙伴展示 */
.partners-products {
    background: var(--bg-color);
}

.partners-showcase {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.partner-item {
    text-align: center;
    padding: 24px;
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    width: 180px;
    transition: all var(--transition-base);
}

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

.partner-flag {
    font-size: 3rem;
    margin-bottom: 12px;
}

.partner-item h4 {
    font-size: 1rem;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.partner-item p {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* ==========================================================================
   23. 业务页面样式
   ========================================================================== */

/* 主营业务区块 */
.main-business {
    background: var(--bg-color);
}

.business-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.business-card {
    background: var(--bg-light);
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid var(--border-light);
}

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

.card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-color), var(--bg-gray));
    border-radius: 50%;
}

.card-icon svg {
    width: 44px;
    height: 44px;
}

.business-card h3 {
    font-size: 1.25rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.business-card > p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.card-features {
    display: flex;
    flex-direction: column;
    gap: 10px;
    text-align: left;
}

.card-features li {
    position: relative;
    padding-left: 20px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.card-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    background: var(--primary-light);
    border-radius: 50%;
}

/* 全球业务区块 */
.global-business {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    color: var(--text-light);
    padding: 100px 0;
}

.global-business .section-header.light .section-title {
    color: var(--text-light);
}

.global-business .section-header.light .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

.global-map {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    align-items: center;
}

.map-visual {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

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

.region-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.region-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateX(8px);
}

.region-icon {
    font-size: 2rem;
}

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

.region-info p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

/* 流程区块 */
.process-section {
    background: var(--bg-light);
}

.process-flow {
    display: flex;
    justify-content: space-between;
    position: relative;
    padding: 40px 0;
}

.process-flow::before {
    content: '';
    position: absolute;
    top: 75px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-light), var(--primary-color));
    z-index: 0;
}

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

.step-number {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-color);
    border: 3px solid var(--primary-light);
    border-radius: 50%;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-light);
    transition: all var(--transition-base);
}

.process-step:hover .step-number {
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    color: var(--text-light);
}

.step-content h3 {
    font-size: 1.125rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.step-content p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    max-width: 180px;
    margin: 0 auto;
}

/* 合作模式区块 */
.cooperation-section {
    background: var(--bg-color);
}

.cooperation-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.cooperation-card {
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    transition: all var(--transition-base);
    border: 1px solid var(--border-light);
}

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

.cooperation-card h3 {
    font-size: 1.125rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.cooperation-card > p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.coop-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.coop-features span {
    padding: 4px 12px;
    background: var(--bg-color);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    color: var(--primary-light);
}

/* 客户群体区块 */
.customers-section {
    background: var(--bg-light);
}

.customers-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.customer-category {
    text-align: center;
    padding: 32px 24px;
    background: var(--bg-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

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

.category-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: 50%;
}

.category-icon svg {
    width: 44px;
    height: 44px;
    stroke: var(--primary-light);
    stroke-width: 1.5;
    fill: none;
}

.customer-category h4 {
    font-size: 1rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.customer-category p {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* ==========================================================================
   24. 联系页面样式
   ========================================================================== */

/* 联系信息区块 */
.contact-info-section {
    background: var(--bg-color);
    padding: 60px 0;
}

.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: -120px;
    position: relative;
    z-index: 10;
}

.contact-card {
    background: var(--bg-color);
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    text-align: center;
    box-shadow: var(--shadow-xl);
    transition: all var(--transition-base);
}

.contact-card:hover {
    transform: translateY(-8px);
}

.contact-icon-wrapper {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 50%;
}

.contact-icon-wrapper svg {
    color: var(--text-light);
}

.contact-card h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.contact-card > p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.contact-card a,
.contact-card .address {
    font-size: 1rem;
    color: var(--primary-light);
    font-weight: 500;
}

/* 联系表单区块 */
.contact-form-section {
    background: var(--bg-light);
    padding: 80px 0;
}

.contact-section-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: start;
}

.contact-intro .section-tag {
    margin-bottom: 16px;
}

.contact-intro h2 {
    font-size: 2rem;
    margin-bottom: 16px;
}

.contact-intro > p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 32px;
}

.contact-advantages {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-advantages .advantage-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.contact-advantages .advantage-item svg {
    color: var(--success-color);
}

.contact-advantages .advantage-item span {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.contact-form-card {
    background: var(--bg-color);
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

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

.contact-form-detailed .form-group.full-width {
    grid-column: 1 / -1;
}

.contact-form-detailed label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.contact-form-detailed .required {
    color: var(--danger-color);
}

.contact-form-detailed input,
.contact-form-detailed select,
.contact-form-detailed textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    transition: all var(--transition-base);
    background: var(--bg-light);
}

.contact-form-detailed input:focus,
.contact-form-detailed select:focus,
.contact-form-detailed textarea:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background: var(--bg-color);
}

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

.contact-form-detailed select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23475569' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

.checkbox-group {
    padding: 8px 0;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-light);
}

.form-actions {
    margin-top: 24px;
}

/* 位置区块 */
.location-section {
    background: var(--bg-color);
}

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

.location-info h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.location-info > p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.location-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 32px;
}

.location-feature {
    text-align: center;
    padding: 20px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
}

.location-feature h4 {
    font-size: 0.9375rem;
    margin-bottom: 8px;
    color: var(--primary-color);
}

.location-feature p {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin: 0;
}

.location-map .map-placeholder {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

/* FAQ区块 */
.faq-section {
    background: var(--bg-light);
}

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

.faq-item {
    background: var(--bg-color);
    border-radius: var(--radius-lg);
    margin-bottom: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 28px;
    cursor: pointer;
    transition: all var(--transition-base);
}

.faq-question:hover {
    background: var(--bg-light);
}

.faq-question h4 {
    font-size: 1rem;
    color: var(--text-primary);
}

.faq-toggle {
    width: 24px;
    height: 24px;
    position: relative;
    flex-shrink: 0;
    margin-left: 16px;
}

.faq-toggle::before,
.faq-toggle::after {
    content: '';
    position: absolute;
    background: var(--text-muted);
    transition: all var(--transition-base);
}

.faq-toggle::before {
    width: 14px;
    height: 2px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.faq-toggle::after {
    width: 2px;
    height: 14px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.faq-item.active .faq-toggle::after {
    transform: translate(-50%, -50%) rotate(90deg);
    opacity: 0;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 28px 24px;
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==========================================================================
   25. CTA 区块样式
   ========================================================================== */

.cta-section {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    color: var(--text-light);
    text-align: center;
    padding: 100px 0;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2.25rem;
    color: var(--text-light);
    margin-bottom: 16px;
}

.cta-content > p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 40px;
    line-height: 1.7;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.cta-section .btn-outline {
    border-color: var(--text-light);
    color: var(--text-light);
}

.cta-section .btn-outline:hover {
    background: var(--text-light);
    color: var(--primary-color);
}

/* ==========================================================================
   26. 响应式补充样式
   ========================================================================== */

@media (max-width: 1024px) {
    .about-intro-grid,
    .product-detail-grid,
    .contact-section-grid,
    .location-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .product-detail-grid.reverse {
        direction: ltr;
    }
    
    .product-gallery {
        position: static;
    }
    
    .mission-grid,
    .business-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .qualifications-cards {
        grid-template-columns: 1fr;
    }
    
    .csr-grid {
        grid-template-columns: 1fr;
    }
    
    .global-map {
        grid-template-columns: 1fr;
    }
    
    .process-flow {
        flex-wrap: wrap;
        gap: 40px;
    }
    
    .process-flow::before {
        display: none;
    }
    
    .process-step {
        flex: 0 0 calc(33.33% - 20px);
    }
    
    .cooperation-grid,
    .customers-grid,
    .quality-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-info-grid {
        grid-template-columns: 1fr;
        margin-top: 0;
    }
    
    .location-features {
        grid-template-columns: 1fr;
    }
    
    .timeline {
        padding-left: 30px;
    }
    
    .timeline-dot {
        left: -30px;
    }
}

@media (max-width: 768px) {
    .page-hero-content h1 {
        font-size: 2.25rem;
    }
    
    .mission-grid,
    .business-cards,
    .advantages-detail-grid {
        grid-template-columns: 1fr;
    }
    
    .about-features {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .product-nav {
        flex-direction: column;
        align-items: stretch;
    }
    
    .product-nav-item {
        justify-content: center;
    }
    
    .contact-form-detailed .form-row {
        grid-template-columns: 1fr;
    }
    
    .process-step {
        flex: 0 0 100%;
    }
    
    .cooperation-grid,
    .customers-grid,
    .quality-grid {
        grid-template-columns: 1fr;
    }
    
    .partners-showcase {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-content h2 {
        font-size: 1.75rem;
    }
}

@media (max-width: 480px) {
    .page-hero {
        min-height: 40vh;
        padding-top: 100px;
    }
    
    .page-hero-content h1 {
        font-size: 1.75rem;
    }
    
    .breadcrumb {
        bottom: 20px;
    }
    
    .business-card,
    .mission-card {
        padding: 30px 24px;
    }
    
    .contact-card {
        padding: 30px 24px;
    }
    
    .contact-form-card {
        padding: 24px;
    }
    
    .process-flow {
        gap: 30px;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}