/* ========================================
   云舟联科 - 专业工业风首页设计
   参考行业最佳实践 2024
======================================== */

/* ===== 重置和基础 ===== */
.hero-geometric {
    display: none;
}

/* ===== HERO区 - 全屏背景设计 ===== */
.hero {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    padding: 0;
    margin: 0;
    background: linear-gradient(135deg, #1a2a3a 0%, #2c3e50 100%);
}

/* 深色遮罩 */
.hero-overlay {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(26, 42, 58, 0.9) 0%, rgba(44, 62, 80, 0.85) 100%);
    z-index: 1;
}

.hero-content {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 80px;
    position: relative;
    z-index: 2;
}

.hero-text {
    max-width: 800px;
}

/* 清晰大标题 */
.hero-title {
    font-size: 4.5rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    letter-spacing: -1px;
}

/* 副标题 */
.hero-subtitle {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 3rem;
    line-height: 1.8;
    font-weight: 400;
}

/* 按钮组 */
.hero-buttons {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 5rem;
}

.btn {
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    border-radius: 4px;
}

.btn-primary {
    background: #0066cc;
    color: #fff;
    box-shadow: 0 4px 15px rgba(0, 102, 204, 0.3);
}

.btn-primary:hover {
    background: #0052a3;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 102, 204, 0.4);
}

.btn-secondary {
    background: transparent;
    color: #ffffff;
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #ffffff;
}

/* 统计数据 */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    padding-top: 4rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-item {
    background: transparent;
    padding: 0;
    border: none;
}

.stat-item::before,
.stat-item::after {
    display: none;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: #0066cc;
    margin-bottom: 0.5rem;
    font-family: 'Orbitron', monospace;
}

.stat-label {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 400;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.scroll-indicator {
    display: none;
}

/* ===== 产品中心 - 专业网格布局 ===== */
.products {
    padding: 6rem 0;
    background: #f8f9fa;
}

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

/* 标题区 */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1a2a3a;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: #0066cc;
    margin: 1rem auto 0;
}

.section-title::before {
    display: none;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #666;
    font-weight: 400;
    margin-top: 1rem;
}

/* 产品卡片网格 - 2x2布局 */
.product-categories {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
}

.category-card {
    background: #ffffff;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    transition: all 0.3s ease;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
}

.category-card::before,
.category-card::after {
    display: none;
}

.category-card:hover {
    border-color: #0066cc;
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 102, 204, 0.15);
}

/* 删除视觉区和内容区的分离结构 */
.category-visual {
    display: none;
}

.category-content {
    padding: 0;
    order: 0;
}

.category-number {
    font-size: 1rem;
    font-weight: 700;
    color: #0066cc;
    margin-bottom: 0;
    font-family: 'Orbitron', monospace;
}

/* 图标回到顶部 */
.category-icon {
    width: 70px;
    height: 70px;
    background: #f0f7ff;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 0 0.5rem 0;
    order: -1;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.category-card:hover .category-icon {
    background: #0066cc;
}

.category-icon::before {
    display: none;
}

.category-icon svg {
    width: 35px;
    height: 35px;
    color: #0066cc;
    transition: all 0.3s ease;
}

.category-card:hover .category-icon svg {
    color: #ffffff;
}

.category-card h3 {
    font-size: 1.5rem;
    color: #1a2a3a;
    margin-bottom: 0.8rem;
    font-weight: 600;
}

.category-card p {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

/* 链接 */
.category-link {
    color: #0066cc;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: auto;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.category-link::after {
    display: none;
}

.category-link:hover {
    gap: 0.8rem;
    color: #0052a3;
}

/* ===== 关于我们 - 两栏布局 ===== */
.about {
    padding: 6rem 0;
    background: #ffffff;
}

.about .container {
    max-width: 1400px;
    padding: 0 80px;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-content {
    padding: 0;
}

.about .section-title {
    font-size: 2.5rem;
    text-align: left;
    margin-bottom: 2rem;
    color: #1a2a3a;
}

.about .section-title::after {
    margin: 1rem 0 0 0;
}

.about-text {
    font-size: 1rem;
    line-height: 1.8;
    color: #666;
    margin-bottom: 1.5rem;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    margin-top: 2.5rem;
}

.feature-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: #f0f7ff;
    transform: translateX(10px);
}

.feature-icon {
    width: 20px;
    height: 20px;
    background: #0066cc;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 700;
    flex-shrink: 0;
    border-radius: 3px;
}

.feature-text h4 {
    font-size: 1rem;
    color: #1a2a3a;
    margin-bottom: 0.3rem;
    font-weight: 600;
}

.feature-text p {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.6;
}

/* 图片区 */
.about-image {
    position: relative;
}

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

.image-grid img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.image-grid img:first-child {
    grid-column: 1 / -1;
    height: 300px;
}

/* ===== 技术创新 - 网格布局 ===== */
.innovation {
    padding: 6rem 0;
    background: #f8f9fa;
}

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

.innovation-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
}

.innovation-grid::before {
    display: none;
}

.innovation-card {
    background: #ffffff;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
}

.innovation-card::before {
    display: none;
}

.innovation-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 102, 204, 0.12);
    border-color: #0066cc;
}

.innovation-image {
    width: 100%;
    height: 220px;
    overflow: hidden;
    position: relative;
}

.innovation-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.1) 100%);
}

.innovation-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.innovation-card:hover .innovation-image img {
    transform: scale(1.08);
}

.innovation-content {
    padding: 2rem;
}

.innovation-content h3 {
    font-size: 1.3rem;
    color: #1a2a3a;
    margin-bottom: 0.8rem;
    font-weight: 600;
}

.innovation-content p {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.7;
}

/* ===== 响应式设计 ===== */
@media (max-width: 1200px) {
    .hero-content {
        padding: 0 40px;
    }
    
    .about .container {
        padding: 0 40px;
    }
}

@media (max-width: 1024px) {
    .hero-title {
        font-size: 5rem;
    }
    
    .product-categories {
        grid-template-columns: 1fr;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .innovation-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero-content {
        padding: 0 20px;
    }
    
    .hero-title {
        font-size: 3rem;
        letter-spacing: -1px;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .about .container {
        padding: 0 20px;
    }
    
    .category-card {
        padding: 2rem;
    }
    
    .innovation-image {
        height: 200px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }
}