/* 首页样式 */
:root {
    --primary-blue: #1a237e;
    --primary-orange: #ff6b00;
    --gradient-primary: linear-gradient(135deg, #1a237e 0%, #ff6b00 100%);
    --gradient-hover: linear-gradient(135deg, #ff6b00 0%, #1a237e 100%);
}

/* 英雄区域 */
.hero {
    background: var(--gradient-primary);
    height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    position: relative;
    margin-top: 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/hero-bg.jpg') center/cover;
    opacity: 0.2;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 2rem;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
}

.hero-btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: #fff;
    color: var(--primary-blue);
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.hero-btn:hover {
    background: transparent;
    color: #fff;
    border-color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* 公司简介 */
.company-intro {
    padding: 6rem 2rem;
    background: #fff;
}

.intro-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.intro-text h2 {
    color: var(--primary-blue);
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    position: relative;
}

.intro-text h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    margin-top: 1rem;
    border-radius: 2px;
}

.intro-text p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.intro-image {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    position: relative;
}

.intro-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0.1;
    transition: opacity 0.3s ease;
}

.intro-image:hover::before {
    opacity: 0.2;
}

.intro-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* 部门展示 */
.departments {
    padding: 6rem 2rem;
    background: #f8f9fa;
}

.departments h2 {
    text-align: center;
    color: var(--primary-blue);
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
}

.departments h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    margin: 1rem auto;
    border-radius: 2px;
}

.departments-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.department-card {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.department-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.department-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

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

.department-card h3 {
    color: var(--primary-blue);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.department-card p {
    color: #666;
    line-height: 1.6;
}

/* 优势展示 */
.advantages {
    padding: 6rem 2rem;
    background: var(--gradient-primary);
    color: #fff;
    position: relative;
}

.advantages::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/pattern.png') center/cover;
    opacity: 0.1;
}

.advantages h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
}

.advantages h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: #fff;
    margin: 1rem auto;
    border-radius: 2px;
}

.advantages-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    position: relative;
    z-index: 1;
}

.advantage-card {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.advantage-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.2);
}

.advantage-card h3 {
    font-size: 1.5rem;
    margin: 1rem 0;
}

.advantage-card p {
    line-height: 1.6;
    opacity: 0.9;
}

/* 生产能力 */
.production {
    padding: 6rem 2rem;
    background: #fff;
}

.production h2 {
    text-align: center;
    color: var(--primary-blue);
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
}

.production h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    margin: 1rem auto;
    border-radius: 2px;
}

.production-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.production-item {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.production-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}

.production-item:hover img {
    transform: scale(1.05);
}

.production-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.5rem;
    background: linear-gradient(to top, rgba(26, 35, 126, 0.9), transparent);
    color: #fff;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.production-item:hover .production-overlay {
    transform: translateY(0);
}

.production-overlay h3 {
    margin-bottom: 0.5rem;
}

/* 质量承诺 */
.quality {
    padding: 6rem 2rem;
    background: #f8f9fa;
}

.quality h2 {
    text-align: center;
    color: var(--primary-blue);
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
}

.quality h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    margin: 1rem auto;
    border-radius: 2px;
}

.quality-content {
    max-width: 1200px;
    margin: 0 auto;
}

.quality-list {
    list-style: none;
    padding: 0;
}

.quality-list li {
    background: #fff;
    padding: 1.5rem 2rem;
    margin-bottom: 1rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    position: relative;
    padding-left: 3rem;
    transition: all 0.3s ease;
}

.quality-list li:hover {
    transform: translateX(10px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.quality-list li::before {
    content: "✓";
    position: absolute;
    left: 1rem;
    color: var(--primary-orange);
    font-weight: bold;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .intro-content {
        grid-template-columns: 1fr;
    }
    
    .departments-grid,
    .advantages-grid,
    .production-grid {
        grid-template-columns: 1fr;
    }
    
    .quality-list li {
        padding: 1rem 1.5rem 1rem 2.5rem;
    }
}