/* 广西德保镓业 - 工业专业风格 */
:root {
    --industrial-blue: #2c3e50;
    --industrial-orange: #e67e22;
    --industrial-gray: #95a5a6;
    --industrial-dark: #1a252f;
}

body {
    font-family: 'Roboto', 'Microsoft YaHei', sans-serif;
    background: #ecf0f1;
    color: #2c3e50;
}

.industrial-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(44, 62, 80, 0.02) 2px,
            rgba(44, 62, 80, 0.02) 4px
        );
    pointer-events: none;
    z-index: 1;
}

/* 导航 - 工业风 */
.navbar-industrial,
.navbar {
    background: var(--industrial-blue);
    border-bottom: 4px solid var(--industrial-orange);
    box-shadow: 0 5px 20px rgba(44, 62, 80, 0.3);
}

.navbar h1, .logo h1 {
    color: white;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 3px;
}

/* Hero工业风格 */
.hero, .hero-section {
    min-height: 80vh;
    background: rgba(44,62,80,0.95);
    position: relative;
    z-index: 2;
}

.hero-title, h1 {
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 900;
    color: white;
    text-transform: uppercase;
    letter-spacing: 3px;
    text-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
}

/* 产品规格表 */
.product-specs {
    background: white;
    padding: 2.5rem;
    border-left: 5px solid var(--industrial-orange);
    margin: 2rem 0;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.tech-param {
    display: grid;
    grid-template-columns: 180px 1fr;
    padding: 1rem 0;
    border-bottom: 1px solid #ecf0f1;
    align-items: center;
}

.tech-param:last-child {
    border-bottom: none;
}

.param-label {
    font-weight: 700;
    color: var(--industrial-blue);
    text-transform: uppercase;
    font-size: 0.95rem;
}

.param-value {
    color: #555;
    font-size: 1.05rem;
}

/* 技术参数卡片 */
.tech-card {
    background: white;
    border: 2px solid var(--industrial-gray);
    border-radius: 10px;
    padding: 2rem;
    margin: 1rem 0;
    transition: all 0.3s ease;
}

.tech-card:hover {
    border-color: var(--industrial-orange);
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(230, 126, 34, 0.2);
}

.tech-card h3 {
    color: var(--industrial-blue);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--industrial-orange);
}

/* B2B CTA按钮 */
.b2b-cta, .btn-primary {
    background: var(--industrial-orange);
    color: white;
    padding: 1.2rem 3rem;
    font-size: 1.2rem;
    font-weight: 700;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.4s ease;
    text-transform: uppercase;
    letter-spacing: 2px;
    display: inline-block;
    text-decoration: none;
}

.b2b-cta:hover, .btn-primary:hover {
    background: #d35400;
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(230, 126, 34, 0.4);
}

/* 产品网格 */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding: 3rem 0;
}

.product-card {
    background: white;
    border: 2px solid #ddd;
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.product-card:hover {
    border-color: var(--industrial-orange);
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.product-image {
    height: 250px;
    overflow: hidden;
    background: #f8f9fa;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-content {
    padding: 2rem;
}

.product-badge {
    display: inline-block;
    background: var(--industrial-orange);
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

/* 应用领域 */
.application-section {
    background: var(--industrial-dark);
    color: white;
    padding: 5rem 0;
}

.application-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.application-item {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.application-item:hover {
    background: rgba(230, 126, 34, 0.2);
    transform: translateY(-10px);
}

.application-icon {
    font-size: 4rem;
    color: var(--industrial-orange);
    margin-bottom: 1rem;
}

/* 数据统计 */
.stats-section {
    background: var(--industrial-blue);
    color: white;
    padding: 4rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--industrial-orange);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* 质量认证 */
.certification-badges {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin: 3rem 0;
    flex-wrap: wrap;
}

.cert-badge {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: all 0.3s ease;
}

.cert-badge:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(230, 126, 34, 0.2);
}

.cert-icon {
    font-size: 3rem;
    color: var(--industrial-orange);
    margin-bottom: 1rem;
}

/* 联系表单 */
.contact-form {
    background: white;
    padding: 3rem;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    color: var(--industrial-blue);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 1rem;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--industrial-orange);
}

/* 响应式 */
@media (max-width: 1024px) {
    .stats-grid,
    .application-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .tech-param {
        grid-template-columns: 1fr;
    }
    
    .stats-grid,
    .application-grid,
    .product-grid {
        grid-template-columns: 1fr;
    }
}