:root {
    --primary: #0056b3;
    --secondary: #3a7bd5;
    --accent: #00a8cc;
    --light: #f8f9fa;
    --dark: #212529;
    --success: #28a745;
}

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

.logo-img {
    width: 200px;
    height: auto;
    max-width: 100%;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
    line-height: 1.6;
}

.navbar {
    background-color: white;
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
    padding: 15px 0;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.8rem;
    color: black !important;
}

.navbar-nav .nav-link {
    color: black !important;
    font-weight: 500;
    margin: 0 8px;
    transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover {
    color: var(--primary) !important;
    transform: translateY(-2px);
}

.hero {
    height: 80vh;
    display: flex;
    align-items: center;
    color: white;
    text-align: center;
    position: relative;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 1.4rem;
    margin-bottom: 30px;
}

.btn-primary {
    background: var(--accent);
    border: none;
    padding: 12px 30px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 30px;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: #008fb3;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
    padding-bottom: 15px;
}

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

.card {
    border: none;
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

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

.card-img-top {
    height: 220px;
    object-fit: cover;
}

.card-body {
    padding: 25px;
}

.card-title {
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 15px;
}

.features {
    background-color: #f0f8ff;
    padding: 80px 0;
}

.feature-box {
    text-align: center;
    padding: 30px 20px;
    border-radius: 10px;
    background: white;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    height: 100%;
}

.feature-box:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.feature-icon {
    font-size: 3rem;
    color: var(--accent);
    margin-bottom: 20px;
}

.feature-box h3 {
    color: var(--primary);
    margin-bottom: 15px;
}

.stats {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 60px 0;
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 1.2rem;
    opacity: 0.9;
}

.products {
    padding: 80px 0;
}

.footer {
    background: var(--dark);
    color: rgba(255,255,255,0.7);
    padding: 60px 0 30px;
}

.footer h5 {
    color: white;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 10px;
}

.footer h5:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background: var(--accent);
}

.footer ul {
    list-style: none;
    padding: 0;
}

.footer ul li {
    margin-bottom: 10px;
}

.footer ul li a {
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer ul li a:hover {
    color: white;
    padding-left: 5px;
}

.social-links a {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    text-align: center;
    line-height: 40px;
    color: white;
    margin-right: 10px;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--accent);
    transform: translateY(-5px);
}

.copyright {
    text-align: center;
    padding-top: 30px;
    margin-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.product-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--accent);
    color: white;
    padding: 5px 15px;
    border-radius: 30px;
    font-size: 0.8rem;
    font-weight: 600;
}

.spec-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

.spec-table th, .spec-table td {
    border: 1px solid #dee2e6;
    padding: 12px 15px;
    text-align: left;
}

.spec-table th {
    background-color: #f8f9fa;
    font-weight: 600;
}

.spec-table tr:nth-child(even) {
    background-color: #f8f9fa;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

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

    .stat-number {
        font-size: 2.2rem;
    }
}

/* 添加一些额外的样式到现有CSS文件 */
.radial-progress {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: conic-gradient(var(--accent) 0deg, #e6e6e6 0deg);
    transition: background 1s ease;
}

.progress-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
}

.page-header {
    background: linear-gradient(rgba(0, 86, 179, 0.8), rgba(58, 123, 213, 0.8)),
                var(--header-image) no-repeat center center/cover;
    height: 300px;
    display: flex;
    align-items: center;
}

.bg-light {
    background-color: #f8f9fa !important;
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(0, 134, 179, 0.05);
}

.alert-info {
    background-color: #d1ecf1;
    border-color: #bee5eb;
    color: #0c5460;
}

/* 响应式调整 */
@media (max-width: 992px) {
    .radial-progress {
        width: 120px;
        height: 120px;
    }

    .progress-value {
        font-size: 1.5rem;
    }
}

@media (max-width: 768px) {
    .radial-progress {
        width: 100px;
        height: 100px;
    }

    .progress-value {
        font-size: 1.2rem;
    }
}

/* 图标圆圈样式 */
.icon-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.8rem;
}

/* 视频容器样式 */
.ratio {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/* 图表容器样式 */
canvas {
    max-width: 100%;
}

/* 应用卡片样式 */
.card-img-top {
    height: 200px;
    object-fit: cover;
}

/* 特色图标样式 */
.feature-icon {
    font-size: 2.5rem;
    color: var(--accent);
}

/* 产品优势样式 */
.d-flex.align-items-center {
    padding: 10px 0;
    border-bottom: 1px solid #eee;
}

.d-flex.align-items-center:last-child {
    border-bottom: none;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .icon-circle {
        width: 60px;
        height: 60px;
        font-size: 1.4rem;
    }

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

/* 质量控制时间线 */
.quality-timeline {
    position: relative;
    padding-left: 30px;
}

.quality-timeline::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--accent);
}

.timeline-item {
    position: relative;
    margin-bottom: 30px;
}

.timeline-icon {
    position: absolute;
    left: -30px;
    top: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
}

.timeline-content {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
}

/* 研发图标 */
.research-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--accent);
    color: white;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

/* 流程步骤 */
.process-step {
    padding: 20px;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    height: 100%;
    transition: all 0.3s ease;
}

.process-step:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    font-weight: bold;
}

/* 联系表单样式 */
.map-container {
    position: relative;
    height: 450px;
    overflow: hidden;
}

.column-list {
    columns: 2;
    -webkit-columns: 2;
    -moz-columns: 2;
}

@media (max-width: 768px) {
    .column-list {
        columns: 1;
        -webkit-columns: 1;
        -moz-columns: 1;
    }

    .quality-timeline {
        padding-left: 20px;
    }

    .timeline-icon {
        left: -25px;
    }
}