:root {
    --primary: #15336e;
    --secondary: #866A2D;
    --accent: #c9a145;
    --light: #f8f9fa;
    --dark: #343a40;
    --gray: #6c757d;
    --light-gray: #e9ecef;
    --transition: all 0.3s ease;
    --shadow: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-hover: 0 8px 24px rgba(0,0,0,0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Microsoft YaHei', 'Segoe UI', sans-serif;
}

body {
    background-color: #f5f6f7;
    color: #333;
    line-height: 1.6;
    overflow-x: hidden;
}

/* 页面标题区域 */
.page-banner {
    background: linear-gradient(rgba(26, 42, 108, 0.85), rgba(26, 42, 108, 0.85)), url('https://images.unsplash.com/photo-1581094794329-c8112a89af12?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80');
    background-size: cover;
    background-position: center;
}

.banner-content {
    padding: 100px 20px;
    text-align: center;
    color: white;
}

.banner-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
}

.banner-content p {
    font-size: 1.4rem;
    max-width: 800px;
    margin: 0 auto 30px;
    opacity: 0.9;
}

.banner-buttons {
    display: flex;
    justify-content: center;
    gap: 25px;
    margin-top: 30px;
}

.layui-btn-custom {
    padding: 16px 40px;
    background: linear-gradient(to right, var(--secondary), var(--accent));
    color: #fff;
    border: none;
    border-radius: 30px;
    font-size: 1.2rem;
    font-weight: 600;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    box-shadow: 0 6px 15px rgba(134, 106, 45, 0.3);
}

.layui-btn-custom:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(134, 106, 45, 0.5);
    color: white;
    opacity: 0.95;
}

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

/* 内容区域通用样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.w {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.content-section {
    padding: 100px 0;
    background: white;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 70px;
    position: relative;
}

.section-header h2 {
    font-size: 2.8rem;
    color: var(--primary);
    position: relative;
    display: inline-block;
    padding-bottom: 15px;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--secondary);
    border-radius: 2px;
}

.section-header p {
    font-size: 1.25rem;
    color: var(--gray);
    max-width: 800px;
    margin: 25px auto 0;
}

/* 重要性部分 */
.importance-section {
    padding: 80px 0;
}

.importance-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.importance-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.importance-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.importance-header {
    background: linear-gradient(to right, var(--primary), #2a5298);
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.importance-icon {
    font-size: 2.5rem;
    color: var(--accent);
}

.importance-title {
    color: white;
    font-size: 1.8rem;
}

.importance-content {
    padding: 30px;
    flex-grow: 1;
}

.importance-content p {
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 20px;
}

.importance-list {
    list-style: none;
    margin-top: 20px;
}

.importance-list li {
    position: relative;
    padding-left: 30px;
    margin-bottom: 15px;
    color: var(--dark);
    line-height: 1.6;
}

.importance-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
    font-size: 1.5rem;
    top: -3px;
}

.stat-highlight {
    background: linear-gradient(to right, rgba(201, 161, 69, 0.1), rgba(201, 161, 69, 0.05));
    border-left: 4px solid var(--accent);
    padding: 15px 20px;
    margin: 20px 0;
    border-radius: 0 8px 8px 0;
}

.stat-highlight p {
    margin: 0;
    color: var(--dark);
    font-weight: 500;
}

/* 实施方法部分 */
.methodology-section {
    padding: 80px 0;
    background: white;
    overflow: visible; /* 确保内容不会被裁剪 */
}

.methodology-timeline {
    position: relative;
    max-width: 1200px;
    margin: 50px auto 0;
    padding: 20px 0;
}

.timeline-container {
    position: relative;
}

.timeline-container::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 4px;
    background: linear-gradient(to bottom, var(--primary), var(--accent));
    transform: translateX(-50%);
    z-index: 1; /* 确保时间线在图标下方 */
}

.timeline-item {
    display: flex;
    margin-bottom: 60px;
    position: relative;
    width: 100%;
    align-items: flex-start; /* 确保图标和内容对齐 */
}

.timeline-item:nth-child(even) {
    justify-content: flex-end;
}

.timeline-content {
    width: 45%;
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: var(--shadow);
    position: relative;
    transition: var(--transition);
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.timeline-item:nth-child(odd) .timeline-content::after {
    content: '';
    position: absolute;
    right: -10px;
    top: 30px;
    width: 0;
    height: 0;
    border-top: 10px solid transparent;
    border-left: 10px solid white;
    border-bottom: 10px solid transparent;
}

.timeline-item:nth-child(even) .timeline-content::after {
    content: '';
    position: absolute;
    left: -10px;
    top: 30px;
    width: 0;
    height: 0;
    border-top: 10px solid transparent;
    border-right: 10px solid white;
    border-bottom: 10px solid transparent;
}

/* 修复图标定位问题 */
.timeline-icon {
    position: absolute;
    top: 20px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    box-shadow: 0 4px 10px rgba(26, 42, 108, 0.3);
    z-index: 2; /* 确保图标在时间线上方 */
    left: 50%; /* 居中定位 */
    transform: translateX(-50%); /* 精确居中 */
}

/* 调整不同位置的内容与图标间距 */
.timeline-item:nth-child(odd) .timeline-content {
    margin-right: 80px; /* 给图标留出空间 */
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 80px; /* 给图标留出空间 */
}

.timeline-title {
    font-size: 1.6rem;
    color: var(--primary);
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--light-gray);
}

.timeline-desc {
    color: var(--gray);
    line-height: 1.7;
}

/* 技术适配表格 */
.tech-table-section {
    padding: 80px 0;
}

.tech-table {
    width: 100%;
    border-collapse: collapse;
    margin: 40px 0;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.tech-table th, .tech-table td {
    padding: 20px;
    text-align: left;
    border: 1px solid var(--light-gray);
}

.tech-table th {
    background: linear-gradient(to right, var(--primary), #2a5298);
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
}

.tech-table tr:nth-child(even) {
    background-color: rgba(26, 42, 108, 0.03);
}

.tech-table tr:hover {
    background-color: rgba(201, 161, 69, 0.05);
}

/* 风险控制部分 */
.risk-control-section {
    padding: 80px 0;
    background: white;
}

.risk-control-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.risk-control-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-top: 4px solid var(--accent);
}

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

.risk-control-header {
    padding: 25px;
    background: linear-gradient(to right, rgba(26, 42, 108, 0.05), rgba(26, 42, 108, 0.1));
    display: flex;
    align-items: center;
    gap: 15px;
}

.risk-control-icon {
    font-size: 2rem;
    color: var(--primary);
}

.risk-control-title {
    font-size: 1.5rem;
    color: var(--primary);
}

.risk-control-content {
    padding: 25px;
}

.risk-control-content p {
    color: var(--gray);
    line-height: 1.7;
    margin-bottom: 15px;
}

.example-box {
    background: rgba(201, 161, 69, 0.08);
    border-left: 3px solid var(--accent);
    padding: 15px;
    margin: 15px 0;
    border-radius: 0 5px 5px 0;
}

.example-box p {
    margin: 5px 0;
    color: var(--dark);
    font-style: italic;
}

/* 合规认证部分 */
.compliance-section {
    padding: 80px 0;
}

.compliance-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.compliance-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
}

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

.compliance-header {
    padding: 25px;
    background: linear-gradient(to right, var(--primary), #2a5298);
    color: white;
    text-align: center;
}

.compliance-title {
    font-size: 1.6rem;
    margin-bottom: 10px;
}

.compliance-content {
    padding: 25px;
    flex-grow: 1;
}

.compliance-list {
    list-style: none;
}

.compliance-list li {
    position: relative;
    padding-left: 30px;
    margin-bottom: 15px;
    color: var(--dark);
    line-height: 1.6;
}

.compliance-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
    font-size: 1.2rem;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .timeline-container::before {
        left: 60px;
    }

    .timeline-item {
        justify-content: flex-start !important;
    }

    .timeline-icon {
        left: 60px;
        transform: translateX(-50%);
    }

    .timeline-content {
        width: calc(100% - 100px);
    }

    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        margin-left: 100px;
        margin-right: 0;
    }

    .timeline-item:nth-child(odd) .timeline-content::after,
    .timeline-item:nth-child(even) .timeline-content::after {
        left: -10px;
        right: auto;
        border-right: 10px solid white;
        border-left: none;
    }
}

@media (max-width: 992px) {
    .banner-content h1 {
        font-size: 3rem;
    }

    .section-header h2 {
        font-size: 2.4rem;
    }

    .tech-table {
        display: block;
        overflow-x: auto;
    }
}

@media (max-width: 768px) {
    .page-banner {
        height: 40vh;
    }

    .banner-content h1 {
        font-size: 2.4rem;
    }

    .banner-content p {
        font-size: 1.2rem;
    }

    .banner-buttons {
        flex-direction: column;
        align-items: center;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .timeline-content {
        width: 100%;
        margin-left: 80px;
    }
}

@media (max-width: 576px) {
    .banner-content h1 {
        font-size: 2rem;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

    .timeline-content {
        margin-left: 70px;
    }

    .timeline-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
}

/* LayUI 定制 */
.layui-btn-custom i {
    margin-right: 8px;
}

.layui-icon {
    font-size: 32px !important;
}