/* 技术页面头部样式 */
.tech-hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 100px 0 60px;
    text-align: center;
}

.tech-hero h1 {
    font-size: 2.8em;
    margin-bottom: 20px;
    animation: fadeInUp 1s ease-out;
}

.tech-hero p {
    font-size: 1.2em;
    opacity: 0.9;
    margin-bottom: 40px;
    animation: fadeInUp 1s ease-out 0.3s backwards;
}

/* 技术导航样式 */
.tech-nav {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 40px;
}

.tech-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: white;
    text-decoration: none;
    padding: 15px;
    border-radius: 8px;
    transition: background 0.3s ease;
}

.tech-nav-item:hover {
    background: rgba(255, 255, 255, 0.1);
}

.tech-nav-item i {
    font-size: 2em;
    margin-bottom: 10px;
}

/* 内容区域样式 */
.tech-content {
    padding: 60px 0;
    background: #f8f9fa;
}

.tech-section {
    background: white;
    border-radius: 12px;
    padding: 40px;
    margin-bottom: 40px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.tech-section h2 {
    color: var(--secondary-color);
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 1.8em;
}

.tech-section h2 i {
    color: var(--primary-color);
}

/* 架构概览样式 */
.architecture-overview {
    margin-top: 30px;
}

.arch-diagram {
    background: var(--light-gray);
    padding: 30px;
    border-radius: 8px;
    margin: 20px 0;
    text-align: center;
}

.arch-diagram img {
    max-width: 100%;
    height: auto;
}

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

.arch-layer {
    background: var(--light-gray);
    padding: 25px;
    border-radius: 8px;
}

.arch-layer h4 {
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-color);
}

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

.arch-layer li {
    margin-bottom: 20px;
    background: white;
    padding: 15px;
    border-radius: 6px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.tech-details {
    margin-top: 10px;
    padding-left: 15px;
    border-left: 2px solid var(--primary-color);
}

.tech-details p {
    color: var(--dark-gray);
    margin: 5px 0;
    font-size: 0.9em;
}

/* 实现细节样式 */
.implementation-details {
    margin-top: 40px;
}

.tech-implementation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
    margin-top: 20px;
}

.implementation-card {
    background: var(--light-gray);
    padding: 25px;
    border-radius: 8px;
}

.implementation-card h4 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

/* 算法部分样式 */
.algorithm-overview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.algorithm-card {
    background: var(--light-gray);
    padding: 25px;
    border-radius: 8px;
}

.algorithm-content p {
    color: var(--dark-gray);
    margin-bottom: 20px;
}

/* 数据架构样式 */
.data-architecture {
    margin-top: 30px;
}

.data-flow-diagram {
    background: var(--light-gray);
    padding: 30px;
    border-radius: 8px;
    margin: 20px 0;
    text-align: center;
}

.storage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.storage-card {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.storage-card h5 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

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

.storage-card li {
    padding: 8px 0;
    border-bottom: 1px solid var(--light-gray);
}

/* 安全架构样式 */
.security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.security-card {
    background: var(--light-gray);
    padding: 25px;
    border-radius: 8px;
}

.security-card h4 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

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

.security-card li {
    margin-bottom: 20px;
    background: white;
    padding: 15px;
    border-radius: 6px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.security-details {
    margin-top: 10px;
    padding-left: 15px;
    border-left: 2px solid var(--primary-color);
}

.security-details p {
    color: var(--dark-gray);
    margin: 5px 0;
    font-size: 0.9em;
}

/* 代码块样式 */
.code-block {
    margin: 20px 0;
    background: #f8f9fa;
    border-radius: 8px;
    overflow: hidden;
}

.code-block pre {
    margin: 0;
    padding: 15px;
}

.code-block code {
    font-family: 'Fira Code', monospace;
    font-size: 14px;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .tech-hero {
        padding: 80px 0 40px;
    }

    .tech-nav {
        flex-wrap: wrap;
        gap: 15px;
    }

    .tech-nav-item {
        width: calc(50% - 15px);
    }

    .tech-section {
        padding: 20px;
    }

    .tech-implementation-grid,
    .algorithm-overview {
        grid-template-columns: 1fr;
    }

    .implementation-card,
    .algorithm-card {
        padding: 15px;
    }

    .code-block {
        overflow-x: auto;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tech-section {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 1s ease-out forwards;
}

.tech-section:nth-child(2) {
    animation-delay: 0.2s;
}

.tech-section:nth-child(3) {
    animation-delay: 0.4s;
}

.tech-section:nth-child(4) {
    animation-delay: 0.6s;
}