:root {
    --primary: #4caf92;
    --primary-light: #4dc6ac;
    --primary-dark: #006e58;
    --secondary: #29b6f6;
    --accent: #ff9800;
    --light: #f8f9fa;
    --dark: #343a40;
    --success: #28a745;
    --text: #333333;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

body {
    color: var(--text);
    line-height: 1.6;
    background-color: #f9f9f9;
}

.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 15px;
}

/* banner区域样式 */
.guide-hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.guide-hero h1 {
    font-size: 2.8rem;
    margin-bottom: 20px;
}

.guide-hero p {
    font-size: 1.4rem;
    max-width: 800px;
    margin: 0 auto 30px;
}

/* 使用操作内容区域样式 */
.opt-section {
    padding: 80px 0;
    background-color: #f9f9f9;
    min-height: 600px;
}

.opt-header {
    margin-bottom: 40px;
    text-align: center;
}

.opt-header h1 {
    font-size: 2.2rem;
    color: var(--primary);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.opt-header h1::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--primary);
}

.opt-header p {
    color: #666;
    max-width: 700px;
    margin: 20px auto 0;
    font-size: 1.2rem;
}

.opt-list {
    display: grid;
    gap: 25px;
}

.opt-item {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
    display: flex;
}

.opt-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

.opt-image {
    width: 250px;
    /*height: 250px;*/
    object-fit: cover;
}

.opt-content {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.opt-date {
    color: #777;
    font-size: 1.4rem;
    margin-bottom: 10px;
}

.opt-title {
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 10px;
    display: block;
    text-decoration: none;
    transition: color 0.3s;
}

.opt-title:hover {
    color: var(--primary-dark);
}

.opt-excerpt {
    color: #555;
    font-size: 1.4rem;
    opacity: 0.8;
    margin-bottom: 15px;
    line-height: 1.6;
    flex-grow: 1;
}

.opt-meta {
    justify-content: space-between;
    align-items: center;
    margin-top: 15px;
    font-size: 0.9rem;
    color: #777;
}

.read-more {
    color: var(--primary);
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    float: right;
}

.read-more i {
    margin-left: 5px;
    transition: transform 0.3s;
}

.read-more:hover i {
    transform: translateX(5px);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .opt-item {
        flex-direction: column;
    }

    .opt-image {
        width: 100%;
        height: auto;
    }
}

@media (max-width: 768px) {
    .logo-container {
        width: 100%;
        justify-content: center;
    }

    .guide-hero h1 {
        font-size: 2rem;
    }

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

    .opt-header h1 {
        font-size: 1.8rem;
    }

    .opt-header p {
        font-size: 1.1rem;
    }

    .opt-content {
        padding: 15px;
    }

    .opt-title {
        font-size: 1.4rem;
    }

    .opt-excerpt {
        font-size: 1.1rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}