/* ====== 文章页面样式 ====== */

/* 文章主体布局 */
.article-page {
    padding-top: 70px;
}

.article-header {
    background: linear-gradient(135deg, #f0faf8 0%, #e8f5f1 100%);
    padding: 60px 0 40px;
    text-align: center;
}

.article-header .container {
    max-width: 800px;
}

.article-breadcrumb {
    font-size: 13px;
    color: var(--text-gray);
    margin-bottom: 20px;
}

.article-breadcrumb a {
    color: var(--primary);
}

.article-breadcrumb a:hover {
    text-decoration: underline;
}

.article-header h1 {
    font-size: 30px;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.5;
    margin-bottom: 16px;
}

.article-meta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    font-size: 14px;
    color: var(--text-gray);
}

.article-meta .tag {
    color: var(--primary);
    background: var(--primary-light);
    padding: 2px 12px;
    border-radius: 12px;
    font-weight: 500;
}

.article-meta .divider {
    color: var(--border);
}

/* 文章正文 */
.article-body {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px 60px;
}

.article-subtitle {
    font-size: 17px;
    color: var(--text-gray);
    font-weight: 500;
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.article-intro {
    font-size: 16px;
    color: var(--text-body);
    line-height: 1.9;
    margin-bottom: 30px;
    padding: 20px 24px;
    background: var(--primary-lighter);
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.article-section {
    margin-bottom: 36px;
}

.article-section h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
    padding-left: 14px;
    border-left: 4px solid var(--primary);
    line-height: 1.4;
}

.article-section h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
    margin-top: 8px;
}

.article-section p {
    font-size: 15px;
    color: var(--text-body);
    line-height: 1.9;
    margin-bottom: 14px;
}

.article-section p strong {
    color: var(--primary-dark);
    font-weight: 600;
}

.article-section ol,
.article-section ul {
    margin-left: 20px;
    margin-bottom: 14px;
}

.article-section li {
    font-size: 15px;
    color: var(--text-body);
    line-height: 1.9;
    margin-bottom: 6px;
}

/* 文章内CTA */
.article-cta {
    text-align: center;
    padding: 40px 30px;
    background: linear-gradient(135deg, var(--primary) 0%, #55efc4 100%);
    border-radius: var(--radius-md);
    margin: 40px 0;
}

.article-cta p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 15px;
    margin-bottom: 20px;
}

/* 文章导航 */
.article-nav {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}

.article-nav a {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-body);
    padding: 12px 20px;
    background: var(--bg-gray);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.article-nav a:hover {
    background: var(--primary-light);
    color: var(--primary-dark);
}

.article-nav .nav-prev {
    flex-direction: row;
}

.article-nav .nav-next {
    flex-direction: row-reverse;
    margin-left: auto;
}

.article-nav .nav-label {
    font-size: 12px;
    color: var(--text-gray);
}

.article-nav .nav-title {
    font-weight: 600;
    max-width: 250px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 底部悬浮下载条 */
.float-download {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 -2px 20px rgba(0, 0, 0, 0.1);
    padding: 12px 20px;
    z-index: 998;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.float-download.visible {
    transform: translateY(0);
}

.float-download .float-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-dark);
}

.float-download .float-logo img {
    width: 32px;
    height: 32px;
    object-fit: contain;
    border-radius: 50%;
}

.float-download .float-slogan {
    font-size: 13px;
    color: var(--text-gray);
}

.float-download .btn {
    flex-shrink: 0;
}

/* 响应式 */
@media (max-width: 768px) {
    .article-header h1 {
        font-size: 22px;
    }

    .article-body {
        padding: 30px 16px 80px;
    }

    .article-section h2 {
        font-size: 19px;
    }

    .article-section h3 {
        font-size: 16px;
    }

    .article-section p {
        font-size: 14px;
    }

    .article-intro {
        font-size: 14px;
        padding: 16px;
    }

    .article-nav {
        flex-direction: column;
        gap: 12px;
    }

    .article-nav .nav-next {
        margin-left: 0;
    }

    .article-nav .nav-title {
        max-width: 180px;
    }

    .float-download {
        flex-wrap: wrap;
        gap: 8px;
        padding: 10px 16px;
    }

    .float-download .float-slogan {
        display: none;
    }

    .float-download .float-logo span {
        font-size: 14px;
    }

    .float-download .btn {
        padding: 8px 20px;
        font-size: 14px;
    }
}