/* 文章与指南专用精致排版样式表 (Guides Typography & Layout) */

:root {
    --article-max-width: 800px;
    --table-header-bg: rgba(59, 130, 246, 0.1);
    --table-row-hover: rgba(59, 130, 246, 0.05);
}

@media (prefers-color-scheme: dark) {
    :root {
        --table-header-bg: rgba(59, 130, 246, 0.2);
        --table-row-hover: rgba(255, 255, 255, 0.02);
    }
}

/* 面包屑导航 */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.breadcrumb a {
    color: var(--text-muted);
    transition: color 0.2s ease;
}

.breadcrumb a:hover {
    color: var(--primary);
    opacity: 1;
}

.breadcrumb span.separator {
    opacity: 0.5;
}

/* 文章头部区域 */
.article-header {
    margin-bottom: 3rem;
    text-align: left;
}

.article-title {
    font-size: 2.75rem;
    line-height: 1.2;
    margin-bottom: 1rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text-main);
}

@media (max-width: 768px) {
    .article-title {
        font-size: 2rem;
    }
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: 1.5rem;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* 文章正文排版 */
.article-content {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-main);
}

.article-content p {
    margin-bottom: 1.5rem;
}

.article-content h2 {
    font-size: 1.75rem;
    margin-top: 3rem;
    margin-bottom: 1.25rem;
    color: var(--text-main);
    border-bottom: 2px solid var(--border-glass);
    padding-bottom: 0.5rem;
    display: flex;
    align-items: center;
}

.article-content h2::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 1.5rem;
    background: var(--primary);
    border-radius: 3px;
    margin-right: 0.75rem;
}

.article-content h3 {
    font-size: 1.35rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-main);
}

/* 列表样式 */
.article-content ul, 
.article-content ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.article-content li {
    margin-bottom: 0.5rem;
}

/* 精致的对比表格（GEO最爱） */
.comparison-table-wrapper {
    overflow-x: auto;
    margin: 2.5rem 0;
    border-radius: 16px;
    border: 1px solid var(--border-glass);
    background: var(--bg-glass);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 1rem;
}

.comparison-table th {
    background: var(--table-header-bg);
    padding: 1rem 1.25rem;
    font-weight: 600;
    color: var(--text-main);
    border-bottom: 1px solid var(--border-glass);
}

.comparison-table td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-glass);
    color: var(--text-muted);
}

.comparison-table tr:last-child td {
    border-bottom: none;
}

.comparison-table tr:hover td {
    background: var(--table-row-hover);
    color: var(--text-main);
}

.comparison-table td strong {
    color: var(--primary);
}

/* 警示与引言框 */
.note-box {
    background: var(--bg-glass);
    border-left: 4px solid var(--primary);
    border-radius: 0 12px 12px 0;
    padding: 1.25rem 1.5rem;
    margin: 2rem 0;
    font-size: 1.05rem;
    color: var(--text-muted);
}

.note-box strong {
    color: var(--text-main);
}

/* 转化引导卡片 (CTA Card) */
.inline-cta-card {
    margin: 3rem 0;
    padding: 2.5rem;
    background: linear-gradient(135deg, var(--bg-surface), var(--bg-glass));
    border: 1px solid var(--border-glass);
    border-radius: 24px;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

@media (max-width: 768px) {
    .inline-cta-card {
        flex-direction: column;
        text-align: center;
        padding: 2rem 1.5rem;
    }
}

.cta-left {
    flex: 1;
}

.cta-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.cta-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

.cta-desc {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin: 0;
}

.cta-btn {
    background: var(--primary);
    color: white;
    padding: 0.8rem 1.75rem;
    border-radius: 12px;
    font-weight: 600;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 4px 12px var(--primary-glow);
    white-space: nowrap;
}

.cta-btn:hover {
    transform: scale(1.03);
    box-shadow: 0 6px 18px rgba(59, 130, 246, 0.4);
    opacity: 1;
}

/* FAQ 问答样式 */
.faq-accordion {
    margin: 2.5rem 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 1.5rem;
}

.faq-question {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-main);
}

.faq-question::before {
    content: "Q:";
    color: var(--primary);
    font-weight: 700;
    margin-right: 0.5rem;
    display: inline;
}

.faq-answer {
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin: 0;
}

.faq-answer::before {
    content: "A:";
    color: var(--secondary, #10b981);
    font-weight: 700;
    margin-right: 0.5rem;
    display: inline;
}

/* 底部相关阅读 (Related Articles) */
.related-section {
    margin-top: 5rem;
    border-top: 1px solid var(--border-glass);
    padding-top: 3rem;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 1.5rem;
}

@media (max-width: 640px) {
    .related-grid {
        grid-template-columns: 1fr;
    }
}

.related-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 1.5rem;
    transition: transform 0.3s ease;
}

.related-card:hover {
    transform: translateY(-2px);
    border-color: var(--primary);
}

.related-card h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.related-card h4 a {
    color: var(--text-main);
}

.related-card h4 a:hover {
    color: var(--primary);
}

.related-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.5;
}