/* =====================================
   www.yuanchn.com - 恩源云创 主站样式
   与 tool.yuanchn.com 设计语言统一
   ===================================== */

/* Google AdSense：未填充的广告不占空白 */
ins.adsbygoogle[data-ad-status="unfilled"] {
    display: none !important;
}

/* 全局 */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: #f5f6fa;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
main {
    flex: 1;
}

/* ===== Hero 区域（与 tool.yuanchn.com 同款渐变） ===== */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 40px 0;
    text-align: center;
    border-radius: 12px;
    margin-bottom: 30px;
}
.hero-section h1 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 8px;
}
.hero-section p {
    font-size: 1.05rem;
    opacity: 0.9;
    margin-bottom: 0;
}

/* ===== 子站卡片（与 tool 工具卡片同风格） ===== */
.site-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    margin-bottom: 30px;
}

@media (max-width: 1200px) {
    .site-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .site-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
    .site-grid { grid-template-columns: 1fr; }
}
.site-grid-2x2 {
    grid-template-columns: repeat(2, 1fr);
}
.site-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 28px 20px;
    background: #fff;
    border: 1px solid #eee;
    border-radius: 12px;
    text-decoration: none;
    color: #333;
    transition: all 0.25s ease;
    min-height: 160px;
    text-align: center;
}
.site-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 28px rgba(0,0,0,0.1);
    border-color: #667eea;
    color: #333;
    text-decoration: none;
}
.site-card .site-icon {
    font-size: 40px;
    margin-bottom: 10px;
}
.site-card .site-name {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 6px;
}
.site-card .site-desc {
    font-size: 13px;
    color: #888;
    line-height: 1.4;
}
.site-card .site-link-text {
    font-size: 13px;
    color: #667eea;
    margin-top: 6px;
}

/* ===== 热门工具直达 ===== */
.hot-tools {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
}
.hot-tool-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    background: #fff;
    border: 1px solid #d0d5e8;
    border-radius: 8px;
    font-size: 14px;
    color: #333;
    text-decoration: none;
    transition: all 0.2s ease;
    font-weight: 500;
}
.hot-tool-item:hover {
    border-color: #667eea;
    background: #f0f2ff;
    box-shadow: 0 2px 12px rgba(102,126,234,0.2);
    color: #667eea;
    text-decoration: none;
    transform: translateY(-1px);
}

/* ===== 文章卡片 ===== */
.post-card {
    background: #fff;
    border: 1px solid #eee;
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 16px;
    transition: all 0.2s ease;
}
.post-card:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.06);
    border-color: #d0d0d0;
}
.post-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 6px;
}
.post-card h3 a {
    color: #333;
    text-decoration: none;
}
.post-card h3 a:hover {
    color: #667eea;
}
.post-card .post-meta {
    font-size: 12px;
    color: #aaa;
    margin-bottom: 8px;
}
.post-card .post-excerpt {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* ===== 分类标题 ===== */
.section-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 18px;
    padding-bottom: 8px;
    border-bottom: 2px solid #e8e8e8;
}

/* ===== 页面内容区 ===== */
.page-content {
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.page-content h1 {
    font-size: 26px;
    font-weight: 800;
    margin-bottom: 20px;
}
.page-content h2 {
    font-size: 20px;
    font-weight: 700;
    margin-top: 24px;
    margin-bottom: 12px;
}
.page-content p {
    font-size: 15px;
    line-height: 1.8;
    color: #444;
    margin-bottom: 14px;
}
.page-content ul, .page-content ol {
    font-size: 15px;
    line-height: 1.8;
    color: #444;
    margin-bottom: 14px;
}

/* ===== 博客详情 ===== */
.blog-content {
    font-size: 16px;
    line-height: 1.9;
    color: #333;
}
.blog-content h2 {
    font-size: 22px;
    font-weight: 700;
    margin-top: 30px;
    margin-bottom: 14px;
    padding-bottom: 6px;
    border-bottom: 1px solid #eee;
}

/* ===== 联系信息项 ===== */
.contact-info-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background: #f8f9fa;
    border-radius: 10px;
    margin-bottom: 12px;
}
.contact-info-item .ci-icon {
    font-size: 24px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

/* ===== 页脚 ===== */
.site-footer {
    background: #fff;
    border-top: 1px solid #eee;
    padding: 30px 0 0;
    font-size: 14px;
}

/* ===== 响应式 ===== */
@media (max-width: 576px) {
    .hero-section h1 { font-size: 1.5rem; }
    .site-grid { grid-template-columns: 1fr; }
    .site-grid-2x2 { grid-template-columns: 1fr; }
    .page-content { padding: 20px; }
    .hot-tool-item { font-size: 13px; padding: 8px 12px; }
}