/* SEO / GEO 落地页专用样式（产品页、FAQ页、解决方案页） */

/* ========== 面包屑 ========== */
.breadcrumb {
    max-width: 1180px;
    margin: 0 auto;
    padding: 18px 20px 0;
    font-size: 14px;
    color: #8b8b8b;
}

.breadcrumb a {
    color: #6c757d;
    text-decoration: none;
}

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

.breadcrumb span.sep {
    margin: 0 8px;
    color: #c8c8c8;
}

.breadcrumb .current {
    color: var(--text-primary);
}

/* ========== 通用区块标题 ========== */
.seo-section {
    max-width: 1180px;
    margin: 0 auto;
    padding: 56px 20px 0;
}

.seo-section:last-of-type {
    padding-bottom: 80px;
}

.seo-h2 {
    font-size: 30px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 14px;
    line-height: 1.4;
}

.seo-h3 {
    font-size: 21px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 34px 0 14px;
}

.seo-lead {
    font-size: 16px;
    line-height: 2;
    color: var(--text-secondary);
    margin-bottom: 26px;
}

.seo-text {
    font-size: 15px;
    line-height: 2;
    color: var(--text-secondary);
}

.seo-text strong {
    color: var(--text-primary);
}

.seo-list {
    margin: 16px 0;
    padding-left: 22px;
}

.seo-list li {
    font-size: 15px;
    line-height: 1.9;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.seo-list li strong {
    color: var(--text-primary);
}

/* ========== 一句话结论卡（AI 摘录友好） ========== */
.answer-box {
    background: linear-gradient(135deg, rgba(71, 102, 255, 0.08) 0%, rgba(107, 133, 255, 0.08) 100%);
    border-left: 4px solid var(--primary-color);
    border-radius: 0 12px 12px 0;
    padding: 24px 28px;
    margin-bottom: 30px;
}

.answer-box .answer-label {
    display: inline-block;
    background: var(--primary-color);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    padding: 3px 12px;
    border-radius: 4px;
    margin-bottom: 12px;
    letter-spacing: 1px;
}

.answer-box p {
    font-size: 16px;
    line-height: 1.95;
    color: var(--text-secondary);
}

.answer-box p strong {
    color: var(--primary-color);
}

/* ========== 参数表 ========== */
.seo-table-wrap {
    overflow-x: auto;
    margin: 24px 0;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.seo-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 560px;
    background: #fff;
}

.seo-table caption {
    caption-side: top;
    text-align: left;
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    padding: 18px 22px 12px;
}

.seo-table th,
.seo-table td {
    padding: 14px 22px;
    font-size: 15px;
    line-height: 1.75;
    border-bottom: 1px solid #f0f2f5;
    text-align: left;
    vertical-align: top;
}

.seo-table thead th {
    background: #f7f9ff;
    color: var(--text-primary);
    font-weight: 600;
    white-space: nowrap;
}

.seo-table tbody th {
    color: var(--text-primary);
    font-weight: 600;
    width: 210px;
    background: #fcfdff;
}

.seo-table td {
    color: var(--text-secondary);
}

.seo-table tbody tr:last-child th,
.seo-table tbody tr:last-child td {
    border-bottom: none;
}

.seo-table .hl {
    color: var(--primary-color);
    font-weight: 600;
}

/* ========== 步骤 / 场景卡 ========== */
.step-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
    margin: 26px 0;
}

.step-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 26px 22px;
    position: relative;
    transition: all 0.3s ease;
}

.step-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(71, 102, 255, 0.12);
    transform: translateY(-4px);
}

.step-num {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color) 0%, #6b85ff 100%);
    color: #fff;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
    font-size: 16px;
}

.step-card h4 {
    font-size: 17px;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-weight: 600;
}

.step-card p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-secondary);
}

/* ========== 对比表 ========== */
.compare-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    min-width: 720px;
}

.compare-table th,
.compare-table td {
    padding: 15px 18px;
    font-size: 14.5px;
    line-height: 1.7;
    border-bottom: 1px solid #f0f2f5;
    text-align: center;
}

.compare-table thead th {
    background: var(--primary-gradient);
    color: #fff;
    font-weight: 600;
}

.compare-table thead th:first-child {
    text-align: left;
}

.compare-table tbody th {
    text-align: left;
    color: var(--text-primary);
    font-weight: 600;
    background: #fcfdff;
}

.compare-table td {
    color: var(--text-secondary);
}

.compare-table td.win {
    color: var(--primary-color);
    font-weight: 600;
}

/* ========== FAQ ========== */
.faq-list {
    max-width: 900px;
    margin: 24px auto 0;
}

.faq-item {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 14px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.active {
    border-color: var(--primary-color);
    box-shadow: 0 8px 28px rgba(71, 102, 255, 0.1);
}

.faq-q {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    cursor: pointer;
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    font-family: inherit;
    line-height: 1.6;
}

.faq-q i {
    color: var(--primary-color);
    font-size: 15px;
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-q i {
    transform: rotate(180deg);
}

.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}

.faq-a-inner {
    padding: 0 24px 22px;
    font-size: 15px;
    line-height: 1.95;
    color: var(--text-secondary);
}

.faq-a-inner strong {
    color: var(--text-primary);
}

.faq-a-inner ul {
    padding-left: 20px;
    margin: 10px 0;
}

.faq-a-inner li {
    margin-bottom: 6px;
}

/* ========== CTA ========== */
.cta-band {
    background: var(--primary-gradient);
    border-radius: 20px;
    padding: 44px 40px;
    margin: 60px 0 0;
    text-align: center;
    color: #fff;
}

.cta-band h3 {
    font-size: 26px;
    font-weight: 600;
    margin-bottom: 12px;
}

.cta-band p {
    font-size: 15.5px;
    line-height: 1.9;
    opacity: 0.92;
    margin-bottom: 26px;
}

.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-btn {
    display: inline-block;
    padding: 13px 32px;
    border-radius: 6px;
    font-size: 15px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.cta-btn-primary {
    background: #fff;
    color: var(--primary-color);
    font-weight: 600;
}

.cta-btn-primary:hover {
    background: #eef1ff;
}

.cta-btn-ghost {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.7);
}

.cta-btn-ghost:hover {
    background: rgba(255, 255, 255, 0.14);
}

.cta-tel {
    display: block;
    margin-top: 20px;
    font-size: 15px;
    opacity: 0.95;
}

.cta-tel a {
    color: #fff;
    font-weight: 700;
    font-size: 22px;
    text-decoration: none;
    letter-spacing: 1px;
}

/* ========== 相关页面内链网格 ========== */
.link-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin: 26px 0;
}

.link-card {
    display: block;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 22px 20px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.link-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 8px 26px rgba(71, 102, 255, 0.12);
    transform: translateY(-4px);
}

.link-card .link-icon {
    font-size: 22px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.link-card strong {
    display: block;
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.link-card span {
    font-size: 13.5px;
    color: #8b8b8b;
    line-height: 1.7;
}

/* ========== 优势卡（落地页变体） ========== */
.seo-card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
    margin: 26px 0;
}

.seo-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 28px 24px;
    transition: all 0.3s ease;
}

.seo-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(71, 102, 255, 0.12);
    transform: translateY(-4px);
}

.seo-card i.head {
    font-size: 26px;
    color: var(--primary-color);
    margin-bottom: 12px;
    display: block;
}

.seo-card h4 {
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 10px;
    font-weight: 600;
}

.seo-card p {
    font-size: 14.5px;
    line-height: 1.85;
    color: var(--text-secondary);
}

/* ========== 图片 ========== */
.seo-figure {
    margin: 28px 0;
    text-align: center;
}

.seo-figure img {
    width: 100%;
    max-width: 860px;
    height: 420px;
    object-fit: cover;
    border-radius: 14px;
    box-shadow: 0 10px 36px rgba(0, 0, 0, 0.1);
}

.seo-figure figcaption {
    font-size: 14px;
    color: #8b8b8b;
    margin-top: 12px;
}

/* ========== 标签云式关键词入口 ========== */
.seo-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 18px 0 6px;
}

.seo-tags a,
.seo-tags span {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary-color);
    font-size: 13.5px;
    padding: 6px 14px;
    border-radius: 20px;
    text-decoration: none;
}

.seo-tags a:hover {
    background: var(--primary-color);
    color: #fff;
}

/* ========== 首页常见问题区块 ========== */
.faq-home {
    padding: 70px 20px;
    background: linear-gradient(180deg, #f8faff 0%, #ffffff 100%);
}

.faq-home .seo-container {
    max-width: 900px;
    margin: 0 auto;
}

/* ========== 站内链接（HTML 站点地图） ========== */
.site-links {
    background: #f7f8fa;
    border-top: 1px solid #e8eaed;
    padding: 44px 20px;
}

.site-links-inner {
    max-width: 1180px;
    margin: 0 auto;
}

.site-links h3 {
    font-size: 19px;
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 20px;
}

.site-links-cols {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 26px;
}

.site-links-col h4 {
    font-size: 15px;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 12px;
}

.site-links-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.site-links-col li {
    margin-bottom: 9px;
}

.site-links-col a {
    font-size: 13.5px;
    color: #6c757d;
    text-decoration: none;
    line-height: 1.7;
}

.site-links-col a:hover {
    color: var(--primary-color);
}

.site-links-col span {
    font-size: 13.5px;
    color: #6c757d;
}

@media (max-width: 992px) {
    .site-links-cols {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

/* ========== 响应式 ========== */
@media (max-width: 992px) {
    .step-grid,
    .link-grid,
    .seo-card-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .seo-h2 {
        font-size: 26px;
    }
}

@media (max-width: 768px) {
    .seo-section {
        padding: 40px 16px 0;
    }

    .seo-h2 {
        font-size: 22px;
    }

    .seo-h3 {
        font-size: 19px;
    }

    .step-grid,
    .link-grid,
    .seo-card-grid {
        grid-template-columns: 1fr;
    }

    .seo-table th,
    .seo-table td {
        padding: 11px 14px;
        font-size: 14px;
    }

    .seo-table tbody th {
        width: 130px;
    }

    .faq-q {
        font-size: 15.5px;
        padding: 16px 18px;
    }

    .faq-a-inner {
        padding: 0 18px 18px;
        font-size: 14.5px;
    }

    .cta-band {
        padding: 32px 20px;
    }

    .cta-band h3 {
        font-size: 21px;
    }

    .cta-tel a {
        font-size: 19px;
    }

    .seo-figure img {
        height: 240px;
    }
}