/* ============================================================
   母婴亲子门户 前台样式
   依据原始主题 母婴亲子门户首页.html 原样保留设计令牌与组件，
   并扩展面包屑/文章详情/列表分页/表单/FAQ/GEO 答案等页面样式。
   ============================================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    /* 背景：全站白，辅以极浅暖粉做区块呼吸 */
    --bg: #FFFFFF;
    --bg-tint: #FBF7F5;
    /* 主色：干枯玫瑰，柔和且有质感 */
    --primary: #C07A78;
    --primary-hover: #AB6664;
    --primary-soft: #F4E8E6;
    --primary-line: #E6CBC9;
    /* 暖调文字 */
    --ink: #332D2C;
    --ink-2: #706664;
    --ink-3: #A99E9B;
    /* 结构 */
    --line: #EDE5E2;
    --line-soft: #F4EFED;
    --shadow: 0 2px 14px rgba(90, 62, 58, 0.05);
    --shadow-hover: 0 10px 30px rgba(90, 62, 58, 0.11);
    --radius: 14px;
    --font-serif: "Noto Serif SC", "Songti SC", "STSong", serif;
    --font-sans: "Noto Sans SC", system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
}

body {
    background: var(--bg);
    color: var(--ink);
    font-family: var(--font-sans);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
a { text-decoration: none; }
ul { list-style: none; }
img { display: block; }

/* ============ 顶部导航 ============ */
.site-header {
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    position: sticky; top: 0; z-index: 99;
}
.header-inner {
    display: flex; justify-content: space-between; align-items: center;
    height: 74px;
}
.brand {
    font-family: var(--font-serif);
    font-size: 23px; font-weight: 700; color: var(--primary);
    letter-spacing: 1px;
    display: flex; align-items: center; gap: 10px;
}
.brand-mark {
    width: 30px; height: 30px; border-radius: 9px;
    background: var(--primary-soft);
    display: flex; align-items: center; justify-content: center;
    color: var(--primary);
}
.main-nav ul { display: flex; gap: 4px; }
.main-nav a {
    display: block; padding: 8px 15px;
    color: var(--ink); font-size: 15px;
    position: relative; transition: color .2s;
}
.main-nav a::after {
    content: ""; position: absolute; left: 50%; bottom: 0;
    width: 0; height: 2px; background: var(--primary);
    transform: translateX(-50%); transition: width .25s;
}
.main-nav a:hover { color: var(--primary); }
.main-nav a.active { color: var(--primary); font-weight: 500; }
.main-nav a.active::after, .main-nav a:hover::after { width: 20px; }
.mobile-menu-btn {
    display: none; background: none; border: 1px solid var(--line);
    border-radius: 9px; padding: 7px 10px; color: var(--ink);
    cursor: pointer;
}

/* ============ 搜索栏 ============ */
.search-bar { background: var(--bg); padding: 20px 0; border-bottom: 1px solid var(--line-soft); }
.search-box {
    max-width: 640px; margin: 0 auto;
    display: flex; align-items: center;
    border: 1px solid var(--line); border-radius: 999px;
    background: var(--bg); overflow: hidden;
    transition: border-color .2s, box-shadow .2s;
}
.search-box:focus-within {
    border-color: var(--primary-line);
    box-shadow: 0 0 0 4px var(--primary-soft);
}
.search-box .search-icon { padding-left: 20px; color: var(--ink-3); display: flex; }
.search-box input {
    flex: 1; border: none; outline: none; background: transparent;
    padding: 13px 14px; font-size: 15px; font-family: var(--font-sans);
    color: var(--ink);
}
.search-box input::placeholder { color: var(--ink-3); }
.search-box button {
    border: none; cursor: pointer; margin: 5px;
    background: var(--primary); color: #fff;
    padding: 9px 26px; border-radius: 999px;
    font-size: 15px; font-family: var(--font-sans);
    transition: background .2s;
}
.search-box button:hover { background: var(--primary-hover); }

/* ============ 首屏 ============ */
.banner-top { padding: 76px 0 60px; text-align: center; }
.banner-top h1 {
    font-family: var(--font-serif);
    font-size: 37px; font-weight: 700; color: var(--ink);
    letter-spacing: 1.5px; line-height: 1.4;
}
.banner-rule {
    width: 52px; height: 3px; border-radius: 2px;
    background: var(--primary); margin: 22px auto;
}
.banner-top p {
    font-size: 16px; color: var(--ink-2);
    max-width: 640px; margin: 0 auto; line-height: 1.9;
}

/* ============ 区块通用 ============ */
.section { padding: 60px 0; }
.section.tinted { background: var(--bg-tint); }
.section-head { margin-bottom: 36px; }
.section-head.center { text-align: center; }
.section-title {
    font-family: var(--font-serif);
    font-size: 26px; font-weight: 700; color: var(--ink);
    letter-spacing: .5px;
}
.section-head p { color: var(--ink-2); font-size: 15px; margin-top: 8px; }

/* ============ 分类卡片 ============ */
.category-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.category-card {
    background: var(--bg); border: 1px solid var(--line);
    border-radius: var(--radius); padding: 32px 28px;
    box-shadow: var(--shadow);
    transition: transform .25s, box-shadow .25s, border-color .25s;
    display: flex; flex-direction: column;
}
.category-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary-line);
    box-shadow: var(--shadow-hover);
}
.category-card h3 {
    font-family: var(--font-serif);
    font-size: 20px; font-weight: 700; color: var(--ink);
    margin-bottom: 10px;
}
.category-card p {
    font-size: 14px; color: var(--ink-2); line-height: 1.85;
    flex: 1;
}
.cat-link {
    margin-top: 18px; display: inline-flex; align-items: center; gap: 6px;
    color: var(--primary); font-size: 14px; font-weight: 500;
    transition: gap .2s;
}
.cat-link svg { transition: transform .2s; }
.category-card:hover .cat-link { gap: 10px; }

/* ============ 文章卡片 ============ */
.article-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.article-card {
    background: var(--bg); border: 1px solid var(--line);
    border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform .25s, box-shadow .25s;
    display: flex; flex-direction: column;
}
.article-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.article-cover { aspect-ratio: 4/3; overflow: hidden; background: var(--primary-soft); }
.article-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.article-card:hover .article-cover img { transform: scale(1.05); }
.article-body { padding: 22px 22px 20px; display: flex; flex-direction: column; flex: 1; }
.cat-label {
    align-self: flex-start; font-size: 12px;
    color: var(--primary); background: var(--primary-soft);
    padding: 3px 11px; border-radius: 6px; font-weight: 500;
}
.article-body h4 { margin: 14px 0 9px; }
.article-body h4 a {
    font-family: var(--font-serif);
    font-size: 17px; font-weight: 700; color: var(--ink);
    line-height: 1.55; transition: color .2s;
}
.article-body h4 a:hover { color: var(--primary); }
.article-body .desc {
    font-size: 14px; color: var(--ink-2);
    display: -webkit-box; -webkit-line-clamp: 2;
    -webkit-box-orient: vertical; overflow: hidden;
    flex: 1;
}
.article-meta {
    margin-top: 16px; padding-top: 13px;
    border-top: 1px solid var(--line-soft);
    font-size: 13px; color: var(--ink-3);
    display: flex; align-items: center; gap: 7px;
}

/* ============ 商家卡片 ============ */
.merchant-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.merchant-card {
    background: var(--bg); border: 1px solid var(--line);
    border-radius: var(--radius); padding: 26px 24px;
    box-shadow: var(--shadow);
    transition: transform .25s, box-shadow .25s, border-color .25s;
    display: flex; flex-direction: column;
}
.merchant-card:hover {
    transform: translateY(-4px); border-color: var(--primary-line);
    box-shadow: var(--shadow-hover);
}
.merchant-top {
    display: flex; justify-content: space-between; align-items: flex-start;
    gap: 12px; margin-bottom: 12px;
}
.merchant-card h4 {
    font-family: var(--font-serif);
    font-size: 18px; font-weight: 700; color: var(--ink); line-height: 1.4;
}
.rating { display: flex; align-items: center; gap: 4px; color: var(--primary); font-size: 14px; font-weight: 500; white-space: nowrap; }
.rating svg { width: 15px; height: 15px; }
.merchant-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 13px; }
.merchant-tags span {
    font-size: 12px; padding: 3px 11px;
    background: var(--primary-soft); color: var(--primary);
    border-radius: 999px;
}
.merchant-card .intro { font-size: 14px; color: var(--ink-2); flex: 1; }
.merchant-address {
    margin-top: 15px; padding-top: 13px; border-top: 1px solid var(--line-soft);
    display: flex; align-items: center; gap: 7px;
    font-size: 13px; color: var(--ink-3);
}
.merchant-address svg { flex-shrink: 0; color: var(--primary); }

/* ============ 合作区块 ============ */
.cooperation-banner {
    background: var(--bg-tint);
    border: 1px solid var(--line);
    border-radius: 18px; padding: 48px 40px; text-align: center;
}
.cooperation-banner h2 {
    font-family: var(--font-serif);
    font-size: 26px; font-weight: 700; color: var(--ink);
}
.cooperation-banner p {
    color: var(--ink-2); font-size: 15px;
    max-width: 660px; margin: 12px auto 26px; line-height: 1.9;
}
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 13px 34px; border-radius: 999px;
    font-size: 15px; font-family: var(--font-sans); font-weight: 500;
    cursor: pointer; transition: background .2s, transform .2s;
    border: 1px solid transparent;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-1px); }
.btn-ghost { background: var(--bg); color: var(--primary); border-color: var(--primary-line); }
.btn-ghost:hover { background: var(--primary-soft); }
.btn-sm { padding: 9px 22px; font-size: 14px; }

/* ============ 页脚 ============ */
.site-footer { background: #2E2928; color: #B6ABA7; padding: 52px 0 26px; margin-top: 8px; }
.footer-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
    margin-bottom: 36px;
}
.footer-col h3 { color: #F5EEEC; font-size: 15px; font-weight: 500; margin-bottom: 16px; }
.footer-col li { margin-bottom: 10px; }
.footer-col a {
    color: #B6ABA7; font-size: 14px; transition: color .2s;
    display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.footer-col a:hover { color: #fff; }
.copyright {
    text-align: center; padding-top: 22px;
    border-top: 1px solid #443B39; font-size: 13px; color: #948985;
    display: flex; align-items: center; justify-content: center; gap: 8px; flex-wrap: wrap;
}
.copyright-sep { color: #5A4F4C; }
.copyright-icp { font-size: 13px; }
.copyright-icp a { color: #948985; transition: color .2s; }
.copyright-icp a:hover { color: #B6ABA7; }
/* 备案号独立成行时（footer.html 自定义内容） */
.footer-beian { margin-top: 8px; font-size: 12px; color: #948985; text-align: center; }
.footer-beian a { color: #948985; transition: color .2s; }
.footer-beian a:hover { color: #B6ABA7; }

/* ============================================================
   以下为 CMS 扩展样式（沿用同一套设计令牌）
   ============================================================ */

/* ============ 页面横幅（内页） ============ */
.page-banner { padding: 56px 0 44px; text-align: center; }
.page-banner h1 {
    font-family: var(--font-serif); font-size: 30px; font-weight: 700;
    color: var(--ink); letter-spacing: 1px; line-height: 1.45;
}
.page-banner .banner-rule { margin: 18px auto; }
.page-banner p { font-size: 15px; color: var(--ink-2); max-width: 680px; margin: 0 auto; }

/* ============ 面包屑 ============ */
.breadcrumb {
    max-width: 1200px; margin: 0 auto; padding: 16px 24px 0;
    font-size: 13px; color: var(--ink-3);
    display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
}
.breadcrumb a { color: var(--ink-3); transition: color .2s; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--primary-line); }
.breadcrumb .current { color: var(--ink-2); }

/* ============ 列表页 ============ */
.list-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 32px; align-items: start; }
.list-main { min-width: 0; }
.list-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.list-grid .article-card { margin-bottom: 0; }
.list-item {
    background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
    padding: 24px; box-shadow: var(--shadow);
    transition: transform .25s, box-shadow .25s, border-color .25s;
    margin-bottom: 20px;
}
.list-item:hover { transform: translateY(-3px); border-color: var(--primary-line); box-shadow: var(--shadow-hover); }
.list-item h3 { margin: 0 0 8px; }
.list-item h3 a {
    font-family: var(--font-serif); font-size: 18px; font-weight: 700;
    color: var(--ink); line-height: 1.5; transition: color .2s;
}
.list-item h3 a:hover { color: var(--primary); }
.list-item .desc { font-size: 14px; color: var(--ink-2); margin-top: 6px; }
.list-item .article-meta { margin-top: 12px; padding-top: 11px; }
.list-empty {
    text-align: center; padding: 60px 20px; color: var(--ink-3); font-size: 14px;
}

/* 侧栏 */
.side-widget {
    background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
    padding: 22px; margin-bottom: 20px; box-shadow: var(--shadow);
}
.side-widget h3 {
    font-family: var(--font-serif); font-size: 16px; font-weight: 700;
    color: var(--ink); margin-bottom: 14px; padding-bottom: 10px;
    border-bottom: 1px solid var(--line-soft);
}
.side-widget ul li { margin-bottom: 10px; }
.side-widget ul a { color: var(--ink-2); font-size: 14px; transition: color .2s; display: flex; justify-content: space-between; gap: 10px; }
.side-widget ul a:hover { color: var(--primary); }
.side-widget .count { color: var(--ink-3); font-size: 12px; flex: none; }
.side-widget .side-post-title { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* 分页 */
.pagination { display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; margin-top: 36px; }
.pagination a, .pagination span {
    min-width: 38px; height: 38px; padding: 0 12px;
    display: inline-flex; align-items: center; justify-content: center;
    border: 1px solid var(--line); border-radius: 10px;
    color: var(--ink-2); font-size: 14px; background: var(--bg);
    transition: all .2s;
}
.pagination a:hover { border-color: var(--primary-line); color: var(--primary); }
.pagination .current { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ============ 文章详情 ============ */
.article-detail { max-width: 860px; margin: 0 auto; }
.article-head { text-align: center; padding: 40px 0 26px; }
.article-head h1 {
    font-family: var(--font-serif); font-size: 28px; font-weight: 700;
    color: var(--ink); line-height: 1.5; letter-spacing: .5px;
}
.article-head .article-meta { justify-content: center; border-top: 0; margin-top: 14px; padding-top: 0; }
.article-head .cat-label { margin-bottom: 16px; }
.article-cover-full { border-radius: var(--radius); overflow: hidden; margin-bottom: 30px; box-shadow: var(--shadow); }
.article-cover-full img { width: 100%; max-height: 420px; object-fit: cover; }

/* GEO 直接答案块 */
.geo-answer {
    background: var(--primary-soft); border: 1px solid var(--primary-line);
    border-radius: var(--radius); padding: 20px 24px; margin: 22px 0;
}
.geo-answer .geo-answer-label {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 12px; font-weight: 700; color: var(--primary-hover);
    letter-spacing: 1px; margin-bottom: 8px;
}
.geo-answer p { font-size: 15px; color: var(--ink); line-height: 1.9; }

/* 正文排版 */
.prose { font-size: 16px; color: var(--ink); line-height: 1.95; }
.prose h2 {
    font-family: var(--font-serif); font-size: 22px; font-weight: 700; color: var(--ink);
    margin: 34px 0 14px; padding-left: 14px; border-left: 4px solid var(--primary);
    line-height: 1.5;
}
.prose h3 { font-family: var(--font-serif); font-size: 18px; font-weight: 700; color: var(--ink); margin: 26px 0 10px; }
.prose p { margin: 14px 0; }
.prose ul, .prose ol { margin: 14px 0; padding-left: 26px; }
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li { margin: 8px 0; }
.prose img { max-width: 100%; border-radius: 10px; margin: 16px auto; }
.prose a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.prose a:hover { color: var(--primary-hover); }
.prose blockquote {
    border-left: 3px solid var(--primary-line); background: var(--bg-tint);
    padding: 14px 20px; margin: 18px 0; border-radius: 0 10px 10px 0;
    color: var(--ink-2);
}
.prose table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 14px; }
.prose table caption {
    caption-side: top; text-align: left; padding: 0 0 8px;
    font-family: var(--font-serif); font-size: 14px; font-weight: 600; color: var(--ink-2);
}
.prose table th, .prose table td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top; }
.prose table th { background: var(--primary-soft); color: var(--ink); font-weight: 600; }
.prose table tr:nth-child(even) td { background: var(--bg-tint); }

/* 来源与更新时间 */
.article-source {
    margin-top: 34px; padding: 16px 20px;
    background: var(--bg-tint); border: 1px solid var(--line); border-radius: 12px;
    font-size: 13px; color: var(--ink-2); line-height: 1.9;
}
.article-source strong { color: var(--ink); }
.article-updated { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--ink-3); }

/* 标签区块已移除（搜索改为标题匹配后无点击价值） */

/* 无结果相关搜索建议 */
.search-suggest { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin-top: 18px; }
.search-suggest a {
    font-size: 13px; color: var(--primary); background: var(--primary-soft);
    padding: 5px 14px; border-radius: 999px; transition: background .2s;
}
.search-suggest a:hover { background: var(--primary-line); }

/* FAQ 区块 */
.faq-block { margin: 34px 0; }
.faq-block .faq-title { margin-bottom: 16px; }
.faq-item {
    border: 1px solid var(--line); border-radius: 12px; margin-bottom: 12px;
    overflow: hidden; background: var(--bg);
}
.faq-item summary {
    display: flex; justify-content: space-between; align-items: center; gap: 14px;
    padding: 15px 20px; cursor: pointer; list-style: none;
    font-weight: 700; font-size: 15px; color: var(--ink);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 20px; color: var(--primary); font-weight: 400; transition: transform .2s; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item[open] summary { border-bottom: 1px solid var(--line-soft); }
.faq-item .faq-a { padding: 15px 20px; font-size: 14px; color: var(--ink-2); line-height: 1.9; background: var(--bg-tint); }

/* 文章页 FAQ：直接展开（GEO 答案单元，全文可见便于 AI 摘取） */
.faq-item-expand {
    border: 1px solid var(--line); border-radius: 12px; margin-bottom: 12px;
    overflow: hidden; background: var(--bg); box-shadow: var(--shadow);
}
.faq-item-expand .faq-q {
    display: flex; align-items: center; gap: 10px;
    padding: 14px 20px; background: var(--primary-soft);
    font-family: var(--font-serif); font-size: 16px; font-weight: 700; color: var(--ink);
    line-height: 1.6;
}
.faq-q-badge, .faq-a-badge {
    flex: none; width: 26px; height: 26px; border-radius: 8px;
    display: inline-flex; align-items: center; justify-content: center;
    font-family: var(--font-sans); font-size: 14px; font-weight: 700;
}
.faq-q-badge { background: var(--primary); color: #fff; }
.faq-item-expand .faq-a {
    display: flex; align-items: flex-start; gap: 10px;
    padding: 14px 20px 16px; background: var(--bg-tint);
    font-size: 14px; color: var(--ink-2); line-height: 1.9;
}
.faq-a-badge { background: #fff; color: var(--primary); border: 1px solid var(--primary-line); }

/* 相关阅读 */
.related-posts { margin-top: 40px; }
.related-posts .section-title { font-size: 20px; margin-bottom: 20px; }

/* 上一篇/下一篇 */
.post-nav {
    margin-top: 40px; display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.post-nav-item {
    display: block; background: var(--bg); border: 1px solid var(--line);
    border-radius: 14px; padding: 16px 20px; box-shadow: var(--shadow);
    transition: transform .2s, border-color .2s, box-shadow .2s;
}
.post-nav-item:hover { transform: translateY(-2px); border-color: var(--primary-line); box-shadow: var(--shadow-hover); }
.post-nav-item.next { text-align: right; }
.post-nav-label {
    display: block; font-size: 12px; color: var(--ink-2); letter-spacing: 1px; margin-bottom: 6px;
}
.post-nav-title {
    font-family: var(--font-serif); font-size: 15px; font-weight: 600; color: var(--ink); line-height: 1.6;
}
@media (max-width: 768px) {
    .post-nav { grid-template-columns: 1fr; }
}

/* ============ 表单页面 ============ */
.form-panel {
    max-width: 680px; margin: 0 auto;
    background: var(--bg); border: 1px solid var(--line); border-radius: 18px;
    padding: 36px; box-shadow: var(--shadow);
}
.form-panel .field { display: grid; gap: 7px; margin-bottom: 18px; }
.form-panel .field span { font-size: 13px; color: var(--ink-2); }
.form-panel .field span .req { color: var(--primary); }
.form-panel input, .form-panel select, .form-panel textarea {
    width: 100%; border: 1px solid var(--line); border-radius: 10px;
    padding: 12px 14px; font-size: 15px; font-family: var(--font-sans);
    color: var(--ink); background: var(--bg); outline: none;
    transition: border-color .2s, box-shadow .2s;
}
.form-panel input:focus, .form-panel select:focus, .form-panel textarea:focus {
    border-color: var(--primary-line); box-shadow: 0 0 0 4px var(--primary-soft);
}
.form-panel textarea { resize: vertical; min-height: 120px; }
.form-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 8px; }
.form-note { font-size: 13px; color: var(--ink-3); margin-top: 16px; line-height: 1.8; }

/* 提示条 */
.alert { border-radius: 12px; padding: 14px 18px; margin: 18px 0; font-size: 14px; line-height: 1.8; }
.alert-success { background: #F0F9F1; color: #2F6B39; border: 1px solid #D2EBD6; }
.alert-error { background: #FDF1F0; color: #9C3F3B; border: 1px solid #F3D5D3; }

/* ============ 专题卡片 ============ */
.topic-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.topic-card {
    background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
    padding: 26px; box-shadow: var(--shadow);
    transition: transform .25s, box-shadow .25s, border-color .25s;
}
.topic-card:hover { transform: translateY(-4px); border-color: var(--primary-line); box-shadow: var(--shadow-hover); }
.topic-card h3 { margin-bottom: 8px; }
.topic-card h3 a {
    font-family: var(--font-serif); font-size: 19px; font-weight: 700; color: var(--ink);
    transition: color .2s;
}
.topic-card h3 a:hover { color: var(--primary); }
.topic-card .desc { font-size: 14px; color: var(--ink-2); }
.topic-card .topic-meta { margin-top: 14px; font-size: 13px; color: var(--ink-3); display: flex; gap: 14px; }

/* 服务流程 */
.steps-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.step-card { text-align: center; padding: 28px 22px; background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.step-num {
    width: 44px; height: 44px; border-radius: 50%; margin: 0 auto 14px;
    background: var(--primary); color: #fff; font-family: var(--font-serif);
    font-size: 20px; font-weight: 700; display: flex; align-items: center; justify-content: center;
}
.step-card h3 { font-family: var(--font-serif); font-size: 17px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.step-card p { font-size: 14px; color: var(--ink-2); }

/* ============ 404 页 ============ */
.error-code {
    font-family: var(--font-serif);
    font-size: 92px; font-weight: 700; color: var(--primary);
    line-height: 1.15; letter-spacing: 4px;
}
.error-links { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-top: 22px; }

/* ============ 网站地图（sitemap.html） ============ */
.sitemap-group { margin-bottom: 34px; }
.sitemap-group .section-title { font-size: 20px; margin-bottom: 16px; }
.sitemap-sub {
    font-family: var(--font-serif); font-size: 15px; font-weight: 700; color: var(--ink);
    margin: 16px 0 6px; padding-left: 12px; border-left: 3px solid var(--primary);
}
.sitemap-links { margin: 0 0 8px; }
.sitemap-links ul { column-count: 3; column-gap: 40px; }
.sitemap-links li { break-inside: avoid; margin-bottom: 4px; }
.sitemap-links a {
    color: var(--ink-2); font-size: 14px; line-height: 2;
    word-break: break-all; transition: color .2s;
}
.sitemap-links a:hover { color: var(--primary); }

/* ============ 响应式 ============ */
@media (max-width: 960px) {
    .category-grid, .article-grid, .merchant-grid { grid-template-columns: 1fr; max-width: 520px; margin-left: auto; margin-right: auto; }
    .list-wrap { grid-template-columns: 1fr; }
    .list-grid { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; }
    .side-widget { max-width: 520px; margin-left: auto; margin-right: auto; width: 100%; }
    .steps-grid { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; }
    .topic-grid { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; }
}
@media (max-width: 768px) {
    .header-inner { height: auto; padding: 14px 0; flex-wrap: wrap; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .sitemap-links ul { column-count: 2; }
    .error-code { font-size: 64px; }
    .main-nav { display: none; width: 100%; }
    .main-nav.open { display: block; }
    .main-nav ul { flex-direction: column; gap: 2px; padding-top: 10px; }
    .main-nav a { padding: 12px 10px; }
    .main-nav a::after { display: none; }
    .mobile-menu-btn { display: block; }
    .banner-top { padding: 52px 0 40px; }
    .banner-top h1 { font-size: 28px; }
    .section { padding: 44px 0; }
    .cooperation-banner { padding: 36px 24px; }
    .search-box input { font-size: 16px; }
    .cat-link { padding: 8px 0; }
    .form-panel { padding: 26px 20px; }
    .article-head h1 { font-size: 23px; }
    .page-banner h1 { font-size: 24px; }
    .prose { font-size: 15px; }
}
@media (max-width: 520px) {
    .footer-grid { grid-template-columns: 1fr; }
    .sitemap-links ul { column-count: 1; }
}