/* ═════════ 知创简报系列 - 统一前端样式 ═════════ */
/* 设计语言与简报系统(知创简报)保持一致 */

:root {
  --ink: #1a1714; --ink-soft: #4a4540; --ink-muted: #8a8480;
  --paper: #faf8f5; --surface: #ffffff;
  --border: #e8e4df; --divider: #f2efe9;
  --accent: #1e4d8c; --accent-soft: #e8eef6;
  --accent-warm: #c7552a; --accent-warm-soft: #fdf0ea;
  --success: #2d7a4f; --success-soft: #edf7f0;
  --radius: 2px; --radius-sm: 4px;
  --shadow: 0 1px 3px rgba(0,0,0,.06);
  --max-width: 1280px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--paper);color:var(--ink);line-height:1.65;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
}

a{color:var(--accent);text-decoration:none;transition:color .15s}
a:hover{color:var(--accent-warm)}
img{max-width:100%;height:auto}

/* ═════════ Layout ═════════ */
.site-wrap{max-width:var(--max-width);margin:0 auto;padding:0 24px}
@media(max-width:768px){.site-wrap{padding:0 16px}}

/* ═════════ Header ═════════ */
.site-header{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}
.header-inner{max-width:var(--max-width);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:56px}
.header-brand{display:flex;align-items:baseline;gap:12px}
.header-brand .brand-name{font-family:Georgia,"PingFang SC","Microsoft YaHei",serif;font-size:20px;font-weight:700;color:var(--ink)}
.header-brand .brand-tag{font-size:11px;color:var(--ink-muted);letter-spacing:.04em}
.header-nav{display:flex;gap:0;align-items:center}
.header-nav a{padding:8px 16px;font-size:13px;font-weight:500;color:var(--ink-soft);border-bottom:2px solid transparent;transition:all .15s;white-space:nowrap}
.header-nav a:hover,.header-nav a.active{color:var(--ink);border-bottom-color:var(--ink)}
.header-actions{display:flex;align-items:center;gap:10px}
.header-actions .btn-login{padding:6px 16px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);font-size:12px;font-weight:500;cursor:pointer;color:var(--ink-soft);font-family:inherit;transition:all .15s}
.header-actions .btn-login:hover{border-color:var(--accent);color:var(--accent)}
.header-actions .btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.header-actions .btn-primary:hover{background:#1a4580;color:#fff}
@media(max-width:768px){
  .header-inner{padding:0 16px;height:auto;flex-wrap:wrap;gap:8px;padding:10px 16px}
  .header-nav{width:100%;overflow-x:auto;justify-content:flex-start}
  .header-nav a{padding:6px 12px;font-size:12px}
  .header-brand .brand-tag{display:none}
}

/* ═════════ Footer ═════════ */
.site-footer{text-align:center;padding:32px 24px;border-top:1px solid var(--border);margin-top:48px;background:var(--surface)}
.site-footer p{font-size:12px;color:var(--ink-muted);line-height:1.8}
.site-footer a{color:var(--ink-muted);transition:color .15s}
.site-footer a:hover{color:var(--accent)}

/* ═════════ Page Title ═════════ */
.page-hero{padding:32px 0 20px;border-bottom:1px solid var(--border);margin-bottom:24px}
.page-title{font-family:Georgia,"PingFang SC","Microsoft YaHei",serif;font-size:24px;font-weight:700;color:var(--ink);margin-bottom:6px}
.page-sub{font-size:13px;color:var(--ink-muted)}

/* ═════════ Tabs / Province Nav ═════════ */
.province-nav{display:flex;gap:4px;flex-wrap:wrap;margin-bottom:20px}
.province-nav a{padding:6px 16px;border:1px solid var(--border);border-radius:var(--radius);font-size:12px;font-weight:500;color:var(--ink-soft);transition:all .15s;white-space:nowrap;background:var(--surface)}
.province-nav a:hover{border-color:var(--accent);color:var(--accent)}
.province-nav a.current{background:var(--ink);color:var(--surface);border-color:var(--ink)}
.city-nav{display:flex;gap:4px;flex-wrap:wrap;margin-bottom:20px}
.city-nav a{padding:4px 12px;font-size:11px;border:1px solid var(--divider);border-radius:var(--radius);color:var(--ink-soft);transition:all .15s;background:var(--surface)}
.city-nav a:hover,.city-nav a.current{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}

/* ═════════ Document List ═════════ */
.doc-list{}
.doc-item{display:flex;gap:16px;padding:14px 0;border-bottom:1px solid var(--divider);transition:background .15s;align-items:baseline;cursor:pointer}
.doc-item:hover{background:rgba(0,0,0,.01);margin:0 -12px;padding-left:12px;padding-right:12px}
.doc-item .doc-tag{padding:2px 8px;border-radius:var(--radius);font-size:10px;font-weight:700;letter-spacing:.03em;white-space:nowrap;flex-shrink:0;margin-top:2px}
.doc-tag.national{background:var(--accent-soft);color:var(--accent)}
.doc-tag.shandong{background:var(--accent-warm-soft);color:var(--accent-warm)}
.doc-tag.qingdao{background:var(--success-soft);color:var(--success)}
.doc-item .doc-body{flex:1;min-width:0}
.doc-item .doc-title{font-size:15px;font-weight:600;line-height:1.4;color:var(--ink);margin-bottom:3px;transition:color .15s}
.doc-item:hover .doc-title{color:var(--accent)}
.doc-item .doc-meta{font-size:11px;color:var(--ink-muted);display:flex;gap:12px}
.doc-item .doc-date{font-size:11px;color:var(--ink-muted);flex-shrink:0}
@media(max-width:640px){
  .doc-item{flex-wrap:wrap;gap:6px}
  .doc-item .doc-date{width:100%}
}

/* ═════════ Detail ═════════ */
.detail-article{max-width:760px;margin:0 auto}
.detail-article .detail-title{font-family:Georgia,"PingFang SC","Microsoft YaHei",serif;font-size:22px;font-weight:700;line-height:1.45;margin-bottom:12px;color:var(--ink)}
.detail-article .detail-meta{font-size:12px;color:var(--ink-muted);margin-bottom:24px;display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.detail-article .detail-content{font-size:15px;line-height:1.9;color:var(--ink)}
.detail-article .detail-content p{margin-bottom:16px}
.detail-article .detail-content h2{font-size:18px;font-weight:700;margin:24px 0 12px}
.detail-article .detail-content h3{font-size:16px;font-weight:600;margin:20px 0 10px}
.detail-article .detail-content table{border-collapse:collapse;width:100%;margin:16px 0;font-size:13px}
.detail-article .detail-content td,.detail-article .detail-content th{border:1px solid var(--border);padding:8px 12px;text-align:left}
.detail-article .detail-content th{background:var(--paper);font-weight:600}
@media(max-width:640px){
  .detail-article .detail-title{font-size:18px}
  .detail-article .detail-content{font-size:14px}
}

.detail-nav{display:flex;justify-content:space-between;margin-top:32px;padding-top:16px;border-top:1px solid var(--divider);font-size:13px}
.detail-nav a{color:var(--ink-soft);max-width:45%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.detail-nav a:hover{color:var(--accent)}

/* ═════════ Pagination ═════════ */
.pager{display:flex;justify-content:center;gap:4px;margin:24px 0}
.pager li{list-style:none}
.pager li a,.pager li span{display:block;padding:6px 14px;border:1px solid var(--border);border-radius:var(--radius);font-size:13px;color:var(--ink-soft);transition:all .15s;background:var(--surface);cursor:pointer}
.pager li.active span{background:var(--ink);color:var(--surface);border-color:var(--ink)}
.pager li.disabled span{opacity:.3;cursor:default}
.pager li a:hover{border-color:var(--accent);color:var(--accent)}

/* ═════════ Patent Cards ═════════ */
.patent-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;margin-top:16px}
.patent-card{padding:16px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);transition:all .15s}
.patent-card:hover{border-color:var(--accent);box-shadow:var(--shadow)}
.patent-card .patent-type{font-size:10px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--accent);margin-bottom:6px}
.patent-card .patent-no{font-size:12px;color:var(--ink-muted);font-family:monospace;margin-bottom:4px}
.patent-card .patent-name{font-size:14px;font-weight:600;line-height:1.4;color:var(--ink);margin-bottom:8px}
.patent-card .patent-footer{display:flex;justify-content:space-between;align-items:center;font-size:11px;color:var(--ink-muted)}
.patent-card .patent-price{font-family:Georgia,serif;font-size:16px;font-weight:700;color:var(--accent-warm)}

/* ═════════ Search Bar ═════════ */
.search-bar{display:flex;gap:8px;margin-bottom:20px}
.search-bar input{flex:1;padding:10px 16px;border:1px solid var(--border);border-radius:var(--radius);font-size:14px;font-family:inherit;background:var(--surface);color:var(--ink);outline:none;transition:border-color .15s}
.search-bar input:focus{border-color:var(--accent)}
.search-bar button{padding:10px 20px;background:var(--ink);color:var(--surface);border:none;border-radius:var(--radius);font-size:14px;font-weight:500;cursor:pointer;font-family:inherit;transition:background .15s}
.search-bar button:hover{background:var(--accent)}

/* ═════════ Empty State ═════════ */
.empty-block{text-align:center;padding:64px 20px}
.empty-block .empty-icon{font-size:48px;margin-bottom:12px;opacity:.4}
.empty-block .empty-text{font-size:15px;color:var(--ink-muted)}

/* ═════════ Stats Banner ═════════ */
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:24px}
.stat-cell{text-align:center;padding:20px 12px;background:var(--surface);border:1px solid var(--divider);border-radius:var(--radius)}
.stat-cell .stat-num{font-family:Georgia,serif;font-size:28px;font-weight:700;color:var(--accent);line-height:1}
.stat-cell .stat-label{font-size:11px;color:var(--ink-muted);margin-top:4px}
@media(max-width:640px){.stats-row{grid-template-columns:repeat(2,1fr)}}

/* ═════════ Utilities ═════════ */
.flex{display:flex}.flex-wrap{flex-wrap:wrap}.gap-8{gap:8px}.gap-12{gap:12px}
.text-center{text-align:center}
.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mb-16{margin-bottom:16px}.mb-24{margin-bottom:24px}