/* ===== 案例中心 · 列表页 / 详情页 专属样式 ===== */

/* ---------- 列表页：行业筛选 Tab ---------- */
.case-list-main{background:var(--bg);padding:0 0 80px}
.filter-tabs{display:flex;justify-content:center;gap:12px;padding:34px 0 4px;flex-wrap:wrap}
.filter-tabs .tab{padding:9px 26px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:14px;color:var(--text-sub);cursor:pointer;transition:all .22s}
.filter-tabs .tab:hover{color:var(--brand);border-color:var(--brand)}
.filter-tabs .tab.active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}

/* ---------- 案例卡片 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;margin-top:34px}
.case-card{background:#fff;border-radius:18px;overflow:hidden;box-shadow:var(--shadow);transition:all .28s;display:flex;flex-direction:column}
.case-card:hover{transform:translateY(-6px);box-shadow:0 16px 40px rgba(31,36,48,.13)}
.case-card .cc-cover{position:relative;display:block;aspect-ratio:16/11;overflow:hidden;background:#F0F2FA}
.case-card .cc-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.case-card:hover .cc-cover img{transform:scale(1.05)}
.case-card .cc-industry{position:absolute;top:14px;left:14px;color:#fff;font-size:12px;padding:3px 12px;border-radius:999px}
.case-card .cc-brand{position:absolute;bottom:14px;left:14px;color:#fff;font-size:13px;font-weight:700;background:rgba(16,20,54,.6);padding:4px 12px;border-radius:999px;backdrop-filter:blur(4px)}
.case-card .cc-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.case-card .cc-body h3{font-size:18px;font-weight:700;line-height:1.55;margin-bottom:8px}
.case-card .cc-body h3 a:hover{color:var(--brand)}
.case-card .cc-summary{font-size:13.5px;color:var(--text-sub);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:14px}
.case-card .cc-results{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.case-card .cc-results span{font-size:12px;color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:3px 10px}
.case-card .cc-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:14px;border-top:1px solid var(--line)}
.case-card .cc-meta{font-size:12.5px;color:var(--text-light)}
.case-card .cc-more{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:13.5px;font-weight:600}
.case-card .cc-more:hover{text-decoration:underline}

/* 行业标签配色 */
.cc-industry.beauty{background:linear-gradient(90deg,#E86FA4,#F0524C)}
.cc-industry.apparel{background:linear-gradient(90deg,#3EC0C8,#3E8BFF)}
.cc-industry.health{background:linear-gradient(90deg,#4CBE6E,#3E9B4C)}
.cc-industry.sports{background:linear-gradient(90deg,#3E3EFF,#8A5BFF)}

/* ---------- 详情页 Banner ---------- */
.case-detail-banner{position:relative;background:linear-gradient(135deg,#101436 0%,#1D2258 55%,#3339A0 130%);padding:58px 0 60px;text-align:center;color:#fff;overflow:hidden}
.case-detail-banner::after{content:"";position:absolute;inset:0;background:radial-gradient(900px 400px at 50% 120%,rgba(62,62,255,.28),transparent 70%);pointer-events:none}
.case-detail-banner .crumb{position:relative;z-index:2;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:18px}
.case-detail-banner .crumb a{color:rgba(255,255,255,.9)}
.case-detail-banner .crumb a:hover{color:#fff}
.case-detail-banner .cd-tag{position:relative;z-index:2;display:inline-block;font-size:12px;color:#fff;padding:3px 14px;border-radius:999px;margin-bottom:16px}
.case-detail-banner .cd-tag.beauty{background:linear-gradient(90deg,#E86FA4,#F0524C)}
.case-detail-banner .cd-tag.apparel{background:linear-gradient(90deg,#3EC0C8,#3E8BFF)}
.case-detail-banner .cd-tag.health{background:linear-gradient(90deg,#4CBE6E,#3E9B4C)}
.case-detail-banner .cd-tag.sports{background:linear-gradient(90deg,#3E3EFF,#8A5BFF)}
.case-detail-banner h1{position:relative;z-index:2;font-size:30px;font-weight:800;line-height:1.5;max-width:900px;margin:0 auto}
.case-detail-banner .cd-brand{position:relative;z-index:2;margin-top:14px;font-size:15px;font-weight:700;letter-spacing:2px;color:rgba(255,255,255,.85)}
.case-detail-banner .cd-meta{position:relative;z-index:2;margin-top:14px;font-size:13px;color:rgba(255,255,255,.7);display:flex;justify-content:center;gap:22px;flex-wrap:wrap}

/* ---------- 详情页主体 ---------- */
.case-detail-main{background:#fff;padding:44px 0 80px}
.case-detail-grid{display:grid;grid-template-columns:1fr 340px;gap:40px;align-items:start}
.case-detail-article{min-width:0}
.case-detail-article .cd-cover{width:100%;border-radius:18px;margin-bottom:26px;box-shadow:var(--shadow);aspect-ratio:16/9;object-fit:cover}
.cd-lead{font-size:16px;font-weight:600;color:var(--text);line-height:2;border-left:4px solid var(--brand);padding-left:16px;margin-bottom:26px}
.cd-content{font-size:15px;color:#2B3040;line-height:2.05}
.cd-content h2{font-size:22px;font-weight:800;color:var(--text);margin:34px 0 14px;padding-left:14px;border-left:4px solid var(--brand)}
.cd-content h2:first-child{margin-top:0}
.cd-content p{margin-bottom:16px}
.cd-content ul{margin:0 0 18px;padding-left:2px}
.cd-content ul li{position:relative;padding-left:20px;margin-bottom:10px}
.cd-content ul li::before{content:"";position:absolute;left:2px;top:11px;width:6px;height:6px;border-radius:50%;background:var(--brand)}
.cd-content blockquote{margin:22px 0;padding:18px 22px;background:var(--brand-soft);border-radius:12px;border-left:4px solid var(--brand);color:var(--text-sub);font-size:14.5px}
.cd-content strong{color:var(--text)}

/* 核心成果带 */
.cd-results{margin:30px 0 6px;background:linear-gradient(135deg,#EEF2FF,#F5F1FF);border-radius:16px;padding:24px 26px}
.cd-results h3{font-size:16px;font-weight:700;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.cd-results h3::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--brand)}
.cd-results ul{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.cd-results ul li{position:relative;padding-left:22px;font-size:14px;color:var(--text-sub);line-height:1.7}
.cd-results ul li::before{content:"✓";position:absolute;left:0;top:0;color:var(--brand);font-weight:700}

/* 上一篇 / 下一篇 */
.cd-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:34px}
.cd-nav a{display:block;padding:18px 20px;border:1px solid var(--line);border-radius:14px;transition:all .22s;background:#fff}
.cd-nav a:hover{border-color:var(--brand);box-shadow:0 8px 24px rgba(62,62,255,.1)}
.cd-nav a.prev{text-align:left}
.cd-nav a.next{text-align:right}
.cd-nav .cn-label{font-size:12px;color:var(--text-light);margin-bottom:6px}
.cd-nav .cn-title{font-size:14px;font-weight:600;color:var(--text);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cd-nav a:hover .cn-title{color:var(--brand)}

/* ---------- 侧边栏 ---------- */
.case-detail-side{position:sticky;top:86px;display:flex;flex-direction:column;gap:22px}
.side-card{background:var(--bg);border-radius:16px;padding:22px}
.side-card h4{font-size:16px;font-weight:700;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.side-card h4::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--brand)}
.related-list li{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);cursor:pointer}
.related-list li:last-child{border-bottom:none;padding-bottom:0}
.related-list .r-cover{flex:0 0 66px;width:66px;height:52px;border-radius:8px;overflow:hidden;background:#fff}
.related-list .r-cover img{width:100%;height:100%;object-fit:cover}
.related-list .r-title{font-size:13px;color:var(--text-sub);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-list li:hover .r-title{color:var(--brand)}
.side-card .side-cta{background:linear-gradient(135deg,#161A3E,#3E3EFF);color:#fff;border-radius:12px;padding:22px;text-align:center}
.side-card .side-cta h5{font-size:16px;font-weight:700;margin-bottom:8px}
.side-card .side-cta p{font-size:12.5px;color:rgba(255,255,255,.75);line-height:1.7;margin-bottom:16px}
.side-card .side-cta a{display:inline-block;background:#fff;color:#161A3E;padding:9px 24px;border-radius:999px;font-size:13px;font-weight:600;transition:all .2s}
.side-card .side-cta a:hover{background:var(--brand);color:#fff}
.side-contact p{font-size:13px;color:var(--text-sub);line-height:1.9}
.side-contact a{color:var(--brand)}
.side-contact a:hover{text-decoration:underline}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .case-detail-grid{grid-template-columns:1fr}
  .case-detail-side{position:static;flex-direction:row;flex-wrap:wrap}
  .side-card{flex:1 1 240px}
}
@media (max-width:640px){
  .case-grid{grid-template-columns:1fr}
  .cd-results ul{grid-template-columns:1fr}
  .case-detail-banner h1{font-size:22px}
  .cd-nav{grid-template-columns:1fr}
  .case-detail-side{flex-direction:column}
}