/* ============================================================
   合作案例详情页 · bc-adetail.css（B2 版式）
   2026-10-19 上线 · 作用域 .ad-page / .ad-* 前缀，避免与全站样式冲突
   令牌：深蓝 #021a40→#023793，金 #f7c433
   ============================================================ */

/* ---------- Banner ---------- */
.ad-page .ad-banner{position:relative;overflow:hidden;padding:50px 0 46px;background:#021a40;
  background-image:linear-gradient(160deg,#021a40 0%,#022a6e 70%,#023793 135%)}
.ad-page .ad-banner .glow{position:absolute;inset:0;z-index:2;background:
  radial-gradient(ellipse 55% 80% at 88% 0%,rgba(4,80,194,.45),transparent 60%),
  radial-gradient(ellipse 40% 70% at 4% 100%,rgba(247,196,51,.10),transparent 55%)}
.ad-page .ad-wrap{position:relative;z-index:3;width:1430px;max-width:100%;margin:0 auto;padding:0 15px;box-sizing:border-box}
.ad-page .ad-banner em{display:block;font-style:normal;color:#f7c433;font-size:11px;letter-spacing:5px;line-height:1.4}
.ad-page .ad-banner h1{margin:10px 0 0;color:#fff;font-size:33px;font-weight:600;letter-spacing:8px;line-height:1.35;
  display:flex;align-items:baseline;flex-wrap:wrap;gap:0 22px}
.ad-page .ad-crumbs{font-size:12.5px;font-weight:400;color:rgba(255,255,255,.62);letter-spacing:.5px;white-space:nowrap}
.ad-page .ad-crumbs a{color:rgba(255,255,255,.62);text-decoration:none}
.ad-page .ad-crumbs a:hover{color:#fff}
.ad-page .ad-crumbs i{font-style:normal;margin:0 8px;color:rgba(255,255,255,.32)}
.ad-page .ad-crumbs span{color:#fff}
.ad-page .ad-banner .sell{margin:14px 0 0;color:rgba(255,255,255,.84);font-size:13.5px;letter-spacing:1px;line-height:1.8}
.ad-page .ad-banner .sell b{color:#f7c433;font-weight:600}

/* ---------- 骨架 ---------- */
.ad-page{background:#f4f6fa;color:#1b2a44;font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
.ad-page *{box-sizing:border-box}
.ad-page img{max-width:100%;display:block;border:0}
.ad-page .ad-body{padding:40px 0 56px}
.ad-page .ad-cols{display:flex;gap:22px;align-items:flex-start}
.ad-page .ad-main{flex:1 1 auto;min-width:0}
.ad-page .ad-side{flex:0 0 370px;display:flex;flex-direction:column;gap:18px;position:sticky;top:20px}
.ad-page .ad-card{background:#fff;border-radius:14px;box-shadow:0 4px 16px rgba(20,40,80,.06)}
.ad-page .ad-meta{display:flex;align-items:center;gap:20px;flex-wrap:wrap;font-size:13.5px;color:#5a6a83}
.ad-page .ad-meta b{color:#1b2a44;font-weight:600}

/* ---------- 文章卡 ---------- */
.ad-page .ad-art{padding:0;overflow:hidden}
.ad-page .ad-hd{padding:28px 34px 22px;border-bottom:1px solid #eef2f7}
.ad-page .ad-hd .ad-kind{display:inline-flex;align-items:center;gap:7px;font-size:11.5px;letter-spacing:2px;color:#023793;background:rgba(2,55,147,.07);border-radius:5px;padding:4px 10px}
.ad-page .ad-hd .ad-kind i{font-style:normal;color:#f0a800}
.ad-page .ad-hd h2{margin:14px 0 0;font-size:26px;font-weight:700;letter-spacing:1px;color:#1b2a44;line-height:1.42}
.ad-page .ad-hd .ad-meta{margin-top:14px}
.ad-page .ad-hd .sp{margin-left:auto;display:flex;align-items:center;gap:16px}
.ad-page .ad-hd .sp a{color:#8b98ab;font-size:12.5px;text-decoration:none;cursor:pointer;transition:.18s}
.ad-page .ad-hd .sp a:hover{color:#023793}

/* 项目概述 */
.ad-page .ad-brief{padding:20px 34px 0}
.ad-page .ad-brief .lb{display:flex;align-items:center;gap:8px;font-size:12px;letter-spacing:2px;color:#8b98ab}
.ad-page .ad-brief .lb::before{content:"";width:3px;height:13px;border-radius:2px;background:#f7c433}
.ad-page .ad-brief p{margin:10px 0 0;font-size:14.5px;line-height:2;color:#3d4f6b}
.ad-page .ad-brief p b{color:#1b2a44;font-weight:600}

/* ---------- 图册 ---------- */
.ad-page .ad-fig{margin:22px 34px 0;border:1px solid #eaeff7;border-radius:12px;overflow:hidden;background:#fbfcfe}
.ad-page .ad-figtools{display:flex;align-items:center;gap:14px;padding:11px 16px;background:#f5f8fd;border-bottom:1px solid #eaeff7;font-size:12.5px;color:#8b98ab}
.ad-page .ad-figtools .idx{display:inline-flex;align-items:center;gap:7px;flex:none}
.ad-page .ad-figtools .idx i{font-style:normal;font-weight:700;color:#023793;background:#fff;border:1px solid #e3ebf7;border-radius:5px;padding:2px 7px}
.ad-page .ad-figtools .cap{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#5a6a83}
.ad-page .ad-figtools .ops{display:flex;gap:4px;flex:none}
.ad-page .ad-figtools .ops a{color:#5a6a83;font-size:12.5px;padding:4px 9px;border-radius:6px;text-decoration:none;cursor:pointer;transition:.18s}
.ad-page .ad-figtools .ops a:hover{background:#fff;color:#023793}
.ad-page .ad-figbody{position:relative;max-height:980px;overflow:hidden}
.ad-page .ad-figbody img{width:100%;cursor:zoom-in}
.ad-page .ad-figbody::after{content:"";position:absolute;left:0;right:0;bottom:0;height:150px;background:linear-gradient(180deg,rgba(251,252,254,0),#fbfcfe 78%);pointer-events:none}
.ad-page .ad-figbody.open{max-height:none}
.ad-page .ad-figbody.open::after{display:none}
.ad-page .ad-figmore{position:relative;z-index:2;display:flex;justify-content:center;padding:0 0 16px;margin-top:-6px}
.ad-page .ad-figmore a{display:inline-flex;align-items:center;gap:7px;height:38px;padding:0 22px;border:1px solid #dfe6f1;background:#fff;border-radius:20px;font-size:13px;color:#3d4f6b;text-decoration:none;cursor:pointer;transition:.18s}
.ad-page .ad-figmore a:hover{border-color:#023793;color:#023793}
.ad-page .ad-figcap{padding:13px 16px;border-top:1px solid #eef2f7;font-size:12.5px;color:#8b98ab;display:flex;justify-content:space-between;gap:12px;background:#fbfcfe}
.ad-page .ad-figcap span+span{color:#8b98ab}
/* 多图缩略条 */
.ad-page .ad-thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;margin:18px 34px 0}
.ad-page .ad-thumbs a{display:block;border:1px solid #eaeff7;border-radius:10px;overflow:hidden;background:#fff;transition:.2s}
.ad-page .ad-thumbs a:hover{border-color:#cfe0f7;box-shadow:0 6px 16px rgba(20,40,80,.08)}
.ad-page .ad-thumbs img{width:100%;height:110px;object-fit:cover;display:block}

/* 正文纯文字（若有） */
.ad-page .ad-text{padding:8px 34px 0;font-size:15px;line-height:2;color:#3d4f6b}
.ad-page .ad-text p{margin:0 0 14px}

/* 上一篇 / 下一篇 */
.ad-page .ad-pn{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:22px 34px 30px}
.ad-page .ad-pn a{display:flex;align-items:center;gap:12px;padding:14px 16px;border:1px solid #eef2f7;border-radius:10px;background:#fff;text-decoration:none;transition:.2s;min-width:0}
.ad-page .ad-pn a:hover{border-color:#cfe0f7;background:#f8fbff}
.ad-page .ad-pn .ar{width:26px;height:26px;border-radius:50%;background:#f2f6fd;color:#023793;display:flex;align-items:center;justify-content:center;font-size:12px;flex:none}
.ad-page .ad-pn .tx{min-width:0}
.ad-page .ad-pn .tx em{display:block;font-style:normal;font-size:11.5px;color:#9aa7bd;letter-spacing:1px}
.ad-page .ad-pn .tx b{display:block;margin-top:4px;font-size:13.5px;color:#1b2a44;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ad-page .ad-pn a.next{justify-content:flex-end;text-align:right}

/* ---------- 侧栏：信息卡 ---------- */
.ad-page .ad-icard{padding:0;overflow:hidden}
.ad-page .ad-icard .t{padding:15px 20px;border-bottom:1px solid #eef2f7;font-size:15px;font-weight:600;color:#17243c;letter-spacing:1px;display:flex;align-items:center;gap:8px}
.ad-page .ad-icard .t i{font-style:normal;color:#f0a800;font-size:13px}
.ad-page .ad-icard .t .no{margin-left:auto;font-size:11.5px;font-weight:400;color:#a6b2c6;letter-spacing:.5px}
.ad-page .ad-icard .key{display:grid;grid-template-columns:1fr 1fr;border-bottom:1px solid #eef2f7}
.ad-page .ad-icard .key div{padding:14px 20px;min-width:0}
.ad-page .ad-icard .key div+div{border-left:1px solid #eef2f7}
.ad-page .ad-icard .key em{display:block;font-style:normal;font-size:11.5px;color:#9aa7bd;letter-spacing:.5px}
.ad-page .ad-icard .key b{display:block;margin-top:6px;font-size:14.5px;color:#1b2a44;font-weight:600;line-height:1.5;word-break:break-all}
.ad-page .ad-icard dl{padding:4px 20px 10px;margin:0}
.ad-page .ad-icard dl div{display:flex;justify-content:space-between;gap:14px;padding:10px 0;border-bottom:1px dashed #eef2f7;font-size:13px}
.ad-page .ad-icard dl div:last-child{border-bottom:0}
.ad-page .ad-icard dt{color:#8b98ab;flex:none;margin:0}
.ad-page .ad-icard dd{color:#1b2a44;font-weight:600;text-align:right;margin:0;min-width:0;word-break:break-all}
.ad-page .ad-icard .tags{display:flex;gap:7px;flex-wrap:wrap;padding:2px 20px 16px}
.ad-page .ad-icard .tags span{font-size:11.5px;color:#023793;background:rgba(2,55,147,.07);border-radius:5px;padding:4px 9px}
.ad-page .ad-icard .bar{padding:0 20px 18px;display:grid;gap:9px}
.ad-page .ad-icard .bar .ad-btn{width:100%;height:42px;font-size:13.5px}

/* 按钮 */
.ad-page .ad-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 26px;border-radius:24px;
  font-size:14.5px;font-weight:600;letter-spacing:.5px;text-decoration:none;border:0;cursor:pointer;transition:.2s}
.ad-page .ad-btn-pri{background:#f7c433;color:#3a2c00}
.ad-page .ad-btn-pri:hover{background:#ffd257}
.ad-page .ad-btn-line{border:1px solid #dfe6f1;color:#3d4f6b;background:#fff}
.ad-page .ad-btn-line:hover{border-color:#023793;color:#023793}
.ad-page .ad-btn-ghost{border:1px solid rgba(255,255,255,.42);color:#fff}
.ad-page .ad-btn-ghost:hover{background:rgba(255,255,255,.1)}

/* CTA 深蓝卡 */
.ad-page .ad-cta{padding:24px 22px 22px;background:#021a40;background-image:linear-gradient(160deg,#021a40,#022a6e 72%,#023793 135%);border-radius:14px;box-shadow:0 8px 22px rgba(2,26,64,.18)}
.ad-page .ad-cta h4{margin:0;color:#fff;font-size:16.5px;font-weight:600;letter-spacing:1px;line-height:1.5}
.ad-page .ad-cta p{color:rgba(255,255,255,.7);font-size:12.5px;line-height:1.8;margin:9px 0 14px}
.ad-page .ad-cta .ad-btn{width:100%;height:42px;font-size:14px}
.ad-page .ad-cta .tel{display:block;text-align:center;margin-top:11px;font-size:14px;color:#fff;letter-spacing:1px;text-decoration:none}
.ad-page .ad-cta .tel small{display:block;font-size:11px;color:rgba(255,255,255,.5);letter-spacing:.5px;margin-bottom:3px}

/* 侧栏其他案例 */
.ad-page .ad-rlist{padding:4px 0 8px}
.ad-page .ad-rlist a.item{display:flex;gap:11px;padding:11px 18px;text-decoration:none;transition:.2s}
.ad-page .ad-rlist a.item:hover{background:#f7faff}
.ad-page .ad-rlist .th{width:74px;height:52px;border-radius:7px;background:#eef2f8 center/cover no-repeat;flex:none}
.ad-page .ad-rlist .tx{min-width:0}
.ad-page .ad-rlist .tx b{display:block;font-size:13px;font-weight:600;color:#1b2a44;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ad-page .ad-rlist .tx span{display:block;margin-top:5px;font-size:11.5px;color:#9aa7bd}
.ad-page .ad-rlist .all{display:block;text-align:center;padding:11px 18px 14px;border-top:1px solid #f3f6fb;font-size:12.5px;color:#8b98ab;text-decoration:none}
.ad-page .ad-rlist .all:hover{color:#023793}

/* ---------- 相关案例 ---------- */
.ad-page .ad-related{margin-top:26px}
.ad-page .ad-st{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:22px}
.ad-page .ad-st h3{margin:0;font-size:22px;font-weight:600;color:#17243c;letter-spacing:2px}
.ad-page .ad-st h3 em{font-style:normal;color:#f0a800;margin-right:9px;font-size:14px;letter-spacing:3px}
.ad-page .ad-st a{font-size:13px;color:#8b98ab;text-decoration:none}
.ad-page .ad-st a:hover{color:#023793}
.ad-page .ad-rel-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:16px}
.ad-page .ad-rel{background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 4px 16px rgba(20,40,80,.06);transition:.22s;text-decoration:none;display:block}
.ad-page .ad-rel:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(20,40,80,.12)}
.ad-page .ad-rel .pic{height:150px;background:#eef2f8 center/cover no-repeat;transition:.3s}
.ad-page .ad-rel:hover .pic{transform:scale(1.03)}
.ad-page .ad-rel .txt{padding:13px 15px 15px}
.ad-page .ad-rel .txt b{display:block;font-size:14.5px;color:#1b2a44}
.ad-page .ad-rel .txt .lb{display:flex;align-items:center;gap:8px;margin-top:7px;font-size:11.5px;color:#9aa7bd}
.ad-page .ad-rel .txt .lb i{font-style:normal;color:#023793;background:rgba(2,55,147,.07);border-radius:4px;padding:2px 6px}

/* ---------- 收尾 CTA ---------- */
.ad-page .ad-close{position:relative;overflow:hidden;padding:56px 0;background:#021a40;background-image:linear-gradient(160deg,#021a40 0%,#022a6e 72%,#023793 135%)}
.ad-page .ad-close .glow{position:absolute;inset:0;background:radial-gradient(ellipse 50% 90% at 84% 10%,rgba(4,80,194,.4),transparent 60%)}
.ad-page .ad-close .ad-wrap{display:flex;align-items:center;justify-content:space-between;gap:40px}
.ad-page .ad-close h3{margin:0;color:#fff;font-size:26px;font-weight:600;letter-spacing:4px;line-height:1.4}
.ad-page .ad-close p{color:rgba(255,255,255,.7);font-size:13.5px;margin:10px 0 0;letter-spacing:.6px}
.ad-page .ad-close .btns{display:flex;gap:14px;flex:none}

/* ---------- Lightbox ---------- */
.ad-lb{position:fixed;inset:0;z-index:99990;background:rgba(8,14,24,.94);display:none;align-items:center;justify-content:center;padding:40px;cursor:zoom-out}
.ad-lb.on{display:flex}
.ad-lb img{max-width:100%;max-height:100%;box-shadow:0 20px 60px rgba(0,0,0,.5);border-radius:6px}
.ad-lb .x{position:absolute;right:24px;top:18px;color:#fff;font-size:30px;line-height:1;opacity:.7}
.ad-lb .x:hover{opacity:1}

/* ---------- 响应式 ---------- */
@media(max-width:1180px){
  .ad-page .ad-side{flex:0 0 330px}
  .ad-page .ad-hd,.ad-page .ad-brief,.ad-page .ad-pn{padding-left:24px;padding-right:24px}
  .ad-page .ad-fig,.ad-page .ad-thumbs{margin-left:24px;margin-right:24px}
  .ad-page .ad-close h3{font-size:23px}
}
@media(max-width:1024px){
  .ad-page .ad-cols{display:block}
  .ad-page .ad-side{position:static;width:auto;margin-top:20px;display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
  .ad-page .ad-side .ad-cta{grid-column:1/-1}
}
@media(max-width:767px){
  .ad-page .ad-banner{padding:32px 0 30px}
  .ad-page .ad-banner h1{font-size:22px;letter-spacing:3px;gap:8px 0;display:block}
  .ad-page .ad-crumbs{display:block;margin-top:8px;white-space:normal}
  .ad-page .ad-body{padding:20px 0 32px}
  .ad-page .ad-side{grid-template-columns:1fr}
  .ad-page .ad-hd,.ad-page .ad-brief,.ad-page .ad-pn{padding-left:16px;padding-right:16px}
  .ad-page .ad-fig,.ad-page .ad-thumbs{margin-left:16px;margin-right:16px}
  .ad-page .ad-hd h2{font-size:20px}
  .ad-page .ad-figbody{max-height:640px}
  .ad-page .ad-pn{grid-template-columns:1fr}
  .ad-page .ad-figtools .cap{display:none}
  .ad-page .ad-close .ad-wrap{display:block;text-align:center}
  .ad-page .ad-close .btns{justify-content:center;margin-top:20px}
  .ad-page .ad-close h3{font-size:20px;letter-spacing:2px}
  .ad-lb{padding:16px}
}