/* ============================================================
   迭代 3 样式：AI 客服 + AI 推荐
   ============================================================ */

/* ---------------- 悬浮客服按钮 ---------------- */
.ai-fab{
  position:fixed;right:24px;bottom:24px;z-index:120;width:58px;height:58px;border-radius:50%;
  background:linear-gradient(140deg,#00548F,#003366);color:#fff;display:grid;place-items:center;
  box-shadow:0 10px 28px rgba(0,51,102,.36);transition:.22s;cursor:pointer;border:0
}
.ai-fab:hover{transform:translateY(-3px) scale(1.04);box-shadow:0 14px 34px rgba(0,51,102,.44)}
.ai-mark{display:block;font-family:Bahnschrift,"Microsoft YaHei",sans-serif;font-weight:800;line-height:1;letter-spacing:.02em}
.ai-fab>.ai-mark{font-size:23px;color:#fff}
.ai-hd .ai-mark{font-size:18px;color:#fff}
.msg .ai-mark{font-size:12px}
.ai-fab .dot{
  position:absolute;top:6px;right:6px;width:11px;height:11px;border-radius:50%;
  background:#4ade80;box-shadow:0 0 0 2.5px #fff;animation:pulse 2s infinite
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.45}}
.ai-fab .lbl{
  position:absolute;right:70px;top:50%;transform:translateY(-50%);white-space:nowrap;
  background:var(--navy);color:#fff;font-size:12.5px;font-weight:700;padding:7px 13px;border-radius:8px;
  opacity:0;pointer-events:none;transition:.2s
}
.ai-fab:hover .lbl{opacity:1}
@media(max-width:640px){.ai-fab{right:16px;bottom:16px;width:52px;height:52px}}

/* ---------------- 客服面板 ---------------- */
.ai-panel{
  position:fixed;right:24px;bottom:94px;z-index:121;width:392px;max-width:calc(100vw - 32px);
  height:600px;max-height:calc(100vh - 130px);background:#fff;border-radius:16px;
  box-shadow:0 24px 60px rgba(16,24,40,.26);display:flex;flex-direction:column;overflow:hidden;
  transform:translateY(14px) scale(.97);opacity:0;pointer-events:none;transition:.24s cubic-bezier(.2,.7,.3,1)
}
.ai-panel.on{transform:none;opacity:1;pointer-events:auto}
@media(max-width:640px){
  .ai-panel{right:0;left:0;bottom:0;width:100%;max-width:100%;height:82vh;border-radius:18px 18px 0 0}
}
.ai-hd{
  background:linear-gradient(140deg,#002952,#003366 55%,#00548F);color:#fff;
  padding:15px 18px;display:flex;align-items:center;gap:12px;flex:0 0 auto
}
.ai-hd .av{width:40px;height:40px;border-radius:12px;background:rgba(255,255,255,.16);display:grid;place-items:center;flex:0 0 auto}
.ai-hd .tt{flex:1;min-width:0}
.ai-hd b{font-size:15px;display:block}
.ai-hd small{font-size:11.5px;color:#A9C6DF;display:flex;align-items:center;gap:5px;margin-top:2px}
.ai-hd small i{width:6px;height:6px;border-radius:50%;background:#4ade80;display:inline-block}
.ai-hd .x{width:32px;height:32px;border-radius:9px;display:grid;place-items:center;color:#C7DCF0}
.ai-hd .x:hover{background:rgba(255,255,255,.14);color:#fff}

.ai-body{flex:1;overflow-y:auto;padding:18px;background:#F7F9FC;display:flex;flex-direction:column;gap:13px}
.ai-body::-webkit-scrollbar{width:6px}
.ai-body::-webkit-scrollbar-thumb{background:#D8E0E9;border-radius:3px}

.msg{display:flex;gap:9px;max-width:88%}
.msg.me{align-self:flex-end;flex-direction:row-reverse}
.msg .av{width:30px;height:30px;border-radius:9px;flex:0 0 auto;display:grid;place-items:center;
  background:var(--pale2);color:var(--navy)}
.msg.me .av{background:var(--navy);color:#fff}
.bub{
  background:#fff;border:1px solid var(--line);border-radius:13px;padding:11px 14px;font-size:13.5px;
  line-height:1.62;box-shadow:0 1px 2px rgba(16,24,40,.04);word-break:break-word
}
.msg.me .bub{background:var(--navy);color:#fff;border-color:var(--navy);border-bottom-right-radius:5px}
.msg.ai .bub{border-bottom-left-radius:5px}
.bub .meta{font-size:10.5px;color:var(--grey);margin-top:7px;display:flex;align-items:center;gap:7px}
.msg.me .bub .meta{color:rgba(255,255,255,.6)}
.bub .meta .pill{background:var(--pale2);color:var(--navy);padding:1px 7px;border-radius:20px;font-weight:700}
.bub .acts{display:flex;flex-wrap:wrap;gap:7px;margin-top:11px}
.bub .acts a,.bub .acts button{
  font-size:12.5px;padding:6px 12px;border-radius:8px;border:1.5px solid var(--navy);color:var(--navy);
  background:#fff;font-weight:700;transition:.14s;text-decoration:none
}
.bub .acts a:hover,.bub .acts button:hover{background:var(--navy);color:#fff}
.bub .handoff{margin-top:10px;padding:9px 12px;background:var(--goldL);border-radius:8px;
  font-size:12.5px;color:#7A5A12;border-left:3px solid var(--gold)}

.typing{display:flex;gap:4px;padding:4px 0}
.typing i{width:7px;height:7px;border-radius:50%;background:#B8C4D2;animation:bounce 1.2s infinite}
.typing i:nth-child(2){animation-delay:.15s}
.typing i:nth-child(3){animation-delay:.3s}
@keyframes bounce{0%,60%,100%{transform:none;opacity:.5}30%{transform:translateY(-5px);opacity:1}}

.ai-quick{padding:11px 16px;background:#fff;border-top:1px solid var(--line);display:flex;gap:7px;
  overflow-x:auto;flex:0 0 auto;scrollbar-width:none}
.ai-quick::-webkit-scrollbar{display:none}
.ai-quick button{
  white-space:nowrap;font-size:12.5px;padding:7px 13px;border-radius:20px;border:1px solid var(--line);
  color:var(--ink2);background:#fff;transition:.14s
}
.ai-quick button:hover{border-color:var(--navy);color:var(--navy);background:var(--pale2)}

.ai-in{padding:12px 16px 16px;background:#fff;border-top:1px solid var(--line);display:flex;gap:9px;flex:0 0 auto}
.ai-in textarea{
  flex:1;resize:none;border:1px solid var(--line);border-radius:11px;padding:11px 13px;font-size:13.5px;
  outline:0;max-height:96px;line-height:1.5;font-family:inherit
}
.ai-in textarea:focus{border-color:var(--navy);box-shadow:0 0 0 3px var(--pale2)}
.ai-in button{
  width:44px;height:44px;border-radius:11px;background:var(--navy);color:#fff;display:grid;place-items:center;
  flex:0 0 auto;transition:.15s;align-self:flex-end
}
.ai-in button:hover{background:var(--navy2)}
.ai-in button:disabled{opacity:.4;cursor:not-allowed}

/* ---------------- 推荐位 ---------------- */
.rec-block{margin:0 0 22px}
.rec-head{display:flex;align-items:center;gap:10px;margin-bottom:13px}
.rec-head h4{font-size:15px;color:var(--navy);font-weight:700}
.rec-head .why{font-size:11.5px;color:var(--grey);font-weight:400}
.rec-head .ai-chip{
  font-size:10.5px;font-weight:700;padding:2.5px 9px;border-radius:20px;
  background:linear-gradient(135deg,#E8F1FA,#D6E6F6);color:var(--navy);display:inline-flex;
  align-items:center;gap:4px
}
.rec-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media(max-width:900px){.rec-row{grid-template-columns:repeat(2,1fr);gap:13px}}
@media(max-width:600px){.rec-row{grid-template-columns:minmax(0,1fr)}}
.rec-mini{
  display:flex;gap:12px;align-items:center;background:#fff;border:1px solid var(--line);
  border-radius:11px;padding:11px;box-shadow:var(--sh);transition:.18s
}
.rec-mini:hover{border-color:var(--lblue);transform:translateY(-2px);box-shadow:var(--sh2)}
.rec-mini .th{width:62px;height:62px;border-radius:9px;overflow:hidden;flex:0 0 auto;background:#EFF3F8}
.rec-mini .th img{width:100%;height:100%;object-fit:cover}
.rec-mini .bd{min-width:0;flex:1}
.rec-mini h5{font-size:13px;font-weight:700;color:var(--ink);line-height:1.4;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rec-mini .pr{font-size:13.5px;font-weight:700;color:var(--navy);margin-top:5px}
.rec-mini .pr small{font-size:10.5px;color:var(--grey);font-weight:400}

.rec-reason{
  display:inline-flex;align-items:center;gap:5px;font-size:11px;color:var(--green);
  background:var(--greenL);padding:2.5px 9px;border-radius:20px;font-weight:700;margin-top:5px
}

/* 首页 AI 推荐横排（大卡） */
.rec-hero{
  background:linear-gradient(150deg,#F2F7FC,#E4EFF9);border:1px solid #D5E4F2;border-radius:16px;
  padding:22px;margin-bottom:20px
}
.rec-hero .top{display:flex;align-items:center;gap:11px;margin-bottom:16px;flex-wrap:wrap}
.rec-hero .top h3{font-size:17px;color:var(--navy);font-weight:700}
.rec-hero .top .sub{font-size:12.5px;color:var(--ink2)}
.rec-hero .top .refresh{
  margin-left:auto;font-size:12.5px;color:var(--blue);font-weight:700;display:flex;align-items:center;gap:5px
}
.rec-hero .rec-row{grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:600px){
  .rec-hero{padding:16px}
  .rec-hero .rec-row{gap:10px}
  .rec-hero .rec-mini{flex-direction:column;align-items:flex-start;gap:9px;padding:10px;min-width:0}
  .rec-hero .rec-mini .th{width:100%;height:auto;aspect-ratio:1.25}
  .rec-hero .rec-mini .bd{width:100%}
  .rec-hero .rec-mini .pr small{display:block;margin-top:3px}
}

/* 商品详情「常一起买」 */
.ab-block{background:#fff;border:1px solid var(--line);border-radius:13px;padding:18px;margin-top:20px;box-shadow:var(--sh)}
.ab-block .h{display:flex;align-items:center;gap:9px;margin-bottom:14px}
.ab-block .h b{font-size:14.5px;color:var(--navy)}
.ab-list{display:grid;grid-template-columns:repeat(2,1fr);gap:11px}
@media(max-width:620px){.ab-list{grid-template-columns:1fr}}