/* ===== 前台样式 · 白底清爽现代风 ===== */
:root {
  --ink: #1a1a1a;
  --ink-2: #55575e;
  --ink-3: #9aa0a8;
  --line: #ececec;
  --bg: #ffffff;
  --soft: #f7f8fa;
  --accent: #07c160;
  --accent-2: #4f46e5;
  --price: #fa5151;
  --radius: 10px;
}
* { margin:0; padding:0; box-sizing:border-box; }
html, body { height:100%; }
body {
  font-family:"PingFang SC","Microsoft YaHei",-apple-system,"Segoe UI",Arial,sans-serif;
  background:var(--bg); color:var(--ink); font-size:14px; line-height:1.6;
  display:flex; flex-direction:column; -webkit-font-smoothing:antialiased;
}
a { text-decoration:none; color:inherit; }
img { max-width:100%; display:block; }
.container { max-width:1080px; margin:0 auto; padding:0 20px; width:100%; }

/* ===== 顶部导航 ===== */
.site-header { background:#fff; border-bottom:1px solid var(--line); position:sticky; top:0; z-index:20; }
.header-inner { display:flex; align-items:center; justify-content:space-between; height:58px; }
.logo { display:flex; align-items:center; gap:10px; }
.logo img { height:28px; width:auto; border-radius:6px; }
.site-name { font-size:17px; font-weight:700; color:var(--ink); }
.site-name em { color:var(--accent); font-style:normal; }
.site-nav a { color:var(--ink-2); margin-left:24px; font-size:14px; transition:color .15s; }
.site-nav a:hover, .site-nav a.on { color:var(--accent); }

/* ===== 主内容（撑满，把页脚顶到底） ===== */
.main-wrap { flex:1 0 auto; padding-top:26px; padding-bottom:40px; }

/* 搜索条 */
.search-row { display:flex; gap:10px; align-items:center; margin-bottom:18px; }
.search-row input[type=text] { flex:1; max-width:380px; padding:10px 14px; border:1px solid var(--line); border-radius:8px; font-size:14px; background:var(--soft); }
.search-row select { padding:10px 12px; border:1px solid var(--line); border-radius:8px; font-size:13px; background:#fff; color:var(--ink-2); }
.search-row .btn { background:var(--accent); color:#fff; border:none; padding:9px 18px; border-radius:8px; cursor:pointer; font-size:14px; white-space:nowrap; }
.search-row .clear { font-size:13px; color:var(--accent-2); }

/* 分类 */
.cat-nav { display:flex; flex-wrap:wrap; gap:8px; margin-bottom:22px; }
.cat-nav a { padding:6px 16px; border-radius:18px; font-size:13px; color:var(--ink-2); background:var(--soft); transition:all .15s; }
.cat-nav a:hover { color:var(--ink); }
.cat-nav a.on { background:var(--ink); color:#fff; }
.cat-nav .sub { width:100%; display:flex; flex-wrap:wrap; gap:6px; align-items:center; font-size:12px; color:var(--ink-3); margin-top:4px; }
.cat-nav .sub a { font-size:12px; padding:4px 12px; background:#fff; border:1px solid var(--line); }
.cat-nav .sub a.on { background:var(--accent); border-color:var(--accent); color:#fff; }
.cat-nav.sub-row { margin-top:-12px; margin-bottom:22px; }
.cat-nav.sub-row a { font-size:12px; padding:4px 12px; background:#fff; border:1px solid var(--line); }
.cat-nav.sub-row a.on { background:var(--accent); border-color:var(--accent); color:#fff; }

.sec-title { font-size:13px; color:var(--ink-3); margin-bottom:14px; }

/* 商品网格 */
.grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(220px,1fr)); gap:18px; }
.pcard { background:#fff; border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; transition:transform .2s, box-shadow .2s; display:block; }
.pcard:hover { transform:translateY(-2px); box-shadow:0 8px 24px rgba(0,0,0,.06); }
.pcard .pic { position:relative; display:block; overflow:hidden; aspect-ratio: 1/1; background:var(--soft); }
.pcard .pic img { width:100%; height:100%; object-fit:cover; transition:transform .4s; }
.pcard:hover .pic img { transform:scale(1.05); }
.pcard .noimg { width:100%; height:100%; display:flex; align-items:center; justify-content:center; color:var(--ink-3); font-size:13px; }
.pcard .badge { position:absolute; top:10px; left:10px; font-size:11px; padding:3px 10px; border-radius:6px; color:#fff; }
.badge.cond-new { background:#16a34a; }
.badge.cond-9 { background:#2563eb; }
.badge.cond-8 { background:#ea580c; }
.badge.cond-7 { background:#9333ea; }
.badge.cond-6 { background:#0891b2; }
.badge.cond-5 { background:#6b7280; }
.badge.cond-other { background:#334155; }
.cond-tag { padding:5px 13px; border-radius:16px; font-size:12px; color:#fff; }
.cond-tag.cond-new { background:#16a34a; }
.cond-tag.cond-9 { background:#2563eb; }
.cond-tag.cond-8 { background:#ea580c; }
.cond-tag.cond-7 { background:#9333ea; }
.cond-tag.cond-6 { background:#0891b2; }
.cond-tag.cond-5 { background:#6b7280; }
.cond-tag.cond-other { background:#334155; }
.pcard .info { padding:12px 14px 14px; }
.pcard .name { font-size:14px; font-weight:500; line-height:1.45; color:var(--ink); display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; min-height:2.9em; }
.pcard .meta { margin-top:6px; font-size:12px; color:var(--ink-3); }
.pcard .price { margin-top:8px; font-size:18px; font-weight:700; color:var(--price); }
.pcard .price small { font-size:12px; font-weight:400; }

/* 空状态 */
.empty { text-align:center; color:var(--ink-3); padding:70px 0; font-size:14px; }

/* 详情页 */
.detail { display:flex; gap:30px; padding:26px 0 40px; flex-wrap:wrap; }
.detail .pic { flex:1 1 380px; background:#fff; border:1px solid var(--line); border-radius:12px; overflow:hidden; }
.detail .pic img { width:100%; }
.detail .pic .noimg { height:360px; display:flex; align-items:center; justify-content:center; color:var(--ink-3); }
.detail .main { flex:1 1 320px; }
.detail h1 { font-size:22px; line-height:1.4; }
.detail .sold { display:inline-block; margin-top:10px; background:#fee2e2; color:#b91c1c; padding:5px 14px; border-radius:20px; font-size:13px; }
.detail .price { font-size:28px; font-weight:700; color:var(--price); margin:16px 0; }
.detail .tags { display:flex; flex-wrap:wrap; gap:8px; margin-bottom:18px; }
.detail .tags span { padding:5px 13px; border-radius:16px; font-size:12px; background:var(--soft); color:var(--ink-2); }
.detail .desc h3 { font-size:14px; margin-bottom:8px; }
.detail .desc p { font-size:14px; line-height:1.9; color:var(--ink-2); white-space:pre-wrap; }

/* 页脚（sticky 到底部） */
.site-footer { flex-shrink:0; background:var(--soft); border-top:1px solid var(--line); color:var(--ink-3); text-align:center; padding:22px 0; font-size:12.5px; }

/* 公告弹窗 */
.announce-mask { position:fixed; inset:0; background:rgba(0,0,0,.5); z-index:99; display:none; align-items:center; justify-content:center; padding:20px; }
.announce-box { background:#fff; border-radius:14px; width:100%; max-width:420px; padding:26px 24px 22px; box-shadow:0 20px 60px rgba(0,0,0,.2); text-align:center; }
.announce-title { font-size:17px; font-weight:700; margin-bottom:14px; color:var(--ink); }
.announce-body { font-size:14px; color:var(--ink-2); line-height:1.8; text-align:left; max-height:50vh; overflow-y:auto; }
.announce-close { display:block; margin:20px auto 0; background:var(--accent); color:#fff; border:none; padding:10px 40px; border-radius:20px; font-size:14px; cursor:pointer; }

/* ===== 移动端（≤768px） ===== */
@media (max-width: 768px) {
  .container { padding:0 20px; }
  .header-inner { height:52px; }
  .site-name { font-size:16px; }
  .site-nav a { margin-left:14px; font-size:13px; }
  .main-wrap { padding-top:22px; padding-bottom:34px; }
  .search-row { flex-wrap:wrap; }
  .search-row input[type=text] { flex:1 1 100%; max-width:none; }
  .search-row select { flex:1 1 auto; }
  .search-row .btn { flex:0 0 auto; }
  .grid { grid-template-columns:repeat(2,1fr); gap:14px; }
  .pcard .info { padding:10px 11px 12px; }
  .pcard .name { font-size:13px; min-height:2.7em; }
  .pcard .price { font-size:16px; }
  .detail { flex-direction:column; gap:16px; padding:16px 0 30px; }
  .detail h1 { font-size:19px; }
  .detail .price { font-size:23px; }
  .detail .pic .noimg { height:220px; }
}