:root{
  --bg:#f5f6f8; --card:#fff; --text:#1f2329; --muted:#8a8f99;
  --brand:#0f6e56; --brand2:#1d9e75;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text)}
.topbar{position:sticky;top:0;z-index:10;background:#fff;border-bottom:1px solid #eee;padding:12px 16px;display:flex;align-items:center;gap:10px}
.topbar h1{font-size:16px;margin:0;font-weight:600;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.btn{background:var(--brand);color:#fff;border:none;border-radius:8px;padding:8px 14px;font-size:14px;cursor:pointer}
.btn.ghost{background:#eef2f1;color:var(--brand)}
.wall{column-count:2;column-gap:8px;padding:8px}
@media(min-width:768px){.wall{column-count:3}}
@media(min-width:1100px){.wall{column-count:4}}
.card{break-inside:avoid;margin-bottom:8px;background:var(--card);border-radius:10px;overflow:hidden;position:relative}
.card img{width:100%;display:block;cursor:pointer}
.card .meta{display:flex;align-items:center;justify-content:space-between;padding:6px 8px;font-size:12px;color:var(--muted);gap:6px}
.card .who{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.like{display:inline-flex;align-items:center;gap:4px;cursor:pointer;user-select:none;flex-shrink:0}
.empty{padding:60px 20px;text-align:center;color:var(--muted)}
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.9);display:none;align-items:center;justify-content:center;z-index:50}
.lightbox img{max-width:100%;max-height:100%}
.lightbox .close{position:absolute;top:16px;right:16px;color:#fff;font-size:32px;cursor:pointer;line-height:1}
.lb-bar{position:absolute;bottom:20px;left:0;right:0;display:flex;align-items:center;justify-content:center;gap:10px;z-index:55}
.lb-bar .btn{background:#fff;color:#111;font-weight:600}
.lb-bar #enhLoading{font-size:14px}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.5);display:none;align-items:center;justify-content:center;z-index:60}
.modal .box{background:#fff;border-radius:12px;padding:20px;width:320px;max-width:90vw}
.modal input{width:100%;padding:10px;border:1px solid #ddd;border-radius:8px;margin-top:8px;font-size:14px}
.qr{display:block;margin:12px auto;text-align:center}
.field{width:100%;padding:10px;border:1px solid #ddd;border-radius:8px;margin-top:8px;font-size:14px;box-sizing:border-box}