/* 儿童画板 · 简洁浅色版式（深色文字，适合儿童与家长浏览） */
:root{
  --brand:#ff6fb0;
  --brand-soft:#ffe7f2;
  --ink:#2b3440;
  --muted:#7b8798;
  --line:#e8ecf3;
  --bg:#fffafc;
  --card:#ffffff;
}

*{ margin:0; padding:0; box-sizing:border-box; }

html{ -webkit-text-size-adjust:100%; }

body{
  background:var(--bg);
  color:var(--ink);
  font-family:"HarmonyOS Sans SC","Microsoft YaHei UI","PingFang SC","Hiragino Sans GB","Segoe UI",sans-serif;
  line-height:1.7;
  min-height:100vh;
  display:flex;
  flex-direction:column;
}

/* 顶栏 */
.topbar{
  padding:22px 20px 16px;
  text-align:center;
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,#fff 0%,var(--bg) 100%);
}
.site-title{
  font-size:26px;
  font-weight:800;
  letter-spacing:1px;
  display:inline-flex;
  align-items:center;
  gap:9px;
}
.site-title .logo{ font-size:24px; }

/* 主体 */
.wrap{
  flex:1;
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding:26px 20px 48px;
}
.lead{
  text-align:center;
  color:var(--muted);
  font-size:14.5px;
  margin-bottom:24px;
}

/* 作品墙 */
.board{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(240px,1fr));
  gap:20px;
}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:16px;
  overflow:hidden;
  display:flex;
  flex-direction:column;
  box-shadow:0 2px 10px rgba(43,52,64,.05);
}
.card-frame{
  background:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:10px;
  min-height:180px;
}
.card-frame canvas{
  display:block;
  max-width:100%;
  max-height:340px;
  width:auto;
  height:auto;
  border-radius:8px;
  background:#fff;
}
.card-meta{
  border-top:1px solid var(--line);
  padding:11px 14px 13px;
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:10px;
}
.card-title{
  font-size:15px;
  font-weight:700;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.card-sub{
  font-size:12.5px;
  color:var(--muted);
  flex:0 0 auto;
}
.card-index{
  position:absolute;
}

/* 空态 / 错误 */
.empty{ text-align:center; padding:64px 20px; color:var(--muted); }
.empty-face{ font-size:52px; margin-bottom:10px; }
.empty-main{ font-size:19px; font-weight:700; color:var(--ink); }
.empty-sub{ font-size:14px; margin-top:5px; }
.hidden{ display:none; }
.error{
  text-align:center;
  color:#c0392b;
  font-size:14px;
  margin-top:26px;
}

/* 页脚（备案信息，位置与文字不可改动） */
.site-footer{
  border-top:1px solid var(--line);
  padding:20px;
  text-align:center;
  font-size:13px;
  background:#fff;
}
.site-footer a{ color:var(--muted); text-decoration:none; }
.site-footer a:hover{ text-decoration:underline; }

@media (max-width:520px){
  .site-title{ font-size:22px; }
  .board{ grid-template-columns:repeat(auto-fill,minmax(150px,1fr)); gap:14px; }
  .card-frame{ min-height:130px; padding:7px; }
  .card-frame canvas{ max-height:230px; }
  .card-meta{ padding:9px 11px 11px; }
  .card-title{ font-size:13.5px; }
  .card-sub{ font-size:11.5px; }
}