:root { --bg:#FFF6DD; --ink:#4a3b2a; --pri:#FF8A3D; --pri2:#FFD43B; }
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin:0; height:100%; background:var(--bg); color:var(--ink);
  font-family: "PingFang TC","Noto Sans TC","Microsoft JhengHei",sans-serif;
  touch-action: none; user-select: none; -webkit-user-select: none; overflow:hidden; }
.hidden { display:none !important; }
.screen { position:fixed; inset:0; }

/* 選單 */
#menu { overflow-y:auto; padding:16px; text-align:center; touch-action: pan-y; }
h1, #catTitle { margin:8px 56px; font-size:clamp(1rem,5vw,2.2rem); line-height:1.3; white-space:nowrap; }
h2 { margin:18px 0 8px; font-size:1.2rem; }
.sizes { display:flex; gap:12px; justify-content:center; }
.size-btn { font-size:1.8rem; font-weight:700; width:96px; height:96px; border-radius:24px;
  border:4px solid transparent; background:#fff; color:var(--ink); box-shadow:0 4px 0 #e5d6ad; }
.size-btn small { display:block; font-size:.9rem; font-weight:400; }
.size-btn.on { background:var(--pri2); border-color:var(--pri); }
.gallery { display:grid; grid-template-columns:repeat(auto-fill,minmax(130px,1fr)); gap:12px;
  max-width:760px; margin:0 auto 24px; }
.thumb { border:0; padding:0; background:#fff; border-radius:20px; overflow:hidden;
  box-shadow:0 4px 0 #e5d6ad; font-size:1.1rem; color:var(--ink); }
.thumb img { width:100%; aspect-ratio:1; object-fit:cover; display:block; pointer-events:none; }
.thumb span { display:block; padding:6px 0 8px; font-weight:700; }
.thumb:active, .size-btn:active { transform: translateY(3px); box-shadow:none; }

/* 遊戲 */
:root { --barH: 116px; --titleH: 40px; }
@media (min-width: 720px) { :root { --barH: 64px; } }   /* 寬螢幕：按鈕與片數排同一列 */
.bar { position:absolute; top:0; left:0; right:0; height:var(--barH); display:flex; flex-wrap:wrap; gap:8px 10px;
  align-items:center; justify-content:center; align-content:center; z-index:50; }
.gsizes { display:flex; gap:6px; background:#fff; padding:4px; border-radius:18px; box-shadow:0 3px 0 #e5d6ad; }
.gs { border:0; background:transparent; color:var(--ink); font-size:1.15rem; font-weight:700; height:44px; padding:0 14px; border-radius:14px; }
.gs.on { background:var(--pri2); box-shadow:0 0 0 3px var(--pri) inset; }
.btn { font-size:1.6rem; min-width:52px; height:52px; padding:0 14px; border:0; border-radius:16px;
  background:#fff; box-shadow:0 3px 0 #e5d6ad; color:var(--ink); }
.btn.big { font-size:1.3rem; height:60px; background:var(--pri2); }
.btn:active { transform: translateY(3px); box-shadow:none; }
.stage { position:absolute; left:0; right:0; top:calc(var(--barH) + var(--titleH)); bottom:0; }
.gtitle { position:absolute; left:0; right:0; top:var(--barH); height:var(--titleH); margin:0; display:flex; align-items:center; justify-content:center; font-size:1.5rem; font-weight:800; color:var(--ink); pointer-events:none; }
.board { position:absolute; background:rgba(255,255,255,.55); outline:4px dashed #d6c28a; outline-offset:0;
  border-radius:12px; overflow:hidden; }
.board .ghost { position:absolute; inset:0; opacity:.22; background-repeat:no-repeat; transition:opacity .3s; }
.board.nobase .ghost { opacity:0; }
.board.peek .ghost { opacity:1; }
.board.jig .cell { display:none; }
.board svg.slots { position:absolute; left:0; top:0; width:100%; height:100%; overflow:visible; pointer-events:none; }
.board svg.slots path { fill:rgba(255,255,255,.35); stroke:#c9b27a; stroke-width:2.5; stroke-dasharray:7 5; stroke-linejoin:round; }
.board .cell { position:absolute; border:1px dashed rgba(180,150,80,.45); }

.piece { position:absolute; overflow:visible; cursor:grab; z-index:10; touch-action:none;
  filter: drop-shadow(0 3px 4px rgba(0,0,0,.35));
  transition: left .25s ease, top .25s ease, transform .25s ease, filter .25s; }
.piece .edge { stroke:#fff; stroke-width:3; stroke-linejoin:round; pointer-events:fill; }
.piece.drag { transition:none; z-index:100; cursor:grabbing; filter: drop-shadow(0 12px 12px rgba(0,0,0,.4)); }
.piece.done { z-index:5; filter:none; cursor:default; pointer-events:none; }
.piece.done .edge { stroke:rgba(255,255,255,.55); stroke-width:1.5; }
.piece.pop { animation: pop .35s ease; }
@keyframes pop { 50% { filter:brightness(1.35); } }

/* 完成 */
.win { position:fixed; inset:0; z-index:200; background:rgba(255,246,221,.92); display:flex;
  align-items:center; justify-content:center; touch-action:auto; }
.win-card { text-align:center; padding:16px; }
.win-title { font-size:2.4rem; font-weight:800; margin-bottom:10px; animation: bounce 1s infinite; }
.win-pic { width:min(70vw,50vh); aspect-ratio:1; margin:0 auto 16px; border-radius:20px;
  background-size:cover; background-position:center; box-shadow:0 8px 24px rgba(0,0,0,.25); }
.win-actions { display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }
@keyframes bounce { 50% { transform:translateY(-10px); } }
.confetti { position:fixed; top:-30px; font-size:2rem; z-index:300; pointer-events:none;
  animation: fall linear forwards; }
@keyframes fall { to { transform: translateY(110vh) rotate(540deg); } }

/* 首頁 / 設定 / 選片數 */
.gear { position:fixed; top:10px; right:10px; width:56px; height:56px; border:0; border-radius:50%;
  background:#fff; font-size:1.8rem; box-shadow:0 3px 0 #e5d6ad; z-index:5; }
.gear:active { transform: translateY(3px); box-shadow:none; }
.hint { margin:0 0 10px; font-size:1.1rem; opacity:.75; }
.modal { position:fixed; inset:0; z-index:150; background:rgba(60,45,20,.45); display:flex;
  align-items:center; justify-content:center; padding:16px; touch-action:auto; }
.modal-card { position:relative; background:var(--bg); border-radius:28px; padding:22px 20px;
  width:min(92vw,420px); max-height:92vh; overflow-y:auto; text-align:center; box-shadow:0 12px 40px rgba(0,0,0,.35); }
.modal-card h2 { margin:0 0 6px; }
.modal-card h3 { margin:14px 0 8px; font-size:1.05rem; }
.modal-card .btn.big { margin-top:18px; }

/* 首頁：類別卡片（固定圖示）。類別再多只會往下延伸 */
.cat-grid { --n:2; display:flex; flex-wrap:wrap; justify-content:center; gap:12px; max-width:860px; margin:0 auto 28px; }
@media (min-width: 720px) { .cat-grid { --n:3; } }
@media (min-width: 1000px) { .cat-grid { --n:4; } }
.cat-card { flex:0 0 calc((100% - (var(--n) - 1) * 12px) / var(--n)); display:flex; flex-direction:column; align-items:center; justify-content:center; gap:2px; min-height:136px;
  background:#fff; color:var(--ink); border:4px solid transparent; border-radius:26px; padding:12px 6px;
  font-family:inherit; box-shadow:0 5px 0 #e5d6ad; }
.cat-card .ico { font-size:3.4rem; line-height:1.15; }
.cat-card .txt { display:flex; flex-direction:column; align-items:center; }
.cat-card .nm { font-size:1.3rem; font-weight:800; }
.cat-card .ct { font-size:.9rem; opacity:.6; }
.cat-card:active { transform: translateY(4px); box-shadow:none; }
.gear.back { right:auto; left:10px; }
#catView #catTitle { min-height:44px; display:flex; align-items:center; justify-content:center; }
#catView .gallery { margin-top:22px; }

/* 首頁頁尾：主題連結與關於／家長須知／隱私權政策（遊戲畫面不顯示） */
.site-foot { max-width:860px; margin:8px auto 40px; padding:16px 8px 0; border-top:3px dashed #e5d6ad; font-size:.85rem; line-height:1.9; opacity:.85; }
.site-foot p { margin:.4em 0; }
.site-foot a { color:#8a4a12; margin:0 6px; white-space:nowrap; }
.noscript-msg { padding:16px; text-align:center; background:#fff; }

/* 廣告位（預設隱藏；啟用後只出現在首頁與類別頁底部，離按鈕與圖片至少 28px，遊戲畫面不放） */
.ad-slot { max-width:728px; margin:32px auto 8px; padding:6px; border-radius:12px; background:rgba(255,255,255,.55); overflow:hidden; text-align:center; }
.ad-slot[hidden] { display:none !important; }
.ad-label { font-size:.7rem; opacity:.55; margin-bottom:2px; }

/* 設定裡的安裝／離線區 */
.btn.wide { display:block; width:100%; margin:6px 0; font-size:1.05rem; height:auto; min-height:52px; padding:10px 14px; }
.btn:disabled { opacity:.6; }
.tip { margin:6px 0 2px; font-size:.9rem; line-height:1.6; opacity:.8; }

/* 每個畫面的右上角：首頁是 ⚙️ 設定，其他畫面一律是 🏠 回首頁 */
.bar .homeg { position:absolute; right:10px; top:2px; }
.win .homew { position:absolute; top:12px; right:12px; width:56px; height:56px; padding:0; border-radius:50%; z-index:2; }
@media (min-width: 720px) { .bar .homeg { top:6px; } }
/* 窄螢幕：把拼圖畫面上方按鈕縮小一點，才不會和右上角的 🏠 重疊 */
@media (max-width: 420px) {
  .bar { gap:8px 6px; }
  .bar .btn { min-width:46px; height:46px; padding:0 8px; font-size:1.4rem; }
}
/* 類別頁標題兩側各留出按鈕的位置 */
#catView #catTitle { margin-left:66px; margin-right:66px; }

/* 按鈕列右側預留 🏠 的位置，內容在剩下的空間排版，不會蓋到它 */
.bar { padding-right:76px; }

/* 「最新圖片」橫幅：柔和的奶油黃底、白色圖示方塊、NEW 標籤與箭頭（不再用刺眼的橘黃漸層＋粗框） */
.cat-card.new { flex-basis:100%; flex-direction:row; justify-content:flex-start; gap:14px; min-height:92px; padding:12px 18px; text-align:left;
  position:relative; overflow:hidden; border:3px solid #FFD966; box-shadow:0 5px 0 #EBCB6B;
  background:
    radial-gradient(circle at 93% 18%, rgba(255,255,255,.85) 0 16px, transparent 17px),
    radial-gradient(circle at 84% 82%, rgba(255,255,255,.55) 0 11px, transparent 12px),
    linear-gradient(135deg, #FFF8DC 0%, #FFEDAE 100%); }
.cat-card.new .ico { flex:0 0 auto; width:60px; height:60px; display:flex; align-items:center; justify-content:center;
  font-size:2.1rem; line-height:1; background:#fff; border-radius:18px; box-shadow:0 3px 0 rgba(0,0,0,.08); }
.cat-card.new .txt { align-items:flex-start; min-width:0; }
.cat-card.new .nm { font-size:1.35rem; }
.cat-card.new .ct { font-size:.85rem; opacity:.72; }
.cat-card .pill { font-style:normal; font-size:.62rem; font-weight:800; letter-spacing:.06em; color:#fff; background:#FF7A2F;
  padding:2px 8px; border-radius:999px; vertical-align:middle; margin-left:8px; position:relative; top:-2px; }
.cat-card .go { margin-left:auto; padding-right:2px; font-size:2.2rem; font-weight:800; line-height:1; opacity:.4; }

.site-intro { max-width:860px; margin:20px auto 0; padding:0 12px; font-size:.95rem; line-height:1.9; }
.site-intro h2 { font-size:1.1rem; margin:.4em 0; }
.site-intro p { margin:.5em 0; }
.site-intro a { color:#8a4a12; }
.site-intro .popular a { margin:0 6px; white-space:nowrap; }

/* 橫幅廣告：只用水平橫幅，事先預留高度避免畫面跳動；沒有廣告填入時整個收起 */
.ad-slot ins.adsbygoogle { display:block; width:100%; min-height:90px; max-height:120px; overflow:hidden; }
.ad-slot ins.adsbygoogle[data-ad-status="unfilled"] { display:none; }
.ad-slot:has(ins.adsbygoogle[data-ad-status="unfilled"]) { display:none; }