:root{
  --bg:#fff8ec; --card:#fff; --ink:#3b2f2a; --soft:#8a7768; --pri:#ff8a3d; --pri2:#ffb84d;
  --ok:#3bb273; --bad:#e8574d; --blue:#4a90e2; --line:#f0e1cc; --stamp:#d8342c;
  --kai:"BiauKai","DFKai-SB","TW-Kai","Kaiti TC","STKaiti","KaiTi","標楷體","Noto Serif TC","Noto Serif CJK TC",serif;
  --sans:-apple-system,"PingFang TC","Noto Sans TC","Noto Sans CJK TC","Microsoft JhengHei",sans-serif;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px}
body{padding-bottom:env(safe-area-inset-bottom)}
button{font-family:inherit;font-size:inherit;color:inherit;cursor:pointer}
.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:10px 14px;padding-top:calc(10px + env(safe-area-inset-top));background:linear-gradient(90deg,#ffb84d,#ff8a3d);color:#fff;box-shadow:0 2px 8px #0002}
.brand{font-weight:800;font-size:1.15rem;cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.zy-toggle{display:flex;align-items:center;gap:6px;font-weight:700;cursor:pointer;flex:none}
.zy-toggle input{display:none}
.zy-toggle .sw{width:48px;height:28px;border-radius:14px;background:#fff6;position:relative;transition:.2s}
.zy-toggle .sw::after{content:"";position:absolute;left:3px;top:3px;width:22px;height:22px;border-radius:50%;background:#fff;transition:.2s}
.zy-toggle input:checked + .sw{background:#3bb273}
.zy-toggle input:checked + .sw::after{left:23px}
.progress-wrap{max-width:1100px;margin:12px auto 0;padding:0 14px}
.progress-text{font-weight:700}
.progress{height:16px;border-radius:8px;background:#f3e3cb;overflow:hidden;margin:6px 0 2px}
.progress .bar{height:100%;width:0;background:linear-gradient(90deg,#ffd166,#3bb273);border-radius:8px;transition:width .5s}
.link-btn{background:none;border:0;color:var(--pri);font-weight:700;padding:6px 0}
.modes{max-width:1100px;margin:8px auto;padding:0 14px;display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.modes button{border:0;border-radius:16px;background:#fff;padding:10px 4px;font-size:1.6rem;display:flex;flex-direction:column;align-items:center;gap:2px;
  box-shadow:0 2px 0 var(--line);min-height:76px}
.modes button span{font-size:.82rem;font-weight:700;line-height:1.2}
.modes button.active{background:var(--pri);color:#fff;box-shadow:0 3px 0 #d96a22}
.filters{max-width:1100px;margin:0 auto;padding:0 14px}
.chips{display:flex;gap:8px;overflow-x:auto;padding:6px 0;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{flex:none;border:2px solid var(--line);background:#fff;border-radius:999px;padding:8px 14px;font-weight:700;min-height:44px}
.chip.active{background:#4a90e2;border-color:#4a90e2;color:#fff}
.fun summary{cursor:pointer;font-weight:800;padding:8px 2px;color:#a05a16;list-style:none;min-height:40px}
.fun summary::-webkit-details-marker{display:none}
.fun summary::after{content:" ▾"}
.fun[open] summary::after{content:" ▴"}
.filter-note{color:var(--soft);font-size:.9rem;padding:2px 2px 6px}
main{max-width:1100px;margin:0 auto;padding:6px 14px 30px}
.grid{display:grid;grid-template-columns:1fr;gap:14px}
@media (min-width:700px){.grid{grid-template-columns:1fr 1fr}}
@media (min-width:1050px){.grid{grid-template-columns:1fr 1fr 1fr}}
.card{background:var(--card);border-radius:20px;padding:14px 16px 12px;box-shadow:0 3px 0 var(--line),0 6px 18px #c9a46a22;position:relative}
.card.done{box-shadow:0 3px 0 #bfe5cf,0 6px 18px #3bb27322}
.card-head{display:flex;align-items:flex-start;gap:10px}
.num{flex:none;width:36px;height:36px;border-radius:50%;background:var(--pri2);color:#fff;font-weight:800;display:grid;place-items:center}
.ttl{font-family:var(--kai);font-size:1.5rem;font-weight:700;line-height:1.3}
.auth{font-family:var(--kai);color:var(--soft);font-size:1.05rem}
.emoji{margin-left:auto;font-size:2rem;line-height:1}
.stamp-mark{position:absolute;right:12px;top:52px;transform:rotate(-14deg);border:3px solid var(--stamp);color:var(--stamp);border-radius:10px;
  padding:0 6px;font-weight:900;font-size:.9rem;opacity:.85;background:#fff9}
.poem{font-family:var(--kai);font-size:1.75rem;line-height:1.75;text-align:center;margin:10px 0 6px;letter-spacing:.06em}
.poem .ln{display:block;white-space:nowrap}
body.zy .poem{line-height:2.1}
/* 注音: 直排在字的右邊（台灣課本樣式） */
.c{display:inline-flex;align-items:center;vertical-align:middle}
.c .z{display:none}
body.zy .c .z{display:inline-flex;flex-direction:row;align-items:center;font-family:var(--sans);
  font-size:.38em;line-height:1.0;margin-left:.1em;margin-right:.12em;letter-spacing:0;font-weight:500;color:#5a4a40}
body.zy .c .z .col{display:inline-flex;flex-direction:column;align-items:center;min-width:1.05em}
body.zy .c .z .lt{line-height:.7}
body.zy .c .z .t{display:inline-block;width:.6em;font-size:1em;margin-left:-.05em;transform:translateY(.3em)}
body.zy .ttl .c .z,body.zy .auth .c .z{font-size:.42em}
.btns{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
.btn{border:0;border-radius:14px;padding:10px 14px;font-weight:800;background:#fff3e0;color:#a05a16;min-height:46px;box-shadow:0 2px 0 #f0d2a8}
.btn.pri{background:var(--pri);color:#fff;box-shadow:0 3px 0 #d96a22}
.btn.ok{background:var(--ok);color:#fff;box-shadow:0 3px 0 #2a8a57}
.btn.blue{background:var(--blue);color:#fff;box-shadow:0 3px 0 #2f6db3}
.btn.ghost{background:#f4efe8;color:#6b5a4e;box-shadow:0 2px 0 #e0d6c8}
.btn:active{transform:translateY(2px);box-shadow:none}
.story{background:#fffaf2;border:2px dashed #f3d6ab;border-radius:14px;padding:10px 12px;margin-top:10px;line-height:1.7}
.story ul{margin:6px 0 0;padding-left:1.2em;color:#6b5a4e;font-size:.95rem}
.empty{text-align:center;color:var(--soft);padding:40px 10px;font-size:1.1rem}
/* quiz */
.panel{background:#fff;border-radius:22px;padding:16px;box-shadow:0 3px 0 var(--line);max-width:760px;margin:0 auto}
.qhead{display:flex;justify-content:space-between;align-items:center;font-weight:800;color:#a05a16;gap:8px;flex-wrap:wrap}
.score{background:#fff3e0;border-radius:999px;padding:6px 12px}
.qtitle{text-align:center;margin:10px 0 0}
.blank{display:inline-block;min-width:1.15em;border-bottom:4px solid var(--pri);color:var(--pri);border-radius:4px;background:#fff3e0;text-align:center}
.blank.cur{animation:pulse 1s infinite}
.blank.ok{color:var(--ok);border-color:var(--ok);background:#e8f7ef}
.blank.bad{color:var(--bad);border-color:var(--bad);background:#fde9e7}
@keyframes pulse{50%{background:#ffe0b8}}
.choices{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:14px 0 6px}
.choice{font-family:var(--kai);font-size:2rem;border:0;border-radius:16px;background:#f3f7ff;box-shadow:0 3px 0 #cfdcf3;min-height:68px}
.choice.used{opacity:.3}
.choice.right{background:#dff5e8;box-shadow:0 3px 0 #9fd8b8}
.choice.wrong{background:#fde2df;box-shadow:0 3px 0 #f2b0a9}
.feedback{text-align:center;font-weight:800;font-size:1.2rem;min-height:1.6em;margin:6px 0}
.feedback.ok{color:var(--ok)} .feedback.bad{color:var(--bad)}
.row-c{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:8px}
.opt{display:block;width:100%;text-align:left;border:0;border-radius:16px;background:#f3f7ff;box-shadow:0 3px 0 #cfdcf3;padding:14px 16px;margin:10px 0;
  font-family:var(--kai);font-size:1.35rem;min-height:56px}
.opt small{font-family:var(--sans);color:var(--soft);font-size:.85rem;margin-left:6px}
.opt.right{background:#dff5e8;box-shadow:0 3px 0 #9fd8b8}
.opt.wrong{background:#fde2df;box-shadow:0 3px 0 #f2b0a9}
.bigline{font-family:var(--kai);font-size:2rem;text-align:center;background:#fffaf2;border-radius:16px;padding:12px;margin:12px 0;letter-spacing:.08em}
.order-slots{display:flex;flex-direction:column;gap:8px;margin:12px 0}
.slot{min-height:54px;border:3px dashed #f0d2a8;border-radius:14px;display:flex;align-items:center;justify-content:center;font-family:var(--kai);font-size:1.5rem;color:#c9ab86}
.slot.filled{border-style:solid;border-color:#ffd59a;color:var(--ink);background:#fffaf2}
.slot.ok{border-color:var(--ok);background:#e8f7ef} .slot.bad{border-color:var(--bad);background:#fde9e7}
.result{text-align:center;padding:10px}
.result .big{font-size:3.2rem}
/* cover */
.cover-line{display:block;width:100%;border:0;background:none;padding:0;margin:4px 0;position:relative}
.cover-line .mask{position:absolute;inset:2px 8px;border-radius:12px;background:repeating-linear-gradient(45deg,#ffd59a,#ffd59a 12px,#ffc979 12px,#ffc979 24px);
  display:flex;align-items:center;justify-content:center;font-family:var(--sans);font-size:1rem;font-weight:800;color:#8a5a20;transition:opacity .25s}
.cover-line.open .mask{opacity:0;pointer-events:none}
.hint{font-family:var(--kai);opacity:.0}
/* modal */
.modal{position:fixed;inset:0;background:#0006;z-index:50;display:flex;align-items:center;justify-content:center;padding:16px}
.modal[hidden]{display:none}
.modal-card{background:#fff;border-radius:22px;max-width:640px;width:100%;max-height:88vh;overflow:auto;padding:18px;position:relative}
.close{position:absolute;right:10px;top:10px;border:0;background:#f4efe8;border-radius:50%;width:40px;height:40px;font-size:1.1rem}
.stamps{display:grid;grid-template-columns:repeat(auto-fill,minmax(88px,1fr));gap:10px;margin-top:12px}
.stamp{aspect-ratio:1;border-radius:50%;border:3px dashed #e9d6bd;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:.8rem;color:#c2ab90;text-align:center;font-family:var(--kai)}
.stamp b{font-size:1.6rem;line-height:1.1}
.stamp.got{border:3px solid var(--stamp);color:var(--stamp);transform:rotate(-8deg);background:#fff5f4}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#3b2f2a;color:#fff;padding:12px 18px;border-radius:999px;font-weight:700;z-index:60;max-width:90vw;text-align:center}
.foot{text-align:center;color:var(--soft);font-size:.8rem;padding:10px 10px 24px}
@media (max-width:380px){.poem{font-size:1.5rem}.modes button span{font-size:.72rem}.choice{font-size:1.7rem}}
@media (min-width:700px){.poem{font-size:2rem}.bigline{font-size:2.3rem}}
.cover-line:not(.open) .ln{visibility:hidden}
.cover-line .ln{min-height:1.75em}