/* ===== 小学学习站 · 在线学习页样式 ===== */
:root{
  --bg:#FFF7EC; --panel:#FFFFFF; --primary:#FF8A3D; --primary-d:#F2721B;
  --teal:#1FB6A6; --yellow:#FFC83D; --pink:#FF6B8A; --ink:#3A3530; --muted:#9A9289;
  --line:#F0E6D6; --shadow:0 6px 20px rgba(255,138,61,.15);
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;
}
.topbar{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:12px 18px;
  background:linear-gradient(100deg,var(--primary),var(--yellow));color:#fff;box-shadow:var(--shadow);
}
.logo{font-size:19px;font-weight:800;}
.sub{font-size:13px;opacity:.95;}
.link-back{margin-left:auto;color:#fff;font-size:13px;text-decoration:none;background:rgba(255,255,255,.2);padding:6px 12px;border-radius:12px;}
.wrap{max-width:760px;margin:0 auto;padding:16px;display:flex;flex-direction:column;gap:14px;}
.card{background:var(--panel);border-radius:18px;padding:16px;box-shadow:var(--shadow);}
.screen{}
.hidden{display:none!important;}
.scr-title{margin:0 0 12px;font-size:18px;font-weight:800;}
.hint{font-size:12px;color:var(--muted);margin:10px 0 0;}

/* ===== 按钮：加大+触屏按压反馈 ===== */
.btn{
  border:none;border-radius:14px;padding:12px 20px;font-size:16px;font-weight:700;cursor:pointer;
  background:#F3ECE1;color:var(--ink);transition:.12s;
  min-height:44px; /* 触屏最小点击区 */
  -webkit-tap-highlight-color:transparent;
}
.btn:hover{transform:translateY(-1px);}
.btn:active{transform:scale(0.96);background:#E9DCC6;}
.btn.primary{background:linear-gradient(100deg,var(--primary),var(--primary-d));color:#fff;box-shadow:0 4px 14px rgba(255,138,61,.4);}
.btn.primary:active{background:linear-gradient(100deg,var(--primary-d),var(--primary-d));}
.btn.accent{background:linear-gradient(100deg,var(--teal),#159B8D);color:#fff;box-shadow:0 4px 14px rgba(31,182,166,.4);}
.btn.accent:active{background:#159B8D;}
.btn.ghost{background:transparent;border:2px solid var(--line);}
.btn.ghost:active{background:#FFF3E2;}
.btn.big{padding:16px;font-size:17px;width:100%;min-height:54px;border-radius:16px;}
.btn.sm{padding:8px 14px;font-size:13px;min-height:36px;}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none!important;}

/* 登录/注册 */
.tabs{display:flex;gap:8px;margin-bottom:12px;}
.tab{border:none;background:#FFF3E2;color:var(--ink);padding:8px 16px;border-radius:12px;font-weight:700;cursor:pointer;}
.tab.on{background:var(--primary);color:#fff;}
.fld{display:flex;flex-direction:column;gap:6px;margin-bottom:12px;}
.fld label{font-size:13px;font-weight:700;}
.fld input{width:100%;padding:11px 12px;border:2px solid var(--line);border-radius:12px;font-size:15px;}
.parent-gate{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink);margin:4px 0 12px;}

/* 首页 */
.home-head{display:flex;align-items:center;justify-content:space-between;}
.fam{font-weight:800;font-size:15px;color:var(--primary-d);}
.child-switch{display:flex;gap:8px;flex-wrap:wrap;}
.child-chip{flex:1;min-width:90px;border:2px solid var(--line);background:#FFFDF9;border-radius:14px;padding:10px;text-align:center;cursor:pointer;font-weight:700;}
.child-chip.on{background:var(--primary);border-color:var(--primary);color:#fff;}
.pet-card{display:flex;align-items:center;gap:16px;}
.pet-box{width:120px;height:120px;flex:0 0 120px;display:flex;align-items:center;justify-content:center;background:linear-gradient(160deg,#FFF3E2,#E6F7F4);border-radius:20px;}
.pet-box svg{width:96px;height:96px;}
.pet-info{flex:1;}
.pet-name{font-size:20px;font-weight:800;}
.pet-stage{font-size:13px;color:var(--teal);font-weight:700;margin:2px 0 8px;}
.points-row{display:flex;align-items:baseline;gap:8px;}
.points-label{font-size:13px;color:var(--muted);}
.points-num{font-size:30px;font-weight:800;color:var(--primary-d);}
.home-btns{display:flex;flex-direction:column;gap:10px;}

/* 选择块 */
.sel-block{display:flex;flex-direction:column;gap:8px;margin-bottom:12px;}
.sel-block.inline{flex-direction:row;align-items:center;gap:10px;flex-wrap:wrap;}
.sel-label{font-size:13px;font-weight:700;}
.chips{display:flex;flex-wrap:wrap;gap:8px;}
.chip{
  border:2px solid var(--line);background:#FFFDF9;color:var(--ink);
  padding:10px 16px;border-radius:14px;font-size:15px;cursor:pointer;
  transition:.12s;font-weight:600;min-height:42px;
  -webkit-tap-highlight-color:transparent;
  user-select:none;
}
.chip:hover{border-color:var(--primary);transform:translateY(-1px);}
.chip:active{transform:scale(0.92);background:#FFF3E2;border-color:var(--primary);}
.chip.on{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 3px 10px rgba(255,138,61,.35);transform:scale(1.02);}
.chip.on:active{background:var(--primary-d);transform:scale(0.97);}
.chip.dis{opacity:.4;cursor:not-allowed;text-decoration:line-through;}
#qUnits{max-height:280px;overflow:auto;-webkit-overflow-scrolling:touch;}
.unit{border:2px solid var(--line);border-radius:14px;margin-bottom:8px;overflow:hidden;background:#FFFDF9;}
.unit-head{display:flex;align-items:center;gap:8px;padding:10px 12px;cursor:pointer;background:linear-gradient(90deg,#FFF3E2,#FFFDF9);font-weight:700;font-size:14px;min-height:42px;}
.unit-head .all{margin-left:auto;font-size:12px;color:var(--teal);font-weight:600;}
#qCount{width:84px;padding:10px;border:2px solid var(--line);border-radius:12px;font-size:16px;font-weight:700;text-align:center;min-height:44px;}

/* 答题：键盘/手写切换 + 手写板 */
.ans-mode{display:flex;gap:8px;margin:10px 0;}
.mode-btn{
  flex:1;border:2px solid var(--line);background:#FFFDF9;border-radius:14px;
  padding:10px;font-size:15px;font-weight:700;color:var(--ink);cursor:pointer;transition:.12s;
  min-height:44px;-webkit-tap-highlight-color:transparent;
}
.mode-btn.on{background:var(--primary);border-color:var(--primary);color:#fff;}
.mode-btn:active{transform:scale(.97);}
#qCanvas{
  width:100%;height:auto;border:2px dashed #FFC857;border-radius:14px;
  background:#FFFDF9;touch-action:none;display:block;cursor:crosshair;
}
.write-tools{display:flex;align-items:center;gap:10px;margin-top:8px;}
.write-tools .btn{flex:0 0 auto;}
.write-status{flex:1;font-size:13px;color:var(--muted);text-align:center;}
.write-status.working{color:var(--primary-d);font-weight:700;}
.w-retry{display:flex;align-items:center;gap:10px;justify-content:center;margin-top:10px;padding:10px;background:#FFF5F5;border-radius:12px;}
.retry-tip{font-size:13px;color:#C0392B;}
#qCanvas{display:block;width:100%;height:auto;border:2px dashed var(--primary);border-radius:14px;background:#FFFFFF;touch-action:none;}
.write-nums{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px;}
.wkey{
  flex:0 0 calc(16.66% - 7px);min-height:46px;border:2px solid var(--line);background:#FFFDF9;
  border-radius:12px;font-size:20px;font-weight:800;color:var(--ink);cursor:pointer;transition:.12s;
  -webkit-tap-highlight-color:transparent;
}
.wkey:active{background:#FFF3E2;border-color:var(--primary);transform:scale(.93);}
.wkey.del{color:#C0392B;background:#FFF5F5;border-color:#FFC9C9;font-size:18px;}
.quiz-progress{display:flex;align-items:center;gap:10px;font-size:14px;font-weight:700;}
.bar{flex:1;height:8px;background:var(--line);border-radius:6px;overflow:hidden;}
.bar i{display:block;height:100%;width:0;background:linear-gradient(100deg,var(--primary),var(--yellow));transition:.2s;}
.q-card{padding:18px;}
.q-stem{font-size:18px;line-height:1.6;margin-bottom:14px;white-space:pre-wrap;}
.q-input{width:100%;padding:12px;border:2px solid var(--line);border-radius:12px;font-size:17px;}
.q-actions{display:flex;justify-content:space-between;margin-top:14px;}
.result-sum{font-size:16px;font-weight:800;margin-bottom:10px;}
.result-list{display:flex;flex-direction:column;gap:8px;margin-bottom:14px;}
.result-item{border:2px solid var(--line);border-radius:12px;padding:10px 12px;font-size:14px;}
.result-item.wrong{border-color:#FFC9C9;background:#FFF5F5;}
.result-item .rq{font-weight:700;}
.result-item .ra{color:var(--teal);}
.result-item .rs{color:var(--primary-d);}
.result-item .ex-btn{margin-top:6px;}

/* 奖励 */
.reward-list{display:flex;flex-direction:column;gap:10px;}
.reward-item{border:2px solid var(--line);border-radius:14px;padding:12px;display:flex;align-items:center;gap:10px;background:#FFFDF9;}
.reward-item .rw-name{font-weight:700;flex:1;}
.reward-item .rw-cost{color:var(--primary-d);font-weight:800;}

/* 弹窗 */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.4);display:flex;align-items:center;justify-content:center;padding:20px;z-index:50;}
.modal-box{max-width:520px;width:100%;}
.explain-text{font-size:15px;line-height:1.7;white-space:pre-wrap;margin:10px 0 14px;background:#FAF6EF;padding:12px;border-radius:12px;}

/* AI 拍照批改 */
.ocr-preview{margin-top:12px;}
.ocr-img{width:100%;border-radius:14px;border:2px solid var(--line);}
.ocr-result{margin-top:14px;display:flex;flex-direction:column;gap:8px;}
.ocr-sum{font-size:20px;font-weight:800;color:var(--ink);text-align:center;padding:8px 0;}
.ocr-sum .ok-num{color:var(--primary-d);font-size:30px;}
.ocr-item{border:2px solid var(--line);border-radius:12px;padding:10px 12px;font-size:14px;background:#FFFDF9;}
.ocr-item.ok{border-color:#BFE8C9;background:#F3FBF4;}
.ocr-item.no{border-color:#FFC9C9;background:#FFF5F5;}
.ocr-q{font-weight:700;margin-bottom:4px;}
.ocr-line{font-size:13px;}
.ocr-note{font-size:12px;color:var(--muted);margin-top:4px;}
.ocr-err{color:#C0392B;background:#FFF5F5;border:1px dashed #FFC9C9;border-radius:12px;padding:12px;line-height:1.7;}
#ocrGo.ready{animation:readyPulse 1.5s ease-in-out infinite;}
@keyframes readyPulse{0%,100%{transform:scale(1);box-shadow:0 0 0 0 rgba(255,138,61,.6);}50%{transform:scale(1.04);box-shadow:0 0 0 10px rgba(255,138,61,0);}}
.ocr-spin{display:inline-block;width:18px;height:18px;border:3px solid #FFC857;border-top-color:transparent;border-radius:50%;animation:spin .8s linear infinite;vertical-align:middle;margin-right:6px;}
@keyframes spin{to{transform:rotate(360deg);}}
/* 拍照学单词：单词卡片 */
.words-list h4{margin:14px 0 8px;color:var(--primary-d);font-size:16px;}
.words-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px;margin-bottom:14px;}
.word-card2{
  background:#FFFDF5;border:2px solid var(--line);border-radius:14px;
  padding:10px 8px;text-align:center;position:relative;cursor:pointer;
  transition:.15s;
}
.word-card2:active{transform:scale(0.96);border-color:var(--primary);background:#FFF3E2;}
.wc-en{font-size:22px;font-weight:800;color:var(--ink);line-height:1.1;}
.wc-py{font-size:12px;color:var(--teal);font-weight:700;margin-top:2px;}
.wc-spk{position:absolute;top:4px;right:4px;border:none;background:transparent;font-size:18px;cursor:pointer;padding:2px 4px;}
/* 宠物喂食 */
.feed-btn{width:100%;margin-top:8px;font-size:14px;}
.feed-info{color:var(--muted);font-size:12px;font-weight:600;}
.pet-box.eat{animation:eatBounce .9s ease;}
@keyframes eatBounce{
  0%,100%{transform:translateY(0) scale(1);}
  30%{transform:translateY(-12px) scale(1.15);}
  60%{transform:translateY(2px) scale(.95);}
  80%{transform:translateY(-5px) scale(1.05);}
}
.pet-box{transition:transform .3s;}
.pet-box:hover{transform:scale(1.06);}

/* ===== 电子课本 · 学习模式 ===== */
#lUnits{max-height:300px;overflow:auto;}
.learn-unit{border:2px solid var(--line);border-radius:14px;margin-bottom:8px;overflow:hidden;background:#FFFDF9;}
.learn-unit .unit-head{display:flex;align-items:center;gap:8px;padding:12px 14px;cursor:pointer;background:linear-gradient(90deg,#FFF3E2,#FFFDF9);font-weight:700;font-size:15px;min-height:48px;}
.learn-unit .unit-head .all{margin-left:auto;font-size:12px;color:var(--teal);}
.learn-detail{margin-top:12px;background:#FFFDF9;border:2px solid #FFE3B3;border-radius:16px;padding:14px;animation:cardIn .3s ease both;}
.learn-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;font-weight:800;font-size:15px;color:var(--primary-d);}
.learn-tip{font-size:12px;color:var(--muted);margin:8px 0 6px;}
.learn-lesson{border-top:1px dashed var(--line);padding:10px 0;}
.ll-title{font-weight:700;font-size:15px;padding:6px 0;cursor:pointer;}
.zi-grid{display:flex;flex-wrap:wrap;gap:8px;}
.zi-card{
  width:64px;padding:8px 4px;text-align:center;border:2px solid var(--line);border-radius:12px;
  background:#FFFDF9;cursor:pointer;transition:.12s;
  -webkit-tap-highlight-color:transparent;
}
.zi-card:active{background:#FFF3E2;transform:scale(.95);border-color:var(--primary);}
.zi-card .zi-char{font-size:26px;font-weight:800;}
.zi-card .zi-py{font-size:12px;color:var(--teal);font-weight:600;}
.learn-words{display:flex;flex-direction:column;gap:8px;}
.word-card{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  border:2px solid var(--line);border-radius:14px;padding:12px 14px;background:#FFFDF9;
  cursor:pointer;transition:.12s;-webkit-tap-highlight-color:transparent;
}
.word-card:active{background:#E8F4FF;border-color:var(--teal);transform:scale(.98);}
.word-en{font-size:20px;font-weight:800;color:var(--ink);}
.word-zh{font-size:15px;color:var(--muted);}
.spk{
  border:none;background:#E0EBFF;color:#3A6BB5;width:32px;height:32px;border-radius:50%;
  cursor:pointer;font-size:14px;margin-left:8px;vertical-align:middle;
}
.spk:active{background:#C9DFFF;transform:scale(.9);}
/* 课文点读 */
.learn-talk{display:flex;flex-direction:column;gap:8px;margin-top:4px;}
.talk-line{
  border:2px solid #CDE8FF;border-radius:14px;padding:10px 14px;background:#F0F8FF;
  cursor:pointer;transition:.12s;-webkit-tap-highlight-color:transparent;
}
.talk-line:active{background:#DDF0FF;border-color:var(--teal);transform:scale(.98);}
.talk-en{font-size:17px;font-weight:700;color:var(--ink);}
.talk-zh{font-size:13px;color:var(--muted);margin-top:2px;}
.learn-links{display:flex;flex-direction:column;gap:8px;margin-top:14px;border-top:2px dashed #FFE3B3;padding-top:12px;}
.link-pill{
  display:block;text-align:center;padding:12px;border-radius:14px;text-decoration:none;
  background:linear-gradient(100deg,#E6F7F4,#D8F5F0);color:var(--teal);font-weight:800;font-size:14px;
}
.link-pill:active{transform:scale(.97);}

/* ===== 翻页电子课本 ===== */
.learn-tabs{display:flex;gap:8px;margin-bottom:12px;}
.learn-tab{flex:1;border:2px solid var(--line);background:#FFFDF9;border-radius:14px;padding:12px;font-size:15px;font-weight:700;color:var(--ink);cursor:pointer;min-height:46px;transition:.12s;}
.learn-tab.on{background:var(--primary);border-color:var(--primary);color:#fff;}
.learn-tab:active{transform:scale(.97);}
.book-sel{margin-bottom:10px;}
.book-shelf{display:flex;flex-wrap:wrap;gap:12px;padding:4px;}
.book-cover{
  width:150px;height:200px;border-radius:8px 14px 14px 8px;color:#fff;
  display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;
  cursor:pointer;box-shadow:0 6px 18px rgba(0,0,0,.25);position:relative;
  transition:.15s;padding:14px;
}
.book-cover::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:10px;
  background:rgba(255,255,255,.15);border-radius:8px 0 0 8px;
}
.book-cover:active{transform:scale(.96);}
/* 真实课本封面卡（官方电子版） */
.book-cover.real{padding:0;overflow:hidden;justify-content:flex-end;}
.book-cover.real .bc-img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  border-radius:8px 14px 14px 8px;
}
.book-cover.real .bc-badge{
  position:relative;z-index:2;background:rgba(255,255,255,.92);color:#1A1A2E;
  font-size:12px;font-weight:900;padding:4px 10px;border-radius:12px;margin-bottom:6px;
}
.book-cover.real .bc-tap{
  position:relative;z-index:2;background:rgba(0,0,0,.55);color:#fff;
  font-size:11px;font-weight:700;padding:4px 10px;border-radius:12px;margin-bottom:8px;
  animation:readyPulse 1.6s ease-in-out infinite;
}
/* 真实课本页面图 */
.real-page{position:relative;height:100%;min-height:340px;display:flex;flex-direction:column;}
.real-page img{
  width:100%;border-radius:8px;box-shadow:0 4px 12px rgba(0,0,0,.18);
  cursor:zoom-in;flex:1;object-fit:contain;background:#fff;
}
.rp-tip{font-size:11px;color:var(--muted);text-align:center;margin-top:6px;}
.real-page{position:relative;}
.rp-toolbar{position:absolute;top:6px;left:6px;display:flex;gap:6px;z-index:5;opacity:.85;}
.rp-toolbar:hover{opacity:1;}
.rp-btn{
  border:none;background:rgba(58,53,48,.78);color:#fff;font-size:12px;font-weight:700;
  padding:5px 9px;border-radius:10px;cursor:pointer;
}
/* 真实课本全屏模式 */
.real-fullscreen{
  position:fixed;inset:0;z-index:3000;background:#1a1a1a;display:flex;flex-direction:column;
  align-items:center;justify-content:center;padding:50px 16px 60px;color:#fff;
}
.rfs-close{position:absolute;top:14px;right:14px;background:rgba(255,255,255,.18);color:#fff;border:none;width:42px;height:42px;border-radius:50%;font-size:20px;cursor:pointer;z-index:10;}
.rfs-prev,.rfs-next{position:absolute;top:50%;transform:translateY(-50%);background:rgba(255,255,255,.15);color:#fff;border:none;width:54px;height:80px;font-size:28px;cursor:pointer;z-index:10;}
.rfs-prev{left:8px;}
.rfs-next{right:8px;}
.rfs-img-wrap{flex:1;width:100%;display:flex;align-items:center;justify-content:center;overflow:hidden;}
.rfs-img-wrap img{max-width:100%;max-height:100%;object-fit:contain;box-shadow:0 6px 20px rgba(0,0,0,.5);background:#fff;}
.rfs-foot{position:absolute;bottom:14px;left:0;right:0;text-align:center;font-size:13px;color:rgba(255,255,255,.7);}
.page-end{
  height:100%;min-height:340px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  border-radius:12px;background:linear-gradient(160deg,#FFF7EC,#FFFDF9);
}
.pe-emoji{font-size:48px;}
.pe-txt{font-size:16px;font-weight:800;color:var(--ink);}
.bc-inner{display:flex;flex-direction:column;align-items:center;gap:6px;}
.bc-emoji{font-size:40px;}
.bc-title{font-size:24px;font-weight:900;letter-spacing:4px;}
.bc-grade{font-size:13px;opacity:.95;background:rgba(255,255,255,.2);padding:3px 10px;border-radius:10px;}
.bc-unit{font-size:11px;opacity:.8;}
.bc-tap{font-size:12px;font-weight:700;margin-top:8px;animation:readyPulse 1.6s ease-in-out infinite;}
.book-mini{
  width:150px;min-height:96px;border:2px solid var(--line);border-radius:12px;background:#FFFDF9;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  cursor:pointer;transition:.12s;padding:10px;text-align:center;
}
.book-mini:active{background:#FFF3E2;transform:scale(.96);border-color:var(--primary);}
.bm-emoji{font-size:28px;}
.bm-name{font-size:13px;font-weight:700;}
/* 缺失的电子课本占位 */
.book-miss{
  width:150px;min-height:200px;border:2px dashed #E6D9C2;border-radius:12px;
  background:#FFFDF5;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:4px;text-align:center;padding:10px;color:#9A9289;
}
.book-miss .bm-emoji{font-size:36px;}
.book-miss .bm-name{font-size:13px;font-weight:700;color:#3A3530;}
.book-miss .bm-tip{font-size:11px;color:#9A9289;line-height:1.5;}
.book-reader{margin-top:10px;}
.reader-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;}
.reader-title{font-weight:800;font-size:16px;color:var(--primary-d);flex:1;text-align:center;margin:0 8px;}
.reader-pages{display:flex;gap:10px;}
.page-left,.page-right{
  flex:1;min-height:340px;background:#FFFDF9;border:2px solid var(--line);border-radius:12px;
  padding:14px;overflow-y:auto;max-height:420px;
}
.page-cover{
  height:100%;min-height:340px;border-radius:8px;color:#fff;
  display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:4px;
}
.page-dir{display:flex;flex-direction:column;gap:8px;}
.pd-title{font-size:20px;font-weight:900;text-align:center;margin-bottom:8px;color:var(--ink);}
.pd-item{
  border:2px solid var(--line);border-radius:12px;padding:10px 12px;font-size:14px;font-weight:700;
  cursor:pointer;background:#FFFDF9;transition:.12s;
}
.pd-item:active{background:#FFF3E2;border-color:var(--primary);}
.pd-tip{font-size:11px;color:var(--muted);text-align:center;margin-top:8px;}
.pg-title{font-size:22px;font-weight:900;color:var(--ink);margin-bottom:4px;}
.pg-title.small{font-size:16px;margin-bottom:10px;}
.pg-sub{font-size:12px;color:var(--muted);margin-bottom:12px;}
.pg-talk{display:flex;flex-direction:column;gap:8px;}
.pg-talk-line{
  border:2px solid #CDE8FF;border-radius:12px;padding:10px 12px;background:#F0F8FF;
  cursor:pointer;transition:.12s;font-size:16px;font-weight:700;
}
.pg-talk-line:active{background:#DDF0FF;transform:scale(.98);}
.pg-zh{font-size:12px;color:var(--muted);font-weight:400;margin-top:2px;}
.pg-words{display:flex;flex-wrap:wrap;gap:8px;}
.pg-word{
  flex:0 0 calc(50% - 4px);border:2px solid var(--line);border-radius:10px;padding:8px 10px;
  cursor:pointer;transition:.12s;background:#FFFDF9;display:flex;flex-direction:column;gap:2px;
}
.pg-word:active{background:#E8F4FF;border-color:var(--teal);transform:scale(.97);}
.pg-en{font-size:16px;font-weight:800;color:var(--ink);}
.pg-zh{font-size:12px;color:var(--muted);}
.pg-zi{display:flex;flex-direction:column;gap:10px;}
.pg-lesson{border-bottom:1px dashed var(--line);padding-bottom:8px;}
.pg-lesson-t{font-size:15px;font-weight:800;color:var(--primary-d);margin-bottom:6px;cursor:pointer;padding:6px 0;}
.pg-z{
  display:inline-block;width:52px;height:52px;line-height:1;text-align:center;
  border:2px solid var(--line);border-radius:10px;margin:3px;padding-top:6px;
  font-size:24px;font-weight:800;cursor:pointer;background:#FFFDF9;transition:.12s;
  -webkit-tap-highlight-color:transparent;
}
.pg-z:active{background:#FFF3E2;border-color:var(--primary);transform:scale(.9);}
.pg-z i{display:block;font-size:10px;font-style:normal;color:var(--teal);font-weight:600;margin-top:2px;}
.reader-nav{display:flex;align-items:center;justify-content:space-between;margin-top:12px;gap:10px;}
.reader-num{font-size:13px;color:var(--muted);font-weight:700;}
.ai-provider{
  padding:12px;border:2px solid var(--line);border-radius:12px;font-size:15px;
  background:#FFFDF9;color:var(--ink);min-height:44px;
}
.grade-row{display:flex;flex-direction:column;gap:6px;padding:10px 0;border-bottom:1px dashed var(--line);}
.grade-row:last-child{border-bottom:none;}
.g-name{font-weight:800;font-size:14px;color:var(--primary-d);}
.imp-json{
  width:100%;min-height:120px;border:2px solid var(--line);border-radius:12px;
  padding:10px;font-size:12px;font-family:monospace;background:#FFFDF9;color:var(--ink);
}

/* 动效 */
.pet-box{animation:petFloat 3s ease-in-out infinite;}
@keyframes petFloat{0%,100%{transform:translateY(0);}50%{transform:translateY(-6px);}}
.card{animation:cardIn .35s ease both;}
@keyframes cardIn{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:none;}}
.btn,.chip,.tab,.child-chip{transition:transform .15s,box-shadow .15s,border-color .15s,background .15s;}
.btn:hover,.chip.on:hover,.tab:hover{transform:translateY(-2px);}
.bar i{transition:width .4s ease;}
.big-num{display:inline-block;animation:pop .5s ease;}
@keyframes pop{0%{transform:scale(.6);}60%{transform:scale(1.12);}100%{transform:scale(1);}}

@media(max-width:560px){
  .pet-card{flex-direction:column;text-align:center;}
  .pet-info{text-align:center;}
  /* ===== 手机端全面加大 + 安全区 ===== */
  body{padding-bottom:env(safe-area-inset-bottom,0);}
  .topbar{padding:14px 16px;gap:10px;}
  .logo{font-size:18px;}
  .sub{font-size:12px;}
  .link-back{padding:8px 12px;font-size:13px;}
  .wrap{padding:12px;gap:12px;}
  .card{padding:18px;border-radius:20px;}
  .scr-title{font-size:20px;margin-bottom:14px;}
  .btn{padding:14px 20px;font-size:16px;min-height:50px;}
  .btn.big{padding:17px;font-size:17px;min-height:60px;border-radius:18px;}
  .btn.sm{padding:10px 14px;font-size:14px;min-height:40px;}
  .chip{padding:12px 18px;font-size:15px;min-height:46px;}
  .field input,.fld input,#qCount,.q-input{padding:14px;font-size:16px;min-height:48px;border-radius:14px;}
  .field input:focus,.q-input:focus{outline:none;border-color:var(--primary);}
  .home-btns{gap:12px;}
  .home-btns .btn.big{padding:18px;font-size:17px;}
  .pet-box{width:100px;height:100px;flex:0 0 100px;}
  .pet-box svg{width:80px;height:80px;}
  .pet-name{font-size:22px;}
  .points-num{font-size:34px;}
  .sel-label{font-size:14px;}
  .unit-chk{padding:14px;font-size:15px;min-height:52px;}
  .unit-chk input{width:22px;height:22px;}
  .unit-head{padding:12px;font-size:15px;min-height:48px;}
  .tabs .tab{padding:10px 18px;font-size:14px;}
  .q-stem{font-size:19px;line-height:1.7;}
  .q-input{font-size:18px;}
  .book-cover{width:130px;height:175px;}
  .book-mini{width:130px;}
  .book-miss{width:130px;min-height:170px;}
  .reader-pages{flex-direction:column;}
  .page-left,.page-right{min-height:200px;max-height:none;}
  .real-page{min-height:200px;}
  .real-page img{max-height:70vh;}
  .pg-word{flex:0 0 calc(33% - 6px);}
  /* OCR 屏按钮全宽更易点 */
  #ocrPick,#ocrGo{flex:1;font-size:16px;padding:14px;min-height:54px;}
  .ocr-preview .ocr-img{border-radius:16px;}
  .ocr-sum{font-size:22px;}
  .ocr-sum .ok-num{font-size:34px;}
  .reward-card,.reward-item{padding:14px;font-size:15px;}
  .modal{padding:14px;}
  .modal-box{width:100%;}
}

/* ===== 补齐：与 learn.js 实际类名对齐 ===== */
.pet-box{font-size:60px;line-height:1;}
.chip.add{background:#EAF7F4;border-color:var(--teal);color:var(--teal);}
.field{margin-bottom:12px;}
.field input{width:100%;padding:11px 12px;border:2px solid var(--line);border-radius:12px;font-size:15px;}
.chk{display:flex;align-items:center;gap:8px;font-size:13px;margin:4px 0 12px;cursor:pointer;}
.unit-chk{
  display:flex;align-items:center;gap:10px;padding:12px 14px;
  border:2px solid var(--line);border-radius:14px;margin-bottom:8px;
  background:#FFFDF9;font-size:15px;cursor:pointer;
  min-height:48px;transition:.15s;
  -webkit-tap-highlight-color:transparent;
}
.unit-chk:active{background:#FFF3E2;transform:scale(0.99);}
.unit-chk.on{background:#FFE9CC;border-color:var(--primary);color:var(--primary-d);font-weight:700;box-shadow:0 2px 8px rgba(255,138,61,.15);}
.unit-chk.on:active{background:#FFD9A8;}
.unit-chk input{width:20px;height:20px;accent-color:var(--primary);}
.res-card{border:2px solid var(--line);border-radius:12px;padding:10px 12px;background:#FFFDF9;margin-bottom:8px;}
.res-card.ok{border-color:#BFE8C9;background:#F3FBF4;}
.res-card.no{border-color:#FFC9C9;background:#FFF5F5;}
.res-stem{font-weight:700;}
.res-ans{font-size:13px;color:var(--muted);margin:4px 0;}
.big-num{font-size:30px;font-weight:800;color:var(--primary-d);}
.res-line{font-size:14px;margin:4px 0;}
.reward-card{display:flex;align-items:center;gap:10px;border:2px solid var(--line);border-radius:14px;padding:12px;background:#FFFDF9;}
.rw-name{font-weight:700;flex:1;}
.rw-cost{color:var(--primary-d);font-weight:800;}
.toast{position:fixed;left:50%;bottom:32px;transform:translateX(-50%) translateY(20px);background:rgba(58,53,48,.95);color:#fff;padding:11px 18px;border-radius:14px;font-size:14px;font-weight:600;opacity:0;transition:.3s;z-index:99;pointer-events:none;max-width:80%;text-align:center;}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}