/* ===== 宝贝学习乐园 · 彩虹糖果色主题 ===== */
:root{
  --pink:#FF8FB1; --pink-l:#FFE1EC; --pink-d:#E8558B;
  --blue:#7FC8F8; --blue-l:#DDF1FF; --blue-d:#3B96D6;
  --yellow:#FFD66B; --yellow-l:#FFF4D6; --yellow-d:#E0A81F;
  --green:#8EDC9C; --green-l:#DEFAE4; --green-d:#46B45F;
  --purple:#C9A7F5; --purple-l:#EFE4FF; --purple-d:#8E63D2;
  --orange:#FFA96B; --orange-l:#FFEADB;

  --bg:#FFF9FB;
  --card:#FFFFFF;
  --ink:#3D3355;
  --ink-2:#7A6E93;
  --line:#F0E6F2;
  --shadow:0 6px 18px rgba(160,120,180,.14);
  --shadow-hi:0 10px 26px rgba(160,120,180,.24);
  --r-lg:26px; --r-md:20px; --r-sm:14px;
  --tap:48px;
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
html,body{margin:0;padding:0;}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:
    radial-gradient(circle at 8% 4%, #FFE1EC 0%, transparent 34%),
    radial-gradient(circle at 92% 8%, #DDF1FF 0%, transparent 34%),
    radial-gradient(circle at 80% 92%, #EFE4FF 0%, transparent 36%),
    radial-gradient(circle at 14% 88%, #DEFAE4 0%, transparent 36%),
    var(--bg);
  background-attachment:fixed;
  color:var(--ink);
  min-height:100vh;
  overflow-x:hidden;
}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
.hidden{display:none !important;}

/* ===== 顶部栏 ===== */
.topbar{
  position:sticky; top:0; z-index:50;
  display:flex; align-items:center; justify-content:space-between;
  gap:12px; padding:10px 18px;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);
  border-bottom:3px solid var(--line);
}
.topbar-brand{display:flex;align-items:center;gap:8px;}
.brand-icon{font-size:28px;animation:bounce 2.4s ease-in-out infinite;display:inline-block;}
.brand-text{
  font-size:22px; font-weight:900; letter-spacing:1px;
  background:linear-gradient(90deg,var(--pink-d),var(--purple-d),var(--blue-d),var(--green-d));
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.topbar-stats{display:flex;align-items:center;gap:8px;}
.stat-chip{
  display:flex;align-items:center;gap:5px;
  min-height:44px; padding:6px 14px; border-radius:999px;
  font-weight:800; font-size:17px;
  box-shadow:var(--shadow);
}
.stat-star{background:linear-gradient(135deg,var(--yellow-l),#FFE9A8);color:#B87A00;border:2px solid #FFDF8A;}
.stat-badge{background:linear-gradient(135deg,var(--purple-l),#EAD9FF);color:var(--purple-d);border:2px solid #DCC6F7;}
.chip-icon{font-size:18px;}
.btn-icon{
  min-width:var(--tap); min-height:var(--tap);
  border-radius:50%; font-size:22px;
  background:var(--blue-l); border:2px solid #CDE9FB;
  display:grid;place-items:center;
  box-shadow:var(--shadow);
  transition:transform .15s;
}
.btn-icon:active{transform:scale(.9);}
.btn-icon.muted{background:#F2EEF6;border-color:#E5DDEC;opacity:.6;}

/* ===== 布局 ===== */
.layout{display:flex; min-height:calc(100vh - 74px);}
.sidebar{
  width:180px; flex:0 0 180px;
  padding:16px 12px; display:flex; flex-direction:column; gap:10px;
  position:sticky; top:74px; align-self:flex-start;
  height:calc(100vh - 74px); overflow-y:auto;
}
.nav-item{
  display:flex; align-items:center; gap:12px;
  min-height:var(--tap); padding:10px 16px;
  border-radius:var(--r-md);
  font-size:17px; font-weight:800; color:var(--ink-2);
  background:var(--card); border:3px solid transparent;
  box-shadow:var(--shadow);
  transition:transform .16s, box-shadow .16s, border-color .16s;
}
.nav-item .nav-emoji{font-size:24px;}
.nav-item:hover{transform:translateX(4px);box-shadow:var(--shadow-hi);}
.nav-item:active{transform:scale(.96);}
.nav-item.active{
  color:#fff; border-color:rgba(255,255,255,.6);
  background:linear-gradient(135deg,var(--pink),var(--purple));
  box-shadow:0 8px 20px rgba(201,167,245,.44);
}
.nav-item:nth-child(1).active{background:linear-gradient(135deg,#FF8FB1,#FFB4C8);}
.nav-item:nth-child(2).active{background:linear-gradient(135deg,#FFA9C9,#C9A7F5);}
.nav-item:nth-child(3).active{background:linear-gradient(135deg,#7FC8F8,#8EDC9C);}
.nav-item:nth-child(4).active{background:linear-gradient(135deg,#FFD66B,#FFA96B);}
.nav-item:nth-child(5).active{background:linear-gradient(135deg,#C9A7F5,#7FC8F8);}

.content{flex:1; padding:22px 26px 40px; min-width:0; max-width:1180px;}

/* 移动底部 Tab */
@media (max-width:820px){
  .layout{flex-direction:column; min-height:auto;}
  .sidebar{
    position:fixed; left:0; right:0; bottom:0; top:auto;
    width:100%; flex:none; height:auto;
    flex-direction:row; justify-content:space-around; align-items:stretch;
    gap:2px; padding:6px 4px calc(6px + env(safe-area-inset-bottom));
    background:rgba(255,255,255,.95);
    backdrop-filter:blur(14px);
    border-top:3px solid var(--line);
    box-shadow:0 -6px 20px rgba(160,120,180,.16);
    z-index:60;
  }
  .nav-item{
    flex:1; flex-direction:column; gap:2px;
    min-height:56px; padding:6px 2px;
    font-size:11px; border:2px solid transparent; box-shadow:none;
    background:transparent; border-radius:var(--r-sm);
  }
  .nav-item .nav-emoji{font-size:22px;}
  .nav-item:hover{transform:none;}
  .nav-item.active{box-shadow:none; border-color:transparent; background:transparent; color:var(--pink-d);}
  .nav-item:nth-child(1).active,.nav-item:nth-child(2).active,.nav-item:nth-child(3).active,
  .nav-item:nth-child(4).active,.nav-item:nth-child(5).active{background:transparent;}
  .nav-item.active::before{
    content:""; position:absolute; top:0; left:50%; transform:translateX(-50%);
    width:60%; height:4px; border-radius:0 0 6px 6px; background:var(--pink);
  }
  .nav-item{position:relative;}
  .content{padding:16px 14px calc(96px + env(safe-area-inset-bottom));}
  .brand-text{font-size:19px;}
  .stat-chip{padding:6px 10px;font-size:15px;min-height:42px;}
  .topbar{padding:8px 12px;}
}

/* ===== 通用页面头部 ===== */
.page-head{
  display:flex; align-items:center; gap:12px; flex-wrap:wrap;
  margin-bottom:18px;
}
.page-title{font-size:26px; font-weight:900; margin:0;}
.page-sub{font-size:14px; color:var(--ink-2); margin:2px 0 0;}
.pill{
  display:inline-flex; align-items:center; gap:6px;
  padding:6px 14px; border-radius:999px; font-size:14px; font-weight:800;
  background:var(--card); box-shadow:var(--shadow);
}

/* ===== 卡片网格 ===== */
.grid{display:grid; gap:12px;}
.grid-cards{grid-template-columns:repeat(auto-fill,minmax(112px,1fr));}
@media (max-width:820px){ .grid-cards{grid-template-columns:repeat(auto-fill,minmax(94px,1fr)); gap:10px;} }

.letter-card{
  min-height:104px; padding:12px 6px;
  border-radius:var(--r-md); background:var(--card);
  border:3px solid var(--line);
  box-shadow:var(--shadow);
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:2px;
  transition:transform .18s cubic-bezier(.34,1.56,.64,1), box-shadow .18s;
  position:relative; overflow:hidden;
}
.letter-card::after{
  content:""; position:absolute; inset:auto -20% -40% -20%; height:60%;
  background:radial-gradient(ellipse at center,var(--c-l),transparent 70%);
  opacity:.7; pointer-events:none;
}
.letter-card:hover{transform:translateY(-5px) rotate(-1.5deg);box-shadow:var(--shadow-hi);}
.letter-card:active{transform:scale(.93);}
.letter-card.playing{animation:pop .5s;}
.lc-main{font-size:32px; font-weight:900; line-height:1; color:var(--c-d); letter-spacing:-1px;}
.lc-word{font-size:13px; font-weight:700; color:var(--ink-2);}
.lc-emoji{font-size:22px;}
@media (max-width:820px){
  .letter-card{min-height:92px;}
  .lc-main{font-size:27px;} .lc-emoji{font-size:19px;} .lc-word{font-size:11px;}
}

/* ===== 通用按钮 ===== */
.btn{
  min-height:var(--tap); padding:12px 26px;
  border-radius:999px; font-size:17px; font-weight:800;
  background:var(--card); color:var(--ink);
  box-shadow:var(--shadow); border:3px solid var(--line);
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  transition:transform .15s, box-shadow .15s;
}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-hi);}
.btn:active{transform:scale(.95);}
.btn-pink{background:linear-gradient(135deg,var(--pink),#FFB0C9);color:#fff;border-color:#FFC6D8;}
.btn-blue{background:linear-gradient(135deg,var(--blue),#A5DBFF);color:#fff;border-color:#C4E7FF;}
.btn-green{background:linear-gradient(135deg,var(--green),#B5EFBF);color:#fff;border-color:#C6F3CF;}
.btn-yellow{background:linear-gradient(135deg,var(--yellow),#FFE79B);color:#8A5D00;border-color:#FFE7A8;}
.btn-purple{background:linear-gradient(135deg,var(--purple),#DCC6FF);color:#fff;border-color:#E3D2FF;}
.btn-ghost{background:var(--card);}
.btn[disabled]{opacity:.45;pointer-events:none;}

/* ===== 选项按钮 ===== */
.options{display:grid; grid-template-columns:repeat(auto-fit,minmax(120px,1fr)); gap:12px;}
@media (max-width:820px){ .options{grid-template-columns:repeat(2,1fr); gap:10px;} }
.opt{
  min-height:64px; padding:12px;
  border-radius:var(--r-md); font-size:26px; font-weight:900;
  background:var(--card); border:3px solid var(--line);
  box-shadow:var(--shadow);
  display:flex; align-items:center; justify-content:center;
  transition:transform .15s, background .2s, border-color .2s;
  word-break:break-word;
}
.opt:hover{transform:translateY(-3px);}
.opt:active{transform:scale(.95);}
.opt.correct{background:var(--green-l); border-color:var(--green); color:var(--green-d); animation:pop .45s;}
.opt.wrong{background:#FFE1E6; border-color:#FF9FB4; color:#D6335A; animation:shake .4s;}
.opt.dim{opacity:.35;}

/* ===== 题目面板 ===== */
.panel{
  background:var(--card); border-radius:var(--r-lg);
  padding:22px; box-shadow:var(--shadow); border:3px solid var(--line);
  margin-bottom:16px;
}
.panel-tint-pink{background:linear-gradient(160deg,#FFF6FA,#fff 60%);border-color:var(--pink-l);}
.panel-tint-blue{background:linear-gradient(160deg,#F5FBFF,#fff 60%);border-color:var(--blue-l);}
.panel-tint-green{background:linear-gradient(160deg,#F4FEF6,#fff 60%);border-color:var(--green-l);}
.panel-tint-yellow{background:linear-gradient(160deg,#FFFBF0,#fff 60%);border-color:var(--yellow-l);}
.panel-tint-purple{background:linear-gradient(160deg,#FAF6FF,#fff 60%);border-color:var(--purple-l);}

.question{
  font-size:34px; font-weight:900; text-align:center;
  margin:8px 0 18px; line-height:1.3; letter-spacing:1px;
}
.question small{display:block;font-size:15px;font-weight:700;color:var(--ink-2);letter-spacing:0;margin-top:6px;}
@media (max-width:820px){ .question{font-size:27px;} }

.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center;}
.row-center{justify-content:center;}
.spacer{flex:1;}

.feedback{
  text-align:center; font-size:20px; font-weight:900;
  min-height:34px; margin-top:14px;
}
.feedback.ok{color:var(--green-d);}
.feedback.no{color:#D6335A;}

/* ===== 古诗 ===== */
.poem-card{
  background:var(--card); border-radius:var(--r-lg);
  box-shadow:var(--shadow); border:3px solid var(--pink-l);
  margin-bottom:14px; overflow:hidden;
  transition:box-shadow .2s;
}
.poem-card.open{box-shadow:var(--shadow-hi);border-color:var(--pink);}
.poem-head{
  display:flex; align-items:center; gap:12px;
  min-height:var(--tap); padding:14px 18px; width:100%;
  text-align:left;
}
.poem-emoji{font-size:30px;}
.poem-title{font-size:20px;font-weight:900;}
.poem-author{font-size:13px;color:var(--ink-2);font-weight:700;}
.poem-arrow{font-size:18px;color:var(--ink-2);transition:transform .25s;}
.poem-card.open .poem-arrow{transform:rotate(90deg);}
.poem-body{padding:0 18px 18px; border-top:2px dashed var(--line);}
.poem-line{
  display:flex; flex-wrap:wrap; gap:4px; justify-content:center;
  padding:10px 6px; margin:6px 0; border-radius:var(--r-sm);
  cursor:pointer; transition:background .2s; min-height:44px; align-items:flex-end;
}
.poem-line:hover{background:var(--yellow-l);}
.poem-line.speaking{background:var(--blue-l);}
.poem-line rb{font-size:26px;font-weight:800;letter-spacing:2px;}
.poem-line rt{font-size:12px;color:var(--pink-d);font-weight:700;letter-spacing:0;}
@media (max-width:820px){
  .poem-line rb{font-size:22px;letter-spacing:1px;}
  .poem-title{font-size:18px;}
}
ruby{ruby-align:center;}

/* ===== 闯关 ===== */
.lvl-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:12px;}
@media (max-width:820px){.lvl-grid{grid-template-columns:repeat(3,1fr);gap:10px;}}
.lvl-btn{
  aspect-ratio:1/1; min-height:96px;
  border-radius:var(--r-md); background:var(--card);
  border:3px solid var(--line); box-shadow:var(--shadow);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-weight:900; transition:transform .16s;
}
.lvl-btn:active{transform:scale(.93);}
.lvl-btn .lvl-n{font-size:26px;}
.lvl-btn .lvl-stars{font-size:13px;letter-spacing:-1px;height:16px;}
.lvl-btn.done{background:linear-gradient(160deg,var(--yellow-l),#fff);border-color:var(--yellow);}
.lvl-btn.locked{opacity:.5;background:#F6F3F9;}
.lvl-btn.current{border-color:var(--pink);box-shadow:0 8px 20px rgba(255,143,177,.4);animation:glow 1.8s ease-in-out infinite;}

.badge-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(104px,1fr));gap:12px;}
@media (max-width:820px){.badge-grid{grid-template-columns:repeat(3,1fr);gap:10px;}}
.badge{
  padding:14px 8px; border-radius:var(--r-md);
  background:var(--card); border:3px solid var(--line);
  text-align:center; box-shadow:var(--shadow);
}
.badge.got{background:linear-gradient(160deg,var(--purple-l),#fff);border-color:var(--purple);}
.badge .b-emoji{font-size:32px;display:block;filter:grayscale(1);opacity:.35;}
.badge.got .b-emoji{filter:none;opacity:1;}
.badge .b-name{font-size:13px;font-weight:800;margin-top:4px;color:var(--ink-2);}
.badge.got .b-name{color:var(--purple-d);}
.badge .b-desc{font-size:11px;color:var(--ink-2);margin-top:2px;}

/* 进度条 */
.progress{
  height:16px;border-radius:999px;background:#F1ECF5;overflow:hidden;
  border:2px solid var(--line);
}
.progress > i{
  display:block;height:100%;border-radius:999px;
  background:linear-gradient(90deg,var(--pink),var(--yellow),var(--green));
  transition:width .5s cubic-bezier(.34,1.56,.64,1);
}

/* 配对游戏 */
.match-board{display:grid;gap:10px;}
.match-cols{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
@media (max-width:820px){.match-cols{gap:10px;}}
.match-col{display:grid;gap:10px;}
.match-tile{
  min-height:var(--tap); border-radius:var(--r-md);
  background:var(--card); border:3px solid var(--line);
  font-size:28px;font-weight:900; box-shadow:var(--shadow);
  display:flex;align-items:center;justify-content:center;
  transition:transform .16s, background .2s;
}
.match-tile:active{transform:scale(.94);}
.match-tile.sel{background:var(--blue-l);border-color:var(--blue);transform:scale(1.04);}
.match-tile.matched{background:var(--green-l);border-color:var(--green);color:var(--green-d);opacity:.55;pointer-events:none;}
.match-tile.bad{animation:shake .4s;border-color:#FF9FB4;background:#FFE1E6;}
@media (max-width:820px){.match-tile{font-size:24px;}}

/* 数数游戏 */
.count-stage{
  display:flex;flex-wrap:wrap;gap:8px;justify-content:center;
  padding:20px; border-radius:var(--r-md);
  background:var(--blue-l); border:3px dashed var(--blue);
  margin:10px 0 18px; font-size:40px; line-height:1;
}

/* 徽章墙/章节标题 */
.section-title{
  display:flex;align-items:center;gap:8px;
  font-size:19px;font-weight:900;margin:22px 0 12px;
}
.section-title::before{
  content:"";width:8px;height:22px;border-radius:4px;
  background:linear-gradient(180deg,var(--pink),var(--purple));
}

/* ===== 弹窗 ===== */
.modal-mask{
  position:fixed;inset:0;z-index:200;
  background:rgba(61,51,85,.42); backdrop-filter:blur(4px);
  display:flex;align-items:center;justify-content:center;padding:20px;
  animation:fadeIn .22s;
}
.modal-box{
  background:var(--card); border-radius:28px;
  padding:28px 24px; max-width:420px; width:100%;
  box-shadow:0 20px 50px rgba(61,51,85,.32);
  text-align:center; animation:pop .35s cubic-bezier(.34,1.56,.64,1);
  border:4px solid var(--yellow);
  max-height:88vh; overflow-y:auto;
}
.modal-emoji{font-size:60px;display:block;margin-bottom:6px;}
.modal-title{font-size:24px;font-weight:900;margin:0 0 8px;}
.modal-text{font-size:15px;color:var(--ink-2);line-height:1.6;margin:0 0 18px;}
.modal-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;}
.stars-row{font-size:34px;letter-spacing:4px;margin:10px 0;}

/* ===== 特效 ===== */
.fx-layer{position:fixed;inset:0;pointer-events:none;z-index:300;overflow:hidden;}
.fx-star{
  position:absolute;font-size:28px;
  animation:flyUp 1.5s cubic-bezier(.2,.6,.3,1) forwards;
}
@keyframes flyUp{
  0%{transform:translateY(0) scale(.4) rotate(0);opacity:0;}
  20%{opacity:1;transform:translateY(-20px) scale(1.2) rotate(20deg);}
  100%{transform:translateY(-260px) scale(.7) rotate(160deg);opacity:0;}
}
.toast{
  position:fixed; left:50%; bottom:96px; transform:translateX(-50%) translateY(20px);
  background:rgba(61,51,85,.94); color:#fff;
  padding:12px 22px; border-radius:999px; font-size:15px; font-weight:800;
  z-index:400; opacity:0; transition:opacity .25s, transform .25s;
  pointer-events:none; max-width:86vw; text-align:center;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}

@keyframes pop{0%{transform:scale(.85);}55%{transform:scale(1.08);}100%{transform:scale(1);}}
@keyframes shake{0%,100%{transform:translateX(0);}25%{transform:translateX(-8px);}75%{transform:translateX(8px);}}
@keyframes bounce{0%,100%{transform:translateY(0) rotate(0);}50%{transform:translateY(-6px) rotate(-8deg);}}
@keyframes glow{0%,100%{box-shadow:0 8px 18px rgba(255,143,177,.35);}50%{box-shadow:0 10px 28px rgba(255,143,177,.6);}}
@keyframes fadeIn{from{opacity:0;}to{opacity:1;}}
@media (max-width:820px){
  .toast{bottom:calc(84px + env(safe-area-inset-bottom));}
}

/* ===== 拼音模块 ===== */
.blend-stage{
  display:flex; align-items:center; justify-content:center; gap:14px;
  padding:22px 16px; margin:6px 0 20px;
  border-radius:var(--r-lg);
  background:linear-gradient(135deg,var(--blue-l),#F3FBFF);
  border:3px dashed var(--blue);
}
.bs-part{
  font-size:46px; font-weight:900; color:var(--blue-d);
  background:#fff; border-radius:18px; padding:6px 18px;
  min-width:76px; text-align:center;
  box-shadow:0 4px 12px rgba(127,200,248,.3);
}
.bs-plus{font-size:30px; font-weight:900; color:var(--ink-2);}
.bs-hanzi{font-size:64px; font-weight:900; color:var(--purple-d);}
@media (max-width:820px){
  .bs-part{font-size:36px; min-width:62px; padding:6px 14px;}
  .bs-plus{font-size:24px;}
  .bs-hanzi{font-size:52px;}
  .blend-stage{padding:16px 10px; gap:10px;}
}
.opt-sub{
  display:block; font-size:13px; font-weight:800;
  color:var(--ink-2); margin-top:2px; letter-spacing:0;
}

/* ===== 汉字模块 ===== */
.hanzi-card{min-height:118px;}
.hz-char{
  font-size:38px; font-weight:900; line-height:1.1;
  color:var(--c-d); letter-spacing:0;
}
@media (max-width:820px){
  .hanzi-card{min-height:104px;}
  .hz-char{font-size:32px;}
}

/* 6 个 Tab 时移动端更紧凑 */
@media (max-width:820px){
  .nav-item{font-size:10px; padding:6px 1px;}
  .nav-item .nav-emoji{font-size:20px;}
}