/* ============================================================
   宝贝学习乐园 · 彩虹糖果色样式表
   ============================================================ */

:root{
  --pink:#FF7EB6;   --pink-l:#FFE6F2;   --pink-d:#E8568F;
  --blue:#43BFF0;   --blue-l:#E2F5FE;   --blue-d:#1B9BD1;
  --yellow:#FFC12E; --yellow-l:#FFF4D5; --yellow-d:#DFA000;
  --green:#54D18A;  --green-l:#E2F9EC;  --green-d:#2FAE67;
  --purple:#AE8BFF; --purple-l:#F1EAFF; --purple-d:#8659F0;
  --orange:#FF9F5A; --orange-l:#FFEEE0;

  --ink:#3B3355;
  --ink-soft:#7A7296;
  --ink-faint:#A79FBE;
  --line:#F0E9FB;
  --bg:#FFF9F1;
  --card:#FFFFFF;
  --radius:24px;
  --radius-sm:16px;
  --shadow:0 10px 28px rgba(140,120,190,.13);
  --shadow-lg:0 18px 44px rgba(140,120,190,.22);
  --tap:52px;
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
button,.letter-card,.num-card,.opt,.match-card{touch-action:manipulation;}
html,body{margin:0;padding:0;}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  color:var(--ink);
  background:var(--bg);
  background-image:
    radial-gradient(circle at 8% 8%, rgba(255,126,182,.16), transparent 34%),
    radial-gradient(circle at 92% 4%, rgba(67,191,240,.16), transparent 32%),
    radial-gradient(circle at 82% 92%, rgba(174,139,255,.16), transparent 34%),
    radial-gradient(circle at 12% 88%, rgba(84,209,138,.16), transparent 32%);
  background-attachment:fixed;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;color:inherit;}
ul{margin:0;padding:0;list-style:none;}

/* ================= 布局 ================= */
.app{display:flex;align-items:flex-start;max-width:1280px;margin:0 auto;padding:22px;gap:22px;}

/* ---------- 侧边栏 ---------- */
.sidebar{
  width:256px;flex:0 0 256px;
  background:var(--card);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:20px 16px;
  position:sticky;top:22px;
  display:flex;flex-direction:column;gap:16px;
}
.brand{display:flex;align-items:center;gap:12px;padding:4px 6px 12px;border-bottom:2px dashed var(--line);}
.brand-logo{font-size:34px;line-height:1;filter:drop-shadow(0 4px 8px rgba(255,126,182,.35));}
.brand-text h1{font-size:19px;font-weight:900;letter-spacing:.5px;}
.brand-text p{font-size:11.5px;color:var(--ink-faint);margin-top:3px;}

.nav{display:flex;flex-direction:column;gap:8px;}
.nav-item{
  display:flex;align-items:center;gap:12px;
  min-height:56px;padding:10px 12px;border-radius:18px;
  background:transparent;border:2px solid transparent;cursor:pointer;
  transition:transform .15s, background .15s, box-shadow .15s;
  text-align:left;width:100%;
}
.nav-item:active{transform:scale(.97);}
.nav-item .ni-emoji{
  width:40px;height:40px;flex:0 0 40px;border-radius:13px;
  display:grid;place-items:center;font-size:21px;
}
.nav-item .ni-body{min-width:0;}
.nav-item .ni-name{font-size:15px;font-weight:800;white-space:nowrap;}
.nav-item .ni-sub{font-size:10.5px;color:var(--ink-faint);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:140px;margin-top:2px;}
.nav-item:hover{background:var(--pink-l);}
.nav-item.on{box-shadow:var(--shadow);transform:translateX(2px);}
.nav-item.on .ni-name{color:var(--ink);}

/* 侧边星星卡 */
.side-star{
  margin-top:auto;display:flex;gap:12px;align-items:center;
  background:linear-gradient(135deg,#FFF6D9,#FFE7F3);
  border-radius:20px;padding:14px;border:2px dashed #FFD9EA;
}
.side-star-icon{font-size:30px;animation:pulse 2s ease-in-out infinite;}
.side-star-num{font-size:20px;font-weight:900;color:var(--yellow-d);}
.side-star-lbl{font-size:11px;color:var(--ink-soft);margin-top:1px;}
.side-star-bar{height:7px;border-radius:99px;background:#fff;margin-top:7px;overflow:hidden;}
.side-star-bar i{display:block;height:100%;width:0;border-radius:99px;background:linear-gradient(90deg,var(--yellow),var(--orange));transition:width .5s;}
.side-star-sub{font-size:10px;color:var(--ink-faint);margin-top:6px;line-height:1.4;}

.sound-toggle{
  min-height:var(--tap);border-radius:16px;border:2px solid var(--line);
  background:#fff;font-size:13px;font-weight:800;color:var(--ink-soft);
  display:flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;
}
.sound-toggle:active{transform:scale(.98);}

/* ---------- 主区 ---------- */
.main{flex:1;min-width:0;display:flex;flex-direction:column;gap:16px;}
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:16px 20px;
}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0;}
.topbar-emoji{
  width:52px;height:52px;flex:0 0 52px;border-radius:18px;display:grid;place-items:center;
  font-size:26px;background:linear-gradient(135deg,var(--pink-l),var(--purple-l));
}
.topbar h2{font-size:21px;font-weight:900;}
.topbar p{font-size:12px;color:var(--ink-faint);margin-top:3px;}
.topbar-right{display:flex;align-items:center;gap:10px;}
.star-pill{
  display:flex;align-items:center;gap:7px;background:linear-gradient(135deg,#FFF1C9,#FFE0EF);
  border-radius:99px;padding:10px 16px;font-size:17px;font-weight:900;color:var(--yellow-d);
  min-height:44px;
}
.star-pill.bump{animation:bump .45s;}
.star-pill-icon{font-size:18px;}
.icon-btn{
  min-width:44px;min-height:44px;border-radius:14px;border:2px solid var(--line);
  background:#fff;font-size:19px;cursor:pointer;
}
.mobile-only{display:none;}

.views{display:block;}
.view{display:none;animation:fadeUp .35s ease;}
.view.on{display:block;}

.foot{text-align:center;font-size:11.5px;color:var(--ink-faint);padding:8px 0 4px;}

/* ================= 通用组件 ================= */
.panel{
  background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:20px;margin-bottom:16px;
}
.panel-title{display:flex;align-items:center;gap:10px;font-size:16.5px;font-weight:900;margin-bottom:14px;}
.panel-title .pt-emoji{font-size:22px;}
.panel-title .pt-tip{margin-left:auto;font-size:11.5px;font-weight:700;color:var(--ink-faint);}

.seg{display:flex;gap:8px;flex-wrap:wrap;}
.seg-btn{
  flex:1 1 140px;min-height:var(--tap);border-radius:18px;border:2.5px solid var(--line);
  background:#fff;font-size:15px;font-weight:800;color:var(--ink-soft);cursor:pointer;
  transition:transform .15s,box-shadow .15s,background .15s;
}
.seg-btn:active{transform:scale(.97);}
.seg-btn.on{background:linear-gradient(135deg,var(--purple-l),var(--pink-l));color:var(--purple-d);border-color:var(--purple);box-shadow:var(--shadow);}

.btn{
  min-height:var(--tap);padding:12px 24px;border-radius:18px;border:none;
  font-size:16px;font-weight:900;cursor:pointer;color:#fff;
  background:linear-gradient(135deg,var(--purple),var(--pink));
  box-shadow:0 8px 18px rgba(174,139,255,.35);
  transition:transform .15s,filter .15s;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
}
.btn:active{transform:scale(.96);}
.btn.blue{background:linear-gradient(135deg,var(--blue),#6FD6F5);box-shadow:0 8px 18px rgba(67,191,240,.35);}
.btn.green{background:linear-gradient(135deg,var(--green),#8BE9AE);box-shadow:0 8px 18px rgba(84,209,138,.35);}
.btn.yellow{background:linear-gradient(135deg,var(--yellow),#FFD86B);color:#8A6100;box-shadow:0 8px 18px rgba(255,193,46,.35);}
.btn.pink{background:linear-gradient(135deg,var(--pink),#FFA6CE);box-shadow:0 8px 18px rgba(255,126,182,.35);}
.btn.ghost{background:#fff;color:var(--ink-soft);border:2.5px solid var(--line);box-shadow:none;}
.btn.sm{min-height:44px;font-size:14px;padding:9px 18px;border-radius:15px;}
.btn-row{display:flex;gap:10px;flex-wrap:wrap;}

.progress{height:12px;border-radius:99px;background:#F4EFFC;overflow:hidden;margin-top:4px;}
.progress i{display:block;height:100%;width:0;border-radius:99px;background:linear-gradient(90deg,var(--green),var(--blue));transition:width .5s;}
.chip{
  display:inline-flex;align-items:center;gap:6px;background:var(--blue-l);color:var(--blue-d);
  font-size:11.5px;font-weight:800;border-radius:99px;padding:6px 12px;
}
.chip.pink{background:var(--pink-l);color:var(--pink-d);}
.chip.green{background:var(--green-l);color:var(--green-d);}
.chip.yellow{background:var(--yellow-l);color:var(--yellow-d);}
.chip.purple{background:var(--purple-l);color:var(--purple-d);}

/* 选项按钮（答题） */
.options{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));}
.opt{
  min-height:74px;border-radius:20px;border:3px solid var(--line);background:#fff;
  font-size:26px;font-weight:900;cursor:pointer;color:var(--ink);
  display:grid;place-items:center;transition:transform .15s,border-color .15s,background .15s;
  padding:8px;
}
.opt:active{transform:scale(.96);}
.opt:hover{border-color:var(--blue);}
.opt.big{font-size:30px;}
.opt.right{background:var(--green-l);border-color:var(--green);color:var(--green-d);}
.opt.wrong{background:#FFEAEA;border-color:#FF9B9B;color:#D9534F;animation:shake .4s;}
.opt.dim{opacity:.45;}
.opt:disabled{cursor:default;}

/* 反馈条 */
.feedback{
  margin-top:14px;border-radius:18px;padding:14px 16px;font-size:16px;font-weight:900;
  display:none;align-items:center;gap:10px;
}
.feedback.show{display:flex;animation:fadeUp .3s;}
.feedback.ok{background:var(--green-l);color:var(--green-d);}
.feedback.no{background:#FFF0F0;color:#D9534F;}

/* 数字 / 计分 */
.score-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px;}
.score-box{
  flex:1 1 90px;background:linear-gradient(135deg,#fff,#FAF6FF);border:2px solid var(--line);
  border-radius:18px;padding:12px;text-align:center;
}
.score-box b{display:block;font-size:24px;font-weight:900;color:var(--purple-d);}
.score-box span{font-size:11px;color:var(--ink-faint);}

/* ================= 字母乐园 ================= */
.letter-grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));}
.letter-card{
  aspect-ratio:1/.98;border-radius:22px;border:none;cursor:pointer;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  box-shadow:0 6px 16px rgba(140,120,190,.14);transition:transform .15s,box-shadow .15s;
  position:relative;overflow:hidden;padding:6px;
}
.letter-card:active{transform:scale(.94);}
.letter-card .lc-upper{font-size:38px;font-weight:900;line-height:1;letter-spacing:1px;}
.letter-card .lc-lower{font-size:17px;font-weight:800;opacity:.62;line-height:1.1;}
.letter-card .lc-word{font-size:10.5px;font-weight:800;opacity:.75;margin-top:3px;}
.letter-card .lc-emoji{position:absolute;top:4px;right:6px;font-size:15px;opacity:.9;}
.letter-card.done::after{
  content:"✓";position:absolute;bottom:5px;left:7px;font-size:12px;font-weight:900;
  color:#2FAE67;background:#fff;border-radius:99px;width:17px;height:17px;display:grid;place-items:center;
  box-shadow:0 2px 6px rgba(0,0,0,.1);
}
.letter-card.speaking{animation:bump .5s;outline:4px solid rgba(255,255,255,.9);}

.match-wrap{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.match-col{display:flex;flex-direction:column;gap:10px;}
.match-card{
  min-height:64px;border-radius:18px;border:3px solid var(--line);background:#fff;
  font-size:28px;font-weight:900;cursor:pointer;display:grid;place-items:center;
  transition:transform .15s,border-color .15s,background .15s;
}
.match-card:active{transform:scale(.96);}
.match-card.sel{border-color:var(--blue);background:var(--blue-l);transform:scale(1.03);}
.match-card.matched{background:var(--green-l);border-color:var(--green);color:var(--green-d);cursor:default;}
.match-card.shake{animation:shake .4s;}
.match-head{font-size:12px;font-weight:900;color:var(--ink-faint);text-align:center;}

/* ================= 古诗花园 ================= */
.poem-grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));}
.poem-card{
  border-radius:22px;border:3px solid var(--line);background:#fff;padding:16px;cursor:pointer;
  text-align:left;transition:transform .15s,box-shadow .15s,border-color .15s;position:relative;min-height:120px;
}
.poem-card:active{transform:scale(.97);}
.poem-card.on{border-color:var(--pink);box-shadow:var(--shadow-lg);background:linear-gradient(135deg,#fff,var(--pink-l));}
.poem-card .pc-emoji{font-size:24px;}
.poem-card .pc-title{font-size:17px;font-weight:900;margin-top:6px;}
.poem-card .pc-auth{font-size:11px;color:var(--ink-faint);margin-top:2px;}
.poem-card .pc-preview{font-size:12px;color:var(--ink-soft);margin-top:8px;line-height:1.6;}
.poem-card .pc-read{
  position:absolute;top:12px;right:12px;font-size:10px;font-weight:900;
  background:var(--green-l);color:var(--green-d);border-radius:99px;padding:3px 9px;
}
.poem-detail{
  background:linear-gradient(150deg,#FFFBEF,#FFF3FA 55%,#F3F0FF);
  border-radius:var(--radius);padding:22px;border:3px dashed #FFE0F0;
}
.poem-detail h3{font-size:24px;font-weight:900;text-align:center;}
.poem-detail .pd-author{text-align:center;font-size:12.5px;color:var(--ink-soft);margin-top:6px;}
.poem-line{
  display:block;width:100%;background:none;border:none;cursor:pointer;
  padding:13px 46px 13px 14px;border-radius:16px;transition:background .15s,transform .1s;
  text-align:center;margin-top:6px;position:relative;
  user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;
}
.poem-line:hover{background:rgba(255,255,255,.75);}
.poem-line:active{transform:scale(.975);background:rgba(255,255,255,.95);}
/* 让点击永远落在按钮本身，避免点到拼音小字/文字选中被吞掉 */
.poem-line .pl-char,.poem-line ruby,.poem-line rt{pointer-events:none;}
.poem-line .pl-play{
  position:absolute;right:12px;top:50%;transform:translateY(-50%);
  font-size:16px;opacity:.42;transition:opacity .15s,transform .15s;
}
.poem-line.active .pl-play{opacity:1;transform:translateY(-50%) scale(1.18);}
.poem-line ruby{ruby-align:center;}
.poem-line rt{font-size:12px;font-weight:700;color:var(--purple-d);letter-spacing:0;font-family:"Times New Roman",Georgia,serif;}
.poem-line .pl-char{font-size:29px;font-weight:800;letter-spacing:3px;color:var(--ink);}
.poem-line.active{background:rgba(255,255,255,.92);box-shadow:0 6px 16px rgba(140,120,190,.16);}

/* ================= 数字王国 ================= */
.num-grid{display:grid;gap:10px;grid-template-columns:repeat(auto-fill,minmax(78px,1fr));}
.num-card{
  aspect-ratio:1/1;border-radius:20px;border:none;cursor:pointer;background:#fff;
  font-size:30px;font-weight:900;box-shadow:0 6px 14px rgba(140,120,190,.13);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;
  transition:transform .15s;
}
.num-card:active{transform:scale(.93);}
.num-card small{font-size:10px;font-weight:700;opacity:.6;}
.num-show{
  margin-top:16px;border-radius:22px;padding:18px;background:linear-gradient(135deg,#F3FBFF,#FFF4FA);
  border:3px dashed #DCEFFB;text-align:center;display:none;
}
.num-show.show{display:block;animation:fadeUp .3s;}
.num-show .ns-big{font-size:56px;font-weight:900;color:var(--blue-d);line-height:1;}
.num-show .ns-cn{font-size:16px;font-weight:800;color:var(--ink-soft);margin-top:6px;}
.dots{display:flex;flex-wrap:wrap;gap:7px;justify-content:center;margin-top:14px;max-width:420px;margin-left:auto;margin-right:auto;}
.dot{
  width:26px;height:26px;border-radius:50%;
  background:linear-gradient(135deg,var(--pink),var(--purple));
  box-shadow:0 3px 8px rgba(174,139,255,.35);animation:pop .3s backwards;
}
.count-stage{
  display:flex;flex-wrap:wrap;gap:8px;justify-content:center;align-items:center;
  min-height:120px;background:linear-gradient(135deg,#FFFAE8,#FFF2F8);border-radius:22px;padding:16px;
}
.count-stage .cs-item{font-size:34px;line-height:1;animation:pop .35s backwards;}
.question-box{
  border-radius:22px;padding:22px 16px;text-align:center;
  background:linear-gradient(135deg,#FFF6E6,#FFEFF7);border:3px dashed #FFE2C9;margin-bottom:16px;
}
.question-box .qb-tag{font-size:11.5px;font-weight:900;color:var(--orange);letter-spacing:1px;}
.question-box .qb-main{font-size:40px;font-weight:900;margin-top:8px;letter-spacing:2px;}
.question-box .qb-sub{font-size:13px;color:var(--ink-soft);margin-top:8px;font-weight:700;}

/* ================= 逻辑挑战 ================= */
.q-progress{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:14px;justify-content:center;}
.q-dot{width:24px;height:10px;border-radius:99px;background:#EFE8FA;}
.q-dot.ok{background:var(--green);}
.q-dot.no{background:#FFB3B3;}
.q-dot.now{background:var(--blue);}
.shape-strip{
  display:flex;gap:10px;align-items:center;justify-content:center;flex-wrap:wrap;
  background:#fff;border-radius:22px;border:3px solid var(--line);padding:18px;margin-bottom:16px;
  min-height:110px;
}
.shape-strip .ss-item{font-size:40px;line-height:1;animation:pop .3s backwards;}
.shape-strip .ss-mystery{
  width:60px;height:60px;border-radius:18px;border:3px dashed var(--purple);
  display:grid;place-items:center;font-size:30px;font-weight:900;color:var(--purple);background:var(--purple-l);
}

/* ================= 闯关冒险 ================= */
.level-grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(158px,1fr));}
.level-card{
  border-radius:24px;padding:18px 14px;border:3px solid transparent;cursor:pointer;text-align:center;
  box-shadow:var(--shadow);transition:transform .15s,box-shadow .15s;position:relative;overflow:hidden;
}
.level-card:active{transform:scale(.97);}
.level-card .lv-no{font-size:11px;font-weight:900;letter-spacing:1px;opacity:.7;}
.level-card .lv-emoji{font-size:38px;line-height:1.2;}
.level-card .lv-name{font-size:16px;font-weight:900;margin-top:4px;}
.level-card .lv-desc{font-size:11px;color:var(--ink-soft);margin-top:4px;min-height:28px;line-height:1.4;}
.level-card .lv-stars{font-size:17px;letter-spacing:3px;margin-top:8px;}
.level-card.locked{filter:grayscale(.72);opacity:.68;cursor:not-allowed;}
.level-card.locked::after{content:"🔒";position:absolute;top:12px;right:12px;font-size:19px;}

.badge-wall{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(126px,1fr));}
.badge{
  border-radius:22px;padding:16px 10px;text-align:center;border:3px solid var(--line);background:#fff;
  transition:transform .2s;
}
.badge.got{
  border-color:transparent;background:linear-gradient(150deg,#FFF7DC,#FFEAF5 60%,#F0EAFF);
  box-shadow:var(--shadow);animation:pop .4s backwards;
}
.badge.lock{filter:grayscale(1);opacity:.55;}
.badge .bd-icon{font-size:34px;line-height:1.2;}
.badge .bd-name{font-size:13.5px;font-weight:900;margin-top:6px;}
.badge .bd-desc{font-size:10.5px;color:var(--ink-soft);margin-top:5px;line-height:1.45;min-height:30px;}
.badge .bd-state{font-size:10.5px;font-weight:900;margin-top:6px;color:var(--green-d);}
.badge.lock .bd-state{color:var(--ink-faint);}

/* 弹窗 */
.modal{
  position:fixed;inset:0;background:rgba(59,51,85,.42);backdrop-filter:blur(3px);
  display:none;place-items:center;padding:20px;z-index:80;
}
.modal.on{display:grid;animation:fade .25s;}
.modal-card{
  background:#fff;border-radius:28px;max-width:420px;width:100%;padding:26px 22px;text-align:center;
  box-shadow:var(--shadow-lg);animation:popIn .35s cubic-bezier(.34,1.56,.64,1);
  max-height:88vh;overflow:auto;
}
.modal-card .mc-emoji{font-size:56px;line-height:1;}
.modal-card h3{font-size:23px;font-weight:900;margin-top:10px;}
.modal-card .mc-text{font-size:14px;color:var(--ink-soft);margin-top:10px;line-height:1.7;}
.modal-card .mc-stars{font-size:38px;letter-spacing:6px;margin:14px 0;}
.modal-card .btn-row{justify-content:center;margin-top:18px;}

/* Toast */
.toast{
  position:fixed;left:50%;bottom:96px;transform:translate(-50%,20px);
  background:rgba(59,51,85,.94);color:#fff;font-size:14.5px;font-weight:800;
  border-radius:99px;padding:13px 24px;z-index:90;opacity:0;pointer-events:none;
  transition:opacity .25s,transform .25s;max-width:88vw;text-align:center;
  box-shadow:0 12px 30px rgba(59,51,85,.32);
}
.toast.show{opacity:1;transform:translate(-50%,0);}

/* 特效层 */
.fx{position:fixed;inset:0;pointer-events:none;z-index:70;overflow:hidden;}
.fx-star{position:absolute;font-size:28px;animation:floatUp 1.5s ease-out forwards;}
.fx-conf{position:absolute;width:10px;height:10px;border-radius:3px;animation:confFall linear forwards;}

/* ================= 移动端 ================= */
.tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:60;
  background:rgba(255,255,255,.96);backdrop-filter:blur(12px);
  border-top:2px solid var(--line);
  padding:6px 4px calc(6px + env(safe-area-inset-bottom));
  box-shadow:0 -6px 22px rgba(140,120,190,.12);
}
.tabbar-inner{display:flex;justify-content:space-around;align-items:stretch;}
.tab{
  flex:1;min-height:56px;border:none;background:none;cursor:pointer;border-radius:16px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:10.5px;font-weight:800;color:var(--ink-faint);padding:4px 0;
}
.tab .tb-emoji{font-size:21px;line-height:1;}
.tab.on{color:var(--purple-d);background:linear-gradient(135deg,var(--purple-l),var(--pink-l));}

@media (max-width:900px){
  .app{padding:12px;gap:0;}
  .sidebar{display:none;}
  .tabbar{display:block;}
  .mobile-only{display:inline-flex;}
  .main{padding-bottom:86px;}
  .topbar{padding:13px 15px;border-radius:20px;}
  .topbar-emoji{width:44px;height:44px;flex:0 0 44px;font-size:22px;border-radius:15px;}
  .topbar h2{font-size:18px;}
  .topbar p{font-size:11px;}
  .panel{padding:16px;border-radius:20px;}
  .letter-grid{grid-template-columns:repeat(auto-fill,minmax(80px,1fr));gap:9px;}
  .letter-card .lc-upper{font-size:31px;}
  .letter-card .lc-lower{font-size:14px;}
  .letter-card .lc-word{font-size:9px;}
  .num-grid{grid-template-columns:repeat(auto-fill,minmax(66px,1fr));gap:8px;}
  .num-card{font-size:25px;}
  .poem-grid{
    display:flex;gap:10px;overflow-x:auto;padding:2px 2px 10px;
    scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
  }
  .poem-grid::-webkit-scrollbar{height:5px;}
  .poem-grid::-webkit-scrollbar-thumb{background:#E6DCF7;border-radius:99px;}
  .poem-card{
    flex:0 0 158px;min-height:104px;scroll-snap-align:start;padding:13px;
  }
  .poem-card .pc-title{font-size:15px;}
  .poem-card .pc-preview{display:none;}
  .poem-line{padding:12px 40px 12px 12px;margin-top:5px;}
  .poem-line .pl-char{font-size:24px;letter-spacing:1px;}
  .poem-line rt{font-size:10.5px;}
  .poem-detail{padding:16px 8px;}
  .options{grid-template-columns:1fr 1fr;}
  .level-grid{grid-template-columns:1fr 1fr;gap:10px;}
  .badge-wall{grid-template-columns:1fr 1fr;}
  .shape-strip .ss-item{font-size:32px;}
  .question-box .qb-main{font-size:33px;}
  .toast{bottom:84px;}
}
@media (max-width:360px){
  .letter-grid{grid-template-columns:repeat(3,1fr);}
  .num-grid{grid-template-columns:repeat(4,1fr);}
}

/* ================= 动画 ================= */
@keyframes fadeUp{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:none;}}
@keyframes fade{from{opacity:0;}to{opacity:1;}}
@keyframes popIn{from{opacity:0;transform:scale(.82);}to{opacity:1;transform:scale(1);}}
@keyframes pop{from{opacity:0;transform:scale(.4);}to{opacity:1;transform:scale(1);}}
@keyframes bump{0%{transform:scale(1);}35%{transform:scale(1.22);}100%{transform:scale(1);}}
@keyframes shake{0%,100%{transform:translateX(0);}20%{transform:translateX(-7px);}40%{transform:translateX(7px);}60%{transform:translateX(-5px);}80%{transform:translateX(5px);}}
@keyframes pulse{0%,100%{transform:scale(1);}50%{transform:scale(1.14);}}
@keyframes floatUp{0%{opacity:1;transform:translateY(0) scale(.6);}100%{opacity:0;transform:translateY(-150px) scale(1.3);}}
@keyframes confFall{0%{opacity:1;transform:translateY(0) rotate(0);}100%{opacity:0;transform:translateY(90vh) rotate(720deg);}}