:root{
  --bg:#0F1230; --bg2:#151A3D; --panel:#1E2450; --panel2:#262E63;
  --gold:#FFC94D; --orange:#FF8A3D; --blue:#3D8BFF; --green:#35C28A;
  --red:#FF5D6C; --text:#EDF1FF; --muted:#9AA4CE;
  --radius:22px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
html,body{height:100%;}
body{
  margin:0;font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  color:var(--text);background:
    radial-gradient(900px 500px at 15% -10%,rgba(61,139,255,.22),transparent 60%),
    radial-gradient(800px 500px at 90% 0%,rgba(255,201,77,.14),transparent 60%),
    linear-gradient(180deg,#0B0E24 0%,#0F1230 40%,#131843 100%);
  background-attachment:fixed;min-height:100vh;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(1.5px 1.5px at 20% 30%,#fff,transparent),
    radial-gradient(1px 1px at 70% 20%,#fff,transparent),
    radial-gradient(1.5px 1.5px at 45% 70%,#cfe0ff,transparent),
    radial-gradient(1px 1px at 85% 60%,#fff,transparent),
    radial-gradient(1px 1px at 10% 80%,#fff,transparent);
  background-size:500px 500px,400px 400px,600px 600px,450px 450px,350px 350px;
}
#app{max-width:1080px;margin:0 auto;padding:18px 20px 90px;position:relative;z-index:1;}

/* 顶栏 */
.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:1px;}
.brand .helm{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;font-size:22px;
  background:linear-gradient(145deg,#FF5D6C,#FFC94D);box-shadow:0 6px 18px rgba(255,93,108,.35);
}
.stats{display:flex;gap:10px;}
.stat{display:flex;align-items:center;gap:6px;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.08);padding:7px 12px;border-radius:999px;font-size:14px;}
.stat b{color:var(--gold);font-size:16px;}

/* 首页 */
.hero{background:linear-gradient(135deg,rgba(61,139,255,.22),rgba(255,201,77,.10));
  border:1px solid rgba(255,255,255,.10);border-radius:var(--radius);padding:22px 24px;margin-bottom:18px;
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;}
.hero h1{margin:0 0 6px;font-size:24px;}
.hero p{margin:0;color:var(--muted);font-size:14px;}
.energy-big{font-size:34px;font-weight:900;color:var(--gold);display:flex;align-items:center;gap:10px;}

.portals{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.portal{border-radius:var(--radius);padding:24px 20px;cursor:pointer;position:relative;overflow:hidden;
  border:1px solid rgba(255,255,255,.10);transition:transform .18s ease,box-shadow .18s ease;}
.portal:hover{transform:translateY(-4px);}
.portal:active{transform:scale(.98);}
.portal .icon{font-size:40px;margin-bottom:10px;}
.portal h3{margin:0 0 6px;font-size:22px;}
.portal p{margin:0;font-size:13px;color:rgba(255,255,255,.75);}
.portal.yw{background:linear-gradient(150deg,rgba(255,138,61,.28),rgba(255,138,61,.06));}
.portal.sx{background:linear-gradient(150deg,rgba(61,139,255,.28),rgba(61,139,255,.06));}
.portal.yy{background:linear-gradient(150deg,rgba(53,194,138,.28),rgba(53,194,138,.06));}
.portal .go{margin-top:14px;font-size:13px;opacity:.8;}

/* 单元列表 */
.page-head{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.back{background:rgba(255,255,255,.08);border:0;color:var(--text);width:42px;height:42px;border-radius:14px;font-size:18px;cursor:pointer;}
.page-head h2{margin:0;font-size:22px;}
.units{display:grid;gap:12px;}
.unit{display:flex;align-items:center;gap:14px;background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.08);border-radius:18px;padding:14px 16px;}
.unit .no{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;font-weight:800;font-size:18px;
  background:rgba(255,255,255,.10);flex:none;}
.unit .info{flex:1;min-width:0;}
.unit .info b{display:block;font-size:16px;margin-bottom:3px;}
.unit .info span{font-size:12.5px;color:var(--muted);}
.unit .acts{display:flex;gap:8px;flex:none;}
.btn{border:0;border-radius:14px;padding:11px 18px;font-size:15px;font-weight:700;cursor:pointer;
  color:#0E1130;background:linear-gradient(145deg,#FFD86B,#FFB01F);box-shadow:0 6px 16px rgba(255,176,31,.28);}
.btn:active{transform:scale(.97);}
.btn.ghost{background:rgba(255,255,255,.10);color:var(--text);box-shadow:none;}
.btn.small{padding:8px 12px;font-size:13px;border-radius:11px;}
.btn:disabled{opacity:.4;cursor:not-allowed;}
.lock{font-size:13px;color:var(--muted);padding:8px 12px;background:rgba(255,255,255,.05);border-radius:11px;}

/* 答题 */
.quiz{max-width:760px;margin:0 auto;}
.qbar{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.qbar .progress{flex:1;height:10px;border-radius:99px;background:rgba(255,255,255,.10);overflow:hidden;}
.qbar .progress i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,#FFC94D,#FF8A3D);transition:width .3s;}
.qbar span{font-size:13px;color:var(--muted);flex:none;}
.card{background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.10);border-radius:26px;padding:26px 24px;
  animation:pop .25s ease;}
@keyframes pop{from{opacity:0;transform:translateY(10px) scale(.99);}to{opacity:1;transform:none;}}
.qtype{font-size:12px;letter-spacing:2px;color:var(--gold);margin-bottom:10px;font-weight:700;}
.stem{font-size:22px;line-height:1.65;margin-bottom:20px;font-weight:700;}
.passage{background:rgba(0,0,0,.22);border-radius:16px;padding:16px;margin-bottom:18px;font-size:16px;line-height:1.9;color:#D9E1FF;}
.options{display:grid;gap:12px;}
.opt{display:flex;align-items:center;gap:14px;background:rgba(255,255,255,.06);border:2px solid transparent;
  border-radius:18px;padding:16px 18px;font-size:18px;cursor:pointer;transition:.15s;min-height:64px;}
.opt:hover{background:rgba(255,255,255,.10);}
.opt .key{width:34px;height:34px;border-radius:11px;background:rgba(255,255,255,.12);display:grid;place-items:center;
  font-weight:800;font-size:15px;flex:none;}
.opt.sel{border-color:var(--gold);background:rgba(255,201,77,.14);}
.opt.right{border-color:var(--green);background:rgba(53,194,138,.18);}
.opt.wrong{border-color:var(--red);background:rgba(255,93,108,.16);}
.opt.dim{opacity:.45;}
.fill-input{width:100%;padding:18px;border-radius:16px;border:2px solid rgba(255,255,255,.14);
  background:rgba(0,0,0,.25);color:var(--text);font-size:22px;text-align:center;outline:none;}
.fill-input:focus{border-color:var(--gold);}
.match-wrap{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.match-col{display:grid;gap:10px;}
.match-item{padding:14px;border-radius:14px;background:rgba(255,255,255,.06);border:2px solid transparent;
  text-align:center;font-size:17px;cursor:pointer;}
.match-item.sel{border-color:var(--gold);background:rgba(255,201,77,.14);}
.match-item.done{opacity:.55;border-color:var(--green);}
.feedback{margin-top:18px;border-radius:16px;padding:14px 16px;font-size:15px;line-height:1.7;display:none;}
.feedback.show{display:block;animation:pop .2s ease;}
.feedback.ok{background:rgba(53,194,138,.15);border:1px solid rgba(53,194,138,.4);}
.feedback.no{background:rgba(255,93,108,.13);border:1px solid rgba(255,93,108,.4);}
.actions{display:flex;gap:12px;margin-top:20px;}
.actions .btn{flex:1;min-height:56px;font-size:17px;}

/* 结算 */
.result{max-width:620px;margin:0 auto;text-align:center;}
.big-score{font-size:64px;font-weight:900;color:var(--gold);line-height:1.1;margin:10px 0;}
.stars{font-size:38px;letter-spacing:6px;margin:8px 0 18px;}
.earn{display:inline-flex;align-items:center;gap:8px;background:rgba(255,201,77,.14);
  border:1px solid rgba(255,201,77,.4);padding:10px 18px;border-radius:999px;font-size:18px;font-weight:800;color:var(--gold);}

/* 商店 */
.tabs{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap;}
.tab{padding:10px 18px;border-radius:999px;background:rgba(255,255,255,.07);cursor:pointer;font-size:15px;}
.tab.on{background:linear-gradient(145deg,#FFD86B,#FFB01F);color:#0E1130;font-weight:800;}
.goods{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:14px;}
.good{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.09);border-radius:20px;padding:14px;text-align:center;}
.good .thumb{width:100%;aspect-ratio:1/1;border-radius:14px;background:rgba(0,0,0,.25);display:grid;place-items:center;
  font-size:42px;margin-bottom:10px;overflow:hidden;}
.good .thumb img{width:100%;height:100%;object-fit:cover;}
.good b{display:block;font-size:15px;margin-bottom:6px;}
.good .price{color:var(--gold);font-weight:800;margin-bottom:10px;font-size:14px;}
.good .btn{width:100%;}

/* 家长端 */
.panel{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.09);border-radius:20px;padding:18px;margin-bottom:14px;}
.panel h3{margin:0 0 12px;font-size:17px;}
.row{display:flex;gap:10px;align-items:center;margin-bottom:10px;flex-wrap:wrap;}
input.txt,select.txt{background:rgba(0,0,0,.25);border:1px solid rgba(255,255,255,.14);color:var(--text);
  padding:10px 12px;border-radius:12px;font-size:15px;outline:none;}
input.txt:focus{border-color:var(--gold);}
.list{display:grid;gap:8px;}
.list .li{display:flex;align-items:center;gap:10px;background:rgba(255,255,255,.05);padding:10px 12px;border-radius:12px;font-size:14px;}
.list .li .grow{flex:1;}

/* 其它 */
.hidden{display:none !important;}
.toast{position:fixed;left:50%;bottom:36px;transform:translateX(-50%) translateY(20px);opacity:0;
  background:rgba(20,24,60,.96);border:1px solid rgba(255,255,255,.16);padding:12px 20px;border-radius:14px;
  font-size:15px;transition:.25s;z-index:99;pointer-events:none;}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}
.modal{position:fixed;inset:0;background:rgba(5,7,20,.72);display:grid;place-items:center;z-index:80;padding:20px;}
.modal .box{background:#1B2149;border:1px solid rgba(255,255,255,.12);border-radius:22px;padding:24px;max-width:420px;width:100%;}
.empty{text-align:center;color:var(--muted);padding:40px 0;font-size:15px;}
@media (max-width:820px){
  .portals{grid-template-columns:1fr;}
  .stem{font-size:19px;}
  #app{padding:14px 14px 80px;}
  .unit{flex-wrap:wrap;}
}