*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none!important}

:root{
  --bg:#08060f;
  --text:#ece7f8;
  --muted:#9d94bb;
  --gold:#f3c969;
  --gold-2:#ffe9b0;
  --line:rgba(255,255,255,.09);
}

html,body{min-height:100%}
body{
  background:
    radial-gradient(1200px 620px at 50% -12%, rgba(124,77,255,.30), transparent 62%),
    radial-gradient(900px 520px at 92% 8%, rgba(243,201,105,.11), transparent 58%),
    radial-gradient(820px 620px at 6% 82%, rgba(64,160,255,.10), transparent 62%),
    var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

/* ---------- 星空 ---------- */
#stars{position:fixed;inset:0;pointer-events:none;z-index:0}
.star{position:absolute;border-radius:50%;background:#fff;animation:twinkle 4s infinite ease-in-out}
@keyframes twinkle{0%,100%{opacity:.12;transform:scale(.75)}50%{opacity:1;transform:scale(1.25)}}

/* ---------- 布局 ---------- */
.wrap{position:relative;z-index:1;max-width:1120px;margin:0 auto;padding:0 20px 90px}

/* ---------- 头部 ---------- */
.hero{position:relative;z-index:1;text-align:center;padding:70px 20px 38px}
.badge{
  display:inline-block;font-size:12px;letter-spacing:.16em;color:var(--gold);
  border:1px solid rgba(243,201,105,.35);background:rgba(243,201,105,.07);
  padding:6px 16px;border-radius:999px;margin-bottom:26px;
}
h1{
  font-family:"Songti SC","STSong",Georgia,serif;
  font-size:clamp(28px,5.4vw,54px);letter-spacing:.07em;line-height:1.22;
  background:linear-gradient(180deg,#fff8e4,#f3c969 58%,#c99730);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.sub{
  margin-top:14px;font-size:clamp(12px,1.6vw,15px);letter-spacing:.22em;
  color:var(--muted);font-style:italic;text-transform:uppercase;
}
.tagline{margin-top:20px;font-size:14px;color:#bfb5da;line-height:1.9}
.tagline b{color:var(--gold-2)}

/* ---------- 通用组件 ---------- */
.card-plain{
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  border:1px solid var(--line);border-radius:20px;padding:24px;
  backdrop-filter:blur(8px);
}
.btn{
  font:inherit;cursor:pointer;border-radius:11px;border:1px solid transparent;
  padding:10px 18px;font-weight:600;font-size:14px;transition:.2s;white-space:nowrap;
}
.btn.primary{background:linear-gradient(180deg,#ffe9b0,#e8b64b);color:#3a2a05}
.btn.primary:hover{transform:translateY(-1px);box-shadow:0 8px 22px -6px rgba(243,201,105,.55)}
.btn.ghost{background:rgba(255,255,255,.06);color:var(--text);border-color:var(--line)}
.btn.ghost:hover{background:rgba(255,255,255,.11)}
.btn.warn{background:rgba(255,120,120,.15);color:#ff9d9d;border-color:rgba(255,120,120,.3)}
.btn.danger{background:rgba(255,80,80,.12);color:#ff8585;border-color:rgba(255,80,80,.28)}
.btn.danger:hover{background:rgba(255,80,80,.2)}
.muted{color:var(--muted)}
.small{font-size:12.5px}
.gold{color:var(--gold-2)}
.inp{
  width:100%;font:inherit;color:var(--text);background:rgba(255,255,255,.06);
  border:1px solid var(--line);border-radius:11px;padding:12px 14px;outline:none;transition:.2s;
}
.inp:focus{border-color:rgba(243,201,105,.6);box-shadow:0 0 0 3px rgba(243,201,105,.12)}
.inp::placeholder{color:#6f668c}
select.inp option{background:#1a1230;color:var(--text)}
.row{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap}
.row .inp{flex:1;min-width:140px}
.lbl{display:block;font-size:12.5px;color:var(--muted);margin:16px 0 7px;letter-spacing:.04em}

/* ---------- 登录 ---------- */
.login{margin-bottom:26px}
.login h2{font-size:19px;margin-bottom:8px;letter-spacing:.03em}
.login .row{margin-top:18px}

/* ---------- 钱包 ---------- */
.wallet{
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  background:linear-gradient(120deg,rgba(243,201,105,.11),rgba(124,77,255,.13));
  border:1px solid rgba(243,201,105,.22);border-radius:20px;
  padding:18px 22px;margin-bottom:28px;backdrop-filter:blur(10px);
}
.who{display:flex;align-items:center;gap:12px}
.avatar{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;font-size:22px;
  background:rgba(255,255,255,.08);border:1px solid var(--line);
}
.wl{font-size:11px;letter-spacing:.16em;color:var(--muted);text-transform:uppercase}
.wname{font-size:17px;font-weight:700;margin-top:3px}
.coinbox{display:flex;align-items:baseline;gap:8px;margin-left:12px}
.coinbox .coin{font-size:22px;transform:translateY(2px)}
.coinbox .num{
  font-size:38px;font-weight:800;line-height:1;color:var(--gold-2);
  font-variant-numeric:tabular-nums;text-shadow:0 0 26px rgba(243,201,105,.45);
}
.coinbox .unit{font-size:13px;color:var(--muted)}
.wallet-right{margin-left:auto;display:flex;align-items:center;gap:14px;flex-wrap:wrap}

/* ---------- 筛选 ---------- */
.toolbar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:22px}
.tabs{display:flex;gap:8px;flex-wrap:wrap}
.tab{
  font:inherit;cursor:pointer;font-size:13.5px;font-weight:600;
  padding:8px 17px;border-radius:999px;color:var(--muted);
  background:rgba(255,255,255,.04);border:1px solid var(--line);transition:.2s;
}
.tab:hover{color:var(--text);background:rgba(255,255,255,.09)}
.tab.active{color:#3a2a05;background:linear-gradient(180deg,#ffe9b0,#e8b64b);border-color:transparent}

/* ---------- 商品网格 ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(248px,1fr));gap:16px}
.card{
  position:relative;display:flex;flex-direction:column;overflow:hidden;
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  border:1px solid var(--line);border-radius:18px;padding:22px 18px 16px;
  transition:transform .22s,box-shadow .22s,border-color .22s;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--tier);box-shadow:0 0 20px var(--tier);
}
.card:hover{
  transform:translateY(-4px);
  border-color:var(--tier);
  box-shadow:0 20px 44px -20px var(--tier-glow);
}
.tier-common{--tier:#9aa4b8;--tier-glow:rgba(154,164,184,.5)}
.tier-rare{--tier:#5aa9ff;--tier-glow:rgba(90,169,255,.5)}
.tier-epic{--tier:#b678ff;--tier-glow:rgba(182,120,255,.5)}
.tier-legend{--tier:#ffc857;--tier-glow:rgba(255,200,87,.55)}
.tier-legend{animation:legendPulse 3.4s ease-in-out infinite}
@keyframes legendPulse{
  0%,100%{box-shadow:0 0 0 rgba(255,200,87,0)}
  50%{box-shadow:0 0 34px -8px rgba(255,200,87,.5)}
}
.ribbon{
  position:absolute;top:15px;right:15px;font-size:10.5px;font-weight:700;
  letter-spacing:.14em;padding:4px 10px;border-radius:999px;
  color:var(--tier);background:var(--tier-glow);border:1px solid var(--tier);
  backdrop-filter:blur(4px);
}
.card .icon{font-size:36px;line-height:1;margin-bottom:14px;filter:drop-shadow(0 6px 14px rgba(0,0,0,.55))}
.card h3{font-size:17px;font-weight:700;letter-spacing:.02em;padding-right:56px}
.card .en{font-size:11.5px;color:var(--muted);font-style:italic;margin-top:4px;letter-spacing:.03em}
.card .desc{font-size:13px;color:#b9b0d4;line-height:1.7;margin:14px 0 18px;flex:1}
.card .foot{display:flex;align-items:center;justify-content:space-between;gap:10px}
.price{font-weight:800;font-size:16px;color:var(--gold-2);display:flex;align-items:center;gap:6px}
.price .c{font-size:15px}
.btn.buy{
  background:linear-gradient(180deg,#ffe9b0,#e8b64b);color:#3a2a05;
  border:none;padding:9px 20px;font-size:13.5px;
}
.btn.buy:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 8px 20px -6px rgba(243,201,105,.6)}
.btn.buy:disabled{opacity:.35;cursor:not-allowed;filter:grayscale(.7)}
.card.soldout{opacity:.55}

/* ---------- 记录 ---------- */
.log-wrap{margin-top:52px}
.log-wrap h2{
  font-family:"Songti SC","STSong",Georgia,serif;
  font-size:21px;letter-spacing:.06em;margin-bottom:16px;color:var(--gold-2);
}
.log-item{
  display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;
  padding:13px 18px;border:1px solid var(--line);border-radius:13px;
  background:rgba(255,255,255,.025);margin-bottom:9px;font-size:13.5px;
}
.code{font-family:ui-monospace,Menlo,Consolas,monospace;color:var(--gold);letter-spacing:.1em;font-weight:600}

/* ---------- 页脚 ---------- */
footer{
  position:relative;z-index:1;text-align:center;padding:44px 20px 60px;
  color:#6b6390;font-size:12.5px;line-height:2;
}

/* ---------- 模态框 ---------- */
.overlay{
  position:fixed;inset:0;z-index:50;display:flex;align-items:center;justify-content:center;
  padding:20px;background:rgba(4,2,10,.8);backdrop-filter:blur(7px);
  opacity:0;pointer-events:none;transition:.22s;
}
.overlay.show{opacity:1;pointer-events:auto}
.modal{
  width:min(440px,100%);max-height:88vh;overflow-y:auto;
  background:linear-gradient(180deg,#1a1333,#100b21);
  border:1px solid rgba(243,201,105,.26);border-radius:22px;padding:28px;
  box-shadow:0 40px 90px -24px rgba(0,0,0,.95);
  transform:translateY(12px) scale(.975);transition:.26s cubic-bezier(.2,.9,.3,1.2);
}
.overlay.show .modal{transform:none}
.modal h2{
  font-family:"Songti SC","STSong",Georgia,serif;
  font-size:21px;letter-spacing:.05em;margin-bottom:12px;color:var(--gold-2);
}
.modal p{font-size:14px;line-height:1.85;color:#c3bade}
.modal hr{border:none;border-top:1px solid var(--line);margin:20px 0 4px}
.confirm-item{
  display:flex;align-items:center;gap:14px;padding:15px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  border-radius:14px;margin:6px 0 16px;
}
.ci-icon{font-size:30px}
.ci-name{font-weight:700;font-size:15.5px}
.ci-en{font-size:11.5px;color:var(--muted);font-style:italic;margin-top:2px}
.code-big{
  font-family:ui-monospace,Menlo,Consolas,monospace;
  font-size:26px;font-weight:800;letter-spacing:.16em;text-align:center;
  color:var(--gold-2);padding:18px;margin:12px 0 4px;
  background:rgba(243,201,105,.09);border:1px dashed rgba(243,201,105,.5);border-radius:14px;
  text-shadow:0 0 24px rgba(243,201,105,.5);
}

/* ---------- Toast ---------- */
#toast{
  position:fixed;left:50%;bottom:38px;transform:translate(-50%,26px);
  z-index:80;padding:13px 26px;border-radius:999px;font-size:14px;font-weight:600;
  background:linear-gradient(180deg,#2a2048,#1b1433);
  border:1px solid rgba(243,201,105,.4);color:var(--gold-2);
  box-shadow:0 20px 46px -16px rgba(0,0,0,.9);
  opacity:0;pointer-events:none;transition:.3s;
}
#toast.show{opacity:1;transform:translate(-50%,0)}

/* ---------- 教师入口 ---------- */
.fab{
  position:fixed;right:18px;bottom:18px;z-index:40;
  font:inherit;cursor:pointer;font-size:12.5px;font-weight:600;
  padding:10px 16px;border-radius:999px;text-decoration:none;
  color:#8f86b3;background:rgba(20,14,38,.85);border:1px solid var(--line);
  backdrop-filter:blur(8px);transition:.2s;
}
.fab:hover{color:var(--gold-2);border-color:rgba(243,201,105,.45)}

@media(max-width:600px){
  .hero{padding:48px 18px 28px}
  .wallet{padding:16px}
  .coinbox .num{font-size:31px}
  .wallet-right{margin-left:0;width:100%;justify-content:space-between}
  .grid{grid-template-columns:1fr}
}