:root{--bg:#fff8f0;--card:#fff;--ink:#2b2a33;--muted:#6b6875;--line:#efe6dc;--pri:#ff8a3d;--pri-d:#e56b17;--ok:#1f9d55;--ok-bg:#e6f7ee;--bad:#d64545;--bad-bg:#fdecec;--blue:#3d7bff;--yel:#ffd34d;--r:18px}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
.top{position:sticky;top:0;z-index:10;display:flex;justify-content:space-between;align-items:center;padding:10px 16px;padding-top:max(10px,env(safe-area-inset-top));background:rgba(255,248,240,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.brand{display:flex;gap:10px;align-items:center}.brand b{display:block;font-size:17px}.brand small{color:var(--muted);font-size:12px}.logo{font-size:30px}
main{max-width:560px;margin:0 auto;padding:12px 12px 40px}
.card{background:var(--card);border-radius:var(--r);padding:16px;margin:12px 0;box-shadow:0 2px 0 var(--line)}
h2{margin:0 0 10px;font-size:19px}
.muted,.note{color:var(--muted);font-size:14px}.note{background:#fff3e0;padding:10px 12px;border-radius:12px}
.btn{min-height:44px;padding:0 16px;border-radius:999px;font-weight:600}
.btn.primary{background:var(--pri);color:#fff}.btn.primary:active{background:var(--pri-d)}.btn.primary:disabled{background:#c9c2bb}
.btn.ghost{background:#fff;border:2px solid var(--pri);color:var(--pri-d)}
.btn.soft{background:#f3eee8}
.chips{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;scrollbar-width:none}
.chips button{flex:0 0 auto;min-height:40px;padding:0 14px;border-radius:999px;background:#f3eee8;font-size:14px;white-space:nowrap}
.chips button[aria-selected=true]{background:var(--ink);color:#fff}
.units{list-style:none;margin:10px 0 0;padding:0;display:grid;gap:8px}
.units button{width:100%;display:flex;align-items:center;gap:12px;text-align:left;padding:12px;border-radius:14px;background:#faf6f1;border:2px solid transparent;min-height:56px}
.units button.on{border-color:var(--pri);background:#fff3e8}
.units .no{width:32px;height:32px;border-radius:50%;background:#fff;display:grid;place-items:center;font-weight:700;flex:0 0 auto}
.units .t{flex:1}.units .t b{display:block;font-size:15px}.units .t small{color:var(--muted)}
.units .tag{font-size:12px;padding:3px 8px;border-radius:999px;background:#ece6df;color:#4a4652;white-space:nowrap}
.units .tag.free{background:var(--ok-bg);color:#11663a}.units .tag.done{background:#2b2a33;color:#fff}
.learn-head{display:flex;justify-content:space-between;align-items:center}.learn-head small{color:var(--muted)}.learn-head h2{margin:0}
.ring{--p:0;width:54px;height:54px;border-radius:50%;background:conic-gradient(var(--pri) calc(var(--p)*1%),#f0e8df 0);display:grid;place-items:center}
.ring span{width:42px;height:42px;border-radius:50%;background:#fff;display:grid;place-items:center;font-size:13px;font-weight:700}
.tabs{display:grid;grid-template-columns:repeat(5,1fr);gap:4px;background:#f3eee8;padding:4px;border-radius:14px;margin:14px 0}
.tabs button{min-height:40px;border-radius:10px;font-size:14px;color:#4a4652}
.tabs button[aria-selected=true]{background:#fff;color:var(--ink);font-weight:700;box-shadow:0 1px 3px rgba(0,0,0,.08)}
.bar{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:12px}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
@media (min-width:480px){.grid{grid-template-columns:repeat(3,1fr)}}
.wcard{position:relative;border-radius:16px;background:#faf6f1;padding:12px 10px;text-align:center;min-height:150px;display:flex;flex-direction:column;justify-content:center;gap:4px;border:2px solid transparent}
.wcard.heard{border-color:#bfe8cf}
.wcard .emo{font-size:40px;line-height:1.1}.wcard .en{font-size:20px;font-weight:700}.wcard .ipa{color:var(--muted);font-size:13px}
.wcard .cn{font-size:16px;font-weight:600}.wcard .ex{font-size:13px}.wcard .excn{font-size:12px;color:var(--muted)}
.wcard .flip{position:absolute;inset:0;border-radius:16px}
.wcard .acts{display:flex;justify-content:center;gap:6px;position:relative;z-index:1;margin-top:4px}
.ic{min-width:40px;min-height:40px;border-radius:999px;background:#fff;font-size:17px;padding:0 10px;box-shadow:0 1px 2px rgba(0,0,0,.08)}
.ic.playing{background:var(--yel)}
.check{position:absolute;top:6px;right:8px;font-size:12px;color:var(--ok)}
.pcard{background:#faf6f1;border-radius:14px;padding:12px;margin-bottom:10px;display:flex;gap:10px;align-items:flex-start}
.pcard .t{flex:1}.pcard b{display:block}.pcard small{color:var(--muted)}
.namebox{display:flex;gap:8px;margin-top:8px}
input{font:inherit;min-height:44px;border:2px solid var(--line);border-radius:12px;padding:0 12px;width:100%;background:#fff}
input:focus{outline:none;border-color:var(--pri)}
.chat{display:grid;gap:10px}
.line{display:flex;gap:8px;align-items:flex-start}.line.r{flex-direction:row-reverse}
.av{font-size:28px;flex:0 0 auto;text-align:center;width:44px}.av small{display:block;font-size:11px;color:var(--muted)}
.bub{background:#faf6f1;border-radius:16px;padding:10px 12px;max-width:78%;border:2px solid transparent}
.line.r .bub{background:#eef4ff}.bub.cur{border-color:var(--pri)}
.bub .en{font-weight:600}.bub .cn{font-size:13px;color:var(--muted)}.hidecn .bub .cn{display:none}
.bub .acts{display:flex;gap:6px;margin-top:6px;flex-wrap:wrap}
.bub .ic{min-height:36px;min-width:36px;font-size:14px}
.bub .done{font-size:12px;color:var(--ok);align-self:center}
.rec{background:var(--bad)!important;color:#fff;animation:pulse 1s infinite}@keyframes pulse{50%{opacity:.6}}
.ci{background:#fff3e8;border-radius:14px;padding:12px;margin-bottom:12px}
.prog{height:8px;border-radius:99px;background:#f0e8df;overflow:hidden;margin:6px 0}.prog i{display:block;height:100%;background:var(--pri);width:0;transition:width .3s}
.week{display:grid;grid-template-columns:repeat(7,1fr);text-align:center;font-size:12px;color:var(--muted);margin-top:6px}
.week i{display:block;font-style:normal;font-size:18px;height:26px}.week .today{color:var(--ink);font-weight:700}
.q{background:#faf6f1;border-radius:16px;padding:14px}
.q .qh{display:flex;justify-content:space-between;color:var(--muted);font-size:13px;margin-bottom:8px}
.q .qp{font-size:18px;font-weight:700;margin:4px 0 12px}.q .big{font-size:56px;text-align:center}
.opts{display:grid;gap:8px}.opt{min-height:50px;border-radius:14px;background:#fff;border:2px solid var(--line);font-size:17px;text-align:left;padding:0 14px}
.opt.right{background:var(--ok-bg);border-color:var(--ok)}.opt.wrong{background:var(--bad-bg);border-color:var(--bad)}
.fb{margin-top:10px;padding:10px 12px;border-radius:12px;font-size:14px}.fb.ok{background:var(--ok-bg)}.fb.no{background:var(--bad-bg)}
.letters{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0}.letters button{min-width:44px;min-height:44px;border-radius:12px;background:#fff;border:2px solid var(--line);font-size:20px;font-weight:700}
.letters button:disabled{opacity:.3}
.slot{min-height:48px;border-radius:12px;border:2px dashed #d9cfc4;display:flex;align-items:center;padding:0 12px;font-size:22px;letter-spacing:4px;font-weight:700;background:#fff}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:10px 0}
.stat{background:#faf6f1;border-radius:14px;padding:10px;text-align:center}.stat b{display:block;font-size:20px}.stat small{color:var(--muted);font-size:12px}
.tip{background:#fff3e8;border-radius:12px;padding:10px 12px;font-size:14px}
.chipl{display:flex;gap:6px;flex-wrap:wrap;margin:6px 0}.chipl span{background:#f3eee8;border-radius:99px;padding:2px 10px;font-size:13px}
.share{margin-top:12px;border-radius:18px;padding:18px;background:linear-gradient(135deg,#ff8a3d,#ffb36b);color:#fff;text-align:center}
.share b{font-size:20px;display:block}
#redeemForm{display:flex;gap:8px;margin-top:10px}#codeInput{text-transform:uppercase;letter-spacing:1px}
.msg{min-height:22px;font-size:14px;margin:8px 0 0}.msg.ok{color:var(--ok)}.msg.no{color:var(--bad)}
.owned{list-style:none;padding:0;margin:6px 0 0;font-size:14px;color:var(--muted)}
.foot{font-size:12px;color:var(--muted);padding:8px 4px;text-align:center}
.toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom));transform:translateX(-50%) translateY(20px);background:#2b2a33;color:#fff;padding:10px 16px;border-radius:999px;font-size:14px;opacity:0;pointer-events:none;transition:.25s;max-width:90vw;text-align:center;z-index:50}
.toast.show{opacity:1;transform:translateX(-50%)}
code{background:#f3eee8;padding:1px 6px;border-radius:6px;font-size:13px}
.flash{animation:flash 1.2s}@keyframes flash{0%,60%{box-shadow:0 0 0 3px var(--pri)}100%{box-shadow:0 2px 0 var(--line)}}