:root{color-scheme:light;--ink:#193831;--muted:#62776f;--paper:#f6f5f0;--green:#22664f;--line:#dce3da;--soft:#e8eee6}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;-webkit-tap-highlight-color:transparent}main{width:min(100%,480px);margin:auto;padding:calc(24px + env(safe-area-inset-top)) 24px calc(24px + env(safe-area-inset-bottom))}header{margin-bottom:24px}.eyebrow{font-size:13px;letter-spacing:2px;font-weight:700}.badge{float:right;background:var(--soft);border-radius:20px;padding:5px 10px;font-size:11px}h1{font-size:34px;letter-spacing:-1px;line-height:1.2;margin:22px 0 10px}header p{font-size:15px;color:var(--muted);margin:0}.word-card{border:1px solid var(--line);border-radius:28px;background:#fff;padding:22px 22px 28px;text-align:center;box-shadow:0 10px 32px #19383106}.word-top{display:flex;justify-content:space-between;color:var(--muted);font-size:13px}h2{font-size:64px;font-weight:650;letter-spacing:-2px;line-height:1.2;margin:32px 0 14px;overflow-wrap:anywhere}.meaning{font-size:25px;margin:0 0 28px;min-height:34px}.listening{font-size:12px;color:var(--muted)}button,select,.file-button{font:inherit;touch-action:manipulation}button,.file-button{cursor:pointer;border:1px solid var(--line);background:#fff;border-radius:16px;padding:15px 12px;min-height:52px;color:var(--ink);font-weight:600}button:focus-visible,select:focus-visible,input:focus-visible,.file-button:focus-within{outline:3px solid #ca941f;outline-offset:3px}button:disabled{opacity:.55;cursor:default}.primary{display:block;width:100%;height:70px;background:var(--green);border-color:var(--green);color:white;font-size:22px;letter-spacing:2px}.difficult{width:100%;margin-top:12px;background:transparent;font-size:16px}.difficult:disabled{opacity:1;color:var(--muted)}.timeline{margin:22px 2px 20px}input[type=range]{width:100%;margin:0;min-height:32px;accent-color:var(--green)}.time-row{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums}.status{font-size:13px;line-height:1.7;color:var(--muted);min-height:44px;margin:14px 2px 20px}.settings{border-top:1px solid var(--line);padding-top:22px;margin-top:22px}.setting-label{display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:12px}h3{font-size:15px;font-weight:650;margin:0}.setting-label span{color:var(--muted);font-size:12px}.repeat-buttons{display:flex;gap:8px}.repeat-buttons button{flex:1;font-size:17px}.repeat-buttons button[aria-pressed=true]{background:var(--soft);border:2px solid var(--green);padding:14px 11px;color:var(--green)}.hint{font-size:12px;color:var(--muted);line-height:1.8;margin:10px 0 20px}select{width:100%;min-height:52px;padding:12px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink);font-size:16px}.secondary{width:100%;font-size:14px}.backup{display:flex;gap:12px}.backup>*{flex:1;text-align:center;font-size:14px}.file-button{display:flex;position:relative;align-items:center;justify-content:center;overflow:hidden}.file-button input{position:absolute;inset:0;opacity:0;width:100%;cursor:pointer}footer{display:flex;justify-content:space-between;gap:8px;padding-top:10px;color:var(--muted);font-size:11px}a{color:var(--green)}@media(max-width:360px){main{padding-left:16px;padding-right:16px}h1{font-size:30px}h2{font-size:56px}.badge{font-size:10px}}@media(prefers-reduced-motion:no-preference){button{transition:background .15s,color .15s}}

button{-webkit-tap-highlight-color:transparent;transition:background .15s,color .15s,transform .12s}
button:active:not(:disabled){transform:scale(.96);background:var(--soft)}
.primary:active:not(:disabled){background:#1b5440}
button.flash{background:var(--green);color:#fff;border-color:var(--green)}

main{padding-left:max(24px,env(safe-area-inset-left));padding-right:max(24px,env(safe-area-inset-right))}
@media(max-width:360px){main{padding-left:max(16px,env(safe-area-inset-left));padding-right:max(16px,env(safe-area-inset-right))}}
#remembered{font-size:16px;font-weight:700}