*,*::before,*::after{box-sizing:border-box}
:root{
  --bg:#fff;--fg:#111318;--muted:#6b7280;--line:#e5e7eb;
  --pane:#fafafa;--btn:#f3f4f6;--btn-a:#e2e5ea;--accent:#2563eb;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#0b0d10;--fg:#f3f4f6;--muted:#9aa3af;--line:#22262c;
        --pane:#12151a;--btn:#171b21;--btn-a:#252b33;--accent:#60a5fa}
}
html,body{height:100%;margin:0;padding:0}
body{background:var(--bg);color:var(--fg);
  font:400 16px/1.4 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Apple SD Gothic Neo","Noto Sans KR",sans-serif;
  overflow:hidden;overscroll-behavior:none;-webkit-tap-highlight-color:transparent;-webkit-text-size-adjust:100%}
.screen{display:flex;flex-direction:column;height:100dvh}
.pane{flex:1 1 50%;display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:16px 20px;text-align:center;min-height:0;overflow:hidden}
.pane.meaning{background:var(--pane);border-top:1px solid var(--line)}
#word{font-size:clamp(2rem,11vw,4.5rem);font-weight:700;line-height:1.05;letter-spacing:-.02em;
  word-break:break-word;margin:0}
#sub{margin-top:10px;font-size:clamp(.8rem,3.4vw,1rem);color:var(--muted);display:flex;gap:10px;
  justify-content:center;flex-wrap:wrap}
#sub em{font-style:italic}
#ko{font-size:clamp(1.35rem,6.2vw,2.4rem);font-weight:600;line-height:1.3;margin:0;word-break:keep-all}
#en{margin:12px 0 0;font-size:clamp(.85rem,3.6vw,1.05rem);color:var(--muted);line-height:1.45;max-width:34ch}
#ex{margin:10px 0 0;font-size:clamp(.75rem,3.1vw,.9rem);color:var(--muted);opacity:.75;line-height:1.4;
  max-width:38ch;font-style:italic}
#en:empty,#ex:empty,#sub:empty{display:none}
.bar{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);
  border-top:1px solid var(--line);flex:0 0 auto;padding-bottom:env(safe-area-inset-bottom)}
.bar button{height:2cm;border:0;background:var(--btn);color:var(--fg);font-size:1.6rem;font-weight:600;
  cursor:pointer;touch-action:manipulation;display:flex;align-items:center;justify-content:center;
  user-select:none;font-family:inherit}
.bar button:active{background:var(--btn-a)}
.bar button[disabled]{opacity:.3}
#count{position:fixed;top:calc(8px + env(safe-area-inset-top));left:50%;transform:translateX(-50%);
  font-size:.75rem;color:var(--muted);font-variant-numeric:tabular-nums}
#bar-progress{position:fixed;top:0;left:0;height:2px;background:var(--accent);width:0;transition:width .1s linear}
#top{position:relative;cursor:pointer}
.pane.meaning{cursor:pointer}
#round{position:fixed;top:calc(6px + env(safe-area-inset-top));right:14px;font-size:.7rem;
  color:var(--muted);letter-spacing:.16em;opacity:.65}
#tap{margin:0;font-size:.9rem;color:var(--muted);opacity:.5;letter-spacing:.01em}
.pane.meaning.hidden-meaning{background:repeating-linear-gradient(
  -45deg,var(--pane),var(--pane) 9px,var(--btn) 9px,var(--btn) 18px)}
#star{position:absolute;top:calc(10px + env(safe-area-inset-top));right:18px;font-size:1.25rem;color:var(--accent)}
#acct{position:fixed;top:calc(6px + env(safe-area-inset-top));left:14px;color:var(--muted);
  text-decoration:none;font-size:1.4rem;line-height:1;padding:4px 8px;opacity:.5}