:root {
  --night: #10141f;
  --night-2: #171d2c;
  --ink: #e8e4d8;
  --muted: #8d94a5;
  --paper: #f3ecdb;
  --paper-ink: #26221a;
  --gold: #c9a227;
  --gold-dim: #8a7422;
  --serif: Georgia, 'Times New Roman', serif;
  --sans: ui-sans-serif, system-ui, sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0; min-height: 100vh;
  background: radial-gradient(ellipse at 50% -10%, #1c2334 0%, var(--night) 55%);
  color: var(--ink); font-family: var(--sans); line-height: 1.6;
  display: flex; flex-direction: column; align-items: center;
}
header { text-align: center; padding: 3rem 1rem 1rem; }
.home { color: var(--muted); text-decoration: none; font-size: .85rem; letter-spacing: .08em; }
h1 { font-family: var(--serif); font-weight: 400; font-size: 3rem; margin: .5rem 0 0; letter-spacing: .04em; }
.tag { color: var(--gold); font-family: var(--serif); font-style: italic; margin: .2rem 0 0; }
main { width: min(60rem, 94vw); flex: 1; }
.screen { padding: 2rem 0; animation: settle .5s ease; }
@keyframes settle { from { opacity: 0; transform: translateY(6px); } }
label { display: block; font-family: var(--serif); font-size: 1.3rem; margin-bottom: .8rem; }
textarea {
  width: 100%; background: var(--night-2); color: var(--ink);
  border: 1px solid #2b3247; border-radius: 8px; padding: 1rem;
  font: 1.05rem/1.5 var(--serif); resize: vertical;
}
textarea:focus { outline: 1px solid var(--gold-dim); }
.row { display: flex; gap: .8rem; margin-top: 1.2rem; flex-wrap: wrap; }
button {
  background: none; border: 1px solid #39415a; color: var(--ink);
  border-radius: 8px; padding: .7rem 1.3rem; font-size: 1rem; cursor: pointer;
  transition: border-color .3s, background .3s;
}
button:hover { border-color: var(--gold-dim); }
button.primary { border-color: var(--gold-dim); color: var(--gold); }
button.primary:hover { background: rgba(201, 162, 39, .08); }
.hint { color: var(--muted); font-size: .9rem; }
.echo { color: var(--muted); font-family: var(--serif); font-style: italic; text-align: center; min-height: 1.5em; }
canvas { display: block; width: 100%; height: auto; touch-action: none; border-radius: 10px; }
#cast-hud { display: flex; justify-content: space-between; align-items: center; }
#cast-instruction { color: var(--gold); font-family: var(--serif); }
#line-dots { list-style: none; display: flex; gap: .5rem; padding: 0; }
#line-dots li { width: 2.2rem; text-align: center; border-bottom: 2px solid #39415a; color: var(--muted); font-size: .8rem; }
#line-dots li.done { border-color: var(--gold); color: var(--ink); }
.paper, #result {
  background: var(--paper); color: var(--paper-ink);
  border-radius: 10px; padding: 2rem 2.4rem; font-family: var(--serif);
}
#result h2 { font-weight: 400; margin-top: 0; }
#result .figures { display: flex; gap: 3rem; align-items: center; flex-wrap: wrap; }
.hexfig { display: flex; flex-direction: column-reverse; gap: 7px; }
.hexfig .yang, .hexfig .yin { height: 9px; width: 110px; display: flex; gap: 18px; }
.hexfig .yang i, .hexfig .yin i { background: var(--paper-ink); flex: 1; border-radius: 2px; }
.hexfig .moving i { background: var(--gold-dim); }
.arrow { font-size: 2rem; color: var(--gold-dim); }
.linetext { border-left: 3px solid var(--gold-dim); padding-left: 1rem; margin: 1rem 0; }
.glyphname { font-size: 1.05rem; margin-top: .6rem; }
footer { width: min(60rem, 94vw); display: flex; justify-content: space-between; align-items: center; padding: 2rem 0; color: var(--muted); font-size: .85rem; flex-wrap: wrap; gap: 1rem; }
footer a { color: var(--muted); }
.sound { display: flex; gap: .6rem; align-items: center; }
input[type='range'] { accent-color: var(--gold-dim); width: 110px; }
dialog { background: var(--night-2); color: var(--ink); border: 1px solid #39415a; border-radius: 10px; padding: 2rem; max-width: 26rem; }
dialog::backdrop { background: rgba(6, 8, 14, .7); }
dialog input { width: 100%; padding: .7rem; background: var(--night); border: 1px solid #2b3247; color: var(--ink); border-radius: 6px; }
@media (max-width: 600px) { h1 { font-size: 2.2rem; } #result { padding: 1.2rem 1.4rem; } }