.launch-shell {
  display: grid;
  grid-template-columns: minmax(340px, .84fr) minmax(500px, 1.16fr);
  height: calc(100dvh - 28px);
  min-height: 720px;
}
.intro-left, .intro-right { min-width: 0; padding: .95rem; }
.intro-left {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: .72rem;
  border-right: 1px solid var(--line);
}
.scene-frame {
  position: relative;
  min-height: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: #050b14;
}
.scene-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 60%, rgba(0,0,0,.36));
}
.scene-frame img { width: 100%; height: 100%; object-fit: cover; display: block; aspect-ratio: 4 / 3; }
.scene-caption {
  position: absolute;
  z-index: 1;
  left: .85rem;
  bottom: .75rem;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(3, 8, 15, .72);
  backdrop-filter: blur(14px);
  border-radius: 999px;
  padding: .38rem .65rem;
  color: var(--muted);
  font-size: .78rem;
}
.ship-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(7,16,29,.8);
  padding: .72rem .85rem;
  display: grid;
  gap: .42rem;
}
.ship-card__row { display: flex; justify-content: space-between; gap: 1rem; color: var(--muted); font-size: .9rem; }
.ship-card__row strong { color: var(--text); text-align: right; }
.intro-right {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto auto;
  gap: .72rem;
  overflow: hidden;
}
.intro-toolbar { display: flex; justify-content: space-between; align-items: start; gap: 1rem; }
.seed-box { display: grid; grid-template-columns: auto auto auto; gap: .45rem; align-items: center; }
.seed-label { grid-column: 1 / -1; color: var(--muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .14em; }
.seed-box input {
  width: min(220px, 32vw);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(0,0,0,.25);
  color: var(--text);
  padding: .62rem .74rem;
}
.story-card { min-height: 0; overflow: auto; padding-right: .35rem; scrollbar-width: thin; }
.story-card h1 { margin: .2rem 0 .7rem; font-size: clamp(1.75rem, 4vw, 3.15rem); line-height: 1; }
.story-text p { color: #d6e5f8; line-height: 1.48; margin: 0 0 .52rem; }
.choice-prelude {
  border-left: 3px solid var(--accent);
  background: rgba(104,215,255,.07);
  padding: .68rem .85rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: #d7f5ff;
  margin-bottom: .65rem;
  line-height: 1.35;
}
.choice-list { display: grid; gap: .5rem; overflow: auto; padding-right: .25rem; scrollbar-width: thin; }
.choice-button { text-align: left; display: grid; gap: .22rem; padding: .68rem .82rem; }
.choice-button strong { font-size: .94rem; }
.choice-button span { color: var(--muted); line-height: 1.27; font-size: .92rem; }
.choice-button em { color: var(--accent); font-style: normal; font-size: .76rem; }
.progress-shell {
  height: 8px;
  border-radius: 999px;
  background: rgba(255,255,255,.08);
  overflow: hidden;
}
.progress-fill { height: 100%; width: 0%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); }
.result-bonus-card {
  border: 1px solid rgba(104,215,255,.24);
  border-radius: var(--radius-lg);
  background: rgba(8, 18, 32, .84);
  padding: .85rem;
  display: grid;
  gap: .55rem;
}
.result-bonus-card h2 { margin: .15rem 0 0; font-size: 1.2rem; }
.result-bonus-card p { color: var(--muted); margin: 0; line-height: 1.42; }
.result-bonus-list { display: flex; flex-wrap: wrap; gap: .45rem; }
@media (max-width: 1100px) {
  .launch-shell { grid-template-columns: minmax(300px, .75fr) minmax(440px, 1.25fr); }
  .intro-left, .intro-right { padding: .75rem; }
  .story-text p { font-size: .94rem; }
}
@media (max-width: 980px) {
  .launch-shell { grid-template-columns: 1fr; height: auto; min-height: 100dvh; overflow: visible; }
  .intro-left { border-right: 0; border-bottom: 1px solid var(--line); }
  .intro-right { overflow: visible; }
  .scene-frame { height: 42vh; min-height: 280px; }
  .seed-box { grid-template-columns: 1fr auto auto; width: 100%; }
  .seed-label { display: none; }
  .seed-box input { width: 100%; }
}