/* Cover-only styles keep the existing cinematic sequence intact. */
.start-screen {
  --cover-gold: #edcb91;
  display: block;
  place-items: normal;
  overflow: hidden;
  background: #0a1e2b;
  visibility: hidden;
  transition: opacity 700ms ease, visibility 700ms;
}
.start-screen.is-visible { visibility: visible; }
.start-screen.is-hidden { visibility: hidden; }
.cover-landscape, .cover-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.cover-landscape { object-fit: cover; object-position: 62% center; }
.is-visible .cover-landscape { animation: cover-approach 20s ease-out both; }
.cover-shade {
  background: linear-gradient(90deg, rgba(5, 23, 39, .94), rgba(7, 26, 42, .72) 37%, rgba(7, 26, 42, .10) 76%),
    linear-gradient(0deg, rgba(4, 19, 31, .94), transparent 28%, transparent 75%, rgba(7, 24, 39, .32));
}
.cover-brand {
  position: absolute;
  top: 6%;
  left: 6.5%;
  display: flex;
  gap: 14px;
  align-items: center;
  font-size: clamp(13px, 1.15vw, 19px);
  letter-spacing: .08em;
}
.cover-brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid #edcb9177;
  color: var(--cover-gold);
  font: 26px "KaiTi", serif;
}
.cover-brand small { display: block; margin-top: 8px; font: 9px/1.5 Georgia, serif; letter-spacing: .2em; color: #c4d1da; }
.cover-copy { position: relative; margin: max(160px, 23vh) 0 80px 9%; width: fit-content; max-width: 85%; }
.cover-kicker { color: var(--cover-gold); font-size: 13px; letter-spacing: .24em; margin: 0 0 22px; }
.cover-copy h1 { font-family: "Source Han Sans SC", "Microsoft YaHei", sans-serif; font-size: clamp(38px, 4.8vw, 86px); line-height: 1.3; letter-spacing: -.025em; margin: 0; font-weight: 700; }
.cover-copy h1 > span:first-child { font-size: .77em; font-weight: 400; color: #e5edf3; }
.cover-emphasis { color: var(--cover-gold); }
.cover-description { margin: 26px 0 32px; font-size: clamp(14px, 1.15vw, 18px); line-height: 1.95; color: #c8d5de; letter-spacing: .09em; }
.cover-copy .start-trigger { display: flex; align-items: center; justify-content: space-between; gap: 60px; padding: 18px 24px; border: 1px solid #f4d7a3; color: #152b3a; background: linear-gradient(110deg, #f5dfb7, #dcb374); border-radius: 3px; backdrop-filter: none; box-shadow: 0 8px 32px #0003; }
.cover-copy .start-trigger-cn { font-size: 20px; font-weight: 700; letter-spacing: .13em; }
.cover-arrow { font-size: 26px; transition: transform 200ms; }
.cover-copy .start-trigger:hover { transform: translateY(-2px); background: #f6dfb4; }
.cover-copy .start-trigger:hover .cover-arrow { transform: translateX(4px); }
.start-trigger:focus-visible, .top-controls button:focus-visible { outline: 3px solid #fff; outline-offset: 5px; }
.cover-sound-note { margin-top: 15px; color: #afc2d1; font-size: 12px; letter-spacing: .08em; }
.cover-footer { position: absolute; left: 6.5%; right: 6.5%; bottom: 5%; display: flex; align-items: center; justify-content: space-between; border-top: 1px solid #ffffff38; padding-top: 22px; }
.cover-footer p { margin: 0; display: flex; align-items: center; gap: 12px; font-size: 13px; color: #d4dfe7; }
.cover-footer p span { font: italic 16px Georgia, serif; color: var(--cover-gold); }
.cover-footer i { display: block; width: 36px; height: 1px; background: #d2dfeb66; margin: 0 8px; }
.cover-footer small { color: #b5c6d4; font-size: 12px; letter-spacing: .1em; }
.cover-skip-label { display: none; }
.opening-player:has(.start-screen.is-visible) .top-controls { z-index: 29; top: 6%; right: 6.5%; gap: 12px; }
.opening-player:has(.start-screen.is-visible) .skip-button { display: flex; justify-content: center; width: auto; gap: 8px; padding: 0 16px; }
.opening-player:has(.start-screen.is-visible) .cover-skip-label { display: inline; font-size: 12px; }
.is-visible .cover-copy { animation: cover-reveal 1s .15s both; }
@keyframes cover-approach { from { transform: scale(1); } to { transform: scale(1.045); } }
@keyframes cover-reveal { from { opacity: 0; transform: translateY(15px); } to { opacity: 1; transform: translateY(0); } }
@media (max-width: 700px) {
  .cover-brand { top: 5%; left: 7%; font-size: 12px; }
  .cover-brand small { font-size: 7px; letter-spacing: .1em; }
  .cover-brand-mark { width: 34px; height: 34px; }
  .opening-player:has(.start-screen.is-visible) .top-controls { top: 15%; right: 7%; gap: 8px; }
  .cover-copy { margin: max(190px, 29vh) 7% 140px; max-width: 86%; }
  .cover-copy h1 { font-size: clamp(32px, 8.8vw, 56px); }
  .cover-kicker { font-size: 11px; letter-spacing: .14em; margin-bottom: 18px; }
  .cover-description { margin: 20px 0 24px; }
  .cover-shade { background: linear-gradient(90deg, #071a2de6, #071a2d66), linear-gradient(0deg, #071a2d, transparent 65%); }
  .cover-footer { left: 7%; right: 7%; bottom: 4%; padding-top: 16px; }
  .cover-footer small { display: none; }
  .cover-footer p { gap: 7px; font-size: 11px; }
  .cover-footer i { width: 12px; margin: 0 3px; }
}
@media (max-height: 650px) {
  .start-screen { overflow-y: auto; overflow-x: hidden; }
  .cover-copy { margin-top: 125px; margin-bottom: 35px; }
  .cover-copy h1 { font-size: clamp(30px, 4vw, 52px); }
  .cover-description { margin: 15px 0 18px; }
  .cover-footer { position: relative; left: auto; right: auto; bottom: auto; margin: 0 7% 30px; }
}
@media (prefers-reduced-motion: reduce) {
  .is-visible .cover-landscape, .is-visible .cover-copy { animation: none; }
  .start-screen, .cover-copy .start-trigger, .cover-arrow { transition: none; }
}