:root {
  color-scheme: dark;
  --ink: #142228;
  --paper: #f0e4ca;
  --muted: #b9c4b9;
  --warm: #d6ae77;
  --line: rgba(220, 226, 196, .19);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
body {
  min-width: 240px;
  margin: 0;
  color: var(--paper);
  background: radial-gradient(ellipse at 17% -7%, #2a3d3d 0, transparent 51rem), var(--ink);
}
main {
  width: min(1120px, 92vw);
  margin: 0 auto;
  padding: clamp(27px, 5.4vw, 76px) 0 45px;
}
header { margin-bottom: clamp(20px, 3vw, 34px); }
.rule {
  width: 48px;
  height: 2px;
  margin-bottom: 16px;
  background: var(--warm);
}
h1 {
  margin: 0;
  font-family: "KaiTi", "STKaiti", "Songti SC", "Noto Serif CJK SC", serif;
  font-size: clamp(42px, 7.1vw, 84px);
  font-weight: 500;
  letter-spacing: .12em;
  line-height: 1.12;
}
header p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: clamp(14px, 2.3vw, 18px);
  line-height: 1.7;
}
.screen {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: #0b1419;
  box-shadow: 0 24px 68px #08141766;
}
video {
  display: block;
  width: 100%;
  aspect-ratio: 16/9;
  height: auto;
  background: #0b1419;
}
#start-film {
  position: absolute;
  left: clamp(12px, 3vw, 33px);
  bottom: clamp(39px, 5.5vw, 65px);
  display: inline-flex;
  align-items: center;
  gap: 11px;
  min-height: 44px;
  padding: 0 17px;
  border: 1px solid #e5c89b;
  border-radius: 5px;
  color: #1a272a;
  background: #e5c89b;
  cursor: pointer;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
}
#start-film[hidden] { display: none; }
#start-film:hover { background: #f4dcb3; }
.triangle {
  width: 0;
  height: 0;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 8px solid currentColor;
}
a { color: var(--warm); text-underline-offset: 4px; }
:focus-visible { outline: 3px solid #f1cb92; outline-offset: 3px; }
.details {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: .45rem 1.2rem;
  padding: 13px 0 21px;
  color: var(--muted);
  font-size: 14px;
}
.details p { margin: 0; }
.help { color: #edd1a9; font-size: 14px; line-height: 1.6; }
.help:empty { display: none; }
.credits {
  border-top: 1px solid var(--line);
  padding-top: 14px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}
summary { width: fit-content; cursor: pointer; color: var(--paper); }
dl { margin: 14px 0 0; }
dl div { display: grid; grid-template-columns: 3.5rem 1fr; gap: 12px; margin-bottom: 8px; }
dt { color: var(--paper); }
dd { margin: 0; overflow-wrap: anywhere; }
@media (max-width: 480px) {
  .rule { margin-bottom: 13px; }
  .screen { border-radius: 5px; }
  .details { font-size: 13px; }
  #start-film { bottom: 36px; }
}