:root {
  --ink: #20242b;
  --ink-2: #2a3038;
  --parchment: #f3ede2;
  --vermilion: #c0392b;
  --gold: #c9a227;
  --mute: #8a8478;
  --line: rgba(192, 57, 43, 0.28);
  --display: "Cinzel", "Noto Serif SC", serif;
  --serif: "Noto Serif SC", "Songti SC", serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
section[id] { scroll-margin-top: 72px; }
body {
  margin: 0;
  color: var(--parchment);
  background: var(--ink);
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.75;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.app-link { color: var(--gold); text-decoration: underline; text-underline-offset: 3px; }
button { font-family: inherit; cursor: pointer; }
code {
  font-family: var(--mono);
  font-size: 0.9em;
  color: var(--gold);
  background: rgba(201, 162, 39, 0.12);
  padding: 0.05em 0.35em;
}

.fiber {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 25;
  opacity: 0.16;
  background-image: url("images/texture.webp");
  background-size: 480px auto;
  mix-blend-mode: multiply;
}
.skip { position: absolute; left: -999px; }
.skip:focus { left: 12px; top: 12px; z-index: 80; background: var(--vermilion); color: #fff; padding: 8px 12px; }

.stage-bar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 28px;
  background: rgba(32, 36, 43, 0.92);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: 0.12em;
}
.brand small {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--mute);
  font-weight: 400;
}
.seal-mark {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  background: var(--vermilion);
  color: var(--parchment);
  font-family: var(--serif);
  font-size: 16px;
}
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--vermilion);
  color: var(--vermilion);
  padding: 6px 12px;
  font-family: var(--mono);
}
.nav-links { display: flex; gap: 16px; font-size: 14px; }
.nav-links a { color: var(--mute); }
.nav-links a.is-active,
.nav-links a:hover { color: var(--gold); }
.nav-links .live {
  background: var(--vermilion);
  color: #fff;
  padding: 6px 12px;
}

.stage {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 100vh;
}
.stage-copy { padding: 12vh 6vw 8vh; }
.hang { margin: 0; position: relative; min-height: 100vh; }
.hang img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hang figcaption {
  position: absolute;
  left: 24px;
  bottom: 24px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--gold);
}

.kicker {
  font-family: var(--mono);
  letter-spacing: 0.2em;
  font-size: 11px;
  color: var(--gold);
  margin: 0 0 12px;
}
h1, h2, h3 { font-family: var(--display); font-weight: 700; letter-spacing: 0.08em; line-height: 1.1; margin: 0 0 14px; }
h1 { font-size: clamp(40px, 6vw, 78px); }
h2 { font-size: clamp(26px, 3.4vw, 42px); letter-spacing: 0.06em; }
h3 { font-family: var(--serif); letter-spacing: 0; font-size: 22px; }
.lead, .quiet { max-width: 42em; color: #c9c2b4; }

.seal-box {
  margin: 24px 0;
  padding: 18px 20px 18px 22px;
  border-left: 8px solid var(--vermilion);
  background: rgba(243, 237, 226, 0.06);
  max-width: 34em;
  writing-mode: horizontal-tb;
}
.banner-title { font-family: var(--serif); font-size: 22px; margin: 0 0 8px; }
.seal-state { min-height: 4em; font-size: 14px; color: #c9c2b4; }
.seal-box.is-stamped { background: rgba(192, 57, 43, 0.16); }
.cta { display: flex; flex-wrap: wrap; gap: 10px; }
.btn {
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  border: 1px solid currentColor;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
}
.btn.fill { background: var(--vermilion); color: #fff; border-color: var(--vermilion); }
.btn.ghost { color: var(--parchment); }

.scroll-wrap { width: min(1100px, calc(100% - 40px)); margin: 0 auto; padding: 80px 0; }
.war { background: var(--ink-2); }

.need-banners {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 32px;
}
.need-banners article {
  padding: 28px 22px;
  background: linear-gradient(180deg, rgba(192, 57, 43, 0.12), transparent 40%);
  border: 1px solid var(--line);
  min-height: 280px;
  writing-mode: horizontal-tb;
  box-shadow: inset 0 12px 0 var(--vermilion);
}
.need-banners ul { margin: 0; padding-left: 1.1em; }
.need-banners li { margin: 0.4em 0; }

.act {
  display: grid;
  grid-template-columns: 56px 1fr 0.9fr;
  gap: 22px;
  align-items: center;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}
.act.reverse { grid-template-columns: 56px 0.9fr 1fr; }
.act.reverse > div { order: 3; }
.n {
  font-family: var(--display);
  color: var(--vermilion);
  font-size: 20px;
  writing-mode: vertical-rl;
  letter-spacing: 0.2em;
}
.act img { width: 100%; height: 210px; object-fit: cover; }
.act figcaption { font-family: var(--mono); font-size: 12px; color: var(--gold); margin-top: 8px; }

.modules {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 28px;
}
.modules article {
  padding: 20px 14px;
  border-top: 10px solid var(--vermilion);
  background: rgba(243, 237, 226, 0.05);
}
.roles-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.roles-4 article { padding: 16px; border-left: 3px solid var(--gold); }
.roles-4 p, .modules p { color: #c9c2b4; }

.bound { list-style: none; margin: 0; padding: 0; counter-reset: r; }
.bound li {
  counter-increment: r;
  padding: 12px 0 12px 64px;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.bound li::before {
  content: "榜-" counter(r, decimal-leading-zero);
  position: absolute;
  left: 0;
  font-family: var(--mono);
  color: var(--vermilion);
  font-size: 12px;
}

.io { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.io div { padding: 22px; border: 1px solid var(--line); }
.io ul { margin: 0; padding-left: 1.1em; }

footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 6vw 40px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--mute);
}

@media (max-width: 980px) {
  .stage, .need-banners, .act, .act.reverse, .modules, .roles-4, .io, footer { grid-template-columns: 1fr; }
  .act.reverse > div { order: 0; }
  .hang { min-height: 48vh; }
  .hang img { position: relative; height: 48vh; }
  .hang figcaption { position: static; padding: 8px 6vw 0; }
  .n { writing-mode: horizontal-tb; }
  .nav-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 56px;
    right: 12px;
    left: 12px;
    flex-direction: column;
    background: var(--ink-2);
    border: 1px solid var(--line);
    padding: 12px;
  }
  .nav-links.open { display: flex; }
  h1 { font-size: clamp(32px, 11vw, 48px); }
}