:root {
  --bg: #fdfdfd;
  --panel: #ffffff;
  --ink: #222;
  --subtle: #666;
  --accent: #3366cc;
  --radius: 12px;
  --gap: 16px;
  --maxw: 1100px;
}

* { box-sizing: border-box; }
html, body { height: 100%; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
}

header {
  max-width: var(--maxw);
  margin: 40px auto 24px;
  padding: 24px;
  background: var(--panel);
  border: 1px solid #ddd;
  border-radius: var(--radius);
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

h1 {
  margin: 0 0 6px;
  font-size: clamp(1.4rem, 2.5vw, 2rem);
}

.subtitle {
  color: var(--subtle);
  margin: 0;
  font-size: .98rem;
}

main {
  max-width: var(--maxw);
  margin: 0 auto 80px;
  padding: 0 16px 16px;
  display: grid;
  gap: 28px;
}

section.part {
  background: var(--panel);
  border: 1px solid #ddd;
  border-radius: var(--radius);
  padding: clamp(16px, 2.5vw, 28px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.part h2 {
  margin: 0 0 6px;
  font-size: clamp(1.2rem, 2vw, 1.5rem);
}

.part .desc {
  margin: 0 0 18px;
  color: var(--subtle);
  font-size: .98rem;
}

.pair {
  display: grid;
  gap: var(--gap);
}
@media (min-width: 780px) {
  .pair { grid-template-columns: 1fr 1fr; }
}

figure {
  margin: 0;
  border: 1px solid #ddd;
  border-radius: 14px;
  overflow: hidden;
  background: #f8f8f8;
}

figure img {
  display: block;
  height: auto;
  max-height: 70vh;
  object-fit: cover;
  aspect-ratio: 4/5;
}

figcaption {
  padding: 10px 12px;
  font-size: .95rem;
  color: var(--subtle);
  border-top: 1px solid #eee;
  background: rgba(255,255,255,0.8);
  backdrop-filter: blur(4px);
}

.gif-wrap { display: grid; gap: var(--gap); }
.gif-note { margin: 0; color: var(--subtle); font-size: .95rem; }

.gif-box {
  display: grid;
  place-items: center;
  background: #f8f8f8;
  border: 1px solid #ddd;
  border-radius: 14px;
  overflow: hidden;
  padding: 10px;
}

.gif-box img {
  max-width: 920px;
  height: auto;
  max-height: 70vh;
  display: block;
}

@media print {
  body { background: #fff; color: #000; }
  header, section.part { box-shadow: none; border-color: #ccc; }
  figcaption, .subtitle, .desc, .gif-note { color: #333 !important; }
}