:root {
  --paper: #f1e3c6;
  --card: #fcf1da;
  --ink: #3a2f22;
  --ink-soft: #7a6a52;
  --accent: #b0452b;
  --accent-dark: #8c3520;
  --line: #d9c8a3;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "Noto Serif JP", serif;
  line-height: 1.7;
  padding-bottom: 56px;
}
.wrap { max-width: 780px; margin: 0 auto; padding: 0 16px; }
.wide { max-width: 1120px; }

header { text-align: center; padding: 36px 16px 20px; }
header .en { font-size: 11px; letter-spacing: 0.35em; color: var(--ink-soft); }
header h1 { font-size: clamp(21px, 4.6vw, 30px); letter-spacing: 0.16em; font-weight: 600; margin: 6px 0 8px; }
header .lead { font-size: 14px; color: var(--ink-soft); letter-spacing: 0.06em; }
header .rule { width: 72px; height: 1px; background: var(--ink-soft); margin: 16px auto 0; opacity: 0.5; }

/* ---- buttons ---- */
.btn {
  font: inherit; letter-spacing: 0.1em; border: none; border-radius: 999px;
  cursor: pointer; padding: 12px 26px; display: inline-block;
}
.btn-primary { background: var(--accent); color: #fdf6e6; font-size: 16px; box-shadow: 0 3px 0 var(--accent-dark); }
.btn-primary:hover:not(:disabled) { background: var(--accent-dark); }
.btn-primary:active:not(:disabled) { transform: translateY(2px); box-shadow: none; }
.btn-primary:disabled { background: #c4b49a; box-shadow: 0 3px 0 #ab9c84; cursor: not-allowed; }
.btn-outline {
  background: none; color: var(--ink); font-size: 15px;
  border: 1px solid var(--ink-soft); padding: 11px 24px;
}
.btn-outline:hover:not(:disabled) { background: rgba(122, 106, 82, 0.08); }
.btn-outline:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-ghost {
  background: none; color: var(--ink-soft); font-size: 13px;
  text-decoration: underline; text-underline-offset: 4px; padding: 8px 12px;
}
.btn-ghost:hover { color: var(--ink); }
.center { text-align: center; }
.stack { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.row { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }

/* ---- catalog grid ---- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 14px; }
@media (min-width: 600px) { .grid { grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 18px; } }
.item {
  background: var(--card); border: 1px solid var(--line); border-radius: 6px;
  overflow: hidden; text-align: center;
}
.item img { width: 100%; height: auto; aspect-ratio: 1 / 1; display: block; background: var(--card); }
.item .meta { padding: 8px 6px 12px; border-top: 1px dashed var(--line); }
.item .no {
  font-size: 20px; font-weight: 700; letter-spacing: 0.06em; color: var(--accent); line-height: 1.2;
}
.item .name { font-size: 14px; letter-spacing: 0.06em; margin-top: 2px; }

/* ---- misc ---- */
.note { font-size: 13px; color: var(--ink-soft); text-align: center; margin-top: 16px; }
.error {
  background: #f6dcd2; border: 1px solid var(--accent); color: var(--accent-dark);
  border-radius: 6px; padding: 10px 14px; font-size: 13px; text-align: center; margin-bottom: 16px;
}
.footlinks { text-align: center; margin-top: 32px; }
.screen { display: none; }
.screen.active { display: block; }