/* 気配斬り 遊び方・ライセンス共通スタイル（江戸・墨絵） */
:root {
  --bg: #0b0d16;
  --bg2: #12162a;
  --ink: #ece6d6;
  --ink-dim: #b3aca0;
  --shu: #d9412b;
  --shu-soft: #e8654f;
  --line: rgba(236, 230, 214, 0.16);
  --card: rgba(255, 255, 255, 0.04);
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  color: var(--ink);
  font-family: "Zen Old Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: 17px;
  line-height: 1.9;
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(60, 70, 130, 0.25), transparent 55%),
    radial-gradient(ellipse at 90% 100%, rgba(217, 65, 43, 0.08), transparent 50%),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.018) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.012) 0 1px, transparent 1px 5px);
  background-attachment: fixed;
  overflow-x: hidden;
}
a { color: var(--shu-soft); text-underline-offset: 3px; }
a:hover { color: #ff8a73; }

.site-header {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px 16px; border-bottom: 1px solid var(--line);
  background: rgba(8, 10, 18, 0.7); position: sticky; top: 0; z-index: 5;
  backdrop-filter: blur(6px);
}
.back {
  color: var(--ink); text-decoration: none; font-size: 15px;
  border: 1px solid var(--line); padding: 6px 12px; border-radius: 4px; white-space: nowrap;
}
.back:hover { border-color: var(--shu); color: var(--shu-soft); }
.site-title {
  font-family: "Yuji Syuku", serif; font-size: 22px; letter-spacing: 0.2em; margin: 0;
}
.site-title::before {
  content: ""; display: inline-block; width: 10px; height: 10px; border-radius: 50%;
  background: var(--shu); margin-right: 8px; box-shadow: 0 0 10px var(--shu);
}

main { max-width: 820px; margin: 0 auto; padding: 32px 16px 56px; }
h1, h2, h3 { font-family: "Yuji Syuku", serif; font-weight: 400; line-height: 1.4; }
h1 { font-size: 34px; letter-spacing: 0.15em; margin: 0 0 8px; }
.lead { color: var(--ink-dim); margin: 0 0 28px; }
h2 {
  font-size: 25px; margin: 44px 0 14px; padding-left: 14px;
  border-left: 4px solid var(--shu); letter-spacing: 0.08em;
}
h3 { font-size: 19px; margin: 24px 0 6px; color: var(--shu-soft); }
p { margin: 0 0 14px; }
ul, ol { padding-left: 1.4em; margin: 0 0 14px; }
li { margin-bottom: 6px; }
b, strong { color: #fff; font-weight: 700; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 6px;
  padding: 16px 18px; margin: 0 0 16px;
}
.note {
  border-left: 3px solid var(--shu); background: rgba(217, 65, 43, 0.08);
  padding: 10px 14px; margin: 0 0 16px; border-radius: 0 6px 6px 0;
}
.table-wrap { overflow-x: auto; margin: 0 0 16px; }
table { border-collapse: collapse; width: 100%; min-width: 300px; }
th, td { border: 1px solid var(--line); padding: 8px 12px; text-align: left; vertical-align: top; }
th { background: rgba(255, 255, 255, 0.06); font-weight: 700; white-space: nowrap; }
kbd {
  font-family: inherit; border: 1px solid var(--ink-dim); border-bottom-width: 2px;
  border-radius: 4px; padding: 0 7px; background: rgba(255, 255, 255, 0.07); white-space: nowrap;
}
.bar { display: inline-block; height: 8px; background: var(--shu); border-radius: 4px; vertical-align: middle; }
pre.licence {
  white-space: pre-wrap; word-break: break-word; font-family: ui-monospace, Consolas, monospace;
  font-size: 12.5px; line-height: 1.6; background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--line); border-radius: 6px; padding: 14px; margin: 0 0 16px; overflow-x: auto;
}

.site-footer {
  border-top: 1px solid var(--line); padding: 22px 16px 34px; text-align: center;
  color: var(--ink-dim); font-size: 15px;
}
.site-footer nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 22px; }

@media (max-width: 560px) {
  body { font-size: 16px; }
  h1 { font-size: 27px; }
  h2 { font-size: 21px; }
  .site-title { font-size: 18px; letter-spacing: 0.1em; }
  th, td { padding: 6px 8px; }
}