/* 案A「森と真鍮」: ゲームの世界観(深緑と真鍮色、葉と枝の紋章。conductor D-037)に寄せる。
   本文の地は明るい生成り色にして、読みやすさを守る。フォントは端末に入っている物だけを使う */
:root {
  --bg: #f5f1e6; --surface: #fffdf6; --fg: #1e2820; --muted: #556050; --line: #ddd3bb;
  --brand: #1f3d2b; --brand-2: #2a5039; --brand-fg: #f1e9d2; --brand-muted: #c9d1bd;
  --brass: #b48c3c; --brass-text: #765716; --link: #255a3a; --link-hover: #765716;
  --code-bg: #ece6d4; --shadow: 0 1px 2px rgba(31, 61, 43, .08), 0 4px 14px rgba(31, 61, 43, .06);
  --serif: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "Noto Serif JP", "Noto Serif CJK JP", serif;
  --sans: system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", "Yu Gothic UI", "Meiryo", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111915; --surface: #17221c; --fg: #e6e1d2; --muted: #a7ae9f; --line: #2c3a31;
    --brand: #0b130e; --brand-2: #14211a; --brand-fg: #ede2c3; --brand-muted: #a9b3a2;
    --brass: #c9a75c; --brass-text: #d6b66f; --link: #9fd1ae; --link-hover: #e0c27c;
    --code-bg: #1f2c24; --shadow: none;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; font-family: var(--sans); font-size: 1.0625rem; line-height: 1.9;
  color: var(--fg); background: var(--bg); overflow-wrap: anywhere; line-break: strict;
}
a { color: var(--link); text-underline-offset: .2em; text-decoration-thickness: 1px; }
a:hover { color: var(--link-hover); }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--brass); outline-offset: 2px; border-radius: 2px; }
.inner, .wrap { max-width: 44rem; margin: 0 auto; padding: 0 1.25rem; }

/* 見出し帯 */
.site-header { background: var(--brand); color: var(--brand-fg); border-bottom: 3px solid var(--brass); }
.site-header .inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .5rem 1.5rem; padding-top: .9rem; padding-bottom: .8rem; }
.brand { display: flex; align-items: center; gap: .7rem; color: var(--brand-fg); text-decoration: none; }
.brand:hover { color: var(--brand-fg); }
.brand .emblem { width: 2.6rem; height: 2.6rem; color: var(--brass); flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.35; }
.site-name { font-family: var(--serif); font-weight: 700; font-size: 1.2rem; letter-spacing: .04em; }
.tagline { font-size: .78rem; color: var(--brand-muted); letter-spacing: .05em; }
.site-nav { display: flex; flex-wrap: wrap; gap: .1rem 1.2rem; font-size: .92rem; }
.site-nav a { color: var(--brand-fg); text-decoration: none; padding: .2rem 0; border-bottom: 2px solid transparent; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--brand-fg); border-bottom-color: var(--brass); }

/* トップの導入 */
.hero { background: linear-gradient(var(--brand-2), var(--brand)); color: var(--brand-fg); padding: 2.4rem 0 2.6rem; position: relative; overflow: hidden; }
.hero::after { content: ""; position: absolute; right: -3rem; bottom: -4rem; width: 16rem; height: 16rem; border: 1px solid var(--brass); border-radius: 50%; opacity: .25; }
.hero .inner { position: relative; z-index: 1; }
.hero-lead { font-family: var(--serif); font-size: clamp(1.35rem, 4.6vw, 1.85rem); line-height: 1.55; font-weight: 700; margin: 0 0 .6rem; letter-spacing: .02em; }
.hero-sub { color: var(--brand-muted); margin: 0 0 1.2rem; }
.button { display: inline-block; padding: .45rem 1.1rem; border: 1px solid var(--brass); border-radius: 999px; color: var(--brand-fg); text-decoration: none; font-size: .92rem; }
.button:hover { background: var(--brass); color: var(--brand); }

main { padding-bottom: 2.5rem; }
h1, h2, h3 { font-family: var(--serif); line-height: 1.45; letter-spacing: .02em; }
h1 { font-size: clamp(1.5rem, 5vw, 2rem); margin: 0 0 .6rem; }
h2 { font-size: 1.35rem; margin: 2.6rem 0 .9rem; padding-left: 1.1rem; position: relative; }
h2::before { content: ""; position: absolute; left: .05rem; top: .55em; width: .55rem; height: .55rem; background: var(--brass); transform: rotate(45deg); }
h3 { font-size: 1.12rem; margin: 2rem 0 .6rem; padding-bottom: .25rem; border-bottom: 1px dashed var(--line); }
.page-title { margin-top: 2rem; }

/* コーナー */
.corner-list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr)); gap: .8rem; }
.corner > a, .corner.is-soon { display: flex; flex-direction: column; gap: .2rem; height: 100%; padding: 1rem 1.1rem; background: var(--surface); border: 1px solid var(--line); border-top: 3px solid var(--brass); border-radius: 6px; text-decoration: none; color: var(--fg); box-shadow: var(--shadow); }
.corner > a:hover { border-color: var(--brass); }
.corner-name { font-family: var(--serif); font-weight: 700; font-size: 1.1rem; color: var(--link); }
.corner-desc { font-size: .88rem; color: var(--muted); line-height: 1.6; }
.corner.is-soon { border-top-color: var(--line); box-shadow: none; background: transparent; }
.corner.is-soon .corner-name { color: var(--muted); }

/* 記事の一覧 */
.post-list { list-style: none; padding: 0; margin: 0; display: grid; gap: .9rem; }
.post-card { background: var(--surface); border: 1px solid var(--line); border-radius: 6px; padding: 1rem 1.2rem; box-shadow: var(--shadow); }
.post-meta { display: flex; gap: .7rem; align-items: center; margin: 0; font-size: .82rem; color: var(--muted); }
.kicker { display: inline-block; font-size: .78rem; letter-spacing: .1em; color: var(--brass-text); border: 1px solid var(--brass); border-radius: 3px; padding: 0 .45rem; line-height: 1.6; }
.post-title { font-size: 1.15rem; margin: .3rem 0 .2rem; padding: 0; border: 0; }
.post-title a { color: var(--fg); text-decoration: none; }
.post-title a:hover { color: var(--link); text-decoration: underline; }
.post-desc { margin: 0; color: var(--muted); font-size: .92rem; line-height: 1.7; }
.more { text-align: right; font-size: .92rem; }

/* 記事 */
.entry-head { padding: 2.2rem 0 1.2rem; margin-bottom: 1.4rem; border-bottom: 1px solid var(--line); }
.entry-head .kicker { margin: 0 0 .7rem; }
.meta { display: flex; flex-wrap: wrap; gap: .2rem 1rem; margin: 0; color: var(--muted); font-size: .85rem; }
.toc { background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--brass); border-radius: 4px; padding: .6rem 1rem; margin: 0 0 1.8rem; font-size: .92rem; }
.toc summary { cursor: pointer; font-weight: 700; color: var(--brass-text); }
.toc ul { margin: .3rem 0; padding-left: 1.2rem; line-height: 1.7; }
.toc ul ul { padding-left: 1rem; font-size: .95em; }
.entry-body > p:first-child { font-size: 1.08rem; }
.entry-body blockquote { margin: 1.4rem 0; padding: .4rem 1.1rem; border-left: 3px solid var(--brass); background: var(--surface); color: var(--muted); }
.entry-body ul, .entry-body ol { padding-left: 1.4rem; }
.entry-body li { margin: .25rem 0; }
.entry-body hr { border: 0; height: 1px; background: var(--line); margin: 2.4rem 0; }
.entry-foot { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--line); font-size: .92rem; }

/* 表は横に広いので、はみ出す時は表だけを横に動かす */
table { display: block; overflow-x: auto; border-collapse: collapse; margin: 1.4rem 0; font-size: .92rem; line-height: 1.65; }
th, td { border: 1px solid var(--line); padding: .45rem .7rem; vertical-align: top; min-width: 6em; background: var(--surface); }
th { background: var(--brand); color: var(--brand-fg); text-align: left; font-weight: 600; border-color: var(--brand); }
img { max-width: 100%; height: auto; }
code { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: .9em; background: var(--code-bg); padding: .1em .35em; border-radius: 3px; }
pre { overflow-x: auto; background: var(--code-bg); padding: .9rem 1rem; border-radius: 6px; line-height: 1.6; }
pre code { background: none; padding: 0; }

/* 足元 */
.site-footer { background: var(--brand); color: var(--brand-muted); border-top: 3px solid var(--brass); padding: 2rem 0 2.4rem; font-size: .85rem; text-align: center; }
.site-footer .emblem { width: 2.2rem; height: 2.2rem; color: var(--brass); }
.site-footer p { margin: .3rem 0; }
.footer-name { font-family: var(--serif); color: var(--brand-fg); font-size: 1rem; font-weight: 700; }
.footer-links { display: flex; gap: 1.2rem; justify-content: center; }
.site-footer a { color: var(--brand-fg); }

@media (max-width: 40rem) {
  body { font-size: 1rem; }
  .site-header .inner { padding-top: .7rem; padding-bottom: .6rem; }
  .brand .emblem { width: 2.2rem; height: 2.2rem; }
  /* 長いサイト名を、小さいスマホ(320px)でも1行に収める */
  .site-name { font-size: clamp(1rem, 5vw, 1.2rem); letter-spacing: .01em; }
  .site-nav { width: 100%; gap: .1rem 1rem; font-size: .88rem; }
  .hero { padding: 1.8rem 0 2rem; }
  h2 { font-size: 1.22rem; }
}
@media (prefers-reduced-motion: no-preference) {
  a, .button, .corner > a { transition: color .15s, background-color .15s, border-color .15s; }
}