/* SINDSQ ポータル — エディトリアル（雑誌の目次）方針
   フォントは自己ホスト規約を満たすためシステム書体のみ（明朝=見出し/ゴシック=本文）。 */
:root {
  --bg: #101319;
  --bg2: #161b24;
  --ink: #eef1f6;
  --sub: #9aa4b5;
  --line: #2a3140;
  --accent: #d8b04c;
  --serif: "Hiragino Mincho ProN", "Yu Mincho", "BIZ UDMincho", "Noto Serif JP", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f4ee;
    --bg2: #fffdf8;
    --ink: #23252b;
    --sub: #5d6470;
    --line: #ddd8ca;
    --accent: #a07c18;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  background-image: radial-gradient(circle at 85% -10%, rgba(216,176,76,.07), transparent 55%);
}

a { color: inherit; }

/* ---- masthead ---- */
.masthead {
  display: flex; justify-content: space-between; align-items: baseline;
  max-width: 980px; margin: 0 auto; padding: 26px 22px 0;
}
.brand {
  margin: 0; font-family: var(--serif); font-weight: 700;
  font-size: 1.35rem; letter-spacing: .18em;
}
.brand-kana { font-family: var(--sans); font-size: .68rem; font-weight: 400; color: var(--sub); margin-left: 10px; letter-spacing: .3em; }
.mnav { display: flex; gap: 18px; font-size: .8rem; }
.mnav a { color: var(--sub); text-decoration: none; }
.mnav a:hover { color: var(--ink); }

main { max-width: 980px; margin: 0 auto; padding: 0 22px 60px; }

/* ---- hero ---- */
.hero { padding: 72px 0 84px; border-bottom: 1px solid var(--line); }
.hero-eyebrow {
  font-size: .68rem; letter-spacing: .42em; color: var(--accent);
  margin: 0 0 18px; font-weight: 600;
}
.hero h1 {
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(2.3rem, 6.4vw, 4.1rem);
  line-height: 1.28; letter-spacing: .04em; margin: 0 0 26px;
}
.hero h1 em { font-style: normal; border-bottom: 4px solid var(--accent); padding-bottom: 2px; }
.hero-lead { color: var(--sub); font-size: .95rem; max-width: 640px; margin: 0; }
.hero-lead strong { color: var(--ink); }

/* ---- section head ---- */
.sec-head {
  display: flex; align-items: baseline; gap: 16px;
  font-family: var(--sans); font-size: .8rem; font-weight: 400;
  letter-spacing: .34em; color: var(--sub);
  margin: 64px 0 8px; text-transform: uppercase;
}
.sec-no {
  font-family: var(--serif); font-size: 1.25rem; font-weight: 700;
  color: var(--ink); letter-spacing: .14em;
}

/* ---- site rows ---- */
.site {
  display: grid; grid-template-columns: 96px 1fr; gap: 10px;
  padding: 44px 0; border-bottom: 1px solid var(--line);
}
.site-no {
  font-family: var(--serif); font-size: 2.6rem; line-height: 1;
  color: var(--acc, var(--accent)); opacity: .9; padding-top: 6px;
  font-variant-numeric: tabular-nums;
}
.site-cat { font-size: .7rem; letter-spacing: .22em; color: var(--acc); margin: 0 0 6px; font-weight: 600; }
.site-name { font-family: var(--serif); font-size: 1.7rem; margin: 0 0 4px; letter-spacing: .05em; }
.site-name a { text-decoration: none; border-bottom: 1px solid transparent; }
.site-name a:hover { border-bottom-color: var(--acc); }
.site-tag { margin: 0 0 14px; color: var(--ink); font-weight: 600; font-size: .95rem; }
.site-desc { margin: 0 0 14px; color: var(--sub); font-size: .88rem; max-width: 660px; }
.site-desc b { color: var(--ink); font-weight: 600; }
.site-picks { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 0 0 12px; }
.site-picks a {
  display: inline-block; font-size: .78rem; text-decoration: none;
  border: 1px solid var(--line); border-radius: 999px; padding: 5px 14px;
  color: var(--ink); background: var(--bg2); transition: border-color .15s;
}
.site-picks a:hover { border-color: var(--acc); }
.site-meta { margin: 0; font-size: .72rem; color: var(--sub); letter-spacing: .06em; }

/* ---- principles ---- */
.prin-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 22px; }
.prin { background: var(--bg2); padding: 22px 24px; }
.prin h3 { font-family: var(--serif); font-size: 1.02rem; margin: 0 0 8px; letter-spacing: .06em; }
.prin p { margin: 0; font-size: .82rem; color: var(--sub); }

/* ---- about ---- */
.about-p { color: var(--sub); font-size: .88rem; max-width: 700px; margin-top: 20px; }
.about-p a { color: var(--ink); }

/* ---- footer ---- */
footer { border-top: 1px solid var(--line); margin-top: 30px; }
.f-sites { display: flex; flex-wrap: wrap; gap: 18px; justify-content: center; padding: 26px 22px 0; margin: 0; font-size: .8rem; }
.f-sites a { color: var(--sub); text-decoration: none; }
.f-sites a:hover { color: var(--ink); }
.f-copy { text-align: center; color: var(--sub); font-size: .7rem; padding: 12px 0 34px; margin: 0; letter-spacing: .2em; }

/* ---- mobile ---- */
@media (max-width: 640px) {
  .site { grid-template-columns: 1fr; gap: 4px; padding: 36px 0; }
  .site-no { font-size: 1.7rem; padding: 0; }
  .prin-grid { grid-template-columns: 1fr; }
  .hero { padding: 52px 0 60px; }
  .masthead { flex-direction: column; gap: 6px; }
}

/* ---- 404 ---- */
.nf { text-align: center; padding: 110px 20px; }
.nf h1 { font-family: var(--serif); font-size: 3rem; margin: 0 0 10px; }
.nf p { color: var(--sub); }
.nf a { color: var(--accent); }