* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #1a2a6c; --gold: #d4a843; --gold-lt: #f0cc6e; --purple-lt: #aab6ff;
  --text: #f0f2ff; --text-sub: #c0ceee; --text-dim: #8898cc;
  --border: rgba(160,180,255,.18); --card: rgba(255,255,255,.06);
}
html { scroll-behavior: smooth; }
body {
  font-family: "Hiragino Mincho ProN", "Yu Mincho", Georgia, serif;
  background: var(--bg); color: var(--text); line-height: 2; overflow-x: hidden;
}
body::before {
  content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background: radial-gradient(ellipse 140% 70% at 50% -5%, rgba(80,60,220,.5) 0%, transparent 65%);
}
header {
  position: sticky; top: 0; z-index: 100; background: rgba(22,36,98,.93);
  backdrop-filter: blur(20px); border-bottom: 1px solid var(--border);
}
.header-inner { max-width: 680px; margin: 0 auto; padding: 0 18px; display: flex; align-items: center; justify-content: space-between; height: 54px; }
.logo {
  font-size: 1rem; font-weight: 700; letter-spacing: .12em; text-decoration: none;
  background: linear-gradient(90deg, var(--gold-lt), var(--purple-lt));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.back-link { color: var(--text-sub); font-size: .75rem; text-decoration: none; letter-spacing: .08em; }
main { position: relative; z-index: 1; max-width: 680px; margin: 0 auto; padding: 0 18px 80px; }
.article-header { padding: 30px 0 24px; border-bottom: 1px solid var(--border); margin-bottom: 28px; }
.tag {
  display: inline-block; font-size: .63rem; letter-spacing: .14em; padding: 3px 11px;
  border-radius: 40px; margin-bottom: 12px;
  background: rgba(212,168,67,.18); color: var(--gold-lt); border: 1px solid rgba(212,168,67,.3);
}
.tag.rose { background: rgba(194,105,122,.2); color: #e8a0ae; border-color: rgba(194,105,122,.3); }
h1 {
  font-size: clamp(1.3rem, 5vw, 1.7rem); line-height: 1.55; letter-spacing: .05em; margin-bottom: 12px;
  background: linear-gradient(135deg, #fff 0%, var(--gold-lt) 60%, var(--purple-lt) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.meta { font-size: .72rem; color: var(--text-dim); letter-spacing: .08em; }
.pr-note { font-size: .68rem; color: var(--text-dim); border: 1px solid var(--border); border-radius: 8px; padding: 6px 12px; margin-top: 12px; display: inline-block; }
article h2 {
  font-size: 1.05rem; letter-spacing: .08em; color: var(--gold-lt);
  margin: 38px 0 14px; padding: 11px 16px;
  background: rgba(212,168,67,.08); border-left: 3px solid var(--gold); border-radius: 0 10px 10px 0;
}
article h3 { font-size: .95rem; color: var(--purple-lt); margin: 26px 0 10px; letter-spacing: .06em; }
article p { font-size: .92rem; color: #dde8ff; margin-bottom: 16px; }
article ul, article ol { margin: 0 0 16px 1.4em; font-size: .92rem; color: #dde8ff; }
article li { margin-bottom: 6px; }
strong { color: var(--gold-lt); }
.point {
  background: rgba(100,130,255,.08); border: 1px solid rgba(100,130,255,.2);
  border-radius: 14px; padding: 16px 18px; margin: 20px 0; font-size: .86rem; color: var(--text-sub);
}
.point b { color: var(--purple-lt); }
.af-slot {
  border: 2px dashed rgba(212,168,67,.5); border-radius: 14px; padding: 18px; margin: 22px 0;
  font-size: .8rem; color: var(--text-dim); text-align: center; font-family: sans-serif;
}
.cta {
  background: linear-gradient(135deg, rgba(70,55,200,.38), rgba(180,110,30,.2));
  border: 1px solid rgba(212,168,67,.22); border-radius: 20px;
  padding: 26px 22px; text-align: center; margin: 40px 0 10px;
}
.cta h3 { font-size: 1.05rem; margin: 0 0 10px; letter-spacing: .1em;
  background: linear-gradient(90deg, var(--gold-lt), var(--purple-lt));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.cta p { font-size: .84rem; color: #dde8ff; margin-bottom: 16px; }
.cta a {
  display: inline-flex; align-items: center; gap: 8px; text-decoration: none; color: #fff;
  background: linear-gradient(90deg, #d4a843, #b8862f); border-radius: 50px;
  padding: 12px 28px; font-size: .88rem; letter-spacing: .08em; margin: 4px;
}
.cta a.line { background: linear-gradient(90deg, #06c755, #04a844); }
footer { text-align: center; padding: 24px 16px 40px; font-size: .68rem; color: var(--text-dim); border-top: 1px solid var(--border); position: relative; z-index: 1; }
footer a { color: var(--text-dim); }