:root {
  --bg: #FAF9F6;
  --ink: #1A1A2E;
  --ink-soft: #5A5A72;
  --accent: #6C5CE7;
  --accent-soft: #E8E6FF;
  --border: #E4E1DA;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Noto Sans JP', sans-serif; background: var(--bg); color: var(--ink); line-height: 1.9; }
h1, h2 { font-family: 'Zen Kaku Gothic New', sans-serif; font-weight: 700; letter-spacing: 0.02em; }
a { color: var(--accent); text-decoration: none; }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 1.5rem; }

header { background: rgba(250,249,246,0.92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); position: sticky; top: 0; }
.nav { display: flex; align-items: center; justify-content: space-between; padding: 1rem 0; }
.logo { font-family: 'Zen Kaku Gothic New', sans-serif; font-weight: 700; font-size: 1.15rem; display: flex; align-items: center; gap: 8px; color: var(--ink); }
.logo-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); }
.back-link { font-size: 13px; color: var(--ink-soft); }
.back-link:hover { color: var(--accent); }

main { padding: 3.5rem 0 4rem; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; color: var(--accent); font-weight: 500; letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 1rem; }
.eyebrow::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
h1 { font-size: clamp(1.6rem, 3.5vw, 2.1rem); margin-bottom: 0.5rem; }
.updated { font-size: 13px; color: var(--ink-soft); margin-bottom: 2.5rem; }