:root {
  --bg: #0b0b0f;
  --panel: #14141b;
  --line: #26262f;
  --text: #f2f2f5;
  --muted: #a1a1aa;
  --accent: #2997ff;
  --accent2: #a259ff;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", "Segoe UI", sans-serif;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.blog-wrap { max-width: 780px; margin: 0 auto; padding: 0 20px 80px; }
.blog-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 22px 0; border-bottom: 1px solid var(--line); margin-bottom: 48px;
}
.blog-brand { font-weight: 700; letter-spacing: .18em; color: var(--text); font-size: .95rem; }
.blog-brand:hover { text-decoration: none; }
.blog-nav { display: flex; gap: 20px; font-size: .9rem; }
.blog-nav a { color: var(--muted); }
.eyebrow { letter-spacing: .22em; font-size: .78rem; color: var(--accent); font-weight: 700; margin: 0 0 10px; }
h1 { font-size: 2rem; line-height: 1.45; margin: 0 0 14px; }
.lead { color: var(--muted); font-size: 1.02rem; margin: 0 0 40px; }
.meta { color: var(--muted); font-size: .88rem; display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 8px; }
.tags { display: flex; gap: 8px; flex-wrap: wrap; margin: 14px 0 0; padding: 0; list-style: none; }
.tags li {
  border: 1px solid var(--line); border-radius: 999px; padding: 2px 12px;
  font-size: .8rem; color: var(--muted); background: var(--panel);
}
.post-card {
  display: block; background: var(--panel); border: 1px solid var(--line);
  border-radius: 18px; padding: 26px 26px 22px; color: var(--text); margin-bottom: 18px;
  transition: transform .18s ease, border-color .18s ease;
}
.post-card:hover { text-decoration: none; transform: translateY(-2px); border-color: var(--accent); }
.post-card h2 { font-size: 1.25rem; line-height: 1.5; margin: 6px 0 8px; }
.post-card p { color: var(--muted); margin: 0; font-size: .95rem; }
.post-card .meta { margin-bottom: 2px; }
article h2 {
  font-size: 1.35rem; margin: 52px 0 14px; line-height: 1.5;
  padding-left: 14px; border-left: 4px solid var(--accent);
}
article p { margin: 0 0 18px; }
article ul { margin: 0 0 18px; padding-left: 1.3em; }
article li { margin-bottom: 6px; }
article strong { color: #fff; }
.flow { display: grid; gap: 10px; margin: 26px 0 30px; }
.flow-step {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 14px 18px; display: flex; gap: 14px; align-items: baseline;
}
.flow-step .who {
  flex: 0 0 auto; font-size: .78rem; font-weight: 700; letter-spacing: .08em;
  color: #fff; background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 999px; padding: 2px 12px;
}
.flow-step .what { font-size: .95rem; }
.flow-step .what small { display: block; color: var(--muted); }
.works-list { list-style: none; padding: 0; margin: 0 0 18px; display: grid; gap: 10px; }
.works-list li { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 12px 18px; }
.works-list small { color: var(--muted); display: block; }
.note { color: var(--muted); font-size: .92rem; }
.blog-footer {
  margin-top: 70px; padding-top: 24px; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: .9rem;
}
.blog-footer a { color: var(--muted); }
@media (max-width: 560px) {
  h1 { font-size: 1.6rem; }
  .flow-step { flex-direction: column; gap: 6px; }
}