:root {
  --black: #0a0a0a;
  --black2: #111111;
  --black3: #1a1a1a;
  --white: #f0ede8;
  --white2: #d4d0cb;
  --gold: #c8a46e;
  --gold2: #a07840;
  --muted: #888880;
  --border: #2a2a2a;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--black);
  color: var(--white);
  font-family: 'Noto Serif JP', serif;
  font-weight: 300;
  line-height: 1.9;
  font-size: 16px;
}

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s;
}

header.scrolled { border-bottom-color: var(--border); }

.logo {
  font-family: 'Shippori Mincho', serif;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 4px;
  color: var(--white);
  text-decoration: none;
}

nav { display: flex; gap: 32px; }

nav a {
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--muted);
  text-decoration: none;
  transition: color .2s;
}

nav a:hover,
nav a.active { color: var(--gold); }

.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: var(--gold);
  z-index: 200;
  width: 0;
}

.article-hero {
  padding: 160px 48px 72px;
  max-width: 900px;
  margin: 0 auto;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}

.article-cat {
  font-size: 10px;
  letter-spacing: 4px;
  color: var(--gold);
  border: 1px solid var(--gold2);
  padding: 4px 12px;
}

.article-date {
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--muted);
}

.article-title {
  font-family: 'Shippori Mincho', serif;
  font-size: clamp(30px, 5.6vw, 54px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: 2px;
  margin-bottom: 14px;
}

.article-subtitle {
  font-family: 'Shippori Mincho', serif;
  font-size: clamp(16px, 2.4vw, 22px);
  color: var(--gold);
  letter-spacing: 2px;
  margin-bottom: 24px;
}

.article-lead {
  color: var(--white2);
  line-height: 2;
  border-bottom: 1px solid var(--border);
  padding-bottom: 40px;
}

.article-body {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 48px 72px;
}

.article-body p {
  margin-bottom: 1.7em;
  color: var(--white2);
  font-size: 16px;
  line-height: 2;
}

.article-body h2 {
  font-family: 'Shippori Mincho', serif;
  font-size: 24px;
  font-weight: 800;
  color: var(--white);
  margin: 2.7em 0 1em;
  border-left: 3px solid var(--gold);
  padding-left: 18px;
  letter-spacing: 2px;
  line-height: 1.5;
}

.article-body blockquote {
  margin: 2.4em 0;
  padding: 24px 28px;
  border-left: 3px solid var(--gold);
  background: var(--black3);
  color: var(--white2);
  line-height: 1.9;
}

.kanji-deco {
  font-family: 'Shippori Mincho', serif;
  font-size: clamp(80px, 15vw, 160px);
  font-weight: 800;
  color: rgba(200, 164, 110, 0.07);
  line-height: 1;
  text-align: right;
  margin: -20px 0 -60px;
  pointer-events: none;
  user-select: none;
}

.point-box {
  margin: 2.4em 0;
  padding: 24px 28px;
  border: 1px solid var(--border);
  background: var(--black2);
}

.point-box-label {
  font-size: 10px;
  letter-spacing: 4px;
  color: var(--gold);
  margin-bottom: 12px;
}

.point-box ul { padding-left: 1.2em; }
.point-box li { margin: .5em 0; color: var(--white2); }

.divider {
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border), transparent);
  margin: 3em 0;
}

.article-cta {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 48px 64px;
}

.cta-box {
  border: 1px solid var(--border);
  background: var(--black2);
  padding: 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.cta-label { font-size: 10px; letter-spacing: 4px; color: var(--gold); margin-bottom: 10px; }

.cta-title {
  font-family: 'Shippori Mincho', serif;
  font-size: 22px;
  font-weight: 800;
  line-height: 1.4;
}

.cta-desc {
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

.cta-btn {
  flex-shrink: 0;
  text-decoration: none;
  border: 1px solid var(--gold2);
  color: var(--gold);
  padding: 12px 24px;
  font-size: 11px;
  letter-spacing: 2px;
}

.cta-btn:hover { background: var(--gold); color: var(--black); }

.related {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 48px 96px;
}

.related-label {
  font-size: 10px;
  letter-spacing: 4px;
  color: var(--muted);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.related-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.related-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.related-item {
  border: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  background: var(--black2);
  padding: 18px 20px;
}

.related-item:hover { border-color: var(--gold2); }

.related-item-cat {
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--gold);
  margin-bottom: 8px;
}

.related-item-title {
  font-family: 'Shippori Mincho', serif;
  color: var(--white2);
  line-height: 1.5;
}

.related-item-date {
  font-size: 11px;
  color: var(--muted);
  margin-top: 8px;
}

footer {
  border-top: 1px solid var(--border);
  padding: 36px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-logo {
  font-family: 'Shippori Mincho', serif;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 4px;
}

.footer-copy { font-size: 11px; color: var(--muted); }

@media (max-width: 768px) {
  header { padding: 16px 20px; }
  nav { gap: 14px; flex-wrap: wrap; }
  nav a { font-size: 10px; letter-spacing: 2px; }
  .article-hero { padding: 130px 20px 56px; }
  .article-body { padding: 0 20px 56px; }
  .article-cta { padding: 0 20px 48px; }
  .cta-box { flex-direction: column; align-items: flex-start; padding: 28px 22px; }
  .related { padding: 0 20px 72px; }
  .related-grid { grid-template-columns: 1fr; }
  footer { padding: 28px 20px; flex-direction: column; gap: 10px; text-align: center; }
}