/* Avant-Garde Kabuki - Book 1 Detailing Style */
:root {
  --primary: #FF0033; /* プライマリレッド */
  --secondary: #D4AF37; /* ゴールド */
  --bg: #0A0A0A;
  --bg-card: #151515;
  --text: #FFFFFF;
  --text-muted: #A0A0A0;
  --font-main: 'Yuji Syuku', serif;
  --font-body: 'Noto Sans JP', sans-serif;
  --ease: cubic-bezier(0.23, 1, 0.32, 1);
}

* {
  margin: 0; padding: 0; box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

/* Header Navbar */
.nav-header {
  border-bottom: 1px solid rgba(255,255,255,0.05);
  padding: 1.5rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(10px);
  z-index: 1000;
}

.logo-link {
  font-family: var(--font-main);
  font-size: 1.4rem;
  color: var(--secondary);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.nav-links a {
  font-size: 0.9rem;
  color: var(--text);
  text-decoration: none;
  margin-left: 1.5rem;
  transition: color 0.2s var(--ease);
}
.nav-links a:hover {
  color: var(--primary);
}

/* Hero Section */
.hero-container {
  padding: 6rem 5% 4rem;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  background: radial-gradient(circle at 80% 20%, rgba(255, 0, 51, 0.08), transparent 45%);
}

.hero-grid {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: center;
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-cover-img {
  width: 100%;
  max-width: 320px;
  height: auto;
  border: 1px solid rgba(212, 175, 55, 0.35);
  box-shadow: 
    0 25px 50px rgba(0,0,0,0.6),
    0 0 30px rgba(255, 0, 51, 0.1);
  border-radius: 4px;
}

.series-badge {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--secondary);
  border: 1px solid rgba(212, 175, 55, 0.4);
  padding: 0.3rem 0.8rem;
  border-radius: 2px;
  margin-bottom: 1.5rem;
  letter-spacing: 0.1em;
}

.hero-title-main {
  font-family: var(--font-main);
  font-size: clamp(2.5rem, 6vw, 4rem);
  line-height: 1.2;
  margin-bottom: 1.5rem;
  color: #fff;
  text-shadow: 0 0 15px rgba(255, 0, 51, 0.15);
}

.hero-subtitle-main {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  font-weight: 300;
}

.btn-primary {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  padding: 1rem 2.5rem;
  border-radius: 4px;
  transition: all 0.3s var(--ease);
  border: 1px solid var(--primary);
  letter-spacing: 0.05em;
  font-family: var(--font-body);
}
.btn-primary:hover {
  background: transparent;
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(255, 0, 81, 0.2);
}

/* Post Layout Wrapper */
.post-layout-wrapper {
  max-width: 860px;
  margin: 0 auto;
  padding: 4rem 5%;
}

/* Quote Section */
.quote-block-section {
  margin: 5rem 0;
  display: flex;
  justify-content: center;
  position: relative;
}

.quote-card {
  padding: 3rem;
  border-left: 2px solid var(--primary);
  background: rgba(255, 255, 255, 0.01);
  text-align: center;
}

.quote-text-vertical {
  font-family: var(--font-main);
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  line-height: 2;
  color: #fff;
  letter-spacing: 0.15em;
  margin-bottom: 1.5rem;
}

.quote-author {
  font-size: 0.85rem;
  color: var(--secondary);
  font-family: var(--font-body);
  letter-spacing: 0.1em;
}

/* Section Title */
.section-title-main {
  font-family: var(--font-main);
  font-size: 2rem;
  color: var(--secondary);
  text-align: center;
  margin-bottom: 3.5rem;
  letter-spacing: 0.1em;
  position: relative;
}
.section-title-main::after {
  content: '';
  position: absolute;
  bottom: -0.8rem;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 2px;
  background: var(--primary);
}

/* Chapters Grid */
.chapters-section {
  margin: 6rem 0;
}

.chapters-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

.chapter-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: 6px;
  padding: 2.5rem;
  transition: all 0.3s var(--ease);
}
.chapter-card:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(255, 0, 51, 0.08);
}

.chapter-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.chapter-number {
  font-family: var(--font-main);
  font-size: 0.9rem;
  color: var(--primary);
  border: 1px solid var(--primary);
  padding: 0.15rem 0.5rem;
  border-radius: 2px;
}

.chapter-header h3 {
  font-family: var(--font-main);
  font-size: 1.6rem;
  color: #fff;
}

.chapter-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  font-weight: 300;
}

.chapter-bullets {
  list-style: none;
  padding-left: 0;
  display: grid;
  gap: 0.6rem;
}

.chapter-bullets li {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text);
  position: relative;
  padding-left: 1.2rem;
}
.chapter-bullets li::before {
  content: '▪';
  position: absolute;
  left: 0;
  color: var(--secondary);
}

/* Statement Section */
.concept-statement-section {
  margin: 6rem 0;
  background: linear-gradient(135deg, rgba(255, 0, 51, 0.08) 0%, transparent 100%);
  border: 1px solid rgba(255, 0, 51, 0.15);
  border-radius: 8px;
  padding: 3.5rem;
  text-align: center;
}

.statement-title {
  font-family: var(--font-main);
  font-size: 1.8rem;
  color: var(--secondary);
  margin-bottom: 1.5rem;
}

.statement-body {
  font-size: 1rem;
  color: var(--text);
  line-height: 2;
  font-weight: 300;
}

/* Final CTA */
.final-cta-section {
  margin: 6rem 0 2rem;
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.05);
  padding-top: 5rem;
}

.cta-heading-sub {
  font-family: var(--font-main);
  font-size: 2.8rem;
  color: var(--secondary);
  margin-bottom: 1rem;
}

.cta-copy-sub {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 3rem;
  font-weight: 300;
}

.final-buttons {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.btn-outline {
  display: inline-block;
  border: 1px solid var(--secondary);
  color: var(--secondary);
  text-decoration: none;
  font-weight: 700;
  padding: 1rem 2.5rem;
  border-radius: 4px;
  transition: all 0.3s var(--ease);
  font-family: var(--font-body);
}
.btn-outline:hover {
  background: var(--secondary);
  color: #000;
  transform: translateY(-2px);
}

/* Footer */
.articles-footer {
  text-align: center;
  padding: 4rem 0 2rem;
  border-top: 1px solid rgba(255,255,255,0.05);
  font-size: 0.75rem;
  color: var(--text-muted);
  opacity: 0.5;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    text-align: center;
  }
  .hero-visual {
    order: -1;
  }
  .hero-cover-img {
    max-width: 240px;
  }
  .post-layout-wrapper {
    padding: 2rem 5%;
  }
  .quote-card {
    padding: 2rem 1rem;
  }
  .quote-text-vertical {
    writing-mode: unset;
    text-orientation: unset;
  }
  .final-buttons {
    flex-direction: column;
    width: 100%;
    align-items: center;
  }
  .btn-primary, .btn-outline {
    width: 100%;
    max-width: 320px;
  }
}