/* ===== ROOT ===== */
:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #141414;
  --text-primary: #f5f5f0;
  --text-secondary: #a8a8a0;
  --accent-gold: #c9a961;
  --accent-gold-bright: #e4c678;
  --accent-red: #6b0f1a;
  --accent-red-bright: #8b1a2b;
  --border-subtle: #2a2a2a;
}

/* ===== RESET ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Zen Kaku Gothic New', sans-serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3 {
  font-family: 'Shippori Mincho B1', serif;
  font-weight: 800;
  letter-spacing: 0.1em;
  line-height: 1.4;
}

h1 { font-size: 48px; }
h2 {
  font-size: 32px;
  color: var(--accent-gold);
  margin-bottom: 48px;
}

.price-display {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 600;
  color: var(--accent-gold);
}

.label-en {
  font-family: 'Cormorant Garamond', serif;
  font-size: 12px;
  color: var(--accent-gold);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* ===== LAYOUT ===== */
.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 32px;
}

section {
  padding: 120px 0;
}

/* ===== HEADER ===== */
.site-header {
  padding: 24px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-header .pictogram {
  height: 32px;
  width: auto;
}

.site-header .header-label {
  font-family: 'Cormorant Garamond', serif;
  font-size: 12px;
  color: var(--accent-gold);
  letter-spacing: 0.2em;
}

/* ===== HERO ===== */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: url('hero-bg.jpg') center center / cover no-repeat;
  position: relative;
  padding: 80px 0;
}

#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 40%, rgba(10,10,10,0.55) 0%, rgba(10,10,10,0.85) 50%, rgba(10,10,10,0.95) 100%);
  z-index: 0;
}

#hero .container {
  position: relative;
  z-index: 1;
}

#hero .hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

#hero .hero-label {
  font-family: 'Cormorant Garamond', serif;
  font-size: 12px;
  color: var(--accent-gold);
  letter-spacing: 0.3em;
}

#hero h1 {
  font-size: 48px;
  color: var(--text-primary);
  max-width: 700px;
}

#hero .hero-sub {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 600px;
}

.hero-rule {
  width: 60px;
  height: 1px;
  background: var(--accent-gold);
  border: none;
}

#hero .hero-date {
  font-family: 'Cormorant Garamond', serif;
  font-size: 18px;
  color: var(--text-secondary);
  letter-spacing: 0.15em;
}

#hero .hero-price {
  font-size: 80px;
  line-height: 1;
}

#hero .hero-price-note {
  font-size: 13px;
  color: var(--text-secondary);
}

#hero .hero-chapters-label {
  font-family: 'Cormorant Garamond', serif;
  font-size: 12px;
  color: var(--accent-gold);
  letter-spacing: 0.3em;
  margin-top: 8px;
}

/* ===== CTA BUTTON ===== */
.cta-btn {
  display: inline-block;
  padding: 16px 48px;
  background: var(--accent-red);
  color: var(--text-primary);
  border: 1px solid var(--accent-gold);
  font-family: 'Shippori Mincho B1', serif;
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.1em;
  text-decoration: none;
  border-radius: 2px;
  transition: background 0.3s;
  cursor: pointer;
}

.cta-btn:hover {
  background: var(--accent-red-bright);
}

/* ===== CONCEPT ===== */
#concept .concept-body {
  font-size: 17px;
  color: var(--text-primary);
  line-height: 1.9;
  margin-bottom: 32px;
}

#concept .concept-price-note {
  font-size: 15px;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-subtle);
  padding-top: 24px;
  margin-top: 24px;
}

/* ===== AUDIENCE ===== */
#audience .audience-block {
  margin-bottom: 48px;
}

#audience .audience-block:last-child {
  margin-bottom: 0;
}

#audience h3 {
  font-size: 22px;
  color: var(--text-primary);
  margin-bottom: 20px;
}

#audience .audience-not-for {
  border-left: 3px solid var(--accent-red);
  padding-left: 24px;
}

/* ===== CURRICULUM ===== */
#curriculum {
  border-top: 1px solid var(--border-subtle);
}

#curriculum .curriculum-sub {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 48px;
}

.accordion-item {
  border-bottom: 1px solid rgba(201,169,97,0.3);
}

.accordion-header {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 0 0 0 0;
  height: 80px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-primary);
  transition: background 0.3s, border-left 0.3s;
  border-left: 3px solid transparent;
  padding-left: 0;
}

.accordion-header:hover {
  background: var(--bg-secondary);
  border-left: 3px solid var(--accent-gold);
  padding-left: 16px;
}

.accordion-number {
  font-family: 'Cormorant Garamond', serif;
  font-size: 40px;
  font-weight: 600;
  color: var(--accent-gold);
  min-width: 72px;
  text-align: left;
}

.accordion-title {
  font-family: 'Shippori Mincho B1', serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--text-primary);
  flex: 1;
  text-align: left;
  padding: 0 16px;
}

.accordion-icon {
  font-family: 'Cormorant Garamond', serif;
  font-size: 24px;
  color: var(--accent-gold);
  min-width: 32px;
  text-align: center;
  transition: transform 0.4s ease-out;
  line-height: 1;
}

.accordion-item.is-open .accordion-icon {
  transform: rotate(45deg);
}

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease-out;
}

.accordion-panel-inner {
  padding: 32px 48px;
  background: var(--bg-secondary);
}

.accordion-lead {
  font-family: 'Shippori Mincho B1', serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--accent-gold);
  line-height: 1.8;
  margin-bottom: 24px;
}

.accordion-benefits {
  list-style: none;
  margin-bottom: 24px;
}

.accordion-benefits li {
  font-size: 16px;
  color: var(--text-primary);
  line-height: 1.9;
  padding-left: 20px;
  position: relative;
  margin-bottom: 8px;
}

.accordion-benefits li::before {
  content: '◆';
  color: var(--accent-gold);
  position: absolute;
  left: 0;
  font-size: 10px;
  top: 6px;
}

.accordion-concepts-label {
  font-family: 'Cormorant Garamond', serif;
  font-size: 12px;
  color: var(--accent-gold);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.accordion-concepts {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ===== SPEAKER ===== */
#speaker .speaker-bio {
  font-size: 17px;
  line-height: 1.9;
  margin-bottom: 32px;
}

#speaker .speaker-projects {
  font-size: 13px;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-subtle);
  padding-top: 16px;
}

/* ===== DETAILS ===== */
#details dl {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 16px 32px;
}

#details dt {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 400;
}

#details dd {
  font-size: 16px;
  color: var(--text-primary);
}

/* ===== PRICING ===== */
#pricing {
  text-align: center;
}

#pricing .pricing-bridge {
  font-size: 18px;
  color: var(--text-primary);
  line-height: 1.8;
  margin-bottom: 48px;
}

#pricing .pricing-amount {
  font-size: 120px;
  line-height: 1;
  margin-bottom: 16px;
}

#pricing .pricing-note {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 56px;
}

.pricing-methods {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  text-align: left;
  margin-top: 56px;
}

.pricing-method {
  padding: 32px;
  border: 1px solid var(--border-subtle);
}

.pricing-method h3 {
  font-size: 18px;
  color: var(--accent-gold);
  margin-bottom: 24px;
}

.pricing-method .bank-info {
  font-size: 15px;
  color: var(--text-primary);
  line-height: 1.9;
  margin-bottom: 16px;
}

.pricing-method .bank-deadline {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.pricing-method .contact-note {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.pricing-method .contact-note a {
  color: var(--accent-gold);
  text-decoration: none;
}

.pricing-method .contact-note a:hover {
  color: var(--accent-gold-bright);
}

/* ===== POLICY ===== */
#policy p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 2;
}

/* ===== FINAL CTA ===== */
#final-cta {
  text-align: center;
  background: radial-gradient(ellipse at 50% 50%, rgba(107,15,26,0.15) 0%, transparent 70%);
}

#final-cta .deadline {
  font-family: 'Cormorant Garamond', serif;
  font-size: 28px;
  font-weight: 600;
  color: var(--accent-gold);
  letter-spacing: 0.1em;
  margin-bottom: 24px;
}

#final-cta .seats {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

/* ===== FOOTER ===== */
.site-footer {
  padding: 48px 0;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
}

.site-footer .footer-company {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.site-footer a {
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--accent-gold);
}

.site-footer .footer-copy {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 16px;
  opacity: 0.6;
}

/* ===== ANIMATIONS ===== */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hero staggered load */
.hero-stagger {
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeIn 0.8s ease-out forwards;
}

@keyframes heroFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-stagger:nth-child(1) { animation-delay: 0s; }
.hero-stagger:nth-child(2) { animation-delay: 0.2s; }
.hero-stagger:nth-child(3) { animation-delay: 0.4s; }
.hero-stagger:nth-child(4) { animation-delay: 0.6s; }
.hero-stagger:nth-child(5) { animation-delay: 0.8s; }
.hero-stagger:nth-child(6) { animation-delay: 1.0s; }
.hero-stagger:nth-child(7) { animation-delay: 1.2s; }
.hero-stagger:nth-child(8) { animation-delay: 1.4s; }
.hero-stagger:nth-child(9) { animation-delay: 1.6s; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  section {
    padding: 80px 0;
  }

  .container {
    padding: 0 20px;
  }

  h1 { font-size: 32px; }
  h2 { font-size: 26px; margin-bottom: 36px; }

  #hero .hero-price,
  #hero .hero-price.price-display {
    font-size: 56px;
  }

  #hero h1 { font-size: 32px; }

  #pricing .pricing-amount {
    font-size: 72px;
  }

  .pricing-methods {
    grid-template-columns: 1fr;
  }

  #details dl {
    grid-template-columns: 100px 1fr;
    gap: 12px 20px;
  }

  .accordion-header {
    height: auto;
    padding: 16px 0;
  }

  .accordion-header:hover {
    padding-left: 8px;
  }

  .accordion-number {
    font-size: 28px;
    min-width: 48px;
  }

  .accordion-title {
    font-size: 15px;
    padding: 0 8px;
  }

  .accordion-panel-inner {
    padding: 24px 16px;
  }

  .accordion-lead {
    font-size: 16px;
  }

  .accordion-benefits li {
    font-size: 15px;
  }

  #final-cta .deadline {
    font-size: 22px;
  }
}

@media (max-width: 480px) {
  h1 { font-size: 28px; }

  #hero .hero-price,
  #hero .hero-price.price-display {
    font-size: 44px;
  }

  #pricing .pricing-amount {
    font-size: 56px;
  }

  .accordion-number {
    font-size: 24px;
    min-width: 40px;
  }

  .accordion-title {
    font-size: 14px;
  }

  #details dl {
    grid-template-columns: 1fr;
    gap: 4px 0;
  }

  #details dt {
    color: var(--accent-gold);
    font-size: 13px;
  }

  #details dd {
    margin-bottom: 12px;
    font-size: 15px;
  }
}