/* ============================================
   Reinforcement Learning in Production
   Gold & White — Light Premium Aesthetic
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --font: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Gold Palette */
  --gold: #A8882A;
  --gold-bright: #C8A84E;
  --gold-pale: #E8C547;
  --gold-dim: #8A6F1E;
  --gold-glow: rgba(168, 136, 42, 0.08);
  --gold-glow-strong: rgba(168, 136, 42, 0.15);

  /* Surfaces */
  --bg: #FFFFFF;
  --bg-raised: #F8F8F6;
  --bg-card: #FAFAF8;
  --bg-card-hover: #F3F3F0;
  --border: #E5E5E0;
  --border-light: #EDEDEA;

  /* Text */
  --text: #1A1A1A;
  --text-secondary: #555555;
  --text-muted: #888888;
  --text-dim: #BBBBBB;
  --white: #FFFFFF;

  /* Hero (stays dark) */
  --hero-bg: #0F0F0F;
  --hero-text: #FAFAF5;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  line-height: 1.5;
}
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img { display: block; max-width: 100%; height: auto; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #ccc; border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--gold); }

/* ---- Typography ---- */
.headline-xl {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.05;
  color: var(--text);
}
.headline-lg {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--text);
}
.headline-md {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--text);
}
.subhead {
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 1.7;
  letter-spacing: -0.01em;
}
.text-gradient {
  background: linear-gradient(135deg, var(--gold-bright), var(--gold), var(--gold-dim));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-gold { color: var(--gold); }
.font-mono { font-family: var(--mono); }

/* ---- Buttons ---- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--gold-bright), var(--gold), var(--gold-dim));
  color: #0A0A0A;
  font-size: 0.9rem;
  font-weight: 700;
  padding: 0.8rem 2rem;
  border-radius: 6px;
  text-decoration: none;
  transition: opacity 0.2s, box-shadow 0.2s, transform 0.15s;
  letter-spacing: 0.01em;
}
.btn-primary:hover {
  opacity: 0.9;
  box-shadow: 0 4px 24px rgba(200, 168, 78, 0.3);
  transform: translateY(-1px);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.75rem 1.8rem;
  border-radius: 6px;
  border: 1px solid var(--border-light);
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s;
  letter-spacing: 0.01em;
}
.btn-secondary:hover {
  border-color: var(--gold);
  color: var(--gold);
}

/* ---- Label Pill ---- */
.label-pill {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  background: var(--gold-glow);
  padding: 0.35rem 1rem;
  border-radius: 4px;
  border: 1px solid rgba(200, 168, 78, 0.2);
  margin-bottom: 1rem;
}

/* ---- Navigation ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 76rem;
  margin: 0 auto;
  padding: 0 2rem;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.nav-logo-img {
  height: 28px;
  width: auto;
}
.nav-logo .gold { color: var(--gold); }
.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}
.nav-links a {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.2s;
  letter-spacing: 0.01em;
}
.nav-links a:hover { color: var(--text); }
.nav-cta {
  background: var(--gold) !important;
  color: #0A0A0A !important;
  padding: 0.4rem 1.1rem !important;
  border-radius: 5px !important;
  font-weight: 700 !important;
  font-size: 0.78rem !important;
  transition: opacity 0.2s !important;
}
.nav-cta:hover { opacity: 0.85; }
.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}
.nav-mobile-toggle span {
  width: 20px;
  height: 1.5px;
  background: var(--text);
  border-radius: 1px;
}

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--hero-bg);
  overflow: hidden;
  padding: 7rem 2rem 4rem;
}
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(200, 168, 78, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 20% 80%, rgba(200, 168, 78, 0.04) 0%, transparent 50%),
    radial-gradient(ellipse 40% 40% at 80% 60%, rgba(200, 168, 78, 0.04) 0%, transparent 50%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(200, 168, 78, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200, 168, 78, 0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  pointer-events: none;
}
.hero-content { position: relative; z-index: 2; max-width: 52rem; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(200, 168, 78, 0.08);
  border: 1px solid rgba(200, 168, 78, 0.15);
  border-radius: 4px;
  padding: 0.4rem 1rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--gold);
  margin-bottom: 2.5rem;
  letter-spacing: 0.04em;
}
.hero-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.4); }
}
.hero h1 {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  color: #FAFAF5;
  margin-bottom: 1.25rem;
}
.hero h1 .gold {
  background: linear-gradient(135deg, #F0D76A, #C8A84E);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  font-weight: 600;
  color: var(--gold);
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}
.hero-desc {
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  color: var(--text-secondary);
  max-width: 36rem;
  margin: 0 auto 2.5rem;
  line-height: 1.65;
}
.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3.5rem;
  margin-top: 4rem;
  flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat .num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--gold);
  letter-spacing: -0.03em;
}
.hero-stat .label {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ---- Logo Strip ---- */
.logo-strip-section {
  background: var(--bg-raised);
  padding: 3rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.logo-strip-label {
  text-align: center;
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  margin-bottom: 1.25rem;
}
.ticker-wrapper { overflow: hidden; }
.ticker-track {
  display: flex;
  width: max-content;
  animation: ticker 35s linear infinite;
}
.ticker-track:hover { animation-play-state: paused; }
@keyframes ticker {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.ticker-item {
  display: flex;
  align-items: center;
  padding: 0 2rem;
  white-space: nowrap;
}
.ticker-item img {
  height: 48px;
  opacity: 0.7;
  transition: opacity 0.2s;
}
.ticker-item:hover img { opacity: 1; }
.ticker-item img[alt="OpenAI"],
.ticker-item img[alt="NVIDIA"],
.ticker-item img[alt="Meta"],
.ticker-item img[alt="Apple"],
.ticker-item img[alt="Tesla"],
.ticker-item img[alt="Microsoft"] {
  height: 32px;
}

/* ---- Sections ---- */
.section { padding: 6rem 2rem; }
.section-border { border-top: 1px solid var(--border); }
.section-inner { max-width: 72rem; margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 4rem; }
.section-header .subhead { max-width: 36rem; margin: 0.75rem auto 0; }

/* ---- Phase Tabs ---- */
.phase-tabs {
  display: flex;
  justify-content: center;
  gap: 0;
  margin-bottom: 3rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  display: inline-flex;
  margin-left: auto;
  margin-right: auto;
}
.phase-tabs-wrap { text-align: center; margin-bottom: 3rem; }
.phase-tab {
  padding: 0.65rem 2rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: transparent;
  transition: all 0.2s;
  cursor: pointer;
  border-right: 1px solid var(--border);
}
.phase-tab:last-child { border-right: none; }
.phase-tab.active {
  background: var(--gold);
  color: #0A0A0A;
}
.phase-tab:hover:not(.active) { color: var(--gold); background: var(--gold-glow); }
.phase-content { display: none; }
.phase-content.active { display: block; }

/* ---- Curriculum Grid ---- */
.curriculum-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

.curriculum-card {
  background: var(--bg);
  padding: 1.75rem;
  border-radius: 14px;
  border: 1px solid var(--border);
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}
.curriculum-card:hover {
  border-color: var(--gold-bright);
  box-shadow: 0 4px 20px rgba(168, 136, 42, 0.08);
  transform: translateY(-2px);
}
.curriculum-card .week {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gold);
  margin-bottom: 0.6rem;
}
.curriculum-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text);
  letter-spacing: -0.01em;
}
.curriculum-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.55;
}
.topics {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.75rem;
}
.topic-tag {
  font-family: var(--mono);
  font-size: 0.65rem;
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
  background: var(--gold-glow);
  color: var(--gold);
  border: 1px solid rgba(200, 168, 78, 0.12);
  font-weight: 500;
}

/* ---- Frameworks ---- */
.frameworks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}
.framework-card {
  background: var(--bg);
  padding: 1.5rem;
  text-align: center;
  border-radius: 14px;
  border: 1px solid var(--border);
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}
.framework-card:hover {
  border-color: var(--gold-bright);
  box-shadow: 0 4px 20px rgba(168, 136, 42, 0.08);
  transform: translateY(-2px);
}
.framework-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  color: var(--text);
}
.framework-card p {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.5;
}
.fw-used-in {
  font-size: 0.7rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
  font-style: italic;
}
.fw-link {
  display: inline-block;
  margin-top: 0.5rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--gold);
  transition: color 0.2s;
}
.fw-link:hover { color: var(--gold-dim); text-decoration: underline; }

/* ---- Projects ---- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 1.5rem;
}
.project-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}
.project-card:hover {
  border-color: var(--gold-bright);
  box-shadow: 0 6px 24px rgba(168, 136, 42, 0.08);
  transform: translateY(-3px);
}
.project-media {
  width: 100%;
  overflow: hidden;
  background: #f0f0ee;
  border-bottom: 1px solid var(--border);
}
.project-media img,
.project-media video {
  width: 100%;
  display: block;
  object-fit: cover;
  max-height: 220px;
}
.project-body { padding: 1.5rem; }
.project-num {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gold);
  margin-bottom: 0.5rem;
}
.project-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text);
}
.project-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1rem;
}
.project-tags { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.project-tag {
  font-family: var(--mono);
  font-size: 0.65rem;
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
  background: var(--gold-glow);
  color: var(--gold);
  border: 1px solid rgba(200, 168, 78, 0.12);
  font-weight: 500;
}

/* ---- Speakers ---- */
.speakers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}
.speaker-card {
  background: var(--bg);
  padding: 1.5rem;
  text-align: center;
  border-radius: 14px;
  border: 1px solid var(--border);
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}
.speaker-card:hover {
  border-color: var(--gold-bright);
  box-shadow: 0 4px 20px rgba(168, 136, 42, 0.08);
  transform: translateY(-2px);
}
.speaker-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  margin: 0 auto 0.75rem;
  background: var(--gold-glow);
  border: 1px solid rgba(200, 168, 78, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  font-family: var(--mono);
  color: var(--gold);
}
.speaker-card h3 {
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
  color: var(--text);
}
.speaker-card .role {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.15rem;
}
.speaker-card .company {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--gold);
}
.speaker-card .company img {
  display: inline-block;
  vertical-align: middle;
  margin-right: 4px;
  filter: brightness(0) invert(0.75) sepia(1) saturate(2) hue-rotate(10deg);
}

/* ---- Audience ---- */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}
.audience-card {
  background: var(--bg);
  padding: 1.75rem;
  border-radius: 14px;
  border: 1px solid var(--border);
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}
.audience-card:hover {
  border-color: var(--gold-bright);
  box-shadow: 0 4px 20px rgba(168, 136, 42, 0.08);
  transform: translateY(-2px);
}
.audience-card .icon { font-size: 1.5rem; margin-bottom: 0.6rem; }
.audience-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--text);
}
.audience-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---- Pricing ---- */
.pricing-inner {
  max-width: 72rem;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 2rem;
  align-items: start;
}
.pricing-options { display: flex; flex-direction: column; gap: 0.75rem; }
.select-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  background: var(--bg-card);
}
.select-card:hover { border-color: var(--border-light); background: var(--bg-card-hover); }
.select-card.selected {
  border-color: var(--gold);
  background: rgba(200, 168, 78, 0.04);
}
.select-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.2rem; color: var(--text); }
.select-card .price {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--gold);
  font-family: var(--mono);
}
.select-card .price .original {
  font-size: 0.9rem;
  color: var(--text-dim);
  text-decoration: line-through;
  font-weight: 400;
  margin-right: 0.5rem;
}
.select-card p { font-size: 0.82rem; color: var(--text-muted); margin-top: 0.25rem; }
.sticky-price-bar {
  position: sticky;
  top: 76px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.75rem;
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}
.sticky-price-bar h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text);
}
.price-summary-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}
.price-total {
  display: flex;
  justify-content: space-between;
  font-size: 1.15rem;
  font-weight: 800;
  padding: 1rem 0 0;
  margin-top: 0.5rem;
  border-top: 1px solid var(--gold);
  color: var(--text);
}
.price-total .amount { color: var(--gold); font-family: var(--mono); }
.enroll-btn {
  display: block;
  width: 100%;
  padding: 0.85rem;
  margin-top: 1.25rem;
  background: var(--gold);
  color: #0A0A0A;
  font-size: 0.9rem;
  font-weight: 700;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.15s;
  text-align: center;
}
.enroll-btn:hover { opacity: 0.88; transform: translateY(-1px); }

/* ---- FAQ ---- */
.faq-list { max-width: 48rem; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 0;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--text);
  width: 100%;
  text-align: left;
}
.faq-question .chevron {
  transition: transform 0.2s;
  font-size: 0.9rem;
  color: var(--text-dim);
}
.faq-item.open .faq-question .chevron { transform: rotate(180deg); color: var(--gold); }
.faq-answer {
  display: none;
  padding: 0 0 1.25rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
}
.faq-item.open .faq-answer { display: block; }

/* ---- Book / Why Vizuara ---- */
.book-section {
  display: flex;
  gap: 3rem;
  align-items: center;
  max-width: 60rem;
  margin: 0 auto;
}
.book-image {
  flex-shrink: 0;
  width: 280px;
}
.book-image img {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
}
.book-info { flex: 1; }
.book-publisher {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gold);
  margin-bottom: 0.5rem;
}
.book-info h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}
.book-info p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 0.75rem;
}
.book-highlights {
  display: flex;
  gap: 2rem;
  margin-top: 1.25rem;
  flex-wrap: wrap;
}
.book-highlight {
  padding: 0.75rem 1rem;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.bh-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 0.2rem;
}
.bh-value {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
}
@media (max-width: 768px) {
  .book-section { flex-direction: column; text-align: center; }
  .book-image { width: 200px; }
  .book-highlights { justify-content: center; }
}

/* ---- Instructor ---- */
.instructor-section {
  display: flex;
  gap: 3rem;
  align-items: center;
  max-width: 56rem;
  margin: 0 auto;
}
.instructor-photo {
  width: 180px;
  height: 180px;
  border-radius: 16px;
  background: var(--gold-glow);
  border: 1px solid rgba(200, 168, 78, 0.2);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
}
.instructor-info h3 { font-size: 1.4rem; font-weight: 700; color: var(--text); margin-bottom: 0.2rem; }
.instructor-info .title { font-size: 0.9rem; color: var(--gold); font-weight: 600; margin-bottom: 0.75rem; }
.instructor-info p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.65; }
.instructor-info strong { color: var(--gold); font-weight: 600; }
.instructor-stats { display: flex; gap: 2rem; margin-top: 1rem; }
.instructor-stat .num { font-size: 1.3rem; font-weight: 800; color: var(--gold); font-family: var(--mono); }
.instructor-stat .label { font-family: var(--mono); font-size: 0.68rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; }
.instructor-links {
  display: flex;
  gap: 1rem;
  margin-top: 1.25rem;
}
.instructor-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gold);
  transition: color 0.2s;
}
.instructor-link:hover { color: var(--gold-dim); }
.instructor-link svg { flex-shrink: 0; }

/* ---- Footer ---- */
.footer {
  background: #0F0F0F;
  border-top: 1px solid var(--border);
  color: #999;
  padding: 3rem 2rem;
  text-align: center;
}
.footer a { color: #999; }
.footer a:hover { color: #C8A84E; }
.footer-inner { max-width: 72rem; margin: 0 auto; }
.footer-links { display: flex; justify-content: center; gap: 2rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
.footer-links a { font-size: 0.82rem; transition: color 0.2s; }
.footer-links a:hover { color: var(--gold); }
.footer-copy { font-size: 0.72rem; color: #555; }

/* ---- Articles ---- */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}
.article-card {
  display: block;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.75rem;
  text-decoration: none;
  transition: border-color 0.25s, transform 0.25s;
}
.article-card:hover {
  border-color: var(--gold-dim);
  transform: translateY(-2px);
}
.article-tag {
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gold);
  margin-bottom: 0.75rem;
}
.article-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
  line-height: 1.3;
}
.article-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1rem;
}
.article-link {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--gold);
  transition: color 0.2s;
}
.article-card:hover .article-link { color: var(--gold-bright); }

/* ---- Video Sound Toggle ---- */
.project-media {
  position: relative;
}
.sound-toggle {
  position: absolute;
  bottom: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.15);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 5;
  transition: background 0.2s;
}
.sound-toggle:hover { background: rgba(0, 0, 0, 0.8); }
.sound-toggle svg { width: 18px; height: 18px; }

/* ---- Divider ---- */
.divider { height: 1px; background: var(--border); width: 100%; }

/* ---- Reveal Animations ---- */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
[data-reveal].revealed { opacity: 1; transform: none; }
[data-delay="1"] { transition-delay: 0.06s; }
[data-delay="2"] { transition-delay: 0.12s; }
[data-delay="3"] { transition-delay: 0.18s; }
[data-delay="4"] { transition-delay: 0.24s; }
[data-delay="5"] { transition-delay: 0.3s; }
[data-delay="6"] { transition-delay: 0.36s; }

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .pricing-inner { grid-template-columns: 1fr; }
  .sticky-price-bar { position: static; }
  .instructor-section { flex-direction: column; text-align: center; }
  .instructor-stats { justify-content: center; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-mobile-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(20px);
    padding: 1.5rem 2rem;
    gap: 1rem;
    border-bottom: 1px solid var(--border);
  }
  .hero { padding: 6rem 1.5rem 3rem; }
  .hero h1 { font-size: clamp(2rem, 9vw, 3.2rem); }
  .hero-stats { gap: 1.5rem; }
  .curriculum-grid, .frameworks-grid, .speakers-grid, .audience-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .section { padding: 4rem 1.25rem; }
}