/* ===== Variables ===== */
:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #161616;
  --bg-card-hover: #1c1c1c;
  --gold: #d4af37;
  --gold-light: #e8c84a;
  --gold-dim: rgba(212, 175, 55, 0.15);
  --gold-glow: rgba(212, 175, 55, 0.3);
  --text-primary: #f5f5f5;
  --text-secondary: #a0a0a0;
  --text-muted: #666;
  --border: rgba(255, 255, 255, 0.08);
  --border-gold: rgba(212, 175, 55, 0.25);
  --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Playfair Display', 'Noto Sans SC', serif;
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container-wide: 1320px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-wide {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 32px;
}

.gold {
  color: var(--gold);
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}

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

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
}

.logo-img {
  display: block;
  height: 40px;
  width: auto;
  object-fit: contain;
  border-radius: 5px;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: #000;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.1rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color var(--transition);
  position: relative;
}

.nav-links a:not(.nav-cta):hover {
  color: var(--text-primary);
}

.nav-links a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width var(--transition);
}

.nav-links a:not(.nav-cta):hover::after {
  width: 100%;
}

.nav-cta {
  background: var(--gold);
  color: #000 !important;
  padding: 8px 20px;
  border-radius: 8px;
  font-weight: 600;
  transition: background var(--transition), transform var(--transition);
}

.nav-cta:hover {
  background: var(--gold-light);
  transform: translateY(-1px);
}

.nav-links a.is-current {
  color: var(--text-primary);
}

.nav-links a.is-current::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  border: none;
  transition: all var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: #000;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--gold-glow);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-gold);
}

.btn-outline:hover {
  background: var(--gold-dim);
  border-color: var(--gold);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.btn-lg {
  padding: 16px 40px;
  font-size: 1rem;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 0 100px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(212, 175, 55, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 85% 50%, rgba(212, 175, 55, 0.04) 0%, transparent 50%),
    var(--bg-primary);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 40%, black 20%, transparent 70%);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}

.hero-glow-1 {
  width: 500px;
  height: 500px;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(212, 175, 55, 0.06);
}

.hero-content {
  position: relative;
  text-align: center;
  max-width: 800px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid var(--border-gold);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--gold);
  margin-bottom: 28px;
  background: var(--gold-dim);
  letter-spacing: 0.05em;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  padding: 28px 40px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}

.stat {
  text-align: center;
}

.stat-num {
  display: block;
  font-size: 2rem;
  font-weight: 900;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ===== Sections ===== */
.section {
  padding: 120px 0;
  position: relative;
}

.section-title-xl {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
}

.section-header {
  margin-bottom: 60px;
}

.section-header.center {
  text-align: center;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gold);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.8;
}

.section-header.center .section-desc {
  margin: 0 auto;
}

/* ===== Schedule ===== */
.schedule {
  background: var(--bg-secondary);
  overflow: hidden;
}

.schedule-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 40% at 50% 0%, rgba(212, 175, 55, 0.05) 0%, transparent 60%);
  pointer-events: none;
}

.schedule-legend {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.dot-closed { background: #6b7280; }
.dot-full { background: #3b82f6; }
.dot-hot { background: #ef4444; }
.dot-open { background: #22c55e; }

.terms-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

@media (min-width: 1201px) {
  .terms-grid {
    grid-template-columns: repeat(12, 1fr);
  }

  .term-card {
    grid-column: span 3;
  }

  .term-card:nth-child(5) { grid-column: 2 / span 3; }
  .term-card:nth-child(6) { grid-column: 5 / span 3; }
  .term-card:nth-child(7) { grid-column: 8 / span 3; }
}

.term-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
}

.term-card:hover {
  border-color: var(--border-gold);
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.term-card.is-last {
  grid-column: span 1;
}

.term-header {
  padding: 14px 18px;
  font-weight: 700;
  font-size: 0.95rem;
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.term-header.t1 { background: linear-gradient(135deg, #16a34a, #15803d); }
.term-header.t2 { background: linear-gradient(135deg, #2563eb, #1d4ed8); }
.term-header.t3 { background: linear-gradient(135deg, #ea580c, #c2410c); }
.term-header.t4 { background: linear-gradient(135deg, #7c3aed, #6d28d9); }
.term-header.t5 { background: linear-gradient(135deg, #d97706, #b45309); }
.term-header.t6 { background: linear-gradient(135deg, #059669, #047857); }
.term-header.t7 { background: linear-gradient(135deg, #dc2626, #b91c1c); }

.term-status {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 100px;
  background: rgba(0, 0, 0, 0.25);
  letter-spacing: 0.05em;
}

.term-status.closed { background: rgba(107, 114, 128, 0.5); }
.term-status.full { background: rgba(59, 130, 246, 0.5); }
.term-status.hot { background: rgba(239, 68, 68, 0.5); }
.term-status.open { background: rgba(34, 197, 94, 0.5); }

.term-calendar {
  padding: 16px;
  background: #f8f9fb;
  color: #1f2937;
}

.cal-months {
  display: flex;
  gap: 8px;
}

.cal-month {
  flex: 1;
  min-width: 0;
}

.cal-month-name {
  text-align: center;
  font-size: 0.7rem;
  font-weight: 700;
  color: #374151;
  padding: 4px;
  background: #e5e7eb;
  border-radius: 4px 4px 0 0;
}

.cal-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1px;
  font-size: 0.5rem;
  text-align: center;
  color: #9ca3af;
  padding: 4px 0;
}

.cal-days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
}

.cal-day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.55rem;
  border-radius: 2px;
  color: #6b7280;
}

.cal-day.empty { visibility: hidden; }
.cal-day.active { color: #fff; font-weight: 700; }

.cal-day.active.t1 { background: #16a34a; }
.cal-day.active.t2 { background: #2563eb; }
.cal-day.active.t3 { background: #ea580c; }
.cal-day.active.t4 { background: #7c3aed; }
.cal-day.active.t5 { background: #d97706; }
.cal-day.active.t6 { background: #059669; }
.cal-day.active.t7 { background: #dc2626; }

.term-footer {
  padding: 14px 18px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.term-date {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gold);
}

.term-stamp {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-15deg);
  width: 72px;
  height: 72px;
  border: 3px solid;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.05em;
  opacity: 0.85;
  pointer-events: none;
  z-index: 2;
}

.term-stamp.closed {
  color: #6b7280;
  border-color: #6b7280;
  background: rgba(255, 255, 255, 0.9);
}

.term-stamp.full {
  color: #2563eb;
  border-color: #2563eb;
  background: rgba(255, 255, 255, 0.92);
}

.term-stamp.hot {
  color: #dc2626;
  border-color: #dc2626;
  background: rgba(255, 255, 255, 0.92);
}

.term-stamp.open {
  color: #16a34a;
  border-color: #16a34a;
  background: rgba(255, 255, 255, 0.92);
}

/* ===== Perks ===== */
.perks {
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 80px 0;
}

.perks-header {
  text-align: center;
  margin-bottom: 56px;
}

.perks-header .section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.perks-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.perk-card {
  text-align: center;
  padding: 36px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.perk-card:hover {
  border-color: var(--border-gold);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.perk-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 20px;
  color: var(--gold);
  padding: 12px;
  background: var(--gold-dim);
  border-radius: 50%;
}

.perk-icon svg {
  width: 100%;
  height: 100%;
}

.perk-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.perk-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Features ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  padding: 32px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.feature-card:hover {
  border-color: var(--border-gold);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
  color: var(--gold);
}

.feature-icon svg {
  width: 100%;
  height: 100%;
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Open Course ===== */
.opencourse {
  background: var(--bg-primary);
}

.opencourse-preview {
  display: grid;
  grid-template-columns: 1.45fr 1fr;
  gap: 24px;
  align-items: stretch;
}

.opencourse-preview.is-single {
  grid-template-columns: 1fr;
  max-width: 820px;
  margin: 0 auto;
}

.opencourse-rail {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.opencourse-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.opencourse-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}

.opencourse-card:hover {
  border-color: var(--border-gold);
  transform: translateY(-4px);
}

.opencourse-card--lead {
  display: flex;
  flex-direction: column;
}

.opencourse-card--lead .opencourse-player {
  flex: 1;
  padding-top: 0;
  min-height: 280px;
}

.opencourse-card--rail {
  display: grid;
  grid-template-columns: 168px 1fr;
  transform: none;
}

.opencourse-card--rail:hover {
  transform: none;
}

.opencourse-card--rail .opencourse-player {
  padding-top: 0;
  min-height: 100%;
}

.opencourse-card--rail .opencourse-body {
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.opencourse-card--rail .opencourse-title {
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.opencourse-card--rail .opencourse-summary {
  display: none;
}

.opencourse-player {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  background: #000;
}

.opencourse-player iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.opencourse-poster {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  cursor: pointer;
  color: #000;
  background:
    radial-gradient(ellipse at 28% 18%, rgba(212, 175, 55, 0.2), transparent 52%),
    linear-gradient(180deg, #1c1c1c 0%, #0d0d0d 100%);
  background-size: cover;
  background-position: center;
}

.opencourse-poster.has-cover {
  background-color: #0d0d0d;
}

.opencourse-poster.has-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.15), rgba(0, 0, 0, 0.45));
  pointer-events: none;
  z-index: 0;
}

.opencourse-poster:hover .opencourse-play-icon,
.opencourse-poster:focus-visible .opencourse-play-icon {
  transform: scale(1.08);
  box-shadow: 0 8px 28px var(--gold-glow);
}

.opencourse-play-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  transform: translate(-50%, -50%);
  transition: transform var(--transition), box-shadow var(--transition);
  z-index: 1;
}

.opencourse-play-icon svg {
  width: 26px;
  height: 26px;
  margin-left: 3px;
}

.opencourse-card--rail .opencourse-play-icon {
  width: 44px;
  height: 44px;
}

.opencourse-card--rail .opencourse-play-icon svg {
  width: 18px;
  height: 18px;
}

.opencourse-body {
  padding: 22px 24px 26px;
}

.opencourse-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.4;
}

.opencourse-summary {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 14px;
}

.opencourse-link {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--gold);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}

.opencourse-link:hover {
  border-bottom-color: var(--gold);
}

.opencourse-more {
  display: flex;
  justify-content: center;
  margin-top: 40px;
}

.opencourse-list {
  padding-top: 64px;
}

.opencourse-empty {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.page-banner {
  padding: 140px 0 36px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.page-banner-back {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.page-banner-back:hover {
  color: var(--gold);
}

.page-banner .section-title {
  margin-bottom: 12px;
}

.page-banner .section-desc {
  margin: 0;
}

@media (max-width: 900px) {
  .opencourse-preview {
    grid-template-columns: 1fr;
  }

  .opencourse-card--lead .opencourse-player {
    min-height: 0;
    padding-top: 56.25%;
    flex: none;
  }
}

@media (max-width: 768px) {
  .opencourse-grid {
    grid-template-columns: 1fr;
  }

  .opencourse-card--rail {
    grid-template-columns: 1fr;
  }

  .opencourse-card--rail .opencourse-player {
    padding-top: 56.25%;
    min-height: 0;
  }
}

/* ===== Teachers ===== */
.teachers {
  background: var(--bg-secondary);
}

.teachers-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.teacher-card {
  display: flex;
  gap: 32px;
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition);
}

.teacher-card:hover {
  border-color: var(--border-gold);
}

.teacher-avatar {
  flex-shrink: 0;
  position: relative;
}

.avatar-placeholder {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold-dim), rgba(212, 175, 55, 0.05));
  border: 2px solid var(--border-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
  color: var(--gold);
}

.teacher-badge {
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gold);
  color: #000;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 100px;
  white-space: nowrap;
}

.teacher-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.teacher-title {
  font-size: 0.85rem;
  color: var(--gold);
  margin-bottom: 16px;
}

.teacher-bio {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.teacher-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.teacher-tags li {
  font-size: 0.75rem;
  padding: 4px 12px;
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text-secondary);
}

/* ===== Curriculum ===== */
.modules-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.module-card {
  position: relative;
  padding: 28px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
  overflow: hidden;
}

.module-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.module-card:hover {
  border-color: var(--border-gold);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.module-card:hover::before {
  opacity: 1;
}

.module-num {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.module-icon {
  width: 36px;
  height: 36px;
  color: var(--gold);
  margin-bottom: 16px;
  opacity: 0.8;
}

.module-icon svg {
  width: 100%;
  height: 100%;
}

.module-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.module-subtitle {
  font-size: 0.8rem;
  color: var(--gold);
  margin-bottom: 16px;
  opacity: 0.8;
}

.module-topics li {
  font-size: 0.8rem;
  color: var(--text-secondary);
  padding: 4px 0;
  padding-left: 14px;
  position: relative;
  line-height: 1.5;
}

.module-topics li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 11px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--gold);
  opacity: 0.5;
}

/* ===== Path ===== */
.path {
  background: var(--bg-secondary);
}

.path-timeline {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  max-width: 1000px;
  margin: 0 auto;
}

.path-step {
  flex: 1;
  text-align: center;
  padding: 0 12px;
}

.path-dot {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--gold);
  color: var(--gold);
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  transition: all var(--transition);
}

.path-step:hover .path-dot {
  background: var(--gold);
  color: #000;
  box-shadow: 0 0 20px var(--gold-glow);
}

.path-step h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.path-step p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.path-connector {
  flex-shrink: 0;
  width: 40px;
  height: 2px;
  background: linear-gradient(90deg, var(--border-gold), var(--gold), var(--border-gold));
  margin-top: 24px;
}

/* ===== Audience ===== */
.audience-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.audience-list li {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.audience-list li:last-child {
  border-bottom: none;
}

.check {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  background: var(--gold-dim);
  color: var(--gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
}

.audience-list strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 4px;
}

.audience-list p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.audience-quote {
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  position: relative;
}

.audience-quote::before {
  content: '\201C';
  position: absolute;
  top: 16px;
  left: 24px;
  font-size: 4rem;
  color: var(--gold);
  opacity: 0.2;
  font-family: var(--font-display);
  line-height: 1;
}

.audience-quote blockquote {
  font-size: 1.15rem;
  line-height: 2;
  color: var(--text-secondary);
  font-style: italic;
  position: relative;
  z-index: 1;
}

.audience-quote blockquote strong {
  color: var(--gold);
  font-style: normal;
}

.audience-quote cite {
  display: block;
  margin-top: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: normal;
}

/* ===== CTA ===== */
.cta {
  padding: 120px 0 80px;
}

.cta-panel {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 0;
  background: linear-gradient(135deg, var(--bg-card), var(--bg-card-hover));
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.cta-glow {
  position: absolute;
  top: -30%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--gold-glow) 0%, transparent 70%);
  opacity: 0.2;
  pointer-events: none;
}

.cta-left {
  padding: 56px 48px;
  position: relative;
  border-right: 1px solid var(--border);
}

.cta-title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 12px;
}

.cta-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.8;
}

.cta-right {
  padding: 56px 48px;
  position: relative;
}

.cta-benefits li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.cta-benefits li:last-child {
  border-bottom: none;
}

.cta-benefits strong {
  font-size: 0.95rem;
  color: var(--gold);
}

.cta-benefits span {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.cta-slogan {
  text-align: center;
  margin-top: 48px;
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--border);
  padding-top: 60px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-tagline {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 12px;
  max-width: 280px;
}

.footer-links {
  display: flex;
  gap: 60px;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.footer-col a {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 4px 0;
  transition: color var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 24px 0;
}

.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.disclaimer {
  max-width: 500px;
  text-align: right;
}

/* ===== Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== Responsive ===== */
@media (max-width: 1200px) {
  .terms-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .perks-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .modules-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cta-panel {
    grid-template-columns: 1fr;
  }

  .cta-left {
    border-right: none;
    border-bottom: 1px solid var(--border);
    text-align: center;
  }

  .path-timeline {
    flex-direction: column;
    align-items: center;
    gap: 0;
  }

  .path-connector {
    width: 2px;
    height: 30px;
    margin: 0;
  }

  .path-step {
    max-width: 320px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    opacity: 0;
    transition: all var(--transition);
    pointer-events: none;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .menu-toggle {
    display: flex;
  }

  .menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hide-mobile {
    display: none;
  }

  .hero-stats {
    flex-direction: column;
    gap: 20px;
    padding: 24px;
  }

  .terms-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .perks-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat-divider {
    width: 40px;
    height: 1px;
  }

  .teachers-grid {
    grid-template-columns: 1fr;
  }

  .teacher-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .teacher-tags {
    justify-content: center;
  }

  .modules-grid {
    grid-template-columns: 1fr;
  }

  .audience-wrapper {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
  }

  .footer-bottom .container {
    flex-direction: column;
    text-align: center;
  }

  .disclaimer {
    text-align: center;
  }
}

@media (max-width: 480px) {
  .features-grid {
    grid-template-columns: 1fr;
  }

  .terms-grid {
    grid-template-columns: 1fr;
  }

  .perks-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 280px;
  }

  .cta-left,
  .cta-right {
    padding: 36px 24px;
  }
}

/* Enroll QR modal */
body.enroll-modal-open {
  overflow: hidden;
}

.enroll-modal {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.enroll-modal[hidden] {
  display: none !important;
}

.enroll-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 8, 8, 0.72);
  backdrop-filter: blur(4px);
}

.enroll-modal-panel {
  position: relative;
  width: min(100%, 380px);
  padding: 36px 28px 32px;
  border: 1px solid rgba(212, 175, 55, 0.28);
  background:
    radial-gradient(ellipse at 50% 0%, rgba(212, 175, 55, 0.14), transparent 55%),
    linear-gradient(180deg, #1a1a1a 0%, #101010 100%);
  color: var(--text, #f2f2f2);
  text-align: center;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.45);
  animation: enroll-in 0.28s ease-out;
}

@keyframes enroll-in {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.enroll-modal-close {
  position: absolute;
  top: 10px;
  right: 14px;
  border: 0;
  background: transparent;
  color: rgba(255, 255, 255, 0.55);
  font-size: 1.75rem;
  line-height: 1;
  cursor: pointer;
}

.enroll-modal-close:hover,
.enroll-modal-close:focus-visible {
  color: var(--gold, #d4af37);
}

.enroll-modal-title {
  margin: 8px 0 8px;
  font-family: "Playfair Display", "Noto Sans SC", serif;
  font-size: 1.45rem;
  font-weight: 700;
}

.enroll-modal-desc {
  margin: 0 0 22px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.92rem;
}

.enroll-modal-body {
  min-height: 260px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.enroll-modal-loading,
.enroll-modal-error {
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.95rem;
}

.enroll-modal-error {
  color: #e8a0a0;
}

.enroll-qr-wrap {
  padding: 12px;
  background: #fff;
}

.enroll-qr {
  display: block;
  width: 220px;
  height: 220px;
  object-fit: contain;
}

.enroll-agent-name {
  margin: 16px 0 0;
  font-size: 0.95rem;
  color: var(--gold, #d4af37);
  letter-spacing: 0.04em;
}