/* ============================================
   GAIFC — Dark Luxury Theme
   Obsidian Black + Cyber Green + Titanium Silver
   ============================================ */

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

/* ---------- CSS Variables ---------- */
:root {
  --primary: #00f5a0;
  --primary-dark: #00d68f;
  --primary-dim: rgba(0, 245, 160, 0.15);
  --primary-glow: rgba(0, 245, 160, 0.25);
  --accent: #00d9ff;
  --accent-gradient: linear-gradient(135deg, #00f5a0 0%, #00d9ff 100%);
  --gold: #c9a84c;
  --silver: #8b949e;
  --bg: #0a0a0f;
  --bg-elevated: #12141a;
  --bg-card: #161921;
  --bg-card-hover: #1c1f2a;
  --bg-glass: rgba(22, 25, 33, 0.7);
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-tertiary: #484f58;
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(0, 245, 160, 0.2);
  --card-shadow: 0 0 0 1px var(--border);
  --card-shadow-hover: 0 0 0 1px var(--border-hover), 0 8px 40px rgba(0, 0, 0, 0.4);
  --glow-sm: 0 0 20px rgba(0, 245, 160, 0.1);
  --glow-md: 0 0 40px rgba(0, 245, 160, 0.15);
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --max-width: 1200px;
  --nav-height: 64px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover { color: var(--accent); }

img { max-width: 100%; display: block; }
ul, ol { list-style: none; }

/* ---------- Particle Canvas ---------- */
#particles-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ---------- Typography ---------- */
.section-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-title {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.section-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 56px;
  line-height: 1.7;
  font-weight: 400;
}

/* ---------- Layout ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.section {
  padding: 120px 0;
  position: relative;
}

.section--alt {
  background: var(--bg-elevated);
}

.section--dark {
  background: linear-gradient(180deg, #0d1117 0%, #161921 100%);
}

.section--dark .section-label { color: var(--primary); }
.section--dark .section-subtitle { color: var(--text-secondary); }

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

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(10, 10, 15, 0.7);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: background 0.3s;
}

.nav__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
  color: var(--text-primary);
  letter-spacing: 1px;
}

.nav__logo-icon {
  width: 36px;
  height: 36px;
  background: var(--accent-gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0a0a0f;
  font-size: 14px;
  font-weight: 900;
  letter-spacing: -0.5px;
}

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

.nav__link {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
  position: relative;
  letter-spacing: 0.3px;
}

.nav__link:hover,
.nav__link--active {
  color: var(--text-primary);
}

.nav__link--active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-gradient);
  border-radius: 1px;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-switch {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.lang-switch__btn {
  padding: 6px 12px;
  font-size: 11px;
  font-weight: 600;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font-sans);
  letter-spacing: 0.5px;
}

.lang-switch__btn--active {
  background: var(--primary);
  color: #0a0a0f;
}

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

.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: all 0.3s;
}

.nav__mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 15, 0.98);
  backdrop-filter: blur(20px);
  padding: 24px;
  z-index: 999;
}

.nav__mobile.active {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.nav__mobile .nav__link {
  font-size: 20px;
  padding: 14px 0;
  display: block;
  border-bottom: 1px solid var(--border);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all 0.3s;
  font-family: var(--font-sans);
  white-space: nowrap;
  letter-spacing: 0.3px;
}

.btn--primary {
  background: var(--accent-gradient);
  color: #0a0a0f;
  box-shadow: 0 0 20px rgba(0, 245, 160, 0.15);
}

.btn--primary:hover {
  color: #0a0a0f;
  box-shadow: 0 0 30px rgba(0, 245, 160, 0.3);
  transform: translateY(-1px);
}

.btn--secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn--secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--text-primary);
}

.btn--outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid rgba(0, 245, 160, 0.3);
}

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

.btn--white {
  background: #fff;
  color: #0a0a0f;
}

.btn--white:hover {
  background: rgba(255, 255, 255, 0.9);
  color: #0a0a0f;
  transform: translateY(-1px);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

.btn--large {
  padding: 16px 36px;
  font-size: 15px;
  border-radius: var(--radius-md);
}

.btn-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ---------- iOS Icon System ---------- */
.ios-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
}

.ios-icon--sm { width: 44px; height: 44px; border-radius: 11px; }
.ios-icon--lg { width: 72px; height: 72px; border-radius: 18px; }
.ios-icon--xl { width: 96px; height: 96px; border-radius: 24px; }

.ios-icon--blue {
  background: linear-gradient(135deg, #0071e3 0%, #00d9ff 100%);
  color: #fff;
  box-shadow: 0 4px 20px rgba(0, 113, 227, 0.3);
}

.ios-icon--purple {
  background: linear-gradient(135deg, #5856d6 0%, #af52de 100%);
  color: #fff;
  box-shadow: 0 4px 20px rgba(88, 86, 214, 0.3);
}

.ios-icon--green {
  background: linear-gradient(135deg, #00c853 0%, #00f5a0 100%);
  color: #0a0a0f;
  box-shadow: 0 4px 20px rgba(0, 245, 160, 0.3);
}

.ios-icon--orange {
  background: linear-gradient(135deg, #ff6d00 0%, #ffab00 100%);
  color: #0a0a0f;
  box-shadow: 0 4px 20px rgba(255, 109, 0, 0.3);
}

.ios-icon--red {
  background: linear-gradient(135deg, #ff3b30 0%, #ff6b6b 100%);
  color: #fff;
  box-shadow: 0 4px 20px rgba(255, 59, 48, 0.3);
}

.ios-icon--teal {
  background: linear-gradient(135deg, #00bcd4 0%, #64ffda 100%);
  color: #0a0a0f;
  box-shadow: 0 4px 20px rgba(0, 188, 212, 0.3);
}

.ios-icon--pink {
  background: linear-gradient(135deg, #ff2d55 0%, #ff6b9d 100%);
  color: #fff;
  box-shadow: 0 4px 20px rgba(255, 45, 85, 0.3);
}

.ios-icon--indigo {
  background: linear-gradient(135deg, #5856d6 0%, #7b7fec 100%);
  color: #fff;
  box-shadow: 0 4px 20px rgba(88, 86, 214, 0.3);
}

.ios-icon--gradient {
  background: var(--accent-gradient);
  color: #0a0a0f;
  box-shadow: var(--glow-md);
}

.ios-icon svg {
  width: 28px; height: 28px;
  fill: none; stroke: currentColor;
  stroke-width: 2; stroke-linecap: round; stroke-linejoin: round;
}
.ios-icon--sm svg { width: 22px; height: 22px; }
.ios-icon--lg svg { width: 36px; height: 36px; }
.ios-icon--xl svg { width: 48px; height: 48px; }

/* ---------- Cards ---------- */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 32px;
  border: 1px solid var(--border);
  transition: all 0.4s;
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  box-shadow: var(--glow-sm);
  transform: translateY(-3px);
}

.card__icon { margin-bottom: 20px; }
.card__title { font-size: 18px; font-weight: 700; margin-bottom: 8px; line-height: 1.3; }
.card__desc { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.card__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  background: var(--primary-dim);
  color: var(--primary);
  font-size: 11px;
  font-weight: 600;
  border-radius: 20px;
  letter-spacing: 0.5px;
}

/* Feature Card */
.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 36px;
  border: 1px solid var(--border);
  transition: all 0.4s;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity 0.4s;
}

.feature-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--glow-sm);
  transform: translateY(-4px);
}

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

.feature-card__header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.feature-card__title { font-size: 20px; font-weight: 700; }
.feature-card__subtitle { font-size: 13px; color: var(--text-tertiary); font-weight: 500; letter-spacing: 0.5px; }
.feature-card__body { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

.feature-card__list { margin-top: 16px; }
.feature-card__list li {
  padding: 8px 0; font-size: 14px; color: var(--text-secondary);
  display: flex; align-items: center; gap: 10px;
}
.feature-card__list li::before {
  content: ''; width: 5px; height: 5px;
  background: var(--primary); border-radius: 50%; flex-shrink: 0;
  box-shadow: 0 0 6px var(--primary);
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-height) + 80px) 24px 80px;
  position: relative;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(0, 245, 160, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 70%, rgba(0, 217, 255, 0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(88, 86, 214, 0.03) 0%, transparent 60%);
  z-index: 0;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 820px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: var(--primary-dim);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  border-radius: 24px;
  margin-bottom: 32px;
  border: 1px solid rgba(0, 245, 160, 0.15);
  letter-spacing: 0.5px;
}

.hero__badge-dot {
  width: 6px; height: 6px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
  box-shadow: 0 0 8px var(--primary);
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 8px var(--primary); }
  50% { opacity: 0.4; box-shadow: 0 0 4px var(--primary); }
}

.hero__title {
  font-size: 72px;
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -3px;
  margin-bottom: 24px;
  color: var(--text-primary);
}

.hero__title-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__desc {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 40px;
  line-height: 1.7;
  font-weight: 400;
}

/* ---------- Stats ---------- */
.stats {
  display: flex;
  justify-content: center;
  gap: 64px;
  padding: 48px 0;
  flex-wrap: wrap;
}

.stat { text-align: center; }

.stat__number {
  font-size: 52px;
  font-weight: 900;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  letter-spacing: -2px;
}

.stat__label {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-top: 6px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ---------- Divider Line ---------- */
.divider {
  width: 60px;
  height: 2px;
  background: var(--accent-gradient);
  margin: 0 auto 32px;
  border-radius: 1px;
}

/* ---------- Pricing ---------- */
.pricing-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  max-width: 1100px;
  margin: 0 auto;
}

.pricing-grid .pricing-card {
  flex: 0 1 calc(33.333% - 12px);
  min-width: 240px;
}

.pricing-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  border: 1px solid var(--border);
  text-align: center;
  transition: all 0.4s;
  position: relative;
}

.pricing-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--glow-sm);
  transform: translateY(-4px);
}

.pricing-card--featured {
  border-color: rgba(0, 245, 160, 0.3);
  box-shadow: 0 0 30px rgba(0, 245, 160, 0.08);
}

.pricing-card--featured::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--accent-gradient);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.pricing-card__badge {
  position: absolute;
  top: -12px; left: 50%;
  transform: translateX(-50%);
  padding: 4px 16px;
  background: var(--accent-gradient);
  color: #0a0a0f;
  font-size: 10px; font-weight: 800;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.pricing-card__name { font-size: 16px; font-weight: 700; margin-bottom: 8px; margin-top: 8px; }
.pricing-card__price { font-size: 32px; font-weight: 900; margin-bottom: 4px; letter-spacing: -1px; }
.pricing-card__price span { font-size: 13px; font-weight: 500; color: var(--text-tertiary); }
.pricing-card__period { font-size: 12px; color: var(--text-tertiary); margin-bottom: 20px; }
.pricing-card__features { text-align: left; margin-bottom: 24px; }

.pricing-card__features li {
  padding: 6px 0; font-size: 13px; color: var(--text-secondary);
  display: flex; align-items: center; gap: 8px;
}
.pricing-card__features li svg { width: 16px; height: 16px; color: var(--primary); flex-shrink: 0; }

/* ---------- Event Banner ---------- */
.event-banner {
  background: linear-gradient(135deg, rgba(0, 245, 160, 0.05) 0%, rgba(0, 217, 255, 0.05) 100%);
  border: 1px solid rgba(0, 245, 160, 0.1);
  border-radius: var(--radius-xl);
  padding: 64px 56px;
  color: var(--text-primary);
  position: relative;
  overflow: hidden;
}

.event-banner__bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(0, 245, 160, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 20% 80%, rgba(0, 217, 255, 0.06) 0%, transparent 50%);
}

.event-banner__content { position: relative; z-index: 1; }

.event-banner__label {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 18px;
  background: var(--primary-dim);
  border: 1px solid rgba(0, 245, 160, 0.15);
  border-radius: 24px;
  font-size: 12px; font-weight: 600;
  margin-bottom: 24px;
  color: var(--primary);
  letter-spacing: 0.5px;
}

.event-banner__title { font-size: 44px; font-weight: 900; margin-bottom: 8px; line-height: 1.1; letter-spacing: -1px; }
.event-banner__subtitle { font-size: 17px; color: var(--text-secondary); margin-bottom: 36px; }

.event-meta { display: flex; flex-wrap: wrap; gap: 28px; margin-bottom: 36px; }

.event-meta__item {
  display: flex; align-items: center; gap: 12px;
  font-size: 15px; color: var(--text-secondary);
}

.event-meta__icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
}

/* ---------- Org Chart ---------- */
.org-chart { display: flex; flex-direction: column; align-items: center; gap: 24px; padding: 40px 0; }

.org-chart__root {
  background: var(--accent-gradient);
  color: #0a0a0f;
  padding: 20px 48px;
  border-radius: var(--radius-md);
  font-size: 18px; font-weight: 800;
  text-align: center;
  box-shadow: var(--glow-md);
  letter-spacing: 0.5px;
}

.org-chart__connector { width: 2px; height: 32px; background: rgba(0, 245, 160, 0.2); }

.org-chart__branches { display: flex; gap: 24px; flex-wrap: wrap; justify-content: center; }

.org-chart__branch {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 24px 32px;
  text-align: center;
  min-width: 200px;
  transition: all 0.4s;
}

.org-chart__branch:hover {
  border-color: var(--border-hover);
  box-shadow: var(--glow-sm);
  transform: translateY(-2px);
}

.org-chart__branch-title { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.org-chart__branch-desc { font-size: 13px; color: var(--text-secondary); }

/* ---------- Footer ---------- */
.footer {
  background: #06060a;
  color: var(--text-secondary);
  padding: 80px 0 32px;
  border-top: 1px solid var(--border);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 48px;
  margin-bottom: 48px;
}

.footer__brand {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 16px;
  color: var(--text-primary);
  font-weight: 800; font-size: 18px;
}

.footer__desc { font-size: 14px; color: var(--text-tertiary); line-height: 1.7; max-width: 300px; }

.footer__title {
  font-size: 11px; font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 20px;
}

.footer__links { display: flex; flex-direction: column; gap: 12px; }

.footer__link {
  font-size: 14px; color: var(--text-tertiary);
  transition: color 0.2s;
}

.footer__link:hover { color: var(--primary); }

.footer__bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12px; color: var(--text-tertiary);
}

/* ---------- Page Header ---------- */
.page-header {
  padding: calc(var(--nav-height) + 80px) 0 60px;
  text-align: center;
  background: var(--bg-elevated);
  position: relative;
  overflow: hidden;
}

.page-header__bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(0, 245, 160, 0.04) 0%, transparent 60%);
}

.page-header__content { position: relative; z-index: 1; }
.page-header__title { font-size: 52px; font-weight: 900; margin-bottom: 16px; letter-spacing: -1.5px; }
.page-header__desc { font-size: 17px; color: var(--text-secondary); max-width: 560px; margin: 0 auto; font-weight: 400; }

/* ---------- Info List ---------- */
.info-list { max-width: 800px; margin: 0 auto; }

.info-list__item {
  display: flex; gap: 20px; padding: 24px 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
}
.info-list__item:last-child { border-bottom: none; }
.info-list__content h3 { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.info-list__content p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }

/* ---------- Accordion ---------- */
.accordion { max-width: 800px; margin: 0 auto; }
.accordion__item { border-bottom: 1px solid var(--border); }

.accordion__header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 22px 0; cursor: pointer;
  font-size: 16px; font-weight: 600; color: var(--text-primary);
  background: none; border: none; width: 100%; text-align: left;
  font-family: var(--font-sans);
}

.accordion__icon { font-size: 20px; color: var(--text-tertiary); transition: transform 0.3s; }
.accordion__item.active .accordion__icon { transform: rotate(45deg); color: var(--primary); }

.accordion__body { max-height: 0; overflow: hidden; transition: max-height 0.4s; }
.accordion__body-inner { padding: 0 0 24px; font-size: 14px; color: var(--text-secondary); line-height: 1.8; }
.accordion__item.active .accordion__body { max-height: 1200px; }

/* ---------- CTA Section ---------- */
.cta-section {
  text-align: center;
  padding: 120px 24px;
  position: relative;
  overflow: hidden;
  background: var(--bg-elevated);
}

.cta-section::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 50% 50%, rgba(0, 245, 160, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 30% 80%, rgba(0, 217, 255, 0.05) 0%, transparent 50%);
}

.cta-section__content { position: relative; z-index: 1; }
.cta-section__title { font-size: 44px; font-weight: 900; margin-bottom: 16px; letter-spacing: -1px; }
.cta-section__desc { font-size: 17px; color: var(--text-secondary); max-width: 480px; margin: 0 auto 36px; }

/* ---------- Eco Sections ---------- */
.eco-section { padding: 100px 0; border-bottom: 1px solid var(--border); }
.eco-section:last-child { border-bottom: none; }

.eco-header { display: flex; align-items: flex-start; gap: 24px; margin-bottom: 36px; }
.eco-header__text h2 { font-size: 32px; font-weight: 900; margin-bottom: 8px; letter-spacing: -0.5px; }
.eco-header__text p { font-size: 15px; color: var(--text-secondary); }

.eco-highlights {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px; margin-top: 24px;
}

.eco-highlight {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px; text-align: center;
}

.eco-highlight__value { font-size: 24px; font-weight: 900; color: var(--primary); }
.eco-highlight__label { font-size: 12px; color: var(--text-tertiary); margin-top: 4px; }

/* ---------- Agenda ---------- */
.agenda { max-width: 720px; margin: 0 auto; }

.agenda__item {
  display: flex; gap: 28px; padding: 24px 0;
  border-bottom: 1px solid var(--border);
}

.agenda__time {
  min-width: 110px; font-size: 13px; font-weight: 700;
  color: var(--primary); padding-top: 3px;
  font-variant-numeric: tabular-nums;
}

.agenda__content h4 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.agenda__content p { font-size: 13px; color: var(--text-secondary); }

/* ---------- Contact form ---------- */
.contact-form { max-width: 560px; margin: 0 auto; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 8px; color: var(--text-secondary); }

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%; padding: 14px 16px;
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  font-family: var(--font-sans);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: rgba(0, 245, 160, 0.4);
  box-shadow: 0 0 0 3px rgba(0, 245, 160, 0.08);
}

.form-group textarea { min-height: 120px; resize: vertical; }
.form-group select { cursor: pointer; }
.form-group select option { background: var(--bg-card); color: var(--text-primary); }

/* ---------- Animations ---------- */
@keyframes slide-up {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-on-scroll { opacity: 0; }
.animate-on-scroll.animated { animation: slide-up 0.7s ease forwards; }

.delay-1 { animation-delay: 0.1s !important; }
.delay-2 { animation-delay: 0.2s !important; }
.delay-3 { animation-delay: 0.3s !important; }
.delay-4 { animation-delay: 0.4s !important; }
.delay-5 { animation-delay: 0.5s !important; }
.delay-6 { animation-delay: 0.6s !important; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .section-title { font-size: 36px; }
  .hero__title { font-size: 52px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 80px 0; }
  .section-title { font-size: 28px; }
  .hero__title { font-size: 36px; letter-spacing: -1px; }
  .hero__desc { font-size: 16px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .nav__links { display: none; }
  .nav__hamburger { display: flex; }
  .stats { gap: 32px; }
  .stat__number { font-size: 40px; }
  .event-banner { padding: 40px 24px; border-radius: var(--radius-md); }
  .event-banner__title { font-size: 28px; }
  .event-meta { flex-direction: column; gap: 16px; }
  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .footer__bottom { flex-direction: column; gap: 12px; text-align: center; }
  .pricing-grid .pricing-card { flex: 0 1 100%; min-width: 0; }
  .page-header__title { font-size: 32px; }
  .cta-section__title { font-size: 28px; }
  .btn-group { flex-direction: column; align-items: center; }
}

/* ---------- Utility ---------- */
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.mb-48 { margin-bottom: 48px; }

/* ---------- Hero Slideshow ---------- */
.hero__slideshow {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.8s ease-in-out;
  background-size: cover;
  background-position: center;
}

.hero__slide::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    rgba(10, 10, 15, 0.55) 0%,
    rgba(10, 10, 15, 0.45) 40%,
    rgba(10, 10, 15, 0.7) 80%,
    rgba(10, 10, 15, 0.95) 100%);
}

.hero__slide--active {
  opacity: 1;
}

.hero__slide--1 {
  background-image: url("../images/hero-bg-1.jpg");
}

.hero__slide--2 {
  background-image: url("../images/hero-bg-2.jpg");
}

.hero__slide--3 {
  background-image: url("../images/hero-bg-3.jpg");
}

/* Slide indicators */
.hero__indicators {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 3;
}

.hero__indicator {
  width: 32px;
  height: 3px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: all 0.4s;
}

.hero__indicator--active {
  background: var(--primary);
  width: 48px;
  box-shadow: 0 0 8px var(--primary);
}

/* Forum hero with photo background */
.hero--forum {
  background: url("../images/forum-hero.jpg") center/cover no-repeat;
}

.hero--forum .hero__bg {
  background: linear-gradient(180deg,
    rgba(10, 10, 15, 0.6) 0%,
    rgba(10, 10, 15, 0.5) 40%,
    rgba(10, 10, 15, 0.75) 80%,
    rgba(10, 10, 15, 0.95) 100%);
}

@media (max-width: 768px) {
  .hero__indicators { bottom: 24px; }
}