:root {
  --bg-primary: #0a0e14;
  --bg-secondary: #111827;
  --bg-tertiary: #1e2329;
  --border-color: rgba(255, 255, 255, 0.08);
  --text-primary: #fff;
  --text-secondary: rgba(255, 255, 255, 0.5);
  --accent-green: #10b981;
  --accent-cyan: #06b6d4;
  --accent-red: #ef4444;
  --accent-yellow: #f0b90b;
}

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

html {
  background: #0a0e14 !important;
  background-color: #0a0e14 !important;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: #0a0e14 !important;
  background-color: #0a0e14 !important;
  color: var(--text-primary, #fff);
  min-height: 100vh;
  padding-bottom: 40px;
}

.header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  border-bottom: 1px solid var(--border-color);
  background: #111827 !important;
  background-color: #111827 !important;
  position: sticky;
  top: 0;
  z-index: 50;
}

.back-btn {
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
}

.header h1 {
  font-size: 18px;
  font-weight: 700;
}

.search-section {
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
  padding: 24px 16px;
  text-align: center;
}

.search-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.search-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 12px 16px;
  max-width: 400px;
  margin: 0 auto;
}

.search-box svg {
  color: var(--text-secondary);
  flex-shrink: 0;
}

.search-box input {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
}

.search-box input::placeholder {
  color: var(--text-secondary);
}

.container {
  padding: 16px;
}

.categories {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.category-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  color: inherit;
}

.category-card:hover {
  border-color: var(--accent-orange);
  transform: translateY(-2px);
}

.category-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
}

.category-icon.orange {
  background: rgba(245, 158, 11, 0.1);
  color: var(--accent-orange);
}

.category-icon.green {
  background: rgba(14, 203, 129, 0.1);
  color: var(--accent-green);
}

.category-icon.blue {
  background: rgba(30, 128, 255, 0.1);
  color: #1e80ff;
}

.category-icon.purple {
  background: rgba(139, 92, 246, 0.1);
  color: #8b5cf6;
}

.category-icon.red {
  background: rgba(246, 70, 93, 0.1);
  color: var(--accent-red);
}

.category-icon.yellow {
  background: rgba(240, 185, 11, 0.1);
  color: var(--accent-yellow);
}

.category-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}

.category-count {
  font-size: 12px;
  color: var(--text-secondary);
}

.section-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
}

.faq-list {
  margin-bottom: 24px;
}

.faq-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  margin-bottom: 10px;
  overflow: hidden;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
}

.faq-question svg {
  color: var(--text-secondary);
  transition: transform 0.3s;
  flex-shrink: 0;
}

.faq-item.open .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

.faq-answer-content {
  padding: 0 16px 16px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.contact-card {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(249, 115, 22, 0.1));
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
}

.contact-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.contact-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(90deg, var(--accent-orange), #ea580c);
  color: #fff;
  padding: 12px 24px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
}