:root {
  --help-bg: #0B0E12;
  --help-bg-container: #16191C;
  --help-bg-elevated: #1E2126;
  --help-accent: #1BC1CF;
  --help-accent-rgb: 27, 193, 207;
  --help-text-primary: #E8E8E8;
  --help-text-label: rgba(232, 232, 232, 0.6);
  --help-text-muted: rgba(232, 232, 232, 0.4);
  --help-border: rgba(232, 232, 232, 0.08);
  --help-border-strong: rgba(232, 232, 232, 0.15);
  --help-radius: 8px;
  --help-radius-sm: 4px;
  --help-font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

.help-page,
.about-page {
  background-color: var(--help-bg);
  color: var(--help-text-primary);
  font-family: var(--help-font);
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

.help-page *,
.about-page * {
  box-sizing: border-box;
}

.help-topbar,
.about-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 60px;
  background-color: var(--help-bg);
  border-bottom: 1px solid var(--help-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.help-topbar-logo,
.about-topbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--help-text-primary);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.help-topbar-logo svg,
.about-topbar-logo svg {
  display: block;
}

.help-topbar-nav,
.about-topbar-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.help-topbar-nav a,
.about-topbar-nav a {
  color: var(--help-text-label);
  text-decoration: none;
  font-size: 13px;
  font-weight: 400;
  transition: color 0.2s;
}

.help-topbar-nav a:hover,
.about-topbar-nav a:hover {
  color: var(--help-text-primary);
}

.help-topbar-nav a.active,
.about-topbar-nav a.active {
  color: var(--help-text-primary);
}

.help-wrapper,
.about-wrapper {
  max-width: 860px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.help-hero,
.about-hero {
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--help-border);
}

.help-hero h1,
.about-hero h1 {
  font-size: 28px;
  font-weight: 500;
  line-height: 1.25;
  color: var(--help-text-primary);
  margin: 0 0 12px;
  letter-spacing: -0.01em;
}

.help-hero p,
.about-hero p {
  font-size: 14px;
  color: var(--help-text-label);
  margin: 0;
  max-width: 600px;
  line-height: 1.6;
}

.help-section,
.about-section {
  margin-bottom: 48px;
}

.help-section h2,
.about-section h2 {
  font-size: 13px;
  font-weight: 500;
  color: var(--help-text-label);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--help-border);
}

.about-section-heading {
  font-size: 18px;
  font-weight: 500;
  color: var(--help-text-primary);
  margin: 0 0 16px;
  letter-spacing: -0.005em;
}

.about-section p {
  font-size: 14px;
  color: var(--help-text-label);
  margin: 0 0 14px;
  line-height: 1.7;
}

.about-section p:last-child {
  margin-bottom: 0;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.faq-item {
  background-color: var(--help-bg-container);
  border: 1px solid var(--help-border);
  border-radius: var(--help-radius);
  overflow: hidden;
  transition: border-color 0.15s;
}

.faq-item:hover {
  border-color: var(--help-border-strong);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  color: var(--help-text-primary);
  line-height: 1.4;
  user-select: none;
  transition: background-color 0.15s;
  list-style: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::marker {
  display: none;
}

.faq-item[open] > .faq-question {
  color: var(--help-accent);
  border-bottom: 1px solid var(--help-border);
}

.faq-chevron {
  flex-shrink: 0;
  width: 14px;
  height: 14px;
  color: var(--help-text-muted);
  transition: transform 0.2s, color 0.2s;
}

.faq-item[open] .faq-chevron {
  transform: rotate(180deg);
  color: var(--help-accent);
}

.faq-answer {
  padding: 16px 20px 20px;
  font-size: 13px;
  color: var(--help-text-label);
  line-height: 1.7;
}

.faq-answer p {
  margin: 0 0 12px;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

.faq-answer a {
  color: var(--help-accent);
  text-decoration: none;
}

.faq-answer a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.help-inline-link,
.about-inline-link {
  color: var(--help-accent);
  text-decoration: none;
  transition: opacity 0.15s;
}

.help-inline-link:hover,
.about-inline-link:hover {
  opacity: 0.8;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.about-features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 600px) {
  .about-features-grid {
    grid-template-columns: 1fr;
  }
}

.about-feature-card {
  background-color: var(--help-bg-container);
  border: 1px solid var(--help-border);
  border-radius: var(--help-radius);
  padding: 18px 20px;
  transition: border-color 0.15s;
}

.about-feature-card:hover {
  border-color: var(--help-border-strong);
}

.about-feature-card h3 {
  font-size: 13px;
  font-weight: 500;
  color: var(--help-text-primary);
  margin: 0 0 8px;
}

.about-feature-card p {
  font-size: 12px;
  color: var(--help-text-label);
  margin: 0;
  line-height: 1.6;
}

.about-stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 12px;
}

@media (max-width: 600px) {
  .about-stat-row {
    grid-template-columns: 1fr 1fr;
  }
}

.about-stat-card {
  background-color: var(--help-bg-container);
  border: 1px solid var(--help-border);
  border-radius: var(--help-radius);
  padding: 20px 16px;
  text-align: center;
}

.about-stat-value {
  font-size: 22px;
  font-weight: 500;
  color: var(--help-accent);
  display: block;
  margin-bottom: 4px;
  letter-spacing: -0.02em;
}

.about-stat-label {
  font-size: 11px;
  color: var(--help-text-label);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.btn-home {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: rgba(var(--help-accent-rgb), 0.1);
  border: 1px solid rgba(var(--help-accent-rgb), 0.3);
  color: var(--help-accent);
  font-size: 13px;
  font-weight: 400;
  padding: 8px 18px;
  border-radius: var(--help-radius);
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s, border-color 0.15s;
  line-height: 1;
  height: 34px;
}

.btn-home:hover {
  background-color: rgba(var(--help-accent-rgb), 0.18);
  border-color: rgba(var(--help-accent-rgb), 0.5);
}

.btn-home svg {
  width: 12px;
  height: 12px;
  flex-shrink: 0;
}

.btn-secondary-action {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: transparent;
  border: 1px solid var(--help-border-strong);
  color: var(--help-text-label);
  font-size: 13px;
  font-weight: 400;
  padding: 8px 18px;
  border-radius: var(--help-radius);
  text-decoration: none;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
  line-height: 1;
  height: 34px;
}

.btn-secondary-action:hover {
  color: var(--help-text-primary);
  border-color: rgba(232, 232, 232, 0.3);
}

.page-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--help-border);
  flex-wrap: wrap;
}

.help-footer,
.about-footer {
  background-color: var(--help-bg-container);
  border-top: 1px solid var(--help-border);
  padding: 24px;
  text-align: center;
  font-size: 12px;
  color: var(--help-text-muted);
  margin-top: auto;
}

.help-footer a,
.about-footer a {
  color: var(--help-text-label);
  text-decoration: none;
  margin: 0 8px;
  transition: color 0.15s;
}

.help-footer a:hover,
.about-footer a:hover {
  color: var(--help-text-primary);
}

.help-breadcrumb,
.about-breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 32px;
  font-size: 12px;
  color: var(--help-text-muted);
}

.help-breadcrumb a,
.about-breadcrumb a {
  color: var(--help-text-label);
  text-decoration: none;
  transition: color 0.15s;
}

.help-breadcrumb a:hover,
.about-breadcrumb a:hover {
  color: var(--help-text-primary);
}

.help-breadcrumb span,
.about-breadcrumb span {
  opacity: 0.4;
}

.about-team-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

@media (max-width: 600px) {
  .about-team-grid {
    grid-template-columns: 1fr;
  }
}

.about-team-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background-color: var(--help-bg-container);
  border: 1px solid var(--help-border);
  border-radius: var(--help-radius);
  padding: 16px 18px;
}

.about-team-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: rgba(var(--help-accent-rgb), 0.15);
  border: 1px solid rgba(var(--help-accent-rgb), 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 500;
  color: var(--help-accent);
  flex-shrink: 0;
}

.about-team-info h3 {
  font-size: 13px;
  font-weight: 500;
  color: var(--help-text-primary);
  margin: 0 0 4px;
}

.about-team-info p {
  font-size: 12px;
  color: var(--help-text-label);
  margin: 0;
  line-height: 1.5;
}

.about-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.about-timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background-color: var(--help-border);
}

.about-timeline-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 0 0 24px;
  position: relative;
}

.about-timeline-item:last-child {
  padding-bottom: 0;
}

.about-timeline-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--help-accent);
  border: 2px solid var(--help-bg);
  flex-shrink: 0;
  margin-top: 4px;
  position: relative;
  z-index: 1;
  box-shadow: 0 0 0 3px rgba(var(--help-accent-rgb), 0.15);
}

.about-timeline-dot.muted {
  background-color: var(--help-bg-elevated);
  border-color: var(--help-border-strong);
  box-shadow: none;
}

.about-timeline-content {
  flex: 1;
  min-width: 0;
}

.about-timeline-year {
  font-size: 11px;
  color: var(--help-accent);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.about-timeline-content h3 {
  font-size: 13px;
  font-weight: 500;
  color: var(--help-text-primary);
  margin: 0 0 6px;
}

.about-timeline-content p {
  font-size: 13px;
  color: var(--help-text-label);
  margin: 0;
  line-height: 1.6;
}

.help-tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  background-color: rgba(var(--help-accent-rgb), 0.1);
  border: 1px solid rgba(var(--help-accent-rgb), 0.2);
  border-radius: 4px;
  font-size: 11px;
  color: var(--help-accent);
  font-weight: 500;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.help-notice {
  background-color: rgba(var(--help-accent-rgb), 0.06);
  border: 1px solid rgba(var(--help-accent-rgb), 0.2);
  border-radius: var(--help-radius);
  padding: 14px 18px;
  font-size: 13px;
  color: var(--help-text-label);
  margin-bottom: 28px;
  line-height: 1.6;
}

.help-notice a {
  color: var(--help-accent);
  text-decoration: none;
}

.help-notice a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.divider {
  height: 1px;
  background-color: var(--help-border);
  margin: 32px 0;
}

@media (max-width: 768px) {
  .help-wrapper,
  .about-wrapper {
    padding: 32px 16px 64px;
  }

  .help-hero h1,
  .about-hero h1 {
    font-size: 22px;
  }

  .help-topbar,
  .about-topbar {
    padding: 0 16px;
  }

  .help-topbar-nav,
  .about-topbar-nav {
    gap: 16px;
  }

  .about-stat-row {
    grid-template-columns: 1fr 1fr;
  }

  .page-actions {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .help-topbar-nav a:not(.btn-home),
  .about-topbar-nav a:not(.btn-home) {
    display: none;
  }

  .about-stat-row {
    grid-template-columns: 1fr;
  }

  .about-team-grid {
    grid-template-columns: 1fr;
  }

  .about-features-grid {
    grid-template-columns: 1fr;
  }

  .faq-question {
    padding: 14px 16px;
    font-size: 13px;
  }

  .faq-answer {
    padding: 14px 16px 16px;
  }
}