:root {
  --support-bg: #f7f9fd;
  --support-surface: rgba(255, 255, 255, 0.94);
  --support-border: #d9e3f3;
  --support-text: #0f172a;
  --support-muted: #52627d;
  --support-accent: #4f46e5;
  --support-accent-2: #0ea5e9;
  --support-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--support-text);
  background:
    radial-gradient(circle at 0% 0%, rgba(79, 70, 229, 0.12), transparent 28%),
    radial-gradient(circle at 100% 16%, rgba(14, 165, 233, 0.12), transparent 28%),
    linear-gradient(180deg, #f9fbff 0%, var(--support-bg) 100%);
}

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

.support-topbar,
.support-shell,
.support-footer {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
}

.support-topbar {
  margin-top: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  border-radius: 18px;
  border: 1px solid var(--support-border);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  box-shadow: var(--support-shadow);
}

.support-brand {
  color: var(--support-text);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.support-topbar-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.support-link-btn,
.support-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--support-border);
  text-decoration: none;
  color: var(--support-muted);
  font-weight: 700;
  background: #fff;
}

.support-link-btn.primary {
  color: #fff;
  border-color: transparent;
  background: linear-gradient(135deg, var(--support-accent), var(--support-accent-2));
}

.support-shell {
  padding: 42px 0 30px;
}

.support-hero {
  padding: 10px 0 26px;
}

.support-badge {
  display: inline-flex;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(79, 70, 229, 0.1);
  border: 1px solid rgba(79, 70, 229, 0.2);
  color: var(--support-accent);
  font-weight: 800;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.support-hero h1 {
  margin: 16px 0 12px;
  max-width: 760px;
  font-size: clamp(2.2rem, 5vw, 3.7rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.support-hero p {
  max-width: 720px;
  font-size: 1.02rem;
  line-height: 1.6;
  color: var(--support-muted);
}

.support-hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.support-pill {
  font-size: 0.88rem;
}

.support-grid,
.faq-sections {
  display: grid;
  gap: 16px;
}

.support-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.support-card,
.faq-group {
  border: 1px solid var(--support-border);
  border-radius: 24px;
  background: var(--support-surface);
  box-shadow: var(--support-shadow);
}

.support-card {
  padding: 22px;
}

.support-card h2,
.faq-group h2 {
  margin: 0 0 12px;
  font-size: 1.08rem;
}

.support-card p,
.support-card li,
.faq-item p {
  color: var(--support-muted);
  line-height: 1.6;
}

.support-card ul,
.support-card ol {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 10px;
}

.faq-group {
  padding: 20px;
}

.faq-group + .faq-group {
  margin-top: 0;
}

.faq-item {
  border-top: 1px solid #e9eef8;
  padding: 14px 0;
}

.faq-item:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.faq-item:last-of-type {
  padding-bottom: 0;
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  color: var(--support-text);
  padding-right: 24px;
  position: relative;
}

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

.faq-item summary::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 0;
  color: var(--support-accent);
  font-size: 1.1rem;
}

.faq-item[open] summary::after {
  content: '−';
}

.faq-item p {
  margin: 10px 0 0;
}

.support-footer {
  padding: 0 0 34px;
  text-align: center;
  color: var(--support-muted);
  font-size: 0.84rem;
}

.support-footer a {
  color: #3f4d67;
  text-decoration: none;
  font-weight: 700;
}

.support-footer a:hover {
  text-decoration: underline;
}

@media (max-width: 780px) {
  .support-grid {
    grid-template-columns: 1fr;
  }

  .support-topbar {
    position: static;
  }

  .support-topbar,
  .support-shell,
  .support-footer {
    width: min(100% - 24px, 1100px);
  }
}