:root {
  --bg-start: var(--theme-bg-start);
  --bg-end: var(--theme-bg-end);
  --panel: var(--theme-panel-strong);
  --panel-border: var(--theme-panel-border);
  --text: var(--theme-text);
  --muted: var(--theme-muted);
  --link: var(--theme-link);
  --link-hover: var(--theme-link-hover);
  --accent: var(--theme-accent);
  --shadow: var(--theme-shadow-lg);
  --section-divider: var(--theme-glass-10);
  --faq-card-border: var(--theme-glass-07);
  --faq-card-bg: var(--theme-glass-13);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--theme-font-body);
  color: var(--text);
  background: linear-gradient(140deg, var(--bg-start), var(--bg-end));
}

.help-shell {
  max-width: 980px;
  margin: 0 auto;
  padding: 1rem;
}

.help-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
  padding: 1rem;
}

.help-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  margin-bottom: 0.9rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--section-divider);
}

.help-logo {
  height: 28px;
  width: auto;
  aspect-ratio: 1200 / 520;
  display: block;
}

.brand-logo-wordmark {
  fill: var(--text);
  stroke: var(--bg-start);
}

.help-back-link {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 2px;
  font-size: 0.9rem;
  font-weight: 700;
}

.help-back-link:hover {
  color: var(--link-hover);
}

h1,
h2 {
  font-family: var(--theme-font-display);
  letter-spacing: 0.04em;
  margin: 0;
  line-height: 1;
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
}

h2 {
  margin-top: 1rem;
  font-size: clamp(1.4rem, 3vw, 2rem);
}

p {
  color: var(--muted);
  line-height: 1.45;
}

.quick-start {
  margin: 0.65rem 0 0;
  padding-left: 1.15rem;
  color: var(--muted);
  line-height: 1.45;
}

.quick-start li + li {
  margin-top: 0.35rem;
}

.faq-group {
  margin-top: 0.7rem;
  display: flex;
  flex-direction: column;
  gap: 0.48rem;
}

details {
  border: 1px solid var(--faq-card-border);
  border-radius: 12px;
  background: var(--faq-card-bg);
  overflow: hidden;
}

summary {
  cursor: pointer;
  padding: 0.7rem 0.8rem;
  font-weight: 700;
  font-size: 0.95rem;
  list-style: none;
  position: relative;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: "+";
  position: absolute;
  right: 0.8rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-size: 1rem;
}

details[open] summary::after {
  content: "-";
}

.faq-answer {
  margin: 0;
  padding: 0 0.8rem 0.75rem;
}

.faq-answer strong {
  color: var(--text);
}