@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Playfair+Display:ital,wght@0,700;1,700&display=swap');

:root {
  --neon-green: #39FF8A;
  --neon-green-glow: rgba(57,255,138,0.5);
  --dark-bg: #0A0F14;
  --dark-card: #0F1920;
  --dark-surface: #141E27;
  --dark-border: rgba(57,255,138,0.12);
  --text-primary: #E8F0EB;
  --text-secondary: #A5B8AC;
  --text-dim: #6B8A7A;
  --font-display: 'Playfair Display', serif;
  --font-body: 'Outfit', sans-serif;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--dark-bg);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(57,255,138,0.25); color: #fff; }

a { color: var(--neon-green); text-decoration: none; transition: text-shadow 0.25s, color 0.25s; }
a:hover { text-shadow: 0 0 8px var(--neon-green-glow); }

.help-header {
  max-width: 860px;
  margin: 0 auto;
  padding: 32px 24px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--dark-border);
}
.help-home {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
}
.help-home img {
  border-radius: 8px;
  filter: drop-shadow(0 0 6px rgba(57,255,138,0.3));
}
.help-home:hover { text-shadow: 0 0 8px var(--neon-green-glow); }
.help-back {
  font-size: 14px;
  color: var(--text-dim);
}
.help-back:hover { color: var(--neon-green); }

.help-main {
  max-width: 860px;
  margin: 0 auto;
  padding: 48px 24px 72px;
}

.help-main h1 {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 52px);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-primary);
  text-shadow: 0 0 24px rgba(57,255,138,0.15);
}

.help-main h2 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 44px;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--dark-border);
}

.help-main h3 {
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 28px;
  margin-bottom: 8px;
}

.help-meta {
  color: var(--text-dim);
  font-size: 14px;
  margin-top: 10px;
  margin-bottom: 28px;
}

.help-main p {
  color: var(--text-secondary);
  font-size: 16px;
  margin-bottom: 16px;
}

.help-main ul {
  margin: 12px 0 20px 20px;
  color: var(--text-secondary);
}
.help-main ul li {
  margin-bottom: 10px;
  font-size: 16px;
}
.help-main ul li::marker { color: var(--neon-green); }

.help-main strong { color: var(--text-primary); font-weight: 600; }

.help-main code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13.5px;
  background: var(--dark-surface);
  border: 1px solid var(--dark-border);
  padding: 1px 6px;
  border-radius: 5px;
  color: var(--neon-green);
}

.help-table-wrap {
  overflow-x: auto;
  margin: 16px 0 8px;
  border: 1px solid var(--dark-border);
  border-radius: 10px;
  background: var(--dark-card);
}
.help-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
}
.help-table th, .help-table td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--dark-border);
  color: var(--text-secondary);
}
.help-table thead th {
  background: var(--dark-surface);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.help-table tbody tr:last-child td { border-bottom: none; }
.help-table td:first-child { color: var(--text-primary); font-weight: 500; }
.help-dim { color: var(--text-dim); font-size: 12.5px; }

.help-footer {
  max-width: 860px;
  margin: 0 auto;
  padding: 28px 24px 40px;
  border-top: 1px solid var(--dark-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-dim);
  font-size: 13px;
}
.help-footer nav { display: flex; gap: 22px; }
.help-footer nav a { color: var(--text-dim); }
.help-footer nav a:hover { color: var(--neon-green); }

.pu-grid { display: flex; flex-direction: column; gap: 12px; margin-top: 18px; }

.pu-feature {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: 14px;
  transition: border-color 0.25s, box-shadow 0.25s, background 0.25s;
}
.pu-feature[open] {
  border-color: rgba(57,255,138,0.28);
  box-shadow: 0 0 24px rgba(57,255,138,0.08);
}
.pu-feature:hover { border-color: rgba(57,255,138,0.18); }

.pu-feature > summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  user-select: none;
}
.pu-feature > summary::-webkit-details-marker { display: none; }
.pu-icon { font-size: 18px; }
.pu-label {
  flex: 1;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}
.pu-arrow {
  color: var(--text-dim);
  font-size: 18px;
  line-height: 1;
  transition: transform 0.2s, color 0.2s;
}
.pu-feature[open] .pu-arrow { transform: rotate(90deg); color: var(--neon-green); }

.pu-content {
  padding: 4px 22px 22px 50px;
  color: var(--text-secondary);
  font-size: 14.5px;
  line-height: 1.65;
}
.pu-content h4 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 22px;
  margin-bottom: 10px;
}
.pu-content p { margin-bottom: 12px; }
.pu-content ol, .pu-content ul { margin: 4px 0 16px 20px; }
.pu-content li { margin-bottom: 8px; }
.pu-content li::marker { color: var(--neon-green); }
.pu-content strong { color: var(--text-primary); font-weight: 600; }
.pu-content code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  background: var(--dark-surface);
  border: 1px solid var(--dark-border);
  padding: 1px 6px;
  border-radius: 5px;
  color: var(--neon-green);
}
.pu-content pre {
  background: var(--dark-bg);
  border: 1px solid var(--dark-border);
  border-radius: 10px;
  padding: 14px 16px;
  overflow-x: auto;
  margin: 6px 0 16px;
}
.pu-content pre code {
  border: none;
  padding: 0;
  background: transparent;
  color: var(--text-primary);
  font-size: 12.5px;
  line-height: 1.55;
}
.pu-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 6px 0 16px;
  font-size: 13.5px;
  border: 1px solid var(--dark-border);
  border-radius: 10px;
  overflow: hidden;
  background: var(--dark-bg);
}
.pu-content th, .pu-content td {
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--dark-border);
  color: var(--text-secondary);
}
.pu-content th {
  background: var(--dark-surface);
  color: var(--text-primary);
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}
.pu-content tr:last-child td { border-bottom: none; }
.pu-content td:first-child { color: var(--text-primary); }
.pu-meta {
  color: var(--text-dim);
  font-size: 13px;
  margin: 0 0 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--dark-border);
}

@media (max-width: 600px) {
  .help-header, .help-footer { flex-direction: column; gap: 12px; align-items: flex-start; }
  .help-main { padding: 32px 20px 56px; }
  .pu-content { padding-left: 22px; }
}