:root {
  --bg: #f2f5f7;
  --panel: #ffffff;
  --line: #d6dde3;
  --ink: #1f2937;
  --muted: #52606d;
  --accent: #107275;
  --accent-soft: #e7f7f7;
  --code-bg: #f5f7fa;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: linear-gradient(180deg, #f8fbfc 0%, var(--bg) 100%);
  color: var(--ink);
  font-family: "Catamaran", "Noto Sans", "DejaVu Sans", sans-serif;
}

body {
  padding: 24px;
}

.help-shell {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 28px 32px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: 0 16px 40px rgb(15 23 42 / 0.08);
}

.help-header {
  margin-bottom: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid #e7edf2;
}

.help-kicker {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.help-header h1 {
  margin: 0;
  color: #0b5961;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  line-height: 1.08;
}

.help-content {
  font-size: 1.08rem;
  line-height: 1.62;
}

.help-content h1,
.help-content h2,
.help-content h3 {
  color: #0b5961;
  line-height: 1.2;
}

.help-content h1 {
  margin: 0 0 1rem;
  font-size: 2rem;
}

.help-content h2 {
  margin: 2rem 0 0.9rem;
  padding-top: 0.25rem;
  border-top: 1px solid #edf2f5;
  font-size: 1.45rem;
}

.help-content h3 {
  margin: 1.4rem 0 0.7rem;
  font-size: 1.18rem;
}

.help-content p {
  margin: 0 0 1rem;
}

.help-content ul,
.help-content ol {
  margin: 0 0 1rem 1.4rem;
  padding: 0;
}

.help-content li {
  margin: 0.3rem 0;
}

.help-content code {
  padding: 0.08rem 0.35rem;
  border-radius: 0.35rem;
  background: var(--code-bg);
  border: 1px solid #e6ebef;
  font-size: 0.95em;
  font-family: "DejaVu Sans Mono", "Noto Sans Mono", monospace;
}

.help-content a {
  color: #0f6f8a;
}

.help-status {
  margin: 0;
  color: var(--muted);
}

.help-error {
  padding: 14px 16px;
  border: 1px solid #efc1bc;
  border-radius: 10px;
  background: #fff3f1;
  color: #8a2f22;
}

@media (max-width: 720px) {
  body {
    padding: 12px;
  }

  .help-shell {
    padding: 18px 18px 24px;
    border-radius: 14px;
  }

  .help-content {
    font-size: 1rem;
  }
}