* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #1f2430;
  background: #f4f6fe;
}

.help-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 20px;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 12px rgba(0, 2, 8, 0.08);
  backdrop-filter: blur(8px);
}

.help-header .logo {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #282832;
  font-size: 18px;
  font-weight: 700;
  text-decoration: none;
}

.help-header .logo img {
  width: 36px;
  height: 36px;
}

.help-header nav {
  display: flex;
  gap: 16px;
}

.help-header nav a {
  color: #4189f9;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
}

.help-header nav a:hover {
  text-decoration: underline;
}

.help-wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 64px;
  color: #1f2430;
}

.help-wrap h1 {
  margin: 0 0 12px;
  font-size: 28px;
  line-height: 1.25;
  color: #12141c;
}

.help-wrap h2 {
  margin: 28px 0 10px;
  font-size: 20px;
  line-height: 1.3;
  color: #12141c;
}

.help-wrap p,
.help-wrap li {
  font-size: 16px;
  line-height: 1.65;
  color: #333946;
}

.help-wrap ol {
  margin: 0;
  padding-left: 22px;
}

.help-wrap li {
  margin: 8px 0;
}

.help-wrap strong {
  color: #12141c;
}

.help-wrap a {
  color: #c51111;
  font-weight: 600;
}

.help-wrap a:hover {
  text-decoration: underline;
}

.back-link {
  display: inline-block;
  margin-top: 40px;
}