:root {
  color-scheme: dark;
  --bg: #121212;
  --text: rgba(255, 255, 255, 0.92);
  --label: var(--text);
  --comment: rgba(255, 255, 255, 0.65);
  --accent: #4caf50;
  --accent-text: #ffffff;
  --panel: rgba(255, 255, 255, 0.04);
  --panel-border: rgba(255, 255, 255, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

#app {
  min-height: 100vh;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px) saturate(140%);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--panel-border);
}

.site-header .inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-brand {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.site-brand img {
  width: 36px;
  height: 36px;
  border-radius: 12px;
}

.site-brand span {
  line-height: 1.2;
}

.site-title {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--comment);
  letter-spacing: 0.1em;
}

.site-nav {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}

.site-nav a {
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--panel-border);
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.site-nav a:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--accent);
}

.site-nav a.icon-link {
  padding: 0.35rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
}

.site-nav a.icon-link svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.guide-main {
  max-width: 880px;
  margin: 2.5rem auto 3.5rem;
  padding: 0 1.5rem;
}

.guide-main h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.guide-lead {
  color: var(--comment);
  margin-bottom: 2rem;
}

.guide-section {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 18px;
  padding: 1.75rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.25);
}

.guide-section h2 {
  font-size: 1.25rem;
  margin-top: 0;
}

.guide-section ol {
  padding-left: 1.25rem;
  margin: 0.75rem 0 0;
}

.guide-section li + li {
  margin-top: 0.6rem;
}

.guide-section a {
  color: var(--accent);
}

.guide-back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 2rem;
  color: var(--comment);
  text-decoration: none;
}

.guide-back-link:hover {
  text-decoration: underline;
}