*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --bg: #0d0619;
  --bg-soft: #160c29;
  --panel: rgba(255, 255, 255, 0.04);
  --panel-strong: rgba(255, 255, 255, 0.06);
  --text: #f8fafc;
  --muted: rgba(248, 250, 252, 0.68);
  --line: rgba(245, 158, 11, 0.18);
  --accent: #f59e0b;
  --accent-soft: rgba(245, 158, 11, 0.12);
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(139, 92, 246, 0.18), transparent 35%),
    radial-gradient(circle at bottom right, rgba(245, 158, 11, 0.08), transparent 30%),
    linear-gradient(180deg, #0d0619 0%, #120924 100%);
}

.wrap {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 48px;
}

.back-link,
.footer-link {
  color: var(--accent);
  text-decoration: none;
}

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

.hero {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.03));
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.24);
}

.eyebrow {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  margin: 16px 0 10px;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: clamp(40px, 7vw, 62px);
  line-height: 0.98;
  font-weight: 600;
}

.lead {
  max-width: 760px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.72;
}

.meta {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.meta-card {
  padding: 14px 16px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--panel);
}

.meta-card strong {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
}

.meta-card span {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.notice {
  margin-top: 18px;
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid rgba(239, 68, 68, 0.25);
  background: rgba(239, 68, 68, 0.08);
  color: #fde2e2;
  line-height: 1.65;
}

.toc,
.section {
  margin-top: 22px;
  padding: 22px 24px;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: var(--panel);
}

.toc h2,
.section h2 {
  margin: 0 0 14px;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 32px;
  font-weight: 600;
}

.toc ol {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.7;
}

.section h3 {
  margin: 22px 0 8px;
  font-size: 18px;
}

.section p,
.section li {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.74;
}

.section ul,
.section ol {
  margin: 10px 0 0;
  padding-left: 20px;
}

.section code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  background: var(--accent-soft);
  color: #ffd08a;
  padding: 2px 6px;
  border-radius: 8px;
}

.highlight {
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--panel-strong);
}

footer {
  margin-top: 28px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
  text-align: center;
}

@media (max-width: 640px) {
  .wrap {
    width: min(100% - 20px, 960px);
    padding-top: 16px;
    padding-bottom: 32px;
  }

  .hero,
  .toc,
  .section {
    padding: 18px;
    border-radius: 20px;
  }

  h1 {
    font-size: 38px;
  }
}