:root {
  --bg: #111111;
  --panel: #1a1a1a;
  --panel-2: #202020;
  --line: rgba(255, 255, 255, 0.08);
  --text: rgba(255, 255, 255, 0.88);
  --muted: rgba(255, 255, 255, 0.6);
  --soft: rgba(255, 255, 255, 0.32);
  --gold: #d4b04a;
  --gold-soft: rgba(212, 176, 74, 0.14);
  --serif: "Noto Serif SC", "Songti SC", "STSong", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", "Menlo", "Monaco", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--sans);
  background:
    radial-gradient(circle at top right, rgba(212, 176, 74, 0.1), transparent 28%),
    linear-gradient(180deg, #171717 0%, #101010 100%);
  color: var(--text);
  padding-top: 84px;
}

a {
  color: inherit;
}

.detail-shell {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
  padding: 24px 0 80px;
}

.detail-back {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid rgba(212, 176, 74, 0.68);
  border-radius: 999px;
  background: linear-gradient(180deg, #e2bf58 0%, #cfa63f 100%);
  backdrop-filter: blur(16px);
  color: #161616;
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  z-index: 20;
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.24), 0 0 0 1px rgba(255, 240, 194, 0.16) inset;
}

.detail-back:hover {
  color: #111;
  border-color: rgba(232, 206, 121, 0.9);
  background: linear-gradient(180deg, #ebcb68 0%, #d8ae47 100%);
}

.detail-hero {
  background: linear-gradient(145deg, rgba(212, 176, 74, 0.14), rgba(255, 255, 255, 0.03));
  border: 1px solid rgba(212, 176, 74, 0.22);
  padding: 36px;
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(240px, 0.7fr);
  gap: 24px;
  margin-bottom: 24px;
}

.detail-kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
}

.detail-title {
  margin: 0 0 12px;
  font-family: var(--serif);
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.2;
}

.detail-links {
  display: grid;
  gap: 12px;
  align-content: start;
}

.detail-btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 52px;
  padding: 12px 18px;
  border: 1px solid var(--gold);
  color: var(--gold);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  transition: 0.2s ease;
  background: transparent;
}

.detail-btn:hover {
  background: var(--gold);
  color: #111;
}

.detail-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.detail-chip {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 10px 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  text-decoration: none;
  font-size: 12px;
}

.detail-chip:hover {
  color: #fff;
  border-color: rgba(212, 176, 74, 0.45);
}

.detail-section {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 28px;
  margin-bottom: 18px;
}

.detail-section h2 {
  margin: 0 0 18px;
  font-family: var(--serif);
  font-size: 28px;
}

.detail-section h3 {
  margin: 24px 0 12px;
  font-size: 18px;
  color: #fff;
}

.detail-section p {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.detail-card {
  padding: 18px;
  background: var(--panel-2);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.detail-card h4 {
  margin: 0 0 10px;
  font-size: 15px;
  color: #fff;
}

.detail-card p:last-child {
  margin-bottom: 0;
}

.detail-list,
.catalog-list,
.faq-list {
  margin: 0;
  padding-left: 20px;
}

.detail-list li,
.catalog-list li,
.faq-list li {
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}

.faq-list strong {
  color: #fff;
}

.detail-article-link {
  color: var(--gold);
  text-decoration: underline;
  text-decoration-color: rgba(212, 176, 74, 0.45);
  text-underline-offset: 3px;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

.detail-article-link:hover {
  color: #f0d27a;
  text-decoration-color: rgba(240, 210, 122, 0.88);
}

.catalog-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.catalog-card {
  padding: 20px;
  background: var(--panel-2);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.catalog-card h3 {
  margin-top: 0;
}

.note {
  margin-top: 14px;
  padding: 14px 16px;
  background: var(--gold-soft);
  border-left: 3px solid var(--gold);
  color: var(--text);
}

@media (max-width: 900px) {
  .detail-hero,
  .detail-grid,
  .catalog-columns {
    grid-template-columns: 1fr;
  }

  .detail-shell {
    width: min(100% - 24px, 1160px);
    padding-top: 16px;
  }

  .detail-hero,
  .detail-section {
    padding: 22px;
  }

  .detail-back {
    top: 12px;
    left: 12px;
    right: 12px;
    transform: none;
    justify-content: center;
  }
}