:root {
  --bg: #0f1d18;
  --bg-soft: #17372d;
  --panel: #142922;
  --panel-soft: #1b342b;
  --gold: #ddb661;
  --gold-strong: #f1c86f;
  --text: #eff7f1;
  --muted: #bfd2c7;
  --line: rgba(255,255,255,0.08);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.22);
  --radius: 22px;
  --radius-sm: 16px;
  --max: 1180px;
  --warm: #704423;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(221, 182, 97, 0.12), transparent 28%),
    linear-gradient(180deg, #10231c 0%, #0a1511 100%);
  line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.skip-link {
  position: absolute; left: -9999px; top: auto;
}
.skip-link:focus {
  left: 12px; top: 12px; z-index: 1000;
  background: #fff; color: #111; padding: 8px 12px; border-radius: 8px;
}
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(11, 23, 18, 0.86);
  border-bottom: 1px solid var(--line);
}
.header-shell {
  min-height: 76px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.brand-logo {
  width: 54px;
  height: 54px;
  object-fit: cover;
  border-radius: 14px;
  box-shadow: var(--shadow);
}
.brand-text {
  display: grid;
  line-height: 1.2;
}
.brand-text strong {
  font-size: 1rem;
  letter-spacing: 0.01em;
}
.brand-text small {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 4px;
}
.desktop-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 14px;
}
.nav-link {
  color: var(--muted);
  font-size: 0.96rem;
  padding: 8px 10px;
  border-radius: 999px;
}
.nav-link:hover,
.nav-link:focus-visible {
  color: var(--text);
  background: rgba(255,255,255,0.06);
}
.menu-toggle {
  display: none;
  appearance: none;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 999px;
  cursor: pointer;
}
.mobile-nav {
  border-top: 1px solid var(--line);
  background: rgba(13, 25, 20, 0.98);
}
.mobile-nav-inner { padding: 14px 0 18px; }
.mobile-nav-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.mobile-nav-link {
  background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 14px;
  color: var(--text);
}

.section {
  padding: 28px 0;
}
.section h2 {
  font-size: clamp(1.5rem, 1.2rem + 1vw, 2.2rem);
  line-height: 1.2;
  margin: 0 0 10px;
}
.section-intro {
  color: var(--muted);
  max-width: 760px;
  margin: 0 0 22px;
}

.hero {
  padding: 34px 0 10px;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 28px;
  align-items: stretch;
}
.hero-panel,
.hero-visual,
.panel {
  background: linear-gradient(180deg, rgba(24, 51, 41, 0.97), rgba(18, 39, 31, 0.97));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.hero-panel {
  padding: 30px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(221, 182, 97, 0.16);
  color: var(--gold-strong);
  border: 1px solid rgba(221, 182, 97, 0.22);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 0.9rem;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(2rem, 1.4rem + 2.5vw, 4rem);
  line-height: 1.05;
  margin: 0 0 14px;
  letter-spacing: -0.03em;
}
.hero p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 1.06rem;
}
.search-shell {
  background: rgba(9, 16, 13, 0.46);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 14px;
  margin: 18px 0 14px;
}
.search-label {
  display: block;
  font-size: 0.92rem;
  color: var(--muted);
  margin-bottom: 10px;
}
.search-row {
  display: flex;
  gap: 10px;
}
.search-row input {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255,255,255,0.04);
  padding: 14px 16px;
  color: var(--text);
  font-size: 1rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 18px;
  border-radius: 14px;
  border: 1px solid transparent;
  cursor: pointer;
  font-weight: 700;
}
.btn-primary {
  background: linear-gradient(180deg, var(--gold-strong), #cb9b45);
  color: #24180a;
}
.btn-secondary {
  background: rgba(255,255,255,0.04);
  border-color: var(--line);
  color: var(--text);
}
.hot-terms {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}
.term-chip {
  border: 1px solid rgba(221, 182, 97, 0.22);
  background: rgba(221, 182, 97, 0.1);
  color: #f4d591;
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 0.92rem;
}
.hero-visual {
  overflow: hidden;
  display: grid;
  grid-template-rows: 1fr auto;
}
.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 380px;
}
.hero-note {
  padding: 20px 22px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(112, 68, 35, 0.22), rgba(24, 51, 41, 0.1));
}
.hero-note h2 {
  font-size: 1.1rem;
  margin: 0 0 8px;
}
.hero-note p {
  margin: 0;
  color: var(--muted);
}

.grid-2, .grid-3, .grid-4 {
  display: grid;
  gap: 18px;
}
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card,
.term-card,
.scene-card,
.topic-card,
.article-card,
.faq-card,
.relation-card,
.redflag-item {
  background: linear-gradient(180deg, rgba(24, 47, 38, 0.95), rgba(17, 31, 26, 0.95));
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
}
.term-card, .scene-card, .topic-card, .article-card, .faq-card, .relation-card {
  padding: 20px;
}
.card-title {
  font-size: 1.14rem;
  margin: 0 0 8px;
}
.card p,
.term-card p,
.scene-card p,
.topic-card p,
.article-card p,
.relation-card p,
.faq-card p {
  margin: 0;
  color: var(--muted);
}
.scene-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: 18px;
}
.scene-main {
  padding: 22px;
}
.scene-main ul {
  margin: 14px 0 0;
  padding-left: 18px;
  color: var(--muted);
}
.scene-side {
  display: grid;
  gap: 18px;
}
.relation-strip {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 18px;
  align-items: center;
  padding: 18px 20px;
  margin-bottom: 16px;
}
.relation-mark {
  min-width: 72px;
  text-align: center;
  color: var(--gold-strong);
  font-weight: 700;
}
.checklist {
  display: grid;
  gap: 14px;
}
.check-item {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 14px;
  align-items: start;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255,255,255,0.03);
}
.check-no {
  width: 46px;
  height: 46px;
  display: inline-grid;
  place-items: center;
  border-radius: 12px;
  background: rgba(221,182,97,0.15);
  color: var(--gold-strong);
  font-weight: 700;
}
.redflag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.redflag-item {
  padding: 16px 18px;
  border-radius: 999px;
  color: #ffe4a7;
  background: linear-gradient(180deg, rgba(112,68,35,0.42), rgba(27,52,43,0.95));
  border: 1px solid rgba(221, 182, 97, 0.18);
}
.group-board {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 18px;
}
.group-list {
  display: grid;
  gap: 18px;
}
.topic-group {
  padding: 22px;
}
.topic-group ul {
  margin: 16px 0 0;
  padding-left: 18px;
}
.topic-group li + li { margin-top: 8px; }
.topic-group a { color: #f4e3b8; }
.index-tiles {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}
.index-tile {
  padding: 18px;
  text-align: left;
}
.index-tile h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}
.term-list {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}
.term-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 18px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255,255,255,0.03);
}
.term-word {
  color: #f3cf81;
  font-weight: 700;
}
.highlight-box {
  padding: 22px;
}
.page-hero {
  padding: 24px 0 10px;
}
.page-hero-shell {
  display: grid;
  gap: 18px;
  padding: 24px;
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--muted);
  font-size: 0.92rem;
  margin-bottom: 12px;
}
.breadcrumb a { color: var(--muted); }
.breadcrumb span.sep { color: rgba(255,255,255,0.35); }
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 290px;
  gap: 22px;
}
.article-main {
  padding: 24px;
}
.article-side {
  position: sticky;
  top: 96px;
  align-self: start;
}
.toc {
  padding: 20px;
}
.toc ul {
  margin: 12px 0 0;
  padding-left: 18px;
}
.toc li + li { margin-top: 8px; }
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0 0 14px;
}
.article-summary {
  color: #e9f6ea;
  font-size: 1.05rem;
  margin: 0 0 24px;
}
.article-main h2 {
  margin-top: 30px;
  margin-bottom: 8px;
  font-size: 1.6rem;
  scroll-margin-top: 96px;
}
.article-main p {
  margin: 0 0 16px;
  color: #d8e7dc;
}
.article-related {
  margin-top: 34px;
}
.article-related ul {
  margin: 14px 0 0;
  padding-left: 18px;
}
.article-related li + li { margin-top: 8px; }
.list-grid {
  display: grid;
  gap: 18px;
}
.list-grid .article-card h3 {
  margin: 0 0 10px;
}
.pagination {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 20px;
}
.pagination a,
.pagination span {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
}
.pagination .current {
  background: rgba(221, 182, 97, 0.16);
  color: #f4d591;
}
.search-page-input {
  width: 100%;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  font-size: 1rem;
}
.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0 20px;
}
.filter-chip {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
  cursor: pointer;
}
.filter-chip.active {
  background: rgba(221,182,97,0.16);
  color: #f4d591;
}
.search-results {
  display: grid;
  gap: 14px;
}
.search-empty {
  color: var(--muted);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr 0.9fr;
  gap: 20px;
  padding: 28px 0 20px;
  border-top: 1px solid var(--line);
  margin-top: 28px;
}
.site-footer h2 {
  font-size: 1rem;
  margin: 0 0 10px;
}
.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-links li + li { margin-top: 8px; }
.footer-bottom {
  color: var(--muted);
  padding: 0 0 26px;
  font-size: 0.92rem;
}
.empty-404 {
  display: grid;
  place-items: center;
  min-height: 50vh;
  text-align: center;
}
.empty-404 h1 {
  font-size: clamp(3rem, 2rem + 3vw, 5rem);
  margin: 0 0 14px;
}
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag {
  font-size: 0.88rem;
  color: #f4d591;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid rgba(221,182,97,0.2);
  background: rgba(221,182,97,0.08);
}

@media (max-width: 1024px) {
  .desktop-nav { display: none; }
  .menu-toggle { display: inline-flex; }
  .hero-grid,
  .scene-layout,
  .group-board,
  .article-layout,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .article-side { position: static; }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .index-tiles { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (min-width: 1025px) {
  .mobile-nav[hidden] { display: none !important; }
}
@media (max-width: 760px) {
  .container { width: min(var(--max), calc(100% - 22px)); }
  .header-shell { grid-template-columns: 1fr auto; }
  .brand-text small { display: none; }
  .hero-panel { padding: 22px; }
  .search-row { flex-direction: column; }
  .grid-4,
  .grid-3,
  .grid-2,
  .index-tiles {
    grid-template-columns: 1fr;
  }
  .term-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .relation-strip {
    grid-template-columns: 1fr;
    text-align: left;
  }
}