:root {
  color-scheme: dark;
  --bg: #0b1020;
  --bg-2: #101827;
  --panel: rgba(18, 28, 48, 0.86);
  --panel-strong: #172033;
  --text: #f5f7fb;
  --muted: #aab6cc;
  --line: rgba(255, 255, 255, 0.1);
  --blue: #39a7ff;
  --violet: #8b5cf6;
  --emerald: #36d399;
  --shadow: 0 18px 45px rgba(0, 0, 0, 0.28);
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f5f7fb;
  --bg-2: #ffffff;
  --panel: rgba(255, 255, 255, 0.92);
  --panel-strong: #ffffff;
  --text: #141a2a;
  --muted: #516079;
  --line: rgba(20, 26, 42, 0.12);
  --shadow: 0 16px 36px rgba(37, 47, 74, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    linear-gradient(120deg, rgba(57, 167, 255, 0.14), transparent 28%),
    radial-gradient(circle at 80% 0%, rgba(54, 211, 153, 0.16), transparent 28%),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }
main { min-height: 70vh; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 14px clamp(18px, 4vw, 48px);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: 0; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--blue), var(--violet), var(--emerald));
  color: white;
  font-size: 13px;
}
.desktop-nav { display: flex; gap: 18px; margin-left: auto; color: var(--muted); font-size: 14px; }
.desktop-nav a:hover, .footer-links a:hover { color: var(--text); }
.header-actions { display: flex; gap: 8px; }
.icon-button {
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
}
.mobile-only { display: none; }
.mobile-nav { display: none; }

.hero, .page-hero, .game-hero {
  width: min(1180px, calc(100% - 32px));
  margin: 34px auto 24px;
}
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  gap: 24px;
  align-items: stretch;
}
.hero-copy, .quick-panel, .page-hero, .overview-card, .game-hero > div, .article, .tool-interface, .result-card, .affiliate-box {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.hero-copy { padding: clamp(28px, 5vw, 58px); }
.hero h1, .page-hero h1, .game-hero h1, .article h1 {
  max-width: 900px;
  margin: 0 0 16px;
  line-height: 1.05;
  font-size: clamp(38px, 6vw, 76px);
  letter-spacing: 0;
}
.page-hero h1, .game-hero h1, .article h1 { font-size: clamp(34px, 4vw, 56px); }
.hero p, .page-hero p, .game-hero p, .lead { max-width: 760px; color: var(--muted); font-size: 18px; }
.eyebrow, .badge {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 10px;
  color: var(--emerald);
  background: rgba(54, 211, 153, 0.08);
  font-size: 12px;
  font-weight: 700;
}
.cta-row, .chip-row, .meta-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border: 0;
  border-radius: 8px;
  padding: 10px 15px;
  color: white;
  background: linear-gradient(135deg, var(--blue), var(--violet));
  font-weight: 800;
  cursor: pointer;
}
.button.ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text);
}
.quick-panel { padding: 22px; display: grid; gap: 14px; align-content: center; }
label { display: grid; gap: 6px; color: var(--muted); font-weight: 700; font-size: 13px; }
input, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-strong);
  color: var(--text);
  padding: 12px 13px;
}

.search-wrap { position: relative; margin: 20px 0; max-width: 760px; }
.search-results {
  position: absolute;
  inset-inline: 0;
  top: calc(100% + 8px);
  z-index: 30;
  background: var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.search-results a { display: grid; gap: 3px; padding: 12px 14px; border-bottom: 1px solid var(--line); }
.search-results span { color: var(--emerald); font-size: 12px; font-weight: 800; }
.search-results small { color: var(--muted); }

.section, .filters, .breadcrumbs, .link-grid, .ad-slot, .article-layout {
  width: min(1180px, calc(100% - 32px));
  margin: 24px auto;
}
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 16px; }
.section h2, .article h2 { margin-top: 0; line-height: 1.2; letter-spacing: 0; }
.card-grid, .guide-grid, .tool-grid-cards, .cluster-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.tool-grid-cards { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.game-card, .guide-card, .tool-card, .cluster-card {
  display: grid;
  gap: 12px;
  align-content: start;
  min-height: 100%;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(150deg, color-mix(in srgb, var(--accent, var(--blue)) 20%, transparent), transparent 45%), var(--panel);
  box-shadow: var(--shadow);
}
.game-card h3, .guide-card h3, .tool-card h3, .cluster-card h3 { margin: 0; font-size: 20px; line-height: 1.25; }
.game-card p, .guide-card p, .tool-card p, .cluster-card p, .muted { color: var(--muted); }
.game-card-top { display: flex; align-items: center; justify-content: space-between; }
.letter {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: color-mix(in srgb, var(--accent, var(--blue)) 35%, transparent);
  font-weight: 900;
}
.pill {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 9px;
  color: var(--muted);
  font-size: 12px;
  background: rgba(255, 255, 255, 0.04);
}
.meta-row { color: var(--muted); font-size: 13px; }

.game-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 20px;
}
.game-hero > div { padding: 26px; }
.overview-card dl { display: grid; grid-template-columns: 120px 1fr; gap: 8px 12px; }
.overview-card dt { color: var(--muted); }
.overview-card dd { margin: 0; }
.notice {
  width: min(1180px, calc(100% - 32px));
  margin: 16px auto;
  padding: 14px 16px;
  border: 1px solid rgba(54, 211, 153, 0.3);
  border-radius: 8px;
  background: rgba(54, 211, 153, 0.08);
  color: var(--muted);
}
.editor-note {
  display: grid;
  gap: 10px;
  padding: 18px;
  border: 1px solid rgba(57, 167, 255, 0.28);
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(57, 167, 255, 0.09), rgba(54, 211, 153, 0.06));
}
.editor-note p {
  margin: 0;
  color: color-mix(in srgb, var(--text) 84%, var(--muted));
}
.tool-strip { display: flex; flex-wrap: wrap; gap: 10px; }
.tool-strip a, .compact-list a {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.article-layout { display: grid; grid-template-columns: 240px minmax(0, 860px); gap: 22px; align-items: start; justify-content: center; }
.article { padding: clamp(20px, 4vw, 44px); }
.article.single { width: min(860px, calc(100% - 32px)); margin: 28px auto; }
.article p, .prose { color: color-mix(in srgb, var(--text) 82%, var(--muted)); }
.article section { padding-top: 12px; }
.toc {
  position: sticky;
  top: 86px;
  display: grid;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}
.toc a { color: var(--muted); font-size: 14px; }
.quick-answer {
  margin: 22px 0;
  padding: 18px;
  border: 1px solid rgba(57, 167, 255, 0.28);
  border-radius: 8px;
  background: rgba(57, 167, 255, 0.08);
}
.article-footer-note {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
}
table {
  width: 100%;
  border-collapse: collapse;
  min-width: 560px;
  background: var(--panel);
}
th, td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
th {
  color: var(--text);
  background: rgba(57, 167, 255, 0.08);
}
td { color: var(--muted); }
.checklist li { margin-bottom: 8px; }
.internal-link-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.internal-link-card {
  display: grid;
  gap: 6px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}
.internal-link-card strong { color: var(--text); }
.internal-link-card span { color: var(--muted); font-size: 14px; }

.filters, .tool-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}
.tool-interface { width: min(1180px, calc(100% - 32px)); margin: 24px auto; padding: 20px; }
.tool-results { margin-top: 18px; }
.result-card { padding: 18px; }
.result-card ul, .result-card ol { padding-left: 22px; }
.result-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(260px, 0.75fr);
  gap: 16px;
  align-items: start;
}
.mini-stat {
  display: grid;
  gap: 4px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}
.mini-stat span { color: var(--muted); font-size: 13px; }
.mini-stat strong { color: var(--text); }
.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}
.tier { display: grid; gap: 8px; margin: 12px 0; padding: 12px; border: 1px solid var(--line); border-radius: 8px; }
.tier div { display: grid; gap: 2px; }
.tier span { color: var(--muted); }
.check-row {
  display: flex;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 10px;
  padding: 9px 0;
  color: var(--text);
}
.check-row input { width: 18px; }

.faq-list { display: grid; gap: 10px; }
details {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 16px;
  background: var(--panel);
}
summary { cursor: pointer; font-weight: 800; }
.ad-slot {
  min-height: 84px;
  display: grid;
  place-items: center;
  border: 1px dashed var(--line);
  border-radius: 8px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.035);
}
.ad-slot span { font-weight: 800; }
.ad-slot small { color: var(--muted); }
.affiliate-box { width: min(1180px, calc(100% - 32px)); margin: 24px auto; padding: 20px; }
.link-grid, .compact-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.link-grid a { padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; color: var(--muted); background: var(--panel); }

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  padding: 34px clamp(18px, 4vw, 48px);
  margin-top: 42px;
  border-top: 1px solid var(--line);
  background: var(--bg-2);
}
.footer-links { display: flex; flex-wrap: wrap; gap: 14px; color: var(--muted); }

@media (max-width: 980px) {
  .desktop-nav { display: none; }
  .mobile-only { display: inline-grid; }
  .mobile-nav.open {
    position: absolute;
    display: grid;
    gap: 6px;
    top: 64px;
    right: 18px;
    width: min(260px, calc(100vw - 36px));
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel-strong);
  }
  .mobile-nav a { padding: 10px; color: var(--muted); }
  .hero, .game-hero, .article-layout, .site-footer { grid-template-columns: 1fr; }
  .result-layout { grid-template-columns: 1fr; }
  .toc { position: static; }
  .card-grid, .guide-grid, .tool-grid-cards, .cluster-grid, .link-grid, .internal-link-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .filters, .tool-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  .site-header { padding: 12px 16px; }
  .hero, .page-hero, .game-hero, .section, .filters, .breadcrumbs, .article-layout, .tool-interface, .notice, .ad-slot, .affiliate-box { width: min(100% - 22px, 1180px); }
  .hero-copy, .quick-panel, .page-hero, .game-hero > div, .article { padding: 18px; }
  .hero h1, .page-hero h1, .game-hero h1, .article h1 { font-size: 34px; }
  .card-grid, .guide-grid, .tool-grid-cards, .cluster-grid, .link-grid, .internal-link-grid, .filters, .tool-grid { grid-template-columns: 1fr; }
  .overview-card dl { grid-template-columns: 1fr; }
  .cta-row .button { width: 100%; }
}