:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-2: #f0f4f8;
  --line: rgba(24, 39, 56, 0.12);
  --text: #15202b;
  --muted: #5f7183;
  --accent: #2fa36f;
  --accent-soft: rgba(47, 163, 111, 0.12);
  --accent-contrast: #ffffff;
  --radius: 10px;
  --radius-sm: 8px;
  --max: 1040px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1316;
    --surface: #171d22;
    --surface-2: #1e262d;
    --line: rgba(255,255,255,0.08);
    --text: #eef3f5;
    --muted: #9fb0ba;
    --accent: #3ed29f;
    --accent-soft: rgba(62, 210, 159, 0.12);
    --accent-contrast: #0b1114;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: linear-gradient(180deg, var(--bg) 0%, color-mix(in srgb, var(--bg) 88%, #dfe7ef 12%) 100%);
}

a { color: inherit; text-decoration: none; }
input, button { font: inherit; }

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  background: var(--accent);
  color: white;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  z-index: 20;
}

.skip-link:focus { top: 16px; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: min(calc(100% - 32px), var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 12;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: blur(10px);
  transition: transform 0.24s ease, background 0.2s ease, border-color 0.2s ease;
  will-change: transform;
}

.site-header.is-hidden {
  transform: translateY(calc(-100% - 1px));
}

.site-header.menu-open {
  transform: translateY(0);
}

.topbar {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 16px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: -0.02em;
  flex: 0 0 auto;
  transition: opacity 0.18s ease;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: white;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: 8px;
}

.desktop-nav a,
.mobile-nav a,
.quick-nav-row a,
.back-top-floating {
  color: var(--muted);
  padding: 8px 10px;
  border-radius: var(--radius-sm);
}

.desktop-nav a:hover,
.desktop-nav a:focus-visible,
.mobile-nav a:hover,
.mobile-nav a:focus-visible,
.quick-nav-row a:hover,
.quick-nav-row a:focus-visible,
.back-top-floating:hover,
.back-top-floating:focus-visible {
  color: var(--text);
  background: color-mix(in srgb, var(--surface-2) 88%, transparent);
}

.desktop-search {
  margin-left: auto;
}

.desktop-search input,
.mobile-searchbar input {
  width: 100%;
  height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface-2) 70%, transparent);
  color: var(--text);
}

.desktop-search input {
  width: min(220px, 28vw);
}

.desktop-search input::placeholder,
.mobile-searchbar input::placeholder {
  color: var(--muted);
}

.desktop-search input:focus,
.mobile-searchbar input:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  background: var(--surface);
}

.mobile-actions {
  display: none;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.icon-btn {
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface-2) 60%, transparent);
  color: var(--text);
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease, transform 0.18s ease, opacity 0.18s ease;
}

.icon-btn:hover,
.icon-btn:focus-visible {
  background: color-mix(in srgb, var(--surface-2) 88%, transparent);
}

.icon-btn:focus-visible {
  outline: none;
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
}

.icon-btn:active {
  transform: translateY(1px);
}

.icon-btn .icon {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}

.mobile-searchbar {
  position: absolute;
  top: 50%;
  right: 50px;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  width: 0;
  max-width: 360px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  overflow: hidden;
  z-index: 3;
  transition: width 0.18s ease, opacity 0.18s ease;
}

.mobile-searchbar input {
  min-width: 0;
  height: 42px;
}

.mobile-searchbar .search-close {
  flex: 0 0 auto;
}

.mobile-searchbar.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.mobile-menu-shell { display: none; }

.mobile-menu {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transform: translateY(-8px);
  transition: max-height 0.28s ease, opacity 0.22s ease, transform 0.22s ease;
}

.mobile-menu.is-open {
  max-height: 260px;
  opacity: 1;
  transform: translateY(0);
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 10px 0 12px;
}

.hero { padding: 34px 0 14px; }
.hero-inner { max-width: var(--max); margin-inline: auto; }

.eyebrow {
  display: inline-block;
  margin: 0 0 10px;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.hero h1,
.section-head h2,
.featured-card h3 {
  margin: 0;
  letter-spacing: -0.03em;
  text-align: left;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.1;
}

.lead,
.section-head p,
.featured-card p,
.meta { color: var(--muted); }

.lead { margin: 14px 0 0; max-width: 64ch; }
.section { padding: 20px 0 16px; }
.section-head { margin-bottom: 12px; }

.section-head h2 {
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  margin-bottom: 4px;
}

.section-head + .resource-group {
  margin-top: 32px;
}

.quick-nav-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.featured-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.featured-card,
.list-section {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: 0 4px 18px rgba(15, 23, 42, 0.04);
}

@media (prefers-color-scheme: dark) {
  .featured-card,
  .list-section { box-shadow: none; }
}

.featured-card { padding: 16px; }

.card-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  margin-bottom: 12px;
}

.badge,
.mini-link {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  font-weight: 700;
}

.badge {
  background: color-mix(in srgb, var(--surface-2) 92%, transparent);
  color: var(--muted);
  border: 1px solid var(--line);
}

.sub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.mini-link {
  border: 1px solid color-mix(in srgb, var(--accent) 38%, var(--line));
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, var(--surface));
}

.mini-link:hover,
.mini-link:focus-visible {
  color: var(--accent-contrast);
  background: var(--accent);
  border-color: var(--accent);
}

.list-section { padding: 16px; }

.resource-list {
  margin: 0;
  padding-left: 20px;
}

.resource-list li {
  padding: 10px 0;
  border-top: 1px solid var(--line);
}

.resource-list li:first-child { border-top: 0; }

.primary-link {
  color: var(--accent);
  font-weight: 700;
}

.primary-link:hover,
.primary-link:focus-visible {
  text-decoration: underline;
}

.inline-links {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.sep {
  color: var(--muted);
  font-weight: 500;
}

.inline-links a {
  color: var(--accent);
  font-weight: 600;
}

.inline-links a:hover,
.inline-links a:focus-visible { text-decoration: underline; }

.back-top-floating {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 10;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  backdrop-filter: blur(10px);
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

.back-top-floating.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.resource-group + .resource-group {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.resource-subtitle {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  margin: 0 0 10px;
  padding: 0 10px;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  font-weight: 700;
  background: color-mix(in srgb, var(--surface-2) 92%, transparent);
  color: var(--muted);
  border: 1px solid var(--line);
}

.resource-group .resource-list {
  margin: 0;
  padding-left: 20px;
}

.link-flag {
  white-space: nowrap;
}

.site-header.is-anchoring {
  transform: translateY(0) !important;
}

[hidden] {
  display: none !important;
}

.search-status-wrap {
  padding-top: 10px;
}

.search-status {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.no-results {
  padding: 10px 0 18px;
}

.no-results p {
  margin: 0;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--muted);
}

mark.search-hit {
  color: inherit;
  padding: 0 2px;
  border-radius: 3px;
  background: rgba(255, 229, 138, 0.72);
}

@media (prefers-color-scheme: dark) {
  mark.search-hit {
    background: rgba(245, 171, 50, 0.24);
  }
}

.emoji-legend-section {
  padding: 14px 0 40px;
}

.emoji-legend-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 12px 16px;
}

.emoji-legend-title {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.emoji-legend-list {
  list-style: none;
  margin: 0;
  padding: 0;
  color: var(--muted);
}

.emoji-legend-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 2px 0;
  border: 0;
}

.emoji-legend-list li span {
  flex: 0 0 1.25rem;
  text-align: center;
}

@media (min-width: 641px) {
  .emoji-legend-list {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    row-gap: 6px;
  }

  .emoji-legend-list li {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 0;
  }

  .emoji-legend-list li + li::before {
    content: "/";
    margin: 0 0 0 8px;
    color: color-mix(in srgb, var(--muted) 82%, transparent);
  }
}

@media (max-width: 920px) {
  .featured-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .desktop-nav,
  .desktop-search {
    display: none;
  }

  .mobile-actions {
    display: flex;
  }

  .mobile-menu-shell {
    display: block;
  }

  .mobile-searchbar.is-open {
    width: calc(100% - 50px);
  }

  .mobile-search-open .brand {
    opacity: 0;
    pointer-events: none;
  }

  .mobile-search-open .search-toggle {
    opacity: 0;
    pointer-events: none;
  }

  .inline-links {
    display: flex;
    margin-left: 0;
    margin-top: 6px;
  }

  .sep {
    font-size: 0.95em;
  }

  .back-top-floating {
    right: 12px;
    bottom: 12px;
    font-size: 0.92rem;
  }
}