:root {
  --bg: #f5f7f6;
  --surface: #ffffff;
  --surface-2: #fbfcfc;
  --border: #e4e8e6;
  --border-strong: #d0d7d4;
  --text: #15201d;
  --text2: #4c5854;
  --muted: #889390;
  --accent: #0c6b4f;
  --accent-soft: #e7f1ec;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
}

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 2rem; }

/* NAV */
nav {
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(10px);
  position: sticky; top: 0; z-index: 100;
  padding: 1rem 0;
}
nav .wrap { display: flex; justify-content: space-between; align-items: center; }
.nav-logo { font-size: 0.74rem; letter-spacing: 0.14em; color: var(--text); text-transform: uppercase; font-weight: 600; display: flex; align-items: center; text-decoration: none; }
.nav-logo:hover { color: var(--accent); }
.nav-meta { font-size: 0.7rem; color: var(--muted); letter-spacing: 0.05em; }
.pulse { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); margin-right: 0.55rem; }

/* HERO */
.hero { padding: 4.75rem 0 3.25rem; border-bottom: 1px solid var(--border); }
.hero-eyebrow {
  font-size: 0.72rem; letter-spacing: 0.18em; color: var(--accent);
  text-transform: uppercase; font-weight: 600; margin-bottom: 1.4rem;
  display: flex; align-items: center; gap: 0.75rem;
}
.hero-eyebrow::after { content: ''; flex: 1; height: 1px; background: var(--border-strong); max-width: 90px; }

h1 {
  font-family: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  font-size: clamp(2.4rem, 5.5vw, 4.2rem); font-weight: 500;
  line-height: 1.06; color: var(--text); margin-bottom: 1.3rem; letter-spacing: -0.015em;
}
h1 em { font-style: italic; font-weight: 400; color: var(--accent); }

.hero-sub { font-size: 0.95rem; color: var(--text2); line-height: 1.7; max-width: 640px; }

.hero-stats { display: flex; gap: 3.5rem; margin-top: 2.5rem; padding-top: 1.75rem; border-top: 1px solid var(--border); }
.stat-item { display: flex; flex-direction: column; gap: 0.35rem; }
.stat-num { font-family: 'Source Serif 4', Georgia, serif; font-size: 2.1rem; font-weight: 500; color: var(--accent); line-height: 1; }
.stat-label { font-size: 0.68rem; color: var(--muted); letter-spacing: 0.1em; text-transform: uppercase; }

/* BREADCRUMB */
.breadcrumb { font-size: 0.72rem; color: var(--muted); letter-spacing: 0.04em; margin-bottom: 1.25rem; }
.breadcrumb a { color: var(--text2); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--border-strong); margin: 0 0.5rem; }

/* SECTION HEADERS */
.tools-section { padding: 3.25rem 0 1rem; }
.section-header { display: flex; align-items: center; gap: 1rem; margin: 2.5rem 0 1.5rem; }
.section-header:first-of-type { margin-top: 0; }
.section-label { font-size: 0.74rem; letter-spacing: 0.13em; color: var(--text); text-transform: uppercase; font-weight: 600; }
.section-line { flex: 1; height: 1px; background: var(--border); }

/* CATEGORY GRID (landing) */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1rem;
}
.category-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.75rem;
  display: flex; flex-direction: column;
  min-height: 248px;
  text-decoration: none; color: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}
.category-card:hover {
  border-color: var(--accent);
  box-shadow: 0 10px 30px rgba(18,38,32,0.10);
  transform: translateY(-2px);
}
.category-index { font-family: 'Source Serif 4', Georgia, serif; font-size: 0.95rem; color: var(--accent); font-weight: 600; letter-spacing: 0.08em; margin-bottom: 1rem; }
.category-name { font-size: 1.4rem; font-weight: 600; letter-spacing: -0.015em; color: var(--text); margin-bottom: 0.55rem; line-height: 1.2; }
.category-desc { font-size: 0.85rem; color: var(--text2); line-height: 1.6; margin-bottom: 1.1rem; }
.category-foot { margin-top: auto; padding-top: 1.1rem; display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--border); }
.category-count { font-size: 0.72rem; color: var(--muted); letter-spacing: 0.04em; }
.category-arrow { font-size: 0.82rem; color: var(--accent); font-weight: 600; transition: transform 0.15s ease; }
.category-card:hover .category-arrow { transform: translateX(4px); }

/* SUBTYPE GRID (category pages) */
.subtype-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(284px, 1fr));
  gap: 1rem;
}
.subtype-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.4rem 1.5rem;
  display: flex; flex-direction: column;
  min-height: 116px;
  text-decoration: none; color: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}
.subtype-card:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 24px rgba(18,38,32,0.09);
  transform: translateY(-2px);
}
.subtype-cta { margin-top: auto; padding-top: 1rem; font-size: 0.74rem; font-weight: 600; color: var(--accent); letter-spacing: 0.02em; transition: transform 0.15s ease; }
.subtype-card:hover .subtype-cta { transform: translateX(4px); }

/* PLACEHOLDER (stub pages) */
.placeholder {
  background: var(--surface);
  border: 1px dashed var(--border-strong);
  border-radius: 12px;
  padding: 3rem 2rem;
  text-align: center;
}
.placeholder p { font-size: 0.9rem; color: var(--text2); line-height: 1.7; max-width: 460px; margin: 0 auto; }
.placeholder .ph-label { display: block; font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); font-weight: 600; margin-bottom: 0.9rem; }
.subtype-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 0.75rem; margin-bottom: 0.5rem; }
.subtype-name { font-size: 1.02rem; font-weight: 600; color: var(--text); line-height: 1.3; letter-spacing: -0.01em; }
.subtype-badge { flex-shrink: 0; font-size: 0.58rem; letter-spacing: 0.07em; text-transform: uppercase; padding: 0.26rem 0.55rem; border-radius: 999px; font-weight: 600; }
.badge-live { background: var(--accent-soft); color: var(--accent); }
.badge-ref { background: #eef1f0; color: var(--muted); }

.chips { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: auto; padding-top: 1rem; }
.chip {
  font-size: 0.68rem; letter-spacing: 0.01em; font-weight: 600;
  padding: 0.32rem 0.65rem; border-radius: 7px;
  background: var(--accent-soft); color: var(--accent);
  text-decoration: none; border: 1px solid transparent;
  transition: background 0.15s ease, color 0.15s ease;
}
.chip:hover { background: var(--accent); color: #fff; }
.subtype-note { margin-top: auto; padding-top: 1rem; font-size: 0.74rem; color: var(--muted); }

/* TOOL CARDS (cross-sector) */
.tools-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 1rem; }
.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  display: flex; flex-direction: column;
  min-height: 200px;
  text-decoration: none; color: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}
.tool-card:hover { border-color: var(--accent); box-shadow: 0 8px 28px rgba(18,38,32,0.10); transform: translateY(-2px); }
.card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.1rem; }
.card-icon { width: 38px; height: 38px; border-radius: 9px; background: var(--accent-soft); color: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 1.05rem; }
.card-status { font-size: 0.62rem; letter-spacing: 0.07em; text-transform: uppercase; padding: 0.28rem 0.6rem; border-radius: 999px; font-weight: 600; background: var(--accent-soft); color: var(--accent); }
.card-title { font-size: 1.08rem; font-weight: 600; color: var(--text); margin-bottom: 0.5rem; line-height: 1.25; letter-spacing: -0.01em; }
.card-sub { font-size: 0.82rem; color: var(--text2); line-height: 1.6; margin-bottom: 1.1rem; }
.card-arrow { margin-top: auto; padding-top: 1.1rem; font-size: 0.78rem; color: var(--accent); letter-spacing: 0.02em; font-weight: 600; transition: transform 0.15s ease; }
.tool-card:hover .card-arrow { transform: translateX(4px); }

/* FOOTER */
footer { border-top: 1px solid var(--border); padding: 2rem 0; margin-top: 3rem; }
footer .wrap { display: flex; justify-content: center; }
.footer-text { font-size: 0.72rem; color: var(--muted); letter-spacing: 0.04em; }

/* ANIMATIONS */
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }
.hero-eyebrow { animation: fadeUp 0.5s ease both; }
h1 { animation: fadeUp 0.5s 0.08s ease both; }
.hero-sub { animation: fadeUp 0.5s 0.16s ease both; }
.hero-stats { animation: fadeUp 0.5s 0.24s ease both; }

@media (max-width: 640px) {
  .wrap { padding: 0 1.25rem; }
  .hero-stats { gap: 2rem; }
}

/* ============ SHARED NAV ENHANCEMENT + COMMAND PALETTE ============ */
.nav-meta-hide { display: none; }
.nav-actions { display: flex; align-items: center; gap: 0.4rem; margin-left: auto; }
.nav-link { font-family: inherit; font-size: 0.78rem; font-weight: 600; color: var(--text2); background: none; border: none; cursor: pointer; text-decoration: none; padding: 0.45rem 0.7rem; border-radius: 8px; letter-spacing: 0.01em; display: inline-flex; align-items: center; gap: 0.3rem; transition: background 0.12s ease, color 0.12s ease; white-space: nowrap; }
.nav-link:hover { color: var(--accent); background: var(--accent-soft); }
.nav-link.on { color: var(--accent); }
.nav-link .caret { font-size: 0.6rem; opacity: 0.7; }

.nav-dd { position: relative; }
.nav-dd-menu { position: absolute; top: calc(100% + 8px); right: 0; min-width: 230px; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; box-shadow: 0 16px 40px rgba(18,38,32,0.14); padding: 0.4rem; opacity: 0; visibility: hidden; transform: translateY(-6px); transition: opacity 0.14s ease, transform 0.14s ease, visibility 0.14s; z-index: 120; }
.nav-dd.open .nav-dd-menu { opacity: 1; visibility: visible; transform: none; }
.nav-dd-menu a { display: block; font-size: 0.82rem; color: var(--text); text-decoration: none; padding: 0.5rem 0.7rem; border-radius: 8px; transition: background 0.12s ease, color 0.12s ease; }
.nav-dd-menu a:hover { background: var(--accent-soft); color: var(--accent); }
.nav-dd-menu a.on { color: var(--accent); font-weight: 600; }

.nav-search { font-family: inherit; display: inline-flex; align-items: center; gap: 0.45rem; font-size: 0.76rem; font-weight: 500; color: var(--muted); background: var(--surface-2); border: 1px solid var(--border-strong); border-radius: 9px; padding: 0.42rem 0.6rem 0.42rem 0.65rem; cursor: pointer; transition: border-color 0.12s ease, color 0.12s ease; }
.nav-search:hover { border-color: var(--accent); color: var(--accent); }
.nav-search .ns-ico { font-size: 0.95rem; }
.nav-search .ns-kbd { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.62rem; color: var(--muted); background: var(--surface); border: 1px solid var(--border); border-radius: 5px; padding: 0.08rem 0.32rem; }

/* Command palette overlay */
.cmdk { position: fixed; inset: 0; background: rgba(16,26,22,0.42); backdrop-filter: blur(3px); display: flex; align-items: flex-start; justify-content: center; padding-top: 14vh; opacity: 0; visibility: hidden; transition: opacity 0.16s ease, visibility 0.16s; z-index: 1000; }
.cmdk.show { opacity: 1; visibility: visible; }
.cmdk-box { width: min(580px, 92vw); max-height: 70vh; background: var(--surface); border: 1px solid var(--border); border-radius: 16px; box-shadow: 0 28px 70px rgba(8,20,14,0.32); display: flex; flex-direction: column; overflow: hidden; transform: translateY(-8px) scale(0.99); transition: transform 0.16s ease; }
.cmdk.show .cmdk-box { transform: none; }
.cmdk-in { display: flex; align-items: center; gap: 0.6rem; padding: 0.95rem 1.1rem; border-bottom: 1px solid var(--border); }
.cmdk-ico { color: var(--muted); font-size: 1.1rem; }
.cmdk-in input { flex: 1; border: none; outline: none; font-family: inherit; font-size: 1rem; color: var(--text); background: none; }
.cmdk-in input::placeholder { color: var(--muted); }
.cmdk-esc { font-family: ui-monospace, monospace; font-size: 0.62rem; color: var(--muted); background: var(--surface-2); border: 1px solid var(--border); border-radius: 5px; padding: 0.12rem 0.4rem; }
.cmdk-results { overflow-y: auto; padding: 0.4rem; }
.cmdk-grp { font-size: 0.62rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); font-weight: 600; padding: 0.7rem 0.75rem 0.35rem; }
.cmdk-row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.55rem 0.75rem; border-radius: 9px; text-decoration: none; cursor: pointer; }
.cmdk-row .cmdk-t { font-size: 0.88rem; color: var(--text); font-weight: 500; }
.cmdk-row .cmdk-g { font-size: 0.68rem; color: var(--muted); }
.cmdk-row.on { background: var(--accent-soft); }
.cmdk-row.on .cmdk-t { color: var(--accent); font-weight: 600; }
.cmdk-empty { padding: 1.6rem 0.9rem; text-align: center; color: var(--muted); font-size: 0.85rem; }
.cmdk-foot { display: flex; gap: 1.2rem; padding: 0.6rem 1.1rem; border-top: 1px solid var(--border); font-size: 0.68rem; color: var(--muted); }
.cmdk-foot kbd { font-family: ui-monospace, monospace; font-size: 0.62rem; background: var(--surface-2); border: 1px solid var(--border); border-radius: 4px; padding: 0.05rem 0.3rem; margin-right: 0.15rem; }

@media (max-width: 720px) {
  .nav-search .ns-txt, .nav-search .ns-kbd { display: none; }
  .nav-link { padding: 0.45rem 0.5rem; }
}
@media (max-width: 520px) {
  .nav-dd, .nav-actions > a.nav-link { display: none; }
}