:root {
  color-scheme: light;
  --ink: #17202a;
  --muted: #607080;
  --line: #dce4e8;
  --panel: rgba(255,255,255,.9);
  --accent: #155e63;
  --accent-soft: #e7f3f2;
  --shadow: 0 18px 50px rgba(26, 54, 65, .10);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 0%, rgba(88, 164, 155, .16), transparent 32rem),
    linear-gradient(180deg, #f8fbfb 0%, #eef4f3 100%);
}
a { color: inherit; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: .85rem clamp(1rem, 4vw, 4rem);
  border-bottom: 1px solid rgba(220, 228, 232, .9);
  background: rgba(248, 251, 251, .88);
  backdrop-filter: blur(18px);
}
.brand img { width: min(210px, 42vw); display: block; }
nav { display: flex; gap: .4rem; }
nav a {
  padding: .65rem .9rem;
  border-radius: .7rem;
  text-decoration: none;
  font-weight: 700;
  color: var(--muted);
}
nav a:hover, nav a.is-active { color: var(--accent); background: var(--accent-soft); }
main { width: min(1180px, calc(100% - 2rem)); margin: 0 auto; }
.hero { padding: clamp(4rem, 10vw, 8rem) 0 3rem; text-align: center; }
.eyebrow { margin: 0 0 .7rem; color: var(--accent); letter-spacing: .16em; font-size: .76rem; font-weight: 900; }
h1 { max-width: 850px; margin: 0 auto; font-size: clamp(2.5rem, 7vw, 5.5rem); line-height: .98; letter-spacing: -.055em; }
.hero-copy { max-width: 700px; margin: 1.4rem auto 2rem; color: var(--muted); font-size: clamp(1rem, 2vw, 1.25rem); line-height: 1.6; }
.search-wrap {
  display: flex;
  align-items: center;
  max-width: 760px;
  margin: 0 auto;
  padding: .55rem .65rem .55rem 1rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: white;
  box-shadow: var(--shadow);
}
.search-wrap input { width: 100%; border: 0; outline: 0; font: inherit; font-size: 1.05rem; background: transparent; }
kbd { white-space: nowrap; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: .45rem; padding: .35rem .5rem; color: var(--muted); background: #f7f9fa; font: 700 .75rem/1 system-ui; }
.filters { display: flex; flex-wrap: wrap; justify-content: center; gap: .55rem; margin-top: 1.35rem; }
.filter-btn { border: 1px solid var(--line); border-radius: 999px; padding: .55rem .85rem; background: rgba(255,255,255,.75); color: var(--muted); font: 700 .88rem/1 system-ui; cursor: pointer; }
.filter-btn:hover, .filter-btn.is-active { border-color: var(--accent); color: white; background: var(--accent); }
.catalogue { padding: 2rem 0 6rem; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 1rem; margin-bottom: 1.4rem; }
h2 { margin: 0; font-size: clamp(1.7rem, 4vw, 2.6rem); letter-spacing: -.035em; }
.result-count { margin: 0; color: var(--muted); }
.tool-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 1rem; }
.tool-card {
  display: flex;
  flex-direction: column;
  min-height: 230px;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 1.1rem;
  background: var(--panel);
  box-shadow: 0 8px 28px rgba(26,54,65,.06);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.tool-card:hover { transform: translateY(-3px); border-color: #a8c9c5; box-shadow: var(--shadow); }
.tool-meta { display: flex; justify-content: space-between; align-items: center; gap: .7rem; }
.tool-icon { display: grid; place-items: center; width: 2.4rem; height: 2.4rem; border-radius: .75rem; background: var(--accent-soft); font-size: 1.2rem; }
.tool-category { color: var(--accent); font-size: .73rem; font-weight: 900; letter-spacing: .09em; text-transform: uppercase; }
.tool-card h3 { margin: 1rem 0 .55rem; font-size: 1.2rem; }
.tool-card p { margin: 0; color: var(--muted); line-height: 1.55; }
.tool-tags { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: .8rem; }
.tool-tags span { padding: .28rem .48rem; border-radius: .4rem; color: #56636d; background: #eef2f3; font-size: .72rem; }
.tool-link { margin-top: auto; padding-top: 1.2rem; color: var(--accent); font-weight: 850; text-decoration: none; }
.tool-link::after { content: " →"; }
.empty-state { padding: 4rem 1rem; border: 1px dashed var(--line); border-radius: 1rem; text-align: center; background: rgba(255,255,255,.5); }
.empty-state h3 { margin-bottom: .4rem; }
.empty-state p { margin: 0; color: var(--muted); }
footer { display: flex; justify-content: space-between; gap: 1rem; padding: 1.5rem clamp(1rem,4vw,4rem); border-top: 1px solid var(--line); color: var(--muted); font-size: .88rem; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
@media (max-width: 850px) { .tool-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } }
@media (max-width: 620px) {
  .site-header { align-items: flex-start; flex-direction: column; gap: .55rem; }
  nav { width: 100%; overflow-x: auto; }
  .hero { padding-top: 3.2rem; }
  .tool-grid { grid-template-columns: 1fr; }
  .section-heading, footer { align-items: flex-start; flex-direction: column; }
  kbd { display: none; }
}