:root {
  --tools-surface: #ffffff;
  --tools-surface-soft: #f7faff;
  --tools-border: rgba(15, 23, 42, 0.1);
  --tools-shadow: 0 14px 34px rgba(15, 23, 42, 0.08);
}

body.page-tool {
  background: linear-gradient(180deg, #f5f8ff 0%, #ffffff 36%);
}

.site-header,
.site-header.is-scrolled {
  border-bottom: 0;
  box-shadow: none;
}

.tools-hub-page {
  padding: 28px 0 72px;
  position: relative;
}

.tools-hub {
  position: relative;
}

.tools-hub::before {
  content: "";
  position: absolute;
  inset: -24px 0 auto 0;
  height: 320px;
  pointer-events: none;
  background:
    radial-gradient(560px 260px at 24% 0%, rgba(31, 100, 212, 0.13), transparent 74%),
    radial-gradient(520px 220px at 78% 6%, rgba(15, 163, 177, 0.12), transparent 74%);
}

.tools-hub .container {
  position: relative;
  z-index: 1;
}

.tools-hub__hero {
  max-width: 760px;
  margin: 0 auto 34px;
  text-align: center;
}

.tools-hub__title {
  margin: 0;
  font-family: "Syne", "Inter", system-ui, sans-serif;
  font-size: clamp(2rem, 5vw, 3.1rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.tools-hub__title span {
  display: inline-block;
  padding: 0.08em 0.3em 0.14em;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #ffffff;
}

.tools-hub__sub {
  margin: 14px auto 0;
  max-width: 66ch;
  color: var(--text);
  font-size: 1rem;
}

.tools-hub__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.tools-card {
  background: var(--tools-surface);
  border: 1px solid var(--tools-border);
  border-radius: 16px;
  box-shadow: var(--tools-shadow);
  padding: 16px;
  display: grid;
  gap: 10px;
  min-height: 192px;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

a.tools-card {
  color: inherit;
  text-decoration: none;
}

.tools-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 36px rgba(15, 23, 42, 0.1);
  border-color: rgba(31, 100, 212, 0.34);
}

a.tools-card:focus-visible {
  outline: 3px solid rgba(31, 100, 212, 0.35);
  outline-offset: 2px;
}

.tools-card--active {
  border-color: rgba(31, 100, 212, 0.32);
  box-shadow: 0 0 0 1px rgba(31, 100, 212, 0.16) inset, var(--tools-shadow);
}

.tools-card__icon {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  border: 1px solid transparent;
}

.tools-card__icon--indigo {
  background: #eef3ff;
  color: #2f59d6;
  border-color: #c9d8ff;
}

.tools-card__icon--pink {
  background: #fff0f8;
  color: #cc4a87;
  border-color: #f7c7de;
}

.tools-card__icon--blue {
  background: #ecf6ff;
  color: #2265c6;
  border-color: #bedbfd;
}

.tools-card__icon--orange {
  background: #fff4e8;
  color: #be6a18;
  border-color: #f2cfaa;
}

.tools-card__icon--green {
  background: #ebfaef;
  color: #1e8a4a;
  border-color: #b9e8c9;
}

.tools-card__icon--violet {
  background: #f1edff;
  color: #6a4cc8;
  border-color: #d3c8f5;
}

.tools-card__icon--red {
  background: #ffefef;
  color: #c43d3d;
  border-color: #f3c4c4;
}

.tools-card__icon--slate {
  background: #eef1f6;
  color: #52617a;
  border-color: #c9d3e3;
}

.tools-card__icon--teal {
  background: #ebfbf8;
  color: #167f73;
  border-color: #b8e8df;
}

.tools-card__icon--lavender {
  background: #f2f0ff;
  color: #7158d9;
  border-color: #d8cff8;
}

.tools-card__icon--amber {
  background: #fff6e8;
  color: #b56b15;
  border-color: #f2d3ab;
}

.tools-card__icon--lime {
  background: #f3fae8;
  color: #608a1f;
  border-color: #cde5aa;
}

.tools-card__icon--rose {
  background: #fff0f5;
  color: #c3477c;
  border-color: #f4c5da;
}

.tools-card__icon--cyan {
  background: #eaf9fb;
  color: #177c95;
  border-color: #b6e6ef;
}

.tools-card__icon--purple {
  background: #f2edff;
  color: #724fcb;
  border-color: #d6caf8;
}

.tools-card__icon--sky {
  background: #ecf5ff;
  color: #1f68c9;
  border-color: #c0daff;
}

.tools-card__title {
  margin: 0;
  color: var(--ink);
  font-size: 1.34rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-family: "Syne", "Inter", system-ui, sans-serif;
  font-weight: 600;
}

.tools-card__desc {
  margin: 0;
  color: var(--text);
  font-size: 0.92rem;
  line-height: 1.55;
}

.tools-hub__note {
  margin: 22px 0 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.78rem;
}

.site-footer {
  margin-top: 0;
}

@media (max-width: 1100px) {
  .tools-hub__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .tools-hub-page {
    padding-top: 20px;
  }

  .tools-hub__hero {
    margin-bottom: 20px;
  }

  .tools-hub__grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .tools-card {
    min-height: 0;
  }
}