.tools-hub {
  --hub-blue: #1847F0;
  --hub-blue-dark: #1038d0;
  --hub-black: #080C14;
  --hub-body: #232A3B;
  --hub-muted: #5F6B80;
  --hub-gray: #F2F4FA;
  --hub-border: rgba(24, 71, 240, 0.12);
  color: var(--hub-body);
}

.tools-hub h1,
.tools-hub h2,
.tools-hub h3,
.tools-hub p,
.tools-hub ul,
.tools-hub ol {
  margin: 0;
  padding: 0;
}

.tools-hub ul,
.tools-hub ol {
  list-style: none;
}

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

.tools-hub a:focus-visible,
.tools-hub input:focus-visible {
  outline: 2px solid var(--hub-blue);
  outline-offset: 3px;
}

.hub-wrap {
  max-width: 1280px;
  margin: 0 auto;
  padding: 40px 48px 16px;
}

.hub-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--hub-muted);
}

.hub-breadcrumb li + li::before {
  content: '/';
  margin-right: 8px;
  color: var(--hub-border);
}

.tools-hub .hub-breadcrumb a:hover {
  color: var(--hub-blue);
}

.hub-hero {
  max-width: 760px;
  padding: 40px 0 36px;
}

.hub-label {
  display: block;
  margin-bottom: 14px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--hub-blue);
}

.tools-hub .hub-title {
  font-size: clamp(32px, 4.4vw, 52px);
  font-weight: 800;
  line-height: 1.08;
  color: var(--hub-black);
}

.tools-hub .hub-intro {
  margin-top: 18px;
  font-size: 17px;
  line-height: 1.7;
  color: var(--hub-muted);
}

.tools-hub .hub-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.hub-stats li {
  padding: 7px 14px;
  border: 1px solid var(--hub-border);
  border-radius: 100px;
  font-size: 13.5px;
  color: var(--hub-muted);
  background: #fff;
}

.hub-stats strong {
  color: var(--hub-black);
  font-weight: 700;
}

.hub-search {
  max-width: 560px;
}

.hub-search-label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--hub-black);
}

.hub-search input {
  width: 100%;
  padding: 13px 18px;
  border: 1.5px solid var(--hub-border);
  border-radius: 12px;
  font: inherit;
  font-size: 15px;
  color: var(--hub-black);
  background: #fff;
  transition: border-color .2s, box-shadow .2s;
}

.hub-search input:focus {
  border-color: var(--hub-blue);
  box-shadow: 0 0 0 4px rgba(24, 71, 240, 0.1);
  outline: none;
}

.tools-hub .hub-search-status {
  min-height: 20px;
  margin-top: 8px;
  font-size: 13px;
  color: var(--hub-muted);
}

.tools-hub .hub-chips ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.tools-hub .hub-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--hub-border);
  border-radius: 100px;
  font-size: 14px;
  font-weight: 500;
  color: var(--hub-black);
  background: var(--hub-gray);
  transition: border-color .2s, color .2s;
}

.hub-chip span {
  font-size: 12px;
  font-weight: 600;
  color: var(--hub-blue);
}

.tools-hub .hub-chip:hover {
  border-color: var(--hub-blue);
  color: var(--hub-blue);
}

.hub-section {
  padding-top: 56px;
  scroll-margin-top: 88px;
}

.hub-section-head {
  max-width: 640px;
  margin-bottom: 24px;
}

.tools-hub .hub-section-title {
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 800;
  line-height: 1.2;
  color: var(--hub-black);
}

.hub-count {
  display: inline-block;
  margin-left: 6px;
  padding: 2px 10px;
  border-radius: 100px;
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0;
  vertical-align: middle;
  color: var(--hub-blue);
  background: rgba(24, 71, 240, 0.08);
}

.tools-hub .hub-section-desc {
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--hub-muted);
}

.tools-hub .hub-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.hub-grid > li {
  display: flex;
}

.tools-hub .hub-card {
  display: flex;
  flex-direction: column;
  width: 100%;
  padding: 24px;
  border: 1px solid var(--hub-border);
  border-radius: 18px;
  background: #fff;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}

.tools-hub .hub-card:hover {
  transform: translateY(-4px);
  border-color: var(--hub-blue);
  box-shadow: 0 20px 50px rgba(24, 71, 240, 0.12);
}

.hub-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 18px;
  border-radius: 12px;
  color: var(--hub-blue);
  background: rgba(24, 71, 240, 0.08);
  transition: background .25s, color .25s;
}

.hub-card:hover .hub-icon {
  color: #fff;
  background: var(--hub-blue);
}

.tools-hub .hub-card-name {
  margin-bottom: 8px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--hub-black);
}

.tools-hub .hub-card-desc {
  flex-grow: 1;
  margin-bottom: 16px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--hub-muted);
}

.hub-card-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--hub-blue);
}

.hub-popular .hub-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.tools-hub .hub-empty {
  padding: 48px 0 8px;
  font-size: 15px;
  color: var(--hub-muted);
}

.hub-more {
  margin-top: 72px;
  padding: 32px;
  border-radius: 18px;
  background: var(--hub-gray);
}

.tools-hub .hub-more p {
  max-width: 640px;
  margin-top: 10px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--hub-muted);
}

.tools-hub .hub-more a {
  font-weight: 600;
  color: var(--hub-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.tools-hub .hub-more a:hover {
  color: var(--hub-blue-dark);
}

.tools-hub [hidden] {
  display: none !important;
}

@media (max-width: 1080px) {
  .hub-wrap { padding: 32px 32px 16px; }
  .tools-hub .hub-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .tools-hub .hub-grid,
  .hub-popular .hub-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .hub-wrap { padding: 24px 20px 8px; }
  .hub-hero { padding: 28px 0 28px; }
  .tools-hub .hub-intro { font-size: 16px; }
  .tools-hub .hub-grid,
  .hub-popular .hub-grid { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .tools-hub .hub-card { padding: 20px; }
  .hub-section { padding-top: 44px; }
  .hub-more { padding: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  .tools-hub * { transition: none !important; }
}