/* Free tools: /tools, /tools/ssl-checker, /tools/uptime-calculator, /tools/status-badge,
   /tools/gpu-calculator, /tools/webhook-tester, /tools/redirect-checker,
   /tools/cron-expression-generator, /tools/cron.
   Shared with the marketing chrome in styles.css. */

.tool-main {
  gap: var(--space-10);
}
.tool-main > * { min-width: 0; }
/* .landing-main > .landing-footer pulls the footer up and clears its padding.
   Match /docs: 64px from the last block to the rule (band padding plus
   main padding), then 24px from the rule to the column headings. */
.tool-main > .landing-footer {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
}
.tool-main [hidden] { display: none !important; }
.tool-stack { display: grid; gap: var(--space-5); }
.tool-stack > * { min-width: 0; }

/* Hero */
.tool-hero {
  display: grid;
  gap: var(--space-4);
  justify-items: start;
  max-width: 44rem;
}
.tool-hero .landing-title { margin: 0; font-weight: 400; }
.tool-hero .landing-feature-lead { margin: 0; }
.tool-crumbs {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}
.tool-crumbs a { color: inherit; text-decoration: none; }
.tool-crumbs a:hover { color: var(--color-text); }

/* Two-column work area */
.tool-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: var(--space-8);
  align-items: start;
}
.tool-grid--stack { grid-template-columns: minmax(0, 1fr); }
.tool-grid > * { min-width: 0; }

.tool-panel {
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  padding: var(--space-6);
  display: grid;
  gap: var(--space-5);
}
.tool-panel--sticky { position: sticky; top: calc(var(--space-6) + 56px); }
.tool-panel-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
}
.tool-panel-head h2,
.tool-panel-head h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
}
.tool-panel-head span { font-size: 0.8125rem; color: var(--color-text-muted); }

/* Form controls */
.tool-fieldset {
  border: 0;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
}
.tool-fieldset > legend {
  padding: 0;
  margin-bottom: var(--space-2);
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
}
.tool-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}
.tool-field { display: grid; gap: 0.35rem; min-width: 0; }
/* Two-column rows: shared label / control / hint tracks (no dead space under short labels). */
@supports (grid-template-rows: subgrid) {
  .tool-row {
    grid-template-rows: auto var(--btn-h) minmax(calc(0.75rem * 1.45), auto);
  }
  .tool-row > .tool-field {
    grid-template-rows: subgrid;
    grid-row: span 3;
  }
  .tool-row > .tool-field > .tool-label { line-height: 1.45; }
}
.tool-label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text);
}
.tool-hint {
  margin: 0;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  line-height: 1.45;
}
.tool-input,
.tool-select {
  width: 100%;
  box-sizing: border-box;
  height: var(--btn-h);
  min-height: var(--btn-h);
  padding: 0 var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface-2);
  color: var(--color-text);
  font: inherit;
  font-size: 0.875rem;
}
.tool-input::placeholder { color: var(--color-text-faint); }
.tool-input:focus,
.tool-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--color-primary) 25%, transparent);
}
.tool-input[aria-invalid="true"] { border-color: #c23b3b; }
.tool-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.tool-input-wrap .tool-input { padding-right: 2.6rem; }
.tool-input-suffix {
  position: absolute;
  right: var(--space-3);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  pointer-events: none;
}
.tool-input-prefix {
  position: absolute;
  left: var(--space-3);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  pointer-events: none;
}
.tool-input-wrap--prefix .tool-input { padding-left: 5.4rem; padding-right: var(--space-3); }

/* Chips (quick picks, segmented) */
.tool-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.tool-chip {
  appearance: none;
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-full);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 500;
  padding: 0.3rem 0.7rem;
  cursor: pointer;
  font-variant-numeric: tabular-nums;
}
.tool-chip:hover { color: var(--color-text); border-color: var(--color-border); }
.tool-chip[aria-pressed="true"],
.tool-chip[aria-checked="true"] {
  background: var(--color-text);
  border-color: var(--color-text);
  color: var(--color-bg);
}
.tool-seg {
  display: inline-grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-surface-2);
}
.tool-seg button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--color-text-muted);
  font: inherit;
  font-size: 0.8125rem;
  font-weight: 500;
  padding: 0.45rem 0.8rem;
  cursor: pointer;
  white-space: nowrap;
}
.tool-seg button + button { border-left: 1px solid var(--color-divider); }
.tool-seg button[aria-selected="true"] {
  background: var(--color-text);
  color: var(--color-bg);
}
.tool-seg.tool-seg--wrap {
  display: grid;
  grid-auto-flow: row;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  width: 100%;
}
.tool-seg.tool-seg--wrap button + button { border-left: 0; }
.tool-seg.tool-seg--wrap button:nth-child(even) { border-left: 1px solid var(--color-divider); }
.tool-seg.tool-seg--wrap button:nth-child(n+3) { border-top: 1px solid var(--color-divider); }

/* One dual-thumb range (latency min and max on a single track). */
.tool-dual {
  display: grid;
  gap: var(--space-2);
}
.tool-dual-slider {
  position: relative;
  height: 24px;
  --tool-dual-thumb: 18px;
  --tool-dual-accent: var(--color-text);
}
.tool-dual-track {
  position: absolute;
  left: calc(var(--tool-dual-thumb) / 2);
  right: calc(var(--tool-dual-thumb) / 2);
  top: 50%;
  height: 6px;
  transform: translateY(-50%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-surface-offset);
  overflow: hidden;
  pointer-events: none;
}
.tool-dual-connect {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 0;
  background: var(--tool-dual-accent);
  border-radius: var(--radius-full);
}
.tool-dual-input {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 24px;
  margin: 0;
  background: none;
  pointer-events: none;
  -webkit-appearance: none;
  appearance: none;
}
.tool-dual-input:focus { outline: none; }
.tool-dual-input::-webkit-slider-runnable-track {
  height: 6px;
  background: transparent;
  border: 0;
}
.tool-dual-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  pointer-events: auto;
  width: var(--tool-dual-thumb);
  height: var(--tool-dual-thumb);
  margin-top: -6px;
  border: 2px solid var(--tool-dual-accent);
  border-radius: var(--radius-full);
  background: var(--color-surface-2);
  box-shadow: 0 1px 2px color-mix(in oklch, var(--color-text) 10%, transparent);
  cursor: grab;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.tool-dual-input::-moz-range-track {
  height: 6px;
  background: transparent;
  border: 0;
}
.tool-dual-input::-moz-range-thumb {
  pointer-events: auto;
  width: var(--tool-dual-thumb);
  height: var(--tool-dual-thumb);
  border: 2px solid var(--tool-dual-accent);
  border-radius: var(--radius-full);
  background: var(--color-surface-2);
  box-shadow: 0 1px 2px color-mix(in oklch, var(--color-text) 10%, transparent);
  cursor: grab;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.tool-dual-input:hover::-webkit-slider-thumb,
.tool-dual-input:hover::-moz-range-thumb {
  background: var(--color-surface-offset);
}
.tool-dual-input:focus-visible::-webkit-slider-thumb,
.tool-dual-input:focus-visible::-moz-range-thumb {
  border-color: var(--tool-dual-accent);
  box-shadow:
    0 1px 2px color-mix(in oklch, var(--color-text) 10%, transparent),
    0 0 0 3px color-mix(in oklch, var(--tool-dual-accent) 25%, transparent);
}
.tool-dual-input:active::-webkit-slider-thumb,
.tool-dual-input:active::-moz-range-thumb { cursor: grabbing; }
.tool-dual-value {
  margin: 0;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
}

/* Results */
.tool-stat {
  display: grid;
  gap: 0.2rem;
  padding: var(--space-4) var(--space-5);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
}
.tool-stat b {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.tool-stat span { font-size: 0.8125rem; color: var(--color-text-muted); }
.tool-stat--accent b { color: var(--color-primary); }
.tool-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}
.tool-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.tool-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
}
.tool-table th,
.tool-table td {
  text-align: left;
  padding: 0.55rem 0.6rem;
  border-bottom: 1px solid var(--color-divider);
  vertical-align: top;
}
.tool-table th {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.tool-table td.is-num,
.tool-table th.is-num { text-align: right; }
.tool-table tbody tr:last-child td { border-bottom: 0; }
.tool-table tr.is-hit td { background: var(--color-primary-highlight); }
.tool-table td b { font-weight: 600; }
.tool-table small { color: var(--color-text-muted); }

.tool-kv {
  margin: 0;
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 0.4rem var(--space-4);
  font-size: 0.875rem;
}
.tool-kv dt { color: var(--color-text-muted); }
.tool-kv dd { margin: 0; font-variant-numeric: tabular-nums; }

.tool-note {
  margin: 0;
  padding: var(--space-3) var(--space-4);
  border-left: 3px solid var(--color-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--color-surface-offset);
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--color-text);
}
.tool-note--ok { border-left-color: var(--color-success); }
.tool-note--bad { border-left-color: #c23b3b; }
.tool-note a { color: inherit; }

.tool-list {
  margin: 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.35rem;
  font-size: 0.875rem;
}
.tool-list b { font-weight: 600; }

/* Snippets + copy */
.tool-snippet {
  display: grid;
  gap: 0.35rem;
}
.tool-snippet-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.tool-snippet { min-width: 0; max-width: 100%; }
.tool-code {
  margin: 0;
  min-width: 0;
  max-width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-sm);
  background: var(--color-surface-2);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--color-text);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.tool-code code {
  font: inherit;
  background: none;
  padding: 0;
  border: 0;
  color: inherit;
}
.tool-copy-btn {
  appearance: none;
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-sm);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  font: inherit;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: none;
  padding: 0.25rem 0.55rem;
  cursor: pointer;
}
.tool-copy-btn:hover { border-color: var(--color-border); color: var(--color-text); }
.tool-copy-btn.is-copied { border-color: var(--color-success); color: var(--color-success); }

/* Badge builder */
.tool-badge-preview {
  display: grid;
  place-items: center;
  min-height: 7rem;
  padding: var(--space-5);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  background:
    linear-gradient(45deg, var(--color-surface-offset) 25%, transparent 25%, transparent 75%, var(--color-surface-offset) 75%),
    linear-gradient(45deg, var(--color-surface-offset) 25%, transparent 25%, transparent 75%, var(--color-surface-offset) 75%);
  background-size: 16px 16px;
  background-position: 0 0, 8px 8px;
  background-color: var(--color-surface-2);
}
.tool-badge-preview svg { display: block; max-width: 100%; height: auto; }
.tool-badge-preview svg .t { fill: var(--color-text); }
.tool-badge-live {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 2rem;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}
.tool-badge-live img { display: block; height: 20px; }
.tool-badge-live img[hidden] { display: none; }

/* Webhook tester */
.tool-textarea {
  display: block;
  height: auto;
  min-width: 0;
  max-width: 100%;
  min-height: 15rem;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.5;
  resize: vertical;
  white-space: pre;
  overflow: auto;
}
.tool-textarea--short {
  min-height: 4.5rem;
}
.tool-inline {
  display: flex;
  gap: var(--space-2);
  align-items: center;
}
.tool-inline .tool-input { flex: 1 1 auto; min-width: 0; }
.tool-editor-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
}
.tool-json-status {
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
}
.tool-json-status.is-ok { color: var(--color-success); }
.tool-json-status.is-bad { color: #c23b3b; }
.tool-copy-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.tool-seg.tool-seg--kinds {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  width: 100%;
  border: 0;
  background: transparent;
  overflow: visible;
}
.tool-seg.tool-seg--kinds button {
  flex: 0 0 auto;
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-full);
  background: var(--color-surface-2);
}
.tool-seg.tool-seg--kinds button + button { border-left: 1px solid var(--color-divider); }
.tool-seg.tool-seg--kinds button[aria-selected="true"] {
  background: var(--color-text);
  border-color: var(--color-text);
  color: var(--color-bg);
}
.tool-webhook-preview {
  display: grid;
  gap: var(--space-3);
  align-content: start;
  min-width: 0;
  max-width: 100%;
  min-height: 7rem;
  padding: var(--space-4);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
  overflow-wrap: anywhere;
}
.tool-webhook-preview .tool-note { margin: 0; }
.tool-msg-card {
  display: grid;
  gap: 0.45rem;
  min-width: 0;
  max-width: 100%;
  padding: var(--space-4);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 450;
  line-height: 1.5;
}
.tool-msg-card .tool-json-row {
  font-family: var(--font-body);
  font-size: inherit;
  font-weight: inherit;
  line-height: inherit;
}
.tool-msg-head {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.875rem;
  font-weight: 600;
}
.tool-msg-badge {
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-sm);
  padding: 0.05rem 0.3rem;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
}
.tool-msg-body,
.tool-msg-context {
  margin: 0;
  min-width: 0;
  max-width: 100%;
  overflow-wrap: anywhere;
}
.tool-msg-body {
  font-size: 0.875rem;
  line-height: 1.5;
}
.tool-msg-body a,
.tool-msg-context a,
.tool-json-row a {
  color: var(--color-primary);
  overflow-wrap: anywhere;
}
.tool-msg-body code {
  font-family: var(--font-mono);
  font-size: 0.85em;
}
.tool-msg-context {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}
.tool-msg-attach {
  display: grid;
  gap: 0.2rem;
  padding-left: var(--space-3);
  border-left: 3px solid var(--color-primary);
}
.tool-pd-pill {
  display: inline-block;
  border-radius: var(--radius-full);
  padding: 0.1rem 0.5rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: #fff;
}
.tool-pd-pill.is-trigger { background: #cf222e; }
.tool-pd-pill.is-ack { background: #d4a72c; color: #1e1c17; }
.tool-pd-pill.is-resolve { background: var(--color-success); }
.tool-webhook-banner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  align-items: baseline;
  font-size: 0.875rem;
}
.tool-webhook-event {
  font-family: var(--font-display);
  font-weight: 600;
}
.tool-json-tree {
  min-width: 0;
  max-width: 100%;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.45;
  overflow-wrap: anywhere;
}
.tool-webhook-preview:not(.is-json) .tool-json-tree,
.tool-webhook-preview:not(.is-json) .tool-webhook-banner,
.tool-webhook-preview:not(.is-json) .tool-webhook-event {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 450;
  line-height: 1.5;
}
.tool-webhook-preview:not(.is-json) .tool-webhook-event {
  font-weight: 600;
}
.tool-json-row {
  display: grid;
  grid-template-columns: minmax(5.5rem, max-content) minmax(0, 1fr);
  gap: 0.15rem 0.75rem;
  align-items: start;
  min-width: 0;
  max-width: 100%;
}
.tool-json-row > * {
  min-width: 0;
  overflow-wrap: anywhere;
}
.tool-json-key { color: var(--color-text-muted); }
.tool-json-nest {
  display: grid;
  gap: 0.1rem;
  min-width: 0;
  padding-left: 0.75rem;
  border-left: 1px solid var(--color-divider);
}
.tool-actions .landing-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

/* GPU calculator */
.tool-gpu-form {
  display: grid;
  gap: var(--space-6);
}
.tool-gpu-section {
  display: grid;
  gap: var(--space-4);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-divider);
}
.tool-gpu-section:first-child { border-top: 0; padding-top: 0; }
.tool-gpu-section > h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
}
.tool-gpu-section > h2 small {
  margin-left: 0.4rem;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--color-text-muted);
}
.tool-gpu-results { display: grid; gap: var(--space-5); }
.tool-gpu-results h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
}
.tool-gpu-results p { margin: 0; font-size: 0.875rem; line-height: 1.55; }
.tool-gpu-results p + p { margin-top: 0.4rem; }
.tool-gpu-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}
.tool-gpu-card {
  padding: var(--space-4);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
}
.tool-gpu-card--wide { grid-column: 1 / -1; }
.tool-status {
  margin: 0;
  font-size: 0.8125rem;
  min-height: 1.2rem;
}
.tool-status.is-ok { color: var(--color-success); }
.tool-status.is-bad { color: #c23b3b; }
.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}
.tool-actions .landing-btn { height: var(--btn-h); }

/* SSL checker */
.tool-ssl-form { margin: 0; }
.tool-ssl-input-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-2);
  align-items: center;
}
.tool-ssl-input-row .landing-btn { height: var(--btn-h); }
.tool-ssl-mono {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.45;
  overflow-wrap: anywhere;
}
.tool-note--warn { border-left-color: #d4a72c; }
.tool-stat--ok b { color: var(--color-success); }
.tool-stat--warn b { color: #d4a72c; }
.tool-stat--bad b { color: #c23b3b; }

/* Prose: SEO copy below the tool */
.tool-prose {
  max-width: 46rem;
  display: grid;
  gap: var(--space-4);
}
.tool-prose h2 {
  margin: var(--space-4) 0 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.tool-prose h2:first-child { margin-top: 0; }
.tool-prose h3 {
  margin: var(--space-2) 0 0;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
}
.tool-prose p,
.tool-prose li {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text);
}
.tool-prose ul,
.tool-prose ol { margin: 0; padding-left: 1.25rem; display: grid; gap: 0.35rem; }
.tool-prose a { color: var(--color-text); }
.tool-prose .tool-table { font-size: 0.875rem; }
.tool-faq { margin: 0; display: grid; gap: var(--space-4); }
.tool-faq dt {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
}
.tool-faq dd { margin: 0.3rem 0 0; font-size: 0.95rem; line-height: 1.6; }
.tool-faq dd p + p { margin-top: 0.6rem; }

/* CTA band */
.tool-cta {
  display: grid;
  gap: var(--space-4);
  justify-items: start;
  padding: var(--space-6);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  background: var(--color-surface-offset);
}
.tool-cta h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.tool-cta p { margin: 0; max-width: 40rem; color: var(--color-text-muted); line-height: 1.55; }
.tool-cta .landing-intro-actions { margin: 0; }

/* /tools index */
.tool-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}
.tool-card {
  display: grid;
  gap: 0.6rem;
  align-content: start;
  padding: var(--space-6);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  color: inherit;
  text-decoration: none;
  transition: border-color 160ms ease, transform 160ms ease;
}
.tool-card:hover { border-color: var(--color-border); transform: translateY(-1px); }
.tool-card-kicker {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.tool-card h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.tool-card p { margin: 0; font-size: 0.9rem; line-height: 1.55; color: var(--color-text-muted); }
.tool-card-cta {
  margin-top: 0.4rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text);
}

/* Responsive */
@media (max-width: 960px) {
  .tool-grid { grid-template-columns: minmax(0, 1fr); }
  .tool-panel--sticky { position: static; }
}
@media (max-width: 640px) {
  .tool-panel { padding: var(--space-4); }
  .tool-row,
  .tool-stats,
  .tool-gpu-cards,
  .tool-cards { grid-template-columns: minmax(0, 1fr); }
  .tool-kv { grid-template-columns: minmax(0, 1fr); gap: 0.15rem; }
  .tool-kv dd { margin-bottom: 0.4rem; }
  .tool-seg { display: grid; grid-auto-flow: row; grid-template-columns: repeat(2, 1fr); }
  .tool-seg button + button { border-left: 0; }
  .tool-seg button:nth-child(even) { border-left: 1px solid var(--color-divider); }
  .tool-seg button:nth-child(n+3) { border-top: 1px solid var(--color-divider); }
  .tool-cta { padding: var(--space-5); }
}
@media (prefers-reduced-motion: reduce) {
  .tool-card { transition: none; }
  .tool-card:hover { transform: none; }
}

/* Redirect checker */
.tool-trace-bar {
  display: flex;
  gap: var(--space-3);
  align-items: stretch;
}
.tool-trace-bar .tool-input { flex: 1; min-width: 0; }
.tool-trace-bar .landing-btn {
  height: var(--btn-h);
  flex: none;
  white-space: nowrap;
}
.tool-trace-bar .landing-btn:disabled { opacity: 0.55; cursor: not-allowed; }
.tool-hint.is-bad { color: #c23b3b; }
.tool-stats--four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.tool-chain {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin: 0;
}
.tool-chain-step {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-full);
  background: var(--color-surface-2);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
}
.tool-chain-step.is-ok { color: var(--color-success); }
.tool-chain-step.is-redirect { color: var(--color-primary); }
.tool-chain-step.is-bad { color: #c23b3b; }
.tool-chain-arrow { color: var(--color-text-muted); }
.tool-hops { display: grid; gap: var(--space-3); }
.tool-hop {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}
.tool-hop.is-ok { border-left: 3px solid var(--color-success); }
.tool-hop.is-redirect { border-left: 3px solid var(--color-primary); }
.tool-hop.is-bad { border-left: 3px solid #c23b3b; }
.tool-hop-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
}
.tool-hop-url {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  overflow-wrap: anywhere;
}
.tool-hop-meta {
  margin: 0;
  font-size: 0.78rem;
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
}
.tool-header-table td:first-child {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  white-space: nowrap;
}
.tool-header-table td:last-child {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  overflow-wrap: anywhere;
}
.tool-hop details > summary {
  cursor: pointer;
  font-size: 0.8125rem;
  font-weight: 600;
}
@media (max-width: 800px) {
  .tool-stats--four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .tool-trace-bar { flex-direction: column; }
  .tool-trace-bar .landing-btn { width: 100%; }
  .tool-stats--four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* DNS propagation checker */
.tool-hint-inline { font-weight: 400; color: var(--color-text-muted); }
.tool-hint.is-warning { color: #c23b3b; }
.tool-dns-bar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-3);
  align-items: end;
}
.tool-dns-bar .landing-btn { height: var(--btn-h); }
.tool-dns-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}
.tool-dns-summary p { margin: 0; flex: 1 1 16rem; font-size: 0.9rem; }
.tool-dns-overall {
  display: inline-flex;
  align-items: center;
  min-height: 1.7rem;
  padding: 0 0.7rem;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  background: color-mix(in srgb, var(--color-text) 8%, transparent);
}
.tool-dns-overall.is-propagated { color: var(--color-success); background: color-mix(in srgb, var(--color-success) 14%, transparent); }
.tool-dns-overall.is-partial { color: #9a6b12; background: color-mix(in srgb, #c08020 16%, transparent); }
.tool-dns-overall.is-unpropagated { color: #a33b3b; background: color-mix(in srgb, #c23b3b 12%, transparent); }
.tool-dns-group { display: grid; }
.tool-dns-group-title {
  margin: var(--space-4) 0 0;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.tool-dns-row {
  display: grid;
  grid-template-columns: minmax(9.5rem, 14rem) minmax(0, 1fr) auto auto;
  gap: 0.65rem 1rem;
  align-items: start;
  padding: 0.65rem 0;
  border-top: 1px solid var(--color-divider);
}
.tool-dns-where { display: flex; align-items: baseline; gap: 0.45rem; min-width: 0; }
.tool-dns-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--color-text-faint);
  transform: translateY(0.05rem);
  flex: none;
}
.tool-dns-row.is-match .tool-dns-dot,
.tool-dns-row.is-resolved .tool-dns-dot { background: var(--color-success); }
.tool-dns-row.is-mismatch .tool-dns-dot { background: #c08020; }
.tool-dns-row.is-empty .tool-dns-dot,
.tool-dns-row.is-error .tool-dns-dot { background: #c23b3b; }
.tool-dns-city { font-weight: 600; font-size: 0.875rem; }
.tool-dns-region { font-size: 0.75rem; color: var(--color-text-muted); }
.tool-dns-values { display: grid; gap: 0.15rem; min-width: 0; }
.tool-dns-values code,
.tool-dns-empty {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  overflow-wrap: anywhere;
}
.tool-dns-empty { color: var(--color-text-muted); }
.tool-dns-meta,
.tool-dns-pill { font-size: 0.75rem; color: var(--color-text-muted); white-space: nowrap; }
.tool-dns-pill { font-weight: 600; }
.tool-dns-row.is-match .tool-dns-pill,
.tool-dns-row.is-resolved .tool-dns-pill { color: var(--color-success); }
.tool-dns-row.is-mismatch .tool-dns-pill { color: #9a6b12; }
.tool-dns-row.is-empty .tool-dns-pill,
.tool-dns-row.is-error .tool-dns-pill { color: #a33b3b; }
.tool-dns-cta { margin: 0; font-size: 0.875rem; line-height: 1.5; }
.tool-dns-cta a { color: inherit; }
@media (max-width: 720px) {
  .tool-dns-bar { grid-template-columns: minmax(0, 1fr); }
  .tool-dns-row { grid-template-columns: minmax(0, 1fr) auto; }
  .tool-dns-values { grid-column: 1 / -1; }
}

/* Cron expression generator */
.tool-input--mono { font-family: var(--font-mono); font-size: 0.95rem; }
[data-tool="cron"] .tool-stat {
  padding: 0.3rem 0.75rem;
}
.tool-cron-reading {
  margin: 0;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.4;
  color: var(--color-text);
}
.tool-cron-expr {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  min-width: 0;
}
.tool-cron-expr code {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  line-height: 1.2;
  color: var(--color-text);
  overflow-wrap: anywhere;
}
.tool-field.is-active .tool-input {
  border-color: var(--color-text);
}
.tool-cron-fields {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.5rem;
  align-items: start;
}
.tool-cron-fields > .tool-field {
  grid-template-rows: 2.15rem var(--btn-h) var(--btn-h);
  align-content: start;
  gap: 0.35rem;
}
.tool-cron-fields .tool-label {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 0.05rem;
  min-height: 0;
  line-height: 1.15;
}
.tool-cron-fields .tool-cron-field-name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tool-cron-fields .tool-hint-inline {
  display: block;
  white-space: nowrap;
  font-size: 0.75rem;
  line-height: 1.15;
}
.tool-cron-fields .tool-input,
.tool-cron-fields .tool-select {
  min-width: 0;
}
.tool-cron-fields .tool-select {
  padding-left: 0.4rem;
  padding-right: 1.15rem;
  font-size: 0.75rem;
}
@media (max-width: 800px) {
  .tool-cron-fields { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}