:root {
  --tool-accent: #00B8D4;
  --tool-accent-dark: #0099AA;
  --tool-bg: #0F1419;
  --tool-panel: #151B21;
  --tool-panel-raised: #1A222A;
  --tool-border: #2A343D;
  --tool-text: #FFFFFF;
  --tool-muted: #9EABB4;
  --tool-soft: #C1C1C1;
  --tool-pass: #64D391;
  --tool-warning: #F5BF55;
  --tool-error: #FF7676;
  --tool-radius: 8px;
  --tool-font: "Sen", system-ui, -apple-system, "Segoe UI", sans-serif;
  --tool-mono: ui-monospace, "SFMono-Regular", "Cascadia Code", "Roboto Mono", Menlo, Consolas, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.tool-page {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 12% 8%, rgba(0, 184, 212, .1), transparent 29rem),
    var(--tool-bg);
  color: var(--tool-text);
  font-family: var(--tool-font);
  font-size: 16px;
  line-height: 1.5;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
}

.tool-skip-link {
  position: fixed;
  top: auto;
  left: -10000px;
  z-index: 1000;
  visibility: hidden;
  padding: 10px 14px;
  border-radius: var(--tool-radius);
  background: var(--tool-accent);
  color: #0F1419;
  font-weight: 700;
}

.tool-skip-link:focus {
  top: 8px;
  left: 8px;
  visibility: visible;
}

.tool-site-nav {
  position: relative;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 14px max(24px, calc((100vw - 1200px) / 2));
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  background: rgba(15, 20, 25, .93);
  backdrop-filter: blur(18px);
}

.tool-site-logo {
  display: inline-flex;
  align-items: center;
  width: min(267px, 58vw);
  color: #C1C1C1;
}

.tool-site-logo svg {
  display: block;
  width: 100%;
  height: auto;
}

.tool-nav-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.tool-nav-link {
  color: var(--tool-muted);
  font-size: .9rem;
  font-weight: 700;
  text-decoration: none;
}

.tool-nav-link:hover {
  color: var(--tool-text);
}

.tool-nav-cta {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 16px;
  border-radius: var(--tool-radius);
  background: var(--tool-accent);
  color: #0F1419;
  font-size: .88rem;
  font-weight: 700;
  text-decoration: none;
}

.tool-main {
  width: min(1200px, calc(100% - 48px));
  margin: 0 auto;
  padding: 64px 0 96px;
}

.tool-breadcrumb {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 28px;
  color: var(--tool-muted);
  font-size: .86rem;
}

.tool-breadcrumb a {
  text-decoration: none;
}

.tool-breadcrumb a:hover {
  color: var(--tool-accent);
}

.tool-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: end;
  margin-bottom: 38px;
}

.tool-kicker {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 12px;
  color: var(--tool-accent);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.tool-kicker::before {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--tool-accent);
  content: "";
}

.tool-title {
  max-width: 820px;
  margin: 0;
  font-size: clamp(2.25rem, 5vw, 4.75rem);
  font-weight: 700;
  letter-spacing: -.055em;
  line-height: .98;
}

.tool-intro {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--tool-soft);
  font-size: clamp(1rem, 2vw, 1.16rem);
}

.tool-privacy {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 3px;
  padding: 9px 12px;
  border: 1px solid var(--tool-border);
  border-radius: var(--tool-radius);
  color: var(--tool-muted);
  font-size: .78rem;
  white-space: nowrap;
}

.tool-privacy svg {
  width: 15px;
  height: 15px;
  color: var(--tool-accent);
}

.tool-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, .92fr);
  overflow: hidden;
  border: 1px solid var(--tool-border);
  border-radius: var(--tool-radius);
  background: var(--tool-panel);
  box-shadow: 0 24px 80px rgba(0, 0, 0, .22);
}

.tool-pane {
  min-width: 0;
  padding: clamp(24px, 4vw, 42px);
}

.tool-pane + .tool-pane {
  border-left: 1px solid var(--tool-border);
  background:
    linear-gradient(rgba(0, 184, 212, .03), rgba(0, 184, 212, 0) 260px),
    var(--tool-panel-raised);
}

.tool-pane-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 26px;
}

.tool-pane-title {
  margin: 0;
  font-size: 1.15rem;
  letter-spacing: -.02em;
}

.tool-step {
  color: var(--tool-accent);
  font-family: var(--tool-mono);
  font-size: .72rem;
  letter-spacing: .08em;
}

.tool-form {
  display: grid;
  gap: 22px;
}

.tool-field {
  display: grid;
  gap: 8px;
}

.tool-field-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.tool-field label,
.tool-label {
  color: var(--tool-soft);
  font-size: .82rem;
  font-weight: 700;
}

.tool-required {
  color: var(--tool-accent);
}

.tool-help {
  margin: 0;
  color: var(--tool-muted);
  font-size: .75rem;
}

.tool-input,
.tool-select,
.tool-textarea {
  width: 100%;
  min-height: 48px;
  padding: 11px 13px;
  border: 1px solid var(--tool-border);
  border-radius: var(--tool-radius);
  outline: none;
  background: #10161B;
  color: var(--tool-text);
  transition: border-color .16s, box-shadow .16s;
}

.tool-input::placeholder {
  color: #71808A;
}

.tool-input:hover,
.tool-select:hover,
.tool-textarea:hover {
  border-color: #41505A;
}

.tool-input:focus,
.tool-select:focus,
.tool-textarea:focus {
  border-color: var(--tool-accent);
  box-shadow: 0 0 0 3px rgba(0, 184, 212, .15);
}

.tool-textarea {
  min-height: 118px;
  resize: vertical;
}

.tool-input[aria-invalid="true"] {
  border-color: var(--tool-error);
}

.tool-field-error {
  min-height: 1em;
  margin: 0;
  color: var(--tool-error);
  font-size: .75rem;
}

.tool-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tool-chip {
  min-height: 35px;
  padding: 7px 11px;
  border: 1px solid var(--tool-border);
  border-radius: var(--tool-radius);
  background: transparent;
  color: var(--tool-muted);
  cursor: pointer;
  font-size: .76rem;
  font-weight: 700;
}

.tool-chip:hover,
.tool-chip[aria-pressed="true"] {
  border-color: rgba(0, 184, 212, .65);
  background: rgba(0, 184, 212, .08);
  color: var(--tool-accent);
}

.tool-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--tool-muted);
  cursor: pointer;
  font-size: .8rem;
}

.tool-check input {
  width: 16px;
  height: 16px;
  margin-top: 2px;
  accent-color: var(--tool-accent);
}

.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 2px;
}

.tool-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 10px 17px;
  border: 1px solid var(--tool-border);
  border-radius: var(--tool-radius);
  background: transparent;
  color: var(--tool-text);
  cursor: pointer;
  font-weight: 700;
  transition: transform .15s, border-color .15s, background .15s;
}

.tool-button:hover:not(:disabled) {
  border-color: #52626D;
  transform: translateY(-1px);
}

.tool-button:focus-visible,
.tool-chip:focus-visible,
.tool-nav-link:focus-visible,
.tool-nav-cta:focus-visible,
.tool-breadcrumb a:focus-visible {
  outline: 3px solid rgba(0, 184, 212, .45);
  outline-offset: 3px;
}

.tool-button-primary {
  border-color: var(--tool-accent);
  background: var(--tool-accent);
  color: #0F1419;
}

.tool-button-primary:hover:not(:disabled) {
  border-color: var(--tool-accent-dark);
  background: var(--tool-accent-dark);
}

.tool-button:disabled {
  cursor: not-allowed;
  opacity: .5;
}

.tool-button svg {
  width: 17px;
  height: 17px;
}

.tool-output {
  display: grid;
  gap: 22px;
  min-height: 100%;
  align-content: start;
}

.tool-empty {
  display: grid;
  place-items: center;
  min-height: 360px;
  padding: 32px;
  border: 1px dashed #35414B;
  border-radius: var(--tool-radius);
  color: var(--tool-muted);
  text-align: center;
}

.tool-empty-icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border: 1px solid rgba(0, 184, 212, .25);
  border-radius: var(--tool-radius);
  background: rgba(0, 184, 212, .08);
  color: var(--tool-accent);
}

.tool-empty-icon svg {
  width: 24px;
  height: 24px;
}

.tool-empty h2 {
  margin: 0 0 7px;
  color: var(--tool-text);
  font-size: 1rem;
}

.tool-empty p {
  max-width: 310px;
  margin: 0;
  font-size: .84rem;
}

.tool-output-card {
  overflow: hidden;
  border: 1px solid var(--tool-border);
  border-radius: var(--tool-radius);
  background: #10161B;
}

.tool-output-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 15px;
  border-bottom: 1px solid var(--tool-border);
  color: var(--tool-muted);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.tool-output-value {
  margin: 0;
  padding: 17px;
  color: var(--tool-text);
  font-family: var(--tool-mono);
  font-size: .82rem;
  line-height: 1.7;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.tool-param-list {
  display: grid;
  margin: 0;
}

.tool-param {
  display: grid;
  grid-template-columns: minmax(110px, .65fr) minmax(0, 1.35fr);
  gap: 16px;
  padding: 11px 15px;
  border-top: 1px solid var(--tool-border);
  font-size: .78rem;
}

.tool-param:first-child {
  border-top: 0;
}

.tool-param dt {
  color: var(--tool-muted);
  font-family: var(--tool-mono);
}

.tool-param dd {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
}

.tool-status {
  min-height: 20px;
  margin: 0;
  color: var(--tool-muted);
  font-size: .78rem;
}

.tool-status[data-tone="success"] {
  color: var(--tool-pass);
}

.tool-status[data-tone="error"] {
  color: var(--tool-error);
}

.tool-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--tool-border);
  border-radius: var(--tool-radius);
  background: var(--tool-border);
}

.tool-stat {
  min-width: 0;
  padding: 17px;
  background: #10161B;
}

.tool-stat-label {
  margin-bottom: 6px;
  color: var(--tool-muted);
  font-size: .68rem;
  letter-spacing: .07em;
  text-transform: uppercase;
}

.tool-stat-value {
  display: block;
  min-width: 0;
  overflow: hidden;
  color: var(--tool-text);
  font-family: var(--tool-mono);
  font-size: .88rem;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tool-stat-value[data-tone="success"] {
  color: var(--tool-pass);
}

.tool-stat-value[data-tone="warning"] {
  color: var(--tool-warning);
}

.tool-stat-value[data-tone="error"] {
  color: var(--tool-error);
}

.tool-tabs {
  display: flex;
  gap: 4px;
  padding: 5px;
  overflow-x: auto;
  border: 1px solid var(--tool-border);
  border-radius: var(--tool-radius);
  background: #10161B;
}

.tool-tab {
  min-height: 38px;
  padding: 8px 13px;
  border: 0;
  border-radius: 5px;
  background: transparent;
  color: var(--tool-muted);
  cursor: pointer;
  font-size: .78rem;
  font-weight: 700;
  white-space: nowrap;
}

.tool-tab[aria-selected="true"] {
  background: var(--tool-panel-raised);
  color: var(--tool-accent);
}

.tool-tab-panel[hidden] {
  display: none;
}

.tool-section {
  overflow: hidden;
  border: 1px solid var(--tool-border);
  border-radius: var(--tool-radius);
  background: #10161B;
}

.tool-section-title {
  margin: 0;
  padding: 13px 16px;
  border-bottom: 1px solid var(--tool-border);
  color: var(--tool-soft);
  font-size: .82rem;
}

.tool-seo-field {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr);
  gap: 18px;
  padding: 13px 16px;
  border-top: 1px solid var(--tool-border);
  font-size: .8rem;
}

.tool-seo-field:first-of-type {
  border-top: 0;
}

.tool-seo-field dt {
  color: var(--tool-muted);
}

.tool-seo-field dd {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
}

.tool-check-list {
  display: grid;
  margin: 0;
}

.tool-signal {
  position: relative;
  display: grid;
  grid-template-columns: 16px minmax(110px, .48fr) minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 13px 16px;
  border-top: 1px solid var(--tool-border);
  font-size: .78rem;
}

.tool-signal:first-child {
  border-top: 0;
}

.tool-signal-mark {
  width: 9px;
  height: 9px;
  margin-top: 5px;
  border-radius: 50%;
  background: var(--tool-muted);
}

.tool-signal[data-tone="pass"] .tool-signal-mark {
  background: var(--tool-pass);
  box-shadow: 0 0 0 4px rgba(100, 211, 145, .1);
}

.tool-signal[data-tone="warning"] .tool-signal-mark {
  background: var(--tool-warning);
  box-shadow: 0 0 0 4px rgba(245, 191, 85, .1);
}

.tool-signal[data-tone="error"] .tool-signal-mark {
  background: var(--tool-error);
  box-shadow: 0 0 0 4px rgba(255, 118, 118, .1);
}

.tool-signal strong {
  font-size: .78rem;
}

.tool-signal span:last-child {
  color: var(--tool-muted);
}

.tool-chain {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tool-chain li {
  position: relative;
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 13px;
  padding: 14px 16px;
  border-top: 1px solid var(--tool-border);
  font-family: var(--tool-mono);
  font-size: .75rem;
}

.tool-chain li:first-child {
  border-top: 0;
}

.tool-chain-status {
  color: var(--tool-warning);
  font-weight: 700;
}

.tool-chain-url {
  overflow-wrap: anywhere;
}

.tool-header-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--tool-mono);
  font-size: .72rem;
  table-layout: fixed;
}

.tool-header-table th,
.tool-header-table td {
  padding: 11px 14px;
  border-top: 1px solid var(--tool-border);
  text-align: left;
  vertical-align: top;
  overflow-wrap: anywhere;
}

.tool-header-table tr:first-child th,
.tool-header-table tr:first-child td {
  border-top: 0;
}

.tool-header-table th {
  width: 34%;
  color: var(--tool-muted);
  font-weight: 400;
}

.tool-callout {
  padding: 13px 15px;
  border-left: 2px solid var(--tool-accent);
  background: rgba(0, 184, 212, .06);
  color: var(--tool-muted);
  font-size: .75rem;
}

.tool-dropzone {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 190px;
  padding: 28px;
  border: 1px dashed #41505A;
  border-radius: var(--tool-radius);
  background: #10161B;
  color: var(--tool-muted);
  cursor: pointer;
  text-align: center;
  transition: border-color .16s, background .16s;
}

.tool-dropzone:hover,
.tool-dropzone[data-dragging="true"] {
  border-color: var(--tool-accent);
  background: rgba(0, 184, 212, .05);
}

.tool-dropzone:focus-within {
  outline: 3px solid rgba(0, 184, 212, .25);
  outline-offset: 2px;
}

.tool-dropzone input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.tool-dropzone-icon {
  display: grid;
  place-items: center;
  width: 50px;
  height: 50px;
  margin: 0 auto 13px;
  border: 1px solid rgba(0, 184, 212, .28);
  border-radius: var(--tool-radius);
  background: rgba(0, 184, 212, .08);
  color: var(--tool-accent);
}

.tool-dropzone-icon svg {
  width: 23px;
  height: 23px;
}

.tool-dropzone strong {
  display: block;
  margin-bottom: 4px;
  color: var(--tool-text);
}

.tool-dropzone span {
  font-size: .78rem;
}

.tool-range-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 62px;
  gap: 12px;
  align-items: center;
}

.tool-range {
  width: 100%;
  accent-color: var(--tool-accent);
}

.tool-range-value {
  color: var(--tool-soft);
  font-family: var(--tool-mono);
  font-size: .78rem;
  text-align: right;
}

.tool-preview {
  display: grid;
  place-items: center;
  min-height: 330px;
  overflow: hidden;
  border: 1px solid var(--tool-border);
  border-radius: var(--tool-radius);
  background:
    linear-gradient(45deg, #10161B 25%, transparent 25%),
    linear-gradient(-45deg, #10161B 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #10161B 75%),
    linear-gradient(-45deg, transparent 75%, #10161B 75%),
    #172028;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0;
  background-size: 16px 16px;
}

.tool-preview img {
  display: block;
  max-width: 100%;
  max-height: 520px;
  object-fit: contain;
}

.tool-file-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--tool-border);
  border-radius: var(--tool-radius);
  background: var(--tool-border);
}

.tool-file-stat {
  min-width: 0;
  padding: 13px;
  background: #10161B;
}

.tool-file-stat span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tool-file-stat-label {
  margin-bottom: 4px;
  color: var(--tool-muted);
  font-size: .65rem;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.tool-file-stat-value {
  color: var(--tool-soft);
  font-family: var(--tool-mono);
  font-size: .74rem;
}

.tool-result-list {
  display: grid;
  gap: 10px;
}

.tool-result-group {
  overflow: hidden;
  border: 1px solid var(--tool-border);
  border-radius: var(--tool-radius);
  background: #10161B;
}

.tool-result-group-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 15px;
  border-bottom: 1px solid var(--tool-border);
}

.tool-result-group-header h3 {
  min-width: 0;
  margin: 0;
  font-size: .86rem;
  overflow-wrap: anywhere;
}

.tool-result-body {
  display: grid;
}

.tool-result-row {
  display: grid;
  grid-template-columns: 122px minmax(0, 1fr);
  gap: 14px;
  padding: 10px 15px;
  border-top: 1px solid var(--tool-border);
  font-size: .74rem;
}

.tool-result-row:first-child {
  border-top: 0;
}

.tool-result-key {
  color: var(--tool-muted);
}

.tool-result-value {
  min-width: 0;
  color: var(--tool-soft);
  overflow-wrap: anywhere;
}

.tool-badge {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 3px 8px;
  border: 1px solid var(--tool-border);
  border-radius: 999px;
  color: var(--tool-muted);
  font-family: var(--tool-mono);
  font-size: .65rem;
  white-space: nowrap;
}

.tool-badge[data-tone="success"] {
  border-color: rgba(100, 211, 145, .35);
  color: var(--tool-pass);
}

.tool-badge[data-tone="warning"] {
  border-color: rgba(245, 191, 85, .35);
  color: var(--tool-warning);
}

.tool-badge[data-tone="error"] {
  border-color: rgba(255, 118, 118, .35);
  color: var(--tool-error);
}

.tool-issues {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tool-issue {
  position: relative;
  padding-left: 19px;
  color: var(--tool-muted);
  font-size: .75rem;
}

.tool-issue::before {
  position: absolute;
  top: .55em;
  left: 1px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--tool-muted);
  content: "";
}

.tool-issue[data-tone="error"]::before {
  background: var(--tool-error);
}

.tool-issue[data-tone="warning"]::before {
  background: var(--tool-warning);
}

.tool-issue[data-tone="success"]::before {
  background: var(--tool-pass);
}

.tool-code {
  max-height: 300px;
  overflow: auto;
  margin: 0;
  padding: 15px;
  border: 1px solid var(--tool-border);
  border-radius: var(--tool-radius);
  background: #10161B;
  color: var(--tool-soft);
  font-family: var(--tool-mono);
  font-size: .72rem;
  line-height: 1.7;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.tool-serp-shell {
  overflow: hidden;
  border: 1px solid var(--tool-border);
  border-radius: var(--tool-radius);
  background: #FFFFFF;
  color: #202124;
}

.tool-serp-bar {
  display: flex;
  gap: 7px;
  padding: 13px 15px;
  border-bottom: 1px solid #E8EAED;
  background: #F8F9FA;
}

.tool-serp-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #C5C8CC;
}

.tool-serp {
  min-height: 224px;
  padding: 28px 24px 34px;
  font-family: Arial, sans-serif;
}

.tool-serp-site {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 6px;
  color: #202124;
  font-size: 14px;
}

.tool-serp-favicon {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #F1F3F4;
  color: #5F6368;
  font-size: 12px;
  font-weight: 700;
}

.tool-serp-url {
  display: block;
  max-width: 520px;
  overflow: hidden;
  color: #4D5156;
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tool-serp-title {
  display: block;
  max-width: 580px;
  margin: 0 0 5px;
  color: #1A0DAB;
  font-size: 20px;
  font-weight: 400;
  line-height: 1.3;
}

.tool-serp-description {
  max-width: 600px;
  margin: 0;
  color: #4D5156;
  font-size: 14px;
  line-height: 1.58;
}

.tool-meter {
  overflow: hidden;
  height: 5px;
  border-radius: 999px;
  background: var(--tool-border);
}

.tool-meter span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: var(--tool-accent);
  transition: width .2s;
}

.tool-meter span[data-tone="warning"] {
  background: var(--tool-warning);
}

.tool-meter span[data-tone="error"] {
  background: var(--tool-error);
}

.tool-loading {
  display: grid;
  place-items: center;
  min-height: 380px;
  text-align: center;
}

.tool-spinner {
  width: 35px;
  height: 35px;
  margin: 0 auto 16px;
  border: 2px solid var(--tool-border);
  border-top-color: var(--tool-accent);
  border-radius: 50%;
  animation: tool-spin .8s linear infinite;
}

@keyframes tool-spin {
  to { transform: rotate(360deg); }
}

.tool-content {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  margin-top: 72px;
}

.tool-content h2 {
  margin: 0 0 14px;
  font-size: 1.4rem;
  letter-spacing: -.03em;
}

.tool-content p,
.tool-content li {
  color: var(--tool-muted);
  font-size: .9rem;
}

.tool-content ol,
.tool-content ul {
  margin: 0;
  padding-left: 20px;
}

.tool-content li + li {
  margin-top: 8px;
}

.tool-site-footer {
  padding: 34px max(24px, calc((100vw - 1200px) / 2));
  border-top: 1px solid rgba(255, 255, 255, .08);
  color: var(--tool-muted);
  font-size: .75rem;
}

.tool-site-footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

.tool-site-footer a {
  text-decoration: none;
}

.tool-site-footer a:hover {
  color: var(--tool-text);
}

[hidden] {
  display: none !important;
}

@media (max-width: 900px) {
  .tool-main {
    width: min(100% - 32px, 760px);
    padding-top: 42px;
  }

  .tool-hero {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .tool-privacy {
    justify-self: start;
  }

  .tool-workspace {
    grid-template-columns: 1fr;
  }

  .tool-pane + .tool-pane {
    border-top: 1px solid var(--tool-border);
    border-left: 0;
  }

  .tool-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .tool-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 620px) {
  .tool-site-nav {
    min-height: 62px;
    padding: 12px 16px;
  }

  .tool-site-logo {
    width: 180px;
  }

  .tool-nav-link {
    display: none;
  }

  .tool-nav-cta {
    min-height: 36px;
    padding: 7px 12px;
    font-size: .75rem;
  }

  .tool-main {
    width: min(100% - 24px, 760px);
    padding: 34px 0 70px;
  }

  .tool-title {
    font-size: clamp(2.1rem, 13vw, 3.4rem);
  }

  .tool-field-row {
    grid-template-columns: 1fr;
  }

  .tool-pane {
    padding: 22px 18px;
  }

  .tool-stats {
    grid-template-columns: 1fr 1fr;
  }

  .tool-stat {
    padding: 13px;
  }

  .tool-seo-field,
  .tool-signal {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .tool-signal {
    padding-left: 38px;
  }

  .tool-signal-mark {
    position: absolute;
    margin-left: -22px;
  }

  .tool-site-footer-inner {
    flex-direction: column;
  }

  .tool-file-stats {
    grid-template-columns: 1fr;
  }

  .tool-result-row {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  .tool-serp {
    padding: 22px 17px 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}