:root {
  --color-background: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-soft: #f1f5f9;
  --color-text: #0f172a;
  --color-text-secondary: #475569;
  --color-text-light: #64748b;
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-primary-soft: #dbeafe;
  --color-link-hover: #075985;
  --color-teal: #33ccc5;
  --color-teal-dark: #088ec3;
  --color-reference-blue: #4771cb;
  --color-accent-start: #fa9d4d;
  --color-accent-end: #ff4f6b;
  --color-success: #15803d;
  --color-success-soft: #dcfce7;
  --color-warning: #b45309;
  --color-warning-soft: #fef3c7;
  --color-danger: #b91c1c;
  --color-danger-soft: #fee2e2;
  --color-border: #cbd5e1;
  --color-border-soft: #e2e8f0;
  --shadow-small: 0 4px 16px rgba(15, 23, 42, 0.06);
  --shadow-medium: 0 12px 32px rgba(15, 23, 42, 0.10);
  --shadow-large: 0 24px 60px rgba(15, 23, 42, 0.14);
  --radius-small: 10px;
  --radius-medium: 16px;
  --radius-large: 24px;
  --radius-pill: 999px;
  --container-width: 1180px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background: var(--color-background);
  color: var(--color-text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

img,
svg {
  display: block;
  max-width: 100%;
}

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

button,
select,
input[type="range"],
input[type="checkbox"],
summary {
  cursor: pointer;
}

a {
  color: var(--color-primary-dark);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--color-link-hover);
}

h1,
h2,
h3 {
  margin: 0 0 0.7em;
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.14;
}

h1 {
  font-size: clamp(2.35rem, 8vw, 4.4rem);
}

h2 {
  font-size: clamp(1.8rem, 5vw, 2.75rem);
}

h3 {
  font-size: 1.2rem;
}

p {
  margin: 0 0 1rem;
}

button:focus-visible,
a:focus-visible,
select:focus-visible,
input:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid #0f172a;
  outline-offset: 3px;
  box-shadow: 0 0 0 2px #ffffff;
}

[hidden] {
  display: none !important;
}

.container {
  width: min(calc(100% - 32px), var(--container-width));
  margin-inline: auto;
}

.narrow-container {
  width: min(calc(100% - 32px), 820px);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  inset-block-start: 8px;
  inset-inline-start: 8px;
  z-index: 1000;
  padding: 10px 16px;
  transform: translateY(-160%);
  border-radius: var(--radius-small);
  background: var(--color-text);
  color: #fff;
}

.skip-link:focus {
  transform: none;
}

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid transparent;
  background: rgba(248, 250, 252, 0.9);
  backdrop-filter: blur(16px);
  transition: box-shadow 180ms ease, border-color 180ms ease;
}

.site-header.is-scrolled {
  border-color: var(--color-border-soft);
  box-shadow: var(--shadow-small);
}

.header-inner {
  display: flex;
  min-height: 76px;
  align-items: center;
  gap: 20px;
}

.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  font-size: 1.06rem;
  font-weight: 850;
  text-decoration: none;
}

.brand img {
  width: 38px;
  height: 38px;
}

.main-nav {
  position: absolute;
  inset-block-start: 100%;
  inset-inline: 0;
  display: flex;
  gap: 2px;
  overflow-x: auto;
  padding: 8px 16px;
  border-bottom: 1px solid var(--color-border-soft);
  background: var(--color-surface);
  box-shadow: var(--shadow-small);
}

.js-ready .main-nav {
  display: none;
}

.js-ready .main-nav.is-open {
  position: absolute;
  inset-block-start: calc(100% + 6px);
  inset-inline: 16px;
  display: grid;
  gap: 4px;
  padding: 12px;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-medium);
  background: var(--color-surface);
  box-shadow: var(--shadow-medium);
}

.main-nav a {
  min-height: 44px;
  padding: 10px 13px;
  border-radius: var(--radius-pill);
  color: var(--color-text-secondary);
  font-size: 0.94rem;
  font-weight: 700;
  text-decoration: none;
}

.main-nav a:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-inline-start: auto;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-surface);
}

.js-ready .menu-toggle {
  display: inline-grid;
}

.menu-toggle span,
.menu-toggle::before,
.menu-toggle::after {
  width: 18px;
  height: 2px;
  border-radius: 4px;
  background: var(--color-text);
  content: "";
}

.menu-toggle {
  gap: 4px;
}

.header-cta {
  display: none;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-weight: 800;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
  transform: none;
}

.button-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-reference-blue));
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.25);
  color: #fff;
}

.button-primary:hover {
  color: #fff;
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.31);
}

.button-secondary {
  border-color: var(--color-border);
  background: var(--color-surface);
  color: var(--color-primary-dark);
}

.button-ghost {
  background: transparent;
  color: var(--color-text-secondary);
}

.button-small {
  min-height: 40px;
  padding: 8px 14px;
  font-size: 0.88rem;
}

.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 68px 0 58px;
}

.hero::before,
.hero::after {
  position: absolute;
  z-index: -1;
  border-radius: 48% 52% 56% 44%;
  content: "";
}

.hero::before {
  inset-block-start: -180px;
  inset-inline-end: -260px;
  width: 720px;
  height: 620px;
  transform: rotate(-12deg);
  background: linear-gradient(145deg, rgba(51, 204, 197, 0.22), rgba(71, 113, 203, 0.15));
}

.hero::after {
  inset-block-end: 18px;
  inset-inline-start: -60px;
  width: 160px;
  height: 160px;
  background: linear-gradient(145deg, rgba(250, 157, 77, 0.18), rgba(255, 79, 107, 0.16));
  filter: blur(1px);
}

.hero-grid {
  display: grid;
  align-items: center;
  gap: 44px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  color: var(--color-teal-dark);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 24px;
  height: 4px;
  border-radius: 8px;
  background: linear-gradient(90deg, var(--color-accent-start), var(--color-accent-end));
  content: "";
}

.hero h1 span,
.gradient-text {
  background: linear-gradient(100deg, var(--color-teal-dark), var(--color-primary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-copy > p {
  max-width: 650px;
  color: var(--color-text-secondary);
  font-size: clamp(1.05rem, 2.5vw, 1.22rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0;
}

.trust-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  color: var(--color-text-secondary);
  list-style: none;
}

.trust-list li {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 0.93rem;
  font-weight: 700;
}

.trust-list li::before {
  display: grid;
  width: 23px;
  height: 23px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  background: var(--color-success-soft);
  color: var(--color-success);
  content: "✓";
  font-size: 0.78rem;
}

.hero-visual {
  position: relative;
  max-width: 560px;
  margin-inline: auto;
}

.hero-visual::before {
  position: absolute;
  inset: 14% 6% -3% 12%;
  z-index: -1;
  border-radius: 38% 62% 46% 54%;
  background: linear-gradient(135deg, var(--color-teal), var(--color-reference-blue));
  opacity: 0.18;
  content: "";
}

.hero-visual img {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 24px 34px rgba(15, 23, 42, 0.13));
}

.ad-slot {
  display: grid;
  width: 100%;
  place-items: center;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-small);
  background: #f1f5f9;
  color: var(--color-text-light);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ad-slot-top,
.ad-slot-bottom {
  min-height: 90px;
  margin: 24px auto;
}

.ad-slot-sidebar {
  min-height: 250px;
}

.ad-slot-live {
  display: block;
  width: 300px;
  max-width: calc(100vw - 20px);
  min-height: 290px;
  margin-inline: auto;
  padding: 10px 0 12px;
  border: 0;
  background: var(--color-surface);
  box-shadow: 0 0 0 1px var(--color-border-soft);
  text-align: center;
  letter-spacing: normal;
  text-transform: none;
}

.ad-label {
  display: block;
  margin-bottom: 8px;
  color: var(--color-text-light);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  line-height: 1.4;
  text-transform: uppercase;
}

.adsterra-banner-300x250 {
  width: 300px;
  min-width: 300px;
  height: 250px;
  min-height: 250px;
  margin-inline: auto;
  overflow: hidden;
}

.tool-app-shell {
  min-height: 520px;
}

.tool-loading {
  display: grid;
  min-height: 320px;
  margin: 0;
  place-items: center;
  padding: 32px;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  text-align: center;
}

.tool-section {
  position: relative;
  padding: 36px 0 76px;
}

.tool-layout {
  display: grid;
  gap: 24px;
}

.tool-card {
  overflow: hidden;
  border: 1px solid var(--color-border-soft);
  border-radius: clamp(18px, 3vw, 30px);
  background: var(--color-surface);
  box-shadow: var(--shadow-large);
}

.tool-card-header {
  padding: 26px 22px 18px;
  text-align: center;
}

.tool-card-header h2 {
  margin-bottom: 8px;
  font-size: clamp(1.55rem, 4vw, 2.2rem);
}

.tool-card-header p {
  color: var(--color-text-secondary);
}

.tool-controls {
  padding: 0 18px 24px;
}

.mode-selector {
  display: grid;
  grid-template-columns: 1fr;
  gap: 7px;
  margin: 0 0 20px;
  padding: 6px;
  border: 0;
  border-radius: var(--radius-medium);
  background: var(--color-surface-soft);
}

.mode-selector legend {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.mode-option {
  position: relative;
}

.mode-option input {
  position: absolute;
  opacity: 0;
}

.mode-option span {
  display: flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 8px 13px;
  border-radius: 11px;
  color: var(--color-text-secondary);
  font-weight: 800;
  text-align: center;
}

.mode-option input:checked + span {
  background: var(--color-surface);
  box-shadow: var(--shadow-small);
  color: var(--color-primary-dark);
}

.mode-option input:focus-visible + span {
  outline: 3px solid rgba(37, 99, 235, 0.38);
}

.dropzone {
  display: grid;
  min-height: 300px;
  place-items: center;
  padding: 30px 18px;
  border: 2px dashed #9ab8e9;
  border-radius: var(--radius-large);
  background: linear-gradient(145deg, #f8fbff, #f3fffe);
  text-align: center;
  transition: border-color 160ms ease, transform 160ms ease, background 160ms ease;
}

.dropzone.is-dragover {
  transform: scale(1.01);
  border-color: var(--color-teal-dark);
  background: #e9fffd;
}

.upload-icon {
  display: grid;
  width: 66px;
  height: 66px;
  margin: 0 auto 14px;
  place-items: center;
  border-radius: 22px;
  background: linear-gradient(135deg, var(--color-teal), var(--color-primary));
  box-shadow: 0 12px 28px rgba(51, 204, 197, 0.28);
  color: #fff;
  font-size: 1.8rem;
}

.dropzone h3 {
  margin-bottom: 2px;
  font-size: 1.35rem;
}

.upload-or {
  color: var(--color-text-secondary);
}

.upload-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 18px 0 13px;
}

.upload-meta {
  margin: 4px 0;
  color: var(--color-text-light);
  font-size: 0.86rem;
}

.settings-grid {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}

.field {
  display: grid;
  align-content: start;
  gap: 7px;
}

.field > label,
.field-label {
  font-size: 0.91rem;
  font-weight: 800;
}

.field select,
.field input[type="number"] {
  width: 100%;
  min-height: 46px;
  padding: 9px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-surface);
}

.range-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.range-row input {
  width: 100%;
  accent-color: var(--color-primary);
}

.value-badge {
  min-width: 72px;
  padding: 4px 8px;
  border-radius: var(--radius-pill);
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  font-size: 0.82rem;
  font-weight: 800;
  text-align: center;
}

.field-help {
  margin: 0;
  color: var(--color-text-light);
  font-size: 0.82rem;
  line-height: 1.45;
}

.conversion-metadata-note {
  padding: 12px;
  border-radius: var(--radius-small);
  background: var(--color-primary-soft);
  color: var(--color-text);
}

.dropzone[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.65;
}

.advanced-settings {
  margin-top: 20px;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-medium);
}

.advanced-settings summary {
  min-height: 50px;
  padding: 13px 16px;
  font-weight: 850;
}

.advanced-content {
  display: grid;
  gap: 18px;
  padding: 6px 16px 18px;
  border-top: 1px solid var(--color-border-soft);
}

.check-field {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 9px;
}

.check-field input {
  width: 20px;
  height: 20px;
  margin: 3px 0 0;
  accent-color: var(--color-primary);
}

.summary-toolbar {
  display: grid;
  gap: 14px;
  margin-top: 20px;
  padding: 16px;
  border-radius: var(--radius-medium);
  background: var(--color-surface-soft);
}

.summary-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 15px;
  color: var(--color-text-secondary);
  font-size: 0.84rem;
  font-weight: 700;
}

.summary-actions {
  display: grid;
  gap: 8px;
}

.message-region {
  display: grid;
  gap: 8px;
  margin: 14px 0;
}

.notice {
  margin: 0;
  padding: 11px 13px;
  border-radius: var(--radius-small);
  font-size: 0.9rem;
}

.notice-info {
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

.notice-warning {
  background: var(--color-warning-soft);
  color: var(--color-warning);
}

.notice-error {
  background: var(--color-danger-soft);
  color: var(--color-danger);
}

.empty-state {
  padding: 28px 12px 10px;
  text-align: center;
}

.empty-state span {
  display: grid;
  width: 54px;
  height: 54px;
  margin: 0 auto 12px;
  place-items: center;
  border-radius: 18px;
  background: var(--color-surface-soft);
  color: var(--color-text-light);
  font-size: 1.4rem;
}

.empty-state h3 {
  margin-bottom: 4px;
}

.empty-state p {
  color: var(--color-text-light);
}

.file-list {
  display: grid;
  gap: 13px;
  padding: 4px 18px 22px;
}

.file-card {
  display: grid;
  gap: 14px;
  padding: 14px;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-medium);
  background: var(--color-surface);
}

.file-card.status-completed {
  border-color: #bbebc9;
}

.file-card.status-failed {
  border-color: #fecaca;
}

.file-thumb-wrap {
  overflow: hidden;
  width: 100%;
  min-height: 150px;
  border-radius: 12px;
  background: linear-gradient(90deg, #e2e8f0 25%, #f1f5f9 37%, #e2e8f0 63%);
  background-size: 400% 100%;
}

.is-loading .file-thumb-wrap {
  animation: skeleton 1.4s ease infinite;
}

.file-thumb {
  width: 100%;
  height: 150px;
  object-fit: cover;
}

.file-heading {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
}

.file-name {
  max-width: min(100%, 460px);
  margin: 0 0 2px;
  overflow-wrap: anywhere;
  font-size: 1rem;
}

.file-source,
.file-output,
.file-saving,
.file-progress-text {
  margin: 0;
  color: var(--color-text-light);
  font-size: 0.79rem;
}

.status-badge {
  flex: 0 0 auto;
  padding: 4px 8px;
  border-radius: var(--radius-pill);
  background: var(--color-surface-soft);
  color: var(--color-text-secondary);
  font-size: 0.72rem;
  font-weight: 850;
}

.status-completed .status-badge {
  background: var(--color-success-soft);
  color: var(--color-success);
}

.status-failed .status-badge {
  background: var(--color-danger-soft);
  color: var(--color-danger);
}

.file-progress {
  height: 7px;
  margin-top: 10px;
  overflow: hidden;
  border-radius: var(--radius-pill);
  background: var(--color-border-soft);
}

.file-progress-bar {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--color-teal), var(--color-primary));
  transition: width 180ms ease;
}

.file-result {
  display: grid;
  gap: 3px;
  margin-top: 9px;
}

.file-saving {
  color: var(--color-success);
  font-weight: 800;
}

.file-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 12px;
}

.tool-sidebar {
  display: grid;
  align-content: start;
  gap: 20px;
}

.privacy-note {
  padding: 18px;
  border: 1px solid #bcece7;
  border-radius: var(--radius-medium);
  background: #effffc;
}

.privacy-note h3 {
  margin-bottom: 5px;
  font-size: 1rem;
}

.privacy-note p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 0.87rem;
}

.section {
  padding: 76px 0;
}

.section-white {
  background: var(--color-surface);
}

.section-heading {
  max-width: 730px;
  margin: 0 auto 36px;
  text-align: center;
}

.section-heading .eyebrow {
  justify-content: center;
}

.section-heading p {
  color: var(--color-text-secondary);
  font-size: 1.04rem;
}

.feature-grid,
.use-case-grid,
.article-grid,
.format-grid,
.related-grid {
  display: grid;
  gap: 18px;
}

.feature-card,
.use-case-card,
.article-card,
.format-card,
.related-card {
  position: relative;
  overflow: hidden;
  padding: 24px;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  box-shadow: var(--shadow-small);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.feature-card:hover,
.use-case-card:hover,
.article-card:hover,
.related-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
}

.feature-number {
  position: absolute;
  inset-block-start: 12px;
  inset-inline-end: 18px;
  color: rgba(71, 113, 203, 0.13);
  font-size: 3.3rem;
  font-weight: 900;
  line-height: 1;
}

.feature-icon,
.use-case-icon {
  display: grid;
  width: 50px;
  height: 50px;
  margin-bottom: 18px;
  place-items: center;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(51, 204, 197, 0.18), rgba(37, 99, 235, 0.15));
  color: var(--color-primary-dark);
  font-size: 1.3rem;
  font-weight: 900;
}

.feature-card p,
.use-case-card p,
.format-card p,
.article-card p {
  color: var(--color-text-secondary);
}

.local-grid {
  display: grid;
  align-items: center;
  gap: 38px;
}

.local-illustration {
  max-width: 520px;
  margin-inline: auto;
}

.steps {
  display: grid;
  gap: 18px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.steps li {
  display: grid;
  grid-template-columns: 38px 1fr;
  align-items: start;
  gap: 12px;
}

.steps strong:first-child {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-teal), var(--color-primary));
  color: #fff;
}

.steps p {
  margin: 2px 0 0;
  color: var(--color-text-secondary);
}

.faq-list {
  display: grid;
  max-width: 880px;
  gap: 10px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-medium);
  background: var(--color-surface);
}

.faq-item summary {
  min-height: 54px;
  padding: 14px 48px 14px 16px;
  font-weight: 800;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  position: absolute;
  inset-inline-end: 18px;
  color: var(--color-primary);
  content: "+";
  font-size: 1.3rem;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item p {
  padding: 0 16px 16px;
  color: var(--color-text-secondary);
}

.article-card time,
.breadcrumbs,
.article-meta {
  color: var(--color-text-light);
  font-size: 0.84rem;
}

.article-card a,
.related-card a {
  font-weight: 800;
}

.page-hero {
  position: relative;
  overflow: hidden;
  padding: 70px 0 50px;
  background: linear-gradient(145deg, #effffc, #eff5ff);
}

.page-hero::after {
  position: absolute;
  inset-block-start: -100px;
  inset-inline-end: -100px;
  width: 320px;
  height: 260px;
  border-radius: 44% 56% 60% 40%;
  background: linear-gradient(135deg, rgba(51, 204, 197, 0.25), rgba(71, 113, 203, 0.2));
  content: "";
}

.page-hero .narrow-container,
.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero h1 {
  max-width: 820px;
  font-size: clamp(2.1rem, 6vw, 3.65rem);
}

.page-hero p {
  max-width: 720px;
  color: var(--color-text-secondary);
  font-size: 1.08rem;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 18px;
}

.prose {
  color: var(--color-text-secondary);
}

.prose h2,
.prose h3 {
  margin-top: 1.7em;
  color: var(--color-text);
}

.prose h2 {
  font-size: 1.8rem;
}

.prose h3 {
  font-size: 1.25rem;
}

.prose p,
.prose li {
  max-width: 75ch;
}

.prose li + li {
  margin-top: 7px;
}

.prose table {
  width: 100%;
  margin: 24px 0;
  border-collapse: collapse;
  color: var(--color-text);
}

.prose th,
.prose td {
  padding: 12px;
  border: 1px solid var(--color-border);
  text-align: start;
}

.prose th {
  background: var(--color-surface-soft);
}

.callout {
  margin: 28px 0;
  padding: 20px;
  border-inline-start: 5px solid var(--color-teal);
  border-radius: 0 var(--radius-medium) var(--radius-medium) 0;
  background: #effffc;
}

.toc {
  margin: 26px 0;
  padding: 20px 24px;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-medium);
  background: var(--color-surface);
}

.toc strong {
  display: block;
  margin-bottom: 8px;
  color: var(--color-text);
}

.legal-placeholder {
  padding: 3px 6px;
  border-radius: 5px;
  background: var(--color-warning-soft);
  color: var(--color-warning);
  font-weight: 700;
}

.contact-options {
  display: grid;
  gap: 15px;
  margin: 28px 0;
}

.contact-option {
  padding: 20px;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-medium);
  background: var(--color-surface);
}

.site-footer {
  padding: 56px 0 24px;
  background: #0b1830;
  color: #cbd5e1;
}

.footer-grid {
  display: grid;
  gap: 32px;
}

.footer-brand .brand {
  margin-bottom: 16px;
  color: #fff;
}

.footer-brand p {
  max-width: 400px;
  margin-bottom: 5px;
}

.footer-links h2 {
  margin-bottom: 12px;
  color: #fff;
  font-size: 1rem;
  letter-spacing: 0;
}

.footer-links ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-links a {
  color: #cbd5e1;
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--color-teal);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.13);
  color: #94a3b8;
  font-size: 0.82rem;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 500ms ease, transform 500ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@keyframes skeleton {
  0% { background-position: 100% 0; }
  100% { background-position: 0 0; }
}

@media (min-width: 560px) {
  .mode-selector {
    grid-template-columns: repeat(3, 1fr);
  }

  .settings-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .advanced-content {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .summary-actions {
    grid-template-columns: repeat(3, max-content);
  }

  .file-card {
    grid-template-columns: 112px 1fr;
  }

  .file-thumb-wrap {
    min-height: 84px;
  }

  .file-thumb {
    height: 84px;
  }

  .feature-grid,
  .use-case-grid,
  .article-grid,
  .format-grid,
  .related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-grid {
    grid-template-columns: 1.7fr 1fr 1fr;
  }
}

@media (min-width: 768px) {
  .hero {
    padding: 92px 0 78px;
  }

  .hero-grid,
  .local-grid {
    grid-template-columns: minmax(0, 1.03fr) minmax(330px, 0.97fr);
  }

  .trust-list {
    grid-template-columns: repeat(3, max-content);
  }

  .tool-card-header,
  .tool-controls {
    padding-inline: 28px;
  }

  .summary-toolbar {
    grid-template-columns: 1fr auto;
    align-items: center;
  }

  .file-list {
    padding-inline: 28px;
  }

  .file-card {
    padding: 16px;
  }

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

@media (min-width: 980px) {
  .js-ready .menu-toggle {
    display: none;
  }

  .main-nav,
  .js-ready .main-nav {
    position: static;
    display: flex;
    align-items: center;
    gap: 2px;
    overflow: visible;
    margin-inline-start: auto;
    padding: 0;
    border: 0;
    background: transparent;
    box-shadow: none;
  }

  .header-actions {
    margin-inline-start: 0;
  }

  .header-cta {
    display: inline-flex;
  }

  .tool-layout {
    grid-template-columns: minmax(0, 1fr) 300px;
  }

  .feature-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .article-grid,
  .format-grid,
  .related-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 559px) {
  .header-inner {
    gap: 8px;
  }

  .brand span {
    max-width: 170px;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .hero-actions .button,
  .upload-actions .button,
  .summary-actions .button,
  .file-actions .button {
    width: 100%;
  }

  .file-heading {
    display: grid;
  }

  .status-badge {
    justify-self: start;
  }

  .prose table {
    display: block;
    overflow-x: auto;
  }
}

@media (max-width: 340px) {
  .tool-section > .container {
    width: calc(100% - 16px);
  }

  .tool-sidebar {
    min-width: 0;
  }

  .ad-slot-live {
    width: 300px;
    max-width: 300px;
    padding-inline: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}