:root {
  --page-bg: #f8fafc;
  --surface: #ffffff;
  --surface-muted: #f1f5f9;
  --surface-blue: #eff6ff;
  --ink: #0f172a;
  --muted: #475569;
  --muted-light: #64748b;
  --border: #cbd5e1;
  --border-strong: #94a3b8;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-soft: #dbeafe;
  --accent: #15803d;
  --accent-soft: #dcfce7;
  --warning: #a16207;
  --warning-soft: #fef3c7;
  --danger: #b91c1c;
  --danger-soft: #fee2e2;
  --shadow-sm: 0 4px 14px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 18px 42px rgba(15, 23, 42, 0.09);
  --shadow-focus: 0 0 0 4px rgba(37, 99, 235, 0.18);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--page-bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

body::selection {
  background: var(--primary-soft);
}

a {
  color: inherit;
}

button,
input {
  font: inherit;
}

button,
a,
summary,
[role="button"] {
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

button:focus-visible,
a:focus-visible,
summary:focus-visible,
input:focus-visible,
[role="button"]:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
  box-shadow: var(--shadow-focus);
}

[hidden] {
  display: none !important;
}

.wrap {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

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

.skip-link {
  position: fixed;
  top: 10px;
  left: 12px;
  z-index: 100;
  transform: translateY(-180%);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--ink);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid rgba(203, 213, 225, 0.82);
  background: rgba(248, 250, 252, 0.92);
  backdrop-filter: blur(16px);
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 78px;
}

.brand,
.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  text-decoration: none;
}

.brand {
  flex: 0 0 auto;
}

.brand-mark {
  display: block;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
}

.brand-copy {
  display: block;
  font-size: 1.08rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.1;
}

.brand-copy small {
  display: block;
  margin-top: 4px;
  color: var(--muted-light);
  font-family: var(--mono);
  font-size: 0.63rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  min-width: 0;
}

.mobile-menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease, box-shadow 180ms ease;
}

.mobile-menu-toggle:hover,
.mobile-menu-toggle[aria-expanded="true"] {
  border-color: var(--border-strong);
  background: var(--surface-blue);
  color: var(--primary-hover);
  box-shadow: var(--shadow-sm);
}

.mobile-menu-toggle svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-width: 2;
}

.menu-icon-line {
  transform-origin: 12px 12px;
  transition: transform 180ms ease, opacity 180ms ease;
}

.mobile-menu-toggle[aria-expanded="true"] .menu-icon-line-top {
  transform: translateY(5px) rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] .menu-icon-line-middle {
  opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .menu-icon-line-bottom {
  transform: translateY(-5px) rotate(-45deg);
}

.primary-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  min-width: 0;
}

.primary-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 180ms ease, color 180ms ease;
}

.primary-nav a:hover {
  background: var(--surface-blue);
  color: var(--primary-hover);
}

.primary-nav .nav-privacy {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink);
}

.primary-nav .nav-privacy:hover {
  border-color: var(--primary);
  background: var(--primary-soft);
}

.language-menu {
  position: relative;
  flex: 0 0 auto;
  z-index: 50;
}

.language-menu summary {
  appearance: none;
  -webkit-appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 118px;
  min-height: 44px;
  padding: 9px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-sm);
  color: var(--muted);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 800;
  line-height: 1;
  list-style: none;
  white-space: nowrap;
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

.language-menu summary::marker {
  content: "";
  font-size: 0;
}

.language-menu summary::-webkit-details-marker {
  display: none;
}

.language-menu summary::after {
  width: 0;
  height: 0;
  border-top: 5px solid currentColor;
  border-right: 4px solid transparent;
  border-bottom: 0;
  border-left: 4px solid transparent;
  content: "";
  flex: 0 0 auto;
  opacity: 0.58;
  transition: transform 180ms ease;
}

.language-menu summary:hover {
  transform: translateY(-1px);
  border-color: var(--border-strong);
  background: var(--surface);
  box-shadow: var(--shadow-md);
}

.language-menu[open] summary {
  border-color: var(--border-strong);
  background: var(--surface);
  box-shadow: var(--shadow-md);
}

.language-menu[open] summary::after {
  transform: rotate(180deg);
}

.language-menu summary svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: var(--primary);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
  transition: transform 180ms ease, stroke 180ms ease;
}

.language-menu summary:hover svg,
.language-menu[open] summary svg {
  stroke: var(--primary-hover);
  transform: rotate(8deg);
}

.language-current {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}

.language-current-short {
  display: none;
}

.language-options {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 60;
  display: grid;
  gap: 3px;
  min-width: 160px;
  max-width: calc(100vw - 28px);
  padding: 7px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow-md);
}

.language-option,
.language-options a {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  width: 100%;
  min-height: 40px;
  padding: 9px 12px;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 150ms ease, color 150ms ease;
}

.language-option:hover,
.language-options a:hover {
  background: var(--primary-soft);
  color: var(--primary-hover);
  text-decoration: none;
}

.language-option.is-current {
  background: var(--primary-soft);
  color: var(--primary-hover);
  cursor: default;
}

.hero-section {
  padding: 38px 0 16px;
}

.hero-inner {
  max-width: 820px;
  text-align: center;
}

.eyebrow,
.section-label,
.panel-kicker {
  margin: 0;
  color: var(--primary-hover);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  line-height: 1.3;
  text-transform: uppercase;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 12px;
  border: 1px solid #bfdbfe;
  border-radius: 999px;
  background: var(--surface-blue);
}

.eyebrow::before {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(21, 128, 61, 0.12);
  content: "";
}

.hero-section h1 {
  max-width: 760px;
  margin: 12px auto 10px;
  color: var(--ink);
  font-size: clamp(2.8rem, 6.1vw, 4.8rem);
  font-weight: 800;
  letter-spacing: -0.065em;
  line-height: 1;
}

.hero-lead {
  max-width: 700px;
  margin: 0 auto;
  color: var(--muted);
  font-size: clamp(1rem, 1.8vw, 1.17rem);
  line-height: 1.65;
}

.trust-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.trust-list li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 6px 11px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 700;
}

.trust-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
}

.tool-section {
  padding: 2px 0 44px;
}

.section-intro {
  max-width: 760px;
  margin: 0 auto 28px;
  text-align: center;
}

.section-intro-left {
  margin-left: 0;
  text-align: left;
}

.section-intro h2 {
  margin: 8px 0 10px;
  color: var(--ink);
  font-size: clamp(1.8rem, 3.7vw, 2.7rem);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 1.1;
}

.section-intro p:not(.section-label) {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.tool-card {
  display: grid;
  max-width: 980px;
  margin: 0 auto;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--surface);
  box-shadow: var(--shadow-md);
}

.tool-panel {
  min-width: 0;
  padding: clamp(16px, 2vw, 20px);
}

.input-panel {
  border-right: 1px solid var(--border);
}

.preview-panel {
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}

.panel-heading {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 10px;
}

.step-index,
.detail-index,
.step-number {
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 9px;
  font-family: var(--mono);
  font-weight: 800;
}

.step-index {
  width: 36px;
  height: 36px;
  background: var(--primary-soft);
  color: var(--primary-hover);
  font-size: 0.74rem;
}

.step-index-accent {
  background: var(--accent-soft);
  color: var(--accent);
}

.panel-kicker {
  margin-bottom: 3px;
  color: var(--muted-light);
  font-size: 0.64rem;
}

.panel-heading h3 {
  margin: 0;
  color: var(--ink);
  font-size: 1.28rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.drop-zone {
  position: relative;
  display: flex;
  min-height: 168px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 12px;
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  background: var(--surface-muted);
  text-align: center;
  cursor: pointer;
  transition: border-color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.drop-zone:hover,
.drop-zone.is-dragover {
  border-color: var(--primary);
  background: var(--surface-blue);
}

.drop-zone.is-dragover {
  transform: translateY(-2px);
}

.drop-icon,
.archive-icon,
.output-icon {
  display: grid;
  place-items: center;
  color: var(--primary);
}

.drop-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.drop-icon svg {
  width: 32px;
  height: 32px;
}

.drop-title {
  margin: 3px 0 0;
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.025em;
}

.drop-help {
  max-width: 260px;
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.5;
}

.primary-button,
.secondary-button,
.text-button,
.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 46px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 800;
  text-decoration: none;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease, opacity 180ms ease;
}

.primary-button,
.secondary-button {
  padding: 10px 16px;
}

.primary-button svg,
.secondary-button svg,
.text-button svg,
.icon-button svg,
.local-processing-note svg,
.file-rules svg,
.footer-email svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.secondary-button {
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--ink);
}

.secondary-button:hover {
  border-color: var(--primary);
  background: var(--primary-soft);
  color: var(--primary-hover);
}

.primary-button {
  border: 1px solid var(--primary);
  background: var(--primary);
  color: #fff;
}

.primary-button:hover {
  border-color: var(--primary-hover);
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.primary-button:disabled,
.secondary-button:disabled,
.icon-button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
  transform: none;
}

.drop-zone .secondary-button {
  margin-top: 4px;
}

.selected-file {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
  margin-top: 14px;
  padding: 11px 12px;
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-md);
  background: var(--surface-blue);
}

.file-type-mark {
  display: grid;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 800;
}

.selected-file-copy {
  display: flex;
  min-width: 0;
  flex: 1 1 auto;
  flex-direction: column;
  gap: 2px;
}

.selected-file-copy strong,
.selected-file-copy span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.selected-file-copy strong {
  color: var(--ink);
  font-size: 0.9rem;
}

.selected-file-copy span {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
}

.icon-button {
  width: 44px;
  min-width: 44px;
  padding: 0;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
}

.icon-button:hover {
  border-color: var(--danger);
  background: var(--danger-soft);
  color: var(--danger);
}

.file-rules {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 12px;
  margin: 10px 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 700;
}

.file-rules span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.file-rules svg {
  width: 15px;
  height: 15px;
  color: var(--primary);
}

.convert-button {
  width: 100%;
  min-height: 48px;
  font-size: 1rem;
}

.processing-status,
.message {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 14px;
  padding: 12px 13px;
  border-radius: var(--radius-md);
}

.processing-status {
  border: 1px solid #bfdbfe;
  background: var(--surface-blue);
  color: var(--primary-hover);
}

.processing-status > div,
.message > div {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.processing-status strong,
.message strong {
  font-size: 0.86rem;
  line-height: 1.35;
}

.processing-status span:not(.spinner),
.message p {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.5;
}

.spinner {
  width: 19px;
  height: 19px;
  flex: 0 0 auto;
  margin-top: 1px;
  border: 2px solid rgba(37, 99, 235, 0.2);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 800ms linear infinite;
}

.message {
  border: 1px solid #fecaca;
  background: var(--danger-soft);
  color: var(--danger);
}

.message > svg {
  width: 19px;
  height: 19px;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.message p {
  color: #7f1d1d;
}

.text-button {
  min-height: 40px;
  padding: 6px 0;
  border: 0;
  background: transparent;
  color: var(--primary-hover);
  font-size: 0.8rem;
}

.text-button:hover {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.local-processing-note {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.5;
}

.local-processing-note svg {
  width: 17px;
  height: 17px;
  flex: 0 0 auto;
  margin-top: 2px;
  color: var(--accent);
}

.preview-state {
  min-height: 200px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.preview-status-row,
.preview-footer-line,
.metadata-footer {
  display: flex;
  align-items: center;
  gap: 8px;
}

.preview-status-row {
  min-height: 28px;
  color: var(--ink);
  font-size: 0.8rem;
}

.status-dot {
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  border-radius: 50%;
}

.status-dot-neutral {
  background: var(--border-strong);
}

.status-dot-success {
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.status-badge,
.support-status {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--surface-muted);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.64rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.preview-status-row .status-badge {
  margin-left: auto;
}

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

.archive-summary {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 10px 0 8px;
}

.archive-icon,
.output-icon {
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  border-radius: 11px;
  background: var(--primary-soft);
}

.archive-icon-selected {
  background: var(--accent-soft);
  color: var(--accent);
}

.archive-icon svg,
.output-icon svg {
  width: 28px;
  height: 28px;
}

.archive-summary > div:last-child,
.success-heading > div:last-child {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.archive-summary strong,
.success-file strong {
  overflow: hidden;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.78rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.archive-summary span,
.success-file span {
  color: var(--muted-light);
  font-family: var(--mono);
  font-size: 0.69rem;
}

.entry-list {
  display: grid;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.entry-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  min-height: 25px;
  padding: 4px 7px;
  border-radius: 6px;
  background: var(--surface-muted);
  color: var(--muted);
}

.entry-list code {
  overflow: hidden;
  font-family: var(--mono);
  font-size: 0.69rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-list-icon {
  width: 7px;
  height: 9px;
  flex: 0 0 auto;
  border: 1px solid var(--primary);
  border-radius: 2px;
  background: var(--surface);
}

.preview-footer-line {
  justify-content: space-between;
  margin-top: 8px;
  color: var(--muted-light);
  font-family: var(--mono);
  font-size: 0.66rem;
  line-height: 1.4;
}

.preview-footer-line > span:last-child {
  text-align: right;
}

.metadata-count {
  display: flex;
  align-items: baseline;
  gap: 7px;
  margin: 12px 0 8px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
}

.metadata-count strong {
  color: var(--ink);
  font-size: 1.28rem;
}

.metadata-footer {
  justify-content: space-between;
  margin-top: 9px;
}

.metadata-footer .text-button {
  min-height: 36px;
}

.file-list-controls {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 7px 9px;
  margin-top: 14px;
}

.file-list-controls label {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
}

.file-list-controls input {
  width: 100%;
  min-height: 40px;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink);
  font-size: 0.8rem;
}

.file-list-controls input:focus {
  border-color: var(--primary);
  outline: 0;
  box-shadow: var(--shadow-focus);
}

.file-list-summary {
  grid-column: 2;
  color: var(--muted-light);
  font-family: var(--mono);
  font-size: 0.66rem;
}

.file-list-viewport {
  height: 238px;
  margin-top: 9px;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-muted);
}

.file-list-inner {
  position: relative;
  min-height: 100%;
}

.file-list-row {
  position: absolute;
  right: 7px;
  left: 7px;
  display: flex;
  align-items: center;
  height: 34px;
  padding: 0 8px;
  border-bottom: 1px solid rgba(203, 213, 225, 0.58);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
  white-space: nowrap;
}

.file-list-row::before {
  width: 6px;
  height: 8px;
  margin-right: 8px;
  border: 1px solid var(--primary);
  border-radius: 2px;
  background: var(--surface);
  content: "";
}

.preview-note {
  margin: 13px 0 0;
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1.55;
}

.output-placeholder,
.success-output {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 10px;
  padding: 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.output-placeholder {
  background: var(--surface-muted);
}

.output-placeholder strong,
.success-output h4 {
  display: block;
  margin: 1px 0 3px;
  color: var(--ink);
  font-size: 0.84rem;
  line-height: 1.35;
}

.output-placeholder p {
  margin: 0;
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1.5;
}

.output-icon {
  color: var(--muted-light);
}

.success-output {
  display: grid;
  gap: 12px;
  background: var(--accent-soft);
  border-color: #bbf7d0;
}

.success-heading {
  display: flex;
  align-items: center;
  gap: 10px;
}

.success-icon,
.check-icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
}

.success-icon svg,
.check-icon svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.4;
}

.success-output .panel-kicker {
  color: var(--accent);
}

.success-output h4 {
  margin: 0;
  font-size: 1rem;
}

.success-file {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 3px;
  padding: 10px 11px;
  border: 1px solid rgba(21, 128, 61, 0.2);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.72);
}

.download-link,
.another-button {
  width: 100%;
}

.another-button {
  min-height: 42px;
  background: rgba(255, 255, 255, 0.72);
  font-size: 0.82rem;
}

.tool-disclaimer {
  max-width: 900px;
  margin: 10px auto 0;
  color: var(--muted-light);
  font-size: 0.76rem;
  line-height: 1.55;
  text-align: center;
}

.content-section {
  padding: 72px 0;
  border-top: 1px solid rgba(203, 213, 225, 0.74);
}

.content-section-tinted {
  background: #f1f5f9;
}

.steps-grid,
.two-column-grid,
.comparison-grid,
.troubleshooting-grid {
  display: grid;
  gap: 14px;
}

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

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

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

.step-card,
.detail-card,
.comparison-card,
.troubleshooting-card {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.step-card {
  position: relative;
  padding-top: 60px;
}

.step-number {
  position: absolute;
  top: 20px;
  left: 20px;
  width: 30px;
  height: 30px;
  background: var(--primary-soft);
  color: var(--primary-hover);
  font-size: 0.76rem;
}

.step-card h3,
.detail-card h3,
.comparison-card h3,
.troubleshooting-card h3 {
  margin: 0 0 8px;
  color: var(--ink);
  font-size: 1.02rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.step-card p,
.detail-card p,
.comparison-card p,
.troubleshooting-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.detail-card {
  position: relative;
  padding-left: 68px;
}

.detail-index {
  position: absolute;
  top: 20px;
  left: 20px;
  width: 34px;
  height: 34px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.8rem;
}

.detail-card ul {
  display: grid;
  gap: 7px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.detail-card li {
  position: relative;
  padding-left: 17px;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.5;
}

.detail-card li::before {
  position: absolute;
  top: 0.56em;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
  content: "";
}

.support-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.support-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
}

.support-table th,
.support-table td {
  padding: 15px 17px;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.55;
  text-align: left;
  vertical-align: top;
}

.support-table thead th {
  background: var(--surface-muted);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.69rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.support-table tbody tr:last-child th,
.support-table tbody tr:last-child td {
  border-bottom: 0;
}

.support-table tbody th {
  min-width: 180px;
  color: var(--ink);
  font-weight: 750;
}

.support-status-yes {
  background: var(--accent-soft);
  color: var(--accent);
}

.support-status-check {
  background: var(--warning-soft);
  color: var(--warning);
}

.support-status-no {
  background: var(--danger-soft);
  color: var(--danger);
}

.privacy-section {
  background: var(--surface-muted);
  color: var(--ink);
}

.privacy-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  align-items: start;
  gap: 56px;
}

.privacy-section .section-label {
  color: var(--primary-hover);
}

.privacy-section h2 {
  color: var(--ink);
}

.privacy-section .section-intro p:not(.section-label) {
  color: var(--muted);
}

.privacy-checklist {
  display: grid;
  gap: 11px;
}

.check-row {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.check-icon {
  width: 30px;
  height: 30px;
  background: #22c55e;
}

.check-row strong {
  display: block;
  color: var(--ink);
  font-size: 0.9rem;
}

.check-row p {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.55;
}

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

.comparison-card {
  padding-top: 18px;
}

.comparison-tag {
  display: inline-flex;
  min-height: 25px;
  align-items: center;
  padding: 3px 8px;
  border-radius: 6px;
  background: var(--primary-soft);
  color: var(--primary-hover);
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.05em;
}

.comparison-card h3 {
  margin-top: 12px;
}

.troubleshooting-card {
  border-left: 3px solid var(--warning);
}

.fix-line {
  margin-top: 13px !important;
  padding-top: 11px;
  border-top: 1px solid var(--border);
  font-size: 0.82rem !important;
}

.fix-line strong {
  color: var(--ink);
}

.faq-section {
  background: #f1f5f9;
}

.faq-list {
  display: grid;
  gap: 9px;
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 58px;
  padding: 15px 17px;
  color: var(--ink);
  cursor: pointer;
  font-size: 0.92rem;
  font-weight: 800;
  list-style: none;
}

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

.faq-chevron {
  position: relative;
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
}

.faq-chevron::before,
.faq-chevron::after {
  position: absolute;
  top: 8px;
  left: 4px;
  width: 8px;
  height: 1.5px;
  background: var(--muted);
  content: "";
  transition: transform 180ms ease;
}

.faq-chevron::after {
  transform: rotate(90deg);
}

.faq-item[open] .faq-chevron::after {
  transform: rotate(0);
}

.faq-item p {
  margin: 0;
  padding: 0 17px 17px;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.72;
}

.closing-section {
  padding: 32px 0 72px;
  background: #f1f5f9;
}

.closing-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 30px;
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-xl);
  background: var(--surface-blue);
}

.closing-card h2 {
  margin: 7px 0 8px;
  color: var(--ink);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.15;
}

.closing-card p:not(.section-label) {
  max-width: 660px;
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.closing-button {
  flex: 0 0 auto;
  background: var(--surface);
}

.noscript-note {
  margin-bottom: 32px;
  padding: 14px 16px;
  border: 1px solid #fcd34d;
  border-radius: var(--radius-md);
  background: var(--warning-soft);
  color: #713f12;
  font-size: 0.88rem;
}

.site-footer {
  padding: 48px 0 28px;
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 42px;
}

.footer-brand {
  max-width: 510px;
}

.footer-logo {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.025em;
}

.footer-logo img {
  width: 38px;
  height: 38px;
  border-radius: 10px;
}

.footer-brand > p {
  margin: 13px 0 0;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.7;
}

.footer-email {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 14px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-decoration: none;
}

.footer-email:hover {
  color: var(--primary-hover);
}

.footer-email svg {
  width: 16px;
  height: 16px;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(120px, auto));
  gap: 36px;
}

.footer-group {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}

.footer-group p {
  margin: 0 0 3px;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.footer-group a {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 650;
  text-decoration: none;
}

.footer-group a:hover {
  color: var(--primary-hover);
}

.footer-bottom {
  margin-top: 34px;
  padding-top: 17px;
  border-top: 1px solid var(--border);
}

.footer-bottom p {
  margin: 0;
  color: var(--muted-light);
  font-family: var(--mono);
  font-size: 0.67rem;
  line-height: 1.6;
}

.legal-page {
  padding: 64px 0 84px;
}

.legal-hero {
  max-width: 820px;
  margin: 0 auto 28px;
  text-align: center;
}

.legal-hero h1 {
  margin: 10px 0 14px;
  color: var(--ink);
  font-size: clamp(2rem, 5vw, 3.7rem);
  font-weight: 800;
  letter-spacing: -0.055em;
  line-height: 1.05;
}

.legal-hero p {
  margin: 0 auto;
  color: var(--muted);
  line-height: 1.7;
}

.legal-panel {
  max-width: 900px;
  margin: 0 auto;
  padding: clamp(22px, 4vw, 38px);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.legal-meta {
  color: var(--muted-light);
  font-family: var(--mono);
  font-size: 0.74rem;
}

.legal-panel h2 {
  margin: 28px 0 9px;
  color: var(--ink);
  font-size: 1.25rem;
  letter-spacing: -0.025em;
  line-height: 1.3;
}

.legal-panel p,
.legal-panel li {
  color: var(--muted);
  line-height: 1.75;
}

.legal-panel a {
  color: var(--primary-hover);
  font-weight: 700;
}

.legal-panel ul {
  padding-left: 20px;
}

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

@media (max-width: 960px) {
  .header-inner {
    gap: 14px;
  }

  .header-actions {
    gap: 4px;
  }

  .primary-nav a {
    padding-inline: 9px;
    font-size: 0.8rem;
  }

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

  .privacy-layout {
    gap: 34px;
  }
}

@media (max-width: 760px) {
  .wrap {
    width: min(100% - 28px, 620px);
  }

  .header-inner {
    align-items: center;
    flex-wrap: wrap;
    column-gap: 10px;
    row-gap: 0;
    padding: 12px 0 10px;
  }

  .header-actions {
    order: 2;
    width: auto;
    align-items: center;
    flex-wrap: nowrap;
    gap: 8px;
    margin-left: auto;
  }

  .primary-nav {
    order: 3;
    flex: 1 0 100%;
    width: 100%;
    display: none;
    gap: 4px;
    margin-top: 8px;
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
    box-shadow: var(--shadow-md);
  }

  .primary-nav.is-mobile-open {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    justify-content: stretch;
  }

  .primary-nav.is-mobile-open a {
    justify-content: flex-start;
    width: 100%;
    min-height: 48px;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
  }

  .mobile-menu-toggle {
    display: inline-flex;
  }

  .language-menu {
    order: initial;
    margin-left: 0;
  }

  .hero-section {
    padding-top: 42px;
  }

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

  .input-panel {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .privacy-layout,
  .two-column-grid,
  .comparison-grid,
  .troubleshooting-grid {
    grid-template-columns: 1fr;
  }

  .closing-card,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .closing-button {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .header-inner {
    column-gap: 6px;
  }

  .brand-copy {
    font-size: 0.96rem;
  }

  .brand-copy small {
    display: none;
  }

  .brand-mark {
    width: 40px;
    height: 40px;
  }

  .header-actions {
    gap: 6px;
  }

  .language-menu summary {
    min-width: 0;
    padding-inline: 10px;
    gap: 6px;
    font-size: 0.8rem;
  }

  .language-menu summary svg {
    width: 15px;
    height: 15px;
  }

  .language-current-full {
    display: none;
  }

  .language-current-short {
    display: inline;
  }

  .primary-nav.is-mobile-open a {
    font-size: 0.92rem;
  }

  .hero-section h1 {
    font-size: clamp(2.55rem, 13vw, 4rem);
  }

  .tool-panel {
    padding: 18px 14px;
  }

  .drop-zone {
    min-height: 190px;
    padding: 16px 12px;
  }

  .preview-state {
    padding: 13px;
  }

  .preview-footer-line {
    align-items: flex-start;
    flex-direction: column;
  }

  .preview-footer-line > span:last-child {
    text-align: left;
  }

  .file-list-controls {
    grid-template-columns: 1fr;
  }

  .file-list-summary {
    grid-column: 1;
  }

  .steps-grid {
    grid-template-columns: 1fr;
  }

  .content-section {
    padding: 56px 0;
  }

  .footer-nav {
    width: 100%;
    justify-content: space-between;
    gap: 22px;
  }
}

@media (min-width: 761px) and (max-width: 1280px) {
  .hero-section {
    padding-top: 24px;
    padding-bottom: 12px;
  }

  .hero-section h1 {
    margin: 8px auto;
    font-size: clamp(2.55rem, 5.4vw, 4.3rem);
  }

  .hero-lead {
    font-size: clamp(0.98rem, 1.55vw, 1.05rem);
    line-height: 1.5;
  }

  .trust-list {
    gap: 4px 8px;
    margin-top: 12px;
  }

}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* CPM Calculator homepage */
.cpm-page .hero-section {
  padding-bottom: 20px;
}

.cpm-page .hero-lead {
  max-width: 760px;
}

.cpm-tool-section {
  padding-top: 2px;
}

.cpm-tool-card {
  display: grid;
  max-width: 1080px;
  margin: 0 auto;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--surface);
  box-shadow: var(--shadow-md);
}

.cpm-input-panel,
.cpm-result-panel {
  min-width: 0;
  padding: clamp(20px, 3vw, 32px);
}

.cpm-input-panel {
  border-right: 1px solid var(--border);
}

.cpm-result-panel {
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}

.cpm-panel-heading {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  margin-bottom: 22px;
}

.cpm-panel-heading h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(1.28rem, 2vw, 1.55rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.2;
}

.cpm-mode-fieldset {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.cpm-mode-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 9px;
}

.cpm-field-label {
  color: var(--ink);
  font-size: 0.88rem;
  font-weight: 800;
}

.cpm-field-helper {
  margin: 0;
  color: var(--muted-light);
  font-size: 0.76rem;
  line-height: 1.5;
}

.cpm-mode-grid {
  display: grid;
  gap: 7px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.cpm-mode-button {
  display: flex;
  min-width: 0;
  min-height: 64px;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 3px;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-muted);
  color: var(--muted);
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 800;
  line-height: 1.2;
  text-align: left;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.cpm-mode-button small {
  color: var(--muted-light);
  font-size: 0.67rem;
  font-weight: 700;
  line-height: 1.2;
}

.cpm-mode-button:hover {
  border-color: var(--border-strong);
  background: var(--surface-blue);
  color: var(--primary-hover);
  transform: translateY(-1px);
}

.cpm-mode-button.is-selected,
.cpm-mode-button[aria-selected="true"] {
  border-color: var(--primary);
  background: var(--primary-soft);
  color: var(--primary-hover);
  box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.08);
}

.cpm-mode-button.is-selected small,
.cpm-mode-button[aria-selected="true"] small {
  color: var(--primary-hover);
}

.cpm-mode-button:disabled {
  cursor: wait;
  opacity: 0.58;
  transform: none;
}

.cpm-form {
  margin-top: 20px;
}

.cpm-field-stack {
  display: grid;
  gap: 17px;
}

.cpm-field-group {
  min-width: 0;
}

.cpm-label-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 7px;
}

.cpm-field-state {
  min-height: 1.2em;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.66rem;
  font-weight: 800;
  line-height: 1.2;
  text-align: right;
}

.cpm-money-control,
.cpm-unit-control {
  display: grid;
  min-width: 0;
  align-items: stretch;
}

.cpm-money-control {
  grid-template-columns: minmax(126px, 0.47fr) minmax(0, 1fr);
}

.cpm-suffix-control {
  grid-template-columns: minmax(0, 1fr) auto;
}

.cpm-currency-control {
  grid-template-columns: auto minmax(0, 1fr) auto;
}

.cpm-money-control select,
.cpm-money-control input,
.cpm-unit-control input,
.cpm-input-prefix,
.cpm-input-unit {
  min-width: 0;
  min-height: 48px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--ink);
  font-size: 0.94rem;
}

.cpm-money-control select,
.cpm-money-control input,
.cpm-unit-control input {
  width: 100%;
  padding: 10px 12px;
  outline: 0;
}

.cpm-money-control select {
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  color: var(--muted);
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 750;
}

.cpm-money-control input {
  border-left: 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.cpm-unit-control input {
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.cpm-currency-control input {
  border-left: 0;
  border-right: 0;
  border-radius: 0;
}

.cpm-input-prefix,
.cpm-input-unit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 11px;
  background: var(--surface-muted);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 800;
  white-space: nowrap;
}

.cpm-input-prefix {
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.cpm-input-unit {
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.cpm-field-group.is-calculated input[readonly] {
  border-color: #93c5fd;
  background: var(--surface-blue);
  color: var(--primary-hover);
  font-weight: 800;
}

.cpm-field-group.is-calculated .cpm-input-prefix,
.cpm-field-group.is-calculated .cpm-input-unit {
  border-color: #93c5fd;
  background: var(--surface-blue);
  color: var(--primary-hover);
}

.cpm-field-group input:focus,
.cpm-field-group select:focus {
  position: relative;
  z-index: 1;
  border-color: var(--primary);
  box-shadow: var(--shadow-focus);
}

.cpm-field-group.has-error input,
.cpm-field-group.has-error select {
  border-color: var(--danger);
}

.cpm-field-group.has-error .cpm-input-prefix,
.cpm-field-group.has-error .cpm-input-unit {
  border-color: var(--danger);
}

.cpm-field-group .cpm-field-helper {
  margin-top: 6px;
}

.cpm-field-error {
  margin: 5px 0 0;
  color: var(--danger);
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1.45;
}

.cpm-action-stack {
  margin-top: 22px;
}

.cpm-calculate-button {
  width: 100%;
  min-height: 50px;
}

.cpm-calculate-button.is-busy {
  cursor: wait;
}

.cpm-calculate-button.is-busy svg {
  animation: cpm-pulse 900ms ease-in-out infinite;
}

.cpm-secondary-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 10px;
}

.cpm-secondary-actions .secondary-button,
.cpm-secondary-actions .text-button {
  min-height: 42px;
  font-size: 0.78rem;
}

.cpm-secondary-actions .secondary-button {
  padding-inline: 12px;
}

.cpm-secondary-actions .text-button {
  padding-inline: 8px;
  border: 0;
  background: transparent;
  color: var(--muted);
}

.cpm-secondary-actions .text-button:hover {
  color: var(--primary-hover);
}

.cpm-required-note {
  margin: 12px 0 0;
  color: var(--muted-light);
  font-size: 0.7rem;
  line-height: 1.5;
}

.cpm-result-panel .cpm-panel-heading {
  margin-bottom: 19px;
}

.cpm-result-live {
  min-width: 0;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-lg);
  background: var(--surface-blue);
}

.cpm-result-live[data-state="error"] {
  border-color: #fecaca;
  background: var(--danger-soft);
}

.cpm-result-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.cpm-result-live[data-state="error"] .cpm-result-status {
  color: var(--danger);
}

.cpm-status-icon {
  display: inline-grid;
  width: 22px;
  height: 22px;
  place-items: center;
  border-radius: 50%;
  background: var(--accent-soft);
}

.cpm-result-live[data-state="error"] .cpm-status-icon {
  background: var(--danger-soft);
}

.cpm-status-icon svg,
.cpm-result-note svg,
.cpm-empty-icon svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.cpm-result-number {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 21px;
  color: var(--ink);
}

.cpm-result-number strong {
  max-width: 100%;
  overflow-wrap: anywhere;
  font-size: clamp(2.3rem, 5vw, 4rem);
  font-variant-numeric: tabular-nums;
  font-weight: 850;
  letter-spacing: -0.07em;
  line-height: 0.98;
}

.cpm-result-number span {
  color: var(--primary-hover);
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.cpm-result-summary {
  margin: 13px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.65;
}

.cpm-formula-box {
  display: grid;
  gap: 6px;
  margin-top: 21px;
  padding: 13px 14px;
  border: 1px solid rgba(148, 163, 184, 0.62);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.72);
}

.cpm-formula-box span,
.cpm-formula-card-label {
  color: var(--muted-light);
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cpm-formula-box code,
.cpm-mode-card code,
.cpm-formula-row code,
.cpm-comparison-table code {
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.cpm-result-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 17px;
}

.cpm-result-actions .secondary-button,
.cpm-result-actions .text-button {
  min-height: 43px;
  font-size: 0.78rem;
}

.cpm-result-actions .text-button {
  padding: 8px 5px;
  color: var(--primary-hover);
}

.cpm-copy-feedback {
  margin: 10px 0 0;
  color: var(--danger);
  font-size: 0.76rem;
  font-weight: 700;
  line-height: 1.5;
}

.cpm-result-empty {
  display: grid;
  min-height: 270px;
  place-items: center;
  align-content: center;
  gap: 11px;
  padding: 28px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.62);
  text-align: center;
}

.cpm-empty-icon {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 14px;
  background: var(--surface-muted);
  color: var(--primary);
}

.cpm-empty-icon svg {
  width: 25px;
  height: 25px;
  stroke-width: 1.6;
}

.cpm-result-empty strong {
  color: var(--ink);
  font-size: 1.03rem;
}

.cpm-result-empty p {
  max-width: 330px;
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.65;
}

.cpm-result-note {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: auto 0 0;
  padding-top: 20px;
  color: var(--muted-light);
  font-size: 0.74rem;
  line-height: 1.55;
}

.cpm-result-note svg {
  flex: 0 0 auto;
  margin-top: 2px;
  color: var(--accent);
}

.cpm-formula-strip {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  max-width: 1080px;
  margin: 12px auto 0;
  padding: 13px 15px;
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-md);
  background: var(--surface-blue);
}

.cpm-formula-strip-icon {
  display: inline-grid;
  width: 25px;
  height: 25px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-family: Georgia, serif;
  font-size: 1rem;
  font-style: italic;
  font-weight: 700;
}

.cpm-formula-strip p {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.55;
}

.cpm-formula-strip strong {
  color: var(--ink);
}

.cpm-formula-layout {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
}

.cpm-formula-card,
.cpm-example-card,
.cpm-platform-note {
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.cpm-formula-card > p:not(.cpm-formula-card-label),
.cpm-example-card > p,
.cpm-platform-note > p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.72;
}

.cpm-large-formula {
  display: block;
  margin-top: 13px;
  color: var(--primary-hover);
  font-family: var(--mono);
  font-size: clamp(1.1rem, 2.3vw, 1.55rem);
  font-weight: 800;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.cpm-formula-rows {
  display: grid;
  gap: 8px;
  margin-top: 19px;
}

.cpm-formula-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding-top: 9px;
  border-top: 1px solid var(--border);
}

.cpm-formula-row strong {
  color: var(--ink);
  font-size: 0.8rem;
  white-space: nowrap;
}

.cpm-formula-row code {
  color: var(--muted);
  font-size: 0.72rem;
  text-align: right;
}

.cpm-example-card {
  background: var(--surface-blue);
}

.cpm-example-card h3 {
  margin: 13px 0 0;
  color: var(--ink);
  font-size: 1.18rem;
  line-height: 1.3;
}

.cpm-example-equation {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 19px;
  padding: 14px;
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.72);
  color: var(--primary-hover);
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 800;
  line-height: 1.5;
}

.cpm-example-equation strong {
  width: 100%;
  padding-top: 8px;
  border-top: 1px solid #bfdbfe;
  color: var(--ink);
  font-size: 0.84rem;
}

.cpm-example-note {
  color: var(--muted-light) !important;
  font-size: 0.78rem !important;
}

.cpm-mode-card {
  display: flex;
  flex-direction: column;
}

.cpm-mode-card p {
  flex: 1 1 auto;
}

.cpm-mode-card code {
  display: block;
  margin-top: 17px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  color: var(--primary-hover);
  font-size: 0.72rem;
}

.cpm-table-wrap {
  box-shadow: var(--shadow-sm);
}

.cpm-comparison-table {
  min-width: 700px;
}

.cpm-comparison-table tbody th {
  color: var(--primary-hover);
}

.cpm-comparison-table code {
  color: var(--ink);
  font-size: 0.75rem;
}

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

.cpm-use-case-card {
  padding-right: 20px;
}

.cpm-platform-note {
  display: grid;
  gap: 24px;
  margin-top: 14px;
  grid-template-columns: minmax(190px, 0.65fr) minmax(0, 1.35fr);
  align-items: start;
  background: var(--surface-blue);
}

.cpm-platform-note h3 {
  margin: 8px 0 0;
  color: var(--ink);
  font-size: 1.16rem;
  line-height: 1.3;
}

.cpm-platform-note > p {
  margin: 0;
}

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

.cpm-limit-card {
  border-left-color: var(--primary);
}

@keyframes cpm-pulse {
  0%,
  100% {
    opacity: 0.58;
    transform: scale(0.92);
  }
  50% {
    opacity: 1;
    transform: scale(1);
  }
}

@media (max-width: 960px) {
  .cpm-tool-card {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .cpm-mode-button {
    font-size: 0.73rem;
  }

  .cpm-mode-button small {
    font-size: 0.62rem;
  }

  .cpm-use-case-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .cpm-tool-card,
  .cpm-formula-layout,
  .cpm-platform-note {
    grid-template-columns: 1fr;
  }

  .cpm-input-panel {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .cpm-result-panel {
    min-height: 0;
  }

  .cpm-mode-button {
    min-height: 61px;
  }

  .cpm-formula-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .cpm-formula-row code {
    text-align: left;
  }
}

@media (max-width: 480px) {
  .cpm-input-panel,
  .cpm-result-panel {
    padding: 18px 14px;
  }

  .cpm-mode-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .cpm-mode-grid {
    gap: 6px;
  }

  .cpm-mode-button {
    min-height: 70px;
    padding: 8px 8px;
    font-size: 0.69rem;
  }

  .cpm-mode-button small {
    font-size: 0.58rem;
  }

  .cpm-money-control {
    grid-template-columns: minmax(104px, 0.52fr) minmax(0, 1fr);
  }

  .cpm-money-control select {
    padding-inline: 7px;
    font-size: 0.69rem;
  }

  .cpm-result-number {
    gap: 6px;
  }

  .cpm-result-number strong {
    font-size: clamp(2rem, 12vw, 3rem);
  }

  .cpm-result-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .cpm-result-actions .secondary-button,
  .cpm-result-actions .text-button {
    width: 100%;
  }

  .cpm-formula-card,
  .cpm-example-card,
  .cpm-platform-note {
    padding: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cpm-calculate-button.is-busy svg {
    animation: none;
  }
}