:root {
  --navy: #0c1534;
  --muted: #43506d;
  --cyan: #00d5db;
  --cyan-deep: #006d75;
  --cyan-button: #00d5db;
  --cyan-soft: #effcfd;
  --cyan-wash: #f3fcfd;
  --line: #dbe3ea;
  --line-strong: #cbd6e0;
  --surface: #ffffff;
  --page: #fbfdfe;
  --warm: #fff9ed;
  --warm-line: #f4db9e;
  --danger: #c63d4f;
  --shadow: 0 8px 24px rgba(15, 32, 59, 0.035);
  --section-heading-size: 1rem;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--navy);
  background: var(--page);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

:root[data-theme="dark"] {
  --navy: #eef6ff;
  --muted: #b7c6da;
  --cyan: #2ce3e5;
  --cyan-deep: #6cebed;
  --cyan-button: #08c9d2;
  --cyan-soft: #12323e;
  --cyan-wash: #122b39;
  --line: #2d4056;
  --line-strong: #486078;
  --surface: #142239;
  --page: #0b1425;
  --warm: #2a281f;
  --warm-line: #665731;
  --danger: #ff9aaa;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--page);
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 6% 11%, rgba(0, 213, 219, 0.035), transparent 24rem),
    var(--page);
}

button,
input,
select {
  font: inherit;
}

button {
  color: inherit;
}

button:focus-visible,
a:focus-visible {
  outline: 3px solid var(--cyan-deep);
  outline-offset: 3px;
}

select:focus,
input:focus {
  outline: none;
}

.svg-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.icon {
  display: inline-block;
  width: 1.35rem;
  height: 1.35rem;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

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

[hidden] {
  display: none !important;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  min-height: 6.9rem;
  padding: 1rem clamp(1.25rem, 4vw, 4.5rem);
  background: #424856;
  border-bottom: 1px solid #e5eaee;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  color: #fff;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 4.1rem;
  height: 4.1rem;
  place-items: center;
  color: var(--cyan);
}

.brand-mark .icon {
  width: 4rem;
  height: 4rem;
  stroke-width: 1.55;
}

.brand-copy {
  display: grid;
  gap: 0.25rem;
}

.brand-name {
  display: flex;
  align-items: baseline;
  font-size: clamp(2.1rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.075em;
  line-height: 0.95;
}

.brand-name span:last-child {
  color: var(--cyan);
}

.brand-name span:first-child {
  color: #f67313;
}

.brand-tagline {
  color: #fff;
  font-size: 1rem;
  letter-spacing: -0.01em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: clamp(0.55rem, 2vw, 1.8rem);
  color: #fff;
}

.quiet-action,
.icon-action {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.15rem;
  background: none;
  border: 0;
  cursor: pointer;
  font-size: 1rem;
  white-space: nowrap;
  color: #fff;
}

.quiet-action .icon,
.icon-action .icon {
  width: 1.55rem;
  height: 1.55rem;
  stroke-width: 1.7;
}

.quiet-action:hover:not(.deferred-control) {
  color: #fff;
}

.deferred-control {
  color: #fff;
  cursor: default;
}

.site-header button:focus-visible,
.site-header a:focus-visible {
  outline-color: #fff;
}

.app-shell {
  width: min(1180px, calc(100% - 2rem));
  margin: 1.25rem auto 3.2rem;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  box-shadow: var(--shadow);
}

.input-panel {
  scroll-margin-top: 8rem;
  padding: 1.65rem 1.75rem 1.55rem;
}

.input-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(16rem, 20rem);
  gap: 1.9rem;
  align-items: start;
}

.setup-column {
  min-width: 0;
}

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

.section-label,
.package-fieldset legend {
  display: block;
  margin: 0;
  color: var(--navy);
  font-size: var(--section-heading-size);
  font-weight: 750;
  letter-spacing: -0.02em;
}

.courier-field {
  margin-bottom: 1.55rem;
}

.courier-category-picker {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.35rem;
  margin-top: 0.7rem;
  padding: 0.25rem;
  background: var(--cyan-wash);
  border: 1px solid rgba(0, 213, 219, 0.22);
  border-radius: 0.55rem;
}

.courier-category-option {
  min-width: 0;
  min-height: 2.15rem;
  padding: 0.35rem 0.55rem;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 0.35rem;
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1.2;
}

.courier-category-option:hover {
  color: var(--cyan-deep);
}

.courier-category-option.is-selected {
  color: var(--navy);
  background: var(--surface);
  box-shadow: 0 2px 6px rgba(15, 32, 59, 0.07);
}

.select-control,
.input-control {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 3.9rem;
  margin-top: 0.85rem;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 0.65rem;
}

.select-control:focus-within,
.input-control:focus-within {
  border-color: var(--cyan);
  box-shadow: none;
}

.select-control .input-icon {
  margin-left: 0.95rem;
  color: var(--cyan);
  stroke-width: 1.8;
}

select,
input {
  min-width: 0;
  color: var(--navy);
  background: transparent;
  border: 0;
}

select {
  width: 100%;
  height: 3.75rem;
  padding: 0 2.85rem 0 0.8rem;
  appearance: none;
  cursor: pointer;
  font-size: 1.12rem;
  font-weight: 650;
}

#courier option {
  color: var(--navy);
  background: var(--surface);
}

.select-chevron {
  position: absolute;
  right: 0.95rem;
  pointer-events: none;
  width: 1.1rem;
  height: 1.1rem;
  stroke-width: 2;
}

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

.field-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.15rem;
  margin-top: 1.1rem;
}

.field-group > label {
  display: block;
  margin-bottom: 0.55rem;
  color: var(--navy);
  font-size: 0.92rem;
  font-weight: 700;
}

.field-group > label.section-label {
  font-size: var(--section-heading-size);
}

.input-control {
  min-height: 3.9rem;
  margin-top: 0;
}

.input-control input {
  width: 100%;
  height: 3.7rem;
  padding: 0 3.15rem 0 0.9rem;
  font-size: 1.35rem;
  font-weight: 750;
}

.input-control .unit {
  position: absolute;
  right: 0.85rem;
  color: var(--navy);
  font-size: 1rem;
  font-weight: 550;
}

input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  margin: 0;
  appearance: none;
}

input[type="number"] {
  appearance: textfield;
}

.field-helper {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.field-helper .icon {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--cyan);
  stroke-width: 2;
}

.rule-helper {
  margin-top: 0.55rem;
  color: var(--muted);
  font-size: 0.8rem;
}

.field-error {
  min-height: 1.05rem;
  margin: 0.32rem 0 0;
  color: var(--danger);
  font-size: 0.78rem;
  line-height: 1.35;
}

.is-invalid {
  border-color: var(--danger) !important;
  box-shadow: none !important;
}

.form-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  min-height: 3rem;
  margin-top: 0.25rem;
}

.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 2.75rem;
  padding: 0.68rem 1rem;
  color: #fff;
  background: var(--cyan-button);
  border: 0;
  border-radius: 0.55rem;
  box-shadow: 0 7px 15px rgba(0, 174, 188, 0.18);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 750;
}

.primary-button:hover {
  background: #00bbc3;
}

.primary-button .icon {
  width: 1.05rem;
  height: 1.05rem;
}

.form-status {
  margin: 0;
  color: var(--danger);
  font-size: 0.82rem;
}

.about-card {
  min-height: 8.2rem;
  padding: 1.15rem 1.2rem;
  background: linear-gradient(135deg, #f0fcfd, #effbfd 58%, #eaf9fb);
  border-radius: 0.7rem;
}

.about-heading {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.about-heading h2,
.notice-panel h2,
.details-heading h2 {
  margin: 0;
  color: var(--navy);
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.info-badge {
  display: grid;
  width: 1.7rem;
  height: 1.7rem;
  place-items: center;
  color: white;
  background: var(--cyan-button);
  border-radius: 50%;
}

.info-badge .icon {
  width: 1.05rem;
  height: 1.05rem;
  stroke-width: 2.2;
}

.about-card p {
  margin: 0.95rem 0 0;
  color: var(--navy);
  font-size: 0.98rem;
  line-height: 1.75;
}

.result-panel {
  min-height: 13rem;
  margin-top: 1.15rem;
  padding: 1.55rem 1.75rem;
}

.result-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.95rem;
  min-height: 9.8rem;
  color: var(--muted);
  text-align: left;
}

.result-empty[hidden] {
  display: none;
}

.result-empty strong {
  display: block;
  color: var(--navy);
  font-size: 1rem;
}

.result-empty p {
  margin: 0.35rem 0 0;
  font-size: 0.86rem;
}

.empty-icon,
.metric-icon,
.details-icon,
.notice-icon {
  display: grid;
  place-items: center;
  color: var(--cyan);
  background: var(--cyan-soft);
  border-radius: 50%;
}

.empty-icon {
  width: 3rem;
  height: 3rem;
}

.result-content[hidden] {
  display: none;
}

.metric-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr) 3rem minmax(15rem, 1.2fr);
  align-items: center;
  gap: 1.1rem;
}

.metric-block {
  min-width: 0;
}

.volumetric-metric {
  display: flex;
  align-items: center;
  gap: 1.05rem;
  padding-right: 1.1rem;
  border-right: 1px solid var(--line);
}

.metric-icon {
  width: 6.25rem;
  height: 6.25rem;
  flex: 0 0 auto;
  background: linear-gradient(145deg, #eafcfd, #def8fa);
}

.metric-icon .icon {
  width: 3.1rem;
  height: 3.1rem;
  stroke-width: 1.35;
}

.metric-copy {
  min-width: 0;
}

.metric-label {
  margin: 0;
  color: var(--navy);
  font-size: 0.91rem;
  font-weight: 550;
  letter-spacing: -0.01em;
  text-transform: uppercase;
}

.metric-value {
  max-width: 100%;
  margin: 0.55rem 0 0;
  color: var(--navy);
  font-size: clamp(1.8rem, 4vw, 2.45rem);
  font-weight: 800;
  letter-spacing: -0.065em;
  line-height: 1;
  overflow-wrap: anywhere;
}

.metric-value span {
  font-size: 0.55em;
  letter-spacing: -0.02em;
}

.accent-value,
.chargeable-value {
  color: var(--cyan);
}

.metric-formula,
.chargeable-note {
  margin: 0.75rem 0 0;
  color: var(--navy);
  font-size: 0.86rem;
  line-height: 1.45;
}

.actual-metric {
  padding-left: 0.2rem;
}

.metric-arrow {
  display: grid;
  width: 3rem;
  height: 3rem;
  place-items: center;
  color: var(--navy);
  background: var(--cyan-soft);
  border-radius: 50%;
}

.metric-arrow .icon {
  width: 1.65rem;
  height: 1.65rem;
}

.chargeable-metric {
  min-height: 9.65rem;
  padding: 1.25rem 1.35rem;
  background: linear-gradient(145deg, #effcfd, #eafafb);
  border-radius: 0.7rem;
}

.chargeable-metric .metric-value {
  font-size: clamp(2rem, 4.5vw, 2.8rem);
}

.chargeable-note {
  max-width: 16rem;
  margin-top: 0.85rem;
}

.formula-strip {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  min-height: 2.75rem;
  margin-top: 1.25rem;
  padding: 0.55rem 1rem;
  color: var(--navy);
  background: linear-gradient(90deg, #effbfd, #effcfd 62%, #e8fafb);
  border-radius: 0.55rem;
  font-size: 0.88rem;
}

.formula-strip strong {
  font-weight: 600;
}

.factor-badge {
  margin-left: auto;
  padding: 0.35rem 0.85rem;
  color: var(--cyan);
  background: rgba(0, 213, 219, 0.1);
  border-radius: 999px;
  font-weight: 700;
  white-space: nowrap;
}

.result-explanation {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-top: 0.8rem;
  color: var(--muted);
  font-size: 0.86rem;
}

.result-explanation p {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
}

.conversion-section {
  margin-top: 1.45rem;
}

.conversion-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.8rem;
}

.conversion-eyebrow {
  margin: 0 0 0.15rem;
  color: var(--cyan-deep);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.conversion-heading h2 {
  margin: 0;
  font-size: var(--section-heading-size);
  letter-spacing: -0.02em;
}

.conversion-heading > p {
  max-width: 32rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.45;
  text-align: right;
}

.conversion-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

.conversion-card {
  min-width: 0;
  padding: 1rem 1.05rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  box-shadow: 0 5px 15px rgba(15, 32, 59, 0.025);
}

.conversion-card-heading {
  display: flex;
  min-height: 2.35rem;
  align-items: center;
  gap: 0.65rem;
}

.conversion-icon {
  display: grid;
  width: 2.15rem;
  height: 2.15rem;
  flex: 0 0 auto;
  place-items: center;
  color: var(--cyan-deep);
  background: var(--cyan-wash);
  border: 1px solid rgba(0, 213, 219, 0.24);
  border-radius: 0.45rem;
}

.conversion-icon .icon {
  width: 1.25rem;
  height: 1.25rem;
  stroke-width: 1.9;
}

.conversion-card h3 {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.2;
}

.conversion-card-heading p {
  margin: 0.2rem 0 0;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.3;
}

.conversion-label {
  display: block;
  margin-top: 0.85rem;
  color: var(--navy);
  font-size: 0.76rem;
  font-weight: 750;
}

.conversion-input-control {
  display: flex;
  min-height: 2.75rem;
  align-items: center;
  margin-top: 0.35rem;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 0.45rem;
}

.conversion-input-control:focus-within {
  border-color: var(--cyan);
}

.conversion-input-control input {
  width: 100%;
  height: 2.65rem;
  padding: 0 0.65rem;
  font-size: 1rem;
  font-weight: 700;
}

.conversion-route {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: end;
  gap: 0.4rem;
  margin-top: 0.7rem;
}

.conversion-select-label {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 0.28rem;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 750;
}

.conversion-select-label select {
  width: 100%;
  height: 2.45rem;
  padding: 0 0.45rem;
  color: var(--navy);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 0.45rem;
  appearance: auto;
  cursor: pointer;
  font-size: 0.73rem;
  font-weight: 650;
}

.conversion-select-label select:focus {
  border-color: var(--cyan);
}

.swap-button {
  display: grid;
  width: 2rem;
  height: 2.45rem;
  place-items: center;
  color: var(--cyan-deep);
  background: var(--cyan-wash);
  border: 1px solid rgba(0, 213, 219, 0.3);
  border-radius: 0.45rem;
  cursor: pointer;
  font-size: 1.2rem;
  line-height: 1;
}

.swap-button:hover {
  color: var(--navy);
  border-color: var(--cyan);
}

.conversion-result {
  display: flex;
  min-height: 2.55rem;
  align-items: center;
  margin: 0.7rem 0 0;
  padding: 0.55rem 0.65rem;
  color: var(--navy);
  background: linear-gradient(90deg, #effbfd, #f5fdfe);
  border-radius: 0.45rem;
  font-size: 0.95rem;
  font-weight: 750;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.conversion-status,
.conversion-freshness,
.conversion-attribution {
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: 0.68rem;
  line-height: 1.35;
}

.conversion-freshness {
  min-height: 1.8rem;
}

.conversion-attribution {
  margin-top: 0.35rem;
}

.conversion-attribution a {
  color: var(--cyan-deep);
  font-weight: 700;
}

.explanation-check {
  display: grid;
  width: 1.45rem;
  height: 1.45rem;
  place-items: center;
  color: #fff;
  background: var(--cyan-button);
  border-radius: 50%;
}

.explanation-check .icon {
  width: 0.9rem;
  height: 0.9rem;
  stroke-width: 2.5;
}

.courier-section {
  scroll-margin-top: 8rem;
  margin-top: 1.6rem;
}

.section-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 2px solid var(--line);
}

.section-tab {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  min-height: 3rem;
  color: var(--navy);
  font-size: 1.03rem;
  font-weight: 700;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.section-tab .icon {
  color: var(--cyan);
}

.section-tab.active {
  color: var(--cyan);
}

.section-tab.active::after {
  position: absolute;
  right: 0;
  bottom: -2px;
  left: 0;
  height: 3px;
  background: var(--cyan);
  content: "";
}

.deferred-tab {
  opacity: 0.98;
}

.courier-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 1.75rem;
}

.courier-grid[data-category="domestic"] {
  grid-template-columns: repeat(7, minmax(0, 1fr));
}

.courier-card[hidden] {
  display: none;
}

.courier-card {
  display: flex;
  min-height: 15.8rem;
  flex-direction: column;
  align-items: center;
  padding: 1.05rem 0.65rem 0.95rem;
  color: var(--navy);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  box-shadow: 0 5px 15px rgba(15, 32, 59, 0.025);
  cursor: pointer;
  text-align: center;
  transition: border-color 130ms ease, box-shadow 130ms ease, transform 130ms ease;
}

.courier-card:hover {
  border-color: rgba(0, 213, 219, 0.65);
  box-shadow: 0 8px 18px rgba(0, 174, 188, 0.09);
  transform: translateY(-1px);
}

.courier-card.is-selected {
  border-color: var(--cyan);
  box-shadow: 0 8px 20px rgba(0, 174, 188, 0.1);
}

.brand-badge {
  display: flex;
  width: 100%;
  min-height: 4rem;
  align-items: center;
  justify-content: center;
  max-width: 8.5rem;
  margin-bottom: 0.7rem;
  font-weight: 850;
  letter-spacing: -0.06em;
}

.brand-image {
  border-radius: 0;
}

.brand-image img {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: 4.2rem;
  object-fit: contain;
}

.courier-card[data-courier="startrack"] .brand-badge,
.courier-card[data-courier="cti"] .brand-badge,
.courier-card[data-courier="centurion"] .brand-badge,
.courier-card[data-courier="tas-freight"] .brand-badge {
  min-height: 3.5rem;
  padding: 0.35rem 0.45rem;
  background: #fff;
  border-radius: 0.3rem;
}

.courier-card[data-courier="startrack"] .brand-badge img,
.courier-card[data-courier="cti"] .brand-badge img,
.courier-card[data-courier="centurion"] .brand-badge img,
.courier-card[data-courier="tas-freight"] .brand-badge img {
  width: 100%;
  max-height: 3.35rem;
}

.courier-card[data-courier="maitex"] .brand-badge {
  min-height: 3.5rem;
  padding: 0.4rem 0.6rem;
  background: #0b4d50;
  border-radius: 0.3rem;
}

.courier-card[data-courier="maitex"] .brand-badge img {
  width: 100%;
  max-height: 3.25rem;
}

.courier-card[data-courier="tls"] .brand-badge {
  min-height: 3.5rem;
  padding: 0.3rem 0.55rem;
  background: #585f6e;
  border-radius: 0.3rem;
}

.courier-card[data-courier="tls"] .brand-badge img {
  max-width: 6rem;
  max-height: 3.3rem;
}

.courier-card[data-courier="followmont"] .brand-badge {
  min-height: 3.5rem;
  padding: 0.3rem 0.45rem;
  background: #002b6d;
  border-radius: 0.3rem;
}

.courier-card[data-courier="followmont"] .brand-badge img {
  width: 100%;
  max-height: 3.35rem;
}

.courier-card[data-courier="sadliers"] .brand-badge {
  min-height: 3.5rem;
  padding: 0.55rem 0.7rem;
  background: #004b47;
  border-radius: 0.3rem;
}

.courier-card[data-courier="sadliers"] .brand-badge img {
  width: 100%;
  max-height: 2.25rem;
}

.courier-card[data-courier="capital"] .brand-badge {
  min-height: 3.5rem;
  padding: 0.35rem 0.65rem;
  background-image: linear-gradient(90deg, #2d2e73, #1e05e9);
  border-radius: 0.3rem;
}

.courier-card[data-courier="capital"] .brand-badge img {
  max-height: 3.5rem;
}

.brand-fallback {
  min-height: 3.35rem;
  padding: 0.45rem 0.55rem;
  color: var(--muted);
  border: 1px dashed var(--line-strong);
  border-radius: 0.35rem;
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0;
  line-height: 1.2;
  text-align: center;
}

.courier-card strong {
  margin-top: 0.05rem;
  font-size: 0.98rem;
  line-height: 1.2;
}

.courier-card > span:not(.brand-badge):not(.courier-divisor):not(.courier-factor):not(.selection-indicator) {
  margin-top: 0.12rem;
  font-size: 0.82rem;
}

.courier-divisor {
  margin-top: 1rem;
  color: var(--cyan);
  font-size: 1.08rem;
  font-weight: 800;
}

.courier-factor {
  margin-top: 0.48rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.domestic-toggle {
  display: flex;
  width: 100%;
  min-height: 2.9rem;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  margin-top: 0.8rem;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 0.55rem;
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 700;
}

.domestic-toggle:hover {
  color: var(--cyan-deep);
  border-color: rgba(0, 213, 219, 0.65);
}

.domestic-toggle-chevron {
  width: 1.1rem;
  height: 1.1rem;
  transition: transform 130ms ease;
}

.domestic-toggle.is-expanded .domestic-toggle-chevron {
  transform: rotate(180deg);
}

.selection-indicator {
  display: grid;
  width: 1.65rem;
  height: 1.65rem;
  place-items: center;
  margin-top: auto;
  color: transparent;
  border: 2px solid var(--line-strong);
  border-radius: 50%;
}

.selection-indicator .icon {
  width: 1rem;
  height: 1rem;
  stroke-width: 2.5;
}

.courier-card.is-selected .selection-indicator {
  color: #fff;
  background: var(--cyan-button);
  border-color: var(--cyan-button);
}

.details-panel {
  margin-top: 1.35rem;
  padding: 1.1rem 1.6rem;
}

.details-heading {
  display: grid;
  width: 100%;
  grid-template-columns: 2.2rem minmax(0, 1fr) 1.3rem;
  align-items: center;
  gap: 0.8rem;
  padding: 0;
  color: inherit;
  background: transparent;
  border: 0;
  cursor: pointer;
  text-align: left;
}

.details-icon {
  width: 2rem;
  height: 2rem;
  border-radius: 0.3rem;
}

.details-icon .icon {
  width: 1.3rem;
  height: 1.3rem;
  stroke-width: 2.1;
}

.details-heading h2 {
  font-size: var(--section-heading-size);
}

.details-chevron {
  justify-self: end;
  width: 1.25rem;
  height: 1.25rem;
  stroke-width: 2;
  transition: transform 130ms ease;
}

.details-chevron.is-expanded {
  transform: rotate(180deg);
}

.details-content {
  margin: 0.95rem 0 0 3rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--line);
}

.details-content p {
  margin: 0;
  color: var(--navy);
  font-size: 0.9rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.notice-panel {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: 0.8rem;
  margin-top: 1.25rem;
  padding: 1rem 1.6rem;
  background: var(--warm);
  border: 1px solid var(--warm-line);
  border-radius: 0.7rem;
}

.notice-icon {
  width: 1.8rem;
  height: 1.8rem;
  color: var(--cyan);
  background: transparent;
}

.notice-icon .icon {
  width: 1.55rem;
  height: 1.55rem;
  fill: currentColor;
  stroke: currentColor;
}

.notice-panel h2 {
  font-size: var(--section-heading-size);
}

.notice-panel p {
  max-width: 67rem;
  margin: 0.3rem 0 0;
  color: var(--navy);
  font-size: 0.9rem;
  line-height: 1.6;
}

.bottom-nav {
  color: #fff;
  background: #605881;
}

.bottom-nav-inner {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  width: min(1180px, calc(100% - 2rem));
  min-height: 4.75rem;
  margin: 0 auto;
}

.bottom-nav-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0;
  color: inherit;
  background: transparent;
  border: 0;
  cursor: pointer;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 650;
}

.bottom-nav .deferred-control {
  color: #fff;
}

.bottom-nav-item .icon {
  width: 1.75rem;
  height: 1.75rem;
  stroke-width: 1.8;
}

.bottom-nav-item.is-active {
  font-weight: 800;
}

@media (max-width: 900px) {
  .site-header {
    min-height: 6rem;
  }

  .brand-mark,
  .brand-mark .icon {
    width: 3.35rem;
    height: 3.35rem;
  }

  .brand-name {
    font-size: 2.1rem;
  }

  .brand-tagline {
    font-size: 0.85rem;
  }

  .quiet-action span {
    display: none;
  }

  .header-actions {
    gap: 0.85rem;
  }

  .input-layout {
    grid-template-columns: 1fr;
  }

  .about-card {
    min-height: auto;
  }

  .metric-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.8fr) 2.6rem minmax(12rem, 1.1fr);
    gap: 0.7rem;
  }

  .metric-icon {
    width: 4.75rem;
    height: 4.75rem;
  }

  .volumetric-metric {
    gap: 0.7rem;
    padding-right: 0.7rem;
  }

  .chargeable-metric {
    padding: 1rem;
  }

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

  .courier-card {
    min-height: 15.5rem;
  }

  .courier-grid[data-category="domestic"] {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .site-header {
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.9rem 1rem;
  }

  .brand {
    gap: 0.45rem;
  }

  .brand-mark,
  .brand-mark .icon {
    width: 2.65rem;
    height: 2.65rem;
  }

  .brand-name {
    font-size: 1.62rem;
  }

  .brand-tagline {
    max-width: 11rem;
    font-size: 0.7rem;
    line-height: 1.25;
  }

  .header-actions {
    gap: 0.25rem;
  }

  .quiet-action,
  .icon-action {
    padding: 0.3rem;
  }

  .quiet-action .icon,
  .icon-action .icon {
    width: 1.3rem;
    height: 1.3rem;
  }

  .app-shell {
    width: min(100% - 1rem, 1180px);
    margin-top: 0.8rem;
  }

  .input-panel,
  .result-panel {
    padding: 1rem;
  }

  .field-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.55rem 0.75rem;
  }

  .field-helper {
    align-items: flex-start;
    font-size: 0.78rem;
  }

  .form-actions {
    align-items: stretch;
    flex-direction: column;
    margin-top: 0.2rem;
  }

  .primary-button {
    width: 100%;
  }

  .metric-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  .volumetric-metric {
    grid-column: 1 / -1;
    padding-right: 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding-bottom: 1rem;
  }

  .actual-metric {
    grid-column: 1;
    padding-left: 0;
  }

  .metric-arrow {
    display: none;
  }

  .chargeable-metric {
    grid-column: 2;
    min-height: 9rem;
  }

  .conversion-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.3rem;
  }

  .conversion-heading > p {
    text-align: left;
  }

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

  .metric-value {
    font-size: 1.85rem;
  }

  .chargeable-metric .metric-value {
    font-size: 2rem;
  }

  .formula-strip {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 0.35rem 0.6rem;
    padding: 0.75rem;
  }

  .factor-badge {
    width: 100%;
    margin-left: 0;
    text-align: center;
  }

  .section-tabs {
    grid-template-columns: 1fr;
  }

  .section-tab {
    justify-content: flex-start;
    min-height: 2.8rem;
    padding: 0 0.3rem;
  }

  .section-tab.active::after {
    right: 50%;
  }

  .courier-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.6rem;
    margin-top: 1rem;
  }

  .courier-grid[data-category="domestic"] {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .courier-card {
    min-height: 14.4rem;
    padding: 0.85rem 0.45rem 0.75rem;
  }

  .brand-badge {
    width: 100%;
    min-height: 3.25rem;
    max-width: 6rem;
    margin-bottom: 0.55rem;
  }

  .courier-card[data-courier="startrack"] .brand-badge,
  .courier-card[data-courier="maitex"] .brand-badge,
  .courier-card[data-courier="cti"] .brand-badge,
  .courier-card[data-courier="tls"] .brand-badge,
  .courier-card[data-courier="centurion"] .brand-badge,
  .courier-card[data-courier="tas-freight"] .brand-badge,
  .courier-card[data-courier="followmont"] .brand-badge {
    max-width: 7rem;
  }

  .courier-divisor {
    margin-top: 0.75rem;
    font-size: 0.95rem;
  }

  .details-panel,
  .notice-panel {
    padding: 0.9rem 1rem;
  }

  .details-heading p {
    white-space: normal;
  }

  .bottom-nav-inner {
    width: 100%;
    min-height: 4.2rem;
  }

  .bottom-nav-item {
    flex-direction: column;
    gap: 0.2rem;
    font-size: 0.68rem;
  }

  .bottom-nav-item .icon {
    width: 1.45rem;
    height: 1.45rem;
  }
}

@media (max-width: 410px) {
  .brand-tagline {
    max-width: 9rem;
  }

  .header-actions {
    gap: 0;
  }

  .metric-grid {
    gap: 0.75rem;
  }

  .metric-icon {
    width: 4rem;
    height: 4rem;
  }

  .metric-icon .icon {
    width: 2.4rem;
    height: 2.4rem;
  }

  .metric-label {
    font-size: 0.78rem;
  }

  .metric-value,
  .chargeable-metric .metric-value {
    font-size: 1.65rem;
  }

  .metric-formula,
  .chargeable-note {
    font-size: 0.75rem;
  }
}

.app-dialog {
  width: min(42rem, calc(100% - 2rem));
  max-width: calc(100% - 2rem);
  max-height: calc(100vh - 2rem);
  padding: 0;
  color: var(--navy);
  background: transparent;
  border: 0;
  overflow: visible;
}

.app-dialog::backdrop {
  background: rgba(12, 21, 52, 0.42);
  backdrop-filter: blur(2px);
}

.app-dialog.is-fallback-open {
  position: fixed;
  inset: 1rem;
  z-index: 50;
  display: flex;
  margin: auto;
}

.dialog-shell {
  display: flex;
  max-height: calc(100vh - 2rem);
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  box-shadow: 0 18px 60px rgba(15, 32, 59, 0.22);
  overflow: hidden;
}

.dialog-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 1.25rem;
  background: var(--cyan-wash);
  border-bottom: 1px solid var(--line);
}

.dialog-eyebrow {
  margin: 0 0 0.2rem;
  color: var(--cyan-deep);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.dialog-header h2 {
  margin: 0;
  color: var(--navy);
  font-size: 1.25rem;
  letter-spacing: -0.03em;
}

.dialog-close {
  display: grid;
  width: 2.2rem;
  height: 2.2rem;
  flex: 0 0 auto;
  place-items: center;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.4rem;
  line-height: 1;
}

.dialog-close:hover {
  color: var(--navy);
  border-color: var(--cyan);
}

.dialog-body {
  max-height: calc(100vh - 9rem);
  padding: 1.25rem;
  overflow-y: auto;
}

.dialog-stack {
  display: grid;
  gap: 0.85rem;
}

.dialog-lead,
.dialog-summary,
.dialog-note,
.dialog-status,
.dialog-empty {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.55;
}

.dialog-lead {
  color: var(--navy);
  font-weight: 650;
}

.dialog-summary {
  padding: 0.65rem 0.75rem;
  color: var(--navy);
  background: var(--cyan-soft);
  border-radius: 0.45rem;
  font-weight: 700;
}

.dialog-note {
  padding-top: 0.35rem;
  border-top: 1px solid var(--line);
  font-size: 0.76rem;
}

.dialog-list {
  display: grid;
  gap: 0.6rem;
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.55;
}

.dialog-list strong {
  color: var(--navy);
}

.dialog-error-list {
  color: var(--danger);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  color: var(--navy);
  font-size: 0.78rem;
  table-layout: fixed;
}

.compare-table th,
.compare-table td {
  padding: 0.62rem 0.45rem;
  border-bottom: 1px solid var(--line);
  overflow-wrap: anywhere;
  text-align: right;
  vertical-align: middle;
}

.compare-table th:first-child,
.compare-table td:first-child {
  width: 34%;
  text-align: left;
}

.compare-table thead th {
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.compare-table tbody th {
  font-weight: 750;
}

.compare-table tbody tr.is-current {
  background: var(--cyan-soft);
}

.compare-table tbody tr.is-current th,
.compare-table tbody tr.is-current td {
  border-bottom-color: rgba(0, 213, 219, 0.3);
}

.compare-table td strong {
  color: var(--cyan-deep);
  font-size: 0.88rem;
}

.compare-current {
  display: block;
  margin-top: 0.18rem;
  color: var(--cyan-deep);
  font-size: 0.64rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.history-list {
  display: grid;
  gap: 0.55rem;
  max-height: 22rem;
  overflow-y: auto;
}

.history-record {
  display: grid;
  width: 100%;
  gap: 0.3rem;
  padding: 0.75rem;
  color: var(--navy);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.55rem;
  cursor: pointer;
  text-align: left;
}

.history-record:hover {
  border-color: var(--cyan);
  background: var(--cyan-soft);
}

.history-record-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
}

.history-record-header strong {
  font-size: 0.9rem;
}

.history-record-date {
  color: var(--muted);
  font-size: 0.68rem;
  white-space: nowrap;
}

.history-record-summary {
  color: var(--muted);
  font-size: 0.76rem;
}

.history-record-result {
  color: var(--cyan-deep);
  font-size: 0.78rem;
  font-weight: 800;
}

.settings-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1rem;
  padding: 0;
  margin: 0;
  border: 0;
}

.settings-group legend {
  width: 100%;
  padding: 0;
  color: var(--navy);
  font-size: 0.78rem;
  font-weight: 800;
}

.settings-option {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--navy);
  font-size: 0.84rem;
  font-weight: 650;
}

.settings-option input {
  accent-color: var(--cyan-button);
}

.dialog-field-label {
  display: grid;
  gap: 0.35rem;
  color: var(--navy);
  font-size: 0.78rem;
  font-weight: 750;
}

.dialog-select {
  width: 100%;
  min-height: 2.65rem;
  padding: 0 0.65rem;
  color: var(--navy);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 0.45rem;
  cursor: pointer;
  font-size: 0.82rem;
}

.dialog-select:focus {
  border-color: var(--cyan);
  outline: none;
}

.dialog-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  padding-top: 0.25rem;
}

.dialog-actions .primary-button,
.dialog-actions .dialog-secondary-button,
.dialog-actions .dialog-danger-button {
  flex: 1 1 10rem;
}

.dialog-secondary-button,
.dialog-danger-button {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  justify-content: center;
  padding: 0.62rem 0.9rem;
  color: var(--navy);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 0.55rem;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 750;
}

.dialog-secondary-button:hover,
.dialog-danger-button:hover {
  border-color: var(--cyan);
}

.dialog-secondary-button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.dialog-danger-button {
  color: var(--danger);
}

:root[data-theme="dark"] .site-header {
  border-bottom-color: transparent;
}

:root[data-theme="dark"] .about-card {
  background: linear-gradient(135deg, #132f3a, #15303c 58%, #18333e);
}

:root[data-theme="dark"] .metric-icon {
  background: linear-gradient(145deg, #12323e, #16404a);
}

:root[data-theme="dark"] .chargeable-metric {
  background: linear-gradient(145deg, #12323e, #153b47);
}

:root[data-theme="dark"] .formula-strip,
:root[data-theme="dark"] .conversion-result {
  background: linear-gradient(90deg, #122d3a, #153743 62%, #183d49);
}

:root[data-theme="dark"] .courier-card,
:root[data-theme="dark"] .conversion-card {
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.2);
}

:root[data-theme="dark"] .app-dialog::backdrop {
  background: rgba(0, 0, 0, 0.62);
}

@media (max-width: 680px) {
  .app-dialog {
    width: calc(100% - 1rem);
    max-width: calc(100% - 1rem);
    max-height: calc(100vh - 1rem);
  }

  .dialog-shell {
    max-height: calc(100vh - 1rem);
  }

  .dialog-header,
  .dialog-body {
    padding: 0.95rem;
  }

  .dialog-body {
    max-height: calc(100vh - 7rem);
  }

  .history-record-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.15rem;
  }

  .dialog-actions > button,
  .dialog-stack > .primary-button,
  .dialog-stack > .dialog-secondary-button {
    width: 100%;
  }
}