/* ============================================================
   DIMWEIGHTCALC — SHARED STYLESHEET
   ============================================================ */

:root {
  --ink: #0a0a0a;
  --ink-soft: #1a1a1a;
  --paper: #f5f3ee;
  --paper-warm: #ebe8df;
  --rule: #d4cfc4;
  --accent: #c4452c;
  --accent-dark: #8a2a17;
  --green: #2d5a3d;
  --amber: #b8860b;
  --serif: 'Fraunces', Georgia, serif;
  --sans: 'Inter Tight', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(at 20% 0%, rgba(196, 69, 44, 0.04) 0%, transparent 50%),
    radial-gradient(at 80% 100%, rgba(45, 90, 61, 0.03) 0%, transparent 50%);
  min-height: 100vh;
}

a { color: inherit; }

/* === HEADER === */
header.site-header {
  border-bottom: 1px solid var(--rule);
  background: rgba(245, 243, 238, 0.92);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav {
  max-width: 1280px;
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
  text-decoration: none;
  color: var(--ink);
}

.brand-mark {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.02em;
  font-style: italic;
}

.brand-meta {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-soft);
  opacity: 0.55;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

nav ul { display: flex; gap: 32px; list-style: none; }
nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  opacity: 0.7;
  transition: opacity 0.2s;
}
nav a:hover, nav a.active { opacity: 1; }
nav a.active { color: var(--accent); }

/* === AD BANNER (Adsterra) === */
/* Reserves slot height to prevent CLS (Cumulative Layout Shift) when ads load.
   Desktop banner: 728x90, shown ≥769px. Mobile banner: 320x50, shown <769px. */
.ad-banner {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 12px 16px;
  background: rgba(10, 10, 10, 0.02);
  border-bottom: 1px solid var(--rule);
  overflow: hidden;
}

.ad-banner-inner {
  margin: 0 auto;
}

.ad-banner-inner.desktop {
  display: block;
  width: 728px;
  height: 90px;
  max-width: 100%;
}

.ad-banner-inner.mobile {
  display: none;
  width: 320px;
  height: 50px;
  max-width: 100%;
}

@media (max-width: 768px) {
  .ad-banner { padding: 8px 12px; }
  .ad-banner-inner.desktop { display: none; }
  .ad-banner-inner.mobile { display: block; }
}

/* Tiny "Ad" label appears subtly if the ad slot is empty (transparency for users) */
.ad-banner-inner:empty::before {
  content: "Advertisement";
  display: block;
  text-align: center;
  font-family: var(--mono);
  font-size: 9px;
  color: var(--ink-soft);
  opacity: 0.4;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding-top: 38px;
}
.ad-banner-inner.mobile:empty::before { padding-top: 18px; }

/* === LAYOUT === */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}

.narrow {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 32px;
}

.section-label {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-label::before {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--accent);
}

/* === TYPOGRAPHY === */
h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(40px, 6vw, 76px);
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}
h1 em {
  font-style: italic;
  font-weight: 300;
  color: var(--accent);
}

h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(32px, 4.5vw, 48px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 32px;
  max-width: 720px;
}
h2 em { font-style: italic; color: var(--accent); font-weight: 300; }

h3 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin-bottom: 14px;
  margin-top: 32px;
}

h4 {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 10px;
  margin-top: 24px;
}

p { line-height: 1.7; margin-bottom: 16px; color: var(--ink); }

.article-body p { font-size: 17px; color: var(--ink-soft); }
.article-body ul, .article-body ol { margin: 16px 0 24px 28px; }
.article-body li { margin-bottom: 8px; line-height: 1.65; }
.article-body strong { color: var(--ink); font-weight: 600; }
.article-body a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

/* Inline callout boxes */
.callout {
  background: var(--paper-warm);
  border-left: 3px solid var(--accent);
  padding: 20px 24px;
  margin: 28px 0;
  border-radius: 0 4px 4px 0;
}
.callout-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
  font-weight: 600;
}
.callout p { margin-bottom: 0; }

/* Inline code/formula */
.code-block {
  background: var(--ink);
  color: var(--paper);
  padding: 18px 22px;
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.7;
  margin: 16px 0 28px;
  overflow-x: auto;
}
.code-block .accent { color: #e89380; }
.code-block .num { color: #d4a544; font-weight: 600; }
.code-block .result { color: #7cb88a; font-weight: 600; }

/* === HERO === */
.hero {
  max-width: 1280px;
  margin: 0 auto;
  padding: 80px 32px 40px;
}

.hero-label {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.hero-label::before {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--accent);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 80px;
  align-items: end;
}

.hero p.lede {
  font-family: var(--serif);
  font-size: 20px;
  line-height: 1.4;
  max-width: 520px;
  color: var(--ink-soft);
  font-weight: 300;
}

.hero-stats {
  border-top: 1px solid var(--rule);
  padding-top: 32px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.stat-num {
  font-family: var(--serif);
  font-size: 42px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.02em;
}

.stat-label {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  opacity: 0.7;
  margin-top: 8px;
}

/* === CALCULATOR === */
.calculator-section {
  max-width: 1280px;
  margin: 80px auto 0;
  padding: 0 32px;
}

.calc-frame {
  background: #ffffff;
  color: var(--ink);
  border-radius: 6px;
  padding: 48px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--rule);
  box-shadow:
    0 1px 2px rgba(10, 10, 10, 0.03),
    0 8px 24px rgba(10, 10, 10, 0.04);
}

.calc-frame::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent) 30%, transparent 100%);
}

.calc-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--rule);
}

.calc-title {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.calc-id {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-soft);
  opacity: 0.45;
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 48px;
}

.input-block { display: flex; flex-direction: column; gap: 28px; }

.input-group { display: flex; flex-direction: column; gap: 10px; }

.input-label {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  opacity: 0.65;
  font-weight: 500;
}

.shipment-toggle {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 4px;
}

.ship-btn {
  background: transparent;
  color: var(--ink-soft);
  border: none;
  padding: 10px 8px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  cursor: pointer;
  opacity: 0.65;
  transition: all 0.2s;
  border-radius: 3px;
  font-weight: 500;
  text-transform: uppercase;
  text-align: center;
  line-height: 1.3;
}
.ship-btn:hover { opacity: 0.95; }
.ship-btn.active {
  background: var(--ink);
  color: var(--paper);
  opacity: 1;
}

.unit-toggle {
  display: flex;
  background: var(--paper-warm);
  border-radius: 4px;
  padding: 3px;
  width: fit-content;
  border: 1px solid var(--rule);
}

.unit-btn {
  background: transparent;
  color: var(--ink-soft);
  border: none;
  padding: 8px 18px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  cursor: pointer;
  opacity: 0.6;
  transition: all 0.2s;
  border-radius: 3px;
  font-weight: 500;
}
.unit-btn:hover { opacity: 0.85; }
.unit-btn.active {
  background: var(--accent);
  color: #ffffff;
  opacity: 1;
  box-shadow: 0 1px 3px rgba(196, 69, 44, 0.25);
}

.dimensions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.dim-input {
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  color: var(--ink);
  padding: 16px;
  font-family: var(--mono);
  font-size: 18px;
  border-radius: 4px;
  transition: all 0.2s;
  text-align: center;
  font-weight: 500;
  width: 100%;
}
.dim-input:hover { border-color: #b8b2a3; }
.dim-input:focus {
  outline: none;
  border-color: var(--accent);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(196, 69, 44, 0.1);
}
.dim-input::placeholder { color: var(--ink-soft); opacity: 0.3; }

.dim-input-wrapper { position: relative; }
.dim-input-label {
  position: absolute;
  top: -7px;
  left: 12px;
  background: #ffffff;
  padding: 0 6px;
  font-family: var(--mono);
  font-size: 9px;
  color: var(--accent);
  opacity: 0.75;
  letter-spacing: 0.1em;
  font-weight: 600;
}

.weight-input {
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  color: var(--ink);
  padding: 16px 18px;
  font-family: var(--mono);
  font-size: 18px;
  border-radius: 4px;
  width: 100%;
  font-weight: 500;
  transition: all 0.2s;
}
.weight-input:hover { border-color: #b8b2a3; }
.weight-input::placeholder { color: var(--ink-soft); opacity: 0.3; }
.weight-input:focus {
  outline: none;
  border-color: var(--accent);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(196, 69, 44, 0.1);
}

.carrier-focus-select {
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  color: var(--ink);
  padding: 14px 16px;
  font-family: var(--mono);
  font-size: 13px;
  border-radius: 4px;
  width: 100%;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23c4452c' d='M2 4l4 4 4-4z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
  font-weight: 500;
  transition: all 0.2s;
}
.carrier-focus-select:hover { border-color: #b8b2a3; }
.carrier-focus-select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(196, 69, 44, 0.1);
}

.calculate-btn {
  background: var(--ink);
  color: var(--paper);
  border: none;
  padding: 18px 32px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
  margin-top: 8px;
  border-radius: 4px;
  font-weight: 500;
  box-shadow: 0 2px 4px rgba(10, 10, 10, 0.08);
}
.calculate-btn:hover {
  background: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(196, 69, 44, 0.25);
}

/* === RESULTS === */
.results-block {
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 32px;
  min-height: 480px;
  display: flex;
  flex-direction: column;
}

.results-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  text-align: center;
  opacity: 0.55;
}

.results-empty-icon {
  width: 56px;
  height: 56px;
  border: 1px dashed var(--ink-soft);
  border-radius: 50%;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-size: 28px;
  font-style: italic;
  color: var(--accent);
  opacity: 0.7;
}

.results-empty p {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  max-width: 260px;
  color: var(--ink-soft);
  line-height: 1.5;
}

.oversize-warning {
  background: rgba(184, 134, 11, 0.08);
  border: 1px solid rgba(184, 134, 11, 0.3);
  border-radius: 4px;
  padding: 12px 16px;
  margin-bottom: 20px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.oversize-icon {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 600;
  color: var(--amber);
  font-size: 18px;
  flex-shrink: 0;
  line-height: 1;
  margin-top: 1px;
}

.oversize-text {
  font-size: 12px;
  line-height: 1.5;
  color: var(--ink);
}
.oversize-text strong { color: var(--amber); }

.focused-carrier-card {
  background: linear-gradient(135deg, var(--ink) 0%, #1f1f1f 100%);
  color: var(--paper);
  padding: 28px 32px;
  border-radius: 6px;
  margin-bottom: 28px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--ink);
}

.focused-carrier-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
}

.focused-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(245, 243, 238, 0.12);
}

.focused-name {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.focused-service {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.55;
  margin-top: 4px;
}

.focused-result { text-align: right; }

.focused-result-label {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  opacity: 0.5;
  margin-bottom: 4px;
}

.focused-result-value {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.focused-result-value .unit {
  font-family: var(--mono);
  font-size: 13px;
  opacity: 0.5;
  margin-left: 4px;
}

.formula-display {
  background: rgba(245, 243, 238, 0.04);
  border: 1px solid rgba(245, 243, 238, 0.08);
  border-radius: 4px;
  padding: 16px 20px;
  margin-bottom: 12px;
}

.formula-display-label {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  opacity: 0.5;
  margin-bottom: 8px;
}

.formula-display-code {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--paper);
  opacity: 0.95;
  line-height: 1.6;
  word-break: break-word;
}

.formula-display-code .accent { color: #e89380; }
.formula-display-code .num { color: #d4a544; font-weight: 600; }
.formula-display-code .result { color: #7cb88a; font-weight: 600; }

.focused-notes {
  font-family: var(--sans);
  font-size: 12px;
  line-height: 1.5;
  opacity: 0.7;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed rgba(245, 243, 238, 0.1);
}

/* ===== Result action buttons (Copy / PDF / Share) ===== */
.result-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  padding: 10px 12px;
  background: rgba(10, 10, 10, 0.03);
  border: 1px solid var(--rule);
  border-radius: 4px;
  flex-wrap: wrap;
}

.result-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink);
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
}

.result-action-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
}

.result-action-btn:active { transform: translateY(1px); }

.result-action-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.result-action-btn .action-icon {
  font-size: 14px;
  line-height: 1;
  opacity: 0.95;
}

.result-action-toast {
  margin-left: auto;
  padding: 5px 12px;
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--paper);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.2s, transform 0.2s;
  background: #2d5a3d;
  border-radius: 3px;
  pointer-events: none;
}

.result-action-toast.toast-visible {
  opacity: 1;
  transform: translateX(0);
}

.result-action-toast.toast-error {
  background: var(--accent);
}

@media (max-width: 600px) {
  .result-actions { gap: 6px; padding: 8px; }
  .result-action-btn { padding: 7px 12px; font-size: 10px; }
  .result-action-toast {
    width: 100%;
    margin-left: 0;
    margin-top: 4px;
    text-align: center;
  }
}

.package-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  border-radius: 4px;
  margin-bottom: 24px;
  overflow: hidden;
}

.metric-cell {
  background: #ffffff;
  padding: 14px 16px;
}

.metric-label {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.55;
  color: var(--ink-soft);
  margin-bottom: 4px;
  font-weight: 500;
}

.metric-value {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.metric-value .unit {
  opacity: 0.5;
  font-weight: 400;
  margin-left: 3px;
  font-size: 11px;
}

.table-head-v2 {
  display: grid;
  grid-template-columns: 1.5fr 0.9fr 0.9fr 0.7fr;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  opacity: 0.55;
  color: var(--ink-soft);
  font-weight: 500;
}
.table-head-v2 div:not(:first-child) { text-align: right; }

.carriers-list { display: flex; flex-direction: column; gap: 1px; }

.carrier-row-v2 {
  display: grid;
  grid-template-columns: 1.5fr 0.9fr 0.9fr 0.7fr;
  gap: 12px;
  padding: 18px 0;
  align-items: center;
  border-bottom: 1px solid var(--rule);
  transition: background 0.2s;
}
.carrier-row-v2:last-child { border-bottom: none; }
.carrier-row-v2.is-focused {
  background: rgba(196, 69, 44, 0.04);
  margin: 0 -16px;
  padding-left: 16px;
  padding-right: 16px;
  border-radius: 3px;
}

.carrier-name {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
}

.carrier-divisor {
  font-family: var(--mono);
  font-size: 10px;
  opacity: 0.5;
  letter-spacing: 0.05em;
  display: block;
  margin-top: 2px;
  color: var(--ink-soft);
}

.carrier-dim-num {
  font-family: var(--mono);
  font-size: 15px;
  text-align: right;
  color: var(--ink);
  font-weight: 500;
}
.carrier-dim-num.muted { color: var(--ink-soft); opacity: 0.5; }

.carrier-bill-num {
  font-family: var(--mono);
  font-size: 16px;
  text-align: right;
  font-weight: 700;
  color: var(--ink);
}

.carrier-tag {
  text-align: right;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 10px;
  border-radius: 3px;
  display: inline-block;
  margin-left: auto;
  font-weight: 600;
}

.tag-best {
  background: rgba(45, 90, 61, 0.12);
  color: var(--green);
  border: 1px solid rgba(45, 90, 61, 0.2);
}
.tag-dim {
  background: rgba(196, 69, 44, 0.1);
  color: var(--accent-dark);
  border: 1px solid rgba(196, 69, 44, 0.2);
}
.tag-actual {
  background: rgba(10, 10, 10, 0.05);
  color: var(--ink-soft);
  border: 1px solid var(--rule);
}
.tag-exempt {
  background: rgba(184, 134, 11, 0.1);
  color: var(--amber);
  border: 1px solid rgba(184, 134, 11, 0.25);
}

.row-meta-link {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 0.05em;
  display: inline-block;
  margin-top: 4px;
  opacity: 0.75;
  transition: opacity 0.2s;
}
.row-meta-link:hover { opacity: 1; text-decoration: underline; }

/* === CARRIER GRID / INDEX === */
.carrier-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin: 40px 0;
}

.carrier-card {
  background: #ffffff;
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 28px;
  text-decoration: none;
  color: var(--ink);
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.carrier-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(196, 69, 44, 0.08);
}

.carrier-card-region {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}

.carrier-card-name {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.carrier-card-divisor {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-soft);
  display: flex;
  gap: 12px;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed var(--rule);
}

.carrier-card-divisor span:first-child { font-weight: 600; color: var(--ink); }

/* === FREE TOOLS PAGE === */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.tool-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: #ffffff;
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 22px;
  text-decoration: none;
  color: var(--ink);
  transition: all 0.2s;
}

.tool-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(196, 69, 44, 0.08);
}

.tool-card-name {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.tool-card-arrow {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  opacity: 0.7;
  margin-left: 4px;
}

.tool-card:hover .tool-card-arrow { opacity: 1; }

.tool-card-desc {
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink-soft);
  flex-grow: 1;
}

.tool-card-domain {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--accent);
  letter-spacing: 0.04em;
  text-transform: lowercase;
  margin-top: auto;
  padding-top: 8px;
  border-top: 1px dashed var(--rule);
}

/* === ARTICLE LIST === */
.article-list { margin: 40px 0; }

.article-card {
  display: block;
  padding: 28px 0;
  border-bottom: 1px solid var(--rule);
  text-decoration: none;
  color: var(--ink);
  transition: padding 0.2s;
}

.article-card:hover { padding-left: 8px; }
.article-card:hover .article-card-title { color: var(--accent); }

.article-card-meta {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  opacity: 0.65;
  margin-bottom: 8px;
}

.article-card-title {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
  transition: color 0.2s;
}

.article-card-excerpt {
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.55;
  max-width: 720px;
}

/* === ARTICLE BODY === */
.article-header {
  max-width: 760px;
  margin: 60px auto 48px;
  padding: 0 32px;
}

.article-meta-top {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.article-header h1 {
  font-size: clamp(36px, 5vw, 56px);
  margin-bottom: 20px;
}

.article-header .lede {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.4;
  color: var(--ink-soft);
  font-weight: 300;
  font-style: italic;
}

.article-body {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 32px 80px;
}

/* === EXPLAINER === */
.explainer {
  max-width: 1280px;
  margin: 120px auto 0;
  padding: 0 32px;
}

.explainer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 64px;
  margin-bottom: 64px;
}

.explainer-item {
  border-top: 1px solid var(--rule);
  padding-top: 24px;
}

.explainer-num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 16px;
}

.explainer-item h3 {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 500;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin-top: 0;
}

.explainer-item p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-soft);
  opacity: 0.85;
}

.formula-block {
  background: var(--ink);
  color: var(--paper);
  padding: 48px;
  border-radius: 4px;
  text-align: center;
  margin: 64px 0;
}

.formula-block .formula {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(24px, 3.5vw, 40px);
  font-weight: 300;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.formula-block .formula em {
  color: var(--accent);
  font-weight: 400;
}

.formula-caption {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  opacity: 0.5;
  margin-top: 24px;
}

/* === DIVISOR TABLE === */
.divisor-table {
  background: var(--paper-warm);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--rule);
  margin: 32px 0;
}
.divisor-table table { width: 100%; border-collapse: collapse; }
.divisor-table th {
  text-align: left;
  padding: 18px 24px;
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
  color: var(--ink-soft);
  font-weight: 500;
}
.divisor-table td {
  padding: 16px 24px;
  border-bottom: 1px solid var(--rule);
  font-size: 14px;
}
.divisor-table tr:last-child td { border-bottom: none; }
.divisor-table tr:hover td { background: rgba(196, 69, 44, 0.04); }
.divisor-table .carrier-cell { font-family: var(--serif); font-weight: 500; font-size: 16px; }
.divisor-table .div-cell { font-family: var(--mono); font-weight: 600; color: var(--accent); }

/* === FAQ === */
.faq-section {
  max-width: 920px;
  margin: 120px auto 0;
  padding: 0 32px;
}

.faq-item {
  border-top: 1px solid var(--rule);
  padding: 32px 0;
}

.faq-item:last-of-type { border-bottom: 1px solid var(--rule); }

.faq-q {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-q::after {
  content: '+';
  font-family: var(--mono);
  font-size: 24px;
  color: var(--accent);
  transition: transform 0.3s;
  margin-left: 24px;
  flex-shrink: 0;
}

.faq-item.open .faq-q::after { transform: rotate(45deg); }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, margin-top 0.3s;
  color: var(--ink-soft);
  line-height: 1.6;
  font-size: 15px;
}

.faq-item.open .faq-a {
  max-height: 800px;
  margin-top: 12px;
}

.faq-a p { font-size: 15px; color: var(--ink-soft); }

/* === SECTION SPACING === */
.section { padding: 80px 0; }
.section-tight { padding: 40px 0; }

/* === FOOTER === */
footer.site-footer {
  margin-top: 160px;
  background: var(--ink);
  color: var(--paper);
  padding: 80px 32px 32px;
}

.footer-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 64px;
  padding-bottom: 64px;
  border-bottom: 1px solid rgba(245, 243, 238, 0.15);
}

.footer-brand-block .brand-mark {
  font-size: 32px;
  margin-bottom: 16px;
  display: block;
}

.footer-brand-block p {
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.5;
  opacity: 0.7;
  max-width: 320px;
  font-style: italic;
  font-weight: 300;
  color: var(--paper);
}

.footer-col h4 {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  opacity: 0.5;
  margin-bottom: 20px;
  font-weight: 500;
  margin-top: 0;
  color: var(--paper);
}

.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 12px; }
.footer-col a {
  color: var(--paper);
  text-decoration: none;
  font-size: 14px;
  opacity: 0.7;
  transition: opacity 0.2s;
}
.footer-col a:hover { opacity: 1; }

.footer-bottom {
  max-width: 1280px;
  margin: 32px auto 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 11px;
  opacity: 0.4;
  letter-spacing: 0.05em;
}

/* === CTA BLOCK === */
.cta-block {
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  padding: 48px;
  border-radius: 6px;
  text-align: center;
  margin: 64px 0;
}

.cta-block h3 {
  font-size: 28px;
  margin-top: 0;
  margin-bottom: 12px;
}

.cta-block p {
  max-width: 480px;
  margin: 0 auto 24px;
  color: var(--ink-soft);
}

.cta-btn {
  display: inline-block;
  background: var(--ink);
  color: var(--paper);
  padding: 14px 28px;
  border-radius: 4px;
  text-decoration: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 500;
  transition: all 0.2s;
}

.cta-btn:hover {
  background: var(--accent);
  transform: translateY(-1px);
}

/* === RESPONSIVE === */
@media (max-width: 900px) {
  .hero { padding: 48px 24px 32px; }
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .calc-frame { padding: 28px 20px; }
  .calc-grid { grid-template-columns: 1fr; gap: 32px; }
  .calc-header { flex-direction: column; gap: 8px; align-items: flex-start; }
  .calculator-section { padding: 0 16px; }
  .explainer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-bottom { flex-direction: column; gap: 12px; }
  nav ul { gap: 16px; }
  nav a { font-size: 12px; }
  .nav { padding: 14px 20px; }
  .hero-stats { gap: 20px; }
  .stat-num { font-size: 28px; }
  .divisor-table { font-size: 12px; }
  .divisor-table th, .divisor-table td { padding: 12px 14px; }
  .divisor-table .carrier-cell { font-size: 14px; }
  .formula-block { padding: 32px 20px; }
  .shipment-toggle { grid-template-columns: 1fr; gap: 4px; }
  .ship-btn { padding: 12px; font-size: 11px; }
  .focused-carrier-card { padding: 20px; }
  .focused-head { flex-direction: column; gap: 12px; }
  .focused-result { text-align: left; }
  .focused-name { font-size: 20px; }
  .focused-result-value { font-size: 26px; }
  .formula-display { padding: 12px 14px; }
  .formula-display-code { font-size: 11px; }
  .package-metrics { grid-template-columns: repeat(2, 1fr); }
  .table-head-v2, .carrier-row-v2 { grid-template-columns: 1.3fr 0.8fr 0.8fr 0.6fr; gap: 8px; }
  .carrier-dim-num { font-size: 13px; }
  .carrier-bill-num { font-size: 14px; }
  .container, .narrow { padding: 0 20px; }
  .article-header, .article-body { padding-left: 20px; padding-right: 20px; }
  .article-card-title { font-size: 22px; }
  .cta-block { padding: 32px 20px; }
}

/* === ANIMATIONS === */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero > div { animation: fadeUp 0.8s ease-out backwards; }
.hero > div:nth-child(2) { animation-delay: 0.15s; }