:root {
  color-scheme: light;
  --ink-950: #f7fbf7;
  --ink-900: #ffffff;
  --ink-850: #f4f9f5;
  --ink-800: #eaf4ed;
  --line: #d7e5dc;
  --line-strong: #c8dccf;
  --paper: #18352b;
  --paper-muted: #5f746b;
  --jade: #3f9b70;
  --jade-dark: #236b50;
  --gold: #78a88d;
  --gold-soft: #236b50;
  --danger: #b94a4a;
  --shadow: 0 16px 42px rgba(35, 76, 57, 0.08);
  font-family:
    Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html { min-width: 320px; background: #eef6f0; }

.exp-page-document {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--paper);
  background: radial-gradient(circle at 12% 0, rgba(69, 156, 111, .09), transparent 34rem), linear-gradient(180deg, #f7fbf7, #eef6f0);
}

button,
input,
select {
  font: inherit;
}

button,
select {
  cursor: pointer;
}

.site-header {
  width: min(1240px, calc(100% - 40px));
  min-height: 74px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 22px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: inherit;
  text-decoration: none;
}

.brand-logo {
  position: relative;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  overflow: hidden;
  background: #fff;
  border: 1px solid #b9dac7;
  border-radius: 12px;
  box-shadow: 3px 3px 0 #cfe7d7;
}

.brand-logo img {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 140%;
  height: 140%;
  object-fit: cover;
  transform: translate(-50%, -50%);
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 1.2rem;
  letter-spacing: 0.08em;
}

.primary-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
}

.primary-nav a {
  flex-shrink: 0;
  white-space: nowrap;
  padding: 10px 11px;
  color: #60776d;
  border-bottom: 2px solid transparent;
  font-size: 0.82rem;
  text-decoration: none;
}

.primary-nav a:hover {
  color: var(--jade-dark);
}

.primary-nav a.is-active {
  color: #194f3b;
  border-bottom-color: var(--jade);
  font-weight: 700;
}

.brand small {
  margin-top: 3px;
  color: #71877e;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
}

.status-pill,
.muted-label {
  color: #71877e;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
}

.status-pill {
  justify-self: end;
  padding: 8px 12px;
  color: var(--jade-dark);
  background: #e8f4ec;
  border: 1px solid #cce1d4;
  border-radius: 999px;
}

main {
  width: min(1240px, calc(100% - 40px));
  margin: 0 auto;
}

.intro { display: flex; align-items: baseline; gap: 14px; padding: 18px 0 14px; text-align: left; }

.eyebrow,
.section-kicker {
  margin: 0 0 10px;
  color: var(--jade);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.intro .eyebrow {
  display: none;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  max-width: none;
  margin-bottom: 0;
  color: #194f3b;
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0;
  white-space: nowrap;
}

.intro-copy {
  max-width: 100%;
  margin-bottom: 0;
  overflow-wrap: anywhere;
  color: #63786f;
  font-size: 0.88rem;
  line-height: 1.5;
  white-space: normal;
}

.intro-copy::-webkit-scrollbar {
  display: none;
}

.calculator-shell { padding: clamp(18px, 2.4vw, 28px); background: white; border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--shadow); }

.gem-selector {
  min-width: 0;
  margin: 0 0 18px;
  padding: 0 0 16px;
  border: 0;
  border-bottom: 1px solid var(--line);
}

.gem-selector-heading {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 9px;
}

.gem-selector-title {
  color: #5f746b;
  font-size: 0.82rem;
  font-weight: 700;
}

.gem-options,
.choice-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.gem-options {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
}

.gem-option,
.choice-option {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 38px;
  padding: 0 12px;
  color: #5c756a;
  background: var(--ink-850);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
}

.gem-option {
  width: 100%;
  min-width: 0;
  justify-content: center;
  padding: 0 10px;
}

.gem-option:hover {
  color: var(--jade-dark);
  border-color: var(--jade);
}

.gem-option[aria-pressed="true"] {
  color: white;
  background: var(--jade-dark);
  border-color: var(--jade-dark);
  box-shadow: none;
}

.choice-option:hover {
  color: var(--jade-dark);
  border-color: var(--jade);
}

.choice-option[aria-pressed="true"] {
  color: white;
  background: var(--jade-dark);
  border-color: var(--jade-dark);
  box-shadow: none;
}

.gem-option-marker,
.choice-option-marker {
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  border-radius: 50%;
}

.gem-option-marker {
  background: var(--gem-color);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--gem-color) 16%, transparent);
}

.choice-option-marker {
  background: var(--choice-color);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--choice-color) 16%, transparent);
}

.embedding-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  grid-column: -2 / -1;
  width: 100%;
  min-width: 0;
  min-height: 38px;
  padding: 0 10px;
  color: #5c756a;
  text-align: center;
  background: var(--ink-850);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
}

.embedding-toggle:hover {
  color: var(--jade-dark);
  border-color: var(--jade);
}

.embedding-toggle[aria-pressed="true"] {
  color: white;
  background: var(--jade-dark);
  border-color: var(--jade-dark);
  box-shadow: none;
}

.embedding-toggle:disabled {
  color: #879b92;
  background: #eef4f0;
  border-color: var(--line);
  box-shadow: none;
  cursor: not-allowed;
  opacity: 0.62;
}

.embedding-toggle:disabled:hover {
  color: #60777c;
  border-color: var(--line);
}

.embedding-toggle strong {
  font-size: 0.86rem;
}

.controls {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  align-items: end;
}

.field-group label {
  display: block;
  margin-bottom: 9px;
  color: #5f746b;
  font-size: 0.82rem;
  font-weight: 700;
}

.select-wrap,
.number-input {
  height: 52px;
  background: var(--ink-950);
  border: 1px solid var(--line-strong);
  border-radius: 11px;
  overflow: hidden;
}

.money-input {
  display: grid;
  grid-template-columns: 1fr 48px;
  height: 52px;
  color: var(--paper);
  background: var(--ink-950);
  border: 1px solid var(--line-strong);
  border-radius: 11px;
  overflow: hidden;
}

.money-input input {
  min-width: 0;
  padding: 0 16px;
  color: var(--paper);
  background: transparent;
  border: 0;
  outline: 0;
  appearance: textfield;
}

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

.money-input span {
  display: grid;
  place-items: center;
  color: var(--jade-dark);
  border-left: 1px solid var(--line);
  font-size: 0.82rem;
}

.money-input-unit-wide {
  grid-template-columns: 1fr 62px;
}

.money-input-unit-cbg {
  grid-template-columns: 1fr 88px;
}

.select-wrap {
  position: relative;
}

.select-wrap::after {
  content: "⌄";
  position: absolute;
  top: 50%;
  right: 16px;
  color: var(--jade);
  pointer-events: none;
  transform: translateY(-55%);
}

select {
  width: 100%;
  height: 100%;
  padding: 0 44px 0 16px;
  color: var(--paper);
  background: transparent;
  border: 0;
  outline: 0;
  appearance: none;
}

.number-input {
  display: grid;
  grid-template-columns: 48px 1fr 48px;
}

.number-input button {
  color: var(--jade-dark);
  background: transparent;
  border: 0;
}

.number-input button:hover {
  background: #e7f3eb;
}

.number-input input {
  min-width: 0;
  color: var(--paper);
  text-align: center;
  background: transparent;
  border: 0;
  border-right: 1px solid var(--line);
  border-left: 1px solid var(--line);
  outline: 0;
  appearance: textfield;
}

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

button:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(63, 155, 112, .34);
  outline-offset: 3px;
}

.assumption-note {
  display: flex;
  gap: 10px;
  margin: 16px 0 0;
  padding: 9px 12px;
  color: #667c72;
  background: var(--ink-850);
  border: 1px solid var(--line);
  border-left: 3px solid var(--jade);
  border-radius: 10px;
  font-size: 0.82rem;
  line-height: 1.6;
}

.assumption-note span {
  color: var(--jade-dark);
}

.assumption-note p {
  margin-bottom: 0;
}

.summary-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr 1.3fr 1fr 1fr;
  gap: 10px;
  margin: 20px 0 0;
  background: transparent;
}

.summary-card {
  min-width: 0;
  padding: 17px;
  background: var(--ink-850);
  border: 1px solid var(--line);
  border-radius: 14px;
}

.summary-card-primary {
  background: #e5f3e9;
}

.summary-card-cost {
  background: #f4f8f5;
}

.summary-card-rmb {
  background: #edf6f0;
}

.summary-card p {
  margin-bottom: 8px;
  color: #71877e;
  font-size: 0.78rem;
}

.summary-card strong {
  display: inline;
  margin-right: 8px;
  color: var(--jade-dark);
  font-family: "Georgia", "Times New Roman", serif;
  font-size: clamp(1.65rem, 4vw, 2.55rem);
  font-variant-numeric: tabular-nums;
}

.summary-card span {
  color: #71877e;
  font-size: 0.8rem;
}

.result-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.82fr) minmax(480px, 1.65fr);
  gap: 20px;
}

.panel {
  min-width: 0;
  background: white;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
}

.panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 22px;
  border-bottom: 1px solid var(--line);
}

.panel-heading h2,
.rules-heading h2 {
  margin-bottom: 0;
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 1.5rem;
}

.level-seal {
  display: grid;
  width: 46px;
  aspect-ratio: 1;
  place-items: center;
  color: var(--jade-dark);
  background: var(--ink-850);
  border: 1px solid #b9d7c5;
  border-radius: 50%;
  font-family: Georgia, serif;
  font-size: 1.1rem;
}

.recipe-list {
  display: grid;
  gap: 1px;
  background: var(--line);
}

.recipe-item {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 18px 22px;
  background: white;
}

.gem-level {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
}

.gem-level::before {
  content: "◆";
  color: var(--jade);
  font-size: 0.8rem;
}

.recipe-count {
  color: var(--jade-dark);
  font-family: Georgia, serif;
  font-size: 1.3rem;
}

.recipe-empty {
  padding: 32px 22px;
  color: #667c72;
  line-height: 1.7;
}

.table-wrap {
  max-height: 430px;
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 15px 20px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

th {
  position: sticky;
  top: 0;
  z-index: 1;
  color: #667c72;
  background: var(--ink-850);
  font-size: 0.74rem;
  letter-spacing: 0.05em;
}

td {
  color: #425d51;
  font-size: 0.88rem;
  line-height: 1.6;
}

td:nth-child(2) {
  color: var(--jade-dark);
  font-family: Georgia, serif;
  font-size: 1rem;
  font-variant-numeric: tabular-nums;
}

tbody tr:last-child td {
  border-bottom: 0;
}

.empty-row td {
  padding: 32px 20px;
  color: #667c72;
  text-align: center;
}

.rules-section {
  padding: 42px 0 24px;
}

.rules-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 24px;
}

.rules-heading > p {
  max-width: 520px;
  margin-bottom: 0;
  color: #667c72;
  font-size: 0.86rem;
  line-height: 1.7;
  text-align: right;
}

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

.rule-card {
  min-width: 0;
  padding: 22px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 14px;
}

.rule-card strong {
  display: block;
  margin-bottom: 12px;
  color: var(--jade-dark);
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 1.35rem;
}

.rule-card p {
  margin-bottom: 0;
  color: #667c72;
  font-size: 0.84rem;
  line-height: 1.7;
}

footer {
  width: min(1240px, calc(100% - 40px));
  margin: 40px auto 0;
  padding: 24px 0 40px;
  color: #71877e;
  border-top: 1px solid var(--line);
  font-size: 0.76rem;
}

footer p {
  margin-bottom: 0;
}

@media (max-width: 1100px) {
  .gem-options {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

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

@media (max-width: 860px) {
  .gem-options {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .intro {
    grid-template-columns: 1fr;
    gap: 6px;
  }

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

  .summary-card-primary {
    grid-column: auto;
  }

}

@media (max-width: 560px) {
  .site-header,
  main,
  footer {
    width: min(100% - 24px, 1180px);
  }

  .site-header {
    grid-template-columns: 1fr;
    gap: 8px;
    min-height: 72px;
    padding: 14px 0;
  }

  .status-pill {
    display: none;
  }

  .primary-nav {
    justify-content: flex-start;
    overflow-x: auto;
  }

  .primary-nav a:first-child {
    padding-left: 0;
  }

  .intro {
    padding: 18px 0 14px;
  }

  h1 {
    font-size: clamp(1.65rem, 8vw, 2.25rem);
  }

  .calculator-shell {
    padding: 16px;
  }

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

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

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

  .summary-card-primary {
    grid-column: auto;
  }

}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}

.exp-controls,
.exp-summary,
.potential-controls,
.potential-summary,
.pet-training-controls {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.character-training-controls {
  align-items: start;
}

.exp-summary,
.potential-summary {
  max-width: 760px;
}

.exp-exact,
.potential-exact,
.training-exact {
  margin: 14px 0 0;
  color: #667c72;
  font-size: 0.78rem;
}

.exp-exact span,
.potential-exact span,
.training-exact span {
  color: var(--paper);
  font-family: "Georgia", "Times New Roman", serif;
  font-variant-numeric: tabular-nums;
}

.assumption-note a {
  color: var(--gold-soft);
  text-underline-offset: 3px;
}

.assumption-note a:hover {
  color: var(--paper);
}

@media (max-width: 560px) {
  .exp-controls,
  .exp-summary,
  .potential-controls,
  .potential-summary,
  .pet-training-controls {
    grid-template-columns: 1fr;
  }
}

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

.sect-summary,
.pet-training-summary {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.sect-exact {
  margin: 14px 0 0;
  color: #667c72;
  font-size: 0.78rem;
}

.sect-exact span {
  color: var(--paper);
  font-family: "Georgia", "Times New Roman", serif;
  font-variant-numeric: tabular-nums;
}

@media (max-width: 860px) {
  .sect-summary,
  .pet-training-summary {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 560px) {
  .sect-controls,
  .sect-summary,
  .pet-training-summary {
    grid-template-columns: 1fr;
  }
}

.calc-block-title {
  margin: 34px 0 16px;
  scroll-margin-top: 24px;
  font-family: inherit;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--jade-dark);
}

.exp-page-layout {
  display: grid;
  grid-template-columns: 182px minmax(0, 1fr);
  gap: clamp(22px, 3vw, 36px);
  align-items: start;
}

.module-nav {
  position: sticky;
  top: 24px;
}

.module-nav-panel {
  padding: 8px;
  background: rgba(244, 250, 246, .96);
  border: 1px solid var(--line);
  border-radius: 12px;
  backdrop-filter: blur(12px);
}

.module-nav-title {
  margin: 0 14px 10px;
  color: #71877e;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.module-nav-list {
  display: grid;
  gap: 4px;
}

.module-nav-list a {
  display: grid;
  grid-template-columns: 28px 1fr;
  align-items: center;
  min-height: 42px;
  padding: 0 12px;
  color: #61786e;
  border: 1px solid transparent;
  border-radius: 8px;
  text-decoration: none;
  transition:
    color 160ms ease,
    background-color 160ms ease,
    border-color 160ms ease;
}

.module-nav-list a > span {
  color: #7d9188;
  font-family: "Georgia", "Times New Roman", serif;
  font-size: 0.68rem;
  font-variant-numeric: tabular-nums;
}

.module-nav-list a:hover {
  color: var(--jade-dark);
  background: white;
}

.module-nav-list a.is-active {
  color: white;
  background: var(--jade-dark);
  border-color: var(--jade-dark);
}

.module-nav-list a.is-active > span {
  color: #cde6d7;
}

.exp-modules {
  min-width: 0;
}

.exp-modules > .calc-block-title:first-child {
  margin-top: 0;
}

.calculator-shell + .calculator-shell {
  margin-top: 0;
}

.vital-controls {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
}

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

.vital-exact {
  margin: 14px 0 0;
  color: #667c72;
  font-size: 0.78rem;
  line-height: 1.6;
}

.field-label {
  display: block;
  margin-bottom: 9px;
  color: #5f746b;
  font-size: 0.82rem;
  font-weight: 700;
}

.number-input:has(input:disabled) {
  opacity: 0.55;
}

.number-input:has(input:disabled) button {
  cursor: not-allowed;
  color: #60777c;
}

@media (max-width: 560px) {
  .vital-controls,
  .vital-summary {
    grid-template-columns: 1fr;
  }

}

@media (max-width: 1100px) {
  .exp-page-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  .module-nav {
    top: 0;
    z-index: 10;
    margin: 0 -1px;
    padding: 8px 0;
    background: rgba(247, 251, 247, .97);
  }

  .module-nav-panel {
    padding: 0;
    border: 1px solid var(--line-strong);
  }

  .module-nav-title {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }

  .module-nav-list {
    display: flex;
    overflow-x: auto;
    scrollbar-width: thin;
  }

  .module-nav-list a {
    grid-template-columns: 24px auto;
    min-height: 46px;
    flex: 0 0 auto;
    padding: 0 14px;
    border-bottom: 2px solid transparent;
    border-left: 0;
  }

  .module-nav-list a.is-active {
    background: var(--jade-dark);
    border-bottom-color: var(--jade-dark);
    border-left-color: transparent;
  }

  .calc-block-title {
    scroll-margin-top: 76px;
  }
}

/* Keep the four tool links reachable on tablet and phone widths. */
@media (min-width: 561px) and (max-width: 1000px) {
  .site-header { grid-template-columns: 1fr auto; gap: 16px; }
  .site-header .status-pill { display: none; }
}

@media (min-width: 721px) and (max-width: 1000px) {
  .site-header { grid-template-columns: auto minmax(0, 1fr); }
  .site-header .brand { white-space: nowrap; }
  .primary-nav { min-width: 0; justify-content: flex-start; overflow-x: auto; }
}

@media (min-width: 561px) and (max-width: 700px) {
  .site-header { grid-template-columns: 1fr; gap: 8px; padding: 14px 0; }
  .primary-nav { justify-content: flex-start; overflow-x: auto; }
}

@media (max-width: 560px) {
  .primary-nav { gap: 2px; min-width: 0; }
  .primary-nav a { padding-right: 10px; padding-left: 10px; }
}

.lantern-home-entry {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 28px;
  padding: 28px;
  border: 1px solid var(--line-strong);
  border-radius: 20px;
  background: linear-gradient(110deg, rgba(63, 155, 112, .08), transparent), white;
  box-shadow: var(--shadow);
  color: var(--paper);
  text-decoration: none;
}
.lantern-home-entry:hover { border-color: var(--jade); transform: translateY(-1px); }
.lantern-home-entry:focus-visible { outline: 2px solid var(--jade); outline-offset: 4px; }
.lantern-home-icon { display: grid; width: 54px; height: 54px; place-items: center; color: var(--jade-dark); background: #e5f3e9; border-radius: 14px; font: 30px "KaiTi", serif; }
.lantern-home-entry strong { display: block; font-size: 1.25rem; }
.lantern-home-entry small { display: block; margin-top: 8px; color: #667c72; line-height: 1.6; }
.lantern-home-action { margin-left: auto; color: var(--jade-dark); white-space: nowrap; font-size: .9rem; font-weight: 700; }
@media (max-width: 560px) {
  .lantern-home-entry { flex-wrap: wrap; gap: 14px; padding: 20px; }
  .lantern-home-action { flex-basis: 100%; margin-left: 50px; }
}

@media (max-width: 720px) {
  .site-header { width: 100%; min-height: 0; padding: 11px 16px 0; display: block; }
  .brand { margin-bottom: 7px; }
  .status-pill { display: none; }
  .primary-nav { justify-content: flex-start; margin: 0 -16px; padding: 0 16px; overflow-x: auto; scroll-padding-inline: 16px; scrollbar-width: none; }
  .primary-nav::-webkit-scrollbar { display: none; }
  .primary-nav a { scroll-margin-inline: 16px; }
  .primary-nav a:first-child { padding-left: 11px; }
  main, footer { width: min(100% - 24px, 1240px); }
  .intro { flex-direction: column; align-items: flex-start; gap: 4px; padding: 14px 0 12px; }
  h1 { font-size: 1.5rem; }
  .calculator-shell { border-radius: 16px; }
}

@media (min-width: 1001px) {
  .site-header { grid-template-columns: auto minmax(0, 1fr) auto; }
  .site-header .primary-nav { min-width: 0; justify-content: flex-start; overflow-x: auto; }
}

/* Center the navigation against the page while keeping overflow reachable. */
.site-header:has(> .primary-nav) .primary-nav { min-width: 0; justify-content: safe center; overflow-x: auto; }
@media (min-width: 1280px) {
  .site-header:has(> .primary-nav) { grid-template-columns: minmax(0, 1fr) max-content minmax(0, 1fr); }
}
@media (min-width: 721px) and (max-width: 1279px) {
  .site-header:has(> .primary-nav) { grid-template-columns: minmax(0, 1fr) auto; }
  .site-header:has(> .primary-nav) .primary-nav { grid-column: 1 / -1; grid-row: 2; width: 100%; }
}
@media (max-width: 720px) {
  .site-header:has(> .primary-nav) { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 7px 8px; }
  .site-header:has(> .primary-nav) .brand { grid-column: 1; grid-row: 1; margin-bottom: 0; }
  .site-header:has(> .primary-nav) .primary-nav { grid-column: 1 / -1; grid-row: 2; width: calc(100% + 32px); margin: 0 -16px; }
}
@media (max-width: 560px) {
  .site-header:has(> .primary-nav) .primary-nav { grid-row: 3; }
  .site-header:has(> .primary-nav):not(:has(.site-header-tools)) .primary-nav { grid-row: 2; }
}