/* designmybattery.com
   Palette drawn from cell materials: aluminum foil, graphite, cobalt, electrolyte amber. */

:root {
  color-scheme: light dark;
  --paper: #EDF0F2;
  --panel: #F8FAFB;
  --ink: #15212C;
  --steel: #56636F;
  --rule: #C7CFD6;
  --cobalt: #2340B8;
  --cobalt-soft: #E3E8FA;
  --amber: #E3A21A;
  --good: #2C7A4B;
  --warn: #A3471F;

  --can: #B9C3CC;
  --can-top: #D5DCE2;
  --can-shade: #98A4AF;
  --foil: #D9DEE3;
  --foil-edge: #AEB8C1;

  --r-small: 4px;
  --r-large: 14px;
  --gap: clamp(1rem, 2.5vw, 2rem);
  --font: "Archivo", "Helvetica Neue", Arial, system-ui, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #10171E;
    --panel: #17212A;
    --ink: #E4E9ED;
    --steel: #9AA7B2;
    --rule: #2C3944;
    --cobalt: #8EA2FF;
    --cobalt-soft: #1E2A4D;
    --amber: #F0B43A;
    --good: #5FC08A;
    --warn: #F08A5D;
    --can: #3D4B57;
    --can-top: #56656F;
    --can-shade: #2C3843;
    --foil: #4A5661;
    --foil-edge: #36424C;
  }
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.55;
  font-variation-settings: "wdth" 100;
}

h1, h2, legend, .lcos-value, .brand {
  font-variation-settings: "wdth" 116;
}

h1 {
  font-size: clamp(2.1rem, 5.2vw, 4.1rem);
  font-weight: 780;
  line-height: 1.02;
  letter-spacing: -0.015em;
  margin: 0 0 1rem;
  max-width: 17ch;
}

h2 {
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 0.5rem;
}

a { color: var(--cobalt); }

:focus-visible {
  outline: 2px solid var(--cobalt);
  outline-offset: 2px;
}

/* Header and intro */

.site-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 1240px;
  margin: 0 auto;
  padding: 1.1rem var(--gap);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
}

.brand-mark { width: 16px; height: 26px; fill: var(--ink); }
.brand-mark .fill { fill: var(--amber); }

.by { margin: 0; color: var(--steel); font-size: 0.9rem; }

main {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 var(--gap) 3rem;
}

.intro { padding: clamp(1.5rem, 5vw, 3.5rem) 0 clamp(1.5rem, 4vw, 2.5rem); }

.lede {
  max-width: 60ch;
  margin: 0;
  color: var(--steel);
  font-size: 1.125rem;
}

/* Workbench */

.workbench {
  display: grid;
  gap: var(--gap);
  align-items: start;
}

@media (min-width: 960px) {
  .workbench { grid-template-columns: minmax(0, 1fr) 420px; }
  .results { position: sticky; top: 1rem; max-height: calc(100vh - 2rem); overflow-y: auto; }
}

.config { display: grid; gap: 1.75rem; }

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

.step legend {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0;
  margin-bottom: 0.75rem;
  font-size: 1.2rem;
  font-weight: 700;
}

.n {
  display: inline-grid;
  place-items: center;
  width: 1.7rem;
  height: 1.7rem;
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  font-size: 0.85rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  font-variation-settings: "wdth" 100;
}

.hint { margin: -0.35rem 0 0.75rem; color: var(--steel); font-size: 0.95rem; max-width: 65ch; }

input[type="radio"], input[type="checkbox"] { accent-color: var(--cobalt); }

/* Format tiles */

.tiles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.tile {
  position: relative;
  display: grid;
  grid-template-columns: 36px 1fr;
  grid-template-rows: auto auto;
  column-gap: 0.9rem;
  align-items: center;
  padding: 1rem;
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--r-large);
  cursor: pointer;
}

.tile input { position: absolute; opacity: 0; pointer-events: none; }
.tile svg { grid-row: 1 / span 2; width: 36px; height: 50px; fill: var(--can); stroke: var(--steel); stroke-width: 1.2; }
.tile svg .top { fill: var(--can-top); }
.tile-title { font-weight: 700; }
.tile-sub { color: var(--steel); font-size: 0.875rem; line-height: 1.35; }
.tile:has(input:checked) { border-color: var(--cobalt); box-shadow: 0 0 0 1px var(--cobalt); }
.tile:has(input:focus-visible) { outline: 2px solid var(--cobalt); outline-offset: 2px; }

/* Size chips */

.chips { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.9rem 0.5rem 0.7rem;
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.95rem;
}

.chip-sub { color: var(--steel); font-size: 0.85rem; font-variant-numeric: tabular-nums; }
.chip:has(input:checked) { border-color: var(--cobalt); background: var(--cobalt-soft); }

/* Option lists */

.opts { display: grid; gap: 0.4rem; }

.opt {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
  align-items: start;
  padding: 0.7rem 0.9rem;
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--r-small);
  cursor: pointer;
}

.opt input { margin-top: 0.3rem; }
.opt-body { display: grid; gap: 0.1rem; }
.opt-title { font-weight: 650; }
.opt-name { font-weight: 400; color: var(--steel); margin-left: 0.35rem; }
.opt-sub { color: var(--steel); font-size: 0.9rem; line-height: 1.4; }
.opt-why { color: var(--warn); font-size: 0.85rem; }
.opt-why:empty { display: none; }
.opt:has(input:checked) { border-color: var(--cobalt); box-shadow: inset 3px 0 0 var(--cobalt); }
.opt:has(input:disabled) { cursor: not-allowed; }
.opt:has(input:disabled) .opt-title,
.opt:has(input:disabled) .opt-sub { opacity: 0.55; }

.opt-brm { border-style: dashed; }
.opt-brm:has(input:checked) { border-style: solid; }

/* Fields */

.field { display: grid; gap: 0.3rem; min-width: 0; }
.field label { font-weight: 600; font-size: 0.95rem; }
.unit { font-weight: 400; color: var(--steel); }

.grid-fields {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 0.9rem;
  margin-top: 0.9rem;
  align-items: end;
}

.field-wide { grid-column: 1 / -1; }

input[type="number"], input:not([type]), input[type="email"], select, textarea {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--r-small);
  padding: 0.6rem 0.7rem;
}

input[type="number"] { font-variant-numeric: tabular-nums; }
textarea { resize: vertical; }

/* Results */

.results {
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--r-large);
  padding: 1.25rem;
}

.cell-view {
  margin: 0 0 1rem;
  padding: 0.5rem 0 0.75rem;
  border-radius: var(--r-small);
  background-image: radial-gradient(var(--rule) 1px, transparent 1px);
  background-size: 14px 14px;
}

.cell-view svg { display: block; width: 100%; height: auto; max-height: 250px; }

.cell-view figcaption { display: grid; gap: 0.4rem; padding: 0 0.5rem; }
.caption { font-weight: 650; }

.legend { display: flex; flex-wrap: wrap; gap: 0.35rem 1rem; color: var(--steel); font-size: 0.85rem; }
.legend-item { display: inline-flex; align-items: center; gap: 0.4rem; }
.swatch { width: 12px; height: 12px; border-radius: 2px; border: 1px solid var(--rule); }
.swatch.hatched {
  background-image: repeating-linear-gradient(45deg, transparent 0 3px, rgba(227, 162, 26, 0.75) 3px 5px);
}

.svg-can { fill: var(--can); }
.svg-can-top { fill: var(--can-top); stroke: var(--can-shade); stroke-width: 1; }
.svg-can-shade { fill: var(--can-shade); }
.svg-edge { fill: none; stroke: var(--steel); stroke-width: 1; }
.svg-foil { fill: var(--foil); }
.svg-foil-edge { fill: var(--foil-edge); }
.svg-seal { fill: none; stroke: var(--foil-edge); stroke-width: 1; stroke-dasharray: 3 3; }

.lcos { border-top: 1px solid var(--rule); padding-top: 1rem; }
.lcos p { margin: 0; }
.lcos-label { color: var(--steel); font-size: 0.9rem; }
.lcos-value {
  font-size: clamp(2rem, 4vw, 2.6rem);
  font-weight: 760;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.lcos-value small { font-size: 0.45em; font-weight: 500; color: var(--steel); margin-left: 0.3rem; }
.lcos-note { font-size: 0.9rem; color: var(--steel); }
.lcos-note.good { color: var(--good); }
.lcos-note.warn { color: var(--warn); }

.spec {
  display: grid;
  grid-template-columns: auto 1fr;
  margin: 1rem 0 0;
  font-size: 0.95rem;
}
.spec dt, .spec dd { padding: 0.45rem 0; border-top: 1px solid var(--rule); margin: 0; }
.spec dt { color: var(--steel); padding-right: 1rem; }
.spec dd { text-align: right; font-variant-numeric: tabular-nums; font-weight: 600; }

.status { margin: 0.75rem 0 0; font-size: 0.9rem; color: var(--steel); min-height: 1.2em; }
.status.error { color: var(--warn); }

/* Lower blocks */

.block { margin-top: clamp(2.5rem, 6vw, 4rem); }

.table-wrap { overflow-x: auto; border: 1px solid var(--rule); border-radius: var(--r-small); background: var(--panel); }

table.cells { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; min-width: 620px; }
table.cells th, table.cells td { padding: 0.7rem 0.9rem; text-align: right; border-bottom: 1px solid var(--rule); }
table.cells th { font-weight: 600; color: var(--steel); font-size: 0.9rem; }
table.cells th:first-child, table.cells td:first-child,
table.cells th:nth-child(2), table.cells td:nth-child(2) { text-align: left; }
table.cells td:first-child { font-weight: 650; }
table.cells tbody tr:last-child td { border-bottom: 0; }

.ranking {
  list-style: none;
  counter-reset: rank;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.ranking li {
  counter-increment: rank;
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr) auto;
  gap: 0.25rem 1rem;
  align-items: center;
  padding: 0.9rem 1rem;
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--r-small);
}

.ranking li::before {
  content: counter(rank);
  grid-row: 1 / span 2;
  font-size: 1.5rem;
  font-weight: 760;
  font-variation-settings: "wdth" 116;
  color: var(--steel);
}

.ranking li.current { border-color: var(--cobalt); }
.rank-title { font-weight: 700; }
.rank-title span { font-weight: 400; color: var(--steel); }
.rank-meta { grid-column: 2; color: var(--steel); font-size: 0.9rem; }
.rank-meta .ok { color: var(--good); }
.rank-meta .no { color: var(--warn); }
.rank-side { grid-column: 3; grid-row: 1 / span 2; display: grid; justify-items: end; gap: 0.35rem; }
.rank-lcos { font-weight: 700; font-variant-numeric: tabular-nums; }
.bar { width: 110px; height: 5px; background: var(--rule); border-radius: 3px; overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--cobalt); }

button, .rank-use {
  font: inherit;
  font-weight: 650;
  border-radius: var(--r-small);
  cursor: pointer;
}

.rank-use {
  font-size: 0.85rem;
  padding: 0.3rem 0.7rem;
  background: transparent;
  color: var(--cobalt);
  border: 1px solid var(--cobalt);
}

@media (max-width: 760px) {
  .tiles { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .ranking li { grid-template-columns: 1.8rem minmax(0, 1fr); }
  .rank-side { grid-column: 2; grid-row: auto; justify-items: start; grid-auto-flow: column; align-items: center; }
  .tiles { grid-template-columns: 1fr; }
}

/* Materials */

.ingredients { display: flex; flex-wrap: wrap; gap: 0.3rem; margin-top: 0.35rem; }
.ing {
  padding: 0.15rem 0.55rem;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: var(--paper);
  font-size: 0.8rem;
}
.ing-k { color: var(--steel); }

.formulas { margin-top: 0.9rem; }
.formulas .sub-legend { margin: 0 0 0.5rem; }
.step:has(input[name="brm"]:not(:checked)) .formulas { display: none; }

.mat-lock {
  grid-column: 1 / -1;
  margin: 0;
  padding: 0.7rem 0.9rem;
  background: var(--cobalt-soft);
  border-left: 3px solid var(--cobalt);
  border-radius: var(--r-small);
  font-size: 0.92rem;
}

.materials.locked .mat-sliders { display: none; }
@media (min-width: 700px) {
  .materials.locked { grid-template-columns: 1fr; }
}

.materials {
  display: grid;
  gap: 1rem;
  margin-top: 0.9rem;
  padding: 1rem;
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--r-large);
}

@media (min-width: 700px) {
  .materials { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; }
}

.mat-sliders .slider:first-child { border-top: 0; padding-top: 0; }

.slider-ends, .slider-note {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  margin-top: -0.2rem;
  color: var(--steel);
  font-size: 0.8rem;
}

.slider-note { color: var(--warn); }
.slider-note:empty { display: none; }
.slider:not(.blend-row):has(input:disabled) label, .slider:not(.blend-row):has(input:disabled) output { opacity: 0.5; }
.blend-row:has(.blend-check input:not(:checked)) input[type="range"] { opacity: 0.35; }
input[type="range"]:disabled { cursor: not-allowed; opacity: 0.45; }

.mat-group {
  margin: 1rem 0 0.2rem;
  font-weight: 700;
  font-size: 0.95rem;
}
.mat-sliders > .mat-group:first-child { margin-top: 0; }

.blend-row .blend-check { display: inline-flex; align-items: center; gap: 0.5rem; cursor: pointer; }
.blend-row .blend-check input { width: 1.05rem; height: 1.05rem; margin: 0; }
.blend-row:has(.blend-check input:not(:checked)) output { color: var(--steel); font-weight: 500; }

.blend-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1rem; }
.blend-actions input { flex: 1 1 140px; width: auto; padding: 0.4rem 0.6rem; }

.btn-line {
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
  background: transparent;
  color: var(--cobalt);
  border: 1px solid var(--cobalt);
}

.saved { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.4rem; }
.saved:empty { display: none; }
.saved-chip {
  display: inline-flex;
  align-items: stretch;
  border: 1px solid var(--rule);
  border-radius: 999px;
  overflow: hidden;
  background: var(--paper);
  font-size: 0.85rem;
}
.saved-chip button { background: transparent; border: 0; border-radius: 0; color: var(--ink); padding: 0.35rem 0.7rem; font-weight: 600; }
.saved-chip button + button { border-left: 1px solid var(--rule); color: var(--steel); padding: 0.35rem 0.55rem; font-weight: 500; }
.saved-chip.active { border-color: var(--cobalt); }

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

.outcomes {
  position: sticky;
  top: 1rem;
  padding: 0.9rem 1rem;
  background: var(--paper);
  border-radius: var(--r-small);
}

.outcomes-title { margin: 0; font-weight: 700; }
.outcomes-sub { margin: 0 0 0.6rem; color: var(--steel); font-size: 0.8rem; }

.outcome-grid { display: grid; grid-template-columns: 1fr auto; margin: 0; font-size: 0.92rem; }
.outcome-grid dt, .outcome-grid dd { margin: 0; padding: 0.45rem 0; border-top: 1px solid var(--rule); }
.outcome-grid dt { color: var(--steel); padding-right: 0.75rem; }
.outcome-grid dd { text-align: right; font-weight: 700; font-variant-numeric: tabular-nums; }
.outcome-grid dd.up { color: var(--good); }
.outcome-grid dd.down { color: var(--warn); }

.network { display: block; width: 110px; margin-left: auto; height: 5px; margin-top: 0.3rem; background: var(--rule); border-radius: 3px; overflow: hidden; }
.network i { display: block; height: 100%; background: var(--cobalt); transition: width 180ms ease-out; }

/* Cost of storage calculator */

.hint-after { margin: 0.6rem 0 0; }

.calc-grid {
  display: grid;
  gap: var(--gap);
  margin-top: 1.25rem;
  align-items: start;
}

@media (min-width: 960px) {
  .calc-grid { grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.4fr); }
}

.calc-controls { display: grid; gap: 1.5rem; }

.sliders, .compare { border: 0; margin: 0; padding: 0; min-width: 0; }
.sliders .hint, .compare .hint { margin: 0.75rem 0 0; }

.sub-legend { padding: 0; margin-bottom: 0.75rem; font-weight: 700; font-size: 1.05rem; }

.slider {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: 0.35rem 1rem;
  padding: 0.7rem 0;
  border-top: 1px solid var(--rule);
}

.slider label { font-weight: 600; font-size: 0.95rem; }

.slider output {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--cobalt);
}

.slider output.off { color: var(--steel); font-weight: 500; }

.slider input[type="range"] { grid-column: 1 / -1; }

input[type="range"] {
  --fill: 50%;
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 28px;
  background: transparent;
  cursor: pointer;
  margin: 0;
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 3px;
  background: linear-gradient(to right, var(--cobalt) var(--fill), var(--rule) var(--fill));
}

input[type="range"]::-moz-range-track { height: 6px; border-radius: 3px; background: var(--rule); }
input[type="range"]::-moz-range-progress { height: 6px; border-radius: 3px; background: var(--cobalt); }

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  margin-top: -7px;
  border-radius: 50%;
  background: var(--panel);
  border: 2px solid var(--cobalt);
}

input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--panel);
  border: 2px solid var(--cobalt);
}

input[type="range"]:focus-visible { outline: none; }
input[type="range"]:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 3px var(--cobalt-soft), 0 0 0 5px var(--cobalt); }
input[type="range"]:focus-visible::-moz-range-thumb { box-shadow: 0 0 0 3px var(--cobalt-soft), 0 0 0 5px var(--cobalt); }

.check-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 0.4rem;
}

.check {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.55rem 0.7rem;
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--r-small);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
}

.check input { width: 1.05rem; height: 1.05rem; margin: 0; }
.check:has(input:checked) { border-color: var(--cobalt); background: var(--cobalt-soft); }

.calc-chart {
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--r-large);
  padding: 1.25rem;
}

@media (min-width: 960px) {
  .calc-chart { position: sticky; top: 1rem; }
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.1rem;
  color: var(--steel);
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.chart-legend span { display: inline-flex; align-items: center; gap: 0.4rem; }
.chart-legend i { display: inline-block; width: 12px; height: 12px; border-radius: 2px; }
.chart-legend .seg-target { width: 0; height: 14px; border-left: 2px dashed var(--warn); border-radius: 0; }
.chart-legend .tgt-key[hidden] { display: none; }

.seg-cell { background: var(--cobalt); }
.seg-upkeep { background: var(--steel); }
.seg-charging { background: var(--amber); }

.chart {
  --label-w: 150px;
  --val-w: 88px;
  --t: -1;
  --gc: 0.75rem;
  position: relative;
  display: grid;
  gap: 0.35rem;
}

.chart-row {
  display: grid;
  grid-template-columns: var(--label-w) minmax(0, 1fr) var(--val-w);
  gap: var(--gc);
  align-items: center;
  padding: 0.45rem 0;
}

.chart-label { display: grid; line-height: 1.25; min-width: 0; }
.chart-label b { font-weight: 700; }
.chart-label small { color: var(--steel); font-size: 0.8rem; }
.chart-row.current .chart-label b::after { content: " (yours)"; font-weight: 500; color: var(--cobalt); }

.track { display: flex; height: 22px; border-radius: 3px; overflow: hidden; background: var(--paper); }
.track span { height: 100%; transition: width 180ms ease-out; }
.chart-row.current .track { box-shadow: 0 0 0 2px var(--cobalt); }

.chart-val { text-align: right; font-weight: 700; font-variant-numeric: tabular-nums; }
.chart-val.ok { color: var(--good); }
.chart-val.no { color: var(--warn); }

.target-line {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 0;
  border-left: 2px dashed var(--warn);
  left: calc(var(--label-w) + var(--gc) + (100% - var(--label-w) - var(--val-w) - 2 * var(--gc)) * var(--t));
  pointer-events: none;
}

.chart-foot { margin: 1rem 0 0; color: var(--steel); font-size: 0.9rem; }

@media (max-width: 560px) {
  .chart { --label-w: 96px; --val-w: 70px; --gc: 0.5rem; }
}

/* Free samples */

.samples {
  display: grid;
  gap: var(--gap);
  padding: clamp(1.25rem, 3vw, 2rem);
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--r-large);
}

@media (min-width: 900px) {
  .samples { grid-template-columns: 1fr 1.6fr; align-items: start; }
  .samples-intro { position: sticky; top: 1rem; }
}

.samples-intro p { color: var(--steel); max-width: 45ch; }
.fine { font-size: 0.85rem; color: var(--steel); }

.sample-form { display: grid; gap: 1.5rem; }
.sample-step { border: 0; margin: 0; padding: 0; min-width: 0; }
.sample-step legend { padding: 0; margin-bottom: 0.6rem; font-weight: 700; font-size: 1.05rem; }

.field-pair { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 0.9rem; }
.sample-form input, .sample-form select, .sample-form textarea { background: var(--paper); }

.qty-list { display: grid; gap: 0.5rem; }
.qty-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.6rem 0.9rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--r-small);
}
.qty-row label { display: grid; }
.qty-row small { color: var(--steel); font-size: 0.85rem; }
.qty-row input { width: 5rem; text-align: center; font-variant-numeric: tabular-nums; }

.ship-box { padding: 1rem; background: var(--paper); border: 1px solid var(--rule); border-radius: var(--r-small); }
.ship-box p { margin: 0; }
.ship-amount { font-size: 1.6rem; font-weight: 760; font-variation-settings: "wdth" 116; font-variant-numeric: tabular-nums; }
.ship-detail { margin-top: 0.35rem; color: var(--steel); font-size: 0.9rem; }
.ship-detail:empty { display: none; }

.card-field {
  min-height: 56px;
  padding: 0.35rem 0.5rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--r-small);
}

.consent { align-items: flex-start; margin-top: 0.6rem; font-weight: 400; line-height: 1.45; }
.consent input { margin-top: 0.2rem; }
.consent b { font-weight: 700; }

.sample-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; margin: 1rem 0 0.75rem; }
.sample-actions .status { margin: 0; }

.sample-done { padding: 1.25rem; background: var(--paper); border-left: 3px solid var(--good); border-radius: var(--r-small); }
.sample-done h3 { margin: 0 0 0.4rem; }
.sample-done p { margin: 0 0 0.5rem; }

/* Quote */

.quote {
  display: grid;
  gap: var(--gap);
  padding: clamp(1.25rem, 3vw, 2rem);
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--r-large);
}

@media (min-width: 900px) {
  .quote { grid-template-columns: 1fr 1.6fr; }
}

.quote-intro p { color: var(--steel); max-width: 45ch; }

.lead {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.9rem;
}

.lead input, .lead textarea { background: var(--paper); }

.lead-actions { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; }
.lead-actions .status { margin: 0; }

button[type="submit"] {
  padding: 0.75rem 1.4rem;
  background: var(--ink);
  color: var(--paper);
  border: 0;
}

button[type="submit"]:disabled { opacity: 0.6; cursor: progress; }

.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* Footer */

.site-foot {
  max-width: 1240px;
  margin: 0 auto;
  padding: 1.5rem var(--gap) 2.5rem;
  border-top: 1px solid var(--rule);
  color: var(--steel);
  font-size: 0.85rem;
}

.site-foot p { max-width: 80ch; margin: 0 0 0.5rem; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}