/* PulsenTak v2 - architectural editorial system */
:root {
  --paper: #f5f4ee;
  --surface: #fffefa;
  --ink: #171c18;
  --muted: #5e675b;
  --subtle: #e9eae0;
  --line: #cfd5c7;
  --line-dark: #424d3e;
  --accent: #d9e6a3;
  --accent-strong: #b8cc76;
  --on-dark: #f4f5ee;
  --muted-dark: #bec8b5;
  --sans: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --gutter: clamp(24px, 5.6vw, 88px);
  --section-gap: clamp(76px, 7.7vw, 120px);
  --header-height: 100px;
  --ease: cubic-bezier(.2,.65,.25,1);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 20px); }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 16px/1.65 var(--sans); -webkit-font-smoothing: antialiased; }
button, input, select, textarea { font: inherit; }
button, a, summary, input, select, textarea { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-underline-offset: 5px; text-decoration-thickness: 1px; }
button, summary { cursor: pointer; touch-action: manipulation; }
button { color: inherit; }
img, svg { max-width: 100%; }
img { display: block; height: auto; }
figure { margin: 0; }
input, select, textarea, button { max-width: 100%; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid #647d2b; outline-offset: 5px; }
::selection { color: var(--ink); background: var(--accent); }
.container { width: min(calc(100% - var(--gutter) * 2), 1320px); margin-inline: auto; }
.section { padding-block: var(--section-gap); }
.section + .section { border-top: 1px solid var(--line); }
h1, h2, h3, h4, p { margin-top: 0; }
h1, h2, h3, h4 { font-weight: 400; }
h1 { font-size: clamp(52px, 5.2vw, 76px); line-height: 1.035; letter-spacing: -.055em; }
h2 { font-size: clamp(37px, 3.9vw, 58px); line-height: 1.1; letter-spacing: -.045em; }
h3 { font-size: 24px; line-height: 1.25; letter-spacing: -.025em; }
p { margin-bottom: 1.2em; }
p:last-child { margin-bottom: 0; }
.eyebrow, .kicker { font-size: 12px; font-weight: 500; line-height: 1.5; letter-spacing: .15em; text-transform: uppercase; margin-bottom: 24px; }
.lead { font-size: clamp(19px, 1.6vw, 23px); line-height: 1.5; letter-spacing: -.018em; }
.muted { color: var(--muted); }
.small, .fine-print, figcaption { font-size: 12px; line-height: 1.6; }
.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; }
.skip-link { position: fixed; z-index: 100; left: 20px; top: 12px; background: var(--accent); color: var(--ink); padding: 14px 20px; transform: translateY(-180%); }
.skip-link:focus { transform: translateY(0); }
.button, .btn { display: inline-flex; min-height: 52px; align-items: center; justify-content: space-between; gap: 32px; padding: 14px 22px; border: 1px solid transparent; border-radius: 0; font-size: 14px; font-weight: 500; line-height: 1.4; text-decoration: none; transition: background-color 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease); }
.button svg, .btn svg { flex: 0 0 18px; width: 18px; height: 18px; }
.button-dark, .button-primary, .btn-primary { color: var(--on-dark); background: var(--ink); }
.button-dark:hover, .button-primary:hover, .btn-primary:hover { background: #34402f; }
.button-accent, .button-lime, .btn-accent { color: var(--ink); background: var(--accent); }
.button-accent:hover, .button-lime:hover, .btn-accent:hover { background: #e4eec0; }
.button-outline, .button-secondary { color: var(--ink); background: transparent; border-color: #8b9682; }
.button-outline:hover, .button-secondary:hover { background: #e9eddf; border-color: var(--ink); }
.text-link { display: inline-flex; align-items: center; gap: 20px; min-height: 44px; padding-block: 8px; font-size: 14px; font-weight: 500; text-decoration: underline; }
.text-link svg { width: 18px; height: 18px; flex: 0 0 18px; }
.field { min-width: 0; }
.field label { display: block; margin-bottom: 8px; font-size: 14px; font-weight: 500; }
.field input:not([type='range']):not([type='checkbox']), .field select, .field textarea { width: 100%; min-height: 52px; border: 1px solid #9ca792; border-radius: 0; padding: 13px 14px; background: #fffefa; color: var(--ink); font-size: 16px; line-height: 1.4; }
.field textarea { min-height: 118px; resize: vertical; }
.field input::placeholder, .field textarea::placeholder { color: #727c69; opacity: 1; }
.field small, .field .field-note { display: block; margin: 8px 0 0; color: var(--muted); font-size: 12px; line-height: 1.55; }
input[type='checkbox'] { width: 18px; height: 18px; margin: 0; accent-color: #5b702f; }
input[type='range'] { display: block; width: 100%; height: 30px; margin: 6px 0 0; accent-color: #4d6329; cursor: pointer; }
fieldset { min-width: 0; border: 0; margin: 0; padding: 0; }
legend { padding: 0; }
@media (max-width: 760px) {
  :root { --gutter: 22px; --header-height: 82px; --section-gap: 72px; }
  h1 { font-size: clamp(48px, 12vw, 66px); }
  h2 { font-size: clamp(35px, 9vw, 46px); }
  h3 { font-size: 23px; }
  .button, .btn { min-height: 52px; padding: 14px 18px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

/* Header */
.site-header { position: sticky; top: 0; z-index: 40; display: flex; align-items: center; justify-content: space-between; gap: 36px; min-height: var(--header-height); padding: 12px var(--gutter); background: rgba(245,244,238,.98); border-bottom: 1px solid var(--line); }
.brand { display: block; flex: 0 0 220px; text-decoration: none; }
.brand img { width: 220px; height: auto; }
.site-header nav { display: flex; align-items: center; gap: clamp(18px, 2vw, 32px); }
.site-header nav a { display: inline-flex; min-height: 44px; align-items: center; font-size: 14px; font-weight: 500; text-decoration: none; white-space: nowrap; }
.site-header nav a:not(.nav-cta):hover { text-decoration: underline; }
.site-header .nav-cta { background: var(--ink); color: var(--on-dark); padding: 12px 18px; gap: 24px; }
.nav-cta:hover { background: #34402f; }
.menu-toggle { display: none; width: 48px; height: 48px; padding: 12px; background: transparent; border: 0; flex: 0 0 48px; }
.menu-toggle span { display: block; height: 1px; width: 24px; background: var(--ink); transition: transform 180ms var(--ease); }
.menu-toggle span + span { margin-top: 7px; }
.menu-toggle[aria-expanded='true'] span:first-child { transform: translateY(4px) rotate(45deg); }
.menu-toggle[aria-expanded='true'] span:last-child { transform: translateY(-4px) rotate(-45deg); }

/* A quiet copy panel lets the roof be the hero. */
.hero { display: grid; grid-template-columns: minmax(0, .4fr) minmax(0, .6fr); width: min(100%, 1680px); margin: 0 auto; }
.hero-copy { padding: clamp(44px, 4.7vw, 72px) clamp(32px, 3.4vw, 56px) 44px var(--gutter); align-self: center; }
.hero .eyebrow { display: flex; align-items: center; gap: 14px; margin-bottom: 30px; font-size: 12px; letter-spacing: .13em; }
.line-mark { display: block; flex: 0 0 25px; width: 25px; height: 2px; background: #75894d; }
.hero h1 { margin: 0 0 28px; }
.hero h1 > span { color: #46513f; }
.hero-lead { max-width: 32ch; margin-bottom: 30px; font-size: 18px; line-height: 1.6; color: #4a5443; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 22px; }
.hero-actions .text-link { min-height: 52px; }
.hero-small { font-size: 12px; line-height: 1.65; color: var(--muted); margin: 28px 0 0; }
.hero-visual { display: flex; flex-direction: column; min-width: 0; min-height: 610px; overflow: hidden; background: #cbd0c2; }
.hero-visual img { width: 100%; flex: 1; min-height: 0; height: 100%; object-fit: cover; object-position: center 49%; }
.hero-visual figcaption { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 20px; flex: 0 0 auto; background: var(--ink); color: #d6dfcb; padding: 14px 22px; font-size: 12px; letter-spacing: .035em; }
.hero-visual figcaption span:first-child { color: var(--on-dark); font-size: 12px; letter-spacing: .1em; }
.benefit-strip { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); border-bottom: 1px solid var(--line); }
.benefit-strip > div { display: flex; gap: 22px; align-items: flex-start; padding: 34px 28px; border-right: 1px solid var(--line); }
.benefit-strip > div:first-child { padding-left: 0; }
.benefit-strip > div:last-child { padding-right: 0; border-right: 0; }
.benefit-index { font-size: 12px; color: var(--muted); padding-top: 3px; }
.benefit-strip p { margin: 0; font-size: 14px; line-height: 1.65; color: var(--muted); }
.benefit-strip strong { font-weight: 500; color: var(--ink); }
.intro-section { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: clamp(50px, 8vw, 120px); align-items: start; }
.intro-copy { max-width: 60ch; padding-top: 42px; color: #4f594a; }
.intro-copy .lead { color: var(--ink); margin-bottom: 26px; }
.intro-copy .text-link { margin-top: 6px; color: var(--ink); }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 60px; margin-bottom: 48px; }
.section-heading h2 { margin-bottom: 0; }
.section-heading .eyebrow { margin-bottom: 22px; }
.section-intro { max-width: 36ch; margin: 0 0 5px; color: var(--muted); font-size: 16px; line-height: 1.65; }

/* Material: real visual scale, understated labels on demand. */
.material-section { background: #e9ece2; padding-block: var(--section-gap); }
.material-grid { display: grid; grid-template-columns: minmax(0,1.55fr) minmax(0,1fr); gap: clamp(34px, 4.5vw, 68px); align-items: center; }
.material-figure { position: relative; min-width: 0; background: #d3dacb; }
.material-figure > img { width: 100%; height: auto; aspect-ratio: 1.35; object-fit: cover; object-position: center; }
.material-figure figcaption { padding: 14px 16px; background: #f0f2e9; color: #58634f; font-size: 12px; line-height: 1.55; }
.material-marker { position: absolute; display: inline-flex; align-items: center; gap: 9px; width: max-content; max-width: calc(100% - 32px); padding: 9px 12px 9px 9px; background: #171c18; color: #fff; font-size: 12px; font-weight: 500; line-height: 1.4; opacity: 0; visibility: hidden; transform: translateY(6px); transition: opacity 180ms var(--ease), transform 180ms var(--ease), visibility 180ms; }
.material-marker > span { display: grid; place-items: center; width: 28px; height: 28px; flex: 0 0 28px; border: 1px solid #839862; color: var(--accent); font-size: 12px; }
.active-marker { left: 7%; top: 41%; }
.passive-marker { right: 6%; top: 55%; }
.material-figure.show-parts .material-marker { opacity: 1; visibility: visible; transform: none; }
.segmented { display: inline-flex; max-width: 100%; border: 1px solid #8a977d; margin-bottom: 36px; }
.segmented button { min-height: 46px; border: 0; background: transparent; padding: 11px 19px; font-size: 14px; transition: background-color 180ms var(--ease),color 180ms var(--ease); }
.segmented button[aria-pressed='true'] { color: var(--on-dark); background: var(--ink); }
.segmented button:not([aria-pressed='true']):hover { background: #dce3d1; }
.material-copy .eyebrow { color: var(--muted); margin-bottom: 14px; }
.material-copy h3 { font-size: clamp(27px, 2.4vw, 34px); margin-bottom: 20px; }
.material-copy #material-text { color: #4f5a48; }
.material-definitions { margin: 28px 0 0; }
.material-definitions > div { border-top: 1px solid #bdc8b1; padding: 18px 0; }
.material-definitions dt { font-size: 14px; font-weight: 500; margin-bottom: 3px; }
.material-definitions dt span { font-size: 12px; color: #58694a; margin-right: 13px; }
.material-definitions dd { margin: 0 0 0 31px; font-size: 14px; color: var(--muted); }
.small-note { font-size: 12px; line-height: 1.65; color: var(--muted); margin-top: 22px; }

/* Project choice */
.project-tabs { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); border-block: 1px solid var(--line); }
.project-tabs button { display: grid; grid-template-columns: 24px minmax(0,1fr) 20px; align-items: center; gap: 14px; min-height: 88px; padding: 20px 24px; text-align: left; border: 0; border-right: 1px solid var(--line); border-radius: 0; background: transparent; font-size: 16px; font-weight: 500; transition: background-color 180ms var(--ease); }
.project-tabs button:last-child { border-right: 0; }
.project-tabs button[aria-pressed='true'] { background: var(--accent); }
.project-tabs button:not([aria-pressed='true']):hover { background: #e8ecdF; }
.project-tabs button > span:first-child { font-size: 12px; color: #5a684d; }
.project-tabs button > span:last-child { font-size: 23px; font-weight: 400; }
.project-answer { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1.15fr) auto; align-items: center; gap: 40px; padding-top: 32px; }
.project-answer .eyebrow { font-size: 12px; margin-bottom: 12px; }
.project-answer h3 { font-size: 24px; margin-bottom: 0; }
.project-answer > p { font-size: 16px; color: var(--muted); margin: 0; }
.project-answer .text-link { white-space: nowrap; }

/* Calculator */
.calculator-section { background: #e8ecdf; }
.calculator-section .section-heading .section-intro { max-width: 43ch; }
.calculator-grid { display: grid; grid-template-columns: minmax(0,1.15fr) minmax(0,1fr); align-items: start; border: 1px solid #c3cdb6; }
.calculator-form { min-width: 0; background: var(--surface); padding: clamp(28px, 3.3vw, 44px); }
.calc-form-heading { display: flex; justify-content: space-between; align-items: baseline; gap: 20px; margin-bottom: 16px; }
.calc-form-heading h3 { margin: 0; font-size: 26px; }
.reset-button { min-height: 44px; padding: 8px 0; border: 0; background: transparent; color: #50663a; font-size: 12px; text-decoration: underline; text-underline-offset: 4px; white-space: nowrap; }
.example-note { margin-bottom: 28px; background: #f0f3e8; padding: 14px 16px; border-left: 2px solid #91a66b; color: #59644e; font-size: 12px; line-height: 1.7; }
.example-note strong { color: #35432d; font-weight: 600; }
.calculator-form > .field { margin-bottom: 24px; }
.calc-cost-fields { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 20px; margin-bottom: 24px; }
.calculator-form .field label { font-size: 14px; line-height: 1.5; }
.input-unit { position: relative; }
.calculator-form .input-unit input { width: 100%; height: 60px; min-height: 60px; padding: 16px 72px 16px 16px; font-size: 22px; line-height: 1.2; font-weight: 400; font-variant-numeric: tabular-nums; background: var(--surface); border-color: #9ca98e; }
.input-unit > span { position: absolute; right: 15px; top: 50%; transform: translateY(-50%); color: var(--muted); font-size: 12px; pointer-events: none; }
.field-help { margin: 8px 0 0; color: var(--muted); font-size: 12px; line-height: 1.6; }
.range-heading { display: flex; justify-content: space-between; align-items: baseline; gap: 24px; }
.range-heading label { margin-bottom: 7px; max-width: 75%; }
.range-heading output { font-size: 22px; font-variant-numeric: tabular-nums; white-space: nowrap; }
.range-labels { display: flex; justify-content: space-between; color: var(--muted); font-size: 12px; }
.calc-assumptions { border-block: 1px solid var(--line); margin: 26px 0; }
.calc-assumptions summary, .result-breakdown summary { list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 62px; font-size: 14px; line-height: 1.5; padding-block: 14px; }
summary::-webkit-details-marker { display: none; }
.calc-assumptions summary > span, .result-breakdown summary > span { font-size: 24px; font-weight: 300; line-height: 1; transition: transform 180ms var(--ease); }
.calc-assumptions[open] summary > span, .result-breakdown[open] summary > span { transform: rotate(45deg); }
.assumption-fields { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 22px 20px; padding: 10px 0 26px; }
.assumption-fields > .field:last-child { grid-column: 1/-1; }
.assumption-fields .input-unit input { font-size: 20px; }
.form-error { background: #f7e8de; border-left: 3px solid #9a442c; color: #813923; padding: 13px 16px; font-size: 14px; margin-bottom: 22px; }
.calculator-form > .button { width: 100%; }
.calc-result { position: sticky; top: calc(var(--header-height) + 20px); min-width: 0; background: var(--ink); color: var(--on-dark); padding: clamp(28px, 3.3vw, 44px); }
.calc-result .eyebrow { color: var(--accent); margin-bottom: 24px; }
.result-caption { font-size: 14px; color: var(--muted-dark); margin: 0 0 10px; }
.result-main { display: flex; align-items: baseline; flex-wrap: wrap; gap: 3px 12px; font-variant-numeric: tabular-nums; margin-bottom: 32px; }
.result-main > output { max-width: 100%; font-size: clamp(44px, 4.6vw, 68px); line-height: 1.08; letter-spacing: -.045em; overflow-wrap: anywhere; }
.result-main > span { font-size: 20px; color: var(--muted-dark); }
.budget-chart { display: grid; gap: 18px; margin-bottom: 30px; }
.budget-row > div:first-child { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 8px; font-size: 12px; color: #c3ccbb; }
.budget-row output { font-variant-numeric: tabular-nums; white-space: nowrap; }
.budget-row.integrated > div:first-child { color: var(--on-dark); }
.budget-track { width: 100%; height: 6px; background: #3c4737; }
.budget-track > span { display: block; height: 6px; width: 54%; background: #91a17e; max-width: 100%; }
.integrated .budget-track > span { width: 100%; background: var(--accent); }
.result-stats { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 24px; padding: 24px 0; border-block: 1px solid var(--line-dark); }
.result-stats > div { min-width: 0; }
.result-stats > div > span { display: block; color: var(--muted-dark); font-size: 12px; line-height: 1.6; margin-bottom: 10px; }
.result-stats strong { display: block; font-size: clamp(26px, 2.4vw, 34px); font-weight: 400; letter-spacing: -.03em; line-height: 1.2; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.result-stats small { font-size: 14px; font-weight: 400; letter-spacing: 0; color: #ccd5c5; }
.result-status { color: #d8e2ce; font-size: 12px; line-height: 1.65; padding: 14px 0 0; margin-bottom: 14px; }
.result-breakdown { border-block: 1px solid var(--line-dark); }
.result-breakdown summary { color: #e5eadf; }
.result-breakdown dl { margin: 0 0 16px; font-size: 12px; }
.result-breakdown dl > div { display: flex; justify-content: space-between; gap: 20px; padding: 8px 0; }
.result-breakdown dt { color: #bdcbb2; }
.result-breakdown dd { margin: 0; text-align: right; color: #f4f5ee; font-variant-numeric: tabular-nums; white-space: nowrap; }
.result-breakdown > p { margin-bottom: 22px; color: var(--muted-dark); font-size: 12px; line-height: 1.7; }
.result-limit { margin: 22px 0; color: var(--muted-dark); font-size: 12px; line-height: 1.7; }
.calc-result > .button { width: 100%; }
.price-context { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 40px; margin-top: 58px; }
.price-context > div { border-top: 1px solid #bdc9ae; padding-top: 24px; }
.context-number { color: #5b6b49; font-size: 12px; }
.price-context h3 { margin: 18px 0 16px; font-size: 22px; }
.price-context p { color: #535f48; font-size: 16px; line-height: 1.7; }
.price-context .text-link { margin-top: 0; }

/* Energy and delivery */
.battery-section { padding-block: 86px; background: var(--ink); color: var(--on-dark); }
.battery-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: clamp(60px, 10vw, 150px); }
.battery-grid .eyebrow { color: var(--accent); }
.battery-grid > div:last-child { padding-top: 38px; color: var(--muted-dark); }
.battery-grid .lead { color: var(--on-dark); }
.battery-note { display: flex; align-items: flex-start; gap: 24px; border-top: 1px solid var(--line-dark); padding-top: 24px; margin-top: 26px; }
.battery-note > span { color: var(--accent); font-size: 28px; line-height: 1.2; }
.battery-note p { font-size: 14px; line-height: 1.7; margin: 0; }
.process-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); }
.process-list li { position: relative; min-width: 0; border-top: 1px solid #aab79d; padding: 24px 28px 0 0; }
.process-list li::before { content: ''; position: absolute; width: 7px; height: 7px; top: -4px; left: 0; background: #60714c; border-radius: 50%; }
.process-list li:last-child { padding-right: 0; }
.process-list li > span { color: var(--muted); font-size: 12px; }
.process-list h3 { margin: 24px 0 14px; font-size: 20px; }
.process-list p { color: var(--muted); font-size: 16px; line-height: 1.7; }

/* Searchable questions */
.faq-section { background: #ebece3; }
.faq-tools { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.3fr); align-items: end; gap: 40px; margin-top: 12px; }
.faq-search label { display: block; margin-bottom: 9px; font-size: 14px; }
.faq-search input { width: 100%; min-height: 54px; border: 1px solid #99a68c; border-radius: 0; background: #f9faf4; color: var(--ink); font-size: 16px; padding: 13px 16px; }
.faq-search input::placeholder { color: #69765d; opacity: 1; }
.faq-filters { display: flex; justify-content: flex-end; align-items: center; gap: 8px; flex-wrap: wrap; }
.faq-filters button { min-height: 44px; padding: 10px 15px; border: 1px solid #9ca991; border-radius: 0; background: transparent; font-size: 13px; transition: background-color 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease); }
.faq-filters button[aria-pressed='true'] { background: var(--ink); color: var(--on-dark); border-color: var(--ink); }
.faq-filters button:not([aria-pressed='true']):hover { background: #dbe3cd; }
.faq-count { margin: 28px 0 14px; font-size: 12px; color: var(--muted); }
.faq-list > details { border-top: 1px solid #bfcbb2; }
.faq-list > details:last-child { border-bottom: 1px solid #bfcbb2; }
.faq-list > details > summary { display: grid; grid-template-columns: 100px minmax(0,1fr) 24px; align-items: center; gap: 24px; list-style: none; min-height: 88px; padding: 25px 0; font-size: 21px; font-weight: 400; letter-spacing: -.025em; line-height: 1.4; }
.faq-list .category, .faq-list summary > small { color: #5a684f; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; font-weight: 500; }
.faq-list summary > span:last-child { color: #53644a; font-size: 26px; text-align: center; line-height: 1; transition: transform 180ms var(--ease); }
.faq-list details[open] > summary > span:last-child { transform: rotate(45deg); }
.faq-list details[open] > summary { padding-bottom: 18px; }
.faq-answer { max-width: 1000px; padding: 0 60px 30px 124px; color: #4b5843; font-size: 16px; line-height: 1.8; }
.faq-answer p { margin-bottom: 16px; }
.faq-answer a { color: #3e5925; text-decoration: underline; }
.faq-answer ul, .faq-answer ol { padding-left: 20px; }
.faq-answer li { margin: 8px 0; }
.faq-sources { margin: 22px 0 0; border-left: 2px solid #a7b893; padding-left: 16px; font-size: 12px; color: #5d6b52; }
.faq-sources ul { margin: 6px 0 0; padding-left: 16px; }
.faq-sources li { margin: 5px 0; }
.faq-sources a { overflow-wrap: anywhere; }
.faq-empty { border-block: 1px solid var(--line); padding: 34px 0; color: var(--muted); }
.faq-footer { margin-top: 34px; color: var(--muted); font-size: 14px; }
.faq-footer a { color: var(--ink); font-weight: 500; }

/* Project brief */
.contact-section { background: var(--ink); color: var(--on-dark); }
.contact-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0,1.1fr); align-items: start; gap: clamp(50px, 7vw, 104px); }
.contact-intro .eyebrow { color: var(--accent); }
.contact-intro h2 { margin-bottom: 28px; }
.contact-intro > .lead { color: var(--muted-dark); font-size: 20px; max-width: 38ch; }
.contact-person { margin: 44px 0 12px; padding-top: 24px; border-top: 1px solid var(--line-dark); }
.contact-person > span { display: block; color: #aebfa0; font-size: 12px; letter-spacing: .13em; margin-bottom: 10px; }
.contact-person strong { display: block; font-size: 19px; font-weight: 500; }
.contact-person p { font-size: 14px; color: var(--muted-dark); margin-top: 3px; }
.contact-link { display: flex; justify-content: space-between; align-items: center; gap: 20px; min-height: 62px; padding-block: 14px; border-bottom: 1px solid var(--line-dark); font-size: clamp(18px, 1.8vw, 23px); letter-spacing: -.02em; text-decoration: none; }
.contact-link:hover { color: var(--accent); }
.contact-link > span { color: var(--accent); font-size: 25px; }
.contact-intro > .small-note { color: var(--muted-dark); margin-top: 24px; max-width: 50ch; }
.contact-form-wrap { background: var(--paper); color: var(--ink); padding: clamp(28px, 3.3vw, 44px); min-width: 0; }
.contact-form-wrap h3 { font-size: 28px; margin-bottom: 12px; }
.form-intro { color: var(--muted); font-size: 14px; line-height: 1.7; margin-bottom: 28px; }
.form-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 20px; margin-bottom: 22px; }
.contact-form-wrap form > .field { margin-bottom: 22px; }
.contact-form-wrap .field label { font-size: 14px; }
.optional { float: right; color: var(--muted); font-size: 12px; font-weight: 400; }
.interest-group { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.interest-group legend { font-size: 14px; margin-bottom: 12px; }
.interest-group label { display: flex; align-items: center; gap: 8px; min-height: 44px; padding: 9px 11px; border: 1px solid #b8c3ad; font-size: 12px; cursor: pointer; }
.interest-group label:has(input:checked) { background: #e5ebd8; border-color: #8fa474; }
.include-calc { display: flex; align-items: flex-start; gap: 12px; background: #e8eddd; padding: 14px; margin: 0 0 22px; font-size: 13px; line-height: 1.6; cursor: pointer; }
.include-calc input { flex: 0 0 18px; margin-top: 2px; }
.form-submit { width: 100%; }
.privacy-note { color: var(--muted); font-size: 12px; line-height: 1.7; margin: 16px 0 0; }
.draft-result { margin-top: 32px; padding-top: 28px; border-top: 1px solid #bcc8af; }
.draft-result .eyebrow { margin-bottom: 12px; font-size: 12px; }
.draft-result h3 { margin-bottom: 20px; }
.draft-result pre { white-space: pre-wrap; overflow-wrap: anywhere; font: 14px/1.75 var(--sans); color: #3d4b32; background: #e9eddf; padding: 20px; margin: 0 0 24px; border-left: 2px solid #9db281; }
.draft-result > .button { width: 100%; }
.copy-button { background: transparent; border: 0; display: block; min-height: 44px; padding: 12px 0 8px; text-decoration: underline; text-underline-offset: 4px; color: #385226; font-size: 14px; }
.site-footer { display: grid; grid-template-columns: 220px minmax(0,1fr) auto; align-items: center; gap: 50px; padding-block: 42px; }
.footer-brand { width: 200px; display: block; }
.footer-brand img { width: 200px; height: auto; }
.site-footer p { font-size: 13px; margin: 0 0 5px; }
.site-footer small { color: var(--muted); font-size: 12px; line-height: 1.6; }
.site-footer > .text-link { font-size: 13px; white-space: nowrap; }

/* Tablet and small desktop */
@media (min-width: 1680px) {
  .hero-copy { padding-left: 80px; }
}
@media (max-width: 1200px) {
  .site-header { gap: 28px; }
  .brand, .brand img { width: 195px; flex-basis: 195px; }
  .site-header nav { gap: 18px; }
  .site-header nav a { font-size: 12px; }
  .site-header .nav-cta { gap: 18px; padding-inline: 14px; }
  .hero-copy { padding-left: var(--gutter); padding-right: 32px; }
  .hero h1 { font-size: clamp(52px, 5.4vw, 66px); }
  .hero-visual { min-height: 590px; }
  .hero-actions { gap: 2px 16px; }
  .hero-actions .button { font-size: 13px; gap: 24px; }
  .hero-actions .text-link { font-size: 13px; }
  .hero-small { margin-top: 20px; }
  .project-answer { grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 24px 36px; }
  .project-answer > .text-link { grid-column: 2; justify-self: start; }
  .calc-result { padding: 30px; }
  .result-main > output { font-size: 54px; }
  .result-stats { gap: 18px; }
  .result-stats strong { font-size: 28px; }
  .faq-tools { gap: 28px; grid-template-columns: minmax(0,1fr) minmax(0,1.2fr); }
  .faq-filters button { padding-inline: 11px; }
  .process-list li { padding-right: 20px; }
  .site-footer { gap: 30px; }
}
@media (max-width: 1000px) {
  .site-header { padding-block: 10px; }
  .menu-toggle { display: block; }
  .site-header nav { display: none; position: absolute; top: 100%; left: 0; right: 0; padding: 20px var(--gutter) 28px; background: var(--paper); border-bottom: 1px solid #a9b39e; box-shadow: 0 12px 16px #171c1810; max-height: calc(100dvh - var(--header-height)); overflow-y: auto; }
  .site-header nav.is-open { display: flex; flex-direction: column; align-items: stretch; gap: 0; }
  .site-header nav a { font-size: 16px; min-height: 54px; border-bottom: 1px solid var(--line); }
  .site-header nav .nav-cta { margin-top: 18px; justify-content: space-between; padding: 14px 18px; border: 0; min-height: 52px; }
  .hero { grid-template-columns: minmax(0,.45fr) minmax(0,.55fr); }
  .hero h1 { font-size: 56px; }
  .hero-copy { padding-top: 40px; padding-bottom: 36px; }
  .hero .eyebrow { font-size: 12px; letter-spacing: .08em; gap: 10px; margin-bottom: 24px; }
  .hero-lead { font-size: 16px; }
  .hero-visual { min-height: 570px; }
  .hero-visual figcaption { padding-inline: 14px; }
  .hero-visual figcaption span { font-size: 12px !important; }
  .intro-section { gap: 50px; }
  .intro-copy { padding-top: 36px; }
  .material-grid { grid-template-columns: minmax(0,1.2fr) minmax(0,1fr); gap: 30px; }
  .material-figure > img { aspect-ratio: 1.05; }
  .material-copy .segmented { margin-bottom: 26px; }
  .material-copy h3 { font-size: 27px; }
  .material-copy #material-text { font-size: 16px; }
  .project-tabs button { font-size: 14px; gap: 10px; padding: 16px; min-height: 94px; }
  .calculator-grid { grid-template-columns: minmax(0,1fr) minmax(0,.92fr); }
  .calculator-form { padding: 26px; }
  .calc-form-heading { display: block; margin-bottom: 22px; }
  .calc-form-heading h3 { font-size: 24px; }
  .calc-form-heading .reset-button { min-height: 36px; }
  .calc-cost-fields { grid-template-columns: 1fr; gap: 22px; }
  .assumption-fields { grid-template-columns: 1fr; }
  .result-main > output { font-size: 48px; }
  .result-stats { grid-template-columns: 1fr; gap: 22px; }
  .result-stats > div { display: flex; justify-content: space-between; gap: 20px; align-items: baseline; }
  .result-stats > div > span { max-width: 60%; margin: 0; }
  .result-stats strong { font-size: 26px; text-align: right; white-space: nowrap; }
  .result-stats small { font-size: 12px; }
  .price-context { gap: 28px; }
  .battery-grid { gap: 60px; }
  .process-list { grid-template-columns: 1fr; }
  .process-list li { border-top: 0; border-left: 1px solid #aab79d; padding: 0 0 28px 28px; display: grid; grid-template-columns: 35px minmax(0,1fr) minmax(0,1.7fr); gap: 20px; align-items: baseline; }
  .process-list li::before { top: 9px; left: -4px; }
  .process-list li:last-child { padding-bottom: 0; }
  .process-list h3 { margin: 0; }
  .process-list p { margin: 0; }
  .faq-tools { grid-template-columns: 1fr; gap: 18px; }
  .faq-search { max-width: 560px; }
  .faq-filters { justify-content: flex-start; }
  .contact-grid { grid-template-columns: minmax(0,.85fr) minmax(0,1.15fr); gap: 36px; }
  .contact-form-wrap { padding: 28px; }
  .form-grid { grid-template-columns: 1fr; gap: 20px; }
  .site-footer { grid-template-columns: 180px minmax(0,1fr); gap: 24px 36px; }
  .footer-brand, .footer-brand img { width: 180px; }
  .site-footer > .text-link { grid-column: 2; justify-self: start; }
}

/* Small screens: normal text, large targets, no sideways scrolling. */
@media (max-width: 760px) {
  .site-header { gap: 20px; min-height: 82px; padding-top: max(9px,env(safe-area-inset-top)); padding-left: max(var(--gutter),env(safe-area-inset-left)); padding-right: max(var(--gutter),env(safe-area-inset-right)); }
  .brand, .brand img { width: 174px; flex-basis: 174px; }
  .hero { display: flex; flex-direction: column; }
  .hero-copy { padding: 34px var(--gutter) 36px; }
  .hero .eyebrow { font-size: 12px; letter-spacing: .1em; margin-bottom: 23px; }
  .hero h1 { font-size: clamp(48px, 11.8vw, 64px); line-height: 1.04; letter-spacing: -.052em; margin-bottom: 24px; }
  .hero-lead { font-size: 17px; line-height: 1.6; max-width: 35ch; margin-bottom: 26px; }
  .hero-actions { gap: 4px 22px; }
  .hero-actions .button { font-size: 14px; gap: 28px; }
  .hero-actions .text-link { min-height: 44px; font-size: 14px; }
  .hero-small { margin-top: 22px; font-size: 12px; }
  .hero-visual { min-height: 0; display: block; }
  .hero-visual img { width: 100%; height: auto; aspect-ratio: 1.33; object-fit: cover; object-position: center; }
  .hero-visual figcaption { padding: 12px var(--gutter); gap: 7px 16px; }
  .hero-visual figcaption span { font-size: 12px !important; }
  .benefit-strip { display: block; }
  .benefit-strip > div { border-right: 0; border-bottom: 1px solid var(--line); gap: 24px; padding: 22px 0; }
  .benefit-strip > div:last-child { border-bottom: 0; }
  .benefit-strip p { font-size: 16px; }
  .benefit-strip br { display: none; }
  .benefit-index { font-size: 12px; width: 22px; flex: 0 0 22px; }
  .intro-section { grid-template-columns: 1fr; gap: 28px; }
  .intro-copy { padding-top: 0; }
  .intro-copy .lead { font-size: 21px; }
  .section-heading { display: block; margin-bottom: 32px; }
  .section-heading .section-intro { margin-top: 24px; font-size: 16px; max-width: 40ch; }
  .section-heading .eyebrow { margin-bottom: 20px; }
  .material-section { padding-block: 64px; }
  .material-grid { grid-template-columns: 1fr; gap: 30px; }
  .material-figure > img { aspect-ratio: 1.25; }
  .material-marker { font-size: 12px; }
  .active-marker { left: 4%; top: 33%; }
  .passive-marker { right: 4%; top: 57%; }
  .material-figure figcaption { padding: 12px 14px; font-size: 12px; }
  .segmented { margin-bottom: 28px; }
  .segmented button { min-height: 48px; padding-inline: 20px; }
  .material-copy h3 { font-size: 30px; }
  .material-copy #material-text { font-size: 16px; }
  .material-definitions { margin-top: 24px; }
  .material-definitions dt { font-size: 16px; }
  .material-definitions dd { font-size: 16px; }
  .project-tabs { grid-template-columns: 1fr; border-bottom: 0; }
  .project-tabs button { font-size: 16px; min-height: 76px; gap: 16px; padding: 18px; border-right: 0; border-bottom: 1px solid var(--line); }
  .project-tabs button > span:first-child { font-size: 12px; }
  .project-answer { display: block; padding-top: 28px; }
  .project-answer h3 { margin-bottom: 18px; font-size: 26px; }
  .project-answer > p { font-size: 16px; margin-bottom: 15px; }
  .project-answer .eyebrow { font-size: 12px; }
  .calculator-grid { grid-template-columns: 1fr; border: 0; }
  .calculator-form { padding: 26px 22px; border: 1px solid #bdc9af; }
  .calc-form-heading { margin-bottom: 18px; }
  .calc-form-heading h3 { font-size: 26px; }
  .calc-form-heading .reset-button { min-height: 44px; }
  .calc-cost-fields { grid-template-columns: 1fr; gap: 24px; }
  .calc-result { position: static; padding: 30px 24px; }
  .result-main > output { font-size: clamp(42px, 11.5vw, 58px); }
  .result-main > span { font-size: 18px; }
  .result-stats { grid-template-columns: 1fr; }
  .result-stats strong { font-size: 30px; }
  .result-stats > div > span { max-width: 58%; }
  .budget-row > div:first-child { font-size: 12px; }
  .result-breakdown summary { font-size: 14px; }
  .result-limit { font-size: 12px; }
  .price-context { grid-template-columns: 1fr; gap: 28px; margin-top: 38px; }
  .price-context > div { padding-top: 22px; }
  .price-context h3 { font-size: 24px; margin: 14px 0; }
  .price-context p { font-size: 16px; }
  .battery-section { padding-block: 66px; }
  .battery-grid { grid-template-columns: 1fr; gap: 28px; }
  .battery-grid > div:last-child { padding-top: 0; }
  .battery-grid .lead { font-size: 21px; }
  .battery-note { gap: 18px; }
  .battery-note p { font-size: 16px; }
  .process-list li { grid-template-columns: 28px minmax(0,1fr); gap: 10px 14px; padding: 0 0 32px 20px; }
  .process-list li h3 { font-size: 24px; }
  .process-list li p { grid-column: 2; font-size: 16px; }
  .faq-tools { gap: 20px; }
  .faq-search input { font-size: 16px; }
  .faq-filters { gap: 8px; }
  .faq-filters button { min-height: 44px; padding-inline: 13px; font-size: 13px; }
  .faq-count { margin-top: 26px; }
  .faq-list > details > summary { grid-template-columns: minmax(0,1fr) 24px; gap: 9px 16px; padding: 22px 0; font-size: 20px; min-height: 92px; }
  .faq-list .category, .faq-list summary > small { grid-column: 1; grid-row: 1; font-size: 12px; }
  .faq-list summary > span:last-child { grid-column: 2; grid-row: 1/3; align-self: center; }
  .faq-answer { padding: 0 0 25px; font-size: 16px; }
  .faq-list details[open] > summary { padding-bottom: 15px; }
  .faq-footer { font-size: 16px; }
  .contact-grid { grid-template-columns: 1fr; gap: 38px; }
  .contact-intro h2 { margin-bottom: 24px; }
  .contact-intro > .lead { font-size: 20px; }
  .contact-person { margin-top: 34px; }
  .contact-link { font-size: 21px; }
  .contact-form-wrap { padding: 28px 22px; }
  .contact-form-wrap h3 { font-size: 26px; }
  .form-grid { grid-template-columns: 1fr; gap: 20px; }
  .form-intro { font-size: 14px; }
  .interest-group label { font-size: 13px; }
  .include-calc { font-size: 13px; padding: 13px; }
  .privacy-note { font-size: 12px; }
  .draft-result pre { font-size: 13px; padding: 16px; }
  .site-footer { grid-template-columns: 1fr; gap: 28px; padding-block: 34px max(34px,env(safe-area-inset-bottom)); }
  .footer-brand, .footer-brand img { width: 190px; }
  .site-footer > .text-link { grid-column: 1; justify-self: start; }
  .site-footer p { font-size: 13px; }
  .site-footer small { font-size: 12px; }
}
@media (max-width: 370px) {
  :root { --gutter: 18px; }
  .brand, .brand img { width: 166px; flex-basis: 166px; }
  .hero h1 { font-size: 48px; }
  .calculator-form, .calc-result, .contact-form-wrap { padding-inline: 20px; }
  .result-stats > div { align-items: start; }
  .result-stats strong { font-size: 27px; }
  .result-main > output { font-size: 43px; }
  .faq-filters button { padding-inline: 11px; }
}
.faq-list .faq-category { color: #5a684f; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; font-weight: 500; }
.calculator-form input[type='number'] { appearance: textfield; -moz-appearance: textfield; }
.calculator-form input[type='number']::-webkit-inner-spin-button, .calculator-form input[type='number']::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
@media (max-width: 760px) {
  .faq-list .faq-category { grid-column: 1; grid-row: 1; font-size: 12px; }
}