/* ============================================================
   VOLSTRUKT — WHY STEEL · v1
   SEO hub. Inherits Home v2 design system. Adds the comparison
   matrix, insurance calculator, FAQ.
   ============================================================ */

:root {
  --vk-green:   #A6DC6E;
  --vk-green-d: #8FC558;
  --vk-grey:    #55575B;
  --vk-grey-2:  #5E6064;
  --vk-grey-3:  #B8BABF;
  --vk-ink:     #2A2B2D;
  --vk-ink-2:   #1F2022;
  --vk-bone:    #F4F2EC;
  --vk-bone-2:  #ECEAE3;
  --vk-white:   #FFFFFF;
  --vk-rule:    #E2E0DA;
  --vk-rule-dk: #3A3B3D;

  /* Honest system-font stack — see home.html for upgrade path notes. */
  --font-display: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body:    'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono:    ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;

  --s-1: 4px;  --s-2: 8px;  --s-3: 16px; --s-4: 24px;
  --s-5: 32px; --s-6: 48px; --s-7: 64px; --s-8: 96px; --s-9: 128px;

  --container: 1720px;
  --gutter: clamp(20px, 4vw, 64px);

  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --dur-base: 280ms;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--vk-bone); color: var(--vk-ink);
  font-family: var(--font-body); font-weight: 400;
  font-size: 16px; line-height: 1.55;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
h1, h2, h3, h4, h5, h6 { margin: 0; }
img, svg { display: block; max-width: 100%; }

.t-label   { font-family: var(--font-mono); font-weight: 700; font-size: 12px; line-height: 1; letter-spacing: 0.25em; text-transform: uppercase; color: var(--vk-grey); }
.green-mark { color: var(--vk-green); }
.green-stop::after { content: "."; color: var(--vk-green); margin-left: -0.05em; }

.section-label {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-mono); font-weight: 700; font-size: 12px;
  line-height: 1; letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--vk-grey);
  margin-bottom: var(--s-5);
}
.section-label::before {
  content: ""; width: 28px; height: 2px; background: var(--vk-green);
}
.section--ink .section-label { color: var(--vk-bone); }

.container {
  width: 100%; max-width: var(--container);
  margin: 0 auto; padding: 0 var(--gutter);
}
.section { padding: var(--s-9) 0; }
.section--bone-deep { background: var(--vk-bone-2); }
.section--ink { background: var(--vk-ink); color: var(--vk-bone); }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 24px;
  font-family: var(--font-body); font-weight: 600; font-size: 14px;
  letter-spacing: 0.01em; line-height: 1;
  border: 2px solid transparent; border-radius: 2px;
  transition: all var(--dur-base) var(--ease);
  background: var(--vk-ink); color: var(--vk-bone);
}
.btn:hover { background: var(--vk-green); color: var(--vk-ink); transform: translateY(-1px); }
.btn--green { background: var(--vk-green); color: var(--vk-ink); }
.btn--green:hover { background: var(--vk-ink); color: var(--vk-bone); }
.btn--ghost { background: transparent; color: var(--vk-ink); border-color: var(--vk-ink); }
.btn--ghost:hover { background: var(--vk-ink); color: var(--vk-bone); transform: none; }
.section--ink .btn--ghost { color: var(--vk-bone); border-color: var(--vk-bone); }
.section--ink .btn--ghost:hover { background: var(--vk-bone); color: var(--vk-ink); }
.btn .arrow { display: inline-block; transition: transform var(--dur-base) var(--ease); }
.btn:hover .arrow, a:hover .arrow { transform: translateX(4px); }

.fig-id {
  font-family: var(--font-mono); font-weight: 700; font-size: 10px;
  letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--vk-grey-2);
}

/* HEADER */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(244, 242, 236, 0.92);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--vk-rule);
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--s-5); height: 72px;
  max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter);
}
.brand-lockup { display: inline-flex; align-items: center; }
.brand-lockup__img { height: 28px; width: auto; display: block; }
.site-nav { display: flex; align-items: center; gap: var(--s-5); }
.site-nav__link {
  font-family: var(--font-body); font-weight: 500; font-size: 14px;
  color: var(--vk-grey);
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  transition: color var(--dur-base) var(--ease), border-color var(--dur-base) var(--ease);
}
.site-nav__link:hover, .site-nav__link--active {
  color: var(--vk-ink); border-bottom-color: var(--vk-green);
}
.site-nav__phone {
  font-family: var(--font-mono); font-weight: 700; font-size: 12px;
  letter-spacing: 0.1em; color: var(--vk-grey);
}
.site-nav__phone:hover { color: var(--vk-ink); }
.site-nav__cta {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px;
  background: var(--vk-ink); color: var(--vk-bone);
  font-family: var(--font-body); font-weight: 600; font-size: 14px;
  border-radius: 2px;
  transition: background var(--dur-base) var(--ease);
}
.site-nav__cta:hover { background: var(--vk-green); color: var(--vk-ink); }
@media (max-width: 1100px) {
  .site-nav__link:nth-child(n+5) { display: none; }
  .site-nav__phone { display: none; }
}
@media (max-width: 700px) {
  .site-nav__link { display: none; }
}

/* PAGE BANNER */
.page-banner {
  border-bottom: 1px solid var(--vk-rule);
  padding: var(--s-4) 0;
  background: var(--vk-bone);
}
.page-banner__inner {
  max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter);
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--s-4); flex-wrap: wrap;
}
.page-banner__crumb {
  font-family: var(--font-mono); font-weight: 700; font-size: 11px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--vk-grey);
}
.page-banner__crumb a { color: var(--vk-grey); border-bottom: 1px solid transparent; }
.page-banner__crumb a:hover { color: var(--vk-ink); border-bottom-color: var(--vk-green); }
.page-banner__crumb .sep { margin: 0 12px; color: var(--vk-rule); }
.page-banner__crumb strong { color: var(--vk-ink); font-weight: 700; }
.page-banner__meta {
  font-family: var(--font-mono); font-weight: 700; font-size: 10px;
  letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--vk-grey-2);
}

/* ============================================================
   HERO — full-bleed split panel (matches homepage pattern)
   ============================================================ */
.hero {
  position: relative;
  border-bottom: 1px solid var(--vk-rule);
}
.hero__split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  /* Hero height — svh prevents iOS Safari URL-bar jump. vh fallback for older browsers. */
  min-height: 85vh;
  min-height: 85svh;
  align-items: stretch;
}
.hero__panel-left {
  background: var(--vk-bone);
  display: flex; align-items: center;
  padding:
    var(--s-8)
    var(--s-8)
    var(--s-8)
    max(var(--gutter), calc((100vw - var(--container)) / 2));
}
.hero__panel-right {
  background: var(--vk-ink);
  border-left: 1px solid var(--vk-rule-dk);
  position: relative;
  overflow: hidden;
  display: flex;
}
.hero__text { max-width: 620px; }
.hero__meta {
  display: flex; gap: var(--s-4); flex-wrap: wrap;
  margin-bottom: var(--s-7);
  font-family: var(--font-mono); font-weight: 700; font-size: 11px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--vk-grey);
}
.hero__meta span:not(:last-child)::after {
  content: "/"; margin-left: var(--s-4); color: var(--vk-rule);
}
.hero__title {
  font-family: var(--font-display); font-weight: 900;
  font-size: clamp(44px, 6.4vw, 84px);
  line-height: 1.02; letter-spacing: -0.025em;
  margin-bottom: var(--s-5);
}
.hero__title em { font-style: normal; color: var(--vk-green-d); }
.hero__sub {
  font-size: 19px; line-height: 1.5;
  color: var(--vk-grey);
  max-width: 480px; margin-bottom: var(--s-4);
}
.hero__sub strong { color: var(--vk-ink); font-weight: 600; }
.hero__actions {
  display: flex; align-items: center; gap: var(--s-5); flex-wrap: wrap;
}
.hero__phone { display: none; }
.hero__phone a { color: var(--vk-ink); border-bottom: 1px solid var(--vk-ink); font-weight: 600; font-size: 13px; text-decoration: none; transition: opacity 200ms; }
.hero__phone a:hover { opacity: 0.65; }
.hero__phone span { color: var(--vk-grey-2); font-size: 12px; }
@media (max-width: 767px) {
  .hero__phone { display: block; margin-top: var(--s-4); }
}
.hero__visual {
  position: relative;
  width: 100%; height: 100%;
  overflow: hidden;
}
.hero__visual svg {
  width: 100%; height: 100%; display: block;
  transition: transform 200ms cubic-bezier(0.2,0.7,0.2,1);
  will-change: transform;
}
.hero__tag {
  position: absolute; bottom: var(--s-4); left: var(--s-4);
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-weight: 700; font-size: 10px;
  letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--vk-bone); opacity: 0.85;
}
.hero__tag::before {
  content: ""; width: 24px; height: 1px; background: var(--vk-green);
}
@media (max-width: 900px) {
  .hero__split { grid-template-columns: 1fr; min-height: auto; }
  .hero__panel-left { padding: var(--s-5) var(--gutter); }
  .hero__meta { margin-bottom: var(--s-4); }
  .hero__panel-right { min-height: 60vh; }
}

/* TRUST BAR — infinite marquee (matches homepage pattern) */
.trust { background: var(--vk-ink); color: var(--vk-bone); padding: var(--s-4) 0; overflow: hidden; }
.trust__marquee {
  position: relative;
  -webkit-mask-image: linear-gradient(to right, transparent 0, black 6%, black 94%, transparent 100%);
          mask-image: linear-gradient(to right, transparent 0, black 6%, black 94%, transparent 100%);
}
.trust__track {
  display: flex; align-items: center;
  gap: var(--s-7);
  width: max-content;
  animation: trust-scroll 45s linear infinite;
  will-change: transform;
}
.trust__marquee:hover .trust__track { animation-play-state: paused; }
@keyframes trust-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.trust__item {
  font-family: var(--font-mono); font-weight: 700; font-size: 11px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: rgba(244, 242, 236, 0.7);
  white-space: nowrap; flex-shrink: 0;
}
.trust__item strong { color: var(--vk-bone); font-weight: 700; margin-right: 6px; }
.trust__dot {
  flex-shrink: 0; color: var(--vk-green); font-size: 14px; line-height: 1;
}
@media (prefers-reduced-motion: reduce) {
  .trust__track { animation: none; justify-content: center; width: 100%; }
}

/* IN-PAGE NAV — anchor links to sections */
.toc { padding: var(--s-6) 0; background: var(--vk-bone); border-bottom: 1px solid var(--vk-rule); }
.toc__inner {
  max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter);
  display: flex; align-items: center; gap: var(--s-4); flex-wrap: wrap;
}
.toc__label {
  font-family: var(--font-mono); font-weight: 700; font-size: 11px;
  letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--vk-grey);
}
.toc__links { display: flex; gap: var(--s-4); flex-wrap: wrap; }
.toc__links a {
  font-family: var(--font-body); font-weight: 500; font-size: 13px;
  color: var(--vk-grey);
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: color var(--dur-base) var(--ease), border-color var(--dur-base) var(--ease);
}
.toc__links a:hover { color: var(--vk-ink); border-bottom-color: var(--vk-green); }

/* ============================================================
   COMPARISON MATRIX — wood vs steel, attribute by attribute
   ============================================================ */
.matrix { padding: var(--s-9) 0; }
.matrix__inner { max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.matrix__header { max-width: 720px; margin-bottom: var(--s-7); }
.matrix__title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.05; letter-spacing: -0.02em;
  margin-bottom: var(--s-4);
}
.matrix__title em { font-style: normal; color: var(--vk-green-d); }
.matrix__sub {
  color: var(--vk-grey); font-size: 19px; line-height: 1.5; max-width: 620px;
}

.matrix__table {
  width: 100%;
  border-collapse: collapse;
  background: var(--vk-white);
  border: 1px solid var(--vk-rule);
}
.matrix__table thead th {
  text-align: left;
  padding: var(--s-4) var(--s-4);
  vertical-align: bottom;
  border-bottom: 1px solid var(--vk-rule);
}
.matrix__table th.col-attr { width: 22%; }
.matrix__table th.col-wood,
.matrix__table th.col-steel { width: 39%; }
.matrix__col-label {
  font-family: var(--font-mono); font-weight: 700; font-size: 11px;
  letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--vk-grey);
  margin-bottom: 6px;
}
.matrix__col-label--steel { color: var(--vk-green-d); }
.matrix__col-name {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.1; letter-spacing: -0.01em;
}
.matrix__table tbody td {
  padding: var(--s-4);
  border-bottom: 1px solid var(--vk-rule);
  vertical-align: top;
}
.matrix__table tbody tr:last-child td { border-bottom: 0; }
.matrix__attr {
  font-family: var(--font-mono); font-weight: 700; font-size: 11px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--vk-ink);
}
.matrix__attr-num {
  display: block;
  color: var(--vk-green-d);
  margin-bottom: 4px;
}
.matrix__cell {
  font-size: 15px; line-height: 1.5;
}
.matrix__cell--wood { color: var(--vk-grey); }
.matrix__cell--steel { color: var(--vk-ink); }
.matrix__cell strong {
  display: block;
  font-family: var(--font-display); font-weight: 700; font-size: 16px;
  letter-spacing: -0.005em;
  margin-bottom: 4px;
}
.matrix__cell--steel strong { color: var(--vk-ink); }
.matrix__cell--wood strong { color: var(--vk-grey); }
.matrix__stat {
  display: inline-block;
  margin-top: 6px;
  padding: 3px 8px;
  font-family: var(--font-mono); font-weight: 700; font-size: 10px;
  letter-spacing: 0.2em; text-transform: uppercase;
}
.matrix__stat--wood { color: var(--vk-grey); background: rgba(85,87,91,0.08); }
.matrix__stat--steel { color: var(--vk-ink); background: var(--vk-green); }

@media (max-width: 800px) {
  /* Stack matrix into cards on mobile */
  .matrix__table thead { display: none; }
  .matrix__table, .matrix__table tbody, .matrix__table tr, .matrix__table td { display: block; width: 100%; }
  .matrix__table tr {
    margin-bottom: var(--s-4);
    border: 1px solid var(--vk-rule);
    background: var(--vk-white);
  }
  .matrix__table td { border-bottom: 1px solid var(--vk-rule); }
  .matrix__table td.matrix__attr-cell {
    background: var(--vk-bone-2);
  }
}

/* ============================================================
   INSURANCE CALCULATOR
   ============================================================ */
.calc { padding: var(--s-9) 0; background: var(--vk-bone-2); border-top: 1px solid var(--vk-rule); border-bottom: 1px solid var(--vk-rule); }
.calc__inner { max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.calc__header { max-width: 720px; margin-bottom: var(--s-7); }
.calc__title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.05; letter-spacing: -0.02em;
  margin-bottom: var(--s-4);
}
.calc__title em { font-style: normal; color: var(--vk-green-d); }
.calc__sub {
  color: var(--vk-grey); font-size: 17px; line-height: 1.55; max-width: 600px;
}
.calc__widget {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-3);
  background: var(--vk-ink);
  color: var(--vk-bone);
  border: 1px solid var(--vk-rule-dk);
}
.calc__inputs {
  padding: var(--s-6);
  display: flex; flex-direction: column;
  gap: var(--s-5);
  border-right: 1px solid var(--vk-rule-dk);
}
.calc__field { display: flex; flex-direction: column; gap: var(--s-3); }
.calc__field label {
  font-family: var(--font-mono); font-weight: 700; font-size: 11px;
  letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--vk-grey-3);
}
.calc__field input[type="number"],
.calc__field input[type="text"] {
  font-family: var(--font-display); font-weight: 900;
  font-size: 36px; letter-spacing: -0.01em;
  background: transparent;
  border: 0; border-bottom: 1px solid var(--vk-rule-dk);
  color: var(--vk-bone);
  padding: 8px 0;
  outline: none;
  -moz-appearance: textfield;
  width: 100%;
}
.calc__field input[type="number"]::-webkit-outer-spin-button,
.calc__field input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.calc__field input[type="number"]:focus,
.calc__field input[type="text"]:focus { border-bottom-color: var(--vk-green); }
.calc__field--money { position: relative; }
.calc__field--money .calc__money-wrap { position: relative; }
.calc__field--money .calc__money-wrap::before {
  content: "$"; position: absolute; left: 0; top: 8px;
  font-family: var(--font-display); font-weight: 900;
  font-size: 36px; letter-spacing: -0.01em; line-height: 1;
  color: var(--vk-bone); pointer-events: none;
}
.calc__field--money input[type="number"],
.calc__field--money input[type="text"] { padding-left: 26px; }
.calc__field-hint {
  font-size: 12px; color: var(--vk-grey-2); line-height: 1.4;
}
.calc__radio-group {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: var(--s-2);
}
.calc__radio {
  position: relative;
  cursor: pointer;
}
.calc__radio input[type="radio"] {
  position: absolute; opacity: 0;
  width: 0; height: 0;
}
.calc__radio-card {
  display: block;
  padding: var(--s-3);
  border: 1px solid var(--vk-rule-dk);
  background: transparent;
  transition: border-color var(--dur-base) var(--ease),
              background var(--dur-base) var(--ease);
}
.calc__radio-card-label {
  font-family: var(--font-mono); font-weight: 700; font-size: 11px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--vk-bone);
  margin-bottom: 4px;
  display: block;
}
.calc__radio-card-hint {
  font-size: 12px;
  color: var(--vk-grey-2);
  overflow-wrap: anywhere;
}
.calc__radio input[type="radio"]:checked + .calc__radio-card {
  border-color: var(--vk-green);
  background: rgba(166, 220, 110, 0.08);
}
.calc__radio input[type="radio"]:checked + .calc__radio-card .calc__radio-card-label {
  color: var(--vk-green);
}

.calc__output {
  padding: var(--s-6);
  display: flex; flex-direction: column;
  gap: var(--s-4);
  background: var(--vk-ink-2);
  position: relative;
}
.calc__output-tag {
  font-family: var(--font-mono); font-weight: 700; font-size: 10px;
  letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--vk-green);
  display: flex; justify-content: space-between; align-items: baseline;
}
.calc__row {
  padding: var(--s-3) 0;
  border-bottom: 1px solid var(--vk-rule-dk);
}
.calc__row-label {
  font-family: var(--font-mono); font-weight: 700; font-size: 11px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--vk-grey-3);
  margin-bottom: 4px;
}
.calc__row-val {
  font-family: var(--font-display); font-weight: 900; font-size: 28px;
  letter-spacing: -0.01em;
  color: var(--vk-bone);
}
.calc__row-val--wood { color: var(--vk-grey-3); }
.calc__row-val--steel { color: var(--vk-green); }
.calc__savings {
  margin-top: var(--s-3);
  padding: var(--s-5);
  border: 1px solid rgba(166,220,110,0.35);
  border-radius: 10px;
  background:
    linear-gradient(180deg, rgba(166,220,110,0.10), rgba(166,220,110,0.03));
  position: relative; overflow: hidden;
}
.calc__savings::before{
  content:""; position:absolute; inset:0; pointer-events:none;
  background: radial-gradient(ellipse 80% 60% at 100% 0%, rgba(166,220,110,0.12), transparent 60%);
}
.calc__savings-hero { position: relative; }
.calc__savings-label {
  font-family: var(--font-mono); font-weight: 700; font-size: 11px;
  letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--vk-green);
  margin-bottom: var(--s-2);
  display: flex; align-items: center; gap: 10px;
}
.calc__savings-label::before{
  content:""; width: 8px; height: 8px; border-radius: 50%;
  background: var(--vk-green); box-shadow: 0 0 0 4px rgba(166,220,110,0.18);
}
.calc__savings-val {
  font-family: var(--font-display); font-weight: 900;
  font-size: clamp(40px, 12vw, 92px);
  letter-spacing: -0.03em;
  line-height: 0.95;
  color: var(--vk-green);
  margin-top: 4px;
}
.calc__savings-period {
  font-family: var(--font-mono); font-weight: 700; font-size: 11px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--vk-grey-3);
  margin-top: 8px;
}
/* ===== CALCULATOR LEAD CAPTURE — "Email me this report" ===== */
.calc__lead {
  margin-top: var(--s-4);
  padding-top: var(--s-4);
  border-top: 1px solid var(--vk-rule-dk);
}
.calc__lead-cta {
  width: 100%;
  display: inline-flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px 18px;
  background: var(--vk-green); color: var(--vk-ink);
  border: 0; border-radius: 0;
  font-family: var(--font-mono); font-weight: 700; font-size: 12px;
  letter-spacing: 0.2em; text-transform: uppercase;
  cursor: pointer;
  transition: background 200ms ease, transform 200ms cubic-bezier(.2,.7,.2,1);
}
.calc__lead-cta:hover { background: var(--vk-bone); }
.calc__lead-cta-arrow { transition: transform 200ms cubic-bezier(.2,.7,.2,1); }
.calc__lead-cta:hover .calc__lead-cta-arrow { transform: translateX(4px); }
.calc__lead-form { margin-top: var(--s-3); padding: var(--s-4); background: rgba(255,255,255,0.04); border: 1px solid var(--vk-rule-dk); position: relative; }
.calc__lead-form[hidden] { display: none; }
.calc__lead-label { display: block; font-family: var(--font-mono); font-weight: 700; font-size: 10px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--vk-grey-2); margin-bottom: 8px; }
.calc__lead-row { display: flex; gap: 8px; }
.calc__lead-row input[type="email"] {
  flex: 1; padding: 12px 14px;
  background: var(--vk-ink-2); color: var(--vk-bone);
  border: 1px solid var(--vk-rule-dk); border-radius: 0;
  font-family: var(--font-body); font-size: 14px;
  outline: none;
  transition: border-color 180ms ease;
}
.calc__lead-row input[type="email"]:focus { border-color: var(--vk-green); }
.calc__lead-submit {
  padding: 12px 18px; background: var(--vk-green); color: var(--vk-ink);
  border: 0; font-family: var(--font-mono); font-weight: 700; font-size: 12px;
  letter-spacing: 0.18em; text-transform: uppercase; cursor: pointer;
  transition: background 200ms ease;
}
.calc__lead-submit:hover { background: var(--vk-bone); }
.calc__lead-submit:disabled { opacity: 0.5; cursor: wait; }
.calc__lead-hint { font-size: 11px; color: var(--vk-grey-3); margin-top: 10px; line-height: 1.5; }
.calc__lead-state { font-size: 13px; margin-top: 10px; min-height: 18px; }
.calc__lead-state.is-success { color: var(--vk-green); font-weight: 600; }
.calc__lead-state.is-error { color: #ff8a7a; font-weight: 600; }

.calc__savings-annual {
  position: relative;
  margin-top: var(--s-4);
  padding-top: var(--s-3);
  border-top: 1px solid rgba(166,220,110,0.18);
  display: flex; justify-content: space-between; align-items: baseline;
  gap: var(--s-3);
}
.calc__savings-annual-lbl {
  font-family: var(--font-mono); font-weight: 700; font-size: 11px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--vk-grey-3);
}
.calc__savings-annual-val {
  font-family: var(--font-display); font-weight: 900;
  font-size: 22px; letter-spacing: -0.01em;
  color: var(--vk-bone);
}
.calc__disclaimer {
  margin-top: var(--s-5);
  padding: var(--s-4);
  background: var(--vk-bone);
  border-left: 2px solid var(--vk-green-d);
  font-size: 13px; line-height: 1.55;
  color: var(--vk-grey);
}
.calc__disclaimer strong { color: var(--vk-ink); }
@media (max-width: 900px) {
  .calc__widget { grid-template-columns: 1fr; }
  /* Let the stacked panels shrink to the container (grid items default to
     min-width:auto, so the 48px-padded panels + big number inputs forced the
     track wider than the viewport on phones). */
  .calc__widget > * { min-width: 0; }
  .calc__inputs, .calc__output { padding: var(--s-5); }
  .calc__inputs { border-right: 0; border-bottom: 1px solid var(--vk-rule-dk); }
  .calc__radio-group { grid-template-columns: 1fr 1fr; }
  /* Let the 2-up risk-zone cards shrink so their text wraps instead of forcing
     the track wider than the viewport on narrow phones (down to 320px). */
  .calc__radio-group > * { min-width: 0; }
}
/* Narrow phones: stack the two risk-zone cards so their longer hint text
   ("CFS noncombustible class") fits instead of spilling past the card edge. */
@media (max-width: 480px) {
  .calc__radio-group { grid-template-columns: 1fr; }
}

/* ============================================================
   DEEP DIVES — 4 long-form claim blocks (lifespan, fire,
   precision, sustainability) — each scrollable as its own thing
   ============================================================ */
.dives { padding: var(--s-9) 0; }
.dives__inner { max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.dives__header { max-width: 720px; margin-bottom: var(--s-7); }
.dives__title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.05; letter-spacing: -0.02em;
  margin-bottom: var(--s-4);
}

.dive {
  display: grid;
  grid-template-columns: 100px 1fr 1fr;
  gap: var(--s-7);
  padding: var(--s-7) 0;
  border-top: 1px solid var(--vk-rule);
  align-items: start;
}
.dive:last-child { border-bottom: 1px solid var(--vk-rule); }
.dive__num {
  font-family: var(--font-mono); font-weight: 700; font-size: 11px;
  letter-spacing: 0.25em; color: var(--vk-green-d);
}
.dive__heading {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(24px, 2.6vw, 32px);
  line-height: 1.1; letter-spacing: -0.01em;
}
.dive__heading em { font-style: normal; color: var(--vk-green-d); }
.dive__body { color: var(--vk-grey); font-size: 16px; line-height: 1.6; }
.dive__body p { margin-bottom: var(--s-3); }
.dive__body p strong { color: var(--vk-ink); font-weight: 600; }
.dive__stat-strip {
  display: flex; gap: var(--s-4); flex-wrap: wrap;
  margin-top: var(--s-3);
  padding-top: var(--s-3);
  border-top: 1px solid var(--vk-rule);
}
.dive__stat { }
.dive__stat-num {
  font-family: var(--font-display); font-weight: 900; font-size: 22px;
  letter-spacing: -0.01em;
}
.dive__stat-num em { font-style: normal; color: var(--vk-green-d); }
.dive__stat-label {
  font-family: var(--font-mono); font-weight: 700; font-size: 10px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--vk-grey);
}
@media (max-width: 900px) {
  .dive { grid-template-columns: 1fr; gap: var(--s-4); padding: var(--s-5) 0; }
}

/* ============================================================
   FAQ — accordion
   ============================================================ */
.faq { padding: var(--s-9) 0; background: var(--vk-bone-2); border-top: 1px solid var(--vk-rule); border-bottom: 1px solid var(--vk-rule); }
.faq__inner { max-width: 880px; margin: 0 auto; padding: 0 var(--gutter); }
.faq__header { margin-bottom: var(--s-7); }
.faq__title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.05; letter-spacing: -0.02em;
  margin-bottom: var(--s-4);
}
.faq__sub { color: var(--vk-grey); font-size: 19px; line-height: 1.5; }
.faq__list { list-style: none; }
.faq-item {
  border-top: 1px solid var(--vk-rule);
  cursor: pointer;
}
.faq__list .faq-item:last-child { border-bottom: 1px solid var(--vk-rule); }
.faq-item__q {
  display: flex; justify-content: space-between; align-items: center;
  padding: var(--s-5) 0;
  gap: var(--s-4);
}
.faq-item__q h3 {
  font-family: var(--font-display); font-weight: 700;
  font-size: 19px; line-height: 1.3; letter-spacing: -0.005em;
}
.faq-item__toggle {
  width: 28px; height: 28px;
  border: 1px solid var(--vk-ink);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: background var(--dur-base) var(--ease),
              border-color var(--dur-base) var(--ease);
}
.faq-item__toggle::before {
  content: "+";
  font-family: var(--font-mono); font-weight: 700; font-size: 16px;
  line-height: 1; color: var(--vk-ink);
}
.faq-item.open .faq-item__toggle {
  background: var(--vk-green); border-color: var(--vk-green);
}
.faq-item.open .faq-item__toggle::before { content: "−"; }
.faq-item__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--dur-base) var(--ease);
  color: var(--vk-grey); font-size: 16px; line-height: 1.6;
}
.faq-item.open .faq-item__a {
  max-height: 500px;
  padding-bottom: var(--s-5);
}
.faq-item__a p { margin-bottom: var(--s-3); }
.faq-item__a p:last-child { margin-bottom: 0; }

/* ============================================================
   ROUTING BLOCK — what to build next
   ============================================================ */
.routing { padding: var(--s-9) 0; }
.routing__inner { max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.routing__header { max-width: 720px; margin-bottom: var(--s-7); }
.routing__title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.05; letter-spacing: -0.02em;
  margin-bottom: var(--s-4);
}
.routing__sub {
  color: var(--vk-grey); font-size: 19px; line-height: 1.5; max-width: 600px;
}
.routing__grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: var(--s-3);
}
.route-card {
  padding: var(--s-5);
  background: var(--vk-white);
  border: 1px solid var(--vk-rule);
  display: flex; flex-direction: column;
  transition: border-color var(--dur-base) var(--ease),
              transform var(--dur-base) var(--ease);
}
.route-card:hover { border-color: var(--vk-ink); transform: translateY(-2px); }
.route-card__intent {
  font-family: var(--font-mono); font-weight: 700; font-size: 10px;
  letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--vk-green-d);
  margin-bottom: var(--s-3);
}
.route-card h3 {
  font-family: var(--font-display); font-weight: 700;
  font-size: 22px; line-height: 1.15; letter-spacing: -0.005em;
  margin-bottom: var(--s-3);
}
.route-card p { color: var(--vk-grey); font-size: 14px; line-height: 1.55; margin-bottom: var(--s-4); }
.route-card__cta {
  margin-top: auto;
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-body); font-weight: 600; font-size: 13px;
  color: var(--vk-ink);
  padding-top: var(--s-3);
  border-top: 1px solid var(--vk-rule);
}
@media (max-width: 1000px) { .routing__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .routing__grid { grid-template-columns: 1fr; } }

/* FOOTER */
.site-footer {
  background: var(--vk-ink); color: var(--vk-bone);
  border-top: 1px solid var(--vk-rule-dk);
  padding: var(--s-7) 0 var(--s-5);
}
.site-footer__inner { max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.site-footer__grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: var(--s-5); margin-bottom: var(--s-7);
}
.site-footer__col-title {
  font-family: var(--font-mono); font-weight: 700; font-size: 11px;
  letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--vk-green); margin-bottom: var(--s-3);
}
.site-footer__links { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.site-footer__links a { color: #B8BABF; font-size: 14px; transition: color var(--dur-base) var(--ease); }
.site-footer__links a:hover { color: var(--vk-bone); }
.site-footer__brand .brand-lockup { margin-bottom: var(--s-4); }
.site-footer__brand p { color: #B8BABF; font-size: 14px; max-width: 320px; line-height: 1.55; }
.site-footer__bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: var(--s-4);
  border-top: 1px solid var(--vk-rule-dk);
  font-family: var(--font-mono); font-weight: 700; font-size: 11px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--vk-grey-2);
}
@media (max-width: 900px) { .site-footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) {
  .site-footer__grid { grid-template-columns: 1fr; }
  .site-footer__bottom { flex-direction: column; gap: var(--s-3); align-items: flex-start; }
  .site-footer__bottom > div { flex-wrap: wrap; }
}

/* === UNIFIED HAMBURGER NAV (auto-injected) === */
.vk-hamburger {
  display: none;
  flex-direction: column; justify-content: center; gap: 5px;
  width: 40px; height: 40px; padding: 8px;
  background: none; border: none; cursor: pointer;
  border-radius: 2px;
  margin-left: var(--s-3);
}
.vk-hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--vk-ink);
  transition: transform var(--dur-base) var(--ease),
              opacity var(--dur-base) var(--ease);
  transform-origin: center;
}
.vk-mobile-menu {
  display: none;
  flex-direction: column;
  background: var(--vk-bone);
  border-top: 1px solid var(--vk-rule);
  padding: var(--s-4) 0;
  position: fixed;
  top: 73px; left: 0; right: 0;
  height: calc(100vh - 73px); height: calc(100dvh - 73px);   /* full-height below the sticky header, which is the fixed-positioning containing block (it has backdrop-filter) */
  overflow-y: auto; -webkit-overflow-scrolling: touch;
  z-index: 99;
  box-shadow: 0 8px 24px rgba(42,43,45,0.08);
}
.vk-mobile-menu a {
  display: block;
  padding: var(--s-3) var(--gutter);
  font-family: var(--font-body); font-weight: 500; font-size: 16px;
  color: var(--vk-grey);
  border-bottom: 1px solid var(--vk-rule);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease);
}
.vk-mobile-menu a:hover { color: var(--vk-ink); }
.vk-mobile-menu .vk-mobile-cta {
  margin: var(--s-4) var(--gutter) 0;
  display: block;
  padding: 14px var(--s-4);
  background: var(--vk-green); color: var(--vk-ink);
  text-align: center; font-weight: 600;
  border-radius: 2px; border-bottom: none;
}
@media (max-width: 1100px) {
  .vk-hamburger { display: flex; }
}


/* === Footer social row (auto-injected) === */
.site-footer__social {
  display: flex; align-items: center; gap: var(--s-3);
  flex-wrap: wrap;
  max-width: var(--container);
  margin: var(--s-5) auto 0;
  padding: var(--s-5) var(--gutter) 0;
  border-top: 1px solid var(--vk-rule-dk);
}
.site-footer__social-label {
  font-family: var(--font-mono); font-weight: 700; font-size: 11px;
  letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--vk-grey);
  margin-right: var(--s-3);
}
.social-icon {
  /* 44×44 — meets WCAG SC 2.5.5 AAA + Apple HIG 44pt minimum touch target */
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px;
  border: 1px solid var(--vk-rule-dk);
  border-radius: 50%;
  color: #B8BABF;
  transition: color var(--dur-base) var(--ease),
              border-color var(--dur-base) var(--ease),
              background var(--dur-base) var(--ease);
}
.social-icon svg { width: 16px; height: 16px; }
.social-icon:hover {
  color: var(--vk-ink);
  background: var(--vk-green);
  border-color: var(--vk-green);
}


/* === SCROLL ANIMATION SYSTEM === */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
.anim-fade-up { opacity: 0; transform: translateY(24px); }
.js-anim-ready .anim-fade-up { opacity: 1; transform: none; transition: opacity 600ms cubic-bezier(0.2,0.7,0.2,1), transform 600ms cubic-bezier(0.2,0.7,0.2,1); }
.section-label::before { transform-origin: left center; }


/* Hero photo */
.hero__photo { position: absolute; inset: 0; display: block; overflow: hidden; }
.hero__photo-img { width: 100%; height: 100%; object-fit: cover; object-position: center; transform-origin: 50% 50%; animation: hero-kenburns 22s cubic-bezier(0.4, 0, 0.2, 1) infinite alternate; }
@keyframes hero-kenburns { from { transform: scale(1.0) translate(0, 0); } to { transform: scale(1.08) translate(-1.5%, -1.2%); } }
@media (prefers-reduced-motion: reduce) { .hero__photo-img { animation: none; } }



.scorecard{
  position:relative;background:var(--vk-ink);color:var(--vk-bone);
  padding:clamp(72px,9vw,140px) 0 clamp(56px,7vw,110px);
  border-top:1px solid var(--vk-rule-dk);overflow:hidden;
}
.scorecard::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(ellipse 60% 70% at 22% 30%, rgba(166,220,110,0.10), transparent 60%),
    radial-gradient(ellipse 40% 60% at 88% 80%, rgba(255,255,255,0.03), transparent 60%);
}
.scorecard__inner{
  position:relative;max-width:var(--container);margin:0 auto;
  padding:0 var(--gutter);display:flex;flex-direction:column;gap:clamp(40px,5vw,72px);
}
.scorecard__head{display:grid;grid-template-columns:1fr auto;gap:var(--s-4);align-items:end;}
.scorecard__eyebrow{
  font-family:var(--font-mono);font-weight:700;font-size:11px;letter-spacing:0.25em;
  text-transform:uppercase;color:var(--vk-green);margin-bottom:var(--s-3);
}
.scorecard__eyebrow::before{content:"";display:inline-block;width:24px;height:1px;background:var(--vk-green);margin-right:12px;vertical-align:middle;}
.scorecard__title{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(44px,6.4vw,108px);line-height:0.95;letter-spacing:-0.035em;margin:0;
}
.scorecard__title em{font-style:normal;color:var(--vk-green);}
.scorecard__title .stop{color:var(--vk-green);}
.scorecard__kicker{
  max-width:34ch;font-size:14px;line-height:1.55;color:var(--vk-grey-3);
  margin:0;padding-bottom:8px;
}

/* The dominance bar — earns the full width */
.scorecard__bar{
  position:relative;width:100%;height:clamp(96px,11vw,144px);
  border-radius:14px;overflow:hidden;
  background:rgba(255,255,255,0.04);
  border:1px solid var(--vk-rule-dk);
  display:flex;
}
.scorecard__fill{
  position:relative;display:flex;align-items:center;
  transform-origin:left center;
  transition:none;
}
.scorecard__fill--cfs{
  flex:0 0 var(--cfs-w,77.78%);
  background:linear-gradient(90deg, rgba(166,220,110,0.92), rgba(143,197,88,0.85));
  color:var(--vk-ink);
  padding:0 clamp(22px,2.2vw,36px);
  justify-content:flex-start;
  clip-path:inset(0 0 0 100%);
  transition:clip-path 1100ms cubic-bezier(.2,.7,.2,1);
}
.scorecard__fill--wood{
  flex:1;
  background:linear-gradient(90deg, rgba(85,87,91,0.55), rgba(85,87,91,0.75));
  color:var(--vk-bone);
  padding:0 clamp(18px,1.8vw,28px);
  justify-content:flex-end;
  clip-path:inset(0 100% 0 0);
  transition:clip-path 1100ms cubic-bezier(.2,.7,.2,1) 180ms;
}
.scorecard.is-in .scorecard__fill--cfs{clip-path:inset(0 0 0 0);}
.scorecard.is-in .scorecard__fill--wood{clip-path:inset(0 0 0 0);}
.scorecard__fill::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(90deg, rgba(0,0,0,0.05) 0 1px, transparent 1px 64px);
  opacity:0.6;
}
.scorecard__big{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(56px,9vw,128px);line-height:1;letter-spacing:-0.04em;
}
.scorecard__big sup{
  font-size:0.32em;font-weight:700;vertical-align:top;
  margin-left:6px;opacity:0.55;letter-spacing:0;
}
.scorecard__fill-meta{
  display:flex;flex-direction:column;gap:6px;margin-left:clamp(18px,2vw,32px);
}
.scorecard__fill--wood .scorecard__fill-meta{margin-left:0;margin-right:clamp(14px,1.6vw,24px);text-align:right;}
.scorecard__fill--wood .scorecard__fill-inner{flex-direction:row-reverse;}
.scorecard__fill-inner{display:flex;align-items:center;}
.scorecard__fill-lbl{
  font-family:var(--font-mono);font-weight:700;font-size:11px;
  letter-spacing:0.22em;text-transform:uppercase;opacity:0.78;
}
.scorecard__fill-sub{font-size:13px;line-height:1.4;opacity:0.78;max-width:24ch;}

/* Category chip rows — the receipts */
.scorecard__cats-wrap{
  display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,4vw,72px);
  padding-top:clamp(8px,1vw,16px);
}
.scorecard__cats-col h3{
  font-family:var(--font-mono);font-weight:700;font-size:11px;letter-spacing:0.22em;
  text-transform:uppercase;color:var(--vk-grey-2);margin:0 0 var(--s-3);
  display:flex;align-items:center;gap:10px;
}
.scorecard__cats-col h3::before{content:"";width:8px;height:8px;border-radius:50%;}
.scorecard__cats-col--cfs h3::before{background:var(--vk-green);box-shadow:0 0 0 4px rgba(166,220,110,0.18);}
.scorecard__cats-col--wood h3::before{background:var(--vk-grey-2);box-shadow:0 0 0 4px rgba(138,140,144,0.18);}
.scorecard__chips{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px;}
.scorecard__chips li{
  font-size:13px;line-height:1;padding:10px 14px;border-radius:999px;
  border:1px solid var(--vk-rule-dk);color:var(--vk-grey-3);
  background:rgba(255,255,255,0.02);
  opacity:0;transform:translateY(8px);
  transition:opacity 400ms ease, transform 400ms ease, background 200ms, color 200ms, border-color 200ms;
}
.scorecard.is-in .scorecard__chips li{opacity:1;transform:translateY(0);}
.scorecard__cats-col--cfs .scorecard__chips li{border-color:rgba(166,220,110,0.28);color:#D6EFB4;}
.scorecard__cats-col--cfs .scorecard__chips li:hover{background:rgba(166,220,110,0.12);color:var(--vk-green);}
.scorecard__cats-col--wood .scorecard__chips li:hover{color:var(--vk-bone);border-color:var(--vk-grey-2);}
/* stagger */
.scorecard__chips li:nth-child(1){transition-delay:280ms;}
.scorecard__chips li:nth-child(2){transition-delay:340ms;}
.scorecard__chips li:nth-child(3){transition-delay:400ms;}
.scorecard__chips li:nth-child(4){transition-delay:460ms;}
.scorecard__chips li:nth-child(5){transition-delay:520ms;}
.scorecard__chips li:nth-child(6){transition-delay:580ms;}
.scorecard__chips li:nth-child(7){transition-delay:640ms;}

.scorecard__bridge{
  margin:0;font-size:clamp(15px,1.25vw,18px);line-height:1.55;
  color:var(--vk-bone);max-width:62ch;
}
.scorecard__bridge a{
  color:var(--vk-green);text-decoration:none;
  border-bottom:1px solid rgba(166,220,110,0.4);
  padding-bottom:1px;transition:border-color 200ms;
}
.scorecard__bridge a:hover{border-bottom-color:var(--vk-green);}

.scorecard__footer{
  display:flex;justify-content:space-between;align-items:center;gap:var(--s-4);
  padding-top:var(--s-4);border-top:1px solid var(--vk-rule-dk);
  font-family:var(--font-mono);font-weight:700;font-size:11px;
  letter-spacing:0.18em;text-transform:uppercase;color:var(--vk-grey-2);
}
.scorecard__footer a{color:var(--vk-grey-2);text-decoration:none;transition:color 200ms;}
.scorecard__footer a:hover{color:var(--vk-green);}
.scorecard__footer-note{opacity:0.7;font-weight:600;letter-spacing:0.14em;}

@media(max-width:900px){
  .scorecard__head{grid-template-columns:1fr;}
  .scorecard__kicker{padding-bottom:0;}
  .scorecard__bar{height:auto;flex-direction:column;border-radius:12px;}
  .scorecard__fill--cfs,.scorecard__fill--wood{flex:1 1 auto;padding:22px;}
  .scorecard__fill--wood{justify-content:flex-start;}
  .scorecard__fill--wood .scorecard__fill-inner{flex-direction:row;}
  .scorecard__fill--wood .scorecard__fill-meta{text-align:left;margin-left:18px;margin-right:0;}
  .scorecard__cats-wrap{grid-template-columns:1fr;gap:32px;}
  .scorecard__footer{flex-direction:column;align-items:flex-start;gap:12px;}
}
@media (prefers-reduced-motion: reduce){
  .scorecard__fill--cfs,.scorecard__fill--wood{clip-path:none !important;transition:none !important;}
  .scorecard__chips li{opacity:1 !important;transform:none !important;transition:none !important;}
}

/* ============== STICKY TOC + SCROLLSPY ============== */
.toc {
  position: sticky; top: 0; z-index: 60;
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  background: rgba(244, 242, 236, 0.92);
  transition: box-shadow 200ms ease, padding 200ms ease;
}
.toc.is-stuck { box-shadow: 0 1px 0 var(--vk-rule), 0 8px 24px rgba(42,43,45,0.06); padding: var(--s-4) 0; }
.toc__links a {
  position: relative;
}
.toc__links a.is-active {
  color: var(--vk-ink);
  border-bottom-color: var(--vk-green);
}
.toc__links a.is-active::before {
  content: ""; position: absolute; left: -10px; top: 50%;
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--vk-green); transform: translateY(-50%);
}

/* ============== MATRIX ROW HOVER + WINNER ARROW ============== */
.matrix__table tbody tr {
  transition: background 240ms ease;
}
.matrix__cell { position: relative; transition: background 240ms ease, opacity 240ms ease; }
.matrix__cell--steel::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0;
  width: 2px; background: var(--vk-green);
  transform: scaleY(0); transform-origin: top center;
  transition: transform 360ms cubic-bezier(.2,.7,.2,1);
}
@media (hover: hover) and (pointer: fine) {
  .matrix__table tbody tr:hover .matrix__cell--wood { opacity: 0.55; }
  .matrix__table tbody tr:hover .matrix__cell--steel { background: rgba(166,220,110,0.06); }
  .matrix__table tbody tr:hover .matrix__cell--steel::before { transform: scaleY(1); }
  .matrix__table tbody tr:hover .matrix__win-arrow { opacity: 1; transform: translate(0, -50%); }
}
.matrix__win-arrow {
  position: absolute; left: -2px; top: 50%;
  transform: translate(-12px, -50%);
  font-size: 18px; color: var(--vk-green); font-weight: 900;
  opacity: 0; pointer-events: none;
  transition: opacity 280ms ease, transform 280ms cubic-bezier(.2,.7,.2,1);
  line-height: 1;
}

/* ============== CALC RANGE SLIDER ============== */
.calc__slider {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 4px;
  background: rgba(255,255,255,0.08);
  border-radius: 2px;
  outline: none;
  margin-top: 12px;
  cursor: pointer;
}
.calc__slider::-webkit-slider-runnable-track {
  height: 4px; background: linear-gradient(90deg, var(--vk-green) 0%, var(--vk-green) var(--fill, 0%), rgba(255,255,255,0.08) var(--fill, 0%));
  border-radius: 2px;
}
.calc__slider::-moz-range-track {
  height: 4px; background: rgba(255,255,255,0.08); border-radius: 2px;
}
.calc__slider::-moz-range-progress {
  height: 4px; background: var(--vk-green); border-radius: 2px;
}
.calc__slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--vk-green); border: 2px solid var(--vk-ink-2);
  margin-top: -7px; cursor: grab;
  box-shadow: 0 0 0 4px rgba(166,220,110,0.18);
  transition: transform 140ms ease;
}
.calc__slider::-webkit-slider-thumb:active { cursor: grabbing; transform: scale(1.1); }
.calc__slider::-moz-range-thumb {
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--vk-green); border: 2px solid var(--vk-ink-2);
  cursor: grab; box-shadow: 0 0 0 4px rgba(166,220,110,0.18);
}

/* ============== CALC DOMINANCE METER ============== */
.calc__meter {
  margin-top: var(--s-3);
  padding-top: var(--s-3);
  border-top: 1px solid var(--vk-rule-dk);
}
.calc__meter-label {
  font-family: var(--font-mono); font-weight: 700; font-size: 10px;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--vk-grey-2); margin-bottom: 8px;
  display: flex; justify-content: space-between;
}
.calc__meter-bar {
  position: relative; height: 8px; border-radius: 4px;
  background: rgba(255,255,255,0.06); overflow: hidden;
}
.calc__meter-fill {
  position: absolute; top: 0; left: 0; bottom: 0;
  background: linear-gradient(90deg, var(--vk-green), var(--vk-green-d));
  width: 0%;
  transition: width 600ms cubic-bezier(.2,.7,.2,1);
  border-radius: 4px;
}
.calc__meter-pct {
  font-family: var(--font-display); font-weight: 900;
  font-size: 13px; color: var(--vk-green);
  margin-top: 8px; text-align: right;
}

/* ============== DEEP DIVE HOVER ============== */
.dive {
  transition: background 280ms ease;
  position: relative;
}
.dive::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0;
  width: 2px; background: var(--vk-green);
  transform: scaleY(0); transform-origin: top center;
  transition: transform 400ms cubic-bezier(.2,.7,.2,1);
}
@media (hover: hover) and (pointer: fine) {
  .dive:hover { background: rgba(166,220,110,0.025); }
  .dive:hover::before { transform: scaleY(1); }
}

/* ============== FAQ GREEN CHECKMARK ============== */
.faq-item__a p:first-of-type::before {
  content: "✓"; display: inline-flex; align-items: center; justify-content: center;
  width: 18px; height: 18px; margin-right: 10px;
  border-radius: 50%; background: var(--vk-green);
  color: var(--vk-ink); font-size: 11px; font-weight: 900;
  vertical-align: middle; line-height: 1;
  transform: translateY(-1px);
}

/* ============== HERO CTA ARROW SLIDE ============== */
.btn .arrow { display: inline-block; transition: transform 220ms cubic-bezier(.2,.7,.2,1); }
.btn:hover .arrow { transform: translateX(5px); }
.hero__actions a .arrow { transition: transform 220ms cubic-bezier(.2,.7,.2,1); display: inline-block; }
.hero__actions a:hover .arrow { transform: translateX(4px); }

/* ============== SECTION ACCENT MARKS (small green corner brace on h2's) ============== */
.matrix__title, .calc__title, .dives__title, .faq__title, .routing__title {
  position: relative;
}
.matrix__title::before, .calc__title::before, .dives__title::before,
.faq__title::before, .routing__title::before {
  content: ""; position: absolute;
  left: -2px; top: -14px;
  width: 18px; height: 2px; background: var(--vk-green);
}
.matrix__title::after, .calc__title::after, .dives__title::after,
.faq__title::after, .routing__title::after {
  content: ""; position: absolute;
  left: -2px; top: -14px;
  width: 2px; height: 18px; background: var(--vk-green);
}

/* ============== STICKY CTA ============== */
.vk-sticky-cta {
  position: fixed; bottom: max(24px, env(safe-area-inset-bottom)); right: max(24px, env(safe-area-inset-right)); z-index: 70;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 22px; border-radius: 999px;
  background: var(--vk-ink); color: var(--vk-bone);
  font-family: var(--font-mono); font-weight: 700; font-size: 12px;
  letter-spacing: 0.18em; text-transform: uppercase;
  text-decoration: none;
  box-shadow: 0 10px 30px rgba(42,43,45,0.25), 0 2px 6px rgba(42,43,45,0.15);
  border: 1px solid rgba(166,220,110,0.2);
  opacity: 0; transform: translateY(20px) scale(0.96);
  transition: opacity 360ms cubic-bezier(.2,.7,.2,1), transform 360ms cubic-bezier(.2,.7,.2,1), background 200ms;
  pointer-events: none;
}
.vk-sticky-cta.is-visible { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }
.vk-sticky-cta:hover { background: var(--vk-green); color: var(--vk-ink); }
.vk-sticky-cta::before {
  content: ""; width: 8px; height: 8px; border-radius: 50%;
  background: var(--vk-green); flex-shrink: 0;
  animation: vk-cta-pulse 2.4s ease-in-out infinite;
}
.vk-sticky-cta:hover::before { background: var(--vk-ink); animation: none; }
@keyframes vk-cta-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(166,220,110,0.4); }
  50% { box-shadow: 0 0 0 8px rgba(166,220,110,0); }
}
@media (max-width: 600px) {
  .vk-sticky-cta { bottom: max(16px, env(safe-area-inset-bottom)); right: max(16px, env(safe-area-inset-right)); padding: 12px 18px; font-size: 11px; }
}
@media (prefers-reduced-motion: reduce) {
  .vk-sticky-cta::before { animation: none; }
  .vk-sticky-cta { transition: opacity 200ms ease; transform: none !important; }
}

/* ============== PAGE-WIDE MOTION SYSTEM ============== */
/* Scroll progress bar — pinned to top of viewport */
.vk-progress{
  position:fixed;top:0;left:0;right:0;height:2px;z-index:9999;
  background:transparent;pointer-events:none;
}
.vk-progress__bar{
  height:100%;width:0%;background:var(--vk-green);
  transform-origin:left center;will-change:width;
}

/* Section seam reveal — fade-up on each major section as it enters viewport */
.vk-reveal{opacity:0;transform:translateY(24px);transition:opacity 700ms cubic-bezier(.2,.7,.2,1),transform 700ms cubic-bezier(.2,.7,.2,1);}
.vk-reveal.is-revealed{opacity:1;transform:translateY(0);}

/* Matrix row reveal — staggered fade-up when table enters viewport */
.matrix__table tbody tr{opacity:0;transform:translateY(14px);transition:opacity 520ms cubic-bezier(.2,.7,.2,1),transform 520ms cubic-bezier(.2,.7,.2,1);}
.matrix__table.is-revealed tbody tr{opacity:1;transform:translateY(0);}
.matrix__table.is-revealed tbody tr:nth-child(1){transition-delay:60ms;}
.matrix__table.is-revealed tbody tr:nth-child(2){transition-delay:130ms;}
.matrix__table.is-revealed tbody tr:nth-child(3){transition-delay:200ms;}
.matrix__table.is-revealed tbody tr:nth-child(4){transition-delay:270ms;}
.matrix__table.is-revealed tbody tr:nth-child(5){transition-delay:340ms;}
.matrix__table.is-revealed tbody tr:nth-child(6){transition-delay:410ms;}
.matrix__table.is-revealed tbody tr:nth-child(7){transition-delay:480ms;}
.matrix__table.is-revealed tbody tr:nth-child(8){transition-delay:550ms;}

/* Calc value pulse — subtle flash when rolling number completes */
.calc__row-val.is-pulse,.calc__savings-val.is-pulse,.calc__savings-annual-val.is-pulse{
  animation: vk-num-pulse 480ms ease-out;
}
@keyframes vk-num-pulse{
  0%{filter:brightness(1);}
  50%{filter:brightness(1.25);}
  100%{filter:brightness(1);}
}

@media (prefers-reduced-motion: reduce){
  .vk-reveal,.matrix__table tbody tr{opacity:1 !important;transform:none !important;transition:none !important;}
  .calc__row-val,.calc__savings-val,.calc__savings-annual-val{animation:none !important;}
}


    .claim-vid{background:var(--vk-ink,#2A2B2D);padding:var(--s-8,96px) 0;}
    .claim-vid__inner{max-width:920px;margin:0 auto;padding:0 var(--gutter,24px);text-align:center;}
    .claim-vid__copy{margin-bottom:var(--s-5,32px);}
    .claim-vid__copy .tag{display:inline-block;font-family:var(--font-mono,ui-monospace,monospace);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--vk-ink,#2A2B2D);background:var(--vk-green,#A6DC6E);font-weight:700;padding:4px 12px;border-radius:100px;margin-bottom:14px;}
    .claim-vid__copy h2{color:#fff;font-size:clamp(1.6rem,3.2vw,2.5rem);font-weight:700;letter-spacing:-0.02em;line-height:1.1;margin-bottom:10px;}
    .claim-vid__copy p{color:rgba(255,255,255,.6);max-width:32rem;margin:0 auto;}
    .vk-yt{position:relative;aspect-ratio:16/9;border-radius:2px;overflow:hidden;cursor:pointer;background:#1a1b1d;border:1px solid rgba(255,255,255,.1);box-shadow:0 24px 60px -24px rgba(0,0,0,.6);}
    .vk-yt>img{width:100%;height:100%;object-fit:cover;display:block;}
    .vk-yt__scrim{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.12),rgba(0,0,0,0) 38%,rgba(0,0,0,.55));}
    .vk-yt__title{position:absolute;left:16px;right:16px;bottom:14px;color:#fff;font-weight:700;font-size:14px;line-height:1.3;text-align:left;text-shadow:0 1px 6px rgba(0,0,0,.7);}
    .vk-yt__dur{position:absolute;right:10px;top:10px;background:rgba(0,0,0,.8);color:#fff;font-size:12px;font-weight:600;padding:2px 7px;border-radius:2px;}
    .vk-yt__play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:72px;height:72px;border:0;border-radius:50%;background:var(--vk-green,#A6DC6E);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:transform .2s;box-shadow:0 8px 30px rgba(0,0,0,.4);}
    .vk-yt:hover .vk-yt__play{transform:translate(-50%,-50%) scale(1.08);}
    .vk-yt iframe{position:absolute;inset:0;width:100%;height:100%;border:0;}