/* ================================================================
   Sternholt v4 — Design System
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400;1,500&family=Plus+Jakarta+Sans:wght@300;400;500;600&display=swap');

/* ---- Tokens ---- */
:root {
  --black:     #0a0a0a;
  --warm-dark: #111110;
  --white:     #ffffff;
  --off-white: #f5f3ef;
  --mid:       #888880;
  --light:     #d8d8d4;
  --dim:       rgba(255,255,255,0.55);

  --type-display: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --type-body:    'Plus Jakarta Sans', 'Helvetica Neue', Arial, sans-serif;

  --space-1:   4px;
  --space-2:   8px;
  --space-3:  16px;
  --space-4:  24px;
  --space-5:  32px;
  --space-6:  48px;
  --space-7:  72px;
  --space-8:  96px;
  --space-9: 140px;

  --max-w:  1280px;
  --gutter:   48px;

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

@media (max-width: 768px) {
  :root {
    --gutter:  20px;
    --space-9: 80px;
    --space-8: 64px;
    --space-7: 48px;
  }
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--type-body);
  background: var(--black);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }

a { color: inherit; text-decoration: none; }

/* ---- Layout ---- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ---- Utilities ---- */
.label {
  font-family: var(--type-body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mid);
}

/* ================================================================
   Navigation
   ================================================================ */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 28px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(to bottom, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0) 100%);
  transition: background 0.4s var(--ease), padding 0.4s var(--ease);
}

.nav.scrolled {
  background: rgba(10, 10, 10, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding-top: 18px;
  padding-bottom: 18px;
}

.nav-logo { display: flex; align-items: center; }
.nav-logo img { height: 48px; width: auto; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  font-family: var(--type-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--white);
  transition: opacity 0.2s;
}

.nav-links a:hover { opacity: 0.6; }

.nav-links .nav-cta a {
  border: 1px solid rgba(255,255,255,0.35);
  padding: 9px 22px;
  border-radius: 2px;
  color: var(--white);
  transition: background 0.2s, border-color 0.2s;
}

.nav-links .nav-cta a:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.6);
}

/* Mobile toggle */
.nav-toggle {
  display: none;
  position: relative;
  z-index: 201;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--white);
  margin: 6px 0;
  transition: transform 0.3s var(--ease), opacity 0.3s;
}

.nav.mobile-open .nav-toggle span:first-child {
  transform: translateY(3.75px) rotate(45deg);
}
.nav.mobile-open .nav-toggle span:last-child {
  transform: translateY(-3.75px) rotate(-45deg);
}

@media (max-width: 1100px) and (min-width: 901px) {
  .nav-links { gap: 22px; }
}

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }

  .nav.mobile-open .nav-links {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--black);
    align-items: center;
    justify-content: center;
    gap: 28px;
    z-index: 200;
  }

  .nav.mobile-open .nav-links a {
    font-size: 28px;
    letter-spacing: 0;
    font-family: var(--type-display);
    font-weight: 400;
    color: var(--white);
  }

  .nav.mobile-open .nav-links .nav-cta a {
    border: none;
    padding: 0;
    font-size: 28px;
  }
}

/* ================================================================
   Buttons
   ================================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--type-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-decoration: none;
  cursor: pointer;
  border: none;
  background: none;
  padding: 0;
  transition: gap 0.25s var(--ease), opacity 0.2s, background 0.2s, border-color 0.2s;
}

.btn-ghost-white {
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.45);
  padding: 15px 30px;
  border-radius: 2px;
}

.btn-ghost-white:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.8);
  gap: 14px;
}

.btn-solid-white {
  color: var(--black);
  background: var(--white);
  padding: 17px 38px;
  border-radius: 2px;
}

.btn-solid-white:hover {
  background: var(--off-white);
  gap: 14px;
}

.btn-text-white { color: var(--white); }
.btn-text-white:hover { gap: 14px; opacity: 0.65; }

.btn-text-mid { color: var(--mid); }
.btn-text-mid:hover { gap: 14px; color: var(--white); }

.btn-arrow::after {
  content: '→';
  font-weight: 300;
  font-size: 1.05em;
  line-height: 1;
}

/* ================================================================
   Sections
   ================================================================ */

.section { padding: var(--space-9) 0; }

/* ================================================================
   Hero
   ================================================================ */

.hero {
  position: relative;
  height: 100vh;
  min-height: 640px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center 35%;
  background-repeat: no-repeat;
  z-index: 0;
  transform: scale(1.01);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0,0,0,0.05) 0%,
    rgba(0,0,0,0.12) 35%,
    rgba(0,0,0,0.58) 75%,
    rgba(0,0,0,0.78) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: calc(var(--max-w) + 2 * var(--gutter));
  margin: 0 auto;
  padding: 0 var(--gutter) var(--space-8);
}

.hero-h1 {
  font-family: var(--type-display);
  font-size: clamp(60px, 9vw, 112px);
  font-weight: 400;
  line-height: 0.95;
  color: var(--white);
  margin-bottom: var(--space-5);
  max-width: 700px;
  letter-spacing: -0.01em;
}

.hero-sub {
  font-family: var(--type-body);
  font-size: clamp(15px, 1.4vw, 18px);
  font-weight: 400;
  color: rgba(255,255,255,0.7);
  max-width: 420px;
  line-height: 1.65;
  margin-bottom: var(--space-6);
}

/* ================================================================
   Project Grid
   ================================================================ */

.projects-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px;
}

.project-item {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--warm-dark);
}

.project-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease);
}

.project-item:hover img { transform: scale(1.04); }

.project-item-caption {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: var(--space-3) var(--space-4);
  background: linear-gradient(to top, rgba(0,0,0,0.65), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.project-item:hover .project-item-caption { opacity: 1; }

.project-item-caption .location {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--white);
}

.projects-footer {
  margin-top: var(--space-4);
  text-align: right;
}

@media (max-width: 640px) {
  .projects-grid { grid-template-columns: 1fr; }
  .project-item-caption { opacity: 1; }
}

/* ================================================================
   Identity Statement
   ================================================================ */

.identity-section { background: var(--warm-dark); }

.identity-text {
  font-family: var(--type-display);
  font-size: clamp(28px, 3.8vw, 58px);
  font-weight: 400;
  line-height: 1.25;
  color: var(--white);
  max-width: 900px;
}

.identity-text em {
  font-style: italic;
  color: var(--dim);
}

/* ================================================================
   Material Door
   ================================================================ */

.material-door-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 520px;
}

.material-door-img {
  position: relative;
  overflow: hidden;
}

.material-door-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease);
}

.material-door-inner:hover .material-door-img img {
  transform: scale(1.03);
}

.material-door-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-8) var(--space-7);
  background: var(--warm-dark);
}

.material-door-h2 {
  font-family: var(--type-display);
  font-size: clamp(28px, 3vw, 48px);
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: var(--space-4);
  color: var(--white);
}

.material-door-body {
  font-size: 17px;
  color: rgba(255,255,255,0.6);
  line-height: 1.75;
  margin-bottom: var(--space-5);
  max-width: 400px;
}

@media (max-width: 768px) {
  .material-door-inner { grid-template-columns: 1fr; }
  .material-door-img { height: 300px; }
  .material-door-copy { padding: var(--space-6) var(--gutter); }
}

/* ================================================================
   Process
   ================================================================ */

.process-section { background: var(--black); }

.process-header { margin-bottom: var(--space-6); }

.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.process-step {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: var(--space-5);
}

.process-num {
  font-family: var(--type-display);
  font-size: 80px;
  font-weight: 300;
  color: rgba(255,255,255,0.1);
  line-height: 0.85;
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.process-title {
  font-family: var(--type-display);
  font-size: 30px;
  font-weight: 500;
  color: var(--white);
  margin-bottom: var(--space-2);
  line-height: 1.2;
}

.process-body {
  font-size: 15px;
  color: rgba(255,255,255,0.55);
  line-height: 1.75;
}

.process-link-row {
  margin-top: var(--space-7);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: var(--space-5);
  display: flex;
  justify-content: flex-end;
}

@media (max-width: 768px) {
  .process-grid { grid-template-columns: 1fr; gap: var(--space-5); }
  .process-num { font-size: 60px; }
}

/* ================================================================
   CTA Close
   ================================================================ */

.cta-close {
  background: var(--warm-dark);
  text-align: center;
}

.cta-close-h2 {
  font-family: var(--type-display);
  font-size: clamp(40px, 5.5vw, 80px);
  font-weight: 400;
  line-height: 1.05;
  color: var(--white);
  margin-bottom: var(--space-4);
  letter-spacing: -0.01em;
}

.cta-close-sub {
  font-size: 17px;
  color: rgba(255,255,255,0.55);
  max-width: 400px;
  margin: 0 auto var(--space-6);
  line-height: 1.7;
}

/* ================================================================
   Material Page — Product Catalog
   ================================================================ */

/* Category filter tabs */
.filter-bar {
  display: flex;
  gap: 4px;
  margin-bottom: var(--space-7);
  flex-wrap: wrap;
}

.filter-tab {
  font-family: var(--type-body);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 9px 20px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 2px;
  background: none;
  color: rgba(255,255,255,0.5);
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.filter-tab:hover {
  border-color: rgba(255,255,255,0.4);
  color: var(--white);
}

.filter-tab.active {
  background: var(--white);
  border-color: var(--white);
  color: var(--black);
}

/* Product grid */
.product-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px;
}

.product-card {
  background: var(--warm-dark);
  display: flex;
  flex-direction: column;
  transition: opacity 0.3s;
}

.product-card.hidden {
  display: none;
}

.product-card-photo {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.product-card-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.product-card:hover .product-card-photo img {
  transform: scale(1.04);
}

.product-card-body {
  padding: var(--space-6);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.product-card-mfr {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mid);
}

.product-card-category {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.25);
  padding: 3px 8px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 2px;
}

.product-card-name {
  font-family: var(--type-display);
  font-size: clamp(28px, 3vw, 44px);
  font-weight: 400;
  color: var(--white);
  line-height: 1.05;
  margin-bottom: var(--space-3);
}

.product-card-desc {
  font-size: 15px;
  color: rgba(255,255,255,0.55);
  line-height: 1.75;
  margin-bottom: var(--space-5);
  flex: 1;
}

/* Key stats row inside card */
.product-card-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(255,255,255,0.07);
  margin-bottom: var(--space-5);
}

.product-card-stat {
  background: var(--warm-dark);
  padding: 16px 0;
}

.product-card-stat-value {
  font-family: var(--type-display);
  font-size: 22px;
  font-weight: 400;
  color: var(--white);
  line-height: 1;
  margin-bottom: 4px;
}

.product-card-stat-label {
  font-size: 11px;
  color: var(--mid);
  font-weight: 500;
  line-height: 1.3;
}

/* Expandable specs — native details/summary */
.product-specs {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: var(--space-4);
  margin-top: auto;
}

.product-specs summary {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mid);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color 0.2s;
  user-select: none;
}

.product-specs summary::after {
  content: '+';
  font-size: 16px;
  font-weight: 300;
  transition: transform 0.2s;
}

.product-specs[open] summary::after {
  content: '−';
}

.product-specs summary:hover { color: var(--white); }

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--space-4);
}

.spec-table tbody tr { border-top: 1px solid rgba(255,255,255,0.06); }

.spec-table tbody td {
  padding: 12px 0;
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  line-height: 1.5;
  vertical-align: top;
}

.spec-table tbody td:first-child {
  color: var(--mid);
  width: 48%;
  padding-right: 16px;
}

/* System / Warranty / Cert — shared components */
.material-section-h2 {
  font-family: var(--type-display);
  font-size: clamp(28px, 3vw, 44px);
  font-weight: 400;
  color: var(--white);
  margin-bottom: var(--space-6);
}

/* What you actually get — two column */
.product-what-you-get {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-9);
  align-items: center;
}

.wyg-list {
  list-style: none;
  padding: 0;
  margin: var(--space-6) 0 0;
}

.wyg-list li {
  font-size: 16px;
  color: rgba(255,255,255,0.65);
  line-height: 1.7;
  padding: var(--space-4) 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  gap: var(--space-3);
}

.wyg-list li::before {
  content: '→';
  color: var(--mid);
  flex-shrink: 0;
  margin-top: 1px;
}

@media (max-width: 900px) {
  .product-what-you-get {
    grid-template-columns: 1fr;
    gap: var(--space-7);
  }
}

.system-diagram { width: 100%; max-width: 860px; display: block; }

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

.warranty-block { padding: 48px var(--space-6); }

.warranty-number {
  font-family: var(--type-display);
  font-size: clamp(44px, 5vw, 72px);
  font-weight: 400;
  color: var(--white);
  line-height: 1;
  margin-bottom: var(--space-3);
}

.warranty-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: var(--space-2);
}

.warranty-desc {
  font-size: 14px;
  color: rgba(255,255,255,0.4);
  line-height: 1.7;
}

.cert-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.cert-item {
  padding: 18px 0;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.cert-item:nth-child(odd) {
  padding-right: 48px;
  border-right: 1px solid rgba(255,255,255,0.08);
}

.cert-item:nth-child(even) { padding-left: 48px; }

.cert-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 3px;
}

.cert-standard { font-size: 13px; color: var(--mid); }

@media (max-width: 900px) {
  .product-grid { grid-template-columns: 1fr; }
  .warranty-grid { grid-template-columns: 1fr; gap: 3px; }
  .cert-grid { grid-template-columns: 1fr; }
  .cert-item:nth-child(odd) { border-right: none; padding-right: 0; }
  .cert-item:nth-child(even) { padding-left: 0; }
}

@media (max-width: 640px) {
  .product-card-stats { grid-template-columns: 1fr 1fr; }
  .warranty-block { padding: 36px var(--space-4); }
}

/* ================================================================
   Work / Projects Page
   ================================================================ */

.work-header {
  padding-top: 160px;
  padding-bottom: var(--space-8);
  background: var(--black);
}

.work-h1 {
  font-family: var(--type-display);
  font-size: clamp(40px, 6vw, 86px);
  font-weight: 400;
  line-height: 1.05;
  color: var(--white);
  margin-bottom: var(--space-5);
  letter-spacing: -0.01em;
}

.work-intro p {
  font-size: 17px;
  color: rgba(255,255,255,0.55);
  line-height: 1.8;
  max-width: 640px;
  margin-bottom: var(--space-3);
}

.work-intro p:last-child { margin-bottom: 0; }

/* Project entries */
.project {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
  background: var(--black);
}

.project-location {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mid);
  padding: 0 0 var(--space-3);
}

.project-hero {
  width: 100%;
  overflow: hidden;
}

.project-hero img {
  width: 100%;
  display: block;
  object-fit: cover;
  max-height: 82vh;
  cursor: zoom-in;
  transition: transform 0.5s var(--ease);
}

.project-hero img:hover { transform: scale(1.01); }

.project-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px;
  margin-top: 3px;
}

.project-grid img {
  width: 100%;
  display: block;
  object-fit: cover;
  aspect-ratio: 4 / 3;
  cursor: zoom-in;
  transition: transform 0.5s var(--ease);
}

.project-grid img:hover { transform: scale(1.02); }

/* ================================================================
   Process Page
   ================================================================ */

.process-steps {
  padding: var(--space-7) 0 var(--space-9);
}

.process-steps .process-step {
  display: grid;
  grid-template-columns: 64px 1fr 2fr;
  gap: 0 var(--space-7);
  padding: var(--space-7) 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  align-items: start;
}

.process-steps .process-step:last-child {
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.step-num {
  font-family: var(--type-display);
  font-size: 14px;
  font-weight: 400;
  color: var(--mid);
  padding-top: 6px;
  letter-spacing: 0.04em;
}

.step-title {
  font-family: var(--type-display);
  font-size: clamp(22px, 2.2vw, 34px);
  font-weight: 400;
  color: var(--white);
  line-height: 1.1;
}

.step-desc {
  font-size: 16px;
  color: rgba(255,255,255,0.55);
  line-height: 1.85;
}

@media (max-width: 800px) {
  .process-steps .process-step {
    grid-template-columns: 48px 1fr;
    grid-template-rows: auto auto;
  }
  .step-desc {
    grid-column: 2;
    margin-top: var(--space-3);
  }
}

@media (max-width: 560px) {
  .process-steps .process-step {
    grid-template-columns: 1fr;
  }
  .step-num { padding-top: 0; }
  .step-desc { grid-column: 1; }
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0,0,0,0.97);
  cursor: zoom-out;
  align-items: center;
  justify-content: center;
}

.lightbox.open { display: flex; }

.lightbox img {
  max-width: 92vw;
  max-height: 92vh;
  object-fit: contain;
  display: block;
}

.lightbox-close {
  position: absolute;
  top: 28px;
  right: 36px;
  color: rgba(255,255,255,0.45);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.2s;
  font-family: var(--type-body);
}

.lightbox-close:hover { color: var(--white); }

@media (max-width: 640px) {
  .project-grid { grid-template-columns: 1fr; }
  .project-hero img { max-height: 60vw; }
}

/* ================================================================
   Article / Prose Pages (About, Process, etc.)
   ================================================================ */

.page-header {
  padding-top: 160px;
  padding-bottom: var(--space-9);
  background: var(--black);
}

.page-h1 {
  font-family: var(--type-display);
  font-size: clamp(40px, 6vw, 86px);
  font-weight: 400;
  line-height: 1.05;
  color: var(--white);
  max-width: 900px;
  letter-spacing: -0.01em;
}

.page-sub {
  font-size: 17px;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
  max-width: 560px;
  margin-top: var(--space-4);
}

.prose-section {
  padding: var(--space-9) 0;
}

.prose-section-inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-7);
  align-items: start;
}

.prose-h2 {
  font-family: var(--type-display);
  font-size: clamp(28px, 3vw, 44px);
  font-weight: 400;
  line-height: 1.15;
  color: var(--white);
  margin-bottom: var(--space-4);
}

.prose-body p {
  font-size: 17px;
  color: rgba(255,255,255,0.65);
  line-height: 1.8;
  margin-bottom: var(--space-4);
}

.prose-body p:last-child { margin-bottom: 0; }

.prose-body a {
  color: rgba(255,255,255,0.65);
  border-bottom: 1px solid rgba(255,255,255,0.25);
  transition: color 0.2s, border-color 0.2s;
}

.prose-body a:hover {
  color: var(--white);
  border-color: rgba(255,255,255,0.6);
}

/* Full-bleed photo break */
.photo-break {
  width: 100%;
  aspect-ratio: 21 / 9;
  overflow: hidden;
}

.photo-break img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Founder split */
.founder-section {
  padding: var(--space-9) 0;
  background: var(--warm-dark);
}

.founder-inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--space-7);
  align-items: start;
}

.founder-photo {
  overflow: hidden;
  aspect-ratio: 3 / 4;
  background: rgba(255,255,255,0.05);
}

.founder-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.founder-copy { padding-top: var(--space-3); }

.founder-copy p {
  font-size: 17px;
  color: rgba(255,255,255,0.65);
  line-height: 1.8;
  margin-bottom: var(--space-4);
}

.founder-copy p:last-child { margin-bottom: 0; }

.founder-byline {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mid);
  margin-top: var(--space-5);
}

/* Page close CTA */
.page-close {
  padding: var(--space-9) 0;
  background: var(--black);
}

.page-close-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  flex-wrap: wrap;
}

.page-close-text {
  font-family: var(--type-display);
  font-size: clamp(24px, 3vw, 44px);
  font-weight: 400;
  color: var(--white);
  max-width: 560px;
  line-height: 1.2;
}

@media (max-width: 900px) {
  .prose-section-inner { grid-template-columns: 1fr; gap: var(--space-4); }
  .founder-inner { grid-template-columns: 1fr; }
  .founder-photo { aspect-ratio: 4 / 3; }
  .photo-break { aspect-ratio: 16 / 9; }
  .page-close-inner { flex-direction: column; align-items: flex-start; }
}

/* ================================================================
   Contact / Form
   ================================================================ */

.contact-page {
  min-height: 100vh;
  padding-top: 120px;
  padding-bottom: var(--space-9);
  background: var(--black);
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: start;
}

.contact-headline {
  font-family: var(--type-display);
  font-size: clamp(40px, 5vw, 72px);
  font-weight: 400;
  line-height: 1.05;
  color: var(--white);
  margin-bottom: var(--space-5);
  letter-spacing: -0.01em;
}

.contact-sub {
  font-size: 17px;
  color: rgba(255,255,255,0.55);
  line-height: 1.75;
  max-width: 380px;
  margin-bottom: var(--space-7);
}

.contact-direct {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.contact-direct a {
  font-size: 15px;
  color: rgba(255,255,255,0.5);
  transition: color 0.2s;
}

.contact-direct a:hover { color: var(--white); }

/* Form */
.contact-form { display: flex; flex-direction: column; gap: var(--space-4); }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-field { display: flex; flex-direction: column; gap: 8px; }

.form-label {
  font-family: var(--type-body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mid);
}

.form-input,
.form-textarea {
  width: 100%;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.14);
  color: var(--white);
  font-family: var(--type-body);
  font-size: 16px;
  font-weight: 400;
  padding: 15px 18px;
  border-radius: 2px;
  outline: none;
  transition: border-color 0.2s, background 0.2s;
  appearance: none;
  -webkit-appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder { color: rgba(255,255,255,0.2); }

.form-input:focus,
.form-textarea:focus {
  border-color: rgba(255,255,255,0.45);
  background: rgba(255,255,255,0.06);
}

.form-textarea { resize: vertical; min-height: 140px; line-height: 1.6; }

.form-note {
  font-size: 13px;
  color: rgba(255,255,255,0.3);
  margin-top: var(--space-1);
}

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

/* Step form: one question at a time. Steps only hide once JS adds .is-stepped */
.step { border: none; display: flex; flex-direction: column; gap: var(--space-4); }
.step + .step { margin-top: var(--space-6); }
.step-question {
  font-family: var(--type-display);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 400;
  line-height: 1.15;
  color: var(--white);
  margin-bottom: var(--space-4);
  padding: 0;
}
.step-progress, .step-back, .step-next { display: none; }

.step-form.is-stepped .step { display: none; margin-top: 0; }
.step-form.is-stepped .step.is-active { display: flex; }
.step-form.is-stepped .step-progress { display: flex; }
.step-form.is-stepped .step-next { display: inline-flex; align-self: flex-start; }
.step-form.is-stepped .step-back { display: inline-block; }
.step-form.is-stepped .step-back[hidden],
.step-form.is-stepped .step-next[hidden] { display: none; }

.step-progress { align-items: center; gap: var(--space-3); margin-bottom: var(--space-2); }
.step-count { font-size: 11px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--mid); white-space: nowrap; }
.step-bar { flex: 1; height: 1px; background: rgba(255,255,255,0.14); position: relative; }
.step-bar-fill { position: absolute; left: 0; top: 0; bottom: 0; width: 20%; background: var(--white); transition: width 0.4s var(--ease); }

.choice-list { display: flex; flex-direction: column; gap: 10px; }
.choice { position: relative; display: block; cursor: pointer; }
.choice input { position: absolute; opacity: 0; pointer-events: none; }
.choice span {
  display: block;
  padding: 18px 20px;
  font-size: 16px;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.04);
  border-radius: 2px;
  transition: border-color 0.2s, background 0.2s, color 0.2s;
}
.choice:hover span { border-color: rgba(255,255,255,0.45); }
.choice input:focus-visible + span { border-color: var(--white); }
.choice input:checked + span { background: var(--white); border-color: var(--white); color: var(--black); }

.field-error { font-size: 13px; color: #e0a596; }
.field-error:empty { display: none; }
.form-input[aria-invalid="true"] { border-color: #e0a596; }

.note-toggle {
  align-self: flex-start;
  background: none; border: none; padding: 0; cursor: pointer;
  font-family: var(--type-body); font-size: 14px; color: rgba(255,255,255,0.55);
  border-bottom: 1px solid rgba(255,255,255,0.2);
  display: none;
}
.note-toggle:hover { color: var(--white); }
.step-form.is-stepped .note-toggle { display: inline-block; }
.step-form.is-stepped .note-field:not(.is-open) { display: none; }

.step-back {
  align-self: flex-start;
  margin-top: var(--space-5);
  background: none; border: none; padding: 0; cursor: pointer;
  font-family: var(--type-body); font-size: 14px; color: var(--mid);
}
.step-back::before { content: '← '; }
.step-back:hover { color: var(--white); }

.form-status { font-size: 14px; color: #e0a596; line-height: 1.6; }
.form-status:empty { display: none; }
.form-status a { color: var(--white); border-bottom: 1px solid rgba(255,255,255,0.4); }
#submitBtn[disabled] { opacity: 0.5; cursor: wait; }

/* Confirmation */
.contact-inner[hidden], .sent[hidden] { display: none; }
.sent { max-width: 760px; outline: none; }
.sent .label { margin-bottom: var(--space-4); }
.sent-lead { max-width: 520px; margin-bottom: var(--space-6); }
.next-steps { list-style: none; display: flex; flex-direction: column; margin-bottom: var(--space-7); }
.next-steps li {
  display: grid;
  grid-template-columns: 56px 1fr;
  column-gap: var(--space-3);
  padding: var(--space-5) 0;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.next-steps li:last-child { border-bottom: 1px solid rgba(255,255,255,0.1); }
.next-num { grid-row: span 2; font-family: var(--type-display); font-size: 22px; color: var(--mid); line-height: 1.3; }
.next-title { font-family: var(--type-display); font-size: 26px; font-weight: 400; color: var(--white); line-height: 1.25; margin-bottom: var(--space-2); }
.next-steps p { font-size: 16px; line-height: 1.7; color: rgba(255,255,255,0.6); max-width: 560px; }
.sent-summary { margin-bottom: var(--space-6); }
.sent-summary .label { margin-bottom: var(--space-3); }
.sent-summary dl { display: grid; grid-template-columns: 140px 1fr; gap: 10px var(--space-4); font-size: 15px; }
.sent-summary dt { color: var(--mid); }
.sent-summary dd { color: var(--white); overflow-wrap: anywhere; }
.sent-help { font-size: 15px; color: rgba(255,255,255,0.55); margin-bottom: var(--space-5); }
.sent-help a { color: var(--white); border-bottom: 1px solid rgba(255,255,255,0.3); }
.nowrap { white-space: nowrap; }

@media (max-width: 900px) {
  .contact-inner { grid-template-columns: 1fr; gap: var(--space-6); }
}

@media (max-width: 560px) {
  .form-row { grid-template-columns: 1fr; }
  .contact-page { padding-top: 100px; }
  .next-steps li { grid-template-columns: 40px 1fr; }
  .sent-summary dl { grid-template-columns: 1fr; gap: 2px; }
  .sent-summary dd { margin-bottom: 10px; }
}

/* ================================================================
   Footer
   ================================================================ */

.footer {
  background: var(--black);
  border-top: 1px solid rgba(255,255,255,0.07);
  padding: var(--space-7) 0 var(--space-6);
}

.footer-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  gap: var(--space-5);
  flex-wrap: wrap;
}

.footer-logo img { height: 20px; width: auto; }

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
  list-style: none;
}

.footer-nav a {
  font-size: 13px;
  font-weight: 500;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.02em;
  transition: color 0.2s;
}

.footer-nav a:hover { color: var(--white); }

.footer-divider {
  border: none;
  border-top: 1px solid rgba(255,255,255,0.07);
  margin-bottom: var(--space-4);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.footer-areas {
  font-size: 12px;
  color: rgba(255,255,255,0.35);
  max-width: 480px;
  line-height: 1.6;
}

.footer-legal {
  font-size: 12px;
  color: rgba(255,255,255,0.25);
  text-align: right;
  max-width: 420px;
  line-height: 1.6;
}

@media (max-width: 640px) {
  .footer-top { flex-direction: column; }
  .footer-bottom { flex-direction: column; }
  .footer-legal { text-align: left; }
}

/* ── FAQ page ─────────────────────────────────────────── */
.faq-list {
  border-top: 1px solid rgba(255,255,255,0.08);
}

.faq-item {
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.faq-item summary {
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-q {
  font-family: var(--type-display);
  font-size: clamp(20px, 2vw, 30px);
  font-weight: 400;
  color: var(--white);
  padding: var(--space-6) 0;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-5);
  line-height: 1.2;
}

.faq-q::after {
  content: '+';
  font-family: var(--type-body);
  font-size: 22px;
  font-weight: 300;
  color: var(--mid);
  flex-shrink: 0;
  transition: transform 0.25s var(--ease);
}

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

.faq-a {
  padding-bottom: var(--space-7);
  max-width: 680px;
}

.faq-a p {
  font-size: 17px;
  color: rgba(255,255,255,0.55);
  line-height: 1.85;
}

/* ── Pricing page ─────────────────────────────────────── */
.pricing-frame {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-9);
  align-items: start;
}

.pricing-lede {
  font-size: 17px;
  color: rgba(255,255,255,0.6);
  line-height: 1.8;
  margin-top: var(--space-5);
  max-width: 560px;
}

.pricing-intro {
  font-size: 17px;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
  max-width: 600px;
  margin-top: var(--space-5);
}

.shortcut-list {
  list-style: none;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.shortcut {
  padding: var(--space-5) 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.shortcut .label { margin-bottom: var(--space-2); }

.shortcut p {
  font-family: var(--type-display);
  font-size: clamp(20px, 1.8vw, 26px);
  line-height: 1.3;
  color: rgba(255,255,255,0.55);
}

.shortcut-fair .label { color: var(--white); }
.shortcut-fair p { color: var(--white); }

/* Comparison tables: rows collapse into cards on small screens */
.compare-wrap { margin-top: var(--space-7); }

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.5;
  text-align: left;
}

.compare-table thead th {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mid);
  padding: 0 var(--space-3) var(--space-3);
  border-bottom: 1px solid rgba(255,255,255,0.15);
  vertical-align: bottom;
}

.compare-table th[scope="row"] {
  font-family: var(--type-display);
  font-size: clamp(19px, 1.6vw, 24px);
  font-weight: 400;
  line-height: 1.2;
  color: var(--white);
}

.compare-table tbody th,
.compare-table tbody td {
  padding: var(--space-4) var(--space-3);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  vertical-align: top;
}

.compare-table td { color: rgba(255,255,255,0.6); }

.compare-table thead th:first-child,
.compare-table tbody th { padding-left: 0; }

.roof-table tr.is-ours th,
.roof-table tr.is-ours td { background: rgba(255,255,255,0.05); color: var(--white); }
.roof-table tr.is-ours th { padding-left: var(--space-4); }

.row-note {
  display: block;
  margin-top: var(--space-1);
  font-family: var(--type-body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mid);
}

.tier {
  font-size: 15px;
  letter-spacing: 0.12em;
  color: var(--white);
  white-space: nowrap;
}

.tier-off { color: rgba(255,255,255,0.18); }

.tier-note {
  display: block;
  margin-top: var(--space-1);
  font-size: 12px;
  color: rgba(255,255,255,0.6);
}

.ways-table th[scope="row"] { width: 30%; }
.ways-table td { width: 35%; }
.ways-table tr.is-fit td { color: var(--white); }

.compare-footnote {
  margin-top: var(--space-5);
  max-width: 760px;
  font-family: var(--type-display);
  font-size: clamp(20px, 1.8vw, 26px);
  line-height: 1.3;
  color: rgba(255,255,255,0.7);
}

.number-factors {
  list-style: none;
  counter-reset: factor;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0 var(--space-6);
  border-top: 1px solid rgba(255,255,255,0.08);
}

.number-factors li {
  counter-increment: factor;
  display: flex;
  gap: var(--space-4);
  align-items: baseline;
  padding: var(--space-5) 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  font-family: var(--type-display);
  font-size: clamp(20px, 1.8vw, 26px);
  line-height: 1.2;
}

.number-factors li::before {
  content: counter(factor, decimal-leading-zero);
  font-size: 14px;
  color: var(--mid);
}

.pricing-factors {
  margin-top: var(--space-8);
  border-top: 1px solid rgba(255,255,255,0.08);
}

.pricing-factor {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 0 var(--space-7);
  padding: var(--space-7) 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  align-items: start;
}

.pricing-factor-num {
  font-family: var(--type-display);
  font-size: 14px;
  font-weight: 400;
  color: var(--mid);
  padding-top: 5px;
  letter-spacing: 0.04em;
}

.pricing-factor-title {
  font-family: var(--type-display);
  font-size: clamp(20px, 1.8vw, 28px);
  font-weight: 400;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: var(--space-3);
}

.pricing-factor-desc {
  font-size: 16px;
  color: rgba(255,255,255,0.5);
  line-height: 1.8;
}

.incentive-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: rgba(255,255,255,0.06);
}

.incentive-item {
  background: var(--warm-dark);
  padding: var(--space-7);
}

.incentive-name {
  font-family: var(--type-display);
  font-size: clamp(20px, 1.8vw, 28px);
  font-weight: 400;
  color: var(--white);
  margin-bottom: var(--space-4);
  line-height: 1.1;
}

.incentive-desc {
  font-size: 15px;
  color: rgba(255,255,255,0.5);
  line-height: 1.8;
}

@media (max-width: 900px) {
  .pricing-frame { grid-template-columns: 1fr; }
  .incentive-grid { grid-template-columns: 1fr; }
  .number-factors { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .compare-table { font-size: 13px; }
  .compare-table thead th { padding: 0 var(--space-2) var(--space-3); letter-spacing: 0.06em; }
  .compare-table tbody th,
  .compare-table tbody td { padding: var(--space-3) var(--space-2); }
  .compare-table th[scope="row"] { font-size: 18px; }
  .compare-table tbody tr:not(.is-ours) th { padding-left: 0; }
  .roof-table tr.is-ours th { padding-left: var(--space-2); }
  .number-factors { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .pricing-factor { grid-template-columns: 40px 1fr; gap: 0 var(--space-4); }
}

/* ── Journal articles ─────────────────────────────────── */
.article { background: var(--black); }

.article-wrap {
  max-width: calc(760px + 2 * var(--gutter));
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.article-header {
  padding-top: 160px;
  padding-bottom: var(--space-7);
}

.article-header h1 {
  font-family: var(--type-display);
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--white);
}

.article-meta {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: var(--space-4);
}

.article-meta a { color: var(--white); }

.article-deck {
  font-size: 19px;
  line-height: 1.7;
  color: rgba(255,255,255,0.6);
  margin-top: var(--space-4);
}

.article-byline {
  font-size: 13px;
  color: var(--mid);
  margin-top: var(--space-4);
}

.article-hero {
  max-width: var(--max-w);
  margin: 0 auto var(--space-8);
  padding: 0 var(--gutter);
}

.article-hero img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* Body copy */
.article-body {
  font-size: 18px;
  line-height: 1.8;
  color: rgba(255,255,255,0.7);
  padding-bottom: var(--space-8);
}

.article-body p { margin-bottom: 1.4em; }

.article-body h2 {
  font-family: var(--type-display);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 400;
  line-height: 1.15;
  color: var(--white);
  margin: 2.2em 0 0.7em;
}

.article-body h3 {
  font-family: var(--type-display);
  font-size: clamp(22px, 2vw, 28px);
  font-weight: 400;
  line-height: 1.2;
  color: var(--white);
  margin: 1.6em 0 0.5em;
}

.article-body a,
.article-extras a {
  color: var(--white);
  border-bottom: 1px solid rgba(255,255,255,0.3);
  transition: border-color 0.2s;
}

.article-body a:hover,
.article-extras a:hover { border-color: var(--white); }

.article-body strong { color: var(--white); font-weight: 500; }

.article-body ul,
.article-body ol {
  margin: 0 0 1.6em 1.2em;
}

.article-body li { margin-bottom: 0.6em; }
.article-body li::marker { color: var(--mid); }

.article-body ul.article-list {
  list-style: none;
  margin-left: 0;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.article-list li {
  padding: var(--space-4) 0;
  margin: 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.item-label,
.list-section-header { color: var(--white); font-weight: 500; }

.article-img,
.article-body figure {
  margin: var(--space-6) 0;
}

.article-body figure img { width: 100%; }

/* Diagrams were drawn for a light page */
.article-body figure img[src$=".svg"] { background: var(--off-white); padding: var(--space-4); }

.article-body figcaption,
.article-note {
  font-size: 13px;
  line-height: 1.6;
  color: var(--mid);
  margin-top: var(--space-3);
}

/* Tables */
.table-wrap {
  overflow-x: auto;
  margin: var(--space-6) 0 var(--space-3);
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  line-height: 1.5;
  margin: var(--space-6) 0 var(--space-3);
}

.table-wrap .article-table { margin: 0; }

.article-table th {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mid);
  text-align: left;
  padding: 0 var(--space-3) var(--space-3);
  border-bottom: 1px solid rgba(255,255,255,0.2);
  vertical-align: bottom;
}

.article-table td {
  padding: var(--space-3);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  vertical-align: top;
}

.article-table th:first-child,
.article-table td:first-child { padding-left: 0; }
.article-table td:first-child { color: var(--white); }
.article-table tr.hl td { color: var(--white); background: rgba(255,255,255,0.05); }
.article-table tr.hl td:first-child { padding-left: var(--space-3); }

/* Two product comparison */
.comparison-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: rgba(255,255,255,0.08);
  margin: var(--space-6) 0;
}

.comparison-col {
  background: var(--black);
  padding: var(--space-5);
}

.comparison-col:first-child { background: rgba(255,255,255,0.05); }

.comparison-name {
  font-family: var(--type-display);
  font-size: 26px;
  color: var(--white);
  margin-bottom: var(--space-4) !important;
}

.comparison-stat {
  font-size: 13px;
  color: var(--mid);
  padding: var(--space-2) 0;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.comparison-stat strong {
  display: block;
  font-family: var(--type-display);
  font-size: 22px;
  color: var(--white);
  font-weight: 400;
}

/* Stats row */
.article-body ul.article-stats {
  list-style: none;
  margin: var(--space-6) 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-4);
}

.article-stats li { margin: 0; }

.article-stat-num {
  display: block;
  font-family: var(--type-display);
  font-size: 32px;
  color: var(--white);
  line-height: 1.1;
}

.article-stat-label { font-size: 13px; color: var(--mid); }

/* Callouts and inline links to act */
.offer-block {
  border: 1px solid rgba(255,255,255,0.15);
  padding: var(--space-5);
  margin: var(--space-6) 0;
}

.offer-block p {
  font-family: var(--type-display);
  font-size: 24px;
  line-height: 1.3;
  color: var(--white);
  margin-bottom: var(--space-4);
}

.article-body a.cta-link,
.article-body a.inline-cta {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 1.6em;
  padding-bottom: 4px;
}

.article-body a.cta-link::after,
.article-body a.inline-cta::after { content: '  \2192'; }

.offer-block a.inline-cta { margin-bottom: 0; }

.article-close {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-5);
  margin-top: var(--space-6);
}

/* FAQ inside articles */
.article-body hr {
  border: 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  margin: var(--space-7) 0 0;
}

.article-faq-item {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: var(--space-4) 0;
}

.article-faq-item:last-of-type { border-bottom: 1px solid rgba(255,255,255,0.1); margin-bottom: var(--space-6); }

.article-body .article-faq-q {
  font-family: var(--type-display);
  font-size: 22px;
  line-height: 1.3;
  color: var(--white);
  margin-bottom: var(--space-2);
}

.article-body .article-faq-a { margin-bottom: 0; }

/* After the article: related reading, sources */
.article-extras {
  padding-bottom: var(--space-8);
  font-size: 15px;
  color: rgba(255,255,255,0.6);
}

.article-extras > * + * { margin-top: var(--space-6); }
.article-extras .label { margin-bottom: var(--space-3); }
.article-extras ul { list-style: none; }

.article-related ul { border-top: 1px solid rgba(255,255,255,0.1); }

.article-related li { border-bottom: 1px solid rgba(255,255,255,0.1); }

.article-related li a {
  display: block;
  padding: var(--space-3) 0;
  font-family: var(--type-display);
  font-size: 21px;
  border: 0;
}

.article-related p:not(.label) a { margin-right: var(--space-3); }

.article-sources li { font-size: 13px; line-height: 2; }
.article-sources a { color: var(--mid); border-color: rgba(255,255,255,0.15); }

/* Journal index */
.journal-list { border-top: 1px solid rgba(255,255,255,0.1); }

.journal-row {
  display: grid;
  grid-template-columns: 200px 1fr auto;
  gap: var(--space-6);
  align-items: center;
  padding: var(--space-5) 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.journal-thumb img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  transition: opacity 0.3s var(--ease);
}

.journal-title {
  font-family: var(--type-display);
  font-size: clamp(22px, 2.2vw, 32px);
  line-height: 1.2;
  color: var(--white);
}

.journal-read {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mid);
  transition: color 0.2s;
}

.journal-row:hover .journal-read { color: var(--white); }
.journal-row:hover .journal-thumb img { opacity: 0.8; }

@media (max-width: 768px) {
  .article-header { padding-top: 120px; }
  .article-body { font-size: 17px; }
  .comparison-block { grid-template-columns: 1fr; }
  .article-body ul.article-stats { grid-template-columns: 1fr 1fr; }
  .article-table { font-size: 14px; }
  .journal-row { grid-template-columns: 120px 1fr; gap: var(--space-4); }
  .journal-read { display: none; }
}

/* ================================================================
   Active nav link
   ================================================================ */

.nav-links a[aria-current="page"] {
  opacity: 0.45;
  pointer-events: none;
}

/* ================================================================
   Learning Center
   ================================================================ */

.learn-controls {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.learn-search {
  width: 100%;
  max-width: 480px;
  padding: 12px 18px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 4px;
  color: var(--white);
  font-family: var(--type-body);
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s;
}
.learn-search::placeholder { color: var(--mid); }
.learn-search:focus { border-color: rgba(255,255,255,0.35); }

.learn-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.learn-filter-btn {
  padding: 7px 18px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 100px;
  background: transparent;
  color: rgba(255,255,255,0.55);
  font-family: var(--type-body);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.learn-filter-btn:hover {
  border-color: rgba(255,255,255,0.5);
  color: var(--white);
}
.learn-filter-btn.is-active {
  background: var(--white);
  border-color: var(--white);
  color: var(--black);
}

.learn-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-7);
  margin-top: var(--space-6);
}

.learn-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 4px;
  overflow: hidden;
  transition: border-color 0.25s var(--ease);
}
.learn-card:hover { border-color: rgba(255,255,255,0.28); }

.learn-card-img img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
  transition: opacity 0.3s var(--ease);
}
.learn-card:hover .learn-card-img img { opacity: 0.85; }

.learn-card-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  flex: 1;
}

.learn-card-topic {
  font-family: var(--type-body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mid);
}

.learn-card-title {
  font-family: var(--type-display);
  font-size: clamp(18px, 1.6vw, 24px);
  font-weight: 400;
  line-height: 1.2;
  color: var(--white);
}

.learn-card-summary {
  font-size: 14px;
  line-height: 1.65;
  color: rgba(255,255,255,0.5);
  flex: 1;
}

.learn-card-date {
  font-size: 12px;
  color: rgba(255,255,255,0.3);
  margin-top: auto;
}

.learn-empty {
  margin-top: var(--space-8);
  text-align: center;
  color: rgba(255,255,255,0.45);
  font-size: 16px;
}
.learn-reset {
  background: none;
  border: none;
  color: var(--white);
  font-family: var(--type-body);
  font-size: 16px;
  text-decoration: underline;
  cursor: pointer;
  padding: 0;
}

@media (max-width: 900px) {
  .learn-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .learn-grid { grid-template-columns: 1fr; gap: var(--space-5); }
  .learn-search { max-width: 100%; }
}