/* =========================================
   terrawell.tech — Global Site Styles
   ========================================= */

:root {
  --clr-bg: #ffffff;
  --clr-bg-alt: #f7f6f4;
  --clr-bg-dark: #1a1a1a;
  --clr-text: #1a1a1a;
  --clr-text-muted: #6b6b6b;
  --clr-text-light: #9a9a9a;
  --clr-border: #e4e2df;
  --clr-accent: #4a6741;   /* muted forest green — mineral/nature tone */
  --clr-accent-light: #e8ede7;

  --font-sans: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  --font-serif: 'Georgia', 'Times New Roman', serif;

  --max-w: 1120px;
  --gutter: clamp(1.25rem, 5vw, 2.5rem);

  --radius: 4px;
  --transition: 0.25s ease;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--clr-text);
  background: var(--clr-bg);
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

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

/* ---- Typography helpers ---- */
.section-eyebrow {
  display: block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 0.75rem;
}
.section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--clr-text);
}
.section-lead {
  font-size: 1.0625rem;
  color: var(--clr-text-muted);
  max-width: 56ch;
  line-height: 1.75;
}

/* ========================================
   HEADER
   ======================================== */
.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--clr-border);
  transition: box-shadow var(--transition);
}
.site-header.scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.header-logo {
  font-size: 1.1875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--clr-text);
}
.header-logo span {
  font-weight: 300;
  font-size: 0.75rem;
  color: var(--clr-text-muted);
  margin-left: 0.5rem;
  letter-spacing: 0.06em;
}
.site-nav ul {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.site-nav a {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  transition: color var(--transition);
}
.site-nav a:hover { color: var(--clr-text); }
.nav-cta {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding-inline: 1.125rem;
  background: var(--clr-text);
  color: var(--clr-bg) !important;
  border-radius: var(--radius);
  font-size: 0.8125rem !important;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: background var(--transition) !important;
}
.nav-cta:hover { background: #333 !important; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--clr-text);
  transition: transform 0.3s, opacity 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ========================================
   HERO
   ======================================== */
.hero {
  min-height: 100svh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--clr-bg);
  overflow: hidden;
}
.hero-content {
  display: flex;
  align-items: center;
  padding-block: calc(64px + 4rem) 4rem;
  padding-inline-start: max(var(--gutter), calc((100vw - var(--max-w)) / 2 + var(--gutter)));
  padding-inline-end: clamp(2rem, 4vw, 3.5rem);
}
.hero-content-inner {
  width: 100%;
}
.hero-image {
  position: relative;
  overflow: hidden;
}
.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 1.5rem;
}
.hero-eyebrow::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--clr-accent);
}
.hero-title {
  font-size: clamp(3rem, 9vw, 7rem);
  font-weight: 200;
  letter-spacing: -0.03em;
  line-height: 1.0;
  color: var(--clr-text);
  margin-bottom: 1.25rem;
}
.hero-brand-statement {
  font-size: clamp(1rem, 1.8vw, 1.1875rem);
  font-weight: 400;
  color: var(--clr-text);
  max-width: 44ch;
  line-height: 1.5;
  margin-bottom: 0.375rem;
}
.hero-brand-statement--sub {
  font-size: clamp(0.9375rem, 1.5vw, 1.0625rem);
  font-weight: 300;
  color: var(--clr-text-muted);
  margin-bottom: 1.25rem;
}
.hero-subtitle {
  font-size: clamp(1rem, 2.2vw, 1.3125rem);
  font-weight: 300;
  color: var(--clr-text-muted);
  max-width: 52ch;
  line-height: 1.6;
  margin-bottom: 2.5rem;
}
.hero-features-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-text-light);
  margin-bottom: 0.625rem;
}
.hero-features {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 3rem;
}
.hero-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 0.9375rem;
  color: var(--clr-text-muted);
}
.hero-features li::before {
  content: '';
  display: block;
  flex-shrink: 0;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--clr-accent);
  margin-top: 0.6em;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
}
.hero-spec-line {
  margin-top: 0.75rem;
  margin-bottom: 0;
  font-size: 0.875rem;
  color: var(--clr-text-light);
  line-height: 1.5;
}
.hero-epd-label {
  margin: 0 0 0.5rem;
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-text-light);
}
.hero-epd {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.625rem;
}
.hero-epd-text {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.hero-epd-text p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  line-height: 1.5;
}
.hero-epd-text a {
  font-size: 0.875rem;
  color: var(--clr-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  margin-top: 0.25rem;
}
.hero-epd-text a:hover { opacity: 0.75; }
.epd-logo {
  width: 160px;
  height: auto;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: var(--clr-text);
  color: var(--clr-bg);
}
.btn-primary:hover { background: #333; }
.btn-secondary {
  background: transparent;
  color: var(--clr-text);
  border-color: var(--clr-border);
}
.btn-secondary:hover {
  border-color: var(--clr-text);
  background: var(--clr-bg-alt);
}
.btn svg { flex-shrink: 0; }

/* ========================================
   WHY ARCHITECTS SECTION
   ======================================== */
.why-section {
  padding-block: 6rem;
  background: var(--clr-bg-dark);
  color: #ffffff;
}
.why-section .section-eyebrow { color: #8aad85; }
.why-header {
  max-width: 64ch;
  margin-bottom: 3.5rem;
}
.why-intro {
  font-size: 1.0625rem;
  color: #b0b0b0;
  line-height: 1.75;
  margin-top: 0.875rem;
}
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5px;
  background: rgba(255,255,255,0.08);
  border: 1.5px solid rgba(255,255,255,0.08);
  border-radius: calc(var(--radius) * 2);
  overflow: hidden;
}
.why-card {
  background: var(--clr-bg-dark);
  padding: 2.25rem 1.75rem 2.5rem;
  transition: background var(--transition);
}
.why-card:hover { background: #222222; }
.why-icon {
  width: 40px;
  height: 40px;
  color: #8aad85;
  margin-bottom: 1.25rem;
}
.why-icon svg { width: 100%; height: 100%; }
.why-card-title {
  font-size: 1rem;
  font-weight: 500;
  color: #ffffff;
  letter-spacing: -0.01em;
  margin-bottom: 0.625rem;
  line-height: 1.35;
}
.why-card-text {
  font-size: 0.875rem;
  color: #808080;
  line-height: 1.75;
}

/* ========================================
   WHAT IS SECTION
   ======================================== */
.what-section {
  padding-block: 6rem;
  background: var(--clr-bg-alt);
}
.what-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.what-image {
  aspect-ratio: 4/3;
  background: var(--clr-border);
  border-radius: calc(var(--radius) * 2);
  overflow: hidden;
}
.what-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.what-text { }
.what-text .section-title { margin-bottom: 1.25rem; }
.what-text .section-lead { margin-bottom: 1.5rem; }
.what-text p {
  font-size: 0.9375rem;
  color: var(--clr-text-muted);
  line-height: 1.8;
}
.what-text p + p { margin-top: 1rem; }

/* ========================================
   WHY CTA ROW
   ======================================== */
.why-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.why-cta-text {
  font-size: 0.9375rem;
  color: #b0b0b0;
}
.why-cta-btn {
  background: transparent;
  color: #ffffff;
  border: 1px solid rgba(255,255,255,0.25);
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  white-space: nowrap;
}
.why-cta-btn:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.4);
}

/* ========================================
   APPLICATIONS (simple cards)
   ======================================== */
.apps-section {
  padding-block: 6rem;
  background: var(--clr-bg-alt);
}
.apps-header {
  max-width: 56ch;
  margin-bottom: 3rem;
}
.apps-intro {
  font-size: 1.0625rem;
  color: var(--clr-text-muted);
  line-height: 1.75;
  margin-top: 0.875rem;
}
.apps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5px;
  background: var(--clr-border);
  border: 1.5px solid var(--clr-border);
  border-radius: calc(var(--radius) * 2);
  overflow: hidden;
  margin-bottom: 1.5rem;
}
.app-simple-card {
  background: var(--clr-bg);
  padding: 2.25rem 1.75rem 2.5rem;
  transition: background var(--transition);
}
.app-simple-card:hover { background: var(--clr-bg-alt); }
.app-simple-icon {
  width: 38px;
  height: 38px;
  color: var(--clr-accent);
  margin-bottom: 1.25rem;
}
.app-simple-icon svg { width: 100%; height: 100%; }
.app-simple-title {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
  color: var(--clr-text);
}
.app-simple-text {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
}
.apps-note {
  font-size: 0.8125rem;
  color: var(--clr-text-light);
  font-style: italic;
  text-align: center;
}

/* ========================================
   SUSTAINABILITY
   ======================================== */
.sustain-section {
  padding-block: 6rem;
  background: var(--clr-bg-dark);
  color: #ffffff;
}
.sustain-section .section-eyebrow { color: #8aad85; }
.sustain-section .section-title { color: #ffffff; font-weight: 200; }
.sustain-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: end;
  margin-bottom: 3rem;
}
.sustain-intro {
  font-size: 1.0625rem;
  color: #b0b0b0;
  line-height: 1.75;
  max-width: 42ch;
}
.sustain-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5px;
  background: rgba(255,255,255,0.08);
  border: 1.5px solid rgba(255,255,255,0.08);
  border-radius: calc(var(--radius) * 2);
  overflow: hidden;
}
.sustain-card {
  background: var(--clr-bg-dark);
  padding: 2.25rem 1.75rem 2.5rem;
  transition: background var(--transition);
}
.sustain-card:hover { background: #222; }
.sustain-icon {
  width: 38px;
  height: 38px;
  color: #8aad85;
  margin-bottom: 1.25rem;
}
.sustain-icon svg { width: 100%; height: 100%; }
.sustain-card-title {
  font-size: 1rem;
  font-weight: 500;
  color: #ffffff;
  margin-bottom: 0.625rem;
  line-height: 1.35;
}
.sustain-card-text {
  font-size: 0.875rem;
  color: #808080;
  line-height: 1.75;
}

/* EPD detail panel */
.sustain-epd {
  margin-top: 2rem;
  border: 1.5px solid rgba(138, 173, 133, 0.25);
  border-radius: calc(var(--radius) * 2);
  padding: 1.75rem 2rem;
  display: flex;
  gap: 2rem;
  align-items: center;
  flex-wrap: wrap;
}
.sustain-epd-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 72px;
  padding: 0.75rem 1rem;
  border: 1.5px solid rgba(138, 173, 133, 0.35);
  border-radius: var(--radius);
  text-align: center;
  flex-shrink: 0;
}
.sustain-epd-badge-label {
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #8aad85;
}
.sustain-epd-badge-name {
  font-size: 1.375rem;
  font-weight: 600;
  color: #8aad85;
  line-height: 1;
  margin-top: 0.2rem;
  letter-spacing: -0.01em;
}
.sustain-epd-data {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem 2.5rem;
  min-width: 0;
}
.sustain-epd-row { display: flex; flex-direction: column; gap: 0.15rem; }
.sustain-epd-label {
  font-size: 0.7rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: #555;
}
.sustain-epd-value {
  font-size: 0.875rem;
  color: #c0c0c0;
  line-height: 1.45;
}
.sustain-epd-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.8125rem;
  color: #8aad85;
  border: 1px solid rgba(138, 173, 133, 0.35);
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background var(--transition), border-color var(--transition);
}
.sustain-epd-link:hover {
  background: rgba(138, 173, 133, 0.1);
  border-color: rgba(138, 173, 133, 0.55);
}

/* Carbon lifecycle callout — Performance section (light bg) */
.perf-carbon-callout {
  margin-top: 2.5rem;
  margin-bottom: 2rem;
  padding: 2rem 2.25rem;
  background: var(--clr-bg-alt);
  border-left: 3px solid var(--clr-accent);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.perf-carbon-quote {
  font-size: 1rem;
  color: var(--clr-text);
  line-height: 1.8;
  font-style: italic;
  margin-bottom: 1.5rem;
  max-width: 72ch;
}
.perf-carbon-data {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.875rem 2.5rem;
  margin-bottom: 1.25rem;
}
.perf-carbon-item { display: flex; flex-direction: column; gap: 0.15rem; }
.perf-carbon-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--clr-text-light);
}
.perf-carbon-value {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--clr-text);
  line-height: 1.4;
}
.perf-carbon-note {
  font-size: 0.775rem;
  color: var(--clr-text-muted);
  line-height: 1.5;
}
.perf-carbon-epd-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.8125rem;
  color: var(--clr-accent);
  text-decoration: none;
  border: 1px solid var(--clr-border);
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  transition: background var(--transition), border-color var(--transition);
}
.perf-carbon-epd-link:hover {
  background: var(--clr-accent-light);
  border-color: var(--clr-accent);
}

/* Carbon lifecycle callout — Sustainability section (dark bg) */
.sustain-carbon-callout {
  margin-top: 2rem;
  padding: 2rem 2.25rem;
  border-left: 3px solid #8aad85;
  background: rgba(138, 173, 133, 0.05);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.sustain-carbon-quote {
  font-size: 1rem;
  color: #d0d0d0;
  line-height: 1.8;
  font-style: italic;
  margin-bottom: 1.5rem;
  max-width: 72ch;
}
.sustain-carbon-data {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.875rem 2.5rem;
  margin-bottom: 1.25rem;
}
.sustain-carbon-item { display: flex; flex-direction: column; gap: 0.15rem; }
.sustain-carbon-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: #4e4e4e;
}
.sustain-carbon-value {
  font-size: 0.9375rem;
  font-weight: 500;
  color: #d8d8d8;
  line-height: 1.4;
}
.sustain-carbon-note {
  font-size: 0.775rem;
  color: #707070;
  line-height: 1.5;
}

/* ========================================
   TECHNICAL / DOWNLOAD
   ======================================== */
.technical-section {
  padding-block: 6rem;
  background: var(--clr-bg-alt);
}
.technical-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: end;
  margin-bottom: 3rem;
}
.technical-for-architects {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-text-light);
  margin-bottom: 0.5rem;
}
.technical-intro {
  font-size: 1.0625rem;
  color: var(--clr-text-muted);
  line-height: 1.75;
  max-width: 42ch;
}
.technical-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5px;
  background: var(--clr-border);
  border: 1.5px solid var(--clr-border);
  border-radius: calc(var(--radius) * 2);
  overflow: hidden;
  margin-bottom: 1.5rem;
}
.technical-item {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  align-items: center;
  gap: 1.25rem;
  padding: 1.75rem 1.5rem;
  background: var(--clr-bg);
  transition: background var(--transition);
}
.technical-item:hover { background: var(--clr-bg-alt); }
.technical-item-icon {
  width: 40px;
  height: 40px;
  color: var(--clr-text-muted);
  flex-shrink: 0;
}
.technical-item-icon svg { width: 100%; height: 100%; }
.technical-item-text h3 {
  font-size: 0.9375rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
  color: var(--clr-text);
}
.technical-item-text p {
  font-size: 0.8125rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}
.technical-download {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--clr-text);
  white-space: nowrap;
  transition: all var(--transition);
  flex-shrink: 0;
}
.technical-download:hover {
  border-color: var(--clr-text);
  background: var(--clr-bg-alt);
}
.technical-note {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
  text-align: center;
}
.technical-note a {
  color: var(--clr-text);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ========================================
   GALLERY NOTE
   ======================================== */
.gallery-note {
  margin-top: 1.5rem;
  font-size: 0.875rem;
  color: var(--clr-text-light);
  text-align: center;
  font-style: italic;
}

/* ========================================
   PERFORMANCE & TESTED RESULTS
   ======================================== */
.perf-section {
  padding-block: 6rem;
  background: var(--clr-bg);
}
.perf-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: end;
  margin-bottom: 3rem;
}
.perf-header-left { }
.perf-intro {
  font-size: 1.0625rem;
  color: var(--clr-text-muted);
  line-height: 1.75;
  max-width: 42ch;
}
.perf-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5px;
  background: var(--clr-border);
  border: 1.5px solid var(--clr-border);
  border-radius: calc(var(--radius) * 2);
  overflow: hidden;
  margin-bottom: 1.5rem;
}
.perf-card {
  background: var(--clr-bg-alt);
  padding: 2.5rem 2rem 2.75rem;
  transition: background var(--transition);
}
.perf-card:hover { background: #edeae4; }
.perf-icon {
  width: 38px;
  height: 38px;
  color: var(--clr-accent);
  margin-bottom: 1.25rem;
}
.perf-icon svg { width: 100%; height: 100%; }
.perf-card-title {
  font-size: 1.0625rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 0.625rem;
  color: var(--clr-text);
  line-height: 1.35;
}
.perf-card-text {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  line-height: 1.75;
}
.perf-tested-by {
  font-size: 0.8125rem;
  color: var(--clr-text-light);
  font-style: italic;
  margin-bottom: 1.75rem;
}
.perf-data-list {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 0.875rem;
}
.perf-data-list li {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  line-height: 1.65;
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--clr-border);
}
.perf-data-list li:last-child { border-bottom: none; }
.perf-data-list strong {
  color: var(--clr-text);
  font-weight: 500;
}
.perf-card-note {
  font-size: 0.775rem;
  color: var(--clr-text-light);
  font-style: italic;
  margin-top: 0.75rem;
  line-height: 1.5;
}
.perf-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  padding-top: 1.75rem;
  border-top: 1px solid var(--clr-border);
}
.perf-cta-text {
  font-size: 0.9375rem;
  color: var(--clr-text-muted);
}
.perf-cta-btn {
  background: var(--clr-text);
  color: var(--clr-bg);
  font-size: 0.875rem;
  padding: 0.625rem 1.25rem;
  white-space: nowrap;
}
.perf-cta-btn:hover { background: #333; }

/* ========================================
   FEATURES
   ======================================== */
.features-section {
  padding-block: 6rem;
  background: var(--clr-bg);
}
.features-header {
  max-width: 48ch;
  margin-bottom: 3.5rem;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5px;
  background: var(--clr-border);
  border: 1.5px solid var(--clr-border);
  border-radius: calc(var(--radius) * 2);
  overflow: hidden;
}
.feature-card {
  background: var(--clr-bg);
  padding: 2.5rem 2rem;
  transition: background var(--transition);
}
.feature-card:hover { background: var(--clr-bg-alt); }
.feature-icon {
  width: 44px;
  height: 44px;
  margin-bottom: 1.25rem;
  color: var(--clr-accent);
}
.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 0.625rem;
}
.feature-card p {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
}
.feature-note {
  font-size: 0.8125rem !important;
  color: var(--clr-text-light) !important;
  margin-top: 0.5rem;
  font-style: italic;
}

/* ========================================
   APPLICATIONS
   ======================================== */
.applications-section {
  padding-block: 6rem;
  background: var(--clr-bg-alt);
}
.applications-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}
.applications-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
.app-card {
  background: var(--clr-bg);
  border-radius: calc(var(--radius) * 2);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.app-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.08);
}
.app-card-img {
  aspect-ratio: 3/4;
  background: var(--clr-border);
  overflow: hidden;
  position: relative;
}
.app-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.app-card:hover .app-card-img img { transform: scale(1.04); }
.app-card-img-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: #e8e6e3;
  text-align: center;
}
.app-card-img-placeholder p {
  font-size: 0.875rem;
  font-style: italic;
  color: #8a8a8a;
  line-height: 1.65;
}
.app-card-body {
  padding: 1rem 1.125rem 1.25rem;
}
.app-card-body h3 {
  font-size: 0.9375rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}
.app-card-body p {
  font-size: 0.8125rem;
  color: var(--clr-text-muted);
  line-height: 1.55;
}

/* ========================================
   SPECIFICATIONS
   ======================================== */
.specs-section {
  padding-block: 6rem;
  background: var(--clr-bg);
}
.specs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.specs-table-wrap { }
.specs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}
.specs-table tr {
  border-bottom: 1px solid var(--clr-border);
}
.specs-table tr:first-child {
  border-top: 1px solid var(--clr-border);
}
.specs-table th {
  width: 40%;
  padding: 0.875rem 0;
  font-weight: 500;
  font-size: 0.875rem;
  text-align: left;
  color: var(--clr-text-muted);
  vertical-align: top;
}
.specs-table td {
  padding: 0.875rem 0 0.875rem 1rem;
  color: var(--clr-text);
  line-height: 1.6;
}
.specs-note {
  margin-top: 1.25rem;
  font-size: 0.8125rem;
  color: var(--clr-text-light);
  line-height: 1.65;
  font-style: italic;
}
.specs-cta-box {
  background: var(--clr-bg-alt);
  border-radius: calc(var(--radius) * 2);
  padding: 2.5rem;
}
.specs-cta-box h3 {
  font-size: 1.25rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
}
.specs-cta-box p {
  font-size: 0.9375rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
  margin-bottom: 1.75rem;
}

/* ========================================
   MADE IN JAPAN
   ======================================== */
.mij-section {
  padding-block: 6rem;
  background: var(--clr-bg-dark);
  color: #ffffff;
}
.mij-section .section-eyebrow { color: #8aad85; }
.mij-section .section-title { color: #ffffff; font-weight: 200; }
.mij-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-top: 3rem;
}
.mij-text p {
  font-size: 0.9375rem;
  color: #b0b0b0;
  line-height: 1.8;
  margin-top: 1.25rem;
}
.mij-points {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.mij-point {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.mij-point-num {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
  margin-top: 0.1em;
}
.mij-point-text h4 {
  font-size: 0.9375rem;
  font-weight: 500;
  color: #ffffff;
  margin-bottom: 0.25rem;
}
.mij-point-text p {
  font-size: 0.875rem;
  color: #808080;
  line-height: 1.65;
  margin-top: 0 !important;
}

/* ========================================
   CONTACT
   ======================================== */
.contact-section {
  padding-block: 6rem;
  background: var(--clr-bg);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}
.contact-intro .section-title { margin-bottom: 1rem; }
.contact-intro .section-lead { margin-bottom: 2rem; }
.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.contact-item label {
  display: block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--clr-text-light);
  margin-bottom: 0.25rem;
}
.contact-item a,
.contact-item p {
  font-size: 0.9375rem;
  color: var(--clr-text);
  line-height: 1.65;
}
.contact-item a:hover { color: var(--clr-accent); }
.contact-form {
  background: var(--clr-bg-alt);
  border-radius: calc(var(--radius) * 2);
  padding: 2.5rem;
}
.contact-form h3 {
  font-size: 1.125rem;
  font-weight: 400;
  margin-bottom: 1.5rem;
}
.form-group {
  margin-bottom: 1rem;
}
.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  margin-bottom: 0.375rem;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 0.875rem;
  font-size: 0.9375rem;
  font-family: inherit;
  color: var(--clr-text);
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  outline: none;
  transition: border-color var(--transition);
  appearance: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--clr-text-muted);
}
.form-group textarea { resize: vertical; min-height: 110px; line-height: 1.6; }
.form-submit { margin-top: 1.25rem; }
.form-submit .btn { width: 100%; justify-content: center; }
.form-privacy {
  margin-top: 0.875rem;
  font-size: 0.75rem;
  color: var(--clr-text-light);
  text-align: center;
  line-height: 1.55;
}

/* ========================================
   FOOTER
   ======================================== */
.site-footer {
  background: var(--clr-bg-dark);
  color: #808080;
  padding-block: 3rem 2rem;
}
.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 3rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  flex-wrap: wrap;
}
.footer-brand {
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #ffffff;
  margin-bottom: 0.625rem;
}
.footer-tagline {
  font-size: 0.8125rem;
  color: #666;
  line-height: 1.6;
  max-width: 28ch;
}
.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.footer-nav a {
  font-size: 0.875rem;
  color: #808080;
  transition: color var(--transition);
}
.footer-nav a:hover { color: #ffffff; }
.footer-bottom {
  padding-top: 1.75rem;
  font-size: 0.8125rem;
  color: #4a4a4a;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ========================================
   SURFACE & TEXTURE
   ======================================== */
.surface-section {
  padding-block: var(--section-gap);
  border-top: 1px solid var(--clr-border);
}
.surface-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 6vw, 5rem);
  align-items: start;
}
.surface-text .section-eyebrow { margin-bottom: 1rem; }
.surface-text .section-title { margin-bottom: 1.5rem; }
.surface-text p {
  color: var(--clr-text-muted);
  line-height: 1.75;
  margin-bottom: 1rem;
}
.surface-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 2rem;
  border-top: 1px solid var(--clr-border);
}
.surface-list li {
  padding: 0.625rem 0;
  border-bottom: 1px solid var(--clr-border);
  font-size: 0.9375rem;
  color: var(--clr-text);
  display: flex;
  align-items: center;
  gap: 0.625rem;
}
.surface-list li::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--clr-accent);
  flex-shrink: 0;
}
.surface-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
}
.surface-img-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
.surface-fig {
  margin: 0;
}
.surface-fig--duo {
  grid-column: 1 / -1;
}
.surface-fig-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
.surface-fig img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  display: block;
  background: var(--clr-bg-alt);
}
.surface-fig figcaption {
  margin-top: 0.5rem;
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-text-light);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.surface-fig-desc {
  font-size: 0.8125rem;
  letter-spacing: 0;
  text-transform: none;
  color: var(--clr-text-muted);
  line-height: 1.5;
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 900px) {
  .site-nav { display: none; }
  .hamburger { display: flex; }

  .site-nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 64px 0 0;
    background: var(--clr-bg);
    padding: 2rem var(--gutter);
    border-top: 1px solid var(--clr-border);
    z-index: 99;
  }
  .site-nav.open ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
  }
  .site-nav.open ul li a {
    display: block;
    padding: 1rem 0;
    font-size: 1.0625rem;
    border-bottom: 1px solid var(--clr-border);
    color: var(--clr-text);
  }
  .site-nav.open ul li:last-child a { border-bottom: none; }

  .hero {
    grid-template-columns: 1fr;
    grid-template-rows: auto 56vw;
    min-height: unset;
  }
  .hero-content {
    padding-block: calc(64px + 2.5rem) 2.5rem;
    padding-inline: var(--gutter);
  }
  .hero-image { min-height: 280px; }

  .what-grid,
  .surface-grid,
  .specs-grid,
  .mij-grid,
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }

  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .why-cta { flex-direction: column; align-items: flex-start; }
  .sustain-header { grid-template-columns: 1fr; gap: 1.25rem; }
  .sustain-grid { grid-template-columns: repeat(2, 1fr); }
  .sustain-epd { flex-direction: column; align-items: flex-start; gap: 1.25rem; }
  .sustain-epd-data { grid-template-columns: 1fr; gap: 0.625rem; }
  .perf-carbon-data { grid-template-columns: 1fr; }
  .sustain-carbon-data { grid-template-columns: 1fr; }
  .technical-header { grid-template-columns: 1fr; gap: 1.25rem; }
  .technical-grid { grid-template-columns: 1fr; }
  .apps-grid { grid-template-columns: repeat(2, 1fr); }
  .perf-header { grid-template-columns: 1fr; gap: 1.25rem; }
  .perf-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }

  .applications-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
}
@media (max-width: 600px) {
  .hero-title { font-size: clamp(2.75rem, 12vw, 4rem); }
  .apps-grid { grid-template-columns: 1fr; }
  .perf-cta { flex-direction: column; align-items: flex-start; }
  .sustain-grid { grid-template-columns: 1fr; }
  .technical-item { grid-template-columns: 40px 1fr; }
  .technical-download { grid-column: 1 / -1; }
  .why-grid { grid-template-columns: 1fr; }
  .applications-grid { grid-template-columns: 1fr 1fr; }
  .footer-inner { flex-direction: column; gap: 1.5rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .contact-form { padding: 1.5rem; }
  .specs-cta-box { padding: 1.75rem; }
  .perf-carbon-callout,
  .sustain-carbon-callout { padding: 1.5rem 1.25rem; }
}
@media (max-width: 480px) {
  .applications-grid { grid-template-columns: 1fr; }
}
@media (max-width: 380px) {
  .surface-fig-images { grid-template-columns: 1fr; }
}

/* ========================================
   LIGHTBOX
   ======================================== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
.lightbox.is-open {
  opacity: 1;
  pointer-events: auto;
}
.lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 10, 0.92);
  cursor: zoom-out;
}
.lightbox-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  max-width: min(90vw, 1100px);
  max-height: 90vh;
  transform: scale(0.96);
  transition: transform 0.25s ease;
}
.lightbox.is-open .lightbox-content {
  transform: scale(1);
}
.lightbox-img {
  display: block;
  max-width: 100%;
  max-height: calc(90vh - 4rem);
  object-fit: contain;
  border-radius: var(--radius);
  box-shadow: 0 24px 64px rgba(0,0,0,0.5);
}
.lightbox-caption {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.04em;
  text-align: center;
}
.lightbox-close {
  position: fixed;
  top: 1.25rem;
  right: 1.5rem;
  z-index: 2;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  color: #fff;
  font-size: 1.5rem;
  line-height: 1;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}
.lightbox-close:hover { background: rgba(255,255,255,0.2); }

/* Clickable images (lightbox) */
.surface-fig img,
.surface-fig-images img,
.app-card-img img {
  cursor: zoom-in;
}