:root {
  --brown-980: #16110e;
  --brown-920: #211814;
  --brown-860: #34231d;
  --brown-740: #5f3f31;
  --brown-620: #8f6146;
  --sand-050: #fbf7f0;
  --sand-100: #f3ebdf;
  --sand-180: #eadbc6;
  --sand-260: #d8c3a5;
  --olive-500: #6b715c;
  --olive-620: #515747;
  --charcoal-900: #27231f;
  --charcoal-700: #544e48;
  --line: rgba(52, 35, 29, 0.14);
  --white: #ffffff;
  --shadow-xl: 0 36px 80px rgba(22, 17, 14, 0.14);
  --shadow-lg: 0 18px 40px rgba(22, 17, 14, 0.08);
  --container: 1220px;
  --gutter: 24px;
  --radius-sm: 16px;
  --radius-md: 24px;
  --radius-lg: 36px;
  --font-body: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-display: Georgia, "Times New Roman", serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--charcoal-900);
  background: var(--sand-050);
  line-height: 1.65;
  overflow-x: hidden;
}

body.nav-open {
  overflow: hidden;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

.container {
  width: min(calc(100% - (var(--gutter) * 2)), var(--container));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid transparent;
  background: rgba(251, 247, 240, 0.74);
  backdrop-filter: blur(20px);
  transition: background-color 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.site-header.is-scrolled {
  background: rgba(251, 247, 240, 0.92);
  border-color: rgba(52, 35, 29, 0.09);
  box-shadow: 0 12px 30px rgba(22, 17, 14, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 78px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 14px;
  background:
    radial-gradient(circle at 72% 28%, rgba(234, 219, 198, 0.95) 0 12%, transparent 13%),
    radial-gradient(circle at 32% 70%, rgba(143, 97, 70, 0.65) 0 20%, transparent 21%),
    linear-gradient(140deg, #6b4a38, #221815 72%);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}

.brand-copy {
  display: grid;
  gap: 2px;
}

.brand-copy strong {
  font-size: 0.96rem;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.brand-copy span {
  color: var(--charcoal-700);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.site-nav a {
  padding: 10px 13px;
  border-radius: 999px;
  color: var(--charcoal-700);
  font-size: 0.92rem;
  font-weight: 700;
  transition: color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--charcoal-900);
  background: rgba(52, 35, 29, 0.07);
  outline: none;
}

.site-nav .nav-cta {
  background: var(--brown-920);
  color: var(--sand-050);
}

.site-nav .nav-cta:hover,
.site-nav .nav-cta:focus-visible {
  background: var(--brown-860);
  color: var(--sand-050);
}

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--brown-920);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
}

.section {
  padding: 104px 0;
}

.section-soft {
  background:
    radial-gradient(circle at top right, rgba(216, 195, 165, 0.16), transparent 24%),
    var(--sand-100);
}

.section-dark {
  background:
    linear-gradient(180deg, rgba(22, 17, 14, 0.92), rgba(33, 24, 20, 0.98)),
    var(--brown-920);
  color: var(--sand-050);
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: calc(100vh - 78px);
  display: flex;
  align-items: center;
  background:
    radial-gradient(circle at 82% 20%, rgba(216, 195, 165, 0.18), transparent 24%),
    radial-gradient(circle at 12% 84%, rgba(107, 113, 92, 0.2), transparent 28%),
    linear-gradient(135deg, #17120f 8%, #241915 44%, #3b2921 100%);
  color: var(--sand-050);
}

.hero-noise {
  position: absolute;
  inset: 0;
  opacity: 0.2;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 140px 140px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.8), transparent 92%);
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: 48px;
  align-items: center;
  padding: 80px 0 68px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--olive-500);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero .eyebrow,
.section-dark .eyebrow {
  color: var(--sand-260);
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.02;
}

h1,
h2 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
}

h1 {
  max-width: 11ch;
  font-size: clamp(3.3rem, 7vw, 6.4rem);
}

h2 {
  max-width: 13ch;
  font-size: clamp(2.4rem, 5vw, 4.4rem);
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.55rem);
  font-weight: 800;
}

p {
  margin: 0;
}

.hero-subtitle {
  max-width: 62ch;
  margin-top: 28px;
  color: rgba(251, 247, 240, 0.84);
  font-size: clamp(1.08rem, 1.8vw, 1.34rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.hero-note {
  max-width: 58ch;
  margin-top: 24px;
  color: rgba(251, 247, 240, 0.68);
  font-size: 0.98rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.96rem;
  font-weight: 800;
  transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease, color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  outline: none;
}

.button-primary {
  background: var(--sand-050);
  color: var(--brown-920);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--white);
}

.button-secondary {
  border-color: rgba(251, 247, 240, 0.24);
  color: var(--sand-050);
  background: rgba(255, 255, 255, 0.04);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: rgba(251, 247, 240, 0.46);
  background: rgba(255, 255, 255, 0.08);
}

.hero-panel {
  display: grid;
  gap: 18px;
}

.hero-media {
  margin: 0;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-xl);
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 34%;
  background: linear-gradient(180deg, transparent, rgba(22, 17, 14, 0.28));
  pointer-events: none;
}

.hero-media img,
.product-media img,
.quality-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-specs {
  display: grid;
  gap: 14px;
}

.hero-specs article {
  padding: 18px 18px 19px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-specs span,
.product-label,
.comparison-mobile-card span {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--sand-260);
  font-size: 0.77rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-specs strong {
  display: block;
  font-size: 1.06rem;
  font-weight: 800;
}

.hero-specs p {
  margin-top: 6px;
  color: rgba(251, 247, 240, 0.76);
  font-size: 0.94rem;
}

.intro-strip {
  padding: 28px 0 0;
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
  gap: 36px;
  padding: 34px;
  border-radius: var(--radius-md);
  background: var(--white);
  border: 1px solid rgba(52, 35, 29, 0.08);
  box-shadow: var(--shadow-lg);
  transform: translateY(-72px);
}

.intro-grid h2 {
  max-width: 14ch;
  font-size: clamp(2rem, 4vw, 3.1rem);
}

.intro-copy {
  align-self: center;
  color: var(--charcoal-700);
  font-size: 1.03rem;
}

.section-heading {
  display: grid;
  gap: 18px;
  margin-bottom: 42px;
}

.section-heading p:last-child,
.section-heading-light p:last-child,
.application-note,
.benefit-card p,
.product-body p,
.contact-copy p:not(.eyebrow),
.quality-copy p:not(.eyebrow),
.evidence-card p,
.references li,
.spec-table td,
.spec-table th,
.comparison-table td,
.comparison-table th,
.feature-list li,
.quality-list span,
.intro-copy,
.comparison-mobile-card p {
  color: var(--charcoal-700);
}

.section-dark .section-heading-light p:last-child,
.section-dark .application-card p,
.section-dark .application-note {
  color: rgba(251, 247, 240, 0.78);
}

.product-grid,
.benefit-grid,
.application-grid,
.evidence-grid,
.spec-grid,
.comparison-mobile {
  display: grid;
  gap: 24px;
}

.product-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.product-card,
.benefit-card,
.application-card,
.evidence-card,
.spec-card,
.contact-form,
.quality-media,
.quality-copy,
.table-shell,
.comparison-mobile-card {
  border-radius: var(--radius-md);
  border: 1px solid rgba(52, 35, 29, 0.08);
  background: var(--white);
  box-shadow: var(--shadow-lg);
}

.product-card {
  overflow: hidden;
  display: grid;
  grid-template-rows: 260px 1fr;
}

.product-media {
  background: linear-gradient(135deg, rgba(216, 195, 165, 0.28), rgba(107, 113, 92, 0.12));
}

.product-body {
  display: grid;
  gap: 16px;
  padding: 28px;
}

.product-body p:first-of-type {
  color: var(--charcoal-700);
}

.feature-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.feature-list li {
  position: relative;
  padding-left: 18px;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--olive-500);
}

.table-shell {
  padding: 18px;
}

.comparison-mobile {
  display: none;
}

.comparison-mobile-card {
  padding: 22px;
}

.comparison-mobile-card h3 {
  margin-bottom: 18px;
}

.comparison-mobile-card span {
  color: var(--olive-620);
  margin-bottom: 6px;
}

.comparison-mobile-card div + div {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(52, 35, 29, 0.08);
}

.table-wrap {
  overflow-x: auto;
  border-radius: 20px;
  border: 1px solid rgba(52, 35, 29, 0.08);
}

.comparison-table,
.spec-table {
  width: 100%;
  border-collapse: collapse;
}

.comparison-table caption {
  padding: 18px;
  background: var(--sand-050);
  color: var(--charcoal-700);
  font-size: 0.92rem;
  text-align: left;
}

.comparison-table th,
.comparison-table td,
.spec-table th,
.spec-table td {
  padding: 16px 18px;
  vertical-align: top;
  text-align: left;
}

.comparison-table thead th {
  background: var(--brown-920);
  color: var(--sand-050);
  font-size: 0.95rem;
}

.comparison-table tbody tr:nth-child(even) {
  background: rgba(243, 235, 223, 0.42);
}

.comparison-table tbody th,
.spec-table th {
  font-weight: 800;
  color: var(--charcoal-900);
}

.benefit-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.benefit-card {
  padding: 26px;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.benefit-card:hover,
.benefit-card:focus-within {
  transform: translateY(-4px);
  border-color: rgba(52, 35, 29, 0.14);
}

.benefit-card p {
  margin-top: 12px;
}

.application-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.application-card {
  padding: 24px;
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.08);
  box-shadow: none;
}

.application-card h3 {
  color: var(--sand-050);
}

.application-card p + p {
  margin-top: 14px;
}

.spec-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.spec-card {
  padding: 24px;
}

.spec-head {
  display: grid;
  gap: 8px;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(52, 35, 29, 0.09);
}

.spec-table {
  margin-top: 18px;
}

.spec-table tr + tr {
  border-top: 1px solid rgba(52, 35, 29, 0.08);
}

.quality-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.82fr);
  gap: 24px;
}

.quality-copy {
  padding: 34px;
}

.quality-list {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.quality-list div {
  display: grid;
  gap: 4px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(52, 35, 29, 0.08);
}

.quality-list div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.quality-list strong {
  font-size: 0.98rem;
}

.quality-media {
  overflow: hidden;
  margin: 0;
}

.quality-media figcaption {
  padding: 16px 18px 20px;
  color: var(--charcoal-700);
  font-size: 0.92rem;
}

.evidence-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.evidence-card {
  padding: 26px;
}

.evidence-card p + p {
  margin-top: 10px;
}

.reference-line {
  color: var(--olive-620);
  font-size: 0.95rem;
  font-weight: 700;
}

.references {
  margin-top: 28px;
  padding: 30px;
  border-radius: var(--radius-md);
  background: var(--sand-100);
  border: 1px solid rgba(52, 35, 29, 0.08);
}

.references h3 {
  margin-bottom: 18px;
}

.references ol {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 12px;
}

.citation {
  display: inline-flex;
  align-items: center;
  color: var(--brown-740);
  font-weight: 800;
}

.citation-light {
  color: var(--sand-180);
}

.contact-section {
  padding-top: 72px;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 24px;
  align-items: start;
}

.contact-copy {
  padding: 34px;
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(243, 235, 223, 0.86));
  border: 1px solid rgba(52, 35, 29, 0.08);
  box-shadow: var(--shadow-lg);
}

.contact-points {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.contact-form {
  display: grid;
  gap: 16px;
  padding: 28px;
}

.form-botcheck {
  display: none;
}

.contact-form label {
  display: grid;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 700;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid rgba(52, 35, 29, 0.12);
  border-radius: 16px;
  background: var(--sand-050);
  color: var(--charcoal-900);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid rgba(107, 113, 92, 0.24);
  border-color: rgba(107, 113, 92, 0.42);
}

.consent-check {
  grid-template-columns: 20px 1fr;
  align-items: start;
  gap: 12px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--charcoal-700);
}

.consent-check input {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  padding: 0;
}

.consent-check a,
.form-note a,
.legal-links a,
.legal-copy a,
.back-link {
  color: var(--brown-740);
  text-decoration: underline;
  text-underline-offset: 0.16em;
}

.form-note {
  margin: 0;
  color: var(--charcoal-700);
  font-size: 0.84rem;
}

.h-captcha {
  min-height: 78px;
}

.site-footer {
  padding: 28px 0 40px;
}

.footer-grid {
  display: grid;
  gap: 12px;
  color: var(--charcoal-700);
  font-size: 0.92rem;
}

.legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.legal-page {
  min-height: 100vh;
  background:
    radial-gradient(circle at top right, rgba(216, 195, 165, 0.18), transparent 24%),
    var(--sand-050);
}

.legal-shell {
  width: min(calc(100% - (var(--gutter) * 2)), 900px);
  margin: 0 auto;
  padding: 72px 0 88px;
}

.legal-copy {
  padding: 36px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(52, 35, 29, 0.08);
  box-shadow: var(--shadow-lg);
}

.legal-copy h1 {
  margin-bottom: 18px;
}

.legal-copy h2 {
  margin-top: 32px;
  margin-bottom: 12px;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
}

.legal-copy p,
.legal-copy li {
  color: var(--charcoal-700);
}

.legal-copy ul {
  padding-left: 22px;
}

.legal-meta {
  margin-bottom: 26px;
  color: var(--charcoal-700);
  font-size: 0.92rem;
}

.back-link {
  display: inline-flex;
  margin-bottom: 22px;
  font-weight: 700;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 560ms ease, transform 560ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1100px) {
  .hero-grid,
  .intro-grid,
  .quality-grid,
  .contact-grid,
  .product-grid,
  .spec-grid {
    grid-template-columns: 1fr;
  }

  .benefit-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .application-grid,
  .evidence-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero {
    min-height: auto;
  }

  .intro-grid {
    transform: translateY(-54px);
  }
}

@media (max-width: 820px) {
  .section {
    padding: 88px 0;
  }

  .header-inner {
    min-height: 72px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: fixed;
    inset: 72px 16px auto;
    display: grid;
    gap: 8px;
    padding: 18px;
    background: rgba(251, 247, 240, 0.98);
    border: 1px solid rgba(52, 35, 29, 0.1);
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 180ms ease, transform 180ms ease;
  }

  .site-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav a {
    padding: 12px 14px;
  }

  .comparison-desktop {
    display: none;
  }

  .comparison-mobile {
    display: grid;
  }

  .benefit-grid,
  .application-grid,
  .evidence-grid {
    grid-template-columns: 1fr;
  }

  .product-card {
    grid-template-rows: 220px 1fr;
  }

  .intro-grid {
    padding: 28px;
  }
}

@media (max-width: 560px) {
  :root {
    --gutter: 18px;
  }

  h1 {
    max-width: none;
    font-size: clamp(2.8rem, 14vw, 4rem);
  }

  h2 {
    max-width: none;
  }

  .hero-grid {
    padding-top: 56px;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .button {
    min-height: 52px;
  }

  .intro-grid {
    transform: translateY(-40px);
  }

  .product-body,
  .comparison-mobile-card,
  .benefit-card,
  .application-card,
  .spec-card,
  .evidence-card,
  .contact-copy,
  .contact-form,
  .quality-copy,
  .legal-copy {
    padding: 22px;
  }

  .comparison-table th,
  .comparison-table td,
  .spec-table th,
  .spec-table td {
    padding: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}