:root {
  --ink: #122019;
  --muted: #5b6b62;
  --line: #dbe4de;
  --paper: #f6f8f5;
  --white: #ffffff;
  --green: #1f7a4d;
  --green-dark: #145f3b;
  --amber: #c88624;
  --blue: #2f6f8f;
  --shadow: 0 22px 70px rgba(18, 32, 25, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 56px);
  color: var(--white);
  transition: background 180ms ease, box-shadow 180ms ease, color 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 1px 20px rgba(18, 32, 25, 0.1);
  color: var(--ink);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: max-content;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 2px solid currentColor;
  border-radius: 50%;
  font-weight: 800;
  font-size: 13px;
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.05;
}

.brand small {
  color: currentColor;
  opacity: 0.72;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  justify-content: center;
  gap: clamp(14px, 3vw, 34px);
  font-size: 14px;
  font-weight: 700;
}

.nav a {
  opacity: 0.84;
}

.nav a:hover {
  opacity: 1;
}

.header-cta,
.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-weight: 800;
  cursor: pointer;
}

.header-cta {
  color: var(--ink);
  background: var(--white);
}

.site-header.is-scrolled .header-cta,
.button.primary {
  color: var(--white);
  background: var(--green);
}

.button.primary:hover {
  background: var(--green-dark);
}

.button.secondary {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.1);
}

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
}

.hero-image,
.hero-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
  z-index: -2;
}

.hero-overlay {
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(10, 24, 17, 0.88) 0%, rgba(10, 24, 17, 0.62) 42%, rgba(10, 24, 17, 0.16) 100%),
    linear-gradient(0deg, rgba(10, 24, 17, 0.6), transparent 38%);
}

.hero-content {
  width: min(760px, calc(100% - 36px));
  margin-left: clamp(18px, 8vw, 112px);
  padding-top: 70px;
  color: var(--white);
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: #78c99b;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 820px;
  margin-bottom: 22px;
  font-size: clamp(46px, 7vw, 86px);
  line-height: 0.98;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(30px, 4.6vw, 56px);
  line-height: 1.02;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.hero-copy {
  max-width: 690px;
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.55;
}

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

.intro,
.split-section,
.materials,
.process,
.contact-section {
  padding: clamp(70px, 9vw, 118px) clamp(18px, 6vw, 88px);
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(280px, 0.72fr);
  gap: clamp(30px, 8vw, 100px);
  background: var(--white);
}

.intro p:last-child,
.section-copy p,
.section-heading p,
.contact-copy p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.72;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
  gap: clamp(30px, 7vw, 86px);
  align-items: start;
}

.check-list {
  display: grid;
  gap: 14px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 30px;
  color: var(--ink);
  font-weight: 700;
  line-height: 1.5;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 5px rgba(31, 122, 77, 0.14);
}

.metric-panel {
  display: grid;
  gap: 14px;
}

.metric-panel div,
.material-grid article,
.timeline article,
.contact-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.metric-panel div {
  padding: 26px;
}

.metric-panel span,
.timeline span {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  margin-bottom: 18px;
  border-radius: 50%;
  color: var(--white);
  background: var(--green);
  font-size: 13px;
  font-weight: 800;
}

.metric-panel strong {
  display: block;
  margin-bottom: 8px;
  font-size: 20px;
}

.metric-panel p,
.material-grid p,
.timeline p,
.contact-card small {
  color: var(--muted);
  line-height: 1.6;
}

.materials {
  background: #e9f0eb;
}

.section-heading {
  max-width: 850px;
  margin-bottom: 34px;
}

.material-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.material-grid article {
  padding: 30px;
  min-height: 245px;
}

.material-swatch {
  display: block;
  width: 56px;
  height: 56px;
  margin-bottom: 28px;
  border-radius: 50%;
}

.material-swatch.recycled {
  background: linear-gradient(135deg, #1f7a4d, #9fc45b);
}

.material-swatch.prime {
  background: linear-gradient(135deg, #2f6f8f, #b9d7df);
}

.material-swatch.custom {
  background: linear-gradient(135deg, #c88624, #e8d393);
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.timeline article {
  padding: 28px;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 0.72fr);
  gap: clamp(30px, 7vw, 84px);
  background: var(--ink);
  color: var(--white);
}

.contact-section .section-kicker {
  color: #93d5ad;
}

.contact-copy p {
  color: rgba(255, 255, 255, 0.76);
}

.contact-card {
  display: grid;
  gap: 8px;
  max-width: 420px;
  margin-top: 28px;
  padding: 22px;
  color: var(--ink);
}

.contact-card a {
  color: var(--green);
  font-weight: 800;
}

.inquiry-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-self: start;
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

label {
  display: grid;
  gap: 8px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  padding: 13px 14px;
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
  font: inherit;
}

select option {
  color: var(--ink);
}

textarea {
  resize: vertical;
}

.full {
  grid-column: 1 / -1;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(18px, 6vw, 88px);
  color: var(--muted);
  background: var(--white);
  font-size: 14px;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 900px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .nav {
    display: none;
  }

  .intro,
  .split-section,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .material-grid,
  .timeline {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 14px 16px;
  }

  .header-cta {
    min-height: 40px;
    padding: 0 12px;
    font-size: 13px;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .hero {
    min-height: 88vh;
  }

  .hero-content {
    width: calc(100% - 32px);
    margin: 0 16px;
  }

  .hero-copy {
    font-size: 17px;
  }

  .material-grid,
  .timeline,
  .inquiry-form {
    grid-template-columns: 1fr;
  }

  .site-footer {
    display: grid;
  }
}