/* ============================================================
   Aevum Polymers — design tokens
   ============================================================ */
:root {
  /* color — sampled directly from the Aevum Polymers logomark */
  --ink: #0b0a08;
  --paper: #f7f3e9;
  --paper-dim: #eee7d5;
  --teal-900: #0a2445;   /* darkened navy, dark-section background */
  --teal-800: #0e3362;
  --teal-700: #12427e;   /* sampled logo navy */
  --green-600: #2a725a;  /* sampled logo green */
  --green-700: #205644;  /* darker, AA-safe for small text on paper */
  --green-500: #75a394;
  --bronze-500: #bd995b; /* sampled logo gold */
  --bronze-600: #a1824d;
  --bronze-700: #846b40; /* darker, AA-safe for small text on paper */
  --slate-500: #5c574c;
  --line: rgba(11, 10, 8, 0.13);
  --line-dark: rgba(247, 243, 233, 0.18);

  /* type */
  --font-display: "Space Grotesk", "General Sans", sans-serif;
  --font-body: "IBM Plex Sans", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;

  --fs-h1: clamp(2.5rem, 1.2rem + 5vw, 5rem);
  --fs-h2: clamp(2.1rem, 1.1rem + 2.8vw, 3.2rem);
  --fs-h3: clamp(1.4rem, 1rem + 1.1vw, 1.75rem);
  --fs-lead: clamp(1.15rem, 1rem + 0.5vw, 1.4rem);
  --fs-body: 1.0625rem;
  --fs-small: 0.9375rem;
  --fs-mono: 0.85rem;

  --container: 1240px;
  --edge: clamp(1.25rem, 4vw, 3.5rem);
}

/* ============================================================
   Reset / base
   ============================================================ */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; }
button { font-family: inherit; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  margin: 0;
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 600;
}

p { margin: 0; }

.wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--edge);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--green-700);
  display: flex;
  align-items: center;
  gap: 0.6em;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--green-700);
  display: inline-block;
}
section[data-tone="dark"] .eyebrow {
  color: var(--paper);
}
section[data-tone="dark"] .eyebrow::before {
  background: var(--bronze-500);
}

.lead {
  font-size: var(--fs-lead);
  color: var(--slate-500);
  max-width: 46ch;
}

/* Focus states */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--green-600);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.9em 1.5em;
  border-radius: 3px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, background 0.2s ease, border-color 0.2s ease, color .2s ease;
  min-height: 44px;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.btn-primary:hover { background: var(--teal-900); border-color: var(--teal-900); }
.btn-primary::after {
  content: "→";
  transition: transform 0.2s ease;
}
.btn-primary:hover::after { transform: translateX(3px); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--ink); }

section[data-tone="dark"] .btn-ghost {
  color: var(--paper);
  border-color: var(--line-dark);
}
section[data-tone="dark"] .btn-ghost:hover { border-color: var(--paper); }

.btn-on-dark {
  background: var(--paper);
  color: var(--teal-900);
  border-color: var(--paper);
}
.btn-on-dark:hover { background: var(--bronze-500); border-color: var(--bronze-500); color: var(--ink); }

/* ============================================================
   Header
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(246, 242, 233, 0.92);
  backdrop-filter: saturate(140%) blur(6px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--ink);
}
.brand img { height: 40px; width: auto; }
.brand-word {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}
.brand-word b { color: var(--bronze-600); font-weight: 700; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.1rem;
}
.nav-links a:not(.btn):not(.lang-switch) {
  font-size: 0.94rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--ink);
  position: relative;
  padding: 0.3rem 0;
}
.nav-links a:not(.btn):not(.lang-switch)::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: -2px;
  height: 2px;
  background: var(--green-600);
  transition: right 0.2s ease;
}
.nav-links a:not(.btn):not(.lang-switch):hover::after { right: 0; }

.nav-links a.lang-switch {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  border: 1px solid var(--line);
  padding: 0.35em 0.65em;
  border-radius: 2px;
  text-decoration: none;
  color: var(--ink);
}
.nav-links a.lang-switch:hover { border-color: var(--ink); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  position: relative;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle span::before { position: absolute; top: -7px; }
.nav-toggle span::after { position: absolute; top: 7px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  padding: clamp(3rem, 6vw, 6.5rem) 0 clamp(3.5rem, 7vw, 7rem);
  overflow: hidden;
}
.hero .wrap {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.hero-copy h1 { margin: 1.1rem 0 1.4rem; }
.hero-copy .lead { margin-bottom: 2.1rem; }
.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  flex-wrap: wrap;
}
.hero-actions .btn-ghost { border-color: var(--line); }

.hero-visual {
  position: relative;
  aspect-ratio: 1 / 1;
  width: min(100%, 560px);
  margin-inline: auto;
}
@media (min-width: 1200px) {
  .hero-visual { width: min(100%, 640px); }
}
.hero-ring {
  position: absolute;
  inset: 12%;
  border-radius: 50%;
  border: 1px dashed var(--line);
}
.hero-core {
  position: absolute;
  inset: 34%;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 28%, var(--teal-700), var(--teal-900) 70%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 20px 40px -20px rgba(14, 58, 61, 0.55);
}
.hero-core img { height: 64%; width: auto; }

.grade-chip {
  position: absolute;
  transform: translate(-50%, -50%);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  letter-spacing: 0.03em;
  background: var(--paper);
  border: 1px solid var(--ink);
  padding: 0.4em 0.75em;
  border-radius: 2px;
  white-space: nowrap;
}
.grade-chip.hp { border-color: var(--bronze-500); color: var(--bronze-700); }

.hero-caption {
  position: absolute;
  bottom: -2.4rem;
  left: 0;
  right: 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--slate-500);
  letter-spacing: 0.05em;
}

/* mobile hero chip cloud (hidden by default, shown under small breakpoint) */
.chip-cloud {
  display: none;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1.75rem;
}
.chip-cloud .grade-chip { position: static; transform: none; }

/* ============================================================
   Hero slideshow (industry segments)
   ============================================================ */
.slide { display: none; }
.slide.active { display: block; animation: heroFade 0.5s ease; }
@keyframes heroFade {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}
.slide-tag { margin-bottom: 1.1rem; }
.slide h1 { margin: 0 0 1.4rem; }
.slide .lead { margin-bottom: 0; }

.hero-bottom { margin-top: clamp(2.5rem, 5vw, 4rem); }
.hero-progress-track {
  height: 2px;
  background: var(--line);
  margin-bottom: 1.5rem;
}
.hero-progress {
  height: 100%;
  width: 0%;
  background: var(--bronze-500);
}
.hero-segs {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.75rem;
}
.hero-seg {
  background: none;
  border: none;
  border-top: 2px solid var(--line);
  text-align: left;
  padding: 0.85rem 0 0;
  cursor: pointer;
  display: grid;
  gap: 0.4rem;
  font-family: var(--font-body);
}
.hero-seg .seg-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--slate-500);
}
.hero-seg .seg-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--slate-500);
}
.hero-seg.active { border-top-color: var(--bronze-500); }
.hero-seg.active .seg-num,
.hero-seg.active .seg-title { color: var(--ink); }

/* ============================================================
   Stats bar
   ============================================================ */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.stat {
  border-top: 2px solid var(--bronze-500);
  padding-top: 1.1rem;
}
.stat-num {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 1.3rem + 1.6vw, 2.6rem);
  font-weight: 700;
  line-height: 1;
}
.stat-label {
  margin-top: 0.6rem;
  font-size: 0.9rem;
  color: var(--slate-500);
}

/* ============================================================
   Section scaffolding
   ============================================================ */
section { padding: clamp(3.5rem, 7vw, 6.5rem) 0; }
section[data-tone="dark"] {
  background: var(--teal-900);
  color: var(--paper);
}
section[data-tone="dim"] { background: var(--paper-dim); }

.section-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: clamp(2.25rem, 5vw, 3.5rem);
}
.section-head h2 { margin-top: 0.9rem; max-width: 18ch; }

/* ============================================================
   About
   ============================================================ */
.about .wrap {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: start;
}
.about-statement {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 1.1rem + 1.3vw, 2rem);
  line-height: 1.28;
  letter-spacing: -0.01em;
}
.about-body p + p { margin-top: 1.1rem; }
.about-body { color: var(--slate-500); font-size: 1.03rem; }
.about-roles {
  margin-top: 2.25rem;
  border-top: 1px solid var(--line);
  padding-top: 1.5rem;
  display: grid;
  gap: 1.25rem;
}
.role-row {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 1.25rem;
  align-items: baseline;
}
.role-row .role-tag {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  color: var(--green-700);
}
.role-row strong { font-family: var(--font-display); font-weight: 600; }

.partner-card {
  margin-top: 2.25rem;
  border: 1px solid var(--line);
  padding: clamp(1.5rem, 2.5vw, 2rem);
}
.partner-card .partner-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bronze-700);
  margin-bottom: 0.75rem;
}
.partner-card p.partner-body {
  font-size: 0.92rem;
  color: var(--slate-500);
  line-height: 1.75;
}
.partner-kpis {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}
.pkpi-num {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
}
.pkpi-label {
  margin-top: 0.35rem;
  font-size: 0.78rem;
  color: var(--slate-500);
}

.supplier-network {
  grid-column: 1 / -1;
  margin-top: clamp(2.5rem, 5vw, 3.5rem);
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}
.supplier-network-label {
  font-size: 0.85rem;
  color: var(--slate-500);
  margin-bottom: 1.25rem;
}
.supplier-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.supplier-grid span {
  display: block;
  padding: 0.85rem 1rem;
  font-family: var(--font-body);
  font-size: 0.92rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  min-height: 1.2em;
}

/* ============================================================
   Products
   ============================================================ */
.materials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.material-card {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: clamp(1.5rem, 2.5vw, 2.25rem);
  position: relative;
}
.material-card .idx {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  color: var(--slate-500);
}
.material-card h3 { margin-top: 0.9rem; }
.material-card p.desc {
  color: var(--slate-500);
  margin-top: 0.7rem;
  max-width: 44ch;
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.35rem;
}
.chips .grade-chip { position: static; transform: none; }

.material-card.featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  background: var(--teal-900);
  color: var(--paper);
  border-color: var(--teal-900);
}
.material-card.featured .idx { color: var(--bronze-500); }
.material-card.featured p.desc { color: var(--paper); }
.material-card.featured .chips .grade-chip {
  border-color: var(--line-dark);
  background: transparent;
  color: var(--paper);
}
.featured-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
  align-content: center;
  font-size: 0.98rem;
}
.featured-list li {
  padding-left: 1.15rem;
  position: relative;
  color: var(--paper);
}
.featured-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.55em;
  width: 6px; height: 6px;
  background: var(--bronze-500);
}

/* ============================================================
   Sustainability / circular chain
   ============================================================ */
.loop {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-top: 3rem;
  counter-reset: loopstep;
}
.loop-step {
  border-top: 2px solid var(--bronze-500);
  padding-top: 1.1rem;
}
.loop-step .num {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  color: var(--bronze-500);
}
.loop-step h4 { margin-top: 0.6rem; font-size: 1.05rem; }
.loop-step p { margin-top: 0.5rem; color: var(--paper); font-size: 0.95rem; }

.sustain .lead { color: var(--paper); }

.sustain-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2.5rem, 5vw, 4rem);
  margin-top: 3rem;
  align-items: start;
}
.sustain-steps { display: grid; gap: 1.6rem; }
.sustain-step {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 1.1rem;
  border-top: 1px solid var(--line-dark);
  padding-top: 1.25rem;
}
.sustain-step .step-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--bronze-500);
}
.sustain-step .step-title {
  font-weight: 600;
  color: var(--paper);
}
.sustain-step .step-body {
  margin-top: 0.4rem;
  font-size: 0.92rem;
  color: var(--paper);
}

.sustain-quote {
  border: 1px solid var(--line-dark);
  padding: clamp(1.5rem, 2.5vw, 1.75rem);
  margin-bottom: 1.5rem;
}
.sustain-quote p {
  font-size: 0.95rem;
  color: var(--paper);
  line-height: 1.75;
}
.sustain-kpi-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
.skpi { border-top: 2px solid var(--bronze-500); padding-top: 0.9rem; }
.skpi-num {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--paper);
}
.skpi-label {
  margin-top: 0.4rem;
  font-size: 0.82rem;
  color: var(--paper);
}

/* ============================================================
   Grades database
   ============================================================ */
.grades-header {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(2rem, 4vw, 3rem);
  align-items: end;
  margin-bottom: clamp(2.5rem, 5vw, 3.5rem);
}
.grades-header .section-head { margin-bottom: 0; }
.filter-label {
  font-size: 0.85rem;
  color: var(--slate-500);
  margin-bottom: 0.75rem;
}
.filter-bar { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  background: var(--paper);
  border: 1px solid var(--line);
  color: var(--slate-500);
  padding: 0.5em 0.85em;
  border-radius: 2px;
  cursor: pointer;
  min-height: 36px;
}
.filter-btn:hover { border-color: var(--ink); color: var(--ink); }
.filter-btn.active { background: var(--ink); border-color: var(--ink); color: var(--paper); }

.polymer-family {
  border: 1px solid var(--line);
  border-top: none;
}
.polymer-family:first-child { border-top: 1px solid var(--line); }
.polymer-family + .polymer-family { margin-top: -1px; border-top: 1px solid var(--line); }

.family-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.25rem clamp(1.25rem, 3vw, 1.75rem);
  cursor: pointer;
  background: var(--paper);
}
.family-header:hover { background: var(--paper-dim); }
.family-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  margin-right: 1rem;
}
.family-desc {
  font-size: 0.85rem;
  color: var(--slate-500);
}
.family-count {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--slate-500);
  white-space: nowrap;
}
.family-chevron {
  font-size: 0.8rem;
  color: var(--bronze-600);
  display: inline-block;
  width: 1em;
}

.family-body { display: none; border-top: 1px solid var(--line); }
.family-body.open { display: block; }

.grades-table-wrap { overflow-x: auto; }
table.grades-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  min-width: 760px;
}
.grades-table th {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--slate-500);
  text-align: left;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
.grades-table td {
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  color: var(--ink);
}
.grades-table tbody tr:nth-child(even) { background: rgba(11, 10, 8, 0.02); }
.grades-table tbody tr:hover { background: var(--paper-dim); }
.grades-table tbody tr:last-child td { border-bottom: none; }

.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.02em;
  padding: 0.25em 0.55em;
  border: 1px solid;
  border-radius: 2px;
  white-space: nowrap;
  margin: 0 0.25em 0.25em 0;
}
.badge-gold { border-color: var(--bronze-500); color: var(--bronze-700); }
.badge-teal { border-color: var(--green-600); color: var(--green-700); }
.badge-blue { border-color: var(--teal-700); color: var(--teal-700); }

.grades-footnote {
  margin-top: 2rem;
  font-size: 0.85rem;
  color: var(--slate-500);
  text-align: center;
}

/* ============================================================
   Contact
   ============================================================ */
.contact .wrap {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2.5rem, 6vw, 5rem);
}
.contact-note p + p { margin-top: 1rem; }
.contact-note { color: var(--slate-500); }

.contact-info {
  margin-top: 2.25rem;
  display: grid;
  gap: 1.5rem;
  border-top: 1px solid var(--line);
  padding-top: 1.75rem;
}
.ci-item {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 1rem;
  align-items: start;
}
.ci-icon {
  width: 32px;
  height: 32px;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bronze-600);
}
.ci-icon svg { width: 16px; height: 16px; fill: currentColor; }
.ci-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--slate-500);
}
.ci-val { margin-top: 0.3rem; font-size: 0.98rem; }
.ci-val a { text-decoration: none; }
.ci-val a:hover { color: var(--green-700); }

form.quote-form {
  display: grid;
  gap: 1.15rem;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.15rem;
}
.field { display: grid; gap: 0.45rem; }
.field label {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.field input,
.field select,
.field textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.8em 0.9em;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  border-radius: 2px;
  min-height: 44px;
}
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus,
.field select:focus,
.field textarea:focus { border-color: var(--green-600); }

.form-status {
  font-size: 0.9rem;
  color: var(--green-700);
  display: none;
  margin-top: 0.9rem;
}
.form-status.visible { display: block; }
.form-status.is-error { color: #a13d2b; }

.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: var(--ink);
  color: rgba(246,242,233,0.75);
  padding: 3.5rem 0 2rem;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(246,242,233,0.14);
}
.footer-brand .brand-word { color: var(--paper); }
.footer-brand p { margin-top: 1rem; max-width: 32ch; font-size: 0.92rem; }
.footer-col h5 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(246,242,233,0.5);
  margin-bottom: 1rem;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.65rem; }
.footer-col a { text-decoration: none; font-size: 0.92rem; }
.footer-col a:hover { color: var(--paper); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.5rem;
  font-size: 0.82rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ============================================================
   Terms & Conditions modal
   ============================================================ */
.terms-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: var(--teal-900);
  overflow-y: auto;
  padding: clamp(3rem, 8vw, 5rem) var(--edge) 4rem;
}
.terms-modal.open { display: block; }
.terms-inner { max-width: 780px; margin: 0 auto; color: var(--paper); }
.terms-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.5rem;
  border-bottom: 1px solid var(--line-dark);
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
}
.terms-head .eyebrow { color: var(--bronze-500); margin-bottom: 0.6rem; }
.terms-head .eyebrow::before { background: var(--bronze-500); }
.terms-head h2 { font-size: 1.9rem; }
.terms-meta { margin-top: 0.6rem; font-size: 0.82rem; color: var(--paper); }
.terms-close {
  flex-shrink: 0;
  background: transparent;
  border: 1px solid var(--line-dark);
  color: var(--paper);
  padding: 0.6em 1.1em;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  cursor: pointer;
  border-radius: 2px;
}
.terms-close:hover { border-color: var(--paper); }

.t-h2 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--bronze-500);
  margin: 2.25rem 0 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--line-dark);
}
.t-p { font-size: 0.92rem; color: var(--paper); line-height: 1.8; margin-bottom: 0.85rem; }
.t-li {
  font-size: 0.92rem;
  color: var(--paper);
  line-height: 1.8;
  padding: 0.4rem 0 0.4rem 1.1rem;
  border-left: 2px solid var(--line-dark);
  margin-bottom: 0.4rem;
}
.t-a { color: var(--bronze-500); }
.terms-inner strong { color: var(--paper); }
.terms-foot { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--line-dark); text-align: center; }

/* ============================================================
   Scroll reveal
   ============================================================ */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
[data-reveal].is-visible { opacity: 1; transform: none; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
  .about .wrap,
  .contact .wrap,
  .sustain-grid { grid-template-columns: 1fr; }
  .materials-grid { grid-template-columns: repeat(2, 1fr); }
  .material-card.featured { grid-template-columns: 1fr; }
  .loop { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .grades-header { grid-template-columns: 1fr; align-items: start; }
  .hero-segs { grid-template-columns: repeat(3, 1fr); row-gap: 1.25rem; }
  .partner-kpis { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }

  .site-header.menu-open .nav-links {
    display: flex;
    position: fixed;
    top: 78px;
    left: 0;
    right: 0;
    height: calc(100vh - 78px);
    background: var(--paper);
    flex-direction: column;
    align-items: flex-start;
    padding: 2rem var(--edge);
    gap: 1.75rem;
    overflow-y: auto;
  }
  .site-header.menu-open .nav-links a:not(.btn) { font-size: 1.15rem; }

  .hero .wrap { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .chip-cloud { display: flex; }

  .form-row { grid-template-columns: 1fr; }
  .materials-grid { grid-template-columns: 1fr; }
  .family-desc { display: none; }
}

@media (max-width: 640px) {
  .loop { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .hero-segs { grid-template-columns: repeat(2, 1fr); }
  .partner-kpis { grid-template-columns: 1fr 1fr; }
  .sustain-kpi-grid { grid-template-columns: 1fr 1fr; }
  .terms-head { flex-direction: column; }
  .supplier-grid { grid-template-columns: 1fr 1fr; }
}