:root {
  --graphite: #16202a;
  --ink: #26313d;
  --steel: #667482;
  --silver: #d8dde2;
  --pearl: #f7f8f8;
  --bismuth: #315f72;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: linear-gradient(180deg, #fff 0%, var(--pearl) 48%, #eef1f3 100%);
  color: var(--graphite);
  font-family: Arial, Helvetica, sans-serif;
}
a { color: inherit; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 78px;
  padding: 14px clamp(20px, 4vw, 48px);
  border-bottom: 1px solid var(--silver);
  background: rgba(255,255,255,.94);
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand strong { display: block; letter-spacing: .16em; text-transform: uppercase; font-size: 13px; }
.brand small { display: block; color: var(--steel); margin-top: 4px; }
.mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--silver);
  background: var(--pearl);
  color: var(--bismuth);
  font-weight: 800;
}
.nav { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.nav a {
  padding: 9px 11px;
  text-decoration: none;
  color: var(--steel);
  font-size: 14px;
  font-weight: 700;
}
.nav a:hover, .nav a.active { background: var(--pearl); color: var(--graphite); }
.admin-link { border: 1px solid var(--silver); }
.hero, .section {
  max-width: 1240px;
  margin: 0 auto;
  padding: clamp(42px, 7vw, 82px) clamp(20px, 4vw, 48px);
}
.hero {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 40px;
  align-items: center;
}
.eyebrow {
  color: var(--bismuth);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .18em;
  text-transform: uppercase;
}
h1 { font-size: clamp(38px, 6vw, 68px); line-height: 1.03; margin: 14px 0; }
h2 { font-size: clamp(28px, 4vw, 42px); margin: 0 0 22px; }
h3 { margin: 0 0 12px; }
p { color: var(--steel); line-height: 1.7; }
.lead { font-size: 18px; max-width: 820px; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--silver);
  background: #fff;
  color: var(--graphite);
  padding: 10px 18px;
  text-decoration: none;
  font-weight: 800;
  cursor: pointer;
}
.button.primary { background: var(--graphite); color: #fff; border-color: var(--graphite); }
.spec-panel, .card, .admin-card, .login-box {
  border: 1px solid var(--silver);
  background: #fff;
  box-shadow: 0 18px 60px rgba(22,32,42,.08);
  padding: 24px;
}
.spec-panel { background: linear-gradient(135deg, rgba(255,255,255,.96), rgba(235,239,242,.88)); }
.sample-visual {
  position: relative;
  overflow: hidden;
}
.sample-visual > span {
  position: absolute;
  display: block;
  border: 1px solid rgba(102,116,130,.25);
  background: linear-gradient(135deg, rgba(255,255,255,.95), rgba(216,221,226,.7));
}
.sample-visual > span:nth-child(1) { width: 92px; height: 58px; right: 34px; top: 28px; }
.sample-visual > span:nth-child(2) { width: 64px; height: 64px; right: 126px; top: 78px; border-radius: 50%; }
.sample-visual > span:nth-child(3) { width: 128px; height: 18px; right: 42px; top: 156px; background: linear-gradient(90deg, #d9dde0, #b9c7ce, #eee); }
dl { display: grid; grid-template-columns: 130px 1fr; gap: 12px; }
dt { font-weight: 800; }
dd { margin: 0; color: var(--steel); }
.intro { border-left: 4px solid var(--bismuth); background: #fff; margin-top: 20px; }
.intro p { font-size: 18px; color: var(--ink); }
.cards { display: grid; gap: 18px; }
.cards.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cards.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cards.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.cards.five { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.cards.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card.compact { box-shadow: none; }
.feature-card {
  border-top: 4px solid var(--bismuth);
}
.kit-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.kit-card {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 12px;
}
.kit-card h4 {
  margin: 6px 0 0;
  color: var(--graphite);
}
.kit-image {
  width: 100%;
  height: 150px;
  object-fit: cover;
  border: 1px solid var(--silver);
  background: var(--pearl);
}
.material-family {
  width: fit-content;
  border-left: 3px solid var(--bismuth);
  background: var(--pearl);
  color: var(--graphite);
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 800;
}
.status-badge {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  border: 1px solid rgba(49,95,114,.28);
  background: rgba(49,95,114,.08);
  color: var(--bismuth);
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .08em;
}
.material-chipset {
  display: flex;
  gap: 8px;
}
.material-chipset span {
  display: block;
  height: 30px;
  border: 1px solid var(--silver);
  background: linear-gradient(135deg, #fff, #d8dde2);
}
.material-chipset span:nth-child(1) { width: 62px; }
.material-chipset span:nth-child(2) { width: 42px; border-radius: 50%; background: radial-gradient(circle at 35% 35%, #fff, #bdd3d9 45%, #8d785e); }
.material-chipset span:nth-child(3) { width: 86px; background: linear-gradient(90deg, #c27f4a, #d8dde2, #315f72); }
.text-link {
  color: var(--bismuth);
  font-weight: 800;
  text-decoration: none;
}
.small-note {
  color: var(--steel);
  font-size: 13px;
  line-height: 1.6;
}
.item-list { display: grid; gap: 8px; padding-left: 18px; color: var(--ink); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips span { border: 1px solid var(--silver); background: var(--pearl); padding: 8px 12px; font-weight: 700; }
.table-wrap { overflow-x: auto; border: 1px solid var(--silver); background: #fff; }
table { width: 100%; min-width: 780px; border-collapse: collapse; }
th { background: var(--graphite); color: #fff; text-align: left; padding: 14px; }
td { border-bottom: 1px solid var(--silver); padding: 14px; vertical-align: top; color: var(--steel); }
td:first-child { color: var(--graphite); font-weight: 800; }
.disclaimer, .success { border: 1px solid var(--silver); background: #fff; padding: 16px; }
.success { border-color: rgba(49,95,114,.3); background: rgba(49,95,114,.1); color: var(--graphite); font-weight: 800; }
.process-timeline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  counter-reset: process;
}
.timeline-step {
  position: relative;
  border: 1px solid var(--silver);
  background: #fff;
  padding: 22px;
}
.timeline-step:before {
  counter-increment: process;
  content: counter(process);
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 16px;
  background: var(--graphite);
  color: #fff;
  font-weight: 800;
}
.sample-card {
  min-height: 150px;
}
.sample-dot {
  display: block;
  width: 36px;
  height: 36px;
  border: 1px solid var(--silver);
  background: radial-gradient(circle at 30% 25%, #fff, #d8dde2 48%, #315f72);
  margin-bottom: 14px;
}
.contact-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  border: 1px solid var(--silver);
  background: #fff;
  padding: 24px;
}
.rfq-form {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
label { display: grid; gap: 7px; font-size: 14px; font-weight: 800; color: var(--graphite); }
input, textarea, select {
  width: 100%;
  border: 1px solid var(--silver);
  background: var(--pearl);
  padding: 11px;
  font: inherit;
}
textarea { min-height: 110px; resize: vertical; }
.full { grid-column: 1 / -1; }
.checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.5;
}
.checkbox input {
  width: auto;
  margin-top: 4px;
}
.footer {
  display: grid;
  grid-template-columns: 1.4fr .8fr .8fr;
  gap: 30px;
  background: var(--graphite);
  color: #fff;
  padding: 42px clamp(20px, 4vw, 48px);
}
.footer p, .footer a { color: rgba(255,255,255,.78); }
.footer .small { font-size: 13px; }
.copyright { background: var(--graphite); border-top: 1px solid rgba(255,255,255,.1); color: rgba(255,255,255,.6); padding: 18px clamp(20px, 4vw, 48px); font-size: 12px; }

.admin-body { background: var(--pearl); }
.admin-shell { max-width: 1280px; margin: 0 auto; padding: 28px; }
.admin-top { display: flex; justify-content: space-between; gap: 20px; align-items: end; border: 1px solid var(--silver); background: #fff; padding: 24px; margin-bottom: 18px; }
.admin-grid { display: grid; gap: 18px; }
.admin-card { display: grid; gap: 14px; margin-bottom: 18px; }
.admin-card h2 { font-size: 24px; margin: 0; }
.sticky-save { position: sticky; bottom: 18px; justify-self: start; }
.login-box { max-width: 440px; margin: 12vh auto; display: grid; gap: 14px; }
.upload-form { display: grid; grid-template-columns: 1fr 1fr auto; gap: 14px; align-items: end; }
.asset-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.asset { border: 1px solid var(--silver); padding: 12px; display: grid; gap: 8px; font-size: 13px; overflow: hidden; }
.asset img { width: 100%; height: 120px; object-fit: cover; background: var(--pearl); }
code, pre { white-space: pre-wrap; word-break: break-word; color: var(--steel); }
.enquiry { border: 1px solid var(--silver); padding: 12px; }

@media (max-width: 980px) {
  .site-header, .hero, .footer, .admin-top { grid-template-columns: 1fr; flex-direction: column; align-items: stretch; }
  .hero, .cards.two, .cards.three, .cards.four, .cards.five, .kit-grid, .process-timeline, .footer, .contact-form, .rfq-form, .upload-form, .asset-grid { grid-template-columns: 1fr; }
  .nav { justify-content: flex-start; }
}