/* =========================================================
   Unistec Ferrum — site stylesheet
   Palette: charcoal, steel grey, white, molten orange
   ========================================================= */

:root {
  --charcoal: #15171a;
  --charcoal-2: #1d2024;
  --graphite: #272b31;
  --steel-900: #3a4048;
  --steel-700: #5b636d;
  --steel-500: #8a929c;
  --steel-300: #c3c9d0;
  --steel-100: #e7eaed;
  --paper: #f5f5f3;
  --white: #ffffff;
  --molten: #ef6a1f;
  --molten-hot: #ff8a2b;
  --molten-deep: #c4501a;
  --glow: rgba(239, 106, 31, 0.35);

  --ink: #1b1e22;
  --ink-soft: #4a515a;

  --font-display: "Archivo", "Arial Narrow", system-ui, sans-serif;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --wrap: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 4px;
  --header-h: 76px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
p { margin: 0 0 1.1em; }
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-stretch: 85%;
  line-height: 1.08;
  margin: 0 0 .5em;
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(2.6rem, 6.4vw, 5.4rem); font-weight: 800; }
h2 { font-size: clamp(2rem, 3.8vw, 3.2rem); font-weight: 800; }
h3 { font-size: clamp(1.25rem, 1.8vw, 1.55rem); font-weight: 700; }

.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 200;
  background: var(--molten); color: var(--white); padding: 10px 16px;
  font-weight: 600; text-decoration: none; border-radius: var(--radius);
}
.skip-link:focus { top: 12px; }
:focus-visible { outline: 3px solid var(--molten-hot); outline-offset: 3px; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--molten);
  display: inline-flex; align-items: center; gap: 12px;
  margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 28px; height: 2px; background: currentColor; }
.lede { font-size: clamp(1.08rem, 1.5vw, 1.25rem); color: var(--ink-soft); max-width: 62ch; }
.muted { color: var(--ink-soft); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 52px; padding: 0 26px;
  font-family: var(--font-body); font-weight: 600; font-size: 1rem;
  text-decoration: none; border-radius: var(--radius);
  border: 2px solid transparent; cursor: pointer;
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease), transform .25s var(--ease), box-shadow .25s var(--ease);
}
.btn svg { width: 18px; height: 18px; transition: transform .25s var(--ease); }
.btn:hover svg { transform: translateX(3px); }
.btn-primary { background: var(--molten); color: var(--white); box-shadow: 0 10px 30px -12px var(--glow); }
.btn-primary:hover { background: var(--molten-deep); transform: translateY(-1px); }
.btn-ghost { border-color: rgba(255,255,255,.55); color: var(--white); background: transparent; }
.btn-ghost:hover { border-color: var(--white); background: rgba(255,255,255,.08); }
.btn-dark { background: var(--charcoal); color: var(--white); }
.btn-dark:hover { background: var(--graphite); }
.btn-outline { border-color: var(--steel-900); color: var(--ink); }
.btn-outline:hover { border-color: var(--molten); color: var(--molten-deep); }
.btn[disabled] { opacity: .6; cursor: progress; }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; }

.text-link {
  font-weight: 600; text-decoration: none; color: var(--molten-deep);
  display: inline-flex; align-items: center; gap: 8px;
  border-bottom: 2px solid transparent; transition: border-color .2s;
}
.text-link:hover { border-color: currentColor; }
.on-dark .text-link { color: var(--molten-hot); }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  height: var(--header-h);
  transition: background .35s var(--ease), box-shadow .35s var(--ease), height .35s var(--ease);
}
.site-header.is-solid, .site-header.always-solid {
  background: rgba(21, 23, 26, .96);
  box-shadow: 0 1px 0 rgba(255,255,255,.06);
  backdrop-filter: blur(8px);
}
.site-header .wrap { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--white); flex-shrink: 0; }
.brand-mark { width: 46px; height: auto; }
.brand-text { display: flex; flex-direction: column; gap: 4px; }
.brand-word { height: 17px; width: auto; }
.brand-sub { font-family: var(--font-mono); font-size: .62rem; letter-spacing: .28em; color: var(--steel-300); text-transform: uppercase; }

.nav-list { list-style: none; margin: 0; padding: 0; display: flex; align-items: center; gap: 4px; }
.nav-list a {
  display: block; padding: 10px 12px; color: var(--steel-100); text-decoration: none;
  font-size: .95rem; font-weight: 500; position: relative;
}
.nav-list a::after {
  content: ""; position: absolute; left: 12px; right: 12px; bottom: 4px; height: 2px;
  background: var(--molten); transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease);
}
.nav-list a:hover::after, .nav-list a[aria-current="page"]::after { transform: scaleX(1); }
.nav-list a[aria-current="page"] { color: var(--white); }
.nav-list .nav-cta a { background: var(--molten); color: var(--white); border-radius: var(--radius); padding: 10px 18px; margin-left: 10px; font-weight: 600; }
.nav-list .nav-cta a::after { display: none; }
.nav-list .nav-cta a:hover { background: var(--molten-deep); }

.nav-toggle {
  display: none; background: transparent; border: 0; color: var(--white); cursor: pointer;
  width: 48px; height: 48px; align-items: center; justify-content: center; margin-right: -10px;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  display: block; width: 24px; height: 2px; background: currentColor; position: relative; transition: transform .3s var(--ease), background .3s;
}
.nav-toggle span::before, .nav-toggle span::after { content: ""; position: absolute; left: 0; }
.nav-toggle span::before { top: -7px; } .nav-toggle span::after { top: 7px; }
.nav-open .nav-toggle span { background: transparent; }
.nav-open .nav-toggle span::before { transform: translateY(7px) rotate(45deg); }
.nav-open .nav-toggle span::after { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 1020px) {
  .nav-toggle { display: inline-flex; }
  .site-nav {
    position: fixed; inset: var(--header-h) 0 0 0; background: var(--charcoal);
    padding: 24px var(--gutter) 40px; overflow-y: auto;
    opacity: 0; visibility: hidden; transform: translateY(-8px);
    transition: opacity .3s var(--ease), transform .3s var(--ease), visibility .3s;
  }
  .nav-open .site-nav { opacity: 1; visibility: visible; transform: none; }
  .nav-open .site-header { background: var(--charcoal); }
  .nav-list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav-list a { font-family: var(--font-display); font-stretch: 85%; font-size: 1.6rem; font-weight: 700; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.08); }
  .nav-list a::after { left: 0; right: auto; width: 40px; bottom: 10px; }
  .nav-list .nav-cta a { margin: 24px 0 0; text-align: center; font-family: var(--font-body); font-size: 1.05rem; padding: 16px; border: 0; }
  body.nav-open { overflow: hidden; }
}

/* ---------- Photo frames & source badges ---------- */
.photo { position: relative; overflow: hidden; background: var(--graphite); margin: 0; }
.photo img { width: 100%; height: 100%; object-fit: cover; }
.photo .src-badge {
  position: absolute; left: 10px; bottom: 10px; z-index: 3;
  font-family: var(--font-mono); font-size: .64rem; letter-spacing: .08em; text-transform: uppercase;
  padding: 5px 8px; border-radius: 2px; pointer-events: none;
  background: rgba(10, 11, 13, .78); color: var(--steel-100); backdrop-filter: blur(4px);
}
.photo[data-source="company"] .src-badge { background: rgba(239,106,31,.92); color: var(--white); }
.photo.badge-top .src-badge { top: 10px; bottom: auto; }
.photo-placeholder {
  position: absolute; inset: 0; display: none; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
  text-align: center; padding: 20px; color: var(--steel-300);
  background:
    repeating-linear-gradient(135deg, rgba(255,255,255,.03) 0 12px, transparent 12px 24px),
    radial-gradient(120% 90% at 50% 110%, rgba(239,106,31,.28), transparent 60%),
    var(--graphite);
}
.photo-placeholder svg { width: 40px; height: 40px; color: var(--molten); opacity: .85; }
.photo-placeholder strong { font-family: var(--font-display); font-stretch: 85%; color: var(--white); font-size: 1.1rem; }
.photo-placeholder code { font-family: var(--font-mono); font-size: .72rem; color: var(--steel-300); word-break: break-all; }
.photo[data-source="none"] .photo-placeholder { display: flex; }
.photo[data-source="none"] img { visibility: hidden; }

/* ---------- Hero (home) ---------- */
.hero {
  position: relative; min-height: clamp(620px, 94svh, 920px); display: flex; align-items: flex-end;
  color: var(--white); background: var(--charcoal); isolation: isolate; overflow: hidden;
}
.hero > .photo { position: absolute; inset: 0; z-index: -2; background: var(--charcoal); }
.hero > .photo img { transform: scale(1.06); animation: heroZoom 18s var(--ease) forwards; }
@keyframes heroZoom { to { transform: scale(1); } }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(90deg, rgba(14,15,17,.92) 0%, rgba(14,15,17,.72) 45%, rgba(14,15,17,.25) 100%),
    linear-gradient(0deg, rgba(14,15,17,.95) 0%, rgba(14,15,17,0) 40%);
}
.hero .photo .src-badge { left: auto; right: 16px; bottom: auto; top: calc(var(--header-h) + 12px); }
.hero-inner { padding-top: calc(var(--header-h) + 60px); padding-bottom: 40px; width: 100%; }
.hero h1 { max-width: 13ch; margin-bottom: 26px; }
.hero h1 .line { display: block; }
.hero h1 .hot {
  background: linear-gradient(90deg, var(--molten-hot), var(--molten) 55%, #ffb36b);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .lede { color: var(--steel-100); margin-bottom: 34px; }
.hero-facts {
  margin-top: 64px; display: grid; grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(255,255,255,.14);
}
.hero-fact { padding: 22px 24px 4px 0; display: flex; gap: 14px; align-items: flex-start; }
.hero-fact + .hero-fact { padding-left: 24px; border-left: 1px solid rgba(255,255,255,.14); }
.hero-fact svg { flex: 0 0 26px; width: 26px; height: 26px; color: var(--molten-hot); margin-top: 3px; }
.hero-fact strong { display: block; font-family: var(--font-display); font-stretch: 85%; font-size: 1.2rem; }
.hero-fact span { color: var(--steel-300); font-size: .92rem; line-height: 1.45; display: block; }
@media (max-width: 760px) {
  .hero-facts { grid-template-columns: 1fr; margin-top: 44px; }
  .hero-fact + .hero-fact { padding-left: 0; border-left: 0; border-top: 1px solid rgba(255,255,255,.1); }
  .hero-fact { padding: 16px 0; }
  .hero .btn-row .btn { flex: 1 1 100%; }
}

/* molten line animation */
.molten-rule { height: 2px; width: 100%; background: linear-gradient(90deg, transparent, var(--molten), transparent); background-size: 200% 100%; animation: flow 6s linear infinite; opacity: .8; }
@keyframes flow { from { background-position: 100% 0; } to { background-position: -100% 0; } }

/* ---------- Inner page hero ---------- */
.page-hero {
  position: relative; color: var(--white); background: var(--charcoal); isolation: isolate; overflow: hidden;
  padding: calc(var(--header-h) + clamp(70px, 10vw, 130px)) 0 clamp(56px, 7vw, 90px);
}
.page-hero > .photo { position: absolute; inset: 0; z-index: -2; }
.page-hero::before { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(90deg, rgba(14,15,17,.94) 0%, rgba(14,15,17,.75) 55%, rgba(14,15,17,.45) 100%); }
.page-hero .photo .src-badge { left: auto; right: 16px; bottom: 16px; }
.page-hero h1 { font-size: clamp(2.4rem, 5.6vw, 4.6rem); max-width: 16ch; }
.page-hero .lede { color: var(--steel-100); }
.crumbs { font-family: var(--font-mono); font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; color: var(--steel-300); margin-bottom: 22px; }
.crumbs a { color: var(--steel-300); text-decoration: none; } .crumbs a:hover { color: var(--white); }
.crumbs span[aria-hidden] { margin: 0 8px; color: var(--molten); }

/* ---------- Sections ---------- */
.section { padding: clamp(72px, 10vw, 130px) 0; }
.section-tight { padding: clamp(56px, 7vw, 90px) 0; }
.section.dark, .band.dark { background: var(--charcoal); color: var(--steel-100); }
.section.dark h2, .section.dark h3 { color: var(--white); }
.section.dark .lede, .section.dark .muted { color: var(--steel-300); }
.section.steel { background: var(--steel-100); }
.section.white { background: var(--white); }
.section-head { max-width: 760px; margin-bottom: clamp(40px, 5vw, 64px); }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head.center .eyebrow { justify-content: center; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(36px, 6vw, 90px); align-items: center; }
.split.wide-media { grid-template-columns: 1.15fr .85fr; }
.split .photo { aspect-ratio: 4/5; border-radius: var(--radius); }
.split .photo.landscape { aspect-ratio: 4/3; }
@media (max-width: 900px) { .split, .split.wide-media { grid-template-columns: 1fr; } .split .photo { aspect-ratio: 4/3; } .split.reverse-mobile > :first-child { order: 2; } }

/* ---------- Feature grid ---------- */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; background: var(--steel-300); border: 2px solid var(--steel-300); }
.feature { background: var(--white); padding: clamp(28px, 3vw, 44px); position: relative; transition: background .3s; }
.feature::before { content: ""; position: absolute; top: -2px; left: 0; height: 3px; width: 0; background: var(--molten); transition: width .5s var(--ease); }
.feature:hover::before { width: 100%; }
.feature .num { font-family: var(--font-mono); font-size: .8rem; color: var(--molten-deep); letter-spacing: .1em; display: block; margin-bottom: 26px; }
.feature .ico { width: 44px; height: 44px; color: var(--molten); margin-bottom: 22px; }
.feature p { color: var(--ink-soft); margin: 0; }
.dark .features { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.1); }
.dark .feature { background: var(--charcoal-2); }
.dark .feature p { color: var(--steel-300); }
@media (max-width: 900px) { .features { grid-template-columns: 1fr; } }
.features.two { grid-template-columns: repeat(2, 1fr); }
.features.four { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1000px) { .features.four { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .features.two, .features.four { grid-template-columns: 1fr; } }

/* ---------- Preview cards ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 960px) { .cards { grid-template-columns: 1fr; } }
.card {
  position: relative; display: flex; flex-direction: column; min-height: 460px;
  color: var(--white); text-decoration: none; border-radius: var(--radius); overflow: hidden; isolation: isolate;
  background: var(--graphite);
}
.card .photo { position: absolute; inset: 0; z-index: -2; }
.card .photo img { transition: transform .9s var(--ease); }
.card:hover .photo img { transform: scale(1.06); }
.card::before { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, rgba(14,15,17,.15) 0%, rgba(14,15,17,.92) 75%); }
.card .photo .src-badge { top: 12px; bottom: auto; left: 12px; }
.card-body { margin-top: auto; padding: 30px; }
.card-kicker { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: var(--molten-hot); }
.card h3 { font-size: 1.9rem; margin: 10px 0 10px; }
.card p { color: var(--steel-300); margin-bottom: 18px; }
.card .go { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; }
.card .go svg { width: 18px; height: 18px; transition: transform .3s var(--ease); }
.card:hover .go svg { transform: translateX(5px); }
@media (max-width: 960px) { .card { min-height: 380px; } }

/* ---------- Big statement / stat ---------- */
.statement { font-family: var(--font-display); font-stretch: 85%; font-weight: 700; font-size: clamp(1.7rem, 3.4vw, 2.8rem); line-height: 1.15; max-width: 24ch; }
.statement em { font-style: normal; color: var(--molten); }
.stat-block { border-left: 3px solid var(--molten); padding: 6px 0 6px 24px; }
.stat-block .big { font-family: var(--font-display); font-stretch: 80%; font-weight: 800; font-size: clamp(3.4rem, 8vw, 6.4rem); line-height: .95; color: var(--white); display: block; }
.stat-block .big small { font-size: .38em; font-weight: 700; color: var(--molten-hot); margin-left: 6px; }
.stat-block .cap { color: var(--steel-300); font-size: .98rem; display: block; margin-top: 10px; max-width: 34ch; }
.section:not(.dark) .stat-block .big { color: var(--ink); }
.section:not(.dark) .stat-block .cap { color: var(--ink-soft); }

/* ---------- Checklist ---------- */
.checklist { list-style: none; margin: 0 0 28px; padding: 0; display: grid; gap: 14px; }
.checklist li { display: flex; gap: 14px; align-items: flex-start; }
.checklist li::before {
  content: ""; flex: 0 0 22px; height: 22px; margin-top: 3px; border-radius: 50%;
  background: var(--molten) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center/14px no-repeat;
}
.checklist strong { display: block; }
.checklist span { color: var(--ink-soft); }
.dark .checklist span { color: var(--steel-300); }

/* ---------- Supply chain flow ---------- */
.chain { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: c; }
.chain-node { position: relative; padding: 28px 26px 28px 0; }
.chain-node + .chain-node { padding-left: 26px; }
.chain-node::after {
  content: ""; position: absolute; top: 46px; right: -9px; width: 18px; height: 18px; z-index: 2;
  border-top: 2px solid var(--steel-500); border-right: 2px solid var(--steel-500); transform: rotate(45deg);
}
.chain-node:last-child::after { display: none; }
.chain-node .dot { display: inline-flex; width: 54px; height: 54px; border-radius: 50%; align-items: center; justify-content: center; background: var(--white); border: 2px solid var(--steel-300); margin-bottom: 20px; }
.chain-node .dot svg { width: 26px; height: 26px; color: var(--steel-700); }
.chain-node.us .dot { background: var(--molten); border-color: var(--molten); box-shadow: 0 0 0 8px rgba(239,106,31,.15); }
.chain-node.us .dot svg { color: var(--white); }
.chain-node.us h3 { color: var(--molten-deep); }
.chain-node p { color: var(--ink-soft); font-size: .96rem; margin: 0; }
.chain-node + .chain-node { border-left: 1px solid var(--steel-300); }
@media (max-width: 900px) {
  .chain { grid-template-columns: 1fr; }
  .chain-node, .chain-node + .chain-node { padding: 0 0 34px 76px; border-left: 0; }
  .chain-node .dot { position: absolute; left: 0; top: 0; }
  .chain-node::before { content: ""; position: absolute; left: 26px; top: 56px; bottom: 0; width: 2px; background: var(--steel-300); }
  .chain-node:last-child::before { display: none; }
  .chain-node::after { display: none; }
}

/* ---------- Process (manufacturing) ---------- */
.process { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; position: relative; }
.process::before { content: ""; position: absolute; top: 37px; left: 37px; right: 10%; height: 2px; background: rgba(255,255,255,.12); }
.process::after {
  content: ""; position: absolute; top: 37px; left: 37px; height: 2px; width: 0; background: linear-gradient(90deg, var(--molten), var(--molten-hot));
  box-shadow: 0 0 12px var(--molten); transition: width 2.2s var(--ease);
}
.process.in-view::after { width: calc(90% - 37px); }
.step { position: relative; padding-right: 22px; }
.step .node {
  width: 76px; height: 76px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  background: var(--charcoal-2); border: 2px solid rgba(255,255,255,.16); position: relative; z-index: 1; margin-bottom: 26px;
  transition: border-color .5s, box-shadow .5s;
}
.step .node svg { width: 32px; height: 32px; color: var(--molten-hot); }
.process.in-view .step .node { border-color: var(--molten); box-shadow: 0 0 0 6px rgba(239,106,31,.12); }
.process.in-view .step:nth-child(2) .node { transition-delay: .4s; }
.process.in-view .step:nth-child(3) .node { transition-delay: .8s; }
.process.in-view .step:nth-child(4) .node { transition-delay: 1.2s; }
.process.in-view .step:nth-child(5) .node { transition-delay: 1.6s; }
.step .n { font-family: var(--font-mono); font-size: .76rem; letter-spacing: .14em; color: var(--molten-hot); display: block; margin-bottom: 8px; }
.step h3 { color: var(--white); font-size: 1.35rem; }
.step p { color: var(--steel-300); font-size: .95rem; margin: 0; }
@media (max-width: 1000px) {
  .process { grid-template-columns: 1fr; }
  .process::before { top: 0; bottom: 0; left: 37px; right: auto; width: 2px; height: auto; }
  .process::after { top: 0; left: 37px; width: 2px; height: 0; transition: height 2.2s var(--ease); }
  .process.in-view::after { width: 2px; height: calc(100% - 76px); }
  .step { padding: 0 0 40px 104px; min-height: 76px; }
  .step .node { position: absolute; left: 0; top: 0; margin: 0; }
  .step:last-child { padding-bottom: 0; }
}

.detail-steps { display: grid; gap: 2px; background: var(--steel-300); border: 2px solid var(--steel-300); }
.detail-step { display: grid; grid-template-columns: 120px 1fr 1.2fr; gap: 32px; background: var(--white); padding: clamp(26px, 3vw, 40px); align-items: start; }
.detail-step .n { font-family: var(--font-display); font-stretch: 80%; font-weight: 800; font-size: 3.6rem; line-height: 1; color: var(--steel-300); }
.detail-step h3 { margin-bottom: 6px; }
.detail-step .tag { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--molten-deep); }
.detail-step p { color: var(--ink-soft); margin: 0; }
.detail-step p + p { margin-top: .8em; }
@media (max-width: 860px) { .detail-step { grid-template-columns: 1fr; gap: 10px; } .detail-step .n { font-size: 2.6rem; } }

/* Furnace callout */
.furnace-callout { display: grid; grid-template-columns: auto 1fr; gap: 28px; align-items: center; padding: 30px; border: 1px solid rgba(255,255,255,.14); border-radius: var(--radius); background: linear-gradient(135deg, rgba(239,106,31,.12), rgba(255,255,255,0) 60%); }
.furnace-callout .big { font-family: var(--font-display); font-stretch: 80%; font-weight: 800; font-size: clamp(3.6rem, 7vw, 5.4rem); line-height: .9; color: var(--white); }
.furnace-callout .big small { display: block; font-size: .3em; letter-spacing: .14em; text-transform: uppercase; color: var(--molten-hot); font-family: var(--font-mono); font-weight: 500; margin-top: 8px; }
.furnace-callout p { margin: 0; color: var(--steel-300); }
@media (max-width: 600px) { .furnace-callout { grid-template-columns: 1fr; } }

/* ---------- Ingot illustration ---------- */
.ingot-visual { position: relative; aspect-ratio: 1/1; border-radius: var(--radius); background: radial-gradient(80% 70% at 50% 100%, rgba(239,106,31,.22), transparent 70%), var(--charcoal); display: flex; align-items: center; justify-content: center; overflow: hidden; }
.ingot-visual svg { width: 78%; height: auto; }
.ingot-visual .cap { position: absolute; left: 16px; bottom: 14px; font-family: var(--font-mono); font-size: .66rem; letter-spacing: .1em; text-transform: uppercase; color: var(--steel-500); }

/* ---------- Spec request grid ---------- */
.ask-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.ask { padding: 28px 24px; border: 1px solid var(--steel-300); background: var(--white); border-radius: var(--radius); }
.ask svg { width: 32px; height: 32px; color: var(--molten); margin-bottom: 18px; }
.ask h3 { font-size: 1.25rem; }
.ask p { color: var(--ink-soft); font-size: .95rem; margin: 0; }
@media (max-width: 960px) { .ask-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .ask-grid { grid-template-columns: 1fr; } }

/* ---------- Note / honesty box ---------- */
.note-box { border: 1px solid var(--steel-300); border-left: 4px solid var(--steel-700); background: var(--white); padding: 24px 28px; border-radius: var(--radius); }
.note-box h3 { font-size: 1.15rem; margin-bottom: 8px; }
.note-box p { margin: 0; color: var(--ink-soft); }
.dark .note-box { background: var(--charcoal-2); border-color: rgba(255,255,255,.12); border-left-color: var(--molten); }
.dark .note-box p { color: var(--steel-300); }

/* Preview-only notes (hidden when previewMode = false) */
.preview-note { display: none; }
html.is-preview .preview-note {
  display: block; margin: 20px 0; padding: 14px 16px; border: 1px dashed var(--molten); border-radius: var(--radius);
  background: rgba(239,106,31,.07); color: var(--molten-deep); font-family: var(--font-mono); font-size: .8rem; line-height: 1.55;
}
.dark .preview-note, .page-hero .preview-note { color: var(--molten-hot) !important; }
html.is-preview .preview-note::before { content: "PREVIEW NOTE — "; font-weight: 600; }

/* ---------- CTA band ---------- */
.cta-band { position: relative; overflow: hidden; background: var(--charcoal); color: var(--white); padding: clamp(70px, 9vw, 120px) 0; isolation: isolate; }
.cta-band::before { content: ""; position: absolute; inset: auto -10% -60% -10%; height: 120%; z-index: -1; background: radial-gradient(50% 50% at 50% 50%, rgba(239,106,31,.35), transparent 70%); animation: breathe 7s ease-in-out infinite; }
@keyframes breathe { 0%,100% { opacity: .65; transform: scale(1); } 50% { opacity: 1; transform: scale(1.05); } }
.cta-band .wrap { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.cta-band h2 { max-width: 18ch; margin: 0; }
.cta-band p { color: var(--steel-300); max-width: 52ch; margin: 16px 0 0; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(36px, 6vw, 80px); align-items: start; }
@media (max-width: 960px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-list { list-style: none; margin: 0 0 30px; padding: 0; border-top: 1px solid var(--steel-300); }
.contact-list li { display: grid; grid-template-columns: 44px 1fr; gap: 14px; padding: 20px 0; border-bottom: 1px solid var(--steel-300); align-items: start; }
.contact-list .ci { width: 44px; height: 44px; border-radius: 50%; background: var(--charcoal); display: flex; align-items: center; justify-content: center; }
.contact-list .ci svg { width: 20px; height: 20px; color: var(--molten-hot); }
.contact-list .label { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--steel-700); display: block; }
.contact-list a, .contact-list .val { font-weight: 600; font-size: 1.08rem; text-decoration: none; color: var(--ink); word-break: break-word; }
.contact-list a:hover { color: var(--molten-deep); }
.contact-list .missing { font-family: var(--font-mono); font-size: .78rem; color: var(--molten-deep); background: rgba(239,106,31,.08); border: 1px dashed var(--molten); padding: 3px 8px; border-radius: 3px; display: inline-block; margin-top: 4px; font-weight: 500; }
.quick-actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 30px; }
.quick-actions .btn { min-height: 56px; padding: 0 12px; font-size: .95rem; }
@media (max-width: 480px) { .quick-actions { grid-template-columns: 1fr; } }

.form-card { background: var(--white); border: 1px solid var(--steel-300); border-top: 4px solid var(--molten); border-radius: var(--radius); padding: clamp(24px, 4vw, 44px); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 20px; }
.form-grid .full { grid-column: 1 / -1; }
@media (max-width: 620px) { .form-grid { grid-template-columns: 1fr; } }
.field label { display: block; font-weight: 600; font-size: .92rem; margin-bottom: 7px; }
.field label .req { color: var(--molten-deep); }
.field label .opt { color: var(--steel-700); font-weight: 400; font-size: .85rem; }
.field input, .field select, .field textarea {
  width: 100%; min-height: 52px; padding: 12px 14px; font: 400 1rem var(--font-body); color: var(--ink);
  background: var(--paper); border: 1px solid var(--steel-300); border-radius: var(--radius); transition: border-color .2s, box-shadow .2s, background .2s;
  appearance: none; -webkit-appearance: none;
}
.field select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235b636d' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; background-size: 18px; padding-right: 40px; }
.field textarea { min-height: 150px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--molten); background: var(--white); box-shadow: 0 0 0 3px rgba(239,106,31,.18); }
.field .err { display: none; color: #b3261e; font-size: .85rem; margin-top: 6px; }
.field.invalid input, .field.invalid select, .field.invalid textarea { border-color: #b3261e; }
.field.invalid .err { display: block; }
.hp { position: absolute !important; left: -10000px !important; width: 1px; height: 1px; overflow: hidden; }
.form-foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; margin-top: 24px; }
.form-foot small { color: var(--ink-soft); max-width: 40ch; }
.form-status { margin-top: 20px; padding: 16px 18px; border-radius: var(--radius); display: none; font-size: .96rem; }
.form-status.show { display: block; }
.form-status.ok { background: #eaf6ec; border: 1px solid #a6d5ae; color: #1d5b2a; }
.form-status.fail { background: #fdf0ee; border: 1px solid #f0b8b0; color: #8a2a1e; }
.form-status.info { background: rgba(239,106,31,.07); border: 1px dashed var(--molten); color: var(--molten-deep); }
.spinner { width: 18px; height: 18px; border: 2px solid rgba(255,255,255,.4); border-top-color: #fff; border-radius: 50%; animation: spin .8s linear infinite; display: none; }
.is-sending .spinner { display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Footer ---------- */
.site-footer { background: #0f1113; color: var(--steel-300); padding: 80px 0 30px; font-size: .95rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.1fr; gap: 40px; }
@media (max-width: 960px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }
.site-footer h2 { font-family: var(--font-mono); font-stretch: 100%; font-size: .74rem; letter-spacing: .16em; text-transform: uppercase; color: var(--steel-500); font-weight: 500; margin-bottom: 18px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.site-footer a { color: var(--steel-100); text-decoration: none; }
.site-footer a:hover { color: var(--molten-hot); }
.footer-brand img.mark { width: 56px; margin-bottom: 16px; }
.footer-brand img.word { height: 20px; width: auto; margin-bottom: 10px; }
.footer-brand .legal { color: var(--white); font-weight: 600; margin-bottom: 6px; }
.footer-brand p { margin-bottom: 8px; max-width: 34ch; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; }
.footer-contact .pending { color: var(--steel-500); font-style: italic; }
.footer-base { margin-top: 60px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.08); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 14px; font-size: .84rem; color: var(--steel-500); }
.footer-base a { color: var(--steel-300); }

/* ---------- Preview banner ---------- */
.preview-banner {
  position: fixed; right: 16px; bottom: 16px; z-index: 250; width: min(380px, calc(100vw - 32px));
  background: var(--white); color: var(--ink); border: 1px solid var(--steel-300); border-top: 4px solid var(--molten);
  border-radius: var(--radius); box-shadow: 0 20px 60px -20px rgba(0,0,0,.45); font-size: .88rem;
}
.preview-banner summary { cursor: pointer; padding: 12px 16px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 10px; align-items: center; }
.preview-banner summary::-webkit-details-marker { display: none; }
.preview-banner summary .pill { font-family: var(--font-mono); font-size: .7rem; background: var(--molten); color: #fff; padding: 2px 8px; border-radius: 999px; }
.preview-banner .pb-body { padding: 0 16px 14px; max-height: 50vh; overflow: auto; }
.preview-banner ul { margin: 0; padding-left: 18px; }
.preview-banner li { margin: 4px 0; color: var(--ink-soft); }
.preview-banner .pb-foot { margin-top: 10px; font-size: .78rem; color: var(--steel-700); }

/* ---------- Reveal animation ---------- */
.reveal { transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.pre { opacity: 0; transform: translateY(24px); }
.reveal.in-view { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .1s; } .reveal.d2 { transition-delay: .2s; } .reveal.d3 { transition-delay: .3s; }
.no-js .reveal { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
  .hero > .photo img { transform: none; }
}

/* utility */
.mt-0 { margin-top: 0; } .mb-0 { margin-bottom: 0; } .mt-l { margin-top: 40px; }
.center { text-align: center; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* In the launch build, empty photo slots show only a neutral texture — no "to be added" text */
html:not(.is-preview) .photo-placeholder strong,
html:not(.is-preview) .photo-placeholder code,
html:not(.is-preview) .photo-placeholder svg { display: none; }
.text-link svg { width: 18px; height: 18px; flex: 0 0 18px; transition: transform .25s var(--ease); }
.text-link:hover svg { transform: translateX(3px); }
.card .photo-placeholder, .hero .photo-placeholder, .page-hero .photo-placeholder { justify-content: flex-start; padding-top: 22%; }
/* keep the fixed header clear of a phone's status bar */
.site-header { padding-top: env(safe-area-inset-top, 0px); height: calc(var(--header-h) + env(safe-area-inset-top, 0px)); }

/* =========================================================
   Scrap-buying redesign
   ========================================================= */
.hero .photo-placeholder, .page-hero .photo-placeholder { display: none !important; }
.hero > .photo[data-source="none"], .page-hero > .photo[data-source="none"] { background: transparent; }
.hero { background: radial-gradient(90% 70% at 85% 110%, rgba(239,106,31,.32), transparent 60%), radial-gradient(60% 50% at 10% 120%, rgba(196,80,26,.25), transparent 70%), var(--charcoal); }
.hero canvas.sparks { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; pointer-events: none; }
.hero h1 { max-width: 15ch; }
.page-hero.plain { background: radial-gradient(70% 90% at 90% 120%, rgba(239,106,31,.28), transparent 65%), var(--charcoal); }
.page-hero.compact { padding-bottom: clamp(40px, 5vw, 64px); }

/* WhatsApp buttons use WhatsApp's own green so suppliers recognise them */
.btn-wa { background: #1f9e52; color: #fff; box-shadow: 0 10px 30px -14px rgba(31,158,82,.6); }
.btn-wa:hover { background: #17843f; transform: translateY(-1px); }
.btn-wa svg { width: 20px; height: 20px; }
.btn-wa:hover svg { transform: none; }

/* grade chips in hero */
.hero-grades { margin-top: 44px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.14); }
.hero-grades .label { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--steel-500); margin: 0 0 12px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0; }
.chips li { font-family: var(--font-mono); font-size: .8rem; padding: 7px 12px; border: 1px solid rgba(255,255,255,.2); border-radius: 999px; color: var(--steel-100); background: rgba(255,255,255,.04); }
.chips li.main { border-color: rgba(255,138,43,.65); color: #ffd7b8; background: rgba(239,106,31,.1); }

/* grade cards */
.grade-group + .grade-group { margin-top: clamp(56px, 7vw, 88px); }
.grade-head { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(24px, 4vw, 60px); align-items: end; margin-bottom: 28px; }
.grade-head h2 { margin-bottom: 10px; }
.grade-head p { margin: 0; color: var(--ink-soft); }
.tag-pill { display: inline-block; font-family: var(--font-mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; padding: 5px 10px; border-radius: 999px; background: var(--molten); color: #fff; margin-bottom: 14px; }
.grade-media { display: grid; grid-template-columns: .9fr 1.1fr; gap: 20px; align-items: stretch; }
.grade-media > .photo { border-radius: var(--radius); min-height: 280px; }
.grades { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 10px; align-content: start; }
.grade {
  display: flex; flex-direction: column; justify-content: space-between; gap: 22px; min-height: 132px; padding: 18px;
  background: var(--white); border: 1px solid var(--steel-300); border-radius: var(--radius); text-decoration: none; color: var(--ink);
  transition: border-color .25s var(--ease), transform .25s var(--ease), box-shadow .25s var(--ease);
}
.grade:hover, .grade:focus-visible { border-color: var(--molten); transform: translateY(-2px); box-shadow: 0 14px 30px -18px rgba(0,0,0,.35); }
.grade .g-ico { width: 30px; height: 30px; color: var(--molten); }
.grade .g-name { font-family: var(--font-display); font-stretch: 85%; font-weight: 700; font-size: 1.3rem; line-height: 1.1; display: block; }
.grade .g-act { font-size: .86rem; font-weight: 600; color: var(--molten-deep); display: inline-flex; align-items: center; gap: 6px; }
.grade .g-act svg { width: 15px; height: 15px; transition: transform .25s var(--ease); }
.grade:hover .g-act svg { transform: translateX(3px); }
.grade.other { background: transparent; border-style: dashed; }
@media (max-width: 900px) { .grade-head, .grade-media { grid-template-columns: 1fr; } .grade-media > .photo { min-height: 220px; aspect-ratio: 16/9; } }
@media (max-width: 420px) { .grades { grid-template-columns: 1fr 1fr; } .grade { min-height: 118px; padding: 14px; } .grade .g-name { font-size: 1.12rem; } }

/* do / keep-out guide */
.qa-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.qa-col { padding: clamp(24px, 3vw, 36px); border-radius: var(--radius); background: var(--white); border: 1px solid var(--steel-300); }
.qa-col h3 { margin-bottom: 18px; }
.qa-col.keep-out { background: var(--charcoal); border-color: var(--charcoal); color: var(--steel-100); }
.qa-col.keep-out h3 { color: var(--white); }
.qa-col .checklist { margin: 0; }
.xlist { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.xlist li { display: flex; gap: 14px; align-items: flex-start; }
.xlist li::before {
  content: ""; flex: 0 0 22px; height: 22px; margin-top: 3px; border-radius: 50%; border: 1.5px solid var(--molten-hot);
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ff8a2b' stroke-width='3' stroke-linecap='round'%3E%3Cpath d='M7 7l10 10M17 7L7 17'/%3E%3C/svg%3E") center/12px no-repeat;
}
.xlist strong { display: block; color: var(--white); }
.xlist span { color: var(--steel-300); }
@media (max-width: 800px) { .qa-cols { grid-template-columns: 1fr; } }

/* reasons */
.reasons { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2px; background: rgba(255,255,255,.1); border: 2px solid rgba(255,255,255,.1); }
.reason { background: var(--charcoal-2); padding: clamp(24px, 3vw, 36px); }
.reason svg { width: 36px; height: 36px; color: var(--molten-hot); margin-bottom: 20px; }
.reason h3 { color: var(--white); font-size: 1.3rem; }
.reason p { color: var(--steel-300); margin: 0; font-size: .97rem; }
@media (max-width: 1000px) { .reasons { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .reasons { grid-template-columns: 1fr; } }

/* FAQ */
.faq { border-top: 1px solid var(--steel-300); max-width: 880px; }
.faq details { border-bottom: 1px solid var(--steel-300); }
.faq summary { cursor: pointer; list-style: none; padding: 22px 44px 22px 0; font-weight: 600; font-size: 1.08rem; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; position: absolute; right: 8px; top: 50%; width: 11px; height: 11px; border-right: 2px solid var(--molten); border-bottom: 2px solid var(--molten); transform: translateY(-70%) rotate(45deg); transition: transform .25s var(--ease); }
.faq details[open] summary::after { transform: translateY(-25%) rotate(225deg); }
.faq details p { color: var(--ink-soft); margin: 0; padding-bottom: 22px; max-width: 70ch; }

/* six-step process on supply page */
.detail-step .ico-n { display: flex; align-items: center; gap: 14px; }
.detail-step .ico-n svg { width: 30px; height: 30px; color: var(--molten); }

/* contact form extras */
.qty-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.form-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.form-status a { font-weight: 700; color: inherit; }
.wa-panel { margin-bottom: 28px; padding: 22px; border-radius: var(--radius); background: var(--charcoal); color: var(--steel-100); display: grid; gap: 14px; }
.wa-panel p { margin: 0; color: var(--steel-300); }
.wa-panel strong { color: var(--white); font-family: var(--font-display); font-stretch: 85%; font-size: 1.3rem; }

/* sticky WhatsApp / call bar on phones */
.action-bar { display: none; }
@media (max-width: 760px) {
  .action-bar:not([hidden]) {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 90; display: grid; grid-template-columns: 1fr 1fr; gap: 8px;
    padding: 10px max(12px, env(safe-area-inset-right, 0px)) calc(10px + env(safe-area-inset-bottom, 0px)) max(12px, env(safe-area-inset-left, 0px));
    background: rgba(15,17,19,.96); border-top: 1px solid rgba(255,255,255,.08); backdrop-filter: blur(8px);
  }
  .action-bar .btn { min-height: 50px; padding: 0 12px; font-size: .98rem; }
  body.has-bar { padding-bottom: calc(74px + env(safe-area-inset-bottom, 0px)); }
  body.has-bar .preview-banner { bottom: calc(84px + env(safe-area-inset-bottom, 0px)); }
}
[hidden] { display: none !important; }
.grade-media > div:first-child { display: flex; }
.grade-media > div:first-child > .photo { flex: 1; min-height: 280px; border-radius: var(--radius); }
@media (max-width: 900px) { .grade-media > div:first-child > .photo { min-height: 0; aspect-ratio: 16/9; } }
.grades.two { grid-template-columns: 1fr 1fr; align-content: stretch; }
.grades.two .grade { min-height: 180px; padding: 24px; }
.grades.two .grade .g-name { font-size: clamp(1.4rem, 2.4vw, 1.9rem); }
.grades.two .grade .g-ico { width: 40px; height: 40px; }
@media (max-width: 420px) { .grades.two .grade { min-height: 150px; padding: 16px; } }
.grade .g-note { display: block; margin-top: 8px; font-size: .88rem; line-height: 1.4; color: var(--ink-soft); }
/* supplier form: mode switch + grade checkboxes */
.mode-switch { border: 0; padding: 0; margin: 0 0 24px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.mode-switch legend { font-weight: 600; font-size: .92rem; margin-bottom: 8px; padding: 0; }
.mode-switch label { position: relative; display: block; cursor: pointer; }
.mode-switch input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.mode-switch span { display: block; height: 100%; padding: 14px 16px; border: 1.5px solid var(--steel-300); border-radius: var(--radius); background: var(--paper); transition: border-color .2s, background .2s, box-shadow .2s; }
.mode-switch strong { display: block; font-size: 1rem; }
.mode-switch small { display: block; color: var(--ink-soft); font-size: .86rem; margin-top: 2px; }
.mode-switch input:checked + span { border-color: var(--molten); background: var(--white); box-shadow: 0 0 0 3px rgba(239,106,31,.15); }
.mode-switch input:focus-visible + span { outline: 3px solid var(--molten-hot); outline-offset: 2px; }
@media (max-width: 480px) { .mode-switch { grid-template-columns: 1fr; } }
.field .lbl { display: block; font-weight: 600; font-size: .92rem; margin-bottom: 7px; }
.check-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.check { display: flex; align-items: center; gap: 10px; min-height: 48px; padding: 0 14px; border: 1px solid var(--steel-300); border-radius: var(--radius); background: var(--paper); cursor: pointer; font-weight: 500; }
.check input { width: 18px; height: 18px; accent-color: var(--molten); margin: 0; }
.check:has(input:checked) { border-color: var(--molten); background: var(--white); }
.field.invalid .check-grid .check { border-color: #b3261e; }
@media (max-width: 420px) { .check-grid { grid-template-columns: 1fr; } }
.field .check input { width: 18px; height: 18px; min-height: 0; flex: 0 0 18px; padding: 0; border: 0; background: none; box-shadow: none; appearance: auto; -webkit-appearance: checkbox; accent-color: var(--molten); }
.field .check { display: flex; align-items: center; gap: 10px; margin: 0; font-weight: 500; font-size: 1rem; }
/* three-way contact switch */
.mode-switch { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 620px) { .mode-switch { grid-template-columns: 1fr; } }
/* supplier area on plant-first pages */
.supplier-band { background: radial-gradient(70% 90% at 100% 0%, rgba(239,106,31,.22), transparent 60%), var(--graphite); color: var(--steel-100); border-top: 3px solid var(--molten); }
.supplier-band h2 { color: var(--white); }
.supplier-band .lede { color: var(--steel-300); }
.supplier-band .chips li small { color: var(--steel-300); font-size: .9em; }
.sup-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: clamp(32px, 6vw, 80px); align-items: center; }
.mini-steps { display: grid; gap: 2px; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius); overflow: hidden; }
.mini-step { display: grid; grid-template-columns: 44px 1fr; gap: 16px; align-items: start; padding: 22px; background: var(--charcoal-2); }
.mini-step svg { width: 32px; height: 32px; color: var(--molten-hot); }
.mini-step strong { display: block; color: var(--white); font-family: var(--font-display); font-stretch: 85%; font-size: 1.25rem; }
.mini-step span { color: var(--steel-300); font-size: .95rem; }
@media (max-width: 900px) { .sup-grid { grid-template-columns: 1fr; } }
/* in-page links on the supplier page */
.subnav { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.subnav a { font-family: var(--font-mono); font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; color: var(--steel-100); text-decoration: none; padding: 8px 14px; border: 1px solid rgba(255,255,255,.22); border-radius: 999px; }
.subnav a:hover { border-color: var(--molten-hot); color: var(--white); }
.section[id] { scroll-margin-top: calc(var(--header-h) + 12px); }