@font-face {
  font-family: "Roboto";
  src: url("assets/fonts/roboto-500.ttf") format("truetype");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: "Roboto";
  src: url("assets/fonts/roboto-700.ttf") format("truetype");
  font-style: normal;
  font-weight: 700;
  font-display: swap;
}

@font-face {
  font-family: "Roboto";
  src: url("assets/fonts/roboto-900.ttf") format("truetype");
  font-style: normal;
  font-weight: 900;
  font-display: swap;
}

:root {
  --ink: #111513;
  --ink-soft: #1a1f1c;
  --steel: #2d3430;
  --muted: #70766f;
  --paper: #e9e8e1;
  --paper-deep: #d8d7cf;
  --line: rgba(17, 21, 19, 0.18);
  --line-dark: rgba(233, 232, 225, 0.18);
  --accent: #d66e32;
  --accent-bright: #e07a3d;
  --white: #f6f4ec;
  --display: "Roboto", "Helvetica Neue", Arial, sans-serif;
  --body: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --shell: min(92vw, 86rem);
  --header-h: 5.25rem;
  --z-header: 30;
  --z-menu: 20;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 50;
  opacity: 0.045;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.85'/%3E%3C/svg%3E");
}

body.menu-open { overflow: hidden; }

a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
img { display: block; max-width: 100%; }

:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 4px;
}

::selection { color: var(--ink); background: var(--accent-bright); }

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 60;
  padding: .75rem 1rem;
  color: var(--white);
  background: var(--accent);
  transition: top .2s ease;
}

.skip-link:focus { top: 1rem; }
.page-shell { width: var(--shell); margin-inline: auto; }

.eyebrow {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin: 0;
  color: rgba(246, 244, 236, .7);
  font-family: var(--mono);
  font-size: .73rem;
  line-height: 1;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.eyebrow span { width: 1.75rem; height: 1px; background: currentColor; }
.eyebrow--dark { color: var(--muted); }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: var(--z-header);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: stretch;
  min-height: var(--header-h);
  color: var(--white);
  border-bottom: 1px solid var(--line-dark);
  background: rgba(17, 21, 19, .44);
  backdrop-filter: blur(14px);
  transition: background .25s ease, min-height .25s ease;
}

.site-header.is-scrolled { background: rgba(17, 21, 19, .94); min-height: 4.5rem; }

.brand {
  display: flex;
  align-items: center;
  gap: .85rem;
  padding-inline: clamp(1rem, 3vw, 3rem);
  border-right: 1px solid var(--line-dark);
}

.brand__mark { position: relative; display: grid; gap: 3px; width: 2.25rem; }
.brand__mark i { display: block; height: 5px; background: var(--accent); transform: skewX(-22deg); }
.brand__mark i:nth-child(2) { width: 75%; }
.brand__mark i:nth-child(3) { width: 50%; }
.brand__copy { display: grid; line-height: 1.05; }
.brand__copy b { font-family: var(--display); font-size: .95rem; letter-spacing: .055em; text-transform: uppercase; }
.brand__copy small { margin-top: .35rem; color: rgba(246, 244, 236, .52); font-family: var(--mono); font-size: .55rem; letter-spacing: .06em; }

.main-nav { display: flex; align-items: stretch; justify-content: center; }
.main-nav a { display: grid; place-items: center; padding-inline: clamp(.8rem, 1.65vw, 1.6rem); color: rgba(246, 244, 236, .72); font-size: .78rem; font-weight: 600; letter-spacing: .02em; border-left: 1px solid transparent; border-right: 1px solid transparent; transition: color .2s ease, background .2s ease, border-color .2s ease; }
.main-nav a:hover, .main-nav a[aria-current="true"] { color: var(--white); background: rgba(255,255,255,.04); border-color: var(--line-dark); }

.header-phone { display: grid; align-content: center; justify-items: end; min-width: 14.5rem; padding-inline: clamp(1rem, 3vw, 3rem); border-left: 1px solid var(--line-dark); }
.header-phone span { color: rgba(246, 244, 236, .52); font-family: var(--mono); font-size: .58rem; letter-spacing: .14em; text-transform: uppercase; }
.header-phone strong { margin-top: .18rem; font-family: var(--mono); font-size: .9rem; font-weight: 500; font-variant-numeric: tabular-nums; }

.menu-toggle { display: none; }

.hero {
  position: relative;
  display: grid;
  align-items: center;
  min-height: 58rem;
  color: var(--white);
  background: var(--ink);
  overflow: hidden;
}

.hero__image, .hero__shade, .hero__grid { position: absolute; inset: 0; }
.hero__image { background: var(--ink) url("assets/transformer-steel-hero.jpg") center / cover no-repeat; transform: scale(1.015); animation: heroIn 1.4s cubic-bezier(.2,.7,.2,1) both; }
.hero__shade { background: radial-gradient(circle at 78% 48%, transparent 0 22%, rgba(17,21,19,.16) 55%), linear-gradient(90deg, rgba(17,21,19,.98) 0%, rgba(17,21,19,.9) 35%, rgba(17,21,19,.18) 69%, rgba(17,21,19,.14) 100%), linear-gradient(0deg, rgba(17,21,19,.6), transparent 35%); }
.hero__grid { opacity: .24; background-image: linear-gradient(to right, transparent calc(100% - 1px), rgba(255,255,255,.18) 1px); background-size: calc(100% / 6) 100%; }

.hero__content { position: relative; z-index: 2; padding-top: 6.25rem; transform: translateY(-2.5rem); }
.hero h1 {
  max-width: 58rem;
  margin: 1.7rem 0 1.55rem;
  font-family: var(--display);
  font-weight: 900;
  font-size: clamp(4.35rem, 7.7vw, 8.8rem);
  font-stretch: condensed;
  line-height: .79;
  letter-spacing: -.075em;
  text-transform: uppercase;
  text-wrap: balance;
}

.hero h1 em { color: var(--accent); font-style: normal; }
.hero__lead { max-width: 37rem; margin: 0; color: rgba(246,244,236,.72); font-size: clamp(1rem, 1.25vw, 1.16rem); line-height: 1.6; text-wrap: pretty; }
.hero__actions { display: flex; align-items: center; gap: 2.25rem; margin-top: 2.25rem; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 2.2rem;
  min-height: 3.65rem;
  padding: .85rem 1.15rem .85rem 1.4rem;
  border: 0;
  border-radius: 1px;
  cursor: pointer;
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .055em;
  text-transform: uppercase;
  transition: transform .22s ease, background .22s ease, color .22s ease;
}

.button span { font-size: 1.15rem; }
.button:hover { transform: translateY(-3px); }
.button:active { transform: translateY(1px) scale(.99); }
.button--accent { color: #111; background: var(--accent); }
.button--accent:hover { background: var(--accent-bright); }

.text-link { position: relative; display: inline-flex; gap: 2rem; padding-block: .5rem; color: rgba(246,244,236,.76); font-size: .78rem; font-weight: 600; }
.text-link::after { content: ""; position: absolute; inset: auto 0 0; height: 1px; background: currentColor; transform-origin: left; transition: transform .25s ease; }
.text-link:hover::after { transform: scaleX(.45); }

.hero__facts { position: absolute; z-index: 2; right: 4vw; bottom: 2.25rem; display: grid; grid-template-columns: repeat(3, minmax(9rem, 1fr)); width: min(43rem, 48vw); border-top: 1px solid var(--line-dark); }
.hero__facts div { padding: 1.1rem 1rem 0; border-left: 1px solid var(--line-dark); }
.hero__facts strong { display: block; font-family: var(--mono); font-size: 1.25rem; font-weight: 500; font-variant-numeric: tabular-nums; }
.hero__facts span { display: block; margin-top: .35rem; color: rgba(246,244,236,.5); font-size: .64rem; line-height: 1.3; text-transform: uppercase; }
.hero__index { position: absolute; z-index: 2; right: 1rem; top: 50%; color: rgba(246,244,236,.35); font-family: var(--mono); font-size: .58rem; letter-spacing: .15em; writing-mode: vertical-rl; transform: rotate(180deg); }

.grade-line { display: grid; grid-template-columns: minmax(12rem, 22vw) 1fr; min-height: 5.5rem; color: var(--white); background: var(--accent); overflow: hidden; }
.grade-line p { display: flex; align-items: center; margin: 0; padding-left: 4vw; color: rgba(17,21,19,.72); font-family: var(--mono); font-size: .66rem; letter-spacing: .12em; text-transform: uppercase; border-right: 1px solid rgba(17,21,19,.22); }
.grade-line__viewport { min-width: 0; overflow: hidden; }
.grade-line__track { display: flex; width: max-content; height: 100%; white-space: nowrap; will-change: transform; animation: gradeLoop 12s linear infinite; }
.grade-line__group { display: flex; flex: none; align-items: center; gap: clamp(2rem, 4vw, 5rem); padding-inline: clamp(2rem, 3vw, 3rem); }
.grade-line__track span { color: var(--ink); font-family: var(--mono); font-size: .9rem; font-weight: 600; font-variant-numeric: tabular-nums; }

.section { padding-block: clamp(6.5rem, 10vw, 10.5rem); }
.section-heading { display: grid; grid-template-columns: .8fr 1.6fr 1fr; align-items: end; gap: 3rem; padding-bottom: 3.5rem; border-bottom: 1px solid var(--line); }
.section-heading h2, .process h2, .company h2, .contact h2 { margin: 0; font-family: var(--display); font-size: clamp(3.3rem, 5.5vw, 6.3rem); font-weight: 900; line-height: .86; letter-spacing: -.06em; text-transform: uppercase; text-wrap: balance; }
.section-heading > p:last-child { max-width: 31rem; margin: 0; color: var(--muted); font-size: .98rem; line-height: 1.7; text-wrap: pretty; }

.purchase-list { margin-left: 18%; }
.purchase-item { display: grid; grid-template-columns: 4.5rem minmax(0, 1fr) auto; gap: clamp(1.4rem, 3vw, 3.5rem); align-items: start; padding-block: 2.45rem; border-bottom: 1px solid var(--line); }
.purchase-item__number { padding-top: .35rem; color: var(--accent); font-family: var(--mono); font-size: .7rem; }
.purchase-item h3 { margin: 0 0 .65rem; font-family: var(--display); font-size: clamp(1.55rem, 2.5vw, 2.7rem); line-height: 1; letter-spacing: -.035em; text-transform: uppercase; }
.purchase-item p { max-width: 40rem; margin: 0; color: var(--muted); font-size: .9rem; }
.purchase-item__tag { min-width: 9rem; padding-top: .45rem; color: var(--muted); font-family: var(--mono); font-size: .61rem; letter-spacing: .08em; text-align: right; text-transform: uppercase; }

.spec-panel { display: grid; grid-template-columns: .85fr 1.3fr; margin-top: clamp(5rem, 8vw, 8rem); color: var(--white); background: var(--ink-soft); box-shadow: 0 2rem 5rem rgba(30,37,33,.14); }
.spec-panel__intro { padding: clamp(2.2rem, 5vw, 5rem); background: linear-gradient(145deg, rgba(214,110,50,.11), transparent 55%); }
.spec-panel__intro > span { color: var(--accent); font-family: var(--mono); font-size: .62rem; letter-spacing: .14em; text-transform: uppercase; }
.spec-panel__intro h3 { margin: 4.5rem 0 1rem; font-family: var(--display); font-size: clamp(2.5rem, 4vw, 4.3rem); line-height: .9; letter-spacing: -.05em; text-transform: uppercase; }
.spec-panel__intro p { max-width: 27rem; margin: 0; color: rgba(246,244,236,.55); font-size: .85rem; }
.spec-table { margin: 0; border-left: 1px solid var(--line-dark); }
.spec-table div { display: grid; grid-template-columns: 1.2fr 1fr; align-items: center; min-height: 5rem; padding-inline: clamp(1.25rem, 3.5vw, 3.5rem); border-bottom: 1px solid var(--line-dark); }
.spec-table div:last-child { border-bottom: 0; }
.spec-table dt, .spec-table dd { margin: 0; font-family: var(--mono); font-size: clamp(.72rem, 1.1vw, .92rem); font-variant-numeric: tabular-nums; }
.spec-table dd { color: rgba(246,244,236,.48); text-align: right; }

.process { position: relative; color: var(--white); background-color: var(--ink); background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px); background-size: 6rem 6rem; overflow: hidden; }
.process::after { content: ""; position: absolute; width: 32rem; aspect-ratio: 1; right: -12rem; top: -10rem; border: 1px solid rgba(214,110,50,.35); border-radius: 50%; box-shadow: 0 0 0 4rem rgba(214,110,50,.025), 0 0 0 8rem rgba(214,110,50,.02); }
.process__shell { position: relative; z-index: 1; display: grid; grid-template-columns: .85fr 1.35fr; gap: clamp(4rem, 9vw, 10rem); }
.process__head { align-self: start; position: sticky; top: 8rem; }
.process__head h2 { margin-top: 2.4rem; }
.process__head > p:last-child { max-width: 31rem; margin: 2rem 0 0; color: rgba(246,244,236,.58); }
.process__steps { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line-dark); }
.process__steps li { display: grid; grid-template-columns: 4rem 1fr; gap: 1.4rem; padding-block: 2.5rem 3rem; border-bottom: 1px solid var(--line-dark); }
.process__steps > li > span { color: var(--accent); font-family: var(--mono); font-size: .7rem; }
.process__steps h3 { margin: 0 0 .65rem; font-family: var(--display); font-size: clamp(1.7rem, 3vw, 3.1rem); line-height: .9; letter-spacing: -.04em; text-transform: uppercase; }
.process__steps p { max-width: 33rem; margin: 0; color: rgba(246,244,236,.52); font-size: .88rem; }

.company { display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: clamp(4rem, 9vw, 9rem); }
.company > * { min-width: 0; }
.company__visual { position: relative; margin: 0; }
.company__visual::before { content: ""; position: absolute; inset: -1.5rem 1.5rem 1.5rem -1.5rem; z-index: -1; border: 1px solid var(--line); }
.company__visual img { width: 100%; aspect-ratio: 1 / 1.08; object-fit: cover; filter: saturate(.65) contrast(1.06); }
.company__visual figcaption { position: absolute; inset: auto -1.5rem -1.5rem auto; width: min(17rem, 70%); padding: 1.3rem; color: var(--white); background: var(--accent); }
.company__visual figcaption span, .company__visual figcaption b { display: block; }
.company__visual figcaption span { color: rgba(17,21,19,.65); font-family: var(--mono); font-size: .58rem; letter-spacing: .12em; text-transform: uppercase; }
.company__visual figcaption b { margin-top: .35rem; color: var(--ink); font-family: var(--display); font-size: 1.05rem; text-transform: uppercase; }
.company__copy h2 { margin-top: 2.2rem; }
.company h2 { font-size: clamp(2.9rem, 4.35vw, 5rem); }
.company__lead { margin: 2rem 0 1rem; font-size: clamp(1.1rem, 1.5vw, 1.35rem); line-height: 1.5; text-wrap: pretty; }
.company__copy > p:not(.eyebrow):not(.company__lead) { max-width: 39rem; color: var(--muted); font-size: .9rem; }
.company__facts { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; margin-top: 2.5rem; padding-top: 2rem; border-top: 1px solid var(--line); }
.company__facts strong { display: block; font-family: var(--mono); font-size: 1.15rem; font-weight: 500; }
.company__facts span { display: block; margin-top: .5rem; color: var(--muted); font-size: .68rem; line-height: 1.4; text-transform: uppercase; }

.contact { color: var(--white); background: #181c1a; }
.contact__shell { display: grid; grid-template-columns: .82fr 1.18fr; gap: clamp(4rem, 9vw, 9rem); }
.contact__lead h2 { margin-top: 2.2rem; }
.contact__lead > p:not(.eyebrow) { max-width: 31rem; margin: 1.8rem 0 2.5rem; color: rgba(246,244,236,.56); }
.contact__phone { display: flex; justify-content: space-between; gap: 2rem; padding-block: 1rem; font-family: var(--mono); font-size: clamp(1.2rem, 2.2vw, 2rem); font-variant-numeric: tabular-nums; border-top: 1px solid var(--line-dark); border-bottom: 1px solid var(--line-dark); transition: color .2s ease; }
.contact__phone:hover, .contact__mail:hover { color: var(--accent-bright); }
.contact__mail { display: inline-block; margin-top: 1.2rem; color: rgba(246,244,236,.72); font-family: var(--mono); font-size: .85rem; }

.contact-form { display: grid; grid-template-columns: 1fr 1fr; align-self: start; gap: 2.3rem 1.5rem; padding: clamp(2rem, 4vw, 4rem); background: #222825; }
.field { position: relative; }
.field--wide { grid-column: 1 / -1; }
.field label { display: block; margin-bottom: .45rem; color: rgba(246,244,236,.45); font-family: var(--mono); font-size: .6rem; letter-spacing: .1em; text-transform: uppercase; }
.field input, .field textarea { width: 100%; padding: .75rem 0; color: var(--white); caret-color: var(--accent); border: 0; border-bottom: 1px solid rgba(246,244,236,.28); border-radius: 0; outline: 0; background: transparent; transition: border-color .2s ease; }
.field textarea { min-height: 6.5rem; resize: vertical; }
.field input:focus, .field textarea:focus { border-color: var(--accent); }
.field input[aria-invalid="true"] { border-color: #e4a079; }
.field__error { position: absolute; top: calc(100% + .25rem); left: 0; color: #e4a079; font-size: .65rem; }
.contact-form__footer { display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding-top: 1rem; }
.contact-form__footer p { max-width: 20rem; margin: 0; color: rgba(246,244,236,.4); font-size: .67rem; line-height: 1.45; }
.form-status { min-height: 1.3rem; margin: -.8rem 0 0; color: var(--accent-bright); font-size: .76rem; }

.contact__details { grid-column: 1 / -1; display: grid; grid-template-columns: 1.3fr 1fr .8fr; margin-top: 1rem; border-top: 1px solid var(--line-dark); border-bottom: 1px solid var(--line-dark); }
.contact__details > div { min-height: 9rem; padding: 1.6rem; border-right: 1px solid var(--line-dark); }
.contact__details > div:first-child { padding-left: 0; }
.contact__details > div:last-child { border-right: 0; }
.contact__details span { color: rgba(246,244,236,.4); font-family: var(--mono); font-size: .59rem; letter-spacing: .1em; text-transform: uppercase; }
.contact__details address, .contact__details p { margin: 1rem 0 0; font-style: normal; font-size: .88rem; line-height: 1.7; }
.contact__details a { transition: color .2s ease; }
.contact__details a:hover { color: var(--accent-bright); }
.legal-details { grid-column: 1 / -1; }
.legal-details summary { display: flex; justify-content: space-between; align-items: center; min-height: 4.5rem; cursor: pointer; color: rgba(246,244,236,.66); font-size: .78rem; font-weight: 600; list-style: none; }
.legal-details summary::-webkit-details-marker { display: none; }
.legal-details summary span { color: var(--accent); font-size: 1.2rem; transition: transform .2s ease; }
.legal-details[open] summary span { transform: rotate(45deg); }
.legal-details > div { max-width: 60rem; padding: 0 0 1.5rem; color: rgba(246,244,236,.48); font-size: .78rem; }
.legal-details p { margin: .35rem 0; }

.site-footer { color: rgba(246,244,236,.58); background: var(--ink); border-top: 1px solid var(--line-dark); }
.site-footer__inner { display: grid; grid-template-columns: 1.2fr 1fr .9fr auto; align-items: center; gap: 2.5rem; min-height: 11rem; }
.brand--footer { padding: 0; border: 0; }
.site-footer p { margin: 0; font-size: .72rem; line-height: 1.55; }
.site-footer nav { display: flex; flex-direction: column; gap: .3rem; font-size: .72rem; }
.site-footer nav a:hover { color: var(--white); }
.site-footer__copy { align-self: end; padding-bottom: 2rem; font-family: var(--mono); font-size: .6rem !important; }

.reveal { opacity: 0; transform: translateY(1.5rem); transition: opacity .75s cubic-bezier(.2,.7,.2,1), transform .75s cubic-bezier(.2,.7,.2,1); }
.reveal.is-visible { opacity: 1; transform: none; }

@keyframes heroIn { from { opacity: 0; transform: scale(1.08); } to { opacity: 1; transform: scale(1.015); } }
@keyframes gradeLoop { to { transform: translateX(-50%); } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

@media (max-width: 1100px) {
  :root { --shell: min(92vw, 72rem); }
  .site-header { grid-template-columns: auto 1fr auto; }
  .main-nav { display: none; }
  .menu-toggle { display: flex; align-items: center; justify-content: center; gap: .7rem; width: 6.5rem; color: var(--white); border: 0; border-right: 1px solid var(--line-dark); background: transparent; cursor: pointer; order: -1; }
  .menu-toggle span { font-family: var(--mono); font-size: .6rem; letter-spacing: .1em; text-transform: uppercase; }
  .menu-toggle i { position: absolute; width: 1rem; height: 1px; margin-left: 3.8rem; background: currentColor; transition: transform .2s ease; }
  .menu-toggle i:last-child { transform: translateY(4px); }
  .menu-toggle[aria-expanded="true"] i { transform: rotate(45deg); }
  .menu-toggle[aria-expanded="true"] i:last-child { transform: rotate(-45deg); }
  .main-nav.is-open { position: fixed; top: var(--header-h); left: 0; z-index: var(--z-menu); display: grid; align-content: center; width: 100%; height: calc(100dvh - var(--header-h)); padding: 2rem 8vw; background: rgba(17,21,19,.98); }
  .main-nav.is-open a { display: flex; align-items: center; justify-content: space-between; padding: 1.15rem 0; font-family: var(--display); font-size: clamp(2rem, 7vw, 4rem); line-height: 1; text-transform: uppercase; border: 0; border-bottom: 1px solid var(--line-dark); }
  .main-nav.is-open a::after { content: "↗"; color: var(--accent); font-size: 1.3rem; }
  .hero__facts { left: 4vw; right: auto; width: 72vw; }
  .section-heading { grid-template-columns: 1fr 2fr; }
  .section-heading > p:last-child { grid-column: 2; }
  .purchase-list { margin-left: 10%; }
  .contact__shell { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  :root { --header-h: 4.5rem; --shell: calc(100vw - 2.2rem); }
  .site-header { grid-template-columns: 4.5rem 1fr; }
  .menu-toggle { width: 4.5rem; }
  .menu-toggle span, .header-phone { display: none; }
  .menu-toggle i { margin-left: 0; }
  .brand { border-right: 0; padding-inline: 1rem; }
  .brand__copy b { font-size: .78rem; }
  .brand__copy small { display: none; }

  .hero { min-height: 50rem; align-items: end; }
  .hero__image { background-position: 66% center; }
  .hero__shade { background: linear-gradient(0deg, var(--ink) 3%, rgba(17,21,19,.88) 43%, rgba(17,21,19,.28) 100%), linear-gradient(90deg, rgba(17,21,19,.55), transparent); }
  .hero__grid { background-size: 50% 100%; }
  .hero__content { padding: 7rem 0 14rem; transform: none; }
  .hero h1 { margin-top: 1.7rem; font-size: clamp(2.1rem, 9vw, 2.85rem); line-height: .84; }
  .hero__lead { max-width: 29rem; font-size: .92rem; }
  .hero__actions { align-items: flex-start; flex-direction: column; gap: 1.1rem; }
  .button { width: 100%; }
  .hero__facts { left: 1.1rem; bottom: 1.5rem; width: calc(100% - 2.2rem); grid-template-columns: repeat(3, 1fr); }
  .hero__facts div { padding: .9rem .55rem 0; }
  .hero__facts strong { font-size: .95rem; }
  .hero__facts span { font-size: .51rem; }
  .hero__index { display: none; }

  .grade-line { grid-template-columns: 1fr; min-height: 6.5rem; }
  .grade-line p { min-height: 2.5rem; padding-left: 1.1rem; border-right: 0; border-bottom: 1px solid rgba(17,21,19,.22); }
  .grade-line__group { gap: 2.5rem; padding-inline: 1.1rem; }
  .section { padding-block: 6rem; }
  .section-heading { display: block; }
  .section-heading h2, .process h2, .company h2, .contact h2 { margin-top: 1.7rem; font-size: clamp(3rem, 14vw, 4.5rem); }
  .section-heading > p:last-child { margin-top: 1.5rem; }
  .purchase-list { margin-left: 0; }
  .purchase-item { grid-template-columns: 2.25rem 1fr; gap: 1rem; }
  .purchase-item__tag { grid-column: 2; min-width: 0; padding-top: 0; text-align: left; }

  .spec-panel { grid-template-columns: 1fr; }
  .spec-panel__intro { padding: 2rem 1.25rem 2.5rem; }
  .spec-panel__intro h3 { margin-top: 3rem; }
  .spec-table { border-left: 0; border-top: 1px solid var(--line-dark); }
  .spec-table div { grid-template-columns: 1fr; gap: .4rem; min-height: 5.5rem; padding: 1rem 1.25rem; }
  .spec-table dd { text-align: left; }

  .process__shell { grid-template-columns: 1fr; gap: 4rem; }
  .process__head { position: static; }
  .process__steps li { grid-template-columns: 2.25rem 1fr; }
  .company { grid-template-columns: 1fr; gap: 5rem; }
  .company h2 { font-size: clamp(2.45rem, 10.5vw, 3.3rem); }
  .company__visual::before { inset: -1rem 1rem 1rem -1rem; }
  .company__visual figcaption { right: 0; bottom: -1rem; }
  .company__facts { gap: 1rem; }

  .contact-form { grid-template-columns: 1fr; padding: 2rem 1.25rem; }
  .field--wide { grid-column: auto; }
  .contact-form__footer { align-items: stretch; flex-direction: column; }
  .contact__details { grid-template-columns: 1fr; }
  .contact__details > div, .contact__details > div:first-child { min-height: 0; padding: 1.5rem 0; border-right: 0; border-bottom: 1px solid var(--line-dark); }
  .contact__details > div:last-child { border-bottom: 0; }

  .site-footer__inner { grid-template-columns: 1fr 1fr; gap: 2rem; padding-block: 3rem; }
  .site-footer__inner > p:nth-child(2) { text-align: right; }
  .site-footer__copy { align-self: auto; padding: 0; text-align: right; }
}

@media (max-width: 420px) {
  .brand__mark { width: 1.75rem; }
  .hero__facts span { max-width: 5.8rem; }
  .company__facts, .site-footer__inner { grid-template-columns: 1fr; }
  .site-footer__inner > p:nth-child(2), .site-footer__copy { text-align: left; }
}