:root {
  --black: #0b0c0c;
  --charcoal: #1d1b18;
  --muted: #66635d;
  --warm-white: #f7f7f4;
  --white: #ffffff;
  --gold: #efbf04;
  --line: #d8d6cf;
  --rail-width: clamp(6.5rem, 8.8vw, 8.75rem);
  --content-width: 86rem;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-padding-top: 2rem;
}

body {
  margin: 0;
  color: var(--charcoal);
  font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
  background: var(--warm-white);
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-underline-offset: 0.2em;
}

a:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 1rem;
  left: 1rem;
  padding: 0.75rem 1rem;
  color: var(--white);
  background: var(--black);
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: translateY(0);
}

.brand-rail {
  position: fixed;
  z-index: 20;
  inset: 0 auto 0 0;
  width: var(--rail-width);
  background: var(--black);
  border-right: 3px solid var(--gold);
}

.brand-rail a {
  display: grid;
  width: 100%;
  height: 100%;
  place-items: center;
  text-decoration: none;
}

.brand-rail span {
  color: var(--gold);
  font-family: "Saira", "Arial Narrow", sans-serif;
  font-size: clamp(2rem, 3.4vw, 3.5rem);
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.site-shell {
  min-width: 0;
  margin-left: var(--rail-width);
  background: var(--white);
}

.site-header {
  display: none;
}

.mobile-brand {
  font-family: "Roboto Mono", monospace;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.mobile-brand {
  display: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  width: min(100%, var(--content-width));
  margin: 0 auto;
  padding: clamp(4rem, 7vw, 7rem) clamp(1.5rem, 4vw, 4rem) 6rem;
  padding-left: clamp(4rem, 8vw, 7rem);
  gap: clamp(4rem, 7vw, 7rem);
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 56rem;
}

.eyebrow,
.model-line,
.model-id {
  font-family: "Roboto Mono", monospace;
}

.eyebrow {
  margin: 0 0 1.25rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 1.5;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  overflow-wrap: normal;
  word-break: normal;
  hyphens: none;
}

p {
  overflow-wrap: break-word;
}

h1 {
  margin: 0;
}

.hero-title-main {
  display: block;
  color: var(--black);
  font-family: "Saira", "Arial Narrow", sans-serif;
  font-size: clamp(3.4rem, 6vw, 6.5rem);
  font-weight: 600;
  letter-spacing: -0.045em;
  line-height: 0.88;
  text-transform: uppercase;
}

.hero-title-main > span {
  display: block;
}

.hero-title-sub {
  display: block;
  margin-top: 1.25rem;
  font-size: clamp(1.35rem, 2.1vw, 2.15rem);
  font-weight: 400;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.hero-lead {
  max-width: 46rem;
  margin: 2.5rem 0 0;
  font-size: clamp(1.05rem, 1.35vw, 1.25rem);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 3.25rem;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.2rem;
  border: 1px solid var(--black);
  font-family: "Roboto Mono", monospace;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-decoration: none;
  text-transform: uppercase;
}

.button-primary {
  color: var(--white);
  background: var(--black);
}

.button:hover {
  color: var(--black);
  background: var(--gold);
  border-color: var(--black);
}

.product-figure {
  width: min(79.2%, 41.8rem);
  min-width: 0;
  margin: 0;
}

.product-figure picture,
.product-figure img {
  display: block;
  width: 100%;
}

.product-figure img {
  height: auto;
}

.product-figure figcaption {
  max-width: 50rem;
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.55;
}

.model-id {
  color: var(--charcoal);
  font-weight: 400;
}

.section {
  display: grid;
  grid-template-columns: minmax(15rem, 0.75fr) minmax(20rem, 1.25fr);
  width: min(100%, var(--content-width));
  margin: 0 auto;
  padding: clamp(5rem, 9vw, 9rem) clamp(1.5rem, 4vw, 4rem);
  column-gap: clamp(3rem, 8vw, 9rem);
}

.product-section {
  position: relative;
  background: var(--warm-white);
}

.product-section::before,
.about-section::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 1px;
  background: var(--line);
  content: "";
}

.section-heading h2,
.contact-heading h2 {
  margin: 0;
  color: var(--black);
  font-family: "Saira", "Arial Narrow", sans-serif;
  font-size: clamp(2.7rem, 5vw, 5.4rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 0.95;
  text-transform: uppercase;
}

.model-line {
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  line-height: 1.6;
  text-transform: uppercase;
}

.model-line span {
  color: var(--black);
  font-weight: 600;
}

.product-intro,
.about-copy {
  align-self: start;
}

.section-lead {
  margin: 0;
  color: var(--black);
  font-size: clamp(1.4rem, 2.3vw, 2.15rem);
  letter-spacing: -0.025em;
  line-height: 1.38;
}

.product-intro > p:not(.section-lead),
.about-copy > p:not(.section-lead) {
  max-width: 45rem;
  margin: 1.8rem 0 0;
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.75;
}

.development-path {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: clamp(4rem, 7vw, 7rem) 0 0;
  padding: 0;
  border-top: 1px solid var(--black);
  list-style: none;
}

.development-path li {
  display: grid;
  grid-template-columns: auto 1fr;
  align-content: start;
  min-width: 0;
  padding: 1.5rem clamp(1rem, 2.2vw, 2rem) 0 0;
  gap: 1rem;
}

.development-path li + li {
  padding-left: clamp(1rem, 2.2vw, 2rem);
  border-left: 1px solid var(--line);
}

.step-number {
  color: var(--muted);
  font-family: "Roboto Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}

.development-path h3,
.contact-block h3 {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.4;
  text-transform: uppercase;
}

.development-path p {
  margin: 0.8rem 0 0;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.7;
}

.about-section {
  position: relative;
  background: var(--white);
}

.principles {
  display: grid;
  margin: 3.5rem 0 0;
  border-top: 1px solid var(--black);
}

.principles div {
  display: grid;
  grid-template-columns: 8rem 1fr;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--line);
  gap: 1.5rem;
}

.principles dt {
  font-family: "Roboto Mono", monospace;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.principles dd {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.contact-section {
  padding: clamp(5rem, 9vw, 9rem) max(clamp(1.5rem, 4vw, 4rem), calc((100% - var(--content-width)) / 2 + 4rem));
  color: var(--white);
  background: var(--black);
  border-top: 3px solid var(--gold);
}

.contact-section .eyebrow {
  color: var(--gold);
}

.contact-heading {
  display: grid;
  grid-template-columns: minmax(28rem, 0.95fr) minmax(20rem, 1.05fr);
  column-gap: clamp(3rem, 6vw, 6rem);
}

.contact-heading .eyebrow {
  grid-column: 1;
}

.contact-heading h2 {
  grid-column: 1;
  color: var(--white);
  font-size: clamp(2.7rem, 4.4vw, 4.8rem);
}

.contact-heading > p:last-child {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: end;
  max-width: 36rem;
  margin: 0;
  color: #c9c7c1;
  font-size: clamp(1.2rem, 2vw, 1.7rem);
  line-height: 1.5;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 0.8fr 1.35fr;
  margin-top: clamp(4rem, 7vw, 7rem);
  border-top: 1px solid #565651;
}

.contact-block {
  min-width: 0;
  padding: 1.75rem 2rem 0 0;
}

.contact-block + .contact-block {
  padding-left: 2rem;
  border-left: 1px solid #565651;
}

.contact-block h3 {
  color: var(--gold);
}

.contact-block p,
.contact-block address,
.company-details dl {
  margin: 1rem 0 0;
  color: #e4e3de;
  font-size: 0.94rem;
  font-style: normal;
  line-height: 1.75;
}

.contact-block p + p {
  margin-top: 0.15rem;
}

.contact-block a:hover,
footer a:hover {
  color: var(--gold);
}

.company-details dl {
  display: grid;
  gap: 0.7rem;
}

.company-details dl div {
  display: grid;
  grid-template-columns: minmax(8rem, 1fr) auto;
  gap: 1.5rem;
}

.company-details dt {
  color: #aaa9a4;
}

.company-details dd {
  margin: 0;
  font-family: "Roboto Mono", monospace;
  font-size: 0.82rem;
  text-align: right;
}

footer {
  display: flex;
  justify-content: space-between;
  margin-top: 6rem;
  padding-top: 1.5rem;
  border-top: 1px solid #565651;
  color: #aaa9a4;
  font-family: "Roboto Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

footer p {
  margin: 0;
}

@media (max-width: 1100px) {
  .contact-heading {
    grid-template-columns: 1fr;
  }

  .contact-heading > p:last-child {
    grid-column: 1;
    grid-row: auto;
    margin-top: 2rem;
  }
}

@media (max-width: 820px) {
  html {
    scroll-padding-top: 5rem;
  }

  .brand-rail {
    display: none;
  }

  .site-shell {
    margin-left: 0;
  }

  .site-header {
    display: flex;
    position: sticky;
    z-index: 20;
    top: 0;
    align-items: center;
    justify-content: flex-start;
    min-height: 4.5rem;
    padding: 1rem 1.25rem;
    color: var(--white);
    background: var(--black);
    border-bottom: 3px solid var(--gold);
  }

  .mobile-brand {
    display: block;
    color: var(--gold);
  }

  .hero {
    padding-top: 4.5rem;
    padding-bottom: 5rem;
  }

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

  .section-heading {
    margin-bottom: 3rem;
  }

  .development-path {
    grid-template-columns: 1fr;
  }

  .development-path li {
    padding: 1.5rem 0;
  }

  .development-path li + li {
    padding-left: 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .contact-heading > p:last-child {
    grid-column: 1;
    grid-row: auto;
    margin-top: 2rem;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .contact-block {
    padding: 1.5rem 0;
  }

  .contact-block + .contact-block {
    padding-left: 0;
    border-top: 1px solid #565651;
    border-left: 0;
  }
}

@media (max-width: 560px) {
  .hero {
    padding: 3.5rem 1.25rem 4rem;
  }

  .hero-title-main {
    font-size: clamp(2.8rem, 16vw, 4.4rem);
  }

  .hero-title-sub {
    font-size: 1.25rem;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .product-figure {
    width: 100%;
  }

  .section {
    padding: 4.5rem 1.25rem;
  }

  .section-heading h2,
  .contact-heading h2 {
    font-size: clamp(2.5rem, 14vw, 4rem);
  }

  .principles div {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .contact-section {
    padding: 4.5rem 1.25rem 2rem;
  }

  .company-details dl div {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }

  .company-details dd {
    text-align: left;
  }

  footer {
    align-items: flex-start;
    flex-direction: column;
    margin-top: 4rem;
    gap: 1rem;
  }
}