:root {
  --paper: #f3efe4;
  --paper-2: #e8e2d3;
  --ink: #161a18;
  --ink-soft: #3d4641;
  --muted: #6a726d;
  --field: #1a3530;
  --field-2: #25443d;
  --mint: #c7d6c3;
  --signal: #dd4a1c;
  --signal-ink: #8f2a0e;
  --line: rgba(22, 26, 24, 0.12);
  --line-strong: rgba(22, 26, 24, 0.22);
  --white: #fbfaf6;
  --radius: 2px;
  --max: 1180px;
  --header: 76px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Source Sans 3", "Segoe UI", sans-serif;
  font-size: 18px;
  line-height: 1.55;
  letter-spacing: -0.011em;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--signal);
}

h1,
h2,
h3,
.display {
  font-family: "Bricolage Grotesque", "Segoe UI", sans-serif;
  font-weight: 560;
  letter-spacing: -0.035em;
  line-height: 0.98;
  margin: 0;
}

p {
  margin: 0 0 1em;
}

p:last-child {
  margin-bottom: 0;
}

.mono {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.wrap {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
}

.skip {
  position: absolute;
  left: 12px;
  top: -40px;
  background: var(--ink);
  color: var(--paper);
  padding: 8px 12px;
  z-index: 80;
}

.skip:focus {
  top: 12px;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(243, 239, 228, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  height: var(--header);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo img {
  height: 28px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav a {
  text-decoration: none;
  font-size: 15px;
  color: var(--ink-soft);
}

.nav a:hover,
.nav a.is-active {
  color: var(--ink);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
  padding: 10px 16px;
  font-size: 14px;
  border-radius: var(--radius);
}

.header-cta:hover {
  background: var(--signal);
  color: var(--white);
}

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line-strong);
  padding: 8px 10px;
  font: inherit;
  cursor: pointer;
}

/* Hero */

.hero {
  position: relative;
  min-height: calc(100vh - var(--header));
  display: grid;
  align-items: end;
  overflow: hidden;
  background: var(--field);
  color: var(--paper);
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.05);
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(22, 26, 24, 0.18) 0%, rgba(22, 26, 24, 0.72) 72%),
    linear-gradient(90deg, rgba(22, 26, 24, 0.45) 0%, transparent 52%);
}

.hero-copy {
  position: relative;
  z-index: 1;
  padding: 56px 0 64px;
  max-width: 760px;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: var(--mint);
}

.kicker::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
}

.hero h1 {
  font-size: clamp(46px, 8vw, 92px);
  margin-bottom: 22px;
}

.hero .lead {
  font-size: 20px;
  max-width: 34ch;
  color: #ece7da;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: var(--radius);
  text-decoration: none;
  font-size: 15px;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--signal);
  color: var(--white);
}

.btn-primary:hover {
  background: #c53d14;
  color: var(--white);
}

.btn-ghost {
  border-color: rgba(243, 239, 228, 0.45);
  color: var(--paper);
}

.btn-ghost:hover {
  background: var(--paper);
  color: var(--ink);
}

.btn-dark {
  background: var(--ink);
  color: var(--paper);
}

.btn-dark:hover {
  background: var(--signal);
  color: var(--white);
}

.btn-line {
  border-color: var(--line-strong);
  background: transparent;
}

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

/* Sections */

section {
  padding: 88px 0;
}

.section-head {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 32px;
  margin-bottom: 48px;
  align-items: end;
}

.section-head h2 {
  font-size: clamp(34px, 5vw, 56px);
  max-width: 14ch;
}

.intro {
  border-bottom: 1px solid var(--line);
  padding: 36px 0 48px;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: 36px;
}

.metric {
  background: var(--paper);
  padding: 22px 20px 20px;
}

.metric strong {
  display: block;
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: 28px;
  letter-spacing: -0.04em;
  margin-bottom: 6px;
}

.metric span {
  color: var(--muted);
  font-size: 14px;
}

.service-list {
  display: grid;
  border-top: 1px solid var(--line);
}

.service {
  display: grid;
  grid-template-columns: 72px 220px 1fr auto;
  gap: 28px;
  align-items: start;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.service h3 {
  font-size: 28px;
}

.service p {
  color: var(--ink-soft);
  max-width: 58ch;
}

.gallery {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 16px;
}

.shot {
  position: relative;
  overflow: hidden;
  background: var(--paper-2);
  min-height: 280px;
}

.shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 1;
}

.shot figcaption {
  position: absolute;
  left: 16px;
  bottom: 16px;
  background: var(--paper);
  padding: 8px 10px;
}

.gallery-side {
  display: grid;
  gap: 16px;
}

.why {
  background: var(--field);
  color: var(--paper);
}

.why .section-head {
  color: var(--mint);
}

.why h2 {
  color: var(--paper);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.why-card {
  border: 1px solid rgba(243, 239, 228, 0.14);
  padding: 28px 24px;
  min-height: 240px;
}

.why-card h3 {
  font-size: 26px;
  margin: 16px 0 12px;
}

.why-card p {
  color: #d9d4c6;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.step {
  padding-top: 16px;
  border-top: 2px solid var(--ink);
}

.step h3 {
  font-size: 24px;
  margin: 14px 0 10px;
}

.step p {
  color: var(--ink-soft);
  font-size: 16px;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.split img {
  width: 100%;
  height: 520px;
  object-fit: cover;
}

.cta-band {
  background: var(--signal);
  color: var(--white);
  padding: 72px 0;
}

.cta-band h2 {
  font-size: clamp(36px, 5vw, 64px);
  max-width: 14ch;
  margin-bottom: 16px;
}

.cta-band p {
  max-width: 42ch;
  margin-bottom: 24px;
}

.cta-band .btn-dark:hover {
  background: var(--ink);
}

.product-band {
  background: var(--mint);
  color: var(--field);
}

.product-band .mono {
  color: var(--field);
}

.product-band h2 {
  color: var(--ink);
  font-size: clamp(36px, 5vw, 64px);
  max-width: 14ch;
  margin-bottom: 16px;
}

.product-band p {
  max-width: 48ch;
  margin-bottom: 24px;
}

.product-split {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: end;
}

.product-facts {
  display: grid;
  gap: 14px;
  padding: 24px;
  background: rgba(251, 250, 246, 0.55);
  border: 1px solid rgba(26, 53, 48, 0.12);
}

.product-facts p {
  margin: 0;
}

.btn-field {
  background: var(--field);
  color: var(--paper);
}

.btn-field:hover {
  background: var(--ink);
  color: var(--paper);
}

/* Page hero */

.page-hero {
  padding: 72px 0 28px;
}

.page-hero h1 {
  font-size: clamp(42px, 7vw, 78px);
  max-width: 14ch;
}

.page-hero p {
  max-width: 46ch;
  color: var(--ink-soft);
  margin-top: 18px;
  font-size: 20px;
}

.tank-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.tank-card {
  background: var(--white);
  border: 1px solid var(--line);
}

.tank-card img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.tank-card div {
  padding: 22px;
}

.tank-card h3 {
  font-size: 24px;
  margin-bottom: 10px;
}

.prose {
  max-width: 68ch;
}

.prose h2 {
  font-size: 32px;
  margin: 1.4em 0 0.5em;
}

.prose h3 {
  font-size: 22px;
  margin: 1.2em 0 0.4em;
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
}

.contact-card {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 28px;
}

.contact-card a {
  color: var(--signal);
}

form {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 6px;
  font-size: 14px;
}

input,
textarea,
select {
  font: inherit;
  padding: 12px 12px;
  border: 1px solid var(--line-strong);
  background: var(--white);
  color: var(--ink);
  border-radius: var(--radius);
}

textarea {
  min-height: 140px;
  resize: vertical;
}

.form-note {
  display: none;
  padding: 14px 16px;
  background: var(--mint);
  color: var(--field);
}

.form-note.is-visible {
  display: block;
}

.form-note.is-error {
  background: #f3d2c8;
  color: #8f2a0e;
}

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

.legal {
  font-size: 16px;
  color: var(--ink-soft);
}

.legal ul {
  padding-left: 1.2em;
  margin: 0 0 1em;
}

.legal li {
  margin-bottom: 0.4em;
}

.toc {
  display: grid;
  gap: 6px;
  margin: 24px 0 36px;
}

.toc a {
  text-decoration: none;
  color: var(--ink);
}

.toc a:hover {
  color: var(--signal);
}

/* Footer */

.site-footer {
  background: var(--ink);
  color: #d6d1c4;
  padding: 56px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(243, 239, 228, 0.1);
}

.site-footer .logo img {
  filter: invert(1);
  height: 24px;
  margin-bottom: 16px;
}

.site-footer a {
  color: #ece7da;
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--signal);
}

.footer-col {
  display: grid;
  gap: 8px;
  align-content: start;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-top: 18px;
  font-size: 13px;
  color: #9aa19c;
}

@media (max-width: 900px) {
  .menu-toggle {
    display: inline-flex;
  }

  .nav,
  .header-cta {
    display: none;
  }

  .site-header.is-open .nav {
    display: flex;
    flex-direction: column;
    position: absolute;
    left: 0;
    right: 0;
    top: var(--header);
    background: var(--paper);
    padding: 18px 20px 24px;
    border-bottom: 1px solid var(--line);
    align-items: flex-start;
  }

  .section-head,
  .service,
  .gallery,
  .why-grid,
  .steps,
  .split,
  .product-split,
  .metrics,
  .tank-grid,
  .contact-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .service {
    gap: 8px;
  }

  .split img {
    height: 320px;
  }

  .hero {
    min-height: 86vh;
  }

  .footer-bottom {
    flex-direction: column;
  }
}