:root {
  --bg: #030303;
  --panel: #070707;
  --panel-soft: #0b0b0b;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #f6f6f6;
  --muted: #9ca3af;
  --muted-2: #6f7782;
  --red: #a6120d;
  --red-soft: rgba(166, 18, 13, 0.16);
  --max: 1216px;
  --radius: 8px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.contact-form { padding: 32px; background: var(--panel-soft); border: 1px solid var(--line-strong); border-radius: var(--radius); }
.contact-form label { display: block; margin-bottom: 8px; font-size: 14px; font-weight: 700; }
.contact-form input, .contact-form textarea { width: 100%; padding: 13px 14px; margin-bottom: 22px; background: #030303; border: 1px solid var(--line-strong); border-radius: 4px; color: var(--text); font: inherit; }
.contact-form textarea { resize: vertical; }
.contact-form input:focus, .contact-form textarea:focus { outline: 2px solid #cf3028; outline-offset: 2px; }
.contact-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.contact-form button { cursor: pointer; }
.contact-form button:disabled { opacity: .65; cursor: wait; }
.contact-status { margin: 18px 0 0; color: var(--muted); line-height: 1.6; }
.contact-status:empty { display: none; }
.contact-status.is-error { color: #ffb1ab; }
.contact-office { line-height: 1.7; }
.contact-office + .button { margin-top: 16px; }
#home, #services, #about, #contacts, #partners { scroll-margin-top: 110px; }
@media (max-width: 800px) {
  .contact-grid { grid-template-columns: 1fr; gap: 30px; }
  .contact-form { padding: 24px; }
}
@media (max-width: 480px) {
  .contact-form-row { grid-template-columns: 1fr; gap: 0; }
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  color: var(--text);
  scroll-behavior: smooth;
}

html.is-loading,
html.is-loading body {
  overflow: hidden;
}

body {
  margin: 0;
  background: #000;
  color: var(--text);
}

a {
  color: inherit;
  text-decoration: none;
  transition:
    color 180ms ease,
    box-shadow 180ms ease,
    outline-color 180ms ease;
}

a:where(:not(.button)) {
  border-radius: 4px;
}

a:where(:not(.button)):hover,
a:where(:not(.button)):focus-visible {
  color: var(--red);
  box-shadow: 0 0 0 3px var(--red-soft);
}

a:where(:not(.button)):focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 2px;
}

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

.site-shell {
  min-height: 100vh;
  background:
    radial-gradient(circle at 45% 0%, rgba(166, 18, 13, 0.09), transparent 28rem),
    #000;
}

.site-loader {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  background: #000;
  transition:
    opacity 320ms ease,
    visibility 320ms ease;
}

.site-loader[hidden] {
  display: none;
}

.site-loader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.site-loader-inner {
  position: relative;
  width: min(100vw - 48px, 420px);
  min-height: 420px;
}

.site-loader-lockup {
  position: absolute;
  top: calc(50% - 136px);
  left: 50%;
  display: grid;
  gap: 8px;
  transform: translateX(-50%);
  text-align: center;
  font-size: 16px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0.06em;
}

.site-loader-lockup span {
  color: var(--muted);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.34em;
}

.site-loader-orbit {
  position: absolute;
  inset: 50% auto auto 50%;
  width: 112px;
  height: 112px;
  transform: translate(-50%, -50%);
}

.site-loader-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
}

.site-loader-ring-mid {
  border: 1px solid rgba(255, 255, 255, 0.08);
  animation: loader-ring-mid 2.4s ease-in-out infinite;
}

.site-loader-ring-outer {
  inset: -28px;
  border: 1px solid rgba(166, 18, 13, 0.22);
  animation: loader-ring-outer 2.4s ease-in-out infinite;
}

.site-loader-mark {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: radial-gradient(circle at center, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.015) 64%, transparent 65%);
  box-shadow: 0 0 18px rgba(255, 255, 255, 0.04);
  animation: loader-breathe 2.4s ease-in-out infinite;
}

.site-loader-mark img {
  width: 46px;
  height: auto;
}

.site-loader-percent {
  position: absolute;
  top: calc(50% + 88px);
  left: 50%;
  transform: translateX(-50%);
  color: #a7adb6;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.site-loader-percent,
.site-loader-lockup {
  transition: transform 220ms ease, opacity 220ms ease;
}

.site-loader.is-complete .site-loader-lockup {
  transform: translateX(-50%) translateY(-6px);
}

.site-loader.is-complete .site-loader-percent {
  transform: translateX(-50%) translateY(4px);
}

.container {
  width: min(var(--max), calc(100% - 64px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.86);
  backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  min-height: 88px;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 178px;
}

.brand-mark {
  width: 38px;
  height: 46px;
  object-fit: contain;
}

.brand-text {
  display: grid;
  gap: 1px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0;
}

.brand-text small {
  color: var(--muted);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.28em;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: transparent;
  color: var(--text);
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 18px;
  height: 2px;
  margin: auto;
  background: currentColor;
  content: "";
}

.nav-toggle span::before {
  transform: translateY(-7px);
}

.nav-toggle span::after {
  transform: translateY(5px);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--red);
}

.site-nav a[aria-current="page"] {
  color: var(--text);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.phone-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-weight: 700;
}

.phone-link svg,
.contact-row svg,
.card-icon svg,
.check-icon svg {
  width: 18px;
  height: 18px;
  color: var(--red);
}

.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid #fff;
  border-radius: 7px;
  padding: 0 28px;
  background: #fff;
  color: #000;
  font-weight: 900;
}

.button.primary {
  border-color: var(--red);
  background: var(--red);
  color: var(--text);
}

.button.compact {
  min-height: 42px;
  padding-inline: 18px;
  font-size: 14px;
}

.hero {
  position: relative;
  min-height: 785px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  background:
    radial-gradient(circle at 78% 34%, rgba(255, 255, 255, 0.05), transparent 18rem),
    linear-gradient(180deg, rgba(4, 4, 4, 0.98), rgba(0, 0, 0, 0.96)),
    #040404;
}

.hero.short {
  min-height: 520px;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  pointer-events: none;
}

.hero-bg,
.cta-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-position: center;
  background-size: cover;
}

.hero-bg {
  opacity: 0.82;
}

.cta-bg {
  opacity: 0.58;
}

.hero-bg.flip-horizontal {
  transform: scaleX(-1);
}

.hero-art {
  height: 100%;
  width: auto;
  max-width: none;
  object-fit: contain;
  object-position: center bottom;
  opacity: 0.75;
}

.hero-art.flip-horizontal {
  transform: scaleX(-1);
}

.hero::after {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.72) 0%, rgba(0, 0, 0, 0.48) 42%, rgba(0, 0, 0, 0.24) 74%, rgba(0, 0, 0, 0.12) 100%),
    linear-gradient(0deg, #000 0%, rgba(0, 0, 0, 0.22) 34%, transparent 68%);
  content: "";
}

.cta-band::after {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, #000 0%, rgba(0, 0, 0, 0.88) 34%, rgba(0, 0, 0, 0.48) 72%, rgba(0, 0, 0, 0.22) 100%),
    linear-gradient(0deg, #000 0%, transparent 48%);
  content: "";
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-top: 138px;
}

.hero > .hero-content {
  width: min(var(--max), calc(100% - 48px));
  padding-top: 74px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--red);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.36em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 38px;
  height: 1px;
  background: var(--red);
  content: "";
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1,
h2,
.stat-value {
  font-weight: 950;
  letter-spacing: 0;
  line-height: 0.95;
}

h1 {
  margin-top: 24px;
  font-size: clamp(54px, 8vw, 82px);
}

.hero h1 {
  max-width: 720px;
  font-size: clamp(54px, 5.3vw, 68px);
}

h1 .accent {
  display: block;
  color: var(--red);
}

.lead {
  max-width: 650px;
  margin-top: 28px;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.45;
}

.hero .lead {
  color: #fff;
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  margin-top: 46px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section {
  border-bottom: 1px solid var(--line);
  padding: 96px 0;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  padding: 40px 0;
}

.stat-value {
  font-size: clamp(42px, 6vw, 58px);
}

.stat-label,
.meta,
.card-link {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.stat-label {
  margin-top: 10px;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 52px;
}

.section-copy {
  max-width: 680px;
}

.section-copy + .card-grid,
.section-copy + .blog-grid,
.section-copy + .feature-grid {
  margin-top: 34px;
}

h2 {
  font-size: clamp(42px, 5vw, 58px);
}

.section-copy p,
.page-copy p,
.article-deck {
  margin-top: 18px;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.52;
}

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

.card-grid.two {
  grid-template-columns: repeat(2, 1fr);
}

.service-card,
.info-card,
.blog-card,
.credential-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(4, 4, 4, 0.7);
  transition:
    transform 220ms ease,
    border-color 220ms ease,
    box-shadow 220ms ease,
    background-color 220ms ease;
  transform: translateY(0);
  transform-style: preserve-3d;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}

.service-card:hover,
.service-card:focus-within,
.info-card:hover,
.info-card:focus-within,
.blog-card:hover,
.blog-card:focus-within,
.credential-card:hover,
.credential-card:focus-within {
  border-color: var(--red);
  background: rgba(10, 6, 6, 0.94);
  transform: translateY(-8px);
  box-shadow:
    0 26px 56px rgba(0, 0, 0, 0.42),
    0 0 0 1px var(--red-soft);
}

.service-card,
.info-card,
.credential-card {
  min-height: 206px;
  padding: 30px 28px;
}

.service-card h3,
.info-card h3,
.credential-card h3,
.blog-card h3 {
  margin-top: 22px;
  font-size: 23px;
  line-height: 1.1;
}

.service-card p,
.info-card p,
.credential-card p,
.blog-card p {
  margin-top: 14px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.52;
}

.card-link {
  display: inline-flex;
  gap: 8px;
  margin-top: 26px;
  color: var(--muted);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.feature-item {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px;
  background: rgba(4, 4, 4, 0.7);
  transition:
    transform 220ms ease,
    border-color 220ms ease,
    box-shadow 220ms ease,
    background-color 220ms ease;
  transform: translateY(0);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}

.feature-item:hover,
.feature-item:focus-within {
  border-color: var(--red);
  background: rgba(10, 6, 6, 0.94);
  transform: translateY(-8px);
  box-shadow:
    0 26px 56px rgba(0, 0, 0, 0.42),
    0 0 0 1px var(--red-soft);
}

.feature-item h3 {
  font-size: 22px;
}

.feature-item p {
  margin-top: 12px;
  color: var(--muted);
  line-height: 1.55;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.9fr);
  align-items: center;
  gap: 64px;
}

.check-list {
  display: grid;
  gap: 18px;
  margin-top: 34px;
  padding: 0;
  list-style: none;
}

.check-list li {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 12px;
  color: var(--text);
  font-weight: 800;
}

.media-frame {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  aspect-ratio: 16 / 9;
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.diesel-section {
  position: relative;
  overflow: hidden;
}

.diesel-section::before {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at top right, rgba(166, 18, 13, 0.22), transparent 22rem),
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent 16rem);
  pointer-events: none;
  content: "";
}

.diesel-section .container {
  position: relative;
  z-index: 1;
}

.diesel-head {
  align-items: start;
}

.diesel-shell {
  border: 1px solid rgba(166, 18, 13, 0.34);
  border-radius: 18px;
  padding: 28px;
  background:
    linear-gradient(180deg, rgba(17, 8, 8, 0.96), rgba(4, 4, 4, 0.98)),
    #080808;
  box-shadow:
    0 28px 60px rgba(0, 0, 0, 0.34),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.diesel-topbar {
  display: grid;
  gap: 10px;
  margin-bottom: 22px;
}

.diesel-topbar h3 {
  margin: 0;
  font-size: clamp(26px, 3vw, 34px);
  line-height: 1.05;
}

.diesel-release-line {
  margin: 0;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.diesel-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.02);
}

.diesel-table {
  width: 100%;
  min-width: 860px;
  border-collapse: collapse;
}

.diesel-table th,
.diesel-table td {
  padding: 16px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
}

.diesel-table thead th {
  background: rgba(166, 18, 13, 0.14);
  color: #f5e8e8;
  font-family: inherit;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: normal;
  text-transform: uppercase;
}

.diesel-table thead th:first-child,
.diesel-table tbody th[scope="row"] {
  position: sticky;
  left: 0;
  text-align: left;
}

.diesel-table thead th:first-child {
  z-index: 2;
  background: rgba(112, 14, 12, 0.92);
}

.diesel-table tbody th[scope="row"] {
  z-index: 1;
  background: rgba(12, 12, 12, 0.98);
  color: var(--text);
  font-size: 14px;
  font-weight: 800;
  white-space: nowrap;
}

.diesel-table tbody td {
  color: #e7eaee;
  font-feature-settings: "tnum" 1;
}

.diesel-table tbody tr:hover {
  background: rgba(166, 18, 13, 0.08);
}

.diesel-row-highlight {
  background: linear-gradient(90deg, rgba(166, 18, 13, 0.1), rgba(166, 18, 13, 0.03));
}

.diesel-table .is-up {
  color: #ffd0ce;
}

.diesel-source {
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
}

.blog-card {
  overflow: hidden;
}

.blog-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.blog-card-body {
  padding: 28px;
}

.blog-card .category {
  color: var(--red);
}

.blog-card h3 {
  margin-top: 14px;
}

.blog-card .meta {
  margin-top: 30px;
}

.cta-band {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  min-height: 460px;
}

.cta-content {
  position: relative;
  z-index: 2;
  display: grid;
  min-height: 460px;
  place-items: center;
  text-align: center;
}

.cta-content h2 {
  max-width: 650px;
}

.cta-content p {
  max-width: 620px;
  margin-top: 22px;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.45;
}

.cta-actions {
  justify-content: center;
}

.cta-actions .button[href^="tel:"] {
  white-space: nowrap;
  flex: 0 0 auto;
  min-width: 228px;
}

.site-footer {
  padding: 76px 0 26px;
  background: #000;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1fr 1.25fr;
  gap: 58px;
}

.footer-brand p {
  max-width: 300px;
  margin-top: 24px;
  color: var(--muted);
  line-height: 1.55;
}

.footer-brand .authority {
  margin-top: 26px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  font-weight: 800;
}

.footer-col h3 {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.footer-col ul {
  display: grid;
  gap: 16px;
  margin: 24px 0 0;
  padding: 0;
  color: var(--muted);
  list-style: none;
}

.contact-row {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 12px;
  align-items: start;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 56px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
}

.footer-tagline {
  color: var(--muted);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.34em;
  text-transform: uppercase;
}

.page-hero {
  position: relative;
  min-height: 500px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(4, 4, 4, 0.98), rgba(0, 0, 0, 0.96)),
    #040404;
}

.page-hero::after {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.82) 0%, rgba(0, 0, 0, 0.56) 42%, rgba(0, 0, 0, 0.2) 76%, rgba(0, 0, 0, 0.06) 100%);
  content: "";
}

.page-hero .hero-content {
  position: relative;
  z-index: 2;
  padding-top: 122px;
}

.page-hero h1 {
  max-width: 760px;
}

.page-hero-contained .page-hero-art {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: right center;
  opacity: 0.96;
}

.page-hero-industries .page-hero-art {
  object-position: right center;
}

.page-hero-coverage .page-hero-art {
  object-position: right bottom;
}

.page-hero-safety .page-hero-art {
  object-position: right center;
}

.article-header {
  padding: 86px 0 42px;
}

.breadcrumbs {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 26px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.breadcrumbs span[aria-current="page"] {
  color: var(--text);
}

.article-header h1 {
  max-width: 930px;
  font-size: clamp(42px, 6vw, 70px);
}

.article-hero-image {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  aspect-ratio: 16 / 9;
}

.article-hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-body {
  width: min(820px, calc(100% - 64px));
  margin: 64px auto 96px;
  color: #d4d8de;
  font-size: 19px;
  line-height: 1.75;
}

.article-body p + p {
  margin-top: 24px;
}

.article-body h2 {
  margin-top: 48px;
  margin-bottom: 18px;
  font-size: 32px;
  line-height: 1.1;
}

.article-body ul {
  display: grid;
  gap: 14px;
  margin: 24px 0;
  padding-left: 22px;
}

.article-body li {
  padding-left: 8px;
}

.article-pagination {
  display: flex;
  width: min(820px, calc(100% - 64px));
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin: 0 auto 78px;
}

.article-nav {
  flex: 0 1 320px;
  flex-direction: column;
  width: fit-content;
  min-height: 0;
  align-items: flex-start;
  justify-content: flex-start;
  gap: 0;
  padding: 12px 18px;
  text-align: left;
}

.article-nav span,
.article-nav strong {
  display: block;
  width: 100%;
}

.article-nav span {
  color: rgba(255, 255, 255, 0.72);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.article-nav strong {
  margin-top: 8px;
  font-size: 14px;
  font-weight: 900;
  line-height: 1.3;
}

.article-nav-prev {
  align-items: flex-start;
  text-align: left;
}

.article-nav-next {
  align-items: flex-end;
  text-align: right;
}

@keyframes loader-breathe {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.92;
    box-shadow: 0 0 12px rgba(255, 255, 255, 0.04);
  }

  50% {
    transform: scale(1.08);
    opacity: 1;
    box-shadow: 0 0 28px rgba(166, 18, 13, 0.16);
  }
}

@keyframes loader-ring-mid {
  0%,
  100% {
    transform: scale(0.98);
    opacity: 0.45;
  }

  50% {
    transform: scale(1.04);
    opacity: 0.76;
  }
}

@keyframes loader-ring-outer {
  0%,
  100% {
    transform: scale(0.97);
    opacity: 0.34;
  }

  50% {
    transform: scale(1.06);
    opacity: 0.68;
  }
}

@media (max-width: 980px) {
  .container {
    width: min(100% - 36px, var(--max));
  }

  .header-inner {
    min-height: 76px;
  }

  .nav-toggle {
    display: grid;
  }

  .site-nav {
    position: absolute;
    top: 76px;
    right: 18px;
    left: 18px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 18px;
    background: rgba(0, 0, 0, 0.97);
  }

  .site-nav.is-open {
    display: flex;
  }

  .header-actions .phone-link {
    display: none;
  }

  .hero {
    min-height: 690px;
  }

  .hero-content {
    padding-top: 98px;
  }

  .stats,
  .card-grid,
  .card-grid.two,
  .blog-grid,
  .feature-grid,
  .split,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .section-head {
    align-items: start;
    flex-direction: column;
  }

  .diesel-topbar {
    text-align: left;
  }

  .article-pagination {
    flex-direction: column;
  }

  .article-nav-prev {
    align-items: flex-start;
    text-align: left;
  }

  .article-nav-next {
    align-items: flex-end;
    text-align: right;
  }

  .split {
    gap: 42px;
  }

  .site-loader-lockup {
    top: calc(50% - 122px);
  }
}

@media (max-width: 640px) {
  .brand {
    min-width: 0;
  }

  .brand-text strong {
    font-size: 14px;
  }

  .brand-text small {
    font-size: 7px;
  }

  .header-actions .button {
    display: none;
  }

  h1 {
    font-size: 48px;
  }

  h2 {
    font-size: 38px;
  }

  .lead,
  .section-copy p,
  .page-copy p,
  .article-deck {
    font-size: 17px;
  }

  .hero-meta {
    gap: 12px;
  }

  .section {
    padding: 72px 0;
  }

  .diesel-shell {
    padding: 22px 18px;
  }

  .stats {
    gap: 24px;
  }

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

  .footer-tagline {
    font-size: 10px;
  }

  .page-hero {
    min-height: 540px;
  }

  .page-hero-contained .page-hero-art {
    object-position: center bottom;
  }

  .article-body {
    width: min(100% - 36px, 820px);
    font-size: 17px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-loader,
  .site-loader * {
    animation: none !important;
    transition-duration: 0.01ms !important;
  }
}