:root {
  --dark: #242841;
  --dark-2: #161a2b;
  --dark-3: #0b0d15;
  --lime: #ccff2e;
  --white: #ffffff;
  --ink: #f4f6fb;
  --muted: rgba(244, 246, 251, 0.68);
  --muted-2: rgba(244, 246, 251, 0.48);
  --panel: rgba(255, 255, 255, 0.055);
  --panel-strong: rgba(255, 255, 255, 0.09);
  --line: rgba(255, 255, 255, 0.14);
  --line-strong: rgba(204, 255, 46, 0.38);
  --shadow: 0 34px 90px rgba(0, 0, 0, 0.34);
  --container: min(1240px, calc(100% - 48px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 74% 8%, rgba(204, 255, 46, 0.11), transparent 26%),
    linear-gradient(180deg, var(--dark-3), #05060a 54%, #080a11);
  font-family: "Golos Text", "Inter", Arial, sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.8), transparent 76%);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

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

p {
  line-height: 1.62;
}

.site-header {
  position: fixed;
  top: 18px;
  left: 50%;
  z-index: 30;
  width: var(--container);
  min-height: 74px;
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 28px;
  padding: 14px 16px 14px 22px;
  color: var(--white);
  background: rgba(11, 13, 21, 0.68);
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 18px 56px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(22px);
  transform: translateX(-50%);
  transition: background 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.site-header.is-scrolled {
  background: rgba(11, 13, 21, 0.9);
  border-color: rgba(204, 255, 46, 0.28);
}

.brand {
  display: grid;
  gap: 2px;
  min-width: 180px;
}

.brand-name {
  font-size: 28px;
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: 0;
}

.brand-subtitle {
  color: var(--muted-2);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1.7px;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  justify-content: center;
  gap: clamp(18px, 2.5vw, 38px);
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.main-nav a {
  position: relative;
  padding: 12px 0;
}

.main-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 4px;
  left: 0;
  height: 2px;
  background: var(--lime);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--white);
}

.main-nav a:hover::after,
.main-nav a:focus-visible::after {
  transform: scaleX(1);
}

.header-cta,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  font-weight: 900;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.header-cta {
  min-height: 46px;
  padding: 0 22px;
  color: var(--dark);
  background: var(--lime);
}

.btn {
  min-height: 58px;
  padding: 0 28px;
}

.btn:hover,
.btn:focus-visible,
.header-cta:hover,
.header-cta:focus-visible {
  transform: translateY(-2px);
}

.btn-accent {
  color: var(--dark);
  background: var(--lime);
  box-shadow: 0 18px 48px rgba(204, 255, 46, 0.18);
}

.btn-outline {
  color: var(--white);
  background: rgba(255, 255, 255, 0.045);
  border-color: rgba(255, 255, 255, 0.28);
}

.btn-outline:hover,
.btn-outline:focus-visible {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.075);
}

.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  color: var(--white);
  background: rgba(255, 255, 255, 0.04);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
}

.section,
.audience-strip,
.site-footer {
  width: var(--container);
  margin: 0 auto;
}

.hero {
  position: relative;
  min-height: 980px;
  display: grid;
  align-items: end;
  padding: 168px 0 88px;
  overflow: hidden;
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(5, 6, 10, 0.98) 0%, rgba(11, 13, 21, 0.88) 36%, rgba(36, 40, 65, 0.22) 66%, rgba(5, 6, 10, 0.5) 100%),
    radial-gradient(circle at 76% 50%, rgba(204, 255, 46, 0.12), transparent 24%),
    linear-gradient(180deg, rgba(5, 6, 10, 0.12), rgba(5, 6, 10, 0.96) 92%);
}

.hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: -1;
  height: 36%;
  background: linear-gradient(180deg, transparent, #05060a 82%);
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
  background: url("assets/hero-dongfeng-trucks.jpg") center right / cover no-repeat;
  filter: saturate(0.78) contrast(1.12) brightness(0.72);
  transform: scale(1.02);
}

.hero-grid {
  width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(320px, 0.48fr);
  align-items: end;
  gap: clamp(36px, 6vw, 96px);
}

.eyebrow {
  margin-bottom: 18px;
  color: var(--lime);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 1.7px;
  text-transform: uppercase;
}

h1 {
  max-width: 890px;
  margin-bottom: 28px;
  font-size: clamp(52px, 7.1vw, 104px);
  line-height: 0.93;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 720px;
  color: rgba(244, 246, 251, 0.76);
  font-size: clamp(18px, 1.6vw, 23px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hero-badges span {
  padding: 9px 13px;
  border: 1px solid var(--line);
  color: rgba(244, 246, 251, 0.82);
  background: rgba(255, 255, 255, 0.045);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.hero-facts {
  display: grid;
  gap: 14px;
}

.hero-facts article {
  padding: 26px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.hero-facts strong {
  display: block;
  color: var(--lime);
  font-size: 48px;
  line-height: 1;
}

.hero-facts span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 700;
}

.audience-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: -42px;
  position: relative;
  z-index: 4;
}

.audience-strip article,
.product-card,
.workflow-card,
.quality-list article,
.request-form {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.095), rgba(255, 255, 255, 0.025)),
    rgba(36, 40, 65, 0.58);
  border: 1px solid var(--line);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.28);
}

.audience-strip article {
  min-height: 240px;
  padding: 28px;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.audience-strip article:hover {
  transform: translateY(-6px);
  border-color: var(--line-strong);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.13), rgba(255, 255, 255, 0.035)),
    rgba(36, 40, 65, 0.74);
}

.audience-strip span,
.workflow-card span,
.card-index {
  display: inline-grid;
  place-items: center;
  min-width: 52px;
  height: 38px;
  color: var(--dark);
  background: var(--lime);
  font-weight: 900;
}

.audience-strip h2 {
  margin: 28px 0 14px;
  font-size: 26px;
}

.audience-strip p,
.section-head p,
.product-card p,
.product-card li,
.workflow-card p,
.quality-copy p,
.quality-list span,
.contact-copy p,
.form-head p {
  color: var(--muted);
}

.section {
  padding: clamp(92px, 10vw, 150px) 0;
}

.section-panel {
  background:
    linear-gradient(90deg, rgba(204, 255, 46, 0.05) 1px, transparent 1px),
    linear-gradient(rgba(204, 255, 46, 0.035) 1px, transparent 1px),
    var(--dark);
  background-size: 64px 64px;
}

.section-head {
  display: grid;
  gap: 16px;
  margin-bottom: clamp(42px, 6vw, 74px);
}

.section-head h2,
.contact-copy h2,
.quality-copy h2 {
  max-width: 900px;
  margin-bottom: 0;
  font-size: clamp(38px, 5.5vw, 72px);
  line-height: 0.98;
}

.section-head p:not(.eyebrow) {
  max-width: 700px;
  font-size: 18px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 18px;
}

.product-card {
  position: relative;
  grid-column: span 4;
  min-height: 370px;
  padding: 30px;
  overflow: hidden;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.product-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(204, 255, 46, 0.16), transparent 34%),
    linear-gradient(135deg, transparent 68%, rgba(204, 255, 46, 0.08));
  opacity: 0;
  transition: opacity 0.22s ease;
}

.product-card:hover {
  transform: translateY(-8px);
  border-color: var(--line-strong);
  box-shadow: 0 38px 100px rgba(0, 0, 0, 0.42);
}

.product-card:hover::before {
  opacity: 1;
}

.product-card-wide {
  grid-column: span 8;
}

.product-top,
.product-card h3,
.product-card p,
.product-card ul,
.product-card a {
  position: relative;
  z-index: 1;
}

.product-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 40px;
}

.product-icon {
  position: relative;
  width: 72px;
  height: 72px;
  border: 2px solid rgba(255, 255, 255, 0.72);
  background:
    linear-gradient(90deg, rgba(204, 255, 46, 0.11) 1px, transparent 1px),
    linear-gradient(rgba(204, 255, 46, 0.09) 1px, transparent 1px),
    rgba(255, 255, 255, 0.04);
  background-size: 12px 12px;
}

.filter-icon::before,
.disc-icon::before,
.pad-icon::before,
.lining-icon::before,
.kit-icon::before {
  content: "";
  position: absolute;
  inset: 15px;
  border: 4px solid var(--lime);
}

.filter-icon::before,
.disc-icon,
.disc-icon::before {
  border-radius: 50%;
}

.disc-icon::after {
  content: "";
  position: absolute;
  inset: 28px;
  border-radius: 50%;
  background: var(--lime);
}

.pad-icon {
  border-radius: 30px 8px 8px 30px;
}

.lining-icon::before {
  border-radius: 42px 42px 8px 8px;
}

.kit-icon::before {
  transform: rotate(45deg);
}

.product-card h3 {
  margin-bottom: 16px;
  font-size: clamp(28px, 2.8vw, 42px);
  line-height: 1;
}

.product-card ul {
  display: grid;
  gap: 8px;
  margin: 26px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  list-style: none;
}

.product-card li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
}

.product-card li::before {
  content: "";
  position: absolute;
  top: 8px;
  left: 0;
  width: 7px;
  height: 7px;
  background: var(--lime);
}

.product-card a {
  display: inline-flex;
  margin-top: 28px;
  color: var(--white);
  font-size: 14px;
  font-weight: 900;
}

.product-card a::after {
  content: "";
  width: 7px;
  height: 7px;
  margin: 7px 0 0 12px;
  border-top: 2px solid var(--lime);
  border-right: 2px solid var(--lime);
  transform: rotate(45deg);
}

.platforms {
  width: 100%;
  padding-right: max(24px, calc((100vw - 1240px) / 2));
  padding-left: max(24px, calc((100vw - 1240px) / 2));
}

.brand-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
}

.brand-grid span {
  position: relative;
  min-height: 90px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.045);
  color: rgba(244, 246, 251, 0.86);
  font-size: clamp(18px, 2vw, 28px);
  font-weight: 900;
  transition: transform 0.2s ease, color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.brand-grid span::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--lime);
  transform: scaleX(0.35);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.brand-grid span:hover {
  color: var(--lime);
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.075);
  transform: translateY(-4px);
}

.brand-grid span:hover::before {
  transform: scaleX(1);
}

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

.workflow-card {
  min-height: 270px;
  padding: 32px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.workflow-card:hover {
  transform: translateY(-6px);
  border-color: var(--line-strong);
}

.workflow-card h3 {
  margin: 38px 0 14px;
  font-size: 30px;
}

.quality {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.75fr);
  gap: clamp(38px, 7vw, 100px);
  padding-right: max(24px, calc((100vw - 1240px) / 2));
  padding-left: max(24px, calc((100vw - 1240px) / 2));
}

.quality-copy p {
  max-width: 720px;
  font-size: 18px;
}

.quality-list {
  display: grid;
  gap: 14px;
}

.quality-list article {
  display: grid;
  grid-template-columns: 88px 1fr;
  align-items: center;
  gap: 22px;
  padding: 24px;
}

.quality-list strong {
  display: grid;
  place-items: center;
  height: 54px;
  color: var(--dark);
  background: var(--lime);
  font-size: 18px;
}

.contacts {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 0.72fr);
  gap: clamp(38px, 8vw, 108px);
  align-items: start;
}

.contact-copy {
  position: sticky;
  top: 130px;
}

.contact-copy p {
  max-width: 640px;
  font-size: 18px;
}

.contact-lines {
  display: grid;
  gap: 10px;
  margin-top: 34px;
  color: var(--white);
  font-weight: 900;
}

.request-form {
  display: grid;
  gap: 18px;
  padding: clamp(26px, 4vw, 42px);
  border-color: var(--line-strong);
}

.form-head {
  display: grid;
  gap: 10px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.form-head span {
  color: var(--lime);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 1.6px;
  text-transform: uppercase;
}

.form-head strong {
  font-size: clamp(24px, 2.8vw, 36px);
  line-height: 1.05;
}

.form-head p {
  margin: 0;
  font-size: 15px;
}

.request-form label {
  display: grid;
  gap: 9px;
  color: var(--white);
  font-size: 14px;
  font-weight: 900;
}

input,
select,
textarea {
  width: 100%;
  min-height: 54px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 13px 15px;
  color: var(--white);
  background: rgba(255, 255, 255, 0.075);
}

textarea {
  resize: vertical;
}

input::placeholder,
textarea::placeholder {
  color: rgba(244, 246, 251, 0.42);
}

select option {
  color: #161a2b;
}

input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.request-form .btn {
  width: 100%;
  min-height: 62px;
  margin-top: 6px;
}

.form-status {
  min-height: 24px;
  margin: 0;
  color: var(--lime);
  font-weight: 800;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 42px 0 56px;
  border-top: 1px solid var(--line);
  color: rgba(244, 246, 251, 0.56);
}

.site-footer div {
  display: grid;
  gap: 6px;
}

.site-footer strong {
  color: var(--white);
  font-size: 24px;
}

.site-footer a {
  color: rgba(244, 246, 251, 0.74);
  font-weight: 800;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--lime);
}

.site-footer small {
  color: rgba(244, 246, 251, 0.4);
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 1100px) {
  :root {
    --container: min(100% - 36px, 940px);
  }

  .site-header {
    grid-template-columns: auto 1fr auto;
  }

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

  .nav-toggle {
    display: block;
    justify-self: end;
  }

  .site-header.is-open .main-nav {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    left: 0;
    display: grid;
    gap: 0;
    padding: 10px;
    background: rgba(11, 13, 21, 0.96);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
  }

  .site-header.is-open .main-nav a {
    padding: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .site-header.is-open .main-nav a:last-child {
    border-bottom: 0;
  }

  .hero {
    min-height: auto;
    padding-top: 142px;
  }

  .hero-grid,
  .quality,
  .contacts {
    grid-template-columns: 1fr;
  }

  .hero-facts {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .product-card,
  .product-card-wide {
    grid-column: span 6;
  }

  .brand-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .contact-copy {
    position: static;
  }
}

@media (max-width: 680px) {
  :root {
    --container: calc(100% - 32px);
  }

  .site-header {
    top: 10px;
    min-height: 64px;
    padding: 10px 12px 10px 16px;
  }

  .brand {
    min-width: 0;
  }

  .brand-name {
    font-size: 24px;
  }

  .brand-subtitle {
    display: none;
  }

  .hero {
    padding-top: 116px;
    padding-bottom: 54px;
  }

  .hero-media {
    background-position: 62% center;
  }

  h1 {
    font-size: 44px;
  }

  .hero-actions,
  .hero-facts,
  .audience-strip,
  .workflow-grid,
  .brand-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    display: grid;
  }

  .btn {
    width: 100%;
  }

  .audience-strip {
    margin-top: 0;
  }

  .section {
    padding: 70px 0;
  }

  .section-head h2,
  .contact-copy h2,
  .quality-copy h2 {
    font-size: 38px;
  }

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

  .product-card,
  .product-card-wide {
    grid-column: auto;
    min-height: auto;
    padding: 24px;
  }

  .quality-list article {
    grid-template-columns: 1fr;
  }
}