:root {
  --bg: #1a1c1b;
  --bg-elevated: #232624;
  --bg-soft: #2c312e;
  --ink: #f2efe8;
  --muted: #b7b3a8;
  --line: rgba(242, 239, 232, 0.12);
  --accent: #c4a35a;
  --accent-strong: #dbb45f;
  --accent-dim: rgba(196, 163, 90, 0.16);
  --concrete: #8d918a;
  --steel: #5f6a63;
  --danger-soft: #3a2f24;
  --radius: 18px;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  --font: "Vazirmatn", sans-serif;
  --display: "Syne", "Vazirmatn", sans-serif;
  --container: 1120px;
  --header-h: 78px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(1200px 700px at 90% -10%, rgba(196, 163, 90, 0.12), transparent 55%),
    radial-gradient(900px 600px at 0% 20%, rgba(95, 106, 99, 0.28), transparent 50%),
    linear-gradient(180deg, #151716 0%, var(--bg) 40%, #121413 100%);
  line-height: 1.85;
  overflow-x: hidden;
}

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.045;
  z-index: 1;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.container {
  width: min(var(--container), calc(100% - 2.5rem));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(18, 20, 19, 0.72);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(18, 20, 19, 0.9);
}

.header-inner {
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 2;
}

.brand-mark {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 0.7rem;
  background:
    linear-gradient(145deg, var(--accent-strong), #8a7040 55%, #3d4540);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.18);
  position: relative;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 28% 22% 22% 28%;
  border: 2px solid rgba(255, 255, 255, 0.7);
  border-radius: 0.25rem;
  transform: skewX(-12deg);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-text strong {
  font-size: 1.05rem;
  font-weight: 700;
}

.brand-text small {
  font-family: var(--display);
  letter-spacing: 0.12em;
  font-size: 0.68rem;
  color: var(--muted);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.35rem;
  margin-inline-start: auto;
}

.nav a {
  color: var(--muted);
  font-size: 0.95rem;
  transition: color 0.25s ease;
}

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

.header-cta {
  margin-inline-start: 0.5rem;
}

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  gap: 0.35rem;
  flex-direction: column;
  margin-inline-start: auto;
}

.nav-toggle span {
  display: block;
  width: 1.25rem;
  height: 2px;
  background: var(--ink);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.85rem;
  padding: 0.7rem 1.25rem;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-strong), #a8883f);
  color: #1a160f;
  font-weight: 700;
  box-shadow: 0 10px 30px rgba(196, 163, 90, 0.25);
}

.btn-ghost {
  border-color: var(--line);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.03);
}

.btn-ghost:hover {
  border-color: rgba(196, 163, 90, 0.45);
}

.btn-lg {
  min-height: 3.35rem;
  padding-inline: 1.6rem;
  font-size: 1.05rem;
}

.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  display: grid;
  align-items: end;
  padding: 4.5rem 0 5rem;
  overflow: hidden;
}

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

.hero-gradient {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(18, 20, 19, 0.2) 0%, rgba(18, 20, 19, 0.55) 48%, rgba(18, 20, 19, 0.96) 100%),
    linear-gradient(110deg, rgba(61, 69, 64, 0.55), transparent 45%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='1600' height='900' viewBox='0 0 1600 900'%3E%3Cdefs%3E%3ClinearGradient id='g' x1='0' y1='0' x2='1' y2='1'%3E%3Cstop stop-color='%23282d2a'/%3E%3Cstop offset='1' stop-color='%23171a18'/%3E%3C/linearGradient%3E%3C/defs%3E%3Crect width='1600' height='900' fill='url(%23g)'/%3E%3Cg fill='none' stroke='%23c4a35a' stroke-opacity='0.18' stroke-width='2'%3E%3Cpath d='M0 680 L420 420 L760 610 L1120 280 L1600 520'/%3E%3Cpath d='M0 760 L380 520 L740 690 L1100 360 L1600 600'/%3E%3C/g%3E%3Cg fill='%23c4a35a' fill-opacity='0.12'%3E%3Ccircle cx='1180' cy='220' r='120'/%3E%3Ccircle cx='320' cy='240' r='70'/%3E%3C/g%3E%3C/svg%3E") center/cover no-repeat;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 80%);
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(10px);
  animation: float 9s ease-in-out infinite;
}

.hero-orb-a {
  width: 280px;
  height: 280px;
  right: 8%;
  top: 18%;
  background: radial-gradient(circle, rgba(196, 163, 90, 0.28), transparent 70%);
}

.hero-orb-b {
  width: 220px;
  height: 220px;
  left: 10%;
  bottom: 18%;
  background: radial-gradient(circle, rgba(95, 106, 99, 0.45), transparent 70%);
  animation-delay: -3s;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
  padding-bottom: 1rem;
}

.hero-brand {
  font-family: var(--display);
  font-size: clamp(2.8rem, 8vw, 5.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  margin: 0 0 1rem;
  background: linear-gradient(120deg, #fff6df 10%, var(--accent-strong) 45%, #8d918a 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  font-weight: 700;
  line-height: 1.35;
}

.hero-lead {
  margin: 0 0 1.75rem;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 42rem;
}

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

.hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 1.4rem;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.45rem;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  z-index: 2;
}

.scroll-line {
  width: 1px;
  height: 42px;
  background: linear-gradient(180deg, var(--accent), transparent);
  animation: pulse 2s ease-in-out infinite;
}

.section {
  padding: 6rem 0;
  position: relative;
  z-index: 2;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 0.85rem;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.section h2,
.panel-body h3,
.service-item h3,
.why-list strong,
.site-footer h3,
.process-list strong {
  line-height: 1.4;
}

.section h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  font-weight: 800;
}

.section-lead,
.about-copy p,
.panel-body p,
.service-item p,
.why p,
.cta-inner p,
.site-footer p {
  color: var(--muted);
}

.section-head {
  max-width: 44rem;
  margin-bottom: 2.5rem;
}

.about-grid,
.why-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2.5rem;
  align-items: start;
}

.about-panel {
  display: grid;
  gap: 0.9rem;
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  background:
    linear-gradient(160deg, rgba(196, 163, 90, 0.08), transparent 40%),
    rgba(255, 255, 255, 0.02);
  box-shadow: var(--shadow);
}

.stat {
  padding: 1rem 1.1rem;
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.18);
  border: 1px solid var(--line);
}

.stat strong {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 1.05rem;
}

.stat span {
  color: var(--muted);
  font-size: 0.92rem;
}

.stat.highlight {
  background: linear-gradient(135deg, rgba(196, 163, 90, 0.22), rgba(196, 163, 90, 0.05));
  border-color: rgba(196, 163, 90, 0.35);
}

.stat.highlight strong {
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  color: var(--accent-strong);
}

.product-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 1.5rem;
}

.tab {
  padding: 0.7rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.02);
  transition: all 0.25s ease;
}

.tab:hover {
  color: var(--ink);
}

.tab.is-active {
  color: #1a160f;
  background: var(--accent);
  border-color: var(--accent);
  font-weight: 700;
}

.product-panel {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 1.5rem;
  min-height: 360px;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 6px);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.02);
}

.panel-visual {
  min-height: 280px;
  background-size: cover;
  background-position: center;
  position: relative;
}

.panel-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(18, 20, 19, 0.28));
}

.spacer-visual {
  background-image:
    linear-gradient(160deg, rgba(196, 163, 90, 0.28), rgba(18, 20, 19, 0.45)),
    radial-gradient(circle at 30% 30%, #6d736c, #2a2f2c 60%);
}

.additive-visual {
  background-image:
    linear-gradient(160deg, rgba(95, 106, 99, 0.35), rgba(18, 20, 19, 0.5)),
    radial-gradient(circle at 70% 40%, #8a7450, #242826 62%);
}

.water-visual {
  background-image:
    linear-gradient(160deg, rgba(90, 140, 160, 0.28), rgba(18, 20, 19, 0.55)),
    radial-gradient(circle at 40% 60%, #4d6670, #1f2628 65%);
}

.chem-visual {
  background-image:
    linear-gradient(160deg, rgba(160, 110, 70, 0.28), rgba(18, 20, 19, 0.5)),
    radial-gradient(circle at 50% 30%, #705640, #241f1b 60%);
}

.material-visual {
  background-image:
    linear-gradient(160deg, rgba(141, 145, 138, 0.3), rgba(18, 20, 19, 0.55)),
    radial-gradient(circle at 60% 50%, #5a615b, #1d211f 65%);
}

.panel-body {
  padding: 1.6rem 1.6rem 1.6rem 0.4rem;
}

.panel-body h3 {
  margin: 0 0 0.9rem;
  font-size: 1.4rem;
}

.panel-body ul {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.55rem;
}

.panel-body li {
  position: relative;
  padding-inline-start: 1.2rem;
  color: var(--ink);
}

.panel-body li::before {
  content: "";
  position: absolute;
  right: 0;
  top: 0.75rem;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--accent);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.service-item {
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.service-item:hover {
  border-color: rgba(196, 163, 90, 0.4);
  transform: translateY(-4px);
}

.service-item h3 {
  margin: 0 0 0.6rem;
  font-size: 1.15rem;
}

.service-item p {
  margin: 0;
}

.why-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.why-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 1rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.18);
}

.why-list span {
  font-family: var(--display);
  color: var(--accent);
  font-weight: 700;
  font-size: 1.1rem;
}

.why-list strong {
  display: block;
  margin-bottom: 0.25rem;
}

.why-list p {
  margin: 0;
  color: var(--muted);
}

.process-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.9rem;
  counter-reset: step;
}

.process-list li {
  position: relative;
  padding: 1.4rem 1.2rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  overflow: hidden;
}

.process-list li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0.8rem;
  top: 0.5rem;
  font-family: var(--display);
  font-size: 2.4rem;
  font-weight: 800;
  color: rgba(196, 163, 90, 0.18);
}

.process-list strong {
  display: block;
  margin-bottom: 0.45rem;
}

.process-list p {
  margin: 0;
  color: var(--muted);
}

.cta-band {
  padding-top: 2rem;
}

.cta-inner {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 1.5rem;
  align-items: center;
  padding: 2.2rem;
  border-radius: calc(var(--radius) + 8px);
  border: 1px solid rgba(196, 163, 90, 0.28);
  background:
    radial-gradient(600px 240px at 100% 0%, rgba(196, 163, 90, 0.18), transparent 60%),
    linear-gradient(145deg, #2a2f2c, #1a1d1b);
  box-shadow: var(--shadow);
}

.cta-actions {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  align-items: stretch;
}

.site-footer {
  position: relative;
  z-index: 2;
  padding: 3.5rem 0 1.5rem;
  border-top: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.25);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.9fr 0.9fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.footer-brand {
  margin-bottom: 0.9rem;
}

.site-footer h3 {
  margin: 0 0 0.8rem;
  font-size: 1rem;
}

.site-footer a,
.site-footer p {
  display: block;
  margin: 0 0 0.45rem;
  color: var(--muted);
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.demo-note {
  color: var(--accent) !important;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

.delay-1 { transition-delay: 0.08s; }
.delay-2 { transition-delay: 0.16s; }
.delay-3 { transition-delay: 0.24s; }
.delay-4 { transition-delay: 0.32s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-18px); }
}

@keyframes pulse {
  0%, 100% { opacity: 0.35; transform: scaleY(0.85); }
  50% { opacity: 1; transform: scaleY(1); }
}

@media (max-width: 960px) {
  .about-grid,
  .why-grid,
  .product-panel,
  .cta-inner,
  .footer-grid,
  .process-list,
  .service-grid {
    grid-template-columns: 1fr;
  }

  .panel-body {
    padding: 1.3rem;
  }

  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1rem;
    background: rgba(16, 18, 17, 0.96);
    border-bottom: 1px solid var(--line);
  }

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

  .nav a {
    padding: 0.85rem 0.4rem;
    border-bottom: 1px solid var(--line);
  }

  .header-cta {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .hero {
    align-items: center;
    padding-top: 3rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal,
  .hero-orb,
  .scroll-line,
  .btn,
  .service-item {
    animation: none !important;
    transition: none !important;
    transform: none !important;
    opacity: 1 !important;
  }
}