:root {
  --bg: #eef2f6;
  --bg-elevated: #f7f9fc;
  --ink: #15202b;
  --ink-soft: #4a5968;
  --line: #c8d2dc;
  --accent: #0b6e7a;
  --accent-deep: #08545d;
  --steel: #5a6f82;
  --hero-overlay: linear-gradient(
    105deg,
    rgba(238, 242, 246, 0.96) 0%,
    rgba(238, 242, 246, 0.88) 42%,
    rgba(238, 242, 246, 0.35) 68%,
    rgba(238, 242, 246, 0.12) 100%
  );
  --font-display: "Exo 2", sans-serif;
  --font-body: "Onest", sans-serif;
  --space: clamp(1.25rem, 3vw, 2.5rem);
  --max: 1120px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--ink);
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(11, 110, 122, 0.08), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 20%, rgba(90, 111, 130, 0.1), transparent 50%),
    var(--bg);
  overflow-x: hidden;
}

.page-grid {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(90, 111, 130, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(90, 111, 130, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.55), transparent 85%);
}

.site-header,
main,
.site-footer {
  position: relative;
  z-index: 1;
}

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

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

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.25rem var(--space);
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.logo span {
  color: var(--accent);
}

.nav {
  display: flex;
  gap: 1.75rem;
}

.nav a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color 0.25s var(--ease);
}

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

.header-phone {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  color: var(--ink);
  white-space: nowrap;
}

.header-phone:hover {
  color: var(--accent);
}

/* —— Hero: one composition, brand-first, full-bleed visual —— */
.hero {
  position: relative;
  min-height: min(100vh, 820px);
  display: grid;
  align-items: end;
  isolation: isolate;
}

.hero-visual {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    var(--hero-overlay),
    url("https://images.unsplash.com/photo-1565043589221-1a6fd9ae45c7?auto=format&fit=crop&w=2000&q=80")
      center / cover no-repeat;
  transform: scale(1.04);
  animation: hero-settle 1.6s var(--ease) both;
}

.hero-content {
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
  padding: clamp(4rem, 12vh, 7rem) var(--space) clamp(3rem, 8vh, 5rem);
}

.brand {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 7vw, 4.75rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--ink);
  animation: rise 0.9s var(--ease) 0.15s both;
}

.hero h1 {
  margin: 0 0 1rem;
  max-width: 18ch;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.8vw, 1.85rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink);
  animation: rise 0.9s var(--ease) 0.28s both;
}

.hero-lead {
  margin: 0 0 2rem;
  max-width: 36ch;
  font-size: 1.05rem;
  color: var(--ink-soft);
  animation: rise 0.9s var(--ease) 0.4s both;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  animation: rise 0.9s var(--ease) 0.52s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.75rem 1.4rem;
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  border: 1px solid transparent;
  transition: background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent);
  color: #f4fafb;
}

.btn-primary:hover {
  background: var(--accent-deep);
}

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

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* —— Sections —— */
.section {
  padding: clamp(4rem, 10vw, 6.5rem) 0;
}

.section-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--space);
}

.eyebrow {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.section h2 {
  margin: 0 0 1rem;
  max-width: 18ch;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.55rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.section-text {
  margin: 0;
  max-width: 52ch;
  color: var(--ink-soft);
}

.about {
  border-top: 1px solid var(--line);
}

.about .section-text {
  margin-top: 1.25rem;
  font-size: 1.12rem;
}

.equipment .section-text {
  margin-bottom: 2.75rem;
}

.equip-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.equip-list li {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 1.25rem;
  align-items: start;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.equip-list li.is-visible {
  opacity: 1;
  transform: none;
}

.equip-code {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--steel);
  padding-top: 0.2rem;
}

.equip-list h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
}

.equip-list p {
  margin: 0;
  max-width: 48ch;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.advantages {
  background: linear-gradient(180deg, transparent, rgba(11, 110, 122, 0.05) 40%, transparent);
}

.adv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 4vw, 2.75rem);
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.adv-grid article {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.adv-grid article.is-visible {
  opacity: 1;
  transform: none;
}

.adv-grid h3 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
}

.adv-grid p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.contact {
  border-top: 1px solid var(--line);
}

.contact-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: clamp(2rem, 6vw, 4rem);
  align-items: end;
}

.contact-details {
  display: grid;
  gap: 1.25rem;
}

.contact-link {
  display: grid;
  gap: 0.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
  transition: color 0.25s var(--ease);
}

.contact-link:hover {
  color: var(--accent);
}

.contact-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel);
}

.contact-value {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.5vw, 1.65rem);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.site-footer {
  display: grid;
  gap: 0.35rem;
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem var(--space) 3rem;
  border-top: 1px solid var(--line);
}

.footer-brand {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.footer-meta,
.footer-copy {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes hero-settle {
  from {
    transform: scale(1.08);
    filter: saturate(0.85);
  }
  to {
    transform: scale(1.04);
    filter: none;
  }
}

@media (max-width: 900px) {
  .nav {
    display: none;
  }

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

  .hero {
    min-height: min(100svh, 720px);
  }

  .hero-visual {
    background:
      linear-gradient(
        180deg,
        rgba(238, 242, 246, 0.55) 0%,
        rgba(238, 242, 246, 0.92) 58%,
        rgba(238, 242, 246, 0.98) 100%
      ),
      url("https://images.unsplash.com/photo-1565043589221-1a6fd9ae45c7?auto=format&fit=crop&w=1400&q=80")
        center / cover no-repeat;
  }
}

@media (max-width: 560px) {
  .site-header {
    flex-wrap: wrap;
    gap: 0.75rem;
  }

  .header-phone {
    font-size: 0.88rem;
  }

  .equip-list li {
    grid-template-columns: 3rem 1fr;
    gap: 0.85rem;
  }

  .hero-actions {
    width: 100%;
  }

  .btn {
    flex: 1 1 auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .equip-list li,
  .adv-grid article {
    opacity: 1;
    transform: none;
  }

  .hero-visual {
    transform: none;
  }
}