:root {
  --ink: #071629;
  --navy: #0a2b57;
  --blue: #1456a0;
  --cyan: #15aee5;
  --red: #d84b3e;
  --paper: #f3f7fa;
  --muted: #617181;
  --line: #d8e2e9;
  --white: #ffffff;
  --shadow: 0 20px 56px rgba(7, 22, 41, 0.12);
  --page: min(1180px, calc(100% - 40px));
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 94px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Arial, "Microsoft YaHei", "PingFang SC", Helvetica, sans-serif;
  line-height: 1.55;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; }
button, summary { cursor: pointer; }
h1, h2, h3, p { margin-top: 0; }

.site-header {
  position: fixed;
  z-index: 50;
  inset: 0 0 auto;
  display: flex;
  height: 82px;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 0 max(20px, calc((100vw - 1180px) / 2));
  color: var(--ink);
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid rgba(216, 226, 233, 0.72);
  backdrop-filter: blur(14px);
  transition: box-shadow 0.2s ease;
}

.site-header.is-scrolled { box-shadow: 0 12px 36px rgba(7, 22, 41, 0.1); }

.brand {
  display: flex;
  height: 64px;
  align-items: center;
  flex: 0 0 auto;
}

.brand img {
  width: 300px;
  height: 60px;
  object-fit: contain;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2vw, 28px);
  font-size: 14px;
  font-weight: 800;
}

.site-nav a { white-space: nowrap; }
.site-nav a:not(.nav-cta):hover { color: var(--blue); }

.nav-cta {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 10px;
  padding: 5px 6px 5px 14px;
  border: 1px solid rgba(20, 86, 160, 0.28);
  border-radius: 6px;
  color: var(--navy);
  background: transparent;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.nav-cta-icon {
  display: grid;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  color: var(--ink);
  background: var(--cyan);
  font-size: 15px;
  transition: transform 0.2s ease;
}

.nav-cta:hover {
  color: var(--white);
  border-color: var(--navy);
  background: var(--navy);
}

.nav-cta:hover .nav-cta-icon { transform: rotate(45deg); }

.language-switcher {
  display: flex;
  align-items: center;
  gap: 2px;
  padding-left: 12px;
  border-left: 1px solid var(--line);
}

.language-switcher a {
  display: grid;
  min-width: 32px;
  height: 32px;
  place-items: center;
  padding: 0;
  border-radius: 4px;
  color: var(--muted);
  font-size: 11px;
}

.language-switcher a[aria-current="page"] {
  color: var(--navy);
  background: var(--paper);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  background: var(--white);
}

.nav-toggle span {
  display: block;
  width: 19px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
}

.hero {
  position: relative;
  display: flex;
  height: calc(100svh - 46px);
  min-height: 680px;
  max-height: 860px;
  align-items: center;
  overflow: hidden;
  color: var(--white);
  background: var(--navy);
}

.hero-ice-scene,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-ice-scene {
  overflow: hidden;
  background: #073b52;
}

.hero-ice-field,
.hero-ice-surface,
.hero-ice-cracks,
.hero-ice-fx,
.hero-ice-atmosphere,
.hero-ice-controls {
  position: absolute;
  inset: 0;
}

.hero-ice-field {
  z-index: 0;
  background:
    linear-gradient(122deg, rgba(30, 111, 139, 0.82), transparent 52%),
    linear-gradient(180deg, #0b5b76 0%, #073d56 52%, #052c41 100%);
}

.hero-ice-surface,
.hero-ice-cracks,
.hero-ice-fx {
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero-ice-surface { z-index: 2; }
.hero-ice-cracks { z-index: 3; }
.hero-ice-fx { z-index: 4; }

.hero-scene-logo {
  position: absolute;
  z-index: 1;
  isolation: isolate;
  top: 12.5%;
  right: 1.8%;
  width: clamp(400px, 40vw, 600px);
  filter:
    drop-shadow(0 0 6px rgba(242, 252, 255, 0.68))
    drop-shadow(0 16px 24px rgba(2, 26, 40, 0.3));
}

.hero-scene-logo img {
  width: 100%;
  height: auto;
}

.hero-icebreaker {
  position: absolute;
  z-index: 5;
  top: 0;
  left: 0;
  width: clamp(112px, 12vw, 180px);
  height: auto;
  opacity: 1;
  transform: translate3d(-50%, -50%, 0);
  transform-origin: center;
  clip-path: inset(0 0 8% 0);
  filter:
    drop-shadow(0 20px 22px rgba(3, 31, 48, 0.32))
    drop-shadow(0 5px 7px rgba(3, 31, 48, 0.24));
  pointer-events: none;
  user-select: none;
  will-change: transform, left, top, opacity;
}

.hero-ice-atmosphere {
  z-index: 6;
  pointer-events: none;
  background:
    linear-gradient(108deg, rgba(255, 255, 255, 0.13), transparent 26% 68%, rgba(224, 244, 250, 0.16)),
    linear-gradient(180deg, rgba(245, 252, 255, 0.05), transparent 48%, rgba(7, 51, 72, 0.12));
  mix-blend-mode: screen;
}

.hero-ice-controls {
  z-index: 7;
  left: 48%;
  cursor: none;
  touch-action: pan-y;
}

.hero-overlay {
  z-index: 8;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(4, 18, 36, 0.97) 0%, rgba(4, 18, 36, 0.9) 36%, rgba(4, 18, 36, 0.42) 60%, rgba(4, 18, 36, 0.06) 84%, transparent 100%),
    linear-gradient(0deg, rgba(4, 18, 36, 0.78) 0%, rgba(4, 18, 36, 0.26) 31%, transparent 61%);
}

.hero-overlay::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 42%;
  background: linear-gradient(0deg, rgba(7, 22, 41, 0.32), transparent 82%);
  backdrop-filter: blur(4.5px);
  -webkit-mask-image: linear-gradient(0deg, #000 0%, rgba(0, 0, 0, 0.92) 38%, transparent 100%);
  mask-image: linear-gradient(0deg, #000 0%, rgba(0, 0, 0, 0.92) 38%, transparent 100%);
}

.hero-content {
  position: relative;
  z-index: 10;
  width: var(--page);
  margin-inline: auto;
  padding-top: 82px;
  pointer-events: none;
}

.hero-content > * { pointer-events: none; }
.hero-content a,
.hero-content button { pointer-events: auto; }

.eyebrow {
  margin-bottom: 15px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  width: min(700px, 100%);
  margin-bottom: 24px;
  font-size: clamp(44px, 5.4vw, 70px);
  line-height: 0.98;
  letter-spacing: 0;
}

.hero-title-unit { display: inline-block; }
.hero-title-unit:not(:last-child) { margin-right: 0.16em; }

h2 {
  margin-bottom: 18px;
  font-size: clamp(34px, 4.5vw, 58px);
  line-height: 1.02;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  line-height: 1.2;
}

.hero-copy {
  width: min(660px, 100%);
  margin-bottom: 32px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 19px;
}

.hero-actions,
.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-weight: 900;
}

.button-primary {
  color: var(--ink);
  background: var(--cyan);
}

.button-ghost {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.46);
  background: rgba(7, 22, 41, 0.18);
}

.button-dark {
  color: var(--white);
  background: var(--ink);
}

.button-outline {
  color: var(--navy);
  border-color: var(--line);
  background: var(--white);
}

.button:hover,
.nav-cta:hover { transform: translateY(-1px); }

.section { padding: 104px 20px; }

.section-heading,
.spares-layout,
.process-list {
  width: var(--page);
  margin-inline: auto;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(280px, 0.82fr);
  gap: 64px;
  align-items: end;
  margin-bottom: 42px;
}

.section-heading > p,
.lead { color: var(--muted); font-size: 18px; }
.section-heading.compact { margin-bottom: 38px; }

.equipment-selector { width: var(--page); margin-inline: auto; }

.equipment-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.equipment-card {
  position: relative;
  display: grid;
  min-height: 196px;
  align-content: end;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--ink);
  background: var(--white);
  text-align: left;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.equipment-card:hover {
  border-color: rgba(20, 86, 160, 0.45);
  box-shadow: 0 16px 38px rgba(7, 22, 41, 0.09);
  transform: translateY(-2px);
}

.equipment-card.is-active {
  border-color: var(--blue);
  background: var(--paper);
  box-shadow: inset 0 3px 0 var(--cyan);
}

.equipment-card-number {
  position: absolute;
  top: 22px;
  left: 22px;
  color: var(--cyan);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.equipment-card-action {
  position: absolute;
  top: 16px;
  right: 16px;
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--blue);
  font-size: 20px;
  line-height: 1;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.equipment-card.is-active .equipment-card-action {
  color: var(--white);
  border-color: var(--blue);
  background: var(--blue);
  transform: rotate(45deg);
}

.equipment-card strong,
.equipment-card small { display: block; padding-right: 20px; }
.equipment-card strong { color: var(--navy); font-size: 20px; line-height: 1.16; }
.equipment-card small { margin-top: 10px; color: var(--muted); font-size: 13px; }

.equipment-detail {
  position: relative;
  display: grid;
  grid-template-columns: minmax(280px, 1.25fr) minmax(240px, 0.75fr);
  gap: 64px;
  margin-top: 14px;
  padding: 38px 76px 38px 38px;
  border: 1px solid #c9dfe9;
  border-radius: 7px;
  color: var(--ink);
  background: #eaf4f8;
  box-shadow: inset 0 4px 0 var(--cyan), 0 18px 48px rgba(7, 22, 41, 0.1);
  animation: equipment-panel-in 0.24s ease both;
}

.equipment-detail[hidden] { display: none; }
.equipment-detail h3 { margin-bottom: 14px; color: var(--navy); font-size: clamp(28px, 3vw, 42px); }
.equipment-detail p { margin-bottom: 0; color: var(--muted); }

.panel-kicker,
.equipment-detail-brands span {
  display: block;
  margin-bottom: 12px;
  color: var(--cyan);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.equipment-detail-brands {
  align-self: end;
  padding-left: 28px;
  border-left: 1px solid #c9dfe9;
}

.equipment-detail-close {
  position: absolute;
  top: 18px;
  right: 18px;
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(20, 86, 160, 0.28);
  border-radius: 50%;
  color: var(--blue);
  background: rgba(255, 255, 255, 0.56);
  font-size: 22px;
  line-height: 1;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.equipment-detail-close:hover {
  color: var(--white);
  border-color: var(--blue);
  background: var(--blue);
}

@keyframes equipment-panel-in {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}
.text-link {
  color: var(--blue);
  font-weight: 900;
}

.spares {
  color: var(--white);
  background: var(--ink);
}

.spares-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(360px, 1fr);
  gap: 72px;
  align-items: center;
}

.spares .lead { color: rgba(255, 255, 255, 0.7); }
.spares .text-link { display: inline-block; margin-top: 12px; color: var(--cyan); }

.spares-data {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: rgba(255, 255, 255, 0.15);
}

.spares-data article {
  min-height: 260px;
  padding: 30px;
  background: #0d2542;
}

.spares-data span {
  display: block;
  margin-bottom: 34px;
  color: var(--cyan);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.spares-data p { color: rgba(255, 255, 255, 0.66); }

.supply { background: var(--paper); }

.process-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: 0;
  margin-bottom: 0;
  padding: 0;
  background: var(--line);
  list-style: none;
}

.process-list li {
  min-height: 248px;
  padding: 28px;
  background: var(--white);
}

.process-list span {
  display: block;
  margin-bottom: 54px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 900;
}

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

.company-shell { width: var(--page); margin-inline: auto; }

.company-brand-row {
  display: block;
  padding-bottom: 54px;
  border-bottom: 1px solid var(--line);
}

.company-identity img { width: min(460px, 100%); height: auto; }

.company-positioning {
  display: grid;
  grid-template-columns: minmax(300px, 1.08fr) minmax(280px, 0.92fr);
  gap: 76px;
  align-items: start;
  max-width: none;
  margin-top: 38px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.company-positioning > p:last-child { margin-bottom: 0; color: var(--muted); font-size: 17px; }

.company-statement {
  margin-bottom: 0;
  color: var(--muted);
  font-size: clamp(24px, 2.8vw, 36px);
  line-height: 1.12;
}

.company-statement strong { color: var(--navy); }

.company-statement span {
  display: block;
  margin-top: 12px;
}

.company-focus {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-auto-rows: 1fr;
  gap: 16px;
  margin-top: 16px;
}

.company-focus article {
  position: relative;
  min-height: 270px;
  padding: 34px;
  border-radius: 7px;
}

.company-focus-primary { color: var(--white); background: var(--ink); }
.company-focus-secondary { border: 1px solid var(--line); background: var(--paper); }

.company-focus article::before {
  content: "";
  display: block;
  width: 44px;
  height: 3px;
  margin-bottom: 56px;
  background: var(--blue);
}

.company-focus-primary::before { background: var(--cyan); }
.company-focus h3 { margin: 0 0 14px; font-size: clamp(26px, 3vw, 38px); }
.company-focus p:last-child { margin-bottom: 0; color: var(--muted); }
.company-focus-primary p:last-child { color: rgba(255, 255, 255, 0.7); }

.company-facts {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 50px;
  margin: 30px 0 0;
  padding: 24px 0 0;
  border-top: 1px solid var(--line);
}

.company-facts dt { color: var(--blue); font-size: 24px; font-weight: 900; line-height: 1.1; }
.company-facts dd { margin: 5px 0 0; color: var(--muted); font-size: 13px; }

.requisites {
  color: var(--white);
  background: #0a2b57;
}

.requisites-shell {
  display: grid;
  width: var(--page);
  grid-template-columns: minmax(280px, 0.82fr) minmax(360px, 1fr);
  gap: 70px;
  align-items: start;
  margin-inline: auto;
}

.requisites-copy {
  max-width: 560px;
}

.requisites-copy > p:not(.eyebrow) {
  color: rgba(255, 255, 255, 0.72);
  font-size: 18px;
}

.requisites .company-legal {
  margin-top: 0;
}

.company-legal address { color: rgba(255, 255, 255, 0.7); }

.company-legal {
  margin-top: 44px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.045);
}

.company-legal address {
  margin: 0;
  font-style: normal;
}

.company-legal address strong { color: var(--white); }

.company-requisites {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 28px;
  margin: 22px 0 0;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.company-requisites dt {
  color: var(--cyan);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0;
}

.company-requisites dd {
  margin: 5px 0 0;
  color: var(--white);
  font-size: 16px;
  font-weight: 700;
}

.company-requisites a {
  color: inherit;
  text-decoration: none;
}

.footer-links a:not(:first-child) {
  color: var(--blue);
  text-decoration: underline;
  text-decoration-color: rgba(20, 86, 160, 0.3);
  text-underline-offset: 3px;
}

.site-footer {
  display: grid;
  grid-template-columns: 200px 1fr auto;
  gap: 34px;
  align-items: center;
  padding: 32px max(20px, calc((100vw - 1180px) / 2));
  color: var(--muted);
  background: var(--white);
  border-top: 1px solid var(--line);
}

.footer-brand {
  display: grid;
  width: 190px;
  height: 90px;
  place-items: center;
}

.footer-brand img {
  width: 170px;
  max-height: 84px;
  object-fit: contain;
  filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.2));
}

.site-footer p { margin: 0; }
.footer-links {
  display: grid;
  justify-items: end;
  gap: 7px;
  font-size: 12px;
  text-align: right;
}

.footer-links a:first-child {
  margin-bottom: 2px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 900;
}

button:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(21, 174, 229, 0.36);
  outline-offset: 3px;
}

@media (max-width: 1180px) {
  .nav-toggle { display: block; }

  .site-nav {
    position: absolute;
    top: calc(100% + 8px);
    right: 20px;
    display: none;
    width: min(340px, calc(100vw - 40px));
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: var(--white);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 12px; }
  .language-switcher {
    justify-content: flex-start;
    margin-top: 6px;
    padding: 12px 0 6px;
    border-top: 1px solid var(--line);
    border-left: 0;
  }
  .language-switcher a { min-width: 42px; height: 36px; padding: 0; }
  .nav-cta { justify-content: space-between; margin-top: 6px; padding: 6px 6px 6px 14px; }

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

  .section-heading,
  .spares-layout,
  .company-brand-row,
  .requisites-shell { grid-template-columns: 1fr; gap: 36px; }
  .requisites-copy { width: var(--page); margin-inline: auto; }
  .process-list { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  :root { --page: min(100% - 30px, 1180px); }
  html { scroll-padding-top: 78px; }

  .site-header { height: 70px; padding-inline: 15px; }
  .brand { height: 56px; gap: 7px; }
  .brand img { width: 220px; height: 46px; }

  .hero {
    height: calc(100svh - 42px);
    min-height: 620px;
    max-height: 760px;
  }

  .hero-scene-logo {
    top: 70px;
    right: -4px;
    width: 196px;
    filter:
      drop-shadow(0 0 5px rgba(246, 253, 255, 0.82))
      drop-shadow(0 10px 18px rgba(4, 34, 55, 0.22));
  }
  .hero-icebreaker { width: 86px; }
  .hero-ice-controls { left: 54%; }
  .hero-overlay {
    background:
      linear-gradient(90deg, rgba(4, 18, 36, 0.96), rgba(4, 18, 36, 0.72) 68%, rgba(4, 18, 36, 0.38)),
      linear-gradient(0deg, rgba(4, 18, 36, 0.78), rgba(4, 18, 36, 0.18) 52%, transparent 72%);
  }
  .hero-overlay::after {
    height: 38%;
    backdrop-filter: blur(2.4px);
  }
  .hero-content { padding-top: 70px; }
  h1 { font-size: clamp(40px, 12vw, 58px); }
  h2 { font-size: 36px; }
  .hero-copy { font-size: 17px; }

  .section { padding: 76px 15px; }
  .section-heading { display: block; }
  .section-heading > p { font-size: 16px; }

  .equipment-grid { grid-template-columns: 1fr; }
  .equipment-card { min-height: 150px; }
  .equipment-card strong { font-size: 18px; }
  .equipment-detail { grid-template-columns: 1fr; gap: 24px; padding: 30px 54px 30px 24px; }
  .equipment-detail-brands { padding: 20px 0 0; border-top: 1px solid #c9dfe9; border-left: 0; }

  .company-brand-row { padding-bottom: 38px; }
  .company-positioning { grid-template-columns: 1fr; gap: 18px; margin-top: 30px; padding-top: 26px; }
  .company-identity img { width: min(390px, 100%); }
  .company-focus { grid-template-columns: 1fr; }
  .company-focus article { min-height: 0; padding: 28px 24px; }
  .company-focus article::before { margin-bottom: 38px; }
  .company-facts { grid-template-columns: 1fr; gap: 18px; }

  .spares-data,
  .process-list { grid-template-columns: 1fr; }
  .spares-data article { min-height: auto; }
  .process-list li { min-height: 210px; }
  .process-list span { margin-bottom: 34px; }

  .company-legal { padding: 20px; }
  .site-footer { grid-template-columns: 1fr; gap: 18px; }
  .footer-brand { width: 170px; }
  .footer-links { justify-items: start; text-align: left; }
}

@media (max-width: 360px) {
  .brand img { width: 190px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
  .hero-ice-surface { opacity: 0.22; }
  .hero-ice-controls { display: none; }
  .hero-icebreaker { opacity: 1; }
}