:root {
  --navy: #102033;
  --navy-2: #172b44;
  --blue: #2f6f9f;
  --green: #4f8a7b;
  --bg: #f5f7fa;
  --muted: #eef2f5;
  --text: #223044;
  --soft-text: #667487;
  --white: #ffffff;
  --line: #dbe3ea;
  --shadow: 0 18px 45px rgba(16, 32, 51, 0.12);
  --radius: 18px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
}

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

.container {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--navy);
}

.logo-symbol {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--navy);
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}

.logo-line {
  position: absolute;
  width: 28px;
  height: 3px;
  background: var(--white);
  border-radius: 999px;
  left: 8px;
}

.logo-line.top {
  top: 13px;
  transform: rotate(0deg);
}

.logo-line.mid {
  top: 21px;
  transform: rotate(-28deg);
  background: var(--green);
}

.logo-line.bottom {
  top: 29px;
  transform: rotate(0deg);
}

.logo-wordmark {
  display: grid;
  line-height: 1.05;
}

.logo-wordmark strong {
  font-size: 18px;
  letter-spacing: 0.08em;
  font-weight: 900;
}

.logo-wordmark em {
  font-style: normal;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--soft-text);
  font-weight: 800;
}

.nav {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 14px;
  font-weight: 700;
  color: var(--soft-text);
}

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

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--navy);
  margin: 5px auto;
}

.hero {
  background:
    radial-gradient(circle at 82% 12%, rgba(47, 111, 159, 0.18), transparent 34%),
    linear-gradient(180deg, #ffffff 0%, #f7f9fb 100%);
  padding: 84px 0 64px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  gap: 54px;
  align-items: center;
}

.eyebrow,
.section-kicker {
  color: var(--blue);
  font-size: 13px;
  font-weight: 850;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

h1,
h2,
h3 {
  color: var(--navy);
  line-height: 1.14;
  margin: 0;
}

h1 {
  font-size: clamp(42px, 6vw, 68px);
  letter-spacing: -0.05em;
  max-width: 850px;
}

h2 {
  font-size: clamp(28px, 4vw, 42px);
  letter-spacing: -0.035em;
}

h3 {
  font-size: 21px;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 19px;
  color: var(--soft-text);
  max-width: 700px;
  margin: 24px 0 30px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  border-radius: 999px;
  padding: 13px 20px;
  font-weight: 850;
  font-size: 14px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: 0.2s ease;
}

.btn-primary {
  background: var(--navy);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--navy-2);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--white);
  color: var(--navy);
  border-color: var(--line);
}

.btn-secondary:hover {
  border-color: var(--blue);
  color: var(--blue);
  transform: translateY(-1px);
}

.quote-note {
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  max-width: 670px;
  display: grid;
  gap: 6px;
  color: var(--soft-text);
}

.quote-note strong {
  color: var(--navy);
}

.image-placeholder {
  border: 1px dashed #aab8c7;
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(47, 111, 159, 0.08), rgba(79, 138, 123, 0.08)),
    #f7fafc;
  color: #7b8999;
  display: grid;
  place-items: center;
  text-align: center;
  font-weight: 800;
  padding: 18px;
}

.image-placeholder.large {
  min-height: 410px;
  box-shadow: var(--shadow);
}

.image-placeholder.small {
  min-height: 150px;
  margin-bottom: 18px;
}

.value-section {
  padding: 24px 0;
  background: var(--navy);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.value-card {
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: 16px;
  padding: 20px;
}

.value-card span {
  display: inline-block;
  color: rgba(255,255,255,0.55);
  font-weight: 900;
  margin-bottom: 10px;
}

.value-card h3 {
  color: var(--white);
  font-size: 18px;
  margin-bottom: 8px;
}

.value-card p {
  color: rgba(255,255,255,0.72);
  font-size: 14px;
  margin: 0;
}

.section {
  padding: 74px 0;
}

.section.compact {
  padding: 64px 0;
}

.muted {
  background: var(--bg);
}

.split {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 64px;
}

.text-block p {
  color: var(--soft-text);
  font-size: 17px;
  margin: 0 0 18px;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 40px;
  margin-bottom: 34px;
}

.section-head.centered {
  justify-content: center;
  text-align: center;
}

.section-head p {
  max-width: 570px;
  color: var(--soft-text);
  margin: 12px 0 0;
  font-size: 16px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.product-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: 0 8px 22px rgba(16, 32, 51, 0.05);
}

.product-card p {
  color: var(--soft-text);
  margin-bottom: 0;
}

.tabs {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 26px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.tab-buttons {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

.tab-button {
  border: 0;
  background: transparent;
  padding: 18px 14px;
  font: inherit;
  font-weight: 850;
  color: var(--soft-text);
  cursor: pointer;
  border-right: 1px solid var(--line);
}

.tab-button:last-child {
  border-right: 0;
}

.tab-button.active {
  background: var(--navy);
  color: var(--white);
}

.tab-panel {
  display: none;
  padding: 32px;
}

.tab-panel.active {
  display: block;
}

.tab-content {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 38px;
  align-items: start;
}

.tab-content p {
  color: var(--soft-text);
  font-size: 17px;
}

.tab-content ul {
  margin: 0;
  padding-left: 20px;
  color: var(--soft-text);
}

.tab-content li {
  margin-bottom: 10px;
}

.process-line {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 14px;
}

.process-step {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 12px;
  text-align: center;
}

.process-step span {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(47, 111, 159, 0.12);
  color: var(--blue);
  display: inline-grid;
  place-items: center;
  font-weight: 900;
  margin-bottom: 10px;
}

.process-step p {
  margin: 0;
  font-size: 14px;
  color: var(--navy);
  font-weight: 750;
}

.chain-section {
  padding: 62px 0;
  background: var(--white);
}

.chain-box {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 42px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 26px;
  padding: 34px;
  background: linear-gradient(135deg, #ffffff, #f7fafc);
}

.chain-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.chain-grid span {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
  font-weight: 800;
  color: var(--navy);
  text-align: center;
}

.accordion {
  max-width: 920px;
  margin: 0 auto;
  display: grid;
  gap: 12px;
}

.accordion-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
}

.accordion-button {
  width: 100%;
  border: 0;
  background: var(--white);
  padding: 19px 22px;
  font: inherit;
  font-weight: 850;
  color: var(--navy);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
}

.accordion-button span {
  font-size: 22px;
  color: var(--blue);
}

.accordion-content {
  display: none;
  padding: 0 22px 20px;
  color: var(--soft-text);
}

.accordion-item.open .accordion-content {
  display: block;
}

.accordion-item.open .accordion-button span {
  transform: rotate(45deg);
}

.contact-section {
  background: linear-gradient(180deg, #ffffff 0%, #f5f7fa 100%);
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 54px;
  align-items: start;
}

.contact-grid p {
  color: var(--soft-text);
  font-size: 17px;
}

.contact-card {
  margin-top: 26px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}

.contact-card p {
  margin: 0 0 10px;
}

.contact-form {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 28px;
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.contact-form label {
  display: grid;
  gap: 8px;
  font-weight: 750;
  color: var(--navy);
}

.contact-form .full {
  grid-column: 1 / -1;
}

select,
input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 13px 14px;
  font: inherit;
  background: var(--white);
  color: var(--text);
}

.form-note {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--soft-text);
  font-size: 13px;
}

.site-footer {
  background: var(--navy);
  color: var(--white);
  padding: 34px 0;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 30px;
}

.site-footer p {
  color: rgba(255,255,255,0.68);
  margin: 8px 0 0;
}

.small-note {
  font-size: 13px;
}

@media (max-width: 1080px) {
  .value-grid,
  .product-grid,
  .chain-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-line {
    grid-template-columns: repeat(4, 1fr);
  }

  .tab-buttons {
    grid-template-columns: 1fr;
  }

  .tab-button {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 860px) {
  .nav-toggle {
    display: block;
  }

  .nav {
    position: absolute;
    left: 20px;
    right: 20px;
    top: 72px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 18px;
    box-shadow: var(--shadow);
    overflow: hidden;
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 15px 18px;
    border-bottom: 1px solid var(--line);
  }

  .hero-grid,
  .split,
  .tab-content,
  .chain-box,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 58px 0;
  }

  .image-placeholder.large {
    min-height: 280px;
  }

  .section-head {
    display: block;
  }

  .section {
    padding: 62px 0;
  }

  .contact-form {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    display: block;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(var(--max), calc(100% - 28px));
  }

  h1 {
    font-size: 38px;
  }

  .value-grid,
  .product-grid,
  .chain-grid,
  .process-line {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    display: grid;
  }

  .btn {
    width: 100%;
  }

  .tab-panel {
    padding: 24px;
  }
}