:root {
  --ink: #1f2d2b;
  --muted: #58706b;
  --line: #d9e7df;
  --paper: #fbfdfb;
  --soft: #eff7f2;
  --deep: #174c45;
  --green: #63a843;
  --mint: #dff0e5;
  --white: #ffffff;
  --shadow: 0 24px 70px rgba(31, 45, 43, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  line-height: 1.55;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 5vw, 72px);
  background: rgba(251, 253, 251, 0.9);
  border-bottom: 1px solid rgba(217, 231, 223, 0.8);
  backdrop-filter: blur(16px);
}

.brand img {
  display: block;
  width: clamp(188px, 24vw, 270px);
  height: auto;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: clamp(18px, 3vw, 34px);
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 28px);
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 650;
}

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

.language-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.language-option {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  min-height: 34px;
  padding: 0 10px;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 6px;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 850;
  cursor: pointer;
}

.language-option:hover {
  color: var(--deep);
}

.language-option.is-active {
  color: var(--white);
  background: var(--deep);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(340px, 0.76fr);
  gap: clamp(36px, 5vw, 80px);
  align-items: center;
  min-height: calc(100vh - 74px);
  padding: clamp(52px, 8vw, 104px) clamp(20px, 5vw, 72px) clamp(36px, 6vw, 72px);
  background:
    linear-gradient(130deg, rgba(223, 240, 229, 0.95), rgba(251, 253, 251, 0.96) 48%, rgba(232, 241, 236, 0.9)),
    radial-gradient(circle at 86% 24%, rgba(99, 168, 67, 0.18), transparent 32%);
}

.hero-copy {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--deep);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 720px;
  margin-bottom: 24px;
  font-size: clamp(2.75rem, 5.8vw, 5.75rem);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1.04;
  letter-spacing: 0;
}

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

.lead {
  max-width: 680px;
  color: var(--muted);
  font-size: clamp(1.08rem, 1.6vw, 1.32rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid var(--deep);
  border-radius: 6px;
  font-weight: 800;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

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

.button.primary {
  color: var(--white);
  background: var(--deep);
  box-shadow: 0 12px 28px rgba(23, 76, 69, 0.2);
}

.button.secondary {
  color: var(--deep);
  background: rgba(255, 255, 255, 0.54);
}

.system-visual {
  width: 100%;
  max-width: 520px;
  justify-self: end;
  padding: clamp(22px, 4vw, 34px);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.visual-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

.visual-top strong {
  color: var(--deep);
}

.process-map {
  position: relative;
  display: grid;
  gap: 16px;
  margin: 28px 0;
}

.process-map::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 18px;
  bottom: 18px;
  width: 2px;
  background: var(--line);
}

.node {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 54px;
  padding: 12px 16px 12px 54px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  font-weight: 760;
}

.node::before {
  content: "";
  position: absolute;
  left: 10px;
  width: 16px;
  height: 16px;
  border: 4px solid var(--white);
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 1px var(--line);
}

.node.active {
  color: var(--white);
  background: var(--deep);
  border-color: var(--deep);
}

.node.checked::after {
  content: "✓";
  margin-left: auto;
  color: var(--green);
  font-size: 1.35rem;
  font-weight: 900;
}

.signal-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.signal-row span {
  min-height: 46px;
  padding: 10px;
  color: var(--deep);
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 760;
  text-align: center;
}

.trust-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.trust-band div {
  padding: clamp(24px, 4vw, 42px) clamp(20px, 5vw, 72px);
  background: var(--white);
}

.trust-band span {
  display: block;
  margin-bottom: 6px;
  color: var(--deep);
  font-size: 1.12rem;
  font-weight: 850;
}

.trust-band p,
.service-card p,
.approach p,
.contact p,
.footer p {
  color: var(--muted);
}

.section {
  padding: clamp(64px, 9vw, 118px) clamp(20px, 5vw, 72px);
}

.section-head {
  max-width: 760px;
  margin-bottom: 34px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.service-card {
  min-height: 278px;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.service-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 28px;
  color: var(--deep);
  background: var(--mint);
  border-radius: 50%;
  font-weight: 850;
}

.approach {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(320px, 0.78fr);
  gap: clamp(36px, 6vw, 84px);
  background: #f3f8f5;
}

.approach-copy {
  max-width: 760px;
}

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

.approach-list div {
  padding: 22px;
  background: var(--white);
  border-left: 5px solid var(--green);
  border-radius: 6px;
}

.contact {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: clamp(52px, 8vw, 86px) clamp(20px, 5vw, 72px);
  color: var(--white);
  background: var(--deep);
}

.contact div {
  max-width: 760px;
}

.contact .eyebrow,
.contact p {
  color: #d7eadf;
}

.contact .button.primary {
  flex: 0 0 auto;
  color: var(--deep);
  background: var(--white);
  border-color: var(--white);
  box-shadow: none;
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px clamp(20px, 5vw, 72px);
  background: var(--white);
}

.footer img {
  width: 220px;
  max-width: 58vw;
  height: auto;
}

.footer p {
  margin-bottom: 0;
  text-align: right;
}

@media (max-width: 980px) {
  .hero,
  .approach {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .system-visual {
    justify-self: start;
  }

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

  .trust-band div:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 680px) {
  .site-header,
  .footer,
  .contact {
    align-items: flex-start;
    flex-direction: column;
  }

  .header-actions {
    width: 100%;
    align-items: stretch;
    flex-direction: column;
    gap: 14px;
  }

  .nav {
    width: 100%;
    justify-content: space-between;
  }

  .language-switch {
    width: 100%;
    justify-content: stretch;
  }

  .language-option {
    flex: 1;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .system-visual {
    padding: 18px;
  }

  .visual-top,
  .signal-row {
    grid-template-columns: 1fr;
  }

  .visual-top {
    display: grid;
  }

  .trust-band,
  .service-grid {
    grid-template-columns: 1fr;
  }

  .trust-band div:last-child {
    grid-column: auto;
  }

  .service-card {
    min-height: auto;
  }

  .footer p {
    text-align: left;
  }
}