:root {
  --ink: #14213d;
  --muted: #596579;
  --line: #dfe6ef;
  --bg: #f7fafc;
  --white: #ffffff;
  --accent: #0f766e;
  --accent-dark: #115e59;
  --warm: #f59e0b;
  --shadow: 0 20px 50px rgba(20, 33, 61, 0.12);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}
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: 18px clamp(18px, 5vw, 72px);
  background: rgba(247, 250, 252, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 12px; font-weight: 800; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: var(--accent);
  color: white;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
}
.nav { display: flex; align-items: center; gap: 22px; font-weight: 650; color: var(--muted); }
.nav a:hover { color: var(--ink); }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  padding: 13px 20px;
  background: var(--accent);
  color: white;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(15, 118, 110, 0.22);
}
.button:hover { background: var(--accent-dark); }
.button.secondary { background: white; color: var(--accent); border: 1px solid var(--line); box-shadow: none; }
.button.small { padding: 10px 15px; color: white; }
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: 42px;
  align-items: center;
  min-height: 650px;
  padding: 88px clamp(18px, 5vw, 72px);
  background:
    radial-gradient(circle at 85% 20%, rgba(15, 118, 110, 0.18), transparent 32%),
    linear-gradient(135deg, #ffffff 0%, #edf7f6 100%);
}
.eyebrow { text-transform: uppercase; letter-spacing: 0.13em; color: var(--accent); font-weight: 850; font-size: 0.78rem; }
h1, h2, h3 { line-height: 1.1; margin: 0 0 18px; }
h1 { font-size: clamp(2.7rem, 7vw, 5.7rem); max-width: 920px; letter-spacing: -0.06em; }
h2 { font-size: clamp(2rem, 4vw, 3.4rem); letter-spacing: -0.04em; }
h3 { font-size: 1.25rem; }
.lead { font-size: clamp(1.13rem, 2vw, 1.45rem); color: var(--muted); max-width: 750px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.hero-card {
  background: white;
  border: 1px solid var(--line);
  border-radius: 34px;
  padding: 34px;
  box-shadow: var(--shadow);
}
.stat { display: block; font-size: 2.1rem; line-height: 1.05; font-weight: 900; letter-spacing: -0.04em; margin-bottom: 18px; }
.section { padding: 88px clamp(18px, 5vw, 72px); }
.section.alt { background: white; }
.section-intro { max-width: 900px; margin-bottom: 38px; }
.section-intro p:not(.eyebrow) { color: var(--muted); font-size: 1.12rem; }
.section-intro.narrow { max-width: 720px; }
.cards { display: grid; gap: 22px; }
.cards.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cards.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 26px;
  padding: 28px;
  box-shadow: 0 12px 30px rgba(20, 33, 61, 0.06);
}
.alt .card { background: var(--bg); }
.card p, .mission-grid p { color: var(--muted); margin-bottom: 0; }
.mission-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}
.mission-grid > div {
  padding: 26px;
  border-left: 4px solid var(--accent);
  background: var(--bg);
  border-radius: 0 22px 22px 0;
}
.steps {
  list-style: none;
  counter-reset: step;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
  max-width: 940px;
}
.steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  padding: 22px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 22px;
}
.steps li::before {
  content: counter(step);
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--warm);
  color: white;
  font-weight: 900;
}
.steps span { color: var(--muted); display: block; }
.notice {
  margin-top: 30px;
  max-width: 940px;
  padding: 24px;
  border-radius: 22px;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
}
.join {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.8fr);
  gap: 42px;
  align-items: start;
  background: linear-gradient(135deg, #14213d, #0f766e);
  color: white;
}
.join .eyebrow, .join p { color: rgba(255,255,255,0.82); }
.contact-form {
  display: grid;
  gap: 14px;
  background: white;
  color: var(--ink);
  border-radius: 28px;
  padding: 26px;
}
label { display: grid; gap: 8px; font-weight: 750; }
input, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 13px 14px;
  font: inherit;
}
.footer {
  padding: 32px clamp(18px, 5vw, 72px);
  background: #0b1324;
  color: rgba(255,255,255,0.78);
}
.footer p { margin: 6px 0; }
@media (max-width: 920px) {
  .nav { display: none; }
  .hero, .join { grid-template-columns: 1fr; min-height: auto; }
  .cards.three, .cards.two, .mission-grid { grid-template-columns: 1fr; }
  h1 { font-size: 3.1rem; }
}
@media (max-width: 560px) {
  .section, .hero { padding: 58px 18px; }
  .steps li { grid-template-columns: 1fr; }
  .cta-row .button { width: 100%; }
}