:root {
  color-scheme: light;
  --ink: #15251a;
  --muted: #56645a;
  --paper: #fbfcf8;
  --panel: #f0f5ed;
  --line: #d9e4d6;
  --green: #226b36;
  --green-soft: #dcebd9;
  --red: #b92929;
  --white: #ffffff;
  --max: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 88% 6%, rgba(126, 190, 89, 0.18), transparent 30rem),
    var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

a { color: var(--green); }

a:focus-visible {
  outline: 3px solid rgba(34, 107, 54, 0.35);
  outline-offset: 4px;
  border-radius: 4px;
}

.site-header,
main,
footer {
  width: min(calc(100% - 2rem), var(--max));
  margin-inline: auto;
}

.site-header {
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  font-size: 1.2rem;
  font-weight: 800;
  text-decoration: none;
}

.brand img {
  width: 52px;
  height: 52px;
  object-fit: contain;
}

.release-state,
.availability {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--green);
  font-size: 0.86rem;
  font-weight: 750;
  padding: 0.45rem 0.8rem;
}

.hero {
  min-height: 610px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(300px, 0.92fr);
  align-items: center;
  gap: 4rem;
  padding: 4rem 0 6rem;
}

.hero-copy { max-width: 720px; }

.eyebrow {
  margin: 0 0 0.8rem;
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 1.4rem;
  font-size: clamp(3.1rem, 7vw, 6.9rem);
  line-height: 0.98;
  letter-spacing: -0.06em;
}

h2 {
  max-width: 780px;
  font-size: clamp(2rem, 4.5vw, 4.3rem);
  line-height: 1.04;
  letter-spacing: -0.045em;
}

h3 {
  font-size: 1.25rem;
  line-height: 1.25;
}

.hero-lead {
  max-width: 650px;
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.35rem);
}

.availability { margin-top: 1rem; }

.hero-mark {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 430px;
}

.hero-mark::before {
  content: "";
  position: absolute;
  inset: 10% 0 0 8%;
  border-radius: 50%;
  background: linear-gradient(145deg, var(--green-soft), rgba(255, 255, 255, 0.2));
  filter: blur(1px);
}

.hero-mark img {
  position: relative;
  width: min(100%, 440px);
  height: auto;
  filter: drop-shadow(0 28px 38px rgba(27, 64, 36, 0.15));
}

.principles,
.ecosystem,
.contact {
  padding: 7rem 0;
}

.section-intro { margin-bottom: 3rem; }

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.cards article {
  min-height: 290px;
  padding: 1.7rem;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.72);
}

.cards p,
.component-list span,
.contact p { color: var(--muted); }

.card-number {
  display: block;
  margin-bottom: 4rem;
  color: var(--red);
  font-weight: 850;
}

.boundaries {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 4rem;
  padding: 6rem;
  border-radius: 36px;
  color: var(--white);
  background: var(--ink);
}

.boundaries .eyebrow { color: #98d07a; }

.boundaries ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.boundaries li {
  position: relative;
  padding: 1rem 0 1rem 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.boundaries li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.65rem;
  width: 0.7rem;
  height: 0.7rem;
  border: 2px solid #98d07a;
  border-radius: 50%;
}

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

.component-list div {
  display: grid;
  grid-template-columns: minmax(180px, 0.6fr) 1.4fr;
  gap: 2rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--line);
}

.contact {
  max-width: 880px;
  text-align: center;
}

.contact .eyebrow,
.contact h2 { margin-inline: auto; }

.contact p { font-size: 1.08rem; }

footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
}

@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding-top: 3rem;
  }

  .hero-mark {
    min-height: 300px;
    order: -1;
  }

  .hero-mark img { width: min(76vw, 330px); }

  .cards { grid-template-columns: 1fr; }

  .cards article { min-height: auto; }

  .card-number { margin-bottom: 2rem; }

  .boundaries {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 3rem 1.5rem;
  }
}

@media (max-width: 560px) {
  .site-header { min-height: 76px; }

  .brand img { width: 44px; height: 44px; }

  .release-state { font-size: 0.75rem; }

  .hero { min-height: auto; padding-bottom: 4rem; }

  .hero-mark { min-height: 220px; }

  .principles,
  .ecosystem,
  .contact { padding: 4.5rem 0; }

  .component-list div { grid-template-columns: 1fr; gap: 0.25rem; }

  footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}