:root {
  --ink: #122033;
  --muted: #5b6b7f;
  --paper: #f4f1e7;
  --white: #ffffff;
  --panel: rgba(255, 255, 255, 0.82);
  --panel-strong: rgba(255, 255, 255, 0.92);
  --line: rgba(18, 32, 51, 0.1);
  --green: #2f9d56;
  --green-soft: #e7f6eb;
  --teal: #0b8e8b;
  --shadow: 0 28px 68px rgba(18, 32, 51, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(47, 157, 86, 0.1), transparent 28%),
    radial-gradient(circle at top right, rgba(11, 142, 139, 0.08), transparent 26%),
    linear-gradient(180deg, #fbfaf5 0%, #f1eee5 100%);
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
}

.page-shell {
  width: min(1240px, calc(100vw - 32px));
  margin: 18px auto 34px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 10px 0 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 58px;
  height: 58px;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow);
  background: rgba(255, 255, 255, 0.96);
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand strong,
h1, h2, h3 {
  font-family: "Sora", "Segoe UI", sans-serif;
}

.brand strong {
  display: block;
  font-size: 18px;
}

.brand span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-top: 4px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.nav a,
.btn {
  text-decoration: none;
}

.nav a {
  color: var(--ink);
  font-weight: 600;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(420px, 1.05fr);
  gap: 28px;
  align-items: start;
}

.hero-copy,
.board-card,
.feature-card,
.comm-card,
.scenario,
.cta-band {
  border-radius: 30px;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.hero-copy {
  padding: 38px;
}

.kicker {
  margin: 0 0 12px;
  color: var(--teal);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 12px;
  font-weight: 700;
}

h1 {
  margin: 0 0 18px;
  font-size: clamp(38px, 5vw, 64px);
  line-height: 1.03;
}

.lede,
.section-note {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.74;
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 18px;
  border-radius: 999px;
  font-weight: 700;
}

.btn.solid {
  color: var(--white);
  background: linear-gradient(135deg, var(--green), #1f7a43);
}

.btn.ghost {
  color: var(--ink);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.68);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.hero-tags span {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(47, 157, 86, 0.18);
  background: var(--green-soft);
  color: #24553a;
  font-weight: 600;
  font-size: 14px;
}

.board-card {
  padding: 20px;
}

.board-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 18px;
}

.board-head strong {
  display: block;
  font-size: 22px;
}

.board-head span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
}

.board-card img {
  width: 100%;
  display: block;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.88);
}

.spec-stack {
  display: grid;
  gap: 10px;
}

.spec-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: 999px;
  background: #ffffff;
  border: 1px solid rgba(47, 157, 86, 0.2);
  color: #24553a;
  font-size: 14px;
  font-weight: 700;
}

.section {
  margin-top: 28px;
}

.section-heading {
  margin-bottom: 18px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.1;
}

.feature-grid,
.comm-grid,
.scenario-grid {
  display: grid;
  gap: 18px;
}

.feature-grid,
.scenario-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.comm-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.feature-card,
.comm-card,
.scenario {
  padding: 24px;
}

.feature-card h3,
.comm-card h3,
.scenario h3 {
  margin: 0 0 10px;
  font-size: 22px;
}

.feature-card p,
.comm-card p,
.scenario p {
  margin: 0;
  color: var(--muted);
  line-height: 1.72;
}

.contrast .feature-card,
.contrast .comm-card,
.contrast .scenario,
.comm-card {
  background: var(--panel-strong);
}

.cta-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px;
}

@media (max-width: 1100px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .comm-grid,
  .scenario-grid {
    grid-template-columns: 1fr;
  }

  .cta-band {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100vw - 20px, 100%);
    margin: 10px auto 24px;
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-copy,
  .board-card,
  .feature-card,
  .comm-card,
  .scenario,
  .cta-band {
    padding: 20px;
    border-radius: 24px;
  }

  h1 {
    font-size: clamp(32px, 11vw, 46px);
  }

  .lede,
  .section-note {
    font-size: 16px;
  }

  .board-head {
    flex-direction: column;
  }
}