:root {
  color-scheme: light;
  --page: #f4f8f3;
  --surface: #ffffff;
  --surface-soft: #e7f2e5;
  --text: #103b25;
  --muted: #446451;
  --green: #005e31;
  --green-deep: #024424;
  --water: #2aa7d8;
  --ring: rgba(0, 94, 49, 0.14);
  --shadow: 0 24px 70px rgba(9, 49, 27, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--page);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  font-family: "Trebuchet MS", Verdana, sans-serif;
  line-height: 1.5;
  background:
    radial-gradient(circle at top left, rgba(42, 167, 216, 0.18), transparent 30rem),
    linear-gradient(135deg, #f9fbf8 0%, var(--page) 54%, #edf7f7 100%);
}

body::selection {
  color: #ffffff;
  background: var(--green);
}

.landing {
  display: grid;
  min-height: 100vh;
  padding: clamp(1.5rem, 4vw, 4rem);
  place-items: center;
}

.announcement {
  display: grid;
  width: min(100%, 58rem);
  grid-template-columns: minmax(18rem, 28rem) minmax(0, 1fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 4rem);
}

.logo-shell {
  display: grid;
  position: relative;
  aspect-ratio: 104 / 46;
  place-items: center;
  border-radius: 18px;
  background:
    linear-gradient(var(--surface), var(--surface)) padding-box,
    linear-gradient(135deg, var(--green), var(--water), var(--green-deep)) border-box;
  border: 1px solid transparent;
  box-shadow: var(--shadow);
}

.logo-shell::before {
  content: "";
  position: absolute;
  inset: -0.75rem;
  z-index: -1;
  border-radius: inherit;
  background: linear-gradient(135deg, transparent, var(--ring));
}

.logo-shell img {
  display: block;
  width: min(92%, 26rem);
  height: auto;
}

.copy {
  max-width: 34rem;
}

h1 {
  margin: 0;
  color: var(--green-deep);
  font-size: clamp(3.25rem, 11vw, 6rem);
  line-height: 0.95;
  letter-spacing: 0;
}

.system-name {
  margin: 1.1rem 0 0;
  color: var(--green);
  font-size: clamp(1.35rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1.18;
}

.powered {
  display: inline-flex;
  margin: 1.4rem 0 0;
  padding: 0.75rem 1rem;
  border: 1px solid rgba(0, 94, 49, 0.16);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.74);
  font-size: clamp(0.95rem, 2vw, 1.05rem);
  box-shadow: 0 12px 32px rgba(9, 49, 27, 0.08);
}

@media (max-width: 720px) {
  .landing {
    padding: 2rem 1.1rem;
    text-align: center;
  }

  .announcement {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 1.75rem;
  }

  .logo-shell {
    width: min(92vw, 22rem);
  }

  .copy {
    max-width: 22rem;
  }

  .powered {
    justify-content: center;
  }
}