:root {
  --bg: #ffffff;
  --bg-strong: #f5f8fd;
  --panel: #ffffff;
  --panel-alt: #f4f7fc;
  --text: #18324f;
  --muted: #60748b;
  --line: rgba(24, 50, 79, 0.12);
  --accent: #13b4e3;
  --accent-strong: #0e8db1;
  --accent-soft: #d8f4fb;
  --danger: #9f2037;
  --shadow: 0 18px 48px rgba(19, 180, 227, 0.14);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Avenir Next", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(19, 180, 227, 0.12), transparent 34%),
    radial-gradient(circle at right 12%, rgba(19, 180, 227, 0.1), transparent 22%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-strong) 100%);
  padding: 28px 20px 56px;
}

.shell {
  width: min(1160px, 100%);
  margin: 0 auto;
  display: grid;
  gap: 22px;
}

.shell-home {
  min-height: calc(100vh - 84px);
  grid-template-rows: 1fr auto;
}

.hero,
.card {
  border: 1px solid rgba(24, 50, 79, 0.08);
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.99), rgba(247, 250, 255, 0.97));
  box-shadow: var(--shadow);
  padding: 24px;
}

.hero-home {
  display: grid;
  grid-template-rows: 1fr auto;
  text-align: center;
  min-height: calc(100vh - 84px);
}

.hero-home-copy {
  display: grid;
  gap: 18px;
  justify-items: center;
  align-self: center;
}

.hero-logo {
  width: clamp(140px, 18vw, 220px);
  height: auto;
  display: block;
  object-fit: contain;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 4rem);
  letter-spacing: -0.06em;
  text-transform: uppercase;
}

.tool-grid {
  align-self: end;
  justify-self: center;
  width: min(520px, 100%);
  margin-top: 8vh;
  margin-bottom: 10vh;
}

.tool-card {
  display: grid;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  transition: transform 140ms ease, box-shadow 140ms ease, border-color 140ms ease;
}

.tool-card:hover,
.tool-card:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 30px 58px rgba(19, 180, 227, 0.22);
  border-color: rgba(19, 180, 227, 0.28);
  outline: none;
}

.tool-card h2 {
  margin: 0;
  font-size: 1.35rem;
  text-transform: uppercase;
  letter-spacing: -0.03em;
}

.tool-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

@media (max-width: 640px) {
  body { padding: 18px 14px 42px; }
  .hero, .card { padding: 18px; border-radius: 18px; }
}