:root {
  --bg: #f3efe6;
  --surface: rgba(255, 253, 248, 0.88);
  --surface-strong: #fffdf8;
  --border: rgba(48, 67, 54, 0.14);
  --text: #193229;
  --muted: #5f746b;
  --accent: rgb(31, 179, 223);
  --accent-soft: rgba(31, 179, 223, 0.16);
  --shadow: 0 20px 60px rgba(25, 50, 41, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Avenir Next", Avenir, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(
      circle at top left,
      rgba(31, 179, 223, 0.2),
      transparent 28%
    ),
    radial-gradient(
      circle at bottom right,
      rgba(182, 140, 76, 0.18),
      transparent 30%
    ),
    linear-gradient(160deg, #f7f3ea 0%, #efe7da 100%);
}

main {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 64px;
}

.hero {
  display: grid;
  gap: 18px;
  margin-bottom: 30px;
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 12px;
  color: var(--muted);
}

h1 {
  margin: 0;
  max-width: 12ch;
  font-size: clamp(2.8rem, 6vw, 5.6rem);
  line-height: 0.95;
  font-weight: 700;
}

.subtitle {
  margin: 0;
  max-width: 720px;
  font-size: 1.08rem;
  line-height: 1.6;
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
}

.card {
  display: grid;
  gap: 18px;
  padding: 24px;
  border-radius: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  text-decoration: none;
  color: inherit;
  transition:
    transform 0.18s ease,
    border-color 0.18s ease,
    box-shadow 0.18s ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: rgba(31, 179, 223, 0.5);
  box-shadow: 0 24px 70px rgba(31, 179, 223, 0.14);
}

.card h2 {
  margin: 0;
  font-size: 1.35rem;
  line-height: 1.2;
}

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

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: var(--accent);
}

.card-link::after {
  content: "->";
}

.footer-note {
  margin-top: 18px;
  font-size: 0.95rem;
  color: var(--muted);
}

code {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.95em;
}

.sensor-note {
  margin-top: 32px;
  padding: 20px 24px;
  border-radius: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  overflow-x: auto;
}

.sensor-note-title {
  text-align: center;
  margin: 0 0 30px;
  font-weight: 700;
  font-size: 1.5rem;
}

.sensor-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 1rem;
}

.sensor-table th {
  text-align: left;
  padding: 7px 24px 7px 0;
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.sensor-table td {
  padding: 7px 24px 7px 0;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.sensor-table tr:last-child td {
  border-bottom: none;
}

.sensor-table td:first-child {
  color: var(--text);
  font-weight: 500;
  white-space: nowrap;
}

.badge {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 20px;
}

.badge-yes {
  background: rgba(31, 179, 223, 0.14);
  color: rgb(20, 140, 180);
}

.badge-no {
  background: rgba(0, 0, 0, 0.05);
  color: #aaa;
}

.has-tip {
  position: relative;
  cursor: default;
  text-decoration: underline dotted var(--muted);
  text-underline-offset: 3px;
}

.has-tip .info-tooltip {
  display: none;
  position: absolute;
  left: 0;
  top: calc(100% + 6px);
  background: var(--surface-strong);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--muted);
  white-space: nowrap;
  box-shadow: 0 4px 16px rgba(25, 50, 41, 0.1);
  z-index: 10;
}

.has-tip:hover .info-tooltip {
  display: block;
}

.sensor-table .section-row td {
  padding: 15px 10px 5px;
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text);
  border-bottom: 2px solid var(--border);
}

@media (max-width: 640px) {
  main {
    padding-top: 28px;
  }

  .card {
    padding: 20px;
  }
}