/* =========================
   BASE
========================= */

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, sans-serif;
  background: #f6f7f8;
  color: #1c1f24;
  line-height: 1.55;
  font-size: 16px;
}

/* Page container */
.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 32px;
}

/* =========================
   TYPOGRAPHY
========================= */

h1 {
  font-size: 54px;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  max-width: 22ch;
}

h2 {
  font-size: 26px;
  margin: 64px 0 16px;
  letter-spacing: -0.02em;
}

h3 {
  font-size: 20px;
  margin: 8px 0 10px;
  letter-spacing: -0.01em;
}

p {
  color: #5c6675;
  max-width: 78ch;
  margin: 0 0 14px;
}

/* subtle emphasis text */
strong {
  font-weight: 600;
  color: #1c1f24;
}

/* =========================
   TOP BAR
========================= */

.topbar {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: #6a7280;
  margin-bottom: 60px;
}

/* =========================
   CTA BUTTONS
========================= */

.cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 24px 0 64px;
}

.button {
  padding: 12px 18px;
  border-radius: 999px;
  border: 1px solid #d7dbe0;
  background: #ffffff;
  color: #1c1f24;
  text-decoration: none;
  font-size: 14px;
  transition: all 0.15s ease;
}

.button:hover {
  border-color: #b9c0c9;
}

.button-primary {
  background: #1c1f24;
  color: #ffffff;
  border-color: #1c1f24;
}

/* =========================
   SYMPTOM / GRID BOXES
========================= */

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 16px;
}

.box {
  background: #ffffff;
  border: 1px solid #d7dbe0;
  border-radius: 14px;
  padding: 16px;
  color: #5c6675;
  font-size: 15px;
}

/* =========================
   DIAGNOSTIC CARDS (OFFERS)
========================= */

.card {
  background: #ffffff;
  border: 1px solid #d7dbe0;
  border-radius: 16px;
  padding: 18px;
  margin-top: 14px;
}

.price-tag {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #6a7280;
  margin-bottom: 6px;
}

/* =========================
   LAYOUT HELPERS
========================= */

.section {
  margin-top: 70px;
}

.small-note {
  font-size: 13px;
  color: #6a7280;
}

/* =========================
   HEADER / FOOTER
========================= */

.footer {
  margin-top: 80px;
  font-size: 12px;
  color: #6a7280;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

/* =========================
   MOBILE
========================= */

@media (max-width: 768px) {
  h1 {
    font-size: 36px;
  }

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

  .topbar {
    flex-direction: column;
    gap: 8px;
  }
}