:root {
  --bg: #f5f9ff;
  --surface: #ffffff;
  --surface-2: #eef5ff;
  --border: rgba(12, 77, 162, 0.12);
  --text: #12304f;
  --muted: #5f7896;
  --primary: #0c4da2;
  --primary-dark: #093a7b;
  --accent: #36a4ff;
  --success: #e9f4ff;
  --shadow: 0 24px 60px rgba(12, 77, 162, 0.12);
  --radius: 24px;
  --radius-sm: 16px;
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(54, 164, 255, 0.12), transparent 28%),
    linear-gradient(180deg, #f8fbff 0%, #f4f8fe 100%);
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
p { margin: 0; }

.container {
  width: min(100% - 32px, var(--container));
  margin: 0 auto;
}

.section {
  padding: 72px 0;
}

.alt-bg {
  background: linear-gradient(180deg, rgba(233, 244, 255, 0.7), rgba(255,255,255,0.9));
}

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: rgba(248, 251, 255, 0.78);
  border-bottom: 1px solid rgba(12, 77, 162, 0.08);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand strong {
  display: block;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.brand span {
  display: block;
  color: var(--muted);
  font-size: 0.82rem;
}

.menu-toggle {
  width: 46px;
  height: 46px;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 14px;
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 0 12px;
}

.menu-toggle span {
  height: 2px;
  width: 100%;
  background: var(--primary);
  border-radius: 2px;
  transition: 0.25s ease;
}

.nav {
  position: absolute;
  top: 78px;
  left: 16px;
  right: 16px;
  display: none;
  flex-direction: column;
  background: rgba(255,255,255,0.97);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 14px;
  box-shadow: var(--shadow);
}

.nav.is-open { display: flex; }
.nav a {
  padding: 12px 10px;
  color: var(--muted);
  font-weight: 500;
}

.nav a:hover,
.nav a:focus-visible { color: var(--primary); }

.nav-cta {
  background: var(--primary);
  color: #fff !important;
  border-radius: 12px;
  text-align: center;
}

.hero {
  padding: 48px 0 40px;
}

.hero-grid,
.spread-grid,
.treatment-grid {
  display: grid;
  gap: 28px;
}

.hero-copy h1 {
  margin: 12px 0 16px;
  font-size: clamp(2.2rem, 7vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.hero-subtitle,
.section-heading p,
.info-card p,
.symptom-card p,
.check-card p,
.treatment-card p,
.alert-card li,
.faq-item p,
.contact-card p {
  color: var(--muted);
  line-height: 1.7;
  font-size: 1rem;
}

.eyebrow,
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(12, 77, 162, 0.08);
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 24px;
}

.chip {
  padding: 10px 14px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--border);
  box-shadow: 0 10px 25px rgba(12, 77, 162, 0.06);
  font-weight: 600;
  color: var(--primary);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 14px;
  font-weight: 700;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), #1266d2);
  color: #fff;
  box-shadow: 0 16px 30px rgba(12, 77, 162, 0.25);
}
.btn-secondary {
  background: #fff;
  color: var(--primary);
  border: 1px solid var(--border);
}

.hero-note,
.small-note {
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-card,
.table-card,
.contact-card,
.treatment-card,
.info-card,
.symptom-card,
.check-card,
.alert-card,
.faq-item {
  background: rgba(255,255,255,0.92);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card {
  overflow: hidden;
}

.hero-card > img {
  width: 100%;
  padding: 18px;
  background: linear-gradient(180deg, rgba(12, 77, 162, 0.08), rgba(54, 164, 255, 0.04));
}

.hero-stat-grid {
  display: grid;
  gap: 1px;
  background: rgba(12, 77, 162, 0.06);
}
.hero-stat-grid article {
  padding: 18px;
  background: rgba(255,255,255,0.96);
}
.hero-stat-grid strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1rem;
}
.hero-stat-grid span {
  color: var(--muted);
  line-height: 1.6;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 28px;
}
.section-heading h2 {
  margin: 14px 0 14px;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}
.highlight-line {
  margin-bottom: 10px;
  color: var(--primary);
  font-weight: 800;
  font-size: 1.06rem;
}

.info-grid,
.symptoms-grid,
.check-grid,
.alert-grid {
  display: grid;
  gap: 18px;
}

.info-card,
.symptom-card,
.alert-card { padding: 24px; }
.check-card {
  padding: 22px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.info-card img,
.symptom-card img,
.check-card img,
.alert-card img {
  width: 56px;
  height: 56px;
  margin-bottom: 18px;
}
.check-card img { margin-bottom: 0; }

.info-card h3,
.symptom-card h3,
.check-card h3,
.alert-card h3,
.treatment-card h3 {
  margin: 0 0 10px;
  font-size: 1.14rem;
}

.table-card { padding: 10px; }
.table-scroll { overflow-x: auto; }
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}
.comparison-table th,
.comparison-table td {
  text-align: left;
  padding: 16px 18px;
  border-bottom: 1px solid rgba(12, 77, 162, 0.08);
  vertical-align: top;
  line-height: 1.55;
}
.comparison-table th {
  color: var(--primary);
  background: rgba(12, 77, 162, 0.05);
  font-size: 0.95rem;
}
.comparison-table td:first-child,
.comparison-table th:first-child {
  min-width: 180px;
  font-weight: 700;
}

.info-card.compact h3 { margin-top: 0; }
.clean-list,
.alert-card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.8;
}
.clean-list li + li,
.alert-card li + li { margin-top: 6px; }

.faq-list { display: grid; gap: 14px; }
.faq-item {
  padding: 0 22px;
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 22px 38px 22px 0;
  position: relative;
  font-weight: 700;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 18px;
  font-size: 1.6rem;
  color: var(--primary);
  transition: transform .25s ease;
}
.faq-item[open] summary::after {
  content: '–';
}
.faq-item p {
  padding-bottom: 22px;
}

.contact-card {
  padding: 28px;
  display: grid;
  gap: 24px;
  align-items: center;
}
.contact-link {
  display: inline-block;
  margin: 12px 0 16px;
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--primary);
}
.contact-note {
  background: rgba(12, 77, 162, 0.06);
  border-radius: 16px;
  padding: 14px 16px;
}

.footer {
  padding: 26px 0 40px;
  border-top: 1px solid rgba(12, 77, 162, 0.08);
}
.footer p {
  color: var(--muted);
  line-height: 1.7;
  font-size: 0.92rem;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.delay-1 { transition-delay: .08s; }
.delay-2 { transition-delay: .16s; }

@media (min-width: 720px) {
  .hero { padding: 72px 0 56px; }
  .hero-grid,
  .spread-grid,
  .treatment-grid { grid-template-columns: 1.15fr 0.85fr; align-items: center; }
  .info-grid.three-cols,
  .symptoms-grid,
  .check-grid,
  .alert-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .contact-card { grid-template-columns: 1.1fr 0.9fr; }
}

@media (min-width: 980px) {
  .menu-toggle { display: none; }
  .nav {
    position: static;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 6px;
    background: transparent;
    border: 0;
    box-shadow: none;
    padding: 0;
  }
  .nav a { padding: 10px 12px; }
  .info-grid.three-cols { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .symptoms-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .check-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  .reveal { opacity: 1; transform: none; }
}