:root {
  --max-width: 1160px;
  --color-primary: #123B4F;
  --color-primary-light: #1C5A73;
  --color-accent: #17B890;
  --color-accent-dark: #0E8E6D;
  --color-text: #1A2733;
  --color-text-muted: #55677A;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F4F8FA;
  --color-border: #E1E8ED;
  --radius: 10px;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-body);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-primary);
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(1.9rem, 4vw, 2.6rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-top: 2.4em; }
h3 { font-size: 1.2rem; margin-top: 1.6em; }

p { margin: 0 0 1.1em; }

a { color: var(--color-primary-light); }
a:hover { color: var(--color-accent-dark); }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

img { max-width: 100%; height: auto; display: block; }

.icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  vertical-align: -0.15em;
  stroke: currentColor;
  fill: none;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 20;
}
.site-header .container {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-logo { display: flex; align-items: center; gap: 0.5rem; text-decoration: none; }
.site-logo__mark { width: 34px; height: 34px; border-radius: 8px; background: var(--color-primary); display: flex; align-items: center; justify-content: center; flex: none; }
.site-logo__mark .icon { width: 20px; height: 20px; color: #EAF6F2; }
.site-logo__text { font-weight: 700; color: var(--color-primary); font-size: 1.05rem; }

.site-nav { display: none; }
.site-nav ul { list-style: none; display: flex; gap: 1.6rem; margin: 0; padding: 0; }
.site-nav a { color: var(--color-text); text-decoration: none; font-weight: 500; font-size: 0.95rem; }
.site-nav a:hover, .site-nav a.active { color: var(--color-accent-dark); }

.nav-toggle {
  border: none;
  background: none;
  padding: 0.4rem;
  cursor: pointer;
  color: var(--color-primary);
}
.nav-toggle .icon { width: 26px; height: 26px; }

@media (min-width: 768px) {
  .site-nav { display: block; }
  .nav-toggle { display: none; }
}

/* Mobile nav panel */
.site-nav.is-open {
  display: block;
  position: absolute;
  top: 64px;
  left: 0;
  right: 0;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 1.5rem;
}
.site-nav.is-open ul { flex-direction: column; gap: 1rem; }

/* Footer */
.site-footer {
  background: var(--color-primary);
  color: #C9D8DE;
  margin-top: 4rem;
  padding: 2.5rem 0 1.5rem;
  font-size: 0.9rem;
}
.site-footer a { color: #EAF6F2; }
.site-footer__links { display: flex; flex-wrap: wrap; gap: 1.2rem; margin: 0 0 1.2rem; padding: 0; list-style: none; }
.site-footer__meta { border-top: 1px solid rgba(255,255,255,0.15); padding-top: 1.2rem; color: #9DB2BA; }

/* Details/summary FAQ accordion */
details.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.9rem 1.1rem;
  margin-bottom: 0.75rem;
  background: var(--color-bg-alt);
}
details.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--color-primary);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
details.faq-item summary::-webkit-details-marker { display: none; }
details.faq-item summary .icon { color: var(--color-accent-dark); flex: none; transition: transform 0.2s ease; }
details.faq-item[open] summary .icon { transform: rotate(45deg); }
details.faq-item p { margin: 0.8rem 0 0; color: var(--color-text-muted); }

/* Tables */
.table-wrap { overflow-x: auto; margin: 1.5rem 0; border: 1px solid var(--color-border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; min-width: 560px; }
th, td { text-align: left; padding: 0.75rem 0.9rem; border-bottom: 1px solid var(--color-border); vertical-align: top; }
thead th { background: var(--color-bg-alt); color: var(--color-primary); font-weight: 700; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:nth-child(odd) { background: #FBFDFE; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.setup-steps { padding-left: 1.3rem; }
.setup-steps li { margin-bottom: 0.6rem; }

/* Bulleted lists */
.styled-list { list-style: none; margin: 1.2rem 0; padding: 0; display: grid; gap: 0.7rem; }
.styled-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.7rem 0.9rem;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
}
.styled-list .icon { color: var(--color-accent-dark); flex: none; margin-top: 0.15em; }