:root {
  color-scheme: light;
  --bg: #eef2f6;
  --surface: #ffffff;
  --text: #1f2937;
  --muted: #64748b;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --border: #e2e8f0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
}

a {
  color: var(--accent);
}

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

.site-header {
  background: linear-gradient(165deg, #0f172a 0%, #1e293b 55%, #334155 100%);
  color: #f8fafc;
  padding: 1.25rem 1.5rem 2.5rem;
}

.site-header-inner,
.page-wrap,
.site-footer-inner {
  max-width: 760px;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-decoration: none;
  color: inherit;
}

.brand-badge {
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.12);
}

.page-wrap {
  padding: 0 1.5rem 3rem;
  margin-top: -1.25rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.75rem;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
}

.card + .card {
  margin-top: 1rem;
}

h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  line-height: 1.2;
}

h2 {
  margin: 1.75rem 0 0.75rem;
  font-size: 1.25rem;
}

.lead {
  font-size: 1.05rem;
  color: var(--muted);
  margin: 0 0 1.25rem;
}

.cta {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.85rem 1.25rem;
  border-radius: 999px;
  background: var(--accent);
  color: #fff !important;
  text-decoration: none;
  font-weight: 600;
}

.cta:hover {
  background: var(--accent-dark);
}

ol,
ul {
  padding-left: 1.25rem;
}

li + li {
  margin-top: 0.35rem;
}

.faq-item + .faq-item {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.faq-item h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
}

.faq-item p {
  margin: 0;
  color: var(--muted);
}

.guide-links {
  display: grid;
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.guide-links a {
  display: block;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  text-decoration: none;
  background: #f8fafc;
}

.site-footer {
  padding: 2rem 1.5rem 3rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer a {
  margin-right: 1rem;
}

.breadcrumbs {
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  font-size: 0.88rem;
  color: var(--muted);
}

.breadcrumbs li + li::before {
  content: "›";
  margin-right: 0.35rem;
  color: #94a3b8;
}

.breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--accent);
}

.meta-updated {
  margin: 0 0 1rem;
  font-size: 0.88rem;
  color: var(--muted);
}

.meta-updated time {
  font-weight: 600;
  color: #475569;
}

.related-tools {
  display: grid;
  gap: 0.65rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.related-tools a {
  display: block;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  text-decoration: none;
  background: #f8fafc;
  color: #1e293b;
}

.related-tools a span {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.88rem;
  color: var(--muted);
  font-weight: 400;
}

.related-tools a:hover {
  border-color: #93c5fd;
  background: #f0f9ff;
}