:root {
  --accent: #e85d04;
  --accent-dark: #c44d00;
  --bg: #f8f9fa;
  --surface: #ffffff;
  --text: #212529;
  --text-muted: #6c757d;
  --border: #dee2e6;
  --head: #1a1a2e;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 1rem;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); text-decoration: underline; }

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ---- Header ---- */
.site-header {
  background: var(--head);
  padding: 1rem 0;
}
.site-header .container {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.site-brand {
  font-size: 1.35rem;
  font-weight: 700;
  color: #ffffff;
  text-decoration: none;
}
.site-brand span { color: var(--accent); }
.site-tagline {
  font-size: 0.82rem;
  color: #8a8aaa;
  margin-left: auto;
}

nav {
  background: var(--surface);
  border-bottom: 2px solid var(--accent);
}
nav .container {
  display: flex;
  gap: 1.5rem;
  padding-top: 0.55rem;
  padding-bottom: 0.55rem;
  flex-wrap: wrap;
}
nav a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text);
  padding: 0.15rem 0;
}
nav a:hover {
  color: var(--accent);
  text-decoration: none;
}

/* ---- Hero ---- */
.hero {
  background: var(--head);
  color: #fff;
  padding: 3rem 0 2.5rem;
  border-bottom: 3px solid var(--accent);
}
.hero h1 {
  color: #ffffff;
  font-size: 2rem;
  line-height: 1.2;
  margin-bottom: 0.75rem;
}
.hero .lead {
  color: #9a9ab8;
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
  max-width: 620px;
}
.hero .btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 0.65rem 1.4rem;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.95rem;
}
.hero .btn:hover {
  background: var(--accent-dark);
  text-decoration: none;
}

/* ---- Main content ---- */
main {
  padding: 2.5rem 0 4rem;
}

h1, h2, h3, h4 {
  color: var(--head);
  line-height: 1.25;
}
h1 { font-size: 1.85rem; margin-bottom: 0.6rem; }
h2 { font-size: 1.3rem; margin: 2rem 0 0.65rem; }
h3 { font-size: 1.05rem; margin: 1.5rem 0 0.5rem; }
p { margin-bottom: 1rem; }
ul, ol { margin: 0 0 1rem 1.5rem; }
li { margin-bottom: 0.3rem; }
strong { color: var(--head); }

/* ---- Section titles ---- */
.section-title {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--border);
  margin-top: 2.5rem;
}
.section-title:first-child { margin-top: 0; }

/* ---- Card grid ---- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-bottom: 0.5rem;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: 0 0 6px 6px;
  padding: 1.25rem;
}
.card .card-cat {
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  margin-bottom: 0.4rem;
}
.card h3 {
  margin-top: 0;
  font-size: 1rem;
  margin-bottom: 0.5rem;
}
.card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}
.card a.read-more {
  font-size: 0.875rem;
  font-weight: 600;
}

/* ---- Article layout ---- */
.article-header {
  margin-bottom: 1.75rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}
.breadcrumb {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); text-decoration: none; }
.article-meta {
  font-size: 0.83rem;
  color: var(--text-muted);
  margin-top: 0.75rem;
  margin-bottom: 0;
}
.article-lead {
  font-size: 1.08rem;
  color: #495057;
  margin-bottom: 0.5rem;
  line-height: 1.55;
}

/* ---- Callout boxes ---- */
.callout {
  padding: 0.9rem 1.1rem;
  margin: 1.25rem 0;
  border-radius: 0 4px 4px 0;
  font-size: 0.9rem;
  line-height: 1.55;
}
.callout p:last-child { margin-bottom: 0; }
.callout.warning {
  background: #fff8e1;
  border-left: 4px solid #f0a500;
}
.callout.danger {
  background: #fdecea;
  border-left: 4px solid #d32f2f;
}
.callout.tip {
  background: #e3f2fd;
  border-left: 4px solid #1976d2;
}

/* ---- Tables ---- */
.table-wrap {
  overflow-x: auto;
  margin: 0.5rem 0 1.5rem;
  border-radius: 4px;
  border: 1px solid var(--border);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  background: var(--surface);
}
thead {
  background: var(--head);
  color: #ffffff;
}
thead th {
  padding: 0.65rem 0.9rem;
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}
tbody tr:nth-child(even) { background: #f5f5f7; }
tbody td {
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
tbody tr:last-child td { border-bottom: none; }

/* ---- Guides index list ---- */
.guide-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.guide-list li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 0 4px 4px 0;
  margin-bottom: 0.75rem;
  padding: 0.85rem 1.1rem;
}
.guide-list li a {
  font-weight: 600;
  font-size: 1rem;
  display: block;
  margin-bottom: 0.25rem;
}
.guide-list li p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 0;
}

/* ---- Footer ---- */
footer {
  background: var(--head);
  color: #6b6b88;
  padding: 1.75rem 0;
  font-size: 0.8rem;
  text-align: center;
}
footer a { color: #8a8ab0; }
footer p { margin-bottom: 0.35rem; }
footer p:last-child { margin-bottom: 0; }

@media (max-width: 600px) {
  h1 { font-size: 1.5rem; }
  .hero h1 { font-size: 1.55rem; }
  .card-grid { grid-template-columns: 1fr; }
  .article-lead { font-size: 1rem; }
}