:root {
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: #24120c;
  background: #fffaf0;
  --wine: #7f0f22;
  --wine-dark: #5c0b19;
  --red: #c51c32;
  --gold: #f2a91e;
  --gold-light: #fff4de;
  --line: #eadbc6;
  --muted: #6c584d;
  --surface: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background-color: #fffaf0;
  color: #24120c;
  font-size: 1rem;
  line-height: 1.75;
}

header, main, footer, .container {
  width: min(840px, calc(100% - 36px));
  margin: auto;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

header .brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--wine);
  font-weight: 900;
  text-decoration: none;
  font-size: 1.15rem;
}

header .brand img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--gold);
}

header nav {
  display: flex;
  gap: 18px;
  align-items: center;
}

header nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.88rem;
  transition: color 0.15s ease;
}

header nav a:hover, header nav a.active {
  color: var(--wine);
  font-weight: 800;
}

main {
  padding: 48px 0 64px;
}

.breadcrumbs {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 20px;
  display: flex;
  gap: 8px;
  align-items: center;
}

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

.breadcrumbs a:hover {
  color: var(--wine);
  text-decoration: underline;
}

h1, h2, h3 {
  font-family: Georgia, serif;
  color: var(--wine);
  line-height: 1.25;
}

h1 {
  font-size: clamp(2.2rem, 6vw, 3.4rem);
  letter-spacing: -0.035em;
  margin: 0 0 16px;
  color: var(--wine-dark);
}

h2 {
  font-size: 1.65rem;
  margin: 42px 0 16px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 8px;
}

h3 {
  font-size: 1.25rem;
  margin: 28px 0 12px;
}

p, li {
  color: #4a382e;
  line-height: 1.8;
  margin-bottom: 16px;
}

ul, ol {
  padding-left: 24px;
  margin-bottom: 24px;
}

li {
  margin-bottom: 8px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--muted);
  padding: 12px 0 20px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 32px;
}

.article-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.byline {
  margin: -18px 0 30px;
  color: var(--muted);
  font-size: 0.88rem;
}

.sources {
  margin: 40px 0 24px;
  padding: 20px 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.sources h2 {
  margin-top: 0;
  font-size: 1.25rem;
}

.sources ul {
  margin-bottom: 0;
}

.sources a {
  color: var(--wine);
  font-weight: 700;
}

.formula-box {
  background: #ffffff;
  border: 1px solid var(--line);
  border-left: 5px solid var(--wine);
  border-radius: 8px;
  padding: 20px 24px;
  margin: 28px 0;
  box-shadow: 0 2px 8px rgba(127, 15, 34, 0.04);
}

.formula-box strong {
  color: var(--wine);
  display: block;
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.formula-code {
  font-family: "Courier New", Courier, monospace;
  background: var(--gold-light);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.95rem;
  font-weight: 700;
  color: #633200;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 28px 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  text-align: left;
}

th {
  background: var(--wine);
  color: #ffffff;
  padding: 12px 16px;
  font-weight: 700;
}

td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  color: #4a382e;
}

tr:last-child td {
  border-bottom: none;
}

tr:nth-child(even) {
  background: #fffdf9;
}

.callout-warning {
  background: #fff4de;
  border: 1px solid #ebd4ab;
  border-left: 5px solid var(--gold);
  border-radius: 8px;
  padding: 18px 22px;
  margin: 28px 0;
}

.callout-warning h4 {
  margin: 0 0 6px;
  color: #7d4d00;
  font-size: 1.05rem;
}

.callout-warning p {
  margin: 0;
  color: #5c3800;
  font-size: 0.92rem;
}

.responsible-gaming-box {
  background: #fdf2f2;
  border: 1px solid #f8c8c8;
  border-left: 5px solid var(--red);
  border-radius: 8px;
  padding: 20px 24px;
  margin: 40px 0 20px;
}

.responsible-gaming-box h4 {
  margin: 0 0 8px;
  color: var(--wine);
  font-size: 1.05rem;
}

.responsible-gaming-box p {
  margin: 0;
  font-size: 0.88rem;
  color: #702525;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 24px;
  margin: 36px 0;
}

.guide-card {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  display: flex;
  flex-direction: column;
}

.guide-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(127, 15, 34, 0.08);
  border-color: var(--wine);
}

.guide-card .card-number {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--wine);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.guide-card h3 {
  margin: 0 0 10px;
  font-size: 1.2rem;
  color: var(--wine-dark);
}

.guide-card p {
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 16px;
  flex-grow: 1;
}

.guide-card .read-more {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--red);
  display: flex;
  align-items: center;
  gap: 4px;
}

footer {
  padding: 32px 0 54px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.82rem;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

footer .footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

footer a {
  color: var(--wine);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

@media (max-width: 650px) {
  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  header nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 6px;
  }
  .guide-grid {
    grid-template-columns: 1fr;
  }
  h1 {
    font-size: 2.1rem;
  }
}