:root {
  --tl-bg: #0f1b2d;
  --tl-bg-soft: #162640;
  --tl-accent: #3ba2ff;
  --tl-accent-dark: #1b6dc5;
  --tl-text: #e9f1fb;
  --tl-muted: #b7c6d9;
  --tl-card: #15243a;
  --tl-border: rgba(255, 255, 255, 0.08);
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: radial-gradient(circle at top, #1a2b49 0%, var(--tl-bg) 60%);
  color: var(--tl-text);
}

a {
  color: var(--tl-accent);
  text-decoration: none;
}

a:hover {
  color: #5bb5ff;
}

.navbar {
  background: rgba(10, 18, 32, 0.9);
  border-bottom: 1px solid var(--tl-border);
}

.navbar-brand {
  font-weight: 700;
  letter-spacing: 0.6px;
  color: var(--tl-text);
}

.navbar-nav .nav-link {
  color: var(--tl-muted);
  font-weight: 500;
}

.navbar-nav .nav-link.active,
.navbar-nav .nav-link:hover {
  color: var(--tl-text);
}

.hero {
  padding: 80px 0 70px;
}

.hero-card {
  background: linear-gradient(135deg, rgba(59, 162, 255, 0.15), rgba(21, 36, 58, 0.9));
  border: 1px solid var(--tl-border);
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

.hero h1 {
  font-size: clamp(2.3rem, 4vw, 3.4rem);
  font-weight: 700;
  margin-bottom: 20px;
}

.hero p {
  color: var(--tl-muted);
  font-size: 1.1rem;
  max-width: 640px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--tl-accent), var(--tl-accent-dark));
  border: none;
  border-radius: 10px;
  padding: 12px 22px;
  font-weight: 600;
}

.section-title {
  font-size: 1.7rem;
  font-weight: 700;
  margin-bottom: 25px;
}

.tl-card {
  background: var(--tl-card);
  border: 1px solid var(--tl-border);
  border-radius: 16px;
  padding: 24px;
  height: 100%;
}

.tl-card h3,
.tl-card h4 {
  font-weight: 600;
}

.tl-card p,
.tl-card li {
  color: var(--tl-muted);
}

.list-check {
  list-style: none;
  padding-left: 0;
}

.list-check li {
  padding-left: 28px;
  position: relative;
  margin-bottom: 12px;
}

.list-check li::before {
  content: "✔";
  position: absolute;
  left: 0;
  color: var(--tl-accent);
}

.article-card {
  border: 1px solid var(--tl-border);
  border-radius: 14px;
  padding: 20px;
  height: 100%;
  background: rgba(21, 36, 58, 0.8);
}

.article-card h5 {
  font-weight: 600;
  margin-bottom: 12px;
}

.breadcrumb {
  background: transparent;
  padding: 0;
  margin-bottom: 25px;
}

footer {
  border-top: 1px solid var(--tl-border);
  padding: 30px 0;
  color: var(--tl-muted);
  font-size: 0.95rem;
}

footer a {
  color: var(--tl-muted);
}

footer a:hover {
  color: var(--tl-text);
}

@media (max-width: 768px) {
  .hero-card {
    padding: 28px;
  }
}