/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #0f1117;
  --bg-card: #1a1d27;
  --bg-card-hover: #1f2335;
  --accent: #6c8ebf;
  --accent-2: #5a7ba8;
  --text: #e8eaf0;
  --text-muted: #8b90a0;
  --border: #2a2d3e;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, #0f1117 0%, #161924 50%, #0f1117 100%);
  border-bottom: 1px solid var(--border);
  padding: 72px 24px 64px;
  text-align: center;
}

.hero-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #4a6fa5);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  margin: 0 auto 24px;
  box-shadow: 0 0 0 4px rgba(108,142,191,0.2);
  letter-spacing: -1px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
  color: #fff;
}

.hero h1 span {
  color: var(--accent);
}

.hero p {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.7;
}

/* Main content */
main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 64px 24px;
}

.section-title {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 32px;
}

/* Cards grid */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@media (max-width: 900px) {
  .cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .cards {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
  background: var(--bg-card-hover);
}

.card-logo {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}

.card-logo img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.card-logo .fallback {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  display: none;
}

.card-logo img.errored {
  display: none;
}

.card-logo img.errored + .fallback {
  display: block;
}

.card-header {
  display: flex;
  align-items: center;
  gap: 14px;
}

.card h2 {
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.3;
}

.card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
  flex: 1;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease, color 0.15s ease;
  width: fit-content;
  margin-top: 4px;
}

.card-link:hover {
  color: #fff;
  border-bottom-color: var(--accent);
}

.card-link svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

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

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