:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-soft: #dbeafe;
  --border: #e5e7eb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.site-nav {
  border-bottom: 1px solid var(--border);
  background: var(--surface) !important;
}

.site-nav .nav-link {
  color: var(--muted);
  font-weight: 600;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.site-nav .nav-link:hover,
.site-nav .nav-link.active {
  color: var(--primary);
  background: var(--primary-soft);
}

.page-wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 3rem;
}

.hero {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
}

.hero-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 2rem;
  align-items: start;
}

.profile-image {
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--border);
  object-fit: cover;
}

.title {
  margin: 0;
  font-size: 2.1rem;
  line-height: 1.2;
}

.subtitle {
  margin-top: 0.5rem;
  color: var(--muted);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.25rem;
  margin-top: 1rem;
}

.card p:last-child {
  margin-bottom: 0;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.1rem;
}

.btn-link {
  text-decoration: none;
  padding: 0.55rem 0.95rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  color: var(--text);
  font-weight: 600;
  background: #fff;
}

.btn-link.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.section-title {
  margin: 0;
  font-size: 1.8rem;
}

.section-intro {
  margin-top: 0.45rem;
  color: var(--muted);
}

.project-list {
  display: grid;
  gap: 0.9rem;
  margin-top: 1rem;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.1rem;
}

.project-card h3 {
  margin: 0;
  font-size: 1.05rem;
}

.project-card p {
  margin: 0.45rem 0 0.7rem;
}

.project-card a {
  color: var(--primary);
  font-weight: 600;
  text-decoration: none;
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .profile-image {
    max-width: 340px;
  }
}