:root {
  --bg: #0a0b0d;
  --bg-elevated: #121316;
  --border: #24262b;
  --text: #e8e9ec;
  --text-dim: #8a8d96;
  --accent: #5eead4;
  --accent-dim: #1c3d38;
  --mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.logo-mark {
  display: inline-block;
  width: 34px;
  height: 34px;
  object-fit: contain;
}

.topnav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 24px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 15px;
  letter-spacing: 0.02em;
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-link {
  font-size: 14px;
  color: var(--text-dim);
  border: 1px solid var(--border);
  padding: 7px 14px;
  border-radius: 6px;
  transition: border-color 0.15s, color 0.15s;
}
.nav-link:hover {
  color: var(--text);
  border-color: var(--accent);
}

.hero {
  background:
    radial-gradient(circle at 15% 0%, rgba(94, 234, 212, 0.08), transparent 45%),
    radial-gradient(circle at 85% 20%, rgba(94, 234, 212, 0.05), transparent 40%);
  border-bottom: 1px solid var(--border);
}

.hero-content {
  max-width: 760px;
  margin: 0 auto;
  padding: 120px 24px 140px;
  text-align: left;
}

.hero-content h1 {
  font-family: var(--mono);
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}

.tagline {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--accent);
  margin: 0 0 20px;
  font-weight: 500;
}

.lede {
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 0 36px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  font-size: 14px;
  font-weight: 600;
  padding: 12px 22px;
  border-radius: 8px;
  border: 1px solid transparent;
  transition: opacity 0.15s, border-color 0.15s;
}

.btn-primary {
  background: var(--accent);
  color: #06201b;
}
.btn-primary:hover { opacity: 0.88; }

.btn-secondary {
  border-color: var(--border);
  color: var(--text);
}
.btn-secondary:hover { border-color: var(--accent); }

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 90px 24px;
}

.section-head {
  margin-bottom: 28px;
}

.section-head h2 {
  font-family: var(--mono);
  font-size: 1.6rem;
  margin: 0 0 10px;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.project-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
  transition: border-color 0.15s, transform 0.15s;
}
.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.project-card-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.project-mark {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  object-fit: cover;
}

.project-card h3 {
  margin: 0;
  font-size: 1.15rem;
}

.project-desc {
  margin: 0 0 22px;
  color: var(--text-dim);
  font-size: 0.92rem;
  line-height: 1.6;
}

.project-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.project-link {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--text-dim);
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 999px;
  transition: color 0.15s, border-color 0.15s;
}
.project-link:hover {
  color: var(--text);
  border-color: var(--accent);
}

.project-link svg {
  width: 14px;
  height: 14px;
}

.site-footer {
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-dim);
}

.footer-inner a { color: var(--text-dim); }
.footer-inner a:hover { color: var(--accent); }

@media (max-width: 600px) {
  .hero-content { padding: 90px 24px 90px; }
}