*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:         #ffffff;
  --bg-alt:     #f7f8f9;
  --text:       #111827;
  --text-2:     #4b5563;
  --accent:     #0f766e;
  --accent-dim: #e6f4f3;
  --border:     #e5e7eb;
  --mono:       'JetBrains Mono', 'Fira Mono', monospace;
  --sans:       'Inter', system-ui, -apple-system, sans-serif;
  --nav-h:      64px;
  --radius:     8px;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.mono { font-family: var(--mono); }

/* ===== Navbar ===== */
#navbar {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  height: var(--nav-h);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.nav-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
}

.nav-brand {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-2);
  letter-spacing: 0.04em;
}

/* ===== Main ===== */
main {
  flex: 1;
  padding-top: var(--nav-h);
}

/* ===== Landing hero ===== */
.landing-hero {
  text-align: center;
  padding: 6rem 1.5rem 4rem;
}

.landing-tag {
  font-size: 0.68rem;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  display: block;
}

.landing-hero h1 {
  font-size: clamp(3.5rem, 10vw, 6rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 1rem;
}

.landing-subtitle {
  font-size: 1.05rem;
  color: var(--text-2);
  max-width: 380px;
  margin: 0 auto;
}

/* ===== Profiles grid ===== */
.profiles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem 6rem;
}

.profile-card {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.18s;
}

.profile-card:hover {
  border-color: var(--accent);
  box-shadow: 0 6px 28px rgba(15, 118, 110, 0.09);
  transform: translateY(-2px);
}

.card-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent-dim);
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.card-body { flex: 1; }

.card-label {
  font-size: 0.68rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
  display: block;
}

.card-name {
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 0.35rem;
  color: var(--text);
}

.card-title {
  font-size: 0.9rem;
  color: var(--text-2);
  font-weight: 500;
  margin-bottom: 0.9rem;
}

.card-desc {
  font-size: 0.875rem;
  color: var(--text-2);
  line-height: 1.7;
}

.card-cta {
  font-size: 0.875rem;
  color: var(--accent);
  font-weight: 500;
  margin-top: auto;
}

/* ===== Footer ===== */
footer {
  padding: 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-text {
  font-size: 0.75rem;
  color: var(--text-2);
  letter-spacing: 0.04em;
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
  .profiles-grid {
    grid-template-columns: 1fr;
  }

  .landing-hero {
    padding: 4rem 1.5rem 3rem;
  }
}