:root {
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #6f00a2;
  --bg: #ffffff;
  --maxw: 860px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); }

body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji",
               "Segoe UI Emoji";
  line-height: 1.7;
}

a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }

.header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 18px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  font-weight: 800;
  font-size: 28px;
  color: var(--accent);
  text-decoration: none;
}

.nav {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  padding-bottom: 6px;
  border-bottom: 2px solid transparent;
}

.nav a[aria-current="page"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 80px 28px;
}

h1 {
  font-size: clamp(34px, 4.5vw, 56px);
  line-height: 1.05;
  margin: 0 0 28px;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 24px;
  margin: 36px 0 10px;
  letter-spacing: -0.015em;
}

h3 {
  font-size: 20px;
  margin: 24px 0 6px;
}

.meta {
  color: var(--muted);
  font-weight: 600;
  margin: 0 0 14px;
}

p { margin: 0 0 18px; color: var(--muted); font-size: 18px; }

.section p { max-width: 70ch; }

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}

.small { font-size: 16px; }

@media (max-width: 640px) {
  .main { padding: 54px 18px; }
  .header-inner { padding: 14px 18px; }
  .brand { font-size: 22px; }
}

.edu-degree {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 6px;
}

.edu-loc {
  font-size: 18px;
  font-weight: 600;
  color: var(--muted);
  font-style: italic;
  margin: 0 0 18px;
}

.section ul {
  color: var(--muted);
  font-size: 18px;
  margin: 0 0 18px;
  padding-left: 1.2em;
}

.section li {
  margin: 6px 0;
}

.section ul li::marker {
  color: var(--muted);
}