:root {
  --ink: #14202b;
  --muted: #5a6a78;
  --line: #d9e0e6;
  --accent: #1f6feb;
  --paper: #ffffff;
  --wash: #f4f7fa;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 16px/1.6 "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(16px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
}

.site-header nav {
  display: flex;
  gap: 20px;
}

.site-header nav a {
  color: var(--muted);
  text-decoration: none;
}

.site-header nav a:hover { color: var(--ink); }

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 clamp(16px, 5vw, 64px) 64px;
}

.hero {
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--line);
}

.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.2;
}

.hero p {
  margin: 0 0 24px;
  max-width: 620px;
  color: var(--muted);
}

.button {
  display: inline-block;
  padding: 12px 20px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
}

h2 {
  margin: 48px 0 16px;
  font-size: 22px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.cards article {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--wash);
}

.cards h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

.cards p { margin: 0; color: var(--muted); }

.projects {
  margin: 0;
  padding-left: 20px;
}

.projects li { margin-bottom: 8px; }

.site-footer {
  padding: 24px clamp(16px, 5vw, 64px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}