:root {
  --bg: #0d1117;
  --card-bg: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --accent-hover: #79c0ff;
  --tag-bg: #1f2937;
  --tag-border: #374151;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  padding: 0 20px;
}
.container { max-width: 860px; margin: 0 auto; padding: 40px 0 60px; }
header { margin-bottom: 48px; border-bottom: 1px solid var(--border); padding-bottom: 32px; }
.badge { display: inline-block; background: #238636; color: #fff; font-size: 12px; font-weight: 600; padding: 2px 10px; border-radius: 20px; margin-bottom: 12px; }
h1 { font-size: 2.2rem; font-weight: 700; margin-bottom: 8px; color: #fff; }
.subtitle { font-size: 1.1rem; color: var(--muted); margin-bottom: 16px; }
.intro { font-size: 1rem; color: var(--text); max-width: 680px; }

section { margin-bottom: 44px; }
h2 { font-size: 1.4rem; font-weight: 600; margin-bottom: 20px; border-left: 4px solid var(--accent); padding-left: 12px; color: #fff; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(360px, 1fr)); gap: 16px; }
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.card:hover { transform: translateY(-2px); border-color: var(--accent); }
.card h3 { font-size: 1.1rem; color: var(--accent); margin-bottom: 8px; }
.card p { font-size: 0.92rem; color: var(--muted); margin-bottom: 14px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { font-size: 0.78rem; background: var(--tag-bg); border: 1px solid var(--tag-border); padding: 2px 8px; border-radius: 4px; color: #9ca3af; }

.skills-list { display: flex; flex-wrap: wrap; gap: 8px; }
.skill-pill { background: var(--card-bg); border: 1px solid var(--border); padding: 6px 14px; border-radius: 6px; font-size: 0.9rem; font-weight: 500; }

.note-item { display: flex; justify-content: space-between; align-items: baseline; padding: 12px 0; border-bottom: 1px dashed var(--border); }
.note-title { color: var(--text); text-decoration: none; font-size: 0.96rem; font-weight: 500; }
.note-title:hover { color: var(--accent); }
.note-date { font-size: 0.85rem; color: var(--muted); }

footer { border-top: 1px solid var(--border); padding-top: 24px; color: var(--muted); font-size: 0.85rem; display: flex; justify-content: space-between; align-items: center; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }