/* Layout */
* { box-sizing: border-box; }
body { margin: 0; color: #222; background: #fff; font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }
.page { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
@media (max-width: 900px) { .page { grid-template-columns: 1fr; } }

/* Sidebar (left menu) */
.sidebar { background: #f7f7f7; border-right: 1px solid #e5e5e5; padding: 20px; }
.site-title { font-weight: 700; margin-bottom: 8px; }
.site-title a { text-decoration: none; color: #000; }
.nav ul { list-style: none; padding: 0; margin: 12px 0 0; }
.nav li { margin: 6px 0; }
.nav a { color: #1a0dab; text-decoration: none; }
.nav a:hover { text-decoration: underline; }
.sidebar-footer { margin-top: 24px; color: #666; }

/* Main content */
.content { padding: 28px 32px; max-width: 980px; }
.page-title { margin-top: 0; font-size: 28px; line-height: 1.2; }
h1, h2, h3 { font-weight: 700; }
h2 { border-bottom: 1px solid #eee; padding-bottom: 4px; margin-top: 28px; }
hr { border: 0; border-top: 1px solid #eee; margin: 20px 0; }

/* Links */
a { color: #1a0dab; }
a:hover { text-decoration: underline; }

/* Definition-ish sections */
strong, b { font-weight: 600; }

/* Tables (schedule) */
table { width: 100%; border-collapse: collapse; margin: 18px 0; }
th, td { padding: 8px 10px; vertical-align: top; }
th { text-align: left; border-bottom: 2px solid #ddd; }
tr + tr td { border-top: 1px solid #eee; }

/* Code blocks (if any) */
pre, code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace; }
pre { background: #f6f8fa; padding: 10px; overflow: auto; border: 1px solid #eee; border-radius: 4px; }