:root {
  --fg: #1b1b1f;
  --muted: #5b6066;
  --bg: #ffffff;
  --soft: #f5f6f8;
  --line: #e6e8eb;
  --accent: #2b6cb0;
  --maxw: 760px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  color: var(--fg);
  background: var(--bg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }

/* header */
.site-header { border-bottom: 1px solid var(--line); background: var(--bg); position: sticky; top: 0; z-index: 10; }
.site-header .bar { display: flex; align-items: center; justify-content: space-between; height: 58px; max-width: 980px; }
.brand { font-weight: 700; color: var(--fg); font-size: 1.05rem; }
.site-header nav a { color: var(--muted); margin-left: 18px; font-size: .95rem; }
.site-header nav a:hover { color: var(--fg); text-decoration: none; }

.content { padding: 34px 20px 60px; }

/* home */
.hero { padding: 26px 0 6px; }
.hero h1 { font-size: 2.1rem; margin: 0 0 4px; }
.hero .tagline { color: var(--muted); font-size: 1.1rem; margin: 0 0 16px; }
.hero .bio { font-size: 1.05rem; max-width: 640px; }
.hero .links { color: var(--muted); margin-top: 14px; }

.projects { margin-top: 34px; }
.projects h2 { font-size: 1.2rem; border-bottom: 1px solid var(--line); padding-bottom: 8px; }
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 18px; }
@media (max-width: 680px) { .grid { grid-template-columns: 1fr; } }
.card {
  display: flex; flex-direction: column;
  border: 1px solid var(--line); border-radius: 12px; overflow: hidden;
  color: inherit; background: var(--bg); transition: box-shadow .15s, transform .15s;
}
.card:hover { box-shadow: 0 6px 22px rgba(0,0,0,.08); transform: translateY(-2px); text-decoration: none; }
.card .thumb { background: var(--soft); aspect-ratio: 16 / 9; overflow: hidden; }
.card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.card-body { padding: 14px 16px; }
.card-body h3 { margin: 0 0 6px; font-size: 1.05rem; color: var(--fg); }
.card-body p { margin: 0; color: var(--muted); font-size: .94rem; }

/* project page */
.project .back { margin: 0 0 8px; color: var(--muted); }
.project h1 { font-size: 2rem; line-height: 1.2; margin: .2em 0 .1em; }
.project .lede { font-size: 1.15rem; color: var(--muted); margin: .2em 0; }
.project .meta { color: var(--muted); font-size: .92rem; margin: .4em 0 1.4em; padding-bottom: 1.2em; border-bottom: 1px solid var(--line); }
.project h2 { font-size: 1.4rem; margin-top: 1.8em; }
.project img { display: block; margin: 1.4em auto; border-radius: 8px; }
.project blockquote { margin: 1.4em 0; padding: .6em 1.1em; border-left: 4px solid var(--accent); background: var(--soft); border-radius: 0 8px 8px 0; color: #34373b; }
.project blockquote p { margin: .3em 0; }
.project table { border-collapse: collapse; width: 100%; margin: 1.4em 0; font-size: .93rem; }
.project th, .project td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; }
.project thead th { background: var(--soft); }
.project code { background: var(--soft); padding: .1em .35em; border-radius: 4px; font-size: .9em; }
.project pre { background: var(--soft); padding: 14px 16px; border-radius: 8px; overflow-x: auto; }
.project pre code { background: none; padding: 0; }
.project hr { border: none; border-top: 1px solid var(--line); margin: 2em 0; }

/* footer */
.site-footer { border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; padding: 22px 0; margin-top: 40px; }
.site-footer .wrap { max-width: 980px; }