:root {
  --bg: #f7f7f5; --bg-elevated: #fff; --bg-subtle: #efefec;
  --fg: #111113; --fg-muted: #5c5c66; --fg-subtle: #8b8b96;
  --border: #e4e4e0; --border-strong: #d0d0ca;
  --accent: #111113; --accent-fg: #f7f7f5;
  --radius: 0.75rem; --shadow: 0 1px 2px rgb(17 17 19 / 0.04), 0 8px 24px rgb(17 17 19 / 0.04);
  --font: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font); background: var(--bg); color: var(--fg); -webkit-font-smoothing: antialiased; line-height: 1.5; }
a { color: inherit; text-decoration: none; }
.wrap { max-width: 72rem; margin: 0 auto; padding: 0 1.25rem; }
@media (min-width: 640px) { .wrap { padding: 0 2rem; } }
header.site { position: sticky; top: 0; z-index: 50; border-bottom: 1px solid #e4e4e0; background: rgba(247,247,245,0.9); backdrop-filter: blur(10px); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 3.75rem; }
.brand { display: flex; align-items: center; gap: 0.65rem; font-weight: 600; font-size: 0.9rem; }
.mark { width: 1.75rem; height: 1.75rem; border-radius: 0.4rem; background: var(--accent); color: var(--accent-fg); display: grid; place-items: center; font-size: 0.7rem; font-weight: 600; }
.links { display: none; gap: 0.15rem; }
.links a { color: var(--fg-muted); font-size: 0.9rem; padding: 0.5rem 0.75rem; border-radius: 0.4rem; }
.links a:hover, .links a[aria-current="page"] { color: var(--fg); }
@media (min-width: 768px) { .links { display: flex; } .menu-btn { display: none !important; } }
.menu-btn { border: 1px solid var(--border); background: var(--bg-elevated); border-radius: 0.5rem; width: 2.75rem; height: 2.75rem; font-size: 1.1rem; cursor: pointer; }
.mobile { display: none; border-top: 1px solid var(--border); background: var(--bg-elevated); }
.mobile.open { display: block; }
.mobile a { display: block; padding: 0.85rem 0; border-bottom: 1px solid var(--border); }
.hero { display: grid; gap: 3rem; padding: 4rem 0 5rem; border-bottom: 1px solid var(--border); }
@media (min-width: 1024px) { .hero { grid-template-columns: 1.2fr 0.8fr; align-items: end; padding: 6rem 0; } }
.kicker { font-size: 0.75rem; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-subtle); margin: 0 0 1rem; }
h1 { font-size: clamp(2rem, 4vw, 3.25rem); line-height: 1.08; letter-spacing: -0.03em; font-weight: 600; margin: 0 0 1.25rem; text-wrap: balance; }
h2 { font-size: clamp(1.5rem, 2.5vw, 1.875rem); letter-spacing: -0.02em; font-weight: 600; margin: 0 0 0.75rem; }
.lede { font-size: clamp(1.05rem, 1.5vw, 1.25rem); color: var(--fg-muted); max-width: 36rem; margin: 0 0 1.75rem; }
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem; height: 2.75rem; padding: 0 1.25rem; border-radius: 0.5rem; font-size: 0.9rem; font-weight: 500; border: 1px solid transparent; cursor: pointer; }
.btn-primary { background: var(--accent); color: var(--accent-fg); }
.btn-primary:hover { opacity: 0.92; }
.btn-secondary { background: var(--bg-elevated); border-color: var(--border-strong); }
.btn-secondary:hover { background: var(--bg-subtle); }
.btn-ghost { color: var(--fg-muted); }
.panel { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; box-shadow: var(--shadow); }
.panel ul { margin: 1rem 0 0; padding: 0; list-style: none; }
.panel li { color: var(--fg-muted); font-size: 0.9rem; padding: 0.75rem 0; border-bottom: 1px solid var(--border); }
.panel li:last-child { border-bottom: 0; }
section.block { padding: 4rem 0; border-bottom: 1px solid var(--border); }
.section-head { display: flex; flex-direction: column; gap: 0.75rem; margin-bottom: 2.5rem; max-width: 40rem; }
.section-head p.sub { color: var(--fg-muted); font-size: 0.9rem; margin: 0; }
.grid-4 { display: grid; gap: 0.75rem; }
@media (min-width: 640px) { .grid-4 { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .grid-4 { grid-template-columns: repeat(4, 1fr); } }
.card { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 0.625rem; padding: 1.25rem; }
.card:hover { border-color: var(--border-strong); }
.card h3 { font-size: 0.95rem; margin: 0 0 0.6rem; letter-spacing: -0.01em; }
.card p { margin: 0; font-size: 0.875rem; color: var(--fg-muted); line-height: 1.55; }
.grid-2 { display: grid; gap: 1rem; }
@media (min-width: 768px) { .grid-2 { grid-template-columns: 1fr 1fr; } }
.project { display: flex; flex-direction: column; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; box-shadow: var(--shadow); }
.project:hover { border-color: var(--border-strong); }
.meta { display: flex; justify-content: space-between; gap: 0.75rem; align-items: flex-start; }
.badge { font-size: 0.7rem; border: 1px solid var(--border); border-radius: 999px; padding: 0.2rem 0.65rem; color: var(--fg-muted); white-space: nowrap; }
.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 1.1rem; }
.tag { background: var(--bg-subtle); color: var(--fg-muted); font-size: 0.75rem; padding: 0.2rem 0.5rem; border-radius: 0.35rem; }
.list { border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-elevated); overflow: hidden; }
.list a { display: block; padding: 1.15rem 1.35rem; border-bottom: 1px solid var(--border); }
.list a:last-child { border-bottom: 0; }
.list a:hover { background: #f3f3f0; }
footer.site { border-top: 1px solid var(--border); background: var(--bg-elevated); margin-top: auto; }
.foot { display: grid; gap: 2rem; padding: 3rem 0; }
@media (min-width: 768px) { .foot { grid-template-columns: 1fr 1fr; } }
.muted { color: var(--fg-muted); font-size: 0.9rem; }
.subtle { color: var(--fg-subtle); font-size: 0.75rem; }
.prose { max-width: 42rem; }
.prose p { color: var(--fg-muted); font-size: 1rem; line-height: 1.7; }
.page-hero { padding: 3rem 0 1rem; }
ol.steps { list-style: none; padding: 0; margin: 0; }
ol.steps li { display: flex; gap: 0.75rem; color: var(--fg-muted); margin-bottom: 0.85rem; }
ol.steps span.n { font-family: ui-monospace, monospace; font-size: 0.75rem; color: var(--fg-subtle); margin-top: 0.2rem; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 1rem; top: 1rem; z-index: 100; background: var(--accent); color: var(--accent-fg); padding: 0.5rem 0.75rem; border-radius: 0.4rem; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }