/* Shared base for the design concepts. Black and white, Geist, light and dark. */
@font-face { font-family: Geist; src: url(../assets/geist.ttf) format("truetype"); font-weight: 100 900; font-display: swap; }
:root { --bg: #fff; --fg: #000; --soft: #f4f4f4; --soft2: #ececec; --line: #e7e7e7; --muted: #666; --faint: #9e9e9e; --tile-dark: #000; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #000; --fg: #fff; --soft: #101010; --soft2: #171717; --line: #232323; --muted: #9b9b9b; --faint: #5e5e5e; --tile-dark: #fff; }
  .inv { filter: invert(1); }
}
* { box-sizing: border-box; margin: 0; }
html { -webkit-font-smoothing: antialiased; scroll-behavior: smooth; }
body { background: var(--bg); color: var(--fg); font: 16px/1.5 Geist, system-ui, sans-serif; overflow-x: clip; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.nav { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 28px; padding: 18px 40px; font-size: 14.5px;
  background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); }
.nav .brand { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 17px; margin-right: auto; }
.nav .links { display: flex; gap: 28px; color: var(--muted); }
.nav .links a:hover { color: var(--fg); }
.btn { display: inline-flex; align-items: center; gap: 8px; height: 46px; padding: 0 22px; border-radius: 23px; background: var(--fg); color: var(--bg); font-weight: 500; font-size: 15px; transition: opacity .2s; }
.btn:hover { opacity: .82; }
.btn.ghost { background: transparent; color: var(--fg); box-shadow: inset 0 0 0 1px var(--line); }
.btn svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.foot { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; padding: 34px 40px 44px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.foot .brand { display: flex; align-items: center; gap: 10px; color: var(--fg); font-weight: 600; margin-right: auto; }
.foot nav { display: flex; flex-wrap: wrap; gap: 20px; }
.foot a:hover { color: var(--fg); }
/* reveal on scroll (only when JS runs) */
.js .rv { opacity: 0; transform: translateY(26px); transition: opacity .8s, transform .9s cubic-bezier(.2,.7,.2,1); }
.js .rv.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js .rv { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } }
@media (max-width: 760px) { .nav .links { display: none; } .nav { padding: 14px 20px; } .foot { padding: 28px 20px 36px; } }