:root {
  --bg: #ffffff;
  --soft: #f6f6f4;
  --line: #e7e7e3;
  --ink: #111111;
  --muted: #6b6b66;
  --you: #2563eb;
  --red: #e5484d;
  --red-soft: #fde8e8;
  --amber: #f0a000;
  --amber-soft: #fff3d6;
  --green: #22a06b;
  --green-soft: #dcf5e8;
  --grey-dot: #dcdcd8;
  --r: 14px;
  --w: 1120px;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 16px/1.5 Geist, system-ui, -apple-system, sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
h1, h2, h3, p { margin: 0; }
h1, h2 { letter-spacing: -0.035em; line-height: 1.05; font-weight: 600; }
h2 { font-size: clamp(26px, 3vw, 36px); }
:focus-visible { outline: 3px solid var(--you); outline-offset: 2px; }
.wrap { max-width: var(--w); margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); }

/* Sticky top bar, shared by every page */
.topbar { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.94); backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 84px; max-width: var(--w); margin: 0 auto; padding: 0 20px; }
html { scroll-padding-top: 100px; }
.word { font-weight: 600; letter-spacing: -0.02em; font-size: 20px; text-decoration: none; display: inline-flex; align-items: center; gap: 8px; }
.word img { width: 34px; height: 34px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 48px; padding: 0 22px; border-radius: 999px; border: 0; background: var(--ink); color: #fff; font: 500 17px/1 Geist, sans-serif; text-decoration: none; cursor: pointer; transition: transform .15s, opacity .15s; white-space: nowrap; }
.btn:hover { opacity: .88; } .btn:active { transform: scale(.98); }
.btn.light { background: #fff; color: var(--ink); }
.btn.ghost { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1px var(--line); }
.btn[disabled] { opacity: .5; cursor: progress; }

.card { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 22px; }
.logos { display: flex; gap: 22px; flex-wrap: wrap; align-items: center; justify-content: center; }
.logos span { display: inline-flex; align-items: center; gap: 8px; font-size: 15px; color: var(--muted); }
.logos img, .ai img { width: 18px; height: 18px; opacity: .85; }

.foot { border-top: 1px solid var(--line); margin-top: 96px; padding: 28px 0 40px; font-size: 16px; color: var(--muted); }
.foot .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.foot a { text-decoration: none; } .foot a:hover { color: var(--ink); }

.fade { animation: fade .6s ease both; }
@keyframes fade { from { opacity: 0; transform: translateY(10px); } }
@media (prefers-reduced-motion: reduce) { .fade { animation: none; } html { scroll-behavior: auto; } }