:root {
  --ink: #14161c;
  --ink-soft: #4a5160;
  --muted: #737b8c;
  --line: #e6e8ee;
  --bg: #ffffff;
  --bg-soft: #f6f7fb;
  --brand: #3a2fb0;      /* PERT indigo */
  --brand-2: #7b5cff;    /* accent violet */
  --brand-ink: #ffffff;
  --radius: 14px;
  --maxw: 1080px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  font-size: 17px;
}

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

h1 { font-size: clamp(2rem, 5vw, 3rem); line-height: 1.1; letter-spacing: -0.02em; margin: 0 0 .5em; }
h2 { font-size: 1.5rem; letter-spacing: -0.01em; margin: 2rem 0 .75rem; }
h3 { font-size: 1.15rem; margin: 0 0 .5rem; }
h4 { font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 0 0 .75rem; }

.muted { color: var(--muted); }
.small { font-size: .875rem; }
.eyebrow { text-transform: uppercase; letter-spacing: .1em; font-size: .78rem; font-weight: 600; color: var(--brand-2); margin: 0 0 .5rem; }
.lede { font-size: 1.2rem; color: var(--ink-soft); max-width: 60ch; }

/* Header / nav */
.site-header { border-bottom: 1px solid var(--line); position: sticky; top: 0; background: rgba(255,255,255,.85); backdrop-filter: saturate(180%) blur(10px); z-index: 10; }
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: inline-flex; align-items: center; }
.brand img { display: block; }
.nav-links { display: flex; gap: 26px; }
.nav-links a { color: var(--ink-soft); font-weight: 500; font-size: .95rem; }
.nav-links a:hover { color: var(--brand); text-decoration: none; }

/* Buttons */
.btn { display: inline-block; padding: 11px 20px; border-radius: 999px; font-weight: 600; font-size: .95rem; border: 1px solid transparent; transition: transform .05s ease, box-shadow .15s ease; }
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--brand); color: var(--brand-ink); }
.btn-primary:hover { box-shadow: 0 8px 22px rgba(58,47,176,.28); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: var(--bg); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }
.cta-row, .store-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 1.5rem; }

/* Hero */
.hero { background: linear-gradient(180deg, var(--bg-soft), var(--bg)); padding: 72px 0 56px; border-bottom: 1px solid var(--line); }

/* Sections */
.section { padding: 48px 0; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.card { border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; background: var(--bg); }
.card h3 { color: var(--brand); }

/* App list */
.app-list { display: flex; flex-direction: column; gap: 10px; margin-top: 1rem; }
.app-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; padding: 18px 20px; border: 1px solid var(--line); border-radius: var(--radius); color: var(--ink); background: var(--bg); }
.app-row:hover { border-color: var(--brand); text-decoration: none; box-shadow: 0 6px 18px rgba(20,22,28,.06); }
.app-name { font-weight: 700; font-size: 1.05rem; }
.app-tagline { flex: 1 1 260px; }
.badge { font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--brand-2); background: rgba(123,92,255,.1); padding: 3px 9px; border-radius: 999px; }

/* Prose */
.prose { max-width: 68ch; }
.prose p { color: var(--ink-soft); }
.features { padding-left: 1.2em; }
.features li { margin: .4em 0; color: var(--ink-soft); }
.callout { border: 1px solid var(--line); border-left: 4px solid var(--brand); background: var(--bg-soft); border-radius: var(--radius); padding: 20px 24px; margin: 1rem 0; }
.callout h2 { margin-top: 0; }
.app-legal { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--line); }

/* Footer */
.site-footer { border-top: 1px solid var(--line); background: var(--bg-soft); margin-top: 64px; padding: 48px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
.footer-grid h4 { margin-top: 4px; }
.footer-grid a { display: block; color: var(--ink-soft); margin: .3em 0; font-size: .95rem; }
.footer-logo { margin-bottom: 10px; }
.copyright { margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--line); }

@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { gap: 16px; }
}