:root {
  color-scheme: dark;
  --bg: #1c1c1e;
  --bg2: #2c2c2e;
  --bg3: #3a3a3c;
  --line: #3a3a3c;
  --text: #f2f2f7;
  --muted: #c7c7cc;
  --dim: #98989d;
  --accent: #0a84ff;
  --accent-2: #64d2ff;
  --green: #30d158;
  --heart: #ff5c8a;
  --radius: 14px;
  --wrap: 1040px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 1.25rem; }

a { color: var(--accent-2); }

h1, h2, h3 { line-height: 1.2; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 5vw, 3rem); margin: 0 0 0.6rem; }
h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); margin: 3.5rem 0 0.75rem; }
h3 { font-size: 1.1rem; margin: 0 0 0.35rem; }
p { color: var(--muted); margin: 0 0 1rem; }
section { scroll-margin-top: 5rem; }
.lede { font-size: 1.15rem; color: var(--muted); }

/* Header ------------------------------------------------------------------ */
header.site {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(28, 28, 30, 0.82);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line);
}
header.site .wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
  justify-content: space-between;
  height: 3.75rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}
.brand img { border-radius: 7px; }
nav.main { display: flex; align-items: center; gap: 1.1rem; flex-wrap: wrap; }
nav.main a { color: var(--muted); text-decoration: none; font-size: 0.94rem; }
nav.main a:hover { color: var(--text); }
nav.main a.active { color: var(--text); font-weight: 600; }
nav.main a.donate { color: var(--heart); }
nav.main a.donate:hover { color: var(--heart); }

/* Buttons ----------------------------------------------------------------- */
.actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 0.7rem 1.3rem;
  border-radius: 10px;
  font-weight: 600;
  text-decoration: none;
  background: var(--accent);
  color: #fff;
  border: 1px solid transparent;
}
.btn:hover { background: #3395ff; }
.btn.secondary { background: var(--bg2); color: var(--text); border-color: var(--line); }
.btn.secondary:hover { background: var(--bg3); }
.btn.small { padding: 0.45rem 0.9rem; font-size: 0.9rem; }

/* Hero -------------------------------------------------------------------- */
.hero { text-align: center; padding: 4rem 0 1rem; }
.hero .icon {
  width: 112px;
  height: 112px;
  border-radius: 26px;
  margin-bottom: 1.2rem;
}
.hero .subtitle { font-size: clamp(1.15rem, 2.6vw, 1.5rem); font-weight: 500; color: var(--muted); margin: 0 0 1.25rem; }
.hero .lede { max-width: 46rem; margin: 0 auto 1.5rem; }
.hero .actions { justify-content: center; }
.meta { font-size: 0.9rem; color: var(--dim); margin-top: 1.1rem; }

img.shot {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--line);
  margin: 2.5rem 0 0;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}
img.shot.small { box-shadow: none; margin: 1.25rem 0; }

/* Cards ------------------------------------------------------------------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}
.card {
  background: var(--bg2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem 1.25rem;
}
.card h3 { color: var(--text); }
.card p { margin: 0; font-size: 0.95rem; }

/* Tables ------------------------------------------------------------------ */
.table-scroll { overflow-x: auto; margin: 1.5rem 0; }
table.compare {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  min-width: 560px;
}
table.compare th, table.compare td {
  text-align: left;
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--line);
}
table.compare thead th { color: var(--text); }
table.compare tbody td { color: var(--muted); }
table.compare tbody td:first-child { color: var(--text); }
table.compare .yes { color: var(--green); font-weight: 600; }
table.compare .no { color: var(--dim); }
table.compare .limited { color: var(--dim); }
table.compare .col-hi { background: rgba(10, 132, 255, 0.08); }
.note { font-size: 0.85rem; color: var(--dim); }

/* FAQ --------------------------------------------------------------------- */
details.faq {
  background: var(--bg2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.4rem 1.1rem;
  margin: 0 0 0.75rem;
}
details.faq summary {
  cursor: pointer;
  font-weight: 600;
  padding: 0.7rem 0;
  list-style: none;
}
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after { content: " +"; color: var(--dim); }
details.faq[open] summary::after { content: " –"; }
details.faq p { margin: 0 0 1rem; }

/* Prose (guides, articles) ----------------------------------------------- */
.prose { max-width: 48rem; }
.prose h2 { margin-top: 2.5rem; }
.prose ul, .prose ol { color: var(--muted); padding-left: 1.3rem; }
.prose li { margin-bottom: 0.4rem; }
.prose img { max-width: 100%; height: auto; border-radius: 10px; border: 1px solid var(--line); }
.prose pre {
  background: var(--bg2);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1rem;
  overflow-x: auto;
}
.prose code { background: var(--bg2); padding: 0.15em 0.4em; border-radius: 5px; font-size: 0.9em; }
.prose pre code { background: none; padding: 0; }
.callout {
  background: rgba(10, 132, 255, 0.08);
  border: 1px solid rgba(10, 132, 255, 0.35);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}
.callout p:last-child { margin: 0; }

.crumbs { font-size: 0.85rem; color: var(--dim); margin: 1.5rem 0 0; }
.crumbs a { color: var(--dim); }

/* Footer ------------------------------------------------------------------ */
footer.site {
  margin-top: 5rem;
  padding: 2.5rem 0 3.5rem;
  border-top: 1px solid var(--line);
  color: var(--dim);
  font-size: 0.9rem;
}
footer.site a { color: var(--muted); }
footer.site a.donate { color: var(--heart); }
footer.site .links { display: flex; gap: 1.1rem; flex-wrap: wrap; margin-bottom: 1rem; }

@media (max-width: 640px) {
  header.site .wrap {
    height: auto;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.4rem 1rem;
    padding-top: 0.55rem;
    padding-bottom: 0.55rem;
  }
  nav.main { gap: 0.4rem 1rem; justify-content: center; }
  nav.main a { font-size: 0.9rem; }
  nav.main .btn.small { padding: 0.4rem 0.8rem; }
  .hero { padding-top: 2.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}