:root {
  color-scheme: light dark;
  --ground: #FAFAF8;
  --raised: #FFFFFF;
  --ink: #16161A;
  --muted: #64646B;
  --rule: #E4E4DF;
  --accent: #2F5D50;
  --shadow: 0 1px 2px rgba(20,20,25,.05), 0 10px 30px -14px rgba(20,20,25,.28);
}

@media (prefers-color-scheme: dark) {
  :root {
    --ground: #0E0F11;
    --raised: #17181B;
    --ink: #F4F4F2;
    --muted: #9B9BA3;
    --rule: #26262B;
    --accent: #7FB3A3;
    --shadow: 0 1px 2px rgba(0,0,0,.5), 0 10px 30px -14px rgba(0,0,0,.8);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

main { max-width: 52rem; margin: 0 auto; padding: 4rem 1.25rem 5rem; }

h1, h2, h3 { line-height: 1.12; text-wrap: balance; }
p { margin: 0 0 1rem; }

/* per-product accent, set inline; falls back to the site accent */
[data-accent] { --p: var(--accent); }
@media (prefers-color-scheme: dark) { [data-accent-dark] { --p: var(--pd, var(--accent)); } }

a { color: var(--p, var(--accent)); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:focus-visible { outline: 2px solid var(--p, var(--accent)); outline-offset: 3px; border-radius: 4px; }

/* ---------- icon tiles ---------- */
.tile {
  display: block;
  border-radius: 22.37%;
  box-shadow: var(--shadow), inset 0 0 0 1px rgba(255,255,255,.07);
  flex: 0 0 auto;
}

/* ---------- home ---------- */
.masthead { display: flex; align-items: center; gap: 0.7rem; margin-bottom: 2.4rem; }
.masthead img { width: 38px; height: 38px; border-radius: 9px; }
.masthead span { font-weight: 700; letter-spacing: -0.02em; font-size: 1.12rem; }

.hero { margin-bottom: 3.5rem; }
.hero h1 {
  font-size: clamp(2.5rem, 7vw, 3.9rem);
  letter-spacing: -0.04em;
  font-weight: 700;
  margin: 0 0 1rem;
  max-width: 20ch;
}
.hero .sub { font-size: 1.2rem; color: var(--muted); max-width: 44ch; margin: 0; }

.intro { margin: 0 0 3rem; }
.intro p { max-width: 42rem; color: var(--muted); }
.intro strong { color: var(--ink); font-weight: 600; }

h2 {
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
  margin: 0 0 1.25rem;
}

.cards { display: grid; gap: 1rem; }

.card {
  display: flex;
  gap: 1.4rem;
  align-items: flex-start;
  padding: 1.6rem;
  background: var(--raised);
  border: 1px solid var(--rule);
  border-radius: 16px;
  text-decoration: none;
  color: inherit;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}
.card:hover { transform: translateY(-2px); border-color: var(--p); box-shadow: var(--shadow); }
@media (prefers-reduced-motion: reduce) { .card { transition: none; } .card:hover { transform: none; } }

.card .tile { width: 88px; height: 88px; }
.card h3 { font-size: 1.3rem; letter-spacing: -0.02em; margin: 0 0 0.3rem; color: var(--ink); }
.card:hover h3 { color: var(--p); }
.card .tags { font-size: 0.76rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--p); margin: 0 0 0.5rem; font-weight: 600; }
.card .desc { color: var(--muted); margin: 0 0 0.7rem; font-size: 1rem; }
.card .go { color: var(--p); font-size: 0.92rem; font-weight: 500; }

/* ---------- product pages ---------- */
.phero {
  display: flex; gap: 1.6rem; align-items: center;
  margin: 0 0 2.5rem;
}
.phero .tile { width: 108px; height: 108px; }
.phero h1 { font-size: clamp(2.2rem, 6vw, 3.1rem); letter-spacing: -0.035em; margin: 0 0 0.3rem; }
.phero .lede { font-size: 1.15rem; color: var(--muted); margin: 0; max-width: 32ch; }

.pills { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0 0 2.5rem; }
.pill {
  font-size: 0.78rem; letter-spacing: 0.03em;
  padding: 0.28rem 0.7rem; border-radius: 999px;
  border: 1px solid var(--rule); color: var(--muted);
}

.problem {
  border-left: 3px solid var(--p);
  padding: 0.1rem 0 0.1rem 1.2rem;
  margin: 0 0 2rem;
  color: var(--muted);
}
.problem p:last-child { margin-bottom: 0; }

h4 { font-size: 1.05rem; letter-spacing: -0.01em; margin: 2.2rem 0 0.6rem; }

ul { padding-left: 1.15rem; margin: 0 0 1.2rem; }
li { margin-bottom: 0.5rem; }
li::marker { color: var(--p); }

.cta {
  display: inline-block; margin: 1.2rem 0 0;
  padding: 0.75rem 1.3rem;
  background: var(--p); color: var(--raised);
  border-radius: 10px; text-decoration: none; font-weight: 600;
}
.cta:hover { filter: brightness(1.08); }

.back { font-size: 0.92rem; display: inline-block; margin-bottom: 2rem; color: var(--muted); }
.meta { color: var(--muted); font-size: 0.92rem; }

footer {
  margin-top: 3.5rem; padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  color: var(--muted); font-size: 0.92rem;
}
footer a { color: var(--muted); }

@media (max-width: 560px) {
  main { padding-top: 2.5rem; }
  .card { flex-direction: column; gap: 1rem; }
  .card .tile { width: 62px; height: 62px; }
  .phero { flex-direction: column; align-items: flex-start; gap: 1.1rem; }
  .phero .tile { width: 84px; height: 84px; }
}