:root {
  --ink: #0c1f1a;
  --muted: #3a554c;
  --line: rgba(12, 31, 26, 0.12);
  --accent: #0f6b52;
  --accent-2: #c4a35a;
  --paper: #e7efe9;
  --card: rgba(255, 255, 255, 0.55);
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --sans: "DM Sans", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.5;
}

.wash {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(115deg, rgba(15, 107, 82, 0.18), transparent 42%),
    linear-gradient(200deg, rgba(196, 163, 90, 0.16), transparent 38%),
    radial-gradient(900px 480px at 80% -10%, #b7d4c8, transparent 60%),
    linear-gradient(180deg, #edf4ef 0%, #d6e4db 55%, #c8d7ce 100%);
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 980px;
  margin: 0 auto;
  padding: 1.25rem 1.5rem 0;
}
.mark {
  font-weight: 800;
  letter-spacing: -0.03em;
  font-size: 1.05rem;
}
.top nav { display: flex; gap: 1.1rem; }
.top a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.92rem;
}
.top a:hover { color: var(--ink); }

.hero {
  max-width: 980px;
  margin: 0 auto;
  padding: clamp(3rem, 8vh, 5.5rem) 1.5rem 3rem;
}
.product {
  margin: 0 0 0.65rem;
  font-size: clamp(2.4rem, 7vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 0.95;
}
.hero h1 {
  margin: 0 0 1rem;
  max-width: 18ch;
  font-size: clamp(1.35rem, 3.2vw, 1.85rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--accent);
}
.sub {
  margin: 0 0 1.5rem;
  max-width: 40rem;
  color: var(--muted);
  font-size: 1.05rem;
}
.cta { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 1rem; }
.btn {
  appearance: none;
  border: 0;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  padding: 0.75rem 1.15rem;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
}
.btn.primary { background: var(--ink); color: #f2f7f4; }
.btn.primary:hover { background: #16352c; }
.btn.ghost {
  background: transparent;
  color: var(--ink);
  box-shadow: inset 0 0 0 1.5px var(--line);
}
.meta {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--muted);
}
.meta.ok { color: var(--accent); }
.meta.bad { color: #9b2c2c; }

.block {
  max-width: 980px;
  margin: 0 auto;
  padding: 2.25rem 1.5rem;
  border-top: 1px solid var(--line);
}
.block h2 {
  margin: 0 0 0.5rem;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}
.ver {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-2);
  margin-left: 0.35rem;
}
.one { margin: 0 0 1.25rem; color: var(--muted); max-width: 42rem; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.85rem;
}
.card {
  background: var(--card);
  backdrop-filter: blur(8px);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem 1.05rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  min-height: 8.5rem;
}
.card .os { font-weight: 800; letter-spacing: -0.02em; }
.card .note { color: var(--muted); font-size: 0.88rem; flex: 1; }
.card a {
  align-self: start;
  color: #f2f7f4;
  background: var(--accent);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.45rem 0.75rem;
  border-radius: 8px;
}
.card a:hover { filter: brightness(1.08); }
.card .size { font-family: var(--mono); font-size: 0.75rem; color: var(--muted); }

.extra { margin: 1rem 0 0; font-size: 0.9rem; color: var(--muted); }
.extra a { color: var(--accent); }

.steps {
  margin: 0 0 1.25rem;
  padding-left: 1.2rem;
  color: var(--muted);
  max-width: 40rem;
}
.steps li { margin-bottom: 0.45rem; }
.steps strong { color: var(--ink); }

.panel {
  background: rgba(12, 31, 26, 0.92);
  color: #e7f2ec;
  border-radius: 14px;
  padding: 0.35rem 0.25rem;
  overflow: hidden;
}
.row {
  display: grid;
  grid-template-columns: 7.5rem 1fr auto;
  gap: 0.65rem;
  align-items: center;
  padding: 0.7rem 0.9rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.row:first-child { border-top: 0; }
.row span {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: rgba(231, 242, 236, 0.55);
}
.row code {
  font-family: var(--mono);
  font-size: 0.86rem;
  overflow-wrap: anywhere;
}
.row .key { font-size: 0.78rem; }
.copy {
  appearance: none;
  border: 0;
  background: rgba(255,255,255,0.1);
  color: #fff;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.35rem 0.6rem;
  border-radius: 7px;
  cursor: pointer;
}
.copy:hover { background: rgba(255,255,255,0.18); }

.links { margin: 0; padding-left: 1.1rem; color: var(--muted); }
.links a { color: var(--accent); }

footer {
  max-width: 980px;
  margin: 0 auto 2rem;
  padding: 1.25rem 1.5rem 0;
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--line);
}

@media (max-width: 640px) {
  .top nav { display: none; }
  .row { grid-template-columns: 1fr; gap: 0.25rem; }
  .copy { justify-self: start; }
}