/* ---------- design tokens ---------- */

:root {
  --bg:          #0a0e0d;
  --bg-elev:     #11171a;
  --bg-elev-2:   #161d20;
  --bg-alt:      #0d1416;
  --line:        #1f2a2e;
  --line-strong: #2a3a3f;

  --text:        #d8e3e2;
  --text-soft:   #9aabaa;
  --text-mute:   #6a7a79;

  --accent:      #00d4aa;
  --accent-soft: #1f7a66;
  --accent-glow: rgba(0, 212, 170, 0.18);
  --warn:        #ffb454;
  --pink:        #ff7eb6;

  --radius:      10px;
  --radius-sm:   6px;

  --mono: "JetBrains Mono", "Fira Code", "SF Mono", "Menlo", "Consolas", ui-monospace, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;

  --container: 1080px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg:          #f7f5f0;
    --bg-elev:     #ffffff;
    --bg-elev-2:   #fbfaf6;
    --bg-alt:      #efece5;
    --line:        #e0dccf;
    --line-strong: #cdc7b4;

    --text:        #15201f;
    --text-soft:   #4a5957;
    --text-mute:   #7a8786;

    --accent:      #008060;
    --accent-soft: #c4ead9;
    --accent-glow: rgba(0, 128, 96, 0.12);
  }
}

/* ---------- reset ---------- */

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease, color 0.15s ease;
}
a:hover { border-bottom-color: var(--accent); }

code, pre, .mono { font-family: var(--mono); }

code {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.875em;
  color: var(--text);
}

pre {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--text);
}
pre code {
  background: none;
  border: 0;
  padding: 0;
  font-size: inherit;
  color: inherit;
}

h1, h2, h3 {
  font-family: var(--mono);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(2rem, 4vw + 1rem, 3.4rem); }
h2 { font-size: clamp(1.5rem, 1.5vw + 1rem, 2.1rem); }
h3 { font-size: 1.1rem; }

p { margin: 0 0 1em; }

/* ---------- topbar ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: color-mix(in oklab, var(--bg) 85%, transparent);
  border-bottom: 1px solid var(--line);
}

.topbar__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 0;
  color: var(--text);
}
.brand:hover { color: var(--accent); }

.brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--accent);
  color: #000;
  border-radius: 6px;
  font-family: var(--mono);
  font-weight: 700;
}
.brand__name {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 1.05rem;
}

.topnav {
  display: flex;
  align-items: center;
  gap: 22px;
  font-family: var(--mono);
  font-size: 0.92rem;
}
.topnav a { color: var(--text-soft); }
.topnav a:hover { color: var(--accent); }

@media (max-width: 720px) {
  .topnav { display: none; }
}

/* ---------- layout ---------- */

main { display: block; }

.section {
  max-width: var(--container);
  margin: 0 auto;
  padding: 80px 24px;
}

.section--alt {
  max-width: none;
  background: var(--bg-alt);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.section--alt > * { max-width: var(--container); margin-left: auto; margin-right: auto; padding-left: 24px; padding-right: 24px; }

.section__head { margin-bottom: 36px; }
.section__head h2 { margin-bottom: 8px; }
.section__sub {
  color: var(--text-soft);
  font-size: 1.05rem;
  max-width: 70ch;
  margin: 0;
}

.subheading {
  margin-top: 32px;
  font-size: 1rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ---------- hero ---------- */

.hero {
  max-width: var(--container);
  margin: 0 auto;
  padding: 80px 24px 64px;
  position: relative;
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -40px -40px auto -40px;
  height: 480px;
  background:
    radial-gradient(ellipse 600px 240px at 30% 20%, var(--accent-glow), transparent 70%),
    radial-gradient(ellipse 400px 180px at 80% 60%, color-mix(in oklab, var(--pink), transparent 85%), transparent 70%);
  pointer-events: none;
  z-index: -1;
  filter: blur(20px);
}

.hero__art {
  font-size: 11px;
  line-height: 1.15;
  color: var(--accent);
  margin: 0 0 28px;
  opacity: 0.85;
  white-space: pre;
  overflow-x: auto;
}

.hero__title {
  margin: 0 0 20px;
}
.hero__title span {
  background: linear-gradient(135deg, var(--accent), var(--pink));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__lede {
  font-size: 1.15rem;
  color: var(--text-soft);
  max-width: 60ch;
  margin: 0 0 32px;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  color: var(--text-mute);
  font-family: var(--mono);
  font-size: 0.85rem;
}

.pill {
  padding: 4px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--bg-elev);
  color: var(--text-soft);
}
.pill--muted { color: var(--text-mute); }

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 14px 22px;
  border-radius: var(--radius);
  font-family: var(--mono);
  font-weight: 500;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.1s ease, background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  cursor: pointer;
}
.btn:active { transform: translateY(1px); }
.btn:hover { border-bottom-color: transparent; }

.btn--primary {
  background: var(--accent);
  color: #001813;
  box-shadow: 0 8px 24px -8px var(--accent-glow);
}
.btn--primary:hover { background: color-mix(in oklab, var(--accent) 88%, white); }

.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line-strong);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }

.btn--solid {
  background: var(--bg-elev-2);
  color: var(--text);
  border-color: var(--line-strong);
}
.btn--solid:hover { border-color: var(--accent); color: var(--accent); }

.btn--inline {
  flex-direction: row;
  align-items: center;
  padding: 6px 10px;
  font-size: 0.78rem;
  color: var(--text-mute);
  background: transparent;
  border: 1px dashed var(--line-strong);
}
.btn--inline:hover { color: var(--accent); border-style: solid; border-color: var(--accent); }

.btn__label { font-weight: 600; font-size: 1rem; }
.btn__sub { font-size: 0.78rem; color: color-mix(in oklab, currentColor 70%, transparent); font-weight: 400; }

/* ---------- downloads ---------- */

.downloads {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.download-card {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.download-card:hover { border-color: var(--line-strong); transform: translateY(-1px); }

.download-card[data-os].is-detected {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent-glow), 0 12px 32px -16px var(--accent-glow);
}
.download-card[data-os].is-detected::before {
  content: "your platform";
  display: inline-block;
  align-self: flex-start;
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: var(--accent-glow);
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 4px;
}

.download-card h3 {
  margin: 0;
  font-size: 1rem;
}
.download-card__sub {
  color: var(--text-soft);
  font-size: 0.85rem;
  margin: 0;
  font-family: var(--mono);
}
.download-card__hint {
  color: var(--text-mute);
  font-size: 0.85rem;
  margin: 0;
}

.download-card--unsupported {
  opacity: 0.7;
  border-style: dashed;
}
.download-card--unsupported h3 { color: var(--text-mute); }

.verify {
  border: 1px solid var(--line);
  background: var(--bg-elev);
  border-radius: var(--radius);
  padding: 14px 18px;
  font-family: var(--mono);
  font-size: 0.92rem;
}
.verify summary {
  cursor: pointer;
  color: var(--text-soft);
  user-select: none;
}
.verify summary:hover { color: var(--accent); }
.verify pre { margin-top: 12px; margin-bottom: 0; }

/* ---------- cards grid ---------- */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}

.card {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 22px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.card:hover { border-color: var(--line-strong); transform: translateY(-1px); }
.card h3 {
  color: var(--accent);
  margin-bottom: 10px;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.card p { color: var(--text-soft); margin: 0 0 12px; }
.card p:last-child { margin-bottom: 0; }
.card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--text-soft);
}
.card li + li { margin-top: 6px; }

/* ---------- how / steps ---------- */

.how {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.how__diagram {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--text-soft);
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  overflow-x: auto;
  white-space: pre;
}
.how__steps {
  margin: 0;
  padding-left: 24px;
  color: var(--text-soft);
}
.how__steps li { margin-bottom: 14px; }
.how__steps strong { color: var(--text); }

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
}
.steps > li {
  border-left: 2px solid var(--line);
  padding: 0 0 28px 24px;
  position: relative;
}
.steps > li::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--bg);
}
.steps > li:last-child { border-color: transparent; padding-bottom: 0; }
.steps h3 { margin-top: 0; color: var(--text); font-size: 1rem; }
.steps p { color: var(--text-soft); }

/* ---------- releases ---------- */

.release-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.release-list__loading,
.release-list__error {
  color: var(--text-mute);
  font-family: var(--mono);
}
.release-list__error { color: var(--warn); }

.release {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
}

.release__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}
.release__tag {
  font-family: var(--mono);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--accent);
  margin: 0;
}
.release__date {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--text-mute);
}
.release__latest-pill {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: var(--accent-glow);
  padding: 2px 8px;
  border-radius: 4px;
  margin-left: 8px;
  vertical-align: middle;
}

.release__body {
  color: var(--text-soft);
  font-size: 0.95rem;
}
.release__body h1,
.release__body h2,
.release__body h3 {
  font-family: var(--sans);
  font-size: 0.95rem;
  margin: 12px 0 6px;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.release__body ul { padding-left: 20px; margin: 6px 0 12px; }
.release__body li { margin-bottom: 3px; }
.release__body a { word-break: break-word; }
.release__body code { font-size: 0.82em; }

.release__assets {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.85rem;
}
.release__asset {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 12px;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}
.release__asset-name { color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.release__asset-actions { display: flex; gap: 6px; flex-shrink: 0; }
.release__asset-actions a {
  font-size: 0.78rem;
  color: var(--text-mute);
  border-bottom: 0;
}
.release__asset-actions a:hover { color: var(--accent); }

.release-list__footer {
  margin-top: 20px;
  color: var(--text-mute);
  font-size: 0.92rem;
}

/* ---------- footer ---------- */

.footer {
  border-top: 1px solid var(--line);
  background: var(--bg-alt);
  padding: 32px 24px;
  margin-top: 40px;
}
.footer__inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-family: var(--mono);
  font-size: 0.88rem;
  color: var(--text-mute);
}
.footer__inner p { margin: 0; }
.footer__links { display: flex; flex-wrap: wrap; gap: 18px; }

/* ---------- responsive ---------- */

@media (max-width: 600px) {
  .section { padding: 56px 20px; }
  .hero { padding: 56px 20px 40px; }
  .hero__art { font-size: 9px; }
  .topbar__inner { padding: 12px 18px; }
  .footer__inner { flex-direction: column; align-items: flex-start; }
}