:root {
  --accent: #4f2cf0;
  --accent-hover: #3f1fd8;
  --accent-soft: #ece8ff;
  --accent-ink: #3416c4;
  --coral: #ff7a59;
  --bg: #f6f5fb;
  --surface: #ffffff;
  --sunken: #efedf7;
  --text: #17142b;
  --text-2: #4a4664;
  --muted: #7a7694;
  --line: #e4e1f0;
  --shadow: 0 1px 2px rgba(23, 20, 43, .06), 0 12px 40px -12px rgba(52, 22, 196, .25);
  --font: 'Plus Jakarta Sans', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #8b74ff;
    --accent-hover: #9d8aff;
    --accent-soft: #261f4d;
    --accent-ink: #c4b8ff;
    --bg: #0f0d1a;
    --surface: #18152a;
    --sunken: #13111f;
    --text: #f1eff9;
    --text-2: #c2bdd8;
    --muted: #8f8aa8;
    --line: #2a2640;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 40px -12px rgba(0, 0, 0, .6);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 var(--font); -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }
code { font-family: var(--mono); font-size: .9em; background: var(--accent-soft); color: var(--accent-ink); padding: .1em .35em; border-radius: 5px; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -.02em; margin: 0 0 .6em; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.3rem); font-weight: 800; }
h3 { font-size: 1.08rem; font-weight: 700; }
.wrap { max-width: 1140px; margin: 0 auto; padding-inline: 20px; }
.narrow { max-width: 760px; }
.center { text-align: center; }
.muted { color: var(--muted); }
.small { font-size: .92rem; }

/* nav */
.nav { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 10; background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.nav-in { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.15rem; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand.small { font-size: 1rem; gap: 8px; }
.nav nav { display: flex; gap: 22px; margin-left: auto; }
.nav nav a { color: var(--text-2); font-weight: 600; font-size: .95rem; }
.nav nav a:hover { color: var(--text); text-decoration: none; }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 20px; border-radius: 12px; font-weight: 700; font-size: .98rem; border: 1px solid transparent; transition: background .15s, transform .15s, border-color .15s; }
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 6px 20px -8px var(--accent); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { border-color: var(--line); color: var(--text); background: var(--surface); }
.btn-ghost:hover { border-color: var(--accent); }
.btn-link { color: var(--accent); padding-inline: 6px; }
.btn-sm { padding: 8px 14px; font-size: .9rem; border-radius: 10px; }
.btn-xs { padding: 5px 10px; font-size: .8rem; border-radius: 8px; }

/* hero */
.hero { padding: 72px 0 56px; background:
  radial-gradient(800px 400px at 85% 10%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 70%),
  radial-gradient(500px 300px at 10% 90%, color-mix(in srgb, var(--coral) 12%, transparent), transparent 70%); }
.hero-in { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.eyebrow { display: inline-block; font-weight: 700; font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; color: var(--accent-ink); background: var(--accent-soft); padding: 6px 12px; border-radius: 999px; margin: 0 0 20px; }
h1 { font-size: clamp(2.4rem, 5.4vw, 4rem); font-weight: 800; letter-spacing: -.035em; }
.hl { background: linear-gradient(90deg, var(--accent), var(--coral)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lede { font-size: 1.15rem; color: var(--text-2); max-width: 36em; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 18px; }
.fine { font-size: .88rem; color: var(--muted); margin: 0; }

/* product mock */
.mock { perspective: 1400px; }
.mock-card { background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 18px; box-shadow: var(--shadow); transform: rotateY(-6deg) rotateX(3deg); }
.mock-head { display: flex; align-items: center; gap: 6px; margin-bottom: 14px; font-size: .9rem; }
.mock-head b { margin-left: 8px; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.chip { display: inline-grid; place-items: center; min-width: 36px; height: 36px; padding: 0 8px; border-radius: 12px; background: var(--c); color: #fff; font-weight: 800; font-size: .85rem; box-shadow: 0 0 0 3px var(--surface), 0 0 0 5px color-mix(in srgb, var(--c) 45%, transparent); }
.chip.off { background: var(--sunken); color: var(--muted); box-shadow: none; }
.mock-text { background: var(--sunken); border-radius: 12px; padding: 12px 14px; font-size: .92rem; }
.mock-text p { margin: 0 0 4px; }
.mock-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 16px; }
.pill { font-size: .78rem; font-weight: 600; color: #127a4a; background: color-mix(in srgb, #1fae6b 14%, transparent); padding: 4px 10px; border-radius: 999px; }
.heat-title { display: flex; justify-content: space-between; font-size: .85rem; margin-bottom: 8px; }
.heat { display: grid; grid-template-columns: 14px repeat(16, 1fr); gap: 3px; }
.heat .dl { font-size: .65rem; color: var(--muted); line-height: 14px; }
.heat i { display: block; height: 14px; border-radius: 3px; background: color-mix(in srgb, var(--accent) calc(var(--v) * 100%), var(--sunken)); }
.mock-foot { display: flex; align-items: center; gap: 10px; margin-top: 14px; font-size: .88rem; }
.mock-foot .btn { margin-left: auto; color: #fff; }

/* sections */
section { padding: 72px 0; }
.why { background: var(--surface); border-block: 1px solid var(--line); }
.why p { font-size: 1.12rem; color: var(--text-2); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 36px; }
.grid article { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 24px; }
.grid article h3::before { content: ''; display: block; width: 28px; height: 4px; border-radius: 4px; background: linear-gradient(90deg, var(--accent), var(--coral)); margin-bottom: 14px; }
.grid p { margin: 0; color: var(--text-2); font-size: .96rem; }

.networks { background: var(--sunken); }
.net-groups { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin: 36px 0 24px; }
.net-groups h3 { font-size: .8rem; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); }
.net-groups ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.net-groups li { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 6px 12px; font-weight: 600; font-size: .92rem; }

.two { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; align-items: center; }
.checks { list-style: none; padding: 0; margin: 20px 0 28px; }
.checks li { padding-left: 28px; position: relative; margin-bottom: 8px; color: var(--text-2); }
.checks li::before { content: '✓'; position: absolute; left: 0; color: var(--accent); font-weight: 800; }
.code { margin: 0; background: #14112a; color: #e8e5f7; border-radius: 16px; padding: 22px 24px; overflow-x: auto; font: 14px/1.7 var(--mono); box-shadow: var(--shadow); }
.code code { background: none; color: inherit; padding: 0; }
.code .c { color: #8f8aa8; }

.repos { background: var(--surface); border-top: 1px solid var(--line); }
.repo-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin: 32px 0 20px; }
.repo-grid a { display: flex; flex-direction: column; gap: 6px; border: 1px solid var(--line); border-radius: 14px; padding: 18px; color: var(--text); background: var(--bg); transition: border-color .15s, transform .15s; }
.repo-grid a:hover { border-color: var(--accent); text-decoration: none; transform: translateY(-2px); }
.repo-grid b { font-family: var(--mono); font-size: .92rem; color: var(--accent-ink); }
.repo-grid span { font-size: .9rem; color: var(--text-2); }

.foot { padding: 28px 0 calc(28px + env(safe-area-inset-bottom, 0px)); border-top: 1px solid var(--line); }
.foot-in { display: flex; flex-wrap: wrap; gap: 16px 24px; align-items: center; justify-content: space-between; font-size: .9rem; }

@media (max-width: 960px) {
  .hero-in, .two { grid-template-columns: 1fr; }
  .mock-card { transform: none; }
  .grid { grid-template-columns: 1fr 1fr; }
  .net-groups { grid-template-columns: 1fr 1fr; }
  .repo-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  .nav nav { display: none; }
  .nav .btn-sm { margin-left: auto; }
  .hero { padding-top: 44px; }
  .grid, .net-groups, .repo-grid { grid-template-columns: 1fr; }
  section { padding: 52px 0; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .repo-grid a { transition: none; }
}