:root {
  --bg: #070b14;
  --bg-alt: #0b1120;
  --surface: #0f172a;
  --surface-2: #131c33;
  --line: rgba(148, 163, 184, 0.14);
  --text: #e6ebf5;
  --muted: #94a3b8;
  --teal: #5eead4;
  --indigo: #818cf8;
  --grad: linear-gradient(135deg, var(--teal), var(--indigo));
  --radius: 16px;
  --wrap: 1160px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", "Cascadia Code", Menlo, Consolas, monospace;
  color-scheme: dark;
}

*, *::before, *::after { 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;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3 { line-height: 1.15; margin: 0 0 0.5em; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 750; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 650; }
p { margin: 0 0 1em; }
.wrap { width: min(var(--wrap), 100% - 32px); margin-inline: auto; }
.muted { color: var(--muted); }
.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 0.9rem;
}
.lead { font-size: 1.15rem; color: #c3cde0; max-width: 34em; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.8rem 1.4rem;
  border-radius: 999px;
  background: var(--grad);
  color: #06111d;
  font-weight: 650;
  border: 0;
  transition: transform .15s ease, box-shadow .15s ease;
  box-shadow: 0 8px 30px -10px rgba(94, 234, 212, .55);
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 12px 34px -10px rgba(129, 140, 248, .7); }
.btn--ghost { background: transparent; color: var(--text); border: 1px solid var(--line); box-shadow: none; }
.btn--ghost:hover { border-color: rgba(148, 163, 184, .4); box-shadow: none; }
.btn--sm { padding: 0.5rem 1rem; font-size: .9rem; }
.btn--lg { padding: 1rem 1.8rem; font-size: 1.05rem; }

/* nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7, 11, 20, .72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: .6rem; font-weight: 700; font-size: 1.15rem; letter-spacing: -0.01em; }
.brand__mark { width: 32px; height: 32px; }
.nav__menu { display: flex; align-items: center; gap: 1.6rem; font-size: .95rem; }
.nav__menu a:not(.btn) { color: var(--muted); transition: color .15s; }
.nav__menu a:not(.btn):hover { color: var(--text); }
.nav__toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav__toggle span { display: block; width: 22px; height: 2px; background: var(--text); margin: 5px 0; transition: transform .2s; }

/* hero */
.hero { position: relative; padding: 88px 0 72px; overflow: hidden; }
.hero__glow {
  position: absolute; inset: -30% -10% auto auto; width: 70vw; height: 70vw; max-width: 900px; max-height: 900px;
  background: radial-gradient(closest-side, rgba(129, 140, 248, .22), transparent 70%),
              radial-gradient(closest-side, rgba(94, 234, 212, .14), transparent 70%) -200px 200px no-repeat;
  pointer-events: none;
}
.hero__grid { position: relative; display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.hero__grid > *, .api > *, .grid > * { min-width: 0; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 1.8rem 0 2.4rem; }
.hero__facts { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 28px; }
.hero__facts li { display: flex; flex-direction: column; }
.hero__facts strong { font-size: 1.1rem; }
.hero__facts span { color: var(--muted); font-size: .88rem; }
.hero__visual { position: relative; min-height: 420px; }
.vortex { width: 100%; max-width: 440px; display: block; margin-left: auto; opacity: .95; }
.vortex .nodes circle { fill: var(--teal); opacity: .8; }
.ring { transform-origin: 200px 200px; }
.r1 { animation: spin 60s linear infinite; }
.r2 { animation: spin 32s linear infinite reverse; }
.r3 { animation: spin 20s linear infinite; }
.r4 { animation: spin 12s linear infinite reverse; }
.nodes { transform-origin: 200px 200px; animation: spin 90s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .ring, .nodes { animation: none; } html { scroll-behavior: auto; } }

.hero__visual .card--code { position: absolute; left: 0; bottom: 0; width: min(420px, 92%); }

/* cards */
.card {
  background: rgba(15, 23, 42, .85);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 30px 60px -30px rgba(0, 0, 0, .7);
  backdrop-filter: blur(8px);
}
.card__bar { display: flex; align-items: center; gap: 6px; padding: 10px 14px; border-bottom: 1px solid var(--line); font: 12px var(--mono); color: var(--muted); }
.card__bar i { width: 10px; height: 10px; border-radius: 50%; background: #334155; }
.card__bar i:nth-child(1) { background: #f87171; }
.card__bar i:nth-child(2) { background: #fbbf24; }
.card__bar i:nth-child(3) { background: #34d399; }
.card__bar span { margin-left: 8px; }
.card pre { margin: 0; padding: 16px 18px; overflow-x: auto; font: 13px/1.7 var(--mono); color: #cbd5e1; }
.c { color: #64748b; } .k { color: #c084fc; } .f { color: var(--teal); } .s { color: #fcd34d; } .p { color: var(--indigo); }

/* strip */
.strip { border-block: 1px solid var(--line); background: var(--bg-alt); }
.strip__inner { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 28px; padding: 22px 0; color: var(--muted); font-size: .92rem; }
.strip__inner span { white-space: nowrap; }
.strip__inner span::before { content: "◆"; margin-right: 10px; font-size: .6rem; vertical-align: 2px; color: var(--indigo); }

/* sections */
.section { padding: 96px 0; }
.section--alt { background: var(--bg-alt); border-block: 1px solid var(--line); }
.section__head { max-width: 680px; margin-bottom: 48px; }
.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.svc, .uc, .feat {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color .2s, transform .2s;
}
.svc:hover, .uc:hover { border-color: rgba(129, 140, 248, .45); transform: translateY(-2px); }
.svc--accent { background: linear-gradient(180deg, rgba(129, 140, 248, .08), transparent 60%), var(--surface); }
.svc__icon {
  width: 44px; height: 44px; border-radius: 12px;
  display: grid; place-items: center;
  background: rgba(94, 234, 212, .1);
  color: var(--teal);
  margin-bottom: 18px;
}
.svc__icon svg { width: 24px; height: 24px; }
.tag { display: inline-block; font-size: .72rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--teal); margin-bottom: .4rem; }
.tag--hot { color: var(--indigo); }
.ticks { list-style: none; padding: 0; margin: 1rem 0 0; display: grid; gap: .55rem; }
.ticks li { position: relative; padding-left: 1.6rem; color: #cbd5e1; font-size: .95rem; }
.ticks li::before {
  content: ""; position: absolute; left: 0; top: .5em; width: .9rem; height: .5rem;
  border-left: 2px solid var(--teal); border-bottom: 2px solid var(--teal);
  transform: rotate(-45deg) translateY(-2px);
}
.uc h3, .feat h3 { margin-bottom: .4rem; }
.uc p, .feat p { margin: 0; font-size: .95rem; }

/* steps */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: s; }
.steps li { position: relative; padding-top: 28px; border-top: 1px solid var(--line); }
.steps li::before { content: ""; position: absolute; top: -1px; left: 0; width: 48px; height: 2px; background: var(--grad); }
.steps__n { display: block; font: 600 .85rem var(--mono); color: var(--indigo); margin-bottom: .6rem; }
.steps p { font-size: .95rem; margin: 0; }

/* api */
.api { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.status { display: inline-flex; align-items: center; gap: 10px; margin-top: 1.6rem; padding: 8px 14px; border: 1px solid var(--line); border-radius: 999px; font-size: .9rem; color: var(--muted); }
.status i { width: 8px; height: 8px; border-radius: 50%; background: #64748b; }
.status[data-state="ok"] i { background: #34d399; box-shadow: 0 0 0 4px rgba(52, 211, 153, .18); }
.status[data-state="down"] i { background: #f87171; }

/* cta */
.cta { padding-top: 40px; }
.cta__box {
  display: flex; align-items: center; justify-content: space-between; gap: 32px;
  padding: 48px;
  border-radius: 24px;
  border: 1px solid rgba(129, 140, 248, .3);
  background: radial-gradient(120% 140% at 0% 0%, rgba(94, 234, 212, .12), transparent 50%),
              radial-gradient(120% 140% at 100% 100%, rgba(129, 140, 248, .16), transparent 50%),
              var(--surface);
}
.cta__box h2 { font-size: clamp(1.5rem, 2.8vw, 2rem); }
.cta__box p { margin: 0; }

/* footer */
.footer { border-top: 1px solid var(--line); padding: 32px 0; margin-top: 64px; }
.footer__inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer__inner p { margin: 0; font-size: .9rem; }
.brand--footer { font-size: 1rem; }
.brand--footer .brand__mark { width: 26px; height: 26px; }
.footer__links { display: flex; gap: 20px; font-size: .9rem; color: var(--muted); }
.footer__links a:hover { color: var(--text); }

/* responsive */
@media (max-width: 1000px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); row-gap: 36px; }
}
@media (max-width: 860px) {
  .hero { padding-top: 56px; }
  .hero__grid, .api { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .hero__visual { min-height: 0; }
  .vortex { margin: 0 auto; max-width: 340px; }
  .hero__visual .card--code { position: relative; width: 100%; margin-top: -40px; }
  .grid--2 { grid-template-columns: 1fr; }
  .cta__box { flex-direction: column; align-items: flex-start; padding: 32px; }
  .nav__toggle { display: block; }
  .nav__menu {
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: rgba(7, 11, 20, .97);
    border-bottom: 1px solid var(--line);
    padding: 8px 16px 16px;
    display: none;
  }
  .nav__menu.is-open { display: flex; }
  .nav__menu a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav__menu .btn { margin-top: 12px; border-bottom: 0; }
}
@media (max-width: 560px) {
  .section { padding: 64px 0; }
  .grid--3, .grid--4, .steps { grid-template-columns: 1fr; }
  .svc, .uc, .feat { padding: 22px; }
  .hero__facts { gap: 18px; }
}