:root {
  --bg: #0e0f10;
  --bg-2: #141618;
  --panel: #17191b;
  --line: #26292c;
  --text: #f2f3f4;
  --muted: #9aa0a6;
  --dim: #6b7177;
  --accent: #00e5ff;
  --accent-dim: rgba(0, 229, 255, 0.12);
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --max: 1160px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; }

#bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

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

/* Nav */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  transition: background .3s, border-color .3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(14, 15, 16, 0.85);
  backdrop-filter: blur(12px);
  border-color: var(--line);
}
.nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  max-width: 1280px;
}
.brand { display: flex; flex-direction: column; align-items: center; gap: 2px; font-size: 13px; letter-spacing: .02em; }
.brand img { width: 40px; height: 34px; filter: invert(1); }
.nav ul { display: flex; gap: 32px; list-style: none; align-items: center; }
.nav ul a { color: var(--muted); font-size: 15px; transition: color .2s; }
.nav ul a:hover { color: var(--text); }
.nav-toggle { display: none; background: none; border: 0; color: var(--text); cursor: pointer; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid var(--line);
  background: var(--bg-2);
  color: var(--text);
  cursor: pointer;
  transition: all .2s;
  font-family: inherit;
}
.btn:hover { border-color: var(--dim); }
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #001418;
  box-shadow: 0 0 24px rgba(0, 229, 255, .35);
}
.btn-primary:hover { box-shadow: 0 0 36px rgba(0, 229, 255, .55); border-color: var(--accent); }
.btn-outline { background: transparent; border-color: var(--accent); color: var(--accent); padding: 8px 16px; font-weight: 500; }
.btn-outline:hover { background: var(--accent-dim); border-color: var(--accent); }
.nav ul a.btn-outline { color: var(--accent); }

/* Type */
.eyebrow { font-family: var(--mono); color: var(--accent); font-size: 13px; letter-spacing: .08em; margin-bottom: 20px; display: block; }
h1, h2, h3 { letter-spacing: -0.03em; line-height: 1.05; font-weight: 700; }
h1 { font-size: clamp(56px, 9vw, 124px); }
h2 { font-size: clamp(36px, 5vw, 60px); margin-bottom: 20px; }
h3 { font-size: 22px; letter-spacing: -0.01em; margin-bottom: 10px; }
.accent { color: var(--accent); }
.lead { color: var(--muted); font-size: 19px; max-width: 560px; }

/* Hero */
.hero { min-height: 100vh; display: flex; align-items: center; padding: 120px 0 80px; }
.hero h1 { margin-bottom: 36px; }
.hero .lead { margin-bottom: 48px; }
.actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* Sections */
section { padding: 120px 0; position: relative; }
.section-head { margin-bottom: 64px; max-width: 720px; }
.section-head p { color: var(--muted); font-size: 18px; }

.grid { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card { background: var(--bg); padding: 40px 32px; transition: background .25s; position: relative; }
.card:hover { background: var(--panel); }
.card p { color: var(--muted); font-size: 15px; }
.card .idx { font-family: var(--mono); color: var(--dim); font-size: 12px; margin-bottom: 32px; display: block; }
.card .icon { width: 36px; height: 36px; color: var(--accent); margin-bottom: 24px; }
.card ul { list-style: none; margin-top: 20px; }
.card li { font-family: var(--mono); font-size: 12.5px; color: var(--dim); padding: 4px 0; }
.card li::before { content: "› "; color: var(--accent); }

/* Products */
.product-feature {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: center;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, var(--bg-2), var(--bg));
  padding: 56px;
  margin-bottom: 24px;
}
.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid var(--line);
  color: var(--muted);
  margin-bottom: 20px;
}
.tag.live { border-color: var(--accent); color: var(--accent); }
.product-feature h3 { font-size: 44px; letter-spacing: -0.03em; }
.product-feature p { color: var(--muted); margin-bottom: 28px; font-size: 17px; }

.phone {
  width: 280px;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 36px;
  padding: 14px;
  background: #0a0b0c;
  box-shadow: 0 0 80px rgba(0, 229, 255, .08);
}
.phone .screen { border-radius: 26px; background: var(--panel); padding: 24px 18px; min-height: 460px; display: flex; flex-direction: column; gap: 14px; }
.phone .langs { display: flex; justify-content: space-between; font-family: var(--mono); font-size: 12px; color: var(--muted); }
.phone .langs b { color: var(--accent); font-weight: 500; }
.bubble { padding: 12px 14px; border-radius: 14px; font-size: 14px; max-width: 88%; }
.bubble.in { background: var(--line); align-self: flex-start; }
.bubble.out { background: var(--accent-dim); border: 1px solid rgba(0,229,255,.3); align-self: flex-end; }
.bubble small { display: block; font-family: var(--mono); font-size: 10px; color: var(--dim); margin-top: 4px; }
.phone .mic { margin-top: auto; align-self: center; width: 56px; height: 56px; border-radius: 50%; background: var(--accent); display: grid; place-items: center; color: #001418; box-shadow: 0 0 0 0 rgba(0,229,255,.5); animation: pulse 2.2s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 18px rgba(0,229,255,0); } 100% { box-shadow: 0 0 0 0 rgba(0,229,255,0); } }

/* Stack strip */
.stack { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 40px; }
.stack span { font-family: var(--mono); font-size: 12.5px; color: var(--muted); border: 1px solid var(--line); padding: 6px 12px; }

/* Process */
.steps { counter-reset: s; }
.steps .card::before {
  counter-increment: s;
  content: "0" counter(s);
  font-family: var(--mono);
  color: var(--accent);
  font-size: 13px;
  display: block;
  margin-bottom: 24px;
}

/* Stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; margin-top: 64px; }
.stat b { display: block; font-size: 48px; letter-spacing: -0.03em; line-height: 1; }
.stat span { color: var(--dim); font-family: var(--mono); font-size: 12px; }

/* Contact */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; }
form { display: grid; gap: 16px; }
label { font-family: var(--mono); font-size: 12px; color: var(--muted); display: grid; gap: 8px; }
input, textarea, select {
  background: var(--bg-2);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 14px 16px;
  font: inherit;
  font-family: var(--sans);
  font-size: 15px;
  outline: none;
  transition: border-color .2s;
}
input:focus, textarea:focus, select:focus { border-color: var(--accent); }
textarea { min-height: 140px; resize: vertical; }

/* Footer */
footer { border-top: 1px solid var(--line); padding: 48px 0; color: var(--dim); font-size: 14px; }
footer .wrap { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
footer nav { display: flex; gap: 24px; }
footer a:hover { color: var(--text); }

/* Reveal */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .8s ease; }
.reveal.in { opacity: 1; transform: none; }

/* Responsive */
@media (max-width: 960px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .product-feature, .contact { grid-template-columns: 1fr; padding: 32px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .nav ul {
    display: none;
    position: absolute;
    top: 76px; left: 0; right: 0;
    flex-direction: column;
    gap: 20px;
    padding: 24px;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
  }
  .nav ul.open { display: flex; }
  .nav-toggle { display: block; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  section { padding: 80px 0; }
  .product-feature h3 { font-size: 34px; }
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .phone .mic { animation: none; }
}

/* App badge + facts */
.app-id { display: flex; align-items: center; gap: 10px; }
.app-id img { width: 28px; height: 28px; border-radius: 7px; }
.facts { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 36px; }
.facts span { font-family: var(--mono); font-size: 12px; color: var(--accent); border: 1px solid rgba(0,229,255,.35); padding: 5px 10px; }
.product-feature .app-icon { width: 56px; height: 56px; border-radius: 14px; margin-bottom: 20px; }
.card .more { display: inline-block; margin-top: 20px; font-size: 14px; color: var(--accent); }
.card .more:hover { text-decoration: underline; }

/* Blog list */
.posts { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.post-link { display: grid; grid-template-columns: 140px 1fr auto; gap: 32px; align-items: baseline; background: var(--bg); padding: 28px 32px; transition: background .25s; }
.post-link:hover { background: var(--panel); }
.post-link time { font-family: var(--mono); font-size: 12px; color: var(--dim); }
.post-link h3 { margin: 0 0 6px; }
.post-link p { color: var(--muted); font-size: 15px; }
.post-link .arrow { color: var(--accent); }

/* Article */
.article { padding: 160px 0 100px; }
.article .wrap { max-width: 760px; }
.article h1 { font-size: clamp(38px, 5vw, 60px); margin-bottom: 20px; }
.article .meta { font-family: var(--mono); font-size: 12px; color: var(--dim); margin-bottom: 56px; display: block; }
.prose { font-size: 18px; color: #c9cdd1; }
.prose p, .prose ul, .prose table, .prose pre { margin-bottom: 24px; }
.prose h2 { font-size: 30px; margin: 56px 0 18px; color: var(--text); }
.prose ul { padding-left: 22px; }
.prose li { margin-bottom: 8px; }
.prose a { color: var(--accent); }
.prose a:hover { text-decoration: underline; }
.prose strong { color: var(--text); }
.prose code { font-family: var(--mono); font-size: .85em; background: var(--bg-2); border: 1px solid var(--line); padding: 1px 6px; }
.prose table { width: 100%; border-collapse: collapse; font-size: 15px; }
.prose th, .prose td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.prose th { font-family: var(--mono); font-size: 12px; color: var(--muted); font-weight: 500; }
.back { display: inline-block; margin-top: 56px; color: var(--accent); }

@media (max-width: 720px) {
  .post-link { grid-template-columns: 1fr; gap: 8px; padding: 24px; }
  .post-link .arrow { display: none; }
}

/* Project groups */
.subhead { font-family: var(--mono); font-size: 13px; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin: 56px 0 16px; }