:root {
  --bg: #0d1114;
  --panel: #141a1e;
  --surface: #1a2227;
  --line: rgba(255, 255, 255, 0.22);
  --hair: rgba(255, 255, 255, 0.1);
  --ink: #eef2f4;
  --muted: #9aa3a8;
  --faint: #6b757a;
  --g1: #2fd98a;
  --g2: #0fb39c;
  --accent-ink: #04231b;
  --radius: 16px;
  --radius-sm: 11px;
  --max: 1080px;
  --font: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  line-height: 1.5;
  min-height: 100vh;
}

a { color: var(--g1); text-decoration: none; }
a:hover { color: #5ee4a8; }

.wrap {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0 8px;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: inherit;
}
.brand img { width: 28px; height: 28px; }
.brand-name {
  font-weight: 800;
  letter-spacing: 2.5px;
  font-size: 17px;
}
.brand-name span { color: var(--g2); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 14px;
  color: var(--muted);
}
.nav-links a { color: var(--muted); }
.nav-links a:hover { color: var(--ink); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 18px;
  border-radius: 14px;
  border: 1px solid var(--line);
  font-weight: 650;
  font-size: 14px;
  color: var(--accent-ink);
  background: linear-gradient(90deg, var(--g1), var(--g2));
}
.btn:hover { color: var(--accent-ink); filter: brightness(1.06); }
.btn-ghost {
  background: var(--surface);
  color: var(--ink);
}
.btn-ghost:hover { color: var(--ink); }

.hero {
  position: relative;
  padding: 56px 0 36px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 40px;
  width: 520px;
  height: 520px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(15, 179, 156, 0.22), transparent 68%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}
.kicker {
  color: var(--g2);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  margin: 0 0 12px;
}
h1 {
  margin: 0 0 16px;
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.12;
  letter-spacing: -0.03em;
  font-weight: 800;
}
.lead {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 18px;
  max-width: 34em;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.phone {
  justify-self: center;
  width: min(280px, 100%);
  aspect-ratio: 9 / 16;
  border-radius: 32px;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
  padding: 22px 20px 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.phone-brand {
  align-self: flex-start;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  letter-spacing: 2px;
  font-size: 13px;
}
.phone-brand span { color: var(--g2); }
.phone-card {
  margin-top: 16px;
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--hair);
  border-radius: 14px;
  padding: 10px 12px;
  font-size: 12px;
  color: var(--muted);
}
.phone-card b { color: var(--ink); display: block; font-size: 13px; }
.ring {
  margin: 28px 0 14px;
  width: 148px;
  height: 148px;
  border-radius: 50%;
  background:
    conic-gradient(from -90deg, var(--g1) 0 295deg, rgba(255,255,255,0.12) 295deg 360deg);
  display: grid;
  place-items: center;
}
.ring::after {
  content: "";
  width: 122px;
  height: 122px;
  border-radius: 50%;
  background: var(--panel);
}
.phone-status {
  font-size: 13px;
  font-weight: 700;
  color: var(--g1);
}
.phone-hint {
  margin-top: auto;
  text-align: center;
  color: var(--faint);
  font-size: 11px;
  line-height: 1.35;
}

.section { padding: 28px 0 8px; }
.section h2 {
  margin: 0 0 8px;
  font-size: 28px;
  letter-spacing: -0.03em;
}
.section p.sub {
  margin: 0 0 22px;
  color: var(--muted);
  max-width: 40em;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  padding: 20px 18px 18px;
}
.card h3 {
  margin: 0 0 8px;
  font-size: 16px;
}
.card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}
.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--g1), var(--g2));
  margin-bottom: 14px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.step {
  background: var(--surface);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  padding: 20px 18px;
}
.num {
  color: var(--g2);
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.step h3 { margin: 0 0 8px; font-size: 16px; }
.step p { margin: 0; color: var(--muted); font-size: 14px; }

.note {
  margin: 36px 0;
  padding: 22px 24px;
  border-radius: var(--radius);
  background: var(--panel);
  border: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
}
.note p { margin: 6px 0 0; color: var(--muted); }

.legal {
  padding: 36px 0 80px;
  max-width: 760px;
}
.legal h1 { font-size: 36px; }
.legal .meta { color: var(--muted); margin: 0 0 28px; }
.legal h2 {
  margin: 32px 0 10px;
  font-size: 20px;
}
.legal p, .legal li {
  color: #c8d0d4;
  font-size: 15.5px;
}
.legal ul { padding-left: 1.2em; }
.legal strong { color: var(--ink); }

.form-card {
  margin: 8px 0 32px;
  padding: 22px 20px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.form-card label {
  display: block;
  margin: 14px 0 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
}
.form-card label:first-child { margin-top: 0; }
.form-card .opt { color: var(--faint); font-weight: 500; }
.form-card input,
.form-card textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font: 16px/1.4 var(--font);
}
.form-card input#client_id {
  font-family: Consolas, "Cascadia Mono", monospace;
  letter-spacing: 0.06em;
}
.form-card textarea { resize: vertical; min-height: 72px; }
.form-card .hint { margin: 6px 0 0; color: var(--faint); font-size: 13px; }
.form-card .btn { margin-top: 18px; border: 0; cursor: pointer; }
.form-card .btn:disabled { opacity: 0.55; cursor: default; }
.form-status { margin: 14px 0 0; font-size: 14px; }
.form-status.ok { color: var(--g1); }
.form-status.err { color: #e85a5a; }

footer {
  border-top: 1px solid var(--hair);
  padding: 22px 0 36px;
  color: var(--faint);
  font-size: 13px;
}
.foot {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.foot a { color: var(--muted); }
.foot a:hover { color: var(--ink); }

@media (max-width: 860px) {
  .hero-grid, .cards, .steps { grid-template-columns: 1fr; }
  .phone { display: none; }
  .note { flex-direction: column; align-items: flex-start; }
  .nav-links .hide-sm { display: none; }
}