:root {
  --bg: #0b0c0f;
  --card: rgba(255, 255, 255, 0.06);
  --text: #e6e7eb;
  --muted: #9aa0ab;
  --accent: #6ee7ff;
  --accent-2: #a78bfa;
  --success: #34d399;
  --danger: #f87171;
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(1200px 800px at 20% -10%, #0f172a 0%, #0b0c0f 50%, #090a0c 100%);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: saturate(180%) blur(16px);
  background: rgba(10, 11, 14, 0.5);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  z-index: 50;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  font-weight: 700;
  letter-spacing: 0.2px;
}
.logo .accent { color: var(--accent); }
.nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 18px;
  transition: color .2s ease;
}
.nav a:hover { color: var(--text); }

.hero {
  padding: 72px 0 24px;
  text-align: center;
}
.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(32px, 4vw, 54px);
  line-height: 1.06;
  letter-spacing: -0.02em;
}
.subtitle {
  margin: 0 auto 22px;
  max-width: 760px;
  color: var(--muted);
}
.cta-row { display: flex; gap: 12px; justify-content: center; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 18px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.1);
  text-decoration: none;
  color: var(--text);
  transition: transform .15s ease, background .2s ease, opacity .2s ease, box-shadow .2s ease;
  will-change: transform;
}
.btn:hover { transform: translateY(-1px); }
.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0a0a0a;
  border: none;
  box-shadow: 0 10px 24px rgba(136, 216, 255, 0.25);
}
.btn.ghost { background: transparent; }
.btn.full { width: 100%; }

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  padding: 24px 0 48px;
}
.feature {
  background: var(--card);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--shadow);
  transition: transform .2s ease, background .2s ease;
}
.feature:hover { transform: translateY(-2px); background: rgba(255,255,255,0.08); }
.icon { font-size: 22px; }

.form-section { padding: 16px 0 56px; }
.form-card {
  background: var(--card);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 20px;
  padding: 24px;
  box-shadow: var(--shadow);
}
.glass { backdrop-filter: blur(12px) saturate(160%); }

.form-card h2 { margin: 0 0 4px; font-size: 28px; }
.form-note { margin: 0 0 18px; color: var(--muted); }

.form-control { margin-bottom: 16px; }
.form-control .label, .form-control label { display: block; margin-bottom: 8px; color: var(--text); }
.form-control input[type="text"],
.form-control input[type="email"],
.form-control input[type="tel"] {
  width: 100%;
  height: 44px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 12px;
  padding: 0 12px;
  color: var(--text);
  outline: none;
  transition: border-color .2s ease, background .2s ease, box-shadow .2s ease;
}
.form-control input:focus {
  border-color: rgba(255,255,255,0.25);
  box-shadow: 0 0 0 3px rgba(136, 216, 255, 0.15);
}

.grid.two { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.chip-group { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 999px;
  cursor: pointer;
  color: var(--muted);
  transition: background .2s ease, color .2s ease, border-color .2s ease, transform .2s ease;
}
.chip:hover { transform: translateY(-1px); }
.chip input { accent-color: var(--accent); }
.chip input:checked + span { color: var(--text); }
.chip input[type="radio"] { margin: 0; }

/* Скрытый чекбокс/радио внутри .chip, используем вложенные тексты */
.chip input + * { color: var(--muted); }
.chip:has(input:checked) { color: var(--text); border-color: rgba(255,255,255,0.2); }

.crm-other { margin-top: 10px; }
.hidden { display: none; }

.actions { display: grid; gap: 10px; }
.form-status { min-height: 20px; color: var(--muted); }
.form-status.success { color: var(--success); }
.form-status.error { color: var(--danger); }

.testimonials { padding: 8px 0 64px; }
.testimonials h2 { margin: 0 0 16px; font-size: 26px; }
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.testimonial {
  background: var(--card);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 16px;
  padding: 16px;
  box-shadow: var(--shadow);
}
.testimonial p { margin: 0 0 12px; }
.author { display: flex; align-items: center; gap: 10px; color: var(--muted); }
.avatar { font-size: 20px; }

.site-footer {
  border-top: 1px solid rgba(255,255,255,0.06);
  background: rgba(10, 11, 14, 0.5);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
}
.foot-links a { color: var(--muted); text-decoration: none; margin-left: 16px; }
.foot-links a:hover { color: var(--text); }

/* Анимации появления */
.fade-in { opacity: 0; transform: translateY(8px); animation: fadeIn .8s ease forwards; }
.fade-in:nth-child(2) { animation-delay: .1s; }
.fade-in:nth-child(3) { animation-delay: .2s; }
@keyframes fadeIn {
  to { opacity: 1; transform: none; }
}

/* Адаптив */
@media (max-width: 900px) {
  .features { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .grid.two { grid-template-columns: 1fr; }
}