:root {
  --bg: #050816;
  --bg-alt: #0b1020;
  --card-bg: #0f172a;
  --accent: #22c55e;
  --accent-soft: rgba(34, 197, 94, 0.12);
  --accent-hover: #16a34a;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --border: rgba(148, 163, 184, 0.4);
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.85);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-full: 999px;
  --container: 1120px;
  --transition: 220ms ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background: radial-gradient(circle at top, #172554 0, #020617 55%, #000 100%);
  color: var(--text);
  line-height: 1.6;
}

/* layout */

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 80px 0;
}

.section-alt {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), #020617 100%);
}

.section-header {
  text-align: left;
  margin-bottom: 32px;
}

.section-header h2 {
  font-size: 32px;
  margin: 0 0 8px;
  letter-spacing: -0.03em;
}

.section-header p {
  margin: 0;
  color: var(--muted);
}

/* header */

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: linear-gradient(
      to bottom,
      rgba(15, 23, 42, 0.95),
      rgba(15, 23, 42, 0.7),
      transparent
    );
  border-bottom: 1px solid rgba(148, 163, 184, 0.2);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  background: radial-gradient(circle at 30% 0, #4ade80, #16a34a 45%, #065f46);
  color: #ecfdf5;
  font-weight: 700;
  font-size: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 12px 25px rgba(16, 185, 129, 0.45);
}

.logo-text {
  font-weight: 600;
  letter-spacing: 0.04em;
  font-size: 15px;
  text-transform: uppercase;
  color: #e5e7eb;
}

.nav {
  display: flex;
  gap: 18px;
  align-items: center;
}

.nav a {
  text-decoration: none;
  font-size: 14px;
  color: var(--muted);
  padding: 6px 10px;
  border-radius: 999px;
  transition: color var(--transition), background var(--transition),
    transform var(--transition);
}

.nav a:hover {
  color: #e5e7eb;
  background: rgba(15, 23, 42, 0.9);
  transform: translateY(-1px);
}

.header-phone {
  font-size: 14px;
  font-weight: 500;
  color: #e5e7eb;
  text-decoration: none;
  padding: 7px 14px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: radial-gradient(circle at top left, #111827, #020617 60%);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.9);
  transition: border-color var(--transition), background var(--transition),
    transform var(--transition), box-shadow var(--transition);
}

.header-phone:hover {
  border-color: var(--accent);
  background: radial-gradient(circle at top left, #022c22, #020617 60%);
  transform: translateY(-1px);
  box-shadow: 0 20px 50px rgba(6, 95, 70, 0.7);
}

/* burger */

.burger {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  padding: 4px;
  cursor: pointer;
}

.burger span {
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background: #cbd5f5;
}

/* banner (slider on top) */

.banner {
  padding: 70px 0 40px;
  background: radial-gradient(circle at top, rgba(15, 23, 42, 0.9), #020617 80%);
}

.banner-header {
  text-align: left;
  margin-bottom: 18px;
}

.banner-header h2 {
  margin: 6px 0 4px;
  font-size: 26px;
  letter-spacing: -0.03em;
}

.banner-header p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.banner-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
  background: rgba(15, 23, 42, 0.9);
}

.banner-shell {
  position: relative;
}

.banner-slider {
  position: relative;
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.7);
  box-shadow: 0 22px 55px rgba(15, 23, 42, 0.9);
  height: 360px;
  background: #000;
}

.banner-slider img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;  /* фото видно полностью */
  background: #000;
  opacity: 0;
  transition: opacity 0.6s ease;
}

.banner-slider img.active {
  opacity: 1;
}

/* overlay on banner */

.banner-overlay {
  position: absolute;
  left: 30px;
  bottom: 24px;
  max-width: 360px;
  padding: 10px 14px;
  border-radius: 14px;
  background: linear-gradient(
    to right,
    rgba(15, 23, 42, 0.92),
    rgba(15, 23, 42, 0.7)
  );
  border: 1px solid rgba(148, 163, 184, 0.6);
  backdrop-filter: blur(10px);
  box-shadow: 0 14px 35px rgba(15, 23, 42, 0.9);
}

.banner-overlay-badge {
  display: inline-block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin-bottom: 4px;
}

.banner-overlay h3 {
  margin: 0 0 4px;
  font-size: 16px;
}

.banner-overlay p {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

/* hero */

.hero {
  padding: 40px 0 72px;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 32px;
  align-items: center;
}

.hero-content h1 {
  font-size: 40px;
  line-height: 1.1;
  margin: 0 0 14px;
  letter-spacing: -0.05em;
}

.hero-subtitle {
  margin: 0 0 24px;
  color: var(--muted);
  max-width: 420px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 20px;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition), color var(--transition),
    box-shadow var(--transition), border-color var(--transition),
    transform var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #22c55e);
  color: #022c22;
  box-shadow: 0 16px 35px rgba(34, 197, 94, 0.55);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-hover), #16a34a);
  transform: translateY(-1px);
  box-shadow: 0 22px 55px rgba(22, 163, 74, 0.7);
}

.btn-outline {
  background: rgba(15, 23, 42, 0.9);
  border-color: rgba(148, 163, 184, 0.7);
  color: var(--text);
}

.btn-outline:hover {
  border-color: var(--accent);
  background: rgba(6, 95, 70, 0.9);
}

.btn-full {
  width: 100%;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 8px;
}

.meta-label {
  display: block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.meta-value {
  display: block;
  font-size: 14px;
  color: #e5e7eb;
}

/* hero card */

.hero-card {
  position: relative;
  background: radial-gradient(circle at top left, #111827 0, #020617 55%);
  border-radius: 26px;
  padding: 22px 22px 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.hero-card::before {
  content: "";
  position: absolute;
  inset: -40%;
  background:
    radial-gradient(circle at 0 0, rgba(56, 189, 248, 0.25), transparent 55%),
    radial-gradient(circle at 100% 0, rgba(52, 211, 153, 0.3), transparent 45%),
    radial-gradient(circle at 50% 120%, rgba(59, 130, 246, 0.3), transparent 55%);
  opacity: 0.45;
  pointer-events: none;
}

.hero-card > * {
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  background: rgba(15, 23, 42, 0.92);
  border: 1px solid rgba(148, 163, 184, 0.7);
  color: var(--muted);
  margin-bottom: 8px;
}

.hero-badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: #22c55e;
  box-shadow: 0 0 10px rgba(34, 197, 94, 0.9);
}

.hero-card h2 {
  margin: 0 0 14px;
  font-size: 20px;
}

.hero-form {
  display: grid;
  gap: 10px;
}

.hero-form label {
  display: grid;
  gap: 4px;
  font-size: 13px;
  color: #e5e7eb;
}

/* form controls */

input,
select,
textarea {
  width: 100%;
  font: inherit;
  padding: 8px 11px;
  border-radius: 11px;
  border: 1px solid rgba(148, 163, 184, 0.55);
  background: rgba(15, 23, 42, 0.88);
  color: var(--text);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition),
    background var(--transition), transform var(--transition);
}

input::placeholder,
textarea::placeholder {
  color: rgba(148, 163, 184, 0.9);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(34, 197, 94, 0.6);
  background: rgba(15, 23, 42, 0.98);
  transform: translateY(-0.5px);
}

.form-note {
  margin: 4px 0 0;
  font-size: 11px;
  color: var(--muted);
}

/* grid / cards */

.grid {
  display: grid;
  gap: 18px;
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  background: radial-gradient(circle at top left, #020617, #020617 65%);
  border-radius: var(--radius-lg);
  padding: 20px 18px;
  border: 1px solid var(--border);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.7);
  transform-origin: center;
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition), background var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(34, 197, 94, 0.7);
  box-shadow: 0 22px 55px rgba(6, 95, 70, 0.7);
  background: radial-gradient(circle at top left, #022c22, #020617 70%);
}

.card h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.card p {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 14px;
}

.card-list {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 13px;
  color: #cbd5f5;
}

.card-list li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 4px;
}

.card-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent);
}

/* benefits */

.benefit {
  background: rgba(15, 23, 42, 0.9);
  border-radius: var(--radius-md);
  padding: 16px 14px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.8);
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition), background var(--transition);
}

.benefit:hover {
  transform: translateY(-3px);
  border-color: rgba(34, 197, 94, 0.8);
  background: radial-gradient(circle at top, #022c22, #020617 60%);
}

.benefit-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: var(--radius-full);
  background: rgba(15, 23, 42, 0.9);
  margin-bottom: 6px;
  font-size: 16px;
}

/* pricing */

.pricing-table {
  border-radius: 20px;
  border: 1px solid var(--border);
  overflow: hidden;
  background: rgba(15, 23, 42, 0.95);
  box-shadow: var(--shadow-soft);
  font-size: 14px;
}

.pricing-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  padding: 12px 18px;
  border-bottom: 1px solid rgba(30, 64, 175, 0.45);
}

.pricing-row:last-child {
  border-bottom: none;
}

.pricing-header-row {
  background: linear-gradient(
    to right,
    rgba(30, 64, 175, 0.8),
    rgba(8, 47, 73, 0.95)
  );
  font-weight: 600;
  color: #e5e7eb;
}

.pricing-note {
  margin-top: 16px;
  color: var(--muted);
}

/* contacts */

.contacts-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 28px;
  align-items: flex-start;
}

.contacts-info {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.contacts-card {
  background: radial-gradient(circle at top left, #111827, #020617 70%);
  border-radius: 22px;
  padding: 20px 18px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
}

.contacts-card h3 {
  margin: 0 0 12px;
}

.contacts-form {
  display: grid;
  gap: 10px;
}

.contacts-form label {
  display: grid;
  gap: 4px;
  font-size: 13px;
}

/* footer */

.footer {
  border-top: 1px solid rgba(30, 64, 175, 0.7);
  padding: 18px 0 20px;
  background: radial-gradient(circle at top, #020617, #020617 70%);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: space-between;
  font-size: 12px;
  color: var(--muted);
}

/* responsive */

@media (max-width: 960px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-card {
    order: -1;
  }

  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contacts-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 720px) {
  .header-inner {
    gap: 10px;
  }

  .nav {
    position: fixed;
    inset: 56px 14px auto 14px;
    flex-direction: column;
    padding: 10px 10px 12px;
    border-radius: 16px;
    background: rgba(15, 23, 42, 0.98);
    border: 1px solid rgba(148, 163, 184, 0.7);
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.9);
    transform-origin: top;
    transform: scaleY(0.9);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition), transform var(--transition);
  }

  .nav.nav-open {
    opacity: 1;
    transform: scaleY(1);
    pointer-events: auto;
  }

  .burger {
    display: inline-flex;
  }

  .header-phone {
    display: none;
  }

  .banner {
    padding: 64px 0 32px;
  }

  .banner-slider {
    height: 260px;
  }

  .banner-overlay {
    left: 14px;
    right: 14px;
    bottom: 14px;
    max-width: none;
  }

  .hero {
    padding: 32px 0 56px;
  }

  .hero-content h1 {
    font-size: 30px;
  }

  .section {
    padding: 56px 0;
  }

  .grid-3,
  .grid-4 {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .banner-slider {
    height: 220px;
  }
}