:root {
  --bg: #f4f8ff;
  --card: #ffffff;
  --text: #152033;
  --muted: #526179;
  --line: #d8e2f0;
  --accent: #0ea5e9;
  --accent-dark: #0284c7;
  --success: #0f766e;
  --radius: 20px;
  --shadow: 0 16px 34px rgba(10, 35, 66, 0.11);
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, #ecf5ff 0%, var(--bg) 42%, #f7faff 100%);
  line-height: 1.55;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10, 37, 64, 0.2), rgba(10, 37, 64, 0.08)),
    url("https://images.unsplash.com/photo-1539037116277-4db20889f2d4?auto=format&fit=crop&w=2000&q=80")
      center/cover no-repeat;
  z-index: -3;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  background: linear-gradient(180deg, rgba(244, 248, 255, 0.76), rgba(244, 248, 255, 0.94));
  z-index: -2;
}

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(8px);
  background: rgba(255, 255, 255, 0.82);
  border-bottom: 1px solid rgba(216, 226, 240, 0.9);
}

.header-inner {
  min-height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.header-nav {
  display: flex;
  gap: 14px;
  align-items: center;
  flex-wrap: wrap;
}

.header-nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
}

.header-nav a:hover {
  color: var(--accent-dark);
}

h1,
h2,
h3,
p {
  margin: 0;
}

.hero {
  padding: 46px 0 22px;
}

.hero-card {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.98)),
    var(--card);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
  padding: 36px;
  text-align: center;
  backdrop-filter: blur(2px);
}

.top-nav {
  margin-top: 16px;
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.top-nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
}

.top-nav a:hover {
  color: var(--accent-dark);
}

.badge {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-dark);
  background: #e0f2fe;
  border-radius: 999px;
  padding: 8px 14px;
}

h1 {
  margin-top: 14px;
  font-size: clamp(30px, 4.8vw, 54px);
  line-height: 1.12;
}

.price-line {
  margin-top: 12px;
  font-size: clamp(24px, 4vw, 38px);
  font-weight: 800;
  color: #b91c1c;
}

.lead {
  margin: 14px auto 0;
  max-width: 760px;
  color: var(--muted);
  font-size: 18px;
}

.cta-row {
  margin-top: 22px;
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  text-decoration: none;
  padding: 14px 22px;
  border-radius: 12px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: #fff;
}

.btn-secondary {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
}

.section {
  padding: 24px 0;
}

.section-title {
  text-align: center;
  font-size: clamp(26px, 3.5vw, 38px);
  margin-bottom: 16px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.04);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 26px rgba(15, 23, 42, 0.08);
}

.big-points li {
  list-style: none;
  margin: 10px 0;
  color: var(--muted);
}

.big-points li::before {
  content: "✅ ";
  color: var(--success);
}

.step-num {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: #e0f2fe;
  color: var(--accent-dark);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  margin-bottom: 10px;
}

.review-stars {
  color: #f59e0b;
  letter-spacing: 1px;
  font-weight: 800;
  margin-bottom: 8px;
}

.review-text {
  color: #334155;
}

.review-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid #e2e8f0;
}

.review-meta {
  display: flex;
  flex-direction: column;
}

.review-name {
  font-weight: 700;
  line-height: 1.1;
}

.review-city {
  color: var(--muted);
  font-size: 13px;
}

.author {
  margin-top: 12px;
  font-weight: 700;
}

.final-cta {
  text-align: center;
  padding: 30px 0 58px;
}

.final-cta p {
  color: var(--muted);
  margin-top: 12px;
}

.platforms-subtitle {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 20px;
  color: var(--muted);
}

.platform-track {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  align-items: start;
}

.platform-item {
  text-align: center;
  position: relative;
}

.platform-item::after {
  content: "";
  position: absolute;
  top: 32px;
  left: calc(100% - 8px);
  width: 36px;
  border-top: 3px dotted #7ea2c6;
  opacity: 0.65;
}

.platform-item:last-child::after {
  display: none;
}

.platform-icon {
  width: 66px;
  height: 66px;
  border-radius: 50%;
  margin: 0 auto 12px;
  border: 2px solid #1f2937;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
}

.platform-item h3 {
  font-size: 18px;
  margin-bottom: 6px;
}

.platform-item p {
  color: var(--muted);
}

@media (max-width: 900px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .platform-track {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .platform-item::after {
    display: none;
  }
}

@media (max-width: 640px) {
  .hero {
    padding-top: 24px;
  }

  .hero-card {
    padding: 24px 18px;
  }

  .btn {
    width: 100%;
  }

  .header-inner {
    flex-direction: column;
    justify-content: center;
    padding: 10px 0;
  }
}