:root {
  color-scheme: light;
  --bg: #f5f5f7;
  --panel: #ffffff;
  --panel-light: #fbfbfd;
  --accent: #0a84ff;
  --accent-strong: #5ac8fa;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --border: rgba(210, 210, 215, 0.8);
  --shadow: 0 24px 60px rgba(29, 29, 31, 0.12);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  background: radial-gradient(circle at top, rgba(10, 132, 255, 0.12), transparent 45%),
    radial-gradient(circle at 20% 20%, rgba(90, 200, 250, 0.1), transparent 40%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  background: rgba(245, 245, 247, 0.9);
  border-bottom: 1px solid var(--border);
}

.nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 20px;
}

.brand span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 14px;
  color: var(--muted);
}

.nav-links a {
  padding: 8px 12px;
  border-radius: 999px;
  transition: all 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: rgba(10, 132, 255, 0.12);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.hero {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  align-items: center;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(251, 251, 253, 0.9));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow);
}

.hero h1 {
  font-size: clamp(32px, 4vw, 44px);
  line-height: 1.2;
}

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

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #ffffff;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button.secondary {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(10, 132, 255, 0.2);
}

.section {
  margin-top: 48px;
}

.section h2 {
  font-size: 28px;
  margin-bottom: 16px;
}

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

.grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin-top: 24px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: 0 20px 40px rgba(29, 29, 31, 0.08);
}

.card h3 {
  font-size: 20px;
  margin-bottom: 10px;
}

.card ul {
  list-style: none;
  display: grid;
  gap: 10px;
  margin-top: 12px;
  color: var(--muted);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.stat-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.stat {
  padding: 18px;
  border-radius: var(--radius-sm);
  background: var(--panel-light);
  border: 1px solid var(--border);
}

.stat strong {
  font-size: 24px;
  display: block;
}

.iframe-wrapper {
  background: var(--panel);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  padding: 20px;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow);
}

.iframe-wrapper iframe {
  width: min(100%, 720px);
  height: 480px;
  border-radius: 12px;
  border: none;
  background: #000;
}

.review {
  display: grid;
  gap: 12px;
  padding: 20px;
  background: var(--panel-light);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.review span {
  color: var(--accent);
  font-weight: 600;
}

.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 18px 0;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
}

.faq-answer {
  margin-top: 10px;
  color: var(--muted);
  display: none;
}

.faq-item.open .faq-answer {
  display: block;
}

footer {
  border-top: 1px solid var(--border);
  padding: 32px 24px;
  color: var(--muted);
  text-align: center;
  font-size: 14px;
  background: var(--panel-light);
}

footer a {
  color: var(--accent);
}

@media (max-width: 768px) {
  .nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    padding: 30px;
  }

  .iframe-wrapper iframe {
    height: 360px;
  }
}

@media (max-width: 560px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .nav-links {
    gap: 10px;
  }

  .iframe-wrapper iframe {
    height: 300px;
  }
}