:root {
  color-scheme: light;
  --bg: #f3f8fc;
  --surface: rgba(255, 255, 255, 0.88);
  --surface-strong: #ffffff;
  --text: #10243d;
  --muted: #5b6d82;
  --stroke: rgba(191, 209, 226, 0.7);
  --primary: #0d3b66;
  --secondary: #1b6ca8;
  --accent: #29c7ac;
  --accent-dark: #1f9d73;
  --shadow: 0 28px 48px rgba(16, 36, 61, 0.09);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(27, 108, 168, 0.18), transparent 28rem),
    radial-gradient(circle at 8% 18%, rgba(41, 199, 172, 0.16), transparent 18rem),
    linear-gradient(180deg, #fbfdff 0%, var(--bg) 100%);
}

.page {
  width: min(1040px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 3rem 0 4rem;
}

.hero {
  padding: 1rem 0 2rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 0.85rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.8);
  background: rgba(13, 59, 102, 0.08);
  color: var(--primary);
  font-size: 0.88rem;
  font-weight: 700;
}

.hero h1 {
  margin: 1rem 0 0.75rem;
  font-size: clamp(2.3rem, 5vw, 4rem);
  line-height: 0.95;
  letter-spacing: -0.06em;
}

.hero p {
  margin: 0;
  max-width: 36rem;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.65;
}

.panel {
  margin-top: 1rem;
  padding: 1.35rem;
  border: 1px solid var(--stroke);
  border-radius: 1.8rem;
  background: var(--surface);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.95rem;
}

.panel-header h2 {
  margin: 0;
  font-size: 1.3rem;
}

.ghost-link {
  color: var(--secondary);
  text-decoration: none;
  font-weight: 600;
}

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

.session-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: 0.9rem;
}

.session-card,
.plan-card {
  padding: 1rem;
  border-radius: 1.35rem;
  border: 1px solid rgba(227, 236, 245, 0.9);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(242, 249, 253, 0.92));
}

.session-card strong,
.plan-card strong {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.92rem;
}

.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 1rem;
}

.plan-card {
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
}

.plan-price {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.plan-period {
  color: var(--muted);
  font-size: 0.95rem;
}

.plan-sources {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 0.42rem 0.7rem;
  border-radius: 999px;
  background: rgba(41, 199, 172, 0.12);
  color: var(--accent-dark);
  font-size: 0.84rem;
  font-weight: 700;
}

.primary-button {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 0.9rem 1.25rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  font-size: 0.98rem;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 18px 32px rgba(31, 157, 115, 0.24);
}

.primary-button:disabled {
  opacity: 0.55;
  cursor: wait;
}

.error {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  border-radius: 1rem;
  background: rgba(214, 69, 69, 0.09);
  color: #a22b2b;
}

.info-list {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
  line-height: 1.65;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-top: 1rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--stroke);
  border-radius: 1.3rem;
  background: var(--surface);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.footer-links a {
  color: var(--secondary);
  text-decoration: none;
  font-weight: 700;
}

@media (max-width: 720px) {
  .page {
    width: min(100%, calc(100% - 1rem));
    padding-top: 1.5rem;
  }

  .panel {
    padding: 1rem;
    border-radius: 1.4rem;
  }

  .panel-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}