:root {
  color-scheme: light;
  --page-bg: #f5fbff;
  --card-bg: rgba(255, 255, 255, 0.9);
  --card-border: rgba(218, 228, 238, 0.9);
  --text-main: #18283f;
  --text-soft: #5c708c;
  --accent: #4a90d9;
  --accent-strong: #357ac5;
  --accent-soft: #e8f4ff;
  --shadow: 0 22px 50px rgba(34, 56, 84, 0.08);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Plus Jakarta Sans", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text-main);
  background:
    radial-gradient(circle at top left, rgba(114, 184, 242, 0.26), transparent 28%),
    radial-gradient(circle at 85% 12%, rgba(166, 213, 255, 0.28), transparent 24%),
    linear-gradient(180deg, #f4fbff 0%, #fbfdff 48%, #ffffff 100%);
}

a {
  color: inherit;
}

.page-shell {
  width: min(1120px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 24px 0 48px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 999px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.brand img {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  box-shadow: 0 10px 20px rgba(74, 144, 217, 0.18);
}

.brand-copy strong {
  display: block;
  font-size: 1.2rem;
}

.brand-copy span {
  display: block;
  color: var(--text-soft);
  font-size: 0.92rem;
}

.topbar-link,
.button,
.button-secondary,
.related-links a {
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background 180ms ease;
}

.topbar-link {
  text-decoration: none;
  border-radius: 999px;
  padding: 12px 18px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 14px 28px rgba(74, 144, 217, 0.24);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.88fr);
  gap: 22px;
  margin-top: 24px;
}

.hero-card,
.panel,
.faq,
.related-links {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-copy {
  padding: 34px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2.4rem, 5vw, 4.6rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
}

.hero-copy p {
  margin: 18px 0 0;
  max-width: 42rem;
  font-size: 1.04rem;
  line-height: 1.8;
  color: var(--text-soft);
}

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

.button,
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 13px 20px;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.button {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 14px 30px rgba(74, 144, 217, 0.25);
}

.button-secondary {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(24, 40, 63, 0.08);
}

.topbar-link:hover,
.button:hover,
.button-secondary:hover,
.related-links a:hover {
  transform: translateY(-2px);
}

.hero-aside {
  display: grid;
  gap: 18px;
  padding: 24px;
}

.hero-visual {
  display: grid;
  gap: 14px;
  place-items: center;
  min-height: 260px;
  border-radius: 24px;
  background:
    radial-gradient(circle at 30% 20%, rgba(113, 183, 242, 0.26), transparent 32%),
    linear-gradient(180deg, #fafdff 0%, #eef7ff 100%);
}

.hero-visual img {
  width: min(100%, 260px);
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.mini-card {
  padding: 16px;
  border-radius: 20px;
  background: #fff;
  border: 1px solid rgba(221, 229, 238, 0.9);
}

.mini-card strong {
  display: block;
  font-size: 1.5rem;
  line-height: 1.1;
}

.mini-card span {
  display: block;
  margin-top: 6px;
  color: var(--text-soft);
  font-size: 0.92rem;
  line-height: 1.5;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 22px;
  margin-top: 22px;
}

.panel {
  padding: 30px;
}

.panel h2,
.faq h2,
.related-links h2 {
  margin: 0 0 14px;
  font-size: 2rem;
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.panel p,
.panel li,
.faq p,
.related-links p,
.related-links a {
  color: var(--text-soft);
  line-height: 1.8;
  font-size: 1rem;
}

.panel ul {
  margin: 0;
  padding-left: 20px;
}

.faq,
.related-links {
  padding: 24px;
}

.faq-item + .faq-item {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid rgba(220, 228, 237, 0.9);
}

.faq-item h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.related-links nav {
  display: grid;
  gap: 10px;
}

.related-links a {
  display: block;
  padding: 13px 14px;
  border-radius: 16px;
  text-decoration: none;
  background: #fff;
  border: 1px solid rgba(220, 228, 237, 0.9);
  color: var(--text-main);
  font-weight: 700;
}

.footer-note {
  margin-top: 22px;
  text-align: center;
  color: var(--text-soft);
  font-size: 0.92rem;
}

@media (max-width: 860px) {
  .hero,
  .content-grid {
    grid-template-columns: 1fr;
  }

  .topbar {
    border-radius: 24px;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100vw - 20px, 1120px);
    padding-top: 12px;
  }

  .topbar {
    padding: 14px;
    align-items: flex-start;
    flex-direction: column;
  }

  .hero-copy,
  .panel,
  .faq,
  .related-links {
    padding: 22px;
  }

  .mini-grid {
    grid-template-columns: 1fr;
  }
}