:root {
  color-scheme: light;
  --font-sans: "SF Pro Display", "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", sans-serif;
  --bg-gradient-top: #f4f6fb;
  --bg-gradient-middle: #f8f9fd;
  --bg-gradient-bottom: #e7ecf8;
  --accent-primary: #007aff;
  --accent-secondary: #34c759;
  --text-primary: #0b1a33;
  --text-secondary: rgba(11, 26, 51, 0.6);
  --text-tertiary: rgba(11, 26, 51, 0.4);
  --surface-high: rgba(255, 255, 255, 0.78);
  --surface-medium: rgba(255, 255, 255, 0.6);
  --surface-border: rgba(255, 255, 255, 0.55);
  --surface-shadow: 0 18px 42px rgba(15, 23, 42, 0.08);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --radius-xs: 8px;
}

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

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  background: linear-gradient(160deg, var(--bg-gradient-top), var(--bg-gradient-middle) 55%, var(--bg-gradient-bottom));
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(1200px circle at 10% -10%, rgba(120, 170, 255, 0.28), transparent 55%),
    radial-gradient(900px circle at 90% 0%, rgba(255, 182, 193, 0.25), transparent 55%),
    radial-gradient(1000px circle at 20% 95%, rgba(160, 220, 180, 0.22), transparent 60%);
  pointer-events: none;
  z-index: 0;
}

body > * {
  position: relative;
  z-index: 1;
}

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

p {
  margin: 0 0 1rem;
  line-height: 1.6;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 600;
  letter-spacing: -0.01em;
}

button {
  font-family: var(--font-sans);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.app-shell {
  width: min(1120px, 92vw);
  margin: 0 auto;
  padding: 48px 0 64px;
  display: flex;
  flex-direction: column;
  gap: 64px;
}

@media (max-width: 768px) {
  .app-shell {
    padding: 32px 0 48px;
    gap: 48px;
  }
}