* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", sans-serif;
  background: radial-gradient(circle at top right, #DDEFEA, #F3F7F6 45%);
  color: var(--color-text);
}

.site-header {
  background: #FFFFFFD9;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  backdrop-filter: blur(6px);
}

.site-header-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: var(--space-4);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-weight: 700;
  text-decoration: none;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-4) var(--space-6);
}