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

html {
    min-height: 100%;
    background: var(--color-gray-50);
}

body {
    min-height: 100vh;
    margin: 0;
    color: var(--color-gray-900);
    background:
    radial-gradient(
        circle at top right,
        var(--color-primary-100),
                    transparent 34rem
    ),
    var(--color-gray-50);
    font-family: var(--font-family);
    line-height: 1.55;
}

a {
    color: var(--color-primary-700);
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}

a:hover {
    color: var(--color-accent-700);
}

h1,
h2,
h3 {
    margin-top: 0;
    color: var(--color-primary-900);
    line-height: 1.2;
}

h1 {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
}

button,
input,
select,
textarea {
    font: inherit;
}

.container {
    width: min(100% - 32px, var(--content-width));
    margin-inline: auto;
}

.site-header {
    position: sticky;
    z-index: 20;
    top: 0;
    color: var(--color-white);
    background: var(--color-primary-900);
    box-shadow: var(--shadow-sm);
}

.header-inner {
    display: flex;
    min-height: 72px;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--color-white);
    font-weight: 750;
    text-decoration: none;
    min-width: 0;
}

.brand-logo-box {
    display: flex;
    flex: 0 0 auto;
    align-items: center;
    padding: 5px 7px;
    border-radius: var(--radius-sm);
    background: var(--color-white);
}

.brand-logo {
    display: block;
    width: 108px;
    height: auto;
    max-height: 32px;
    object-fit: contain;
}

.brand-name {
    max-width: 250px;
    font-size: 0.88rem;
    line-height: 1.22;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 6px;
}

.site-nav a {
    padding: 9px 13px;
    border-radius: var(--radius-sm);
    color: var(--color-white);
    text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
    background: rgb(255 255 255 / 14%);
}

.nav-toggle {
    display: none;
    padding: 9px 12px;
    border: 1px solid rgb(255 255 255 / 35%);
    border-radius: var(--radius-sm);
    color: var(--color-white);
    background: transparent;
}

.page-shell {
    padding-block: clamp(28px, 6vw, 64px);
}

.page-card {
    padding: clamp(22px, 5vw, 46px);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-lg);
    background: rgb(255 255 255 / 94%);
    box-shadow: var(--shadow-md);
}

.site-footer {
    padding: 24px 0 36px;
    color: var(--color-gray-500);
    font-size: 0.875rem;
}

.site-header .container {
    width: min(100% - 32px, 1800px);
}