/* ─── Simple content pages (stats, terms) ─── */
.page-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--bg-header);
    backdrop-filter: saturate(180%) blur(16px);
    -webkit-backdrop-filter: saturate(180%) blur(16px);
    border-bottom: 1px solid var(--border-default);
}

.page-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 24px;
}

.page-brand {
    display: flex;
    align-items: center;
    border-radius: var(--radius-sm);
}

.page-brand img {
    display: block;
    width: 28px;
    height: 28px;
    border-radius: 6px;
    transition: opacity 0.15s var(--ease);
}

.page-brand:hover img {
    opacity: 0.8;
}

:root[data-theme="dark"] .page-brand img {
    box-shadow: 0 0 0 1px var(--border-default);
}

.page-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 36px;
    padding: 0 12px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition: background 0.15s var(--ease), color 0.15s var(--ease);
}

.page-back:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.page-content {
    max-width: 720px;
    margin: 0 auto;
    padding: 56px 24px 80px;
}

.page-content h1 {
    font-size: 30px;
    font-weight: 700;
    letter-spacing: -0.025em;
    line-height: 1.2;
    color: var(--text-primary);
}

.page-lead {
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: 15px;
}

@media (max-width: 640px) {
    :root {
        --header-height: 56px;
    }

    .page-header-inner {
        padding: 0 16px;
    }

    .page-content {
        padding: 32px 16px 56px;
    }

    .page-content h1 {
        font-size: 24px;
    }
}