:root {
    --bg: #f5f7fb;
    --surface: #ffffff;
    --surface-2: #f9fbff;
    --text: #172033;
    --muted: #667085;
    --primary: #1366d6;
    --primary-dark: #0e53af;
    --border: #e4e7ec;
    --success: #0f9d58;
    --warning: #b54708;
    --shadow: 0 10px 30px rgba(17, 24, 39, 0.08);
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --container: 1200px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: Inter, Arial, sans-serif; color: var(--text); background: var(--bg); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, select { font: inherit; }
.container { width: min(var(--container), calc(100% - 32px)); margin: 0 auto; }

.site-header { background: #fff; border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 30; }
.header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { font-size: 1.4rem; font-weight: 800; letter-spacing: -0.03em; }
.header-nav { display: flex; gap: 18px; color: var(--muted); }
.header-actions { display: flex; gap: 10px; align-items: center; }
.mini-switcher select { border: 1px solid var(--border); background: #fff; border-radius: 999px; padding: 10px 14px; min-height: 42px; }
.chip { border: 1px solid var(--border); background: #fff; border-radius: 999px; padding: 10px 14px; cursor: pointer; }
.btn { display: inline-flex; align-items: center; justify-content: center; border-radius: 12px; padding: 12px 16px; font-weight: 700; border: 1px solid transparent; }
.btn-light { background: #fff; border-color: var(--border); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-block { width: 100%; }

.site-footer { margin-top: 48px; background: #fff; border-top: 1px solid var(--border); }
.footer-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; padding: 32px 0; }

.image-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 170px;
    background: linear-gradient(135deg, #eef4ff 0%, #dde8ff 100%);
    border-radius: 16px;
    color: var(--muted);
    font-weight: 700;
}
.image-placeholder.tall { min-height: 210px; }

@media (max-width: 960px) {
    .header-nav { display: none; }
    .header-inner { flex-wrap: wrap; padding: 12px 0; }
    .footer-grid { grid-template-columns: 1fr; }
}