:root {
    --tds-primary: #0F172A;
    --tds-secondary: #4F46E5;
    --tds-accent: #8B5CF6;
    --tds-success: #10B981;
    --tds-bg: #F8FAFC;
    --tds-surface: #FFFFFF;
    --tds-border: #E2E8F0;
    --tds-muted: #64748B;
    --tds-text: #0F172A;
    --tds-radius: 12px;
    --tds-shadow: 0 1px 3px rgba(15, 23, 42, 0.08), 0 8px 24px rgba(15, 23, 42, 0.06);
    --tds-max: 1200px;
    --tds-font: 'Inter', system-ui, -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--tds-font);
    font-size: 16px;
    line-height: 1.6;
    color: var(--tds-text);
    background: var(--tds-bg);
    -webkit-font-smoothing: antialiased;
}
a { color: var(--tds-secondary); text-decoration: none; }
a:hover { color: var(--tds-accent); }
img { max-width: 100%; height: auto; display: block; }

.tds-container { width: min(100% - 32px, var(--tds-max)); margin-inline: auto; }
.tds-btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 20px; border-radius: 10px; font-weight: 600; font-size: 14px;
    border: none; cursor: pointer; transition: .2s ease;
}
.tds-btn-primary { background: var(--tds-secondary); color: #fff; }
.tds-btn-primary:hover { background: #4338CA; color: #fff; }
.tds-btn-dark { background: var(--tds-primary); color: #fff; }
.tds-btn-dark:hover { background: #1E293B; color: #fff; }
.tds-btn-ghost { background: transparent; color: var(--tds-text); border: 1px solid var(--tds-border); }
.tds-badge {
    display: inline-block; padding: 4px 10px; border-radius: 999px;
    font-size: 12px; font-weight: 600; background: #EEF2FF; color: var(--tds-secondary);
}
.tds-badge-success { background: #D1FAE5; color: #047857; }

/* Header */
.tds-header {
    background: var(--tds-surface);
    border-bottom: 1px solid var(--tds-border);
    position: sticky; top: 0; z-index: 100;
}
.tds-header-inner {
    display: flex; align-items: center; justify-content: space-between;
    min-height: 72px; gap: 24px;
}
.tds-logo { font-size: 20px; font-weight: 800; color: var(--tds-primary); letter-spacing: -.02em; }
.tds-logo span { color: var(--tds-secondary); }
.tds-nav { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.tds-nav a {
    color: var(--tds-muted); font-size: 14px; font-weight: 500;
    padding: 8px 12px; border-radius: 8px;
}
.tds-nav a:hover, .tds-nav a.active { color: var(--tds-primary); background: #F1F5F9; }
.tds-lang { display: flex; gap: 4px; font-size: 13px; font-weight: 600; }
.tds-lang a { padding: 4px 8px; border-radius: 6px; color: var(--tds-muted); }
.tds-lang a.active { background: var(--tds-primary); color: #fff; }
.tds-menu-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; }

/* Hero */
.tds-hero { padding: 64px 0 48px; }
.tds-hero-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; align-items: start; }
.tds-hero h1 {
    font-size: clamp(2rem, 4vw, 3rem); line-height: 1.1;
    font-weight: 800; letter-spacing: -.03em; margin: 0 0 16px;
}
.tds-hero-lead { font-size: 18px; color: var(--tds-muted); margin-bottom: 28px; max-width: 540px; }
.tds-search {
    display: flex; gap: 8px; background: var(--tds-surface);
    border: 1px solid var(--tds-border); border-radius: var(--tds-radius);
    padding: 6px; box-shadow: var(--tds-shadow); max-width: 560px;
}
.tds-search input {
    flex: 1; border: none; padding: 12px 14px; font-size: 15px;
    background: transparent; outline: none; font-family: inherit;
}
.tds-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.tds-tags a {
    font-size: 13px; padding: 6px 12px; border-radius: 999px;
    background: var(--tds-surface); border: 1px solid var(--tds-border); color: var(--tds-muted);
}
.tds-tags a:hover { border-color: var(--tds-secondary); color: var(--tds-secondary); }

/* Trend widgets */
.tds-trends { display: grid; gap: 16px; }
.tds-trend-card {
    background: var(--tds-surface); border: 1px solid var(--tds-border);
    border-radius: var(--tds-radius); padding: 20px; box-shadow: var(--tds-shadow);
}
.tds-trend-card h3 { margin: 0 0 12px; font-size: 14px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--tds-muted); }
.tds-trend-item { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; border-bottom: 1px solid #F1F5F9; font-size: 14px; }
.tds-trend-item:last-child { border-bottom: none; }
.tds-trend-growth { color: var(--tds-success); font-weight: 700; font-size: 13px; }

/* CTA banner */
.tds-cta {
    background: linear-gradient(135deg, var(--tds-primary) 0%, #1E293B 100%);
    color: #fff; border-radius: var(--tds-radius); padding: 32px 40px;
    display: flex; align-items: center; justify-content: space-between; gap: 24px;
    margin: 48px 0;
}
.tds-cta h2 { margin: 0 0 8px; font-size: 24px; }
.tds-cta p { margin: 0; opacity: .85; }

/* Section grid */
.tds-section { padding: 48px 0; }
.tds-section-head { display: flex; justify-content: space-between; align-items: end; margin-bottom: 24px; }
.tds-section-head h2 { margin: 0; font-size: 28px; font-weight: 800; letter-spacing: -.02em; }
.tds-grid-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.tds-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.tds-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.tds-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.tds-card {
    background: var(--tds-surface); border: 1px solid var(--tds-border);
    border-radius: var(--tds-radius); overflow: hidden; box-shadow: var(--tds-shadow);
    transition: transform .2s, box-shadow .2s;
}
.tds-card:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(15,23,42,.1); }
.tds-card-body { padding: 20px; }
.tds-card h3 { margin: 0 0 8px; font-size: 17px; font-weight: 700; }
.tds-card p { margin: 0; font-size: 14px; color: var(--tds-muted); }
.tds-card-icon {
    width: 48px; height: 48px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px; margin-bottom: 12px;
}
.tds-card-img { aspect-ratio: 16/10; object-fit: cover; width: 100%; background: #E2E8F0; }
.tds-card-meta { font-size: 12px; color: var(--tds-muted); margin-top: 12px; }

/* Social proof */
.tds-trust { text-align: center; padding: 40px 0; border-top: 1px solid var(--tds-border); }
.tds-trust p { color: var(--tds-muted); font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; margin-bottom: 20px; }
.tds-trust-logos { display: flex; flex-wrap: wrap; justify-content: center; gap: 32px; }
.tds-trust-logos span { font-size: 18px; font-weight: 700; color: #94A3B8; }

/* Content pages */
.tds-page-hero { padding: 40px 0 24px; }
.tds-breadcrumb { font-size: 13px; color: var(--tds-muted); margin-bottom: 16px; }
.tds-breadcrumb a { color: var(--tds-muted); }
.tds-page-title { font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 800; margin: 0 0 12px; letter-spacing: -.02em; }
.tds-prose { max-width: 720px; }
.tds-prose h2 { margin-top: 32px; font-size: 22px; }
.tds-layout-with-sidebar { display: grid; grid-template-columns: 1fr 300px; gap: 40px; align-items: start; }
.tds-sidebar-card {
    background: var(--tds-surface); border: 1px solid var(--tds-border);
    border-radius: var(--tds-radius); padding: 20px; position: sticky; top: 96px;
}
.tds-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.tds-table th, .tds-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--tds-border); }
.tds-table th { font-weight: 600; background: #F8FAFC; }
.tds-table tr:hover td { background: #F8FAFC; }

/* Ads */
.tds-ad { margin: 24px 0; text-align: center; overflow: hidden; min-height: 90px; }
.tds-ad-label { font-size: 10px; color: #94A3B8; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 4px; }

/* Footer */
.tds-footer { background: var(--tds-primary); color: #CBD5E1; padding: 56px 0 24px; margin-top: 64px; }
.tds-footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 40px; margin-bottom: 40px; }
.tds-footer h4 { color: #fff; margin: 0 0 16px; font-size: 14px; }
.tds-footer a { color: #94A3B8; font-size: 14px; display: block; margin-bottom: 8px; }
.tds-footer a:hover { color: #fff; }
.tds-footer-bottom {
    border-top: 1px solid #1E293B; padding-top: 24px;
    display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px;
    font-size: 13px;
}
.tds-newsletter input {
    width: 100%; padding: 10px 12px; border-radius: 8px; border: 1px solid #334155;
    background: #1E293B; color: #fff; margin-bottom: 8px; font-family: inherit;
}

/* Mobile */
@media (max-width: 1024px) {
    .tds-hero-grid, .tds-layout-with-sidebar { grid-template-columns: 1fr; }
    .tds-grid-5 { grid-template-columns: repeat(2, 1fr); }
    .tds-grid-4, .tds-grid-3 { grid-template-columns: repeat(2, 1fr); }
    .tds-footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .tds-nav { display: none; }
    .tds-menu-toggle { display: block; }
    .tds-nav.open {
        display: flex; flex-direction: column; position: absolute;
        top: 72px; left: 0; right: 0; background: var(--tds-surface);
        border-bottom: 1px solid var(--tds-border); padding: 16px;
    }
    .tds-grid-5, .tds-grid-4, .tds-grid-3, .tds-grid-2 { grid-template-columns: 1fr; }
    .tds-cta { flex-direction: column; text-align: center; }
    .tds-footer-grid { grid-template-columns: 1fr; }
}