:root {
    --color-primary: #3a556f;
    --color-primary-dark: #2b4053;
    --color-accent: #6fa1bf;
    --color-surface: #f2f7fa;
    --color-text: #1f2f3d;
    --rgb-primary: 58,85,111;
    --rgb-accent: 111,161,191;
    --radius-sm: 4px;
    --radius-md: 5px;
    --radius-lg: 6px;
    --radius-xl: 8px;
    --shadow-sm: 0 1px 2px rgba(30,50,70,0.08), 0 0 2px rgba(30,50,70,0.04);
    --shadow-md: 0 4px 8px rgba(30,50,70,0.06), 0 2px 4px rgba(30,50,70,0.05);
    --shadow-lg: 0 8px 16px rgba(30,50,70,0.07), 0 4px 8px rgba(30,50,70,0.05);
    --space-section: 1.6rem;
    --space-card: 0.875rem;
    --space-gap: 0.5rem;
    --transition: 0.25s cubic-bezier(0.3, 0, 0.4, 1);
    --heading-weight: 800;
    --body-line-height: 1.7;
}

body {
    color: var(--color-text);
    line-height: var(--body-line-height);
}
h1, h2, h3, h4 {
    font-weight: var(--heading-weight);
}
section, .section {
    padding-top: var(--space-section);
    padding-bottom: var(--space-section);
}
.card, [class*="card"] {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: var(--space-card);
    transition: var(--transition);
    border-style: solid;
    border-color: transparent;
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-sm);
    transition: var(--transition);
}
a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
}

/* ========== Section Layout Variants ========== */

/* news: featured-top */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-gap);
}
.news-grid > *:first-child {
    grid-column: span 3;
}

/* features: grid-4 */
.feature-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-gap);
}

/* hero: split */
.hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    align-items: center;
}

/* testimonials: masonry */
.testimonial-list {
    column-count: 2;
    column-gap: var(--space-gap);
}
.testimonial-list > * {
    break-inside: avoid;
    margin-bottom: var(--space-gap);
}

/* partners: scroll */
.partner-grid {
    display: flex;
    gap: 1.5rem;
    overflow: hidden;
    animation: partnerScroll 20s linear infinite;
}
@keyframes partnerScroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

/* faq: single-column */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

/* stats: grid-4 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-gap);
    text-align: center;
}

/* cta: card-style */
.cta-inner {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 2.4rem;
    text-align: center;
}

/* Page Layout: narrow-centered */
.page-main {
    max-width: 860px;
    margin: 0 auto;
}

/* Conditional decorations */
a:not([class]):hover {
    color: var(--color-accent);
}
.card {
    border-left-width: 3px;
    border-left-style: solid;
    border-left-color: var(--color-primary-dark);
}
header, .header, .navbar {
    box-shadow: 0 1px 5px rgba(30,50,70,0.04), 0 2px 4px rgba(58,85,111,0.07);
}

/* Responsive */
@media (max-width: 1024px) {
    .news-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }
    .feature-list {
        grid-template-columns: repeat(2, 1fr) !important;
    }
    .partner-grid {
        grid-template-columns: repeat(3, 1fr) !important;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }
    .hero-inner {
        grid-template-columns: 1fr !important;
    }
}
@media (max-width: 640px) {
    :root {
        --space-section: 1.6rem;
        --space-card: 0.875rem;
        --space-gap: 0.5rem;
    }
    .news-grid {
        grid-template-columns: 1fr !important;
    }
    .feature-list {
        grid-template-columns: 1fr !important;
    }
    .faq-list {
        grid-template-columns: 1fr !important;
    }
    .testimonial-list {
        column-count: 1 !important;
    }
    .partner-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }
    .cta-inner {
        grid-template-columns: 1fr !important;
    }
}