:root {
    --color-primary: #2c3e50;
    --color-primary-dark: #1a252f;
    --color-accent: #3498db;
    --color-surface: #ecf0f1;
    --color-text: #2c3e50;
    --rgb-primary: 44,62,80;
    --rgb-accent: 52,152,219;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.1), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.15), 0 4px 8px rgba(0,0,0,0.1);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
    --heading-weight: 700;
    --body-line-height: 1.75;
}

body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background: linear-gradient(135deg, #eef2f7 0%, #d5dbe3 100%);
}
h1, h2, h3, h4 {
    font-weight: var(--heading-weight);
}
section, .section {
    padding-top: var(--space-section);
    padding-bottom: var(--space-section);
}
.card, [class*="card"] {
    background: linear-gradient(145deg, #ffffff, #f0f2f5);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md), 0 0 0 1px rgba(44,62,80,0.1);
    padding: var(--space-card);
    transition: var(--transition);
}
.btn, button[class*="btn"], a[class*="btn"] {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: #ffffff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm), 0 0 0 1px rgba(52,152,219,0.3);
    transition: var(--transition);
}
a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
}

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

/* news: masonry-2 */
.news-grid {
    column-count: 2;
    column-gap: var(--space-gap);
}
.news-grid .card {
    break-inside: avoid;
    margin-bottom: var(--space-gap);
}

/* features: horizontal */
.feature-list {
    display: flex;
    gap: var(--space-gap);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
}
.feature-list > * {
    flex: 0 0 300px;
    scroll-snap-align: start;
}

/* hero: left-aligned */
.hero-content {
    text-align: left;
    max-width: 600px;
}

/* testimonials: carousel */
.testimonial-list {
    display: flex;
    overflow: hidden;
}
.testimonial-list > * {
    flex: 0 0 100%;
}

/* partners: scroll */
.partner-grid {
    display: flex;
    gap: 2rem;
    overflow: hidden;
    animation: partnerScroll 20s linear infinite;
}
@keyframes partnerScroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* faq: two-column */
.faq-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-gap);
}

/* stats: grid-3 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-gap);
    text-align: center;
}

/* cta: card-style */
.cta-inner {
    background: linear-gradient(145deg, var(--color-surface), #d5dbe3);
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

/* Page Layout: wide */
.page-main {
    max-width: 1400px;
    margin: 0 auto;
}

/* 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: 2rem; --space-card: 1rem; --space-gap: 0.75rem; }
    .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; }
}