:root {
    --color-primary: #e63946;
    --color-primary-dark: #c1121f;
    --color-accent: #f4a261;
    --color-surface: #fef9e7;
    --color-text: #264653;
    --rgb-primary: 230,57,70;
    --rgb-accent: 244,162,97;
    --radius-sm: 2px;
    --radius-md: 4px;
    --radius-lg: 6px;
    --radius-xl: 8px;
    --shadow-sm: none;
    --shadow-md: none;
    --shadow-lg: none;
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --heading-weight: 700;
    --body-line-height: 1.7;
}

body { 
    color: var(--color-text); 
    line-height: var(--body-line-height); 
    background-color: #ffffff;
}
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-lg); 
    box-shadow: var(--shadow-md); 
    padding: var(--space-card); 
    transition: var(--transition); 
    background-color: #ffffff;
}
.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: var(--transition); 
}
a:not([class]) { 
    color: var(--color-primary); 
    transition: var(--transition); 
}

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

/* news: grid-3 */
.news-grid { 
    display: grid; 
    grid-template-columns: repeat(3, 1fr); 
    gap: var(--space-gap); 
    background-color: #fef9e7;
}

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

/* hero: overlay */
.hero { 
    position: relative; 
    min-height: 70vh; 
    display: flex; 
    align-items: center; 
    background-color: #2d3436; 
    color: #ffffff;
}
.hero-content { 
    position: relative; 
    z-index: 1; 
}

/* testimonials: masonry */
.testimonial-list { 
    column-count: 2; 
    column-gap: var(--space-gap); 
    background-color: #fef9e7;
}
.testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }

/* partners: grid-6 */
.partner-grid { 
    display: grid; 
    grid-template-columns: repeat(6, 1fr); 
    gap: var(--space-gap); 
    align-items: center; 
    background-color: #ffffff;
}

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

/* stats: grid-4 */
.stats-grid { 
    display: grid; 
    grid-template-columns: repeat(4, 1fr); 
    gap: var(--space-gap); 
    text-align: center; 
    background-color: #2d3436; 
    color: #ffffff;
}

/* cta: split */
.cta-inner { 
    display: grid; 
    grid-template-columns: 1fr auto; 
    align-items: center; 
    gap: 2rem; 
    background-color: #fef9e7;
}

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

/* 条件性装饰 */
.card { 
    border-left: 3px solid var(--color-primary); 
    background-color: #ffffff;
}
header, .header, .navbar { 
    box-shadow: none; 
    background-color: #2d3436; 
    color: #ffffff;
}

/* 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; }
}