/* CSSVariantEngine v3.0 — lilidianjing.org.cn */
/* Palette: high-contrast-block | Radius: micro-rounded | Shadow: offset-solid */
/* Spacing: tight | Transition: snappy */
/* Section layouts: {"news":"featured-top","features":"horizontal","hero":"centered","testimonials":"masonry","partners":"grid-4","faq":"two-column","stats":"grid-4","cta":"card-style"} */

:root {
    --color-primary: #d00000;
    --color-primary-dark: #6a040f;
    --color-accent: #ffba08;
    --color-surface: #007f5f;
    --color-text: #f8f9fa;
    --rgb-primary: 208, 0, 0;
    --rgb-accent: 255, 186, 8;
    --radius-sm: 2px;
    --radius-md: 3px;
    --radius-lg: 5px;
    --radius-xl: 6px;
    --shadow-sm: 1px 1px 0 rgba(0, 0, 0, 0.22);
    --shadow-md: 2px 2px 0 rgba(0, 0, 0, 0.28);
    --shadow-lg: 3px 3px 0 rgba(0, 0, 0, 0.35);
    --space-section: 1.7rem;
    --space-card: 0.9rem;
    --space-gap: 0.65rem;
    --transition: 0.15s cubic-bezier(0.2, 0.3, 0.4, 1);
    --heading-weight: 600;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { color: var(--color-text); background-color: #03071e; line-height: var(--body-line-height); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 1px 0 rgba(0,0,0,0.4); }
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: #121629; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background-color: var(--color-primary); color: white; border: 2px solid var(--color-accent); }
a:not([class]) { color: var(--color-accent); transition: var(--transition); text-decoration-thickness: 2px; }

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

/* news: featured-top */
/* 首篇横跨全宽 */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
.news-grid > *:first-child { grid-column: span 3; background-color: var(--color-primary-dark); }
.news-grid > *:nth-child(odd):not(:first-child) { background-color: var(--color-primary); }
.news-grid > *:nth-child(even) { background-color: var(--color-surface); }

/* features: horizontal */
/* 水平滚动 */
.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; background-color: #212529; border: 1px solid var(--color-accent); }
.feature-list > *:nth-child(3n+1) { background-color: var(--color-surface); }
.feature-list > *:nth-child(3n+2) { background-color: var(--color-primary); }

/* hero: centered */
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }
.hero-content h1 { color: var(--color-accent); }

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
.testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); background-color: var(--color-primary-dark); border-left: 3px solid var(--color-accent); }
.testimonial-list > *:nth-child(odd) { background-color: var(--color-surface); }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }
.partner-grid > * { background-color: #1b2430; border: 1px solid rgba(var(--rgb-accent), 0.4); padding: 0.5rem; }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }
.faq-list > * { background-color: var(--color-surface); border: 1px solid var(--color-accent); }
.faq-list > *:nth-child(even) { background-color: var(--color-primary-dark); }

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }
.stats-grid > * { background-color: var(--color-primary); border: 1px solid var(--color-accent); }

/* cta: card-style */
.cta-inner { background: linear-gradient(135deg, var(--color-primary), var(--color-surface)); border-radius: var(--radius-xl); padding: 3rem; text-align: center; border: 2px solid var(--color-accent); }

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
.page-main { max-width: 1200px; margin: 0 auto; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.card { border: 1px solid var(--color-accent); }
header, .header, .navbar { box-shadow: 1px 2px 0 rgba(106,4,15,0.4); background-color: #03071e; border-bottom: 2px solid var(--color-primary); }

/* 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: 1.7rem; --space-card: 0.9rem; --space-gap: 0.65rem; }
    .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; }
}