/* CSSVariantEngine v3.0 — lecaizaixian.com.cn */
/* Palette: cool-slate | Radius: sharp-edges | Shadow: hard-offset */
/* Spacing: dense | Transition: snappy */
/* Section layouts: {"news":"featured-left","features":"horizontal","hero":"split","testimonials":"masonry","partners":"grid-6","faq":"with-sidebar","stats":"grid-4","cta":"full-bg"} */

:root {
    --color-primary: #3b82f6;
    --color-primary-dark: #2563eb;
    --color-accent: #93c5fd;
    --color-surface: #1e293b;
    --color-text: #f8fafc;
    --rgb-primary: 59,130,246;
    --rgb-accent: 147,197,253;
    --radius-sm: 0px;
    --radius-md: 2px;
    --radius-lg: 3px;
    --radius-xl: 4px;
    --shadow-sm: 2px 2px 0px #2563eb;
    --shadow-md: 4px 4px 0px #334155;
    --shadow-lg: 6px 6px 0px #0f172a;
    --space-section: 1.75rem;
    --space-card: 0.875rem;
    --space-gap: 0.75rem;
    --transition: 0.15s ease-out;
    --heading-weight: 800;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { background-color: var(--color-surface); color: var(--color-text); line-height: var(--body-line-height); caret-color: var(--color-primary); }
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-color: #ffffff; color: #1e293b; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); border: 3px solid var(--color-primary); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); border: 2px solid var(--color-primary-dark); background-color: var(--color-primary); color: #ffffff; }
a:not([class]) { color: var(--color-accent); transition: var(--transition); }

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

/* news: featured-left */
/* 左大右小 (1大+2小) */
                .news-grid { display: grid; grid-template-columns: 2fr 1fr; grid-template-rows: auto auto; gap: var(--space-gap); }
                .news-grid > *:first-child { grid-row: span 2; }

/* 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; }

/* hero: split */
/* 左文右图 */
                .hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; 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: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center; }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }

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

/* cta: full-bg */
.cta-section { background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%); color: #fff; padding: 4rem 2rem; }

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

/* 条件性装饰 */
.card:hover { transform: translate(-2px, -2px); box-shadow: var(--shadow-lg); }
header, .header, .navbar { background-color: #ffffff; box-shadow: var(--shadow-md); accent-color: var(--color-primary); border-bottom: 3px 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: 1.75rem; --space-card: 0.875rem; --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; }
}