/* CSSVariantEngine v3.0 - mobile-ch-kaiyun.com.cn */
/* Palette: slate-dashboard | Radius: sharp | Shadow: hard-offset */
/* Spacing: dense | Transition: snappy */
/* Section layouts: {"news":"masonry-2","features":"grid-2","hero":"centered","testimonials":"grid-3","partners":"grid-4","faq":"single-column","stats":"big-number","cta":"centered"} */

:root {
    --color-primary: #3b82f6;
    --color-primary-dark: #1e40af;
    --color-accent: #06b6d4;
    --color-surface: #ffffff;
    --color-text: #1e293b;
    --color-bg: #f1f5f9;
    --color-border: #cbd5e1;
    --rgb-primary: 59, 130, 246;
    --rgb-accent: 6, 182, 212;
    --radius-sm: 0;
    --radius-md: 0;
    --radius-lg: 2px;
    --radius-xl: 4px;
    --shadow-sm: 2px 2px 0 0 rgba(30, 41, 59, 0.18);
    --shadow-md: 4px 4px 0 0 rgba(30, 41, 59, 0.28), 0 0 0 2px rgba(59, 130, 246, 0.08);
    --shadow-lg: 6px 6px 0 0 rgba(30, 41, 59, 0.36), 0 0 0 4px rgba(59, 130, 246, 0.06);
    --space-section: 3.25rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --heading-weight: 800;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body {
    background:
        radial-gradient(circle at 80% -10%, rgba(59, 130, 246, 0.08), transparent 50%),
        var(--color-bg);
    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"] {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--space-card);
    transition: var(--transition);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    box-shadow: 2px 2px 0 0 rgba(30, 41, 59, 0.35);
    transition: var(--transition);
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

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

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

/* features: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }

/* hero: centered */
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }

/* testimonials: grid-3 */
.testimonial-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }

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

/* stats: big-number */
/* 大数字居中 */
                .stats-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 1.75rem; }
                .stats-grid .stat-value { font-size: 3rem; color: var(--color-primary-dark); text-shadow: 2px 2px 0 rgba(59, 130, 246, 0.14); }

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }

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

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); }
.card { border: 1px solid var(--color-border); }
header, .header, .navbar {
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow: 0 1px 0 0 rgba(15, 23, 42, 0.08);
}

/* 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: 0.625rem; }
    .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; }
}