/* CSSVariantEngine v3.0 — baijiaoupei.net.cn */
/* Palette: cool-slate | Radius: compact | Shadow: multi-layer gradient-accented */
/* Spacing: dense | Transition: 0.5s smooth cubic-bezier */
/* Section layouts: {"news":"featured-left","features":"horizontal","hero":"split","testimonials":"masonry","partners":"scroll","faq":"two-column","stats":"grid-3","cta":"card-style"} */

:root {
    --color-primary: #3b82f6;
    --color-primary-dark: #1e293b;
    --color-accent: #0ea5e9;
    --color-surface: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    --color-text: #f1f5f9;
    --rgb-primary: 59, 130, 246;
    --rgb-accent: 14, 165, 233;
    --radius-sm: 2px;
    --radius-md: 6px;
    --radius-lg: 10px;
    --radius-xl: 14px;
    --shadow-sm: 0 1px 3px rgba(30, 41, 59, 0.12), 0 1px 2px rgba(30, 41, 59, 0.08);
    --shadow-md: 0 4px 6px -1px rgba(30, 41, 59, 0.15), 0 2px 4px -2px rgba(30, 41, 59, 0.1), 0 0 0 1px rgba(59, 130, 246, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(30, 41, 59, 0.2), 0 4px 6px -4px rgba(59, 130, 246, 0.1), 0 0 20px rgba(59, 130, 246, 0.05);
    --space-section: 2.4rem;
    --space-card: 1rem;
    --space-gap: 0.875rem;
    --transition: 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
    --heading-weight: 600;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(180deg, #1e293b 0%, #334155 100%) no-repeat fixed min-height: 100vh; }
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: var(--color-surface); color: #1e293b; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, #3b82f6 0%, #0ea5e9 100%); color: #ffffff; border: none; box-shadow: var(--shadow-sm); }
a:not([class]) { color: var(--color-primary); 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: scroll */
/* 自动滚动 */
.partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 25s 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(135deg, #3b82f6 0%, #0ea5e9 50%, #0284c7 100%); border-radius: var(--radius-xl); padding: 3rem; text-align: center; color: #ffffff; box-shadow: var(--shadow-lg); }

/* Page Layout: wide */
/* 超宽 */
.page-main { max-width: 1400px; margin: 0 auto; width: 100%; }

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 0 6px rgba(var(--rgb-accent), 0.3); }
.card { border-left: 3px solid transparent; border-image: linear-gradient(180deg, #3b82f6, #0ea5e9) 1; }
header, .header, .navbar { background: linear-gradient(90deg, #1e293b 0%, #334155 100%); box-shadow: 0 4px 12px rgba(0,0,0,0.15), 0 2px 8px rgba(59,130,246,0.08); backdrop-filter: blur(8px); }

/* 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: 0.9rem; --space-gap: 0.7rem; }
    .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; }
}