/* CSSVariantEngine v3.0 — yuyan-zhibo.net.cn */
/* Palette: vivid cobalt | Radius: extra-rounded | Shadow: pillowy-soft */
/* Spacing: airy | Transition: floaty */
/* Section layouts: {"news":"featured-left","features":"grid-3","hero":"left-aligned","testimonials":"carousel","partners":"scroll","faq":"two-column","stats":"inline","cta":"split"} */

:root {
    --color-primary: #165DFF;
    --color-primary-dark: #0E42C2;
    --color-accent: #FF7D00;
    --color-surface: #F0F7FF;
    --color-text: #0F172A;
    --rgb-primary: 22,93,255;
    --rgb-accent: 255,125,0;
    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 22px;
    --radius-xl: 28px;
    --shadow-sm: 0 2px 8px rgba(15,23,42,0.06);
    --shadow-md: 0 8px 24px rgba(15,23,42,0.08), 0 3px 10px rgba(15,23,42,0.04);
    --shadow-lg: 0 16px 48px rgba(15,23,42,0.1), 0 6px 20px rgba(15,23,42,0.06);
    --space-section: 3.5rem;
    --space-card: 2rem;
    --space-gap: 2.25rem;
    --transition: 0.4s cubic-bezier(0.25, 1, 0.5, 1);
    --heading-weight: 700;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: var(--color-surface); }
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); background-color: var(--color-primary); color: white; border: 2px solid var(--color-primary-dark); }
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; background-color: #E8F3FF; border-left: 4px solid var(--color-primary); }

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

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }
.hero-inner { background: linear-gradient(135deg, #E8F3FF 0%, #FFF7ED 100%); border-radius: var(--radius-xl); padding: 4rem; }

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list { display: flex; overflow: hidden; } 
                .testimonial-list > * { flex: 0 0 100%; background-color: #F0FFF4; border-top: 4px solid #22C55E; }

/* partners: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 3rem; overflow: hidden; animation: partnerScroll 28s 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); }
.faq-list > div:nth-child(odd) { background-color: #FFF1F0; border-left: 3px solid #F43F5E; }
.faq-list > div:nth-child(even) { background-color: #F5F3FF; border-left: 3px solid #8B5CF6; }

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3.5rem; }
                .stats-grid > * { background: linear-gradient(180deg, #165DFF 0%, #0E42C2 100%); color: white; padding: 2rem 2.5rem; border-radius: var(--radius-xl); }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 3rem; background: linear-gradient(90deg, #FF7D00 0%, #FF9A3D 100%); color: white; padding: 3.5rem; border-radius: var(--radius-xl); }

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

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 0 12px rgba(var(--rgb-accent), 0.4); }
.card { border: 2px solid rgba(var(--rgb-primary), .25); }
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.btn:hover { background-color: var(--color-accent); border-color: #E66A00; box-shadow: 0 12px 32px rgba(var(--rgb-accent), 0.35); }

/* 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: 2.5rem; --space-card: 1.5rem; --space-gap: 1.75rem; }
    .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; }
}