/* CSSVariantEngine v3.0 — as-ng28.com.cn */
/* Palette: gradient-pastel | Radius: rounded | Shadow: soft multi-layer */
/* Spacing: airy | Transition: smooth long */
/* Section layouts: {"news":"grid-3","features":"grid-2","hero":"overlay","testimonials":"stacked","partners":"scroll","faq":"two-column","stats":"grid-3","cta":"full-bg"} */

:root {
    --color-primary: #7C3AED;
    --color-primary-dark: #5B21B6;
    --color-accent: #F472B6;
    --color-surface: #F9FAFB;
    --color-text: #1E1B4B;
    --rgb-primary: 124,58,237;
    --rgb-accent: 244,114,182;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 12px rgba(var(--rgb-primary),0.08), 0 1px 4px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 20px rgba(var(--rgb-primary),0.1), 0 2px 8px rgba(0,0,0,0.06);
    --shadow-lg: 0 8px 40px rgba(var(--rgb-primary),0.12), 0 4px 16px rgba(0,0,0,0.08);
    --space-section: 3.2rem;
    --space-card: 1.4rem;
    --space-gap: 1.25rem;
    --transition: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --heading-weight: 700;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body { 
    color: var(--color-text); 
    line-height: var(--body-line-height); 
    background: linear-gradient(180deg, #F3F4F6 0%, #F9FAFB 100%);
    caret-color: var(--color-primary);
    accent-color: var(--color-primary);
}
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 1px 2px rgba(var(--rgb-primary),0.05); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] { 
    border-radius: var(--radius-lg); 
    background: linear-gradient(180deg, #FFFFFF 0%, #FEFCFF 100%);
    border-top: 4px solid transparent;
    border-image: linear-gradient(90deg, #7C3AED, #EC4899, #F59E0B) 1;
    box-shadow: var(--shadow-md); 
    padding: var(--space-card); 
    transition: var(--transition); 
}
.card, [class*="card"]:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}
.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    background: linear-gradient(135deg, #7C3AED 0%, #EC4899 100%);
    color: white;
    border: none;
    box-shadow: var(--shadow-sm);
    transition: var(--transition); 
}
.btn, button[class*="btn"], a[class*="btn"]:hover {
    box-shadow: var(--shadow-md);
    filter: brightness(1.05);
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

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

/* news: grid-3 */
/* 三列等宽网格 */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

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

/* hero: overlay */
/* 全屏背景+文字覆盖 */
.hero { position: relative; min-height: 70vh; display: flex; align-items: center; background: radial-gradient(circle at top right, rgba(124,58,237,0.1) 0%, transparent 60%), radial-gradient(circle at bottom left, rgba(244,114,182,0.1) 0%, transparent 60%); }
.hero-content { position: relative; z-index: 1; }

/* testimonials: stacked */
/* 垂直堆叠 */
.testimonial-list { display: flex; flex-direction: column; gap: var(--space-gap); max-width: 720px; margin: 0 auto; }

/* partners: scroll */
/* 自动滚动 */
.partner-grid { display: flex; gap: 2rem; 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); }

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: full-bg */
.cta-section { 
    background: linear-gradient(135deg, #7C3AED 0%, #EC4899 50%, #F59E0B 100%); 
    color: #fff; 
    padding: 4rem 2rem; 
    box-shadow: 0 -4px 24px rgba(var(--rgb-primary),0.15);
}

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

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 0 4px rgba(var(--rgb-accent),0.2); }
header, .header, .navbar { background: transparent; 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: 2.2rem; --space-card: 1.1rem; --space-gap: 0.9rem; }
    .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; }
}