/* CSSVariantEngine v3.0 — zh-kaiyuanqipai.gd.cn */
/* Palette: pinterest-gradient | Radius: soft-rounded | Shadow: layered-soft */
/* Spacing: comfortable | Transition: smooth-long */
/* Section layouts: {"news":"grid-3","features":"grid-4","hero":"left-aligned","testimonials":"carousel","partners":"grid-4","faq":"single-column","stats":"inline","cta":"full-bg"} */

:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-accent: #ec4899;
    --color-surface: #f8fafc;
    --color-text: #1e293b;
    --rgb-primary: 37,99,235;
    --rgb-accent: 236,72,153;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 2px 6px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.08);
    --shadow-md: 0 8px 20px rgba(0,0,0,0.07), 0 3px 8px rgba(0,0,0,0.05);
    --shadow-lg: 0 18px 42px rgba(0,0,0,0.09), 0 8px 20px rgba(0,0,0,0.06);
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;
    --transition: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --heading-weight: 800;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { 
    color: var(--color-text); 
    line-height: var(--body-line-height);
    background-color: #f1f5f9;
    background-image: radial-gradient(circle at 10% 0%, rgba(99, 102, 241, 0.08) 0%, transparent 45%),
                      radial-gradient(circle at 90% 100%, rgba(236, 72, 153, 0.06) 0%, transparent 50%);
}
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;
    border: 1px solid transparent;
    border-image: linear-gradient(135deg, #e0e7ff 0%, #fbcfe8 100%) 1;
}
.card:hover, [class*="card"]:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}
.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: var(--transition);
    background-image: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: white;
    border: none;
}
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-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }

/* testimonials: carousel */
/* 单条轮播 */
.testimonial-list { display: flex; overflow: hidden; } 
.testimonial-list > * { flex: 0 0 100%; }

/* 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: inline */
/* 水平排列 */
.stats-grid { display: flex; justify-content: center; gap: 3rem; }

/* cta: full-bg */
.cta-section { 
    background: linear-gradient(135deg, #2563eb 0%, #8b5cf6 50%, #ec4899 100%); 
    color: #fff; 
    padding: 4rem 2rem; 
    box-shadow: 0 -10px 40px rgba(37,99,235,0.15);
}

/* 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 2px rgba(var(--rgb-accent), 0.2); }
.hero, [class*="hero"], section:first-of-type { 
    background: linear-gradient(135deg, #2563eb 0%, #7c3aed 40%, #ec4899 75%, #f59e0b 100%); 
}

/* 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: 1rem; --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; }
}