/* CSSVariantEngine v3.0 — ui-zuijiaqiuhui.com.cn */
/* Palette: sidebar-classic gradient | Radius: soft rounded | Shadow: multi-layer gradient tinted */
/* Spacing: comfortable | Transition: smooth long */
/* Section layouts: {"news":"featured-left","features":"grid-2","hero":"overlay","testimonials":"masonry","partners":"centered","faq":"with-sidebar","stats":"grid-4","cta":"centered"} */

:root {
    --color-primary: #16a34a;
    --color-primary-dark: #15803d;
    --color-accent: #86efac;
    --color-surface: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    --color-text: #0f172a;
    --rgb-primary: 22,163,74;
    --rgb-accent: 134,239,172;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --shadow-sm: 0 1px 3px rgba(22,163,74,0.07), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(22,163,74,0.1), 0 2px 6px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 25px rgba(22,163,74,0.15), 0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.05);
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;
    --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, #f1f5f9 0%, #cbd5e1 100%);
    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: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
}
.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: var(--transition);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border: 2px solid transparent;
    border-image: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 100%) 1;
}
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: 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: linear-gradient(120deg, #252e3a 0%, #334155 40%, rgba(37,46,58,0.85) 100%);
}
.hero-content { position: relative; z-index: 1; }

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
.testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
.faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }
.faq-wrapper > *:last-child {
    background: linear-gradient(180deg, #252e3a 0%, #1e293b 100%);
    color: #f1f5f9;
    border-radius: var(--radius-xl);
    padding: 2rem;
}

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }
.stats-grid > * {
    background: linear-gradient(180deg, #ffffff 0%, #f1f5f9 100%);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }
.cta-inner {
    background: linear-gradient(135deg, #252e3a 0%, #334155 50%, #252e3a 100%);
    padding: 3rem;
    border-radius: var(--radius-xl);
    color: white;
}

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { 
    transform: translateY(-4px); 
    box-shadow: var(--shadow-lg); 
    background: linear-gradient(145deg, #ffffff 0%, #f0fdf4 100%);
}
.card { 
    border-left: 4px solid;
    border-image: linear-gradient(180deg, var(--color-primary) 0%, var(--color-accent) 100%) 1;
}
header, .header, .navbar { 
    box-shadow: 0 4px 16px rgba(37,46,58,0.25), 0 2px 6px rgba(0,0,0,0.12);
    background: linear-gradient(90deg, #252e3a 0%, #334155 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; }
}