/* CSSVariantEngine v3.0 — go-dianjingshijiebei-qq.com.cn */
/* Palette: indigo-teal | Radius: symmetric | Shadow: multi-layer harmonious */
/* Spacing: uniform 24px | Transition: smooth gradient-rich */
/* Section layouts: {"news":"grid-4","features":"grid-2","hero":"centered","testimonials":"masonry","partners":"grid-4","faq":"with-sidebar","stats":"grid-4","cta":"card-style"} */

:root {
    --color-primary: #4338ca;
    --color-primary-dark: #312e81;
    --color-accent: #2dd4bf;
    --color-surface: #f0f9ff;
    --color-text: #1e1b4b;
    --rgb-primary: 67, 56, 202;
    --rgb-accent: 45, 212, 191;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 2px 4px rgba(67, 56, 202, 0.05), 0 1px 2px rgba(45, 212, 191, 0.08);
    --shadow-md: 0 8px 16px rgba(67, 56, 202, 0.08), 0 4px 8px rgba(45, 212, 191, 0.06);
    --shadow-lg: 0 16px 32px rgba(67, 56, 202, 0.1), 0 8px 16px rgba(45, 212, 191, 0.07);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 24px;
    --transition: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --heading-weight: 700;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body { 
    color: var(--color-text); 
    line-height: var(--body-line-height); 
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}
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(180deg, #ffffff 0%, #f8fafc 100%);
    border: 2px solid transparent;
    border-image: linear-gradient(135deg, #a5b4fc 0%, #99f6e4 100%) 1;
}
.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-accent) 100%);
    color: white;
    border: none;
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

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

/* news: grid-4 */
/* 四列紧凑网格 */
.news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }

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

/* hero: centered */
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }

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

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); align-items: center; }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
.faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: var(--space-gap); }

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: card-style */
.cta-inner { 
    background: linear-gradient(135deg, #4f46e5 0%, #0d9488 100%); 
    border-radius: var(--radius-xl); 
    padding: 3rem; 
    text-align: center; 
    color: white;
    box-shadow: var(--shadow-lg);
}

/* 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-primary-dark); text-shadow: 0 0 2px rgba(var(--rgb-primary), 0.1); }
.card { border: 2px solid rgba(var(--rgb-primary), .1); }
header, .header, .navbar { 
    box-shadow: 0 4px 12px rgba(67, 56, 202, 0.07), 0 2px 6px rgba(45, 212, 191, 0.05); 
    background: linear-gradient(180deg, #ffffff 0%, #f0f9ff 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: 24px; }
    .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; }
}