/* CSSVariantEngine v3.0 — bifenjieguo.net.cn */
/* Palette: slate-blue | Radius: compact | Shadow: layered-subtle */
/* Spacing: dense | Transition: smooth-gradient */
/* Section layouts: {"news":"grid-3","features":"centered","hero":"overlay","testimonials":"stacked","partners":"centered","faq":"two-column","stats":"grid-3","cta":"card-style"} */

:root {
    --color-primary: #3b82f6;
    --color-primary-dark: #2563eb;
    --color-accent: #93c5fd;
    --color-surface: #ffffff;
    --color-text: #1e293b;
    --rgb-primary: 59,130,246;
    --rgb-accent: 147,197,253;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --shadow-sm: 0 1px 3px 0 rgba(30, 41, 59, 0.1), 0 1px 2px -1px rgba(30, 41, 59, 0.08);
    --shadow-md: 0 4px 6px -1px rgba(30, 41, 59, 0.1), 0 2px 4px -2px rgba(30, 41, 59, 0.08), 0 0 12px rgba(59, 130, 246, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(30, 41, 59, 0.12), 0 4px 6px -4px rgba(30, 41, 59, 0.08), 0 0 20px rgba(59, 130, 246, 0.08);
    --space-section: 3.5rem;
    --space-card: 1rem;
    --space-gap: 0.875rem;
    --transition: 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
    --heading-weight: 600;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body { color: #f8fafc; background: linear-gradient(180deg, #1e293b 0%, #334155 100%); line-height: var(--body-line-height); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] { background: var(--color-surface); color: var(--color-text); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(90deg, #3b82f6, #2563eb, #1d4ed8); color: white; border: none; }
a:not([class]) { color: var(--color-accent); 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: centered */
/* 居中大卡片 */
                .feature-list { display: flex; flex-direction: column; align-items: center; gap: calc(var(--space-gap) * 2); max-width: 720px; margin: 0 auto; }

/* hero: overlay */
/* 全屏背景+文字覆盖 */
                .hero { position: relative; min-height: 70vh; display: flex; align-items: center; }
                .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: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }

/* 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: card-style */
.cta-inner { background: linear-gradient(135deg, #3b82f6 0%, #2563eb 45%, #1d4ed8 100%); border-radius: var(--radius-xl); padding: 3rem; text-align: center; 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(-2px); box-shadow: var(--shadow-lg); }
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #1e293b 0%, #334155 30%, #3b82f6 70%, #2563eb 100%); }
.card { border-left: 3px solid transparent; border-image: linear-gradient(180deg, #3b82f6, #93c5fd, #60a5fa) 1; }
header, .header, .navbar { background: rgba(255, 255, 255, 0.05); backdrop-filter: blur(12px); box-shadow: 0 2px 10px rgba(30, 41, 59, 0.15), 0 1px 3px rgba(59, 130, 246, 0.05); }

/* 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; }
}