/* CSSVariantEngine v3.0 — zh-zh-kuaizhibo.com.cn */
/* Palette: cool-slate-blue | Radius: compact-rounded | Shadow: multi-layer gradient */
/* Spacing: dense | Transition: smooth-long */
/* Section layouts: {"news":"grid-3","features":"grid-2","hero":"minimal","testimonials":"grid-3","partners":"grid-4","faq":"two-column","stats":"grid-4","cta":"centered"} */

:root {
    --color-primary: #3b82f6;
    --color-primary-dark: #1d4ed8;
    --color-accent: #06b6d4;
    --color-surface: #ffffff;
    --color-text: #1e293b;
    --rgb-primary: 59, 130, 246;
    --rgb-accent: 6, 182, 212;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --shadow-sm: 0 1px 3px rgba(30,41,59,0.12), 0 1px 2px rgba(var(--rgb-primary),0.08);
    --shadow-md: 0 4px 12px rgba(30,41,59,0.15), 0 2px 6px rgba(var(--rgb-primary),0.1);
    --shadow-lg: 0 8px 24px rgba(30,41,59,0.2), 0 4px 12px rgba(var(--rgb-primary),0.15);
    --space-section: 3.2rem;
    --space-card: 1.2rem;
    --space-gap: 12px;
    --transition: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --heading-weight: 600;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body { background: linear-gradient(180deg, #1e293b 0%, #334155 100%); color: #f1f5f9; line-height: var(--body-line-height); caret-color: var(--color-accent); accent-color: var(--color-primary); }
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, #f8fafc); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(90deg, var(--color-primary), var(--color-accent)); 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: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }

/* hero: minimal */
.hero { padding: 2rem 0; } .hero-content { max-width: 560px; }

/* testimonials: grid-3 */
.testimonial-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 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: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg), 0 0 18px rgba(var(--rgb-primary), 0.2); }
a:not([class]):hover { color: var(--color-primary); text-shadow: 0 0 6px rgba(var(--rgb-accent), 0.4); }
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #3b82f6 0%, #1e293b 40%, #06b6d4 100%); }
.card { border-left: 4px solid transparent; border-image: linear-gradient(180deg, var(--color-primary), var(--color-accent)) 1 stretch; }
header, .header, .navbar { box-shadow: 0 2px 10px rgba(0,0,0,0.2), 0 1px 4px rgba(var(--rgb-primary),0.1); background: rgba(30,41,59,0.85); 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: 2rem; --space-card: 0.9rem; --space-gap: 0.6rem; }
    .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; }
}