/* CSSVariantEngine v3.0 — zh-jianada28.com.cn */
/* Palette: dense-dashboard | Radius: medium-glow | Shadow: accent-halo */
/* Spacing: compact | Transition: smooth-glow */
/* Section layouts: {"news":"grid-4","features":"centered","hero":"minimal","testimonials":"grid-3","partners":"centered","faq":"two-column","stats":"big-number","cta":"full-bg"} */

:root {
    --color-primary: #4083ee;
    --color-primary-dark: #2966df;
    --color-accent: #63a5f4;
    --color-surface: #f8fafd;
    --color-text: #1f293a;
    --rgb-primary: 64,131,238;
    --rgb-accent: 99,165,244;
    --radius-sm: 6.6px;
    --radius-md: 11px;
    --radius-lg: 15.4px;
    --radius-xl: 17.6px;
    --shadow-sm: 0 2.3px 9.2px rgba(64,131,238,0.15);
    --shadow-md: 0 4.6px 18.4px rgba(64,131,238,0.2), 0 0 27.6px rgba(64,131,238,0.3);
    --shadow-lg: 0 9.2px 27.6px rgba(64,131,238,0.4), 0 0 36.8px rgba(64,131,238,0.6);
    --space-section: 3.5rem;
    --space-card: 1rem;
    --space-gap: 0.8rem;
    --transition: 0.385s cubic-bezier(0.25, 1, 0.5, 1);
    --heading-weight: 800;
    --body-line-height: 1.7;
}

@keyframes softPulse {
    0% { box-shadow: 0 0 20.7px rgba(64,131,238,0.25); }
    50% { box-shadow: 0 0 29.9px rgba(64,131,238,0.4); }
    100% { box-shadow: 0 0 20.7px rgba(64,131,238,0.25); }
}

/* 基础覆盖 */
body { color: #e1e8f3; line-height: var(--body-line-height); background-color: #1f293a; }
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-sm); padding: var(--space-card); transition: var(--transition); background-color: #ffffff; border: 1px solid rgba(64,131,238,0.1); animation: softPulse 4s infinite ease-in-out; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background-color: var(--color-primary); color: white; border: 1px solid rgba(255,255,255,0.15); box-shadow: 0 0 13.8px rgba(64,131,238,0.3); }
a:not([class]) { color: var(--color-accent); transition: var(--transition); text-shadow: 0 0 2.3px rgba(64,131,238,0.4); }

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

/* news: grid-4 */
/* 四列紧凑网格 */
                .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 0.8); }

/* 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: 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: 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: big-number */
/* 大数字居中 */
                .stats-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }
                .stats-grid .stat-value { font-size: 3rem; color: var(--color-accent); text-shadow: 0 0 18.4px rgba(64,131,238,0.6); }

/* cta: full-bg */
.cta-section { background: linear-gradient(135deg, #4083ee 0%, #2153c7 100%); color: #ffffff; padding: 4rem 2rem; box-shadow: 0 0 46px rgba(64,131,238,0.5); }

/* 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(-4px); box-shadow: var(--shadow-lg); border-color: rgba(64,131,238,0.4); }
header, .header, .navbar { background: rgba(31,41,58,0.85); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(64,131,238,0.2); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { box-shadow: 0 0 36.8px rgba(64,131,238,0.7); background-color: var(--color-accent); }
a:not([class]):hover { color: #95c5fa; text-shadow: 0 0 9.2px rgba(64,131,238,0.8); }

/* 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; }
}