/* CSSVariantEngine v3.0 — zh-kanqiuba.org.cn */
/* Palette: vibrant gradient | Radius: mosaic-rounded | Shadow: multi-layer elevation */
/* Spacing: comfortable | Transition: smooth-long */
/* Section layouts: {"news":"grid-3","features":"grid-4","hero":"centered","testimonials":"grid-3","partners":"centered","faq":"single-column","stats":"grid-3","cta":"split"} */

:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #4f46e5;
    --color-accent: #f97316;
    --color-surface: #f8fafc;
    --color-text: #1e293b;
    --rgb-primary: 124, 58, 237;
    --rgb-accent: 249, 115, 22;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 22px;
    --radius-xl: 32px;
    --shadow-sm: 0 2px 8px rgba(124, 58, 237, 0.12), 0 1px 3px rgba(79, 70, 229, 0.08);
    --shadow-md: 0 8px 24px rgba(124, 58, 237, 0.18), 0 3px 10px rgba(249, 115, 22, 0.1);
    --shadow-lg: 0 16px 48px rgba(124, 58, 237, 0.25), 0 6px 20px rgba(79, 70, 229, 0.15);
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.75rem;
    --transition: 0.55s cubic-bezier(0.25, 0.8, 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, #f8fafc 0%, #f1f5f9 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: radial-gradient(circle at top left, rgba(124, 58, 237, 0.06), rgba(255, 255, 255, 0.96)); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, #7c3aed, #f97316, #ec4899); color: white; border: none; }
a:not([class]) { color: var(--color-primary); 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-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }

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

/* 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: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }

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

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 0 8px rgba(249, 115, 22, 0.3); }
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #7c3aed 0%, #ec4899 45%, #f97316 100%); }
.card { border: 2px solid transparent; border-image: linear-gradient(135deg, rgba(124, 58, 237, 0.3), rgba(249, 115, 22, 0.3), rgba(236, 72, 153, 0.3)) 1; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.btn:hover { filter: brightness(1.1); transform: scale(1.03); }

/* 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; }
}