/* CSSVariantEngine v3.0 — leshengdianjing.org.cn */
/* Palette: sidebar-classic | Radius: soft rounded | Shadow: multi-layer gradient tinted */
/* Spacing: balanced | Transition: smooth long cubic */
/* Section layouts: {"news":"list-view","features":"grid-3","hero":"centered","testimonials":"masonry","partners":"scroll","faq":"with-sidebar","stats":"grid-4","cta":"centered"} */

:root {
    --color-primary: #2d7dff;
    --color-primary-dark: #252e3a;
    --color-accent: #36d1dc;
    --color-surface: linear-gradient(135deg, #f0f4f8 0%, #e6eff9 50%, #f8fafc 100%);
    --color-text: #1e293b;
    --rgb-primary: 45, 125, 255;
    --rgb-accent: 54, 209, 220;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 22px;
    --shadow-sm: 0 2px 8px rgba(37, 46, 58, 0.08), 0 1px 3px rgba(45, 125, 255, 0.05);
    --shadow-md: 0 6px 20px rgba(37, 46, 58, 0.12), 0 3px 10px rgba(45, 125, 255, 0.08);
    --shadow-lg: 0 12px 40px rgba(37, 46, 58, 0.18), 0 6px 20px rgba(54, 209, 220, 0.1);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.55s cubic-bezier(0.25, 0.1, 0.25, 1);
    --heading-weight: 600;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body { 
    background: var(--color-surface);
    color: var(--color-text); 
    line-height: var(--body-line-height); 
}
h1, h2, h3, h4 { 
    font-weight: var(--heading-weight); 
    background: linear-gradient(90deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
section, .section { 
    padding-top: var(--space-section); 
    padding-bottom: var(--space-section); 
}
.card, [class*="card"] { 
    background: linear-gradient(145deg, #ffffff 0%, #f8fbff 100%);
    border-radius: var(--radius-lg); 
    box-shadow: var(--shadow-md); 
    padding: var(--space-card); 
    transition: var(--transition); 
}
.btn, button[class*="btn"], a[class*="btn"] { 
    background: linear-gradient(90deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-accent) 100%);
    color: white;
    border-radius: var(--radius-md); 
    transition: var(--transition); 
}
a:not([class]) { 
    color: var(--color-primary); 
    transition: var(--transition); 
}

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

/* news: list-view */
/* 列表模式 (图左文右) */
                .news-grid { display: flex; flex-direction: column; gap: var(--space-gap); }
                .news-grid .card { display: grid; grid-template-columns: 280px 1fr; }

/* features: grid-3 */
.feature-list { display: grid; grid-template-columns: repeat(3, 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: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 24s linear infinite; }
                @keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }
                .faq-wrapper > *:last-child {
                    background: linear-gradient(180deg, var(--color-primary-dark) 0%, #1a2029 100%);
                    color: #f1f5f9;
                    border-radius: var(--radius-lg);
                    box-shadow: var(--shadow-lg);
                }

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }
.stats-grid .card {
    background: linear-gradient(180deg, #ffffff 0%, #eff6ff 100%);
    border-bottom: 3px solid transparent;
    border-image: linear-gradient(90deg, var(--color-primary), var(--color-accent)) 1;
}

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }
.cta-inner {
    background: linear-gradient(135deg, rgba(var(--rgb-primary), 0.08) 0%, rgba(var(--rgb-accent), 0.08) 100%);
    padding: 3rem 2rem;
    border-radius: var(--radius-xl);
}

/* 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-accent); }
.card { 
    border-left: 3px solid transparent; 
    border-image: linear-gradient(180deg, var(--color-primary), var(--color-accent)) 1; 
}
.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* 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; }
}