/* CSSVariantEngine v3.0 — go-857tiyu.com.cn */
/* Palette: vivid gradient | Radius: playful rounded | Shadow: multi-layer colored */
/* Spacing: mixed tight/loose | Transition: smooth long */
/* Section layouts: {"news":"list-view","features":"horizontal","hero":"split","testimonials":"carousel","partners":"scroll","faq":"single-column","stats":"grid-3","cta":"centered"} */

:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #4c1d95;
    --color-accent: #ec4899;
    --color-surface: linear-gradient(135deg, #fdf4ff 0%, #f0f9ff 50%, #fff1f2 100%);
    --color-text: #1e1b4b;
    --rgb-primary: 124, 58, 237;
    --rgb-accent: 236, 72, 153;
    --radius-sm: 6px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-xl: 32px;
    --shadow-sm: 0 1px 3px rgba(124,58,237,0.12), 0 2px 6px rgba(6,182,212,0.08);
    --shadow-md: 0 6px 16px rgba(124,58,237,0.18), 0 12px 24px rgba(6,182,212,0.1);
    --shadow-lg: 0 12px 32px rgba(124,58,237,0.25), 0 20px 60px rgba(6,182,212,0.15), 0 2px 8px rgba(236,72,153,0.07);
    --space-section: 3.25rem;
    --space-card: 1.5rem;
    --space-gap: 0.875rem;
    --transition: 0.5s cubic-bezier(0.25, 1, 0.5, 1);
    --heading-weight: 800;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body { 
    color: var(--color-text); 
    line-height: var(--body-line-height); 
    background: var(--color-surface);
}
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section, .section { 
    padding-top: var(--space-section); 
    padding-bottom: var(--space-section); 
    background: linear-gradient(180deg, rgba(124,58,237,0.04) 0%, transparent 60%);
}
.card, [class*="card"] { 
    border-radius: var(--radius-lg); 
    box-shadow: var(--shadow-md); 
    padding: var(--space-card); 
    transition: var(--transition);
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border: 3px solid transparent;
    border-image: linear-gradient(45deg, #7c3aed, #ec4899, #06b6d4) 1;
}
.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: var(--transition);
    background: linear-gradient(90deg, #7c3aed 0%, #ec4899 100%);
    color: white;
    border: 0;
}
a:not([class]) { 
    color: var(--color-primary); 
    transition: var(--transition);
    background: linear-gradient(to bottom, transparent 60%, rgba(236,72,153,0.3) 100%);
}

/* ========== 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: horizontal */
/* 水平滚动 */
                .feature-list { display: flex; gap: var(--space-gap); overflow-x: auto; scroll-snap-type: x mandatory; }
                .feature-list > * { flex: 0 0 300px; scroll-snap-align: start; }

/* hero: split */
/* 左文右图 */
                .hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center; }

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list { display: flex; overflow: hidden; } 
                .testimonial-list > * { flex: 0 0 100%; }

/* 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: 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: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }

/* Page Layout: narrow-centered */
/* 窄版居中 */
            .page-main { max-width: 860px; margin: 0 auto; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { 
    transform: translateY(-4px); 
    box-shadow: var(--shadow-lg); 
    background: linear-gradient(135deg, #fff7ff 0%, #f0f9ff 100%);
}
.card { 
    border-left: 3px solid; 
    border-image: linear-gradient(to bottom, #7c3aed, #ec4899) 1; 
}
header, .header, .navbar { 
    box-shadow: 0 4px 12px rgba(124,58,237,0.08), 0 2px 4px rgba(6,182,212,0.05); 
    background: linear-gradient(to right, #ffffff, #faf5ff);
}

/* 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; }
}