/* CSSVariantEngine v3.0 — sv-jinnianhui.com.cn */
/* Palette: spotlight-stage | Radius: soft-pill | Shadow: dual-gradient | Spacing: spacious-centered */
/* Transition: smooth-long | Section layouts: {"news":"featured-top","features":"grid-2","hero":"overlay","testimonials":"carousel","partners":"grid-6","faq":"two-column","stats":"grid-3","cta":"card-style"} */

:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #0f0f1a;
    --color-accent: #fbbf24;
    --color-surface: linear-gradient(145deg, #fffaf5 0%, #fff3e0 60%, #ffe8cc 100%);
    --color-text: #12121f;
    --rgb-primary: 124, 58, 237;
    --rgb-accent: 251, 191, 36;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 36px;
    --shadow-sm: 0 3px 12px rgba(var(--rgb-primary), 0.18), 0 1px 4px rgba(var(--rgb-accent), 0.1);
    --shadow-md: 0 8px 28px rgba(var(--rgb-primary), 0.2), 0 3px 10px rgba(var(--rgb-accent), 0.12);
    --shadow-lg: 0 16px 56px rgba(var(--rgb-primary), 0.24), 0 6px 20px rgba(var(--rgb-accent), 0.15);
    --space-section: 4.5rem;
    --space-card: 1.2rem;
    --space-gap: 0.9rem;
    --transition: 0.55s cubic-bezier(0.25, 0.1, 0.25, 1);
    --heading-weight: 800;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { 
    background: linear-gradient(180deg, var(--color-primary-dark) 0%, #171732 100%);
    color: var(--color-text); 
    line-height: var(--body-line-height); 
}
h1, h2, h3, h4 { 
    font-weight: var(--heading-weight); 
    text-align: center;
}
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: var(--color-surface);
    border: 2px solid transparent;
    border-image: linear-gradient(135deg, var(--color-primary), var(--color-accent)) 1;
}
.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: var(--transition); 
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: white;
    border: none;
}
a:not([class]) { 
    color: var(--color-primary); 
    transition: var(--transition); 
}

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

/* news: featured-top */
/* 首篇横跨全宽 */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
.news-grid > *:first-child { grid-column: span 3; }

/* features: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); justify-content: center; }

/* hero: overlay */
/* 全屏背景+文字覆盖 */
.hero { 
    position: relative; 
    min-height: 70vh; 
    display: flex; 
    align-items: center; 
    justify-content: center;
    background: radial-gradient(circle at center, #2a2a55 0%, var(--color-primary-dark) 70%);
}
.hero-content { position: relative; z-index: 1; text-align: center; max-width: 900px; margin: 0 auto; }

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

/* partners: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center; }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }

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

/* cta: card-style */
.cta-inner { 
    background: linear-gradient(135deg, var(--color-primary) 0%, #a855f7 50%, var(--color-accent) 100%); 
    border-radius: var(--radius-xl); 
    padding: 3rem; 
    text-align: center; 
    color: white;
    box-shadow: var(--shadow-lg);
}

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
.page-main { max-width: 920px; margin: 0 auto; background: var(--color-surface); border-radius: var(--radius-xl); }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { 
    transform: translateY(-6px); 
    box-shadow: var(--shadow-lg); 
    filter: brightness(1.03);
}
a:not([class]):hover { 
    color: var(--color-accent); 
    text-shadow: 0 0 8px rgba(var(--rgb-accent), 0.3);
}

/* 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: 2.5rem; --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; }
}