/* CSSVariantEngine v3.0 — lvshudianjing.cn */
/* Palette: gradient-rich asymmetric blocks | Radius: asymmetric mixed | Shadow: multi-layer vibrant */
/* Spacing: mixed tight-loose | Transition: 0.5s long cubic-bezier */
/* Section layouts: {"news":"grid-4","features":"grid-3","hero":"overlay","testimonials":"carousel","partners":"grid-6","faq":"single-column","stats":"grid-3","cta":"centered"} */

:root {
    --color-primary: #9333ea;
    --color-primary-dark: #4c1d95;
    --color-accent: #ec4899;
    --color-surface: linear-gradient(135deg, #fdf4ff 0%, #f0f9ff 50%, #fef3c7 100%);
    --color-text: #1e1b4b;
    --rgb-primary: 147, 51, 234;
    --rgb-accent: 236, 72, 153;
    --radius-sm: 2px 10px;
    --radius-md: 18px 4px;
    --radius-lg: 4px 22px;
    --radius-xl: 30px 6px;
    --shadow-sm: 2px 2px 0 #facc15, 0 1px 3px rgba(79,70,229,0.12);
    --shadow-md: 4px 6px 12px rgba(99,102,241,0.25), -2px -2px 0 #a78bfa;
    --shadow-lg: 6px 10px 24px rgba(236,72,153,0.3), 10px 12px 0 rgba(250,204,21,0.4);
    --space-section: 2.2rem;
    --space-card: 1.2rem;
    --space-gap: 0.9rem;
    --transition: 0.5s cubic-bezier(0.25, 1, 0.5, 1);
    --heading-weight: 700;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body { 
    color: var(--color-text); 
    line-height: var(--body-line-height);
    background: linear-gradient(135deg, #f8fafc 0%, #fdf4ff 45%, #fef3c7 100%);
    caret-color: var(--color-primary);
    accent-color: var(--color-accent);
}
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, transparent 0%, rgba(167,139,250,0.05) 100%);
}
.card, [class*="card"] { 
    border-radius: var(--radius-lg); 
    box-shadow: var(--shadow-md); 
    padding: var(--space-card); 
    transition: var(--transition);
    background: linear-gradient(180deg, #ffffff 0%, #f5f3ff 100%);
    border: 2px solid;
    border-image: linear-gradient(90deg, #9333ea, #ec4899, #facc15) 1;
}
.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: var(--transition);
    background: linear-gradient(135deg, #9333ea 0%, #ec4899 100%);
    color: white;
    border: none;
    box-shadow: var(--shadow-sm);
}
a:not([class]) { 
    color: var(--color-primary); 
    transition: var(--transition);
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
}

/* ========== 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: grid-3 */
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* hero: overlay */
/* 全屏背景+文字覆盖 */
.hero { 
    position: relative; 
    min-height: 70vh; 
    display: flex; 
    align-items: center;
    background: radial-gradient(circle at 20% 20%, rgba(167,139,250,0.35) 0%, transparent 55%),
                radial-gradient(circle at 80% 80%, rgba(236,72,153,0.25) 0%, transparent 65%),
                radial-gradient(circle at 50% 50%, rgba(250,204,21,0.15) 0%, transparent 70%);
}
.hero-content { position: relative; z-index: 1; }

/* 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: 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;
    background: linear-gradient(135deg, rgba(147,51,234,0.1) 0%, rgba(236,72,153,0.1) 100%);
    border-radius: var(--radius-xl);
    padding: 2.5rem 1.5rem;
}

/* 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(-6px); 
    box-shadow: var(--shadow-lg);
    filter: saturate(1.15);
}
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 0 8px rgba(236,72,153,0.3); }
.card { border: 2px solid rgba(var(--rgb-primary), .12); }
header, .header, .navbar { 
    box-shadow: 0 4px 16px rgba(79,70,229,0.18); 
    backdrop-filter: blur(10px);
    background: linear-gradient(180deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.7) 100%);
}

/* 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; }
}