/* CSSVariantEngine v3.0 — jiuyouhui.sx.cn */
/* Palette: violet-amber gradient | Radius: soft rounded | Shadow: multi-layer harmonious */
/* Spacing: symmetric 24px gap | Transition: smooth long cubic */
/* Section layouts: {"news":"featured-top","features":"centered","hero":"left-aligned","testimonials":"carousel","partners":"grid-6","faq":"single-column","stats":"grid-4","cta":"split"} */

:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #5b21b6;
    --color-accent: #f59e0b;
    --color-surface: #fdf4ff;
    --color-text: #1e1b4b;
    --rgb-primary: 124,58,237;
    --rgb-accent: 245,158,11;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 8px rgba(124,58,237,.08), 0 1px 2px rgba(245,158,11,.05);
    --shadow-md: 0 10px 24px rgba(124,58,237,.12), 0 4px 8px rgba(245,158,11,.06);
    --shadow-lg: 0 24px 48px rgba(124,58,237,.15), 0 8px 16px rgba(245,158,11,.08);
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.5rem;
    --transition: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --heading-weight: 700;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { 
    color: var(--color-text); 
    line-height: var(--body-line-height);
    background: linear-gradient(135deg, #fdf4ff 0%, #fef3c7 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, #ffffff 0%, #faf5ff 100%);
}
.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: var(--transition);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: white;
    border: none;
}
.btn:hover {
    filter: brightness(1.08);
    box-shadow: 0 6px 20px rgba(var(--rgb-primary), 0.25);
}
a:not([class]) { 
    color: var(--color-primary); 
    transition: var(--transition);
    background: linear-gradient(transparent 90%, rgba(var(--rgb-accent), 0.3) 100%);
}
a:not([class]):hover {
    background: linear-gradient(transparent 85%, rgba(var(--rgb-accent), 0.6) 100%);
}

/* ========== 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: centered */
/* 居中大卡片 */
.feature-list { display: flex; flex-direction: column; align-items: center; gap: calc(var(--space-gap) * 2); max-width: 720px; margin: 0 auto; }

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }
.hero-inner {
    background: linear-gradient(90deg, rgba(124,58,237,0.08) 0%, rgba(245,158,11,0.08) 100%);
    border-radius: var(--radius-xl);
    padding: 2rem;
}

/* 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; }
.partner-grid > * {
    background: linear-gradient(145deg, #ffffff 0%, #fefefe 100%);
    border-radius: var(--radius-md);
    padding: 1rem;
    transition: var(--transition);
}
.partner-grid > *:hover {
    transform: scale(1.05);
}

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-list > * {
    border-radius: var(--radius-md);
    background: linear-gradient(180deg, #ffffff 0%, #fdf4ff 100%);
    margin-bottom: 1rem;
    padding: 1.25rem;
    transition: var(--transition);
}

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }
.stats-grid > * {
    background: linear-gradient(180deg, rgba(124,58,237,0.05) 0%, rgba(245,158,11,0.05) 100%);
    border-radius: var(--radius-lg);
    padding: 1.5rem 1rem;
    backdrop-filter: blur(4px);
}

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }
.cta-inner {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-accent) 100%);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    color: white;
}

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
.page-main { max-width: 1200px; margin: 0 auto; }

/* 条件性装饰 */
.card { 
    border-left: 4px solid;
    border-image: linear-gradient(180deg, var(--color-primary), var(--color-accent)) 1 stretch;
}
header, .header, .navbar { 
    background: linear-gradient(180deg, rgba(255,255,255,0.9) 0%, rgba(253,244,255,0.85) 100%);
    backdrop-filter: blur(12px);
}

/* 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; }
}