/* CSSVariantEngine v3.0 — zh-jiuyouentertainment.com.cn */
/* Palette: balanced gradient | Radius: soft rounded | Shadow: multi-layer depth */
/* Spacing: uniform 24px | Transition: 0.5s smooth cubic */
/* Section layouts: {"news":"featured-left","features":"grid-3","hero":"left-aligned","testimonials":"grid-3","partners":"centered","faq":"single-column","stats":"big-number","cta":"centered"} */

:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-accent: #06b6d4;
    --color-surface: #f0f9ff;
    --color-text: #0f172a;
    --rgb-primary: 37, 99, 235;
    --rgb-accent: 6, 182, 212;
    --radius-sm: 6px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-xl: 30px;
    --shadow-sm: 0 2px 8px rgba(37, 99, 235, 0.12);
    --shadow-md: 0 6px 20px rgba(37, 99, 235, 0.18), 0 2px 6px rgba(6, 182, 212, 0.08);
    --shadow-lg: 0 12px 40px rgba(37, 99, 235, 0.22), 0 4px 12px rgba(6, 182, 212, 0.12);
    --space-section: 2.25rem;
    --space-card: 1.25rem;
    --space-gap: 1.5rem;
    --transition: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --heading-weight: 700;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body { 
    color: var(--color-text); 
    line-height: var(--body-line-height);
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 50%, #f0fdfa 100%);
    min-height: 100vh;
}
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: linear-gradient(180deg, #ffffff 0%, #f8fafc 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(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: white;
    border: none;
}
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover {
    background: linear-gradient(90deg, var(--color-primary-dark) 0%, #0891b2 100%);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
}
a:not([class]) { 
    color: var(--color-primary); 
    transition: var(--transition);
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
}

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

/* news: featured-left */
/* 左大右小 (1大+2小) */
.news-grid { display: grid; grid-template-columns: 2fr 1fr; grid-template-rows: auto auto; gap: var(--space-gap); }
.news-grid > *:first-child { grid-row: span 2; }

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

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }
.hero-content h1 {
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }

/* stats: big-number */
/* 大数字居中 */
.stats-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }
.stats-grid .stat-value { 
    font-size: 3rem;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* cta: centered */
.cta-inner { 
    text-align: center; 
    max-width: 700px; 
    margin: 0 auto;
    padding: 3rem;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(37,99,235,0.1) 0%, rgba(6,182,212,0.1) 100%);
    border: 2px solid transparent;
    border-image: linear-gradient(135deg, var(--color-primary), var(--color-accent)) 1 stretch;
}

/* Page Layout: wide */
/* 超宽 */
.page-main { max-width: 1400px; margin: 0 auto; }

/* 条件性装饰 */
a:not([class]):hover { 
    color: var(--color-accent); 
    text-underline-offset: 5px;
}
.card { 
    border: 2px solid transparent;
    border-image: linear-gradient(135deg, rgba(37,99,235,0.2), rgba(6,182,212,0.2)) 1 stretch;
}

/* 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: 1.25rem; }
    .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; }
}