/* CSSVariantEngine v3.0 — zh-jiuyouapp.gd.cn */
/* Palette: spotlight-purple-gold | Radius: airy-large | Shadow: pillowy-soft */
/* Spacing: generous-breathing | Transition: smooth-flow */
/* Section layouts: {"news":"featured-left","features":"centered","hero":"minimal","testimonials":"stacked","partners":"grid-4","faq":"single-column","stats":"big-number","cta":"split"} */

:root {
    --color-primary: #7e22ce;
    --color-primary-dark: #1e1b4b;
    --color-accent: #f59e0b;
    --color-surface: #fffdf7;
    --color-text: #1e1b4b;
    --rgb-primary: 126, 34, 206;
    --rgb-accent: 245, 158, 11;
    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 24px;
    --radius-xl: 28px;
    --shadow-sm: 0 4px 12px rgba(126, 34, 206, 0.08), 0 1px 3px rgba(245, 158, 11, 0.06);
    --shadow-md: 0 12px 28px rgba(126, 34, 206, 0.12), 0 6px 16px rgba(245, 158, 11, 0.07);
    --shadow-lg: 0 24px 60px rgba(126, 34, 206, 0.18), 0 12px 32px rgba(245, 158, 11, 0.1);
    --space-section: 5rem;
    --space-card: 2.5rem;
    --space-gap: 2.25rem;
    --transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --heading-weight: 600;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body { 
    color: var(--color-text); 
    line-height: var(--body-line-height); 
    background: linear-gradient(180deg, #0f0f1a 0%, #1a1a2e 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: var(--color-surface);
}
.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: var(--transition); 
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: white;
    box-shadow: var(--shadow-sm);
}
a:not([class]) { color: var(--color-accent); transition: var(--transition); }

/* ========== 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: 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: minimal */
.hero { padding: 2rem 0; } .hero-content { max-width: 560px; }

/* testimonials: stacked */
/* 垂直堆叠 */
.testimonial-list { display: flex; flex-direction: column; gap: var(--space-gap); max-width: 720px; margin: 0 auto; }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }

/* 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; color: var(--color-accent); text-shadow: 0 2px 8px rgba(245, 158, 11, 0.25); }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; background: var(--color-surface); border-radius: var(--radius-xl); padding: 3rem; box-shadow: var(--shadow-lg); }

/* Page Layout: narrow-centered */
/* 窄版居中 */
.page-main { max-width: 860px; margin: 0 auto; background: var(--color-surface); border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); padding: 2rem; }

/* 条件性装饰 */
.card { border: 1px solid rgba(var(--rgb-accent), 0.12); }
header, .header, .navbar { 
    background: rgba(15, 15, 26, 0.75); 
    backdrop-filter: blur(12px); 
    border-bottom: 1px solid rgba(var(--rgb-accent), 0.08);
}

/* 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: 3rem; --space-card: 1.75rem; --space-gap: 1.5rem; }
    .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; }
}