/* CSSVariantEngine v3.0 — int-500caipiao.com.cn */
/* Palette: deep blue | Radius: sharp | Shadow: hard offset */
/* Spacing: symmetric uniform | Transition: snappy */
/* Section layouts: {"news":"masonry-2","features":"centered","hero":"left-aligned","testimonials":"carousel","partners":"scroll","faq":"two-column","stats":"inline","cta":"centered"} */

:root {
    --color-primary: #1e40af;
    --color-primary-dark: #1e3a8a;
    --color-accent: #0ea5e9;
    --color-surface: #f0f9ff;
    --color-text: #0c1929;
    --rgb-primary: 30, 64, 175;
    --rgb-accent: 14, 165, 233;
    --radius-sm: 2px;
    --radius-md: 3px;
    --radius-lg: 4px;
    --radius-xl: 4px;
    --shadow-sm: 3px 3px 0px rgba(var(--rgb-primary), 0.25);
    --shadow-md: 4px 4px 0px rgba(var(--rgb-primary), 0.3);
    --shadow-lg: 6px 6px 0px rgba(var(--rgb-primary), 0.35);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1.5rem;
    --transition: 0.15s ease-out;
    --heading-weight: 800;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: var(--color-surface); }
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); border: 2px solid var(--color-primary); padding: var(--space-card); transition: var(--transition); background: #ffffff; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); border: 2px solid var(--color-primary); background: var(--color-primary); color: white; transition: var(--transition); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration: none; border-bottom: 2px solid transparent; }

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

/* news: masonry-2 */
/* 两列瀑布流 */
.news-grid { column-count: 2; column-gap: var(--space-gap); }
.news-grid .card { break-inside: avoid; margin-bottom: var(--space-gap); }

/* 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; }

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

/* partners: scroll */
/* 自动滚动 */
.partner-grid { display: flex; gap: 1.5rem; overflow: hidden; animation: partnerScroll 18s linear infinite; }
.partner-grid .card { border-color: #cbd5e1; box-shadow: 3px 3px 0 #cbd5e1; }
@keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

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

/* stats: inline */
/* 水平排列 */
.stats-grid { display: flex; justify-content: center; gap: 3rem; }

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }

/* Page Layout: narrow-centered */
/* 窄版居中 */
.page-main { max-width: 860px; margin: 0 auto; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translate(-2px, -2px); box-shadow: var(--shadow-lg); border-color: var(--color-accent); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { background: var(--color-accent); border-color: var(--color-accent); }
a:not([class]):hover { color: var(--color-accent); border-bottom-color: var(--color-accent); }
header, .header, .navbar { background: transparent; border-bottom: 2px solid rgba(var(--rgb-primary), 0.1); }

/* 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: 1.5rem; }
    .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; }
}