/* CSSVariantEngine v3.0 — baoying-yul.com */
/* Palette: midnight-indigo | Radius: soft | Shadow: layered-gradient */
/* Spacing: tight | Transition: smooth-long */
/* Section layouts: {"news":"featured-top","features":"centered","hero":"minimal","testimonials":"stacked","partners":"centered","faq":"two-column","stats":"big-number","cta":"card-style"} */

:root {
    --color-primary: #3b4cca;
    --color-primary-dark: #252e3a;
    --color-accent: #7c8cf8;
    --color-surface: #eef1fb;
    --color-text: #1a2233;
    --rgb-primary: 59,76,202;
    --rgb-accent: 124,140,248;
    --radius-sm: 2px;
    --radius-md: 6px;
    --radius-lg: 10px;
    --radius-xl: 16px;
    --shadow-sm: 0 1px 3px rgba(37,46,58,.10), 0 1px 2px rgba(59,76,202,.06);
    --shadow-md: 0 2px 6px rgba(37,46,58,.12), 0 4px 14px rgba(59,76,202,.10);
    --shadow-lg: 0 8px 20px rgba(37,46,58,.16), 0 12px 32px rgba(59,76,202,.14);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
    --heading-weight: 800;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(180deg, #f6f8ff 0%, #eef1fb 100%); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); background: linear-gradient(120deg, #252e3a 0%, #3b4cca 100%); -webkit-background-clip: text; background-clip: text; }
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(145deg, #ffffff 0%, #eef1fb 60%, #e3e8fa 100%); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, #3b4cca 0%, #252e3a 100%); color: #f6f8ff; box-shadow: 0 2px 8px rgba(59,76,202,.28); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

/* ========== 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: minimal */
.hero { padding: 2rem 0; background: radial-gradient(ellipse at 30% 0%, rgba(124,140,248,.18) 0%, rgba(238,241,251,0) 65%); } .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: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }

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

/* 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, #3b4cca 0%, #7c8cf8 50%, #252e3a 100%); -webkit-background-clip: text; background-clip: text; }

/* cta: card-style */
.cta-inner { background: linear-gradient(150deg, #252e3a 0%, #3b4cca 55%, #7c8cf8 100%); border-radius: var(--radius-xl); padding: 3rem; text-align: center; color: #f6f8ff; box-shadow: 0 10px 30px rgba(37,46,58,.28), 0 4px 14px rgba(59,76,202,.22); }

/* 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: translateY(-4px); box-shadow: var(--shadow-lg); background: linear-gradient(145deg, #ffffff 0%, #e6ebfb 50%, #d8e0f7 100%); }
.card { border-left: 3px solid var(--color-primary); border-image: linear-gradient(180deg, #3b4cca 0%, #7c8cf8 100%) 1; }
header, .header, .navbar { box-shadow: 0 4px 16px rgba(37,46,58,.14), 0 2px 6px rgba(59,76,202,.10); background: linear-gradient(180deg, #ffffff 0%, #eef1fb 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; }
}