/* CSSVariantEngine v3.0 — zuqiu-zh.net.cn */
/* Palette: horizontal-strips | Radius: medium-glow | Shadow: glow-accent */
/* Spacing: generous strip padding | Transition: smooth-glow */
/* Section layouts: {"news":"featured-top","features":"grid-2","hero":"split","testimonials":"grid-3","partners":"scroll","faq":"two-column","stats":"big-number","cta":"centered"} */

:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-accent: #14b8a6;
    --color-surface: #fef7ed;
    --color-text: #1e293b;
    --rgb-primary: 37, 99, 235;
    --rgb-accent: 20, 184, 166;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 14px;
    --radius-xl: 16px;
    --shadow-sm: 0 0 12px rgba(var(--rgb-accent), 0.2);
    --shadow-md: 0 0 24px rgba(var(--rgb-accent), 0.4);
    --shadow-lg: 0 0 32px rgba(var(--rgb-accent), 0.55);
    --space-section: 4rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.4s ease-in-out;
    --heading-weight: 700;
    --body-line-height: 1.7;
}

@keyframes subtlePulse {
    0% { box-shadow: 0 0 20px rgba(var(--rgb-accent), 0.3); }
    50% { box-shadow: 0 0 26px rgba(var(--rgb-accent), 0.5); }
    100% { box-shadow: 0 0 20px rgba(var(--rgb-accent), 0.3); }
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: #ffffff; }
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section:nth-child(even), .section:nth-child(even) { background-color: var(--color-surface); }
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); animation: subtlePulse 3s ease-in-out infinite; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background-color: var(--color-primary); color: white; border: none; }
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: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }

/* hero: split */
/* 左文右图 */
                .hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center; }

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

/* partners: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 20s linear infinite; }
                @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: 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-primary); }

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

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-4px); box-shadow: 0 0 32px rgba(var(--rgb-accent), 0.6); animation-play-state: paused; }
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #0f172a, #1e293b); color: #f8fafc; }
.card { border: 1px solid rgba(var(--rgb-accent), 0.15); background-color: white; }

/* 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: 2.5rem; --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; }
}