/* CSSVariantEngine v3.0 — zh-int-uballsports.com.cn */
/* Palette: tangerine-teal | Radius: large airy | Shadow: pillowy layered */
/* Spacing: generous | Transition: smooth easing */
/* Section layouts: {"news":"featured-top","features":"grid-4","hero":"minimal","testimonials":"stacked","partners":"scroll","faq":"two-column","stats":"big-number","cta":"full-bg"} */

:root {
    --color-primary: #ff6b35;
    --color-primary-dark: #d63b00;
    --color-accent: #2ec4b6;
    --color-surface: #fdfffc;
    --color-text: #011627;
    --rgb-primary: 255,107,53;
    --rgb-accent: 46,196,182;
    --radius-sm: 16px;
    --radius-md: 20px;
    --radius-lg: 24px;
    --radius-xl: 28px;
    --shadow-sm: 0 8px 20px rgba(var(--rgb-primary),.07), 0 2px 6px rgba(var(--rgb-accent),.05);
    --shadow-md: 0 12px 32px rgba(var(--rgb-primary),.11), 0 4px 12px rgba(var(--rgb-accent),.09);
    --shadow-lg: 0 20px 48px rgba(var(--rgb-primary),.14), 0 8px 24px rgba(var(--rgb-accent),.12);
    --space-section: 3.5rem;
    --space-card: 2rem;
    --space-gap: 2.25rem;
    --transition: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    --heading-weight: 800;
    --body-line-height: 1.6;
    accent-color: var(--color-primary);
    caret-color: var(--color-primary-dark);
}

/* 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); text-shadow: 0 1px 2px rgba(var(--rgb-primary), 0.08); }
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-color: #ffffff; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); border: 2px solid var(--color-primary); background-color: var(--color-primary); color: white; }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration-thickness: 2px; text-underline-offset: 3px; }

/* ========== 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; }
.news-section { background-color: #f0fffd; }

/* features: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }
.features-section { background-color: #fff7f3; }

/* 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; }
.testimonials-section { background-color: #fef0eb; }

/* partners: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 16s ease-in-out 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); }
.faq-section { background-color: #e8f8f7; }

/* 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); text-shadow: 0 2px 8px rgba(var(--rgb-accent), 0.15); }

/* cta: full-bg */
.cta-section { background: linear-gradient(120deg, #011627, #202a38); color: #fdfffc; padding: 4rem 2rem; border-top: 4px solid var(--color-primary); border-bottom: 4px solid var(--color-accent); }

/* 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(-8px); box-shadow: var(--shadow-lg); border-color: var(--color-accent); }
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #ff6b35, #2ec4b6); color: white; }
.card { border: 2px solid rgba(var(--rgb-accent), .3); }
header, .header, .navbar { box-shadow: 0 6px 18px rgba(var(--rgb-primary), 0.06), 0 2px 6px rgba(var(--rgb-accent), 0.04); background-color: rgba(255,255,255,0.92); backdrop-filter: blur(12px); }

/* 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: 1.25rem; --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; }
}