/* CSSVariantEngine v3.0 — b-sports-intl4.com.cn */
/* Palette: sidebar-classic | Radius: medium | Shadow: glow */
/* Spacing: airy | Transition: smooth */
/* Section layouts: {"news":"grid-4","features":"grid-2","hero":"split","testimonials":"stacked","partners":"centered","faq":"two-column","stats":"big-number","cta":"centered"} */

:root {
    --color-primary: #252e3a;
    --color-primary-dark: #161c24;
    --color-accent: #f0a64a;
    --color-surface: #f6f2eb;
    --color-text: #1b2129;
    --color-card: #fffdf8;
    --rgb-primary: 37,46,58;
    --rgb-accent: 240,166,74;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 14px;
    --radius-xl: 16px;
    --shadow-sm: 0 1px 4px rgba(37,46,58,0.08), 0 0 12px rgba(240,166,74,0.18);
    --shadow-md: 0 2px 8px rgba(37,46,58,0.1), 0 0 24px rgba(240,166,74,0.4);
    --shadow-lg: 0 4px 16px rgba(37,46,58,0.16), 0 0 32px rgba(240,166,74,0.6);
    --space-section: 2.25rem;
    --space-card: 1.125rem;
    --space-gap: 0.875rem;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --heading-weight: 700;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: var(--color-surface); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: var(--color-primary-dark); }
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-card); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: var(--color-accent); color: var(--color-primary-dark); box-shadow: var(--shadow-sm); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

/* Glow hover halos */
.card:hover, [class*="card"]:hover { box-shadow: var(--shadow-lg); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { box-shadow: var(--shadow-lg); filter: brightness(1.08); }

@keyframes glowPulse {
    0%, 100% { box-shadow: 0 0 12px rgba(240, 166, 74, 0.18); }
    50% { box-shadow: 0 0 28px rgba(240, 166, 74, 0.4); }
}

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

/* news: grid-4 */
/* 四列紧凑网格 */
.news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 0.8); }

/* 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: 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; text-shadow: 0 0 18px rgba(240, 166, 74, 0.35); }

/* 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 */
.hero, [class*="hero"], section:first-of-type { background: radial-gradient(ellipse at 20% 20%, rgba(240,166,74,0.15), transparent 50%), linear-gradient(135deg, #252e3a, #161c24); animation: glowPulse 4s ease-in-out infinite; }
.card { border-left: 3px solid var(--color-accent); }

/* 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: 1.75rem; --space-card: 0.875rem; --space-gap: 0.6875rem; }
    .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; }
}