/* CSSVariantEngine v3.0 — int-yuyansports.com.cn */
/* Palette: editorial cream-red | Radius: generous rounded | Shadow: multi-layer gradient | Spacing: spacious editorial | Transition: long smooth */
/* Section layouts: {"news":"grid-4","features":"grid-2","hero":"split","testimonials":"stacked","partners":"scroll","faq":"two-column","stats":"inline","cta":"full-bg"} */

:root {
    --color-primary: #c44536;
    --color-primary-dark: #9b2c21;
    --color-accent: #6b705c;
    --color-surface: #f5f1e8;
    --color-text: #1a1a1a;
    --rgb-primary: 196, 69, 54;
    --rgb-accent: 107, 112, 92;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 4px rgba(26,26,26,0.06), 0 1px 2px rgba(196,69,54,0.04);
    --shadow-md: 0 4px 12px rgba(26,26,26,0.08), 0 2px 6px rgba(196,69,54,0.06), 0 1px 3px rgba(26,26,26,0.04);
    --shadow-lg: 0 8px 24px rgba(26,26,26,0.1), 0 4px 12px rgba(196,69,54,0.08), 0 2px 6px rgba(26,26,26,0.06);
    --space-section: 4.5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
    --heading-weight: 700;
    --body-line-height: 1.7;
    accent-color: var(--color-primary);
    caret-color: var(--color-primary);
}

/* 基础覆盖 */
body { 
    color: var(--color-text); 
    line-height: var(--body-line-height); 
    background: linear-gradient(180deg, #f5f1e8 0%, #f0ebe0 100%);
    min-height: 100vh;
}
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 1px 2px rgba(196,69,54,0.05); }
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%, #f8f5ed 100%);
    border: 1px solid transparent;
    border-image: linear-gradient(135deg, rgba(196,69,54,0.2) 0%, rgba(245,241,232,0.9) 50%, rgba(107,112,92,0.2) 100%) 1;
}
.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: var(--transition); 
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: #fffdfa;
    box-shadow: var(--shadow-sm);
}
a:not([class]) { 
    color: var(--color-primary); 
    transition: var(--transition); 
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
}

/* ========== 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: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 28s 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: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; }

/* cta: full-bg */
.cta-section { 
    background: linear-gradient(135deg, #c44536 0%, #a8362a 35%, #7a2118 100%); 
    color: #fffdfa; 
    padding: 4rem 2rem; 
    box-shadow: inset 0 0 80px rgba(0,0,0,0.15);
}

/* Page Layout: narrow-centered */
/* 宽版居中 */
            .page-main { max-width: 1320px; margin: 0 auto; padding: 0 4rem; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { 
    transform: translateY(-6px); 
    box-shadow: var(--shadow-lg); 
    border-image: linear-gradient(135deg, rgba(196,69,54,0.5) 0%, rgba(245,241,232,0.9) 50%, rgba(107,112,92,0.5) 100%) 1;
}
a:not([class]):hover { color: var(--color-accent); }
header, .header, .navbar { 
    background: linear-gradient(to bottom, rgba(245,241,232,0.95) 0%, rgba(245,241,232,0.85) 100%); 
    backdrop-filter: blur(10px);
}

/* 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; }
    .page-main { padding: 0 2rem; }
}
@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; }
    .page-main { padding: 0 1rem; }
}