/* CSSVariantEngine v3.0 — direct-fbsports.com.cn */
/* Palette: gradient-rich asymmetric | Radius: expressive | Shadow: multi-layer colored */
/* Spacing: mixed tight-loose | Transition: 0.5s smooth cubic */
/* Section layouts: {"news":"list-view","features":"grid-4","hero":"overlay","testimonials":"masonry","partners":"grid-4","faq":"two-column","stats":"inline","cta":"split"} */

:root {
    --color-primary: #ff3d00;
    --color-primary-dark: #6200ea;
    --color-accent: #00e5ff;
    --color-surface: linear-gradient(135deg, #fff9c4 0%, #ffecb3 50%, #ffe0b2 100%);
    --color-text: #1a1a2e;
    --rgb-primary: 255, 61, 0;
    --rgb-accent: 0, 229, 255;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 3px 10px rgba(255,61,0,0.2), 0 1px 3px rgba(98,0,234,0.15);
    --shadow-md: 0 6px 22px rgba(98,0,234,0.25), 0 2px 8px rgba(0,229,255,0.1);
    --shadow-lg: 0 12px 45px rgba(255,61,0,0.3), 0 4px 15px rgba(98,0,234,0.2);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.5s cubic-bezier(0.23, 1, 0.32, 1);
    --heading-weight: 600;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body { 
    color: var(--color-text); 
    line-height: var(--body-line-height); 
    background: linear-gradient(180deg, #fff8e1 0%, #ffe0b2 50%, #ffccbc 100%);
}
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
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(45deg, #ffffff 0%, #fff3e0 50%, #f3e5f5 100%);
}
.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: var(--transition); 
    background: linear-gradient(90deg, #ff3d00 0%, #6200ea 100%);
    color: white;
}
a:not([class]) { 
    color: var(--color-primary-dark); 
    transition: var(--transition); 
    text-decoration-thickness: 2px;
    text-decoration-color: rgba(255,61,0,0.4);
}
a:not([class]):hover {
    color: var(--color-primary);
    text-decoration-color: rgba(98,0,234,0.6);
}

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

/* news: list-view */
/* 列表模式 (图左文右) */
.news-grid { display: flex; flex-direction: column; gap: var(--space-gap); }
.news-grid .card { display: grid; grid-template-columns: 280px 1fr; }
.news-grid .card:nth-child(odd) {
    background: linear-gradient(-45deg, #e3f2fd 0%, #bbdefb 50%, #e1f5fe 100%);
}
.news-grid .card:nth-child(even) {
    background: linear-gradient(45deg, #fce4ec 0%, #f8bbd0 50%, #f3e5f5 100%);
}

/* features: grid-4 */
.features.section {
    background: linear-gradient(225deg, #fce4ec 0%, #f8bbd0 100%);
}
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }
.feature-list .card {
    background: linear-gradient(135deg, #ffffff 0%, #fff9c4 100%);
    border-image: linear-gradient(135deg, #ff3d00, #6200ea) 1;
}

/* hero: overlay */
/* 全屏背景+文字覆盖 */
.hero { 
    position: relative; 
    min-height: 70vh; 
    display: flex; 
    align-items: center; 
    background: linear-gradient(120deg, #6200ea 0%, #ff3d00 50%, #00e5ff 100%);
}
.hero-content { 
    position: relative; 
    z-index: 1; 
    color: white;
    text-shadow: 0 2px 12px rgba(0,0,0,0.25);
}

/* testimonials: masonry */
.testimonials.section {
    background: linear-gradient(45deg, #f3e5f5 0%, #e1bee7 100%);
}
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
.testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }
.testimonial-list .card {
    background: linear-gradient(-45deg, #ffffff 0%, #f3e5f5 100%);
    border-image: linear-gradient(45deg, #6200ea, #00e5ff) 1;
}

/* partners: grid-4 */
.partners.section {
    background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
}
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }
.partner-grid .card {
    background: linear-gradient(180deg, #ffffff 0%, #e8f5e9 100%);
}

/* faq: two-column */
.faq.section {
    background: linear-gradient(-45deg, #fff3e0 0%, #ffe0b2 100%);
}
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }
.faq-list .card {
    background: linear-gradient(90deg, #ffffff 0%, #fff3e0 100%);
    border-image: linear-gradient(90deg, #ff3d00, #ff9800) 1;
}

/* stats: inline */
/* 水平排列 */
.stats.section {
    background: linear-gradient(90deg, #e0f7fa 0%, #b2ebf2 100%);
}
.stats-grid { display: flex; justify-content: center; gap: 3rem; }

/* cta: split */
.cta.section {
    background: linear-gradient(60deg, #ff6f00 0%, #ffd60a 100%);
}
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
.page-main { max-width: 1200px; margin: 0 auto; }

/* 条件性装饰 */
.card { 
    border: 1px solid; 
    border-image: linear-gradient(135deg, #ff3d00, #6200ea, #00e5ff) 1; 
}
.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 50px rgba(255,61,0,0.35), 0 6px 20px rgba(98,0,234,0.25);
}
header, .header, .navbar { 
    background: linear-gradient(90deg, rgba(255,255,255,0.9) 0%, rgba(255,243,224,0.85) 100%);
    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: 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; }
}