/* CSSVariantEngine v3.0 — home2-kaiyuan-sports.cn */
/* Palette: ember | Radius: sharp | Shadow: hairline */
/* Spacing: tight | Transition: snappy */
/* Section layouts: {"news":"featured-left","features":"grid-3","hero":"centered","testimonials":"grid-3","partners":"centered","faq":"single-column","stats":"inline","cta":"split"} */

:root {
    --color-primary: #fb923c;
    --color-primary-dark: #7c2d12;
    --color-accent: #fbbf24;
    --color-surface: #241512;
    --color-surface-alt: #180d0b;
    --color-card: #33201a;
    --color-card-deep: #1d110d;
    --color-canvas: #100907;
    --color-text: #fff1e6;
    --color-border: #b45309;
    --color-on-accent: #1c0f0a;
    --rgb-primary: 251,146,60;
    --rgb-accent: 251,191,36;
    --radius-sm: 2px;
    --radius-md: 4px;
    --radius-lg: 6px;
    --radius-xl: 8px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.45), inset 0 0 0 1px rgba(251,146,60,.06);
    --shadow-md: 0 2px 4px rgba(0,0,0,.45), 0 1px 2px rgba(0,0,0,.35), inset 0 0 0 1px rgba(251,146,60,.14);
    --shadow-lg: 0 8px 16px rgba(0,0,0,.5), 0 2px 4px rgba(0,0,0,.4), inset 0 0 0 1px rgba(251,146,60,.22);
    --space-section: 3.25rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.2s cubic-bezier(0.22, 0.61, 0.36, 1);
    --heading-weight: 800;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background-color: var(--color-canvas);
}
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section, .section {
    padding-top: var(--space-section);
    padding-bottom: var(--space-section);
    background-color: var(--color-surface);
    box-shadow: inset 0 1px 0 rgba(251,146,60,.08), inset 0 -1px 0 rgba(0,0,0,.35);
}
section:nth-of-type(even) {
    background-color: var(--color-surface-alt);
}
.card, [class*="card"] {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--space-card);
    transition: var(--transition);
    background-color: var(--color-card);
    background-image: linear-gradient(145deg, var(--color-card-deep), var(--color-card));
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    background-color: var(--color-accent);
    color: var(--color-on-accent);
    box-shadow: 0 1px 2px rgba(0,0,0,.35), inset 0 0 0 1px rgba(251,146,60,.3);
    transition: var(--transition);
}
a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
    text-decoration-color: rgba(251,191,36,.5);
}

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

/* news: featured-left */
/* 左大右小 (1大+2小) */
                .news-grid { display: grid; grid-template-columns: 2fr 1fr; grid-template-rows: auto auto; gap: var(--space-gap); }
                .news-grid > *:first-child { grid-row: span 2; }

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

/* hero: centered */
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }

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

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 1.75rem; }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 2.5rem; }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2.25rem; }

/* 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: var(--shadow-lg); }
header, .header, .navbar {
    color: var(--color-text);
    background-color: rgba(18,10,8,.88);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 1px 0 rgba(251,146,60,.18), 0 4px 12px rgba(0,0,0,.35);
}

/* 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: 0.7rem; }
    .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; }
}