/* CSSVariantEngine v3.0 — oba-btisport.com */
/* Palette: teal-rose | Radius: pill-soft | Shadow: layered-glow */
/* Spacing: spacious | Transition: silky */
/* Section layouts: {"news":"grid-3","features":"grid-3","hero":"overlay","testimonials":"masonry","partners":"grid-6","faq":"two-column","stats":"inline","cta":"split"} */

:root {
    --color-primary: #0f766e;
    --color-primary-dark: #115e59;
    --color-accent: #e11d48;
    --color-surface: #f0fdfa;
    --color-text: #1e293b;
    --rgb-primary: 15,118,110;
    --rgb-accent: 225,29,72;
    --radius-sm: 6px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-xl: 32px;
    --shadow-sm: 0 1px 2px rgba(15,118,110,.10), 0 2px 6px rgba(225,29,72,.06);
    --shadow-md: 0 6px 14px rgba(15,118,110,.14), 0 3px 8px rgba(225,29,72,.08);
    --shadow-lg: 0 18px 32px rgba(15,118,110,.18), 0 8px 16px rgba(225,29,72,.12), 0 2px 4px rgba(0,0,0,.04);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.55s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 600;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(180deg, #f0fdfa 0%, #ecfeff 45%, #fdf2f8 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(135deg, #ffffff 0%, #f0fdfa 55%, #fff1f2 100%); border: 1px solid rgba(15,118,110,.14); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, #0f766e 0%, #14b8a6 50%, #e11d48 100%); color: #ffffff; border: 1px solid rgba(15,118,110,.35); box-shadow: 0 4px 12px rgba(15,118,110,.22), 0 2px 6px rgba(225,29,72,.16); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

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

/* news: grid-3 */
/* 三列等宽网格 */
                .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

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

/* hero: overlay */
/* 全屏背景+文字覆盖 */
                .hero { position: relative; min-height: 70vh; display: flex; align-items: center; background: linear-gradient(135deg, rgba(15,118,110,.92) 0%, rgba(20,184,166,.78) 45%, rgba(225,29,72,.72) 100%); }
                .hero-content { position: relative; z-index: 1; color: #ffffff; text-shadow: 0 2px 8px rgba(15,118,110,.35), 0 1px 3px rgba(0,0,0,.20); }

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
                .testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }

/* partners: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center; }

/* 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: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; background: linear-gradient(120deg, #ecfeff 0%, #f0fdfa 40%, #fff1f2 100%); border-radius: var(--radius-xl); padding: 2rem; border: 1px solid rgba(225,29,72,.16); box-shadow: var(--shadow-md); }

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); background: linear-gradient(135deg, #ffffff 0%, #ecfeff 50%, #ffe4e6 100%); }
header, .header, .navbar { background: linear-gradient(180deg, rgba(240,253,250,.85) 0%, rgba(240,253,250,0) 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; }
}
@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; }
}