/* CSSVariantEngine v3.0 — sv-sinuoke.com.cn */
/* Palette: high-contrast sharp | Radius: ultra-minimal | Shadow: hard-offset */
/* Spacing: mixed contrast | Transition: snappy */
/* Section layouts: {"news":"masonry-2","features":"grid-3","hero":"centered","testimonials":"carousel","partners":"scroll","faq":"single-column","stats":"grid-3","cta":"split"} */

:root {
    --color-primary: #0f172a;
    --color-primary-dark: #020617;
    --color-accent: #ef4444;
    --color-surface: #fef08a;
    --color-text: #0f172a;
    --rgb-primary: 15,23,42;
    --rgb-accent: 239,68,68;
    --radius-sm: 0px;
    --radius-md: 2px;
    --radius-lg: 3px;
    --radius-xl: 4px;
    --shadow-sm: 2px 2px 0px #000000;
    --shadow-md: 4px 4px 0px rgba(15,23,42,0.9);
    --shadow-lg: 6px 6px 0px rgba(15,23,42,0.8);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.15s 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-color: #f8fafc; }
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 1px 1px 0px rgba(239,68,68,0.3); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); border-bottom: 3px solid var(--color-primary); }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); border: 3px solid var(--color-primary); background-color: var(--color-surface); }
.card:hover, [class*="card"]:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0px rgba(15,23,42,0.95); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); border: 3px solid var(--color-primary); background-color: var(--color-accent); color: white; font-weight: 700; box-shadow: var(--shadow-sm); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { transform: translate(2px, 2px); box-shadow: 0px 0px 0px #000; }
a:not([class]) { color: var(--color-accent); transition: var(--transition); font-weight: 600; text-decoration-thickness: 2px; text-underline-offset: 3px; }

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

/* news: masonry-2 */
/* 两列瀑布流 */
                .news-grid { column-count: 2; column-gap: var(--space-gap); }
                .news-grid .card { break-inside: avoid; margin-bottom: var(--space-gap); background-color: #bae6fd; }

/* features: grid-3 */
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
.feature-list .card { background-color: #bbf7d0; }

/* hero: centered */
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }
.hero-inner { background: linear-gradient(135deg, #fef08a 0%, #fbcfe8 100%); border: 3px solid var(--color-primary); box-shadow: var(--shadow-lg); padding: 3rem; }

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list { display: flex; overflow: hidden; } 
                .testimonial-list > * { flex: 0 0 100%; }
                .testimonial-list .card { background-color: #fbcfe8; }

/* partners: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 16s linear infinite; }
                .partner-grid .card { background-color: #e0e7ff; }
                @keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-list .card { background-color: #fed7aa; }

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }
.stats-grid .card { background-color: #d9f99d; }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; background-color: var(--color-primary); color: white; padding: 3rem; border: 3px solid var(--color-accent); box-shadow: var(--shadow-lg); }

/* Page Layout: wide */
/* 超宽 */
            .page-main { max-width: 1400px; margin: 0 auto; }

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-primary); text-decoration-color: var(--color-primary); }
header, .header, .navbar { background: var(--color-surface); border-bottom: 3px solid var(--color-primary); box-shadow: var(--shadow-sm); }

/* 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; }
}