/* CSSVariantEngine v3.0 — card-mosaic */
/* Palette: coral-amber | Radius: soft | Shadow: layered */
/* Spacing: balanced | Transition: smooth */
/* Section layouts: {"news":"list-view","features":"horizontal","hero":"minimal","testimonials":"stacked","partners":"centered","faq":"two-column","stats":"grid-3","cta":"full-bg"} */

:root {
    --color-primary: #e2574a;
    --color-primary-dark: #b93c32;
    --color-accent: #f5a83d;
    --color-surface: #fbf3ec;
    --color-text: #352e2b;
    --rgb-primary: 226,87,74;
    --rgb-accent: 245,168,61;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 5px rgba(0,0,0,0.03), 0 10px 18px -8px rgba(0,0,0,0.07);
    --shadow-md: 0 4px 10px rgba(0,0,0,0.04), 0 22px 44px -12px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 18px rgba(0,0,0,0.05), 0 32px 64px -16px rgba(0,0,0,0.18);
    --card-news: #fff4e6;
    --card-feature: #edf3ff;
    --card-testimonial: #fdeef4;
    --card-partner: #eaf7ed;
    --card-faq: #fbf7d7;
    --card-stats: #f0ecff;
    --space-section: 3rem;
    --space-card: 1.375rem;
    --space-gap: 1.125rem;
    --transition: 0.4s ease;
    --heading-weight: 800;
    --body-line-height: 1.6;
}

body { background: var(--color-surface); color: var(--color-text); line-height: var(--body-line-height); }
h1, h2, h3, h4 { color: var(--color-primary-dark); 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: #ffffff; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); box-shadow: 0 2px 6px rgba(var(--rgb-primary), 0.12); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

/* ========== 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; background: var(--card-news); border-color: rgba(var(--rgb-accent), 0.2); box-shadow: var(--shadow-lg); }

/* features: horizontal */
/* 水平滚动 */
                .feature-list { display: flex; gap: var(--space-gap); overflow-x: auto; scroll-snap-type: x mandatory; }
                .feature-list > * { flex: 0 0 300px; scroll-snap-align: start; background: var(--card-feature); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }

/* hero: minimal */
.hero { padding: 2rem 0; background: radial-gradient(circle at 20% 30%, rgba(var(--rgb-accent), 0.14), transparent 60%); } .hero-content { max-width: 560px; }

/* testimonials: stacked */
/* 垂直堆叠 */
                .testimonial-list { display: flex; flex-direction: column; gap: var(--space-gap); max-width: 720px; margin: 0 auto; background: var(--card-testimonial); }

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; background: var(--card-partner); }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); background: var(--card-faq); }

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

/* cta: full-bg */
.cta-section { background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark)); color: #ffffff; padding: 4rem 2rem; box-shadow: var(--shadow-lg); }

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

/* 条件性装饰 */
.card { border: 1px solid rgba(var(--rgb-accent), 0.18); background: #ffffff; box-shadow: var(--shadow-md); }
header, .header, .navbar { background: rgba(255,255,255,0.7); backdrop-filter: blur(12px); box-shadow: 0 4px 20px rgba(0,0,0,0.04); }

/* 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: 2.25rem; --space-card: 1.125rem; --space-gap: 0.875rem; }
    .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; }
}