/* CSSVariantEngine v3.0 — asymmetric-blocks / tight-rhythm */
/* Palette: ember | Radius: sharp | Shadow: inset-ring */
/* Spacing: tight | Transition: snappy */
/* Section layouts: {"news":"grid-3","features":"grid-4","hero":"centered","testimonials":"masonry","partners":"scroll","faq":"single-column","stats":"grid-4","cta":"split"} */

:root {
    --color-primary: #b45309;
    --color-primary-dark: #78350f;
    --color-accent: #dc2626;
    --color-surface: #fafaf9;
    --color-text: #1c1917;
    --rgb-primary: 180,83,9;
    --rgb-accent: 220,38,38;
    --radius-sm: 2px;
    --radius-md: 3px;
    --radius-lg: 5px;
    --radius-xl: 8px;
    --shadow-sm: 0 1px 0 rgba(28,25,23,.04);
    --shadow-md: 0 1px 2px rgba(28,25,23,.06), inset 0 0 0 1px rgba(214,211,209,.7);
    --shadow-lg: 0 2px 8px rgba(28,25,23,.08), inset 0 0 0 1px rgba(214,211,209,.7);
    --space-section: 1.75rem;
    --space-card: 0.875rem;
    --space-gap: 0.625rem;
    --transition: 0.16s 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); caret-color: var(--color-accent); accent-color: var(--color-accent); }
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: #ffffff; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); box-shadow: var(--shadow-sm); }
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); background: #fffbeb; box-shadow: inset 0 0 0 1px rgba(245,158,11,.22); border-radius: var(--radius-md); }

/* features: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); background: #f5f5f4; box-shadow: inset 0 0 0 1px rgba(28,25,23,.08); border-radius: var(--radius-md); }

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

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); background: #fef2f2; box-shadow: inset 0 0 0 1px rgba(220,38,38,.14); border-radius: var(--radius-md); }
.testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }

/* partners: scroll */
/* 自动滚动 */
.partner-grid { display: flex; gap: 1.75rem; overflow: hidden; background: #fafaf9; box-shadow: inset 0 0 0 1px rgba(28,25,23,.06); animation: partnerScroll 26s linear infinite; }
@keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

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

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; background: #fff7ed; box-shadow: inset 0 0 0 1px rgba(234,88,12,.18); border-radius: var(--radius-md); }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 1.75rem; }

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

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(120deg, #1c1917 0%, #1c1917 38%, #78350f 38.5%, #b45309 100%); text-shadow: 0 1px 2px rgba(0,0,0,.22); }
.card { border-left: 3px solid var(--color-accent); }

/* 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: 0.625rem; }
    .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; }
}