/* CSSVariantEngine v3.0 — int-pgemulator.com.cn */
/* Palette: deep red editorial | Radius: soft rounded | Shadow: glow-accent */
/* Spacing: generous | Transition: warm ease */
/* Section layouts: {"news":"grid-4","features":"grid-2","hero":"split","testimonials":"carousel","partners":"centered","faq":"single-column","stats":"inline","cta":"full-bg"} */

@keyframes subtle-pulse {
    0%, 100% { box-shadow: 0 0 18px rgba(var(--rgb-primary), 0.3); }
    50% { box-shadow: 0 0 26px rgba(var(--rgb-primary), 0.5); }
}

:root {
    --color-primary: #c44536;
    --color-primary-dark: #9b2f22;
    --color-accent: #e07163;
    --color-surface: #f5f1e8;
    --color-text: #1a1a1a;
    --rgb-primary: 196, 69, 54;
    --rgb-accent: 224, 113, 99;
    --radius-sm: 8px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 16px;
    --shadow-sm: 0 0 12px rgba(var(--rgb-primary), 0.2);
    --shadow-md: 0 0 24px rgba(var(--rgb-primary), 0.4);
    --shadow-lg: 0 0 32px rgba(var(--rgb-primary), 0.6);
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;
    --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --heading-weight: 600;
    --body-line-height: 1.65;
    --caret-color: var(--color-primary);
    --accent-color: var(--color-primary);
}

/* 基础覆盖 */
body { background-color: var(--color-surface); color: var(--color-text); line-height: var(--body-line-height); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 1px 2px rgba(var(--rgb-primary), 0.08); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); padding: var(--space-card); transition: var(--transition); border: 1px solid rgba(var(--rgb-primary), 0.12); background-color: #ffffff; }
.card:hover, [class*="card"]:hover { box-shadow: var(--shadow-md); animation: subtle-pulse 2.5s infinite ease-in-out; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); border: none; }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { box-shadow: var(--shadow-lg); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:not([class]):hover { color: var(--color-primary-dark); text-shadow: 0 0 8px rgba(var(--rgb-primary), 0.3); }

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

/* news: grid-4 */
/* 四列紧凑网格 */
.news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 0.8); }

/* features: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }

/* hero: split */
/* 左文右图 */
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center; }

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

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

/* 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: 3rem; }

/* cta: full-bg */
.cta-section { background: linear-gradient(135deg, #1a1a1a, #2d2d2d); color: var(--color-surface); padding: 4rem 2rem; box-shadow: inset 0 0 80px rgba(var(--rgb-primary), 0.15); }

/* Page Layout: narrow-centered */
/* 宽版居中 */
.page-main { max-width: 1320px; margin: 0 auto; }

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark)); color: #ffffff; box-shadow: 0 8px 40px rgba(var(--rgb-primary), 0.35); }
header, .header, .navbar { background: rgba(245, 241, 232, 0.85); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(var(--rgb-primary), 0.1); }

/* 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; }
}