/* CSSVariantEngine v3.0 — int-bifenwang.com.cn */
/* Palette: burnt sienna + lime green | Radius: very large | Shadow: soft pillowy multi-layer */
/* Spacing: airy generous | Transition: smooth elastic */
/* Section layouts: {"news":"grid-3","features":"grid-3","hero":"overlay","testimonials":"carousel","partners":"grid-4","faq":"single-column","stats":"inline","cta":"card-style"} */

:root {
    --color-primary: #7c2d12;
    --color-primary-dark: #431407;
    --color-accent: #16a34a;
    --color-surface: #fff7ed;
    --color-text: #29150b;
    --rgb-primary: 124,45,18;
    --rgb-accent: 22,163,74;
    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 24px;
    --radius-xl: 28px;
    --shadow-sm: 0 4px 12px rgba(124, 45, 18, 0.07);
    --shadow-md: 0 10px 28px rgba(124, 45, 18, 0.13), 0 3px 10px rgba(22, 163, 74, 0.07);
    --shadow-lg: 0 18px 52px rgba(124, 45, 18, 0.19), 0 5px 18px rgba(22, 163, 74, 0.11);
    --space-section: 5rem;
    --space-card: 2.5rem;
    --space-gap: 2rem;
    --transition: 0.4s cubic-bezier(0.25, 1, 0.5, 1);
    --heading-weight: 700;
    --body-line-height: 1.65;
    caret-color: var(--color-accent);
    accent-color: var(--color-accent);
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: #fffbeb; }
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 2px 4px rgba(124,45,18,0.06); }
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); border: 3px solid #fed7aa; background-color: #ffffff; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); border: 2px solid var(--color-accent); background-color: var(--color-accent); color: white; }
a:not([class]) { color: var(--color-accent); transition: var(--transition); text-decoration-thickness: 2px; text-underline-offset: 3px; }
a:focus, .btn:focus { outline: 3px solid #22c55e; outline-offset: 4px; }

/* ========== 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; }
.hero-content { position: relative; z-index: 1; }

/* testimonials: carousel */
/* 单条轮播 */
.testimonial-list { display: flex; overflow: hidden; gap: 1.5rem; } 
.testimonial-list > * { flex: 0 0 100%; }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }

/* 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: card-style */
.cta-inner { background: linear-gradient(120deg, #ecfccb, #fff7ed); border-radius: var(--radius-xl); padding: 3.5rem; text-align: center; border: 4px solid #86efac; box-shadow: var(--shadow-lg); }

/* 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(145deg, #7c2d12, #166534); }
header, .header, .navbar { background: rgba(255,251,235,0.92); backdrop-filter: blur(12px); border-bottom: 2px solid #fed7aa; }

/* 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: 2.5rem; --space-card: 1.2rem; --space-gap: 1rem; }
    .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; }
}