/* CSSVariantEngine v3.0 — cailayuan-qq.com.cn */
/* Palette: warm-strips | Radius: tight-small | Shadow: subtle-flat */
/* Spacing: tight-rhythm | Transition: smooth-fast */
/* Section layouts: {"news":"grid-3","features":"centered","hero":"minimal","testimonials":"grid-3","partners":"centered","faq":"single-column","stats":"grid-3","cta":"centered"} */

:root {
    --color-primary: #b45309;
    --color-primary-dark: #78350f;
    --color-accent: #f97316;
    --color-surface: #fff7ed;
    --color-text: #292524;
    --rgb-primary: 180,83,9;
    --rgb-accent: 249,115,22;
    --radius-sm: 3px;
    --radius-md: 5px;
    --radius-lg: 4px;
    --radius-xl: 6px;
    --shadow-sm: 0 1px 3px rgba(41,37,36,.07);
    --shadow-md: 0 2px 6px rgba(41,37,36,.05);
    --shadow-lg: 0 1px 4px rgba(41,37,36,.04);
    --space-section: 2.25rem;
    --space-card: 0.875rem;
    --space-gap: 0.625rem;
    --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
    --heading-weight: 800;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: #ffffff; }
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
section:nth-child(even), .section:nth-child(even) { background-color: var(--color-surface); }
section:nth-child(4), .section:nth-child(4) { background-color: #292524; color: #fff7ed; }
.card, [class*="card"] { border-radius: var(--radius-md); box-shadow: var(--shadow-sm); padding: var(--space-card); transition: var(--transition); background-color: #ffffff; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-sm); transition: var(--transition); background-color: var(--color-primary); color: white; border: 1px solid var(--color-primary-dark); }
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); }

/* features: centered */
/* 居中大卡片 */
                .feature-list { display: flex; flex-direction: column; align-items: center; gap: calc(var(--space-gap) * 2); max-width: 720px; margin: 0 auto; }

/* hero: minimal */
.hero { padding: 2rem 0; background-color: var(--color-surface); } .hero-content { max-width: 560px; }

/* testimonials: grid-3 */
.testimonial-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

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

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
            .page-main { max-width: 1200px; margin: 0 auto; }

/* 条件性装饰 */
.card { border: 1px solid rgba(var(--rgb-primary), .1); }
header, .header, .navbar { box-shadow: 0 1px 2px rgba(41,37,36,.06); background-color: #ffffff; border-bottom: 1px solid var(--color-surface); }

/* 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: 0.75rem; --space-gap: 0.5rem; }
    .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; }
}