:root {
    --color-primary: #c96a2c;
    --color-primary-dark: #8d451d;
    --color-accent: #446ef6;
    --color-surface: #eef2f6;
    --color-text: #253241;
    --color-sidebar: #252e3a;
    --rgb-primary: 201,106,44;
    --rgb-accent: 68,110,246;
    --radius-sm: 0px;
    --radius-md: 2px;
    --radius-lg: 4px;
    --radius-xl: 6px;
    --shadow-sm: none;
    --shadow-md: none;
    --shadow-lg: none;
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.3rem;
    --transition: 0.28s cubic-bezier(.33,1,.68,1);
    --heading-weight: 700;
    --body-line-height: 1.6;
}

body { color: var(--color-text); line-height: var(--body-line-height); background-color: #e9edf2; caret-color: var(--color-primary); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: var(--color-sidebar); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); background-color: #f6f8fb; }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: none; padding: var(--space-card); transition: var(--transition); background-color: #ffffff; color: var(--color-text); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); box-shadow: none; background-color: var(--color-primary); color: #ffffff; }
a:not([class]) { color: var(--color-primary-dark); transition: var(--transition); text-decoration-color: var(--color-accent); }

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

/* news: featured-top */
/* 首篇横跨全宽 */
                .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
                .news-grid > *:first-child { grid-column: span 3; }

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

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list { display: flex; overflow: hidden; background-color: #dde4ec; } 
                .testimonial-list > * { flex: 0 0 100%; }

/* partners: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center; }

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

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; }

/* cta: card-style */
.cta-inner { background: var(--color-sidebar); color: #f4f7fb; border-radius: var(--radius-xl); padding: 3rem; text-align: center; box-shadow: none; }

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

/* 条件性装饰 */

/* 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: 1.9rem; --space-card: 0.95rem; --space-gap: 0.8rem; }
    .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; }
}