:root {
    --color-primary: #5a4e42;
    --color-primary-dark: #2e261f;
    --color-accent: #b37a46;
    --color-surface: #fff9f0;
    --color-text: #362f28;
    --rgb-primary: 90,78,66;
    --rgb-accent: 179,122,70;
    --radius-sm: 3px;
    --radius-md: 5px;
    --radius-lg: 6px;
    --radius-xl: 8px;
    --shadow-sm: 0 1px 1.5px rgba(90,78,66,0.1), 0 1px 2px rgba(179,122,70,0.07);
    --shadow-md: 0 2px 4px rgba(90,78,66,0.12), 0 1px 3px rgba(179,122,70,0.08);
    --shadow-lg: 0 4px 8px rgba(90,78,66,0.15), 0 2px 6px rgba(179,122,70,0.1);
    --space-section: 1.5rem;
    --space-card: 1rem;
    --space-gap: 0.8rem;
    --transition: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --heading-weight: 700;
    --body-line-height: 1.65;
}

body { color: var(--color-text); line-height: var(--body-line-height); }
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-sm);
    padding: var(--space-card);
    transition: var(--transition);
    border-left-style: solid;
    border-left-color: rgba(90,78,66,0.3);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
}
a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
}

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

.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

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

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

.testimonial-list { display: flex; overflow: hidden; } 
.testimonial-list > * { flex: 0 0 100%; }

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

.faq-list { max-width: 800px; margin: 0 auto; }

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

.cta-section {
    background: linear-gradient(90deg, #5a4e42 0%, #2e261f 100%);
    color: #f7f1e7;
    padding: 4rem 2rem;
}

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

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); }
.hero, [class*="hero"], section:first-of-type {
    background: linear-gradient(135deg, #5a4e42, #2e261f);
}
.card {
    border-left-width: 3px;
    border-left-style: solid;
    border-left-color: rgba(90,78,66,0.4);
}

/* 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: 1.2rem;
        --space-card: 0.8rem;
        --space-gap: 0.6rem;
    }
    .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; }
}