:root {
    --color-primary: #c47b5a;
    --color-primary-dark: #7a3f28;
    --color-accent: #87a878;
    --color-surface: #faf8f3;
    --color-text: #2d2d2d;
    --rgb-primary: 196,123,90;
    --rgb-accent: 135,168,120;
    --radius-sm: 2px;
    --radius-md: 3px;
    --radius-lg: 4px;
    --radius-xl: 0px;
    --shadow-sm: 4px 4px 0 rgba(196,123,90,.35), 0 0 0 2px rgba(45,45,45,.06);
    --shadow-md: 4px 4px 0 rgba(45,45,45,.18), 6px 6px 0 rgba(196,123,90,.12);
    --shadow-lg: 4px 4px 0 rgba(45,45,45,.26), 8px 8px 0 rgba(196,123,90,.18), 0 10px 22px rgba(0,0,0,.08);
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;
    --transition: 0.15s cubic-bezier(.2,.9,.2,1);
    --heading-weight: 650;
    --body-line-height: 1.7;
}

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: 2px; box-shadow: var(--shadow-md); padding: var(--space-card); transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background-color var(--transition), color var(--transition); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: background-color var(--transition), border-color var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition); }
a:not([class]) { color: var(--color-primary); transition: color var(--transition), text-decoration-color var(--transition), background-color var(--transition), box-shadow var(--transition); }

:root { caret-color: var(--color-accent); accent-color: var(--color-accent); }

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

/* news: featured-left */
/* 左大右小 (1大+2小) */
                .news-grid { display: grid; grid-template-columns: 2fr 1fr; grid-template-rows: auto auto; gap: var(--space-gap); }
                .news-grid > *:first-child { grid-row: span 2; }

/* features: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 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; } 
                .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: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: card-style */
.cta-inner { background: linear-gradient(180deg, rgba(250,248,243,1) 0%, rgba(250,248,243,.92) 100%); border-radius: 0px; padding: 3rem; text-align: center; border: 3px solid rgba(var(--rgb-accent), .22); box-shadow: 4px 4px 0 rgba(45,45,45,.16), 0 12px 26px rgba(0,0,0,.06); }

/* Page Layout: narrow-centered */
/* 窄版居中 */
            .page-main { max-width: 760px; margin: 0 auto; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-4px); box-shadow: 4px 4px 0 rgba(45,45,45,.26), 8px 8px 0 rgba(135,168,120,.20), 0 16px 38px rgba(0,0,0,.10); border-color: rgba(var(--rgb-primary), .32); }
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 1px 0 rgba(0,0,0,.06); }
.card { border: 2px solid rgba(var(--rgb-primary), .18); background-image: linear-gradient(180deg, rgba(250,248,243,.96) 0%, rgba(250,248,243,.86) 100%); }

/* 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; }
}