:root {
    --color-primary: #3a5a40;
    --color-primary-dark: #2b4330;
    --color-accent: #a0d8b3;
    --color-surface: #fffaf0;
    --color-text: #1f2f22;
    --rgb-primary: 58,90,64;
    --rgb-accent: 160,216,179;
    --radius-sm: 6px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-xl: 28px;
    --shadow-sm: 0 4px 12px rgba(58,90,64,0.14), 0 1px 3px rgba(58,90,64,0.06);
    --shadow-md: 0 8px 24px rgba(43,67,48,0.18), 0 4px 8px rgba(58,90,64,0.08);
    --shadow-lg: 0 14px 40px rgba(43,67,48,0.22), 0 8px 16px rgba(58,90,64,0.12);
    --space-section: 6.5rem;
    --space-card: 2.4rem;
    --space-gap: 1.8rem;
    --transition: 0.45s cubic-bezier(0.33, 1, 0.68, 1);
    --heading-weight: 800;
    --body-line-height: 1.7;
}

body { 
    color: var(--color-text); 
    line-height: var(--body-line-height); 
    text-shadow: 0 1px 2px rgba(31,47,34,0.1);
}
h1, h2, h3, h4 { 
    font-weight: var(--heading-weight); 
    text-shadow: 0 1px 3px rgba(31,47,34,0.15);
}
section, .section { 
    padding-top: var(--space-section); 
    padding-bottom: var(--space-section); 
    background: linear-gradient(90deg, #fffaf0 0%, #fef6e4 50%, #e8f5e9 50%, #f1f9f3 100%);
}

.card, [class*="card"] { 
    border-radius: var(--radius-lg); 
    box-shadow: 
        0 6px 14px rgba(58,90,64,0.16), 
        0 2px 6px rgba(160,216,179,0.12), 
        inset 0 0 8px rgba(255,255,255,0.15);
    padding: var(--space-card); 
    transition: var(--transition);
    border-left: 4px double var(--color-primary-dark);
    background: #fbfff7;
}

.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: var(--transition);
    background: linear-gradient(135deg, #a0d8b3 0%, #3a5a40 100%);
    color: #f9faf8;
    box-shadow:
        0 4px 8px rgba(58,90,64,0.3),
        0 1px 3px rgba(58,90,64,0.2);
    border-style: solid;
    border-color: #2b4330;
}

a:not([class]) { 
    color: var(--color-primary-dark); 
    transition: var(--transition);
    text-shadow: 0 1px 2px rgba(43,67,48,0.25);
    outline-color: #a0d8b3;
    caret-color: #3a5a40;
}

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

/* news: grid-4 */
.news-grid { 
    display: grid; 
    grid-template-columns: repeat(4, 1fr); 
    gap: calc(var(--space-gap) * 0.8); 
}

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

/* hero: split */
.hero-inner { 
    display: grid; 
    grid-template-columns: 1fr 1fr; 
    gap: 2rem; 
    align-items: center; 
}

/* testimonials: carousel */
.testimonial-list { 
    display: flex; 
    overflow: hidden; 
    filter: drop-shadow(0 6px 8px rgba(58,90,64,0.12));
}
.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: two-column */
.faq-list { 
    display: grid; 
    grid-template-columns: 1fr 1fr; 
    gap: var(--space-gap); 
}

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

/* cta: card-style */
.cta-inner { 
    background: var(--color-surface); 
    border-radius: var(--radius-xl); 
    padding: 3rem; 
    text-align: center; 
    box-shadow:
        0 10px 20px rgba(43,67,48,0.18),
        inset 0 0 12px rgba(160,216,179,0.15);
}

/* Page Layout: narrow-centered */
.page-main { 
    max-width: 860px; 
    margin: 0 auto; 
}

/* 条件性装饰 */
.card { 
    border-left: 4px double var(--color-primary-dark); 
}
header, .header, .navbar { 
    background: transparent; 
}

/* 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: 3rem; 
        --space-card: 1.3rem; 
        --space-gap: 0.9rem; 
    }
    .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; 
    }
}