:root {
    --color-primary: #87a878;
    --color-primary-dark: #5d7a58;
    --color-accent: #c47b5a;
    --color-surface: #faf8f3;
    --color-text: #2d2d2d;
    --rgb-primary: 135,168,120;
    --rgb-accent: 196,123,90;
    --radius-sm: 14px;
    --radius-md: 18px;
    --radius-lg: 22px;
    --radius-xl: 26px;
    --shadow-sm:
        0 1px 0 rgba(45,45,45,0.06),
        0 6px 18px rgba(135,168,120,0.10);
    --shadow-md:
        0 2px 0 rgba(45,45,45,0.06),
        0 10px 26px rgba(135,168,120,0.14),
        0 2px 10px rgba(196,123,90,0.10);
    --shadow-lg:
        0 3px 0 rgba(45,45,45,0.06),
        0 18px 50px rgba(135,168,120,0.18),
        0 8px 18px rgba(196,123,90,0.10);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 280ms cubic-bezier(.2,.8,.2,1);
    --heading-weight: 800;
    --body-line-height: 1.6;
}

body { 
    color: var(--color-text);
    line-height: var(--body-line-height);
    background:
        radial-gradient(1200px 700px at 15% 0%, rgba(135,168,120,0.10) 0%, rgba(250,248,243,0) 55%),
        radial-gradient(900px 600px at 90% 10%, rgba(196,123,90,0.10) 0%, rgba(250,248,243,0) 55%),
        var(--color-surface);
    caret-color: var(--color-primary-dark);
    accent-color: var(--color-primary-dark);
}

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:
        0 2px 0 rgba(45,45,45,0.05),
        0 10px 22px rgba(135,168,120,0.12),
        0 6px 18px rgba(45,45,45,0.06),
        inset 0 1px 0 rgba(255,255,255,0.7);
    padding: var(--space-card); 
    transition: box-shadow var(--transition), transform var(--transition), border-left-color var(--transition), background var(--transition);
    background:
        linear-gradient(180deg, rgba(255,255,255,0.88) 0%, rgba(250,248,243,0.92) 100%);
    border: 1px solid rgba(45,45,45,0.06);
}

.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
}

a:not([class]) { 
    color: var(--color-primary-dark); 
    transition: color var(--transition), text-shadow var(--transition);
    text-shadow: 0 0 0 rgba(0,0,0,0);
}

h1, h2, h3, h4 {
    text-shadow: 0 1px 0 rgba(255,255,255,0.75);
}

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

/* news: masonry-2 */
/* 两列瀑布流 */
                .news-grid { column-count: 2; column-gap: var(--space-gap); }
                .news-grid .card { break-inside: avoid; margin-bottom: var(--space-gap); }

/* 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; } 
                .testimonial-list > * { flex: 0 0 100%; }

/* partners: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 20s linear infinite; }
                @keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

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

/* stats: big-number */
/* 大数字居中 */
                .stats-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }
                .stats-grid .stat-value { font-size: 3rem; text-shadow: 0 1px 0 rgba(255,255,255,0.75); }

/* cta: full-bg */
.cta-section { 
    background:
        radial-gradient(900px 420px at 15% 30%, rgba(255,255,255,0.20) 0%, rgba(255,255,255,0) 60%),
        linear-gradient(135deg, var(--color-primary) 0%, #6f9360 45%, #5b8255 100%);
    color: #fbfbf7; 
    padding: 4rem 2rem;
    box-shadow:
        0 18px 60px rgba(135,168,120,0.20),
        0 6px 18px rgba(0,0,0,0.10),
        inset 0 1px 0 rgba(255,255,255,0.25);
    border-top-left-radius: var(--radius-xl);
    border-top-right-radius: var(--radius-xl);
    border-bottom-left-radius: var(--radius-xl);
    border-bottom-right-radius: var(--radius-xl);
}

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

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 10px 22px rgba(196,123,90,0.28); }

.card { border-left: 3px solid var(--color-primary-dark); }

@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; }
}