:root {
    --color-primary: #587052;
    --color-primary-dark: #44503f;
    --color-accent: #8a9a7b;
    --color-surface: #faf8f3;
    --color-text: #2d2d2d;
    --rgb-primary: 88,112,82;
    --rgb-accent: 138,154,123;
    --radius-sm: 3px;
    --radius-md: 5px;
    --radius-lg: 6px;
    --radius-xl: 6px;
    --shadow-sm: 0 1px 2px rgba(45, 45, 45, 0.06), 0 1px 3px rgba(45, 45, 45, 0.1);
    --shadow-md: 0 2px 4px rgba(45, 45, 45, 0.08), 0 4px 6px rgba(45, 45, 45, 0.1);
    --shadow-lg: 0 4px 8px rgba(45, 45, 45, 0.1), 0 6px 12px rgba(45, 45, 45, 0.12);
    --space-section: 2.5rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.25s cubic-bezier(0.3, 0, 0.4, 1);
    --heading-weight: 800;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
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-md); box-shadow: var(--shadow-sm); padding: var(--space-card); transition: var(--transition); border: 1px solid rgba(var(--rgb-primary), 0.1); background-color: var(--color-surface); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-sm); transition: var(--transition); background-color: var(--color-accent); color: var(--color-surface); border: 1px solid transparent; box-shadow: 0 1px 2px rgba(138, 154, 123, 0.3); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration: none; }
a:not([class]):hover,
a:not([class]):focus { text-decoration: underline; }

/* ========== 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: centered */
/* 居中大卡片 */
.feature-list { display: flex; flex-direction: column; align-items: center; gap: calc(var(--space-gap) * 1.5); max-width: 720px; margin: 0 auto; }

/* hero: minimal */
.hero { padding: 2rem 0; background: linear-gradient(135deg, #587052, #44503f); }
.hero-content { max-width: 560px; color: var(--color-surface); text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4); }

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
.testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); box-shadow: var(--shadow-sm); border-radius: var(--radius-sm); border: 1px solid rgba(var(--rgb-primary), 0.12); background-color: var(--color-surface); }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
.faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }

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

/* cta: full-bg */
.cta-section { background: var(--color-primary); color: var(--color-surface); padding: 4rem 2rem; box-shadow: inset 0 0 20px rgba(45, 45, 45, 0.15); border-radius: var(--radius-md); }

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

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #587052, #44503f); }
.card { border: 1px solid rgba(var(--rgb-primary), 0.1); }
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: 1.6rem; --space-card: 0.9rem; --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; }
}