:root {
    --color-primary: #1f4f46;
    --color-primary-dark: #163a33;
    --color-accent: #c96f3b;
    --color-surface: #f6f0e4;
    --color-text: #1e2a28;
    --rgb-primary: 31,79,70;
    --rgb-accent: 201,111,59;
    --radius-sm: 2px;
    --radius-md: 4px;
    --radius-lg: 6px;
    --radius-xl: 6px;
    --shadow-sm: none;
    --shadow-md: none;
    --shadow-lg: none;
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.18s linear;
    --heading-weight: 600;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: #ffffff; caret-color: var(--color-accent); accent-color: var(--color-primary); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: var(--color-primary-dark); text-shadow: none; }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); background: #ffffff; border-top: 1px solid #d8d0c1; border-bottom: 1px solid #d8d0c1; }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); background: #f6f0e4; border-color: #cbbda4; border-style: solid; color: var(--color-text); filter: none; opacity: 1; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: var(--color-primary); color: #ffffff; border-color: #163a33; border-style: solid; box-shadow: none; text-shadow: none; }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { background: var(--color-primary-dark); color: #ffffff; border-color: #102b26; }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration-color: #c96f3b; }
a:not([class]):hover { color: var(--color-accent); }
a:not([class]):focus { outline: 1px dashed #c96f3b; outline-color: #c96f3b; }

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

/* news: grid-3 */
/* 三列等宽网格 */
                .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* features: grid-3 */
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* hero: minimal */
.hero { padding: 2rem 0; background: #ffffff; border-top: 1px solid #dcd6ca; border-bottom: 1px solid #dcd6ca; } .hero-content { max-width: 560px; }

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list { display: flex; overflow: hidden; background: #f6f0e4; border-top: 1px solid #cfc3ab; border-bottom: 1px solid #cfc3ab; } 
                .testimonial-list > * { flex: 0 0 100%; background: #f6f0e4; }

/* partners: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center; background: #1f2a28; color: #f6f0e4; border-top: 1px solid #33413e; border-bottom: 1px solid #33413e; }

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

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; background: #f6f0e4; border-top: 1px solid #cfc3ab; border-bottom: 1px solid #cfc3ab; color: #1e2a28; }

/* cta: full-bg */
.cta-section { background: #1f4f46; color: #fffdf8; padding: 4rem 2rem; border-top: 1px solid #163a33; border-bottom: 1px solid #163a33; }

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

/* 条件性装饰 */
.card { border: 1px solid #cbbda4; }
header, .header, .navbar { box-shadow: none; background: #ffffff; border-bottom: 1px solid #d8d0c1; backdrop-filter: none; }

/* 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; }
}