:root {
    --color-primary: #0b6b5b;
    --color-primary-dark: #064e42;
    --color-accent: #e2863c;
    --color-surface: #fbf6ea;
    --color-text: #1d2b27;
    --rgb-primary: 11,107,91;
    --rgb-accent: 226,134,60;
    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --shadow-sm: 0 2px 6px rgba(18,33,29,.05), 0 10px 20px -8px rgba(18,33,29,.08);
    --shadow-md: 0 4px 8px rgba(18,33,29,.05), 0 20px 40px -10px rgba(18,33,29,.12);
    --shadow-lg: 0 6px 14px rgba(18,33,29,.06), 0 34px 64px -18px rgba(18,33,29,.18);
    --space-section: 3.5rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.42s cubic-bezier(0.22, 0.61, 0.36, 1);
    --heading-weight: 700;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: #fdfaf3; }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: #12211d; }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
section:nth-of-type(odd), .section:nth-of-type(odd) { background: #ffffff; }
section:nth-of-type(even), .section:nth-of-type(even) { background: var(--color-surface); }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: 0 4px 8px rgba(18,33,29,.05), 0 20px 40px -10px rgba(18,33,29,.12), inset 0 0 0 1px rgba(11,107,91,.07); padding: var(--space-card); transition: var(--transition); background: #ffffff; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); box-shadow: 0 2px 6px rgba(11,107,91,.14), 0 14px 28px -12px rgba(11,107,91,.30); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration-color: rgba(226,134,60,.55); }
a:not([class]):hover { color: var(--color-accent); }

/* ========== 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: horizontal */
/* 水平滚动 */
                .feature-list { display: flex; gap: var(--space-gap); overflow-x: auto; scroll-snap-type: x mandatory; }
                .feature-list > * { flex: 0 0 300px; scroll-snap-align: start; }

/* hero: minimal */
.hero { padding: 2rem 0; background: linear-gradient(180deg, #fbf6ea 0%, #f4efe2 100%); } .hero-content { max-width: 560px; }

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list { display: flex; overflow: hidden; } 
                .testimonial-list > * { flex: 0 0 100%; }

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }

/* 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: full-bg */
.cta-section { background: linear-gradient(135deg, #064e42 0%, #0b6b5b 58%, #12907a 100%); color: #fff; padding: 4rem 2rem; box-shadow: 0 6px 14px rgba(6,78,66,.10), 0 34px 64px -18px rgba(6,78,66,.28); border-radius: var(--radius-xl); }

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

/* 条件性装饰 */
header, .header, .navbar { background: transparent; backdrop-filter: saturate(140%) blur(6px); }

/* 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; }
}