:root {
    --color-primary: #134e4a;
    --color-primary-dark: #0b2a2c;
    --color-accent: #f59e0b;
    --color-surface: #fff4e6;
    --color-text: #0f172a;
    --rgb-primary: 19,78,74;
    --rgb-accent: 245,158,11;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 22px;
    --shadow-sm: 0 1px 0 rgba(2, 44, 44, .10), 0 6px 18px rgba(2, 44, 44, .12);
    --shadow-md: 0 2px 0 rgba(11, 42, 44, .08), 0 10px 30px rgba(1, 22, 22, .18), 0 2px 6px rgba(245, 158, 11, .10);
    --shadow-lg: 0 3px 0 rgba(11, 42, 44, .10), 0 18px 50px rgba(1, 22, 22, .22), 0 6px 18px rgba(19, 78, 74, .16);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.52s cubic-bezier(.2, .85, .25, 1);
    --heading-weight: 700;
    --body-line-height: 1.65;
}

/* 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-lg);
    box-shadow: 0 1px 0 rgba(255,255,255,.65), 0 2px 0 rgba(0,0,0,.02), 0 14px 40px rgba(1, 22, 22, .18), 0 6px 18px rgba(245, 158, 11, .10);
    padding: var(--space-card);
    transition: var(--transition);
    background: linear-gradient(180deg, rgba(255,255,255,.85), rgba(255,255,255,.72));
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    text-shadow: 0 1px 0 rgba(255,255,255,.55);
}
a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
    text-shadow: 0 1px 0 rgba(255,255,255,.45);
}

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

/* news: grid-4 */
/* 四列紧凑网格 */
                .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 0.8); }

/* features: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }

/* hero: centered */
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
                .testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }

/* 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: 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, #073b3a 0%, #134e4a 35%, #0b2a2c 70%, #063033 100%);
    color: #ffffff;
    padding: 4rem 2rem;
    box-shadow: inset 0 1px 0 rgba(255,255,255,.08), inset 0 0 0 1px rgba(245, 158, 11, .10);
}

/* 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 0 18px rgba(245, 158, 11, .35); }
.hero, [class*="hero"], section:first-of-type {
    background:
        linear-gradient(180deg, rgba(255,255,255,.40), rgba(255,255,255,.00)),
        linear-gradient(135deg, #ffffff 0%, #fff4e6 26%, #134e4a 58%, #0b2a2c 100%);
    box-shadow: inset 0 1px 0 rgba(255,255,255,.55), inset 0 -1px 0 rgba(0,0,0,.05);
}
.card { border-left: 4px solid var(--color-primary); background-clip: padding-box; }

/* 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; }
}