:root {
    --color-primary: #0f4c81;
    --color-primary-dark: #0a3557;
    --color-accent: #e8590c;
    --color-surface: #f8f9fa;
    --color-text: #1a1a2e;
    --rgb-primary: 15,76,129;
    --rgb-accent: 232,89,12;
    --radius-sm: 2px;
    --radius-md: 4px;
    --radius-lg: 6px;
    --radius-xl: 6px;
    --shadow-sm: none;
    --shadow-md: none;
    --shadow-lg: none;
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;
    --transition: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --heading-weight: 600;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: #f8f9fa; }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: #0a3557; }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
section:nth-child(odd), .section:nth-child(odd) { background-color: #f8f9fa; }
section:nth-child(even), .section:nth-child(even) { background-color: #eef1f5; }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); background-color: #ffffff; border: 2px solid #d1d9e6; border-left: 4px solid #0f4c81; }
.card:hover, [class*="card"]:hover { border-left-color: #e8590c; background-color: #fdf8f3; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background-color: #0f4c81; color: #ffffff; border: 2px solid #0f4c81; }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { background-color: #e8590c; border-color: #e8590c; color: #ffffff; }
a:not([class]) { color: #0f4c81; transition: var(--transition); }
a:not([class]):hover { color: #e8590c; }

/* ========== 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); }
                .news-grid .card:nth-child(3n) { border-left-color: #e8590c; background-color: #fdf8f3; }

/* features: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }
.feature-list > * { border: 2px solid #d1d9e6; border-top: 4px solid #0f4c81; border-radius: var(--radius-lg); padding: var(--space-card); background-color: #ffffff; }
.feature-list > *:nth-child(even) { border-top-color: #e8590c; background-color: #fdf8f3; }

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }
.hero-content h1 { color: #0a3557; border-left: 6px solid #e8590c; padding-left: 1rem; }

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list { display: flex; overflow: hidden; } 
                .testimonial-list > * { flex: 0 0 100%; border-left: 4px solid #0f4c81; background-color: #eef1f5; padding: var(--space-card); border-radius: var(--radius-lg); }

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }
.partner-grid > * { border: 2px solid #d1d9e6; border-radius: var(--radius-md); padding: 1rem 1.5rem; background-color: #ffffff; }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }
                .faq-wrapper > *:last-child { background-color: #0f4c81; color: #ffffff; border-radius: var(--radius-lg); padding: var(--space-card); }
                .faq-wrapper > *:last-child a { color: #e8590c; }

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; }
                .stats-grid > * { border-bottom: 3px solid #e8590c; padding-bottom: 0.5rem; }
                .stats-grid > *:nth-child(even) { border-bottom-color: #0f4c81; }

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; background-color: #0a3557; color: #ffffff; border-radius: var(--radius-lg); padding: 3rem 2rem; border: 3px solid #e8590c; }
.cta-inner h2, .cta-inner h3 { color: #ffffff; }
.cta-inner .btn, .cta-inner button[class*="btn"], .cta-inner a[class*="btn"] { background-color: #e8590c; border-color: #e8590c; }
.cta-inner .btn:hover, .cta-inner button[class*="btn"]:hover, .cta-inner a[class*="btn"]:hover { background-color: #ffffff; border-color: #ffffff; color: #0a3557; }

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

/* 条件性装饰 */
header, .header, .navbar { background: transparent; }
header, .header, .navbar { border-bottom: 3px solid #0f4c81; }

/* 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; }
}