:root {
    --color-primary: #1d4e89;
    --color-primary-dark: #143a66;
    --color-accent: #f2a541;
    --color-surface: #eef5fb;
    --color-text: #10233a;
    --rgb-primary: 29,78,137;
    --rgb-accent: 242,165,65;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --shadow-sm: 0 0 10px rgba(242,165,65,.16), 0 1px 2px rgba(16,35,58,.08);
    --shadow-md: 0 0 18px rgba(242,165,65,.22), 0 4px 12px rgba(16,35,58,.10);
    --shadow-lg: 0 0 30px rgba(242,165,65,.32), 0 10px 26px rgba(16,35,58,.14);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.35s cubic-bezier(.22,.61,.36,1);
    --heading-weight: 700;
    --body-line-height: 1.6;
    accent-color: var(--color-accent);
    caret-color: var(--color-primary);
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: var(--color-surface); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 0 22px rgba(242,165,65,.28); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); }
.card:hover, [class*="card"]:hover { box-shadow: var(--shadow-lg); border-color: rgba(242,165,65,.55); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); box-shadow: 0 0 14px rgba(242,165,65,.24); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { box-shadow: 0 0 32px rgba(242,165,65,.60); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

/* ========== 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: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }

/* testimonials: stacked */
/* 垂直堆叠 */
                .testimonial-list { display: flex; flex-direction: column; gap: var(--space-gap); max-width: 720px; margin: 0 auto; }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; filter: saturate(.92) hue-rotate(-6deg); }

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

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

/* cta: full-bg */
.cta-section { background: linear-gradient(135deg, #143a66 0%, #1d4e89 55%, #2b6ca3 100%); color: #fdf6ec; padding: 4rem 2rem; box-shadow: 0 0 34px rgba(242,165,65,.30); animation: glowPulse 4.5s ease-in-out infinite; }

/* Page Layout: narrow-centered */
/* 窄版居中 */
            .page-main { max-width: 860px; margin: 0 auto; }

/* 条件性装饰 */
header, .header, .navbar { background: rgba(238,245,251,.88); backdrop-filter: blur(10px); box-shadow: 0 0 22px rgba(29,78,137,.12); }

@keyframes glowPulse {
    0%, 100% { box-shadow: 0 0 22px rgba(242,165,65,.22); }
    50% { box-shadow: 0 0 44px rgba(242,165,65,.48); }
}

/* 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; }
}