:/* CSSVariantEngine v3.0 — do-top-kaiyun.com */
/* Palette: ocean-dusk | Radius: generous | Shadow: layered */
/* Spacing: balanced | Transition: long */
/* Section layouts: {"news":"featured-top","features":"grid-3","hero":"centered","testimonials":"stacked","partners":"grid-4","faq":"two-column","stats":"inline","cta":"centered"} */

:root {
    --color-primary: #2a6f97;
    --color-primary-dark: #1b4965;
    --color-accent: #62b6cb;
    --color-surface: #cae9ff;
    --color-text: #03045e;
    --rgb-primary: 42,111,151;
    --rgb-accent: 98,182,203;
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 28px;
    --radius-xl: 36px;
    --shadow-sm: 0 2px 8px rgba(3, 4, 94, 0.06), 0 1px 3px rgba(3, 4, 94, 0.04);
    --shadow-md: 0 8px 24px rgba(3, 4, 94, 0.08), 0 3px 8px rgba(3, 4, 94, 0.06);
    --shadow-lg: 0 12px 32px rgba(3, 4, 94, 0.12), 0 4px 12px rgba(3, 4, 94, 0.08);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.5s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 700;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(180deg, #ffffff 0%, #e0fbfc 40%, #ffffff 100%); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: #1b4965; }
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); background: linear-gradient(145deg, #ffffff 0%, #f0f8ff 100%); }
.card:hover, [class*="card"]:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, #2a6f97 0%, #1b4965 100%); color: #ffffff; border: none; box-shadow: 0 4px 12px rgba(42, 111, 151, 0.3); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { box-shadow: 0 6px 20px rgba(42, 111, 151, 0.4); transform: translateY(-2px); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration: none; border-bottom: 2px solid transparent; }
a:not([class]):hover { color: var(--color-accent); border-bottom-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: grid-3 */
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

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

/* 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; }

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

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; }

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
            .page-main { max-width: 1200px; margin: 0 auto; }

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #1b4965 0%, #2a6f97 35%, #62b6cb 70%, #cae9ff 100%); }
.hero { border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); }
.card { border-left: 4px solid transparent; border-image: linear-gradient(180deg, #2a6f97, #62b6cb) 1; }
.card:hover { border-left-color: #62b6cb; }

/* 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; }
}