/* CSSVariantEngine v3.0 — go-c7h5.com.cn */
/* Palette: slate-dashboard | Radius: medium-glow | Shadow: accent-halo */
/* Spacing: dense | Transition: smooth-glow */
/* Section layouts: {"news":"list-view","features":"grid-4","hero":"minimal","testimonials":"stacked","partners":"scroll","faq":"single-column","stats":"inline","cta":"split"} */

:root {
    --color-primary: #334155;
    --color-primary-dark: #1e293b;
    --color-accent: #3b82f6;
    --color-surface: #ffffff;
    --color-text: #f1f5f9;
    --rgb-primary: 51,65,85;
    --rgb-accent: 59,130,246;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --shadow-sm: 0 0 12px rgba(var(--rgb-accent),.2);
    --shadow-md: 0 0 24px rgba(var(--rgb-accent),.4);
    --shadow-lg: 0 0 32px rgba(var(--rgb-accent),.6);
    --space-section: 1.75rem;
    --space-card: 12px;
    --space-gap: 10px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --heading-weight: 800;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body { background-color: var(--color-primary-dark); 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"] { background-color: var(--color-surface); color: var(--color-primary-dark); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); padding: var(--space-card); transition: var(--transition); animation: softPulse 3.5s ease-in-out infinite; }
.btn, button[class*="btn"], a[class*="btn"] { background-color: var(--color-accent); color: white; border-radius: var(--radius-md); transition: var(--transition); box-shadow: var(--shadow-sm); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { box-shadow: var(--shadow-lg); }
a:not([class]) { color: var(--color-accent); transition: var(--transition); }

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

/* news: list-view */
/* 列表模式 (图左文右) */
                .news-grid { display: flex; flex-direction: column; gap: var(--space-gap); }
                .news-grid .card { display: grid; grid-template-columns: 280px 1fr; }

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

/* hero: minimal */
.hero { padding: 2rem 0; } .hero-content { max-width: 560px; }

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

/* partners: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 18s linear infinite; }
                @keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
                @keyframes softPulse { 0%, 100% { filter: brightness(1); } 50% { filter: brightness(1.03); } }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }

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

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); animation-play-state: paused; }
.card { border: 1px solid rgba(var(--rgb-accent), .15); }
header, .header, .navbar { background-color: var(--color-primary); box-shadow: 0 2px 16px rgba(0,0,0,.4); }

/* 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: 1.75rem; --space-card: 12px; --space-gap: 10px; }
    .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; }
}