:root {
    --color-primary: #6d28d9;
    --color-primary-dark: #4c1d95;
    --color-accent: #d4a017;
    --color-surface: #0f0f1a;
    --color-text: #e8e6f0;
    --rgb-primary: 109,40,217;
    --rgb-accent: 212,160,23;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --shadow-sm: 0 1px 3px rgba(15,15,26,.5), 0 1px 2px rgba(109,40,217,.15);
    --shadow-md: 0 6px 20px rgba(15,15,26,.55), 0 2px 8px rgba(109,40,217,.2);
    --shadow-lg: 0 24px 56px rgba(15,15,26,.65), 0 8px 24px rgba(212,160,23,.12);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    --heading-weight: 600;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: radial-gradient(circle at 50% 0%, #1a1a2e 0%, #0f0f1a 55%, #0a0a12 100%); }
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: var(--shadow-md); padding: var(--space-card); transition: var(--transition); background: linear-gradient(145deg, #1a1a2e 0%, #17172a 60%, #141424 100%); border: 1px solid transparent; border-image: linear-gradient(135deg, rgba(109,40,217,.5), rgba(212,160,23,.35), rgba(109,40,217,.2)) 1; }
.card:hover, [class*="card"]:hover { box-shadow: var(--shadow-lg); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, #6d28d9 0%, #4c1d95 100%); color: #f5f3ff; box-shadow: 0 4px 14px rgba(109,40,217,.35); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { background: linear-gradient(135deg, #7c3aed 0%, #5b21b6 100%); box-shadow: 0 8px 24px rgba(109,40,217,.5); }
a:not([class]) { color: var(--color-accent); transition: var(--transition); }

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

/* news: grid-3 */
/* 三列等宽网格 */
                .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* features: horizontal */
/* 水平滚动 */
                .feature-list { display: flex; gap: var(--space-gap); overflow-x: auto; scroll-snap-type: x mandatory; }
                .feature-list > * { flex: 0 0 300px; scroll-snap-align: start; }

/* hero: minimal */
.hero { padding: 2rem 0; background: radial-gradient(ellipse at 50% 30%, rgba(109,40,217,.18) 0%, rgba(15,15,26,0) 70%); } .hero-content { max-width: 560px; }

/* testimonials: grid-3 */
.testimonial-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }

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

/* cta: full-bg */
.cta-section { background: linear-gradient(135deg, #4c1d95 0%, #6d28d9 45%, #d4a017 100%); color: #f5f3ff; padding: 4rem 2rem; box-shadow: inset 0 0 80px rgba(15,15,26,.4); }

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

/* 条件性装饰 */
a:not([class]):hover { color: #f5c542; }
header, .header, .navbar { background: transparent; }

/* 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; }
}