:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #4c1d95;
    --color-accent: #a78bfa;
    --color-surface: #0f0b1a;
    --color-text: #e8e0f0;
    --rgb-primary: 124,58,237;
    --rgb-accent: 167,139,250;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 8px rgba(124,58,237,.15), 0 1px 3px rgba(0,0,0,.3);
    --shadow-md: 0 4px 16px rgba(124,58,237,.2), 0 2px 6px rgba(0,0,0,.35), 0 0 0 1px rgba(167,139,250,.1);
    --shadow-lg: 0 8px 32px rgba(124,58,237,.25), 0 4px 12px rgba(0,0,0,.4), 0 0 0 2px rgba(167,139,250,.08);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    --heading-weight: 800;
    --body-line-height: 1.6;
}

body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(135deg, #0f0b1a 0%, #1a1030 50%, #0f0b1a 100%); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); background: linear-gradient(180deg, rgba(124,58,237,.03) 0%, transparent 100%); }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); background: linear-gradient(135deg, rgba(124,58,237,.08) 0%, rgba(167,139,250,.04) 100%); border: 1px solid rgba(167,139,250,.15); backdrop-filter: blur(8px); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%); border: none; color: #fff; box-shadow: 0 4px 12px rgba(124,58,237,.3); }
a:not([class]) { color: var(--color-accent); transition: var(--transition); text-shadow: 0 0 20px rgba(167,139,250,.3); }

/* ========== 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; border-image: linear-gradient(135deg, rgba(167,139,250,.3), rgba(124,58,237,.1)) 1; border-radius: var(--radius-lg); }

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

/* hero: minimal */
.hero { padding: 2rem 0; background: radial-gradient(ellipse at 50% 0%, rgba(124,58,237,.1) 0%, transparent 70%); } .hero-content { max-width: 560px; }

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list { display: flex; overflow: hidden; } 
                .testimonial-list > * { flex: 0 0 100%; }

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

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

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

/* 条件性装饰 */
a:not([class]):hover { color: #c4b5fd; text-shadow: 0 0 30px rgba(196,181,253,.5); }
.card { border: 1px solid rgba(var(--rgb-accent), .15); border-image: linear-gradient(135deg, rgba(167,139,250,.3), rgba(124,58,237,.1)) 1; border-radius: var(--radius-lg); }
.card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); border-color: rgba(167,139,250,.3); }
header, .header, .navbar { background: linear-gradient(180deg, rgba(15,11,26,.95) 0%, rgba(15,11,26,.8) 100%); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(167,139,250,.1); }

/* 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; }
}