:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #4c1d95;
    --color-accent: #f5c842;
    --color-surface: #0f0f1a;
    --color-text: #ede9fe;
    --rgb-primary: 124,58,237;
    --rgb-accent: 245,200,66;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 20px;
    --radius-xl: 32px;
    --shadow-sm: 0 2px 6px rgba(124,58,237,.18), 0 1px 2px rgba(15,15,26,.4);
    --shadow-md: 0 6px 18px rgba(124,58,237,.22), 0 2px 6px rgba(15,15,26,.5), 0 0 0 1px rgba(245,200,66,.08);
    --shadow-lg: 0 14px 34px rgba(124,58,237,.32), 0 6px 14px rgba(15,15,26,.6), 0 0 0 1px rgba(245,200,66,.14);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.5s cubic-bezier(.22,.61,.36,1);
    --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%, #1a1030 0%, #0f0f1a 55%, #0a0a14 100%); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: #faf5ff; text-shadow: 0 1px 0 rgba(245,200,66,.12), 0 0 24px rgba(124,58,237,.35); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); background: linear-gradient(180deg, rgba(124,58,237,.06) 0%, rgba(15,15,26,0) 40%, rgba(245,200,66,.04) 100%); }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); background: linear-gradient(145deg, rgba(124,58,237,.14) 0%, rgba(30,20,55,.9) 45%, rgba(15,15,26,.95) 100%); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, #7c3aed 0%, #a855f7 50%, #f5c842 100%); color: #0f0f1a; box-shadow: 0 4px 14px rgba(124,58,237,.4), inset 0 1px 0 rgba(255,255,255,.2); }
a:not([class]) { color: var(--color-accent); transition: var(--transition); text-shadow: 0 0 12px rgba(245,200,66,.4); }

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

/* hero: split */
/* 左文右图 */
                .hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center; }

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

/* partners: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 20s linear infinite; }
                @keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

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

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: full-bg */
.cta-section { background: linear-gradient(135deg, #4c1d95 0%, #7c3aed 45%, #f5c842 100%); color: #0f0f1a; padding: 4rem 2rem; box-shadow: inset 0 0 80px rgba(15,15,26,.5), 0 0 60px rgba(124,58,237,.3); }

/* 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(-4px); box-shadow: var(--shadow-lg); }
.card { border: 1px solid rgba(var(--rgb-accent), .14); }
header, .header, .navbar { box-shadow: 0 4px 20px rgba(124,58,237,.3), 0 1px 0 rgba(245,200,66,.15); background: linear-gradient(180deg, rgba(26,16,48,.95) 0%, rgba(15,15,26,.9) 100%); backdrop-filter: blur(10px); }

/* 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; }
}