:root {
    --color-primary: #4c1d95;
    --color-primary-dark: #3b0764;
    --color-accent: #fbbf24;
    --color-surface: #fff9ec;
    --color-text: #e2e8f0;
    --rgb-primary: 76,29,149;
    --rgb-accent: 251,191,36;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --shadow-sm: 0 0 8px rgba(251,191,36,0.25);
    --shadow-md: 0 0 16px rgba(251,191,36,0.4);
    --shadow-lg: 0 0 32px rgba(251,191,36,0.55);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.4s ease-in-out;
    --heading-weight: 600;
    --body-line-height: 1.6;
}

body { color: var(--color-text); line-height: var(--body-line-height); background-color: #0f0f1a; }
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: 0 0 16px rgba(251,191,36,0.3); padding: var(--space-card); transition: var(--transition); background-color: #1e1e2e; border-left: 3px solid var(--color-accent); }
.card:hover { box-shadow: 0 0 24px rgba(251,191,36,0.6), 0 0 48px rgba(251,191,36,0.2); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); }
a:not([class]) { color: var(--color-accent); transition: var(--transition); }

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

/* news: grid-4 */
.news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 0.8); }

/* features: centered */
.feature-list { display: flex; flex-direction: column; align-items: center; gap: calc(var(--space-gap) * 2); max-width: 720px; margin: 0 auto; }

/* hero: overlay */
.hero { position: relative; min-height: 70vh; display: flex; align-items: center; background: linear-gradient(135deg, #4c1d95, #3b0764, #1a0a2e); animation: pulse-glow 4s ease-in-out infinite; }
.hero-content { position: relative; z-index: 1; }

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

/* partners: scroll */
.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: inline */
.stats-grid { display: flex; justify-content: center; gap: 3rem; }

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

/* Page Layout: narrow-centered */
.page-main { max-width: 860px; margin: 0 auto; }

/* 条件性装饰 */
a:not([class]):hover { color: #d97706; }
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #4c1d95, #3b0764); }
.card { border-left: 3px solid var(--color-accent); }
header, .header, .navbar { background: transparent; }

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 16px rgba(251,191,36,0.3); }
    50% { box-shadow: 0 0 40px rgba(251,191,36,0.7); }
}

/* 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; }
}