:root {
    --color-primary: #4c1d95;
    --color-primary-dark: #0f0f1a;
    --color-accent: #d4af37;
    --color-surface: #1a1a2e;
    --color-text: #f0eef6;
    --rgb-primary: 76,29,149;
    --rgb-accent: 212,175,55;
    --radius-sm: 4px;
    --radius-md: 10px;
    --radius-lg: 20px;
    --radius-xl: 32px;
    --shadow-sm: 0 2px 6px rgba(15,15,26,.35), 0 0 0 1px rgba(212,175,55,.06);
    --shadow-md: 0 6px 20px rgba(15,15,26,.40), 0 2px 8px rgba(76,29,149,.18);
    --shadow-lg: 0 16px 48px rgba(15,15,26,.50), 0 4px 16px rgba(212,175,55,.12), 0 0 0 1px rgba(212,175,55,.08);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.5s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 600;
    --body-line-height: 1.75;
}

body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(160deg, #0f0f1a 0%, #1a1a2e 45%, #16213e 100%); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 2px 12px rgba(212,175,55,.15); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); background: radial-gradient(ellipse at 50% 0%, rgba(76,29,149,.18) 0%, transparent 70%); }
.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%, #16213e 60%, #1e1e3a 100%); border: 1px solid transparent; border-image: linear-gradient(135deg, rgba(212,175,55,.25), rgba(76,29,149,.20), rgba(212,175,55,.10)) 1; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, #4c1d95 0%, #6d28d9 50%, #7c3aed 100%); color: #f0eef6; border: 1px solid rgba(212,175,55,.20); box-shadow: 0 4px 16px rgba(76,29,149,.35), inset 0 1px 0 rgba(255,255,255,.08); }
a:not([class]) { color: var(--color-accent); transition: var(--transition); text-decoration-color: rgba(212,175,55,.40); }

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

/* news: featured-top */
/* 首篇横跨全宽 */
                .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
                .news-grid > *:first-child { grid-column: span 3; background: linear-gradient(120deg, #1a1a2e 0%, #2d1b69 50%, #1a1a2e 100%); border-radius: var(--radius-xl); box-shadow: 0 12px 40px rgba(15,15,26,.45), 0 0 0 1px rgba(212,175,55,.10); }

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

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }

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

/* partners: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 20s linear infinite; background: linear-gradient(90deg, transparent 0%, rgba(76,29,149,.12) 50%, transparent 100%); }
                @keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* 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; background: radial-gradient(ellipse at center, rgba(76,29,149,.22) 0%, rgba(15,15,26,.60) 100%); border-radius: var(--radius-xl); box-shadow: 0 20px 60px rgba(15,15,26,.50), 0 0 40px rgba(212,175,55,.08); }

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-4px); box-shadow: 0 20px 56px rgba(15,15,26,.55), 0 0 32px rgba(212,175,55,.15), 0 0 0 1px rgba(212,175,55,.15); }
a:not([class]):hover { color: #f5d76e; text-shadow: 0 0 12px rgba(212,175,55,.45); }

/* 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; }
}