:root {
    --color-primary: #5b21b6;
    --color-primary-dark: #2e1065;
    --color-accent: #22d3ee;
    --color-surface: #eef2ff;
    --color-text: #0b1020;
    --rgb-primary: 91,33,182;
    --rgb-accent: 34,211,238;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --shadow-sm: 0 1px 2px rgba(46,16,101,.20), 0 0 12px rgba(var(--rgb-accent), .18);
    --shadow-md: 0 6px 18px -6px rgba(46,16,101,.38), 0 0 24px rgba(var(--rgb-accent), .28);
    --shadow-lg: 0 20px 44px -14px rgba(46,16,101,.48), 0 0 34px rgba(var(--rgb-accent), .34);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.3s cubic-bezier(.34,.08,.2,1);
    --heading-weight: 800;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); }
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); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); }
.card:hover, [class*="card"]:hover { box-shadow: 0 10px 28px -8px rgba(46,16,101,.45), 0 0 32px rgba(var(--rgb-accent), .55); border-color: rgba(var(--rgb-accent), .55); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { box-shadow: 0 0 26px rgba(var(--rgb-accent), .6), 0 4px 14px -4px rgba(46,16,101,.45); border-color: rgba(var(--rgb-accent), .7); }
a:not([class]):hover { color: var(--color-accent); }

/* ========== 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: minimal */
.hero { padding: 2rem 0; } .hero-content { max-width: 560px; }

/* 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; }
                @keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }

/* stats: big-number */
/* 大数字居中 */
                .stats-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }
                .stats-grid .stat-value { font-size: 3rem; color: var(--color-primary); text-shadow: 0 0 22px rgba(var(--rgb-accent), .55); }

/* cta: card-style */
.cta-inner { background: linear-gradient(135deg, #eef2ff, #cffafe 55%, #ddd6fe); border-radius: var(--radius-xl); padding: 3rem; text-align: center; box-shadow: 0 22px 46px -16px rgba(46,16,101,.42), 0 0 34px rgba(var(--rgb-accent), .32); }

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

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #2e1065, #5b21b6 45%, #0e7490); box-shadow: inset 0 0 80px rgba(var(--rgb-accent), .22), 0 20px 50px -22px rgba(46,16,101,.6); }
.card { border: 1px solid rgba(var(--rgb-primary), .16); }

/* 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; }
}