:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #4c1d95;
    --color-accent: #c084fc;
    --color-surface: #faf5ff;
    --color-text: #1e1b2e;
    --rgb-primary: 124,58,237;
    --rgb-accent: 192,132,252;
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 22px;
    --radius-xl: 30px;
    --shadow-sm: 0 1px 3px rgba(124,58,237,.08), 0 1px 2px rgba(0,0,0,.06);
    --shadow-md: 0 4px 14px rgba(124,58,237,.12), 0 2px 6px rgba(0,0,0,.07), 0 0 0 1px rgba(124,58,237,.04);
    --shadow-lg: 0 16px 40px rgba(124,58,237,.18), 0 6px 16px rgba(0,0,0,.09), 0 0 0 1px rgba(124,58,237,.06);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.45s cubic-bezier(0.25, 0.8, 0.25, 1);
    --heading-weight: 600;
    --body-line-height: 1.65;
}

/* 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); background: linear-gradient(160deg, #ffffff 0%, #faf5ff 60%, #f3e8ff 100%); border: 1px solid rgba(124,58,237,.08); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, #7c3aed, #4c1d95); color: #fff; box-shadow: 0 2px 8px rgba(124,58,237,.25); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

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

/* news: grid-3 */
/* 三列等宽网格 */
                .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

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

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }

/* 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; background: linear-gradient(135deg, #7c3aed, #c084fc); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

/* cta: full-bg */
.cta-section { background: linear-gradient(135deg, #4c1d95 0%, #7c3aed 40%, #a855f7 70%, #c084fc 100%); color: #fff; padding: 4rem 2rem; }

/* 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: var(--shadow-lg); }
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #4c1d95 0%, #7c3aed 35%, #a855f7 65%, #c084fc 100%); }

/* 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; }
}