:root {
    --color-primary: #6d28d9;
    --color-primary-dark: #2e1065;
    --color-accent: #c084fc;
    --color-surface: #faf5ff;
    --color-text: #1e1b4b;
    --rgb-primary: 109,40,217;
    --rgb-accent: 192,132,252;
    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 26px;
    --radius-xl: 36px;
    --shadow-sm: 0 1px 3px rgba(109,40,217,.06), 0 1px 2px rgba(109,40,217,.04);
    --shadow-md: 0 4px 12px rgba(109,40,217,.10), 0 2px 6px rgba(109,40,217,.06), 0 0 0 1px rgba(192,132,252,.06);
    --shadow-lg: 0 12px 28px rgba(109,40,217,.16), 0 6px 14px rgba(109,40,217,.08), 0 0 0 1px rgba(192,132,252,.10);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.45s cubic-bezier(0.22, 0.61, 0.36, 1);
    --heading-weight: 800;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(160deg, #faf5ff 0%, #f3e8ff 40%, #ede9fe 100%); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); background: linear-gradient(135deg, #6d28d9 0%, #a855f7 50%, #c084fc 100%); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
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(145deg, #ffffff 0%, #faf5ff 60%, #f3e8ff 100%); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, #7c3aed 0%, #a855f7 50%, #c084fc 100%); color: #ffffff; box-shadow: 0 4px 14px rgba(124,58,237,.28), 0 2px 6px rgba(124,58,237,.16); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

/* ========== 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; background: radial-gradient(ellipse at 30% 20%, rgba(168,85,247,.10) 0%, transparent 60%), radial-gradient(ellipse at 80% 80%, rgba(192,132,252,.08) 0%, transparent 55%); } .hero-content { max-width: 560px; }

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
                .testimonial-list > * { break-inside: avoid; margin-bottom: 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: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: card-style */
.cta-inner { background: linear-gradient(135deg, #ede9fe 0%, #faf5ff 40%, #f3e8ff 100%); border-radius: var(--radius-xl); padding: 3rem; text-align: center; box-shadow: 0 16px 40px rgba(109,40,217,.12), 0 8px 20px rgba(109,40,217,.06), inset 0 1px 0 rgba(255,255,255,.8); border: 1px solid rgba(192,132,252,.20); }

/* 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: 0 20px 48px rgba(109,40,217,.20), 0 10px 24px rgba(109,40,217,.10), 0 0 0 1px rgba(192,132,252,.15); }
a:not([class]):hover { color: var(--color-accent); }
.card { border: 1px solid rgba(var(--rgb-primary), .10); border-image: linear-gradient(135deg, rgba(109,40,217,.18), rgba(192,132,252,.10), rgba(168,85,247,.16)) 1; }
header, .header, .navbar { background: linear-gradient(180deg, rgba(250,245,255,.95) 0%, rgba(250,245,255,.0) 100%); backdrop-filter: blur(12px); }

/* 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; }
}