:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #4c1d95;
    --color-accent: #f59e0b;
    --color-surface: #faf5ff;
    --color-text: #2e1065;
    --rgb-primary: 124,58,237;
    --rgb-accent: 245,158,11;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 5px rgba(76,29,149,.14), 0 1px 3px rgba(245,158,11,.08);
    --shadow-md: 0 8px 20px -4px rgba(76,29,149,.22), 0 3px 8px rgba(124,58,237,.12);
    --shadow-lg: 0 22px 44px -8px rgba(76,29,149,.28), 0 8px 16px rgba(245,158,11,.14), 0 0 0 1px rgba(124,58,237,.06);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.55s cubic-bezier(0.22, 0.9, 0.28, 1);
    --heading-weight: 600;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(160deg, #faf5ff 0%, #f3e8ff 55%, #fef3c7 100%); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: var(--color-primary-dark); }
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(135deg, #ffffff 0%, #faf5ff 60%, #f5f0ff 100%); border: 1px solid rgba(124,58,237,.16); }
.card:hover, [class*="card"]:hover { box-shadow: var(--shadow-lg); border-color: rgba(245,158,11,.4); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(120deg, var(--color-primary) 0%, #9333ea 50%, var(--color-accent) 100%); color: #fff; border: 1px solid rgba(76,29,149,.35); box-shadow: 0 4px 12px rgba(124,58,237,.28); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { box-shadow: 0 10px 24px -4px rgba(245,158,11,.45), 0 4px 10px rgba(124,58,237,.3); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); }
a:not([class]):hover { color: var(--color-accent); }

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

/* news: featured-left */
/* 左大右小 (1大+2小) */
                .news-grid { display: grid; grid-template-columns: 2fr 1fr; grid-template-rows: auto auto; gap: var(--space-gap); }
                .news-grid > *:first-child { grid-row: span 2; background: linear-gradient(145deg, #ede9fe 0%, #f5f0ff 50%, #fef3c7 100%); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }

/* features: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }
.feature-list > * { background: linear-gradient(160deg, #faf5ff 0%, #ede9fe 100%); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }

/* hero: minimal */
.hero { padding: 2rem 0; background: radial-gradient(circle at 30% 20%, rgba(124,58,237,.12) 0%, rgba(245,158,11,.06) 45%, transparent 75%); } .hero-content { max-width: 560px; }

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list { display: flex; overflow: hidden; } 
                .testimonial-list > * { flex: 0 0 100%; background: linear-gradient(135deg, #f5f0ff 0%, #fef3c7 100%); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }

/* 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: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }
                .faq-wrapper > * { border-radius: var(--radius-md); }

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }
.stats-grid > * { background: linear-gradient(180deg, #ede9fe 0%, #faf5ff 100%); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; background: linear-gradient(120deg, rgba(124,58,237,.14) 0%, rgba(245,158,11,.12) 100%); border-radius: var(--radius-xl); box-shadow: var(--shadow-md); }

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

/* 条件性装饰 */
header, .header, .navbar { background: transparent; }

/* 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; }
}