:root {
    --color-primary: #6d28d9;
    --color-primary-dark: #4c1d95;
    --color-accent: #22d3ee;
    --color-surface: #f3f1ff;
    --color-text: #1b1436;
    --rgb-primary: 109,40,217;
    --rgb-accent: 34,211,238;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 16px;
    --shadow-sm: 0 0 0 1px rgba(var(--rgb-primary), .10), 0 0 12px rgba(var(--rgb-accent), .18);
    --shadow-md: 0 6px 18px rgba(var(--rgb-primary), .18), 0 0 26px rgba(var(--rgb-accent), .26);
    --shadow-lg: 0 16px 40px rgba(var(--rgb-primary), .22), 0 0 48px rgba(var(--rgb-accent), .34);
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;
    --transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 700;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: #faf9ff; }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: #241a4d; }
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-color: #ffffff; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); box-shadow: 0 0 0 1px rgba(var(--rgb-primary), .16), 0 0 18px rgba(var(--rgb-accent), .32); caret-color: var(--color-accent); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

/* ========== 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; }

/* features: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }

/* hero: overlay */
/* 全屏背景+文字覆盖 */
                .hero { position: relative; min-height: 70vh; display: flex; align-items: center; }
                .hero-content { position: relative; z-index: 1; text-shadow: 0 2px 24px rgba(var(--rgb-accent), .45); }

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

/* partners: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center; }

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

/* 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), .50); }

/* cta: card-style */
.cta-inner { background: linear-gradient(135deg, #f3f1ff 0%, #e4faff 55%, #efe6ff 100%); border-radius: var(--radius-xl); padding: 3rem; text-align: center; box-shadow: 0 18px 44px rgba(var(--rgb-primary), .20), 0 0 60px rgba(var(--rgb-accent), .30); animation: glow-pulse 4.5s ease-in-out infinite; }

@keyframes glow-pulse {
    0%, 100% { box-shadow: 0 18px 44px rgba(var(--rgb-primary), .20), 0 0 58px rgba(var(--rgb-accent), .26); }
    50% { box-shadow: 0 18px 44px rgba(var(--rgb-primary), .27), 0 0 82px rgba(var(--rgb-accent), .46); }
}

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

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 0 14px rgba(var(--rgb-accent), .60); }
header, .header, .navbar { background: linear-gradient(180deg, rgba(var(--rgb-primary), .10), rgba(var(--rgb-accent), 0)); backdrop-filter: blur(6px); border-color: rgba(var(--rgb-accent), .35); }

/* 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; }
}