:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #4c1d95;
    --color-accent: #f5c542;
    --color-surface: #f5f2ff;
    --color-text: #1e1b2e;
    --color-stage: #0f0f1a;
    --rgb-primary: 124,58,237;
    --rgb-accent: 245,197,66;
    --radius-sm: 12px;
    --radius-md: 22px;
    --radius-lg: 30px;
    --radius-xl: 38px;
    --shadow-sm: 0 1px 2px rgba(15,15,26,.10), 0 0 0 1px rgba(124,58,237,.06);
    --shadow-md: 0 8px 22px -8px rgba(15,15,26,.22), 0 3px 8px -2px rgba(124,58,237,.12), 0 0 0 1px rgba(124,58,237,.05);
    --shadow-lg: 0 28px 56px -14px rgba(15,15,26,.30), 0 10px 24px -10px rgba(124,58,237,.22), 0 0 0 1px rgba(245,197,66,.14);
    --space-section: 3.5rem;
    --space-card: 1.5rem;
    --space-gap: 1.15rem;
    --transition: 0.5s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 800;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background: radial-gradient(circle at 50% 0%, #ffffff 0%, #f5f2ff 42%, #ede9fe 72%, #ddd6fe 100%);
}
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); background: linear-gradient(180deg, rgba(124,58,237,.06) 0%, rgba(124,58,237,.015) 45%, rgba(245,197,66,.04) 100%); }
.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%, #faf8ff 40%, #ede9fe 78%, #ddd6fe 100%);
    color: #1e1b2e;
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    background: linear-gradient(135deg, #4c1d95 0%, #7c3aed 32%, #a855f7 62%, #f5c542 100%);
    color: #ffffff;
    box-shadow: 0 10px 24px -10px rgba(124,58,237,.55), 0 2px 8px rgba(245,197,66,.28);
}
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: centered */
/* 居中大卡片 */
                .feature-list { display: flex; flex-direction: column; align-items: center; gap: calc(var(--space-gap) * 2); max-width: 720px; margin: 0 auto; }

/* 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; }

/* testimonials: stacked */
/* 垂直堆叠 */
                .testimonial-list { display: flex; flex-direction: column; gap: var(--space-gap); max-width: 720px; margin: 0 auto; }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }

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

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }

/* 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); }
.hero, [class*="hero"], section:first-of-type {
    background: radial-gradient(circle at 18% 22%, rgba(245,197,66,.38) 0%, rgba(245,197,66,0) 45%),
                linear-gradient(135deg, #0f0f1a 0%, #2e1065 38%, #4c1d95 68%, #7c3aed 100%);
    color: #ffffff;
    text-shadow: 0 2px 14px rgba(15,15,26,.45);
}
header, .header, .navbar {
    box-shadow: 0 14px 34px -20px rgba(15,15,26,.42), 0 2px 10px rgba(124,58,237,.10);
    background: linear-gradient(90deg, rgba(255,255,255,.96) 0%, rgba(245,242,255,.96) 52%, rgba(237,233,254,.96) 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: 2.25rem; --space-card: 1.15rem; --space-gap: 0.85rem; }
    .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; }
}