:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #4c1d95;
    --color-accent: #d4af37;
    --color-surface: #0f0f1a;
    --color-text: #e8e6f0;
    --rgb-primary: 124,58,237;
    --rgb-accent: 212,175,55;
    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 28px;
    --radius-xl: 36px;
    --shadow-sm: 0 2px 10px rgba(var(--rgb-primary),.22), 0 1px 3px rgba(15,15,26,.4);
    --shadow-md: 0 6px 22px rgba(var(--rgb-primary),.20), 0 2px 8px rgba(15,15,26,.5), 0 0 0 1px rgba(var(--rgb-accent),.06);
    --shadow-lg: 0 14px 48px rgba(var(--rgb-primary),.18), 0 4px 16px rgba(15,15,26,.6), 0 0 60px rgba(var(--rgb-accent),.06);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.5s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 700;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: radial-gradient(ellipse 80% 60% at 50% 0%, #1a1030 0%, #0f0f1a 55%, #0a0a14 100%); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); background: linear-gradient(135deg, #f0ecff 0%, #d4af37 60%, #b8952e 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(160deg, rgba(30,24,58,.92) 0%, rgba(20,16,40,.96) 50%, rgba(15,12,30,.98) 100%); border: 1px solid transparent; border-image: linear-gradient(135deg, rgba(var(--rgb-accent),.35), rgba(var(--rgb-primary),.25), rgba(var(--rgb-accent),.1)) 1; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%); color: #f5f2ff; box-shadow: 0 4px 18px rgba(var(--rgb-primary),.35), inset 0 1px 0 rgba(255,255,255,.12); }
a:not([class]) { color: var(--color-accent); transition: var(--transition); text-shadow: 0 0 12px rgba(var(--rgb-accent),.25); }

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

/* hero: centered */
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }

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

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

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; background: radial-gradient(ellipse 70% 100% at 50% 50%, rgba(var(--rgb-primary),.18) 0%, rgba(15,15,26,0) 70%); border-radius: var(--radius-xl); }

/* Page Layout: wide */
/* 超宽 */
            .page-main { max-width: 1400px; margin: 0 auto; }

/* 条件性装饰 */

/* 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; }
}