:root {
    --color-primary: #7c5cff;
    --color-primary-dark: #0f0f1a;
    --color-accent: #f5c542;
    --color-surface: #171728;
    --color-text: #ecedf7;
    --rgb-primary: 124,92,255;
    --rgb-accent: 245,197,66;
    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 26px;
    --radius-xl: 34px;
    --shadow-sm: 0 2px 6px rgba(15,15,26,.35);
    --shadow-md: 0 6px 18px rgba(15,15,26,.45), 0 2px 6px rgba(124,92,255,.18);
    --shadow-lg: 0 18px 42px rgba(15,15,26,.55), 0 6px 16px rgba(245,197,66,.12);
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;
    --transition: 0.5s 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: radial-gradient(ellipse at 50% 0%, #1c1c33 0%, #0f0f1a 55%, #0a0a12 100%); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); background: linear-gradient(120deg, #f5c542 0%, #c9a8ff 50%, #7c5cff 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, #1b1b2e 0%, #14141f 60%, #101019 100%); border: 1px solid transparent; border-image: linear-gradient(135deg, rgba(124,92,255,.55), rgba(245,197,66,.35), rgba(124,92,255,.15)) 1; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, #7c5cff 0%, #a07bff 50%, #f5c542 130%); border: 1px solid rgba(245,197,66,.35); box-shadow: 0 8px 22px rgba(124,92,255,.35), inset 0 1px 0 rgba(255,255,255,.12); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration-color: rgba(245,197,66,.5); }

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

/* features: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }

/* hero: minimal */
.hero { padding: 2rem 0; background: radial-gradient(circle at 50% 30%, rgba(124,92,255,.22) 0%, rgba(124,92,255,.06) 40%, transparent 70%); } .hero-content { max-width: 560px; }

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list { display: flex; overflow: hidden; } 
                .testimonial-list > * { flex: 0 0 100%; }

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; background: linear-gradient(160deg, rgba(124,92,255,.12) 0%, rgba(15,15,26,.4) 60%, rgba(245,197,66,.08) 100%); border-radius: var(--radius-xl); }

/* cta: card-style */
.cta-inner { background: linear-gradient(135deg, #1e1e33 0%, #171728 50%, #0f0f1a 100%); border-radius: var(--radius-xl); padding: 3rem; text-align: center; box-shadow: var(--shadow-lg); border: 1px solid rgba(245,197,66,.22); }

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

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); }
header, .header, .navbar { box-shadow: 0 4px 18px rgba(15,15,26,.55), 0 1px 0 rgba(245,197,66,.18); background: linear-gradient(180deg, rgba(23,23,40,.95) 0%, rgba(15,15,26,.85) 100%); backdrop-filter: blur(8px); }

/* 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; }
}