:root {
    --color-primary: #2d1b4e;
    --color-primary-dark: #1a0f2e;
    --color-accent: #f0c040;
    --color-surface: #1a1a2e;
    --color-text: #f0ecec;
    --rgb-primary: 45,27,78;
    --rgb-accent: 240,192,64;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --shadow-sm: 0 2px 8px -2px rgba(0,0,0,0.4), 0 1px 4px -1px rgba(0,0,0,0.3);
    --shadow-md: 0 8px 24px -6px rgba(0,0,0,0.5), 0 4px 12px -4px rgba(0,0,0,0.4);
    --shadow-lg: 0 12px 36px -8px rgba(0,0,0,0.6), 0 6px 20px -4px rgba(0,0,0,0.5);
    --space-section: 3.5rem;
    --space-card: 1.5rem;
    --space-gap: 1.2rem;
    --transition: 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
    --heading-weight: 600;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { background: linear-gradient(145deg, #0f0f1a 0%, #1a0f2e 100%); color: var(--color-text); line-height: var(--body-line-height); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 1px 4px rgba(240,192,64,0.3); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); background: transparent; }
.card, [class*="card"] { background: rgba(255,255,255,0.08); backdrop-filter: blur(12px); border: 1px solid rgba(240,192,64,0.15); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); background: linear-gradient(135deg, var(--color-accent), #d4a017); border: none; color: #1a0f2e; box-shadow: 0 4px 14px 0 rgba(240,192,64,0.3); transition: var(--transition); text-shadow: none; }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { box-shadow: 0 6px 20px 0 rgba(240,192,64,0.5); transform: translateY(-2px); }
a:not([class]) { color: var(--color-accent); text-shadow: 0 0 6px rgba(240,192,64,0.2); transition: var(--transition); }
a:not([class]):hover { color: #e6b800; text-shadow: 0 0 12px rgba(240,192,64,0.6); }

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

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }

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

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

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

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: full-bg */
.cta-section { background: linear-gradient(135deg, #2d1b4e 0%, #1a0f2e 100%); color: #f0ecec; padding: 4rem 2rem; box-shadow: inset 0 0 40px rgba(240,192,64,0.15), 0 8px 32px -4px rgba(0,0,0,0.6); }

/* Page Layout: narrow-centered */
/* 窄版居中 */
            .page-main { max-width: 860px; margin: 0 auto; background: rgba(255,255,255,0.06); backdrop-filter: blur(8px); border-radius: var(--radius-xl); padding: 2rem; box-shadow: var(--shadow-lg); }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); background: rgba(255,255,255,0.12); }
.card { border: 1px solid rgba(var(--rgb-accent), .2); }
header, .header, .navbar { background: rgba(15,15,26,0.9); backdrop-filter: blur(16px); border-bottom: 1px solid rgba(240,192,64,0.1); }

/* 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; }
}