:root {
    --color-primary: #9b5cff;
    --color-primary-dark: #3a1b6a;
    --color-accent: #ffcc66;
    --color-surface: #f3efff;
    --color-text: #e9e6ff;
    --rgb-primary: 155,92,255;
    --rgb-accent: 255,204,102;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 22px;

    --shadow-sm: 0 6px 14px rgba(0, 0, 0, 0.18);
    --shadow-md: 0 10px 28px rgba(0, 0, 0, 0.32), 0 1px 0 rgba(255, 255, 255, 0.06) inset;
    --shadow-lg: 0 18px 46px rgba(0, 0, 0, 0.42), 0 6px 16px rgba(155, 92, 255, 0.14), 0 1px 0 rgba(255, 255, 255, 0.06) inset;

    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.45s cubic-bezier(0.16, 1, 0.3, 1);

    --heading-weight: 800;
    --body-line-height: 1.75;

    --stage-bg: #0f0f1a;
    --spot-glow: rgba(155, 92, 255, 0.26);
    --edge: rgba(255, 255, 255, 0.12);
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background:
        radial-gradient(900px 420px at 50% -40px, rgba(155, 92, 255, 0.28), transparent 60%),
        radial-gradient(700px 360px at 8% 10%, rgba(255, 204, 102, 0.18), transparent 55%),
        radial-gradient(760px 420px at 92% 18%, rgba(0, 180, 216, 0.12), transparent 60%),
        var(--stage-bg);
    text-shadow: 0 1px 0 rgba(0, 0, 0, 0.25);
}
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] {
    border-radius: var(--radius-xl);
    box-shadow:
        0 10px 26px rgba(0,0,0,0.36),
        0 2px 0 rgba(255,255,255,0.06) inset,
        0 0 0 1px rgba(155, 92, 255, 0.18);
    padding: var(--space-card);
    transition:
        transform var(--transition),
        box-shadow var(--transition),
        border-color var(--transition),
        background var(--transition),
        filter var(--transition);
    background:
        linear-gradient(180deg, rgba(243,239,255,0.98), rgba(243,239,255,0.88));
    color: #2a2540;
    border: 1px solid rgba(var(--rgb-primary), .18);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition:
        transform var(--transition),
        background var(--transition),
        box-shadow var(--transition),
        border-color var(--transition),
        color var(--transition);
    filter: saturate(1.05);
}
a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
    text-shadow: 0 0 18px rgba(155, 92, 255, 0.18);
}

/* ========== 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: split */
/* 左文右图 */
                .hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center; }

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

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

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

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

/* 条件性装饰 */
.card { border: 1px solid rgba(var(--rgb-primary), .22); }

/* 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; }
}