:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #5b21b6;
    --color-accent: #f5d0fe;
    --color-surface: #fff7ed;
    --color-text: #1f1532;
    --rgb-primary: 124,58,237;
    --rgb-accent: 245,208,254;
    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 28px;
    --radius-xl: 38px;
    --shadow-sm: 0 1px 0 rgba(255, 255, 255, 0.08), 0 10px 25px rgba(124, 58, 237, 0.12);
    --shadow-md: 0 2px 0 rgba(255, 255, 255, 0.08), 0 14px 40px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(255, 255, 255, 0.08) inset;
    --shadow-lg: 0 6px 18px rgba(0, 0, 0, 0.45), 0 18px 60px rgba(124, 58, 237, 0.18), 0 0 0 1px rgba(255, 255, 255, 0.10) inset;
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.55s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 750;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: radial-gradient(1200px 600px at 50% -200px, rgba(124, 58, 237, 0.35) 0%, rgba(15, 15, 26, 0) 60%), radial-gradient(900px 500px at 15% 10%, rgba(245, 208, 254, 0.18) 0%, rgba(15, 15, 26, 0) 55%), #0f0f1a; }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: rgba(255, 247, 237, 0.95); text-shadow: 0 1px 0 rgba(255, 255, 255, 0.06), 0 10px 35px rgba(124, 58, 237, 0.22); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] {
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 35px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(255, 255, 255, 0.10) inset, 0 1px 0 rgba(255, 255, 255, 0.06);
    padding: var(--space-card);
    transition: var(--transition);
    background: radial-gradient(800px 240px at 15% 0%, rgba(124, 58, 237, 0.18) 0%, rgba(124, 58, 237, 0) 55%), linear-gradient(180deg, rgba(255, 247, 237, 0.08) 0%, rgba(255, 247, 237, 0.03) 100%);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: rgba(255, 247, 237, 0.92);
}
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.10) inset, 0 12px 30px rgba(0, 0, 0, 0.35); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-shadow: 0 0 22px rgba(124, 58, 237, 0.25); }
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 0 26px rgba(245, 208, 254, 0.35); }

/* ========== 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: grid-3 */
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

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

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
                .testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }

/* 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; }

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

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(900px 420px at 50% 0%, rgba(245, 208, 254, 0.18) 0%, rgba(245, 208, 254, 0) 55%),
        radial-gradient(700px 320px at 10% 35%, rgba(124, 58, 237, 0.38) 0%, rgba(124, 58, 237, 0) 60%),
        linear-gradient(135deg, #0b0b16 0%, rgba(124, 58, 237, 0.75) 28%, rgba(91, 33, 182, 0.65) 62%, #0f0f1a 100%);
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08) inset, 0 30px 90px rgba(0, 0, 0, 0.55);
}

/* 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; --radius-lg: 24px; --radius-md: 16px; transition-duration: 0.5s; }
    .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; }
}