:root {
    --color-primary: #6d28d9;
    --color-primary-dark: #4c1d95;
    --color-accent: #fbbf24;
    --color-surface: #fbfbff;
    --color-text: #e7e7f5;
    --rgb-primary: 109,40,217;
    --rgb-accent: 251,191,36;
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 10px;
    --radius-xl: 14px;
    --shadow-sm:
        0 1px 0 rgba(255,255,255,.06),
        0 2px 10px rgba(0,0,0,.28);
    --shadow-md:
        0 1px 0 rgba(255,255,255,.05),
        0 10px 22px rgba(0,0,0,.22),
        0 2px 6px rgba(0,0,0,.18);
    --shadow-lg:
        0 1px 0 rgba(255,255,255,.06),
        0 16px 36px rgba(0,0,0,.26),
        0 6px 14px rgba(0,0,0,.20);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 160ms cubic-bezier(.2,.9,.2,1);
    --heading-weight: 650;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: #0f0f1a; }
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-lg);
    box-shadow:
        0 0 0 1px rgba(255,255,255,.06) inset,
        0 10px 24px rgba(0,0,0,.22),
        0 2px 10px rgba(0,0,0,.18);
    padding: var(--space-card);
    transition: var(--transition);
    background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
}
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); }
a:not([class]) { color: var(--color-accent); transition: var(--transition); text-decoration-color: rgba(251,191,36,.55); }
a:not([class]):hover { text-shadow: 0 0 18px rgba(251,191,36,.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-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }

/* hero: minimal */
.hero { padding: 2rem 0; } .hero-content { max-width: 560px; }

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

/* partners: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 20s linear infinite; }
                @keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* 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:
        radial-gradient(1000px 420px at 20% 0%, rgba(251,191,36,.22), rgba(251,191,36,0) 60%),
        radial-gradient(900px 420px at 90% 20%, rgba(109,40,217,.35), rgba(109,40,217,0) 60%),
        linear-gradient(135deg, #4c1d95, #6d28d9 45%, #0f0f1a 120%);
    color: #fff;
    padding: 4rem 2rem;
    box-shadow:
        0 -1px 0 rgba(255,255,255,.06) inset,
        0 22px 60px rgba(0,0,0,.30);
}

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover {
    transform: translateY(-2px);
    box-shadow:
        0 0 0 1px rgba(255,255,255,.10) inset,
        0 18px 44px rgba(0,0,0,.30),
        0 8px 18px rgba(0,0,0,.22),
        0 0 26px rgba(251,191,36,.10);
}
a:not([class]):hover { color: var(--color-primary-accent, #ffd466); }
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(900px 420px at 20% 0%, rgba(251,191,36,.18), rgba(251,191,36,0) 55%),
        radial-gradient(900px 520px at 90% 25%, rgba(109,40,217,.35), rgba(109,40,217,0) 60%),
        linear-gradient(135deg, #0b0b14, #0f0f1a 35%, #2a145e 110%);
}
.hero, [class*="hero"], section:first-of-type * { text-shadow: 0 1px 0 rgba(0,0,0,.25); }

/* 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; }
}