/* CSSVariantEngine v3.0 — kai-yuan-web3.com.cn */
/* Palette: violet-cyan glow | Radius: medium | Shadow: neon-halo */
/* Spacing: tight | Transition: smooth-glide */
/* Section layouts: {"news":"featured-top","features":"horizontal","hero":"minimal","testimonials":"masonry","partners":"grid-4","faq":"single-column","stats":"grid-3","cta":"split"} */

:root {
    --color-primary: #6d28d9;
    --color-primary-dark: #3b0764;
    --color-accent: #22d3ee;
    --color-surface: #f5f3ff;
    --color-text: #1e1b2e;
    --rgb-primary: 109,40,217;
    --rgb-accent: 34,211,238;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --shadow-sm: 0 0 10px rgba(var(--rgb-accent),.30), 0 1px 3px rgba(var(--rgb-primary),.16);
    --shadow-md: 0 0 20px rgba(var(--rgb-accent),.34), 0 6px 18px rgba(var(--rgb-primary),.18);
    --shadow-lg: 0 0 34px rgba(var(--rgb-accent),.42), 0 14px 38px rgba(var(--rgb-primary),.22);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.42s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 800;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: var(--color-surface); caret-color: var(--color-accent); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: var(--color-primary-dark); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); background-image: linear-gradient(135deg, rgba(var(--rgb-primary),.05), rgba(var(--rgb-accent),.05)); }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); background-color: #ffffff; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); box-shadow: 0 0 14px rgba(var(--rgb-accent),.28); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

/* ========== 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: horizontal */
/* 水平滚动 */
                .feature-list { display: flex; gap: var(--space-gap); overflow-x: auto; scroll-snap-type: x mandatory; }
                .feature-list > * { flex: 0 0 300px; scroll-snap-align: start; }

/* hero: minimal */
.hero { padding: 2rem 0; background-image: radial-gradient(circle at 20% 20%, rgba(var(--rgb-accent),.22), rgba(var(--rgb-primary),.10) 55%, transparent 80%); } .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: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; background-color: #ede9fe; border-radius: var(--radius-xl); }

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; background-color: #1e1b2e; border-radius: var(--radius-lg); }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; background-image: linear-gradient(120deg, rgba(var(--rgb-primary),.18), rgba(var(--rgb-accent),.18)); border-radius: var(--radius-xl); box-shadow: 0 0 30px rgba(var(--rgb-accent),.30); }

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

/* 条件性装饰 */
.card { border-left: 3px solid var(--color-accent); }
.card:hover { box-shadow: 0 0 32px rgba(var(--rgb-accent),.60), 0 10px 26px rgba(var(--rgb-primary),.24); }
header, .header, .navbar { box-shadow: 0 0 0 1px rgba(var(--rgb-accent),.20), 0 6px 24px rgba(var(--rgb-accent),.28); }

@keyframes glowPulse {
    0%, 100% { box-shadow: 0 0 24px rgba(var(--rgb-accent),.40), 0 8px 22px rgba(var(--rgb-primary),.20); }
    50% { box-shadow: 0 0 34px rgba(var(--rgb-accent),.60), 0 10px 26px rgba(var(--rgb-primary),.26); }
}

.card, [class*="card"]:hover { animation-name: glowPulse; animation-duration: 2.8s; animation-timing-function: ease-in-out; animation-iteration-count: infinite; }

/* 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; }
}