/* CSSVariantEngine v3.0 — sc-youlive.com.cn */
/* Palette: neon mosaic | Radius: rounded-medium | Shadow: glow-accent */
/* Spacing: mosaic-wide | Transition: smooth-glow */
/* Section layouts: {"news":"masonry-2","features":"centered","hero":"centered","testimonials":"stacked","partners":"grid-4","faq":"single-column","stats":"grid-3","cta":"split"} */

@keyframes pulse-glow {
    0% { box-shadow: 0 0 16px rgba(var(--rgb-accent), 0.35), 0 4px 12px rgba(0, 0, 0, 0.3); }
    100% { box-shadow: 0 0 24px rgba(var(--rgb-accent), 0.5), 0 4px 12px rgba(0, 0, 0, 0.3); }
}

:root {
    --color-primary: #8b5cf6;
    --color-primary-dark: #7c3aed;
    --color-accent: #f472b6;
    --color-surface: #0f172a;
    --color-text: #f8fafc;
    --rgb-primary: 139, 92, 246;
    --rgb-accent: 244, 114, 182;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 22px;
    --shadow-sm: 0 0 12px rgba(var(--rgb-accent), 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.08);
    --shadow-md: 0 0 24px rgba(var(--rgb-accent), 0.4), 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 0 32px rgba(var(--rgb-accent), 0.6), 0 8px 20px rgba(0, 0, 0, 0.4);
    --space-section: 3.2rem;
    --space-card: 1.3rem;
    --space-gap: 1.5rem;
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --heading-weight: 700;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body { background-color: var(--color-surface); color: var(--color-text); line-height: var(--body-line-height); caret-color: var(--color-accent); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 0 12px rgba(var(--rgb-accent), 0.3); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] { background: linear-gradient(145deg, #1e293b, #1e1b4b); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); animation: pulse-glow 5s ease-in-out infinite alternate; border: 1px solid rgba(255, 255, 255, 0.1); }
.btn, button[class*="btn"], a[class*="btn"] { background: linear-gradient(135deg, var(--color-primary), var(--color-accent)); border-radius: var(--radius-md); transition: var(--transition); border: 1px solid rgba(255, 255, 255, 0.15); box-shadow: 0 0 16px rgba(var(--rgb-primary), 0.3); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { box-shadow: 0 0 28px rgba(var(--rgb-accent), 0.6); transform: translateY(-2px); }
a:not([class]) { color: var(--color-accent); transition: var(--transition); text-shadow: 0 0 8px rgba(var(--rgb-accent), 0.4); }

/* ========== Section Layout Variants ========== */

/* news: masonry-2 */
/* 两列瀑布流 */
                .news-grid { column-count: 2; column-gap: var(--space-gap); }
                .news-grid .card { break-inside: avoid; margin-bottom: var(--space-gap); }

/* features: centered */
/* 居中大卡片 */
                .feature-list { display: flex; flex-direction: column; align-items: center; gap: calc(var(--space-gap) * 2); max-width: 720px; margin: 0 auto; }

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

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

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }
.partner-grid .card { background: linear-gradient(145deg, #0f172a, #1e293b); }

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

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }
.stats-grid .card { background: linear-gradient(145deg, #312e81, #7c3aed); }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }
.cta-inner .card { background: linear-gradient(135deg, var(--color-primary), var(--color-accent)); }

/* Page Layout: narrow-centered */
/* 窄版居中 */
            .page-main { max-width: 860px; margin: 0 auto; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-6px) scale(1.01); box-shadow: var(--shadow-lg); animation-play-state: paused; }
.card { border-left: 3px solid var(--color-accent); }

/* 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; }
}