/* CSSVariantEngine v3.0 — zh-douyu.cn */
/* Palette: neon-mosaic | Radius: medium rounded | Shadow: glow-elevated */
/* Spacing: mosaic-spacious | Transition: smooth-glow */
/* Section layouts: {"news":"masonry-2","features":"grid-3","hero":"left-aligned","testimonials":"stacked","partners":"centered","faq":"single-column","stats":"inline","cta":"centered"} */

:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #5b21b6;
    --color-accent: #f59e0b;
    --color-surface: #0f172a;
    --color-text: #f1f5f9;
    --rgb-primary: 124, 58, 237;
    --rgb-accent: 245, 158, 11;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 16px;
    --shadow-sm: 0 0 12px rgba(var(--rgb-accent), 0.2);
    --shadow-md: 0 0 20px rgba(var(--rgb-accent), 0.3), 0 0 8px rgba(var(--rgb-primary), 0.2);
    --shadow-lg: 0 0 28px rgba(var(--rgb-accent), 0.4), 0 0 16px rgba(var(--rgb-primary), 0.3);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.75rem;
    --transition: 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --heading-weight: 800;
    --body-line-height: 1.75;
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 20px rgba(var(--rgb-accent), 0.3); }
    50% { box-shadow: 0 0 28px rgba(var(--rgb-accent), 0.45); }
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: var(--color-surface); }
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: var(--shadow-md); padding: var(--space-card); transition: var(--transition); animation: pulse-glow 4s ease-in-out infinite; }
.card:hover { box-shadow: 0 0 32px rgba(var(--rgb-accent), 0.6), 0 0 48px rgba(var(--rgb-primary), 0.4); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background-color: var(--color-primary); color: white; border: none; }
.btn:hover { box-shadow: 0 0 24px rgba(var(--rgb-primary), 0.7); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

/* ========== 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); background: linear-gradient(145deg, #1e293b, #334155); }

/* features: grid-3 */
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
.feature-list .card:nth-child(3n+1) { background: linear-gradient(145deg, #7c3aed22, #7c3aed44); border-left: 3px solid #7c3aed; }
.feature-list .card:nth-child(3n+2) { background: linear-gradient(145deg, #ec489922, #ec489944); border-left: 3px solid #ec4899; }
.feature-list .card:nth-child(3n+3) { background: linear-gradient(145deg, #f59e0b22, #f59e0b44); border-left: 3px solid #f59e0b; }

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }

/* testimonials: stacked */
/* 垂直堆叠 */
                .testimonial-list { display: flex; flex-direction: column; gap: var(--space-gap); max-width: 720px; margin: 0 auto; }
                .testimonial-list .card { background: linear-gradient(145deg, #06b6d422, #06b6d444); border-top: 3px solid #06b6d4; }

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-list .card { background: linear-gradient(145deg, #10b98122, #10b98144); border-right: 3px solid #10b981; }

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; }

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }
.cta-inner .card { background: linear-gradient(145deg, var(--color-primary), var(--color-primary-dark)); }

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

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 0 8px rgba(var(--rgb-accent), 0.7); }
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #7c3aed, #ec4899); }
.card { border: 1px solid rgba(var(--rgb-accent), .15); }
header, .header, .navbar { box-shadow: 0 0 16px rgba(var(--rgb-primary), 0.3); background-color: rgba(15, 23, 42, 0.9); backdrop-filter: blur(8px); }

/* 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; }
}