/* CSSVariantEngine v3.0 — changshadianjing.org.cn */
/* Palette: neon cyberpunk | Radius: medium glow | Shadow: luminous glow */
/* Spacing: mixed contrast | Transition: smooth 0.4s */
/* Section layouts: {"news":"grid-3","features":"centered","hero":"overlay","testimonials":"grid-3","partners":"grid-6","faq":"single-column","stats":"grid-3","cta":"centered"} */

@keyframes pulse-glow {
    0%, 100% { box-shadow: var(--shadow-md); }
    50% { box-shadow: 0 0 28px rgba(var(--rgb-accent), 0.5), 0 3px 10px rgba(0,0,0,0.2); }
}

:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #5b21b6;
    --color-accent: #06b6d4;
    --color-surface: #0f172a;
    --color-text: #f8fafc;
    --rgb-primary: 124,58,237;
    --rgb-accent: 6,182,212;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --shadow-sm: 0 2px 4px rgba(var(--rgb-accent), 0.12);
    --shadow-md: 0 0 24px rgba(var(--rgb-accent), 0.4), 0 2px 8px rgba(0,0,0,0.25);
    --shadow-lg: 0 0 32px rgba(var(--rgb-primary), 0.5), 0 4px 16px rgba(0,0,0,0.35);
    --space-section: 2.2rem;
    --space-card: 1.15rem;
    --space-gap: 0.9rem;
    --transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --heading-weight: 700;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: var(--color-surface); caret-color: var(--color-accent); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 0 12px rgba(var(--rgb-primary), 0.3); }
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); border: 1px solid rgba(var(--rgb-accent), 0.3); animation: pulse-glow 3.5s infinite ease-in-out; background: rgba(255,255,255,0.05); backdrop-filter: blur(8px); }
.card:hover { box-shadow: 0 0 32px rgba(var(--rgb-accent), 0.6), 0 0 48px rgba(var(--rgb-primary), 0.4); transform: translateY(-2px); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: var(--color-primary-dark); color: white; border: 1px solid var(--color-accent); padding: 0.75rem 1.5rem; }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { box-shadow: 0 0 32px rgba(var(--rgb-accent), 0.6); background: var(--color-primary); }
a:not([class]) { color: var(--color-accent); transition: var(--transition); outline-color: var(--color-accent); }

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

/* news: grid-3 */
/* 三列等宽网格 */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
.news, .news-section { background: #1e1b4b; border-bottom: 2px solid rgba(var(--rgb-accent), 0.4); }

/* 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; }
.features, .features-section { background: #0c4a6e; border-bottom: 2px solid rgba(var(--rgb-primary), 0.4); }

/* hero: overlay */
/* 全屏背景+文字覆盖 */
.hero { position: relative; min-height: 70vh; display: flex; align-items: center; background: linear-gradient(135deg, #5b21b6 0%, #06b6d4 100%); }
.hero-content { position: relative; z-index: 1; }

/* testimonials: grid-3 */
.testimonial-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
.testimonials, .testimonials-section { background: #172554; border-bottom: 2px solid rgba(var(--rgb-accent), 0.3); }

/* partners: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center; }
.partners, .partners-section { background: #134e4a; border-bottom: 2px solid rgba(var(--rgb-primary), 0.3); }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq, .faq-section { background: #312e81; }

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }
.stats, .stats-section { background: #4c1d95; }

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }
.cta, .cta-section { background: #0e7490; }

/* 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-primary); text-shadow: 0 0 8px rgba(var(--rgb-accent), 0.7); }
.card { border-left: 3px solid var(--color-accent); }
header, .header, .navbar { background: rgba(15, 23, 42, 0.85); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(var(--rgb-accent), 0.2); }

/* 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; }
}