/* CSSVariantEngine v3.0 — go-kaiyuanqipaiyouxi.com.cn */
/* Palette: cyber neon glow | Radius: medium rounded | Shadow: luminous */
/* Spacing: mixed tight-loose | Transition: smooth glow */
/* Section layouts: {"news":"featured-left","features":"horizontal","hero":"overlay","testimonials":"carousel","partners":"centered","faq":"two-column","stats":"grid-3","cta":"full-bg"} */

@keyframes subtlePulse {
    0% { box-shadow: 0 0 20px rgba(var(--rgb-accent), 0.35); }
    50% { box-shadow: 0 0 28px rgba(var(--rgb-accent), 0.5); }
    100% { box-shadow: 0 0 20px rgba(var(--rgb-accent), 0.35); }
}

: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: 14px;
    --radius-xl: 16px;
    --shadow-sm: 0 0 12px rgba(var(--rgb-accent), 0.25);
    --shadow-md: 0 0 24px rgba(var(--rgb-accent), 0.4);
    --shadow-lg: 0 0 40px rgba(var(--rgb-primary), 0.5);
    --space-section: 2.1rem;
    --space-card: 1.1rem;
    --space-gap: 0.9rem;
    --transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --heading-weight: 700;
    --body-line-height: 1.75;
    accent-color: var(--color-accent);
}

/* 基础覆盖 */
body { color: var(--color-text); background-color: var(--color-surface); line-height: var(--body-line-height); caret-color: var(--color-accent); }
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); border: 2px solid rgba(var(--rgb-accent), 0.3); animation: subtlePulse 3s ease-in-out infinite; }
.card:hover { box-shadow: 0 0 32px rgba(var(--rgb-accent), 0.7); border-color: var(--color-accent); transform: translateY(-2px); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background-color: var(--color-primary); border: 2px solid var(--color-accent); color: white; }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { box-shadow: 0 0 32px rgba(var(--rgb-accent), 0.6); }
a:not([class]) { color: var(--color-accent); transition: var(--transition); }

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

/* news: featured-left */
/* 左大右小 (1大+2小) */
.news-grid { display: grid; grid-template-columns: 2fr 1fr; grid-template-rows: auto auto; gap: var(--space-gap); }
.news-grid > *:first-child { grid-row: span 2; background: linear-gradient(145deg, #1e1b4b, #312e81); }
.news-grid > *:nth-child(2) { background: linear-gradient(145deg, #831843, #be185d); }
.news-grid > *:nth-child(3) { background: linear-gradient(145deg, #164e63, #0e7490); }

/* 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; background: linear-gradient(145deg, #4c1d95, #6d28d9); }

/* hero: overlay */
/* 全屏背景+文字覆盖 */
.hero { position: relative; min-height: 70vh; display: flex; align-items: center; }
.hero-content { position: relative; z-index: 1; }

/* testimonials: carousel */
/* 单条轮播 */
.testimonial-list { display: flex; overflow: hidden; } 
.testimonial-list > * { flex: 0 0 100%; background: linear-gradient(145deg, #7f1d1d, #dc2626); }

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }
.partner-grid > * { background: #1e293b; padding: 1.25rem; border-radius: var(--radius-md); border: 1px solid rgba(var(--rgb-accent), 0.4); }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }
.faq-list > *:nth-child(odd) { background: #312e81; }
.faq-list > *:nth-child(even) { background: #1e3a8a; }

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }
.stats-grid > * { background: linear-gradient(145deg, #065f46, #059669); padding: 1.5rem; border-radius: var(--radius-lg); }

/* cta: full-bg */
.cta-section { background: linear-gradient(135deg, #ec4899, #9333ea); color: #fff; padding: 4rem 2rem; box-shadow: var(--shadow-lg); }

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

/* 条件性装饰 */
a:not([class]):hover { color: #22d3ee; text-shadow: 0 0 12px rgba(var(--rgb-accent), 0.8); }
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #7c3aed, #0ea5e9); box-shadow: inset 0 0 60px rgba(var(--rgb-primary), 0.4); }
.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; }
}