/* CSSVariantEngine v3.0 — go-3377tiyu-qq.com.cn */
/* Palette: cyber-glow | Radius: medium-rounded | Shadow: luminous-glow */
/* Spacing: asymmetric-mixed | Transition: smooth-glide */
/* Section layouts: {"news":"featured-left","features":"horizontal","hero":"centered","testimonials":"carousel","partners":"grid-4","faq":"with-sidebar","stats":"big-number","cta":"centered"} */

:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-accent: #06b6d4;
    --color-surface: #0f172a;
    --color-text: #f1f5f9;
    --rgb-primary: 37,99,235;
    --rgb-accent: 6,182,212;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --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-accent), 0.5);
    --space-section: 4.7rem;
    --space-card: 1.9rem;
    --space-gap: 1.4rem;
    --transition: 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
    --heading-weight: 700;
    --body-line-height: 1.75;
}

@keyframes glow-pulse {
    0%, 100% { box-shadow: var(--shadow-md); }
    50% { box-shadow: 0 0 32px rgba(var(--rgb-accent), 0.55); }
}

/* 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); border: 1px solid rgba(var(--rgb-accent), 0.3); background-color: #1e293b; }
.card:hover, [class*="card"]:hover { box-shadow: 0 0 32px rgba(var(--rgb-accent), 0.6); animation: glow-pulse 2s infinite ease-in-out; border-color: var(--color-accent); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background-color: var(--color-primary); color: white; border: 1px solid var(--color-accent); }
.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); }
a:not([class]):hover { text-shadow: 0 0 8px rgba(var(--rgb-accent), 0.7); }

/* ========== 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-color: #1e1b4b; border: 2px solid rgba(var(--rgb-accent), 0.4); }
.news-grid > *:nth-child(2) { background-color: #134e4a; border: 2px solid rgba(var(--rgb-accent), 0.3); }
.news-grid > *:nth-child(3) { background-color: #4c1d95; border: 2px solid rgba(var(--rgb-accent), 0.3); }

/* features: horizontal */
/* 水平滚动 */
.feature-list { display: flex; gap: calc(var(--space-gap) * 0.6); overflow-x: auto; scroll-snap-type: x mandatory; }
.feature-list > * { flex: 0 0 300px; scroll-snap-align: start; background-color: #18181b; border: 1px solid rgba(var(--rgb-primary), 0.4); }

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

/* testimonials: carousel */
/* 单条轮播 */
.testimonial-list { display: flex; overflow: hidden; } 
.testimonial-list > * { flex: 0 0 100%; background-color: #312e81; border: 1px solid rgba(var(--rgb-accent), 0.3); }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.7); align-items: center; }
.partner-grid > * { background-color: #0f172a; padding: 1rem; border-radius: var(--radius-sm); border: 1px solid rgba(var(--rgb-primary), 0.3); }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
.faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2.1rem; }
.faq-wrapper > *:first-child { background-color: #1e293b; border: 1px solid rgba(var(--rgb-accent), 0.25); }
.faq-wrapper > *:last-child { background-color: #0c4a6e; border: 1px solid rgba(var(--rgb-primary), 0.35); }

/* stats: big-number */
/* 大数字居中 */
.stats-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2.2rem; }
.stats-grid .stat-value { font-size: 3rem; color: var(--color-accent); text-shadow: 0 0 16px rgba(var(--rgb-accent), 0.6); }

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; background-color: #7c2d12; padding: 2.5rem; border-radius: var(--radius-lg); border: 2px solid var(--color-accent); }

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

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #1e293b, #0f172a); border-bottom: 2px solid var(--color-accent); }
.card { border-left: 3px solid var(--color-accent); }
header, .header, .navbar { box-shadow: 0 0 18px rgba(var(--rgb-accent), 0.3); background-color: rgba(15,23,42,0.95); backdrop-filter: blur(8px); 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: 1.9rem; --space-card: 0.95rem; --space-gap: 0.7rem; }
    .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; }
}