/* CSSVariantEngine v3.0 — wanmeijingji.org.cn */
/* Palette: neon cyber | Radius: medium 8-16px | Shadow: glow-accent */
/* Spacing: mixed tight/loose | Transition: smooth elastic */
/* Section layouts: {"news":"featured-left","features":"horizontal","hero":"left-aligned","testimonials":"stacked","partners":"centered","faq":"single-column","stats":"inline","cta":"centered"} */

:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #5b21b6;
    --color-accent: #00f0ff;
    --color-surface: #0f172a;
    --color-text: #f1f5f9;
    --rgb-primary: 124, 58, 237;
    --rgb-accent: 0, 240, 255;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 14px;
    --radius-xl: 16px;
    --shadow-sm: 0 0 12px rgba(var(--rgb-accent), 0.2);
    --shadow-md: 0 0 24px rgba(var(--rgb-accent), 0.4);
    --shadow-lg: 0 0 32px rgba(var(--rgb-accent), 0.6);
    --space-section: 5rem;
    --space-card: 2.1rem;
    --space-gap: 1.2rem;
    --transition: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    --heading-weight: 600;
    --body-line-height: 1.75;
}

@keyframes subtle-pulse {
    0%, 100% { box-shadow: 0 0 24px rgba(var(--rgb-accent), 0.35); }
    50% { box-shadow: 0 0 36px 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);
    caret-color: var(--color-accent);
    accent-color: var(--color-accent);
}
h1, h2, h3, h4 { 
    font-weight: var(--heading-weight); 
    text-shadow: 0 0 8px rgba(var(--rgb-accent), 0.3);
}
section, .section { 
    padding-top: var(--space-section); 
    padding-bottom: var(--space-section); 
}
section.hero { background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%); }
section.news { background: linear-gradient(135deg, #0c4a6e 0%, #075985 100%); }
section.features { background: linear-gradient(135deg, #18181b 0%, #27272a 100%); }
section.testimonials { background: linear-gradient(135deg, #312e81 0%, #4c1d95 100%); }
section.partners { background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%); }
section.faq { background: linear-gradient(135deg, #431407 0%, #78350f 100%); }
section.stats { background: linear-gradient(135deg, #064e3b 0%, #065f46 100%); }
section.cta { background: linear-gradient(135deg, #701a75 0%, #831843 100%); }
.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);
    background-color: rgba(255,255,255,0.05);
    backdrop-filter: blur(8px);
}
.card:hover, [class*="card"]:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
    animation: subtle-pulse 2.5s ease-in-out infinite;
    transform: translateY(-3px);
}
.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: var(--transition); 
    border: 2px solid var(--color-accent);
    background-color: var(--color-primary);
    color: white;
    padding: 0.8rem 1.8rem;
}
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover {
    box-shadow: 0 0 32px rgba(var(--rgb-accent), 0.6);
    background-color: var(--color-accent);
    color: var(--color-surface);
}
a:not([class]) { 
    color: var(--color-accent); 
    transition: var(--transition); 
    text-decoration: none;
    border-bottom: 1px solid transparent;
}

/* ========== 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; }

/* 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; }

/* 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; }

/* 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; }

/* 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; }

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
.page-main { max-width: 1200px; margin: 0 auto; }

/* 条件性装饰 */
a:not([class]):hover { 
    color: white; 
    border-bottom-color: var(--color-accent);
    text-shadow: 0 0 10px rgba(var(--rgb-accent), 0.7);
}
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; }
}