/* CSSVariantEngine v3.0 — hengbotiyu.sh.cn */
/* Palette: centered-stage glow | Radius: medium | Shadow: glow-effects */
/* Spacing: spacious | Transition: smooth-glow */
/* Section layouts: {"news":"masonry-2","features":"centered","hero":"centered","testimonials":"masonry","partners":"centered","faq":"with-sidebar","stats":"inline","cta":"centered"} */

:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #4c1d95;
    --color-accent: #fbbf24;
    --color-surface: #1a1a2e;
    --color-text: #f8fafc;
    --rgb-primary: 124,58,237;
    --rgb-accent: 251,191,36;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --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 36px rgba(var(--rgb-accent), 0.5);
    --space-section: 5.5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.5s cubic-bezier(0.25, 1, 0.5, 1);
    --heading-weight: 600;
    --body-line-height: 1.65;
}

@keyframes soft-pulse {
    0%, 100% { box-shadow: 0 0 20px rgba(var(--rgb-accent), 0.3); }
    50% { box-shadow: 0 0 28px rgba(var(--rgb-accent), 0.5); }
}

/* 基础覆盖 */
body { 
    color: var(--color-text); 
    line-height: var(--body-line-height); 
    background-color: #0f0f1a;
}
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-sm); 
    padding: var(--space-card); 
    transition: var(--transition); 
    background-color: var(--color-surface);
    border: 1px solid rgba(var(--rgb-accent), 0.15);
}
.card:hover, [class*="card"]:hover {
    box-shadow: 0 0 32px rgba(var(--rgb-accent), 0.6);
    animation: soft-pulse 2s infinite ease-in-out;
}
.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: var(--transition); 
    background-color: var(--color-accent);
    color: #0f0f1a;
    box-shadow: var(--shadow-md);
    border: none;
}
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover {
    box-shadow: 0 0 32px rgba(var(--rgb-accent), 0.7);
    filter: brightness(1.1);
}
a:not([class]) { 
    color: var(--color-accent); 
    transition: var(--transition); 
}
a:not([class]):hover {
    text-shadow: 0 0 12px rgba(var(--rgb-accent), 0.6);
}

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

/* 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; }

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

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
                .testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }

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

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }

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

/* 条件性装饰 */
header, .header, .navbar { 
    background: rgba(15, 15, 26, 0.85); 
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(var(--rgb-accent), 0.1);
}

/* 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; }
}