/* CSSVariantEngine v3.0 — c7c7-index.com.cn */
/* Palette: stage-purple | Radius: soft-large | Shadow: soft-multilayer */
/* Spacing: tight | Transition: smooth */
/* Section layouts: {"news":"masonry-2","features":"grid-3","hero":"minimal","testimonials":"stacked","partners":"grid-6","faq":"two-column","stats":"big-number","cta":"card-style"} */

:root {
    --color-primary: #7c5cff;
    --color-primary-dark: #4c2fbf;
    --color-accent: #d4b56a;
    --color-surface: #1a1a2e;
    --color-text: #e8e6f5;
    --rgb-primary: 124,92,255;
    --rgb-accent: 212,181,106;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 4px rgba(15,15,26,.06), 0 1px 2px rgba(15,15,26,.04);
    --shadow-md: 0 4px 8px rgba(15,15,26,.05), 0 20px 40px -10px rgba(15,15,26,.12);
    --shadow-lg: 0 8px 16px rgba(15,15,26,.08), 0 30px 60px -12px rgba(76,47,191,.28);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.4s ease;
    --heading-weight: 700;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: #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-md); padding: var(--space-card); transition: var(--transition); background: #1a1a2e; border: 1px solid rgba(124,92,255,.14); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); }
a:not([class]) { color: var(--color-accent); transition: var(--transition); }

/* ========== 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: grid-3 */
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* hero: minimal */
.hero { padding: 2rem 0; } .hero-content { max-width: 560px; }

/* testimonials: stacked */
/* 垂直堆叠 */
                .testimonial-list { display: flex; flex-direction: column; gap: var(--space-gap); max-width: 720px; margin: 0 auto; }

/* partners: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center; }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }

/* stats: big-number */
/* 大数字居中 */
                .stats-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }
                .stats-grid .stat-value { font-size: 3rem; color: var(--color-accent); text-shadow: 0 2px 12px rgba(212,181,106,.35); }

/* cta: card-style */
.cta-inner { background: linear-gradient(160deg, #1e1b3a, #14122b); border-radius: var(--radius-xl); padding: 3rem; text-align: center; box-shadow: var(--shadow-lg); border: 1px solid rgba(212,181,106,.2); }

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(212,181,106,.35); }
.hero, [class*="hero"], section:first-of-type { background: radial-gradient(ellipse at top, #241f4a 0%, #0f0f1a 70%); }
.card { border-left: 3px solid var(--color-accent); }
header, .header, .navbar { box-shadow: 0 4px 12px rgba(15,15,26,.35), 0 1px 0 rgba(212,181,106,.12); background: rgba(15,15,26,.85); backdrop-filter: blur(12px); }

/* 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; }
}