/* CSSVariantEngine v3.0 — zh-c7c7app.gd.cn */
/* Palette: gradient-stripe | Radius: soft-rounded | Shadow: multi-layer gradient */
/* Spacing: airy | Transition: smooth-cubic */
/* Section layouts: {"news":"featured-top","features":"centered","hero":"centered","testimonials":"masonry","partners":"grid-6","faq":"two-column","stats":"grid-4","cta":"centered"} */

:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1e40af;
    --color-accent: #f97316;
    --color-surface: #fffbeb;
    --color-text: #1e293b;
    --rgb-primary: 37, 99, 235;
    --rgb-accent: 249, 115, 22;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 2px 10px rgba(var(--rgb-primary), 0.12), 0 1px 3px rgba(var(--rgb-accent), 0.06);
    --shadow-md: 0 6px 22px rgba(var(--rgb-primary), 0.10), 0 3px 8px rgba(var(--rgb-accent), 0.07);
    --shadow-lg: 0 12px 45px rgba(var(--rgb-primary), 0.15), 0 5px 15px rgba(var(--rgb-accent), 0.1);
    --space-section: 4.5rem;
    --space-card: 1.1rem;
    --space-gap: 0.8rem;
    --transition: 0.55s cubic-bezier(0.25, 0.1, 0.25, 1);
    --heading-weight: 800;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body { 
    color: var(--color-text); 
    line-height: var(--body-line-height);
    background: linear-gradient(180deg, #ffffff 0%, #fffbeb 100%);
}
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section, .section { 
    padding-top: var(--space-section); 
    padding-bottom: var(--space-section);
    width: 100%;
}
.hero-section {
    background: linear-gradient(180deg, #eff6ff 0%, #dbeafe 100%);
}
.features-section {
    background: linear-gradient(180deg, #fffbeb 0%, #fef3c7 100%);
}
.testimonials-section {
    background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
    color: #f8fafc;
}
.partners-section {
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}
.faq-section {
    background: linear-gradient(180deg, #f0f9ff 0%, #e0f2fe 100%);
}
.stats-section {
    background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
    color: #f8fafc;
}
.cta-section {
    background: linear-gradient(90deg, #2563eb 0%, #7c3aed 50%, #ec4899 100%);
}
.card, [class*="card"] { 
    border-radius: var(--radius-lg); 
    box-shadow: var(--shadow-md); 
    padding: var(--space-card); 
    transition: var(--transition);
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
}
.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: var(--transition);
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: white;
}
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover {
    background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-primary) 100%);
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

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

/* news: featured-top */
/* 首篇横跨全宽 */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
.news-grid > *:first-child { grid-column: span 3; }

/* 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: 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: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }

/* 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 */
.card:hover, [class*="card"]:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card { 
    border: 1px solid transparent;
    border-image: linear-gradient(135deg, rgba(var(--rgb-primary), 0.2), rgba(var(--rgb-accent), 0.2)) 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: 2.1rem; --space-card: 1rem; --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; }
}