/* CSSVariantEngine v3.0 — zh-bifensite.net.cn */
/* Palette: soft-blue | Radius: rounded-large | Shadow: soft-multi-layer */
/* Spacing: spacious | Transition: smooth */
/* Section layouts: {"news":"list-view","features":"grid-3","hero":"split","testimonials":"grid-3","partners":"grid-4","faq":"with-sidebar","stats":"inline","cta":"card-style"} */

:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-accent: #bfdbfe;
    --color-surface: #f8fafc;
    --color-text: #1e293b;
    --rgb-primary: 37,99,235;
    --rgb-accent: 191,219,254;
    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 22px;
    --radius-xl: 28px;
    --shadow-sm: 0 2px 6px rgba(0,0,0,0.04), 0 1px 3px rgba(0,0,0,0.02);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.05), 0 12px 24px rgba(0,0,0,0.07);
    --shadow-lg: 0 6px 12px rgba(0,0,0,0.06), 0 20px 40px -10px rgba(0,0,0,0.12);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.45s ease-out;
    --heading-weight: 800;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: #f1f5f9; }
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] { background-color: white; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

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

/* news: list-view */
/* 列表模式 (图左文右) */
.news-grid { display: flex; flex-direction: column; gap: var(--space-gap); }
.news-grid .card { display: grid; grid-template-columns: 280px 1fr; }

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

/* hero: split */
/* 左文右图 */
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center; }

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

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }

/* 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: card-style */
.cta-inner { background: linear-gradient(135deg, var(--color-accent), white); border-radius: var(--radius-xl); padding: 3rem; text-align: center; }

/* 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); }
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #3b82f6, #6366f1); }
.card { border-left: 3px solid var(--color-primary); }
header, .header, .navbar { background-color: white; box-shadow: 0 2px 12px rgba(var(--rgb-primary), 0.08); }

/* 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; }
}