/* CSSVariantEngine v3.0 — go-huatihui.cn */
/* Palette: gradient-strips | Radius: soft-rounded | Shadow: multi-layer gradient tinted */
/* Spacing: generous | Transition: smooth-long */
/* Section layouts: {"news":"featured-left","features":"grid-3","hero":"centered","testimonials":"masonry","partners":"grid-4","faq":"with-sidebar","stats":"grid-4","cta":"centered"} */

:root {
    --color-primary: #165DFF;
    --color-primary-dark: #0c39b8;
    --color-accent: #FFB74D;
    --color-surface: #FFFBEB;
    --color-text: #1e293b;
    --rgb-primary: 22, 93, 255;
    --rgb-accent: 255, 183, 77;
    --radius-sm: 4px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 2px 4px rgba(var(--rgb-primary), 0.07), 0 1px 2px rgba(var(--rgb-accent), 0.05);
    --shadow-md: 0 6px 12px rgba(var(--rgb-primary), 0.1), 0 3px 6px rgba(var(--rgb-accent), 0.07);
    --shadow-lg: 0 12px 24px rgba(var(--rgb-primary), 0.12), 0 6px 12px rgba(var(--rgb-accent), 0.08), 0 2px 4px rgba(0,0,0,0.04);
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;
    --transition: 0.55s cubic-bezier(0.25, 0.1, 0.25, 1);
    --heading-weight: 600;
    --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%, #f8fafc 100%); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); background: linear-gradient(180deg, #ffffff 0%, transparent 100%); }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); background: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%); border: 1px solid transparent; border-image: linear-gradient(135deg, rgba(var(--rgb-primary), 0.12), rgba(var(--rgb-accent), 0.12)) 1 stretch; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background-image: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%); color: white; box-shadow: var(--shadow-sm); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration-thickness: 2px; text-underline-offset: 3px; }

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

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

/* 条件性装饰 */
.card { border: 1px solid rgba(var(--rgb-primary), .08); }
header, .header, .navbar { box-shadow: 0 4px 12px rgba(var(--rgb-primary), 0.08), 0 2px 6px rgba(0,0,0,0.03); background: linear-gradient(180deg, #ffffff 0%, #fefefe 100%); backdrop-filter: blur(8px); }

/* 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: 2.5rem; --space-card: 1.2rem; --space-gap: 0.9rem; }
    .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; }
}