/* CSSVariantEngine v3.0 — go-wangcai28.org.cn */
/* Palette: sidebar-classic | Radius: soft rounded | Shadow: multi-layer gradient tinted */
/* Spacing: comfortable | Transition: smooth long curve */
/* Section layouts: {"news":"featured-left","features":"grid-2","hero":"overlay","testimonials":"masonry","partners":"scroll","faq":"with-sidebar","stats":"big-number","cta":"card-style"} */

:root {
    --color-primary: #165DFF;
    --color-primary-dark: #0E42D2;
    --color-accent: #36CBCB;
    --color-surface: #f0f4f8;
    --color-text: #1e293b;
    --rgb-primary: 22, 93, 255;
    --rgb-accent: 54, 203, 203;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --shadow-sm: 0 1px 3px rgba(22, 93, 255, 0.12), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(22, 93, 255, 0.15), 0 2px 6px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(22, 93, 255, 0.18), 0 4px 12px rgba(37, 46, 58, 0.1);
    --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: 800;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(180deg, #f7f9fc 0%, #edf2f7 100%); min-height: 100vh; }
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: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%); color: white; border: none; }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 100%); transform: translateY(-2px); box-shadow: var(--shadow-lg); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); }
a:not([class]):hover { color: var(--color-accent); }

/* ========== 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; background: linear-gradient(135deg, #ffffff 0%, #f0f7ff 100%); }

/* features: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }

/* hero: overlay */
/* 全屏背景+文字覆盖 */
.hero { position: relative; min-height: 70vh; display: flex; align-items: center; background: radial-gradient(circle at 20% 30%, rgba(54, 203, 203, 0.15) 0%, transparent 50%), linear-gradient(180deg, #f8fafc 0%, #e2e8f0 100%); }
.hero-content { position: relative; z-index: 1; }

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

/* partners: scroll */
/* 自动滚动 */
.partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 24s linear infinite; }
@keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
.faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }
.faq-wrapper > *:last-child { background: linear-gradient(180deg, #252e3a 0%, #3a4b63 100%); color: #f8fafc; border-radius: var(--radius-lg); padding: var(--space-card); box-shadow: var(--shadow-lg); }

/* 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; background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%); -webkit-background-clip: text; background-clip: text; color: transparent; font-weight: 700; }

/* cta: card-style */
.cta-inner { background: linear-gradient(135deg, #252e3a 0%, #3a4b63 45%, var(--color-primary) 100%); border-radius: var(--radius-xl); padding: 3rem; text-align: center; color: white; box-shadow: var(--shadow-lg); }

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

/* 条件性装饰 */
.card { border: 2px solid transparent; border-image: linear-gradient(135deg, rgba(var(--rgb-primary), 0.2) 0%, rgba(var(--rgb-accent), 0.2) 100%) 1; }
header, .header, .navbar { box-shadow: 0 4px 16px rgba(37, 46, 58, 0.12), 0 2px 8px rgba(var(--rgb-primary), 0.08); background: linear-gradient(180deg, #ffffff 0%, #f8fafc 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: 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; }
}