/* CSSVariantEngine v3.0 — go-857tiyu-qq.com.cn */
/* Palette: indigo-rose gradient | Radius: soft symmetric | Shadow: layered dual-tone */
/* Spacing: uniform 24px gap | Transition: smooth long 0.5s */
/* Section layouts: {"news":"grid-4","features":"grid-3","hero":"centered","testimonials":"stacked","partners":"grid-6","faq":"single-column","stats":"inline","cta":"split"} */

:root {
    --color-primary: #6366f1;
    --color-primary-dark: #4338ca;
    --color-accent: #ec4899;
    --color-surface: #f5f3ff;
    --color-text: #1e1b4b;
    --rgb-primary: 99, 102, 241;
    --rgb-accent: 236, 72, 153;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 1px 3px rgba(99, 102, 241, 0.07), 0 2px 6px rgba(236, 72, 153, 0.04);
    --shadow-md: 0 4px 14px rgba(99, 102, 241, 0.13), 0 8px 28px rgba(236, 72, 153, 0.07);
    --shadow-lg: 0 10px 28px rgba(99, 102, 241, 0.18), 0 20px 56px rgba(236, 72, 153, 0.11);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1.5rem;
    --transition: 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
    --heading-weight: 700;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(135deg, #f5f3ff 0%, #fdf2f8 50%, #f0f9ff 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%); border: 1px solid transparent; border-image: linear-gradient(135deg, rgba(99,102,241,0.15), rgba(236,72,153,0.15)) 1 stretch; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(90deg, var(--color-primary), var(--color-accent)); color: #ffffff; border: none; }
a:not([class]) { color: var(--color-primary); transition: var(--transition); background-image: linear-gradient(var(--color-accent), var(--color-accent)); background-size: 0% 2px; background-repeat: no-repeat; background-position: bottom left; }
a:not([class]):hover { background-size: 100% 2px; }

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

/* news: grid-4 */
/* 四列紧凑网格 */
                .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 0.8); }

/* 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: 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: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); background: linear-gradient(145deg, #ffffff 0%, #fef7ff 100%); }
.card { border-left: 3px solid transparent; border-image: linear-gradient(180deg, var(--color-primary), var(--color-accent)) 1; }
header, .header, .navbar { box-shadow: 0 2px 18px rgba(99, 102, 241, 0.09); background: linear-gradient(180deg, rgba(255,255,255,0.92) 0%, rgba(248,250,252,0.88) 100%); backdrop-filter: blur(10px); }

/* 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: 1.125rem; }
    .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; }
}