/* CSSVariantEngine v3.0 — pc2-xingkongapp.com.cn */
/* Palette: slate-indigo | Radius: compact | Shadow: layered-gradient */
/* Spacing: tight | Transition: smooth-long */
/* Section layouts: {"news":"grid-4","features":"grid-3","hero":"left-aligned","testimonials":"carousel","partners":"centered","faq":"single-column","stats":"inline","cta":"centered"} */

:root {
    --color-primary: #334155;
    --color-primary-dark: #0b1220;
    --color-accent: #3b82f6;
    --color-accent-2: #8b5cf6;
    --color-surface: #e2e8f0;
    --color-text: #0d1526;
    --rgb-primary: 51,65,85;
    --rgb-accent: 59,130,246;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 22px;
    --shadow-sm: 0 1px 2px rgba(13,21,38,0.07), 0 1px 1px rgba(59,130,246,0.07);
    --shadow-md: 0 2px 4px rgba(13,21,38,0.06), 0 10px 20px -8px rgba(37,99,235,0.20), 0 22px 44px -22px rgba(59,130,246,0.32);
    --shadow-lg: 0 4px 10px rgba(13,21,38,0.08), 0 22px 44px -14px rgba(37,99,235,0.30), 0 40px 80px -32px rgba(139,92,246,0.38);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.8rem;
    --transition: 0.5s cubic-bezier(0.22, 1, 0.36, 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-color: #eef2f8;
    background-image:
        radial-gradient(1200px 620px at 10% -12%, rgba(59,130,246,0.22), rgba(59,130,246,0) 62%),
        radial-gradient(900px 520px at 102% 0%, rgba(139,92,246,0.18), rgba(139,92,246,0) 58%),
        linear-gradient(170deg, #f8fafc 0%, #eef2f8 42%, #dde5f0 100%);
    background-attachment: fixed;
    caret-color: var(--color-accent);
    accent-color: var(--color-accent);
}
h1, h2, h3, h4 {
    font-weight: var(--heading-weight);
    color: var(--color-primary-dark);
    text-shadow: 0 1px 0 rgba(255,255,255,0.7), 0 10px 24px rgba(59,130,246,0.14);
}
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), inset 0 0 0 1px rgba(59,130,246,0.12);
    padding: var(--space-card);
    transition: var(--transition);
    background-color: #ffffff;
    background-image: linear-gradient(155deg, #ffffff 0%, #f7faff 44%, #e9f0ff 78%, #e3ebff 100%);
    color: var(--color-primary-dark);
    caret-color: var(--color-accent);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    background-color: var(--color-accent);
    background-image: linear-gradient(135deg, #60a5fa 0%, #3b82f6 48%, #6366f1 100%);
    color: #f8fbff;
    box-shadow: 0 1px 2px rgba(13,21,38,0.10), 0 8px 18px -8px rgba(59,130,246,0.45);
    text-shadow: 0 1px 1px rgba(13,21,38,0.28);
}
a:not([class]) {
    color: var(--color-accent);
    transition: var(--transition);
    text-shadow: 0 1px 0 rgba(255,255,255,0.6);
}

/* ========== 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: left-aligned */
.hero-content { text-align: left; max-width: 600px; }

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list { display: flex; overflow: hidden; } 
                .testimonial-list > * { flex: 0 0 100%; }

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }

/* 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: 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:hover, [class*="card"]:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg), inset 0 0 0 1px rgba(99,102,241,0.26);
    background-image: linear-gradient(155deg, #ffffff 0%, #f2f7ff 40%, #e0eaff 76%, #d8e4ff 100%);
}
a:not([class]):hover { color: var(--color-accent-2); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover {
    box-shadow: 0 2px 6px rgba(13,21,38,0.12), 0 14px 30px -10px rgba(99,102,241,0.55);
    background-image: linear-gradient(135deg, #818cf8 0%, #4f46e5 52%, #3b82f6 100%);
}
header, .header, .navbar {
    background: linear-gradient(180deg, rgba(255,255,255,0.92) 0%, rgba(240,245,252,0.72) 60%, rgba(226,235,248,0.55) 100%);
    backdrop-filter: blur(12px) saturate(140%);
    -webkit-backdrop-filter: blur(12px) saturate(140%);
    box-shadow: 0 1px 0 rgba(59,130,246,0.14), 0 12px 28px -18px rgba(13,21,38,0.35);
}

/* 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; }
}