/* CSSVariantEngine v3.0 — global5-aitiyu.com.cn */
/* Palette: indigo-violet | Radius: soft | Shadow: layered-glow */
/* Spacing: balanced | Transition: smooth */
/* Section layouts: {"news":"masonry-2","features":"centered","hero":"centered","testimonials":"stacked","partners":"grid-4","faq":"two-column","stats":"big-number","cta":"split"} */

:root {
    --color-primary: #4f46e5;
    --color-primary-dark: #3730a3;
    --color-accent: #f59e0b;
    --color-surface: #f4f4ff;
    --color-text: #1c1b33;
    --rgb-primary: 79,70,229;
    --rgb-accent: 245,158,11;
    --color-violet: #7c3aed;
    --color-teal: #0d9488;
    --color-line: rgba(99,102,241,0.22);
    --radius-sm: 4px;
    --radius-md: 10px;
    --radius-lg: 15px;
    --radius-xl: 21px;
    --shadow-sm: 0 1px 2px rgba(55,48,163,0.07), 0 3px 8px -3px rgba(79,70,229,0.10);
    --shadow-md: 0 2px 5px -1px rgba(55,48,163,0.10), 0 10px 24px -10px rgba(79,70,229,0.22), 0 0 0 1px rgba(129,140,248,0.10);
    --shadow-lg: 0 8px 18px -8px rgba(55,48,163,0.26), 0 26px 48px -18px rgba(124,58,237,0.30), 0 0 0 1px rgba(245,158,11,0.18);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.45s cubic-bezier(0.22, 0.61, 0.36, 1);
    --heading-weight: 700;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background-color: #f5f5ff;
    background-image: linear-gradient(158deg, #ffffff 0%, #f2f1ff 34%, #e9ebff 58%, #fdf6ec 100%);
    caret-color: var(--color-primary);
    accent-color: var(--color-primary);
}
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: var(--color-primary-dark); }
section, .section {
    padding-top: var(--space-section);
    padding-bottom: var(--space-section);
    background-image: radial-gradient(120% 90% at 50% 0%, rgba(99,102,241,0.07) 0%, rgba(124,58,237,0.03) 42%, rgba(255,255,255,0) 72%);
}
.card, [class*="card"] {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--space-card);
    transition: var(--transition);
    background-color: #ffffff;
    background-image: linear-gradient(145deg, #ffffff 0%, #f8f7ff 42%, #eef0ff 78%, #f7f2ff 100%);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    background-color: var(--color-primary);
    background-image: linear-gradient(135deg, #818cf8 0%, #4f46e5 46%, #3730a3 100%);
    color: #ffffff;
    border-color: rgba(55,48,163,0.35);
    box-shadow: 0 1px 2px rgba(55,48,163,0.20), 0 10px 20px -12px rgba(79,70,229,0.60);
    caret-color: #ffffff;
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

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

/* news: masonry-2 */
/* 两列瀑布流 */
                .news-grid { column-count: 2; column-gap: var(--space-gap); }
                .news-grid .card { break-inside: avoid; margin-bottom: var(--space-gap); }

/* features: centered */
/* 居中大卡片 */
                .feature-list { display: flex; flex-direction: column; align-items: center; gap: calc(var(--space-gap) * 2); max-width: 720px; margin: 0 auto; }

/* hero: centered */
.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    background-image: radial-gradient(90% 80% at 50% 0%, rgba(124,58,237,0.10) 0%, rgba(245,158,11,0.06) 55%, rgba(255,255,255,0) 100%);
}

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

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }

/* 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;
                    color: var(--color-primary-dark);
                    text-shadow: 0 1px 0 rgba(255,255,255,0.85), 0 10px 24px rgba(79,70,229,0.28);
                }

/* cta: split */
.cta-inner {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 2rem;
    border-radius: var(--radius-xl);
    background-color: var(--color-surface);
    background-image: linear-gradient(115deg, rgba(79,70,229,0.12) 0%, rgba(124,58,237,0.09) 45%, rgba(245,158,11,0.12) 100%);
    box-shadow: inset 0 0 0 1px rgba(99,102,241,0.16), 0 12px 30px -18px rgba(55,48,163,0.35);
    outline-color: rgba(245,158,11,0.35);
}

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
            .page-main { max-width: 1200px; margin: 0 auto; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    background-image: linear-gradient(145deg, #ffffff 0%, #f3f2ff 38%, #e8ebff 72%, #fbf3e8 100%);
}
a:not([class]):hover { color: var(--color-accent); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover {
    background-image: linear-gradient(135deg, #fbbf24 0%, #f59e0b 48%, #b45309 100%);
    border-color: rgba(180,83,9,0.35);
}
.card { border-left: 3px solid var(--color-primary); }

/* 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; }
}