/* CSSVariantEngine v3.0 — mobile6-ml.com.cn */
/* Palette: indigo-teal | Radius: compact | Shadow: layered */
/* Spacing: balanced | Transition: smooth */
/* Section layouts: {"news":"masonry-2","features":"grid-2","hero":"centered","testimonials":"grid-3","partners":"grid-4","faq":"single-column","stats":"grid-4","cta":"full-bg"} */

:root {
    --color-primary: #4f46e5;
    --color-primary-dark: #4338ca;
    --color-accent: #0d9488;
    --color-surface: #f8fafc;
    --color-text: #1e293b;
    --rgb-primary: 79,70,229;
    --rgb-accent: 13,148,136;
    --radius-sm: 6px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 1px 2px rgba(15,23,42,.06), 0 2px 8px rgba(79,70,229,.06);
    --shadow-md: 0 2px 4px rgba(15,23,42,.05), 0 8px 24px rgba(79,70,229,.10);
    --shadow-lg: 0 4px 12px rgba(15,23,42,.06), 0 20px 40px rgba(79,70,229,.16);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.6s cubic-bezier(0.4, 0, 0.2, 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: linear-gradient(180deg, #f8fafc 0%, #eef2ff 100%);
}
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: var(--color-text); }
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);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: #fff;
}
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);
    border-radius: var(--radius-xl);
    background:
        linear-gradient(145deg, rgba(var(--rgb-accent), .08), rgba(var(--rgb-primary), .04)) padding-box,
        linear-gradient(135deg, rgba(var(--rgb-accent), .55), rgba(var(--rgb-primary), .3)) border-box;
}

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

/* hero: centered */
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }

/* testimonials: grid-3 */
.testimonial-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 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: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }

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

/* cta: full-bg */
.cta-section {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 45%, var(--color-accent) 100%);
    color: #fff;
    padding: 4rem 2rem;
    box-shadow: 0 20px 60px rgba(79,70,229,.25);
}

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg), 0 0 0 1px rgba(var(--rgb-accent), .18);
}
.card {
    border: 1px solid transparent;
    background:
        linear-gradient(145deg, rgba(var(--rgb-primary), .04), rgba(var(--rgb-accent), .06)) padding-box,
        linear-gradient(135deg, rgba(var(--rgb-accent), .5), rgba(var(--rgb-primary), .3)) border-box;
}

/* 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; }
}