/* CSSVariantEngine v3.0 — chengrengame.com.cn */
/* Palette: teal-lime | Radius: minimal | Shadow: none */
/* Spacing: balanced | Transition: smooth-fast */
/* Section layouts: {"news":"masonry-2","features":"grid-3","hero":"left-aligned","testimonials":"stacked","partners":"scroll","faq":"two-column","stats":"grid-3","cta":"centered"} */

:root {
    --color-primary: #0d9488;
    --color-primary-dark: #0f766e;
    --color-accent: #84cc16;
    --color-surface: #f8fafc;
    --color-text: #0f172a;
    --rgb-primary: 13, 148, 136;
    --rgb-accent: 132, 204, 22;
    --radius-sm: 2px;
    --radius-md: 3px;
    --radius-lg: 4px;
    --radius-xl: 6px;
    --shadow-sm: none;
    --shadow-md: none;
    --shadow-lg: none;
    --space-section: 2.5rem;
    --space-card: 1.25rem;
    --space-gap: 1.5rem;
    --transition: 0.2s ease-out;
    --heading-weight: 700;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: var(--color-surface); }
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); border: 1px solid #e2e8f0; background-color: #ffffff; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background-color: var(--color-primary); color: white; border: 2px solid var(--color-primary); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { background-color: var(--color-primary-dark); border-color: var(--color-primary-dark); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration: none; border-bottom: 2px solid transparent; }
a:not([class]):hover { border-bottom-color: var(--color-primary); }

/* ========== 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: 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: stacked */
/* 垂直堆叠 */
.testimonial-list { display: flex; flex-direction: column; gap: var(--space-gap); max-width: 720px; margin: 0 auto; }

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

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }

/* 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: none; box-shadow: var(--shadow-lg); background-color: #f1f5f9; border-color: 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: 1.5rem; }
    .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; }
}