/* CSSVariantEngine v3.0 — world5-ai-youxi.com.cn */
/* Palette: sage | Radius: medium | Shadow: glow */
/* Spacing: generous | Transition: smooth */
/* Section layouts: {"news":"featured-left","features":"centered","hero":"left-aligned","testimonials":"masonry","partners":"scroll","faq":"two-column","stats":"grid-3","cta":"full-bg"} */

:root {
    --color-primary: #5f7a54;
    --color-primary-dark: #3f5237;
    --color-accent: #87a878;
    --color-surface: #faf8f3;
    --color-text: #2d2d2d;
    --rgb-primary: 95,122,84;
    --rgb-accent: 135,168,120;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 22px;
    --shadow-sm: 0 1px 3px rgba(45,45,45,0.04), 0 0 0 1px rgba(135,168,120,0.05);
    --shadow-md: 0 6px 18px rgba(45,45,45,0.07), 0 0 20px rgba(135,168,120,0.15);
    --shadow-lg: 0 14px 34px rgba(45,45,45,0.12), 0 0 36px rgba(135,168,120,0.32);
    --space-section: 3.5rem;
    --space-card: 1.4rem;
    --space-gap: 1.15rem;
    --transition: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    --heading-weight: 600;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body { background: var(--color-surface); color: var(--color-text); line-height: var(--body-line-height); }
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); animation: cardPulse 7s ease-in-out infinite; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

@keyframes cardPulse {
    0%, 100% { box-shadow: var(--shadow-md); }
    50% { box-shadow: 0 6px 22px rgba(45,45,45,0.09), 0 0 28px rgba(135,168,120,0.26); }
}

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

/* news: featured-left */
/* 左大右小 (1大+2小) */
                .news-grid { display: grid; grid-template-columns: 2fr 1fr; grid-template-rows: auto auto; gap: var(--space-gap); }
                .news-grid > *:first-child { grid-row: span 2; }

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

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
                .testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }

/* partners: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 26s ease-in-out 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: full-bg */
.cta-section { background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 60%, var(--color-accent) 100%); color: #faf8f3; padding: 4rem 2rem; box-shadow: var(--shadow-lg); }

/* 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(-4px); box-shadow: var(--shadow-lg); animation: none; }
.card { border: 1px solid rgba(var(--rgb-accent), .22); }

/* 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: 2.2rem; --space-card: 1.1rem; --space-gap: 0.85rem; }
    .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; }
}