/* CSSVariantEngine v3.0 — zh-k1tiyu.com.cn */
/* Palette: emerald-amber | Radius: soft-rounded | Shadow: dual-tint gradient */
/* Spacing: symmetric | Transition: smooth-long */
/* Section layouts: {"news":"grid-3","features":"grid-2","hero":"centered","testimonials":"stacked","partners":"grid-4","faq":"with-sidebar","stats":"big-number","cta":"full-bg"} */

:root {
    --color-primary: #10b981;
    --color-primary-dark: #059669;
    --color-accent: #f59e0b;
    --color-surface: #fef7ed;
    --color-text: #1f2937;
    --rgb-primary: 16,185,129;
    --rgb-accent: 245,158,11;
    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 28px;
    --radius-xl: 36px;
    --shadow-sm: 0 3px 10px rgba(var(--rgb-primary),.15), 0 1px 3px rgba(var(--rgb-accent),.08);
    --shadow-md: 0 6px 20px rgba(var(--rgb-primary),.12), 0 2px 8px rgba(var(--rgb-accent),.1);
    --shadow-lg: 0 12px 40px rgba(var(--rgb-primary),.1), 0 4px 16px rgba(var(--rgb-accent),.12);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.55s cubic-bezier(0.25, 0.1, 0.25, 1);
    --heading-weight: 600;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { 
    color: var(--color-text); 
    line-height: var(--body-line-height);
    background: radial-gradient(circle at top left, #f0fdf4 0%, #fef7ed 100%);
}
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);
    background: linear-gradient(145deg, #ffffff, #fffbeb);
    border: 2px solid transparent;
    border-image: linear-gradient(135deg, rgba(var(--rgb-primary), 0.25), rgba(var(--rgb-accent), 0.25)) 1;
}
.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: var(--transition);
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

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

/* news: grid-3 */
/* 三列等宽网格 */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* 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: 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: with-sidebar */
/* FAQ 左 + 联系信息右 */
.faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }

/* 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; background: linear-gradient(135deg, var(--color-primary), var(--color-accent)); -webkit-background-clip: text; color: transparent; }

/* cta: full-bg */
.cta-section { 
    background: linear-gradient(90deg, #f59e0b 0%, #f97316 50%, #ea580c 100%); 
    color: #fff; 
    padding: 4rem 2rem; 
}

/* 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); 
    border-image: linear-gradient(135deg, rgba(var(--rgb-primary), 0.6), rgba(var(--rgb-accent), 0.6)) 1;
}
a:not([class]):hover { color: var(--color-accent); }
.hero, [class*="hero"], section:first-of-type { 
    background: linear-gradient(135deg, #10b981 0%, #059669 40%, #047857 100%); 
}
.card { border: 1px solid rgba(var(--rgb-primary), .08); }
header, .header, .navbar { 
    background: linear-gradient(180deg, rgba(255,255,255,0.9), rgba(255,251,235,0.7)); 
    backdrop-filter: blur(12px); 
}

/* 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; }
}