/* CSSVariantEngine v3.0 — boqiutiyu.net.cn */
/* Palette: tropical teal & tangerine | Radius: generous | Shadow: multi-layer soft */
/* Spacing: mixed tight-loose | Transition: smooth ease */
/* Section layouts: {"news":"masonry-2","features":"grid-2","hero":"overlay","testimonials":"stacked","partners":"scroll","faq":"two-column","stats":"big-number","cta":"split"} */

:root {
    --color-primary: #0f766e;
    --color-primary-dark: #0d5d57;
    --color-accent: #f97316;
    --color-surface: #f0fdfa;
    --color-text: #134e4a;
    --rgb-primary: 15, 118, 110;
    --rgb-accent: 249, 115, 22;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 6px rgba(var(--rgb-primary), 0.04), 0 1px 3px rgba(0,0,0,0.03);
    --shadow-md: 0 4px 12px rgba(var(--rgb-primary), 0.06), 0 12px 28px -8px rgba(0,0,0,0.09);
    --shadow-lg: 0 6px 16px rgba(var(--rgb-primary), 0.07), 0 24px 48px -12px rgba(0,0,0,0.14);
    --space-section: 3.25rem;
    --space-card: 1.4rem;
    --space-gap: 1.1rem;
    --transition: 0.4s ease;
    --heading-weight: 700;
    --body-line-height: 1.7;
}

/* 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); background-color: #ffffff; border-color: rgba(var(--rgb-accent), 0.15); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background-color: var(--color-primary); color: white; border-color: var(--color-primary-dark); }
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); background: #fff7ed; border: 1px solid rgba(249, 115, 22, 0.2); }

/* features: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }
.features-section { background-color: #ecfdf5; }

/* hero: overlay */
/* 全屏背景+文字覆盖 */
                .hero { position: relative; min-height: 70vh; display: flex; align-items: center; background: linear-gradient(135deg, #0f766e 0%, #14b8a6 100%); }
                .hero-content { position: relative; z-index: 1; color: white; text-shadow: 0 2px 10px rgba(0,0,0,0.15); }

/* testimonials: stacked */
/* 垂直堆叠 */
                .testimonial-list { display: flex; flex-direction: column; gap: var(--space-gap); max-width: 720px; margin: 0 auto; }
                .testimonials-section { background-color: #f0f9ff; }

/* partners: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 24s linear infinite; }
                .partners-section { background-color: #fef3c7; }
                @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); }
.faq-section { background-color: #ffffff; }

/* 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-accent); }
                .stats-section { background-color: #f0fdfa; }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; background: linear-gradient(135deg, #f97316 0%, #ea580c 100%); padding: 3rem; border-radius: var(--radius-xl); }
.cta-section { background-color: #fff7ed; }

/* Page Layout: wide */
/* 超宽 */
            .page-main { max-width: 1400px; margin: 0 auto; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(var(--rgb-accent), 0.4); }
a:not([class]):hover { color: var(--color-accent); }
.card { border: 1px solid rgba(var(--rgb-primary), .12); }
header, .header, .navbar { background: rgba(255,255,255,0.85); 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; }
}