:/* CSSVariantEngine v3.0 — sun-kai-yun.com */
/* Palette: teal-royal | Radius: soft-squircle | Shadow: layered-multicolor */
/* Spacing: tight | Transition: luxe-smooth */
/* Section layouts: {"news":"featured-left","features":"grid-4","hero":"left-aligned","testimonials":"stacked","partners":"scroll","faq":"single-column","stats":"inline","cta":"split"} */

:root {
    --color-primary: #0f766e;
    --color-primary-dark: #134e4a;
    --color-accent: #5eead4;
    --color-surface: #f0fdfa;
    --color-text: #042f2e;
    --rgb-primary: 15,118,110;
    --rgb-accent: 94,234,212;
    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 26px;
    --radius-xl: 36px;
    --shadow-sm: 0 2px 8px rgba(15,118,110,0.06), 0 1px 2px rgba(15,118,110,0.04);
    --shadow-md: 0 6px 20px rgba(15,118,110,0.12), 0 2px 6px rgba(15,118,110,0.08), 0 0 0 1px rgba(94,234,212,0.1);
    --shadow-lg: 0 12px 36px rgba(15,118,110,0.18), 0 4px 12px rgba(15,118,110,0.1), 0 0 0 1px rgba(94,234,212,0.15);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.5s cubic-bezier(0.22, 1, 0.36, 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(160deg, #f0fdfa 0%, #ccfbf1 50%, #f0fdfa 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); border: 1px solid transparent; background: linear-gradient(145deg, #ffffff 0%, #f0fdfa 100%); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); box-shadow: 0 2px 8px rgba(15,118,110,0.1), 0 0 0 1px rgba(94,234,212,0.2); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration: none; background-image: linear-gradient(90deg, var(--color-primary), var(--color-accent)); background-size: 100% 2px; background-position: 0 100%; background-repeat: no-repeat; }

/* ========== 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: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 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 20s linear infinite; }
                @keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }

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

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); background-image: linear-gradient(90deg, var(--color-accent), #99f6e4); }
.hero, [class*="hero"], section:first-of-type { background: radial-gradient(ellipse at 20% 20%, #134e4a 0%, #0f766e 40%, #115e59 75%, #134e4a 100%), linear-gradient(135deg, #0f766e, #134e4a); box-shadow: inset 0 1px 0 rgba(94,234,212,0.2), inset 0 -1px 0 rgba(0,0,0,0.1); }
.card { border-image: linear-gradient(135deg, rgba(94,234,212,0.4), rgba(15,118,110,0.1) 50%, rgba(94,234,212,0.3)) 1; border: 1px solid transparent; }
.card:hover, [class*="card"]:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }

/* 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; }
}