/* CSSVariantEngine v3.0 — 6ttiyu.sc.cn */
/* Palette: teal-lavender | Radius: soft rounded | Shadow: multi-layer gradient-tinted */
/* Spacing: comfortable | Transition: smooth long */
/* Section layouts: {"news":"featured-left","features":"grid-4","hero":"split","testimonials":"masonry","partners":"scroll","faq":"single-column","stats":"inline","cta":"split"} */

:root {
    --color-primary: #0d9488;
    --color-primary-dark: #115e59;
    --color-accent: #a78bfa;
    --color-surface: linear-gradient(120deg, #fffbeb 0%, #fef3c7 100%);
    --color-text: #0f172a;
    --rgb-primary: 13, 148, 136;
    --rgb-accent: 167, 139, 250;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 4px rgba(var(--rgb-primary), 0.07), 0 1px 2px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08), 0 2px 6px rgba(var(--rgb-primary), 0.05);
    --shadow-lg: 0 10px 25px rgba(15, 23, 42, 0.1), 0 4px 10px rgba(var(--rgb-accent), 0.07);
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;
    --transition: 0.55s cubic-bezier(0.25, 0.1, 0.25, 1);
    --heading-weight: 600;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(180deg, #ffffff 0%, #fafafa 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, #f8fafc); border: 1px solid transparent; border-image: linear-gradient(135deg, rgba(var(--rgb-primary), 0.1), rgba(var(--rgb-accent), 0.15)) 1; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark)); color: white; border: none; }
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

/* ========== 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: split */
/* 左文右图 */
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center; }

/* 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 24s 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: narrow-centered */
/* 窄版居中 */
.page-main { max-width: 860px; margin: 0 auto; }

/* 条件性装饰 */
a:not([class]):hover { color: #7c3aed; text-shadow: 0 0 2px rgba(var(--rgb-accent), 0.3); }
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(180deg, #0d9488 0%, #0f766e 40%, #115e59 100%); color: white; }
header, .header, .navbar { box-shadow: 0 4px 16px rgba(var(--rgb-primary), 0.1), 0 1px 4px rgba(15, 23, 42, 0.06); background: linear-gradient(180deg, #ffffff, #f8fafc); }
section:nth-child(even) { background: var(--color-surface); }
section:nth-child(4n) { background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%); color: #f8fafc; }

/* 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; }
}