/* CSSVariantEngine v3.0 — sx-jiuyouhui.sx.cn */
/* Palette: teal harmony | Radius: medium | Shadow: glow */
/* Spacing: uniform 24px | Transition: smooth */
/* Section layouts: {"news":"masonry-2","features":"grid-3","hero":"centered","testimonials":"grid-3","partners":"scroll","faq":"with-sidebar","stats":"big-number","cta":"centered"} */

:root {
    --color-primary: #0f766e;
    --color-primary-dark: #0d5d57;
    --color-accent: #2dd4bf;
    --color-surface: #ecfdf5;
    --color-text: #061a18;
    --rgb-primary: 15, 118, 110;
    --rgb-accent: 45, 212, 191;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --shadow-sm: 0 0 8px rgba(var(--rgb-accent), 0.15);
    --shadow-md: 0 0 16px rgba(var(--rgb-accent), 0.25), 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 0 24px rgba(var(--rgb-accent), 0.4), 0 4px 8px rgba(0, 0, 0, 0.08);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 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-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: white; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background-color: var(--color-primary); color: white; animation: subtlePulse 3s ease-in-out infinite alternate; }
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); }

/* features: grid-3 */
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* hero: centered */
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }

/* testimonials: grid-3 */
.testimonial-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* partners: scroll */
/* 自动滚动 */
.partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 18s linear infinite; }
@keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* 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; color: var(--color-primary); }

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
.page-main { max-width: 1200px; margin: 0 auto; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-4px); box-shadow: 0 0 32px rgba(var(--rgb-accent), 0.6), 0 6px 12px rgba(0,0,0,0.1); border-color: var(--color-accent); }
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 0 8px rgba(var(--rgb-accent), 0.4); }
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #0f766e, #14b8a6); }
.card { border: 1px solid rgba(var(--rgb-accent), 0.12); }
header, .header, .navbar { background: transparent; backdrop-filter: blur(8px); }

@keyframes subtlePulse {
    0% { box-shadow: 0 0 12px rgba(var(--rgb-accent), 0.3); }
    100% { box-shadow: 0 0 20px rgba(var(--rgb-accent), 0.5); }
}

/* 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; }
}