/* CSSVariantEngine v3.0 — ivekbio.com */
/* Palette: warm-strips | Radius: medium-glow | Shadow: accent-halo */
/* Spacing: spacious | Transition: soft-pulse */
/* Section layouts: {"news":"masonry-2","features":"horizontal","hero":"minimal","testimonials":"carousel","partners":"centered","faq":"two-column","stats":"inline","cta":"full-bg"} */

:root {
    --color-primary: #0ea5e9;
    --color-primary-dark: #0284c7;
    --color-accent: #10b981;
    --color-surface: #fffbeb;
    --color-text: #1e293b;
    --rgb-primary: 14, 165, 233;
    --rgb-accent: 16, 185, 129;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --shadow-sm: 0 0 12px rgba(var(--rgb-accent), 0.25);
    --shadow-md: 0 0 24px rgba(var(--rgb-accent), 0.4);
    --shadow-lg: 0 0 32px rgba(var(--rgb-accent), 0.6);
    --space-section: 6rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.6s ease-in-out;
    --heading-weight: 700;
    --body-line-height: 1.65;
    caret-color: var(--color-accent);
    accent-color: var(--color-primary);
}

@keyframes subtle-pulse {
    0%, 100% { box-shadow: var(--shadow-sm); }
    50% { box-shadow: 0 0 18px rgba(var(--rgb-accent), 0.32); }
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: #ffffff; }
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
section:nth-child(even) { background-color: var(--color-surface); }
section:nth-child(4n) { background-color: #0f172a; color: #f8fafc; }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); padding: var(--space-card); transition: var(--transition); border: 1px solid #e2e8f0; background-color: #ffffff; animation: subtle-pulse 3s infinite alternate ease-in-out; }
.card:hover, [class*="card"]:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); border-color: var(--color-accent); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background-color: var(--color-primary); color: white; border: 2px solid var(--color-accent); box-shadow: var(--shadow-sm); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { box-shadow: var(--shadow-lg); background-color: var(--color-accent); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-underline-offset: 3px; }
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 0 8px rgba(var(--rgb-accent), 0.4); }

/* ========== 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: horizontal */
/* 水平滚动 */
                .feature-list { display: flex; gap: var(--space-gap); overflow-x: auto; scroll-snap-type: x mandatory; }
                .feature-list > * { flex: 0 0 300px; scroll-snap-align: start; }

/* hero: minimal */
.hero { padding: 2rem 0; } .hero-content { max-width: 560px; }

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list { display: flex; overflow: hidden; } 
                .testimonial-list > * { flex: 0 0 100%; }

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }
.partner-grid > * { filter: grayscale(0.7); transition: var(--transition); }
.partner-grid > *:hover { filter: grayscale(0); filter: drop-shadow(0 0 12px rgba(var(--rgb-accent), 0.5)); }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }

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

/* cta: full-bg */
.cta-section { background: linear-gradient(160deg, #0f172a 0%, #1e293b 100%); color: #fff; padding: 4rem 2rem; box-shadow: inset 0 0 80px rgba(var(--rgb-accent), 0.15); }

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

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark)); box-shadow: inset 0 0 60px rgba(var(--rgb-accent), 0.2); color: white; }
.card { border-left: 3px solid var(--color-accent); }

/* 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; }
}