/* CSSVariantEngine v3.0 — guanyingdianjing.org.cn */
/* Palette: bold red-yellow | Radius: sharp zero-small | Shadow: hard offset solid */
/* Spacing: mixed tight-loose | Transition: snappy 0.15s */
/* Section layouts: {"news":"grid-3","features":"grid-2","hero":"centered","testimonials":"carousel","partners":"scroll","faq":"single-column","stats":"grid-3","cta":"card-style"} */

:root {
    --color-primary: #dc2626;
    --color-primary-dark: #7f1d1d;
    --color-accent: #facc15;
    --color-surface: #fffbeb;
    --color-text: #0f172a;
    --rgb-primary: 220, 38, 38;
    --rgb-accent: 250, 204, 21;
    --radius-sm: 0;
    --radius-md: 2px;
    --radius-lg: 3px;
    --radius-xl: 4px;
    --shadow-sm: 2px 2px 0 #0f172a;
    --shadow-md: 4px 4px 0 #0f172a;
    --shadow-lg: 6px 6px 0 #7f1d1d;
    --space-section: 2.1rem;
    --space-card: 1.1rem;
    --space-gap: 0.8rem;
    --transition: 0.15s ease-out;
    --heading-weight: 600;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: #fef2f2; }
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: 3px solid var(--color-primary); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); background-color: var(--color-surface); }
.btn, button[class*="btn"], a[class*="btn"] { border: 2px solid var(--color-text); border-radius: var(--radius-md); background-color: var(--color-accent); color: var(--color-text); transition: var(--transition); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration-thickness: 2px; }

/* ========== Section Layout Variants ========== */

/* news: grid-3 */
/* 三列等宽网格 */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
.news-grid .card { background-color: #fef9c3; border-color: #ca8a04; }

/* features: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }
.feature-list .card { background-color: #eff6ff; border-color: #2563eb; }

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

/* testimonials: carousel */
/* 单条轮播 */
.testimonial-list { display: flex; overflow: hidden; } 
.testimonial-list > * { flex: 0 0 100%; }
.testimonial-list .card { background-color: #faf5ff; border-color: #9333ea; }

/* partners: scroll */
/* 自动滚动 */
.partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 16s linear infinite; }
@keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
.partner-grid > * { border: 2px solid #16a34a; background-color: #f0fdf4; }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-list .card { background-color: #ecfccb; border-color: #65a30d; }

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }
.stats-grid .card { background-color: #fef3c7; border-color: #d97706; }

/* cta: card-style */
.cta-inner { background: linear-gradient(180deg, #facc15, #fef08a); border: 3px solid var(--color-text); border-radius: var(--radius-xl); padding: 3rem; text-align: center; box-shadow: var(--shadow-lg); }

/* 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: var(--color-primary-dark); background-color: var(--color-accent); padding: 2px 4px; }
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #dc2626, #7f1d1d, #b91c1c); border-bottom: 4px solid #0f172a; }
header, .header, .navbar { border-bottom: 3px solid var(--color-text); box-shadow: 3px 3px 0 var(--color-primary-dark); background-color: #fefce8; }

/* 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; }
}