:root {
    --color-primary: #e85d3d;
    --color-primary-dark: #9a2b1c;
    --color-accent: #eab308;
    --color-surface: #fff4e6;
    --color-text: #2a2622;
    --rgb-primary: 232,93,61;
    --rgb-accent: 234,179,8;
    --radius-sm: 0;
    --radius-md: 2px;
    --radius-lg: 4px;
    --radius-xl: 4px;
    --shadow-sm: 2px 2px 0 0 var(--color-text);
    --shadow-md: 4px 4px 0 0 var(--color-text);
    --shadow-lg: 6px 6px 0 0 var(--color-text);
    --card-accent: #e85d3d;
    --card-surface: #fff4e6;
    --card-shadow: 4px 4px 0 0 #2a2622;
    --card-shadow-hover: 7px 7px 0 0 #2a2622;
    --space-section: 3rem;
    --space-card: 1.375rem;
    --space-gap: 1.125rem;
    --transition: 0.15s cubic-bezier(.2,.8,.2,1);
    --heading-weight: 700;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: #f4efe6; }
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-md);
    background-color: var(--card-surface, var(--color-surface));
    color: var(--color-text);
    box-shadow: inset 0 0 0 3px var(--card-accent, var(--color-primary)), var(--card-shadow, var(--shadow-md));
    padding: var(--space-card);
    transition: var(--transition);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    background-color: var(--color-accent);
    color: var(--color-text);
    outline: 2px solid var(--color-text);
    outline-offset: -2px;
    box-shadow: 4px 4px 0 0 var(--color-text);
    transition: var(--transition);
}
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);
                    --card-accent: #f59e0b;
                    --card-surface: #fde68a;
                    --card-shadow: 4px 4px 0 0 #b45309;
                    --card-shadow-hover: 7px 7px 0 0 #b45309;
                }
                .news-grid .card { break-inside: avoid; margin-bottom: var(--space-gap); }

/* features: grid-2 */
.feature-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: calc(var(--space-gap) * 1.5);
    --card-accent: #ef4444;
    --card-surface: #fecaca;
    --card-shadow: 5px 5px 0 0 #b91c1c;
    --card-shadow-hover: 8px 8px 0 0 #b91c1c;
}

/* hero: overlay */
/* 全屏背景+文字覆盖 */
                .hero { position: relative; min-height: 70vh; display: flex; align-items: center; }
                .hero-content { position: relative; z-index: 1; }

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list {
                    display: flex;
                    overflow: hidden;
                    --card-accent: #8b5cf6;
                    --card-surface: #ddd6fe;
                    --card-shadow: 6px 6px 0 0 #6d28d9;
                    --card-shadow-hover: 9px 9px 0 0 #6d28d9;
                }
                .testimonial-list > * { flex: 0 0 100%; }

/* partners: grid-4 */
.partner-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: calc(var(--space-gap) * 1.5);
    align-items: center;
    --card-accent: #14b8a6;
    --card-surface: #99f6e4;
    --card-shadow: 3px 3px 0 0 #0f766e;
    --card-shadow-hover: 6px 6px 0 0 #0f766e;
}

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper {
                    display: grid;
                    grid-template-columns: 2fr 1fr;
                    gap: 2rem;
                    --card-accent: #f97316;
                    --card-surface: #fed7aa;
                    --card-shadow: 5px 5px 0 0 #c2410c;
                    --card-shadow-hover: 8px 8px 0 0 #c2410c;
                }

/* stats: big-number */
/* 大数字居中 */
                .stats-grid {
                    display: flex;
                    flex-wrap: wrap;
                    justify-content: center;
                    gap: 2rem;
                    --card-accent: #3b82f6;
                    --card-surface: #bfdbfe;
                    --card-shadow: 4px 4px 0 0 #2563eb;
                    --card-shadow-hover: 7px 7px 0 0 #2563eb;
                }
                .stats-grid .stat-value { font-size: 3rem; }

/* cta: split */
.cta-inner {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 2rem;
    --card-accent: #ec4899;
    --card-surface: #fbcfe8;
    --card-shadow: 6px 6px 0 0 #be185d;
    --card-shadow-hover: 9px 9px 0 0 #be185d;
}

/* 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: inset 0 0 0 3px var(--card-accent), var(--card-shadow-hover, var(--shadow-lg)); }
a:not([class]):hover { color: var(--color-accent); }
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #9a2b1c 0%, #e85d3d 55%, #eab308 100%); }
header, .header, .navbar { box-shadow: 0 3px 0 0 #2a2622, 0 4px 14px rgba(42,38,34,.08); }

/* 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; }
}