:root {
    --color-primary: #c44536;
    --color-primary-dark: #8c2f23;
    --color-accent: #6b705c;
    --color-surface: #f5f1e8;
    --color-text: #1a1a1a;
    --rgb-primary: 196, 69, 54;
    --rgb-accent: 107, 112, 92;
    --radius-sm: 2px;
    --radius-md: 5px;
    --radius-lg: 9px;
    --radius-xl: 14px;
    --shadow-sm: 0 1px 2px rgba(26, 26, 26, .06), 0 1px 3px rgba(196, 69, 54, .04);
    --shadow-md: 0 6px 14px rgba(26, 26, 26, .08), 0 2px 6px rgba(196, 69, 54, .05);
    --shadow-lg: 0 16px 32px rgba(26, 26, 26, .12), 0 6px 16px rgba(196, 69, 54, .08), 0 2px 6px rgba(107, 112, 92, .06);
    --space-section: 4.5rem;
    --space-card: 1.75rem;
    --space-gap: 1.5rem;
    --transition: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 600;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body {
    background:
        radial-gradient(circle at 10% 0%, rgba(196, 69, 54, .05) 0%, transparent 40%),
        radial-gradient(circle at 90% 100%, rgba(107, 112, 92, .06) 0%, transparent 40%),
        linear-gradient(180deg, #f5f1e8 0%, #ece3d2 100%);
    color: var(--color-text);
    line-height: var(--body-line-height);
}
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] {
    background: linear-gradient(135deg, #fdfaf2 0%, #f2eadb 100%);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--space-card);
    transition: var(--transition);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

/* ========== 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); }

/* features: centered */
/* 居中大卡片 */
.feature-list { display: flex; flex-direction: column; align-items: center; gap: calc(var(--space-gap) * 2); max-width: 720px; margin: 0 auto; }

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }

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

/* partners: scroll */
/* 自动滚动 */
.partner-grid { display: flex; gap: 2.25rem; overflow: hidden; animation: partnerScroll 28s cubic-bezier(0.22, 1, 0.36, 1) infinite; }
@keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

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

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: card-style */
.cta-inner {
    background: linear-gradient(135deg, #fdfaf2 0%, #ece3d2 50%, #e3d7bf 100%);
    border-radius: var(--radius-xl);
    padding: 3.5rem;
    text-align: center;
}

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(circle at 20% 20%, rgba(250, 246, 238, .08) 0%, transparent 35%),
        radial-gradient(circle at 80% 90%, rgba(107, 112, 92, .28) 0%, transparent 42%),
        linear-gradient(135deg, #c44536 0%, #8c2f23 45%, #6b705c 100%);
}
header, .header, .navbar { background: transparent; }

/* 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: 2.25rem; --space-card: 1.125rem; --space-gap: 0.875rem; }
    .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; }
}