:root {
    --color-primary: #e04a2e;
    --color-primary-dark: #b0361c;
    --color-accent: #0f9d9a;
    --color-surface: #f3f0ea;
    --color-text: #2b2119;
    --rgb-primary: 224,74,46;
    --rgb-accent: 15,157,154;
    --card-accent: 224,74,46;
    --radius-sm: 2px;
    --radius-md: 3px;
    --radius-lg: 5px;
    --radius-xl: 6px;
    --shadow-sm: 0 1px 2px rgba(45,35,25,.06), 0 0 0 1px rgba(45,35,25,.02);
    --shadow-md: 0 2px 4px rgba(45,35,25,.07), 0 1px 3px rgba(45,35,25,.04);
    --shadow-lg: 0 10px 20px rgba(45,35,25,.10), 0 2px 6px rgba(45,35,25,.06), 0 0 0 1px rgba(45,35,25,.03);
    --space-section: 4rem;
    --space-card: 1.6rem;
    --space-gap: 1.2rem;
    --transition: 0.2s cubic-bezier(0.2, 0.7, 0.3, 1);
    --heading-weight: 600;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { background-color: var(--color-surface); 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: #fffdf9; border-radius: var(--radius-lg); box-shadow: inset 0 3px 0 rgba(var(--card-accent), .9), 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: masonry-2 */
.news-grid { column-count: 2; column-gap: var(--space-gap); }
.news-grid .card { break-inside: avoid; margin-bottom: var(--space-gap); }

/* features: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }

/* hero: minimal */
.hero { padding: 1.6rem 0; }
.hero-content { max-width: 560px; }

/* testimonials: carousel */
.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: 1.6rem; }

/* faq: with-sidebar */
.faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 1.6rem; }

/* stats: big-number */
.stats-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 1.6rem; }
.stats-grid .stat-value { font-size: 3rem; }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 1.6rem; }

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-4px); box-shadow: inset 0 3px 0 rgba(var(--card-accent), .9), var(--shadow-lg); }
a:not([class]):hover { color: var(--color-accent); }
header, .header, .navbar { background: transparent; }

/* card mosaic accents */
.news-grid .card { background: #fdece7; --card-accent: 224,74,46; }
.feature-list .card { background: #e6f5f3; --card-accent: 15,157,154; }
.testimonial-list .card { background: #fdf2dd; --card-accent: 214,118,26; }
.partner-grid .card { background: #efeafb; --card-accent: 116,88,205; }
.faq-wrapper .card { background: #f7f1e8; --card-accent: 168,92,32; }
.stats-grid .card { background: #fce8d4; --card-accent: 224,130,29; }
.cta-inner .card { background: #e8eef6; --card-accent: 28,82,140; }

/* 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: 1.6rem; --space-card: 0.8rem; --space-gap: 0.6rem; }
    .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; }
}