:root {
    --color-primary: #b85c38;
    --color-primary-dark: #7a3822;
    --color-accent: #d99f6e;
    --color-surface: #f6f4ee;
    --color-text: #2d3038;
    --color-sidebar: #252e3a;
    --rgb-primary: 184,92,56;
    --rgb-accent: 217,159,110;
    --radius-sm: 4px;
    --radius-md: 10px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    --shadow-sm: 0 1px 2px rgba(23,25,35,0.06), 0 2px 8px rgba(23,25,35,0.04);
    --shadow-md: 0 2px 4px rgba(23,25,35,0.08), 0 12px 24px rgba(23,25,35,0.12), 0 4px 16px rgba(217,159,110,0.08);
    --shadow-lg: 0 8px 16px rgba(23,25,35,0.08), 0 24px 48px rgba(23,25,35,0.16), 0 6px 20px rgba(184,92,56,0.12);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.6s cubic-bezier(0.25, 1, 0.5, 1);
    --heading-weight: 800;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    background: linear-gradient(180deg, #f7f4ee 0%, #efe9e0 45%, #e3dbd0 100%);
    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"] {
    border-radius: var(--radius-lg);
    background:
        radial-gradient(circle at 0% 0%, rgba(255,255,255,0.65), rgba(255,255,255,0) 55%),
        linear-gradient(145deg, #fbf9f5, #efe8df);
    box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255,255,255,0.65);
    padding: var(--space-card);
    transition: var(--transition);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    color: #fff;
    text-shadow: 0 1px 0 rgba(37,46,58,0.15);
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 100%);
    box-shadow: 0 2px 4px rgba(37,46,58,0.15), 0 6px 16px rgba(184,92,56,0.25);
    transition: var(--transition);
}
a:not([class]) {
    color: var(--color-accent);
    text-shadow: 0 1px 2px rgba(37,46,58,0.15);
    transition: var(--transition);
}

/* ========== 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: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }

/* 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: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
                .testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper {
                    display: grid;
                    grid-template-columns: 2fr 1fr;
                    gap: 2rem;
                    background: linear-gradient(135deg, rgba(255,255,255,0.45), rgba(255,255,255,0));
                    border-radius: var(--radius-xl);
                }

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

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
            .page-main { max-width: 1200px; margin: 0 auto; }

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(120% 90% at 15% 0%, rgba(255,255,255,0.12) 0%, rgba(255,255,255,0) 50%),
        linear-gradient(135deg, #252e3a 0%, #2a3644 48%, #3c4c63 72%, var(--color-primary) 115%);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.08), inset 0 -1px 0 rgba(0,0,0,0.12);
}
.card {
    border-left: 3px solid transparent;
    border-image: linear-gradient(180deg, var(--color-accent) 0%, var(--color-primary) 55%, var(--color-primary-dark) 100%) 1;
    border-image-width: 0 0 0 3px;
}
header, .header, .navbar {
    background: rgba(37,46,58,0.78);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    color: #f6f4ee;
    box-shadow: 0 1px 0 rgba(255,255,255,0.06), 0 6px 24px rgba(37,46,58,0.18);
}

/* 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; }
}