:root {
    --color-primary: #9a3412;
    --color-primary-dark: #7c2d12;
    --color-accent: #22c55e;
    --color-surface: #f7fee7;
    --color-text: #1f2937;
    --rgb-primary: 154,52,18;
    --rgb-accent: 34,197,94;
    --radius-sm: 2px;
    --radius-md: 3px;
    --radius-lg: 4px;
    --radius-xl: 0px;
    --shadow-sm: 2px 2px 0px rgba(0,0,0,.22);
    --shadow-md: 4px 4px 0px rgba(0,0,0,.22), 0px 0px 0px rgba(0,0,0,0);
    --shadow-lg: 6px 6px 0px rgba(0,0,0,.26), 0px 2px 0px rgba(0,0,0,.12);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.15s cubic-bezier(.2,.9,.2,1);
    --heading-weight: 700;
    --body-line-height: 1.65;
}

body { 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"] {
    border-radius: var(--radius-lg);
    box-shadow:
        4px 4px 0px rgba(0,0,0,.22),
        -1px -1px 0px rgba(255,255,255,.10),
        inset 0 0 0px rgba(0,0,0,0);
    padding: var(--space-card);
    transition: var(--transition);
    border: 2px solid rgba(var(--rgb-primary), .25);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    border: 2px solid rgba(var(--rgb-primary), .35);
    box-shadow: 3px 3px 0px rgba(0,0,0,.18);
}
a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
    text-shadow: 0px 1px 0px rgba(255,255,255,.10);
}

.card:hover, [class*="card"]:hover {
    transform: translateY(-3px);
    box-shadow:
        6px 6px 0px rgba(0,0,0,.26),
        -1px -1px 0px rgba(255,255,255,.10),
        inset 0 0 0px rgba(0,0,0,0);
    border-color: rgba(var(--rgb-primary), .48);
}
a:not([class]):hover { color: var(--color-accent); }

.hero, [class*="hero"], section:first-of-type {
    background:
        linear-gradient(135deg, #9a3412 0%, #7c2d12 45%, #2b6cb0 100%);
    color: rgba(255,255,255,.96);
}
.card { border: 2px solid rgba(var(--rgb-primary), .22); }
header, .header, .navbar { background: transparent; }

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

/* news: list-view */
/* 列表模式 (图左文右) */
                .news-grid { display: flex; flex-direction: column; gap: var(--space-gap); }
                .news-grid .card { display: grid; grid-template-columns: 280px 1fr; }

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

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

/* 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; }

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: full-bg */
.cta-section {
    background:
        radial-gradient(1200px 420px at 20% 0%, rgba(34,197,94,.45) 0%, rgba(34,197,94,0) 55%),
        linear-gradient(135deg, #9a3412 0%, #7c2d12 55%, #0f766e 100%);
    color: rgba(255,255,255,.98);
    padding: 4rem 2rem;
    border-top: 3px solid rgba(255,255,255,.14);
    border-bottom: 3px solid rgba(0,0,0,.22);
}

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

.card, .btn, button[class*="btn"], a[class*="btn"] { caret-color: var(--color-accent); }

/* 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; }
}