:root {
    --color-primary: #886f4c;
    --color-primary-dark: #59452b;
    --color-accent: #9aaf8e;
    --color-surface: #fbf9f4;
    --color-text: #2a2a2a;
    --rgb-primary: 136,111,76;
    --rgb-accent: 154,175,142;
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 4px;
    --radius-xl: 6px;
    --shadow-sm: none;
    --shadow-md: none;
    --shadow-lg: none;
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --heading-weight: 600;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
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: none;
    background-color: var(--color-surface);
    padding: var(--space-card);
    transition: var(--transition);
    border: 2px solid var(--color-primary-dark);
}
.btn,
button[class*="btn"],
a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    background-color: var(--color-primary);
    border: 2px solid var(--color-primary-dark);
    color: var(--color-surface);
    box-shadow: none;
}
a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
}

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

/* news: featured-top */
/* 首篇横跨全宽 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-gap);
}
.news-grid > *:first-child {
    grid-column: span 3;
}

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

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

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

/* partners: grid-6 */
.partner-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-gap);
    align-items: center;
}

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

/* stats: grid-3 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 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 */
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: 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;
    }
}