:root {
    --color-primary: #87a878;
    --color-primary-dark: #6a7a5f;
    --color-accent: #c47b5a;
    --color-surface: #faf8f3;
    --color-text: #2d2d2d;
    --rgb-primary: 135,168,120;
    --rgb-accent: 196,123,90;
    --radius-sm: 3px;
    --radius-md: 5px;
    --radius-lg: 6px;
    --radius-xl: 10px;
    --shadow-sm: 0 1px 2px rgba(45,45,45,0.07), 0 1px 1px rgba(133,148,124,0.1);
    --shadow-md: 0 3px 5px rgba(45,45,45,0.1), 0 2px 3px rgba(133,148,124,0.12);
    --shadow-lg: 0 6px 10px rgba(45,45,45,0.12), 0 3px 6px rgba(133,148,124,0.15);
    --space-section: 3rem;
    --space-card: 1.2rem;
    --space-gap: 1rem;
    --transition: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --heading-weight: 600;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background: var(--color-surface);
}

h1, h2, h3, h4 {
    font-weight: var(--heading-weight);
    text-shadow: 0 1px 1px rgba(45, 45, 45, 0.05);
}

section, .section {
    padding-top: var(--space-section);
    padding-bottom: var(--space-section);
}

.card, [class*="card"] {
    border-radius: var(--radius-md);
    box-shadow:
        0 0 3px rgba(133,148,124,0.15),
        0 2px 4px rgba(45,45,45,0.10);
    padding: var(--space-card);
    transition: var(--transition);
    border-style: solid;
    border-color: var(--color-primary);
    border-width: 3px 0 3px 3px;
    background: #fff;
    filter: drop-shadow(0 1px 1px rgba(196,123,90,0.06));
}

.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-sm);
    transition: var(--transition);
    border-style: solid;
    border-color: transparent;
    background: linear-gradient(90deg, #87a878 0%, #6a7a5f 100%);
    color: var(--color-surface);
    box-shadow: 0 1px 1px rgba(45,45,45,0.1);
}

a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
    text-decoration: none;
    outline-offset: 2px;
    outline-color: transparent;
    outline-style: solid;
    outline-width: 2px;
}
a:not([class]):hover {
    color: var(--color-accent);
    outline-color: var(--color-accent);
    text-decoration: underline;
}

/* ========== 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);
    border-radius: var(--radius-sm);
    box-shadow:
        0 0 2px rgba(133,148,124,0.1),
        0 1px 2px rgba(45,45,45,0.08);
}

/* features: horizontal */
/* 水平滚动 */
.feature-list {
    display: flex;
    gap: var(--space-gap);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
}
.feature-list > * {
    flex: 0 0 300px;
    scroll-snap-align: start;
    border-radius: var(--radius-sm);
    box-shadow:
        0 0 2px rgba(45,45,45,0.08),
        0 1px 1px rgba(133,148,124,0.12);
}

/* hero: split */
/* 左文右图 */
.hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}

/* testimonials: masonry */
.testimonial-list {
    column-count: 2;
    column-gap: var(--space-gap);
}
.testimonial-list > * {
    break-inside: avoid;
    margin-bottom: var(--space-gap);
    border-radius: var(--radius-sm);
    box-shadow:
        0 0 2px rgba(133,148,124,0.1),
        0 1px 2px rgba(45,45,45,0.07);
}

/* partners: scroll */
/* 自动滚动 */
.partner-grid {
    display: flex;
    gap: 2rem;
    overflow: hidden;
    animation: partnerScroll 20s cubic-bezier(0.4,0,0.2,1) infinite;
}
@keyframes partnerScroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
.faq-wrapper {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

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

/* cta: full-bg */
.cta-section {
    background: linear-gradient(135deg, #87a878 0%, #6a7a5f 100%);
    color: #faf8f3;
    padding: 4rem 2rem;
    border-radius: var(--radius-md);
    box-shadow:
        0 4px 8px rgba(45,45,45,0.15),
        inset 0 0 10px rgba(135,168,120,0.3);
}

/* Page Layout: wide */
/* 超宽 */
.page-main {
    max-width: 780px;
    margin: 0 auto;
}

/* 条件性装饰 */
.card:hover, [class*="card"]:hover {
    transform: translateY(-2px);
    box-shadow:
        0 6px 8px rgba(45,45,45,0.15),
        0 2px 6px rgba(196,123,90,0.12);
    border-color: var(--color-accent);
}
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;
    }
}