:root {
    --color-primary: #7a8f70;
    --color-primary-dark: #5e7456;
    --color-accent: #c47b5a;
    --color-surface: #faf8f3;
    --color-text: #2d2d2d;
    --rgb-primary: 122,143,112;
    --rgb-accent: 196,123,90;
    --radius-sm: 3px;
    --radius-md: 4px;
    --radius-lg: 6px;
    --radius-xl: 8px;
    --shadow-sm: 0 1px 0 rgba(45,45,45,.10);
    --shadow-md: 0 2px 8px rgba(20,20,20,.06), 0 1px 2px rgba(20,20,20,.04);
    --shadow-lg: 0 10px 24px rgba(20,20,20,.10), 0 3px 10px rgba(20,20,20,.06);
    --space-section: 2rem;
    --space-card: 0.875rem;
    --space-gap: 0.65rem;
    --transition: 220ms cubic-bezier(0.16, 1, 0.3, 1);
    --heading-weight: 600;
    --body-line-height: 1.75;
    --card-border: rgba(45,45,45,.10);
    --focus-outline: rgba(122,143,112,.65);
    --hero-grad-a: #faf8f3;
    --hero-grad-b: #87a878;
    --hero-grad-c: #c47b5a;
}

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:
        0 1px 0 rgba(45,45,45,.08),
        0 8px 18px rgba(45,45,45,.06),
        inset 0 1px 0 rgba(255,255,255,.55);
    padding: var(--space-card);
    transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition), background-color var(--transition);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: background-color var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); }
a:not([class]):focus-visible,
.btn:focus-visible,
button[class*="btn"]:focus-visible {
    outline: 2px solid var(--focus-outline);
    outline-offset: 2px;
    border-radius: var(--radius-md);
}

:root { caret-color: var(--color-accent); accent-color: var(--color-accent); }

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

/* news: featured-left */
/* 左大右小 (1大+2小) */
                .news-grid { display: grid; grid-template-columns: 2fr 1fr; grid-template-rows: auto auto; gap: var(--space-gap); }
                .news-grid > *:first-child { grid-row: span 2; }

/* features: centered */
/* 居中大卡片 */
                .feature-list { display: flex; flex-direction: column; align-items: center; gap: calc(var(--space-gap) * 2); max-width: 720px; margin: 0 auto; }

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

/* testimonials: stacked */
/* 垂直堆叠 */
                .testimonial-list { display: flex; flex-direction: column; gap: var(--space-gap); max-width: 720px; margin: 0 auto; }

/* 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: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; }

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover {
    transform: translateY(-2px);
    box-shadow:
        0 2px 0 rgba(45,45,45,.10),
        0 18px 40px rgba(45,45,45,.10),
        0 6px 16px rgba(45,45,45,.06),
        inset 0 1px 0 rgba(255,255,255,.60);
}
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(1200px 360px at 20% 10%, rgba(135,168,120,.35), rgba(135,168,120,0) 60%),
        radial-gradient(900px 300px at 80% 20%, rgba(196,123,90,.26), rgba(196,123,90,0) 55%),
        linear-gradient(135deg, var(--hero-grad-a), rgba(250,248,243,.55) 20%, rgba(255,255,255,.0) 55%),
        linear-gradient(135deg, rgba(135,168,120,.85), rgba(196,123,90,.75));
}
.card { border: 1px solid var(--card-border); }

@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; }
}