/* CSSVariantEngine v3.0 — vertical-flow + gradient-rich */
/* Palette: warm-minimal | Radius: soft | Shadow: layered */
/* Spacing: balanced | Transition: smooth */
/* Section layouts: {"news":"masonry-2","features":"grid-4","hero":"centered","testimonials":"stacked","partners":"grid-4","faq":"two-column","stats":"big-number","cta":"centered"} */

:root {
    --color-primary: #6b835f;
    --color-primary-dark: #4a6142;
    --color-accent: #c47b5a;
    --color-surface: #faf8f3;
    --color-text: #2d2d2d;
    --rgb-primary: 107,131,95;
    --rgb-accent: 196,123,90;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 2px 8px rgba(45,45,45,.06), 0 1px 3px rgba(45,45,45,.04);
    --shadow-md: 0 10px 28px rgba(45,45,45,.08), 0 4px 10px rgba(196,123,90,.06);
    --shadow-lg: 0 28px 56px rgba(45,45,45,.10), 0 10px 20px rgba(196,123,90,.08);
    --space-section: 3.5rem;
    --space-card: 1.4rem;
    --space-gap: 1.1rem;
    --transition: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --heading-weight: 600;
    --body-line-height: 1.6;
    accent-color: var(--color-primary);
    caret-color: var(--color-accent);
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background:
        radial-gradient(ellipse at 20% 0%, rgba(196,123,90,.06), transparent 50%),
        radial-gradient(ellipse at 80% 100%, rgba(135,168,120,.08), transparent 50%),
        linear-gradient(180deg, #faf8f3 0%, #f3eee4 100%);
}
h1, h2, h3, h4 {
    font-weight: var(--heading-weight);
    color: var(--color-text);
    text-shadow: 0 1px 0 rgba(255,255,255,.6);
}
section, .section {
    padding-top: var(--space-section);
    padding-bottom: var(--space-section);
    background: linear-gradient(180deg, transparent, rgba(255,255,255,.35), transparent);
}
.card, [class*="card"] {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md), inset 0 0 0 1px rgba(107,131,95,.12);
    padding: var(--space-card);
    transition: var(--transition);
    background:
        linear-gradient(145deg, rgba(255,255,255,.95), rgba(250,248,243,.85)),
        radial-gradient(circle at 15% 15%, rgba(135,168,120,.12), transparent 55%);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    background: linear-gradient(135deg, #a7c69a 0%, #87a878 70%, #6b835f 100%);
    color: #2d2d2d;
    box-shadow: var(--shadow-sm), inset 0 1px 0 rgba(255,255,255,.5);
}
a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
    text-decoration-color: var(--color-accent);
    text-shadow: 0 1px 0 rgba(255,255,255,.4);
}

/* ========== 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-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; background: radial-gradient(circle, rgba(135,168,120,.10), transparent 70%); }

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

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }

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

/* stats: big-number */
/* 大数字居中 */
.stats-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2.2rem; }
.stats-grid .stat-value { font-size: 3rem; background: linear-gradient(135deg, var(--color-primary), var(--color-accent)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: var(--color-primary); }

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; background: radial-gradient(circle, rgba(196,123,90,.10), transparent 70%); }

/* 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: linear-gradient(180deg, rgba(250,248,243,.92), rgba(250,248,243,.75)); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }

/* 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: 2.25rem; --space-card: 1.1rem; --space-gap: 0.85rem; }
    .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; }
}