:root {
    --color-primary: #2d6a4f;
    --color-primary-dark: #24453a;
    --color-accent: #87a878;
    --color-surface: #faf8f3;
    --color-text: #2d2d2d;
    --rgb-primary: 45,106,79;
    --rgb-accent: 135,168,120;
    --radius-sm: 3px;
    --radius-md: 5px;
    --radius-lg: 6px;
    --radius-xl: 8px;
    --shadow-sm: 0 1px 0 rgba(45,45,45,.10);
    --shadow-md: 0 1px 2px rgba(45,45,45,.12), 0 0 0 1px rgba(45,45,45,.06);
    --shadow-lg: 0 2px 6px rgba(45,45,45,.10), 0 0 0 1px rgba(45,45,45,.07);
    --space-section: 5rem;
    --space-card: 1rem;
    --space-gap: 0.95rem;
    --transition: 160ms cubic-bezier(.2,.9,.2,1);
    --heading-weight: 650;
    --body-line-height: 1.6;

    --color-link: #c47b5a;
    --color-border: rgba(45,45,45,.12);
    --color-muted: rgba(45,45,45,.72);
    --color-soft: rgba(250,248,243,.82);
    --ring: rgba(135,168,120,.55);
    --shadow-card: 0 1px 0 rgba(45,45,45,.10), 0 6px 18px rgba(45,45,45,.06);
    --shadow-card-hover: 0 2px 0 rgba(45,45,45,.14), 0 10px 26px rgba(45,45,45,.09);
}

body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background: radial-gradient(1200px 600px at 20% -10%, rgba(135,168,120,.16), transparent 55%),
                radial-gradient(900px 500px at 90% 0%, rgba(196,123,90,.11), transparent 52%),
                var(--color-surface);
}

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: var(--shadow-card);
    padding: var(--space-card);
    transition: box-shadow 220ms cubic-bezier(.2,.9,.2,1), transform 220ms cubic-bezier(.2,.9,.2,1), border-color 220ms cubic-bezier(.2,.9,.2,1), background-color 220ms cubic-bezier(.2,.9,.2,1);
    border: 1px solid rgba(45,45,45,.08);
    background: linear-gradient(180deg, rgba(250,248,243,.95), rgba(250,248,243,.82));
}

.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: background-color 160ms cubic-bezier(.2,.9,.2,1), color 160ms cubic-bezier(.2,.9,.2,1), border-color 160ms cubic-bezier(.2,.9,.2,1), box-shadow 160ms cubic-bezier(.2,.9,.2,1), transform 160ms cubic-bezier(.2,.9,.2,1);
    box-shadow: 0 1px 0 rgba(45,45,45,.10);
    border: 1px solid rgba(45,45,45,.12);
}

a:not([class]) {
    color: var(--color-link);
    transition: color 160ms cubic-bezier(.2,.9,.2,1), text-shadow 160ms cubic-bezier(.2,.9,.2,1), border-color 160ms cubic-bezier(.2,.9,.2,1);
    text-shadow: 0 1px 0 rgba(255,255,255,.45);
}

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

/* news: grid-4 */
/* 四列紧凑网格 */
                .news-grid {
                    display: grid;
                    grid-template-columns: repeat(4, 1fr);
                    gap: calc(var(--space-gap) * 0.8);
                }

/* 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;
                }

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

/* testimonials: grid-3 */
.testimonial-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-gap);
}

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

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }

/* 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: linear-gradient(135deg, #c47b5a 0%, #2d6a4f 55%, #24453a 100%);
    color: #fff;
    padding: 4rem 2rem;
    box-shadow: 0 10px 40px rgba(45,45,45,.16);
    border-top: 1px solid rgba(255,255,255,.18);
    border-bottom: 1px solid rgba(0,0,0,.10);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: "";
    position: absolute;
    inset: -2px;
    background: radial-gradient(600px 260px at 20% 15%, rgba(250,248,243,.22), transparent 60%),
                radial-gradient(540px 300px at 90% 35%, rgba(135,168,120,.28), transparent 58%);
    opacity: .9;
    pointer-events: none;
}

.cta-section > * {
    position: relative;
    text-shadow: 0 1px 0 rgba(0,0,0,.18);
}

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
            .page-main { max-width: 1200px; margin: 0 auto; }

/* 条件性装饰 */
.hero,
[class*="hero"],
section:first-of-type {
    background: linear-gradient(180deg, rgba(250,248,243,.0), rgba(250,248,243,.0)),
                radial-gradient(1200px 520px at 15% 0%, rgba(135,168,120,.26), transparent 55%),
                radial-gradient(900px 480px at 85% 10%, rgba(196,123,90,.18), transparent 52%),
                linear-gradient(135deg, #faf8f3 0%, rgba(250,248,243,.88) 35%, rgba(45,106,79,.16) 100%);
    border-top: 1px solid rgba(45,45,45,.08);
    border-bottom: 1px solid rgba(45,45,45,.08);
}

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: 0.85rem;
        --space-gap: 0.7rem;

        --radius-sm: 3px;
        --radius-md: 5px;
        --radius-lg: 6px;
        --radius-xl: 8px;

        --shadow-card: 0 1px 0 rgba(45,45,45,.10), 0 4px 14px rgba(45,45,45,.06);
    }
    .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; }
}