:root {
    --color-primary: #2b3a2f;
    --color-primary-dark: #141914;
    --color-accent: #87a878;
    --color-surface: #faf8f3;
    --color-text: #2d2d2d;
    --rgb-primary: 43,58,47;
    --rgb-accent: 135,168,120;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 22px;
    --shadow-sm: 0 1px 0 rgba(20,25,20,.06), 0 6px 18px rgba(20,25,20,.06);
    --shadow-md: 0 1px 0 rgba(20,25,20,.05), 0 10px 26px rgba(20,25,20,.10), 0 0 0 1px rgba(135,168,120,.10);
    --shadow-lg: 0 1px 0 rgba(20,25,20,.05), 0 18px 44px rgba(20,25,20,.14), 0 0 0 1px rgba(135,168,120,.14);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.52s cubic-bezier(.2,.9,.2,1);
    --heading-weight: 650;
    --body-line-height: 1.6;
}

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);
    padding: var(--space-card);
    transition: var(--transition);
    box-shadow:
        0 1px 0 rgba(20,25,20,.05),
        0 10px 28px rgba(20,25,20,.10),
        0 0 0 1px rgba(135,168,120,.14),
        0 22px 60px rgba(135,168,120,.10);
    background:
        radial-gradient(1200px 220px at 20% 0%, rgba(135,168,120,.18) 0%, rgba(135,168,120,0) 60%),
        radial-gradient(900px 240px at 90% 10%, rgba(196,123,90,.12) 0%, rgba(196,123,90,0) 55%),
        linear-gradient(180deg, rgba(250,248,243,1) 0%, rgba(250,248,243,.96) 100%);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    color: var(--color-primary);
    background:
        linear-gradient(180deg, rgba(255,255,255,.92) 0%, rgba(250,248,243,.96) 100%);
    box-shadow:
        0 1px 0 rgba(20,25,20,.06),
        0 10px 22px rgba(20,25,20,.08),
        0 0 0 1px rgba(135,168,120,.18);
}
a:not([class]) { color: var(--color-accent); transition: var(--transition); text-shadow: 0 1px 0 rgba(250,248,243,.8); }

/* ========== 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: calc(var(--radius-lg) - 2px);
                    box-shadow:
                        0 1px 0 rgba(20,25,20,.05),
                        0 12px 30px rgba(20,25,20,.10),
                        0 0 0 1px rgba(135,168,120,.12),
                        0 30px 72px rgba(135,168,120,.08);
                }

/* features: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }
.feature-list > * {
    border-radius: calc(var(--radius-lg) - 2px);
    transition: var(--transition);
}

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
                .testimonial-list > * {
                    break-inside: avoid;
                    margin-bottom: var(--space-gap);
                    box-shadow:
                        0 1px 0 rgba(20,25,20,.05),
                        0 12px 30px rgba(20,25,20,.10),
                        0 0 0 1px rgba(135,168,120,.14);
                    border-radius: calc(var(--radius-lg) - 4px);
                    background:
                        radial-gradient(900px 220px at 0% 0%, rgba(135,168,120,.16) 0%, rgba(135,168,120,0) 60%),
                        linear-gradient(180deg, rgba(250,248,243,1) 0%, rgba(250,248,243,.94) 100%);
                }

/* partners: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center; }
.partner-grid > * {
    filter: saturate(1.02) contrast(1.02);
    opacity: .95;
    transition: var(--transition);
}

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }
.faq-wrapper .card, .faq-wrapper [class*="card"]{
    border-radius: var(--radius-lg);
}

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }
.stats-grid .card, .stats-grid [class*="card"]{
    background:
        radial-gradient(700px 200px at 50% -10%, rgba(135,168,120,.22) 0%, rgba(135,168,120,0) 60%),
        linear-gradient(180deg, rgba(250,248,243,1) 0%, rgba(250,248,243,.94) 100%);
    box-shadow:
        0 1px 0 rgba(20,25,20,.05),
        0 14px 36px rgba(20,25,20,.10),
        0 0 0 1px rgba(135,168,120,.14);
}

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }
.cta-inner .card, .cta-inner [class*="card"]{
    border-radius: var(--radius-lg);
}

/* Page Layout: narrow-centered */
/* 窄版居中 */
            .page-main { max-width: 860px; margin: 0 auto; }

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(1100px 420px at 20% 10%, rgba(135,168,120,.38) 0%, rgba(135,168,120,0) 58%),
        radial-gradient(900px 360px at 85% 30%, rgba(196,123,90,.22) 0%, rgba(196,123,90,0) 55%),
        linear-gradient(135deg, rgba(250,248,243,1) 0%, rgba(250,248,243,.92) 28%, rgba(20,25,20,.08) 100%);
}
header, .header, .navbar {
    box-shadow:
        0 1px 0 rgba(20,25,20,.06),
        0 16px 46px rgba(20,25,20,.10);
    background:
        linear-gradient(180deg, rgba(250,248,243,.92) 0%, rgba(250,248,243,.80) 100%);
    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: 2rem; --space-card: 1rem; --space-gap: 0.75rem; --transition: 0.48s cubic-bezier(.2,.85,.2,1); }
    .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; }
}