:root {
    --color-primary: #2f4f3a;
    --color-primary-dark: #1f2320;
    --color-accent: #87a878;
    --color-surface: #faf8f3;
    --color-text: #2d2d2d;

    --rgb-primary: 47,79,58;
    --rgb-accent: 135,168,120;

    --radius-sm: 0px;
    --radius-md: 2px;
    --radius-lg: 4px;
    --radius-xl: 4px;

    --shadow-sm: 3px 3px 0px rgba(47,79,58,.22);
    --shadow-md: 4px 4px 0px rgba(47,79,58,.28);
    --shadow-lg: 5px 5px 0px rgba(47,79,58,.30);

    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;

    --transition: 0.15s cubic-bezier(.2,.9,.2,1);
    --heading-weight: 650;
    --body-line-height: 1.65;
}

/* 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); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] {
    border-radius: var(--radius-lg);
    box-shadow:
        var(--shadow-md),
        7px 7px 18px rgba(0,0,0,.10),
        inset 0 0 0 2px rgba(45,45,45,.08);
    padding: var(--space-card);
    transition: var(--transition);
    background: linear-gradient(180deg, rgba(250,248,243,.98), rgba(250,248,243,.92));
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    box-shadow:
        3px 3px 0px rgba(47,79,58,.25),
        0 10px 24px rgba(0,0,0,.08);
    outline-color: rgba(135,168,120,.55);
    outline-style: solid;
    outline-width: 2px;
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-shadow: none; }
a:not([class]):hover { color: rgba(47,79,58,.95); text-shadow: 0 1px 0 rgba(250,248,243,.55); }

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

/* news: grid-3 */
/* 三列等宽网格 */
                .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

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

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }

/* 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 520px at 10% 5%, rgba(135,168,120,.34), transparent 55%),
        radial-gradient(900px 520px at 85% 30%, rgba(196,123,90,.18), transparent 58%),
        linear-gradient(135deg, #faf8f3 0%, #e9efe6 30%, #1f2320 100%);
    color: rgba(250,248,243,.98);
    box-shadow:
        inset 0 0 0 3px rgba(250,248,243,.10),
        0 18px 48px rgba(0,0,0,.14);
}
.card { border-left: 3px solid var(--color-accent); }
header, .header, .navbar {
    box-shadow:
        4px 4px 0px rgba(47,79,58,.25),
        0 14px 32px rgba(0,0,0,.10),
        inset 0 0 0 2px rgba(45,45,45,.06);
    background: rgba(250,248,243,.88);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

/* 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; }
}