:root {
    --color-primary: #2d2d2d;
    --color-primary-dark: #121212;
    --color-accent: #87a878;
    --color-surface: #faf8f3;
    --color-text: #2d2d2d;

    --rgb-primary: 45,45,45;
    --rgb-accent: 135,168,120;

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    --shadow-sm:
        0 1px 0 rgba(45,45,45,.08),
        0 6px 14px rgba(45,45,45,.08);
    --shadow-md:
        0 1px 0 rgba(45,45,45,.10),
        0 10px 26px rgba(45,45,45,.10),
        0 2px 10px rgba(135,168,120,.10);
    --shadow-lg:
        0 1px 0 rgba(45,45,45,.10),
        0 18px 44px rgba(45,45,45,.14),
        0 6px 18px rgba(135,168,120,.14);

    --space-section: 4.75rem;
    --space-card: 1.9rem;
    --space-gap: 1.65rem;

    --transition: 560ms cubic-bezier(0.16, 1, 0.3, 1);
    --heading-weight: 800;
    --body-line-height: 1.65;
}

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: calc(var(--radius-xl) - 2px);
    box-shadow:
        0 1px 0 rgba(45,45,45,.10),
        0 14px 34px rgba(45,45,45,.12),
        0 6px 18px rgba(135,168,120,.14);
    padding: var(--space-card);
    transition: box-shadow 560ms cubic-bezier(0.16, 1, 0.3, 1), transform 560ms cubic-bezier(0.16, 1, 0.3, 1), border-color 560ms cubic-bezier(0.16, 1, 0.3, 1);
}

.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: transform 560ms cubic-bezier(0.16, 1, 0.3, 1), background-color 560ms cubic-bezier(0.16, 1, 0.3, 1), color 560ms cubic-bezier(0.16, 1, 0.3, 1), box-shadow 560ms cubic-bezier(0.16, 1, 0.3, 1);
}

a:not([class]) {
    color: var(--color-text);
    transition: color 560ms cubic-bezier(0.16, 1, 0.3, 1), text-shadow 560ms cubic-bezier(0.16, 1, 0.3, 1);
}

a:not([class]):focus, a:not([class])[href]:focus { outline-color: rgba(135,168,120,.55); }
a:not([class])::selection, body::selection { background: rgba(135,168,120,.35); color: #1d1d1d; }

section, .section, .card { background-clip: padding-box; }
* { caret-color: var(--color-accent); accent-color: var(--color-accent); }

/* ========== 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: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }

/* hero: overlay */
/* 全屏背景+文字覆盖 */
                .hero { position: relative; min-height: 70vh; display: flex; align-items: center; }
                .hero-content { position: relative; z-index: 1; }

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list { display: flex; overflow: hidden; } 
                .testimonial-list > * { flex: 0 0 100%; }

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

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }

/* stats: big-number */
/* 大数字居中 */
                .stats-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }
                .stats-grid .stat-value { font-size: 3rem; text-shadow: 0 1px 0 rgba(45,45,45,.10), 0 10px 30px rgba(45,45,45,.10); }

/* cta: card-style */
.cta-inner {
    background:
        radial-gradient(1200px 480px at 50% -10%, rgba(135,168,120,.28), rgba(135,168,120,0) 55%),
        linear-gradient(180deg, #ffffff 0%, var(--color-surface) 65%, #f6f3ea 100%);
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
    box-shadow:
        0 1px 0 rgba(45,45,45,.08),
        0 20px 60px rgba(45,45,45,.12),
        0 10px 26px rgba(135,168,120,.16);
    border: 1px solid rgba(45,45,45,.08);
}

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

/* 条件性装饰 */
a:not([class]):hover {
    color: var(--color-accent);
    text-shadow: 0 10px 26px rgba(135,168,120,.35), 0 1px 0 rgba(45,45,45,.10);
}

.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(900px 520px at 12% 8%, rgba(135,168,120,.35), rgba(135,168,120,0) 55%),
        radial-gradient(700px 420px at 88% 18%, rgba(196,123,90,.16), rgba(196,123,90,0) 55%),
        linear-gradient(135deg, #faf8f3 0%, #efeade 35%, #e7efe7 70%, #f6f3ea 100%);
    filter: saturate(1.02);
}

header, .header, .navbar {
    background: transparent;
    backdrop-filter: blur(10px) saturate(1.1);
    -webkit-backdrop-filter: blur(10px) saturate(1.1);
}

/* 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: 1.15rem; --space-gap: 1.05rem; --radius-sm: 8px; --radius-md: 12px; --radius-lg: 18px; --radius-xl: 24px; }
    .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; box-shadow: 0 1px 0 rgba(45,45,45,.08), 0 16px 44px rgba(45,45,45,.12), 0 8px 22px rgba(135,168,120,.16); }
}