:root {
    --color-primary: #2b5b4a;
    --color-primary-dark: #21453a;
    --color-accent: #87a878;
    --color-surface: #faf8f3;
    --color-text: #2d2d2d;
    --rgb-primary: 43,91,74;
    --rgb-accent: 135,168,120;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;

    --shadow-sm:
        0 1px 0 rgba(45,45,45,.06),
        0 6px 16px rgba(43,91,74,.10);
    --shadow-md:
        0 2px 0 rgba(45,45,45,.04),
        0 14px 34px rgba(43,91,74,.12),
        0 0 0 1px rgba(43,91,74,.06);
    --shadow-lg:
        0 10px 30px rgba(43,91,74,.14),
        0 0 0 1px rgba(43,91,74,.08),
        0 0 26px rgba(var(--rgb-accent),.22);

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

    --transition: 520ms cubic-bezier(0.2, 0.85, 0.2, 1);
    --heading-weight: 600;
    --body-line-height: 1.75;
}

body { 
    color: var(--color-text); 
    line-height: var(--body-line-height);
    background: var(--color-surface);
    caret-color: var(--color-primary);
    accent-color: var(--color-accent);
}

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:
        0 1px 0 rgba(45,45,45,.05),
        0 10px 26px rgba(43,91,74,.10),
        0 0 0 1px rgba(var(--rgb-accent), .10),
        0 0 22px rgba(var(--rgb-accent), .18);
    padding: var(--space-card); 
    transition: 
        box-shadow 520ms cubic-bezier(0.2, 0.85, 0.2, 1),
        transform 520ms cubic-bezier(0.2, 0.85, 0.2, 1),
        border-color 520ms cubic-bezier(0.2, 0.85, 0.2, 1),
        background-color 520ms cubic-bezier(0.2, 0.85, 0.2, 1);
    background: linear-gradient(180deg, rgba(255,255,255,.78), rgba(250,248,243,.92));
}

.card:hover, [class*="card"]:hover { 
    box-shadow:
        0 2px 0 rgba(45,45,45,.05),
        0 14px 40px rgba(43,91,74,.16),
        0 0 0 1px rgba(var(--rgb-accent), .18),
        0 0 32px rgba(var(--rgb-accent), .42);
}

.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: 
        background-color 520ms cubic-bezier(0.2, 0.85, 0.2, 1),
        color 520ms cubic-bezier(0.2, 0.85, 0.2, 1),
        box-shadow 520ms cubic-bezier(0.2, 0.85, 0.2, 1),
        transform 520ms cubic-bezier(0.2, 0.85, 0.2, 1);
}

a:not([class]) { 
    color: var(--color-primary); 
    transition: color 520ms cubic-bezier(0.2, 0.85, 0.2, 1), filter 520ms cubic-bezier(0.2, 0.85, 0.2, 1);
}

.card { border: 1px solid rgba(var(--rgb-accent), .14); }

header, .header, .navbar { background: transparent; }

/* Subtle ambient pulse for glow-elements that reuse card styling */
@keyframes glowPulse {
    0% { filter: drop-shadow(0 0 0 rgba(var(--rgb-accent),0)); }
    45% { filter: drop-shadow(0 0 18px rgba(var(--rgb-accent),.28)); }
    100% { filter: drop-shadow(0 0 0 rgba(var(--rgb-accent),0)); }
}

.card {
    animation: glowPulse 6.5s ease-in-out infinite;
    will-change: filter;
}

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

/* news: featured-left */
/* 左大右小 (1大+2小) */
                .news-grid { display: grid; grid-template-columns: 2fr 1fr; grid-template-rows: auto auto; gap: var(--space-gap); }
                .news-grid > *:first-child { grid-row: span 2; }

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

/* 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-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }

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

/* 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; }
}