:root {
    --color-primary: #2d2d2d;
    --color-primary-dark: #1f1f1f;
    --color-accent: #87a878;
    --color-surface: #faf8f3;
    --color-text: #2d2d2d;
    --rgb-primary: 45,45,45;
    --rgb-accent: 135,168,120;
    --radius-sm: 3px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 16px;
    --shadow-sm: 0 8px 20px rgba(45,45,45,0.06);
    --shadow-md: 0 14px 30px rgba(45,45,45,0.10);
    --shadow-lg: 0 24px 55px rgba(45,45,45,0.14);
    --space-section: 3.75rem;
    --space-card: 1.1rem;
    --space-gap: 1.1rem;
    --transition: 240ms cubic-bezier(0.2, 0.8, 0.2, 1);
    --heading-weight: 800;
    --body-line-height: 1.75;
}

body { color: var(--color-text); line-height: var(--body-line-height); background: #faf8f3; }
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(45,45,45,0.06),
        0 10px 28px rgba(45,45,45,0.08),
        0 0 0 1px rgba(45,45,45,0.06);
    padding: var(--space-card);
    transition:
        transform var(--transition),
        box-shadow var(--transition),
        background-color var(--transition),
        border-color var(--transition),
        color var(--transition);
    background: rgba(250,248,243,0.88);
    border: 1px solid rgba(45,45,45,0.07);
}
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); border: 1px solid rgba(45,45,45,0.12); background: rgba(250,248,243,0.9); color: var(--color-text); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration-color: rgba(135,168,120,0.55); text-underline-offset: 3px; }

/* ========== 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: centered */
/* 居中大卡片 */
                .feature-list { display: flex; flex-direction: column; align-items: center; gap: calc(var(--space-gap) * 2); max-width: 720px; margin: 0 auto; }

/* 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: stacked */
/* 垂直堆叠 */
                .testimonial-list { display: flex; flex-direction: column; gap: var(--space-gap); max-width: 720px; margin: 0 auto; }

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }

/* 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; }

/* cta: card-style */
.cta-inner {
    background:
        radial-gradient(900px 260px at 50% -40%, rgba(135,168,120,0.35), rgba(135,168,120,0.00) 60%),
        linear-gradient(180deg, rgba(250,248,243,0.98), rgba(250,248,243,0.88));
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
    box-shadow:
        0 1px 0 rgba(45,45,45,0.06),
        0 18px 48px rgba(45,45,45,0.10),
        0 0 0 1px rgba(135,168,120,0.18);
    border: 1px solid rgba(135,168,120,0.16);
}

/* Page Layout: narrow-centered */
/* 窄版居中 */
            .page-main { max-width: 800px; margin: 0 auto; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover {
    transform: translateY(-4px);
    box-shadow:
        0 2px 0 rgba(45,45,45,0.07),
        0 18px 44px rgba(45,45,45,0.14),
        0 0 0 1px rgba(135,168,120,0.30),
        0 0 24px rgba(135,168,120,0.40);
}
a:not([class]):hover { color: var(--color-accent); }
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(1200px 500px at 20% 10%, rgba(135,168,120,0.20), rgba(135,168,120,0.00) 55%),
        radial-gradient(900px 360px at 85% 20%, rgba(135,168,120,0.16), rgba(135,168,120,0.00) 60%),
        linear-gradient(135deg, #faf8f3 0%, #f3efe6 38%, rgba(45,45,45,0.92) 100%);
}
header, .header, .navbar {
    box-shadow:
        0 1px 0 rgba(255,255,255,0.65) inset,
        0 10px 24px rgba(45,45,45,0.10),
        0 0 28px rgba(135,168,120,0.18);
    border-bottom: 1px solid rgba(45,45,45,0.08);
    background: rgba(250,248,243,0.86);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* Accessible glow pulse (subtle) */
@keyframes accentGlowPulse {
    0% { box-shadow: 0 0 0 rgba(135,168,120,0.00); }
    50% { box-shadow: 0 0 26px rgba(135,168,120,0.28); }
    100% { box-shadow: 0 0 0 rgba(135,168,120,0.00); }
}
.card:hover, [class*="card"]:hover {
    animation: accentGlowPulse 1.25s cubic-bezier(0.2, 0.8, 0.2, 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: 3.25rem; --space-card: 1.05rem; --space-gap: 1rem; }
    .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; }
}