: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: 8px;
    --radius-md: 14px;
    --radius-lg: 18px;
    --radius-xl: 26px;
    --shadow-sm: 0 3px 8px rgba(45,45,45,0.10), 0 1px 0 rgba(255,255,255,0.65) inset;
    --shadow-md: 0 8px 18px rgba(45,45,45,0.10), 0 3px 8px rgba(45,45,45,0.06), 0 1px 0 rgba(255,255,255,0.55) inset;
    --shadow-lg: 0 18px 44px rgba(45,45,45,0.14), 0 10px 22px rgba(45,45,45,0.08), 0 2px 0 rgba(255,255,255,0.65) inset;
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.42s cubic-bezier(0.18, 0.85, 0.22, 1);
    --heading-weight: 800;
    --body-line-height: 1.6;

    --focus-ring: rgba(var(--rgb-accent), 0.35);
    --outline-soft: rgba(45,45,45,0.18);
    --card-stroke: rgba(45,45,45,0.10);
}

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:
        0 1px 0 rgba(255,255,255,0.72) inset,
        0 10px 26px rgba(45,45,45,0.08),
        0 24px 60px rgba(45,45,45,0.10);
    padding: var(--space-card);
    transition:
        transform var(--transition),
        box-shadow var(--transition),
        border-color var(--transition),
        background-color var(--transition);
    background: linear-gradient(180deg, rgba(255,255,255,0.78), rgba(255,255,255,0.55));
    border: 1px solid rgba(var(--rgb-primary), .10);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition:
        transform var(--transition),
        box-shadow var(--transition),
        background-color var(--transition),
        border-color var(--transition),
        color var(--transition);
    border: 1px solid rgba(var(--rgb-primary), .14);
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration-color: rgba(var(--rgb-accent), 0.55); }

.card:hover, [class*="card"]:hover {
    transform: translateY(-6px);
    box-shadow:
        0 2px 0 rgba(255,255,255,0.76) inset,
        0 16px 40px rgba(45,45,45,0.12),
        0 32px 90px rgba(45,45,45,0.12);
    border-color: rgba(var(--rgb-accent), 0.26);
    background: linear-gradient(180deg, rgba(255,255,255,0.88), rgba(255,255,255,0.62));
}

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

/* news: list-view */
/* 列表模式 (图左文右) */
                .news-grid { display: flex; flex-direction: column; gap: var(--space-gap); }
                .news-grid .card { display: grid; grid-template-columns: 280px 1fr; }

/* 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: grid-3 */
.testimonial-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); 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: 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: wide */
/* 超宽 */
            .page-main { max-width: 1400px; margin: 0 auto; }

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(900px 420px at 20% 10%, rgba(var(--rgb-accent), 0.22), rgba(var(--rgb-accent), 0) 60%),
        radial-gradient(680px 360px at 80% 20%, rgba(255,255,255,0.65), rgba(255,255,255,0) 55%),
        linear-gradient(135deg, #faf8f3 0%, rgba(45,45,45,0.98) 55%, rgba(45,45,45,0.90) 100%);
}
.card { border: 1px solid rgba(var(--rgb-primary), .08); }
header, .header, .navbar { background: transparent; }

/* 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: 0.36s cubic-bezier(0.18, 0.9, 0.22, 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; }
}