:root {
    --color-primary: #6b705c;
    --color-primary-dark: #1f2420;
    --color-accent: #c44536;
    --color-surface: #f5f1e8;
    --color-text: #1a1a1a;
    --rgb-primary: 107,112,92;
    --rgb-accent: 196,69,54;
    --radius-sm: 2px;
    --radius-md: 3px;
    --radius-lg: 5px;
    --radius-xl: 6px;
    --shadow-sm: 0 1px 0 rgba(26,26,26,.10);
    --shadow-md: 0 1px 0 rgba(26,26,26,.10), 0 6px 14px rgba(26,26,26,.06);
    --shadow-lg: 0 2px 0 rgba(26,26,26,.12), 0 10px 22px rgba(26,26,26,.08), 0 1px 4px rgba(196,69,54,.10);
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;
    --transition: 220ms cubic-bezier(0.2, 0.8, 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); }
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 0 0 1px rgba(26,26,26,.06),
        0 1px 0 rgba(26,26,26,.10),
        0 10px 20px rgba(26,26,26,.06);
    padding: var(--space-card);
    transition: var(--transition);
    background: linear-gradient(180deg, rgba(245,241,232,.9), rgba(245,241,232,.75));
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    box-shadow: 0 0 0 1px rgba(26,26,26,.10);
}
a:not([class]) { color: var(--color-primary-dark); transition: var(--transition); text-shadow: none; }

/* ========== 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: 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: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 20s linear infinite; }
                @keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* 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: full-bg */
.cta-section { background: linear-gradient(135deg, #6b705c 0%, #1f2420 58%, rgba(196,69,54,.92) 120%); color: #fff; padding: 4rem 2rem; box-shadow: inset 0 0 0 1px rgba(245,241,232,.10); }

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover {
    transform: translateY(-3px);
    box-shadow:
        0 0 0 1px rgba(196,69,54,.18),
        0 2px 0 rgba(26,26,26,.14),
        0 16px 26px rgba(26,26,26,.10),
        0 1px 6px rgba(196,69,54,.14);
}
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(1200px 380px at 20% 0%, rgba(196,69,54,.20), rgba(196,69,54,0) 55%),
        radial-gradient(900px 420px at 90% 20%, rgba(245,241,232,.30), rgba(245,241,232,0) 58%),
        linear-gradient(135deg, #6b705c 0%, #1f2420 55%, #0f1411 120%);
}
header, .header, .navbar {
    box-shadow:
        0 0 0 1px rgba(26,26,26,.06),
        0 2px 10px rgba(26,26,26,.08),
        0 1px 0 rgba(245,241,232,.25);
    background: rgba(245,241,232,.88);
    backdrop-filter: saturate(120%) blur(8px);
}

/* 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; }
}