:root {
    --color-primary: #c44536;
    --color-primary-dark: #9f2f27;
    --color-accent: #6b705c;
    --color-surface: #f5f1e8;
    --color-text: #1a1a1a;
    --rgb-primary: 196,69,54;
    --rgb-accent: 107,112,92;

    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 18px;
    --radius-xl: 26px;

    --shadow-sm:
        0 1px 0 rgba(0,0,0,0.04),
        0 10px 22px rgba(26,26,26,0.06);
    --shadow-md:
        0 3px 10px rgba(26,26,26,0.08),
        0 18px 40px -18px rgba(26,26,26,0.18);
    --shadow-lg:
        0 10px 28px -14px rgba(26,26,26,0.22),
        0 28px 70px -38px rgba(26,26,26,0.28);

    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;

    --transition: 360ms cubic-bezier(0.16, 1, 0.3, 1);

    --heading-weight: 700;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background:
        radial-gradient(1200px 700px at 12% -10%, rgba(196,69,54,0.08), transparent 55%),
        radial-gradient(900px 560px at 92% 0%, rgba(107,112,92,0.09), transparent 52%),
        linear-gradient(180deg, #f5f1e8 0%, #f6f2ea 45%, #f7f3ec 100%);
    caret-color: var(--color-primary);
    accent-color: var(--color-primary);
}
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(255,255,255,0.65) inset,
        0 10px 26px -14px rgba(26,26,26,0.22),
        0 26px 70px -50px rgba(26,26,26,0.26);
    padding: var(--space-card);
    transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), border-color var(--transition);
    border: 1px solid rgba(26,26,26,0.08);
    background: rgba(245,241,232,0.85);
    backdrop-filter: blur(6px);
}

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

a:not([class]) {
    color: var(--color-primary);
    transition: color var(--transition), text-shadow var(--transition);
    text-shadow: 0 0 0 rgba(0,0,0,0);
}

/* ========== 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: 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: centered */
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }

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

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

/* cta: card-style */
.cta-inner {
    background:
        radial-gradient(1000px 420px at 20% 0%, rgba(196,69,54,0.18), transparent 55%),
        radial-gradient(900px 520px at 90% 30%, rgba(107,112,92,0.22), transparent 55%),
        linear-gradient(180deg, rgba(245,241,232,1) 0%, rgba(245,241,232,0.86) 100%);
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
    box-shadow:
        0 1px 0 rgba(255,255,255,0.7) inset,
        0 18px 50px -28px rgba(26,26,26,0.28),
        0 40px 120px -90px rgba(26,26,26,0.30);
    border: 1px solid rgba(26,26,26,0.08);
}

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
            .page-main { max-width: 1200px; margin: 0 auto; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover {
    transform: translateY(-6px);
    box-shadow:
        0 1px 0 rgba(255,255,255,0.7) inset,
        0 18px 46px -26px rgba(26,26,26,0.34),
        0 44px 120px -90px rgba(26,26,26,0.35);
    border-color: rgba(196,69,54,0.26);
}

.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(900px 520px at 15% 10%, rgba(196,69,54,0.40), transparent 60%),
        radial-gradient(800px 560px at 90% 30%, rgba(107,112,92,0.34), transparent 55%),
        linear-gradient(135deg, #f5f1e8 0%, rgba(245,241,232,0.65) 35%, rgba(26,26,26,0.03) 100%);
    border-radius: var(--radius-xl);
    box-shadow:
        0 1px 0 rgba(255,255,255,0.65) inset,
        0 26px 80px -50px rgba(26,26,26,0.24);
    border: 1px solid rgba(26,26,26,0.06);
}

.card { border-left: 4px solid rgba(196,69,54,0.95); }
header, .header, .navbar {
    background: transparent;
    backdrop-filter: none;
}

/* 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; }
}