:root {
    --color-primary: #c44536;
    --color-primary-dark: #8c2f25;
    --color-accent: #e07f6e;
    --color-surface: #f5f1e8;
    --color-text: #1a1a1a;
    --rgb-primary: 196, 69, 54;
    --rgb-accent: 224, 127, 110;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --shadow-sm: 0 2px 8px rgba(196, 69, 54, 0.12);
    --shadow-md: 0 8px 24px rgba(196, 69, 54, 0.16), 0 0 24px rgba(196, 69, 54, 0.12);
    --shadow-lg: 0 16px 40px rgba(196, 69, 54, 0.24), 0 0 32px rgba(196, 69, 54, 0.2);
    --space-section: 2.4rem;
    --space-card: 1.2rem;
    --space-gap: 0.9rem;
    --transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 600;
    --body-line-height: 1.6;
    accent-color: var(--color-primary);
    caret-color: var(--color-primary);
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    background: var(--color-surface);
    line-height: var(--body-line-height);
}
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: var(--shadow-md);
    padding: var(--space-card);
    transition: var(--transition);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    box-shadow: 0 4px 18px rgba(196, 69, 54, 0.22);
    transition: var(--transition);
}
a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
}

/* ========== 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: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }

/* hero: centered */
.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    text-shadow: 0 2px 24px rgba(26, 26, 26, 0.35);
}

/* 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: 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: full-bg */
.cta-section {
    background: var(--color-primary);
    color: #fffbf2;
    padding: 4.8rem 2.4rem;
    box-shadow: 0 0 32px rgba(196, 69, 54, 0.35);
}

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover {
    transform: translateY(-4px);
    box-shadow: 0 0 32px rgba(196, 69, 54, 0.6), 0 16px 40px rgba(196, 69, 54, 0.28);
}
a:not([class]):hover { color: var(--color-accent); }
.hero, [class*="hero"], section:first-of-type {
    background: linear-gradient(135deg, #1a1a1a 0%, #4a2018 55%, #c44536 100%);
    box-shadow: 0 0 24px rgba(196, 69, 54, 0.4);
    animation: glow-pulse 5s ease-in-out infinite;
}
.card { border-left: 3px solid var(--color-primary); }
header, .header, .navbar {
    background: transparent;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

@keyframes glow-pulse {
    0%, 100% { box-shadow: 0 0 24px rgba(196, 69, 54, 0.4); }
    50% { box-shadow: 0 0 40px rgba(196, 69, 54, 0.65); }
}

/* 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; }
}