:root {
    --color-primary: #7a1f1a;
    --color-primary-dark: #5f1713;
    --color-accent: #6b705c;
    --color-surface: #f5f1e8;
    --color-text: #1a1a1a;
    --rgb-primary: 122,31,26;
    --rgb-accent: 107,112,92;
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 10px;
    --radius-xl: 14px;
    --shadow-sm: 0 1px 0 rgba(0,0,0,.06), 0 3px 10px rgba(0,0,0,.06);
    --shadow-md: 0 2px 0 rgba(0,0,0,.06), 0 8px 18px rgba(0,0,0,.08);
    --shadow-lg: 0 3px 0 rgba(0,0,0,.07), 0 18px 36px rgba(0,0,0,.12);
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;
    --transition: 220ms cubic-bezier(0.2, 0.75, 0.1, 1);
    --heading-weight: 800;
    --body-line-height: 1.7;
}

body { color: var(--color-text); 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:
        0 1px 0 rgba(0,0,0,.06),
        0 10px 22px rgba(17,17,17,.10),
        inset 0 1px 0 rgba(255,255,255,.45);
    padding: var(--space-card);
    transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition), background-color var(--transition);
    border: 1px solid rgba(26,26,26,.10);
    background: rgba(245,241,232,.94);
}
.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);
    box-shadow: 0 1px 0 rgba(0,0,0,.08);
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); }
a:not([class]):hover { color: #8f2a24; text-shadow: 0 1px 0 rgba(255,255,255,.35); }

section, .section { color: inherit; background: transparent; }
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(1200px 600px at 10% 20%, rgba(196,69,54,.22) 0%, rgba(196,69,54,0) 55%),
        radial-gradient(900px 520px at 90% 10%, rgba(107,112,92,.20) 0%, rgba(107,112,92,0) 52%),
        linear-gradient(135deg, #f5f1e8 0%, #efe7d5 32%, #f5f1e8 100%);
    border-bottom: 1px solid rgba(26,26,26,.08);
}

.card { border: 1px solid rgba(var(--rgb-primary), .08); }

.card, [class*="card"] { backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }

:focus-visible { outline: 2px solid rgba(107,112,92,.55); outline-offset: 2px; }
::selection { background: rgba(196,69,54,.22); color: #1a1a1a; }
input, textarea, select { caret-color: var(--color-primary-dark); accent-color: var(--color-accent); }

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

/* news: featured-top */
/* 首篇横跨全宽 */
                .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
                .news-grid > *:first-child { grid-column: span 3; }

/* 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: minimal */
.hero { padding: 2rem 0; } .hero-content { max-width: 560px; }

/* 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 22s linear infinite; }
                @keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }

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

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #7a1f1a, #5f1713); }
.card { border: 1px solid rgba(var(--rgb-primary), .08); }

/* 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; }
}