:root {
    --color-primary: #6d46a1;
    --color-primary-dark: #3c2164;
    --color-accent: #c19131;
    --color-surface: #f6efe1;
    --color-text: #21172e;
    --color-stage: #0f0f1a;
    --color-body-text: #e4dac8;
    --color-card: #fffaf1;
    --rgb-primary: 109,70,161;
    --rgb-accent: 193,145,49;
    --radius-sm: 2px;
    --radius-md: 4px;
    --radius-lg: 6px;
    --radius-xl: 8px;
    --shadow-sm: 0 1px 2px rgba(15,15,26,.08), 0 0 1px rgba(15,15,26,.04);
    --shadow-md: 0 2px 4px rgba(15,15,26,.10), 0 1px 2px rgba(15,15,26,.06);
    --shadow-lg: 0 6px 12px rgba(15,15,26,.12), 0 2px 4px rgba(15,15,26,.08);
    --space-section: 4rem;
    --space-card: 1.6rem;
    --space-gap: 1.2rem;
    --transition: 150ms cubic-bezier(.25,.1,.25,1);
    --heading-weight: 800;
    --body-line-height: 1.65;
    accent-color: var(--color-accent);
    caret-color: var(--color-accent);
}

body { background-color: var(--color-stage); color: var(--color-body-text); line-height: var(--body-line-height); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 1px 2px rgba(15,15,26,.08); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] { background-color: var(--color-card); color: var(--color-text); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); padding: var(--space-card); transition: var(--transition); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-sm); transition: var(--transition); background: linear-gradient(135deg, var(--color-accent), #9a7726); color: #241a05; box-shadow: var(--shadow-sm); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration-color: var(--color-accent); }

/* ========== 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: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }

/* hero: overlay */
/* 全屏背景+文字覆盖 */
.hero { position: relative; min-height: 70vh; display: flex; align-items: center; background: radial-gradient(ellipse 80% 60% at 50% 20%, rgba(193,145,49,.18), transparent 70%); }
.hero-content { position: relative; z-index: 1; text-shadow: 0 1px 2px rgba(15,15,26,.25); }

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
.testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }

/* partners: scroll */
/* 自动滚动 */
.partner-grid { display: flex; gap: 1.75rem; overflow: hidden; animation: partnerScroll 24s linear infinite; }
@keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }

/* stats: inline */
/* 水平排列 */
.stats-grid { display: flex; justify-content: center; gap: 2.5rem; }

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }

/* Page Layout: wide */
/* 超宽 */
.page-main { max-width: 1400px; margin: 0 auto; background-color: var(--color-surface); color: var(--color-text); border-radius: var(--radius-xl); box-shadow: 0 0 0 1px rgba(193,145,49,.18), 0 10px 24px rgba(0,0,0,.35); }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); filter: brightness(1.02); }
.card { border-left: 3px solid var(--color-accent); }

/* 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; }
}