:root {
    --color-primary: #f2b544;
    --color-primary-dark: #b57f1e;
    --color-accent: #a78bfa;
    --color-surface: #1c1c2b;
    --color-text: #f4ead6;
    --rgb-primary: 242,181,68;
    --rgb-accent: 167,139,250;
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 28px;
    --radius-xl: 40px;
    --shadow-sm: 0 2px 12px rgba(0,0,0,.45), 0 0 0 1px rgba(var(--rgb-primary),.06);
    --shadow-md: 0 12px 35px rgba(0,0,0,.5), 0 0 0 1px rgba(var(--rgb-primary),.1), 0 18px 40px -16px rgba(var(--rgb-accent),.12);
    --shadow-lg: 0 24px 70px rgba(0,0,0,.6), 0 0 50px rgba(var(--rgb-accent),.08), 0 0 0 1px rgba(var(--rgb-primary),.14);
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;
    --transition: 0.5s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 800;
    --body-line-height: 1.7;
    accent-color: var(--color-primary);
    caret-color: var(--color-accent);
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: radial-gradient(1200px 800px at 50% -10%, rgba(var(--rgb-primary), .18), transparent 60%), linear-gradient(180deg, #0f0f1a 0%, #161622 55%, #0c0c14 100%); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 2px 14px rgba(0,0,0,.35); }
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); background: linear-gradient(145deg, rgba(255,255,255,.055), rgba(255,255,255,.01)), var(--color-surface); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, rgba(var(--rgb-primary),.3), rgba(var(--rgb-accent),.18)), var(--color-surface); color: #fff8e7; box-shadow: 0 6px 22px rgba(0,0,0,.4), 0 0 0 1px rgba(var(--rgb-primary),.18); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-shadow: 0 0 14px rgba(var(--rgb-primary),.2); }

/* ========== 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; }
                .hero-content { position: relative; z-index: 1; }

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

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }

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

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }

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

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

/* 条件性装饰 */
.card {
    border: 1px solid transparent;
    background:
        radial-gradient(120% 100% at 15% 0%, rgba(var(--rgb-primary), .1), transparent 55%) padding-box,
        linear-gradient(145deg, #20202f 0%, #171724 100%) padding-box,
        linear-gradient(135deg, rgba(var(--rgb-primary), .5), rgba(var(--rgb-accent), .3)) border-box;
}
header, .header, .navbar { box-shadow: 0 1px 0 rgba(255,255,255,.04) inset, 0 12px 35px rgba(0,0,0,.4), 0 0 0 1px rgba(var(--rgb-primary),.08); background: rgba(15,15,26,.72); backdrop-filter: blur(16px); }

/* 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; }
}