:root {
    --color-primary: #b45309;
    --color-primary-dark: #7c2d12;
    --color-accent: #f59e0b;
    --color-surface: #fef3c7;
    --color-text: #1f2937;
    --rgb-primary: 180,83,9;
    --rgb-accent: 245,158,11;
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 18px;
    --radius-xl: 26px;
    --shadow-sm: 0 1px 0 rgba(0,0,0,.06), 0 10px 22px rgba(245,158,11,.08);
    --shadow-md: 0 10px 28px rgba(0,0,0,.10), 0 2px 10px rgba(245,158,11,.14), 0 0 0 1px rgba(180,83,9,.10);
    --shadow-lg: 0 18px 45px rgba(0,0,0,.14), 0 6px 22px rgba(245,158,11,.18), 0 0 0 1px rgba(180,83,9,.12);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 420ms cubic-bezier(0.2, 0.8, 0.2, 1);
    --heading-weight: 800;
    --body-line-height: 1.65;
}

body { color: var(--color-text); line-height: var(--body-line-height); background: radial-gradient(1200px 600px at 18% -10%, rgba(245,158,11,.10), rgba(245,158,11,0) 55%), radial-gradient(900px 500px at 85% 0%, rgba(180,83,9,.12), rgba(180,83,9,0) 52%), var(--color-surface); }
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 10px 28px rgba(0,0,0,.10), 0 2px 10px rgba(245,158,11,.14), 0 0 0 1px rgba(180,83,9,.10); padding: var(--space-card); transition: transform 420ms cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 420ms cubic-bezier(0.2, 0.8, 0.2, 1), background-color 420ms cubic-bezier(0.2, 0.8, 0.2, 1); background: linear-gradient(180deg, rgba(255,255,255,.55), rgba(255,255,255,.25)); }
.card:hover, [class*="card"]:hover { box-shadow: 0 18px 45px rgba(0,0,0,.14), 0 8px 26px rgba(245,158,11,.22), 0 0 0 1px rgba(245,158,11,.26), 0 0 32px rgba(245,158,11,.45); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: transform 420ms cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 420ms cubic-bezier(0.2, 0.8, 0.2, 1), background-color 420ms cubic-bezier(0.2, 0.8, 0.2, 1), color 420ms cubic-bezier(0.2, 0.8, 0.2, 1), border-color 420ms cubic-bezier(0.2, 0.8, 0.2, 1); box-shadow: 0 10px 24px rgba(0,0,0,.10), 0 0 0 1px rgba(180,83,9,.18); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-shadow: 0 1px 0 rgba(255,255,255,.35); }
a:not([class]):hover, a:not([class]):focus { color: var(--color-accent); text-shadow: 0 0 24px rgba(245,158,11,.35); }

@keyframes sidebarGlowPulse {
    0% { box-shadow: 0 0 0 1px rgba(245,158,11,.20), 0 0 18px rgba(245,158,11,.18); }
    50% { box-shadow: 0 0 0 1px rgba(245,158,11,.32), 0 0 28px rgba(245,158,11,.34); }
    100% { box-shadow: 0 0 0 1px rgba(245,158,11,.20), 0 0 18px rgba(245,158,11,.18); }
}

/* ========== 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-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; }

/* 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: 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 */
.card { border: 1px solid rgba(var(--rgb-primary), .12); }
header, .header, .navbar { background: linear-gradient(180deg, rgba(37,46,58,.02), rgba(37,46,58,.00)); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 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; --radius-lg: 16px; --radius-md: 12px; }
    .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; }
}