:root{--yl-color-brand-primary:#2563eb;--yl-color-brand-deep:#1e3a8a;--yl-color-brand-primary-light:#eff6ff;--yl-color-ai-accent:#2bb5a8;--yl-color-ai-accent-dark:#0f766e;--yl-color-ai-accent-bg:#ecfdf5;--yl-color-info:#2563eb;--yl-color-info-bg:#eff6ff;--yl-color-success:#10b981;--yl-color-success-bg:#ecfdf5;--yl-color-warning:#f59e0b;--yl-color-warning-bg:#fff7ed;--yl-color-danger:#d14343;--yl-color-danger-bg:#fef2f2;--yl-color-white:#fff;--yl-color-page:#f8fafc;--yl-color-page-alt:#fafbfc;--yl-color-surface:#fff;--yl-color-subtle:#f1f5f9;--yl-color-border:#e2e8f0;--yl-color-border-strong:#cbd5e1;--yl-color-text-title:#1e3a8a;--yl-color-text-primary:#1e293b;--yl-color-text-body:#475569;--yl-color-text-secondary:#64748b;--yl-color-text-tertiary:#94a3b8;--yl-color-text-inverse:#fff;--yl-font-sans:-apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans", "Microsoft YaHei", "Inter", sans-serif;--yl-font-numeric:"Inter", "DIN Alternate", "SF Pro Display", -apple-system, BlinkMacSystemFont, sans-serif;--yl-font-size-display:56px;--yl-font-size-page-title:24px;--yl-font-size-section-title:20px;--yl-font-size-card-title:16px;--yl-font-size-body:15px;--yl-font-size-caption:13px;--yl-font-size-meta:12px;--yl-font-size-micro:11px;--yl-font-size-data:32px;--yl-font-size-data-small:24px;--yl-line-height-tight:1.25;--yl-line-height-normal:1.5;--yl-line-height-relaxed:1.65;--yl-space-0:0;--yl-space-1:4px;--yl-space-2:8px;--yl-space-3:12px;--yl-space-4:16px;--yl-space-5:20px;--yl-space-6:24px;--yl-space-8:32px;--yl-space-10:40px;--yl-space-12:48px;--yl-space-16:64px;--yl-space-20:80px;--yl-radius-xs:8px;--yl-radius-sm:12px;--yl-radius-md:14px;--yl-radius-lg:16px;--yl-radius-xl:20px;--yl-radius-card:24px;--yl-radius-panel:32px;--yl-radius-pill:999px;--yl-shadow-card:0 2px 12px #0f172a0a;--yl-shadow-card-hover:0 8px 24px #0f172a14;--yl-shadow-floating:0 12px 32px #0f172a1f;--yl-shadow-device:0 25px 50px #0f172a40;--yl-size-touch-target:44px;--yl-size-button-lg:48px;--yl-size-button-md:44px;--yl-size-button-sm:40px;--yl-size-mobile-width:375px;--yl-size-mobile-safe-viewport:812px;--yl-size-admin-sidebar:240px;--yl-size-admin-topbar:64px;--yl-motion-fast:.12s;--yl-motion-normal:.18s;--yl-motion-slow:.24s;--yl-motion-ease:cubic-bezier(.2, 0, 0, 1)}.yl-theme{color:var(--yl-color-text-body);font-family:var(--yl-font-sans);line-height:var(--yl-line-height-normal);letter-spacing:0;background:linear-gradient(135deg,#f5f8fc 0%,#fff 50%,#eff6ff 100%)}.yl-card{background:var(--yl-color-surface);border:1px solid var(--yl-color-border);border-radius:var(--yl-radius-card);box-shadow:var(--yl-shadow-card)}.yl-button-primary{min-height:var(--yl-size-button-md);border-radius:var(--yl-radius-lg);color:var(--yl-color-text-inverse);background:linear-gradient(135deg, var(--yl-color-brand-primary) 0%, var(--yl-color-brand-deep) 100%);font-size:var(--yl-font-size-body);font-weight:600}.yl-ai-badge{color:var(--yl-color-ai-accent-dark);background:var(--yl-color-ai-accent-bg);border-radius:var(--yl-radius-pill);border:1px solid #2bb5a833}