:root{--primary:#2563eb;--primary-dark:#1d4ed8;--accent:#0ea5e9;--surface:#ffffff;--surface-muted:#f1f5f9;--border:#e2e8f0;--text-main:#0f172a;--text-muted:#64748b;--shadow-soft:0 20px 45px rgba(15,23,42,0.08);--gradient:linear-gradient(135deg,#2563eb 0%,#1d4ed8 100%);--pz-accent:#0d9488;--pz-accent-soft:rgba(13,148,136,0.12);--pz-ink:#0f172a;--pz-card:#f8fafc;--pz-border:rgba(15,23,42,0.08);--pz-glow:rgba(13,148,136,0.35);}
.pz-prose{margin:0 auto 2.5rem;padding:0 0.25rem;}
.pz-prose h2{font-size:clamp(1.25rem,3vw,1.5rem);font-weight:700;margin:0 0 0.75rem;line-height:1.25;color:var(--text-main);}
.pz-prose p{color:var(--text-muted);line-height:1.65;margin:0 0 1rem;}
.pz-prose ul{margin:0 0 1.25rem;padding-left:1.25rem;color:var(--text-muted);}
.pz-prose li{margin-bottom:0.5rem;}
.pz-callout{border-left:4px solid var(--pz-accent);background:var(--surface-muted);padding:1rem 1.25rem;border-radius:0 12px 12px 0;margin:1.5rem 0;}
.pz-callout p:last-child{margin-bottom:0;}
.pz-dl{display:grid;gap:1rem;margin:1.5rem 0;}
@media (min-width:768px){.pz-dl{grid-template-columns:repeat(2,1fr);gap:1.25rem;}}
.pz-tip-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:1rem 1.1rem;box-shadow:var(--shadow-soft);}
.pz-tip-card strong{display:block;font-size:0.8125rem;text-transform:uppercase;letter-spacing:0.06em;color:var(--pz-accent);margin-bottom:0.35rem;}
.pz-tip-card p{margin:0;font-size:0.9375rem;color:var(--text-muted);line-height:1.55;}
.pz-examples{display:grid;gap:1rem;margin:1.5rem 0;}
@media (min-width:640px){.pz-examples{grid-template-columns:repeat(2,1fr);}}
.pz-ex-card{background:linear-gradient(145deg,var(--surface) 0%,var(--surface-muted) 100%);border:1px solid var(--border);border-radius:16px;padding:1.15rem 1.25rem;}
.pz-ex-card h3{font-size:0.75rem;text-transform:uppercase;letter-spacing:0.08em;color:var(--text-muted);margin:0 0 0.35rem;}
.pz-ex-card p{margin:0;font-size:0.9375rem;color:var(--text-main);line-height:1.55;}
.pz-interface{margin-bottom:3rem;}
.pz-interface h2{font-size:clamp(1.15rem,2.8vw,1.35rem);font-weight:700;margin:0 0 1rem;color:var(--text-main);}
.pz-shell{background:var(--surface);border:1px solid var(--border);border-radius:20px;overflow:hidden;box-shadow:0 4px 24px rgba(15,23,42,0.06);}
.pz-dropzone{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:min(52vh,320px);padding:2rem 1.25rem;text-align:center;cursor:pointer;background:linear-gradient(135deg,var(--pz-accent-soft) 0%,transparent 55%),var(--surface-muted);border:2px dashed var(--pz-border);border-radius:18px;margin:1rem;transition:border-color 0.2s ease,box-shadow 0.2s ease;}
.pz-dropzone:hover,.pz-dropzone.pz-dropzone--active{border-color:var(--pz-accent);box-shadow:0 0 0 4px var(--pz-accent-soft);}
.pz-dropzone-icon{width:56px;height:56px;border-radius:16px;background:var(--pz-accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:1rem;box-shadow:0 8px 20px var(--pz-glow);}
.pz-dropzone-title{font-weight:700;font-size:1.125rem;margin:0 0 0.35rem;color:var(--text-main);}
.pz-dropzone-hint{margin:0;font-size:0.9375rem;color:var(--text-muted);}
.pz-dropzone-hint span{color:var(--pz-accent);font-weight:600;}
.pz-workspace{display:none;padding:0;}
.pz-workspace.pz-workspace--open{display:block;}
.pz-toolbar{display:flex;flex-wrap:wrap;gap:0.75rem 1rem;align-items:center;padding:1rem 1.25rem;background:var(--surface-muted);border-bottom:1px solid var(--border);}
.pz-toolbar-label{font-size:0.6875rem;font-weight:700;text-transform:uppercase;letter-spacing:0.07em;color:var(--text-muted);width:100%;margin:0;}
@media (min-width:768px){.pz-toolbar-label{width:auto;margin-right:0.5rem;}}
.pz-level-wrap{flex:1;min-width:min(100%,200px);display:flex;align-items:center;gap:0.75rem;}
.pz-range{-webkit-appearance:none;appearance:none;flex:1;height:6px;border-radius:999px;background:linear-gradient(90deg,#1e293b 0%,#94a3b8 35%,#f1f5f9 70%,#fff 100%);outline:none;}
.pz-range::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;border-radius:50%;background:var(--pz-accent);border:3px solid #fff;box-shadow:0 2px 8px rgba(0,0,0,0.15);cursor:pointer;}
.pz-range::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--pz-accent);border:3px solid #fff;box-shadow:0 2px 8px rgba(0,0,0,0.15);cursor:pointer;}
.pz-badge{min-width:2.5rem;text-align:center;font-weight:700;font-size:0.9375rem;padding:0.35rem 0.6rem;border-radius:10px;background:var(--surface);border:1px solid var(--border);color:var(--pz-accent);}
.pz-toggle{display:flex;align-items:center;gap:0.5rem;font-size:0.875rem;color:var(--text-main);cursor:pointer;user-select:none;}
.pz-toggle input{width:1.1rem;height:1.1rem;accent-color:var(--pz-accent);}
.pz-actions{display:flex;flex-wrap:wrap;gap:0.5rem;margin-left:auto;}
.pz-btn{display:inline-flex;align-items:center;justify-content:center;gap:0.4rem;padding:0.55rem 1rem;border-radius:12px;font-weight:600;font-size:0.875rem;border:none;cursor:pointer;transition:transform 0.15s ease,opacity 0.15s ease;}
.pz-btn:active{transform:scale(0.98);}
.pz-btn--ghost{background:var(--surface);color:var(--text-main);border:1px solid var(--border);}
.pz-btn--primary{background:var(--pz-accent);color:#fff;}
.pz-btn:disabled{opacity:0.45;cursor:not-allowed;transform:none;}
.pz-viewport{padding:1rem 1.25rem 1.5rem;}
.pz-tabs{display:flex;gap:0.35rem;margin-bottom:1rem;padding:0.25rem;background:var(--surface-muted);border-radius:12px;}
@media (min-width:768px){.pz-tabs{display:none;}}
.pz-tab{flex:1;padding:0.55rem 0.75rem;border:none;border-radius:10px;font-weight:600;font-size:0.8125rem;background:transparent;color:var(--text-muted);cursor:pointer;transition:background 0.2s,color 0.2s;}
.pz-tab[aria-selected="true"]{background:var(--surface);color:var(--text-main);box-shadow:var(--shadow-soft);}
.pz-grid{display:grid;gap:1.25rem;}
@media (min-width:768px){.pz-grid{grid-template-columns:1fr 1fr;gap:1.5rem;}}
.pz-panel{display:none;flex-direction:column;gap:0.5rem;}
.pz-panel.pz-active{display:flex;}
@media (min-width:768px){.pz-panel{display:flex;}}
.pz-panel-cap{font-size:0.6875rem;font-weight:700;text-transform:uppercase;letter-spacing:0.08em;color:var(--text-muted);margin:0;}
.pz-canvas-wrap{background:repeating-conic-gradient(#e2e8f0 0% 25%,#f8fafc 0% 50%) 50% / 16px 16px;border-radius:14px;padding:0.5rem;border:1px solid var(--border);overflow:auto;max-height:min(55vh,420px);-webkit-overflow-scrolling:touch;}
.pz-canvas-wrap canvas{display:block;max-width:100%;height:auto;margin:0 auto;border-radius:8px;box-shadow:0 4px 20px rgba(15,23,42,0.08);}
.pz-rail{margin-top:2.5rem;margin-bottom:2rem;}
.pz-rail h2{margin-bottom:1rem;}