.jsn-page-header{text-align:center;max-width:1000px;margin:0 auto;padding:24px 16px 8px}.jsn-layout{grid-template-columns:1fr 1fr;align-items:start;gap:24px;max-width:1000px;margin:0 auto;padding:0 16px;display:grid}.jsn-input-col{flex-direction:column;gap:12px;display:flex}.jsn-output-col{flex-direction:column;gap:12px;display:flex;position:sticky;top:16px}.jsn-indent-row{flex-wrap:wrap;align-items:center;gap:8px;max-width:1000px;margin:0 auto;padding:0 16px;display:flex}.jsn-indent-row label{color:var(--swp-ink-muted);font-size:13px}.jsn-indent-btn{border:1px solid var(--swp-border);border-radius:var(--r-pill);min-height:44px;font-size:13px;font-family:var(--font-mono);background:var(--swp-surface);cursor:pointer;padding:6px 12px}.jsn-indent-btn--active,.jsn-indent-btn[aria-pressed=true]{background:var(--swp-surface-alt);border-color:var(--swp-ink-muted);font-weight:700}.jsn-presets{flex-wrap:wrap;gap:6px;max-width:1000px;margin:0 auto 4px;padding:0 16px;display:flex}.jsn-chip{border:1px solid var(--swp-border);border-radius:var(--r-md);background:var(--swp-surface);cursor:pointer;text-align:left;flex-direction:column;justify-content:center;min-height:44px;padding:6px 10px;font-size:12px;transition:background .15s;display:flex}.jsn-chip:hover{background:var(--swp-surface-alt)}.jsn-chip-label{color:var(--swp-ink);font-size:13px;font-weight:600}.jsn-chip-desc{color:var(--swp-ink-muted);margin-top:2px;font-size:11px}.jsn-textarea{width:100%;min-height:320px;font-family:var(--font-mono);background:var(--swp-surface-code);color:var(--swp-ink);border:1px solid var(--swp-border);border-radius:var(--r-lg);resize:vertical;tab-size:2;white-space:pre;overflow-wrap:normal;box-sizing:border-box;padding:14px 16px;font-size:13px;line-height:1.6;display:block;overflow-x:auto}.jsn-textarea:focus{outline:2px solid var(--color-primary);outline-offset:1px}.jsn-btn-row{flex-wrap:wrap;gap:8px;display:flex}.jsn-format-btn{border-radius:var(--r-pill);background:var(--color-primary);min-height:44px;color:var(--color-primary-content);cursor:pointer;border:none;padding:10px 20px;font-size:14px;font-weight:700}.jsn-minify-btn,.jsn-copy-btn,.jsn-clear-btn{border-radius:var(--r-pill);cursor:pointer;border:1px solid var(--swp-border);background:var(--swp-surface);min-height:44px;padding:8px 16px;font-size:13px;font-weight:600}.jsn-output-wrap{flex-direction:column;gap:6px;display:flex}.jsn-output-label{text-transform:uppercase;letter-spacing:.06em;color:var(--swp-ink-muted);font-size:11px;font-weight:700}.jsn-output-pre{background:var(--swp-surface-code);border:1px solid var(--swp-border);border-radius:var(--r-lg);font-family:var(--font-mono);white-space:pre;tab-size:2;min-height:320px;max-height:600px;margin:0;padding:14px 16px;font-size:13px;line-height:1.6;overflow:auto}.jsn-key{color:#0d9488}.jsn-string{color:#ea580c}.jsn-number{color:#2563eb}.jsn-boolean{color:#7c3aed}.jsn-null{color:#64748b}.jsn-error-box{border-radius:var(--r-md);background:#fee2e2;border:1px solid #fca5a5;align-items:flex-start;gap:8px;padding:12px 14px;display:flex}.jsn-error-icon{flex-shrink:0;margin-top:2px;font-size:16px}.jsn-error-body{flex-direction:column;gap:2px;display:flex}.jsn-error-location{color:#991b1b;font-size:12px;font-weight:700;font-family:var(--font-mono)}.jsn-error-message{color:#7f1d1d;font-size:12px;font-family:var(--font-mono);white-space:pre-wrap;word-break:break-all;margin:0}.jsn-section-title{color:var(--swp-ink);margin:0 0 12px;font-size:16px;font-weight:700}.jsn-how-to,.jsn-related-section{max-width:1000px;margin:48px auto 0;padding:0 16px}.jsn-steps{padding-left:1.4em}.jsn-steps li{margin-bottom:8px;line-height:1.6}.jsn-related-list{padding:0;list-style:none}.jsn-related-list li{margin-bottom:6px}.jsn-related-tools{flex-direction:column;gap:6px;display:flex}.jsn-related-link{color:var(--color-primary);text-decoration:none}.jsn-related-link:hover{text-decoration:underline}@media (prefers-reduced-motion:reduce){.jsn-chip{transition:none}}@media (width<=639px){.jsn-layout{grid-template-columns:1fr;gap:20px;overflow-x:hidden}.jsn-input-col{order:1}.jsn-output-col{order:2;position:static}.jsn-textarea,.jsn-output-pre{min-height:200px;font-size:12px}.jsn-btn-row{gap:6px}.jsn-format-btn,.jsn-minify-btn,.jsn-copy-btn,.jsn-clear-btn{padding:8px 12px;font-size:12px}.jsn-chip-desc{display:none}}.jsn-body-text{color:var(--swp-ink);margin:0 0 12px;font-size:15px;line-height:1.8}.jsn-use-cases{flex-direction:column;gap:14px;margin:0;padding:0;list-style:none;display:flex}.jsn-use-cases li{color:var(--swp-ink);font-size:15px;line-height:1.7}.jsn-faq{margin:0}.jsn-faq dt{color:var(--swp-ink);margin-top:16px;font-size:15px;font-weight:700}.jsn-faq dt:first-child{margin-top:0}.jsn-faq dd{color:var(--swp-ink-2);margin:6px 0 0;font-size:15px;line-height:1.7}