:root{--bg:#f8f9fa;--surface:#fff;--surface-alt:#f1f3f5;--sunken:#e9ecef;--text:#212529;--text2:#495057;--text3:#868e96;--border:#dee2e6;--border-s:#ced4da;--accent:#228be6;--accent-h:#1971c2;--accent-bg:#e7f5ff;--green:#2b8a3e;--green-bg:#d3f9d8;--red:#c92a2a;--red-bg:#ffe3e3;--orange:#e67700;--orange-bg:#fff4e6;--syn-string:#2b8a3e;--syn-number:#e67700;--syn-boolean:#5c7cfa;--syn-null:#868e96;--syn-key:#c92a2a;--syn-bracket:#495057;--mono:"JetBrains Mono",monospace;--sans:"DM Sans",system-ui,sans-serif;--r:8px;--r2:12px;--shadow-card:0 1px 3px rgba(0,0,0,.04),0 4px 12px rgba(0,0,0,.03);--shadow-card-hover:0 2px 8px rgba(0,0,0,.06),0 8px 24px rgba(0,0,0,.05)}.dark{--bg:#111113;--surface:#1c1c1e;--surface-alt:#232326;--sunken:#18181a;--text:#e4e4e7;--text2:#a1a1aa;--text3:#63636e;--border:#2c2c30;--border-s:#3f3f44;--accent:#4fc3f7;--accent-h:#29b6f6;--accent-bg:#1a3a4a;--green:#66bb6a;--green-bg:#1b3a1b;--red:#ef5350;--red-bg:#3a1b1b;--orange:#ffa726;--orange-bg:#3a2a1b;--syn-string:#ce9178;--syn-number:#b5cea8;--syn-boolean:#569cd6;--syn-null:gray;--syn-key:#9cdcfe;--syn-bracket:gray;--shadow-card:0 1px 3px rgba(0,0,0,.2),0 4px 12px rgba(0,0,0,.15);--shadow-card-hover:0 2px 8px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.2)}*,:after,:before{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{background:var(--bg);color:var(--text);font-family:var(--sans);font-size:15px;line-height:1.6}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.wrap{margin:0 auto;max-width:1200px;padding:32px 24px 40px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r2);box-shadow:var(--shadow-card);overflow:hidden}.card.loading{animation:loading-stripe .8s linear infinite;background:repeating-linear-gradient(-45deg,transparent,transparent 10px,var(--surface-alt) 10px,var(--surface-alt) 20px);background-size:28px 28px;color:var(--text3);font-family:var(--mono);font-size:13px;padding:52px 32px;text-align:center}@keyframes loading-stripe{0%{background-position:0 0}to{background-position:28px 0}}.panel-label{align-items:center;background:var(--surface-alt);border-bottom:1px solid var(--border);color:var(--text3);display:flex;font-family:var(--mono);font-size:11px;font-weight:600;gap:8px;letter-spacing:.5px;padding:6px 12px;text-transform:uppercase}.panel-label .dot{background:var(--accent);border-radius:50%;height:6px;width:6px}.toolbar{align-items:center;background:var(--surface-alt);border-bottom:1px solid var(--border);display:flex;flex-wrap:wrap;gap:6px;padding:10px 14px}.toolbar .spacer{flex:1}.toolbar 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var(--border);border-radius:var(--r);box-shadow:var(--shadow-card);display:block;padding:14px 16px;text-decoration:none;transition:all .15s}.tool-link:hover{border-color:var(--accent);box-shadow:var(--shadow-card-hover);text-decoration:none;transform:translateY(-1px)}.tool-link strong{color:var(--text);display:block;font-family:var(--mono);font-size:13px;margin-bottom:3px}.tool-link span{color:var(--text3);font-size:12px}.app-footer{border-top:1px solid var(--border);color:var(--text3);font-family:var(--mono);font-size:11px;margin:48px auto 0;max-width:1200px;padding:24px 20px;text-align:center}.app-footer a{color:var(--accent);text-decoration:none}kbd{background:var(--surface-alt);border:1px solid var(--border);border-radius:4px;box-shadow:0 1px 0 var(--border);color:var(--text2);display:inline-block;font-size:11px;padding:2px 6px}.toast,kbd{font-family:var(--mono)}.toast{animation:toast-in .25s ease;background:var(--text);border-radius:var(--r);bottom:24px;box-shadow:0 4px 20px 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