:root{--bg: #0f1221;--body-bg: #0b0f1d;--panel: #14182b;--muted: #8b93a7;--txt: #e9ecf1;--brand: #7dd3fc;--brand-2: #60a5fa --ok: #22c55e;--warn: #eab308;--err: #ef4444;--radius: 18px;--gap: 14px}*{box-sizing:border-box}html,body{height:100%}body{font-family:sans-serif;background:linear-gradient(180deg,var(--body-bg),var(--bg) 35%);color:var(--txt)}header{padding:20px;background:linear-gradient(90deg,#60a5fa26,#7dd3fc1a);border-bottom:1px solid rgba(255,255,255,.06)}.container{max-width:1200px;margin-inline:auto;padding:14px;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;font-weight:700}.brand .logo{inline-size:36px;block-size:36px;border-radius:10px}.title{font-size:clamp(18px,2vw,22px)}main{max-width:1516px;margin-inline:auto;padding:18px;display:grid;grid-template-columns:280px 1fr 360px;gap:var(--gap)}@media (max-width: 1100px){main{grid-template-columns:1fr}}.card{background:linear-gradient(180deg,#ffffff0d,#ffffff08);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);box-shadow:0 10px 30px #00000040}.panel{padding:16px}h2,h3{margin:0 0 12px}.muted{color:var(--muted);font-size 13px}.stack{display:flex;flex-direction:column;gap:10px}.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:space-between}.btn{appearance:none;border:none;background:linear-gradient(180deg,var(--brand-2),var(--brand));color:#08111f;font-weight:700;padding:10px 14px;border-radius:12px;cursor:pointer;box-shadow:0 10px 24px #60a5fa59}.btn.secondary{background:transparent;border:1px solid rgba(255,255,255,.15);color:var(--txt);box-shadow:none}.btn.warn{background:linear-gradient(180deg,#f59e0b,#eab308)}.btn.ok{background:linear-gradient(180deg,#34d399,#22c55e)}.btn.err{background:linear-gradient(180deg,#fb7185,#ef4444)}.select,select,.text{background:#ffffff08;border:1px solid rgba(255,255,255,.12);color:var(--txt);padding:10px 12px;border-radius:12px}textarea.text{width:100%;min-height:120px}.tabs{display:flex;gap:8px;flex-wrap:wrap}.tab{padding:8px 12px;border-radius:10px;border:1px solid rgba(255,255,255,.14);background:#ffffff08;cursor:pointer;font-weight:700;color:#fff!important}.tab.active{background:linear-gradient(180deg,#7dd3fc2e,#60a5fa2e);color:#0f0!important}.editor-wrap{position:relative;border:1px solid rgba(255,255,255,.12);border-radius:14px;overflow:hidden;min-height:280px;background:#0b1020}.editor{inline-size:100%;block-size:380px}iframe.preview{inline-size:100%;block-size:380px;border:1px solid rgba(255,255,255,.12);border-radius:14px;background:#fff}.out{background:#0a0e1a;border:1px solid rgba(255,255,255,.12);border-radius:12px;padding:10px;min-height:160px;overflow:auto;white-space:pre-wrap}.badge{font-size:12px;padding:4px 8px;border-radius:10px;background:#ffffff14;border:1px solid rgba(255,255,255,.14)}.kbd{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,Cascadia Code,monospace;background;#0e1324;border:1px solid rgba(255,255,255,.15);border-radius:8px;padding:2px 6px}label{font-size:13px;color:var(--muted)}