:root{--bg-primary:#090d16;--bg-surface:#111827;--bg-surface-hover:#1f2937;--bg-card:#151d2f;--border-subtle:#1e293b;--border-focus:#3b82f6;--text-primary:#f1f5f9;--text-secondary:#94a3b8;--text-muted:#64748b;--accent-blue:#2563eb;--accent-blue-hover:#1d4ed8;--accent-emerald:#10b981;--accent-amber:#f59e0b;--accent-rose:#f43f5e;--code-bg:#0b1120;--code-border:#1e293b;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-xl:24px;--shadow-card:0 10px 30px -5px rgba(0,0,0,0.4),0 0 0 1px rgba(255,255,255,0.05);--shadow-glow:0 0 20px rgba(37,99,235,0.15);--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--font-mono:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-primary);min-height:100vh;line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.container{max-width:860px;margin:0 auto;padding:48px 20px 80px}.header{text-align:center;margin-bottom:40px}.badge{display:inline-flex;align-items:center;gap:6px;background:rgba(37,99,235,.12);border:1px solid rgba(59,130,246,.3);color:#60a5fa;font-size:12px;font-weight:600;padding:4px 12px;border-radius:9999px;letter-spacing:.03em;margin-bottom:16px}.title{font-size:32px;font-weight:700;letter-spacing:-.02em;color:#ffffff;margin-bottom:10px}.subtitle{font-size:15px;color:var(--text-secondary);max-width:580px;margin:0 auto;line-height:1.6}.card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-xl);padding:32px;box-shadow:var(--shadow-card);margin-bottom:32px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.section-title{font-size:16px;font-weight:600;color:var(--text-primary);margin-bottom:16px;display:flex;align-items:center;gap:8px}.form-group{margin-bottom:20px}.label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:8px}.input-row{display:flex;gap:12px}.input{flex:1 1;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:12px 16px;color:var(--text-primary);font-size:14px;outline:none;transition:border-color .2s,box-shadow .2s;font-family:inherit}.input:focus{border-color:var(--border-focus);box-shadow:0 0 0 3px rgba(59,130,246,.2)}.input::placeholder{color:var(--text-muted)}.select{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:12px 16px;color:var(--text-primary);font-size:14px;outline:none;cursor:pointer;min-width:140px}.select:focus{border-color:var(--border-focus)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border-radius:var(--radius-md);font-size:14px;font-weight:500;cursor:pointer;transition:all .15s ease;border:none;text-decoration:none}.btn-primary{background:var(--accent-blue);color:#ffffff}.btn-primary:hover{background:var(--accent-blue-hover);box-shadow:var(--shadow-glow)}.btn-secondary{background:var(--bg-surface);border:1px solid var(--border-subtle);color:var(--text-primary)}.btn-secondary:hover{background:var(--bg-surface-hover);border-color:#334155}.btn-sm{padding:6px 12px;font-size:12px}.sample-tags{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:10px}.sample-tag{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);color:var(--text-secondary);font-size:12px;padding:3px 8px;border-radius:var(--radius-sm);cursor:pointer;transition:all .15s}.sample-tag:hover{background:rgba(255,255,255,.08);color:var(--text-primary);border-color:rgba(255,255,255,.15)}.output-box{margin-top:24px;background:var(--code-bg);border:1px solid var(--code-border);border-radius:var(--radius-md);padding:16px}.output-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.output-label{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted)}.output-url{font-family:var(--font-mono);font-size:13px;color:#38bdf8;word-break:break-all;-webkit-user-select:all;-moz-user-select:all;user-select:all;padding:8px 0}.output-actions{display:flex;gap:8px;margin-top:8px}.jump-banner{background:rgba(16,185,129,.08);border:1px solid rgba(16,185,129,.3);border-radius:var(--radius-lg);padding:24px;text-align:center;margin-bottom:32px}.jump-banner h2{font-size:18px;color:#34d399;margin-bottom:8px}.jump-banner p{font-size:14px;color:var(--text-secondary);margin-bottom:16px}.jump-countdown{font-weight:700;color:#ffffff;font-size:16px}.grid-2{display:grid;grid-template-columns:1fr 1fr;grid-gap:20px;gap:20px}@media (max-width:640px){.grid-2{grid-template-columns:1fr}.input-row{flex-direction:column}.title{font-size:24px}}.info-panel{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:20px}.info-panel h3{font-size:14px;font-weight:600;color:var(--text-primary);margin-bottom:12px;display:flex;align-items:center;gap:6px}.code-block{background:var(--code-bg);border:1px solid var(--code-border);border-radius:var(--radius-sm);padding:12px;font-family:var(--font-mono);font-size:12px;color:#cbd5e1;overflow-x:auto;line-height:1.6}.status-msg{display:flex;align-items:center;gap:6px;font-size:13px;margin-top:8px}.status-valid{color:var(--accent-emerald)}.status-invalid{color:var(--accent-rose)}.footer{text-align:center;font-size:13px;color:var(--text-muted);margin-top:48px;border-top:1px solid var(--border-subtle);padding-top:24px}