:root{--bg: #f6f8fb;--surface: #ffffff;--text: #0f172a;--muted: #64748b;--border: #e5e7eb;--border-strong: #d1d5db;--focus: #93c5fd;--primary: #2563eb}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:linear-gradient(180deg,#f8fafc,var(--bg));color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica Neue,Arial;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app-container{max-width:980px;margin:2.2rem auto;padding:0 18px}.page-header{display:none}.hero{background:linear-gradient(135deg,#eef5ff,#fff);border:1px solid var(--border);border-radius:14px;padding:24px 22px;box-shadow:0 6px 20px #0206170f;margin:0 0 18px}.page-title{margin:0 0 8px;font-size:32px;font-weight:800;letter-spacing:-.02em;line-height:1.2}.lead{margin:0 0 14px;color:#334155;line-height:1.6}.badges{display:flex;gap:8px;flex-wrap:wrap}.badge{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;font-size:12px;font-weight:600;color:#1e293b;background:#e8f0ff;border:1px solid #dbe7ff;border-radius:999px}.card{background:var(--surface);border:1px solid var(--border);border-radius:12px;box-shadow:0 8px 24px #0206170f}.card-body{padding:22px}.tabs{display:flex;border-bottom:1px solid var(--border);padding:0 12px;gap:8px}.tab{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:transparent;border:none;padding:12px 10px;margin:0;font:inherit;color:var(--muted);border-bottom:2px solid transparent;cursor:pointer}.tab[aria-selected=true]{color:var(--primary);border-color:var(--primary)}.form-grid{display:grid;grid-template-columns:2fr 1fr;gap:20px}@media (max-width: 860px){.form-grid{grid-template-columns:1fr}}.field{display:flex;flex-direction:column}.label{font-weight:600;margin-bottom:6px}.input,.textarea{width:100%;border:1px solid var(--border-strong);background:#fff;color:var(--text);border-radius:10px;transition:box-shadow .12s ease,border-color .12s ease,background .12s ease}.input{height:42px;padding:0 12px}.textarea{min-height:180px;padding:10px 12px;resize:vertical}.input:focus,.textarea:focus,.dropzone:focus-within{outline:none;border-color:var(--focus);box-shadow:0 0 0 4px #2563eb1f}.dropzone{display:flex;align-items:center;justify-content:center;padding:26px;border:1.5px dashed var(--border-strong);border-radius:12px;background:#f8fbff;color:var(--muted);text-align:center;cursor:pointer;transition:background .16s ease,border-color .16s ease}.dropzone:hover{background:#f1f5ff}.dropzone strong{color:var(--text)}.hint{font-size:12px;color:var(--muted);margin-top:6px}.btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid var(--primary);background:var(--primary);color:#fff;height:42px;padding:0 18px;border-radius:10px;font-weight:700;letter-spacing:.01em;cursor:pointer;transition:transform 50ms ease,filter .12s ease,box-shadow .12s ease;box-shadow:0 6px 16px #2563eb38}.btn:hover{filter:brightness(1.05)}.btn:disabled{opacity:.6;cursor:default;box-shadow:none}.btn:not(:disabled):active{transform:translateY(1px)}.btn-secondary{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid var(--border-strong);background:#fff;color:var(--text);height:36px;padding:0 12px;border-radius:8px;font-weight:600;cursor:pointer}.error{margin-top:12px;color:#b91c1c}.result{margin-top:20px}.result-header,.result-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 10px}.seg-group{display:inline-flex;background:#eef3ff;border:1px solid #dbe7ff;border-radius:999px;padding:3px}.seg{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:transparent;border:none;color:#1e293b;font-weight:600;padding:6px 10px;border-radius:999px;cursor:pointer}.seg-active{background:#fff;box-shadow:0 1px 2px #0206170f}.result-actions{display:inline-flex;gap:8px}.result-card{background:linear-gradient(180deg,#f7faff,#fff);border:1px solid #dbe7ff;border-left:4px solid var(--primary);border-radius:12px;padding:16px 16px 14px;box-shadow:0 8px 20px #0206170f}.result-card h3{margin:10px 0 8px;font-size:16px;line-height:1.4}.result-card p{margin:6px 0 10px;line-height:1.7}.result-card ul{margin:6px 0 12px 1.2em;padding:0}.result-card li{margin:4px 0}.result pre{margin:0;white-space:pre-wrap;word-break:break-word;padding:16px;background:#fbfdff;color:var(--text);border-radius:12px;border:1px solid var(--border);box-shadow:0 2px 10px #0206170a;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,monospace;font-size:14px;line-height:1.6;max-height:480px;overflow:auto}.result-edit{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,monospace;font-size:14px;background:#f9fbff;min-height:180px;overflow:hidden;resize:none}.footer{margin:22px 0 0;color:var(--muted);font-size:12px;text-align:center}