:root{--bg:#f4f7fb;--panel:#fff;--ink:#172033;--muted:#6a7891;--primary:#2764e7;--primary2:#6d5dfc;--line:#e5eaf2;--good:#0c9b6f;--warn:#e48d22;--danger:#d84b58;--shadow:0 12px 30px rgba(42,62,100,.10)}
*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial;background:var(--bg);color:var(--ink)}
button,input,select,textarea{font:inherit}button{cursor:pointer}.app{display:grid;grid-template-columns:250px 1fr;min-height:100vh}.side{background:#101a33;color:#fff;padding:22px 16px;position:sticky;top:0;height:100vh}.brand{display:flex;gap:12px;align-items:center;margin-bottom:28px}.brand-mark{width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,#fff,#dbe7ff);display:grid;place-items:center;color:#1f5dd8;font-weight:900}.brand h1{font-size:15px;margin:0}.brand small{color:#9eacd0}.nav a{display:flex;align-items:center;gap:10px;padding:11px 12px;color:#cbd5ef;text-decoration:none;border-radius:10px;margin:4px 0}.nav a:hover,.nav a.active{background:#1c2b50;color:#fff}.main{padding:26px}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.topbar h2{margin:0;font-size:28px}.pill{background:#fff;border:1px solid var(--line);padding:8px 12px;border-radius:999px;color:var(--muted)}.hero{background:linear-gradient(115deg,#255fe3,#735ee7);border-radius:22px;padding:26px;color:#fff;display:grid;grid-template-columns:1.4fr .6fr;gap:18px;box-shadow:var(--shadow)}.hero h3{font-size:30px;margin:0 0 8px}.drop{border:2px dashed rgba(255,255,255,.6);border-radius:18px;padding:20px;text-align:center;background:rgba(255,255,255,.08)}.btn{border:0;border-radius:11px;padding:10px 14px;font-weight:700}.btn.primary{background:#fff;color:#2459cd}.btn.blue{background:var(--primary);color:#fff}.btn.ghost{background:#eef3ff;color:#2459cd}.grid-title{display:flex;justify-content:space-between;align-items:center;margin:26px 0 12px}.grid-title h3{margin:0}.tools{display:grid;grid-template-columns:repeat(4,minmax(150px,1fr));gap:14px}.tool{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:16px;box-shadow:0 5px 16px rgba(42,62,100,.05);transition:.18s}.tool:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.tool .ico{font-size:25px}.tool h4{margin:10px 0 4px}.tool p{font-size:13px;color:var(--muted);margin:0}.panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;margin-top:18px}.workspace{display:grid;grid-template-columns:1fr 340px;gap:18px}.filebox{min-height:300px;border:1px dashed #bdc8db;border-radius:14px;padding:18px}.file-row{display:grid;grid-template-columns:1fr auto auto;gap:10px;align-items:center;padding:10px;border-bottom:1px solid var(--line)}.small{font-size:12px;color:var(--muted)}.status{padding:4px 8px;border-radius:999px;background:#e8f8f2;color:var(--good);font-size:12px}.field{margin-bottom:12px}.field label{display:block;font-size:12px;font-weight:700;margin-bottom:5px}.field input,.field select,.field textarea{width:100%;border:1px solid #ced7e7;border-radius:10px;padding:10px;background:#fff}.progress{height:8px;background:#e9edf5;border-radius:999px;overflow:hidden}.progress span{display:block;height:100%;background:linear-gradient(90deg,#245fe1,#705be4);width:0}.notice{padding:12px;border-radius:12px;background:#fff8e8;color:#79541d;font-size:13px}.result{padding:12px;border-radius:12px;background:#eaf8f3;color:#096f52;margin-top:12px;white-space:pre-wrap}.hidden{display:none!important}.footer{font-size:12px;color:var(--muted);text-align:center;padding:24px}@media(max-width:1000px){.tools{grid-template-columns:repeat(2,1fr)}.workspace{grid-template-columns:1fr}.hero{grid-template-columns:1fr}}@media(max-width:720px){.app{grid-template-columns:1fr}.side{height:auto;position:static}.nav{display:flex;overflow:auto}.nav a{white-space:nowrap}.main{padding:16px}.tools{grid-template-columns:1fr}.topbar h2{font-size:22px}}