:root{--bg:#f6f7f9;--panel:#fff;--border:#dfe3e8;--text:#1c2530;--muted:#66707c;--accent:#2b5bd7;--danger:#c0392b;--ok:#1f8a53;--warn:#b8770a}*{box-sizing:border-box}body,html{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:15px;line-height:1.5;display:flex;flex-direction:column}.header{flex:0 0 auto;background:var(--panel);border-bottom:1px solid var(--border);padding:20px 32px;position:-webkit-sticky;position:sticky;top:0;z-index:10}.header h1{margin:0;font-size:20px}.header p{margin:4px 0 0;color:var(--muted);font-size:13px}.container{max-width:1100px;width:100%;margin:0 auto;padding:24px;display:grid;grid-gap:24px;gap:24px;flex:1 1 auto;min-height:0;overflow-y:auto}.panel{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:20px}.panel h2{margin:0 0 14px;font-size:16px}label{display:block;font-size:13px;font-weight:600;margin-bottom:6px}input[type=file],input[type=password],input[type=text],select{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:6px;font-size:14px;background:#fff}.row{display:flex;gap:16px;flex-wrap:wrap;align-items:flex-end}.row>div{flex:1 1 240px}button{padding:8px 16px;border-radius:6px;border:1px solid var(--accent);background:var(--accent);color:#fff;font-size:14px;cursor:pointer}button:disabled{opacity:.55;cursor:not-allowed}button.secondary{background:#fff;color:var(--text);border-color:var(--border)}button.link{background:none;border:none;color:var(--danger);padding:0;font-size:13px;text-decoration:underline}button.link.neutral{color:var(--accent)}button.danger{background:var(--danger);border-color:var(--danger)}.modal-overlay{position:fixed;inset:0;background:rgba(15,20,26,.45);display:flex;align-items:center;justify-content:center;z-index:100}.modal{background:var(--panel);border-radius:8px;padding:24px;max-width:420px;width:calc(100% - 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