*{margin:0;padding:0;box-sizing:border-box}:root{--ink: #1a1a1a;--ink-soft: #4a4a4a;--ink-faint: #888;--line: #e0e0e0;--surface: #ffffff;--sunken: #fafafa;--warn: #8a5a00;--warn-bg: #fff8e6;--error: #a11b1b;--error-bg: #fdecec}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--sunken);color:var(--ink);min-height:100vh;padding:20px;font-size:14px;line-height:1.5}:focus-visible{outline:2px solid var(--ink);outline-offset:2px}.page-header{max-width:860px;margin:0 auto 24px;display:flex;align-items:center;gap:20px}.page-header h1{font-size:22px;font-weight:600}.back-button{background:var(--ink);color:#fff;padding:8px 16px;border-radius:6px;text-decoration:none;white-space:nowrap;transition:background .2s ease}.back-button:hover{background:#333}.layout{max-width:860px;margin:0 auto;display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,340px);gap:20px;align-items:start}.column{display:flex;flex-direction:column;gap:16px;min-width:0}.card{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:20px;display:flex;flex-direction:column;gap:16px}.card h2{font-size:13px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-faint)}.field{display:flex;flex-direction:column;gap:6px}.field label,.field-label{font-weight:600}input[type=text],input[type=password],select{width:100%;padding:9px 10px;border:1px solid var(--line);border-radius:6px;background:var(--surface);color:var(--ink);font:inherit}input[type=text]:focus,input[type=password]:focus,select:focus{border-color:var(--ink);outline:none}.input-row{display:flex;gap:8px}.input-row button{flex:0 0 auto;white-space:nowrap}.hint{color:var(--ink-faint);font-size:12px}.segmented{display:flex;border:1px solid var(--line);border-radius:6px;overflow:hidden}.segmented button{flex:1;padding:9px 8px;border:none;border-right:1px solid var(--line);background:var(--surface);color:var(--ink-soft);font:inherit;cursor:pointer}.segmented button:last-child{border-right:none}.segmented button.is-active{background:var(--ink);color:#fff}.checkbox{display:flex;align-items:center;gap:8px;cursor:pointer}button{font:inherit;cursor:pointer}.actions{display:flex;gap:8px}.actions button{flex:1;padding:9px 12px;border:1px solid var(--ink);border-radius:6px;background:var(--ink);color:#fff;white-space:nowrap}.actions button:hover:not(:disabled){background:#333}button.ghost{background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:6px;padding:9px 12px}button.ghost:hover:not(:disabled){background:var(--sunken)}button:disabled{opacity:.4;cursor:not-allowed}.qr{display:flex;align-items:center;justify-content:center;min-height:240px;padding:12px;border:1px solid var(--line);border-radius:8px;background:#fff}.qr-image{width:100%;max-width:260px}.qr-image svg{display:block;width:100%;height:auto}.qr-placeholder{color:var(--ink-faint);text-align:center;font-size:13px}.payload{display:block;padding:10px;border-radius:6px;background:var(--sunken);border:1px solid var(--line);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;color:var(--ink-soft);word-break:break-all}.issues{list-style:none;display:flex;flex-direction:column;gap:8px}.issue{padding:10px 12px;border-radius:6px;font-size:13px}.issue--error{background:var(--error-bg);color:var(--error)}.issue--warning{background:var(--warn-bg);color:var(--warn)}.notice{color:var(--ink-faint);font-size:12px}@media (max-width: 720px){.layout{grid-template-columns:minmax(0,1fr)}.segmented{flex-direction:column}.segmented button{border-right:none;border-bottom:1px solid var(--line)}.segmented button:last-child{border-bottom:none}}