:root{
  /* EDOO 红白主题：主色取自官网 LOGO (#E7161A 系) */
  --red:#d0021b;
  --red-dark:#a50116;
  --red-light:#fdedee;
  --red-line:#f3d3d7;
  --ink:#1f2328;
  --muted:#6b7280;
  --bg:#fff7f8;
  --card:#ffffff;
  --ok:#1e7e34;
  --err:#c0392b;
  --radius:10px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:"Segoe UI","Microsoft YaHei","PingFang SC",system-ui,sans-serif;
  color:var(--ink); background:var(--bg); line-height:1.55;
}
a{color:var(--red-dark)}
/* top bar */
.topbar{background:linear-gradient(100deg,#8f0b1c,#d0021b 62%,#e8354a);color:#fff;box-shadow:0 2px 10px rgba(165,1,22,.22)}
.topbar-inner{max-width:1280px;margin:0 auto;padding:12px 20px;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:14px;min-width:0}
.brand-logo-box{
  display:inline-flex;align-items:center;justify-content:center;
  background:#fff;border-radius:10px;padding:6px 10px;
  box-shadow:0 2px 10px rgba(0,0,0,.18);text-decoration:none;flex:none;
}
.brand-logo-box img{display:block;height:30px;width:auto}
.brand-text{min-width:0}
.brand-text h1{margin:0;font-size:22px;font-weight:600;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-text p{margin:2px 0 0;font-size:12.5px;color:rgba(255,255,255,.9)}
.brand-text p a{color:#fff;text-decoration:underline}
.topnav{display:flex;gap:8px;flex:none}
.topnav a{color:#fff;text-decoration:none;font-size:13px;border:1px solid rgba(255,255,255,.5);padding:5px 14px;border-radius:999px}
.topnav a:hover{background:rgba(255,255,255,.16)}
.topnav a.active{background:#fff;color:var(--red);font-weight:600;border-color:#fff}
.topnav a.home-link{background:#fff;color:var(--red);border-color:#fff;font-weight:600}
.topnav a.home-link:hover{background:var(--red-light);color:var(--red-dark)}
/* layout */
.layout{max-width:1280px;margin:18px auto;padding:0 20px;display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:18px;align-items:start}
@media (max-width:980px){.layout{grid-template-columns:1fr}}
@media (max-width:620px){.brand-text h1{font-size:18px;white-space:normal}.brand-logo-box img{height:24px}}
.panel{display:flex;flex-direction:column;gap:16px}
.card{background:var(--card);border:1px solid var(--red-line);border-radius:var(--radius);padding:16px 18px;box-shadow:0 1px 4px rgba(165,1,22,.07)}
.card h2{display:flex;align-items:center;gap:8px;margin:0 0 12px;font-size:16px;color:var(--ink)}
.stepno{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:50%;background:var(--red);color:#fff;font-size:13px;flex:none}
.card h3{margin:14px 0 8px;font-size:13.5px;color:var(--red-dark)}
.hint{font-size:12.5px;color:var(--muted);margin:8px 0 0}
/* type buttons */
.type-caption{font-size:12px;color:var(--muted);margin:10px 0 6px}
.type-btns{display:flex;flex-wrap:wrap;gap:8px}
.type-btns button{
  border:1px solid var(--red-line);background:#fff;color:var(--ink);
  padding:7px 13px;border-radius:8px;cursor:pointer;font-size:13px;font-family:inherit;
}
.type-btns button:hover{border-color:var(--red);color:var(--red)}
.type-btns button.active{background:var(--red);border-color:var(--red);color:#fff}
/* form */
.lbl{display:flex;justify-content:space-between;font-size:13px;color:var(--muted);margin-bottom:5px}
.lbl span:first-child{color:var(--ink)}
textarea,input[type=text],input[type=number],select{
  width:100%;border:1px solid var(--red-line);border-radius:8px;padding:8px 10px;
  font-size:14px;font-family:inherit;background:#fff;color:var(--ink);
}
textarea:focus,input:focus,select:focus{outline:none;border-color:var(--red);box-shadow:0 0 0 3px rgba(208,2,27,.13)}
textarea{resize:vertical;min-height:64px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:12px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:10px}
@media (max-width:760px){.grid2,.grid3{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:4px;font-size:12.5px;color:var(--muted)}
.field input[type=color]{padding:2px;height:38px;cursor:pointer}
.field.chk{flex-direction:row;align-items:center;gap:8px;padding-top:16px;color:var(--ink)}
.field.chk input{width:auto}
.note{font-size:12.5px;color:var(--muted);background:var(--red-light);border:1px dashed var(--red-line);border-radius:8px;padding:7px 10px;margin-top:10px}
.note code{background:#fff;border:1px solid var(--red-line);color:var(--red-dark);padding:1px 5px;border-radius:5px}
.subcard{background:#fffafa;border:1px solid var(--red-line);border-radius:8px;padding:2px 12px 12px;margin-top:12px}
.hidden{display:none!important}
/* buttons */
.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.btn{
  border:1px solid var(--red-line);background:#fff;color:var(--ink);
  padding:8px 16px;border-radius:8px;cursor:pointer;font-size:13.5px;font-family:inherit;
}
.btn:hover{border-color:var(--red);color:var(--red)}
.btn.primary{background:var(--red);border-color:var(--red);color:#fff;font-weight:600}
.btn.primary:hover{background:var(--red-dark);border-color:var(--red-dark);color:#fff}
/* status */
.status{font-size:13px;padding:4px 2px;min-height:20px}
.status.ok{color:var(--ok)}
.status.err{color:var(--err);white-space:pre-wrap}
/* result */
.result-card{display:flex;flex-direction:column}
.syminfo{font-size:12px;color:var(--muted);font-weight:400;margin-left:auto}
.canvas-wrap{
  background:
    repeating-conic-gradient(#fdf0f1 0% 25%, #fff 0% 50%) 0 0/22px 22px;
  border:1px solid var(--red-line);border-radius:8px;
  display:flex;justify-content:center;align-items:center;
  min-height:220px;padding:14px;overflow:auto;
}
.canvas-wrap canvas{max-width:100%;height:auto;image-rendering:pixelated;background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.15)}
.center{text-align:center}
/* footer */
.footer{max-width:1240px;margin:10px auto 26px;padding:0 20px;font-size:12px;color:var(--muted);text-align:center}
.footer a{color:var(--red-dark)}

/* ---- print ---- */
@media print {
  body{background:#fff}
  .topbar,.topnav,.footer,.card:not(.result-card){display:none!important}
  .layout{display:block;margin:0;padding:0;max-width:none}
  .panel{display:block}
  .card.result-card{border:none;box-shadow:none;padding:0}
  .canvas-wrap{border:none;min-height:0;padding:0;background:#fff}
  .canvas-wrap canvas{max-width:none;box-shadow:none}
  .result-card h2,.note.center{display:none}
}