:root{
  --navy:#1f2a44; --navy2:#2c3a5e; --accent:#c0392b; --line:#dfe3ea;
  --bg:#f5f6f8; --card:#fff; --ink:#222; --muted:#6b7280; --ok:#1d8a4e;
}
*{box-sizing:border-box}
body{margin:0;font-family:"Hiragino Kaku Gothic ProN","Yu Gothic","Meiryo",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.6}
.hd{background:var(--navy);color:#fff}
.hd-in{max-width:960px;margin:0 auto;padding:12px 16px;display:flex;align-items:baseline;gap:10px}
.hd-logo{font-weight:700;font-size:1.15rem;letter-spacing:.05em}
.hd-sub{font-size:.85rem;opacity:.85}
.wrap{max-width:960px;margin:0 auto;padding:20px 16px 60px}
h1{font-size:1.4rem;margin:.2em 0 .4em}
h2{font-size:1.15rem;margin:.2em 0 .6em}
.lead{color:var(--muted);margin:.2em 0 1.2em}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px;max-width:460px}
.fld{display:block;margin-bottom:14px}
.fld>span{display:block;font-size:.85rem;color:var(--muted);margin-bottom:4px}
.fld input,.fld select,.fld textarea{width:100%;padding:10px 12px;border:1px solid var(--line);
  border-radius:8px;font-size:1rem;font-family:inherit;background:#fff}
.fld textarea{resize:vertical}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.btn{appearance:none;border:1px solid var(--line);background:#fff;color:var(--ink);
  padding:10px 18px;border-radius:8px;font-size:1rem;cursor:pointer;font-family:inherit}
.btn:hover{background:#f0f2f5}
.btn-main{background:var(--navy);color:#fff;border-color:var(--navy)}
.btn-main:hover{background:var(--navy2)}
.btn:disabled{opacity:.5;cursor:default}
.actions{display:flex;gap:12px;margin-top:18px}
.msg{margin-top:10px;font-size:.9rem;min-height:1.2em}
.msg.err{color:var(--accent)}
.warn{background:#fff7e6;border:1px solid #ffe1a8;color:#8a5a00;padding:10px 14px;border-radius:8px;font-size:.9rem}

/* overview */
.ov-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px;margin-bottom:12px}
.ov-item h3{margin:0 0 6px;font-size:1.05rem}
.ov-code{color:var(--muted);font-size:.85rem}
.specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.chip{background:#eef1f6;border-radius:999px;padding:3px 10px;font-size:.82rem;color:var(--navy2)}
.chip-done{background:#e3f3e6;color:#1b7a33}
.chip-todo{background:#fff3e0;color:#b25c00}

/* design */
.dz-top{margin-bottom:14px}
.dz-progress span{font-size:.9rem;color:var(--muted)}
.bar{height:6px;background:#e6e9ee;border-radius:3px;margin-top:6px;overflow:hidden}
#dz-barfill{height:100%;background:var(--navy);width:0;transition:width .2s}
.dz-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.locked{font-size:.82rem;color:var(--muted);background:#f0f2f5;border-radius:8px;padding:6px 10px;display:inline-block}
.nav{display:flex;justify-content:space-between;gap:12px;margin-top:18px}
.dz-preview h3{font-size:.95rem;color:var(--muted);margin:.2em 0 .6em}
.canvas-box{background:#fff;border:1px dashed var(--line);border-radius:10px;
  min-height:140px;display:flex;align-items:center;justify-content:center;padding:14px}
.canvas-box canvas{max-width:100%;height:auto;box-shadow:0 1px 4px rgba(0,0,0,.12)}
.hint{font-size:.78rem;color:var(--muted)}

/* review */
.rv-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px}
.rv-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px;text-align:center}
.rv-card .cap{font-size:.82rem;color:var(--muted);margin-bottom:6px}
.rv-card img{max-width:100%;height:auto;border:1px solid #eee}

/* done */
.done-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:30px;text-align:center;max-width:520px;margin:20px auto}
.done-mark{width:56px;height:56px;border-radius:50%;background:var(--ok);color:#fff;font-size:1.8rem;
  display:flex;align-items:center;justify-content:center;margin:0 auto 12px}
.dn-list{list-style:none;padding:0;margin:14px 0 0;text-align:left;display:inline-block}
.dn-list li{font-size:.9rem;color:var(--muted)}
.ft{text-align:center;color:var(--muted);font-size:.8rem;padding:20px}

@media(max-width:680px){
  .dz-grid{grid-template-columns:1fr}
  .row2{grid-template-columns:1fr}
}