/* Echo Proof — Pro v3.1 */
:root{
  --bg:#ffffff; --ink:#111; --muted:#6b7280; --line:#e5e7eb; --card:#ffffff;
  --brand:#111827; --accent:#2563eb; --accent-weak:#eff6ff; --focus:#93c5fd;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);}
.wrap{max-width:1000px;margin:0 auto;padding:0 16px}
.site-header{border-bottom:1px solid var(--line);background:#fafafa}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{font-weight:800;letter-spacing:.3px}
.nav a{color:var(--ink);text-decoration:none;margin-left:16px}
.nav a:hover{color:var(--accent)}
.hero{padding:24px 0 8px 0}
.badges .badge{display:inline-block;background:var(--accent-weak);border:1px solid #dbeafe;color:#1e3a8a;padding:4px 10px;border-radius:999px;margin-right:6px;margin-top:6px;font-size:.9rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;margin:16px 0}
.inner{background:#fcfcfc}
h1{margin:0 0 6px 0}
h2{margin:0 0 12px 0}
h3{margin:0 0 10px 0}
.muted{color:var(--muted)}
.small{font-size:.9rem}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:860px){.grid-2{grid-template-columns:1fr}}
.kv{display:grid;grid-template-columns:120px 1fr;gap:6px;align-items:center}
.kv dt{color:var(--muted)}
.kv dd{margin:0}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
button{padding:10px 14px;border:1px solid var(--line);border-radius:10px;background:#f7f7f7;cursor:pointer}
button:hover{background:#f0f0f0}
button:disabled{opacity:.45;cursor:not-allowed}
.alert{margin-top:10px;border:1px solid #fca5a5;background:#fef2f2;color:#991b1b;border-radius:8px;padding:8px}
.dropzone{position:relative;border:2px dashed #cbd5e1;border-radius:12px;background:#f8fafc;height:160px;display:flex;align-items:center;justify-content:center;cursor:pointer;outline:none}
.dropzone:hover{background:#f1f5f9}
.dropzone.dragover{border-color:var(--accent);box-shadow:0 0 0 3px var(--focus) inset}
.dropzone input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer}
.dz-title{font-weight:700}
.dz-sub{color:var(--muted);margin-top:4px}
.site-footer{border-top:1px solid var(--line);padding:16px 0;margin-top:24px;background:#fafafa}
code{background:#f6f6f6;border:1px solid #eee;border-radius:6px;padding:2px 6px}
textarea{border:1px solid var(--line);border-radius:10px;padding:10px;min-height:120px}
.altlink{font-size:.92rem;color:#1d4ed8;text-decoration:underline}
.mono{font-family: ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace}