:root{
  --bg:#f5f3ee;
  --panel:#ffffff;
  --text:#172019;
  --muted:#667067;
  --line:#dfe4df;
  --accent:#0d5c46;
  --accent-dark:#083e30;
  --danger:#a12b2b;
  --radius:18px;
  --shadow:0 18px 50px rgba(23,32,25,.10);
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
}
button,input,textarea,select{font:inherit}
button{
  border:0;border-radius:12px;padding:14px 20px;
  background:var(--accent);color:#fff;font-weight:700;cursor:pointer;
}
button:hover{background:var(--accent-dark)}
button:disabled{opacity:.55;cursor:not-allowed}
.secondary{background:#eef2ef;color:var(--text);border:1px solid var(--line)}
.secondary:hover{background:#e4eae6}
.small{padding:9px 14px}
.login-page{min-height:100vh;display:grid;place-items:center;padding:24px}
.auth-card,.panel{
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow);
}
.auth-card{width:min(460px,100%);padding:40px}
.brand-mark{
  width:58px;height:58px;border-radius:16px;display:grid;place-items:center;
  background:var(--accent);color:#fff;font-weight:900;margin-bottom:24px;
}
.eyebrow{letter-spacing:.14em;font-size:.78rem;font-weight:800;color:var(--accent);margin:0 0 6px}
h1,h2{line-height:1.3;margin-top:0}
.lead,.muted{color:var(--muted)}
.stack{display:grid;gap:12px;margin-top:28px}
input,textarea,select{
  width:100%;border:1px solid #ccd4ce;border-radius:11px;
  padding:13px 14px;background:#fff;color:var(--text);
}
textarea{min-height:110px;resize:vertical}
input:focus,textarea:focus,select:focus{
  outline:3px solid rgba(13,92,70,.14);border-color:var(--accent);
}
.message{min-height:1.6em;margin:4px 0 0;color:var(--muted)}
.message.error{color:var(--danger)}
.site-header{
  max-width:1200px;margin:0 auto;padding:30px 24px 12px;
  display:flex;justify-content:space-between;gap:20px;align-items:center;
}
.site-header h1{margin:0}
.layout{max-width:1200px;margin:0 auto;padding:20px 24px 60px;display:grid;gap:24px}
.panel{padding:30px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.form-grid label{display:grid;gap:7px;font-weight:700}
.form-grid .full{grid-column:1/-1}
.result-header{display:flex;justify-content:space-between;gap:16px;align-items:center}
.actions{display:flex;gap:10px;flex-wrap:wrap}
pre{
  white-space:pre-wrap;word-break:break-word;
  background:#f7f8f6;border:1px solid var(--line);border-radius:14px;
  padding:22px;max-height:none;font-family:inherit;line-height:1.8;
}
@media(max-width:760px){
  .auth-card{padding:28px 22px}
  .site-header{align-items:flex-start}
  .site-header h1{font-size:1.45rem}
  .panel{padding:22px}
  .form-grid{grid-template-columns:1fr}
  .result-header{align-items:flex-start;flex-direction:column}
}