* { box-sizing: border-box; }
body { margin: 0; font-family: Arial, sans-serif; background: #f6f7f9; color: #1f2933; }
.topbar { display: flex; justify-content: space-between; align-items: center; padding: 18px 22px; background: #fff; border-bottom: 1px solid #d9dee5; }
h1, h2, h3, p { margin: 0; }
.topbar p { margin-top: 4px; color: #64748b; }
.topbar a { color: #0f766e; text-decoration: none; font-weight: 700; }
.lead-list { max-width: 900px; margin: 0 auto; padding: 18px; display: grid; gap: 14px; }
.lead, .empty, .login-box { background: #fff; border: 1px solid #d9dee5; border-radius: 8px; padding: 16px; }
.lead-main { display: flex; justify-content: space-between; gap: 14px; align-items: center; }
.lead-main p { margin-top: 5px; color: #64748b; }
.dial, button { border: 0; border-radius: 6px; background: #0f766e; color: #fff; padding: 10px 14px; text-decoration: none; font-weight: 700; cursor: pointer; white-space: nowrap; }
.brief { margin-top: 14px; padding-top: 12px; border-top: 1px solid #edf0f3; }
.brief p { margin-top: 6px; color: #475569; }
.brief ul { padding-left: 18px; margin-bottom: 0; }
.history { margin-top: 12px; border-top: 1px solid #edf0f3; padding-top: 12px; }
.history summary { cursor: pointer; font-weight: 700; color: #0f766e; }
.history-item { padding: 10px 0; border-bottom: 1px solid #edf0f3; }
.history-item h4 { margin: 0 0 6px; font-size: 14px; }
.history-item p { margin: 0 0 6px; color: #475569; }
.history-item ul { margin: 0; padding-left: 18px; }
.muted { color: #64748b; }
.login-page { min-height: 100vh; display: grid; place-items: center; padding: 18px; }
.login-box { width: min(380px, 100%); display: grid; gap: 12px; }
.login-box label { display: grid; gap: 6px; font-weight: 700; }
.login-box input { width: 100%; padding: 10px; border: 1px solid #cbd5e1; border-radius: 6px; }
.error { color: #b91c1c; }
@media (max-width: 640px) {
  .lead-main { align-items: stretch; flex-direction: column; }
  .dial { text-align: center; }
}