body { background: var(--grad-page); background-attachment: fixed; min-height: 100vh; margin: 0; color: var(--text-hi); display: flex; flex-direction: column; }
  /* shell grows to fill the viewport so the auto-injected .app-footer (margin-top:auto)
     is pushed to the bottom instead of floating mid-page on short content. */
  .shell { max-width: 1100px; width: 100%; margin: 0 auto; padding: 16px; flex: 1 0 auto; }

  .topbar {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px;
    padding: 10px 16px; display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 24px;
  }
  .topbar .brand { font-weight: 700; font-size: 14px; }
  .topbar .right { display: flex; gap: 8px; }
  .topbar a, .topbar button {
    background: transparent; border: 1px solid var(--border); color: var(--text-md);
    font-size: 11px; padding: 5px 10px; border-radius: 4px;
    font-family: var(--mono); cursor: pointer; text-decoration: none;
  }
  .topbar a:hover, .topbar button:hover { border-color: var(--accent-2); color: var(--accent-2); }

  /* Two-column layout */
  .grid {
    display: grid; grid-template-columns: 1fr 320px; gap: 24px;
    margin-top: 16px;
  }
  @media (max-width: 800px) { .grid { grid-template-columns: 1fr; } }

  .card {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px;
    padding: 28px;
  }
  .h-title {
    font-size: 24px; font-weight: 700; margin: 0 0 6px;
    letter-spacing: -0.02em;
  }
  .h-sub {
    color: var(--text-md); font-size: 13px; line-height: 1.6; margin: 0 0 24px;
  }

  /* Form */
  .form-row { margin-bottom: 16px; }
  .form-row label {
    display: block; font-size: 11px; color: var(--text-md);
    margin-bottom: 6px; font-weight: 700; letter-spacing: 0.3px;
    font-family: var(--mono);
  }
  .form-row input, .form-row textarea, .form-row select {
    width: 100%; box-sizing: border-box;
    background: var(--bg-card2); border: 1px solid var(--border); border-radius: 6px;
    color: var(--text-hi); font-family: inherit; font-size: 13px;
    padding: 10px 12px;
    transition: border-color .15s;
  }
  .form-row input:focus, .form-row textarea:focus, .form-row select:focus {
    outline: none; border-color: var(--accent-2);
  }
  .form-row textarea { resize: vertical; min-height: 120px; }
  .form-row .hint { color: var(--text-lo); font-size: 10px; margin-top: 4px; font-family: var(--mono); }

  .btn-submit {
    background: linear-gradient(135deg, var(--accent-2) 0%, var(--accent) 100%);
    color: #fff; border: 0;
    padding: 12px 24px; border-radius: 6px;
    font-size: 14px; font-weight: 700; cursor: pointer;
    transition: transform .15s, box-shadow .15s;
  }
  .btn-submit:hover { transform: translateY(-1px); box-shadow: 0 8px 24px var(--accent-border); }
  .btn-submit:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

  /* Success/error */
  .alert {
    padding: 10px 14px; border-radius: 6px; font-size: 12px;
    margin-bottom: 16px; font-family: var(--mono);
  }
  .alert.success {
    background: color-mix(in srgb, var(--green) 8%, transparent);
    border: 1px solid color-mix(in srgb, var(--green) 30%, transparent);
    color: var(--green);
  }
  .alert.error {
    background: color-mix(in srgb, var(--red) 8%, transparent);
    border: 1px solid color-mix(in srgb, var(--red) 30%, transparent);
    color: var(--red);
  }

  /* Sidebar contact info */
  .info-card { margin-bottom: 14px; }
  .info-card h3 {
    font-size: 12px; color: var(--accent-2); font-family: var(--mono);
    text-transform: uppercase; letter-spacing: 0.6px; margin: 0 0 12px;
  }
  .info-item {
    display: flex; align-items: center; gap: 10px; padding: 10px 0;
    border-bottom: 1px solid var(--bg-input);
    font-size: 13px;
  }
  .info-item:last-child { border-bottom: 0; }
  .info-item .ico {
    width: 24px; height: 24px; border-radius: 5px; flex-shrink: 0;
    background: var(--accent-dim); color: var(--accent-2);
    display: flex; align-items: center; justify-content: center;
    font-size: 12px;
  }
  .info-item .label { color: var(--text-md); font-size: 10px; font-family: var(--mono); }
  .info-item .value { color: var(--text-hi); font-size: 12px; word-break: break-all; }
  .info-item a { color: var(--text-hi); text-decoration: none; }
  .info-item a:hover { color: var(--accent-2); }

  .response-time {
    background: color-mix(in srgb, var(--green) 4%, transparent);
    border: 1px solid color-mix(in srgb, var(--green) 20%, transparent);
    border-radius: 6px;
    padding: 12px;
    font-size: 11px;
    color: var(--green);
    font-family: var(--mono);
    line-height: 1.5;
    margin-top: 14px;
  }
  .lang-pick { display: flex; gap: 4px; }
  .lang-pick button { background: var(--bg-card); border: 1px solid var(--border); color: var(--text-md); font-size: 10px; font-weight: 700; font-family: var(--mono); padding: 4px 9px; border-radius: 6px; cursor: pointer; }
  .lang-pick button.active { background: var(--accent-dim); border-color: var(--accent-border); color: var(--accent-2); }