:root {
        --main: #36ba7c;
        --main-dark: #219f65;
        --bg: #f6faf7;
      }
      body {
        background: var(--bg);
        margin: 0;
        font-family: "Segoe UI", Arial, sans-serif;
        color: #244;
      }
      .container {
        max-width: 410px;
        margin: 38px auto 0 auto;
        background: #fff;
        border-radius: 18px;
        box-shadow: 0 4px 22px #36ba7c24;
        padding: 30px 16px 20px 16px;
      }
      .logo {
        font-size: 1.21em;
        font-weight: bold;
        text-align: center;
        color: var(--main-dark);
        margin-bottom: 7px;
      }
      .desc {
        text-align: center;
        color: #1a8751;
        font-size: 0.77em;
        margin-bottom: 14px;
      }
      textarea {
        width: 100%;
        min-height: 210px;
        font-size: 1.11em;
        border: 1.4px solid #97e7c7;
        border-radius: 10px;
        padding: 13px;
        background: #fafdff;
        color: #244;
        resize: vertical;
        margin-bottom: 14px;
        font-family: "Fira Mono", "Menlo", monospace;
        transition: border 0.18s;
      }
      textarea:focus {
        border-color: var(--main);
      }
      .action-row {
        display: flex;
        gap: 8px;
        justify-content: flex-end;
        margin-bottom: 10px;
      }
      .mini-btn {
        background: #e7f8f2;
        color: #1b8055;
        border: none;
        border-radius: 7px;
        font-size: 1em;
        padding: 7px 16px;
        cursor: pointer;
        transition: background 0.12s;
        font-weight: 500;
      }
      .mini-btn:active {
        background: #bff2da;
      }
      .footer {
        color: #789;
        text-align: center;
        font-size: 0.95em;
        margin-top: 18px;
        opacity: 0.9;
      }
      #backBtn {
        position: fixed;
        left: 50%;
        bottom: 32px;
        transform: translateX(-50%);
        background: #36ba7c;
        color: #fff;
        font-weight: 700;
        border: none;
        border-radius: 2rem;
        padding: 0.58em 1.5em;
        box-shadow: 0 4px 16px #36ba7c33;
        font-size: 1.09em;
        text-decoration: none;
        cursor: pointer;
        letter-spacing: 0.01em;
        transition:
          background 0.15s,
          transform 0.12s;
        z-index: 2000;
      }
      #backBtn:hover {
        background: #219f65;
        transform: translateX(-50%) scale(1.04);
      }
      @media (max-width: 600px) {
        .container {
          max-width: 99vw;
          padding: 13px 2vw 11px 2vw;
        }
        textarea {
          font-size: 1em;
        }
        #backBtn {
          bottom: 18px;
          font-size: 0.98em;
          padding: 0.48em 1em;
        }
      }
      .autosave {
        color: #4eb983;
        font-size: 0.98em;
        margin-bottom: 6px;
        min-height: 18px;
        text-align: right;
        opacity: 0.78;
      }