.logo {
      text-align: center;
      margin-bottom: 24px;
    }
    .logo img {
      max-width: 220px;
      height: auto;
      display: inline-block;
      filter: drop-shadow(0 0 8px rgba(201,162,39,0.35));
    }
    *, *::before, *::after { box-sizing: border-box; }
    html, body { 
      height: 100%; 
      margin: 0;
      padding: 0;
    }
    body {
      font-family: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
      background: #0d0d0d;
      color: #f5f5f5;
      display: flex;
      justify-content: center;
      align-items: center;
      padding: 16px;
      min-height: 100vh;
    }

    .wrap {
      width: 100%;
      max-width: 1000px;
      background: #1a1a1a;
      border-radius: 20px;
      overflow: hidden;
      box-shadow: 0 0 28px rgba(201,162,39,0.22);
      display: grid;
      grid-template-columns: 1fr 1fr;
      border: 1px solid #2a2a2a;
    }

    .left {
      background: linear-gradient(135deg, #121212 0%, #1f1f1f 100%);
      padding: 32px 28px 36px;
      color: #c9a227; 
      display: flex;
      flex-direction: column;
    }
    .left .title {
      font-size: clamp(1.3rem, 2.4vw, 1.9rem);
      font-weight: 800;
      letter-spacing: 0.3px;
      color: #c9a227;
      margin: 0;
      line-height: 1.3;
    }
    .left .title-divider {
      width: 72px;
      height: 3px;
      background: linear-gradient(90deg, #c9a227, #a8821b);
      border-radius: 999px;
      margin: 12px 0 22px;
    }
    .left .content {
      margin-top: 6px;
      color: #d9d9d9;
      line-height: 1.6;
    }
    .left .content p {
      margin: 0 0 20px;
      color: #cfcfcf;
      font-size: 0.95rem;
    }
    .stats {
      display: grid;
      gap: 12px;
      margin-top: 10px;
    }
    .stat {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.95rem;
      color: #e7e7e7;
    }
    .stat i {
      color: #c9a227;
      font-size: 1.1rem;
      filter: drop-shadow(0 0 6px rgba(201,162,39,0.25));
      min-width: 20px;
    }
    .stat strong {
      color: #c9a227;
      font-weight: 700;
      margin-left: 4px;
    }

    .right {
      background: #0d0d0d;
      padding: 32px 28px 36px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .right h3 {
      margin: 0 0 16px;
      color: #c9a227;
      font-size: 1.3rem;
      font-weight: 800;
      letter-spacing: 0.3px;
    }
    .error-box {
      display: none; 
      background: rgba(255, 0, 0, 0.10);
      border: 1px solid #ff4d4d;
      color: #ff7373;
      padding: 10px 12px;
      border-radius: 8px;
      margin-bottom: 16px;
      font-size: 0.9rem;
      line-height: 1.4;
    }
    form {
      display: grid;
      gap: 14px;
    }
    .form-row {
      display: grid;
      gap: 6px;
    }
    label {
      font-size: 0.9rem;
      color: #cfcfcf;
    }
    .control {
      width: 100%;
      padding: 12px;
      border-radius: 10px;
      border: 1px solid #333;
      background: #161616;
      color: #f5f5f5;
      font-size: 0.95rem;
      outline: none;
      transition: border-color .2s, box-shadow .2s, background .2s;
    }
    .control::placeholder { color: #9a9a9a; }
    .control:focus {
      border-color: #c9a227;
      box-shadow: 0 0 0 3px rgba(201,162,39,0.18);
      background: #171717;
    }

    .captcha-row {
      display: grid;
      grid-template-columns: auto 1fr auto;
      align-items: center;
      gap: 10px;
    }
    .captcha-img {
      display: block;
      height: 44px;
      width: 140px;
      border-radius: 8px;
      border: 1px solid #333;
      background: #111;
      object-fit: cover;
      user-select: none;
      cursor: pointer;
    }
    .refresh-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 44px;
      width: 44px;
      border-radius: 8px;
      border: 1px solid #333;
      background: #161616;
      color: #c9a227;
      cursor: pointer;
      transition: transform .15s ease, border-color .2s, background .2s;
    }
    .refresh-btn:hover {
      transform: rotate(-20deg);
      border-color: #c9a227;
      background: #141414;
    }

    .btn-submit {
      margin-top: 6px;
      height: 46px;
      border: none;
      border-radius: 10px;
      background: linear-gradient(180deg, #c9a227, #a8821b);
      color: #111;
      font-weight: 800;
      letter-spacing: .3px;
      font-size: 0.95rem;
      cursor: pointer;
      transition: transform .12s ease, box-shadow .2s ease, filter .2s ease;
      box-shadow: 0 6px 18px rgba(201,162,39,0.25);
    }
    .btn-submit:hover {
      transform: translateY(-1px);
      filter: brightness(1.02);
      box-shadow: 0 10px 24px rgba(201,162,39,0.32);
    }
    .btn-submit:active {
      transform: translateY(0);
      box-shadow: 0 4px 14px rgba(201,162,39,0.22);
    }

    .footnote {
      margin-top: 12px;
      font-size: 0.85rem;
      color: #acacac;
      text-align: center;
    }
    .footnote a {
      color: #c9a227;
      text-decoration: none;
    }
    .footnote a:hover {
      text-decoration: underline;
    }

    @media (max-width: 900px) {
      .wrap {
        grid-template-columns: 1fr;
        max-width: 600px;
      }
      .left, .right {
        padding: 28px 24px;
      }
      .left {
        order: 2;
      }
      .right {
        order: 1;
      }
    }

    @media (max-width: 600px) {
      body {
        padding: 12px;
        display: block;
        min-height: 100vh;
        height: auto;
      }
      
      .wrap {
        border-radius: 16px;
        margin: 10px 0;
      }
      
      .left, .right {
        padding: 24px 20px;
      }
      
      .captcha-row {
        grid-template-columns: 1fr;
        grid-template-areas:
          "img"
          "input"
          "refresh";
        gap: 8px;
      }
      
      .captcha-img {
        width: 100%;
        grid-area: img;
      }
      
      #captcha_input {
        grid-area: input;
      }
      
      .refresh-btn {
        width: 100%;
        grid-area: refresh;
      }
      
      .stats {
        grid-template-columns: 1fr;
      }
      
      .left .content p {
        font-size: 0.9rem;
      }
      
      .stat {
        font-size: 0.9rem;
      }
    }

    @media (max-width: 360px) {
      .left, .right {
        padding: 20px 16px;
      }
      
      .left .title {
        font-size: 1.2rem;
      }
      
      .right h3 {
        font-size: 1.2rem;
      }
      
      .control {
        padding: 10px;
      }
    }