:root {
      font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
      color: #1d1d1f;
      background: #f5f5f7;
      font-synthesis: none;
      -webkit-text-size-adjust: 100%;
      --safe-top: env(safe-area-inset-top, 0px);
      --safe-right: env(safe-area-inset-right, 0px);
      --safe-bottom: env(safe-area-inset-bottom, 0px);
      --safe-left: env(safe-area-inset-left, 0px);
    }

    * {
      box-sizing: border-box;
    }

    html,
    body {
      margin: 0;
      width: 100%;
      min-height: 100%;
    }

    body {
      min-height: 100dvh;
      background: linear-gradient(180deg, #fbfbfd 0%, #f1f2f5 100%);
      overscroll-behavior: none;
    }

    button,
    input {
      font: inherit;
    }

    button {
      cursor: pointer;
      touch-action: manipulation;
      -webkit-tap-highlight-color: transparent;
    }

    input {
      -webkit-appearance: none;
      appearance: none;
    }

    .shell {
      width: min(430px, calc(100% - 28px));
      min-height: 100dvh;
      margin: 0 auto;
      display: grid;
      place-items: center;
      padding: max(28px, calc(var(--safe-top) + 18px)) var(--safe-right) max(28px, calc(var(--safe-bottom) + 18px)) var(--safe-left);
    }

    .card {
      width: 100%;
      padding: 34px;
      background: rgba(255, 255, 255, .9);
      -webkit-backdrop-filter: blur(24px);
      backdrop-filter: blur(24px);
      border: 1px solid rgba(0, 0, 0, .06);
      box-shadow: 0 18px 60px rgba(0, 0, 0, .08);
      border-radius: 28px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 30px;
    }

    .brand-icon {
      width: 54px;
      height: 54px;
      flex: 0 0 auto;
      display: grid;
      place-items: center;
      border-radius: 16px;
      background: #07c160;
      color: white;
      font-size: 29px;
      font-weight: 700;
    }

    h1 {
      margin: 0;
      font-size: 27px;
      letter-spacing: -.5px;
    }

    .brand p {
      margin: 5px 0 0;
      color: #777;
    }

    label {
      display: block;
      margin-bottom: 8px;
      color: #555;
      font-size: 13px;
      font-weight: 600;
    }

    input {
      width: 100%;
      height: 52px;
      border: 1px solid #ddd;
      background: #fafafa;
      border-radius: 14px;
      padding: 0 16px;
      outline: none;
      font-size: 16px;
    }

    input:focus {
      border-color: #07c160;
      box-shadow: 0 0 0 3px rgba(7, 193, 96, .12);
    }

    button {
      width: 100%;
      min-height: 52px;
      margin-top: 14px;
      border: 0;
      border-radius: 14px;
      background: #07c160;
      color: #fff;
      font-weight: 650;
    }

    button:hover {
      background: #06ad56;
    }

    button:active {
      transform: scale(.985);
    }

    button:disabled {
      opacity: .55;
      cursor: default;
    }

    .captcha-row {
      display: flex;
      gap: 10px;
      align-items: center;
    }

    .captcha-row input {
      flex: 1;
      min-width: 0;
      padding: 0 12px;
    }

    #refreshCaptcha {
      flex: 0 0 116px;
      width: 116px;
      height: 52px;
      min-height: 52px;
      margin: 0;
      padding: 0;
      overflow: hidden;
      background: #edf4ef;
      border: 1px solid #d9e4dc;
      border-radius: 12px;
    }

    #captchaImage {
      display: block;
      width: 100%;
      height: 100%;
      object-fit: contain;
    }

    .message {
      min-height: 20px;
      margin: 12px 0 0;
      text-align: center;
      font-size: 13px;
      color: #d70015;
    }

    .tip {
      margin: 18px 0 0;
      color: #8a8a8f;
      font-size: 12px;
      line-height: 1.55;
      text-align: center;
    }

    @media (max-width: 520px) {
      body {
        background: #f7f7f8;
      }

      .shell {
        width: 100%;
        min-height: 100dvh;
        display: flex;
        align-items: flex-start;
        padding: max(14vh, calc(var(--safe-top) + 28px)) calc(12px + var(--safe-right)) calc(20px + var(--safe-bottom)) calc(12px + var(--safe-left));
      }

      .card {
        padding: 28px 22px 24px;
        border-radius: 24px;
      }

      .brand {
        margin-bottom: 26px;
      }

      .brand-icon {
        width: 50px;
        height: 50px;
        border-radius: 15px;
        font-size: 27px;
      }

      h1 {
        font-size: 25px;
      }

      .brand p {
        font-size: 14px;
      }

      input,
      button {
        min-height: 54px;
      }
    }

    @media (max-width: 360px) {
      .shell {
        padding-left: calc(10px + var(--safe-left));
        padding-right: calc(10px + var(--safe-right));
      }

      .card {
        padding: 24px 18px 20px;
      }
    }

    @media (max-width: 900px) and (orientation: landscape) and (max-height: 520px) {
      .shell {
        align-items: flex-start;
        padding-top: max(14px, calc(var(--safe-top) + 8px));
        padding-bottom: max(14px, calc(var(--safe-bottom) + 8px));
      }

      .card {
        max-width: 430px;
        margin: 0 auto;
        padding-top: 22px;
        padding-bottom: 18px;
      }

      .brand {
        margin-bottom: 18px;
      }

      .tip {
        margin-top: 12px;
      }
    }