/* ===== 登录页 ===== */
    #loginScreen.login-screen {
      min-height: 100vh;
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 32px;
      background:
        radial-gradient(circle at 10% 12%, rgba(37, 99, 235, 0.1), transparent 30%),
        radial-gradient(circle at 92% 88%, rgba(251, 101, 20, 0.07), transparent 28%),
        linear-gradient(135deg, #f8fafc 0%, #eef3f9 52%, #f7f9fc 100%);
    }

    .login-shell {
      width: min(1120px, 100%);
      min-height: 650px;
      display: grid;
      grid-template-columns: 1.08fr 0.92fr;
      overflow: hidden;
      border: 1px solid rgba(208, 213, 221, 0.86);
      border-radius: 30px;
      background: #fff;
      box-shadow:
        0 36px 90px -34px rgba(16, 24, 40, 0.32),
        0 12px 30px -20px rgba(16, 24, 40, 0.18);
    }

    .login-brand-panel {
      position: relative;
      isolation: isolate;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      padding: 52px 56px 42px;
      color: #fff;
      background:
        radial-gradient(circle at 87% 15%, rgba(37, 99, 235, 0.5), transparent 32%),
        linear-gradient(145deg, #101828 0%, #15213d 52%, #111b31 100%);
    }

    .login-brand-panel::before,
    .login-brand-panel::after {
      content: "";
      position: absolute;
      z-index: -1;
      border-radius: 999px;
      pointer-events: none;
    }

    .login-brand-panel::before {
      width: 360px;
      height: 360px;
      right: -150px;
      top: 110px;
      border: 1px solid rgba(255, 255, 255, 0.12);
      box-shadow:
        0 0 0 42px rgba(255, 255, 255, 0.035),
        0 0 0 92px rgba(255, 255, 255, 0.025);
    }

    .login-brand-panel::after {
      width: 170px;
      height: 170px;
      left: -74px;
      bottom: -72px;
      background: rgba(251, 101, 20, 0.16);
      filter: blur(2px);
    }

.login-brand-lockup {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .login-brand-mark {
      display: inline-flex;
      width: 44px;
      height: 44px;
      align-items: center;
      justify-content: center;
      border: 1px solid rgba(255, 255, 255, 0.16);
      border-radius: 13px;
      color: #fff;
      background: rgba(255, 255, 255, 0.1);
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.14);
      font-size: 19px;
      font-weight: 700;
      letter-spacing: -0.04em;
      backdrop-filter: blur(12px);
    }

    .login-brand-name {
      display: flex;
      align-items: baseline;
      gap: 6px;
      color: #fff;
      font-size: 17px;
      font-weight: 650;
      letter-spacing: -0.02em;
    }

    .login-brand-name small {
      color: #98a2b3;
      font-size: 10px;
      font-weight: 700;
      letter-spacing: 0.16em;
    }

    .login-brand-copy {
      max-width: 490px;
      margin-top: auto;
      padding-top: 70px;
    }

    .login-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 22px;
      color: #b8c4df;
      font-size: 11px;
      font-weight: 700;
      letter-spacing: 0.16em;
      text-transform: uppercase;
    }

    .login-eyebrow::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: #fd853a;
      box-shadow: 0 0 0 5px rgba(253, 133, 58, 0.13);
    }

    .login-brand-copy h2 {
      margin: 0;
      color: #fff;
      font-size: clamp(38px, 4.3vw, 58px);
      font-weight: 560;
      line-height: 1.1;
      letter-spacing: -0.05em;
    }

    .login-brand-copy h2 span {
      color: #93c5fd;
    }

    .login-brand-copy > p {
      max-width: 440px;
      margin: 22px 0 0;
      color: #b8c4d7;
      font-size: 14px;
      line-height: 1.85;
    }

    .login-feature-list {
      display: grid;
      gap: 0;
      margin-top: 42px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .login-feature {
      display: grid;
      grid-template-columns: 34px 1fr;
      gap: 14px;
      align-items: center;
      padding: 15px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .login-feature-index {
      color: #6f83a5;
      font-size: 10px;
      font-weight: 700;
      letter-spacing: 0.12em;
    }

    .login-feature strong {
      display: block;
      color: #f2f4f7;
      font-size: 13px;
      font-weight: 600;
    }

    .login-feature span {
      display: block;
      margin-top: 3px;
      color: #8fa0ba;
      font-size: 11px;
    }

    .login-brand-footer {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      margin-top: 36px;
      color: #788aa8;
      font-size: 10px;
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }

    .login-brand-footer span:last-child {
      display: inline-flex;
      align-items: center;
      gap: 7px;
    }

    .login-brand-footer span:last-child::before {
      content: "";
      width: 5px;
      height: 5px;
      border-radius: 50%;
      background: #32d583;
      box-shadow: 0 0 0 4px rgba(50, 213, 131, 0.1);
    }

    .login-form-panel {
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 52px;
      background: #fff;
    }

    .login-form-content {
      width: min(372px, 100%);
    }

    .login-form-kicker {
      margin: 0 0 10px;
      color: #2563eb;
      font-size: 10px;
      font-weight: 750;
      letter-spacing: 0.18em;
      text-transform: uppercase;
    }

    .login-form-content h1 {
      margin: 0;
      color: #101828;
      font-size: 32px;
      font-weight: 620;
      letter-spacing: -0.04em;
    }

    .login-form-intro {
      margin: 12px 0 34px;
      color: #667085;
      font-size: 13px;
      line-height: 1.7;
    }

    .login-field {
      margin-bottom: 20px;
    }

    .login-label {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 9px;
      color: #344054;
      font-size: 12px;
      font-weight: 600;
    }

    .login-label span {
      color: #98a2b3;
      font-size: 10px;
      font-weight: 500;
    }

    .login-input-wrap {
      position: relative;
    }

    .login-input-wrap svg {
      position: absolute;
      top: 50%;
      left: 16px;
      width: 17px;
      height: 17px;
      color: #98a2b3;
      transform: translateY(-50%);
      pointer-events: none;
      transition: color 0.18s ease;
    }

    .login-input {
      width: 100%;
      height: 52px;
      padding: 0 16px 0 46px;
      border: 1px solid #d0d5dd;
      border-radius: 12px;
      outline: none;
      color: #101828;
      background: #fff;
      font: inherit;
      font-size: 13px;
      transition:
        border-color 0.18s ease,
        box-shadow 0.18s ease,
        background-color 0.18s ease;
    }

    .login-input::placeholder {
      color: #98a2b3;
    }

    .login-input:hover {
      border-color: #b8c1d0;
    }

    .login-input:focus {
      border-color: #2563eb;
      box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
    }

    .login-input-wrap:focus-within svg {
      color: #2563eb;
    }

    .login-error {
      display: flex;
      align-items: flex-start;
      gap: 8px;
      margin: 2px 0 16px;
      padding: 10px 12px;
      border: 1px solid #fecdca;
      border-radius: 10px;
      color: #b42318;
      background: #fffbfa;
      font-size: 12px;
      line-height: 1.5;
    }

    .login-error[hidden] {
      display: none;
    }

    .login-error::before {
      content: "!";
      display: inline-flex;
      flex: 0 0 17px;
      width: 17px;
      height: 17px;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      color: #fff;
      background: #f04438;
      font-size: 10px;
      font-weight: 700;
    }

    .login-submit {
      position: relative;
      display: flex;
      width: 100%;
      height: 52px;
      align-items: center;
      justify-content: center;
      gap: 10px;
      border: 0;
      border-radius: 12px;
      color: #fff;
      background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
      box-shadow:
        0 12px 22px -12px rgba(37, 99, 235, 0.72),
        inset 0 1px 0 rgba(255, 255, 255, 0.18);
      font: inherit;
      font-size: 13px;
      font-weight: 650;
      cursor: pointer;
      transition:
        transform 0.18s ease,
        box-shadow 0.18s ease,
        opacity 0.18s ease;
    }

    .login-submit:hover:not(:disabled) {
      transform: translateY(-1px);
      box-shadow:
        0 16px 28px -12px rgba(37, 99, 235, 0.78),
        inset 0 1px 0 rgba(255, 255, 255, 0.18);
    }

    .login-submit:active:not(:disabled) {
      transform: translateY(0);
    }

    .login-submit:focus-visible {
      outline: 3px solid rgba(37, 99, 235, 0.24);
      outline-offset: 3px;
    }

    .login-submit:disabled {
      cursor: wait;
      opacity: 0.72;
    }

    .login-submit-arrow {
      width: 16px;
      height: 16px;
      transition: transform 0.18s ease;
    }

    .login-submit:hover:not(:disabled) .login-submit-arrow {
      transform: translateX(2px);
    }

    .login-submit[data-loading="true"] .login-submit-arrow {
      width: 14px;
      height: 14px;
      border: 2px solid rgba(255, 255, 255, 0.42);
      border-top-color: #fff;
      border-radius: 50%;
      animation: login-spin 0.7s linear infinite;
    }

    .login-submit[data-loading="true"] .login-submit-arrow path {
      display: none;
    }

    @keyframes login-spin {
      to { transform: rotate(360deg); }
    }

    .login-note {
      display: flex;
      align-items: flex-start;
      gap: 8px;
      margin-top: 22px;
      color: #98a2b3;
      font-size: 10px;
      line-height: 1.65;
    }

    .login-note svg {
      flex: 0 0 14px;
      width: 14px;
      height: 14px;
      margin-top: 1px;
      color: #667085;
    }

    .login-mobile-brand {
      display: none;
    }

    @media (max-width: 900px) {
      #loginScreen.login-screen {
        align-items: flex-start;
        padding: 18px;
      }

      .login-shell {
        min-height: 0;
        grid-template-columns: 1fr;
        border-radius: 22px;
      }

      .login-brand-panel {
        display: none;
      }

      .login-form-panel {
        padding: 34px 26px 30px;
      }

      .login-mobile-brand {
        display: flex;
        align-items: center;
        gap: 11px;
        margin-bottom: 36px;
      }

      .login-mobile-brand .login-brand-mark {
        width: 40px;
        height: 40px;
        border-color: #e4e7ec;
        color: #fff;
        background: #101828;
        box-shadow: none;
      }

      .login-mobile-brand .login-brand-name {
        color: #101828;
      }

      .login-mobile-brand .login-brand-name small {
        color: #98a2b3;
      }
    }

    @media (max-width: 480px) {
      #loginScreen.login-screen {
        padding: 0;
        background: #fff;
      }

      .login-shell {
        min-height: 100vh;
        border: 0;
        border-radius: 0;
        box-shadow: none;
      }

      .login-form-panel {
        align-items: flex-start;
        padding: 28px 22px;
      }

      .login-form-content h1 {
        font-size: 28px;
      }
    }