*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
      background: #0a0a0f;
      display: flex;
      align-items: center;
      justify-content: center;
      min-height: 100vh;
      overflow: hidden;
      position: relative;
    }
    body::before {
      content: '';
      position: absolute;
      inset: 0;
      background:
        radial-gradient(ellipse 60% 50% at 20% 50%, rgba(139,92,246,0.08) 0%, transparent 50%),
        radial-gradient(ellipse 50% 40% at 80% 50%, rgba(244,114,182,0.06) 0%, transparent 50%);
    }
    .auth-container {
      position: relative;
      z-index: 1;
      display: flex;
      align-items: center;
      gap: 80px;
    }
    .auth-brand {
      color: #fff;
    }
    .auth-brand-icon {
      width: 64px;
      height: 64px;
      background: linear-gradient(135deg, #f472b6, #8b5cf6);
      border-radius: 18px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 28px;
      margin-bottom: 24px;
    }
    .auth-brand h1 {
      font-size: 28px;
      font-weight: 700;
      letter-spacing: -0.5px;
      margin-bottom: 8px;
    }
    .auth-brand p {
      color: rgba(255,255,255,0.4);
      font-size: 15px;
      font-weight: 400;
      line-height: 1.6;
    }
    .auth-card {
      background: #1a1a2e;
      border-radius: 16px;
      padding: 40px;
      width: 400px;
      border: 1px solid rgba(255,255,255,0.06);
      box-shadow: 0 25px 50px rgba(0,0,0,0.4);
    }
    .auth-card h2 {
      color: #f1f5f9;
      font-size: 22px;
      font-weight: 600;
      margin-bottom: 6px;
    }
    .auth-card .auth-subtitle {
      color: rgba(255,255,255,0.4);
      font-size: 14px;
      margin-bottom: 28px;
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-group label {
      display: block;
      color: rgba(255,255,255,0.5);
      font-size: 12.5px;
      font-weight: 500;
      margin-bottom: 8px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .form-group .input-wrap {
      position: relative;
    }
    .form-group .input-wrap i {
      position: absolute;
      left: 14px;
      top: 50%;
      transform: translateY(-50%);
      color: rgba(255,255,255,0.2);
      font-size: 15px;
    }
    .form-group input {
      width: 100%;
      padding: 12px 14px 12px 42px;
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: 10px;
      font-size: 14px;
      color: #f1f5f9;
      outline: none;
      transition: all 0.2s;
      font-family: inherit;
    }
    .form-group input::placeholder {
      color: rgba(255,255,255,0.2);
    }
    .form-group input:focus {
      border-color: #8b5cf6;
      box-shadow: 0 0 0 3px rgba(139,92,246,0.15);
    }
    .auth-btn {
      width: 100%;
      padding: 12px;
      background: linear-gradient(135deg, #f472b6, #8b5cf6);
      color: #fff;
      border: none;
      border-radius: 10px;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.2s;
      font-family: inherit;
      margin-top: 8px;
    }
    .auth-btn:hover {
      transform: translateY(-1px);
      box-shadow: 0 8px 25px rgba(139,92,246,0.3);
    }
    .auth-btn:active {
      transform: translateY(0);
    }
    .auth-error {
      background: rgba(239,68,68,0.1);
      border: 1px solid rgba(239,68,68,0.2);
      color: #fca5a5;
      padding: 10px 14px;
      border-radius: 8px;
      font-size: 13px;
      margin-bottom: 20px;
      display: none;
      align-items: center;
      gap: 8px;
    }
    .auth-error i {
      color: #ef4444;
    }
    .auth-success {
      background: rgba(34,197,94,0.1);
      border: 1px solid rgba(34,197,94,0.2);
      color: #86efac;
      padding: 10px 14px;
      border-radius: 8px;
      font-size: 13px;
      margin-bottom: 20px;
      display: none;
      align-items: center;
      gap: 8px;
    }
    .auth-success i {
      color: #22c55e;
    }
    .auth-footer {
      text-align: center;
      margin-top: 24px;
      font-size: 13px;
      color: rgba(255,255,255,0.3);
    }
    .auth-footer a {
      color: #a78bfa;
      text-decoration: none;
      font-weight: 500;
    }
    .auth-footer a:hover {
      color: #c4b5fd;
    }
    .back-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: rgba(255,255,255,0.3);
      text-decoration: none;
      font-size: 13px;
      margin-bottom: 24px;
      transition: color 0.2s;
    }
    .back-link:hover {
      color: rgba(255,255,255,0.6);
    }