/* ===== 登录/注册 ===== */
    .login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 80px 20px; position: relative; }
    .login-card {
      width: 100%; max-width: 400px; background: linear-gradient(135deg, rgba(255,255,255,0.10) 0%, rgba(255,255,255,0.05) 100%);
      border: 1px solid rgba(255,255,255,0.18); border-radius: 16px;
      padding: 36px 28px 28px; box-shadow: 0 24px 80px rgba(0,0,0,0.40);
      position: relative; overflow: hidden;
      transition: border-color 0.3s ease, box-shadow 0.3s ease;
    }
    .login-card::before {
      content: ''; position: absolute; top: -30%; left: -20%;
      width: 140%; height: 80%;
      background: radial-gradient(ellipse, rgba(102,126,234,0.08) 0%, transparent 70%);
      pointer-events: none;
    }
    .login-card::after {
      content: '';
      position: absolute;
      bottom: 0; left: 15%; right: 15%;
      height: 2px;
      background: linear-gradient(90deg, transparent, #667eea, transparent);
      opacity: 0.25;
      transition: opacity 0.3s;
    }
    .login-card:hover::after { opacity: 0.7; }
    .login-card:hover { border-color: rgba(102,126,234,0.5) !important; box-shadow: 0 16px 48px rgba(0,0,0,0.4), 0 8px 32px rgba(102,126,234,0.12) !important; }
    .login-brand { text-align: center; margin-bottom: 24px; position: relative; z-index: 1; }
    .login-logo { height: 32px; width: auto; margin-bottom: 8px; }
    .login-desc { font-size: 14px; color: #7777a0; }
    .login-social-proof { font-size: 11px; color: #555570; margin-top: 4px; }
    .login-social-proof strong { color: #8888a8; font-weight: 600; }
    .login-tabs { display: flex; gap: 0; background: rgba(255,255,255,0.03); border-radius: 10px; padding: 3px; margin-bottom: 20px; position: relative; z-index: 1; }
    .login-tab { flex: 1; text-align: center; padding: 8px 0; border-radius: 8px; font-size: 13px; font-weight: 500; color: #7777a0; cursor: pointer; transition: all 0.25s; }
    .login-tab.active { color: #e0e0f0; background: rgba(102,126,234,0.15); box-shadow: 0 2px 8px rgba(0,0,0,0.15); }
    .login-form { position: relative; z-index: 1; }
    .lf-row { margin-bottom: 16px; }
    .lf-label { font-size: 12px; font-weight: 600; color: #a0a0b8; margin-bottom: 6px; letter-spacing: 0.3px; }
    .lf-label .lf-required { color: #f56c6c; }
    .lf-label .lf-checking { color: #e6a23c; font-weight: 400; margin-left: 8px; font-size: 11px; }
    .lf-label .lf-ok { color: #67c23a; font-weight: 400; margin-left: 8px; font-size: 11px; }
    .lf-label .lf-err { color: #f56c6c; font-weight: 400; margin-left: 8px; font-size: 11px; }
    .lf-input {
      width: 100%; height: 44px; background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.08); border-radius: 10px;
      padding: 0 14px; font-size: 14px; color: #eeeef8; outline: none; transition: border-color 0.25s;
    }
    .lf-input:focus { border-color: #667eea; background: rgba(255,255,255,0.06); }
    .lf-input::placeholder { color: #555570; }
    .lf-code-row { display: flex; gap: 10px; }
    .lf-code-input { flex: 1; }
    .lf-code-btn { height: 44px; padding: 0 16px; border: 1px solid rgba(102,126,234,0.25); border-radius: 10px; font-size: 13px; font-weight: 600; color: #a8b2ff; background: rgba(102,126,234,0.08); cursor: pointer; white-space: nowrap; transition: all 0.2s; }
    .lf-code-btn:hover { background: rgba(102,126,234,0.15); }
    .lf-code-btn:disabled { opacity: 0.4; cursor: not-allowed; }
    .lf-hint { font-size: 11px; color: #e6a23c; margin-top: 4px; }
    .lf-hint a { color: #667eea; text-decoration: none; }
    .lf-register-toggle { display: flex; align-items: center; gap: 8px; padding: 8px 0; cursor: pointer; font-size: 13px; color: #9999b8; user-select: none; }
    .lf-checkbox { width: 18px; height: 18px; border-radius: 4px; border: 1px solid rgba(255,255,255,0.12); display: flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 700; transition: all 0.2s; flex-shrink: 0; }
    .lf-checkbox.checked { background: #10b981; border-color: #10b981; color: white; }
    .lf-register-fields { padding: 12px 0 4px 0; }
    .lf-error { font-size: 12px; color: #f56c6c; padding: 8px 12px; border-radius: 8px; background: rgba(245,108,108,0.08); border: 1px solid rgba(245,108,108,0.15); margin-bottom: 12px; }
    .lf-submit { width: 100%; height: 46px; border: none; border-radius: 12px; font-size: 16px; font-weight: 700; letter-spacing: 2px; color: white; background: #667eea; box-shadow: 0 8px 24px rgba(102,126,234,0.25); cursor: pointer; transition: all 0.25s; }
    .lf-submit:hover { transform: translateY(-2px); background: #7b92f0; box-shadow: 0 12px 32px rgba(102,126,234,0.35); }
    .lf-submit:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }
    .lf-submit.register { background: linear-gradient(135deg, #10b981 0%, #059669 100%); }
    .lf-links { text-align: center; margin-top: 12px; }
    .lf-links a { font-size: 12px; color: #8888a8; text-decoration: none; }
    .lf-links a:hover { color: #667eea; }
    .lf-agreement { text-align: center; font-size: 11px; color: #555570; margin-top: 14px; line-height: 1.5; }
    .lf-back { text-align: center; margin-top: 8px; }
    .lf-back a { font-size: 12px; color: #555570; text-decoration: none; }
    .lf-back a:hover { color: #8888a8; }
    .success-overlay { position: fixed; inset: 0; z-index: 999; background: rgba(0,0,0,0.60); backdrop-filter: blur(8px); display: flex; align-items: center; justify-content: center; padding: 20px; }
    .success-modal { background: rgba(20,20,46,0.98); border: 1px solid rgba(255,255,255,0.08); border-radius: 20px; padding: 40px 32px 28px; max-width: 360px; width: 100%; text-align: center; box-shadow: 0 32px 80px rgba(0,0,0,0.50); }
    .success-icon { font-size: 48px; margin-bottom: 12px; }
    .success-modal h3 { font-size: 20px; font-weight: 700; color: #eeeef8; margin-bottom: 8px; }
    .success-modal p { font-size: 14px; color: #8888a8; margin-bottom: 20px; line-height: 1.5; }
    .success-tags { display: flex; gap: 8px; justify-content: center; margin-bottom: 24px; flex-wrap: wrap; }
    .success-tag { padding: 6px 16px; border-radius: 20px; font-size: 13px; cursor: pointer; background: rgba(102,126,234,0.08); border: 1px solid rgba(102,126,234,0.15); color: #a8b2ff; transition: all 0.2s; }
    .success-tag:hover { background: rgba(102,126,234,0.15); border-color: rgba(102,126,234,0.30); }
    .success-btn { width: 100%; height: 44px; border: none; border-radius: 12px; font-size: 15px; font-weight: 700; color: white; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); cursor: pointer; transition: all 0.25s; }
    .success-btn:hover { transform: translateY(-1px); }
    .success-skip { display: inline-block; margin-top: 12px; font-size: 12px; color: #555570; text-decoration: none; }
    .success-skip:hover { color: #8888a8; }