    /* 상단 메뉴바 — 기본·변형 동일 높이 */
    .portal-header {
      background: var(--navy);
      color: #fff;
      flex-shrink: 0;
    }
    .portal-header-inner {
      display: flex;
      align-items: stretch;
      justify-content: space-between;
      padding: 0 1rem;
      min-height: 48px;
      gap: 0.5rem;
      flex-wrap: wrap;
    }
    .portal-top-nav {
      display: flex;
      flex-wrap: wrap;
      align-items: stretch;
      gap: 0 0.25rem;
      min-height: 48px;
      font-size: 0.875rem;
      font-weight: 600;
    }
    .portal-nav-item {
      display: flex;
      align-items: stretch;
      position: relative;
    }
    .portal-nav-link,
    .portal-nav-trigger {
      display: inline-flex;
      align-items: center;
      padding: 0 0.625rem;
      min-height: 48px;
      box-sizing: border-box;
      color: rgba(255,255,255,.9);
      text-decoration: none;
      border: none;
      border-bottom: 4px solid transparent;
      background: transparent;
      font: inherit;
      letter-spacing: -0.02em;
      cursor: pointer;
      white-space: nowrap;
    }
    .portal-nav-link:hover,
    .portal-nav-trigger:hover {
      color: #fff;
      font-weight: 700;
    }
    .portal-nav-link.is-active,
    .portal-nav-trigger.is-active {
      color: #fff;
      font-weight: 700;
      border-bottom-color: #fff;
    }
    .portal-nav-dropdown {
      position: absolute;
      left: 0;
      top: 100%;
      z-index: 300;
      margin-top: -2px;
      padding-top: 4px;
      min-width: 12rem;
      display: none;
    }
    .portal-nav-item:hover .portal-nav-dropdown,
    .portal-nav-item:focus-within .portal-nav-dropdown {
      display: block;
    }
    .portal-nav-dropdown-panel {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 6px;
      box-shadow: 0 6px 16px rgba(26,43,75,.12);
      padding: 0.25rem 0;
    }
    .portal-nav-dropdown-panel a {
      display: block;
      padding: 0.45rem 0.75rem;
      font-size: 0.8125rem;
      font-weight: 600;
      color: #334155;
      text-decoration: none;
      white-space: nowrap;
    }
    .portal-nav-dropdown-panel a:hover {
      background: #eff6ff;
      color: var(--blue-ui);
    }
    .portal-nav-dropdown-panel a.is-active {
      background: #eff6ff;
      color: var(--blue-ui);
      font-weight: 700;
    }
    .portal-nav-dropdown-panel .no-link {
      display: block;
      padding: 0.45rem 0.75rem;
      font-size: 0.8125rem;
      color: #94a3b8;
      cursor: default;
    }
    .portal-header-utils {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.75rem;
      color: rgba(255,255,255,.92);
      flex-wrap: wrap;
      min-height: 48px;
    }
    .portal-header-utils .user-line {
      max-width: 11rem;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }
    .portal-header-utils .extend-btn {
      background: var(--blue-ui);
      border: none;
      color: #fff;
      padding: 0.25rem 0.5rem;
      border-radius: 3px;
      font-size: 0.6875rem;
      font-weight: 600;
      cursor: pointer;
    }
    .portal-header-utils .font-zoom {
      display: inline-flex;
      align-items: center;
      gap: 0.2rem;
      font-size: 0.6875rem;
      border: 1px solid rgba(255,255,255,.25);
      border-radius: 3px;
      padding: 0.125rem 0.25rem;
      background: rgba(0,0,0,.12);
    }
    .portal-header-utils .font-zoom button {
      background: transparent;
      border: none;
      color: #fff;
      width: 1.125rem;
      height: 1.125rem;
      cursor: pointer;
      padding: 0;
    }
    .portal-header-utils .util-ico {
      color: inherit;
      text-decoration: none;
      opacity: 0.88;
      font-size: 0.875rem;
      padding: 0.2rem;
    }
    .portal-header-utils .util-ico:hover { opacity: 1; color: #fff; }
    .variant-nav {
      display: inline-flex;
      gap: 0.125rem;
      padding: 0.125rem;
      background: rgba(0,0,0,.15);
      border-radius: 4px;
    }
    .variant-nav a {
      font-size: 0.6875rem;
      font-weight: 600;
      padding: 0.2rem 0.45rem;
      border-radius: 3px;
      color: rgba(255,255,255,.78);
      text-decoration: none;
    }
    .variant-nav a.on, .variant-nav a:hover { background: rgba(255,255,255,.18); color: #fff; }
