:root {
      color-scheme: light;
      --bg: #eef1f5;
      --surface: #ffffff;
      --surface-soft: #f7f9fb;
      --line: #d8dee8;
      --line-strong: #c4ccd9;
      --text: #17202b;
      --muted: #647084;
      --accent: #0f766e;
      --accent-soft: #e7f4f2;
      --blue: #2563eb;
      --blue-soft: #eaf1ff;
      --green: #137333;
      --green-soft: #edf8ef;
      --amber: #a16207;
      --amber-soft: #fff6df;
      --red: #b42318;
      --red-soft: #fff0ef;
      --shadow: 0 12px 30px rgba(30, 41, 59, 0.08);
      --radius: 8px;
    }

    * { box-sizing: border-box; }

    [hidden] {
      display: none !important;
    }

    body {
      margin: 0;
      min-width: 1120px;
      background: var(--bg);
      color: var(--text);
      font: 14px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    }

    .login-view {
      min-height: 100vh;
      display: grid;
      place-items: center;
      padding: 24px;
      background: var(--bg);
    }

    .login-card {
      display: grid;
      gap: 14px;
      width: min(420px, 100%);
      padding: 24px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #fff;
      box-shadow: var(--shadow);
    }

    .login-card h1 {
      margin: 0 0 4px;
      font-size: 24px;
    }

    .login-card p {
      margin: 0;
      color: var(--muted);
    }

    .login-card label {
      display: grid;
      gap: 6px;
      color: var(--muted);
      font-size: 12px;
      font-weight: 650;
    }

    .login-view[hidden],
    .app[hidden] {
      display: none;
    }

    button, input, select {
      font: inherit;
    }

    button {
      border: 1px solid var(--line);
      background: var(--surface);
      color: var(--text);
      border-radius: 6px;
      padding: 8px 12px;
      cursor: pointer;
      white-space: nowrap;
    }

    button:hover {
      border-color: var(--line-strong);
      background: var(--surface-soft);
    }

    button:disabled {
      cursor: not-allowed;
      opacity: 0.58;
    }

    .button-loading {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
    }

    .button-loading::before {
      content: "";
      width: 12px;
      height: 12px;
      border: 2px solid currentColor;
      border-right-color: transparent;
      border-radius: 999px;
      animation: button-spin 700ms linear infinite;
    }

    .table-loading {
      position: sticky;
      left: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-width: 220px;
      transform: translateX(-50%);
    }

    .loading-row td {
      height: 220px;
      padding: 0;
      vertical-align: middle;
    }

    .loading-spinner {
      width: 16px;
      height: 16px;
      border: 2px solid var(--line-strong);
      border-right-color: var(--accent);
      border-radius: 999px;
      animation: button-spin 700ms linear infinite;
    }

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

    .app {
      display: grid;
      grid-template-columns: 232px minmax(0, 1fr);
      min-height: 100vh;
    }

    .sidebar {
      background: #18202a;
      color: #eef2f7;
      padding: 18px 14px;
      position: sticky;
      top: 0;
      height: 100vh;
    }

    .brand {
      padding: 6px 10px 18px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.12);
      margin-bottom: 14px;
    }

    .brand-title {
      margin: 0;
      font-size: 20px;
      line-height: 1.2;
      font-weight: 750;
    }

    .nav {
      display: grid;
      gap: 6px;
    }

    .nav button {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border: 0;
      background: transparent;
      color: #ccd5e2;
      padding: 10px;
      text-align: left;
    }

    .nav button.active,
    .nav button:hover {
      color: #ffffff;
      background: rgba(255, 255, 255, 0.10);
    }

    .nav-group {
      display: grid;
      gap: 4px;
    }

    .nav-parent {
      font-weight: 700;
    }

    .nav-subnav {
      display: grid;
      gap: 3px;
      padding-left: 12px;
      margin: -2px 0 4px;
      border-left: 1px solid rgba(255, 255, 255, 0.13);
    }

    .nav-subnav[hidden] {
      display: none;
    }

    .nav-subnav button {
      min-height: 34px;
      padding: 7px 10px;
      color: #aeb9c8;
      font-size: 13px;
      font-weight: 500;
    }

    .nav-subnav button.active {
      color: #ffffff;
      background: rgba(15, 118, 110, 0.28);
    }

    .nav-count {
      min-width: 26px;
      height: 20px;
      border-radius: 999px;
      display: inline-grid;
      place-items: center;
      padding: 0 7px;
      color: #ffffff;
      background: rgba(255, 255, 255, 0.16);
      font-size: 12px;
    }

    .workspace {
      min-width: 0;
      display: grid;
      grid-template-rows: auto 1fr;
    }

    .topbar {
      position: sticky;
      top: 0;
      z-index: 20;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      padding: 16px 22px;
      background: rgba(255, 255, 255, 0.92);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(12px);
    }

    .title-heading {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
    }

    .title-block h1 {
      margin: 0;
      font-size: 22px;
      line-height: 1.25;
    }

    .server-storage-status {
      display: inline-flex;
      align-items: center;
      min-height: 28px;
      padding: 3px 10px;
      border: 1px solid #bfdbfe;
      border-radius: 999px;
      color: var(--blue);
      background: var(--blue-soft);
      font-size: 12px;
      font-weight: 700;
      white-space: nowrap;
    }

    .server-storage-status.warning {
      border-color: #f3d28b;
      color: var(--amber);
      background: var(--amber-soft);
    }

    .server-storage-status.critical {
      border-color: #ffd0cc;
      color: var(--red);
      background: var(--red-soft);
    }

    .title-meta {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 5px;
      color: var(--muted);
      font-size: 12px;
    }

    .source-picker {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--muted);
    }

    .source-picker select {
      min-height: 30px;
      max-width: 280px;
      padding: 4px 28px 4px 8px;
      border-radius: 6px;
      font-size: 12px;
    }

    .source-picker span {
      white-space: nowrap;
    }

    .top-actions {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .user-menu {
      position: relative;
      display: inline-flex;
    }

    .avatar-button {
      width: 36px;
      height: 36px;
      display: inline-grid;
      place-items: center;
      padding: 0;
      border-radius: 999px;
      border-color: #b7c2d2;
      background: #f8fafc;
      color: var(--accent);
    }

    .avatar-button svg {
      width: 20px;
      height: 20px;
      fill: currentColor;
    }

    .avatar-button:hover,
    .avatar-button[aria-expanded="true"] {
      border-color: rgba(15, 118, 110, 0.45);
      background: var(--accent-soft);
    }

    .user-menu-panel {
      position: absolute;
      top: calc(100% + 8px);
      right: 0;
      z-index: 80;
      min-width: 180px;
      display: grid;
      gap: 6px;
      padding: 8px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--surface);
      box-shadow: var(--shadow);
    }

    .user-menu-name {
      padding: 6px 8px 8px;
      border-bottom: 1px solid var(--line);
      color: var(--muted);
      font-size: 12px;
      font-weight: 700;
    }

    .user-menu-panel button {
      width: 100%;
      text-align: left;
      border-color: transparent;
      background: transparent;
    }

    .user-menu-panel button:hover {
      border-color: var(--line);
      background: var(--surface-soft);
    }

    .user-menu-panel button:last-child {
      color: var(--red);
    }

    .global-status {
      color: var(--accent);
      font-weight: 650;
    }

    .primary {
      color: #ffffff;
      border-color: var(--accent);
      background: var(--accent);
    }

    .primary:hover {
      background: #0d655f;
      border-color: #0d655f;
    }

    button.danger {
      color: var(--red);
      border-color: #ffd0cc;
      background: var(--red-soft);
    }

    button.danger:hover {
      border-color: #f2aaa3;
      background: #ffe1de;
    }

    button.archive {
      color: var(--amber);
      border-color: #f3d28b;
      background: var(--amber-soft);
    }

    button.archive:hover {
      border-color: #d69b32;
      background: #ffefc2;
    }

    main {
      padding: 20px 22px 28px;
    }

    .grid {
      display: grid;
      gap: 14px;
      align-content: start;
      align-items: start;
    }

    .account-page {
      display: grid;
      gap: 14px;
      align-content: start;
    }

    .account-page[hidden],
    .grid[hidden] {
      display: none;
    }