* {
      margin: 0;
      padding: 0;
      box-sizing: border-box
    }

    /* ===== 多主题变量（统一命名：FM别名 + Portal原名） ===== */
    :root,
    [data-theme="dark"] {
      --bg: #0a0e17;
      --surface: #111827;
      --surface-hover: #1a2332;
      --surface-light: #1e293b;
      --border: #1e293b;
      --border-glow: #334155;
      --border-focus: #3b82f6;
      --text: #e2e8f0;
      --text-dim: #94a3b8;
      --text-muted: #64748b;
      --accent: #3b82f6;
      --accent-hover: #2563eb;
      --accent-glow: rgba(59, 130, 246, .2);
      --accent2: #8b5cf6;
      --accent2-glow: rgba(139, 92, 246, .15);
      --accent3: #10b981;
      --accent3-glow: rgba(16, 185, 129, .15);
      --danger: #ef4444;
      --danger-glow: rgba(239, 68, 68, .15);
      --gradient1: linear-gradient(135deg, #3b82f6, #60a5fa);
      --gradient2: linear-gradient(135deg, #8b5cf6, #a78bfa);
      --gradient3: linear-gradient(135deg, #10b981, #34d399);
      --glow1: #3b82f6;
      --glow2: #8b5cf6;
      /* FM 统一别名 */
      --bg-primary: var(--bg);
      --bg-secondary: var(--surface-light);
      --bg-card: var(--surface);
      --bg-card-hover: var(--surface-hover);
      --bg-input: var(--bg);
      --text-primary: var(--text);
      --text-secondary: var(--text-dim);
      --success: var(--accent3);
      --success-bg: var(--accent3-glow);
      --danger-bg: var(--danger-glow);
      --radius: 12px;
      --radius-lg: 16px;
      --shadow: 0 4px 24px rgba(0, 0, 0, .3);
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, .2)
    }



    [data-theme="light"] {
      --bg: #eef1f8;
      --surface: #f8f9fc;
      --surface-hover: #eef0f7;
      --surface-light: #e8ebf4;
      --border: #d8dce8;
      --border-glow: #b8c0d2;
      --border-focus: #5b6cf0;
      --text: #1a1d2e;
      --text-dim: #5b6480;
      --text-muted: #8890a8;
      --accent: #5b6cf0;
      --accent-hover: #4a5ae0;
      --accent-glow: rgba(91, 108, 240, .12);
      --accent2: #7c3aed;
      --accent2-glow: rgba(124, 58, 237, .1);
      --accent3: #16a34a;
      --accent3-glow: rgba(22, 163, 74, .1);
      --danger: #dc2626;
      --danger-glow: rgba(220, 38, 38, .1);
      --gradient1: linear-gradient(135deg, #5b6cf0, #818cf8);
      --gradient2: linear-gradient(135deg, #7c3aed, #a78bfa);
      --gradient3: linear-gradient(135deg, #16a34a, #4ade80);
      --glow1: #5b6cf0;
      --glow2: #7c3aed;
      --bg-primary: var(--bg);
      --bg-secondary: var(--surface-light);
      --bg-card: var(--surface);
      --bg-card-hover: var(--surface-hover);
      --bg-input: var(--bg);
      --text-primary: var(--text);
      --text-secondary: var(--text-dim);
      --success: var(--accent3);
      --success-bg: var(--accent3-glow);
      --danger-bg: var(--danger-glow)
    }

    html,
    body {
      height: 100%;
      font-family: 'Inter', system-ui, sans-serif;
      background: var(--bg);
      color: var(--text);
      overflow-x: hidden;
      transition: background .3s, color .3s
    }

    /* ===== Bing 每日壁纸背景 ===== */
    .bg-wallpaper {
      position: fixed;
      inset: 0;
      z-index: 0;
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
      opacity: 0;
      transition: opacity 1.2s ease;
    }

    .bg-wallpaper.loaded {
      opacity: 1;
    }

    .bg-wallpaper-overlay {
      position: fixed;
      inset: 0;
      z-index: 0;
      background: rgba(0, 0, 0, 0.55);
      pointer-events: none;
      transition: opacity .6s;
    }

    [data-theme="light"] .bg-wallpaper-overlay {
      background: rgba(255, 255, 255, 0.55);
    }

    /* 壁纸加载后隐藏网格和光晕 */
    body.wp-loaded .bg-grid,
    body.wp-loaded .bg-glow {
      opacity: 0 !important;
      transition: opacity .8s;
    }

    .bg-grid {
      position: fixed;
      inset: 0;
      background-image: radial-gradient(circle at 1px 1px, rgba(255, 255, 255, .03) 1px, transparent 0);
      background-size: 40px 40px;
      pointer-events: none;
      z-index: 1;
    }

    [data-theme="light"] .bg-grid {
      background-image: radial-gradient(circle at 1px 1px, rgba(0, 0, 0, .04) 1px, transparent 0)
    }

    .bg-glow {
      position: fixed;
      width: 600px;
      height: 600px;
      border-radius: 50%;
      filter: blur(120px);
      opacity: .12;
      pointer-events: none;
      transition: background .3s
    }

    .bg-glow.g1 {
      top: -200px;
      left: -100px;
      background: var(--glow1)
    }

    .bg-glow.g2 {
      bottom: -200px;
      right: -100px;
      background: var(--glow2)
    }

    .page {
      position: relative;
      z-index: 1;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 40px 20px;
      transition: opacity .4s, transform .4s
    }

    .page.hidden {
      display: none
    }

    .page.fade-out {
      opacity: 0;
      transform: scale(.97)
    }

    .login-card {
      background: rgba(17, 24, 39, 0.75);
      backdrop-filter: blur(20px) saturate(1.4);
      -webkit-backdrop-filter: blur(20px) saturate(1.4);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 24px;
      padding: 48px 40px 40px;
      width: 100%;
      max-width: 420px;
      position: relative;
      overflow: hidden;
      box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
      transition: background .3s, border-color .3s
    }

    [data-theme="light"] .login-card {
      background: rgba(255, 255, 255, 0.75);
      border-color: rgba(0, 0, 0, 0.08);
      box-shadow: 0 8px 40px rgba(0, 0, 0, 0.1);
    }

    .login-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--gradient1)
    }

    .login-logo {
      text-align: center;
      margin-bottom: 32px
    }

    .login-logo .icon {
      width: 64px;
      height: 64px;
      border-radius: 18px;
      background: var(--accent-glow);
      border: 1px solid rgba(59, 130, 246, .2);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 28px;
      margin-bottom: 16px
    }

    .login-logo h1 {
      font-size: 26px;
      font-weight: 800;
      background: linear-gradient(135deg, var(--text), var(--text-dim));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent
    }

    .login-logo p {
      color: var(--text-muted);
      font-size: 13px;
      margin-top: 6px
    }

    .form-group {
      margin-bottom: 20px
    }

    .form-group label {
      display: block;
      font-size: 13px;
      font-weight: 500;
      color: var(--text-dim);
      margin-bottom: 8px
    }

    .form-group input {
      width: 100%;
      padding: 12px 16px;
      border-radius: 10px;
      border: 1px solid var(--border);
      background: var(--bg);
      color: var(--text);
      font-size: 15px;
      font-family: inherit;
      outline: none;
      transition: border .2s, box-shadow .2s, background .3s
    }

    .form-group input:focus {
      border-color: var(--border-focus);
      box-shadow: 0 0 0 3px var(--accent-glow)
    }

    .form-group input::placeholder {
      color: var(--text-muted)
    }

    .login-btn {
      width: 100%;
      padding: 13px;
      border: none;
      border-radius: 10px;
      background: var(--gradient1);
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      font-family: inherit;
      cursor: pointer;
      transition: all .2s;
      margin-top: 4px
    }

    .login-btn:hover {
      box-shadow: 0 4px 20px var(--accent-glow);
      transform: translateY(-1px)
    }

    .login-btn:active {
      transform: translateY(0)
    }

    .login-btn:disabled {
      opacity: .6;
      cursor: not-allowed;
      transform: none
    }

    .error-msg {
      background: var(--danger-glow);
      border: 1px solid rgba(239, 68, 68, .2);
      border-radius: 8px;
      padding: 10px 14px;
      font-size: 13px;
      color: #fca5a5;
      margin-bottom: 16px;
      display: none;
      animation: shake .4s
    }

    .error-msg.show {
      display: block
    }

    @keyframes shake {

      0%,
      100% {
        transform: translateX(0)
      }

      20%,
      60% {
        transform: translateX(-6px)
      }

      40%,
      80% {
        transform: translateX(6px)
      }
    }

    .dash-header {
      text-align: center;
      margin-bottom: 48px
    }

    .dash-header .tag {
      display: inline-block;
      font-size: 11px;
      font-weight: 600;
      letter-spacing: 2px;
      text-transform: uppercase;
      color: var(--accent);
      background: var(--accent-glow);
      backdrop-filter: blur(10px);
      padding: 5px 14px;
      border-radius: 20px;
      border: 1px solid rgba(59, 130, 246, .15);
      margin-bottom: 16px
    }

    /* 时钟悬浮在左上角 */
    .clock-widget {
      position: fixed;
      top: 20px;
      left: 24px;
      z-index: 10;
      display: none;
    }

    .clock-widget .cw-time {
      font-size: 36px;
      font-weight: 200;
      letter-spacing: 1px;
      color: #fff;
      text-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
      line-height: 1;
    }

    .clock-widget .cw-date {
      font-size: 12px;
      color: rgba(255, 255, 255, 0.6);
      text-shadow: 0 1px 6px rgba(0, 0, 0, 0.5);
      margin-top: 4px;
    }

    .dash-header h1 {
      font-size: 38px;
      font-weight: 800;
      color: var(--text);
      margin-bottom: 6px;
      text-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
    }

    .dash-header p {
      color: var(--text-dim);
      font-size: 15px;
      text-shadow: 0 1px 6px rgba(0, 0, 0, 0.4);
    }

    .cards {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 28px;
      width: 100%;
      max-width: 1100px
    }

    .card {
      position: relative;
      background: rgba(17, 24, 39, 0.82);
      backdrop-filter: blur(16px) saturate(1.3);
      -webkit-backdrop-filter: blur(16px) saturate(1.3);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 20px;
      padding: 40px 32px 32px;
      cursor: pointer;
      transition: all .35s cubic-bezier(.4, 0, .2, 1);
      overflow: hidden;
      text-decoration: none;
      color: inherit;
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    }

    [data-theme="light"] .card {
      background: rgba(255, 255, 255, 0.85);
      border-color: rgba(0, 0, 0, 0.1);
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    }

    .card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      opacity: 0;
      transition: opacity .35s
    }

    .card:nth-child(1)::before {
      background: var(--gradient1)
    }

    .card:nth-child(2)::before {
      background: var(--gradient2)
    }

    .card:nth-child(3)::before {
      background: var(--gradient3)
    }

    .card:nth-child(3) .card-icon {
      background: var(--accent3-glow);
      border: 1px solid rgba(16, 185, 129, .2)
    }

    .card:hover {
      transform: translateY(-6px);
      border-color: rgba(255, 255, 255, 0.15);
      background: rgba(17, 24, 39, 0.9);
      box-shadow: 0 20px 60px rgba(0, 0, 0, .5)
    }

    [data-theme="light"] .card:hover {
      background: rgba(255, 255, 255, 0.8);
      border-color: rgba(0, 0, 0, 0.1);
      box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    }

    .card:hover::before {
      opacity: 1
    }

    .card-icon {
      width: 56px;
      height: 56px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 26px;
      margin-bottom: 20px;
      transition: transform .3s
    }

    .card:nth-child(1) .card-icon {
      background: var(--accent-glow);
      border: 1px solid rgba(59, 130, 246, .2)
    }

    .card:nth-child(2) .card-icon {
      background: var(--accent2-glow);
      border: 1px solid rgba(139, 92, 246, .2)
    }

    .card:hover .card-icon {
      transform: scale(1.1)
    }

    .card-title {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 8px
    }

    .card-desc {
      color: var(--text-dim);
      font-size: 14px;
      line-height: 1.7;
      margin-bottom: 20px
    }

    .card-meta {
      display: flex;
      gap: 10px;
      flex-wrap: wrap
    }

    .tag-sm {
      font-size: 11px;
      font-weight: 500;
      padding: 4px 10px;
      border-radius: 6px;
      background: rgba(255, 255, 255, .05);
      color: var(--text-muted);
      border: 1px solid rgba(255, 255, 255, .06)
    }

    [data-theme="light"] .tag-sm {
      background: rgba(0, 0, 0, .04);
      border-color: rgba(0, 0, 0, .06)
    }

    .card-arrow {
      position: absolute;
      top: 36px;
      right: 28px;
      font-size: 20px;
      color: var(--text-muted);
      transition: all .3s
    }

    .card:hover .card-arrow {
      transform: translateX(4px);
      color: var(--text)
    }

    .top-bar {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 10;
      display: flex;
      justify-content: flex-end;
      gap: 8px;
      padding: 16px 24px
    }

    .top-btn,
    .theme-toggle-btn {
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
    }

    .top-btn {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 8px 16px;
      color: var(--text-dim);
      font-size: 13px;
      font-family: inherit;
      cursor: pointer;
      transition: all .2s;
      display: none;
      text-decoration: none
    }

    .top-btn:hover {
      border-color: var(--accent);
      color: var(--accent);
      background: var(--accent-glow)
    }

    .top-btn.danger:hover {
      border-color: var(--danger);
      color: #fca5a5;
      background: var(--danger-glow)
    }

    /* 主题切换器 */
    .theme-toggle {
      position: relative;
      display: inline-block
    }

    .theme-toggle-btn {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 8px 14px;
      color: var(--text-dim);
      font-size: 13px;
      font-family: inherit;
      cursor: pointer;
      transition: all .2s
    }

    .theme-toggle-btn:hover {
      border-color: var(--accent);
      color: var(--accent)
    }

    .theme-popup {
      position: absolute;
      top: calc(100% + 6px);
      right: 0;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 12px;
      box-shadow: 0 12px 40px rgba(0, 0, 0, .4);
      min-width: 160px;
      display: none;
      overflow: hidden;
      z-index: 20
    }

    .theme-popup.show {
      display: block
    }

    .theme-opt {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 10px 14px;
      cursor: pointer;
      font-size: 13px;
      color: var(--text-dim);
      border: none;
      background: none;
      width: 100%;
      text-align: left;
      transition: all .15s;
      font-family: inherit
    }

    .theme-opt:hover {
      background: var(--surface-hover);
      color: var(--text)
    }

    .theme-opt.active {
      color: var(--accent);
      font-weight: 600
    }

    .theme-dot {
      width: 14px;
      height: 14px;
      border-radius: 50%;
      border: 2px solid transparent;
      flex-shrink: 0
    }

    .footer {
      margin-top: 56px;
      color: var(--text-muted);
      font-size: 12px;
      text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
    }

    .wallpaper-credit {
      position: fixed;
      bottom: 12px;
      right: 16px;
      font-size: 11px;
      color: rgba(255, 255, 255, 0.7);
      z-index: 2;
      text-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
    }

    .wallpaper-credit a {
      color: rgba(255, 255, 255, 0.75);
      text-decoration: none;
    }

    .wallpaper-credit a:hover {
      color: rgba(255, 255, 255, 0.95);
    }

    @media(max-width:768px) {
      .login-card {
        padding: 36px 24px 28px
      }

      .dash-header h1 {
        font-size: 28px
      }

      .cards {
        grid-template-columns: 1fr
      }

      .card {
        padding: 28px 24px 24px
      }
    }