/* ========================================
       Design Tokens — 以读攻独 · Refined Literary
       ======================================== */
    :root {
      --color-bg:        #fbf9f6;
      --color-bg-alt:    #f3efe8;
      --color-surface:   #ffffff;
      --color-text:      #2d2422;
      --color-text-2:    #6e6258;
      --color-text-3:    #a09588;
      --color-accent:    #c17d4b;
      --color-accent-h:  #a46533;
      --color-accent-l:  #d9a87a;
      --color-accent-bg: #fef7f1;
      --color-border:    rgba(0,0,0,0.06);
      --color-success:   #6b9070;
      --color-warning:   #d4a843;
      --color-danger:    #c4665a;
      --color-tag-upcoming:  #6b9070;
      --color-tag-active:    #d4a843;
      --color-tag-completed: #8b7b6b;
      --font-sans:   'Inter', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
      --font-serif:  'Noto Serif SC', 'STSong', 'SimSun', serif;
      --space-1: 8px;   --space-2: 16px;  --space-3: 24px;
      --space-4: 32px;  --space-5: 48px;  --space-6: 64px;
      --space-7: 80px;  --space-8: 96px;
      --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
      --shadow-md: 0 2px 12px rgba(0,0,0,0.05);
      --shadow-lg: 0 8px 30px rgba(0,0,0,0.07);
    }

    /* ========================================
       Reset & Base
       ======================================== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { font-size: 16px; scroll-behavior: smooth; }
    body {
      font-family: var(--font-sans);
      background: var(--color-bg);
      color: var(--color-text);
      line-height: 1.7;
      min-height: 100vh;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }
    a { color: var(--color-accent); text-decoration: none; transition: color 0.2s ease; }
    a:hover { color: var(--color-accent-h); }
    img { max-width: 100%; display: block; }
    button { cursor: pointer; font-family: inherit; }
    input, textarea, select { font-family: inherit; font-size: 0.95rem; }
    h1, h2, h3, h4 { font-family: var(--font-serif); line-height: 1.35; color: var(--color-text); }
    h1 { font-size: 2.5rem; font-weight: 700; letter-spacing: 0.02em; }
    h2 { font-size: 1.7rem; font-weight: 600; }
    h3 { font-size: 1.25rem; font-weight: 600; }

    /* ========================================
       Layout
       ======================================== */
    .container { max-width: 1080px; margin: 0 auto; padding: 0 var(--space-3); }
    .section { padding: var(--space-7) 0; }

    /* Top Nav — NatGeo-inspired with accent line */
    #topnav {
      position: sticky; top: 0; z-index: 100;
      background: rgba(251,249,246,0.85); backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
    }
    .nav-accent-line { height: 2px; background: var(--color-accent); }
    #topnav .container {
      display: flex; align-items: center; justify-content: space-between;
      height: 64px;
    }
    .nav-left {
      display: flex; align-items: center; gap: var(--space-3);
    }
    .nav-brand {
      font-family: var(--font-serif); font-size: 1.35rem; font-weight: 700;
      color: var(--color-accent); display: flex; align-items: center; gap: 7px;
      letter-spacing: 0.04em; flex-shrink: 0;
    }
    .nav-brand i { width: 26px; height: 26px; stroke-width: 2; }
    .nav-links { display: flex; align-items: center; gap: 4px; list-style: none; }
    .nav-links a {
      padding: 6px 14px; border-radius: var(--radius-sm);
      color: var(--color-text-2); font-weight: 500; font-size: 0.9rem;
      transition: all 0.2s ease;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--color-accent); background: var(--color-accent-bg);
    }
    .nav-right {
      display: flex; align-items: center; gap: var(--space-2);
    }
    .nav-user { display: flex; align-items: center; gap: var(--space-2); }
    .nav-user-link {
      padding: 6px 14px; border-radius: var(--radius-sm);
      color: var(--color-text-2); font-weight: 500; font-size: 0.9rem;
      transition: all 0.2s ease;
    }
    .nav-user-link:hover {
      color: var(--color-accent); background: var(--color-accent-bg);
    }
    .nav-user .avatar {
      width: 34px; height: 34px; border-radius: 50%; background: var(--color-accent-bg);
      display: flex; align-items: center; justify-content: center;
      font-weight: 600; font-size: 0.85rem; color: var(--color-accent);
      overflow: hidden;
    }
    .nav-user .avatar img { width: 100%; height: 100%; object-fit: cover; }

    /* 铃铛 */
    .btn-bell {
      position: relative; width: 32px; height: 32px; border: 1px solid var(--color-border);
      background: var(--color-bg); cursor: pointer; color: var(--color-text-2);
      border-radius: 50%; display: flex; align-items: center; justify-content: center;
      transition: background 0.2s, color 0.2s, border-color 0.2s;
    }
    .btn-bell:hover { background: var(--color-accent-bg); color: var(--color-accent); border-color: var(--color-accent); }
    .btn-bell i { width: 16px; height: 16px; }
    .bell-dot {
      position: absolute; top: 2px; right: 2px;
      width: 8px; height: 8px; border-radius: 50%;
      background: #e74c3c; border: 1.5px solid #fff; display: block;
    }

    /* 通知下拉 */
    .notification-panel {
      position: fixed; top: 56px; right: 24px; width: 400px; max-width: calc(100vw - 32px);
      max-height: 70vh; overflow-y: auto; z-index: 1001;
      background: #fff; border-radius: var(--radius); box-shadow: 0 8px 32px rgba(0,0,0,0.12);
      border: 1px solid var(--color-border);
    }
    .notification-head {
      display: flex; align-items: center; justify-content: space-between;
      padding: 14px 16px; border-bottom: 1px solid var(--color-border);
      font-weight: 700; font-size: 0.95rem; position: sticky; top: 0; background: #fff;
      border-radius: var(--radius) var(--radius) 0 0;
    }
    .btn-read-all { font-size: 0.78rem; color: var(--color-accent); border: none; background: none; cursor: pointer; }
    .btn-read-all:hover { text-decoration: underline; }
    .notification-empty {
      display: flex; flex-direction: column; align-items: center; gap: 8px;
      padding: 32px; color: var(--color-text-3);
    }
    .notification-empty i { width: 32px; height: 32px; }
    .notification-item {
      display: flex; align-items: flex-start; gap: 10px; padding: 14px 16px;
      border-bottom: 1px solid rgba(0,0,0,0.04); transition: background 0.15s;
    }
    .notification-item.unread { background: rgba(193,125,75,0.06); }
    .notification-item.read {
      opacity: 0.58; background: #faf9f7;
    }
    .notification-item.read .notification-body strong,
    .notification-item.read .notification-body em {
      color: var(--color-text-2);
    }
    .notification-item:hover { background: var(--color-bg); }
    .notification-avatar {
      width: 34px; height: 34px; border-radius: 50%; flex-shrink: 0;
      background: var(--color-accent-l); display: flex; align-items: center;
      justify-content: center; font-weight: 600; font-size: 0.8rem;
      color: var(--color-text-2); overflow: hidden;
    }
    .notification-avatar img { width: 100%; height: 100%; object-fit: cover; }
    .notification-user-link,
    .notification-name-link { text-decoration: none; color: inherit; }
    .notification-name-link { font-weight: 700; color: var(--color-text); }
    .notification-name-link:hover { color: var(--color-accent); }
    .notification-body { flex: 1; min-width: 0; }
    .notification-body p { font-size: 0.85rem; line-height: 1.5; margin: 0; color: var(--color-text-2); }
    .notification-body em { font-style: normal; color: var(--color-accent); }
    .notification-body span { font-size: 0.72rem; color: var(--color-text-3); }
    .notification-detail-btn { flex-shrink: 0; align-self: center; }

    .admin-member-toolbar {
      display: flex; align-items: center; justify-content: space-between;
      gap: var(--space-2); margin-bottom: var(--space-2); flex-wrap: wrap;
    }
    .admin-member-search {
      display: flex; align-items: center; gap: 8px; min-width: min(420px, 100%);
      border: 1px solid var(--color-border); border-radius: var(--radius);
      padding: 8px 10px; background: #fff;
    }
    .admin-member-search i { width: 16px; height: 16px; color: var(--color-text-3); }
    .admin-member-search input {
      flex: 1; min-width: 0; border: 0; outline: 0; font: inherit; background: transparent;
    }
    .admin-member-status {
      display: inline-flex; align-items: center; width: max-content;
      padding: 2px 8px; border-radius: 999px; font-size: 0.76rem; font-weight: 700;
    }
    .admin-member-status.normal { background: #e8f5e9; color: #2e7d32; }
    .admin-member-status.banned { background: #ffebee; color: #c62828; }
    .admin-member-table td small {
      display: block; margin-top: 4px; color: var(--color-text-3); font-size: 0.72rem;
    }
    .admin-member-actions {
      display: flex; flex-direction: column; align-items: stretch; gap: 6px;
    }
    .admin-member-actions .btn {
      width: 100%; justify-content: center; white-space: nowrap;
    }

    .hamburger { display: none; background: none; border: none; color: var(--color-text); padding: 4px; }

    /* Main */
    #view { min-height: calc(100vh - 66px - 100px); }

    /* Footer */
    footer {
      border-top: 1px solid var(--color-border); padding: var(--space-4) 0;
      text-align: center; color: var(--color-text-3); font-size: 0.85rem;
      letter-spacing: 0.02em;
    }

    /* ========================================
       Component: Buttons
       ======================================== */
    .btn {
      display: inline-flex; align-items: center; gap: 6px;
      padding: 10px 20px; border-radius: var(--radius-sm);
      font-weight: 600; font-size: 0.9rem; border: none;
      transition: all 0.2s ease; letter-spacing: 0.01em;
    }
    .btn-primary {
      background: var(--color-accent); color: #fff;
      box-shadow: 0 2px 8px rgba(193,125,75,0.22);
    }
    .btn-primary:hover {
      background: var(--color-accent-h); color: #fff;
      box-shadow: 0 4px 14px rgba(193,125,75,0.32);
      transform: translateY(-1px);
    }
    .btn-outline {
      background: transparent; color: var(--color-accent);
      border: 1.5px solid var(--color-accent);
    }
    .btn-outline:hover { background: var(--color-accent-bg); }
    .btn-ghost { background: transparent; color: var(--color-text-2); }
    .btn-ghost:hover { background: var(--color-bg-alt); }
    .btn-sm { padding: 6px 14px; font-size: 0.82rem; }
    .btn-lg { padding: 14px 30px; font-size: 1rem; }
    .btn-danger {
      background: transparent; color: var(--color-danger);
      border: 1.5px solid var(--color-danger);
    }
    .btn-danger:hover { background: #fef5f4; }
    .btn:disabled { opacity: 0.45; cursor: not-allowed; }

    /* ========================================
       Component: Cards
       ======================================== */
    .card {
      background: var(--color-surface); border-radius: var(--radius-md);
      border: 1px solid var(--color-border); box-shadow: var(--shadow-sm);
      overflow: hidden; transition: box-shadow 0.3s ease, transform 0.3s ease;
    }
    .card:hover { box-shadow: var(--shadow-md); }
    .card-clickable:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
    .card-body { padding: var(--space-3); }

    /* ========================================
       Component: Tags / Badges
       ======================================== */
    .tag {
      display: inline-block; padding: 3px 10px; border-radius: 20px;
      font-size: 0.75rem; font-weight: 600; letter-spacing: 0.02em;
    }
    .tag-upcoming { background: #e8efe5; color: var(--color-tag-upcoming); }
    .tag-active    { background: #fdf3dc; color: var(--color-tag-active); }
    .tag-completed { background: #eee9e2; color: var(--color-tag-completed); }
    .tag-genre     { background: var(--color-accent-bg); color: var(--color-accent); }
    .tag-act-导读预热 { background: #fff3e0; color: #e65100; }
    .tag-act-精读分析 { background: #e3f2fd; color: #1565c0; }
    .tag-act-文艺放映 { background: #f3e5f5; color: #7b1fa2; }
    .tag-act-嘉宾分享 { background: #e0f2f1; color: #00695c; }
    .tag-act-圆桌讨论 { background: #fce4ec; color: #c62828; }
    .tag-act-线下活动 { background: #fff8e1; color: #f57f17; }
    .tag-act-签售征订 { background: #e8eaf6; color: #283593; }
    .tag-act-其他    { background: #eceff1; color: #546e7a; }

    /* ========================================
       Component: Forms
       ======================================== */
    .form-group { margin-bottom: var(--space-3); }
    .form-group label {
      display: block; margin-bottom: 6px; font-weight: 600;
      font-size: 0.88rem; color: var(--color-text-2);
    }
    .form-group input, .form-group textarea, .form-group select {
      width: 100%; padding: 10px 14px; border: 1px solid var(--color-border);
      border-radius: var(--radius-sm); background: var(--color-surface);
      color: var(--color-text); transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }
    .form-group input:focus, .form-group textarea:focus, .form-group select:focus {
      outline: none; border-color: var(--color-accent);
      box-shadow: 0 0 0 3px rgba(193,125,75,0.1);
    }
    .form-group textarea { min-height: 120px; resize: vertical; line-height: 1.6; }

    /* ========================================
       Component: Markdown Content
       ======================================== */
    .md-content { max-width: 65ch; }
    .md-content h2 { font-size: 1.45rem; margin: var(--space-4) 0 var(--space-2); }
    .md-content h3 { font-size: 1.15rem; margin: var(--space-3) 0 var(--space-1); }
    .md-content p { margin-bottom: var(--space-2); line-height: 1.8; }
    .md-content ul, .md-content ol { margin-bottom: var(--space-2); padding-left: var(--space-3); }
    .md-content li { margin-bottom: var(--space-1); }
    .md-content table { width: 100%; border-collapse: collapse; margin: var(--space-3) 0; font-size: 0.9rem; }
    .md-content th, .md-content td { padding: 10px 14px; border: 1px solid var(--color-border); text-align: left; }
    .md-content th { background: var(--color-bg-alt); font-weight: 600; }
    .md-content blockquote {
      border-left: 3px solid var(--color-accent-l); padding-left: var(--space-2);
      color: var(--color-text-2); margin: var(--space-2) 0;
    }
    .md-content img { max-width: 100%; border-radius: var(--radius-sm); margin: var(--space-2) 0; }
    .md-content a { color: var(--color-accent); text-decoration: underline; }
    .home-member-system-link {
      display: flex; align-items: center; justify-content: space-between;
      gap: var(--space-2); margin-top: var(--space-2);
      padding: 14px 16px; border: 1px solid var(--color-border);
      border-radius: var(--radius-sm); background: var(--color-bg);
      color: var(--color-text); font-weight: 700;
      transition: all 0.2s ease;
    }
    .home-member-system-link span {
      display: inline-flex; align-items: center; gap: 8px; min-width: 0;
    }
    .home-member-system-link i { width: 18px; height: 18px; flex: 0 0 auto; }
    .home-member-system-link:hover {
      border-color: var(--color-accent); color: var(--color-accent);
      transform: translateY(-1px); box-shadow: var(--shadow-sm);
    }
    .member-system-info-page { max-width: 1040px; }
    .member-system-info-content {
      max-width: none; overflow-x: auto;
    }
    .member-system-info-content h1:first-child { display: none; }

    /* ========================================
       Views: Shared
       ======================================== */
    .page-header {
      padding: var(--space-5) 0 var(--space-3);
      border-bottom: 1px solid var(--color-border); margin-bottom: var(--space-4);
    }
    .page-header h1 { margin-bottom: var(--space-1); }
    .page-header .subtitle { color: var(--color-text-2); font-size: 1rem; }

    /* Grid */
    .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-3); }
    .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
    .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-3); }
    .grid-6 { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }

    /* Admin */
    .admin-section-head {
      display: flex; align-items: flex-start; justify-content: space-between;
      gap: var(--space-2); margin-bottom: var(--space-2);
    }
    .admin-section-head h3 { margin-bottom: 4px; }
    .admin-section-head p, .admin-muted {
      color: var(--color-text-3); font-size: 0.88rem;
    }
    .admin-section-head span {
      color: var(--color-text-3); font-size: 0.84rem; white-space: nowrap;
    }
    .admin-inline-warning {
      display: flex; align-items: center; gap: 8px;
      padding: 10px 12px; border-radius: var(--radius-sm);
      background: var(--color-accent-bg); color: var(--color-text-2);
      border: 1px solid rgba(193,125,75,0.18); font-size: 0.9rem;
    }
    .admin-inline-warning i { width: 18px; height: 18px; color: var(--color-accent); }
    .admin-member-table-wrap {
      overflow-x: auto; border: 1px solid var(--color-border);
      border-radius: var(--radius-sm); background: var(--color-bg);
    }
    .admin-member-table {
      width: 100%; min-width: 1040px; border-collapse: collapse; font-size: 0.86rem;
      table-layout: fixed;
    }
    .admin-member-table th, .admin-member-table td {
      padding: 10px; border-bottom: 1px solid var(--color-border);
      text-align: left; vertical-align: top;
    }
    .admin-member-table th {
      color: var(--color-text-2); background: var(--color-bg-alt);
      font-weight: 700; white-space: nowrap;
    }
    .admin-member-table th:nth-child(1), .admin-member-table td:nth-child(1) { width: 30%; }
    .admin-member-table th:nth-child(2), .admin-member-table td:nth-child(2) { width: 15%; }
    .admin-member-table th:nth-child(3), .admin-member-table td:nth-child(3) { width: 14%; }
    .admin-member-table th:nth-child(4), .admin-member-table td:nth-child(4) { width: 28%; }
    .admin-member-table th:nth-child(5), .admin-member-table td:nth-child(5) { width: 13%; }
    .admin-member-table tr:last-child td { border-bottom: 0; }
    .admin-member-identity,
    .admin-member-meta {
      display: flex; flex-direction: column; gap: 4px; min-width: 0;
    }
    .admin-member-identity strong {
      font-size: 0.95rem; color: var(--color-text); line-height: 1.35;
    }
    .admin-member-identity span,
    .admin-member-meta span {
      color: var(--color-text-2); overflow-wrap: anywhere;
    }
    .admin-member-identity code {
      display: block; max-width: 100%; overflow-wrap: anywhere;
      font-size: 0.76rem; color: var(--color-text-3);
      background: var(--color-bg-alt); border: 1px solid var(--color-border);
      border-radius: var(--radius-sm); padding: 3px 6px; width: fit-content;
      max-width: 100%;
    }
    .admin-member-meta span {
      font-weight: 700; color: var(--color-text);
    }
    .admin-member-note-input {
      width: 100%; min-height: 86px; resize: vertical;
      padding: 8px 10px; border: 1px solid var(--color-border);
      border-radius: var(--radius-sm); background: var(--color-surface);
      color: var(--color-text); line-height: 1.5; font-size: 0.86rem;
    }
    .admin-member-note-input:focus {
      outline: none; border-color: rgba(193,125,75,0.52);
      box-shadow: 0 0 0 3px rgba(193,125,75,0.12);
    }

    /* Filters */
    .filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: var(--space-3); }
    .filter-chip {
      padding: 7px 18px; border-radius: 20px; font-size: 0.85rem; font-weight: 500;
      border: 1px solid var(--color-border); background: var(--color-surface);
      color: var(--color-text-2); cursor: pointer; transition: all 0.2s ease;
    }
    .filter-chip:hover, .filter-chip.active {
      border-color: var(--color-accent); color: var(--color-accent);
      background: var(--color-accent-bg);
    }

    /* Empty State */
    .empty-state {
      text-align: center; padding: var(--space-8) var(--space-3);
      color: var(--color-text-3);
    }
    .empty-state i { width: 48px; height: 48px; stroke-width: 1.5; margin-bottom: var(--space-2); opacity: 0.5; }

    /* ========================================
       View: Member Center
       ======================================== */
    .member-center { padding-top: var(--space-5); }
    .member-heading {
      display: flex; align-items: center; justify-content: space-between;
      gap: var(--space-3); margin-bottom: var(--space-4);
    }
    .member-heading-profile { display: flex; align-items: center; gap: var(--space-2); min-width: 0; }
    .member-avatar {
      width: 64px; height: 64px; border-radius: 50%; flex: 0 0 auto;
      background: var(--color-accent-bg); color: var(--color-accent);
      display: flex; align-items: center; justify-content: center;
      font-weight: 700; font-size: 1.35rem; overflow: hidden;
      border: 1px solid rgba(193,125,75,0.16);
    }
    .member-avatar img { width: 100%; height: 100%; object-fit: cover; }
    .member-heading h1 { font-size: 2rem; margin: 2px 0; word-break: break-word; }
    .member-heading p { color: var(--color-text-2); }
    .member-heading-actions { display: flex; align-items: center; gap: var(--space-1); flex-wrap: wrap; }
    .member-eyebrow {
      font-size: 0.78rem; font-weight: 700; color: var(--color-accent) !important;
    }
    .member-overview {
      display: grid; grid-template-columns: minmax(280px, 0.85fr) 1.15fr;
      gap: var(--space-3); margin-bottom: var(--space-3);
    }
    .member-current-card, .member-progress-panel, .member-stat-card {
      background: var(--color-surface); border: 1px solid var(--color-border);
      border-radius: var(--radius-md); box-shadow: var(--shadow-sm);
    }
    .member-current-card {
      display: flex; align-items: center; gap: var(--space-2); padding: var(--space-3);
      min-height: 144px;
    }
    .member-current-badge {
      width: 96px; height: 96px; flex: 0 0 auto; border-radius: 50%;
      background: var(--color-bg-alt); display: flex; align-items: center; justify-content: center;
      overflow: hidden; border: 1px solid var(--color-border);
    }
    .member-current-badge img { width: 100%; height: 100%; object-fit: cover; }
    .member-current-badge i { width: 34px; height: 34px; color: var(--color-accent); }
    .member-current-copy span, .member-stat-card span {
      display: block; font-size: 0.82rem; color: var(--color-text-3); margin-bottom: 2px;
    }
    .member-current-copy h2 { font-size: 1.45rem; margin-bottom: 2px; }
    .member-current-copy p { color: var(--color-text-2); }
    .member-progress-panel {
      padding: var(--space-3); display: flex; flex-direction: column; justify-content: center;
      min-height: 144px;
    }
    .member-progress-copy {
      display: flex; align-items: center; justify-content: space-between;
      gap: var(--space-2); margin-bottom: 10px; color: var(--color-text-2); font-size: 0.92rem;
    }
    .member-progress-copy strong { color: var(--color-accent); flex: 0 0 auto; }
    .member-progress-bar {
      height: 10px; border-radius: 999px; overflow: hidden;
      background: var(--color-bg-alt); border: 1px solid var(--color-border);
    }
    .member-progress-bar span {
      display: block; height: 100%; border-radius: inherit;
      background: linear-gradient(90deg, var(--color-accent), var(--color-accent-l));
    }
    .member-stats-grid {
      display: grid; grid-template-columns: repeat(4, 1fr);
      gap: var(--space-2); margin-bottom: var(--space-3);
    }
    .member-stat-card {
      min-height: 96px; padding: var(--space-2);
      display: flex; align-items: center; gap: var(--space-2);
    }
    .member-stat-card i {
      width: 34px; height: 34px; padding: 7px; border-radius: 50%;
      background: var(--color-accent-bg); color: var(--color-accent);
      flex: 0 0 auto;
    }
    .member-stat-card strong { display: block; font-size: 1.35rem; line-height: 1.2; }
    .member-stat-card em {
      display: block; margin-top: 4px; color: var(--color-accent);
      font-style: normal; font-size: 0.76rem; font-weight: 600; line-height: 1.3;
    }
    .member-main-grid {
      display: grid; grid-template-columns: minmax(0, 1fr) 340px;
      gap: var(--space-3); align-items: stretch;
    }
    .member-panel { height: 100%; }
    .member-panel .card-body {
      height: 100%; padding: var(--space-3);
      display: flex; flex-direction: column;
    }
    .member-panel-head {
      display: flex; align-items: center; justify-content: space-between;
      gap: var(--space-2); margin-bottom: var(--space-2);
    }
    .member-panel-head h3 { font-size: 1.1rem; }
    .member-panel-head span { color: var(--color-text-3); font-size: 0.86rem; }
    .member-badge-grid {
      display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
      gap: var(--space-2);
    }
    .member-badge-card {
      display: flex; align-items: center; gap: 12px;
      padding: 10px; border: 1px solid var(--color-border);
      border-radius: var(--radius-sm); background: var(--color-bg);
      min-width: 0; width: 100%; text-align: left; cursor: pointer;
      color: var(--color-text); transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
    }
    .member-badge-card:hover {
      border-color: rgba(193,125,75,0.35); background: var(--color-accent-bg);
      transform: translateY(-1px);
    }
    .member-badge-select-toolbar {
      display: flex; align-items: center; justify-content: space-between;
      gap: var(--space-2); margin-bottom: var(--space-2);
      padding: 10px 12px; border: 1px solid var(--color-border);
      border-radius: var(--radius-sm); background: var(--color-bg);
    }
    .member-badge-select-toolbar span {
      color: var(--color-text-2); font-size: 0.88rem; font-weight: 600;
    }
    .member-badge-save-row {
      display: flex; justify-content: flex-end;
      margin-top: var(--space-3);
    }
    .member-badge-select-card {
      display: grid; grid-template-columns: 20px 56px minmax(0, 1fr);
      align-items: center;
    }
    .member-badge-select-card input {
      width: 16px; height: 16px; accent-color: var(--color-accent);
    }
    .member-badge-select-card input:disabled { opacity: 0.65; }
    .member-badge-select-card label { min-width: 0; cursor: pointer; }
    .member-badge-preview-trigger {
      border: none; padding: 0; cursor: zoom-in;
    }
    .member-badge-image {
      width: 56px; height: 56px; border-radius: 50%; flex: 0 0 auto;
      display: flex; align-items: center; justify-content: center;
      background: var(--color-bg-alt); overflow: hidden; padding: 4px;
    }
    .member-badge-image img { width: 100%; height: 100%; object-fit: contain; }
    .member-badge-image i { width: 24px; height: 24px; color: var(--color-text-3); }
    .member-badge-card h4 {
      font-family: var(--font-sans); font-size: 0.92rem; line-height: 1.35;
      margin-bottom: 2px; word-break: break-word;
    }
    .member-badge-card p { color: var(--color-text-3); font-size: 0.78rem; }
    .member-more-badges { align-self: flex-start; margin-top: var(--space-2); }
    .badge-preview-overlay { background: rgba(18,14,12,0.58); }
    .badge-preview-modal {
      position: relative; max-width: min(620px, 92vw); padding: var(--space-3);
      max-height: 90vh; overflow-y: auto; animation: badgePreviewIn 0.24s ease-out;
    }
    .badge-flip-stage {
      width: min(440px, 72vw); aspect-ratio: 1;
      display: block; margin: 0 auto; padding: 0; border: 0;
      background: transparent; perspective: 1200px; cursor: default;
    }
    .badge-flip-stage.can-flip { cursor: pointer; }
    .badge-flip-inner {
      position: relative; display: block; width: 100%; height: 100%;
      transform-style: preserve-3d;
      transition: transform 0.62s cubic-bezier(0.2, 0.7, 0.2, 1);
    }
    .badge-flip-stage.is-flipped .badge-flip-inner { transform: rotateY(180deg); }
    .badge-flip-face {
      position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
      backface-visibility: hidden; -webkit-backface-visibility: hidden;
      border-radius: var(--radius-md);
    }
    .badge-flip-back { transform: rotateY(180deg); }
    .badge-flip-face img {
      width: 100%; height: 100%; aspect-ratio: 1; object-fit: contain;
      border-radius: var(--radius-md); pointer-events: none;
    }
    .badge-preview-caption { text-align: center; padding-top: var(--space-2); }
    .badge-preview-caption h3 { font-size: 1.25rem; }
    .badge-preview-caption p { color: var(--color-text-3); font-size: 0.88rem; }
    .badge-preview-caption .badge-preview-hint {
      margin-top: 4px; font-size: 0.78rem; color: var(--color-text-3);
    }
    .badge-riddle-panel {
      margin-top: var(--space-3); padding: var(--space-3);
      border: 1px solid var(--color-border); border-radius: var(--radius-sm);
      background: var(--color-bg);
    }
    .badge-riddle-title {
      display: flex; align-items: center; gap: 6px;
      margin-bottom: var(--space-2); color: var(--color-accent);
      font-size: 0.86rem; font-weight: 700;
    }
    .badge-riddle-title i { width: 16px; height: 16px; }
    .badge-riddle-poem {
      display: grid; gap: 4px; padding-left: 12px;
      border-left: 3px solid rgba(193,125,75,0.28);
      color: var(--color-text-2); font-size: 0.9rem; line-height: 1.65;
    }
    .badge-riddle-poem span { display: block; }
    .badge-riddle-form {
      margin-top: var(--space-2); display: grid; gap: 8px;
    }
    .badge-riddle-form label {
      font-size: 0.82rem; color: var(--color-text-3); font-weight: 600;
    }
    .badge-riddle-form > div {
      display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px;
      align-items: center;
    }
    .badge-riddle-form input {
      width: 100%; min-height: 38px; padding: 8px 10px;
      border: 1px solid var(--color-border); border-radius: var(--radius-sm);
      background: var(--color-surface); color: var(--color-text);
    }
    .badge-riddle-form input:focus {
      outline: none; border-color: rgba(193,125,75,0.52);
      box-shadow: 0 0 0 3px rgba(193,125,75,0.12);
    }
    .badge-riddle-form p, .badge-riddle-note {
      margin: 0; color: var(--color-text-3); font-size: 0.78rem; line-height: 1.5;
    }
    .badge-riddle-solved {
      display: flex; align-items: center; gap: 6px; margin-top: var(--space-2);
      color: #4f7d58; font-size: 0.86rem; font-weight: 700;
    }
    .badge-riddle-solved i { width: 16px; height: 16px; }
    .badge-preview-close {
      position: absolute; top: 10px; right: 10px; z-index: 1;
      width: 34px; height: 34px; border: none; border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      background: rgba(255,255,255,0.86); color: var(--color-text-2);
    }
    .badge-preview-close:hover { color: var(--color-accent); background: #fff; }
    .badge-preview-close i { width: 18px; height: 18px; }
    @keyframes badgePreviewIn {
      from { opacity: 0; transform: translateY(10px) scale(0.96); }
      to { opacity: 1; transform: translateY(0) scale(1); }
    }
    .member-unlocked-panel { grid-column: 1 / -1; }
    .member-ticket-summary-card {
      display: flex; flex-direction: column; gap: 10px;
      color: var(--color-text); height: 100%;
    }
    .member-ticket-summary-card > div {
      display: grid; grid-template-columns: 28px 1fr auto; align-items: center;
      gap: 10px; padding: 10px; border-radius: var(--radius-sm);
      background: var(--color-bg); border: 1px solid var(--color-border);
      transition: border-color 0.2s ease, background 0.2s ease;
    }
    .member-ticket-summary-card:hover > div {
      border-color: rgba(193,125,75,0.35); background: var(--color-accent-bg);
    }
    .member-ticket-summary-card i { width: 22px; height: 22px; color: var(--color-accent); }
    .member-ticket-summary-card span { color: var(--color-text-2); }
    .member-ticket-summary-card b {
      display: block; color: var(--color-text-2); font-weight: 600;
      line-height: 1.3;
    }
    .member-ticket-summary-card strong { font-size: 1.05rem; }
    .member-ticket-summary-card small {
      display: block; color: var(--color-text-3); font-size: 0.78rem; line-height: 1.3;
    }
    .member-ticket-summary-more {
      display: inline-flex; align-items: center; justify-content: flex-end; gap: 4px;
      margin-top: auto; color: var(--color-accent) !important; font-size: 0.86rem; font-weight: 600;
    }
    .member-ticket-summary-more i { width: 16px; height: 16px; }
    .member-ticket-page-grid {
      display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: var(--space-3); align-items: start;
    }
    .member-ticket-detail-list { display: flex; flex-direction: column; gap: 10px; }
    .member-ticket-detail-card {
      padding: 12px; border: 1px solid var(--color-border);
      border-radius: var(--radius-sm); background: var(--color-bg);
    }
    .member-ticket-detail-title {
      display: flex; align-items: center; justify-content: space-between;
      gap: var(--space-2); margin-bottom: 4px;
    }
    .member-ticket-detail-title h4 {
      font-family: var(--font-sans); font-size: 0.96rem; line-height: 1.35;
    }
    .member-ticket-detail-card p { color: var(--color-text-2); font-size: 0.84rem; margin-top: 3px; }
    .member-library-page .member-panel .card-body { gap: var(--space-3); }
    .member-library-tabs { margin-bottom: var(--space-3); }
    .member-library-grid {
      display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
      gap: var(--space-3);
    }
    .member-library-card,
    .member-library-slot-card,
    .member-library-empty-slot {
      border: 1px solid var(--color-border); border-radius: var(--radius-sm);
      background: var(--color-bg); color: var(--color-text);
    }
    .member-library-card {
      display: grid; grid-template-columns: 78px minmax(0, 1fr);
      gap: 12px; padding: 12px; text-decoration: none;
      transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
    }
    .member-library-card:hover {
      border-color: rgba(193,125,75,0.35); background: var(--color-accent-bg);
      transform: translateY(-1px);
    }
    .member-library-cover {
      width: 78px; aspect-ratio: 3 / 4; border-radius: var(--radius-sm);
      background: var(--color-bg-alt); overflow: hidden; display: flex;
      align-items: center; justify-content: center; color: var(--color-text-3);
      flex: 0 0 auto;
    }
    .member-library-cover img { width: 100%; height: 100%; object-fit: cover; }
    .member-library-cover i { width: 28px; height: 28px; }
    .member-library-card-body { min-width: 0; display: flex; flex-direction: column; gap: 4px; }
    .member-library-card-body strong {
      font-size: 0.98rem; line-height: 1.35; color: var(--color-text);
      word-break: break-word;
    }
    .member-library-card-body span,
    .member-library-card-body p {
      color: var(--color-text-2); font-size: 0.84rem; line-height: 1.45;
    }
    .member-library-card-body p { margin-top: 2px; }
    .member-library-card-body p.muted { color: var(--color-text-3); }
    .member-library-card-body small {
      margin-top: auto; color: var(--color-text-3); font-size: 0.76rem;
    }
    .member-library-slots { display: flex; flex-direction: column; gap: 12px; }
    .member-library-slots-want {
      display: grid; grid-template-columns: repeat(5, minmax(0, 1fr));
      gap: 12px; align-items: stretch;
    }
    .member-library-slot-card {
      display: grid; grid-template-columns: 34px 78px minmax(0, 1fr) 150px;
      gap: 12px; align-items: center; padding: 12px;
    }
    .member-library-slots-want .member-library-slot-card {
      display: flex; flex-direction: column; align-items: stretch;
      min-height: 350px;
    }
    .member-library-slots-want .member-library-cover {
      width: min(100%, 96px); margin: 0 auto;
    }
    .member-library-slots-want .member-library-card-body {
      flex: 1; text-align: center;
    }
    .member-library-slots-want .member-library-card-body strong {
      display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .member-library-slots-want .member-library-card-body p {
      display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical;
      overflow: hidden; text-align: justify; text-align-last: left;
    }
    .member-library-slots-want .member-library-slot-actions {
      margin-top: auto;
    }
    .member-library-slots-want .member-library-empty-slot {
      min-height: 350px; flex-direction: column; padding: 12px; text-align: center;
    }
    .member-library-slot-rank {
      width: 28px; height: 28px; border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      background: var(--color-accent-bg); color: var(--color-accent); font-weight: 800;
      font-size: 0.82rem;
    }
    .member-library-slot-actions {
      display: flex; flex-direction: column; gap: 8px; align-items: stretch;
    }
    .member-library-slot-actions .btn { justify-content: center; }
    .member-library-empty-slot {
      min-height: 92px; width: 100%; display: flex; align-items: center;
      justify-content: center; gap: 10px; color: var(--color-text-2);
      border-style: dashed; cursor: pointer; font-weight: 700;
      transition: border-color 0.2s ease, background 0.2s ease;
    }
    .member-library-empty-slot:hover {
      border-color: rgba(193,125,75,0.45); background: var(--color-accent-bg);
    }
    .member-library-empty-slot span {
      width: 26px; height: 26px; border-radius: 50%; display: inline-flex;
      align-items: center; justify-content: center; background: #fff;
      border: 1px solid var(--color-border); color: var(--color-accent);
    }
    .member-library-empty-slot i { width: 18px; height: 18px; }
    .member-library-url-row {
      display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px;
      align-items: center;
    }
    .member-library-form-preview {
      display: grid; grid-template-columns: 64px minmax(0, 1fr);
      gap: 12px; align-items: center; padding: 10px;
      border: 1px solid var(--color-border); border-radius: var(--radius-sm);
      background: var(--color-bg); margin-bottom: var(--space-2);
    }
    .member-library-form-preview .member-library-cover { width: 64px; }
    .member-library-form-preview strong { display: block; line-height: 1.35; }
    .member-library-form-preview span,
    .member-library-form-preview p { color: var(--color-text-2); font-size: 0.85rem; }
    .member-library-form-preview.empty {
      display: flex; min-height: 88px; justify-content: center; text-align: center;
      color: var(--color-text-3); border-style: dashed;
    }
    .member-library-form-preview.empty i { width: 26px; height: 26px; }
    .ticket-status {
      padding: 2px 8px; border-radius: 999px; font-size: 0.74rem;
      font-weight: 700; white-space: nowrap;
    }
    .ticket-status-success { background: #e8efe5; color: var(--color-success); }
    .ticket-status-muted { background: #eee9e2; color: var(--color-text-2); }
    .ticket-status-danger { background: #fef5f4; color: var(--color-danger); }
    .member-empty-inline {
      min-height: 180px; border: 1px dashed var(--color-border);
      border-radius: var(--radius-sm); background: var(--color-bg);
      display: flex; flex-direction: column; align-items: center; justify-content: center;
      text-align: center; padding: var(--space-3); color: var(--color-text-3);
    }
    .member-empty-inline.compact { min-height: 132px; }
    .member-empty-inline i { width: 34px; height: 34px; margin-bottom: 10px; opacity: 0.75; }
    .member-empty-inline p { max-width: 34ch; font-size: 0.9rem; }

    /* ========================================
       View: Reading Circle
       ======================================== */
    .reading-circle-page { padding-top: var(--space-5); }
    .reading-circle-controls {
      display: flex; align-items: center; justify-content: space-between;
      gap: var(--space-2); margin-bottom: var(--space-3); flex-wrap: wrap;
    }
    .reading-circle-tabs { margin-bottom: 0; }
    .reading-circle-tabs a.tab { display: inline-flex; color: var(--color-text-2); }
    .reading-circle-tabs a.tab.active { color: var(--color-accent); }
    .reading-search-form {
      display: flex; gap: 4px; align-items: center;
    }
    .reading-search-form input {
      width: 200px; padding: 6px 10px; border: 1px solid var(--color-border);
      border-radius: var(--radius-sm); font-size: 0.85rem;
      background: var(--color-bg); color: var(--color-text);
    }
    .reading-search-form input:focus { outline: none; border-color: var(--color-accent); }
    .reading-search-results { margin-bottom: var(--space-4); }
    .search-results-inner { display: flex; flex-direction: column; gap: var(--space-3); }
    .reading-search-results-head {
      display: flex; align-items: center; justify-content: space-between;
      margin-bottom: var(--space-2); font-size: 0.9rem; color: var(--color-text-2);
    }

    /* 关注按钮 */
    .btn-follow { transition: all 0.2s; }
    .btn-follow.following { background: var(--color-accent-bg); color: var(--color-accent); border-color: var(--color-accent); }
    .btn-follow.mutual { background: #e8f5e9; color: #2e7d32; border-color: #a5d6a7; }

    /* 好友列表 */
    .friend-list-page { max-width: 1080px; }
    .friend-search-card { margin-bottom: var(--space-4); }
    .friend-search-form label {
      display: block; font-weight: 700; font-size: 0.95rem;
      margin-bottom: var(--space-2);
    }
    .friend-search-row { display: flex; gap: 10px; align-items: center; }
    .friend-search-row input {
      flex: 1; min-width: 0; border: 1px solid var(--color-border);
      border-radius: var(--radius); padding: 10px 12px; font: inherit;
      background: #fff;
    }
    .friend-search-row input:focus { outline: none; border-color: var(--color-accent); }
    .friend-search-results { margin-top: var(--space-3); }
    .friend-search-head {
      color: var(--color-text-2); font-size: 0.86rem;
      margin-bottom: 4px;
    }
    .friend-sections { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
    .friend-section h3 {
      display: flex; align-items: baseline; gap: 8px;
      font-size: 1rem; margin-bottom: var(--space-2);
    }
    .friend-section h3 span { font-size: 0.78rem; color: var(--color-text-3); font-weight: 400; }
    .friend-row {
      display: flex; align-items: center; gap: 12px; padding: 10px 0;
      border-bottom: 1px solid var(--color-border); text-decoration: none; color: inherit;
      transition: background 0.15s;
    }
    .friend-row:hover { background: var(--color-bg); }
    .friend-avatar {
      width: 40px; height: 40px; border-radius: 50%; flex-shrink: 0;
      background: var(--color-accent-l); display: flex; align-items: center;
      justify-content: center; font-weight: 700; color: var(--color-text-2);
      overflow: hidden; font-size: 1rem;
    }
    .friend-avatar img { width: 100%; height: 100%; object-fit: cover; }
    .friend-info { flex: 1; min-width: 0; }
    .friend-info strong { display: block; font-size: 0.9rem; }
    .friend-info > div { display: flex; align-items: center; gap: 8px; margin-top: 2px; flex-wrap: wrap; }
    .friend-city { font-size: 0.75rem; color: var(--color-text-3); display: inline-flex; align-items: center; gap: 2px; }
    .friend-city i { width: 12px; height: 12px; }
    .reading-login-tip { margin-bottom: var(--space-3); }
    .reading-login-tip .card-body {
      display: flex; align-items: center; justify-content: space-between;
      gap: var(--space-2);
    }
    .reading-login-tip p { color: var(--color-text-2); }

    /* 贡献榜单 */
    .leaderboard-page { padding-top: var(--space-5); }
    .leaderboard-grid {
      display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4);
      max-width: 1080px;
    }
    .leaderboard-col-title {
      font-size: 1rem; font-weight: 700; margin-bottom: var(--space-2);
      padding-bottom: var(--space-1); border-bottom: 2px solid var(--color-accent);
      color: var(--color-text);
    }
    .leaderboard-row {
      display: flex; align-items: center; gap: 10px; padding: 10px 0;
      border-bottom: 1px solid var(--color-border); text-decoration: none; color: inherit;
    }
    .leaderboard-row:hover { background: var(--color-bg); }
    .leaderboard-rank { width: 32px; text-align: center; font-size: 1.2rem; flex-shrink: 0; }
    .leaderboard-rank-num { font-size: 0.95rem; font-weight: 700; color: var(--color-text-3); }
    .leaderboard-avatar {
      width: 36px; height: 36px; border-radius: 50%; flex-shrink: 0;
      background: var(--color-accent-l); display: flex; align-items: center;
      justify-content: center; font-weight: 700; color: var(--color-text-2);
      overflow: hidden; font-size: 0.9rem;
    }
    .leaderboard-avatar img { width: 100%; height: 100%; object-fit: cover; }
    .leaderboard-info { flex: 1; min-width: 0; }
    .leaderboard-info strong { display: block; font-size: 0.88rem; line-height: 1.3; }
    .leaderboard-info .member-level-badge { margin-top: 1px; }
    .leaderboard-score { text-align: right; flex-shrink: 0; font-size: 1.05rem; font-weight: 700; color: var(--color-accent); }
    .leaderboard-score span { display: block; font-size: 0.68rem; font-weight: 400; color: var(--color-text-3); }

    .reading-circle-layout {
      display: grid; grid-template-columns: minmax(280px, 340px) minmax(0, 1fr);
      gap: var(--space-4); align-items: flex-start;
    }
    .reading-circle-side {
      position: sticky; top: 88px; min-width: 0;
    }
    .reading-circle-feed {
      width: 100%; max-width: 720px; min-width: 0; justify-self: end;
    }
    .reading-circle-calendar-card .card-body { padding: var(--space-3); }
    .reading-circle-calendar-stats {
      display: grid; grid-template-columns: repeat(2, 1fr);
      gap: 10px; margin: var(--space-2) 0 var(--space-3);
    }
    .reading-circle-calendar-stats > div {
      border: 1px solid var(--color-border); border-radius: var(--radius-sm);
      background: var(--color-bg); padding: 10px 12px;
    }
    .reading-circle-calendar-stats span {
      display: block; color: var(--color-text-3); font-size: 0.78rem;
      margin-bottom: 2px;
    }
    .reading-circle-calendar-stats strong {
      display: block; color: var(--color-text); font-size: 1.15rem;
      line-height: 1.2;
    }
    .reading-circle-calendar { max-width: 100%; }
    .reading-circle-calendar .calendar-header {
      justify-content: center; margin-bottom: 6px;
    }
    .reading-post-list { display: flex; flex-direction: column; gap: var(--space-3); }
    .reading-post-card {
      border-color: var(--reading-mood-border, var(--color-border));
      border-left: 4px solid var(--reading-mood-border, var(--color-border));
    }
    .reading-post-card .card-body { padding: var(--space-3); }
    .reading-post-head {
      display: flex; align-items: center; justify-content: space-between;
      gap: var(--space-2); margin-bottom: var(--space-2);
    }
    .reading-post-user { display: flex; align-items: flex-start; gap: 12px; min-width: 0; }
    .reading-post-username {
      display: block; color: var(--color-text); text-decoration: none;
      font-weight: 600; line-height: 1.35;
    }
    .reading-post-username:hover { color: var(--color-accent); text-decoration: underline; }
    .reading-post-user .reading-post-time {
      display: block; color: var(--color-text-3); font-size: 0.78rem;
    }
    .member-level-badge {
      display: inline-block; font-size: 0.64rem; font-weight: 600; white-space: nowrap;
      padding: 1px 4px; margin-top: 1px; border-radius: 5px;
      background: linear-gradient(135deg, #c17d4b18, #c17d4b08);
      color: #b0703e; border: 1px solid #c17d4b28; line-height: 1.35;
    }

    /* 用户主页 */
    .user-profile-page { max-width: 1080px; }
    .user-profile-back {
      display: inline-flex; align-items: center; gap: 4px;
      margin-bottom: var(--space-3); color: var(--color-text-2);
      text-decoration: none; font-size: 0.9rem;
    }
    .user-profile-back:hover { color: var(--color-accent); }
    .user-profile-back i { width: 16px; height: 16px; }
    .user-profile-card { margin-bottom: var(--space-3); }
    .user-profile-head { display: flex; gap: var(--space-3); align-items: flex-start; }
    .user-profile-avatar {
      width: 72px; height: 72px; border-radius: 50%; flex-shrink: 0;
      background: var(--color-accent-l); display: flex; align-items: center;
      justify-content: center; font-size: 1.6rem; font-weight: 700;
      color: var(--color-text-2); overflow: hidden;
    }
    .user-profile-avatar img { width: 100%; height: 100%; object-fit: cover; }
    .user-profile-info h2 { font-size: 1.4rem; margin-bottom: 4px; }
    .user-profile-level { display: flex; align-items: baseline; gap: 8px; margin-bottom: var(--space-2); }
    .user-tier { font-size: 0.82rem; color: var(--color-text-3); }
    .user-stats { display: flex; gap: var(--space-3); }
    .user-stat { text-align: center; }
    .user-stat span { display: block; font-size: 0.75rem; color: var(--color-text-3); }
    .user-stat strong { font-size: 1.2rem; color: var(--color-text); }
    .user-badges-card { margin-bottom: var(--space-4); }
    .user-badges-card h3 { font-size: 1rem; margin-bottom: var(--space-2); }
    .user-badges-grid { display: flex; gap: 10px; flex-wrap: wrap; }
    .user-badge-item {
      width: 52px; height: 52px; border-radius: 50%;
      background: var(--color-bg); border: 1px solid var(--color-border);
      display: flex; align-items: center; justify-content: center;
      overflow: hidden; cursor: pointer; padding: 4px;
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .user-badge-item:hover { transform: scale(1.1); box-shadow: 0 2px 12px rgba(0,0,0,0.1); }
    .user-badge-item img { width: 100%; height: 100%; object-fit: contain; }
    .user-badge-item i { width: 22px; height: 22px; color: var(--color-text-3); }
    .user-no-badges { color: var(--color-text-3); font-size: 0.85rem; }
    .user-profile-actions { flex-shrink: 0; margin-left: auto; }
    .user-profile-extra { margin-top: var(--space-2); padding-top: var(--space-2); border-top: 1px solid var(--color-border); }
    .user-bio { color: var(--color-text-2); font-size: 0.9rem; line-height: 1.7; margin-bottom: var(--space-1); }
    .user-meta { display: flex; gap: var(--space-3); flex-wrap: wrap; }
    .user-meta span { display: inline-flex; align-items: center; gap: 4px; font-size: 0.82rem; color: var(--color-text-3); }
    .user-meta i { width: 14px; height: 14px; }
    .user-library-card { margin-bottom: var(--space-4); }
    .user-library-title,
    .user-library-group-head {
      display: flex; align-items: baseline; justify-content: space-between;
      gap: var(--space-2);
    }
    .user-library-title { margin-bottom: var(--space-3); }
    .user-library-title h3 { font-size: 1rem; }
    .user-library-title span,
    .user-library-group-head span,
    .user-library-more {
      color: var(--color-text-3); font-size: 0.82rem;
    }
    .user-library-group + .user-library-group {
      margin-top: var(--space-3); padding-top: var(--space-3);
      border-top: 1px solid var(--color-border);
    }
    .user-library-group-head { margin-bottom: var(--space-2); }
    .user-library-group-head h4 {
      font-family: var(--font-sans); font-size: 0.96rem;
    }
    .user-library-grid {
      display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
      gap: 10px;
    }
    .user-library-cover-grid {
      display: flex; flex-wrap: nowrap; gap: 12px;
      overflow-x: auto; padding-bottom: 2px;
      scrollbar-width: thin;
    }
    .user-library-five-grid {
      grid-template-columns: repeat(5, minmax(0, 1fr));
      align-items: stretch;
    }
    .user-library-three-grid {
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 14px; align-items: stretch;
    }
    .user-library-book {
      display: grid; grid-template-columns: 52px minmax(0, 1fr);
      gap: 10px; padding: 9px; border: 1px solid var(--color-border);
      border-radius: var(--radius-sm); background: var(--color-bg);
      color: var(--color-text); text-decoration: none;
      transition: background 0.2s ease, border-color 0.2s ease;
    }
    .user-library-five-grid .user-library-book {
      grid-template-columns: 1fr; align-content: start;
      min-height: 230px;
    }
    .user-library-three-grid .user-library-book {
      grid-template-columns: 1fr; align-content: start;
      min-height: 300px; padding: 12px;
    }
    .user-library-book-cover-only {
      display: block; padding: 6px; width: 100%;
      flex: 0 0 74px;
    }
    .user-library-book:hover {
      background: var(--color-accent-bg); border-color: rgba(193,125,75,0.35);
    }
    .user-library-cover {
      width: 52px; aspect-ratio: 3 / 4; border-radius: var(--radius-sm);
      background: var(--color-bg-alt); overflow: hidden; display: flex;
      align-items: center; justify-content: center; color: var(--color-text-3);
    }
    .user-library-cover img { width: 100%; height: 100%; object-fit: cover; }
    .user-library-cover i { width: 22px; height: 22px; }
    .user-library-book-cover-only .user-library-cover {
      width: 100%; margin: 0 auto;
    }
    .user-library-five-grid .user-library-cover {
      width: min(100%, 86px); margin: 0 auto;
    }
    .user-library-three-grid .user-library-cover {
      width: min(100%, 118px); margin: 0 auto;
    }
    .user-library-five-grid .user-library-book > div { text-align: center; }
    .user-library-three-grid .user-library-book > div { text-align: center; }
    .user-library-book strong {
      display: block; font-size: 0.88rem; line-height: 1.35;
      margin-bottom: 2px; word-break: break-word;
    }
    .user-library-five-grid .user-library-book strong,
    .user-library-three-grid .user-library-book strong,
    .user-library-five-grid .user-library-book p {
      display: -webkit-box; -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .user-library-five-grid .user-library-book strong { -webkit-line-clamp: 2; }
    .user-library-five-grid .user-library-book p { -webkit-line-clamp: 3; }
    .user-library-three-grid .user-library-book strong { -webkit-line-clamp: 2; }
    .user-library-book span,
    .user-library-book p {
      display: block; color: var(--color-text-2);
      font-size: 0.78rem; line-height: 1.45;
    }
    .user-library-book p { margin-top: 3px; color: var(--color-text-3); }
    .user-library-five-grid .user-library-book p,
    .user-library-three-grid .user-library-book p {
      text-align: justify; text-align-last: left;
    }
    .user-library-more { margin-top: 8px; }

    /* 头像编辑 */
    .avatar-edit-row { display: flex; gap: var(--space-2); align-items: flex-start; }
    .avatar-edit-preview {
      width: 72px; height: 72px; border-radius: 50%; flex-shrink: 0;
      background: var(--color-bg); border: 1px solid var(--color-border);
      display: flex; align-items: center; justify-content: center; overflow: hidden;
    }
    .avatar-edit-preview img { width: 100%; height: 100%; object-fit: cover; }
    .avatar-edit-preview i { width: 28px; height: 28px; color: var(--color-text-3); }
    .avatar-edit-row input[type="file"] { font-size: 0.85rem; margin-bottom: 8px; }

    .reading-post-avatar {
      width: 56px; height: 56px; border-radius: 50%; flex: 0 0 auto;
      display: flex; align-items: center; justify-content: center;
      background: var(--color-accent-bg); color: var(--color-accent);
      font-weight: 700; font-size: 1.35rem; overflow: hidden;
    }
    .reading-post-avatar img { width: 100%; height: 100%; object-fit: cover; }
    .reading-post-tags { display: flex; align-items: center; justify-content: flex-end; gap: 6px; flex-wrap: wrap; }
    .reading-post-main { display: flex; gap: var(--space-2); align-items: flex-start; }
    .reading-post-cover {
      width: 86px; aspect-ratio: 3 / 4; flex: 0 0 auto;
      border-radius: var(--radius-sm); overflow: hidden; background: var(--color-bg-alt);
      border: 1px solid var(--color-border);
    }
    .reading-post-cover img { width: 100%; height: 100%; object-fit: cover; }
    .reading-post-body { min-width: 0; flex: 1; }
    .reading-post-body h3 {
      font-family: var(--font-serif); font-size: 1.15rem; margin-bottom: 2px;
      word-break: break-word; overflow-wrap: anywhere;
    }
    .reading-post-title-author {
      color: var(--color-text-2); font-family: var(--font-sans);
      font-size: 0.92rem; font-weight: 500;
    }
    .reading-post-title-row {
      display: flex; align-items: baseline; justify-content: space-between;
      gap: var(--space-2); flex-wrap: wrap;
    }
    .reading-post-title-row h3 { margin-bottom: 0; flex: 1; min-width: 0; }
    .reading-post-rating {
      display: inline-flex; align-items: baseline; gap: 3px;
      padding: 2px 8px; white-space: nowrap; flex-shrink: 0;
      background: rgba(193, 125, 75, 0.1); border-radius: var(--radius-sm);
    }
    .reading-post-rating > span { font-size: 0.72rem; color: var(--color-text-3); }
    .reading-post-rating > strong {
      font-family: var(--font-sans); font-size: 1rem; font-weight: 700;
      color: #c17d4b;
    }
    .reading-post-content-block {
      margin-top: 12px; padding-top: 10px; border-top: 1px solid var(--color-border);
    }
    .reading-post-content-block.quote {
      position: relative; margin-top: 14px; margin-left: 10px;
      padding: 8px 12px 8px 16px; border-top: none;
      border-left: 3px solid var(--reading-mood-border, var(--color-accent-l));
      background: color-mix(in srgb, var(--color-bg-alt) 62%, transparent);
    }
    .reading-post-content-block > span {
      display: block; color: var(--color-accent); font-size: 0.78rem;
      font-weight: 700; margin-bottom: 4px;
    }
    .reading-post-content-block.quote > span { color: var(--color-text-3); }
    .reading-post-content-block.quote .reading-post-content {
      color: var(--color-text-3); font-family: var(--font-serif);
      font-size: 0.95rem; line-height: 1.9;
    }
    .reading-post-content {
      color: var(--color-text-2); white-space: pre-wrap;
      line-height: 1.85; margin-top: 0; padding-right: 4px;
      overflow-wrap: anywhere; word-break: break-word;
    }
    .reading-post-content-block.is-collapsed .reading-post-content {
      display: -webkit-box; -webkit-box-orient: vertical;
      -webkit-line-clamp: var(--reading-post-clamp-lines, 6);
      overflow: hidden;
    }
    .reading-post-expand {
      display: inline-flex; align-items: center; width: fit-content;
      margin-top: 6px; padding: 0; border: none; background: transparent;
      color: var(--color-accent); font-size: 0.82rem; font-weight: 700;
      cursor: pointer;
    }
    .reading-post-expand:hover { text-decoration: underline; }
    .reading-post-foot {
      display: flex; align-items: center; gap: var(--space-2);
      margin-top: var(--space-2); padding-top: var(--space-2);
      border-top: 1px solid var(--color-border); color: var(--color-text-3);
      font-size: 0.85rem;
    }
    .btn-like, .btn-comment-toggle {
      display: inline-flex; align-items: center; gap: 4px;
      padding: 4px 6px; border: none; background: none; cursor: pointer;
      color: var(--color-text-3); font-size: 0.85rem; border-radius: 6px;
      transition: color 0.2s, background 0.2s;
    }
    .btn-like:hover, .btn-comment-toggle:hover { background: rgba(0,0,0,0.04); color: var(--color-text-2); }
    .btn-like i, .btn-comment-toggle i { width: 15px; height: 15px; }
    .btn-like.liked { color: #e74c3c; }
    .btn-like.liked i { fill: #e74c3c; }
    .reading-post-foot i { width: 15px; height: 15px; }

    /* 评论区 */
    .reading-post-comments {
      margin-top: var(--space-1); padding-top: var(--space-2);
      border-top: 1px solid var(--color-border);
    }
    .comments-loading, .comments-empty, .comments-error {
      text-align: center; padding: var(--space-2); color: var(--color-text-3); font-size: 0.85rem;
    }
    .comment-item {
      display: flex; gap: 10px; padding: 10px 0;
      border-bottom: 1px solid rgba(0,0,0,0.04);
    }
    .comment-avatar {
      width: 28px; height: 28px; border-radius: 50%; flex-shrink: 0;
      background: var(--color-accent-l); color: var(--color-text-2);
      display: flex; align-items: center; justify-content: center;
      font-size: 0.72rem; font-weight: 600; overflow: hidden;
    }
    .comment-avatar img { width: 100%; height: 100%; object-fit: cover; }
    .comment-body { flex: 1; min-width: 0; position: relative; }
    .comment-head { display: flex; align-items: baseline; gap: 8px; margin-bottom: 2px; }
    .comment-head strong { font-size: 0.84rem; }
    .comment-head span { font-size: 0.72rem; color: var(--color-text-3); }
    .comment-text { color: var(--color-text-2); font-size: 0.88rem; line-height: 1.6; white-space: pre-wrap; margin: 0; }
    .btn-comment-delete {
      position: absolute; top: 0; right: 0;
      padding: 2px 4px; border: none; background: none; cursor: pointer;
      color: var(--color-text-3); font-size: 0.72rem; opacity: 0;
      transition: opacity 0.2s, color 0.2s;
    }
    .comment-item:hover .btn-comment-delete { opacity: 1; }
    .btn-comment-delete:hover { color: #e74c3c; }
    .btn-comment-delete i { width: 13px; height: 13px; }
    .comment-form {
      display: flex; gap: 8px; align-items: flex-start; margin-top: var(--space-2);
    }
    .comment-form textarea {
      flex: 1; min-width: 0; padding: 8px 10px;
      border: 1px solid var(--color-border); border-radius: var(--radius-sm);
      font-size: 0.85rem; line-height: 1.5; resize: vertical;
      background: var(--color-bg); color: var(--color-text);
    }
    .comment-form textarea:focus { outline: none; border-color: var(--color-accent); }
    .comment-form .btn { flex-shrink: 0; align-self: flex-end; }

    /* 嵌套回复 */
    .comment-reply { margin-left: 38px; border-left: 2px solid var(--color-border); padding-left: 12px; }
    .comment-reply .comment-avatar { width: 24px; height: 24px; font-size: 0.65rem; }
    .comment-actions { display: flex; gap: 8px; align-items: center; margin-top: 4px; }
    .btn-comment-reply {
      font-size: 0.75rem; color: var(--color-text-3); border: none; background: none;
      cursor: pointer; padding: 2px 4px; border-radius: 4px;
    }
    .btn-comment-reply:hover { color: var(--color-accent); background: var(--color-accent-bg); }
    .comment-reply-to { font-size: 0.78rem; color: var(--color-accent); font-weight: 500; }
    .reply-form-inline { margin-left: 38px; margin-top: 4px; margin-bottom: 8px; }

    .reading-post-actions {
      display: flex; align-items: center; gap: 8px; margin-left: auto; flex-wrap: wrap;
    }
    .reading-post-form-actions { display: flex; justify-content: flex-end; }
    .reading-rating-group .form-hint {
      display: block; margin-top: 4px; font-size: 0.78rem; color: var(--color-text-3);
    }
    .reading-douban-fetch-row {
      display: grid; grid-template-columns: minmax(0, 1fr) auto;
      gap: 8px; align-items: center;
    }
    .reading-douban-preview {
      min-height: 92px; display: flex; align-items: center; gap: 12px;
      padding: 12px; margin-bottom: var(--space-3);
      border: 1px dashed var(--color-border); border-radius: var(--radius-sm);
      background: var(--color-bg); color: var(--color-text-3);
    }
    .reading-douban-preview img {
      width: 54px; aspect-ratio: 3 / 4; object-fit: cover;
      border-radius: 6px; border: 1px solid var(--color-border);
    }
    .reading-douban-preview i { width: 28px; height: 28px; flex: 0 0 auto; }
    .reading-douban-preview strong {
      display: block; color: var(--color-text); font-family: var(--font-serif);
      font-size: 1rem; line-height: 1.35;
    }
    .reading-douban-preview span { display: block; color: var(--color-text-2); font-size: 0.84rem; margin-top: 2px; }
    .reading-mood-swatches .mood-swatch {
      appearance: none;
    }

    /* Tabs */
    .tabs { display: flex; gap: 0; border-bottom: 2px solid var(--color-border); margin-bottom: var(--space-4); }
    .tab {
      padding: 10px 20px; font-weight: 600; font-size: 0.9rem; color: var(--color-text-2);
      border: none; background: none; cursor: pointer;
      border-bottom: 2px solid transparent; margin-bottom: -2px; transition: all 0.2s ease;
    }
    .tab:hover { color: var(--color-accent); }
    .tab.active { color: var(--color-accent); border-bottom-color: var(--color-accent); }

    /* ========================================
       Calendar
       ======================================== */
    .calendar { width: 100%; max-width: 380px; margin: 0 auto; }
    .calendar-header {
      display: flex; align-items: center; justify-content: space-between;
      margin-bottom: var(--space-2);
    }
    .calendar-header h4 { font-family: var(--font-sans); font-size: 1rem; font-weight: 600; }
    .calendar-grid {
      display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px;
      text-align: center; margin: 0 auto;
    }
    .calendar-grid .day-name {
      font-size: 0.75rem; color: var(--color-text-3); padding: 8px 0;
      font-weight: 600; letter-spacing: 0.02em;
    }
    .calendar-grid .day {
      aspect-ratio: 1; display: flex; align-items: center; justify-content: center;
      border-radius: 6px; font-size: 0.88rem; font-weight: 500;
      transition: all 0.15s ease;
      position: relative;
    }
    .calendar-grid .day.other-month { color: #d8d3cb; }
    /* Today: square border highlight */
    .calendar-grid .day.today {
      border: 2.5px solid var(--color-accent);
      color: var(--color-accent); font-weight: 700;
    }
    .calendar-grid .day.future { color: var(--color-text-3); }
    /* Checked: large mood-color circle wrapping the number */
    .calendar-grid .day.checked {
      cursor: pointer;
    }
    .calendar-grid .day.checked::after {
      content: '';
      position: absolute; top: 50%; left: 50%;
      transform: translate(-50%, -50%);
      width: 75%; height: 75%;
      border-radius: 50%;
      background: var(--mood-dot, var(--color-accent));
      z-index: 0;
    }
    .calendar-grid .day.checked span {
      position: relative; z-index: 1;
      color: #fff; font-weight: 600;
    }
    .calendar-grid .day.checked:hover::after {
      transform: translate(-50%, -50%) scale(1.12);
    }
    .calendar-grid .day.checked:hover {
      box-shadow: var(--shadow-sm);
    }

    /* Mood color swatches */
    .mood-swatches {
      display: flex; gap: 8px; flex-wrap: wrap; margin-top: 2px;
    }
    .mood-swatch {
      width: 32px; height: 32px; border-radius: 50%;
      border: 2px solid var(--color-border); cursor: pointer;
      transition: all 0.2s ease; position: relative;
    }
    .mood-swatch:hover { transform: scale(1.15); }
    .mood-swatch.selected {
      border-color: var(--color-text);
      box-shadow: 0 0 0 3px rgba(0,0,0,0.08);
    }
    .mood-swatch.none {
      background: transparent;
      border: 2px dashed var(--color-border);
    }
    .mood-swatch.none::after {
      content: '';
      position: absolute; top: 50%; left: 50%;
      width: 14px; height: 1.5px;
      background: var(--color-text-3);
      transform: translate(-50%, -50%) rotate(-45deg);
    }

    /* ========================================
       Book Card
       ======================================== */
    .book-card { display: flex; flex-direction: column; }
    .book-card .cover {
      aspect-ratio: 3/4; background: var(--color-bg-alt);
      display: flex; align-items: center; justify-content: center;
      font-family: var(--font-serif); font-size: 1.2rem; color: var(--color-text-3);
      position: relative; overflow: hidden;
    }
    .book-card .cover img { width: 100%; height: 100%; object-fit: cover; position: absolute; top: 0; left: 0; }
    .book-card .cover .status-badge {
      position: absolute; top: 4px; right: 4px;
      padding: 2px 6px; border-radius: 8px; font-size: 0.6rem; font-weight: 700;
      font-family: var(--font-sans); backdrop-filter: blur(4px);
    }
    .book-card .card-body { flex: 1; display: flex; flex-direction: column; padding: 10px; }
    .book-card .card-body h3 { font-size: 0.85rem; margin-bottom: 3px; line-height: 1.3; }
    .book-card .card-body .book-meta { font-size: 0.72rem; color: var(--color-text-2); margin-bottom: 2px; }
    .book-card .card-body .book-meta.muted { color: var(--color-text-3); }
    .book-card .card-body .meta { margin-top: auto; display: flex; gap: 4px; flex-wrap: wrap; }

    /* Event Card */
    .event-card { display: flex; flex-direction: column; }
    .event-card .poster {
      aspect-ratio: 16/10; background: var(--color-bg-alt);
      display: flex; align-items: center; justify-content: center;
      color: var(--color-text-3); position: relative; overflow: hidden;
    }
    .event-card .poster img { width: 100%; height: 100%; object-fit: cover; position: absolute; top: 0; left: 0; }
    .event-card .cat-tag {
      display: inline-block; font-size: 0.72rem; padding: 2px 8px;
      border-radius: 4px; font-weight: 500;
      background: var(--color-bg-alt); color: var(--color-text-2);
      border: 1px solid var(--color-border);
    }
    .event-card .card-body h3 { font-size: 1rem; }
    .event-card .info-row {
      display: flex; align-items: center; gap: 6px;
      color: var(--color-text-2); font-size: 0.85rem; margin-top: 5px;
    }
    .event-card .info-row i { width: 15px; height: 15px; }

    /* ========================================
       Visual Form Builder — JSONB fields
       ======================================== */
    .builder-section { margin-bottom: var(--space-3); }
    .builder-section > label {
      display: block; margin-bottom: 6px; font-weight: 600;
      font-size: 0.88rem; color: var(--color-text-2);
    }
    .builder-items { display: flex; flex-direction: column; gap: var(--space-1); }
    .builder-item {
      background: var(--color-bg); border-radius: var(--radius-sm);
      padding: var(--space-2); border: 1px solid var(--color-border);
    }
    .builder-item .b-row {
      display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 6px; align-items: center;
    }
    .builder-item .b-row:last-child { margin-bottom: 0; }
    .builder-item input, .builder-item select {
      padding: 6px 10px; border: 1px solid var(--color-border);
      border-radius: 6px; font-size: 0.82rem; background: var(--color-surface);
      color: var(--color-text); flex: 1; min-width: 80px; font-family: inherit;
    }
    .builder-item input:focus, .builder-item select:focus {
      outline: none; border-color: var(--color-accent);
    }
    .builder-item .btn-remove-row {
      background: none; border: none; color: var(--color-text-3);
      cursor: pointer; padding: 2px 6px; border-radius: 4px; flex-shrink: 0;
      font-size: 1rem; line-height: 1;
    }
    .builder-item .btn-remove-row:hover { color: var(--color-danger); background: #fef5f4; }
    .builder-sort-actions {
      display: inline-flex; align-items: center; gap: 4px; flex-shrink: 0;
    }
    .builder-item .btn-sort-row {
      width: 28px; height: 28px; border-radius: 4px;
      border: 1px solid var(--color-border); background: var(--color-bg-alt);
      color: var(--color-text-2); cursor: pointer; font-weight: 700;
      line-height: 1;
    }
    .builder-item .btn-sort-row:hover {
      color: var(--color-accent); border-color: var(--color-accent-l);
      background: #fffaf5;
    }
    .btn-add-row {
      display: inline-flex; align-items: center; gap: 4px;
      padding: 5px 14px; margin-top: 4px; border-radius: var(--radius-sm);
      font-size: 0.82rem; font-weight: 500; font-family: inherit;
      border: 1px dashed var(--color-border); background: transparent;
      color: var(--color-text-2); cursor: pointer; transition: all 0.2s;
    }
    .btn-add-row:hover { border-color: var(--color-accent); color: var(--color-accent); }
    .res-section { margin-bottom: var(--space-3); }
    .res-section h5 {
      font-size: 0.85rem; font-weight: 600; margin-bottom: 4px;
      color: var(--color-text-2);
    }
    .extended-reading-section { margin-bottom: var(--space-3); }
    .extended-reading-section h4 { margin-bottom: var(--space-1); }
    .extended-reading-grid {
      display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: var(--space-2);
    }
    .extended-reading-card {
      position: relative; align-items: stretch; min-height: 168px;
    }
    .extended-reading-body {
      min-width: 0; display: flex; flex-direction: column;
    }
    .extended-reading-copy { min-width: 0; }
    .new-book-card .nb-body .nb-row.extended-reading-description {
      display: block; white-space: pre-wrap; overflow: visible; text-overflow: clip;
      margin-top: 2px; padding-right: 4px;
      overflow-wrap: anywhere; max-height: none;
    }
    .extended-reading-detail {
      align-self: flex-end; margin-top: auto;
    }

    /* ========================================
       Modal
       ======================================== */
    .modal-overlay {
      position: fixed; inset: 0; z-index: 200;
      background: rgba(30,25,20,0.25); backdrop-filter: blur(6px);
      display: flex; align-items: center; justify-content: center;
      padding: var(--space-3);
    }
    .modal {
      background: var(--color-surface); border-radius: var(--radius-lg);
      box-shadow: var(--shadow-lg); width: 100%; max-width: 500px;
      max-height: 90vh; overflow-y: auto;
    }
    .modal-wide { max-width: 1200px; }
    .modal-header {
      display: flex; align-items: center; justify-content: space-between;
      padding: var(--space-3); border-bottom: 1px solid var(--color-border);
    }
    .modal-body { padding: var(--space-3); }
    .modal-header button { background: none; border: none; color: var(--color-text-3); padding: 4px; border-radius: 6px; }
    .modal-header button:hover { background: var(--color-bg-alt); color: var(--color-text); }

    /* ========================================
       Toast
       ======================================== */
    #toast-container {
      position: fixed; top: 76px; right: var(--space-3); z-index: 300;
      display: flex; flex-direction: column; gap: var(--space-1);
    }
    .toast {
      padding: 12px 20px; border-radius: var(--radius-sm);
      font-size: 0.88rem; font-weight: 500; box-shadow: var(--shadow-lg);
      animation: toastIn 0.3s ease-out; max-width: 360px;
    }
    .toast-success { background: #e8efe5; color: var(--color-success); }
    .toast-error { background: #fef5f4; color: var(--color-danger); }
    @keyframes toastIn { from { opacity: 0; transform: translateX(16px); } to { opacity: 1; transform: translateX(0); } }

    /* ========================================
       Login / Register
       ======================================== */
    .auth-page { max-width: 420px; margin: var(--space-8) auto; }
    .auth-page .card { padding: var(--space-4); }
    .auth-page h2 { text-align: center; margin-bottom: var(--space-3); }
    .auth-page .alt-link {
      text-align: center; margin-top: var(--space-3);
      font-size: 0.9rem; color: var(--color-text-2);
    }
    .captcha-row {
      margin-bottom: var(--space-3); position: relative;
    }
    .puzzle-box {
      position: relative; width: 100%; height: 160px;
      border-radius: var(--radius-sm); overflow: hidden;
      user-select: none; margin-bottom: 12px;
    }
    .puzzle-box .pz-bg {
      width: 100%; height: 100%;
    }
    .puzzle-box .pz-gap {
      position: absolute; top: 55px; width: 50px; height: 50px;
      background: rgba(0,0,0,0.18);
      box-shadow: inset 0 0 0 2px rgba(255,255,255,0.5), 0 0 0 2px rgba(0,0,0,0.08);
      pointer-events: none; z-index: 1;
    }
    .puzzle-box .pz-piece {
      position: absolute; top: 55px; width: 50px; height: 50px;
      box-shadow: 0 2px 8px rgba(0,0,0,0.35); z-index: 3;
      pointer-events: none;
    }
    .puzzle-box .pz-piece svg,
    .puzzle-box .pz-gap svg {
      width: 100%; height: 100%; display: block;
    }
    .puzzle-box .pz-status {
      position: absolute; left: 50%; top: 12px; transform: translateX(-50%);
      font-size: 0.82rem; padding: 3px 14px; border-radius: 12px;
      pointer-events: none; z-index: 5; font-weight: 500;
      background: rgba(0,0,0,0.4); color: #fff;
    }
    .puzzle-box.success .pz-status { background: rgba(76,175,80,0.8); }
    .puzzle-box.fail .pz-status { background: rgba(220,53,69,0.8); }
    .puzzle-slider {
      position: relative; width: 100%; height: 44px;
      background: var(--color-bg-alt); border: 1px solid var(--color-border);
      border-radius: 22px; overflow: hidden;
    }
    .puzzle-slider .pz-track {
      position: absolute; left: 0; top: 0; bottom: 0;
      background: linear-gradient(90deg, #c8e6c9, #81c784);
      border-radius: 22px 0 0 22px; pointer-events: none;
      transition: width 0.05s linear; width: 0;
    }
    .puzzle-slider .pz-handle {
      position: absolute; left: 2px; top: 2px;
      width: 40px; height: 40px; background: #fff;
      border-radius: 50%; cursor: grab; z-index: 2;
      box-shadow: 0 2px 8px rgba(0,0,0,0.15);
      display: flex; align-items: center; justify-content: center;
      transition: left 0.05s linear;
    }
    .puzzle-slider .pz-handle:active { cursor: grabbing; }
    .puzzle-slider .pz-handle svg { width: 18px; height: 18px; color: #999; pointer-events: none; }
    .puzzle-slider.success .pz-handle { background: #4caf50; left: calc(100% - 42px) !important; }
    .puzzle-slider.success .pz-handle svg { color: #fff; }
    .puzzle-slider.success .pz-track { width: 100% !important; background: linear-gradient(90deg, #66bb6a, #43a047); }
    .captcha-refresh {
      display: inline-block; margin-top: 4px; font-size: 0.78rem;
      color: var(--color-text-3); cursor: pointer;
      background: none; border: none; padding: 2px 4px;
    }
    .captcha-refresh:hover { color: var(--color-accent); }
    .puzzle-slider.locked { pointer-events: none; opacity: 0.5; }
    .puzzle-slider.locked .pz-handle { cursor: not-allowed; }

    /* ========================================
       Home Hero
       ======================================== */
    .hero {
      padding: var(--space-8) 0 var(--space-4);
      text-align: center;
    }
    .hero h1 {
      font-size: 3rem; margin-bottom: var(--space-2);
      font-family: var(--font-serif); letter-spacing: 0.05em;
    }
    .hero .lead {
      font-family: var(--font-serif); font-size: 1rem;
      color: var(--color-text-2); max-width: 520px;
      margin: 0 auto; line-height: 2.2;
    }
    .hero-divider {
      width: 40px; height: 2px; background: var(--color-accent-l);
      margin: var(--space-3) auto; border-radius: 1px;
    }
    .current-book-section { padding-bottom: var(--space-4); }
    .current-book-card {
      display: flex; gap: var(--space-3); align-items: flex-start;
      background: var(--color-surface); border-radius: var(--radius-lg);
      border: 1px solid var(--color-border); box-shadow: var(--shadow-sm);
      padding: var(--space-3); max-width: 480px; flex: 1; min-width: 320px;
      transition: box-shadow 0.3s ease;
      position: relative;
    }
    .current-book-card:hover { box-shadow: var(--shadow-md); }
    .current-book-card > .status-badge {
      position: absolute; top: 12px; right: 12px; z-index: 1;
    }
    .current-book-card .cover-slot {
      width: 130px; aspect-ratio: 3/4; border-radius: var(--radius-sm);
      background: var(--color-bg-alt); flex-shrink: 0;
      display: flex; align-items: center; justify-content: center;
      font-family: var(--font-serif); font-size: 1.5rem; color: var(--color-text-3);
      position: relative; overflow: hidden;
    }
    .current-book-card .cover-slot img { width: 100%; height: 100%; object-fit: cover; position: absolute; top: 0; left: 0; }
    .current-book-card .info { flex: 1; }
    .current-book-card .info h3 { font-size: 1.35rem; margin-bottom: 4px; }
    .current-book-card .info .book-meta { font-size: 0.88rem; color: var(--color-text-2); margin-bottom: 3px; }
    .current-book-card .info .book-meta.muted { color: var(--color-text-3); }
    .current-book-card .info .period { font-size: 0.85rem; color: var(--color-text-3); margin-bottom: 12px; }

    /* ========================================
       Edition Guide Cards
       ======================================== */
    .edition-card {
      background: var(--color-surface); border: 1px solid var(--color-border);
      border-radius: var(--radius-md); padding: var(--space-3);
      transition: box-shadow 0.2s ease;
    }
    .edition-card-with-cover { display: flex; gap: var(--space-3); align-items: flex-start; }
    .edition-card-body { flex: 1; min-width: 0; }
    .edition-cover {
      width: 160px; flex-shrink: 0; border-radius: var(--radius-sm);
      overflow: hidden; border: 1px solid var(--color-border);
    }
    .edition-cover img { width: 100%; aspect-ratio: 3/4; object-fit: cover; display: block; }
    .edition-card:hover { box-shadow: var(--shadow-sm); }
    .edition-card h3 { font-size: 1.1rem; margin-bottom: var(--space-1); }
    .edition-meta {
      font-size: 0.88rem; color: var(--color-text-2); margin-bottom: var(--space-2);
    }
    .edition-meta div { margin-bottom: 2px; }
    .edition-pros-cons {
      display: flex; flex-direction: column; gap: var(--space-2);
      margin-bottom: var(--space-2); font-size: 0.9rem;
    }
    .edition-pros-cons p { margin: 2px 0 0; line-height: 1.7; white-space: pre-wrap; }
    .pros-label { color: var(--color-success); font-weight: 700; font-size: 0.85rem; }
    .cons-label { color: var(--color-danger); font-weight: 700; font-size: 0.85rem; }
    .edition-links { display: flex; gap: 8px; flex-wrap: wrap; }

    .chat-substance-list {
      display: flex; flex-direction: column; gap: var(--space-2);
    }
    .chat-substance-card {
      padding: 14px 16px;
    }
    .chat-substance-head {
      display: flex; align-items: flex-start; justify-content: space-between;
      gap: var(--space-3);
    }
    .chat-substance-head h3 {
      flex: 1; min-width: 0; margin-bottom: 0; line-height: 1.45; word-break: break-word;
    }
    .chat-substance-meta {
      color: var(--color-text-2); font-size: 0.86rem;
    }
    .chat-substance-meta.expanded {
      margin-bottom: var(--space-2);
    }
    .chat-substance-toggle {
      flex: 0 0 auto; margin-top: 2px;
    }
    .chat-substance-body {
      margin-top: var(--space-3); padding-top: var(--space-3);
      border-top: 1px solid var(--color-border);
    }
    .chat-substance-body .md-content,
    .chat-substance-body .md-content p,
    .chat-substance-body .md-content pre,
    .chat-substance-body .md-content code {
      white-space: pre-wrap;
      overflow-wrap: anywhere;
      word-break: break-word;
    }
    .chat-substance-body .md-content pre {
      max-width: 100%; overflow-x: hidden;
    }
    .chat-pdf-actions {
      display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
      margin-top: var(--space-3);
    }

    /* Resource Access Locks */
    .resource-access-panel {
      display: flex; align-items: center; gap: var(--space-2);
      margin: var(--space-3) 0; padding: 12px 14px;
      border: 1px solid var(--color-border); border-radius: var(--radius-sm);
      background: var(--color-bg-alt);
    }
    .resource-access-panel.unlocked { background: #f4f8f1; border-color: #dce8d2; }
    .resource-access-panel > i {
      width: 22px; height: 22px; color: var(--color-accent); flex: 0 0 auto;
    }
    .resource-access-panel > div { flex: 1; min-width: 0; }
    .resource-access-panel strong { display: block; font-size: 0.95rem; }
    .resource-access-panel p {
      margin-top: 2px; color: var(--color-text-2); font-size: 0.86rem; line-height: 1.6;
    }
    .resource-locked-inline {
      display: inline-flex; align-items: center; gap: 8px; flex-wrap: wrap;
      padding: 4px 0; color: var(--color-text-2); font-size: 0.85rem;
    }
    .resource-locked-inline > span {
      display: inline-flex; align-items: center; gap: 4px;
    }
    .resource-locked-inline i { width: 14px; height: 14px; color: var(--color-text-3); }
    .resource-lock-note { color: var(--color-text-3); font-size: 0.82rem; }
    .resource-locked-block {
      display: flex; gap: var(--space-2); align-items: flex-start;
      padding: 14px; border: 1px dashed var(--color-border);
      border-radius: var(--radius-sm); background: var(--color-bg);
    }
    .resource-locked-block > i {
      width: 22px; height: 22px; color: var(--color-text-3); flex: 0 0 auto;
    }
    .resource-locked-block strong { display: block; margin-bottom: 4px; }
    .resource-locked-block p {
      color: var(--color-text-2); font-size: 0.88rem; line-height: 1.7;
      margin-bottom: 8px;
    }

    .book-join-flow {
      display: flex; flex-direction: column; gap: var(--space-3);
      max-width: 940px;
    }
    .book-join-step {
      display: grid; grid-template-columns: minmax(0, 1fr) 280px;
      gap: var(--space-4); align-items: center;
      padding: var(--space-3);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      background: var(--color-bg);
    }
    .book-join-step-copy {
      display: grid; grid-template-columns: 44px minmax(0, 1fr);
      gap: var(--space-2); align-items: start;
      min-width: 0;
    }
    .book-join-step-copy span {
      width: 44px; height: 44px; border-radius: 50%;
      display: inline-flex; align-items: center; justify-content: center;
      border: 1px solid var(--color-border);
      color: var(--color-accent); font-weight: 800; font-size: 0.86rem;
      background: var(--color-bg-alt);
    }
    .book-join-step-copy p {
      margin: 0; color: var(--color-text); line-height: 1.85;
      font-size: 0.98rem;
    }
    .book-join-step-action {
      width: 100%; display: flex; justify-content: stretch;
    }
    .book-join-qr {
      width: 100%; padding: 12px; border: 1px solid var(--color-border);
      border-radius: var(--radius-sm); background: var(--color-bg-alt);
      text-align: center;
    }
    .book-join-qr img {
      width: 100%; aspect-ratio: 1; object-fit: contain;
      border-radius: var(--radius-sm); background: #fff;
    }
    .book-join-qr p {
      margin-top: 8px; color: var(--color-text-2); font-size: 0.86rem;
    }
    .book-join-placeholder {
      width: 100%; min-height: 180px;
      display: flex; flex-direction: column; align-items: center; justify-content: center;
      gap: 6px; padding: 16px;
      border: 1px dashed var(--color-border); border-radius: var(--radius-sm);
      background: var(--color-bg-alt); text-align: center;
      color: var(--color-text-2);
    }
    .book-join-placeholder i { width: 34px; height: 34px; color: var(--color-text-3); }
    .book-join-placeholder strong { color: var(--color-text); }
    .book-join-placeholder p { margin: 0; font-size: 0.86rem; }
    .book-claim-form {
      width: 100%;
      padding: 12px; border: 1px solid var(--color-border);
      border-radius: var(--radius-sm); background: var(--color-bg-alt);
    }
    .book-claim-form .btn { width: 100%; justify-content: center; }
    .book-join-finished-btn {
      width: 100%; min-height: 46px; justify-content: center;
    }

    /* Activity status tags */
    .tag-status-planning { background: #e8efe5; color: var(--color-success); }
    .tag-status-ongoing  { background: #fdf3dc; color: var(--color-tag-active); }
    .tag-status-done     { background: #eee9e2; color: var(--color-tag-completed); }

    /* ========================================
       Cover Upload
       ======================================== */
    .cover-upload { display: flex; gap: var(--space-3); align-items: flex-start; }
    .cover-preview {
      width: 90px; aspect-ratio: 3/4; border-radius: var(--radius-sm);
      background: var(--color-bg-alt); display: flex; align-items: center;
      justify-content: center; overflow: hidden; flex-shrink: 0;
      border: 1px dashed var(--color-border);
    }
    .cover-preview img { width: 100%; height: 100%; object-fit: cover; }
    .cover-inputs { flex: 1; }
    .divider-text {
      text-align: center; color: var(--color-text-3); font-size: 0.82rem;
      margin: 8px 0; position: relative;
    }
    .divider-text::before, .divider-text::after {
      content: ''; position: absolute; top: 50%; width: 38%; height: 1px;
      background: var(--color-border);
    }
    .divider-text::before { left: 0; }
    .divider-text::after { right: 0; }

    /* ========================================
       New Books Express — 新书速递
       ======================================== */
    .new-books-layout {
      display: flex; gap: var(--space-4); align-items: flex-start;
    }
    .new-books-layout .new-books-main { flex: 1; min-width: 0; }
    .new-books-layout .new-books-side { width: 280px; flex-shrink: 0; }

    .new-book-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: var(--space-3);
    }
    .new-book-card {
      display: flex; flex-direction: row;
      background: var(--color-surface);
      border-radius: var(--radius-md);
      border: 1px solid var(--color-border);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      transition: box-shadow 0.3s ease, transform 0.2s ease;
    }
    .new-book-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }
    .new-book-card .nb-cover {
      width: 120px; flex-shrink: 0;
      background: var(--color-bg-alt);
      position: relative; overflow: hidden;
      display: flex; align-items: center; justify-content: center;
      text-decoration: none;
    }
    .new-book-card .nb-cover img {
      width: 100%; height: 100%; object-fit: cover;
      position: absolute; top: 0; left: 0;
    }
    .new-book-card .nb-cover .cover-fallback {
      width: 36px; height: 36px; color: var(--color-text-3);
    }
    .new-book-card .nb-body {
      padding: var(--space-2); flex: 1;
      display: flex; flex-direction: column;
      min-width: 0;
    }
    .new-book-card .nb-body h3 {
      font-size: 0.92rem; margin-bottom: 6px;
      line-height: 1.35; font-weight: 600;
    }
    .new-book-card .nb-body h3 a {
      color: var(--color-text); text-decoration: none;
    }
    .new-book-card .nb-body h3 a:hover { color: var(--color-accent); }
    .new-book-card .nb-body .nb-row {
      font-size: 0.78rem; color: var(--color-text-2);
      line-height: 1.6;
      white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    }
    .new-book-card .nb-body .nb-row .nb-label {
      color: var(--color-text-3); font-size: 0.72rem;
      display: inline-block; width: 48px; flex-shrink: 0;
    }
    .new-book-card .nb-body .nb-row.rating { color: var(--color-accent); font-weight: 600; }
    .new-book-card .nb-actions {
      margin-top: auto; display: flex; gap: 6px;
      justify-content: flex-end; padding-top: var(--space-2);
    }
    .new-book-card .nb-actions .btn { font-size: 0.75rem; }
    .new-book-card .nb-actions .btn-wish {
      display: inline-flex; align-items: center; gap: 4px;
      padding: 5px 12px; border-radius: 20px;
      font-size: 0.75rem; font-weight: 600;
      border: 1.5px solid var(--color-accent);
      background: transparent; color: var(--color-accent);
      cursor: pointer; transition: all 0.2s ease;
      white-space: nowrap;
    }
    .new-book-card .nb-actions .btn-wish:hover {
      background: var(--color-accent-bg);
    }
    .new-book-card .nb-actions .btn-wish.active {
      background: var(--color-accent); color: #fff;
      box-shadow: 0 2px 8px rgba(193,125,75,0.22);
    }
    .new-book-card .nb-actions .btn-wish:disabled {
      opacity: 0.5; cursor: not-allowed;
    }
    .new-book-card .nb-actions .btn-wish .wish-count {
      font-size: 0.72rem; opacity: 0.85;
    }

    /* Refresh status bar */
    .refresh-bar {
      display: flex; align-items: center; justify-content: space-between;
      flex-wrap: wrap; gap: var(--space-2);
      padding: var(--space-2) var(--space-3);
      background: var(--color-accent-bg); border-radius: var(--radius-sm);
      margin-bottom: var(--space-3); font-size: 0.85rem;
    }
    .refresh-bar .last-update { color: var(--color-text-2); }
    .refresh-bar .refresh-hint { color: var(--color-accent); font-weight: 500; }

    /* Leaderboard */
    .leaderboard { max-width: 520px; }
    .leaderboard-item {
      display: flex; align-items: center; gap: var(--space-2);
      padding: var(--space-1) 0;
      border-bottom: 1px solid var(--color-border);
    }
    .leaderboard-item:last-child { border-bottom: none; }
    .leaderboard-item .lb-rank {
      width: 28px; height: 28px; border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      font-weight: 700; font-size: 0.85rem; flex-shrink: 0;
    }
    .lb-rank.top1 { background: #fdf3dc; color: var(--color-accent); }
    .lb-rank.top2 { background: #eee9e2; color: var(--color-text-2); }
    .lb-rank.top3 { background: #f5ebe0; color: var(--color-accent-l); }
    .lb-rank.rest  { background: var(--color-bg-alt); color: var(--color-text-3); }
    .leaderboard-item .lb-cover {
      width: 32px; height: 44px; border-radius: 4px;
      overflow: hidden; flex-shrink: 0;
      background: var(--color-bg-alt);
    }
    .leaderboard-item .lb-cover img {
      width: 100%; height: 100%; object-fit: cover;
    }
    .leaderboard-item .lb-info { flex: 1; min-width: 0; }
    .leaderboard-item .lb-title {
      font-weight: 600; font-size: 0.9rem;
      white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    }
    .leaderboard-item .lb-title a {
      color: var(--color-text); text-decoration: none;
    }
    .leaderboard-item .lb-title a:hover { color: var(--color-accent); }
    .leaderboard-item .lb-meta {
      font-size: 0.75rem; color: var(--color-text-3);
      white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    }
    .leaderboard-item .lb-votes {
      font-size: 0.8rem; color: var(--color-accent);
      font-weight: 600; white-space: nowrap;
      display: flex; align-items: center; gap: 2px;
    }

    /* ========================================
       Latin America Literary Map — 西语文学地图
       ======================================== */
    .latam-layout {
      display: flex; gap: var(--space-4); align-items: flex-start;
    }
    .latam-map-wrap { flex: 1; min-width: 0; max-width: 580px; }
    .latam-map-wrap .leaflet-container {
      background: #fefaf5;
      font-family: var(--font-sans);
    }
    /* Leaflet control overrides for warm amber theme */
    .latam-map-wrap .leaflet-control-zoom a {
      color: var(--color-text-2);
      background: var(--color-surface);
      border-color: var(--color-border);
    }
    .latam-map-wrap .leaflet-control-zoom a:hover {
      color: var(--color-accent);
      background: var(--color-accent-bg);
    }
    .latam-map-wrap .leaflet-control-attribution {
      font-size: 0.65rem;
      color: var(--color-text-3);
      background: rgba(255,255,255,0.7);
    }

    /* Info panel */
    .latam-panel {
      width: 380px; flex-shrink: 0;
      background: var(--color-surface);
      border-radius: var(--radius-md);
      border: 1px solid var(--color-border);
      box-shadow: var(--shadow-sm);
      padding: var(--space-3);
      min-height: 400px;
    }
    .latam-panel h2 {
      font-size: 1.2rem; margin-bottom: 4px;
      display: flex; align-items: center; gap: 6px;
    }
    .latam-panel .panel-intro {
      color: var(--color-text-2); font-size: 0.85rem;
      line-height: 1.6; margin-bottom: var(--space-3);
    }
    .latam-panel .latam-author-card {
      padding: var(--space-2) 0;
      border-bottom: 1px solid var(--color-border);
    }
    .latam-panel .latam-author-card:last-child { border-bottom: none; }
    .latam-panel .latam-author-card .author-name {
      font-weight: 700; font-size: 0.95rem;
      color: var(--color-text);
      display: flex; align-items: center; gap: 6px;
    }
    .latam-panel .latam-author-card .author-name .icon { font-size: 1rem; }
    .latam-panel .latam-author-card .author-bio {
      font-size: 0.78rem; color: var(--color-text-3);
      line-height: 1.5; margin-top: 2px;
    }
    .latam-panel .latam-author-card .author-works {
      display: flex; flex-wrap: wrap; gap: 4px; margin-top: 4px;
    }
    .latam-panel .latam-author-card .author-works .work-tag {
      font-size: 0.72rem; padding: 2px 8px;
      background: var(--color-accent-bg);
      color: var(--color-accent);
      border-radius: 20px;
    }

    /* Country quick tags */
    .latam-tags {
      display: flex; flex-wrap: wrap; gap: 6px;
      margin-top: var(--space-3);
    }
    .latam-tags .latam-tag {
      padding: 5px 12px; border-radius: 20px;
      font-size: 0.78rem; font-weight: 500;
      background: var(--color-bg-alt);
      color: var(--color-text-2);
      border: 1px solid transparent;
      cursor: pointer; transition: all 0.2s ease;
    }
    .latam-tags .latam-tag:hover {
      background: var(--color-accent-bg);
      color: var(--color-accent);
      border-color: var(--color-accent);
    }
    .latam-tags .latam-tag.active {
      background: var(--color-accent);
      color: #fff;
    }

    /* ========================================
       Responsive
       ======================================== */
    @media (max-width: 768px) {
      :root { font-size: 15px; }
      html, body { overflow-x: hidden; }
      h1 { font-size: 2rem; }
      h2 { font-size: 1.5rem; }
      .container { padding: 0 18px; }
      #topnav .container {
        height: 58px; gap: 8px;
      }
      .nav-left, .nav-right, .nav-user {
        min-width: 0; gap: 8px;
      }
      .nav-brand {
        font-size: 1.16rem; letter-spacing: 0.02em;
      }
      .nav-brand i { width: 23px; height: 23px; }
      .nav-user-link,
      .nav-user .btn {
        padding: 6px 9px; font-size: 0.78rem; white-space: nowrap;
      }
      .btn-bell {
        width: 34px; height: 34px; flex: 0 0 auto;
      }
      .nav-links { display: none; }
      .nav-links.open {
        display: flex; flex-direction: column; position: absolute;
        top: 100%; left: 0; right: 0; gap: 4px;
        background: rgba(251,249,246,0.98);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--color-border);
        padding: 8px 18px 12px;
        box-shadow: var(--shadow-md);
      }
      .nav-links.open a {
        display: block; width: 100%; padding: 11px 14px;
      }
      .hamburger {
        display: inline-flex; align-items: center; justify-content: center;
        width: 38px; height: 38px; flex: 0 0 auto;
      }
      .page-header {
        padding: var(--space-4) 0 var(--space-2);
        margin-bottom: var(--space-3);
      }
      .grid-2, .grid-3, .grid-4, .grid-6 { grid-template-columns: repeat(2, 1fr); }
      .filters {
        flex-wrap: nowrap; overflow-x: auto; overscroll-behavior-x: contain;
        margin: 0 -18px var(--space-3); padding: 0 18px 4px;
        scrollbar-width: none;
      }
      .filters::-webkit-scrollbar,
      .tabs::-webkit-scrollbar { display: none; }
      .filter-chip {
        flex: 0 0 auto; padding: 8px 14px; white-space: nowrap;
      }
      .member-heading { align-items: flex-start; flex-direction: column; }
      .member-overview, .member-main-grid, .member-ticket-page-grid { grid-template-columns: 1fr; }
      .member-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .user-library-five-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .user-library-three-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .member-library-slots-want { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .member-library-slot-card {
        grid-template-columns: 30px 64px minmax(0, 1fr);
        align-items: start;
      }
      .member-library-slots-want .member-library-slot-card,
      .member-library-slots-want .member-library-empty-slot {
        min-height: 320px;
      }
      .member-library-slot-card .member-library-cover { width: 64px; }
      .member-library-slots-want .member-library-cover {
        width: min(100%, 92px);
      }
      .member-library-slot-actions {
        grid-column: 1 / -1; flex-direction: row;
      }
      .member-library-url-row { grid-template-columns: 1fr; }
      .reading-circle-layout { grid-template-columns: 1fr; }
      .reading-circle-side { position: static; }
      .reading-circle-feed { max-width: none; justify-self: stretch; }
      .reading-circle-controls {
        align-items: stretch; flex-direction: column;
      }
      .reading-search-form {
        display: grid; grid-template-columns: minmax(0, 1fr) auto;
        width: 100%;
      }
      .reading-search-form input {
        width: 100%; min-height: 38px;
      }
      .reading-post-head, .reading-post-foot { align-items: flex-start; flex-direction: column; }
      .reading-post-actions { margin-left: 0; }
      .reading-post-card .card-body { padding: var(--space-2); }
      .comment-form {
        display: grid; grid-template-columns: 1fr; align-items: stretch;
      }
      .comment-form .btn {
        width: 100%; justify-content: center;
      }
      .reading-login-tip .card-body { align-items: flex-start; flex-direction: column; }
      .friend-search-row { align-items: stretch; flex-direction: column; }
      .friend-search-row .btn { justify-content: center; }
      .new-books-layout { flex-direction: column; }
      .new-books-layout .new-books-side { width: 100%; }
      .extended-reading-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .latam-layout { flex-direction: column; }
      .latam-map-wrap { max-width: 100%; }
      #latam-leaflet-map { height: 350px !important; }
      .latam-panel { width: 100%; }
      .new-book-grid { grid-template-columns: 1fr; }
      .new-book-card .nb-cover { width: 100px; }
      .current-book-section {
        gap: var(--space-2) !important;
        padding: 0 18px var(--space-3);
      }
      .current-book-card {
        width: 100%; min-width: 0; max-width: 480px;
        flex-direction: column; align-items: center; text-align: center;
        gap: var(--space-2); padding: var(--space-2);
      }
      .current-book-card .cover-slot { width: 100px; }
      .current-book-card .info { min-width: 0; }
      .current-book-card .info h3 { font-size: 1.12rem; }
      .book-detail-hero {
        display: grid !important;
        grid-template-columns: 104px minmax(0, 1fr);
        gap: var(--space-2) !important;
        align-items: flex-start;
      }
      .book-detail-cover-wrap { width: 104px !important; }
      .book-detail-info { min-width: 0 !important; }
      .book-detail-info h1 {
        font-size: 1.6rem; line-height: 1.35; word-break: break-word;
      }
      .hero { padding: var(--space-6) 0 var(--space-3); }
      .hero h1 { font-size: 2.2rem; }
      .section { padding: var(--space-5) 0; }
      .tabs {
        flex-wrap: nowrap; overflow-x: auto; overscroll-behavior-x: contain;
        margin-left: -18px; margin-right: -18px;
        padding: 0 18px; scrollbar-width: none;
      }
      #book-tabs { flex-wrap: nowrap; }
      #book-tabs .tab,
      .tab {
        flex: 0 0 auto; min-height: 40px;
        font-size: 0.82rem; padding: 9px 14px;
      }
      .resource-access-panel {
        align-items: flex-start; flex-wrap: wrap;
      }
      .resource-access-panel > div { flex-basis: calc(100% - 38px); }
      .leaderboard-grid { grid-template-columns: 1fr; gap: var(--space-3); }
      .leaderboard { max-width: none; }
      .friend-sections { grid-template-columns: 1fr; }
      .notification-panel { width: calc(100vw - 16px); right: 8px; top: 50px; }
      .book-join-step { grid-template-columns: 1fr; align-items: stretch; }
      .book-join-step-copy { grid-template-columns: 38px minmax(0, 1fr); }
      .book-join-step-copy span { width: 38px; height: 38px; }
      .modal-overlay {
        align-items: flex-end; padding: 0;
      }
      .modal, .modal-wide {
        max-width: 100%; max-height: min(90vh, 720px);
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
      }
      #toast-container {
        top: 68px; left: 18px; right: 18px;
      }
      .toast { max-width: none; }
    }

    @media (max-width: 375px) {
      .container { padding: 0 14px; }
      .nav-brand { font-size: 1.08rem; }
      .nav-user-link,
      .nav-user .btn {
        padding: 5px 8px; font-size: 0.74rem;
      }
      .filters {
        margin-left: -14px; margin-right: -14px;
        padding-left: 14px; padding-right: 14px;
      }
      .tabs {
        margin-left: -14px; margin-right: -14px;
        padding-left: 14px; padding-right: 14px;
      }
      .hero h1 { font-size: 1.8rem; }
      .member-heading-profile, .member-current-card { align-items: flex-start; }
      .member-current-card { flex-direction: column; }
      .member-stats-grid { grid-template-columns: 1fr; }
      .member-library-slots-want { grid-template-columns: 1fr; }
      .user-library-five-grid { grid-template-columns: 1fr; }
      .user-library-three-grid { grid-template-columns: 1fr; }
      .extended-reading-grid { grid-template-columns: 1fr; }
      .reading-post-main { flex-direction: column; }
      .reading-post-cover { width: 92px; }
      .book-detail-hero { grid-template-columns: 92px minmax(0, 1fr); }
      .book-detail-cover-wrap { width: 92px !important; }
      .book-detail-info h1 { font-size: 1.35rem; }
      .edition-card-with-cover { flex-direction: column; }
      .edition-cover { width: min(160px, 52vw); }
      .badge-riddle-form > div { grid-template-columns: 1fr; }
      .modal, .modal-wide { max-width: 95vw; }
    }

    /* 共读导言头部 */
    .host-notes-header { margin-bottom: var(--space-3); }
    .host-notes-header h2 {
      font-family: var(--font-serif); font-size: 1.8rem; margin-bottom: 4px;
      color: var(--color-text); text-align: center; font-weight: 700;
    }
    .host-notes-subtitle {
      font-family: var(--font-serif); font-size: 1.1rem; color: var(--color-text-2);
      margin-bottom: 2px; text-align: center; font-weight: 400;
    }
    .host-notes-author {
      font-size: 1.05rem; color: var(--color-text-2); font-weight: 700;
      text-align: right;
    }