:root {
        --font-ui: "Segoe UI", "Yu Gothic UI", "Hiragino Sans", "Meiryo", sans-serif;
        --app-shell-max-width: 860px;
        --app-shell-half-width: calc(var(--app-shell-max-width) / 2);
        --page-bg: rgb(231, 244, 242);
        --panel: #ffffff;
        --border: rgba(25, 52, 73, 0.12);
        --text: #14324b;
        --muted: #61788f;
        --accent: #0f8f7b;
        --accent-dark: #0c7464;
        --accent-rgb: 15,143,123;
      }

      * {
        box-sizing: border-box;
      }

      body {
        margin: 0;
        min-height: 100vh;
        font-family: var(--font-ui);
        color: var(--text);
        background: var(--page-bg);
        padding: 24px 16px;
        display: grid;
        place-items: start center;
        overflow-x: hidden;
      }

      input,
      button,
      select,
      textarea,
      pre {
        font-family: inherit;
      }

      .app {
          position: relative;
        --card-fixed-edge-gap: max(16px, calc(50% - var(--app-shell-half-width)));
        --top-nav-button-size: calc(38px + var(--app-font-size-offset, 0px));
        --top-nav-icon-size: calc(20px + var(--app-font-size-offset, 0px));
        --top-nav-radius: calc(12px + (var(--app-font-size-offset, 0px) / 2));
        --top-nav-ticket-font-size: calc(13px + var(--app-font-size-offset, 0px));
        --top-nav-ticket-gap: calc(4px + (var(--app-font-size-offset, 0px) / 2));
        --top-nav-ticket-padding-x: calc(8px + (var(--app-font-size-offset, 0px) / 2));
        --top-nav-top: calc(30px + var(--app-font-size-offset, 0px));
        --top-nav-side-offset: calc(8px + (var(--app-font-size-offset, 0px) / 2));
        --top-search-top: calc(72px + var(--app-font-size-offset, 0px));
        --top-search-width: calc(100px + (var(--app-font-size-offset, 0px) * 3));
        --top-search-height: calc(28px + var(--app-font-size-offset, 0px));
        --top-search-radius: calc(10px + (var(--app-font-size-offset, 0px) / 2));
        --top-search-gap: calc(6px + (var(--app-font-size-offset, 0px) / 2));
        --top-search-font-size: calc(11px + var(--app-font-size-offset, 0px));
        --top-search-padding-x: calc(9px + (var(--app-font-size-offset, 0px) / 2));
        width: min(100%, var(--app-shell-max-width));
        border-radius: 24px;
        border: 1px solid var(--border);
        background: var(--panel);
        box-shadow: 0 24px 45px rgba(21, 43, 62, 0.14);
        padding: 28px;
        min-width: 0;
      }

      .top-row {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        flex-wrap: wrap;
        min-width: 0;
        margin-top: calc(30px + var(--app-font-size-offset, 0px));
          padding-right: calc(150px + (var(--app-font-size-offset, 0px) * 3));
      }

      .top-row > h1 {
        margin-left: 8px;
      }

      h1 {
        margin: 0;
        font-size: clamp(26px, 5vw, 36px);
      }

      .top-nav {
        display: contents;
      }

      .top-nav-link {
        width: var(--top-nav-button-size);
        min-height: var(--top-nav-button-size);
        border: none;
        border-radius: var(--top-nav-radius);
        background: rgba(255, 255, 255, 0.85);
        padding: 0;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        color: var(--accent);
        text-decoration: none;
      }

      .top-nav-link:hover {
        background: rgba(var(--accent-rgb), 0.10);
      }

      .top-nav-link svg {
        width: var(--top-nav-icon-size);
        height: var(--top-nav-icon-size);
        stroke: currentColor;
        fill: none;
        stroke-width: 2;
        stroke-linecap: round;
        stroke-linejoin: round;
      }

      .ticket-nav-link {
        width: auto;
        min-width: 0;
        padding: 0 var(--top-nav-ticket-padding-x);
        gap: var(--top-nav-ticket-gap);
        font-size: var(--top-nav-ticket-font-size);
        font-weight: 700;
        white-space: nowrap;
      }

      .ticket-nav-link svg {
        flex: 0 0 auto;
      }

      .ticket-points {
        line-height: 1;
        font-variant-numeric: tabular-nums;
      }

      .nav-right-1 {
        position: fixed;
        top: var(--top-nav-top);
        right: calc(var(--card-fixed-edge-gap) + 86px + (var(--app-font-size-offset, 0px) * 2));
        z-index: 20;
      }

      .nav-right-2 {
        position: fixed;
        top: var(--top-nav-top);
        right: calc(var(--card-fixed-edge-gap) + 48px + var(--app-font-size-offset, 0px));
        z-index: 20;
      }

      .nav-right-3 {
        position: fixed;
        top: var(--top-nav-top);
        right: calc(var(--card-fixed-edge-gap) + var(--top-nav-side-offset));
        z-index: 20;
      }

      .back-nav-button {
        position: fixed;
        top: var(--top-nav-top);
        left: calc(var(--card-fixed-edge-gap) + var(--top-nav-side-offset));
        z-index: 20;
      }

      .back-search-form {
        position: fixed;
        top: var(--top-search-top);
        right: calc(var(--card-fixed-edge-gap) + calc(10px + (var(--app-font-size-offset, 0px) / 2)));
        z-index: 20;
        width: max-content;
        display: grid;
        grid-template-columns: var(--top-search-width) auto;
        gap: var(--top-search-gap);
        align-items: stretch;
      }

      .back-search-input {
        min-width: 0;
        width: var(--top-search-width);
        height: var(--top-search-height);
        border: 1px solid rgba(var(--accent-rgb), 0.2);
        border-radius: var(--top-search-radius);
        background: rgba(255, 255, 255, 0.96);
        padding: 0 var(--top-search-padding-x);
        font-size: var(--top-search-font-size);
        color: var(--text);
      }

      .back-search-input:focus {
        outline: none;
        border-color: rgba(var(--accent-rgb), 0.6);
        box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.12);
      }

      .back-search-submit {
        height: var(--top-search-height);
        border: none;
        border-radius: var(--top-search-radius);
        background: var(--accent);
        color: #ffffff;
        padding: 0 calc(10px + (var(--app-font-size-offset, 0px) / 2));
        font-size: var(--top-search-font-size);
        font-weight: 700;
        cursor: pointer;
      }

      .back-search-submit:hover {
        background: var(--accent-dark);
      }

      .panel {
        --shared-card-margin-top: 16px;
        --shared-card-border: 1px solid var(--border);
        --shared-card-radius: 16px;
        --shared-card-background: #ffffff;
        --shared-card-min-width: 0;
        --shared-card-max-width: 100%;
      }

      .list {
        list-style: none;
        margin: 0;
        padding: 12px;
        display: grid;
        gap: 10px;
        min-width: 0;
      }

      .date-divider {
        display: flex;
        align-items: center;
        gap: 10px;
        color: var(--accent-dark);
        font-size: 13px;
        font-weight: 700;
        padding: 4px 2px 0;
      }

      .date-divider::after {
        content: "";
        flex: 1;
        height: 1px;
        background: rgba(var(--accent-rgb), 0.18);
      }

      .date-group {
        min-width: 0;
      }

      .date-group-list {
        list-style: none;
        margin: 0;
        padding: 8px 0 0;
        display: grid;
        gap: 10px;
        min-width: 0;
      }

      .date-group-list li {
        min-width: 0;
      }

      .list li {
        min-width: 0;
      }

      .item-link {
        --shared-entry-padding: 12px;
        --shared-entry-border-color: rgba(var(--accent-rgb), 0.18);
        --shared-entry-radius: 12px;
        --shared-entry-bg: rgba(var(--accent-rgb), 0.08);
        --shared-entry-hover-bg: rgba(var(--accent-rgb), 0.14);
        --shared-entry-color: var(--text);
        --shared-entry-gap: 12px;
      }

      .item-link.deleted-entry {
        --shared-entry-border-color: rgba(97, 120, 143, 0.18);
        --shared-entry-bg: #f2f4f7;
        --shared-entry-hover-bg: #f2f4f7;
        --shared-entry-color: #8a99a8;
        cursor: default;
        pointer-events: none;
        opacity: 1;
      }

      .item-link.deleted-entry .item-top,
      .item-link.deleted-entry .item-meta {
        color: #8a99a8;
      }

      .item-link.deleted-entry .item-preview {
        color: #7b8b99;
      }

      .item-link.sentence-entry {
        display: grid;
        gap: 4px;
      }

      .item-top {
        font-weight: 700;
      }

      .item-meta {
        color: var(--muted);
        font-size: 13px;
      }

      .item-preview {
        max-width: min(46%, 320px);
        overflow: hidden;
        text-overflow: ellipsis;
        text-align: right;
        white-space: nowrap;
        flex-shrink: 0;
      }

      .empty {
        margin: 0;
        padding: 12px;
        color: var(--muted);
      }

      .pagination {
        display: grid;
        justify-items: stretch;
        gap: 4px;
        padding: 12px 10px 14px;
      }

      .history-filter-summary {
        display: flex;
        flex-wrap: wrap;
        gap: 8px 14px;
        padding: 12px 12px 0;
        color: var(--muted);
        font-size: 12px;
        font-weight: 700;
        text-align: left;
      }

      .history-filter-summary[hidden] {
        display: none !important;
      }

      .history-filter-summary-item {
        white-space: nowrap;
      }

      .pagination-buttons {
        display: flex;
        align-items: center;
        justify-content: flex-start;
        gap: 6px;
        flex-wrap: nowrap;
        width: auto;
      }

      .pagination[hidden] {
        display: none !important;
      }

      .pagination-btn {
        border: 1px solid rgba(var(--accent-rgb), 0.18);
        background: #ffffff;
        color: var(--text);
        border-radius: 6px;
        min-height: 20px;
        width: 52px;
        padding: 0 10px;
        font-size: 9px;
        font-weight: 700;
        cursor: pointer;
        flex: 0 0 52px;
        min-width: 52px;
        text-align: center;
      }

      .pagination-btn:hover {
        background: rgba(var(--accent-rgb), 0.08);
      }

      .pagination-btn.active {
        border-color: var(--accent-dark);
        background: var(--accent);
        color: #ffffff;
      }

      .pagination-btn:disabled {
        opacity: 0.52;
        cursor: default;
      }

      .pagination-status {
        display: block;
        color: var(--muted);
        font-size: 11px;
        font-weight: 700;
        padding: 0 2px;
        text-align: center;
      }

      .filters-row {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-top: 16px;
        flex-wrap: wrap;
        width: 100%;
        max-width: 100%;
        min-width: 0;
      }

      .filter-bar {
        display: flex;
        gap: 5px;
        flex-wrap: wrap;
        margin-top: 0;
        width: auto;
        min-width: 0;
        flex: 1 1 auto;
      }

      .filter-chip {
        border: 1px solid rgba(var(--accent-rgb), 0.22);
        background: #ffffff;
        border-radius: calc(12px + (var(--app-font-size-offset, 0px) / 2));
        min-height: calc(34px + var(--app-font-size-offset, 0px));
        padding: 0 calc(14px + (var(--app-font-size-offset, 0px) / 2));
        font-size: 13px;
        font-weight: 700;
        cursor: pointer;
        color: var(--text);
      }

      .filter-chip.active {
        border-color: var(--accent-dark) !important;
        background: var(--accent) !important;
        color: #ffffff !important;
      }

      .filter-chip.disabled {
        border-color: rgba(99, 121, 143, 0.24) !important;
        background: #f2f4f7 !important;
        color: #98a6b5 !important;
        cursor: not-allowed;
      }

      .filter-chip:disabled {
        opacity: 1;
      }

      .mark-filter-row {
        margin-top: 0;
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex: 1 1 100%;
        min-width: 0;
        gap: 5px;
      }

      .process-filter-wrap {
        position: relative;
        display: inline-flex;
        align-items: center;
        flex-shrink: 0;
      }

      .process-filter-button {
        border: 1px solid rgba(var(--accent-rgb), 0.22);
        background: #ffffff;
        border-radius: 6px;
        min-height: 34px;
        padding: 0 14px;
        font-size: 13px;
        font-weight: 700;
        cursor: pointer;
        color: var(--text);
      }

      .process-filter-button.active {
        border-color: var(--accent);
        background: rgba(var(--accent-rgb), 0.12);
        color: var(--accent);
      }

      .marks {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 4px;
        padding: 0;
        flex: 1 1 auto;
        min-width: 0;
      }

      .mark-action-wrap {
        display: inline-flex;
        align-items: center;
        gap: 4px;
        position: relative;
        flex-shrink: 0;
      }

      .mark-btn {
        border: none;
        background: transparent;
        padding: 0;
        width: 28px;
        height: 28px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        line-height: 0;
        cursor: pointer;
      }

      .mark-action-button {
        border: 1px solid rgba(99, 121, 143, 0.24);
        background: #f2f4f7;
        color: #55697c;
        border-radius: 12px;
        min-height: 34px;
        padding: 0 14px;
        font-size: 13px;
        font-weight: 700;
        cursor: pointer;
        white-space: nowrap;
      }

      .mark-action-button:hover {
        background: #e7ebf0;
      }

      .mark-action-button:disabled {
        opacity: 0.65;
        cursor: wait;
      }

      .mark-action-menu {
        position: absolute;
        top: calc(100% + 8px);
        right: 0;
        left: auto;
        width: max-content;
        min-width: 0;
        max-width: calc(100vw - 48px);
        border: 1px solid rgba(var(--accent-rgb), 0.16);
        border-radius: 12px;
        background: #ffffff;
        box-shadow: 0 14px 28px rgba(20, 42, 62, 0.14);
        padding: 6px;
        display: none;
        grid-template-columns: 1fr;
        gap: 4px;
        z-index: 30;
      }

      .mark-action-menu.open {
        display: grid;
      }

      .mark-action-option {
        border: none;
        background: transparent;
        border-radius: 10px;
        min-height: 34px;
        padding: 0 10px;
        text-align: left;
        font-size: 13px;
        font-weight: 700;
        color: var(--text);
        cursor: pointer;
        width: 100%;
        white-space: nowrap;
      }

      .mark-action-option:hover {
        background: rgba(var(--accent-rgb), 0.08);
      }

      .mark-action-option.clear {
        color: #264b85;
      }

      .mark-action-option.clear:hover {
        background: rgba(59, 130, 246, 0.08);
      }

      .mark-action-option.delete {
        color: #a12d2d;
      }

      .modal-backdrop {
        position: fixed;
        inset: 0;
        background: rgba(14, 28, 40, 0.42);
        display: none;
        align-items: center;
        justify-content: center;
        padding: 20px;
        z-index: 1000;
      }

      .modal-backdrop.open {
        display: flex;
      }

      .modal {
        width: min(100%, 420px);
        border-radius: 18px;
        background: rgba(255, 255, 255, 0.98);
        border: 1px solid var(--border);
        box-shadow: 0 24px 45px rgba(18, 41, 61, 0.18);
        padding: 18px;
      }

      .modal-title {
        margin: 0;
        font-size: 20px;
        font-weight: 800;
      }

      .modal-text {
        margin: 10px 0 0;
        line-height: 1.7;
        color: var(--text);
        white-space: pre-line;
        word-break: break-word;
        overflow-wrap: anywhere;
      }

      .modal-actions {
        display: flex;
        justify-content: flex-end;
        gap: 10px;
        margin-top: 18px;
      }

      .modal-btn {
        border: 1px solid rgba(var(--accent-rgb), 0.2);
        background: #ffffff;
        color: var(--text);
        border-radius: 12px;
        padding: 10px 14px;
        font-size: 14px;
        font-weight: 700;
        cursor: pointer;
      }

      .modal-btn.danger {
        border-color: rgba(185, 56, 56, 0.22);
        background: #fff5f5;
        color: #a12d2d;
      }

      .modal-btn.clear-action {
        border-color: rgba(51, 98, 166, 0.22);
        background: #ffffff;
        color: #264b85;
      }

      .modal-btn.delete-action {
        border-color: rgba(185, 56, 56, 0.22);
        background: #ffffff;
        color: #a12d2d;
      }

      .modal-btn:disabled {
        opacity: 0.65;
        cursor: wait;
      }

      .mark-action-status {
        margin: 0;
        color: var(--muted);
        font-size: 12px;
      }

      .mark-icon {
        width: 22px;
        height: 22px;
        stroke: #999;
        fill: none;
        stroke-width: 2.4;
        stroke-linecap: round;
        stroke-linejoin: round;
        transition: 0.2s;
      }

      .mark-icon.active {
        fill: currentColor;
        stroke: currentColor;
      }

      .mark-icon:hover {
        transform: scale(1.08);
      }

      .mark-circle.active { color: #f44336; }
      .mark-cross.active { color: #2196f3; }
      .mark-triangle.active { color: #4caf50; }
      .mark-square.active { color: #ff9800; }
      .mark-star.active { color: #ffeb3b; }
      .mark-heart.active { color: #e91e63; }

      @media (max-width: 720px) {
        .app {
          padding: 20px;
          border-radius: 20px;
        }

        .filters-row {
          flex-direction: column;
          align-items: stretch;
          gap: 8px;
        }

        .filter-bar {
          flex-wrap: wrap;
          gap: 5px;
          width: 100%;
          max-width: 100%;
          margin-top: 0;
        }

        .filter-chip {
          flex: 0 0 auto;
          white-space: nowrap;
          min-height: calc(26px + var(--app-font-size-offset, 0px));
          padding: 0 calc(10px + (var(--app-font-size-offset, 0px) / 2));
          font-size: 10px;
        }

        .mark-filter-row {
          margin-top: 0;
          justify-content: space-between;
          flex-basis: 100%;
        }

        .process-filter-button {
          min-height: 26px;
          padding: 0 10px;
          font-size: 10px;
        }

        .marks {
          gap: 2px;
        }

        .mark-action-wrap {
          gap: 2px;
        }

        .mark-btn {
          width: 22px;
          height: 22px;
        }

        .mark-icon {
          width: 17px;
          height: 17px;
          stroke-width: 2.2;
        }

        .mark-action-button {
          min-height: 26px;
          padding: 0 10px;
          font-size: 10px;
        }

        .mark-action-menu {
          max-width: calc(100vw - 48px);
        }

        .mark-action-option {
          min-height: 34px;
          font-size: 13px;
          padding: 0 8px;
        }
      }