:root {
            --manual-primary: #B32A50;
            --manual-primary-light: #fceef2;
            --manual-primary-gradient: linear-gradient(135deg, #B32A50 0%, #d44d6e 100%);

            --manual-text: #1e1e2f;
            --manual-text-secondary: #555570;

            --manual-bg: #fafbfe;
            --manual-bg-alt: #f3f4f9;
            --manual-bg-section-alt: #faf5f7;
            --manual-white: #ffffff;
            --manual-border: #e4e7f0;

            --manual-gold: #A8894C;
            --manual-gold-gradient: linear-gradient(135deg, #faf6ee 0%, #ece2cf 100%);

            --manual-success: #1f9723;
            --manual-success-bg: #e8f8e9;
            --manual-warn: #916914;
            --manual-warn-bg: #fffac5;
            --manual-danger: #B32A50;
            --manual-danger-bg: #FFEBEE;

            --manual-blue-label: #1a3fa0;
            --manual-blue-bg: #eef3ff;

            --manual-font: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft JhengHei', sans-serif;

            --manual-radius-md: 12px;
            --manual-radius-lg: 20px;
            --manual-radius-full: 9999px;

            --manual-shadow-sm: 0 8px 8px rgba(0, 0, 0, 0.06);
            --manual-shadow-md: 0 20px 20px rgba(0, 0, 0, 0.08);
            --manual-shadow-primary: 0 16px 16px rgba(179, 42, 80, 0.2);

            --manual-ease: cubic-bezier(0.4, 0, 0.2, 1);
            --manual-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --manual-max-w: 1400px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
        }

        #IRT-Manual {
            margin: 0;
            padding: 0;
            font-family: var(--manual-font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--manual-text);
            background-color: var(--manual-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        .page-header {
            background: var(--manual-white);
            color: var(--manual-text);
            text-align: center;
            padding: 1.2em 1.5em 0.8em;
            border-bottom: none;
            position: relative;
        }

        .page-header::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: var(--manual-primary);
            margin: 0.6em auto 0;
            border-radius: 2px;
            opacity: 0.5;
        }

        .page-header h1,
        .page-header h2 {
            margin: 0;
            font-size: 1.6em;
            font-weight: 900;
            letter-spacing: 0.06em;
            color: var(--manual-primary);
        }

        #IRT-Manual article{
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0;
        }

        #IRT-Manual section {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
        }

        #IRT-Manual input[type="radio"] {
            display: none;
        }

        /* 大標題（頁籤）改成漢堡排 */
        .manual-tab-bar {
            width: 100%;
            position: sticky;
            top: 0;
            z-index: 3;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 2px solid rgba(179, 42, 80, 0.12);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            padding: 10px 24px;
            transition: all var(--manual-transition);
        }

        .manual-tab-container {
            max-width: var(--manual-max-w);
            margin: 0 auto;
            padding: 0 1.5em;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: relative;
            gap: 16px;
        }

        .manual-tab-title-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            cursor: pointer;
            user-select: none;
            padding: 4px 10px;
            border-radius: var(--manual-radius-md);
            transition: background var(--manual-transition);
        }

        .manual-tab-title-wrap:hover {
            background: var(--manual-bg-alt);
        }

        #currentTabTitle {
            margin: 0 !important;
            padding: 0 !important;
            background: transparent !important;
            border: none !important;
            border-radius: 0 !important;
            font-size: 2.15em !important;
            font-weight:700 !important;
            color: var(--manual-text) !important;
            letter-spacing: 0.03em !important;
            display: flex !important;
            align-items: center !important;
            gap: 10px !important;
            line-height: 1.2 !important;
            transition: color var(--manual-transition) !important;
        }

        #currentTabTitleText {
            font-size: inherit;
            font-weight: inherit;
            color: inherit;
        }

        .tab-title-chevron {
            width: 22px;
            height: 22px;
            fill: var(--manual-primary);
            opacity: 0.65;
            transition: transform var(--manual-transition), opacity var(--manual-transition);
        }

        .manual-tab-bar.is-open .tab-title-chevron {
            transform: rotate(180deg);
            opacity: 1;
        }

        /* 漢堡排切換按鈕 */
        .tab-menu-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 9px 18px;
            border-radius: var(--manual-radius-full);
            background: var(--manual-white);
            border: 1.5px solid var(--manual-border);
            color: var(--manual-text);
            font-family: inherit;
            font-size: 0.95em;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--manual-transition);
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
        }

        .tab-menu-btn:hover {
            border-color: var(--manual-primary);
            color: var(--manual-primary);
            background: var(--manual-primary-light);
            box-shadow: 0 4px 12px rgba(179, 42, 80, 0.12);
        }

        .manual-tab-bar.is-open .tab-menu-btn {
            border-color: var(--manual-primary);
            color: var(--manual-white);
            background: var(--manual-primary);
        }

        .hamburger-box {
            width: 18px;
            height: 14px;
            position: relative;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .hamburger-line {
            display: block;
            width: 100%;
            height: 2px;
            background: currentColor;
            border-radius: 2px;
            transition: all 0.25s ease-in-out;
            transform-origin: center;
        }

        .manual-tab-bar.is-open .hamburger-line:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }

        .manual-tab-bar.is-open .hamburger-line:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }

        .manual-tab-bar.is-open .hamburger-line:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        /* 漢堡排下拉選單 (Dropdown) */
        .tab-dropdown {
            position: absolute;
            top: calc(100% + 10px);
            right: 0;
            width: 360px;
            max-width: calc(100vw - 32px);
            background: var(--manual-white);
            border-radius: var(--manual-radius-lg);
            border: 1px solid var(--manual-border);
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.12), 0 4px 12px rgba(0, 0, 0, 0.05);
            padding: 16px;
            display: none;
            flex-direction: column;
            gap: 12px;
            z-index: 101;
            transform-origin: top right;
            animation: tabDropdownIn 0.25s var(--manual-ease);
        }

        .manual-tab-bar.is-open .tab-dropdown {
            display: flex;
        }

        @keyframes tabDropdownIn {
            from {
                opacity: 0;
                transform: translateY(-8px) scale(0.97);
            }
            to {
                opacity: 1;
                transform: translateY(0) scale(1);
            }
        }

        .dropdown-intro {
            font-size: 0.85em;
            font-weight: 700;
            color: var(--manual-text-secondary);
            padding-bottom: 8px;
            border-bottom: 1px solid var(--manual-border);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .dropdown-options {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .dropdown-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 14px;
            border-radius: var(--manual-radius-md);
            border: 1px solid transparent;
            background: var(--manual-bg);
            cursor: pointer;
            transition: all var(--manual-transition);
            text-decoration: none;
            color: inherit;
        }

        .dropdown-item:hover {
            background: var(--manual-primary-light);
            border-color: rgba(179, 42, 80, 0.25);
            transform: translateX(4px);
        }

        .dropdown-item-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--manual-primary);
            background: var(--manual-white);
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.06);
            flex-shrink: 0;
            transition: all var(--manual-transition);
        }

        .dropdown-item-icon svg {
            width: 20px;
            height: 20px;
            fill: currentColor;
        }

        .dropdown-item:hover .dropdown-item-icon {
            background: var(--manual-primary);
            color: var(--manual-white);
            box-shadow: 0 4px 10px rgba(179, 42, 80, 0.25);
        }

        .dropdown-item-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .dropdown-item-title {
            font-size: 1em;
            font-weight: 700;
            color: var(--manual-text);
        }

        .dropdown-item:hover .dropdown-item-title {
            color: var(--manual-primary);
        }

        .dropdown-item-desc {
            font-size: 0.82em;
            color: var(--manual-text-secondary);
            line-height: 1.4;
        }

        .dropdown-item-arrow {
            width: 16px;
            height: 16px;
            fill: var(--manual-text-secondary);
            transition: transform var(--manual-transition), fill var(--manual-transition);
            flex-shrink: 0;
        }

        .dropdown-item:hover .dropdown-item-arrow {
            fill: var(--manual-primary);
            transform: translateX(3px);
        }

        /* 響應式調整 */
        @media (max-width: 640px) {
            .manual-tab-bar {
                padding: 5px;
                margin:0 -0.5em;
                width: calc(100% + 1em);
            }
            .manual-tab-container {
                padding: 0;
            }
            .current-tab-title {
                font-size: 1.25em;
            }
            .tab-category-badge {
                font-size: 0.72em;
                padding: 2px 8px;
            }
            .tab-menu-btn .btn-text {
                display: none;
            }
            .tab-menu-btn {
                padding: 8px 12px;
            }
            .tab-dropdown {
                right: 0;
                left: 0;
                width: auto;
            }
        }

        /* 舊版 tab-button 保留相容設定 */
        #IRT-Manual label.tab-button {
            display: none;
        }

        #IRT-Manual .tab-content {
            display: none;
            flex-direction: column;
            flex-wrap: wrap;
            animation: fadeIn 0.4s var(--manual-ease);
        }

        #IRT-Manual input#tab-law:checked ~ .tab-content-area > #law,
        #IRT-Manual input#tab-essay:checked ~ .tab-content-area > #essay,
        #IRT-Manual input#tab-choice:checked ~ .tab-content-area > #choice,
        #IRT-Manual > article > input:first-child:checked ~ .tab-content-area > .tab-content:first-child,
        #IRT-Manual > article > input:nth-child(2):checked ~ .tab-content-area > .tab-content:nth-child(2),
        #IRT-Manual > article > input:nth-child(3):checked ~ .tab-content-area > .tab-content:nth-child(3) {
            display: block;
        }

        .tab-content-area {
            width: 100%;
            padding-top: 30px;
        }

        #IRT-Manual .btn-menu {
            display: inline-flex;
            padding: 10px 22px;
            background: var(--manual-primary-gradient);
            color: #fff;
            text-decoration: none;
            border-radius: var(--manual-radius-full);
            justify-content: center;
            margin: 0.75em 6px 0;
            font-size: 0.95em;
            font-weight: 500;
            font-family: var(--manual-font);
            transition: all var(--manual-transition);
            box-shadow: var(--manual-shadow-primary);
            letter-spacing: 0.03em;
        }

        #IRT-Manual .btn-link {
            background: var(--manual-primary-gradient);
            color: #fff;
            text-decoration: none;
            font-size: 0.9em;
            padding: 2px 8px;
            border-radius: 12px;
        }

        #IRT-Manual .btn-menu:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(179, 42, 80, 0.3);
            filter: brightness(1.08);
        }

        #IRT-Manual .btn-menu:active {
            transform: translateY(0);
        }

        #IRT-Manual h2 {
            display: inline-flex;
            padding: 0.6em 2.5em;
            margin: 2em auto 0.5em;
            color: var(--manual-primary);
            background: var(--manual-primary-light);
            font-size: 1.3em;
            font-weight: 700;
            border-radius: var(--manual-radius-full);
            border: 1px solid rgba(179, 42, 80, 0.12);
            letter-spacing: 0.03em;
        }

        #IRT-Manual h3 {
            margin-top: 1em;
        }

        #IRT-Manual h3 {
            text-align: left;
            width: 100%;
            margin: 1.25em 0 0;
            color: var(--manual-text);
            font-size: 1.15em;
            font-weight: 700;
            line-height: 1.5;
            padding-left: 0.6em;
            border-left: 4px solid var(--manual-primary);
        }

        #IRT-Manual .chapter {
            width: 100%;
            text-align: center;
        }

        #IRT-Manual .tab-content-area section {
            padding: 30px 0;
        }

        #IRT-Manual .tab-content-area section:nth-child(odd) {
            background-color: var(--manual-bg-section-alt);
        }

        #IRT-Manual .flex-row {
            max-width: var(--manual-max-w);
            width: 100%;
            display: flex;
            align-self: center;
            flex-wrap: wrap;
            margin: 10px auto 20px;
            padding: 0 1.5em;
            gap: 0 30px;
        }

        #IRT-Manual .left,
        #IRT-Manual .right {
            width: calc(50% - 15px);
            padding: 10px 0;
            box-sizing: border-box;
        }

        #IRT-Manual .right {
            order: 2;
        }

        #IRT-Manual p {
            margin: 0.3em 1em;
        }

        #IRT-Manual ul,
        #IRT-Manual ol {
            margin-top: 8px;
            margin-bottom: 8px;
        }

        #IRT-Manual li {
            margin-bottom: 0.5em;
        }

        #IRT-Manual .note {
            color: var(--manual-primary);
            font-weight: bold;
        }


        #IRT-Manual img {
            max-width: 100%;
            height: auto;
            margin: 0.75em auto;
            display: block;
        }

        #IRT-Manual .grid {
            display: flex;
            width: 100%;
            max-width: 800px;
            justify-content: center;
            flex-wrap: wrap;
            margin: 0 auto;
        }

        #IRT-Manual .grid.grid-2 {
            display: grid;
            grid-template-columns: minmax(25%, 250px) 1fr;
            gap: 0px 0px;
            grid-auto-flow: row;
            border-radius: var(--manual-radius-md);
            overflow: hidden;
            border: 1px solid var(--manual-border);
            box-shadow: var(--manual-shadow-sm);
        }

        #IRT-Manual .grid div {
            display: flex;
            align-items: center;
            justify-content: flex-start;
            padding: 10px;
            border: 1px solid var(--manual-border);
            margin: 0 -1px -1px 0;
            font-size: 0.95em;
            /* line-height: 1.6; */
            flex-wrap: wrap;
        }

        #IRT-Manual .grid-2 div:nth-child(odd) {
            font-weight: bold;
            color: var(--manual-blue-label);
            align-items: center;
            justify-content: space-between;
            background-color: var(--manual-blue-bg);
        }

        #IRT-Manual .grid-2 div:nth-child(odd) img {
            height: 36px;
            margin: 0 5px;
        }

        #IRT-Manual .grid.grid-3 {
            display: grid;
            grid-template-columns: minmax(45%, 280px) 1fr;
            gap: 0px 0px;
            grid-auto-flow: row;
            max-width: 992px;
            padding-bottom: 0;
            border-radius: var(--manual-radius-md);
            overflow: hidden;
            border: 1px solid var(--manual-border);
            box-shadow: var(--manual-shadow-sm);
        }

        #IRT-Manual .grid-3 div b {
            font-weight: bold;
            color: var(--manual-text);
            align-items: center;
            justify-content: space-between;
        }

        #IRT-Manual .grid.grid-3:nth-child(1) {
            background-color: var(--manual-primary-light);
        }

        .best {
            background-color: var(--manual-success-bg);
            color: var(--manual-success);
        }

        .notice {
            background-color: var(--manual-warn-bg);
            color: var(--manual-warn);
        }

        .noway {
            background-color: var(--manual-danger-bg);
            color: var(--manual-danger);
        }

        #IRT-Manual .tips {
            background: var(--manual-gold-gradient);
            border-radius: var(--manual-radius-lg);
            padding: 1.5em 2em 2em;
            margin: 20px auto;
            width: 100%;
            max-width: 960px;
            border: 1px solid rgba(168, 137, 76, 0.15);
            box-shadow: var(--manual-shadow-sm);
            transition: box-shadow var(--manual-transition);
        }

        #IRT-Manual .tips:hover {
            box-shadow: var(--manual-shadow-md);
        }

        #IRT-Manual .alert-tips {
            background: linear-gradient(135deg, #fcfcfc 0%, #fff 100%);
            border: 2px solid rgba(179, 42, 80, 0.2);
            border-left: 6px solid var(--manual-primary);
            box-shadow: 0 4px 24px rgba(179, 42, 80, 0.12);
            position: relative;
            margin-top: 36px;
        }

        #IRT-Manual .alert-tips::before {
            content: "特別提醒";
            position: absolute;
            top: -16px;
            left: 20px;
            background: var(--manual-primary-gradient);
            color: #fff;
            padding: 6px 16px;
            border-radius: var(--manual-radius-full);
            font-size: 0.9em;
            font-weight: 700;
            letter-spacing: 0.05em;
            box-shadow: 0 4px 12px rgba(179, 42, 80, 0.3);
            animation: pulse-glow 2s infinite;
        }

        #IRT-Manual .alert-tips h3 {
            color: var(--manual-primary);
            margin-top: 0.5em;
        }

        #IRT-Manual .alert-tips h3:after {
            border-bottom-color: var(--manual-primary);
            opacity: 0.7;
        }

        @keyframes pulse-glow {
            0% {
                box-shadow: 0 0 0 0 rgba(179, 42, 80, 0.5);
            }

            70% {
                box-shadow: 0 0 0 8px rgba(179, 42, 80, 0);
            }

            100% {
                box-shadow: 0 0 0 0 rgba(179, 42, 80, 0);
            }
        }

        #IRT-Manual .tips h3 {
            margin: 1em 0 0.5em;
            border-left-width: 0;
        }

        #IRT-Manual .tips h3:after {
            content: " ";
            display: block;
            width: 80px;
            padding-top: 12px;
            border-bottom: 3px solid var(--manual-gold);
            opacity: 0.5;
        }

        #IRT-Manual .tips img {
            display: block;
            margin: 1em auto;
            border-radius: var(--manual-radius-md);
            box-shadow: var(--manual-shadow-md);
            max-width: 700px;
            border: none;
        }

        #IRT-Manual .tips .p-item {
            margin-top: 1.5em;
            margin-bottom: 0.75em;
            font-size: 1.05em;
            text-indent: 0;
            font-weight: 500;
        }

        .back-to-top {
            position: fixed;
            bottom: 2em;
            right: 2em;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--manual-primary-gradient);
            color: #fff;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--manual-shadow-primary);
            transition: all var(--manual-transition);
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            z-index: 100;
        }

        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .back-to-top:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(179, 42, 80, 0.35);
        }

        .back-to-top svg {
            width: 22px;
            height: 22px;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(8px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ==========================================================================
           建議使用裝置卡片群組 (Device Recommendation Bar)
           ========================================================================== */
        .device-recommendation-bar {
            width: 100%;
        }

        .device-card {
            max-width: var(--manual-max-w);
            margin: 0 auto;
            padding: 2em 1.5em 3em;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 16px;
        }

        .device-item {
            display: flex;
            align-items: flex-start;
            gap: 4px;
            padding: 30px 24px 10px;
            border-radius: var(--manual-radius-md);
            background: var(--manual-bg);
            border: 1px solid var(--manual-border);
            transition: all var(--manual-transition);
            box-shadow: var(--manual-shadow-sm);
        }

        .device-item:hover {
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
        }
        .device-item {
            position: relative;
        }

        .badge-status {
            font-size: 0.75em;
            padding: 3px 8px;
            border-radius: var(--manual-radius-md) 0 var(--manual-radius-md) 0;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: 0.02em;
            position: absolute;
            top:0;
            left:0;
            width:64px;
            text-align: center;
        }

        .badge-status.best {
            background: var(--manual-success);
            color: white;
        }

        .badge-status.okay {
            background: var(--manual-blue-label);
            color: white;
        }

        .badge-status.not-rec {
            background: var(--manual-danger);
            color: white;
        }
        .badge-sys {
            background: var(--manual-border);
            font-size: 0.9em;
            font-weight: normal;
            padding: 3px 10px;
            border-radius: var(--manual-radius-full);
        }
       
        .device-info h4 {
            font-size: 1em;
            font-weight: 700;
            margin: 0 0 4px !important;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            color: var(--manual-text);

        }

        .device-info p {
            font-size: 0.95em;
            color: var(--manual-text-secondary);
            margin: 0 !important;
        }

        .law-layout {
            display: grid;
            grid-template-columns: 270px minmax(0, 1fr);
            gap: 28px;
            align-items: start;
            max-width: var(--manual-max-w);
            margin: 0 auto;
            padding: 0 1.5em 40px;
            width: 100%;
        }

        .sidebar-wrapper {
            position: sticky;
            top: 75px;
            z-index: 2;
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-height: calc(100vh - 90px);
        }

        .sidebar-search {
            background: var(--manual-white);
            border-radius: var(--manual-radius-md);
            padding: 10px 12px;
            border: 1px solid var(--manual-border);
            box-shadow: var(--manual-shadow-sm);
        }

        .search-box {
            position: relative;
            display: flex;
            align-items: center;
            width: 100%;
        }

        .search-icon {
            position: absolute;
            left: 10px;
            width: 16px;
            height: 16px;
            fill: var(--manual-text-secondary);
            pointer-events: none;
        }

        .search-input {
            width: 100%;
            padding: 8px 12px 8px 34px;
            border: 1px solid var(--manual-border);
            border-radius: var(--manual-radius-full);
            font-size: 0.95em;
            font-family: inherit;
            background: var(--manual-bg);
            color: var(--manual-text);
            transition: all var(--manual-transition);
        }

        .search-input:focus {
            outline: none;
            border-color: var(--manual-primary);
            box-shadow: 0 0 0 3px rgba(179, 42, 80, 0.12);
            background: var(--manual-white);
        }

        .sidebar-toc {
            background: var(--manual-white);
            border-radius: var(--manual-radius-md);
            padding: 16px 14px;
            border: 1px solid var(--manual-border);
            box-shadow: var(--manual-shadow-sm);
            overflow-y: auto;
            flex: 1;width: 100%;
        }

        .toc-title {
            font-size: 0.95em;
            font-weight: 700;
            color: var(--manual-text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 10px;
            padding-bottom: 8px;
            border-bottom: 1px solid var(--manual-border);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .toc-title svg {
            width: 16px;
            height: 16px;
            fill: var(--manual-primary);
        }

        .toc-menu {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 3px;
        }

        .toc-menu li {
            margin: 0!important;
        }

        .toc-menu a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 7px 10px;
            /* border-radius: 6px; */
            text-decoration: none;
            color: var(--manual-text-secondary);
            font-size: 0.95em;
            font-weight: 500;
            transition: all var(--manual-transition);
        }

        .toc-menu a:hover {
            background: var(--manual-primary-light);
            color: var(--manual-primary);
        }

        .toc-menu a.active {
            background: var(--manual-primary-light);
            color: var(--manual-primary);
            font-weight: 700;
            border-left: 3px solid var(--manual-primary);
            padding-left: 7px;
        }

        .toc-num {
            font-size: 0.72em;
            font-weight: 700;
            background: var(--manual-bg-alt);
            padding: 2px 6px;
            border-radius: 4px;
            color: var(--manual-text-secondary);
            min-width: 26px;
            text-align: center;
        }

        .toc-menu a.active .toc-num {
            background: var(--manual-primary);
            color: white;
        }

        .law-content {
            min-width: 0;
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        /* ==========================================================================
           考前速覽卡片專區 (Quick Prep Section)
           ========================================================================== */
        .quick-prep-container {
            background: var(--manual-white);
            border-radius: var(--manual-radius-lg);
            padding: 1.5em 20px 2em!important;
            border: 2px solid var(--manual-gold);
            box-shadow: var(--manual-shadow-md);
            background-image: linear-gradient(135deg, #ffffff 0%, #faf6ee 100%);
            scroll-margin-top: 80px;
            width: 100%;
        }

        .quick-prep-header {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 1px solid rgba(168, 137, 76, 0.25);
            flex-wrap: wrap;
            gap: 10px;
        }

        .quick-prep-title {
            font-size: 1.25em;
            font-weight: 800;
            color: var(--manual-text);
            display: flex;
            align-items: center;
            gap: 8px;
            margin: 0 auto!important;
        }

        .quick-prep-title svg {
            width: 22px;
            height: 22px;
            fill: var(--manual-gold);
        }

        .quick-badge {
            background: var(--manual-gold);
            color: white;
            font-size: 0.75em;
            padding: 3px 10px;
            border-radius: var(--manual-radius-full);
            font-weight: 700;
            letter-spacing: 0.5px;
        }

        .quick-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 14px;
            width: 100%;
        }

        .quick-card {
            background: var(--manual-white);
            border-radius: var(--manual-radius-md);
            padding: 16px 12px;
            border: 1px solid rgba(168, 137, 76, 0.22);
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
            transition: all var(--manual-transition);
        }

        .quick-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(168, 137, 76, 0.18);
            border-color: var(--manual-gold);
        }

        .quick-card-title{
            width:100%;
            display:flex;
            align-items:center;
            gap: 12px;
        }
        .quick-card-num {
            width: 28px;
            height: 28px;
            background: #FAF6EE;
            color: var(--manual-gold);
            border-radius: 50%;
            font-weight: 900;
            font-size: 0.9em;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 8px;
            border: 1px solid rgba(168, 137, 76, 0.35);
        }

        .quick-card h4 {
            /* font-size: 0.95em; */
            font-weight: 700;
            color: var(--manual-text);
            margin: 0 0 6px;
            border-left: none !important;
            padding-left: 0 !important;
        }

        .quick-card p {
            font-size: 0.95em;
            color: var(--manual-text-secondary);
            /* line-height: 1.55; */
            margin: 0;
        }

        .shortcut-container {
            margin-top: 24px;
            padding-top: 18px;
            border-top: 1px dashed rgba(168, 137, 76, 0.35);
        }

        .shortcut-title {
            font-size: 0.95em;
            font-weight: 700;
            color: var(--manual-gold);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .shortcut-title svg {
            width: 18px;
            height: 18px;
            fill: currentColor;
        }

        .shortcut-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 8px;
            font-size: 0.9em;
            background: var(--manual-white);
            border-radius: var(--manual-radius-md);
            overflow: hidden;
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
        }

        .shortcut-table th,
        .shortcut-table td {
            padding: 10px 14px;
            border: 1px solid var(--manual-border);
            text-align: left;
        }

        .shortcut-table th {
            background: var(--manual-bg-alt);
            font-weight: 700;
            color: var(--manual-text);
        }

        /* ==========================================================================
           章節卡片區塊樣式 (Section Block Cards)
           ========================================================================== */
        .section-card {
            background: var(--manual-white);
            border-radius: var(--manual-radius-lg);
            padding: 28px 30px;
            border: 1px solid var(--manual-border);
            box-shadow: var(--manual-shadow-sm);
            scroll-margin-top: 80px;
            width: 100%;
            transition: box-shadow var(--manual-transition);
        }

        .section-card:hover {
            box-shadow: var(--manual-shadow-md);
        }

        .section-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width:100%;
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--manual-bg-alt);
            flex-wrap: wrap;
            gap: 8px;
        }

        .section-card-title {
            font-size: 1.25em;
            font-weight: 800;
            color: var(--manual-text);
            margin: 0 auto!important;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .section-card-tag {
            font-size: 0.75em;
            font-weight: 700;
            color: var(--manual-primary);
            background: var(--manual-primary-light);
            padding: 3px 10px;
            border-radius: var(--manual-radius-full);
            letter-spacing: 0.5px;
        }

        .section-card h3 {
            text-align: left;
            width: 100%;
            margin: 1.25em 0 0.6em;
            color: var(--manual-text);
            font-size: 1.1em;
            font-weight: 700;
            line-height: 1.5;
            padding-left: 0.6em;
            border-left: 4px solid var(--manual-primary);
        }

        .section-card h4 {
            font-size: 1.15em;
            font-weight: 700;
            color: var(--manual-text);
            margin: 1.2em 0 0;
            padding: 6px 16px;
            width: 100%;
            background-color: var(--manual-blue-bg);
            border-radius: 6px;
        }

        /* ==========================================================================
           作答功能拆解卡片 (10 Feature Breakdown Grid)
           ========================================================================== */
        .ui-feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 12px;
            margin: 0 1.5em 10px;
            width: 100%;
        }

        .ui-feature-card {
            background: var(--manual-bg);
            padding: 12px 14px;
            border-radius: 8px;
            border: 1px solid var(--manual-border);
            border-left: 4px solid var(--manual-primary);
            box-shadow: 0 1px 3px rgba(0,0,0,0.03);
            transition: all var(--manual-transition);
        }

        .ui-feature-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(179, 42, 80, 0.08);
            background: var(--manual-white);
        }

        .ui-feature-title {
            /* font-size: 0.9em; */
            font-weight: 700;
            color: var(--manual-primary);
            margin-bottom: 2px;
            display: block;
        }

        .ui-feature-desc {
            font-size: 0.95em;
            color: var(--manual-text-secondary);
            /* line-height: 1.45; */
            margin: 0;
        }

        /* ==========================================================================
           Callout 提示框 (無 Emoji 語意化設計)
           ========================================================================== */
        .callout {
            border-radius: var(--manual-radius-md);
            padding: 14px 18px;
            margin: 16px 16px 0;
            display: flex;
            gap: 12px;
            align-items: flex-start;
            width: 85%;
            max-width: 780px;
        }

        .callout-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            margin-top: 2px;
            fill: currentColor;
        }

        .callout.info {
            background: var(--manual-blue-bg);
            border-left: 4px solid var(--manual-blue-label);
            color: #1E3A8A;
        }

        .callout.warning {
            background: var(--manual-warn-bg);
            border-left: 4px solid var(--manual-warn);
            color: #78350F;
        }

        .callout.danger {
            background: var(--manual-danger-bg);
            border-left: 4px solid var(--manual-danger);
            color: #881337;
        }

        .callout.success {
            background: var(--manual-success-bg);
            border-left: 4px solid var(--manual-success);
            color: #064E3B;
        }

        .callout-content {
            flex: 1;
        }

        .callout-content strong {
            display: block;
            margin-bottom: 3px;
            font-size: 0.95em;
        }

        /* FAQ Accordion */
        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin: 16px;
        }

        .faq-item {
            border: 1px solid var(--manual-border);
            border-radius: var(--manual-radius-md);
            overflow: hidden;
            background: var(--manual-white);
            transition: all var(--manual-transition);
        }

        .faq-item.active {
            border-color: var(--manual-primary);
            box-shadow: var(--manual-shadow-sm);
        }

        .faq-question {
            padding: 14px 18px;
            font-weight: 700;
            color: var(--manual-text);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
            background: var(--manual-white);
            transition: all var(--manual-transition);
        }

        .faq-question:hover {
            background: var(--manual-bg);
            color: var(--manual-primary);
        }

        .faq-icon {
            width: 18px;
            height: 18px;
            fill: var(--manual-text-secondary);
            transition: transform 0.25s ease;
            flex-shrink: 0;
        }

        .faq-item.active .faq-icon {
            transform: rotate(180deg);
            fill: var(--manual-primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: var(--manual-bg);
        }

        .faq-item.active .faq-answer {
            max-height: 500px;
            border-top: 1px solid var(--manual-border);
        }

        .faq-answer-inner {
            padding: 14px 18px;
            color: var(--manual-text-secondary);
        }
        #IRT-Manual kbd {
            display: inline-block;
            padding: 1px 6px;
            line-height: 1.6;
            font-family: monospace;
            font-size: 0.85em;
            font-weight: 700;
            color: var(--manual-text);
            background-color: var(--manual-white);
            border: 1px solid #CBD5E1;
            border-radius: 4px;
            box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
        }
        #IRT-Manual video {
            display: block;
            width: 100%;
            max-width:764px;
            height: auto;
            margin: 12px auto;
            border-radius: 8px;
            border: 1px solid #e2e8f0;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
            background-color: #000;
        }
        @media screen and (max-width: 1024px) {
            #IRT-Manual .flex-row {
                padding: 0 1.25em;
            }

            .law-layout {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .sidebar-wrapper {
                position: static;
                max-height: none;
            }

            .sidebar-toc {
                max-height: 260px;
            }
        }

        @media screen and (max-width: 767px) {
            .page-header {
                padding: 1em 1em 0.6em;
            }

            .page-header h1 {
                font-size: 1.35em;
            }

            #IRT-Manual {
                padding: 0.6em 0.8em;
            }

            #IRT-Manual label {
                font-size: 0.9em;
                padding: 9px 16px;
            }

            #IRT-Manual .left,
            #IRT-Manual .right {
                width: 100%;
                order: unset;
            }

            #IRT-Manual h2 {
                font-size: 1.1em;
                padding: 0.5em 1.5em;
            }

            #IRT-Manual h3 {
                font-size: 1.05em;
            }

            #IRT-Manual .btn-menu {
                padding: 8px 14px;
                font-size: 0.9em;
                margin: 0.5em 4px 0;
            }

            #IRT-Manual .grid.grid-3:nth-child(1) {
                display: none;
            }

            #IRT-Manual .grid.grid-3 {
                grid-template-columns: 1fr;
                border-radius: var(--manual-radius-md);
            }

            #IRT-Manual .grid.grid-3 div:not(:nth-child(2n+1)) {
                border-width: 0 1px;
            }

            #IRT-Manual .grid.grid-3 div:nth-child(2n+1) {
                margin-top: 0;
                background-color: var(--manual-blue-bg);
                border-top: 1px solid var(--manual-border);
            }

            #IRT-Manual .grid.grid-2 {
                grid-template-columns: minmax(80px, 160px) 1fr;
            }

            #IRT-Manual .tips {
                padding: 1em 1.25em 1.5em;
                border-radius: var(--manual-radius-md);
            }

            #IRT-Manual .tips img {
                max-width: 100%;
            }

            .quick-prep-container {
                padding: 18px 16px;
            }

            .section-card {
                padding: 18px 16px;
            }

            .device-card {
                grid-template-columns: 1fr;
                padding: 14px 0.5em;
            }

            .device-item {
                padding: 24px 12px 10px;
            }

            .back-to-top {
                bottom: 1.5em;
                right: 1.5em;
                width: 44px;
                height: 44px;
            }
        }

        @media screen and (max-width: 650px) {
            .page-header h1 {
                font-size: 1.2em;
            }

            .page-header {
                padding: 0.8em 0.8em 0.5em;
            }

            #IRT-Manual {
                padding: 0.5em 0.5em;
                align-items: stretch;
            }

            #IRT-Manual label {
                padding: 10px;
                font-size: 0.9em;
                max-width: 100%;
                flex: 1;
            }

            #IRT-Manual .flex-row {
                padding: 0 1em;
                gap: 0 15px;
            }

            #IRT-Manual .grid.grid-2 {
                grid-template-columns: 1fr;
            }

            #IRT-Manual .grid-2 div:nth-child(odd) {
                border-bottom: none;
            }
            .law-layout {
                padding: 0 0.5em 40px;
            }
            .callout {
                width: 100%;
                padding: 10px 10px;
            }
            .callout-content ol {
                padding: 0;
            }
        }

        @media print {
            .page-header {
                background: var(--manual-white) !important;
                -webkit-print-color-adjust: exact;
                print-color-adjust: exact;
            }

            .back-to-top,
            .btn-menu,
            .sidebar-wrapper {
                display: none !important;
            }

            .law-layout {
                grid-template-columns: 1fr !important;
                padding: 0 !important;
            }

            #IRT-Manual label {
                position: static;
            }
        }