:root {
            --white: #ffffff;
            --black: #181818;
            --gray-1: #4f4f4f;
            --gray-2: #777777;
            --gray-3: #a5a5a5;
            --gray-4: #dcdcdc;
            --gray-5: #eeeeee;
            --gray-6: #f7f7f7;

            --accent: #8a6f52;
            --accent-strong: #6e573f;
        }

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

        html {
            scroll-behavior: auto;
        }

        body {
            background: var(--white);
            color: var(--black);

            font-family:
                -apple-system,
                BlinkMacSystemFont,
                "Segoe UI",
                "PingFang SC",
                "Hiragino Sans GB",
                "Microsoft YaHei",
                Arial,
                sans-serif;

            font-size: 15px;
            line-height: 1.8;

            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        .container {
            width: min(calc(100% - 48px), 1020px);
            margin: 0 auto;
        }

        

        .page-top {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;

            padding: 64px 0 34px;

            border-bottom: 1px solid var(--gray-4);
        }

        .page-top h1 {
            font-size: clamp(28px, 4vw, 36px);
            font-weight: 700;
            letter-spacing: -0.03em;
            line-height: 1.25;
        }

        .total-line {
            color: var(--gray-2);
            font-size: 13px;

            margin-top: 4px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;

            height: 40px;
            padding: 0 20px;

            border-radius: 8px;
            border: 1px solid transparent;

            font-size: 13px;
            font-weight: 600;
            font-family: inherit;

            cursor: pointer;
            white-space: nowrap;

            transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
        }

        .btn-accent {
            background: var(--accent);
            color: var(--white);
        }

        .btn-accent:hover {
            background: var(--accent-strong);
        }

        .btn-dark {
            background: var(--black);
            color: var(--white);
        }

        .btn-dark:hover {
            background: #333333;
        }

        html.dark .btn-dark {
            background: var(--gray-6);
            color: var(--black);
            border-color: var(--gray-4);
        }

        html.dark .btn-dark:hover {
            background: var(--gray-5);
        }

        .btn-ghost {
            background: var(--white);
            border-color: var(--gray-4);
            color: var(--black);
        }

        .btn-ghost:hover {
            background: var(--gray-6);
            border-color: #c8c8c8;
        }

        .btn-small {
            height: 34px;
            padding: 0 16px;
            font-size: 12.5px;
        }

        
        .icon-dl {
            display: inline-flex;
            align-items: center;
            justify-content: center;

            width: 40px;
            height: 34px;

            background: #1f2937;
            color: var(--white);
            border: none;
            border-radius: 6px;

            box-shadow:
                0 20px 25px -5px rgba(0, 0, 0, 0.1),
                0 8px 10px -6px rgba(0, 0, 0, 0.1);

            cursor: pointer;

            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .icon-dl:hover {
            transform: translateY(-3px);

            box-shadow:
                0 24px 30px -6px rgba(0, 0, 0, 0.16),
                0 10px 12px -6px rgba(0, 0, 0, 0.1);
        }

        html.dark .icon-dl {
            color: #f4f6f9;
            background: #2a3038;
            border: 1px solid #3a4149;
        }

        .icon-dl:active {
            transform: translateY(-1px);
        }

        .icon-dl svg {
            width: 20px;
            height: 20px;

            stroke: currentColor;
            fill: none;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        

        .layout {
            display: flex;
            align-items: flex-start;
            gap: 46px;

            padding: 40px 0 20px;
        }

        

        .tool-nav {
            flex-shrink: 0;

            width: 224px;

            position: sticky;
            top: 32px;
        }

        .tool-item {
            display: block;
            position: relative;

            width: 100%;

            padding: 10px 0 10px 16px;

            border: none;
            background: none;

            text-align: left;
            font-family: inherit;

            cursor: pointer;
        }

        .tool-item-name {
            display: block;

            font-size: 13.5px;
            font-weight: 500;
            color: var(--gray-1);

            transition: color 0.15s ease;

            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .tool-item-meta {
            display: block;

            font-size: 11.5px;
            color: var(--gray-3);

            margin-top: 1px;
        }

        .tool-item:hover .tool-item-name {
            color: var(--black);
        }

        .tool-item.active .tool-item-name {
            color: var(--accent-strong);
            font-weight: 600;
        }

        
        #tool-nav::before {
            content: "";
            position: absolute;
            left: 0;
            top: 10px;
            bottom: 10px;

            width: 1.5px;

            background: var(--gray-5);
        }

        .tool-indicator {
            position: absolute;
            left: 0;
            top: 0;

            width: 1.5px;
            height: 0;

            background: var(--accent);
            border-radius: 1px;

            transition:
                top 0.35s cubic-bezier(0.4, 0, 0.2, 1),
                height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        

        .detail {
            flex: 1;
            min-width: 0;
            max-width: 700px;

            padding-bottom: 60px;
        }

        .panel {
            scroll-margin-top: 24px;
        }

        .panel + .panel {
            margin-top: 46px;

            padding-top: 42px;

            border-top: 1px solid var(--gray-4);
        }

        .panel-head {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;

            padding-bottom: 16px;

            border-bottom: 1px solid var(--gray-4);
        }

        .panel-head h2 {
            font-size: 21px;
            font-weight: 700;
            letter-spacing: -0.01em;

            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .ver-tag {
            background: var(--gray-6);
            border: 1px solid var(--gray-5);
            color: var(--gray-1);

            font-size: 11.5px;
            font-weight: 500;

            border-radius: 5px;
            padding: 2px 9px;
        }

        /* 图片点击放大 */
        .lightbox {
            position: fixed;
            inset: 0;
            z-index: 2000;
            background: rgba(0, 0, 0, 0.86);
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 24px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.24s ease;
        }

        .lightbox.open {
            opacity: 1;
            pointer-events: auto;
        }

        .lightbox img {
            max-width: 95vw;
            max-height: 92vh;
            border-radius: 10px;
            transform: scale(0.94);
            transition: transform 0.26s cubic-bezier(0.2, 0.8, 0.3, 1);
        }

        .lightbox.open img {
            transform: scale(1);
        }

        .panel-count {
            color: var(--gray-3);
            font-size: 12.5px;

            margin-top: 2px;
        }

        .panel-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;

            padding-top: 4px;
        }

        
        .intro-box {
            overflow: hidden;

            max-height: 220px;
            opacity: 1;

            background: var(--gray-6);
            border-radius: 8px;

            padding: 12px 16px;
            margin: 14px 0 2px;

            color: var(--gray-1);
            font-size: 13px;

            transition:
                max-height 0.3s ease,
                opacity 0.25s ease,
                padding 0.25s ease,
                margin 0.25s ease;
        }

        .intro-box.collapsed {
            max-height: 0;
            opacity: 0;
            padding-top: 0;
            padding-bottom: 0;
            margin-top: 0;
            margin-bottom: 0;
        }

        

        .entries {
            margin-top: 6px;
        }

        .entry {
            padding: 17px 0;
        }

        .entry + .entry {
            border-top: 1px dashed var(--gray-5);
        }

        .entry-head {
            display: flex;
            align-items: baseline;
            gap: 12px;
            flex-wrap: wrap;

            margin-bottom: 3px;
        }

        .entry-ver {
            font-size: 14.5px;
            font-weight: 600;
        }

        .entry-date {
            color: var(--gray-3);
            font-size: 12px;
        }

        .changes {
            list-style: none;
        }

        .changes li {
            position: relative;

            color: var(--gray-1);
            font-size: 13.5px;

            padding-left: 18px;
        }

        .changes li::before {
            content: "—";
            position: absolute;
            left: 0;

            color: var(--gray-3);
        }

        
        .collapse-box {
            display: grid;
            grid-template-rows: 1fr;

            transition: grid-template-rows 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .collapse-box.collapsed {
            grid-template-rows: 0fr;
        }

        .collapse-inner {
            overflow: hidden;
            min-height: 0;

            opacity: 1;
            transition: opacity 0.3s ease;
        }

        .collapse-box.collapsed .collapse-inner {
            opacity: 0;
        }

        .collapse-inner > .entry:first-child {
            border-top: 1px dashed var(--gray-5);
        }

        .toggle-wrap {
            padding: 14px 0 2px;
        }

        .closed-tip {
            color: var(--gray-2);
            font-size: 13.5px;

            padding: 16px 0 6px;
        }

        .closed-tip small {
            display: block;

            color: var(--gray-3);
            font-size: 12px;
        }

        


        

        @media (max-width: 860px) {

            .container {
                width: calc(100% - 36px);
            }

            .page-top {
                padding-top: 42px;
            }

            .layout {
                flex-direction: column;
                gap: 24px;

                padding-top: 26px;
            }

            .tool-nav {
                position: static;

                width: 100%;

                display: flex;
                gap: 6px;

                overflow-x: auto;

                scrollbar-width: none;
                padding-bottom: 4px;
            }

            .tool-nav::-webkit-scrollbar {
                display: none;
            }

            .tool-item {
                width: auto;
                flex-shrink: 0;

                border-left: none;
                border-bottom: 1.5px solid var(--gray-5);

                padding: 4px 2px 8px;
            }

            .tool-item.active {
                border-bottom-color: var(--accent);
            }

            
            #tool-nav::before,
            .tool-indicator {
                display: none;
            }

            .tool-item-meta {
                display: none;
            }

            .detail {
                max-width: none;
            }

            .panel-head {
                flex-direction: column;
            }

            .panel-actions {
                padding-top: 0;
            }
        }
            html.dark {
            --white: #14161a;
            --black: #e9e6df;
            --gray-1: #b9b6ae;
            --gray-2: #8f8c84;
            --gray-3: #6f6d66;
            --gray-4: #2e323a;
            --gray-5: #262a31;
            --gray-6: #1d2127;
            --accent: #a8896a;
            --accent-strong: #c09a76;
            --accent-soft: #26221c;
        }

        .theme-toggle {
            position: fixed;
            right: 18px;
            bottom: 18px;
            z-index: 999;

            width: 42px;
            height: 42px;

            display: flex;
            align-items: center;
            justify-content: center;

            border: 1px solid var(--gray-4);
            border-radius: 50%;

            background: var(--gray-6);
            color: var(--black);

            cursor: pointer;

            transition: background 0.15s ease, border-color 0.15s ease;
        }

        .theme-toggle:hover {
            background: var(--gray-5);
        }

        .theme-toggle svg {
            width: 19px;
            height: 19px;

            stroke: currentColor;
            fill: none;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .theme-toggle .i-sun {
            display: none;
        }

        html.dark .theme-toggle .i-sun {
            display: block;
        }

        html.dark .theme-toggle .i-moon {
            display: none;
        }