:root {
        --ink: #251d32;
        --muted: #716b7d;
        --paper: #f7f5fa;
        --panel: #fffefe;
        --line: #dfd9e8;
        --accent: #6236b6;
        --accent-soft: #eee8fa;
    }

    * {
        box-sizing: border-box;
    }

    body {
        margin: 0;
        color: var(--ink);
        background: var(--paper);
        font: 16px/1.5 Arial, Helvetica, sans-serif;
    }

    header {
        padding: 52px max(24px, calc((100vw - 1180px)/2));
        border-bottom: 1px solid var(--line);
        background: var(--panel);
    }

    .eyebrow {
        margin: 0 0 10px;
        color: var(--accent);
        font: 700 12px/1 monospace;
        letter-spacing: .12em;
        text-transform: uppercase;
    }

    h1 {
        max-width: 760px;
        margin: 0;
        font-size: clamp(2.35rem, 6vw, 4.6rem);
        line-height: .96;
        letter-spacing: -.065em;
    }

    .intro {
        max-width: 600px;
        margin: 20px 0 0;
        color: var(--muted);
        font-size: 1.08rem;
    }

    main {
        max-width: 1180px;
        margin: auto;
        padding: 30px 24px 70px;
    }

    .toolbar {
        position: sticky;
        top: 0;
        z-index: 5;
        display: grid;
        grid-template-columns: minmax(0, 1fr);
        gap: 10px;
        margin: 0 -12px 28px;
        padding: 12px;
        border-bottom: 1px solid var(--line);
        background: var(--paper);
        background: color-mix(in srgb, var(--paper) 94%, transparent);
    }

    .search {
        flex: 1;
        min-width: 220px;
        min-height: 48px;
        border: 1px solid var(--line);
        border-radius: 10px;
        padding: 13px 15px;
        color: var(--ink);
        background: var(--panel);
        font: inherit;
    }

    .search:focus {
        outline: 3px solid #cbb6ef;
        border-color: var(--accent);
    }

    .filter-block {
        min-width: 0;
    }

    .filter-label {
        margin: 0 0 6px;
        color: var(--muted);
        font: 700 11px/1 monospace;
        letter-spacing: .08em;
        text-transform: uppercase;
    }

    .filters {
        display: flex;
        flex-wrap: wrap;
        gap: 7px;
    }

    button {
        min-height: 42px;
        border: 1px solid var(--line);
        border-radius: 999px;
        padding: 9px 12px;
        cursor: pointer;
        color: var(--ink);
        background: transparent;
        font: 700 13px/1 Arial, sans-serif;
        transition: .18s ease;
    }

    button:hover,
    button:focus-visible,
    button.active {
        color: white;
        border-color: var(--accent);
        background: var(--accent);
        outline: none;
    }

    .map {
        position: relative;
        display: grid;
        grid-template-columns: repeat(12, minmax(0, 1fr));
        gap: 16px;
        align-items: start;
    }

    .branch {
        grid-column: span 4;
        min-width: 0;
        min-height: 274px;
        border: 1px solid var(--line);
        border-radius: 14px;
        overflow: hidden;
        background: var(--panel);
    }

    .branch h2 {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 10px;
        margin: 0;
        padding: 16px 17px;
        border-bottom: 1px solid var(--line);
        font-size: 1rem;
        overflow-wrap: anywhere;
    }

    .branch h2 span {
        color: var(--accent);
        font: 700 11px/1 monospace;
        letter-spacing: .08em;
    }

    .tags {
        padding: 10px;
    }

    .tag {
        width: 100%;
        min-height: 52px;
        display: grid;
        grid-template-columns: minmax(104px, .9fr) minmax(0, 1.35fr) 14px;
        gap: 8px;
        align-items: center;
        border: 0;
        border-radius: 8px;
        padding: 10px 8px;
        text-align: left;
        background: transparent;
    }

    .tag:hover {
        color: var(--ink);
        background: var(--accent-soft);
    }

    code {
        color: var(--accent);
        font: 700 13px/1.3 monospace;
        overflow-wrap: anywhere;
    }

    .tag span {
        min-width: 0;
        color: var(--muted);
        font-weight: 400;
        font-size: .88rem;
        overflow-wrap: anywhere;
    }

    .arrow {
        color: var(--accent);
        font-size: 17px;
    }

    dialog {
        width: min(700px, calc(100% - 32px));
        border: 1px solid var(--line);
        border-radius: 16px;
        padding: 0;
        color: var(--ink);
        background: var(--panel);
        box-shadow: 0 20px 60px rgba(25, 40, 33, .18);
    }

    dialog::backdrop {
        background: rgba(24, 33, 29, .45);
    }

    .detail {
        padding: 28px;
    }

    .detail-head {
        display: flex;
        align-items: start;
        justify-content: space-between;
        gap: 18px;
    }

    .detail h3 {
        margin: 7px 0 0;
        font-size: 1.7rem;
        letter-spacing: -.04em;
    }

    .close {
        min-width: 38px;
        padding: 10px;
        font-size: 19px;
    }

    .meaning {
        margin: 23px 0 10px;
        color: var(--muted);
        font-size: 1.05rem;
    }

    .example-label {
        margin: 18px 0 8px;
        color: var(--accent);
        font: 700 11px/1 monospace;
        letter-spacing: .1em;
    }

    pre {
        overflow: auto;
        margin: 0;
        padding: 18px;
        border-radius: 10px;
        color: #3e2378;
        background: #f0ebfa;
        font: 14px/1.65 monospace;
    }

    .hint {
        margin: 18px 0 0;
        padding-top: 16px;
        border-top: 1px solid var(--line);
        color: var(--muted);
        font-size: .9rem;
    }

    .empty {
        display: none;
        grid-column: 1/-1;
        padding: 40px;
        border: 1px dashed var(--line);
        border-radius: 14px;
        color: var(--muted);
        text-align: center;
    }

    footer {
        max-width: 1180px;
        margin: auto;
        padding: 0 24px 40px;
        color: var(--muted);
        font-size: .85rem;
    }

    @media (max-width:800px) {
        .branch {
            grid-column: span 6;
        }
    }

    @media (max-width:560px) {
        header {
            padding-top: 36px;
        }

        main {
            padding: 18px 14px 54px;
        }

        .branch {
            grid-column: 1/-1;
            min-height: 0;
        }

        .toolbar {
            margin: 0 -2px 20px;
            padding: 10px 2px;
        }

        .search {
            min-width: 0;
            width: 100%;
        }

        .filters {
            flex-wrap: nowrap;
            overflow-x: auto;
            padding: 1px 0 5px;
            scrollbar-width: none;
        }

        .filters::-webkit-scrollbar {
            display: none;
        }

        .filters button {
            flex: 0 0 auto;
            min-height: 44px;
        }

        .tag {
            grid-template-columns: minmax(0, 1fr) 20px;
            gap: 3px 10px;
            padding: 13px 10px;
        }

        .tag code {
            grid-column: 1;
            font-size: 14px;
        }

        .tag span {
            grid-column: 1;
            font-size: .92rem;
        }

        .tag .arrow {
            grid-column: 2;
            grid-row: 1 / span 2;
            align-self: center;
        }

        dialog {
            width: 100%;
            max-width: none;
            max-height: 88dvh;
            margin: 0;
            position: fixed;
            inset: auto 0 0;
            border-radius: 18px 18px 0 0;
        }

        .detail {
            padding: 22px 18px max(24px, env(safe-area-inset-bottom));
        }

        .detail h3 {
            font-size: 1.45rem;
        }

        .meaning {
            font-size: 1rem;
        }

        pre {
            padding: 14px;
            font-size: 12px;
        }
    }

    @media print {
        header {
            padding: 24px;
        }

        main {
            padding: 18px;
        }

        .toolbar,
        footer {
            display: none;
        }

        .map {
            gap: 9px;
        }

        .branch {
            min-height: auto;
        }

        dialog {
            display: none;
        }
    }