:root {
    --zn-bg: #fcfcfa;
    --zn-bg-2: #f4f4f0;
    --zn-ink: #2a2a28;
    --zn-ink-2: #5f5f5a;
    --zn-line: #e6e6e2;
    --zn-acc: #1f6f5c;
    --zn-acc-deep: #175245;
    --zn-mono: "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
    --zn-max: 1000px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--zn-bg);
    color: var(--zn-ink);
    font: 400 16px/1.7 -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    -webkit-text-size-adjust: 100%;
}

h1, h2, h3 {
    margin: 0 0 16px;
    font-family: var(--zn-mono);
    font-weight: 500;
    line-height: 1.25;
    letter-spacing: -0.01em;
}

h1 {
    font-size: clamp(1.6rem, 4vw, 2.4rem);
}

h2 {
    font-size: clamp(1.25rem, 2.6vw, 1.6rem);
}

h3 {
    font-size: 1rem;
    margin-bottom: 6px;
}

p {
    margin: 0 0 16px;
}

a {
    color: var(--zn-acc-deep);
    text-decoration: underline;
    text-underline-offset: 3px;
}

a:hover {
    color: var(--zn-ink);
}

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--zn-acc);
    outline-offset: 2px;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}

table {
    border-collapse: collapse;
}

.zn-bar {
    border-bottom: 1px solid var(--zn-line);
}

.zn-bar__row {
    max-width: var(--zn-max);
    margin: 0 auto;
    padding: 14px 22px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px 24px;
}

.zn-id {
    margin-right: auto;
    font-family: var(--zn-mono);
    font-size: 1.05rem;
    letter-spacing: 0.08em;
    color: var(--zn-acc-deep);
    text-decoration: none;
}

.zn-id span {
    color: var(--zn-ink-2);
}

.zn-menu {
    display: flex;
    flex-wrap: wrap;
    gap: 2px 20px;
    font-family: var(--zn-mono);
    font-size: 0.82rem;
}

.zn-menu a {
    display: inline-block;
    padding: 12px 0;
    min-height: 44px;
    color: var(--zn-ink-2);
    text-decoration: none;
}

.zn-menu a:hover {
    color: var(--zn-acc-deep);
}

.zn-key {
    display: inline-block;
    padding: 14px 24px;
    min-height: 44px;
    border: 1px solid var(--zn-acc);
    border-radius: 0;
    background: var(--zn-acc);
    color: #ffffff;
    font-family: var(--zn-mono);
    font-size: 0.84rem;
    letter-spacing: 0.04em;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: background 140ms ease, color 140ms ease;
}

.zn-key:hover {
    background: var(--zn-acc-deep);
    border-color: var(--zn-acc-deep);
    color: #ffffff;
}

.zn-key--big {
    padding: 17px 30px;
    font-size: 0.94rem;
}

.zn-key--flat {
    background: transparent;
    color: var(--zn-acc-deep);
    border-color: var(--zn-line);
}

.zn-key--flat:hover {
    background: var(--zn-bg-2);
    color: var(--zn-ink);
    border-color: var(--zn-ink-2);
}

.zn-page {
    max-width: var(--zn-max);
    margin: 0 auto;
    padding-left: 22px;
    padding-right: 22px;
}

.zn-tag {
    margin-bottom: 10px;
    font-family: var(--zn-mono);
    font-size: 0.76rem;
    letter-spacing: 0.1em;
    color: var(--zn-acc-deep);
}

.zn-open {
    padding-top: 44px;
    padding-bottom: 44px;
}

.zn-open h1 {
    max-width: 22ch;
}

.zn-open__ans {
    padding: 20px 22px;
    background: var(--zn-bg-2);
    border-left: 3px solid var(--zn-acc);
    font-size: 1.02rem;
    max-width: 70ch;
    margin-bottom: 26px;
}

.zn-open__row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.zn-open__by {
    margin-top: 26px;
    margin-bottom: 0;
    font-family: var(--zn-mono);
    font-size: 0.78rem;
    color: var(--zn-ink-2);
}

.zn-sec {
    padding-top: 34px;
    padding-bottom: 34px;
    border-top: 1px solid var(--zn-line);
}

.zn-sec p {
    max-width: 72ch;
}

.zn-scroll {
    overflow-x: auto;
    margin-top: 20px;
    border: 1px solid var(--zn-line);
}

.zn-table {
    width: 100%;
    min-width: 620px;
    text-align: left;
    font-size: 0.9rem;
    line-height: 1.45;
}

.zn-table caption {
    text-align: left;
    padding: 14px 16px 8px;
    font-family: var(--zn-mono);
    font-size: 0.76rem;
    letter-spacing: 0.06em;
    color: var(--zn-ink-2);
}

.zn-table th,
.zn-table td {
    padding: 11px 16px;
    vertical-align: top;
    border-top: 1px solid var(--zn-line);
    border-right: 1px solid var(--zn-line);
}

.zn-table th:last-child,
.zn-table td:last-child {
    border-right: 0;
}

.zn-table thead th {
    background: var(--zn-acc);
    color: #ffffff;
    font-family: var(--zn-mono);
    font-weight: 500;
    font-size: 0.78rem;
    letter-spacing: 0.04em;
    border-right-color: #ffffff40;
}

.zn-table tbody th {
    font-family: var(--zn-mono);
    font-weight: 500;
    font-size: 0.82rem;
    background: var(--zn-bg-2);
}

.zn-table tbody td {
    font-family: var(--zn-mono);
    font-size: 0.82rem;
}

.zn-table tbody tr:last-child td {
    color: var(--zn-acc-deep);
    font-weight: 700;
}

.zn-src {
    margin-top: 12px;
    font-size: 0.84rem;
    font-style: italic;
    color: var(--zn-ink-2);
}

.zn-rows {
    margin: 20px 0 0;
}

.zn-rows dt {
    padding-top: 14px;
    border-top: 1px solid var(--zn-line);
    font-family: var(--zn-mono);
    font-size: 0.86rem;
    color: var(--zn-acc-deep);
}

.zn-rows dd {
    margin: 6px 0 14px;
    max-width: 72ch;
    color: var(--zn-ink-2);
    font-size: 0.96rem;
}

.zn-views {
    display: grid;
    gap: 20px;
    margin-top: 22px;
}

.zn-view {
    margin: 0;
}

.zn-view svg {
    width: 100%;
    height: auto;
    background: var(--zn-bg-2);
    border: 1px solid var(--zn-line);
}

.zn-view figcaption {
    margin-top: 8px;
    font-family: var(--zn-mono);
    font-size: 0.76rem;
    line-height: 1.6;
    color: var(--zn-ink-2);
}

.zn-dict {
    margin: 20px 0 0;
}

.zn-dict dt {
    padding-top: 12px;
    border-top: 1px solid var(--zn-line);
    font-family: var(--zn-mono);
    font-size: 0.88rem;
    color: var(--zn-acc-deep);
}

.zn-dict dd {
    margin: 5px 0 12px;
    font-size: 0.94rem;
    color: var(--zn-ink-2);
}

.zn-flag {
    margin-top: 20px;
    padding: 18px 20px;
    background: var(--zn-bg-2);
    border-left: 3px solid var(--zn-acc);
    font-size: 0.95rem;
}

.zn-qa {
    padding-top: 16px;
    margin-bottom: 16px;
    border-top: 1px solid var(--zn-line);
    max-width: 72ch;
}

.zn-qa p {
    margin-bottom: 0;
    color: var(--zn-ink-2);
    font-size: 0.96rem;
}

.zn-end {
    padding-top: 46px;
    padding-bottom: 64px;
    border-top: 3px solid var(--zn-acc);
}

.zn-end p {
    max-width: 60ch;
}

.zn-foot {
    border-top: 1px solid var(--zn-line);
    background: var(--zn-bg-2);
    padding-top: 40px;
    padding-bottom: 26px;
    font-size: 0.9rem;
    color: var(--zn-ink-2);
}

.zn-foot__grid {
    max-width: var(--zn-max);
    margin: 0 auto;
    padding-left: 22px;
    padding-right: 22px;
    display: grid;
    gap: 26px;
}

.zn-foot__h {
    margin-bottom: 10px;
    font-family: var(--zn-mono);
    font-size: 0.78rem;
    letter-spacing: 0.06em;
    color: var(--zn-acc-deep);
}

.zn-foot__note {
    font-size: 0.85rem;
}

.zn-foot__ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.zn-foot__ul a {
    display: inline-block;
    padding: 12px 0;
    min-height: 44px;
}

.zn-foot__end {
    max-width: var(--zn-max);
    margin: 24px auto 0;
    padding: 18px 22px 0;
    border-top: 1px solid var(--zn-line);
    font-family: var(--zn-mono);
    font-size: 0.76rem;
}

.zn-bar2 {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: 12px;
    z-index: 40;
    padding: 20px;
    background: var(--zn-bg);
    border: 1px solid var(--zn-ink);
    box-shadow: 0 16px 40px #2a2a2826;
}

.zn-bar2__p {
    margin-bottom: 14px;
    font-size: 0.88rem;
    line-height: 1.6;
}

.zn-bar2__row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.zn-bar2__row .zn-key {
    flex: 1 1 auto;
}

.zn-doc {
    max-width: 740px;
    margin: 0 auto;
    padding: 40px 22px 64px;
}

.zn-doc h2 {
    margin-top: 34px;
    font-size: 1.15rem;
}

.zn-doc ul {
    padding-left: 20px;
}

.zn-doc li {
    margin-bottom: 10px;
}

.zn-doc__meta {
    padding: 14px 18px;
    background: var(--zn-bg-2);
    border-left: 3px solid var(--zn-acc);
    font-family: var(--zn-mono);
    font-size: 0.8rem;
    color: var(--zn-ink-2);
}

.zn-in {
    opacity: 0;
    transition: opacity 400ms ease;
}

.zn-in.is-shown {
    opacity: 1;
}

@media (min-width: 620px) {
    .zn-views {
        grid-template-columns: 1fr 1fr;
    }

    .zn-bar2 {
        left: auto;
        right: 22px;
        bottom: 22px;
        max-width: 440px;
    }

    .zn-bar2__row .zn-key {
        flex: 0 0 auto;
    }
}

@media (min-width: 900px) {
    .zn-open {
        padding-top: 64px;
        padding-bottom: 56px;
    }

    .zn-sec {
        padding-top: 48px;
        padding-bottom: 48px;
    }

    .zn-sec--wide {
        margin-left: -22px;
        margin-right: -22px;
        padding-left: 44px;
        padding-right: 44px;
        background: var(--zn-bg-2);
    }

    .zn-sec--wide .zn-scroll {
        background: var(--zn-bg);
    }

    .zn-rows {
        display: grid;
        grid-template-columns: 220px 1fr;
        column-gap: 26px;
    }

    .zn-rows dt {
        grid-column: 1;
    }

    .zn-rows dd {
        grid-column: 2;
        border-top: 1px solid var(--zn-line);
        padding-top: 14px;
        margin-top: 0;
    }

    .zn-dict {
        display: grid;
        grid-template-columns: 200px 1fr;
        column-gap: 26px;
    }

    .zn-dict dt {
        grid-column: 1;
    }

    .zn-dict dd {
        grid-column: 2;
        border-top: 1px solid var(--zn-line);
        padding-top: 12px;
        margin-top: 0;
    }

    .zn-foot__grid {
        grid-template-columns: 1.2fr 1fr 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
    }

    .zn-in {
        opacity: 1;
    }
}