:root {
    --xi-bg: #ffffff;
    --xi-bg-soft: #f2f0ec;
    --xi-ink: #141414;
    --xi-ink-2: #4f524f;
    --xi-rule: #141414;
    --xi-hair: #d6d3cc;
    --xi-red: #a51f2d;
    --xi-red-deep: #85141f;
    --xi-wrap: 1240px;
    --xi-col: 720px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--xi-bg);
    color: var(--xi-ink);
    font: 400 18px/1.7 "Helvetica Neue", Helvetica, Arial, sans-serif;
    -webkit-text-size-adjust: 100%;
}

h1, h2, h3 {
    margin: 0 0 20px;
    font-family: Georgia, "Times New Roman", "Iowan Old Style", serif;
    font-weight: 400;
    line-height: 1.1;
}

h1 {
    font-size: clamp(2.4rem, 6.4vw, 4.6rem);
}

h2 {
    font-size: clamp(1.75rem, 3.8vw, 2.6rem);
}

h3 {
    font-size: 1.22rem;
    line-height: 1.3;
    margin-bottom: 10px;
}

p {
    margin: 0 0 20px;
}

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

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

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

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

table {
    border-collapse: collapse;
}

.xi-bar {
    border-bottom: 2px solid var(--xi-rule);
}

.xi-bar__inner {
    max-width: var(--xi-wrap);
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px 26px;
}

.xi-logo {
    margin-right: auto;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 1.35rem;
    text-decoration: none;
    color: var(--xi-ink);
    letter-spacing: 0.02em;
}

.xi-logo em {
    font-style: normal;
    color: var(--xi-red);
}

.xi-menu {
    display: flex;
    flex-wrap: wrap;
    gap: 2px 22px;
    font-size: 0.82rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

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

.xi-menu a:hover {
    border-bottom-color: var(--xi-red);
}

.xi-act {
    display: inline-block;
    padding: 14px 26px;
    min-height: 44px;
    border: 0;
    border-radius: 0;
    background: var(--xi-ink);
    color: #f7f5f1;
    font: inherit;
    font-size: 0.94rem;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: background 150ms ease;
}

.xi-act:hover {
    background: var(--xi-red-deep);
    color: #f7f5f1;
}

.xi-act--big {
    padding: 18px 38px;
    font-size: 1.05rem;
}

.xi-act--line {
    background: transparent;
    color: var(--xi-ink);
    box-shadow: inset 0 0 0 2px var(--xi-ink);
}

.xi-act--line:hover {
    background: var(--xi-bg-soft);
    color: var(--xi-ink);
}

.xi-cover {
    position: relative;
    background: var(--xi-ink);
    color: #f7f5f1;
    padding-top: 96px;
    padding-bottom: 96px;
    overflow: hidden;
}

.xi-cover__photo {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    max-width: none;
    object-fit: cover;
    object-position: 50% 30%;
    opacity: 0.28;
}

.xi-cover__inner {
    position: relative;
    max-width: var(--xi-wrap);
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
}

.xi-cover__credit {
    margin-top: 14px;
    margin-bottom: 0;
    max-width: 56ch;
    font-family: Menlo, Consolas, "SF Mono", monospace;
    font-size: 0.72rem;
    line-height: 1.7;
    color: #cec9c0;
}

.xi-cover h1 {
    color: #f7f5f1;
    max-width: 16ch;
    margin-bottom: 28px;
}

.xi-cover__one {
    font-size: 1.12rem;
    color: #c9c5bd;
    max-width: 42ch;
    margin-bottom: 34px;
}

.xi-cover .xi-act {
    background: var(--xi-red);
    color: #fff;
}

.xi-cover .xi-act:hover {
    background: #fff;
    color: var(--xi-ink);
}

.xi-cover__sign {
    margin-top: 40px;
    margin-bottom: 0;
    font-family: Menlo, Consolas, "SF Mono", monospace;
    font-size: 0.78rem;
    letter-spacing: 0.04em;
    color: #d3cec5;
}

.xi-body {
    max-width: var(--xi-col);
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
}

.xi-answer {
    padding-top: 46px;
    padding-bottom: 30px;
}

.xi-answer p {
    margin: 0;
    padding-left: 22px;
    border-left: 6px solid var(--xi-red);
    font-size: 1.22rem;
    line-height: 1.55;
}

.xi-part {
    padding-top: 40px;
    padding-bottom: 40px;
    border-top: 2px solid var(--xi-rule);
}

.xi-part:first-of-type {
    border-top: 0;
}

.xi-fig {
    margin: 0 0 20px;
}

.xi-map {
    width: 100%;
    height: auto;
    border: 2px solid var(--xi-rule);
    background: #f7f6f3;
}

.xi-photo {
    width: 100%;
    height: auto;
    border: 2px solid var(--xi-rule);
}

.xi-fig figcaption {
    margin-top: 10px;
    font-family: Menlo, Consolas, "SF Mono", monospace;
    font-size: 0.76rem;
    line-height: 1.6;
    color: var(--xi-ink-2);
}

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

.xi-list li {
    padding-top: 20px;
    border-top: 1px solid var(--xi-hair);
}

.xi-list li:first-child {
    border-top: 0;
    padding-top: 0;
}

.xi-list p {
    font-size: 0.98rem;
}

.xi-method {
    margin: 0;
    padding-left: 0;
    list-style: none;
    counter-reset: xim;
}

.xi-method li {
    counter-increment: xim;
    position: relative;
    padding-left: 46px;
    margin-bottom: 16px;
    font-size: 1rem;
}

.xi-method li::before {
    content: counter(xim);
    position: absolute;
    left: 0;
    top: 0;
    width: 32px;
    height: 32px;
    line-height: 30px;
    text-align: center;
    border: 2px solid var(--xi-red);
    color: var(--xi-red-deep);
    font-family: Menlo, Consolas, monospace;
    font-size: 0.82rem;
}

.xi-flag {
    background: var(--xi-bg-soft);
    padding: 20px 22px;
    font-size: 0.97rem;
    border-left: 6px solid var(--xi-ink);
    margin-bottom: 0;
}

.xi-dl {
    margin: 0;
    display: grid;
    gap: 0;
}

.xi-dl dt {
    font-family: Georgia, "Times New Roman", serif;
    font-size: 1.12rem;
    padding-top: 14px;
    border-top: 1px solid var(--xi-hair);
}

.xi-dl dd {
    margin: 4px 0 14px;
    font-size: 0.97rem;
    color: var(--xi-ink-2);
}

.xi-scroll {
    overflow-x: auto;
}

.xi-table {
    width: 100%;
    min-width: 600px;
    text-align: left;
    font-size: 0.94rem;
    line-height: 1.5;
}

.xi-table caption {
    text-align: left;
    padding-bottom: 12px;
    font-family: Menlo, Consolas, monospace;
    font-size: 0.74rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--xi-ink-2);
}

.xi-table th,
.xi-table td {
    padding: 13px 14px;
    vertical-align: top;
    border-bottom: 1px solid var(--xi-hair);
}

.xi-table thead th {
    border-bottom: 2px solid var(--xi-rule);
    font-family: Menlo, Consolas, monospace;
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-weight: 400;
}

.xi-table tbody th {
    font-weight: 700;
    width: 34%;
}

.xi-source {
    margin-top: 12px;
    font-size: 0.86rem;
    font-style: italic;
    color: var(--xi-ink-2);
}

.xi-qa {
    padding-top: 18px;
    margin-bottom: 18px;
    border-top: 1px solid var(--xi-hair);
}

.xi-qa:first-of-type {
    border-top: 0;
    padding-top: 0;
}

.xi-qa h3 {
    font-family: Georgia, "Times New Roman", serif;
}

.xi-qa p {
    margin-bottom: 0;
    font-size: 0.98rem;
    color: var(--xi-ink-2);
}

.xi-end {
    margin-top: 30px;
    background: var(--xi-bg-soft);
    border-top: 2px solid var(--xi-rule);
    padding-top: 78px;
    padding-bottom: 78px;
}

.xi-end__inner {
    max-width: var(--xi-col);
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
}

.xi-end p {
    max-width: 46ch;
}

.xi-foot {
    border-top: 2px solid var(--xi-rule);
    padding-top: 48px;
    padding-bottom: 30px;
    font-size: 0.92rem;
}

.xi-foot__inner {
    max-width: var(--xi-wrap);
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
    display: grid;
    gap: 28px;
}

.xi-foot__h {
    margin-bottom: 10px;
    font-family: Menlo, Consolas, monospace;
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--xi-red-deep);
}

.xi-foot__note {
    color: var(--xi-ink-2);
    font-size: 0.86rem;
}

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

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

.xi-foot__line {
    max-width: var(--xi-wrap);
    margin: 26px auto 0;
    padding: 20px 24px 0;
    border-top: 1px solid var(--xi-hair);
    font-family: Menlo, Consolas, monospace;
    font-size: 0.74rem;
    color: var(--xi-ink-2);
}

.xi-cbar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 30;
    background: var(--xi-ink);
    color: #f2f0ec;
    padding: 20px 24px;
    border-top: 4px solid var(--xi-red);
}

.xi-cbar p {
    margin: 0 0 14px;
    font-size: 0.9rem;
    line-height: 1.55;
}

.xi-cbar a {
    color: #f2f0ec;
}

.xi-cbar__row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.xi-cbar__row .xi-act {
    flex: 1 1 auto;
    background: var(--xi-red);
    color: #fff;
}

.xi-cbar__row .xi-act--line {
    background: transparent;
    color: #f2f0ec;
    box-shadow: inset 0 0 0 2px #6a6862;
}

.xi-doc {
    max-width: var(--xi-col);
    margin: 0 auto;
    padding: 52px 24px 72px;
}

.xi-doc h2 {
    margin-top: 38px;
    font-size: 1.5rem;
}

.xi-doc ul {
    padding-left: 22px;
}

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

.xi-doc__credits {
    font-size: 0.9rem;
    line-height: 1.75;
    color: var(--xi-ink-2);
}

.xi-doc__meta {
    font-family: Menlo, Consolas, monospace;
    font-size: 0.78rem;
    line-height: 1.7;
    color: var(--xi-ink-2);
    border-left: 4px solid var(--xi-red);
    padding-left: 16px;
}

.xi-fade {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 420ms ease, transform 420ms ease;
}

.xi-fade.is-shown {
    opacity: 1;
    transform: none;
}

@media (min-width: 620px) {
    .xi-cbar {
        left: auto;
        right: 22px;
        bottom: 22px;
        max-width: 440px;
        border: 4px solid var(--xi-red);
    }

    .xi-cbar__row .xi-act {
        flex: 0 0 auto;
    }
}

@media (min-width: 760px) {
    .xi-cover {
        padding-top: 150px;
        padding-bottom: 150px;
    }

    .xi-part {
        padding-top: 56px;
        padding-bottom: 56px;
    }

    .xi-dl {
        grid-template-columns: 1fr 1fr;
        column-gap: 34px;
    }
}

@media (min-width: 980px) {
    .xi-foot__inner {
        grid-template-columns: 1.3fr 1fr 1fr;
    }
}

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

    .xi-fade {
        opacity: 1;
        transform: none;
    }
}