:root {
    --paper: #f6f1e8;
    --paper-deep: #efe6d8;
    --ink: #171714;
    --ink-soft: rgba(23, 23, 20, 0.78);
    --ink-faint: rgba(23, 23, 20, 0.52);
    --line: rgba(23, 23, 20, 0.14);
    --accent: #6f5442;
    --content-width: 1680px;
    --article-width: 58rem;
    --gallery-gap: 1.4rem;
    --gallery-landscape-width: 34rem;
    --gallery-portrait-width: calc(var(--gallery-landscape-width) * 2 / 3);
    --gallery-landscape-height: calc(var(--gallery-landscape-width) * 2 / 3);
    --gallery-pair-portrait-width: calc(var(--gallery-landscape-height) * 2 / 3);
    --gallery-poster-width: 26rem;
    --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, "Times New Roman", serif;
    --sans: "Avenir Next", "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--ink);
    font-family: var(--sans);
    background:
        radial-gradient(circle at 12% 10%, rgba(186, 154, 118, 0.16), transparent 25%),
        radial-gradient(circle at 82% 14%, rgba(121, 147, 162, 0.12), transparent 24%),
        linear-gradient(180deg, #fbf8f2 0%, var(--paper) 38%, var(--paper-deep) 100%);
}

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

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

p,
li {
    margin: 0;
    color: var(--ink-soft);
    line-height: 1.72;
}

h1,
h2 {
    margin: 0;
    color: var(--ink);
    font-family: var(--serif);
    font-weight: 600;
    line-height: 1.05;
}

.site-header,
.site-footer,
.site-main {
    position: relative;
    z-index: 1;
}

.site-header {
    background:
        linear-gradient(180deg, rgba(252, 248, 241, 0.94), rgba(244, 237, 226, 0.9));
    border-bottom: 1px solid var(--line);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.72) inset,
        0 10px 24px rgba(23, 23, 20, 0.035);
}

.site-header-inner,
.section-shell,
.site-footer-inner {
    width: min(calc(100% - 2rem), var(--content-width));
    margin: 0 auto;
}

.site-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    padding: 1.02rem 0 0.97rem;
}

.brand {
    font-family: var(--serif);
    font-size: clamp(1rem, 1.6vw, 1.2rem);
    letter-spacing: 0.025em;
}

.site-nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 0.55rem 0.7rem;
    color: var(--ink-soft);
    font-family: var(--serif);
    font-size: 0.82rem;
    letter-spacing: 0.055em;
    text-transform: uppercase;
}

.site-nav a,
.site-footer a,
.intro-note a,
.essay a {
    text-decoration: underline;
    text-underline-offset: 0.18em;
}

.site-nav a,
.lang-link {
    display: inline-block;
    padding: 0.22rem 0.38rem 0.18rem;
    border: 1px solid transparent;
    text-decoration: none;
    transition: color 180ms ease, opacity 180ms ease;
}

.site-nav a:hover,
.lang-link:hover {
    color: var(--ink);
    background: rgba(23, 23, 20, 0.04);
    border-color: rgba(23, 23, 20, 0.08);
}

.site-nav a.is-active,
.lang-link.is-active {
    color: var(--ink);
    background: rgba(23, 23, 20, 0.06);
    border-color: rgba(23, 23, 20, 0.13);
}

.lang-switch {
    display: inline-flex;
    align-items: center;
    gap: 0.12rem;
    color: var(--ink-faint);
}

.lang-switch span {
    color: var(--ink-faint);
}

.section-shell {
    padding-bottom: 4.5rem;
}

.intro {
    padding-top: 2.5rem;
    padding-bottom: 2.6rem;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.intro-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(16rem, 0.5fr);
    gap: 1.35rem 3rem;
    align-items: start;
}

.intro-copy {
    max-width: 44rem;
}

.intro p {
    margin-top: 1rem;
}

.intro-copy p {
    color: var(--ink);
}

.intro-lede {
    margin-top: 0;
    color: var(--ink);
    font-family: var(--serif);
    font-size: clamp(1.4rem, 2.2vw, 1.8rem);
    line-height: 1.12;
}

.intro-note {
    color: var(--ink);
}

.intro-contact {
    display: grid;
    gap: 0.45rem;
    padding: 1.05rem 1.15rem 1.1rem;
    border: 1px solid rgba(23, 23, 20, 0.24);
    background: #f9f4ec;
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.72) inset,
        0 14px 28px rgba(23, 23, 20, 0.06);
    color: var(--ink-soft);
    font-size: 0.98rem;
    max-width: 18rem;
    align-self: start;
}

.intro-contact p {
    margin: 0;
    color: inherit;
}

.intro-contact-title {
    color: var(--ink-faint);
    font-size: 0.76rem;
    letter-spacing: 0.11em;
    text-transform: uppercase;
}

.intro-contact a {
    color: inherit;
}

.intro-contact-note {
    color: var(--ink-soft);
    max-width: 16rem;
}

.intro-bridge {
    max-width: 48rem;
    margin-top: 1.5rem;
    padding-top: 0.2rem;
}

.category-block {
    display: grid;
    grid-template-columns: minmax(7.5rem, 10.5rem) minmax(0, 1fr);
    gap: 1rem 2.4rem;
    align-items: start;
    border-top: 1px solid var(--line);
    padding-top: 1.25rem;
    padding-bottom: 3.2rem;
}

.intro + .category-block {
    border-top: 0;
    padding-top: 0.55rem;
}

.category-head {
    margin-bottom: 0;
    padding-top: 0.1rem;
}

.category-head h2 {
    font-size: clamp(1.35rem, 2vw, 1.85rem);
    line-height: 1.04;
}

.category-gallery {
    display: grid;
    gap: 1.6rem;
    justify-items: start;
    min-width: 0;
}

.image-block,
.comparison-figure {
    margin: 0;
}

.image-block-wide,
.image-block-portrait,
.image-block-poster {
    width: 100%;
}

.image-block-wide {
    max-width: var(--gallery-landscape-width);
}

.image-block-portrait {
    max-width: var(--gallery-portrait-width);
}

.image-block-poster {
    max-width: var(--gallery-poster-width);
}

.image-block-wide img,
.image-block-portrait img,
.image-block-poster img,
.comparison-figure img {
    width: 100%;
}

.image-pair {
    display: grid;
    grid-template-columns: var(--gallery-landscape-width) var(--gallery-pair-portrait-width);
    gap: var(--gallery-gap);
    align-items: end;
    width: 100%;
    max-width: calc(var(--gallery-landscape-width) + var(--gallery-pair-portrait-width) + var(--gallery-gap));
}

.image-pair .image-block-wide,
.image-pair .image-block-portrait {
    max-width: none;
}

.image-pair .image-block-wide {
    width: var(--gallery-landscape-width);
}

.image-pair .image-block-portrait {
    width: var(--gallery-pair-portrait-width);
}

.essay {
    padding-top: 2.5rem;
}

.essay-header,
.essay-section {
    max-width: var(--article-width);
    margin: 0 auto;
}

.essay-header h1 {
    font-size: clamp(2.3rem, 4vw, 3.9rem);
}

.essay-header p {
    margin-top: 1rem;
}

.essay-section {
    margin-top: 2.25rem;
    padding-top: 2.25rem;
    border-top: 1px solid var(--line);
}

.essay-section h2 {
    font-size: 1.65rem;
    margin-bottom: 0.95rem;
}

.essay-section p + p {
    margin-top: 1rem;
}

.comparison-section {
    max-width: var(--article-width);
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(0.85rem, 1.7vw, 1.15rem);
    align-items: start;
    margin-top: 1.15rem;
    margin-left: auto;
    margin-right: auto;
    max-width: 45rem;
}

.comparison-panel {
    display: grid;
    gap: 0.55rem;
    align-content: start;
    min-width: 0;
}

.comparison-toolbar {
    display: grid;
    gap: 0.35rem;
    width: 100%;
}

.comparison-toolbar-bottom {
    padding-top: 0.05rem;
}

.comparison-label,
.comparison-figure figcaption {
    color: var(--ink-faint);
    font-size: 0.76rem;
    letter-spacing: 0.11em;
    text-transform: uppercase;
}

.comparison-options {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem 0.8rem;
}

.comparison-option {
    border: 0;
    padding: 0;
    background: none;
    color: var(--ink-faint);
    cursor: pointer;
    font: inherit;
    text-decoration: underline;
    text-underline-offset: 0.18em;
}

.comparison-option.is-active {
    color: var(--ink);
}

.comparison-target-description,
.comparison-summary,
.comparison-note {
    max-width: 45rem;
}

.comparison-target-description,
.comparison-summary {
    color: var(--ink);
}

.comparison-target-description {
    margin-top: 0.05rem;
}

.comparison-summary {
    margin-top: 0.9rem;
}

.comparison-note {
    margin-top: 0.9rem;
}

.comparison-figure {
    display: grid;
    gap: 0.3rem;
    width: 100%;
}

.comparison-reference-title,
.comparison-target-title {
    display: block;
    width: 100%;
}

.comparison-figure img {
    width: 100%;
    height: auto;
}

.site-footer {
    border-top: 1px solid var(--line);
    padding: 1.4rem 0 2rem;
}

.site-footer-inner p {
    margin: 0;
}

.reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 620ms ease, transform 620ms ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 980px) {
    .intro-grid,
    .image-pair {
        grid-template-columns: 1fr;
    }

    .category-block {
        grid-template-columns: 1fr;
        gap: 0.9rem;
        padding-bottom: 2.8rem;
    }

    .image-block-portrait,
    .image-block-poster {
        max-width: 100%;
    }

    .image-pair {
        max-width: 100%;
    }

    .image-pair .image-block-wide,
    .image-pair .image-block-portrait {
        width: 100%;
        max-width: 100%;
    }
}

@media (max-width: 760px) {
    .site-header-inner,
    .site-nav {
        flex-direction: column;
        align-items: flex-start;
    }

    .section-shell {
        padding-bottom: 3.5rem;
    }

    .intro,
    .essay {
        padding-top: 2rem;
    }

    .comparison-grid {
        grid-template-columns: 1fr;
        max-width: 100%;
    }
}