html:has(body.research-variant) {
    background: oklch(97.5% 0.006 252);
}

body.research-variant {
    --rv-bg: oklch(97.5% 0.006 252);
    --rv-paper: oklch(99% 0.004 252);
    --rv-soft: oklch(94.8% 0.009 252);
    --rv-line: oklch(86.5% 0.013 252);
    --rv-line-strong: oklch(34% 0.025 258);
    --rv-ink: oklch(24% 0.028 258);
    --rv-muted: oklch(48% 0.022 258);
    --rv-navy: oklch(28% 0.055 258);
    --rv-red: oklch(42% 0.14 28);
    --rv-portrait: oklch(36% 0.055 28);
    --rv-portrait-deep: oklch(27% 0.04 28);
    --rv-portrait-soft: oklch(95% 0.01 38);
    --rv-blue: oklch(43% 0.12 255);
    --rv-ochre: oklch(58% 0.11 78);
    --rv-focus: oklch(82% 0.11 88);
    --rv-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans CJK SC", "Noto Sans SC", "Source Han Sans SC", ui-sans-serif, system-ui, sans-serif;
    --rv-serif: "Songti SC", "STSong", "Noto Serif CJK SC", "Noto Serif SC", "Source Han Serif SC", "SimSun", ui-serif, serif;
    margin: 0;
    background: var(--rv-bg);
    color: var(--rv-ink);
    font-family: var(--rv-sans);
}

.research-variant [data-stage-color="red"] {
    --stage-color: var(--rv-red);
}

.research-variant [data-stage-color="blue"] {
    --stage-color: var(--rv-blue);
}

.research-variant [data-stage-color="ochre"] {
    --stage-color: var(--rv-ochre);
}

.research-variant .container {
    width: min(calc(100% - 2rem), 1280px);
}

.research-variant .site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    border-bottom: 1px solid oklch(94% 0.01 252 / 0.2);
    background: var(--rv-navy);
    backdrop-filter: none;
}

.research-variant .site-header__bar {
    min-height: 78px;
}

.research-variant .site-brand__cn,
.research-variant .site-brand__en {
    color: oklch(96% 0.008 252);
}

.research-variant .site-brand__cn {
    font-family: var(--rv-serif);
}

.research-variant .site-brand__en {
    opacity: 0.76;
}

.research-variant .site-nav {
    gap: clamp(1.1rem, 2.6vw, 2.25rem);
}

.research-variant .site-nav__link {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    border-bottom: 1px solid oklch(94% 0.01 252 / 0.34);
    border-radius: 0;
    background: transparent;
    color: oklch(95% 0.008 252);
    padding: 0.4rem 0;
    font-size: 0.84rem;
    letter-spacing: 0.04em;
}

.research-variant .site-nav__link:hover,
.research-variant .site-nav__link:focus-visible,
.research-variant .site-nav__link.is-current {
    border-color: oklch(96% 0.01 252);
    background: transparent;
    color: oklch(99% 0.004 252);
    outline: none;
}

.research-variant .site-main {
    padding: 1.1rem 0 0;
}

.research-variant .breadcrumb {
    margin-bottom: 0.8rem;
    color: var(--rv-muted);
    font-size: 0.78rem;
}

.research-variant .breadcrumb a {
    color: inherit;
}

.research-variant .site-nav__link:focus-visible,
.research-variant button:focus-visible,
.research-variant a:focus-visible {
    outline: 2px solid var(--rv-focus);
    outline-offset: 4px;
}

.rv-kicker,
.rv-section-head > span,
.rv-recruitment > div > span {
    color: var(--rv-red);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.rv-intro {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(26rem, 0.95fr);
    gap: clamp(2rem, 6vw, 6rem);
    border-top: 1px solid var(--rv-ink);
    border-bottom: 1px solid var(--rv-line);
    padding: 1rem 0 1.2rem;
}

.rv-intro h1 {
    max-width: 18ch;
    margin: 0.65rem 0 0;
    font-family: var(--rv-serif);
    font-size: clamp(2rem, 3.1vw, 3rem);
    font-weight: 400;
    line-height: 1.12;
}

.rv-intro > div:last-child {
    align-self: end;
}

.rv-intro p {
    max-width: 65ch;
    margin: 0;
    color: var(--rv-muted);
    font-size: 0.94rem;
    line-height: 1.68;
}

.rv-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem 0.9rem;
    margin-top: 0.85rem;
}

.rv-tags span {
    color: var(--rv-muted);
    font-size: 0.72rem;
}

.rv-tags span::before {
    content: "·";
    margin-right: 0.35rem;
    color: var(--rv-red);
}

.rv-section-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 2rem;
    border-top: 1px solid var(--rv-ink);
    padding-top: 0.9rem;
}

.rv-section-head h2 {
    margin: 0;
    font-family: var(--rv-serif);
    font-size: clamp(1.5rem, 2.2vw, 2rem);
    font-weight: 400;
}

.rv-figure {
    margin: 0;
}

.rv-figure__frame {
    overflow: hidden;
    border: 1px solid var(--rv-line);
    background: var(--rv-paper);
}

.rv-figure__frame img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.rv-figure[data-figure-tone="dark"] .rv-figure__frame {
    background: oklch(19% 0.02 258);
}

.rv-figure figcaption {
    display: flex;
    gap: 0.45rem;
    margin-top: 0.5rem;
    color: var(--rv-muted);
    font-size: 0.72rem;
    line-height: 1.5;
}

.rv-figure figcaption strong {
    flex: 0 0 auto;
    color: var(--stage-color, var(--rv-ink));
    letter-spacing: 0.04em;
}

.rv-term {
    color: var(--stage-color, var(--rv-red));
    font-weight: 600;
    white-space: nowrap;
}

.rv-definitions {
    border-top: 1px solid var(--rv-line-strong);
}

.rv-definition {
    display: grid;
    grid-template-columns: minmax(9rem, 0.34fr) minmax(0, 1fr);
    gap: 1.25rem;
    border-bottom: 1px solid var(--rv-line);
    padding: 1rem 0;
}

.rv-definition h3,
.rv-definition p {
    margin: 0;
}

.rv-definition h3 {
    font-family: var(--rv-serif);
    font-size: 1rem;
    line-height: 1.5;
}

.rv-definition p {
    color: var(--rv-muted);
    font-size: 0.91rem;
    line-height: 1.75;
}

.rv-note {
    display: grid;
    grid-template-columns: minmax(9rem, 0.34fr) minmax(0, 1fr);
    gap: 1.25rem;
    margin-top: 1.25rem;
    border-top: 1px solid var(--stage-color, var(--rv-red));
    border-bottom: 1px solid var(--rv-line);
    padding: 1rem 0;
}

.rv-note > span {
    color: var(--stage-color, var(--rv-red));
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.06em;
}

.rv-note h3,
.rv-note p {
    margin: 0;
}

.rv-note h3 {
    font-family: var(--rv-serif);
    font-size: 1.05rem;
}

.rv-note p {
    margin-top: 0.35rem;
    color: var(--rv-muted);
    font-size: 0.9rem;
    line-height: 1.7;
}

.rv-note a {
    display: inline-block;
    margin-top: 0.55rem;
    border-bottom: 1px solid currentColor;
    color: var(--stage-color, var(--rv-red));
    font-size: 0.78rem;
    text-decoration: none;
}

.rv-evidence {
    margin-top: clamp(4rem, 8vw, 7rem);
}

.rv-evidence__list {
    margin-top: 1.4rem;
    border-top: 1px solid var(--rv-line);
}

.rv-evidence__list article {
    display: grid;
    grid-template-columns: 2.25rem minmax(0, 1fr) auto;
    gap: clamp(1rem, 3vw, 2.5rem);
    align-items: start;
    border-bottom: 1px solid var(--rv-line);
    padding: 1.2rem 0;
}

.rv-evidence__index,
.rv-evidence__meta {
    color: var(--rv-red);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.rv-evidence__meta,
.rv-evidence__list h3,
.rv-evidence__list p {
    margin: 0;
}

.rv-evidence__list h3 {
    margin-top: 0.25rem;
    font-family: var(--rv-serif);
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    font-weight: 600;
    line-height: 1.4;
}

.rv-evidence__list p:not(.rv-evidence__meta) {
    margin-top: 0.35rem;
    color: var(--rv-muted);
    font-size: 0.88rem;
}

.rv-evidence__list a {
    border-bottom: 1px solid var(--rv-red);
    color: var(--rv-red);
    font-size: 0.78rem;
    text-decoration: none;
}

.rv-recruitment {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 2rem;
    margin: clamp(4rem, 8vw, 7rem) 0 0;
    border-top: 1px solid var(--rv-ink);
    padding: 1.2rem 0 2.5rem;
}

.rv-recruitment h2,
.rv-recruitment p {
    margin: 0;
}

.rv-recruitment h2 {
    margin-top: 0.35rem;
    font-family: var(--rv-serif);
    font-size: clamp(1.5rem, 2.4vw, 2.1rem);
    font-weight: 400;
}

.rv-recruitment p {
    max-width: 70ch;
    margin-top: 0.5rem;
    color: var(--rv-muted);
    font-size: 0.9rem;
}

.rv-recruitment__areas {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 0.9rem;
    margin-top: 0.8rem;
}

.rv-recruitment__areas span {
    color: var(--rv-muted);
    font-size: 0.72rem;
}

.rv-recruitment__areas span::before {
    content: "·";
    margin-right: 0.35rem;
    color: var(--rv-red);
}

.rv-recruitment__link,
.map-c-sidebar__recruit {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    justify-content: space-between;
    gap: 3rem;
    border-bottom: 1px solid var(--rv-red);
    color: var(--rv-ink);
    text-decoration: none;
}

.research-variant .site-footer {
    margin-top: 0;
    border-top: 1px solid var(--rv-line);
    background: var(--rv-soft);
}

/* Variant A: horizontal research map */
.variant-a .map-a {
    margin-top: clamp(1.5rem, 3vw, 2.5rem);
}

.variant-a .rv-intro {
    grid-template-columns: minmax(0, 1.18fr) minmax(24rem, 0.82fr);
    gap: clamp(2rem, 4vw, 4rem);
    padding-block: 0.75rem 0.9rem;
}

.variant-a .rv-intro h1 {
    max-width: none;
    margin-top: 0.45rem;
    font-size: clamp(1.8rem, 2.6vw, 2.5rem);
}

.variant-a .rv-intro p {
    font-size: 0.88rem;
    line-height: 1.58;
}

.variant-a .rv-tags {
    margin-top: 0.55rem;
}

.variant-a .map-a__head {
    margin-bottom: 0.8rem;
}

.map-a__rail {
    position: relative;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 1px solid var(--rv-line);
    border-bottom: 1px solid var(--rv-line);
}

.map-a__rail::before {
    content: "";
    position: absolute;
    top: 5.35rem;
    right: 0;
    left: 0;
    height: 1px;
    background: var(--rv-line-strong);
    pointer-events: none;
}

.map-a__rail::after {
    content: "→";
    position: absolute;
    top: 4.65rem;
    right: 0;
    color: var(--rv-ochre);
    font-size: 1.1rem;
    line-height: 1;
}

.map-a__stage {
    position: relative;
    display: grid;
    grid-template-rows: auto 1fr auto auto;
    min-width: 0;
    padding: 0.85rem clamp(0.8rem, 2vw, 1.35rem) 0.8rem;
}

.map-a__stage + .map-a__stage {
    border-left: 1px solid var(--rv-line);
}

.map-a__stage-head {
    position: relative;
    z-index: 1;
    display: block;
    min-height: 4.5rem;
}

.map-a__number {
    position: absolute;
    bottom: -1.25rem;
    left: 0;
    display: inline-flex;
    min-width: 2.5rem;
    min-height: 2.5rem;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--stage-color);
    border-radius: 50%;
    background: var(--rv-bg);
    color: var(--stage-color);
    font-family: var(--rv-serif);
    font-size: 1.15rem;
}

.map-a__stage-head small {
    display: block;
    overflow: hidden;
    color: var(--rv-muted);
    font-size: 0.65rem;
    letter-spacing: 0.05em;
    text-overflow: ellipsis;
    text-transform: uppercase;
    white-space: nowrap;
}

.map-a__stage-head strong {
    display: block;
    margin-top: 0.25rem;
    color: var(--rv-ink);
    font-family: var(--rv-serif);
    font-size: clamp(1.25rem, 2vw, 1.75rem);
    font-weight: 500;
    line-height: 1.2;
}

.map-a__figure {
    min-width: 0;
    padding-top: 1.8rem;
}

.map-a__figure .rv-figure__frame {
    aspect-ratio: 16 / 9 !important;
}

.map-a__figure .rv-figure__frame img {
    object-position: center;
}

.map-a__figure .rv-figure figcaption {
    display: none;
}

.map-a__hook {
    min-height: 3.2em;
    margin: 0.65rem 0 0;
    color: var(--rv-muted);
    font-size: 0.84rem;
    line-height: 1.6;
}

.map-a__action {
    display: flex;
    min-height: 44px;
    align-items: center;
    justify-content: space-between;
    border: 0;
    border-top: 1px solid var(--rv-line);
    background: transparent;
    color: var(--stage-color);
    padding: 0.5rem 0 0;
    font: inherit;
    font-size: 0.76rem;
    cursor: pointer;
}

.map-a__action span:last-child {
    font-size: 1rem;
    transition: transform 180ms cubic-bezier(0.25, 1, 0.5, 1);
}

.map-a__action.is-active span:last-child {
    transform: rotate(45deg);
}

.map-a__details {
    border-bottom: 1px solid var(--rv-line);
}

.map-a__detail {
    display: grid;
    grid-template-columns: minmax(15rem, 0.34fr) minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 5rem);
    padding: clamp(1.8rem, 4vw, 3rem) 0 clamp(2.5rem, 5vw, 4rem);
    animation: rv-detail-enter 280ms cubic-bezier(0.25, 1, 0.5, 1) both;
}

.map-a__detail > header > span {
    color: var(--stage-color);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.map-a__detail > header h2,
.map-a__detail > header p {
    margin: 0;
}

.map-a__detail > header .map-a__detail-caption {
    margin-top: 1.1rem;
    border-top: 1px solid var(--rv-line);
    padding-top: 0.65rem;
    font-size: 0.76rem;
    line-height: 1.55;
}

.map-a__detail-caption strong {
    margin-right: 0.45rem;
    color: var(--stage-color);
}

.map-a__detail > header h2 {
    margin-top: 0.4rem;
    font-family: var(--rv-serif);
    font-size: clamp(1.7rem, 3vw, 2.5rem);
    font-weight: 400;
}

.map-a__detail > header p {
    margin-top: 0.65rem;
    color: var(--rv-muted);
    font-size: 0.94rem;
    line-height: 1.7;
}

/* Variant C: vertical scientific figure plate */
.variant-c .site-main > .container {
    width: min(calc(100% - 2rem), 1380px);
}

.map-c-view[hidden] {
    display: none !important;
}

.map-c-view:not([hidden]) {
    animation: rv-view-enter 360ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.map-c-overview {
    display: grid;
    grid-template-columns: clamp(15rem, 22vw, 19rem) minmax(0, 1fr);
    height: clamp(600px, calc(100svh - 128px), 760px);
    overflow: hidden;
    border-top: 1px solid var(--rv-ink);
    border-bottom: 1px solid var(--rv-ink);
    background: var(--rv-paper);
}

.map-c-overview__intro {
    position: relative;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--rv-line);
    background: var(--rv-portrait-soft);
    padding: clamp(1.3rem, 2.5vw, 2.25rem);
}

.map-c-overview__letter {
    margin: clamp(2rem, 7vh, 4.5rem) 0 0;
    color: var(--rv-portrait);
    font-family: var(--rv-serif);
    font-size: clamp(4.5rem, 8vw, 7rem);
    font-weight: 400;
    line-height: 0.85;
}

.map-c-overview__intro h1 {
    margin: 1rem 0 0;
    border-top: 1px solid var(--rv-muted);
    padding-top: 1.2rem;
    color: var(--rv-portrait-deep);
    font-family: var(--rv-serif);
    font-size: clamp(2rem, 3.2vw, 3rem);
    font-weight: 400;
    line-height: 1.1;
}

.map-c-overview__intro > p:not(.map-c-overview__letter) {
    max-width: 28ch;
    margin: 1.1rem 0 0;
    color: var(--rv-muted);
    font-size: 0.86rem;
    line-height: 1.72;
}

.map-c-overview__intro > a {
    display: flex;
    min-height: 44px;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    border: 1px solid var(--rv-portrait);
    background: var(--rv-portrait);
    color: oklch(97% 0.008 28);
    padding: 0.8rem 0.9rem;
    text-decoration: none;
    transition: background-color 220ms cubic-bezier(0.25, 1, 0.5, 1), border-color 220ms cubic-bezier(0.25, 1, 0.5, 1), transform 220ms cubic-bezier(0.25, 1, 0.5, 1);
}

.map-c-overview__intro > a > span:first-child,
.research-canonical .map-c-sidebar__recruit > span:first-child {
    display: grid;
    gap: 0.15rem;
}

.map-c-overview__intro > a small,
.research-canonical .map-c-sidebar__recruit small {
    color: oklch(90% 0.018 28);
    font-size: 0.62rem;
    font-weight: 600;
    letter-spacing: 0.07em;
    text-transform: uppercase;
}

.map-c-overview__intro > a strong,
.research-canonical .map-c-sidebar__recruit strong {
    font-size: 0.86rem;
    font-weight: 600;
}

.map-c-overview__intro > a span:last-child {
    transition: transform 220ms cubic-bezier(0.25, 1, 0.5, 1);
}

.map-c-overview__intro > a:hover span:last-child,
.map-c-overview__intro > a:focus-visible span:last-child {
    transform: translateX(0.3rem);
}

.map-c-overview__intro > a:hover,
.map-c-overview__intro > a:focus-visible {
    border-color: var(--rv-portrait-deep);
    background: var(--rv-portrait-deep);
    transform: translateY(-2px);
}

.map-c-overview__plate {
    position: relative;
    display: grid;
    grid-template-rows: repeat(3, minmax(0, 1fr));
    min-width: 0;
    min-height: 0;
    overflow: hidden;
}

.map-c-overview__row {
    position: relative;
    display: grid;
    grid-template-columns: minmax(14rem, 0.43fr) minmax(0, 1fr);
    min-height: 0;
    overflow: hidden;
    background: color-mix(in oklch, var(--rv-paper) 96%, var(--stage-color));
    color: var(--rv-ink);
    text-decoration: none;
}

.map-c-overview__row + .map-c-overview__row {
    border-top: 1px solid var(--rv-line);
}

.map-c-overview__row::before {
    position: absolute;
    z-index: 2;
    top: 50%;
    left: 0;
    width: 0.65rem;
    height: 0.65rem;
    transform: translate(-50%, -50%);
    border: 2px solid var(--rv-paper);
    border-radius: 50%;
    background: var(--stage-color);
    box-shadow: 0 0 0 1px var(--stage-color);
    content: "";
}

.map-c-overview__copy {
    position: relative;
    z-index: 1;
    align-self: center;
    padding: clamp(1rem, 2.4vw, 2rem) clamp(1rem, 2.8vw, 2.5rem);
}

.map-c-overview__copy > span:first-child {
    color: var(--stage-color);
    font-size: 0.66rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.map-c-overview__copy h2,
.map-c-overview__copy p {
    margin: 0;
}

.map-c-overview__copy h2 {
    margin-top: 0.35rem;
    color: var(--stage-color);
    font-family: var(--rv-serif);
    font-size: clamp(1.45rem, 2.4vw, 2.25rem);
    font-weight: 600;
    line-height: 1.18;
}

.map-c-overview__copy p {
    max-width: 31ch;
    margin-top: 0.65rem;
    color: var(--rv-muted);
    font-size: 0.8rem;
    line-height: 1.6;
}

.map-c-overview__cue {
    position: absolute;
    right: 1rem;
    bottom: 0.9rem;
    color: var(--stage-color);
    font-size: 0.85rem;
    transition: transform 220ms cubic-bezier(0.25, 1, 0.5, 1);
}

.map-c-overview__visual {
    position: absolute;
    z-index: 0;
    inset: -5% 1% -5% 40%;
    min-width: 0;
    min-height: 0;
    overflow: visible;
    background: transparent;
    pointer-events: none;
}

.map-c-overview__visual img {
    position: absolute;
    inset: 0;
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    filter: drop-shadow(0 18px 24px oklch(23% 0.025 258 / 0.14));
    transition: transform 600ms cubic-bezier(0.16, 1, 0.3, 1), filter 300ms cubic-bezier(0.25, 1, 0.5, 1), opacity 300ms cubic-bezier(0.25, 1, 0.5, 1);
}

.map-c-overview__row[data-stage-color="blue"] .map-c-overview__visual {
    inset: -21% -1% -19% 38%;
}

.map-c-overview__row[data-stage-color="ochre"] .map-c-overview__visual {
    inset: -29% 1% -26% 43%;
}

.map-c-overview__row:hover .map-c-overview__visual img,
.map-c-overview__row:focus-visible .map-c-overview__visual img {
    transform: scale(1.035) translateY(-2px);
    filter: drop-shadow(0 22px 28px oklch(23% 0.025 258 / 0.18)) saturate(1.035) contrast(1.015);
}

.map-c-overview__row:hover .map-c-overview__cue,
.map-c-overview__row:focus-visible .map-c-overview__cue {
    transform: translateY(0.2rem);
}

.map-c-detail-heading {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 2rem;
    margin-top: clamp(4rem, 8vw, 7rem);
    border-top: 1px solid var(--rv-ink);
    padding: 0.9rem 0 1.2rem;
}

.map-c-detail-heading span {
    color: var(--rv-red);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.map-c-detail-heading h2 {
    margin: 0;
    font-family: var(--rv-serif);
    font-size: clamp(1.5rem, 2.4vw, 2.15rem);
    font-weight: 400;
}

.map-c-sidebar__back {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    gap: 0.6rem;
    margin: -0.35rem 0 1rem;
    border: 0;
    border-bottom: 1px solid var(--rv-line);
    background: transparent;
    color: var(--rv-muted);
    padding: 0;
    font: inherit;
    font-size: 0.76rem;
    cursor: pointer;
}

.map-c-sidebar__back span {
    color: var(--rv-red);
    transition: transform 220ms cubic-bezier(0.25, 1, 0.5, 1);
}

.map-c-sidebar__back:hover span,
.map-c-sidebar__back:focus-visible span {
    transform: translateX(-0.2rem);
}

.research-canonical .map-c-sidebar > .rv-kicker {
    display: block;
    margin-top: 0.45rem;
}

.map-c-layout {
    --map-c-directory-width: clamp(15rem, 22vw, 19rem);
    display: grid;
    grid-template-columns: var(--map-c-directory-width) minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 5rem);
    border-top: 1px solid var(--rv-ink);
}

.map-c-sidebar {
    position: sticky;
    top: 102px;
    align-self: start;
    min-height: calc(100vh - 122px);
    padding: 1.2rem 0 1.5rem;
}

.research-canonical .map-c-sidebar {
    background: var(--rv-portrait-soft);
    box-shadow: 0 0 0 100vmax var(--rv-portrait-soft);
    clip-path: inset(0 0 0 -100vmax);
    padding-right: clamp(1rem, 2.2vw, 1.8rem);
}

.map-c-sidebar h1,
.map-c-sidebar h2,
.map-c-sidebar p {
    margin: 0;
}

.map-c-sidebar h1,
.map-c-sidebar h2 {
    margin-top: 0.8rem;
    font-family: var(--rv-serif);
    font-size: clamp(1.8rem, 2.7vw, 2.65rem);
    font-weight: 400;
    line-height: 1.16;
}

.research-canonical .map-c-sidebar h1 {
    color: var(--rv-portrait-deep);
}

.map-c-sidebar > p {
    margin-top: 1rem;
    color: var(--rv-muted);
    font-size: 0.86rem;
    line-height: 1.72;
}

.map-c-sidebar .rv-tags {
    display: none;
}

.map-c-sidebar nav {
    display: grid;
    margin-top: 1.5rem;
    border-top: 1px solid var(--rv-line);
}

.map-c-sidebar nav a {
    display: grid;
    grid-template-columns: 1.75rem 1fr;
    gap: 0.6rem;
    border-bottom: 1px solid var(--rv-line);
    padding: 0.65rem 0;
    color: var(--rv-muted);
    font-size: 0.76rem;
    text-decoration: none;
}

.map-c-sidebar nav a > span:first-child {
    color: var(--rv-red);
    font-weight: 700;
}

.map-c-sidebar nav a.is-current {
    color: var(--stage-color, var(--rv-ink));
    font-weight: 600;
}

.map-c-sidebar nav a.is-current > span:first-child {
    color: var(--stage-color, var(--rv-red));
}

.map-c-sidebar__recruit {
    position: absolute;
    right: 0;
    bottom: 1.5rem;
    left: 0;
    font-size: 0.8rem;
}

.research-canonical .map-c-sidebar__recruit {
    min-height: 64px;
    border: 1px solid var(--rv-portrait);
    background: var(--rv-portrait);
    color: oklch(97% 0.008 28);
    padding: 0.75rem 0.9rem;
    transition: background-color 220ms cubic-bezier(0.25, 1, 0.5, 1), border-color 220ms cubic-bezier(0.25, 1, 0.5, 1), transform 220ms cubic-bezier(0.25, 1, 0.5, 1);
}

.research-canonical .map-c-sidebar__recruit:hover,
.research-canonical .map-c-sidebar__recruit:focus-visible {
    border-color: var(--rv-portrait-deep);
    background: var(--rv-portrait-deep);
    transform: translateY(-2px);
}

.research-canonical .map-c-sidebar__recruit > span:last-child {
    font-size: 1rem;
    transition: transform 220ms cubic-bezier(0.25, 1, 0.5, 1);
}

.research-canonical .map-c-sidebar__recruit:hover > span:last-child,
.research-canonical .map-c-sidebar__recruit:focus-visible > span:last-child {
    transform: translate(0.2rem, -0.2rem);
}

.map-c-plate {
    position: relative;
    border-left: 1px solid var(--rv-line);
}

.map-c__stage {
    position: relative;
    display: grid;
    grid-template-columns: minmax(12rem, 0.45fr) minmax(0, 1fr);
    grid-template-areas:
        "copy visual"
        "detail detail";
    min-height: 285px;
    border-bottom: 1px solid var(--rv-line);
    padding-left: clamp(2.25rem, 4vw, 4rem);
}

.research-canonical .map-c__stage--canonical {
    min-height: calc(100svh - 130px);
}

.research-canonical .map-c__stage--canonical[hidden] {
    display: none !important;
}

.research-canonical .map-c__stage--canonical .map-c__copy {
    align-self: start;
    padding-top: clamp(2.5rem, 8vh, 5.5rem);
}

.research-canonical .map-c__stage--canonical .map-c__visual {
    align-self: start;
    padding-top: 1.25rem;
}

.research-canonical .map-c__stage--canonical .map-c__visual .rv-figure__frame {
    aspect-ratio: 4 / 3 !important;
}

.research-canonical .map-c__stage--canonical .map-c__detail {
    padding-bottom: clamp(3rem, 7vw, 6rem);
}

.map-c__marker {
    position: absolute;
    top: 142px;
    left: 0;
    width: 2.8rem;
    height: 2.8rem;
    transform: translate(-50%, -50%);
    border: 1px solid var(--stage-color);
    border-radius: 50%;
    background: var(--rv-bg);
    color: var(--stage-color);
}

.map-c__marker span {
    display: grid;
    width: 100%;
    height: 100%;
    place-items: center;
    font-family: var(--rv-serif);
    font-size: 1.1rem;
}

.map-c__copy {
    grid-area: copy;
    align-self: center;
    padding: 1.2rem clamp(1rem, 3vw, 2.5rem) 1.2rem 0;
}

.map-c__copy > span {
    color: var(--stage-color);
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
}

.map-c__copy h2,
.map-c__copy p {
    margin: 0;
}

.map-c__copy h2 {
    margin-top: 0.35rem;
    font-family: var(--rv-serif);
    font-size: clamp(1.45rem, 2.35vw, 2.15rem);
    font-weight: 400;
    line-height: 1.18;
}

.map-c__copy p {
    margin-top: 0.7rem;
    color: var(--rv-muted);
    font-size: 0.86rem;
    line-height: 1.65;
}

.map-c__copy button {
    display: flex;
    width: 100%;
    min-height: 44px;
    align-items: center;
    justify-content: space-between;
    margin-top: 1rem;
    border: 0;
    border-top: 1px solid var(--rv-line);
    background: transparent;
    color: var(--stage-color);
    padding: 0.55rem 0 0;
    font: inherit;
    font-size: 0.76rem;
    cursor: pointer;
}

.map-c__copy button span:last-child {
    font-size: 1rem;
    transition: transform 180ms cubic-bezier(0.25, 1, 0.5, 1);
}

.map-c__copy button.is-active span:last-child {
    transform: rotate(45deg);
}

.map-c__visual {
    grid-area: visual;
    min-width: 0;
    padding: 0.75rem 0;
}

.map-c__visual .rv-figure {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 8.5rem;
    align-items: end;
    gap: 0.8rem;
}

.map-c__visual .rv-figure__frame {
    aspect-ratio: 16 / 7 !important;
    border: 0;
    background: transparent;
}

.map-c__visual .rv-figure__frame img {
    object-fit: cover;
}

.map-c__visual .rv-figure figcaption {
    margin: 0;
    border-top: 1px solid var(--stage-color);
    padding-top: 0.5rem;
}

.map-c__stage.is-reversed .map-c__visual .rv-figure__frame img {
    object-position: 55% center;
}

/* Paper figures carry their own complete axes and labels; cropping changes the evidence. */
.map-c__visual .rv-figure[data-figure-tone="paper"] .rv-figure__frame {
    background: oklch(99% 0.004 252);
}

.map-c__visual .rv-figure[data-figure-tone="paper"] .rv-figure__frame img {
    object-fit: contain;
    object-position: center;
}

.map-c__detail {
    grid-area: detail;
    padding: 0 0 2.5rem;
    animation: rv-detail-enter 280ms cubic-bezier(0.25, 1, 0.5, 1) both;
}

.map-c__detail .rv-definitions,
.map-c__detail .rv-note {
    margin-left: min(18rem, 25%);
}

@media (min-width: 1051px) {
    .research-canonical .map-c-layout {
        background: transparent;
    }

    .research-canonical .map-c-sidebar {
        min-height: 0;
        background: var(--rv-portrait-soft);
        box-shadow: 0 0 0 100vmax var(--rv-portrait-soft);
        clip-path: inset(0 0 0 -100vmax);
        padding-bottom: 2rem;
    }

    .research-canonical .map-c-sidebar__recruit {
        position: relative;
        right: auto;
        bottom: auto;
        left: auto;
        margin-top: clamp(1.5rem, 3vh, 2.25rem);
    }

    .research-canonical .map-c__stage--canonical {
        grid-template-columns: minmax(14rem, 0.36fr) minmax(0, 0.64fr);
        grid-template-rows: auto auto;
        min-height: 0;
    }

    .research-canonical .map-c__stage--canonical .map-c__copy {
        padding-top: clamp(2.25rem, 4vw, 3.5rem);
    }

    .research-canonical .map-c__stage--canonical .map-c__visual {
        padding-top: clamp(1.5rem, 3vw, 2.5rem);
    }

    .research-canonical .map-c__stage--canonical .map-c__visual .rv-figure {
        grid-template-columns: minmax(0, 1fr);
        align-items: start;
        gap: 0.65rem;
    }

    .research-canonical .map-c__stage--canonical .map-c__visual .rv-figure figcaption {
        max-width: 72ch;
        line-height: 1.55;
    }

    .research-canonical .map-c__stage--canonical .map-c__detail {
        margin-top: clamp(1.5rem, 3vw, 2.5rem);
        padding-bottom: clamp(2.5rem, 5vw, 4.5rem);
    }

    .research-canonical .map-c__stage--canonical .map-c__detail .rv-definitions,
    .research-canonical .map-c__stage--canonical .map-c__detail .rv-note {
        margin-left: 0;
    }
}

.map-c-lower {
    width: min(calc(100% - 2rem), 1280px);
    margin: 0 auto;
}

@keyframes rv-detail-enter {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes rv-view-enter {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

::view-transition-group(research-molecular-glue),
::view-transition-group(research-e3-recognition),
::view-transition-group(research-target-omics) {
    animation-duration: 480ms;
    animation-timing-function: cubic-bezier(0.22, 1, 0.36, 1);
}

::view-transition-old(root) {
    animation: 170ms cubic-bezier(0.25, 1, 0.5, 1) both rv-view-fade-out;
}

::view-transition-new(root) {
    animation: 360ms cubic-bezier(0.22, 1, 0.36, 1) both rv-view-fade-in;
}

@keyframes rv-view-fade-out {
    to {
        opacity: 0;
    }
}

@keyframes rv-view-fade-in {
    from {
        opacity: 0;
    }
}

@media (max-width: 1050px) {
    .rv-intro {
        grid-template-columns: 1fr;
        gap: 0.8rem;
    }

    .variant-a .rv-intro {
        grid-template-columns: 1fr;
        gap: 0.8rem;
    }

    .rv-intro h1 {
        max-width: none;
    }

    .map-a__rail {
        grid-template-columns: 1fr;
    }

    .map-a__rail::before,
    .map-a__rail::after {
        display: none;
    }

    .map-a__stage {
        grid-template-columns: minmax(11rem, 0.4fr) minmax(14rem, 0.6fr);
        grid-template-rows: auto auto auto;
        column-gap: 1.25rem;
    }

    .map-a__stage + .map-a__stage {
        border-top: 1px solid var(--rv-line);
        border-left: 0;
    }

    .map-a__stage-head {
        grid-column: 1;
    }

    .map-a__figure {
        grid-column: 2;
        grid-row: 1 / 4;
        padding-top: 0;
    }

    .map-a__hook,
    .map-a__action {
        grid-column: 1;
    }

    .map-a__hook {
        min-height: 0;
    }

    .map-c-layout {
        background: transparent;
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .map-c-overview {
        grid-template-columns: 1fr;
        height: auto;
        min-height: 0;
    }

    .map-c-overview__intro {
        min-height: 27rem;
        border-right: 0;
        border-bottom: 1px solid var(--rv-line);
    }

    .map-c-overview__letter {
        margin-top: 2rem;
    }

    .map-c-overview__intro > p:not(.map-c-overview__letter) {
        max-width: 62ch;
    }

    .map-c-overview__intro > a {
        width: min(100%, 18rem);
    }

    .map-c-overview__plate {
        grid-template-rows: repeat(3, minmax(15rem, auto));
    }

    .map-c-sidebar {
        position: relative;
        top: auto;
        min-height: 0;
        border-bottom: 1px solid var(--rv-line);
    }

    .research-canonical .map-c__stage--canonical {
        min-height: 0;
    }

    .map-c-sidebar__recruit {
        position: relative;
        right: auto;
        bottom: auto;
        left: auto;
        margin-top: 1.2rem;
    }

    .map-c-sidebar nav {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .map-c-sidebar nav a + a {
        border-left: 1px solid var(--rv-line);
        padding-left: 0.7rem;
    }
}

@media (max-width: 760px) {
    .research-variant .site-header {
        position: relative;
    }

    .research-variant .site-header__bar {
        min-height: 0;
        flex-wrap: wrap;
        padding: 0.9rem 0;
    }

    .research-variant .site-nav {
        display: grid;
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 0.65rem;
    }

    .research-variant .site-nav__link {
        justify-content: center;
        min-width: 0;
        padding-inline: 0.1rem;
        font-size: 0.72rem;
        text-align: center;
    }

    .rv-intro h1 {
        font-size: clamp(1.9rem, 9vw, 2.35rem);
    }

    .rv-section-head {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.3rem;
    }

    .rv-definition,
    .rv-note {
        grid-template-columns: 1fr;
        gap: 0.35rem;
    }

    .rv-evidence__list article {
        grid-template-columns: 1.75rem minmax(0, 1fr);
    }

    .rv-evidence__list article > a {
        grid-column: 2;
        width: fit-content;
    }

    .rv-recruitment {
        grid-template-columns: 1fr;
    }

    .rv-recruitment__link {
        width: 100%;
    }

    .map-a__stage {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto auto;
        padding-inline: 0.25rem;
    }

    .map-a__stage-head,
    .map-a__figure,
    .map-a__hook,
    .map-a__action {
        grid-column: 1;
    }

    .map-a__figure {
        grid-row: auto;
        margin-top: 0.5rem;
    }

    .map-a__detail {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .map-c-sidebar nav {
        grid-template-columns: 1fr;
    }

    .map-c-overview__intro {
        min-height: 25rem;
        padding: 1.25rem;
    }

    .map-c-overview__letter {
        font-size: 4.8rem;
    }

    .map-c-overview__intro h1 {
        font-size: 2.2rem;
    }

    .map-c-overview__row {
        grid-template-columns: 1fr;
        grid-template-rows: auto 12rem;
    }

    .map-c-overview__visual,
    .map-c-overview__row[data-stage-color="blue"] .map-c-overview__visual,
    .map-c-overview__row[data-stage-color="ochre"] .map-c-overview__visual {
        inset: 31% -16% -8% 25%;
        opacity: 0.92;
    }

    .map-c-overview__copy {
        padding: 1.25rem;
    }

    .map-c-overview__copy p {
        max-width: none;
    }

    .map-c-overview__row::before {
        display: none;
    }

    .map-c-detail-heading {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.35rem;
    }

    .map-c-sidebar nav a + a {
        border-left: 0;
        padding-left: 0;
    }

    .map-c-plate {
        margin-left: 1.25rem;
    }

    .map-c__stage {
        grid-template-columns: 1fr;
        grid-template-areas:
            "copy"
            "visual"
            "detail";
        padding-left: 2rem;
    }

    .map-c__marker {
        top: 2.25rem;
    }

    .map-c__visual .rv-figure {
        grid-template-columns: 1fr;
    }

    .map-c__visual .rv-figure__frame {
        aspect-ratio: 4 / 3 !important;
    }

    .map-c__detail .rv-definitions,
    .map-c__detail .rv-note {
        margin-left: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .research-variant *,
    .research-variant *::before,
    .research-variant *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-delay: 0s !important;
        transition-duration: 0.01ms !important;
    }

    ::view-transition-group(*),
    ::view-transition-old(*),
    ::view-transition-new(*) {
        animation-duration: 0.01ms !important;
    }
}

@media print {
    .research-variant .site-header,
    .research-variant .site-footer,
    .research-variant .breadcrumb,
    .research-variant button,
    .map-c-sidebar nav,
    .map-c-sidebar__recruit {
        display: none !important;
    }

    .research-variant [hidden] {
        display: block !important;
    }

    .research-canonical .map-c__stage--canonical[hidden] {
        display: grid !important;
    }

    .map-c-sidebar,
    .map-c-layout {
        display: block;
        position: static;
    }
}

.research-variant .site-language-toggle {
    color: oklch(82% 0.012 252);
}

.research-variant .site-language-toggle button[aria-pressed="true"] {
    color: oklch(99% 0.004 252);
}

body[data-language="en"].research-variant {
    --rv-serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
}

body[data-language="en"].research-variant .site-brand__cn {
    font-family: var(--rv-serif);
}

body[data-language="en"].research-variant .map-c-overview__intro h1,
body[data-language="en"].research-variant .map-c-sidebar h1,
body[data-language="en"].research-variant .map-c__copy h2,
body[data-language="en"].research-variant .map-c-overview__copy h2,
body[data-language="en"].research-variant .rv-definition h3,
body[data-language="en"].research-variant .rv-section-head h2 {
    font-family: var(--rv-serif);
    letter-spacing: -0.035em;
}

body[data-language="en"].research-variant .map-c-overview__intro h1 {
    max-width: 9ch;
    font-size: clamp(2rem, 3.2vw, 3rem);
    line-height: 0.98;
}

body[data-language="en"].research-variant .map-c-overview__intro > p:not(.map-c-overview__letter) {
    max-width: 32ch;
    font-size: 0.78rem;
    line-height: 1.62;
}

body[data-language="en"].research-variant .map-c-overview__row {
    grid-template-columns: minmax(17rem, 0.49fr) minmax(0, 1fr);
}

body[data-language="en"].research-variant .map-c-overview__copy {
    padding-right: 0.8rem;
}

body[data-language="en"].research-variant .map-c-overview__copy h2 {
    max-width: 18ch;
    font-size: clamp(1.35rem, 2vw, 1.9rem);
    line-height: 1.02;
}

body[data-language="en"].research-variant .map-c-overview__copy p {
    max-width: 39ch;
    margin-top: 0.5rem;
    font-size: 0.75rem;
    line-height: 1.48;
}

body[data-language="en"].research-variant .map-c-overview__visual {
    inset-inline-start: 46%;
}

body[data-language="en"].research-variant .map-c-sidebar nav a {
    font-size: 0.72rem;
    line-height: 1.32;
}

body[data-language="en"].research-variant .map-c__copy h2 {
    max-width: 15ch;
    font-size: clamp(1.7rem, 2.7vw, 2.45rem);
    line-height: 1.02;
}

body[data-language="en"].research-variant .map-c__copy p {
    max-width: 39ch;
    line-height: 1.6;
}

body[data-language="en"].research-variant .rv-definition {
    grid-template-columns: minmax(11rem, 0.38fr) minmax(0, 1fr);
    gap: 1.6rem;
}

body[data-language="en"].research-variant .rv-definition h3 {
    font-size: 1.08rem;
    line-height: 1.28;
}

body[data-language="en"].research-variant .rv-definition p,
body[data-language="en"].research-variant .rv-note p,
body[data-language="en"].research-variant .rv-evidence__list article > div > p:last-child {
    max-width: 68ch;
    line-height: 1.68;
}

body[data-language="en"].research-variant .rv-recruitment h2,
body[data-language="en"].research-variant .rv-section-head h2 {
    max-width: 24ch;
    line-height: 1.08;
}

@media (max-width: 1050px) {
    body[data-language="en"].research-variant .map-c-overview__intro h1,
    body[data-language="en"].research-variant .map-c-overview__intro > p:not(.map-c-overview__letter) {
        max-width: 28ch;
    }
}

@media (max-width: 760px) {
    body[data-language="en"].research-variant .map-c-overview__row {
        grid-template-columns: 1fr;
    }

    body[data-language="en"].research-variant .map-c-overview__copy h2 {
        max-width: 20ch;
        font-size: clamp(1.55rem, 7.5vw, 2rem);
    }

    body[data-language="en"].research-variant .map-c-overview__copy p {
        max-width: 42ch;
    }

    body[data-language="en"].research-variant .rv-definition {
        grid-template-columns: 1fr;
        gap: 0.45rem;
    }
}