:root {
    --page: #fbfaf7;
    --surface: #f3f1ec;
    --ink: #242421;
    --muted: #6c6a64;
    --accent: #315f8c;
    --line: #dedbd3;
    --white: #ffffff;
    --content: 43rem;
    --shell: 66rem;
    --gutter: clamp(1.25rem, 4vw, 2rem);
    --serif: 'Iowan Old Style', 'Palatino Linotype', Palatino, Georgia, serif;
    --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --cjk-serif: 'Songti SC', STSong, 'Noto Serif CJK SC', 'Source Han Serif SC', serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 2rem;
}

html.is-scrubbing {
    scroll-behavior: auto;
}

body {
    margin: 0;
    min-width: 20rem;
    min-height: 100vh;
    color: var(--ink);
    background: var(--page);
    font-family: var(--sans);
    font-size: 1rem;
    line-height: 1.65;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: inherit;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.18em;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

::selection {
    color: var(--white);
    background: var(--accent);
}

.skip-link {
    position: fixed;
    top: 0.75rem;
    left: 0.75rem;
    z-index: 100;
    padding: 0.6rem 0.85rem;
    color: var(--white);
    background: var(--ink);
    font-size: 0.8rem;
    transform: translateY(-160%);
}

.skip-link:focus {
    transform: translateY(0);
}

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

.site-header,
.site-footer,
.home-main,
.article {
    width: min(100%, var(--shell));
    margin-inline: auto;
    padding-inline: var(--gutter);
}

.site-header {
    display: flex;
    min-height: 5rem;
    align-items: center;
}

.wordmark {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--serif);
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    text-decoration: none;
}

.wordmark__mark {
    color: var(--accent);
    font-family: var(--sans);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: -0.04em;
}

.site-footer {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    margin-top: 5rem;
    padding-block: 2rem;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.72rem;
}

.site-footer p {
    margin: 0;
}

.eyebrow {
    margin: 0 0 0.75rem;
    color: var(--accent);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.home-main {
    max-width: calc(var(--content) + var(--gutter) * 2);
    padding-block: clamp(3.5rem, 9vw, 7rem);
}

.home-intro {
    margin-bottom: clamp(4.5rem, 10vw, 7rem);
}

.home-intro h1 {
    max-width: 15ch;
    margin: 0;
    font-family: var(--serif);
    font-size: clamp(2.55rem, 8vw, 4.75rem);
    font-weight: 500;
    line-height: 1.04;
    letter-spacing: -0.045em;
}

.home-intro__lede {
    max-width: 36rem;
    margin: 1.4rem 0 0;
    color: var(--muted);
    font-size: clamp(1rem, 2vw, 1.15rem);
    line-height: 1.65;
}

.section-heading {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
    padding-bottom: 0.7rem;
    border-bottom: 1px solid var(--line);
}

.section-heading h2,
.section-heading span {
    margin: 0;
    color: var(--muted);
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.article-entry {
    display: grid;
    gap: 1.5rem;
    padding-block: 1.75rem;
    text-decoration: none;
}

.article-entry__number {
    display: none;
}

.article-entry__meta {
    margin: 0 0 0.65rem;
    color: var(--muted);
    font-size: 0.7rem;
    letter-spacing: 0.04em;
}

.article-entry h3 {
    max-width: 23ch;
    margin: 0;
    font-family: var(--serif);
    font-size: clamp(1.75rem, 5vw, 2.35rem);
    font-weight: 500;
    line-height: 1.12;
    letter-spacing: -0.03em;
}

.article-entry__body > p:not(.article-entry__meta) {
    margin: 0.9rem 0;
    color: var(--muted);
    line-height: 1.65;
}

.text-link,
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 700;
    text-decoration: none;
}

.text-link {
    border-bottom: 1px solid color-mix(in srgb, var(--accent) 45%, transparent);
}

.article-entry__figure {
    margin: 0;
    overflow: hidden;
    border-radius: 0.2rem;
    background: var(--surface);
}

.article-entry__figure img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    opacity: 0.94;
    transition: opacity 180ms ease;
}

.article-entry:hover .article-entry__figure img {
    opacity: 1;
}

.article-entry--text {
    border-bottom: 1px solid var(--line);
}

.reading-progress {
    position: fixed;
    inset: 0 0 auto;
    z-index: 50;
    height: 2px;
}

.reading-progress span {
    display: block;
    width: 0;
    height: 100%;
    background: var(--accent);
}

.article-hero {
    max-width: var(--content);
    margin-inline: auto;
    padding-block: clamp(2.5rem, 7vw, 5.5rem) clamp(2rem, 5vw, 3.5rem);
}

.back-link {
    margin-bottom: clamp(3rem, 8vw, 5.5rem);
    color: var(--muted);
}

.back-link:hover {
    color: var(--accent);
}

.article-hero h1 {
    margin: 0;
    font-family: var(--serif);
    font-size: clamp(2.55rem, 7.5vw, 4.85rem);
    font-weight: 500;
    line-height: 1.04;
    letter-spacing: -0.045em;
}

.article-hero__dek {
    margin: 1.5rem 0 0;
    color: var(--muted);
    font-family: var(--serif);
    font-size: clamp(1.15rem, 2.5vw, 1.38rem);
    line-height: 1.55;
}

.article-meta {
    display: flex;
    gap: 1.25rem;
    margin-top: 1.5rem;
    color: var(--muted);
    font-size: 0.72rem;
}

.language-switch {
    display: inline-flex;
    gap: 0.2rem;
    margin-top: 1.5rem;
    padding: 0.2rem;
    background: var(--surface);
    border-radius: 0.2rem;
    font-size: 0.74rem;
}

.language-switch a {
    padding: 0.35rem 0.65rem;
    color: var(--muted);
    border-radius: 0.15rem;
    text-decoration: none;
}

.language-switch a[aria-current='page'] {
    color: var(--white);
    background: var(--accent);
}

.hero-figure {
    width: min(100%, 56rem);
    margin: 0 auto;
}

.hero-figure img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: 0.2rem;
}

.hero-figure figcaption {
    max-width: var(--content);
    margin-inline: auto;
    padding-top: 0.7rem;
    color: var(--muted);
    font-size: 0.72rem;
    line-height: 1.5;
}

.article-layout {
    display: grid;
    justify-items: center;
    gap: 3.5rem;
    padding-block: clamp(3.5rem, 8vw, 6rem);
}

.article-toc,
.article-body {
    width: min(100%, var(--content));
}

.article-toc {
    padding: 1.25rem 0 1.25rem 1.25rem;
    border-left: 2px solid var(--line);
}

.article-toc > p {
    margin: 0 0 0.7rem;
    color: var(--muted);
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.article-toc ol {
    display: grid;
    gap: 0.35rem;
    margin: 0;
    padding-left: 0;
    color: var(--muted);
    font-size: 0.82rem;
    list-style: none;
}

.article-toc__list {
    counter-reset: article-section;
    max-height: 20rem;
    padding-right: 0.75rem;
    overflow-y: auto;
    overscroll-behavior: contain;
    scrollbar-color: var(--line) transparent;
    scrollbar-width: thin;
}

.article-toc__list li {
    display: grid;
    grid-template-columns: 2rem minmax(0, 1fr);
    gap: 0.45rem;
    counter-increment: article-section;
}

.article-toc__list li::before {
    color: var(--muted);
    content: counter(article-section) ".";
    font-variant-numeric: tabular-nums;
    text-align: right;
}

.article-toc a {
    min-width: 0;
    text-decoration-color: transparent;
}

.article-toc a:hover {
    color: var(--accent);
    text-decoration-color: currentColor;
}

.article-toc a.is-current {
    color: var(--accent);
    font-weight: 700;
    text-decoration-color: currentColor;
}

.section-scrubber {
    --scrubber-y: 0px;
    position: fixed;
    top: 50%;
    inset-inline-end: max(0px, env(safe-area-inset-right));
    z-index: 45;
    display: none;
    transform: translateY(-50%);
    opacity: 0.3;
    transition: opacity 160ms ease;
}

.section-scrubber.is-ready {
    display: block;
}

.section-scrubber:is(:hover, :focus-within, .is-interacting) {
    opacity: 1;
}

.section-scrubber__control {
    position: relative;
    width: 44px;
    height: min(68dvh, max(10rem, calc(var(--scrubber-count) * 0.625rem)));
    min-height: 10rem;
    cursor: ns-resize;
    outline: none;
    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
}

.section-scrubber__control:focus-visible::after {
    position: absolute;
    inset: 0.15rem;
    content: '';
    border: 2px solid var(--accent);
    border-radius: 999px;
}

.section-scrubber__track {
    position: absolute;
    inset-block: 0.75rem;
    inset-inline-end: 0.3rem;
    display: flex;
    width: 0.75rem;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    pointer-events: none;
}

.section-scrubber__dot {
    display: block;
    width: 3.5px;
    height: 3.5px;
    flex: 0 0 auto;
    background: var(--muted);
    border-radius: 50%;
    opacity: 0.72;
    transform: scale(1);
    transition:
        background-color 220ms ease-out,
        box-shadow 220ms ease-out,
        opacity 220ms ease-out,
        transform 220ms ease-out;
}

.section-scrubber__dot.is-current {
    background: var(--accent);
    box-shadow: 0 0 0 2px rgba(49, 95, 140, 0.14);
    opacity: 1;
    transform: scale(1.45);
}

.section-scrubber__bubble {
    position: absolute;
    top: var(--scrubber-y);
    inset-inline-end: 2.1rem;
    max-width: min(15rem, calc(100vw - 4rem));
    padding: 0.4rem 0.65rem;
    color: var(--white);
    background: var(--ink);
    border-radius: 0.2rem;
    font-size: 0.72rem;
    font-weight: 700;
    line-height: 1.35;
    opacity: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    transform: translateY(-50%) translateX(0.35rem);
    transition: opacity 120ms ease, transform 120ms ease;
    white-space: nowrap;
}

.section-scrubber.is-interacting .section-scrubber__bubble {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
}

body.article-page .article-body {
    padding-inline-end: 0.5rem;
}

.article-body {
    min-width: 0;
    font-family: var(--serif);
    font-size: clamp(1.08rem, 2vw, 1.16rem);
    line-height: 1.82;
}

.article-body p,
.article-body li,
.article-body dd {
    color: #343430;
}

.article-body p {
    margin: 0 0 1.45rem;
}

.article-body .lead {
    color: var(--ink);
    font-size: clamp(1.24rem, 3vw, 1.5rem);
    line-height: 1.62;
}

.article-body section {
    padding-top: clamp(3.5rem, 8vw, 5.5rem);
}

.book-layout {
    padding-top: clamp(2rem, 5vw, 4rem);
}

.book-body[lang='zh-CN'],
.book-article[lang='zh-CN'] .book-body {
    font-family: var(--cjk-serif);
    line-height: 1.95;
}

.source-note {
    margin-bottom: clamp(3rem, 7vw, 5rem);
    padding: 1.25rem;
    color: var(--muted);
    background: var(--surface);
    border-left: 2px solid var(--accent);
    font-family: var(--sans);
    font-size: 0.82rem;
    line-height: 1.7;
}

.source-note p {
    margin: 0;
    color: var(--muted);
}

.book-section {
    margin-top: 1.5rem;
    padding-top: 2.5rem !important;
    border-top: 1px solid var(--line);
    scroll-margin-top: 1.5rem;
}

.book-section:first-of-type {
    margin-top: 0;
}

.article-body .book-section__heading {
    margin: 0 0 1.15rem;
    font-family: var(--sans);
    font-weight: 600;
    line-height: 1.35;
    letter-spacing: -0.015em;
}

.book-section__number {
    display: block;
    margin-bottom: 0.35rem;
    color: var(--accent);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.book-section__title {
    display: block;
    color: var(--ink);
    font-size: clamp(1.25rem, 4.5vw, 1.6rem);
}

.book-end__links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
}

.section-number {
    margin: 0 0 0.55rem !important;
    color: var(--muted) !important;
    font-family: var(--sans);
    font-size: 0.68rem;
    letter-spacing: 0.08em;
}

.article-body h2 {
    margin: 0 0 1.4rem;
    font-size: clamp(2rem, 5.5vw, 3rem);
    font-weight: 500;
    line-height: 1.12;
    letter-spacing: -0.035em;
}

.article-body h3 {
    margin: 2.75rem 0 1rem;
    font-size: 1.35rem;
    font-weight: 600;
    line-height: 1.3;
}

.article-body ul,
.article-body ol {
    margin: 0 0 1.8rem;
    padding-left: 1.3rem;
}

.article-body li {
    margin-bottom: 0.5rem;
    padding-left: 0.2rem;
}

.article-body blockquote {
    margin: 2.75rem 0;
    padding-left: 1.4rem;
    border-left: 2px solid var(--accent);
}

.article-body blockquote p {
    margin: 0;
    color: var(--ink);
    font-size: clamp(1.35rem, 3.5vw, 1.8rem);
    font-style: italic;
    line-height: 1.5;
}

.process {
    display: grid;
    margin: 2.2rem 0 2.75rem;
    border-block: 1px solid var(--line);
}

.process div {
    display: grid;
    grid-template-columns: 2rem 1fr;
    gap: 0.05rem 0.75rem;
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--line);
    font-family: var(--sans);
}

.process div:last-child {
    border-bottom: 0;
}

.process span {
    grid-row: span 2;
    color: var(--muted);
    font-size: 0.65rem;
}

.process strong {
    font-size: 0.85rem;
}

.process small {
    color: var(--muted);
    font-size: 0.76rem;
}

.example-card,
.callout {
    margin: 2.3rem 0;
    padding: 1.35rem;
    background: var(--surface);
    border-radius: 0.2rem;
}

.example-card__label,
.callout__title {
    margin-bottom: 0.65rem !important;
    color: var(--accent) !important;
    font-family: var(--sans);
    font-size: 0.67rem;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
}

.example-card p:last-child,
.callout p:last-child {
    margin-bottom: 0;
}

.callout {
    border-left: 2px solid var(--accent);
    border-radius: 0;
}

.table-wrap {
    margin: 2.2rem 0;
    overflow-x: auto;
    border-block: 1px solid var(--line);
}

table {
    width: 100%;
    min-width: 34rem;
    border-collapse: collapse;
    font-family: var(--sans);
    font-size: 0.82rem;
    line-height: 1.5;
}

th,
td {
    padding: 0.75rem 0.65rem;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

tbody tr:last-child td {
    border-bottom: 0;
}

th {
    color: var(--muted);
    background: var(--surface);
    font-size: 0.68rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

pre {
    margin: 2.2rem 0;
    padding: 1.25rem;
    overflow-x: auto;
    color: #f4f2ed;
    background: #2b2b29;
    border-radius: 0.2rem;
    font: 0.8rem/1.7 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.check-list {
    list-style: none;
    padding-left: 0 !important;
}

.check-list li {
    position: relative;
    padding: 0.6rem 0 0.6rem 1.65rem;
    border-bottom: 1px solid var(--line);
}

.check-list li::before {
    position: absolute;
    top: 0.65rem;
    left: 0;
    content: '✓';
    color: var(--accent);
    font-family: var(--sans);
    font-size: 0.8rem;
    font-weight: 700;
}

.failure-list {
    display: grid;
    margin: 1.5rem 0 2.5rem;
    border-top: 1px solid var(--line);
}

.failure-list div {
    padding: 1rem 0;
    border-bottom: 1px solid var(--line);
}

.failure-list dt {
    margin-bottom: 0.3rem;
    color: var(--ink);
    font-weight: 700;
}

.failure-list dd {
    margin: 0;
}

.article-end {
    margin-top: clamp(4.5rem, 9vw, 7rem);
    padding-top: 2rem;
    border-top: 1px solid var(--line);
}

.article-end > p:not(.eyebrow) {
    max-width: 26ch;
    color: var(--ink);
    font-size: clamp(1.45rem, 4vw, 2rem);
    line-height: 1.35;
}

.button-link {
    display: inline-flex;
    min-height: 2.6rem;
    align-items: center;
    justify-content: center;
    padding: 0.55rem 0.9rem;
    color: var(--white);
    background: var(--accent);
    border-radius: 0.15rem;
    font-family: var(--sans);
    font-size: 0.76rem;
    font-weight: 700;
    text-decoration: none;
}

.button-link:hover {
    background: var(--ink);
}

.error-page {
    width: min(100%, var(--content));
    min-height: calc(100vh - 12rem);
    margin-inline: auto;
    padding: clamp(4rem, 12vw, 8rem) var(--gutter);
}

.error-page h1 {
    margin: 0;
    font-family: var(--serif);
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 500;
    line-height: 1.05;
    letter-spacing: -0.04em;
}

.error-page > p:not(.eyebrow) {
    margin: 1.4rem 0;
    color: var(--muted);
}

@media (min-width: 42rem) {
    .site-footer {
        flex-direction: row;
        justify-content: space-between;
    }

    .article-entry {
        grid-template-columns: minmax(0, 1fr) 12rem;
        align-items: center;
    }

    .article-entry--text {
        grid-template-columns: 2rem minmax(0, 1fr);
    }

    .article-entry--text .article-entry__number {
        display: block;
        color: var(--muted);
        font-size: 0.68rem;
    }


    .article-entry__figure {
        grid-column: 2;
        grid-row: 1;
    }

    .process {
        grid-template-columns: repeat(5, 1fr);
    }

    .process div {
        grid-template-columns: 1fr;
        padding-inline: 0.65rem;
        border-right: 1px solid var(--line);
        border-bottom: 0;
    }

    .process div:last-child {
        border-right: 0;
    }

    .failure-list div {
        display: grid;
        grid-template-columns: 11rem 1fr;
        gap: 1.5rem;
    }

    body.article-page .article-body {
        padding-inline-end: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .article-entry__figure img {
        transition: none;
    }

    .section-scrubber,
    .section-scrubber__dot,
    .section-scrubber__bubble {
        transition: none;
    }
}

/* Minecraft 生物科普图谱 */

.atlas-page-body {
    --atlas-paper: #f1e3c6;
    --atlas-ink: #241c16;
    --atlas-night: #10253f;
    --atlas-red: #9e3024;
    color: var(--atlas-ink);
    background:
        radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.7), transparent 34rem),
        #e8dfcf;
}

.atlas-page-body .site-header,
.atlas-page-body .site-footer {
    width: min(100%, 76rem);
}

.atlas-page-body .site-header {
    min-height: 4rem;
}

.atlas-page-body .site-footer {
    margin-top: 2rem;
}

.atlas-main {
    width: min(100%, 76rem);
    margin-inline: auto;
    padding: 0 var(--gutter) 2rem;
}

.atlas-reader {
    scroll-margin-top: 0.5rem;
}

.atlas-reader__enhanced {
    display: none !important;
}

.atlas-reader.is-ready .atlas-reader__enhanced {
    display: inline-flex !important;
}

.atlas-reader.is-ready .atlas-controls {
    display: grid !important;
}

.atlas-reader.is-ready .atlas-cover__fallback-toc {
    display: none;
}

.atlas-masthead {
    display: flex;
    min-height: 3.25rem;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.atlas-back-link {
    margin: 0;
    font-size: 0.74rem;
}

.atlas-masthead__actions {
    gap: 0.35rem;
}

.atlas-text-button,
.atlas-primary-button,
.atlas-control-button,
.atlas-position,
.atlas-dialog__close,
.atlas-toc-card {
    color: inherit;
    border: 0;
    font: inherit;
    cursor: pointer;
}

.atlas-text-button {
    min-height: 2.5rem;
    padding: 0.45rem 0.75rem;
    color: #5e554a;
    background: transparent;
    border-radius: 999px;
    font-size: 0.76rem;
    font-weight: 700;
}

.atlas-text-button:hover {
    color: var(--atlas-ink);
    background: rgba(255, 255, 255, 0.52);
}

.atlas-stage {
    touch-action: pan-y pinch-zoom;
}

.atlas-page {
    width: min(100%, 64rem);
    margin: 0 auto 3rem;
}

.atlas-reader.is-ready .atlas-page {
    margin-bottom: 0;
}

.atlas-reader.is-ready .atlas-page[hidden] {
    display: none;
}

.atlas-cover {
    position: relative;
    display: grid;
    min-height: min(76rem, calc(100svh - 8.5rem));
    overflow: hidden;
    place-items: center;
    color: #fff8e9;
    background:
        linear-gradient(180deg, rgba(8, 22, 40, 0.05), rgba(8, 22, 40, 0.92)),
        linear-gradient(135deg, #173b5f, #0e2239 65%, #071827);
    border: 1px solid rgba(57, 42, 26, 0.34);
    border-radius: 0.35rem;
    box-shadow: 0 1.5rem 4rem rgba(54, 39, 22, 0.2);
    isolation: isolate;
}

.atlas-cover::before {
    position: absolute;
    inset: 0.65rem;
    z-index: -1;
    content: '';
    border: 1px solid rgba(242, 224, 186, 0.28);
    pointer-events: none;
}

.atlas-cover__night,
.atlas-cover__landscape {
    position: absolute;
    inset: 0;
    z-index: -1;
    pointer-events: none;
}

.atlas-cover__moon {
    position: absolute;
    top: 9%;
    right: 10%;
    width: clamp(4.5rem, 14vw, 8rem);
    aspect-ratio: 1;
    background:
        linear-gradient(90deg, transparent 12%, rgba(145, 165, 179, 0.42) 12% 26%, transparent 26% 68%, rgba(145, 165, 179, 0.34) 68% 83%, transparent 83%),
        #eaf2e9;
    box-shadow: 0 0 2.5rem rgba(226, 239, 225, 0.32);
}

.atlas-cover__star {
    position: absolute;
    width: 0.28rem;
    aspect-ratio: 1;
    background: #f9efd5;
    box-shadow: 0 0 0.6rem rgba(249, 239, 213, 0.72);
}

.atlas-cover__star--one {
    top: 17%;
    left: 12%;
}

.atlas-cover__star--two {
    top: 27%;
    left: 78%;
}

.atlas-cover__star--three {
    top: 10%;
    left: 42%;
}

.atlas-cover__content {
    width: min(100%, 42rem);
    padding: clamp(4rem, 12vw, 8rem) clamp(1.5rem, 8vw, 5rem);
    text-align: center;
}

.atlas-cover__eyebrow,
.atlas-cover__meta {
    margin: 0;
    color: #d8c9a7;
    font-size: clamp(0.7rem, 2vw, 0.84rem);
    font-weight: 700;
    letter-spacing: 0.12em;
}

.atlas-cover h1 {
    margin: clamp(1.3rem, 4vw, 2rem) 0 0;
    font-family: var(--cjk-serif);
    font-size: clamp(3rem, 11vw, 6.8rem);
    font-weight: 700;
    line-height: 1.04;
    letter-spacing: -0.055em;
    text-shadow: 0 0.18rem 0 rgba(0, 0, 0, 0.2);
}

.atlas-cover__dek {
    max-width: 29rem;
    margin: 1.6rem auto 0;
    color: #efe4cb;
    font-family: var(--cjk-serif);
    font-size: clamp(1rem, 3vw, 1.28rem);
    line-height: 1.75;
}

.atlas-cover__meta {
    margin-top: 1.25rem;
    letter-spacing: 0.05em;
}

.atlas-primary-button {
    min-height: 3rem;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    margin: 2rem auto 0;
    padding: 0.7rem 1.25rem;
    color: var(--atlas-ink);
    background: #eee0bd;
    border-radius: 999px;
    font-size: 0.84rem;
    font-weight: 800;
}

.atlas-primary-button:hover {
    background: #fff4d7;
}

.atlas-cover__fallback-toc {
    max-width: 30rem;
    margin: 2.5rem auto 0;
    padding-top: 1.25rem;
    border-top: 1px solid rgba(239, 228, 203, 0.25);
    text-align: left;
}

.atlas-cover__fallback-toc p {
    margin: 0 0 0.7rem;
    color: #d8c9a7;
    font-weight: 700;
}

.atlas-cover__fallback-toc ol {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.35rem 1rem;
    margin: 0;
    padding: 0;
    font-size: 0.78rem;
    list-style: none;
}

.atlas-cover__fallback-toc a {
    color: #efe4cb;
}

.atlas-cover__landscape {
    top: auto;
    height: 21%;
    opacity: 0.52;
}

.atlas-cover__landscape span {
    position: absolute;
    bottom: 0;
    width: 25%;
    background: #1d3a2b;
    clip-path: polygon(0 35%, 25% 35%, 25% 15%, 50% 15%, 50% 40%, 75% 40%, 75% 22%, 100% 22%, 100% 100%, 0 100%);
}

.atlas-cover__landscape span:nth-child(1) { left: 0; height: 60%; }
.atlas-cover__landscape span:nth-child(2) { left: 20%; height: 82%; }
.atlas-cover__landscape span:nth-child(3) { left: 40%; height: 54%; }
.atlas-cover__landscape span:nth-child(4) { left: 60%; height: 90%; }
.atlas-cover__landscape span:nth-child(5) { left: 80%; height: 66%; }

.atlas-plate {
    padding: clamp(0.7rem, 2vw, 1.25rem);
    background: rgba(251, 247, 238, 0.82);
    border: 1px solid rgba(87, 66, 44, 0.16);
    border-radius: 0.35rem;
    box-shadow: 0 1.5rem 4rem rgba(54, 39, 22, 0.13);
}

.atlas-plate__header {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 1.5rem;
    padding: 0.2rem 0.25rem 0.85rem;
}

.atlas-plate__header p,
.atlas-plate__header h2,
.atlas-plate__header > span {
    margin: 0;
}

.atlas-plate__header p {
    color: var(--atlas-red);
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.1em;
}

.atlas-plate__header h2 {
    font-family: var(--cjk-serif);
    font-size: clamp(1.45rem, 4vw, 2rem);
    line-height: 1.15;
}

.atlas-plate__header > span {
    max-width: 28rem;
    color: #6a5c4c;
    font-size: 0.78rem;
    line-height: 1.55;
    text-align: right;
}

.atlas-plate__image {
    position: relative;
    display: block;
    width: fit-content;
    max-width: 100%;
    margin-inline: auto;
    overflow: hidden;
    border-radius: 0.15rem;
    cursor: zoom-in;
}

.atlas-plate__image img {
    width: auto;
    max-width: 100%;
    max-height: 75svh;
    aspect-ratio: 2 / 3;
    object-fit: contain;
    box-shadow: 0 0.5rem 1.5rem rgba(44, 31, 18, 0.12);
}

.atlas-plate__zoom-hint {
    position: absolute;
    right: 0.65rem;
    bottom: 0.65rem;
    align-items: center;
    min-height: 2.25rem;
    padding: 0.4rem 0.7rem;
    color: #fff;
    background: rgba(27, 24, 21, 0.76);
    border-radius: 999px;
    font-size: 0.68rem;
    font-weight: 700;
    opacity: 0;
    transition: opacity 160ms ease;
}

.atlas-plate__image:hover .atlas-plate__zoom-hint,
.atlas-plate__image:focus-visible .atlas-plate__zoom-hint {
    opacity: 1;
}

.atlas-controls {
    position: sticky;
    bottom: max(0.65rem, env(safe-area-inset-bottom));
    z-index: 30;
    grid-template-columns: minmax(5.5rem, 1fr) minmax(8rem, 1.2fr) minmax(5.5rem, 1fr);
    width: min(100%, 34rem);
    margin: 1rem auto 0;
    padding: 0.35rem;
    background: rgba(255, 252, 245, 0.94);
    border: 1px solid rgba(79, 61, 42, 0.18);
    border-radius: 999px;
    box-shadow: 0 0.8rem 2.5rem rgba(50, 36, 21, 0.18);
    backdrop-filter: blur(14px);
}

.atlas-control-button,
.atlas-position {
    min-height: 3rem;
    border-radius: 999px;
}

.atlas-control-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.42rem;
    padding: 0.55rem 0.75rem;
    background: transparent;
    font-size: 0.74rem;
    font-weight: 800;
}

.atlas-control-button:not(:disabled):hover,
.atlas-position:hover {
    background: #eee4d3;
}

.atlas-control-button:disabled {
    cursor: default;
    opacity: 0.28;
}

.atlas-position {
    display: flex;
    min-width: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0.4rem 0.6rem;
    background: transparent;
}

.atlas-position strong,
.atlas-position span {
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.atlas-position strong {
    font-size: 0.76rem;
}

.atlas-position span {
    color: #73685c;
    font-size: 0.64rem;
}

.atlas-reader__note {
    margin: 1.35rem 0 0;
    color: #73685c;
    font-size: 0.68rem;
    text-align: center;
}

.atlas-dialog {
    width: min(calc(100% - 1.5rem), 68rem);
    max-height: min(90svh, 58rem);
    padding: 0;
    color: var(--atlas-ink);
    background: #f7f0e3;
    border: 1px solid rgba(62, 46, 30, 0.28);
    border-radius: 0.45rem;
    box-shadow: 0 2rem 6rem rgba(10, 9, 8, 0.4);
}

.atlas-dialog::backdrop {
    background: rgba(12, 16, 21, 0.74);
    backdrop-filter: blur(5px);
}

.atlas-dialog.is-fallback-open {
    position: fixed;
    inset: 5vh auto auto 50%;
    z-index: 100;
    transform: translateX(-50%);
}

.atlas-dialog__header {
    position: sticky;
    top: 0;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.1rem;
    background: rgba(247, 240, 227, 0.96);
    border-bottom: 1px solid rgba(77, 58, 38, 0.16);
    backdrop-filter: blur(12px);
}

.atlas-dialog__header p,
.atlas-dialog__header h2 {
    margin: 0;
}

.atlas-dialog__header p {
    color: var(--atlas-red);
    font-size: 0.66rem;
    font-weight: 800;
    letter-spacing: 0.1em;
}

.atlas-dialog__header h2 {
    font-family: var(--cjk-serif);
    font-size: clamp(1.15rem, 4vw, 1.6rem);
}

.atlas-dialog__close {
    width: 2.75rem;
    height: 2.75rem;
    flex: 0 0 auto;
    background: #e8ddca;
    border-radius: 50%;
    font-size: 1.5rem;
    line-height: 1;
}

.atlas-dialog__close:hover {
    color: #fff;
    background: var(--atlas-red);
}

.atlas-toc-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
    padding: 1rem;
    overflow-y: auto;
}

.atlas-toc-card {
    display: grid;
    grid-template-columns: 4.3rem minmax(0, 1fr);
    align-items: center;
    gap: 0.75rem;
    padding: 0.55rem;
    background: #fffaf0;
    border: 1px solid transparent;
    border-radius: 0.3rem;
    text-align: left;
}

.atlas-toc-card:hover,
.atlas-toc-card.is-current {
    border-color: color-mix(in srgb, var(--atlas-red) 45%, transparent);
    background: #fffdf8;
}

.atlas-toc-card.is-current {
    box-shadow: inset 3px 0 0 var(--atlas-red);
}

.atlas-toc-card img {
    width: 4.3rem;
    aspect-ratio: 2 / 3;
    object-fit: cover;
    border-radius: 0.12rem;
}

.atlas-toc-card span {
    min-width: 0;
    font-family: var(--cjk-serif);
    font-size: 0.95rem;
    font-weight: 700;
}

.atlas-toc-card small {
    display: block;
    margin-bottom: 0.2rem;
    color: var(--atlas-red);
    font-family: var(--sans);
    font-size: 0.62rem;
    letter-spacing: 0.08em;
}

.atlas-zoom-dialog {
    width: calc(100% - 1rem);
    max-width: 76rem;
    height: calc(100svh - 1rem);
    max-height: none;
    background: #171614;
}

.atlas-zoom-dialog__header {
    color: #fff;
    background: rgba(23, 22, 20, 0.94);
    border-bottom-color: rgba(255, 255, 255, 0.12);
}

.atlas-zoom-dialog__header .atlas-dialog__close {
    color: #fff;
    background: rgba(255, 255, 255, 0.12);
}

.atlas-zoom-dialog__viewport {
    height: calc(100% - 4.8rem);
    padding: 1rem;
    overflow: auto;
    overscroll-behavior: contain;
}

.atlas-zoom-dialog__viewport img {
    width: 1024px;
    max-width: none;
    margin: 0 auto;
}

@media (max-width: 41.99rem) {
    .atlas-main {
        padding-inline: 0.7rem;
    }

    .atlas-masthead {
        padding-inline: 0.2rem;
    }

    .atlas-cover {
        min-height: calc(100svh - 8rem);
    }

    .atlas-plate__header {
        align-items: start;
        flex-direction: column;
        gap: 0.35rem;
    }

    .atlas-plate__header > span {
        text-align: left;
    }

    .atlas-plate__image,
    .atlas-plate__image img {
        width: 100%;
        max-height: none;
    }

    .atlas-control-button span:not([aria-hidden='true']) {
        display: none;
    }

    .atlas-controls {
        grid-template-columns: 3.1rem minmax(0, 1fr) 3.1rem;
        width: min(100%, 22rem);
    }

    .atlas-toc-grid {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 42rem) {
    .atlas-toc-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (min-width: 68rem) {
    .atlas-toc-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

@media (prefers-reduced-motion: reduce) {
    .atlas-plate__zoom-hint {
        transition: none;
    }
}

/* Minecraft 生物科普图谱：连续阅读版 */

.atlas-continuous-page {
    --accent: #315f49;
    background:
        radial-gradient(circle at 50% 0%, rgba(244, 232, 204, 0.48), transparent 36rem),
        var(--page);
}

.atlas-continuous-hero {
    max-width: 48rem;
}

.atlas-continuous-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.7rem 1rem;
    margin-top: 1.75rem;
}

.atlas-print-button {
    border: 0;
    cursor: pointer;
}

.atlas-continuous-actions .text-link,
.atlas-continuous-end .text-link {
    padding: 0;
    background: transparent;
    font-family: var(--sans);
}

.atlas-continuous-layout {
    padding-top: 1.5rem;
}

.atlas-continuous-body {
    width: min(100%, 48rem);
    font-family: var(--cjk-serif);
}

.atlas-continuous-section {
    margin: 0 0 clamp(4rem, 10vw, 7rem);
    padding-top: 2rem !important;
    border-top: 1px solid var(--line);
    scroll-margin-top: 1rem;
}

.atlas-continuous-section__header {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 0.35rem;
    margin-bottom: 1.25rem;
    font-family: var(--sans);
}

.atlas-continuous-section__header p,
.atlas-continuous-section__header h2,
.atlas-continuous-section__header span {
    margin: 0;
}

.atlas-continuous-section__header p {
    color: var(--accent);
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.article-body .atlas-continuous-section__header h2 {
    font-family: var(--cjk-serif);
    font-size: clamp(1.65rem, 5vw, 2.35rem);
    font-weight: 700;
    letter-spacing: -0.025em;
}

.atlas-continuous-section__header span {
    color: var(--muted);
    font-size: 0.82rem;
    line-height: 1.6;
}

.atlas-continuous-figure {
    margin: 0;
    background: #eadfc9;
    border: 1px solid color-mix(in srgb, var(--line) 72%, #9d794f);
    border-radius: 0.35rem;
    box-shadow: 0 1.4rem 3rem rgba(45, 35, 24, 0.09);
    overflow: hidden;
}

.atlas-continuous-figure a {
    display: block;
}

.atlas-continuous-figure img {
    width: 100%;
    aspect-ratio: 2 / 3;
    object-fit: contain;
}

.atlas-continuous-figure figcaption {
    padding: 0.65rem 0.85rem;
    color: #62594d;
    background: #f4ecdc;
    font-family: var(--sans);
    font-size: 0.68rem;
    letter-spacing: 0.04em;
}

.atlas-continuous-end {
    margin-bottom: 2rem;
}

@media (min-width: 68rem) {
    .atlas-continuous-book {
        width: min(100%, 78rem);
    }

    .atlas-continuous-layout {
        grid-template-columns: minmax(0, 48rem) minmax(14rem, 18rem);
        align-items: start;
        justify-content: center;
        gap: 3rem;
    }

    .atlas-continuous-layout > .article-toc {
        position: sticky;
        top: 2rem;
        grid-column: 2;
        grid-row: 1;
        width: 100%;
        max-height: calc(100vh - 4rem);
    }

    .atlas-continuous-layout > .article-toc .article-toc__list {
        max-height: calc(100vh - 7.5rem);
    }

    .atlas-continuous-body {
        grid-column: 1;
        grid-row: 1;
    }
}

@media print {
    @page {
        size: A4 portrait;
        margin: 12mm;
    }

    html,
    body,
    .atlas-continuous-page {
        color: #000;
        background: #fff !important;
    }

    .reading-progress,
    .site-header,
    .site-footer,
    .atlas-continuous-actions,
    .atlas-continuous-layout > .article-toc,
    .section-scrubber,
    .atlas-continuous-section__header,
    .atlas-continuous-figure figcaption,
    .atlas-continuous-end {
        display: none !important;
    }

    .article,
    .atlas-continuous-book,
    .atlas-continuous-body,
    .atlas-continuous-layout {
        display: block;
        width: 100%;
        max-width: none;
        margin: 0;
        padding: 0;
    }

    .atlas-continuous-hero {
        display: flex;
        min-height: 273mm;
        max-width: none;
        flex-direction: column;
        justify-content: center;
        padding: 0;
        break-after: page;
    }

    .atlas-continuous-hero .back-link {
        display: none;
    }

    .atlas-continuous-section {
        display: flex;
        width: 100%;
        height: 273mm;
        margin: 0;
        padding: 0 !important;
        align-items: center;
        justify-content: center;
        border: 0;
        break-after: page;
        break-inside: avoid;
        page-break-after: always;
    }

    .atlas-continuous-section:last-of-type {
        break-after: auto;
        page-break-after: auto;
    }

    .atlas-continuous-figure {
        width: 100%;
        height: 100%;
        background: transparent;
        border: 0;
        border-radius: 0;
        box-shadow: none;
    }

    .atlas-continuous-figure a {
        display: flex;
        width: 100%;
        height: 100%;
        align-items: center;
        justify-content: center;
    }

    .atlas-continuous-figure img {
        width: auto;
        max-width: 100%;
        height: 100%;
        max-height: 273mm;
        object-fit: contain;
    }
}