主页
:root {
    --accent-color: 52, 180, 88;
    --background-image: url("https://images.unsplash.com/photo-1518173946687-a4c8892bbd9f");
 
    --background-color: 246, 246, 246;
    --text-color: 51, 51, 51;
    --light-color-1: 252, 252, 252;
    --light-color-2: var(--light-color-1);
    --dark-color-1: var(--accent-color);
    --dark-color-2: var(--accent-color);
    --dark-color-3: var(--accent-color);
    --dark-color-4: var(--accent-color);
 
    --link-color: var(--accent-color);
    --hover-link-color: var(--link-color), 0.7;
    --visited-link-color: var(--link-color);
 
    --selected-background-color: var(--accent-color), 0.2;
    --selected-text-color: ;
 
    --general-blur: 0;
 
    --general-button-text-color: var(--general-light-text-color);
    --general-button-background-color: var(--general-light-background-color);
    --general-hover-button-text-color: var(--accent-color);
    --general-hover-button-background-color: var(--general-button-background-color);
 
    --main-header-height: 8.5rem;
    --main-header-height-on-mobile: 8.5rem;
    --header-width: 66rem;
    --header-margin: max(calc((100% - var(--header-width)) / 2), 1rem);
    --logo-image: none;
    --header-title-font-size: 3.5rem;
    --header-title-font-size-on-mobile: 2.15rem;
    --header-subtitle-font-size: 1.35rem;
    --header-subtitle-font-size-on-mobile: 0.8rem;
    --search-icon-width-on-mobile: 1rem;
 
    --header-background-image: none;
    --header-extra-background-image: none;
 
    --topbar-height-on-mobile: var(--topbar-height);
    --topbar-font-size-on-mobile: var(--topbar-font-size);
 
    --topbar-text-color: var(--general-light-text-color);
    --topbar-hover-text-color: var(--accent-color);
    --topbar-background-color: var(--general-light-background-color);
    --topbar-hover-background-color: 0, 0, 0, 0;
    --topbar-hover-border-color: 0, 0, 0, 0;
    --topbar-drop-text-color: var(--topbar-text-color);
    --topbar-drop-hover-text-color: var(--topbar-hover-text-color);
    --topbar-drop-background-color: var(--topbar-background-color);
    --topbar-drop-hover-background-color: 0, 0, 0, 0;
    --topbar-drop-shadow-color: var(--general-shadow-color), 0.06;
 
    --header-username-color: var(--header-text-color);
    --account-button-text-color: var(--header-text-color);
    --account-button-hover-text-color: var(--accent-color);
    --account-button-background-color: 0, 0, 0, 0;
    --account-button-hover-background-color: 0, 0, 0, 0;
    --account-drop-hover-text-color: var(--accent-color);
    --account-drop-hover-background-color: 0, 0, 0, 0;
 
    --body-width: 66rem;
 
    --page-tag-border-color: var(--general-strong-border-color);
    --page-tag-title-color: var(--text-color);
    --page-tag-text-color: var(--text-color);
    --page-tag-hover-text-color: var(--accent-color);
    --page-tag-background-color: 0, 0, 0, 0;
    --page-tag-hover-background-color: 0, 0, 0, 0;
 
    --footer-background-color: 0, 0, 0, 0;
    --license-background-color: 0, 0, 0, 0;
    --footer-text-color: var(--text-color), 0.5;
    --license-text-color: var(--footer-text-color);
 
    --sidebar-media-background-color: 0, 0, 0, 0;
    --sidebar-title-background-color: var(--general-dark-background-color);
    --sidebar-hover-background-color: var(--general-medium-border-color);
 
    --edit-area-background-color: var(--general-light-background-color);
 
    --hovertip-border-color: var(--general-strong-border-color);
 
    --imageblock-border-color: var(--general-strong-border-color);
 
    --hr-color: var(--general-strong-border-color);
 
    --tabview-border-width: 0.15rem;
    --tabview-horizon-color: 0, 0, 0, 0;
    --tabview-content-background-color: var(--general-light-background-color);
 
    --table-background-color: var(--general-light-background-color);
    --table-text-color: var(--general-light-text-color);
 
    --note-background-color: 255, 255, 136;
    --note-text-color: var(--text-color);
 
    --popup-fader-color: 0, 0, 0, 0.2;
    --popup-tip-color: var(--text-color);
 
    --white-monochrome: var(--light-color-1);
    --thread-accent-color: var(--general-light-background-color);
}
 
body, html {
  -webkit-tap-highlight-color: transparent;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scrollbar-width: thin;
}
::-webkit-scrollbar {
  width: 0.5rem;
  height: 0.5rem;
}
::-webkit-scrollbar-track {
  background: rgba(var(--scrollbar-background-color));
}
::-webkit-scrollbar-thumb {
  background: rgba(var(--scrollbar-color));
}
a:is(:hover, :active, :focus, :focus-within) {
  -webkit-text-decoration: underline 0.1em;
}
#side-bar .menu-item a {
  transition: background var(--general-transition-time-fast);
}
#file-comments {
  padding: 0.2em 0.5em;
}
table.page-files .highlight {
  background: rgba(var(--action-area-border-color))
}
.pager a, .pager .current, .pager .dots {
  transition: background var(--general-transition-time-slow), color var(--general-transition-time-slow);
}
#action-area h1 + p + h2 ~ div[style="padding-left:3em;"] > div {
  align-items: center;
}
#edit-meta-newtag-form > table {
  display: flex;
  align-items: center;
}
#edit-meta-newtag-form > table :is(tbody, tr) {
  display: contents;
}
#edit-meta-newtag-form > table td {
  display: block;
}
#edit-meta-newtag-form > table td:nth-child(2n) {
  flex: 1;
}
#edit-meta-newtag-form > table td input {
  width: 100%;
  box-sizing: border-box;
  border: none;
  background: rgba(var(--edit-area-textarea-background-color));
  color: rgba(var(--edit-area-textarea-text-color));
  padding: 0.2em 0.5em;
  margin: 0;
  outline: none;
  transition: box-shadow var(--general-transition-time-slow);
  font-weight: 500;
}
#edit-meta-newtag-form > table td input:focus-visible {
  box-shadow: 2px 2px 0 rgba(var(--edit-area-textarea-border-color)), -2px 2px 0 rgba(var(--edit-area-textarea-border-color)), -2px -2px 0 rgba(var(--edit-area-textarea-border-color)), 2px -2px 0 rgba(var(--edit-area-textarea-border-color));
}
#edit-meta-newtag-form > div {
  margin: 1rem 0;
  padding: 0 !important;
  display: flex;
  grid-gap: 1rem;
}
hr {
  background: transparent;
}
[class|=colmod-link] {
  margin: 1rem 0;
}
.yui-navset .yui-nav li a,
.yui-navset .yui-nav li.selected a {
  transition: color var(--general-transition-time-slow);
}
.hl-default,
.hl-code,
.hl-brackets,
.hl-identifier {
  color: inherit;
}
#toc #toc-action-bar {
  top: 0.25rem;
}
:where(ol ul, ul ul) {
  list-style-type: circle;
}
.join-box a {
  color: rgba(var(--general-button-text-color));
  background: rgba(var(--general-button-background-color));
}
.join-box a:is(:hover, :active, :focus, :focus-within) {
  color: rgba(var(--general-hover-button-text-color));
  background: rgba(var(--general-hover-button-background-color));
}
.forum-thread-box .description-block {
  padding: 0.5em 1em;
}
.thread-container .post .long {
  padding: 0.5em;
}
#page-content > div.forum-thread-box > div.options,
.post-container > .post > div.long > div.options {
  display: flex;
  justify-content: flex-end;
}
.signature {
  display: none;
}
.notepaper {
  max-width: 100%;
}
.bettercollap .collapsible-block-unfolded-link,
.bettercollap .collapsible-block-folded {
  margin: 0;
}
@media (pointer: coarse) {
  #login-status #account-options:hover,
  #login-status #account-topbutton:hover + #account-options {
    opacity: 1;
    pointer-events: all;
  }
}
 
@keyframes fresh-fade-in {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}
a {
    text-decoration: underline;
    text-decoration-thickness: 0.1em;
    text-decoration-color: transparent;
    transition: color 0.15s, text-decoration-color 0.15s;
}
a:is(:hover, :active, :focus, :focus-within) {
    text-decoration-color: currentColor;
}
#extra-div-1 {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    -webkit-mask-image: linear-gradient(to top, transparent, black 80%);
            mask-image: linear-gradient(to top, transparent, black 80%);
}
#extra-div-1 span {
    display: block;
    width: 100%;
    height: 100%;
    -webkit-mask-image: linear-gradient(to right, transparent, black);
            mask-image: linear-gradient(to right, transparent, black);
    background: var(--background-image);
    background-size: cover;
    background-repeat: no-repeat;
}
#container-wrap {
    position: relative;
    z-index: 1;
}
#header {
    grid-template-areas: "h1" "h1";
    position: relative;
    top: 0;
}
#header h1 a span {
    padding-top: 3rem;
    color: rgba(var(--text-color));
    align-items: flex-start;
    text-shadow: none;
    grid-gap: 0;
}
#top-bar {
    position: absolute;
    bottom: 0;
    right: var(--header-margin);
    width: min(calc(var(--header-width) * 0.45), 45%);
    height: var(--topbar-height);
    padding: 0;
    background: transparent;
    pointer-events: none;
}
#top-bar div[class*=top-bar] > ul {
    grid-gap: 0.5rem;
    justify-content: flex-end;
}
#top-bar div[class*=top-bar] > ul > li {
    pointer-events: auto;
    flex: 0 1 7.5rem;
    position: relative;
}
#top-bar div[class*=top-bar] > ul > li > a,
#top-bar .mobile-top-bar .open-menu a {
    background: rgba(var(--topbar-background-color));
    border-radius: 1rem;
    box-shadow: 0 0.15rem 0.4rem rgba(var(--general-shadow-color), 0.06);
    font-weight: 400;
    transition: color var(--general-transition-time-slow);
}
#top-bar div[class*=top-bar] > ul > li > ul,
#top-bar div[class*=top-bar] > ul > li > ul > li > ul {
    top: 100%;
    border-radius: 1rem;
    box-shadow: 0 0.15rem 0.4rem rgba(var(--topbar-drop-shadow-color));
    border: none;
    flex-direction: column;
    flex-wrap: nowrap;
}
#top-bar div[class*=top-bar] > ul > li > ul > li,
#top-bar div[class*=top-bar] > ul > li > ul > li > ul > li {
    border-radius: 1rem;
    border: none;
    flex-basis: auto;
}
#top-bar div[class*=top-bar] > ul > li > ul > li:nth-child(2n):nth-last-child(2) {
    box-shadow: none;
}
#top-bar div[class*=top-bar] > ul > li > ul > li > a,
#top-bar div[class*=top-bar] > ul > li > ul > li > ul > li > a {
    border-radius: 1rem;
    transition: color var(--general-transition-time-slow);
}
#top-bar div[class*=top-bar] > ul > li > ul > li > ul {
    top: 0;
}
#top-bar .mobile-top-bar {
    padding-bottom: 0.15rem;
}
#top-bar .mobile-top-bar .open-menu {
    display: contents;
}
#top-bar .mobile-top-bar .open-menu a {
    pointer-events: auto;
    position: fixed;
    top: 0.5rem;
    left: 0.5rem;
    width: 3rem;
    height: 3rem;
    border: 0.15rem solid rgba(var(--general-medium-border-color));
    border-radius: 50%;
    box-sizing: border-box;
    transition: border-color var(--general-transition-time-slow);
}
#top-bar .mobile-top-bar .open-menu a::before {
    transition: background var(--general-transition-time-slow);
}
#top-bar .mobile-top-bar .open-menu a:is(:hover, :active, :focus, :focus-within) {
    background: rgba(var(--topbar-background-color));
    border-color: rgba(var(--general-dark-border-color));
}
#login-status,
#search-top-box {
    right: var(--header-margin);
    font-weight: 400;
}
#login-status {
    top: 1rem;
}
a#account-topbutton,
#search-top-box-form .button {
    transition: color var(--general-transition-time-slow);
}
#account-options {
    font-size: 0.8rem;
    border: none;
    border-radius: 0.8rem;
    box-shadow: 0 0.15rem 0.4rem rgba(var(--topbar-drop-shadow-color));
    transition: opacity var(--general-transition-time-fast) ease-in-out;
}
#account-options li a {
    height: 1.6rem;
    border-radius: 0.8rem;
    transition: color var(--general-transition-time-slow);
}
#main-content {
    background: rgba(var(--general-light-background-color), 0.8);
    color: rgba(var(--general-light-text-color));
    margin: 2.5rem var(--body-margin);
    padding: 1rem 3rem;
    border-radius: 1.25rem;
    box-shadow: 0 0.15rem 1rem rgba(var(--general-shadow-color), 0.05);
    box-sizing: border-box;
}
#page-title {
    margin-top: 1rem;
}
.page-tags::before {
    display: none;
}
.page-tags span {
    align-items: center;
    padding: 0.4rem;
    box-sizing: border-box;
}
.page-tags span::before {
    content: "标签:";
}
.page-tags span a {
    border: calc(1rem / 15) solid rgba(var(--general-medium-border-color));
    border-radius: 1em;
    padding: 0.1rem 0.6rem;
    transition: color var(--general-transition-time-fast), border-color var(--general-transition-time-fast);
}
.page-tags span a:is(:hover, :active, :focus, :focus-within) {
    border-color: rgba(var(--general-dark-border-color));
}
#page-options-container {
    margin: 0;
}
.page-watch-options {
    padding-bottom: 0.5rem;
}
div[id*=page-options-bottom] {
    grid-gap: 0;
    margin: 0;
}
div[id*=page-options-bottom] > a {
    height: 2.25rem;
    padding: 0 0.7rem;
}
#footer {
    padding: 0 1rem;
    text-align: center;
}
#license-area {
    padding: 0.5em 1rem 2.5rem;
    font-size: 0.8rem;
}
#side-bar {
    border: none;
}
#side-bar .heading,
#side-bar .collapsible-block-unfolded-link a,
#side-bar .collapsible-block-folded a {
    text-shadow: none;
}
div[id*=page-options-bottom] > a,
.edit-help-34 a,
.change-textarea-size a,
div.buttons input,
input.button,
button,
file,
a.button,
#edit-page-form div.buttons input,
a.action-area-close,
#view-diff-div > p > a,
#upload-userfile[type=file]::file-selector-button,
table.page-history tr td:nth-child(4) a,
.page-options-bottom a,
.owindow .button-bar > a:not([onclick*=cleanAll]),
.owindow div[style*=margin-top] a {
    border-bottom: 0.15rem solid rgba(var(--general-medium-border-color));
    transition: color var(--general-transition-time-fast);
}
#side-bar,
.preview-message,
.page-source,
.scp-image-block,
.yui-navset,
table.wiki-content-table,
blockquote,
.blockquote,
.code,
#toc,
.footnotes-footer,
.bibitems,
.owindow,
div.modalbox,
div.infobox,
div.rate-box-with-credit-button,
div.page-rate-widget-box,
div.creditButtonStandalone,
.lightblock,
.darkblock,
.styled-quote,
.dark-styled-quote {
    box-shadow: 0 0.15rem 0.8rem rgba(var(--general-shadow-color), 0.06);
}
.page-source,
.hovertip,
.scp-image-block,
blockquote,
.blockquote,
.code,
#toc,
.footnotes-footer,
.bibitems,
.owindow,
div.modalbox,
div.infobox,
.lightblock,
.darkblock,
.styled-quote,
.dark-styled-quote {
    border-radius: 0.25rem;
}
#upload-userfile[type=file]::file-selector-button,
.scp-image-block,
div.wiki-note,
.owindow,
div.modalbox,
div.infobox {
    border: none;
}
#action-area,
#view-diff-div:not(:empty),
.preview-message,
#who-rated-page-area:not(:empty),
#history-subarea,
#file-action-area:not(:empty),
#st-action-area:not(:empty),
#edit-meta-newtag,
#rename-backlinks-box {
    animation: fresh-fade-in var(--general-transition-time-fast) ease-in-out;
}
input.text, textarea, #upload-userfile[type=file] {
    box-shadow: 0 0 0 calc(1rem / 15) rgba(var(--general-medium-border-color));
}
#edit-page-form, #new-post-form {
    padding: 0;
}
:is(#wd-editor-toolbar-panel, #np-editor-panel) a::before {
    transition: background var(--general-transition-time-fast);
}
:is(#wd-editor-toolbar-panel, #np-editor-panel) div > ul > li > ul {
    left: auto;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--general-transition-time-fast) ease-in-out;
}
:is(#wd-editor-toolbar-panel, #np-editor-panel) div > ul > li:hover > ul {
    border: none;
    opacity: 1;
    pointer-events: auto;
}
:is(#wd-editor-toolbar-panel, #np-editor-panel) div > ul > li > ul > li > a {
    border-bottom: calc(1rem / 15) solid rgba(var(--general-strong-border-color));
}
#upload-userfile[type=file]::file-selector-button {
    border-right: calc(1rem / 15) solid rgba(var(--general-medium-border-color));
}
.pager {
    border-bottom: var(--tabview-border-width) solid rgba(var(--tabview-border-color));
}
.pager a, .pager .current, .pager .dots {
    color: rgba(var(--tabview-button-text-color));
    background: rgba(var(--tabview-button-background-color));
}
.pager a:is(:hover, :active, :focus, :focus-within) {
    color: rgba(var(--tabview-hover-button-text-color));
    background: rgba(var(--tabview-hover-button-background-color));
}
.pager .current {
    color: rgba(var(--tabview-selected-button-text-color));
    background: rgba(var(--tabview-selected-button-background-color));
}
#st-action-area > a {
    color: rgba(var(--link-color));
    text-decoration: none;
}
#action-area h1 + p + h2 ~ div[style="padding-left:3em;"] > div a {
    transition: color var(--general-transition-time-fast);
}
.hovertip {
    animation: fresh-fade-in var(--general-transition-time-fast) ease-in-out;
    font-weight: 400;
    border-width: 0 0 0.15rem 0 !important;
}
.scp-image-block img {
    border-radius: 0.25rem 0.25rem 0 0;
}
.scp-image-caption {
    border-bottom: var(--imageblock-border-width) solid rgba(var(--imageblock-border-color));
    border-radius: 0 0 0.25rem 0.25rem;
}
.yui-navset {
    width: auto;
    margin: 1rem 0;
}
.yui-navset .yui-nav li,
.yui-navset .yui-nav li.selected {
    box-shadow: none;
    border-bottom: var(--tabview-border-width) solid rgba(var(--tabview-border-color));
}
.yui-navset .yui-nav li a em,
.yui-navset .yui-nav li.selected a em {
    padding: 0.4em 0.6em;
}
.yui-navset .yui-content {
    box-shadow: none;
    border-bottom: var(--tabview-border-width) solid rgba(var(--general-medium-border-color));
}
div.wiki-note {
    padding: 0.5rem 1rem;
    font-weight: inherit;
    box-shadow: 0 0.5rem 1rem rgba(var(--general-shadow-color), 0.06);
    background-image: linear-gradient(transparent, rgba(255, 255, 255, 0.2));
}
#odialog-container, .owindow.osuccess {
    animation: fresh-fade-in var(--general-transition-time-fast) ease-in-out;
}
.owindow.owait .content,
.owindow.owait .content:before,
.owindow.owait .content:after {
    border-radius: 0.1rem;
}
.owindow .title,
div.modalbox > div:first-child,
div.infobox-title {
    border-radius: 0.25rem 0.25rem 0 0;
}
.owindow .button-bar > a[onclick*=cleanAll],
div.modalbox::after,
div.infobox::after {
    font-weight: 500;
}
.owindow .content > img + h1 + table,
.owindow .content > img + h1 + table td,
div.creditBottomRate {
    border-color: rgba(var(--general-medium-border-color));
}
div.creditBottomRate div.page-rate-widget-box {
    box-shadow: none;
}
.bblock:is(:hover, :focus-within) {
    color: rgb(var(--general-light-background-color));
}
.keycap {
    box-shadow: 0 0.15em rgba(var(--general-strong-border-color));
}
.licensebox a.collapsible-block-link {
    opacity: 1;
    color: rgba(var(--link-color));
    transition: color 0.15s;
}
.licensebox a.collapsible-block-link:is(:hover, :active, :focus, :focus-within) {
    color: rgba(var(--hover-link-color));
}
.sd-container {
    --sd-border: var(--text-color);
    --sd-symbol: var(--general-dark-text-color);
    --sd-bullets: var(--text-color);
}
#page-content .radius {
    border-radius: 1rem;
}
.hovertip,
#page-content .shadow {
    box-shadow: 0 0.15rem 1rem rgba(var(--general-shadow-color), 0.12);
}
.three-line table.wiki-content-table {
    --table-border-color: var(--general-dark-border-color);
    --table-header-background-color: var(--table-background-color);
    --table-header-text-color: var(--table-text-color);
    border: rgba(var(--table-border-color)) 0.2rem solid;
    border-left: none;
    border-right: none;
}
.three-line table.wiki-content-table :is(th, td) {
    padding: 0.5em 0.75em;
    border-left: none;
    border-right: none;
}
@media only screen and (max-width: 1024px) {
    #login-status {
        right: calc(var(--header-margin) + 0.5rem + var(--search-icon-width-on-mobile));
    }
    #search-top-box {
        right: var(--header-margin);
        top: 1.1rem;
        height: var(--search-icon-width-on-mobile);
    }
    #search-top-box-form .button.btn {
        background: currentColor;
        -webkit-mask-size: 100%;
                mask-size: 100%;
        -webkit-mask-position: 0 0;
                mask-position: 0 0;
    }
    #main-content {
        padding: 0.5rem 2rem;
    }
}
@media only screen and (max-width: 540px) {
    #header {
        grid-template-areas: "h1" "topbar";
    }
    #top-bar {
        position: relative;
        right: 0;
        width: 100%;
        padding: 0 var(--header-margin);
    }
    #top-bar div[class*=top-bar] > ul > li {
        position: static;
        flex: auto;
        padding-bottom: 0.15rem;
    }
    #top-bar div[class*=top-bar] > ul > li > ul {
        flex-direction: row;
        flex-wrap: wrap;
    }
    #top-bar div[class*=top-bar] > ul > li > ul > li {
        flex-basis: 40%;
    }
    #main-content {
        padding: 0.01rem 1rem;
    }
}
“假如你在后室里用特殊的方式切出,你可能会来到BR层群。这里是真正的冒险之地,注意安全!”

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欢迎来到The Backrooms BR,祝诸位劳动节快乐!

2026/4/28
目前洛谷分站重新开放

精品原创层级

Level BR-0 - “星河纪元”

by yesiyuanyesiyuan

你被一阵浮空感唤醒,那是太空在闪耀,群星在你眼前闪过。眼前是一片广阔的宇宙,满目皆是浩瀚的黑与闪耀的星,切行困难令人抓狂。你又改变了位置,但那份令你茫然的空虚和孤独依旧,如影随形。
小心点,流浪者们。这地方既是璀璨的太空,也是你们的坟墓。

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