diff --git a/.gitignore b/.gitignore
index a07761a3..e85fd74f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
 
-/key/
+# /key/
 
 include*
\ No newline at end of file
diff --git a/key/style copy.css b/key/style copy.css
new file mode 100644
index 00000000..4825f83d
--- /dev/null
+++ b/key/style copy.css	
@@ -0,0 +1,771 @@
+/* designed by jerry */
+
+:root {
+    color-scheme: light dark;
+    background: white;
+    color: black;
+}
+
+/* all styles */
+/* header style */
+
+body {
+    margin: 0;
+}
+
+#buttercup {
+    position: fixed;
+    top: 0;
+    left: 0;
+    right: 0;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    z-index: 30;
+}
+
+#butter {
+    width: 100vw;
+    height: 0;
+    background-color: #eeeeeec8;
+    backdrop-filter: blur(12px);
+    -webkit-backdrop-filter: blur(12px);
+    -moz-backdrop-filter: blur(12px);
+    position: absolute;
+    top: 0;
+    left: 0;
+    z-index: 0;
+    transition: all 0.4s cubic-bezier(0.075, 0.82, 0.165, 1);
+    overflow-x: hidden;
+    overflow-y: scroll;
+}
+
+#butter.active {
+    height: 100vh;
+}
+
+#butter a {
+    color: unset;
+    text-decoration: none;
+}
+
+#butter a:hover {
+    text-decoration: underline;
+}
+
+#cup {
+    position: absolute;
+    top: 0;
+    left: 0;
+    right: 0;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    transition: all 0.4s cubic-bezier(0.075, 0.82, 0.165, 1);
+}
+
+#cup.active {
+    top: 90vh;
+}
+
+#btcs {
+    position: relative;
+}
+
+.btc-o {
+    height: 50px;
+    background-color: #eee;
+    border-radius: 0 0 10px 10px;
+}
+
+#btc-circles {
+    display: flex;
+    justify-content: center;
+    align-items: center;
+}
+
+#btc-o-1 {
+    width: 217px;
+}
+
+.btc-o::before,
+.btc-o::after,
+.btc-o .btc-circles::before,
+.btc-o .btc-circles::after {
+    content: "";
+    position: absolute;
+    top: 0;
+}
+
+.btc-o::before,
+.btc-o::after {
+    background-image: url(../img/corner_a.svg);
+    background-size: contain;
+    width: 10px;
+    height: 10px;
+    left: -10px;
+    z-index: 1;
+}
+
+.btc-o::after {
+    background-image: url(../img/corner_b.svg);
+    background-size: contain;
+    left: unset;
+    right: -10px;
+}
+
+#cup.active .btc-o::before,
+#cup.active .btc-o::after {
+    background-image: none;
+}
+
+#cup.active .btc-o {
+    background-color: #eee;
+    border-radius: 10px;
+}
+
+.btc {
+    width: 40px;
+    height: 40px;
+    position: absolute;
+    bottom: 5px;
+    left: 5px;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    border-radius: 5px;
+    color: black;
+    animation: app-elements-fade-in 2s cubic-bezier(0.75, 0, 0, 1.05) 0s 1;
+}
+
+#btc-1 {
+    width: 72px;
+    background-image: url(../img/home-button-light.svg);
+    background-size: cover;
+}
+
+#btc-2 {
+    margin-left: 77px;
+}
+
+#btc-3 {
+    margin-left: 122px;
+}
+
+#btc-4 {
+    margin-left: 167px;
+}
+
+.btc:hover {
+    background-color: hsl(0, 0%, 83%);
+}
+
+#doors-wall.active {
+    height: 100vh;
+}
+
+#doors-wall-head {
+    font-family: 'Inter', 'Source Han Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+    font-size: 35px;
+    font-weight: bold;
+    margin-left: 30px;
+    margin-top: 30px;
+}
+
+#doors-wall-grid {
+    font-family: 'Inter', 'Source Han Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+    margin-left: 30px;
+    margin-right: 30px;
+    margin-top: 15px;
+    display: grid;
+    grid-template-columns: 1fr 2fr 3fr;
+    column-gap: 15px;
+}
+
+.d-wall-sec>ul {
+    list-style: none;
+    margin-left: 0;
+    padding-left: 0;
+}
+
+.d-wall-sec>ul>a>li {
+    margin-bottom: 5px;
+    font-size: 18px;
+}
+
+.d-wall-sec-text {
+    font-family: 'Inter', 'Source Han Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+    font-size: 22px;
+}
+
+#d-wall-sec-3>ul {
+    display: grid;
+    grid-template-columns: 2fr 2fr;
+}
+
+#d-wall-mark {
+    font-family: 'Inter', 'Source Han Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+    font-size: 12px;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    white-space: nowrap;
+    padding-bottom: 20px;
+    color: rgba(0, 0, 0, 0.5);
+}
+
+#d-wall-mark-small {
+    font-size: 8px;
+}
+
+/* loader style */
+
+.loader-wrapper {
+    width: 100%;
+    height: 100%;
+    position: fixed;
+    top: 0;
+    left: 0;
+    background-color: #e9e9e9af;
+    backdrop-filter: blur(12px);
+    -webkit-backdrop-filter: blur(12px);
+    -moz-backdrop-filter: blur(12px);
+    display: flex;
+    flex-direction: column;
+    justify-content: center;
+    align-items: center;
+    color: black;
+    font-size: 100px;
+    text-align: center;
+    z-index: 15;
+}
+
+#loader-prompt {
+    font-size: 25px;
+    font-family: 'Inter', 'Source Han Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+}
+
+/* section style */
+
+#content-unit {
+    margin-left: 240px;
+    transition: all 0.2s;
+}
+
+#content-unit.active {
+    margin-left: 0px;
+}
+
+#header-unit {
+    position: fixed;
+    top: 0;
+    left: 0;
+    bottom: 0;
+    width: 240px;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    flex-direction: column;
+    overflow: hidden;
+    background-color: #fff;
+    transition: all 0.2s;
+}
+
+#header-unit.active {
+    width: 0;
+}
+
+#header-unit>div>a,
+#header-unit>div>span>a {
+    color: #000000;
+}
+
+#header-collapse {
+    position: fixed;
+    bottom: 20px;
+    left: 25px;
+    z-index: 2;
+    width: fit-content;
+    height: 30px;
+    border-radius: 10px;
+    border: solid 1px #dddddd;
+    background-color: #fff;
+    font-family: 'Source Han Sans', 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+    font-weight: normal;
+    font-size: 14px;
+    overflow: hidden;
+}
+
+#header-collapse-button {
+    height: 25px;
+    margin: 2.5px;
+    transition: all 0.2s;
+    line-height: 25px;
+    padding-left: 5px;
+    padding-right: 5px;
+    border-radius: 7.5px;
+}
+
+#header-collapse-button:hover {
+    background-color: #cacaca7a;
+}
+
+#header-collapse-button:active {
+    scale: 95%;
+    box-shadow: none;
+}
+
+.header {
+    width: 210px;
+    font-family: 'Inter', 'Source Han Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+    font-size: 18px;
+    line-height: 30px;
+    padding-left: 0px;
+    margin-left: 30px;
+    border-right: solid 1px #cbcbcb;
+}
+
+#quick-links {
+    width: 210px;
+    margin-left: 30px;
+    line-height: 25px;
+    font-family: 'Inter', 'Source Han Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+    padding-top: 10px;
+    border-right: solid 1px #cbcbcb;
+    white-space: wrap;
+}
+
+#quick-links>b {
+    padding: 10px;
+    color: rgba(0, 0, 0, 0.5);
+}
+
+.quick-link {
+    padding: 10px;
+    padding-top: 0;
+    padding-bottom: 0;
+    width: fit-content;
+    display: block;
+}
+
+#quick-link-1 {
+    margin-top: 10px;
+}
+
+#dev-cal-1 {
+    font-family: 'Inter', 'Source Han Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+    font-size: 60px;
+    font-weight: bold;
+    margin-left: 30px;
+    margin-right: 30px;
+    margin-top: 120px;
+}
+
+#dev-cal-1>a {
+    color: #000;
+}
+
+#dev-cal-2 {
+    font-family: 'Inter', 'Source Han Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+    font-size: 15px;
+    z-index: -1;
+    margin-left: 30px;
+    margin-right: 30px;
+}
+
+#update {
+    font-family: 'Inter', 'Source Han Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+    font-weight: 20px;
+    color: rgba(0, 0, 0, 0.401);
+    margin-left: 30px;
+    margin-right: 30px;
+}
+
+/* element style */
+
+#copyright-info {
+    font-family: 'Inter', 'Source Han Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+    font-size: 15px;
+    text-align: right;
+    background-color: #dedede8b;
+    backdrop-filter: blur(12px);
+    -webkit-backdrop-filter: blur(12px);
+    -moz-backdrop-filter: blur(12px);
+    position: relative;
+    overflow: hidden;
+    padding: 10px;
+}
+
+.copyright-info {
+    margin: 10px;
+}
+
+.pages-container {
+    width: auto;
+    margin-top: 30px;
+    margin-right: 30px;
+    border: solid 1px #dddddd;
+    margin-left: 30px;
+    padding: 30px;
+    overflow-x: scroll;
+    overflow-y: hidden;
+    border-radius: 10px;
+}
+
+#glass {
+    width: 300px;
+    position: fixed;
+    right: 0;
+    top: 0;
+    bottom: 0;
+    z-index: 0;
+    background-color: #ffffff;
+    border-left: solid 1px #dddddd;
+    overflow: hidden;
+    display: flex;
+    flex-direction: column;
+    justify-content: center;
+    align-items: center;
+    font-family: 'Source Han Sans', 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+}
+
+#outside-glass {
+    width: auto;
+    margin-right: 300px;
+}
+
+#exhibit-info {
+    padding: 20px;
+    text-align: center;
+}
+
+#en-warn {
+    margin-left: 30px;
+    margin-right: 30px;
+    border-radius: 10px;
+    width: fit-content;
+    height: fit-content;
+    padding: 10px;
+    padding-left: 15px;
+    padding-right: 15px;
+    font-size: 16px;
+    font-weight: bold;
+    font-family: 'Source Han Sans', 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+    border: #dddddd solid 1px;
+    overflow: hidden;
+}
+
+.subtitle {
+    font-weight: bold;
+    font-size: 25px;
+}
+
+nav {
+    background-color: #f3f3f346;
+    padding: 1px;
+    padding-left: 30px;
+    padding-right: 30px;
+    font-family: 'Source Han Sans', 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+}
+
+.crumbs ol {
+    list-style-type: none;
+    padding-left: 0;
+}
+
+.crumb {
+    display: inline-block;
+}
+
+.crumb>a {
+    color: #38383891;
+}
+
+.crumb a::after {
+    display: inline-block;
+    color: #38383891;
+    content: ' / ';
+    font-size: 80%;
+    font-weight: bold;
+    padding: 0 3px;
+}
+
+/* media query */
+
+@media (max-width: 768px) {
+    #door-3 {
+        display: none !important;
+    }
+
+    #header-unit {
+        right: 0;
+        top: 70px;
+        display: unset;
+        width: auto;
+        margin-left: 10px;
+        margin-right: 10px;
+        height: 69px;
+        border-radius: 10px;
+        background-color: rgba(245, 245, 245, 0.5);
+        backdrop-filter: blur(12px);
+        -webkit-backdrop-filter: blur(12px);
+        -moz-backdrop-filter: blur(12px);
+        border: solid 1px #cbcbcb;
+        z-index: 3;
+    }
+
+    #header-collapse {
+        display: none;
+    }
+
+    .header {
+        width: 100%;
+        height: 24px;
+        font-weight: bold;
+        font-size: 15px !important;
+        margin-left: 0 !important;
+    }
+
+    #quick-links {
+        height: 20px;
+        padding: 10px;
+        width: auto;
+        margin-left: 0 !important;
+        margin-right: 0 !important;
+        border-right: none !important;
+        white-space: nowrap;
+        overflow-x: scroll;
+        overflow-y: hidden;
+    }
+
+    #quick-links>b {
+        padding: unset;
+        font-size: 15px;
+    }
+
+    .quick-link {
+        display: inline !important;
+        border-radius: 20px;
+        padding: 5px;
+        padding-left: 10px;
+        padding-right: 10px;
+        border: solid 1px gray;
+        transition: all 0.3s;
+        margin-right: 5px;
+        font-size: 15px;
+    }
+
+    #quick-link-1 {
+        margin-left: 10px;
+    }
+
+    #content-unit {
+        margin-left: 0 !important;
+    }
+
+    #glass {
+        display: none !important;
+    }
+
+    #outside-glass {
+        width: 100vw !important;
+    }
+
+    @media (prefers-color-scheme: dark) {
+        #header-unit {
+            background-color: rgba(42, 42, 42, 0.5) !important;
+            border: solid 1px #707070;
+        }
+    }
+}
+
+@media (max-width: 430px) {
+    #doors-wall-grid {
+        grid-template-columns: 1fr 1fr;
+    }
+
+    #d-wall-sec-3>ul {
+        display: block;
+    }
+}
+
+@keyframes app-elements-fade-in {
+    0% {
+        color: transparent;
+        transform: translateX(20px);
+    }
+
+    100% {
+        color: #000;
+        transform: translateX(0px);
+    }
+}
+
+@keyframes app-elements-fade-in-dark {
+    0% {
+        color: transparent;
+        transform: translateX(10px);
+    }
+
+    100% {
+        color: #ffffff;
+        transform: translateX(0px);
+    }
+}
+
+@media (prefers-color-scheme: dark) {
+    :root {
+        background: black;
+        color: white;
+    }
+
+    svg {
+        fill: white;
+    }
+
+    a {
+        color: hsl(225, 36%, 72%) !important;
+    }
+
+    #butter,
+    .btc-o {
+        background-color: #333333;
+    }
+
+    #butter {
+        background-color: #333333c8;
+    }
+
+    .btc {
+        color: #fff;
+        animation: app-elements-fade-in-dark 2s cubic-bezier(0.75, 0, 0, 1.05) 0s 1;
+    }
+
+    .btc-o::before,
+    .btc-o::after {
+        background-image: url(../img/corner_a_dark.svg);
+    }
+
+    .btc-o::after {
+        background-image: url(../img/corner_b_dark.svg);
+    }
+
+    #cup.active .btc-o {
+        background-color: #666;
+    }
+
+    #btc-1 {
+        background-image: url(../img/home-button-dark.svg);
+    }
+
+    .btc:hover {
+        background-color: hsl(0, 0%, 53%);
+    }
+
+    #d-wall-mark {
+        color: rgba(255, 255, 255, 0.5);
+    }
+
+    #copyright-info {
+        background-color: #3b3b3b8b;
+    }
+
+    #update {
+        color: rgb(255, 255, 255, 0.401) !important;
+    }
+
+    #header-unit,
+    #tool,
+    #header-collapse {
+        background-color: #000 !important;
+    }
+
+    #quick-links>b {
+        color: rgba(255, 255, 255, 0.5) !important;
+    }
+
+    .header,
+    #quick-links {
+        border-right: solid 1px #707070 !important;
+    }
+
+    .loader-wrapper {
+        background-color: #141414af !important;
+    }
+
+    #en-warn,
+    .pages-container,
+    #app-element-2,
+    #tool,
+    #header-collapse {
+        border-color: #575757 !important;
+    }
+
+    #glass {
+        background-color: #000 !important;
+        border-left-color: #575757 !important;
+    }
+
+    .crumb>a,
+    .crumb a::after {
+        color: #ffffffd4 !important;
+    }
+
+    .tool-elements>a,
+    #dev-cal-1>a,
+    #header-unit>div>a,
+    #header-unit>div>span>a,
+    .loader-wrapper,
+    .app-element-pop-ups.active>a,
+    .app-element-pop-ups-3.active ul#app-site-list>a {
+        color: white !important;
+    }
+
+    @media (max-width: 768px) {
+
+        .header,
+        #quick-links {
+            border-right: none !important;
+        }
+    }
+}
+
+/* special elements style */
+
+::-webkit-scrollbar {
+    width: 5px;
+    height: 0px;
+    border-radius: 10px;
+    background: rgba(224, 224, 224, 0.8);
+}
+
+::-webkit-scrollbar-track {
+    border-radius: 10px;
+    background: #f1f1f100;
+}
+
+::-webkit-scrollbar-thumb {
+    border-radius: 10px;
+    background: #888;
+}
+
+a {
+    text-decoration: none;
+    color: rgb(35, 45, 75);
+}
+
+a:hover {
+    text-decoration: underline;
+}
+
+@font-face {
+    font-family: 'Source Han Sans';
+    src: url(../fonts/SourceHanSansCN-Regular-min.woff2) format('woff2');
+    font-weight: normal;
+}
+
+@font-face {
+    font-family: 'Source Han Sans';
+    src: url(../fonts/SourceHanSansCN-Bold-min.woff2) format('woff2');
+    font-weight: bold;
+}
\ No newline at end of file