:root {
  --blue-ink: #0a1a33;
  --blue-deep: #0d2347;
  --blue: #0a35b5;
  --blue-bright: #1e56c8;
  --blue-mist: #a9bce0;
  --ivory: #f4f4ef;
  --ink: #1d2430;
  --gray: #5a6472;
  --line: #e3e4de;
  --serif: "Noto Serif SC", "Source Han Serif SC", "SimSun", "宋体", serif;
  --sans: "Microsoft YaHei", "PingFang SC", sans-serif;
  --el-color-primary: #0a35b5;
}
[v-cloak] { display: none; }
[hidden] { display: none !important; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scrollbar-width: none; }
html::-webkit-scrollbar, body::-webkit-scrollbar { width: 0; height: 0; display: none; }
html, body { overflow-x: hidden; max-width: 100vw; }
.el-row { overflow-x: clip; }
body { font-family: var(--sans); color: var(--ink); background: #fff; line-height: 1.75; font-size: 15px; margin: 0; }
img { display: block; max-width: 100%; }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 28px; }
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 2000;
  display: flex; align-items: center;
  padding: 0 36px; height: 76px;
  background: #ffffff;
  border-bottom: 1px solid var(--line);
}
.nav.scrolled { box-shadow: 0 4px 18px rgba(10, 26, 51, .08); }
.brand { display: flex; align-items: center; text-decoration: none; }
.brand img { height: 56px; width: auto; }
.nav-menu {
  flex: 1 1 auto; background: transparent !important; border-bottom: none !important;
  display: flex; justify-content: center;
}
.nav-cta {
  margin-left: auto;
  color: var(--blue); text-decoration: none;
  border: 1.5px solid var(--blue);
  font-size: 13.5px; letter-spacing: 2px;
  padding: 8px 22px;
  transition: background .2s, color .2s;
}
.nav-cta:hover { background: var(--blue); color: #fff; }
.nav-menu.el-menu--horizontal { border-bottom: none; }
.nav-menu .el-menu-item {
  color: var(--ink) !important;
  background: transparent !important;
  font-size: 14px; letter-spacing: 2px;
  border-bottom: 2px solid transparent !important;
  padding: 0 16px;
  transition: color .2s;
}
.nav-menu .el-menu-item:hover,
.nav-menu .el-menu-item:focus {
  color: var(--blue) !important;
  background: transparent !important;
  border-bottom-color: transparent !important;
}
.nav-menu .el-menu-item.is-active {
  color: var(--blue) !important;
  background: transparent !important;
  border-bottom: 2px solid var(--blue) !important;
}
.nav-menu .el-menu-item a { color: inherit; text-decoration: none; }
.nav-menu .el-menu-item a:hover { color: inherit; }
.hero { margin-top: 0; }
.hero .el-carousel__container { height: calc(100vh - 76px); min-height: 560px; }
.hero .el-carousel__item {
  position: absolute; left: 0; top: 0;
  width: 100%; height: 100%;
  opacity: 0;
  transform: none !important;
  transition: opacity 1.1s ease;
}
.hero .el-carousel__item.is-active { opacity: 1; }
.slide { position: relative; height: 100%; overflow: hidden; }
.slide .bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  transform: scale(1.08);
}
.el-carousel__item.is-active .slide .bg { animation: kenburns 7.5s ease-out forwards; }
@keyframes kenburns {
  from { transform: scale(1.08); }
  to { transform: scale(1); }
}
.el-carousel__item .caption .tag,
.el-carousel__item .caption .cap-t,
.el-carousel__item .caption .sub {
  opacity: 0;
  transform: translateY(30px);
}
.el-carousel__item.is-active .caption .tag { animation: capIn .7s .15s ease forwards; }
.el-carousel__item.is-active .caption .cap-t { animation: capIn .8s .35s ease forwards; }
.el-carousel__item.is-active .caption .sub { animation: capIn .8s .6s ease forwards; }
@keyframes capIn {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: none; }
}
.el-carousel__item:not(.is-active) .caption * { transition: opacity .35s ease, transform .35s ease; }
.shade { position: absolute; inset: 0; background: linear-gradient(100deg, rgba(10, 26, 51, .9) 0%, rgba(10, 26, 51, .58) 48%, rgba(10, 26, 51, .16) 100%); }
.caption { position: relative; z-index: 2; height: 100%; display: flex; flex-direction: column; justify-content: center; }
.caption .tag {
  color: #dbe4f2; font-size: 14px; letter-spacing: 3px;
  display: flex; align-items: center; gap: 14px; margin-bottom: 22px;
}
.caption .tag::before { content: ""; width: 42px; height: 2px; background: var(--blue-bright); }
.caption .cap-t {
  color: #fff; font-family: var(--serif); font-weight: 700;
  font-size: clamp(42px, 5.6vw, 68px); letter-spacing: 2px; line-height: 1.2;
  margin: 0 0 18px;
}
.caption .cap-t.gold {
  font-size: clamp(52px, 7vw, 92px);
  letter-spacing: 6px;
  background: linear-gradient(180deg, #f8e9a8 0%, #e8c96a 30%, #b8860b 55%, #f4dd8a 78%, #c9962a 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 3px 10px rgba(0, 0, 0, .45));
}
.caption .sub { color: #ccd7ea; font-size: 16px; letter-spacing: 1px; }
.hero .el-carousel__arrow { background: rgba(10,26,51,.4); border: 1px solid rgba(255,255,255,.3); }
.hero .el-carousel__arrow:hover { background: var(--blue); }
.progs {
  position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%);
  z-index: 5; display: flex; gap: 12px;
}
.prog { width: 110px; height: 3px; background: rgba(255,255,255,.28); }
.prog span { display: block; height: 100%; width: 0; background: var(--blue-bright); }
.prog.on span { animation: fillbar 5.5s linear forwards; }
.el-carousel.hero:hover ~ .progs .prog.on span { animation-play-state: paused; }
@keyframes fillbar { to { width: 100%; } }
.page-banner {
  position: relative;
  overflow: hidden;
  padding: 176px 0 78px;
  background: linear-gradient(120deg, var(--blue-ink) 0%, #12295a 100%);
}
.page-banner::before {
  content: "";
  position: absolute;
  inset: -70px;
  background: url("../img/banner-bg.jpg") center / cover no-repeat;
  filter: blur(18px) saturate(.92) brightness(.78);
  transform: scale(1.06);
}
.page-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(10, 26, 51, .88) 0%, rgba(18, 41, 90, .74) 55%, rgba(10, 26, 51, .62) 100%);
}
.page-banner .wrap { position: relative; z-index: 1; }
.crumb { color: #8ea4c4; font-size: 13px; letter-spacing: 2px; margin-bottom: 10px; }
.page-banner h1 { font-family: var(--serif); color: #fff; font-size: 40px; letter-spacing: 4px; margin: 0; }
.stats { background: #fff; border-bottom: 1px solid var(--line); }
.stat { text-align: center; padding: 40px 10px 36px; border-left: 1px solid var(--line); }
.stat:first-child { border-left: none; }
.stat b { display: block; font-family: var(--serif); color: var(--blue-ink); font-size: 48px; line-height: 1.1; font-weight: 600; }
.stat span { color: var(--gray); font-size: 13.5px; letter-spacing: 1px; }
.section { padding: 84px 0; }
.section.dark { background: var(--blue-ink); color: #d9e1ee; }
.section.soft { background: var(--ivory); }
.sec-head { display: flex; align-items: center; gap: 20px; margin-bottom: 52px; }
.sec-head::after { content: ""; flex: 1 1 auto; height: 1px; background: var(--line); }
.honors .sec-head::after { flex: 0 0 120px; }
.section.dark .sec-head::after { background: rgba(255,255,255,.14); }
.sec-num {
  font-family: var(--serif); font-size: 40px; font-weight: 700;
  color: var(--blue); line-height: 1; letter-spacing: 2px;
}
.section.dark .sec-num { color: var(--blue-bright); }
.sec-head h2 { font-family: var(--serif); font-size: 32px; letter-spacing: 4px; color: var(--blue-ink); font-weight: 700; margin: 0; white-space: nowrap; }
.section.dark .sec-head h2 { color: #fff; }
.about-text p { margin-bottom: 16px; color: var(--gray); font-size: 15px; text-align: justify; }
.about-text .lead { color: var(--ink); font-weight: 600; border-left: 3px solid var(--blue); padding-left: 18px; }
.about-img img { box-shadow: 0 30px 70px rgba(10, 26, 51, .22); }
.about-img figcaption { margin-top: 14px; font-size: 12.5px; color: #9aa4b8; text-align: center; letter-spacing: 1px; }
.more { display: inline-block; margin-top: 6px; color: var(--blue); text-decoration: none; font-size: 14px; letter-spacing: 1px; border-bottom: 1px solid currentColor; padding-bottom: 2px; }
.more:hover { color: var(--blue-bright); }
.light-more { color: var(--blue-mist); }
.award-line { padding-left: 6px; }
.award { display: flex; gap: 20px; align-items: baseline; }
.award .year { font-family: var(--serif); color: var(--blue); font-size: 16px; font-weight: 700; white-space: nowrap; }
.award p { font-size: 14px; color: var(--gray); margin: 0; }
.section.dark .award .year { color: var(--blue-mist); }
.section.dark .award p { color: #c5d2e8; }
.award-line .el-timeline-item__node { background: var(--blue); }
.note { margin-top: 26px; color: #8a93a3; font-size: 13px; letter-spacing: 1px; }
.train-line { font-family: var(--serif); font-size: 30px; font-weight: 700; color: var(--blue-ink); letter-spacing: 4px; margin: 0; }
.medal-img img { width: 100%; }
.medal-img figcaption { margin-top: 10px; text-align: center; font-size: 12.5px; color: #8a93a3; letter-spacing: 2px; }
.cert-wall { margin-top: 12px; }
.cert-wall img { width: 100%; }
.cert-wall figcaption { margin-top: 14px; text-align: center; font-size: 12.5px; color: #7f8ca3; letter-spacing: 2px; }
.project { margin-bottom: 32px; }
.p-img img { box-shadow: 0 30px 70px rgba(10, 26, 51, .2); }
.p-body h3 { font-family: var(--serif); font-size: 28px; color: var(--blue-ink); margin: 0 0 20px; letter-spacing: 2px; }
.p-body p { color: var(--gray); font-size: 15px; margin: 0 0 18px; text-align: justify; }
.p-tags { color: var(--blue); font-size: 14px; letter-spacing: 1px; }
.gallery { margin-top: 12px; }
.g-item img { width: 100%; height: 250px; object-fit: cover; }
.g-item figcaption { margin-top: 10px; font-size: 12.5px; color: #8a93a3; letter-spacing: 2px; text-align: center; }
.value { border-top: 2px solid var(--blue-ink); padding-top: 22px; height: 100%; }
.values-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 36px; }
.mb { margin-bottom: 40px; }
.v-num { font-family: var(--serif); font-size: 15px; color: var(--blue); letter-spacing: 2px; }
.value h3 { font-family: var(--serif); font-size: 20px; color: var(--blue-ink); margin: 8px 0 12px; letter-spacing: 2px; }
.value p { font-size: 13.5px; color: var(--gray); }
.join-band {
  position: relative; overflow: hidden;
  padding: 44px 0;
  background: var(--blue);
}
.join-band::before, .join-band::after {
  content: ""; position: absolute;
  top: -60%; height: 220%;
  width: 180px;
  background: rgba(255,255,255,.05);
  transform: rotate(24deg);
  pointer-events: none;
}
.join-band::before {
  left: 18%;
  animation: ribbonL 11s ease-in-out infinite alternate;
}
.join-band::after {
  right: 22%;
  background: rgba(255,255,255,.035);
  animation: ribbonR 14s ease-in-out infinite alternate;
}
@keyframes ribbonL {
  from { transform: rotate(24deg) translateX(-30px); }
  to { transform: rotate(24deg) translateX(40px); }
}
@keyframes ribbonR {
  from { transform: rotate(24deg) translateX(30px); }
  to { transform: rotate(24deg) translateX(-40px); }
}
.join-band-inner {
  position: relative; z-index: 1;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 20px;
}
.join-band h2 {
  font-family: var(--serif); color: #fff;
  font-size: 27px; letter-spacing: 3px; margin: 0;
  white-space: nowrap;
}
.cta {
  color: var(--blue); background: #fff; text-decoration: none;
  font-size: 15px; font-weight: 700; letter-spacing: 2px;
  padding: 17px 44px; transition: background .2s, color .2s;
  white-space: nowrap;
  border: 1px solid var(--line);
}
.cta:hover { background: var(--blue-ink); color: #fff; }
.join-text p { color: var(--gray); font-size: 15px; text-align: justify; }
.join-text .lead { color: var(--ink); font-weight: 600; border-left: 3px solid var(--blue); padding-left: 18px; font-size: 16px; }
.mt40 { margin-top: 56px; }
.join-meta { list-style: none; padding: 0; margin: 0; }
.join-meta li { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; color: var(--gray); font-size: 14px; }
.join-meta img { width: 17px; }
.join-card { border: 1px solid var(--line); background: #fff; padding: 40px 34px; text-align: center; }
.join-card img { width: 190px; max-width: 100%; margin: 0 auto; }
.join-card h3 { font-family: var(--serif); font-size: 20px; color: var(--blue-ink); letter-spacing: 2px; margin: 0 0 14px; }
.join-card p { color: var(--gray); font-size: 13.5px; margin: 0 0 10px; line-height: 1.8; }
.join-card .cta { display: inline-block; margin: 12px 0 18px; }
.jc-qr { margin-top: 6px; }
.footer { background: var(--ivory); color: var(--ink); }
.foot-main {
  display: flex; align-items: center; justify-content: space-between;
  gap: 28px;
  padding-top: 42px; padding-bottom: 38px;
}
.foot-brand { flex: 0 0 auto; }
.foot-brand img { height: 52px; width: auto; }
.foot-links { display: flex; gap: 4px; flex: 1 1 auto; justify-content: center; flex-wrap: wrap; }
.foot-links a { color: var(--gray); text-decoration: none; font-size: 13.5px; padding: 4px 14px; letter-spacing: 1px; white-space: nowrap; }
.foot-links a:hover, .foot-links a.on { color: var(--blue); }
.foot-qr { display: flex; flex-direction: column; align-items: center; gap: 10px; flex: 0 0 auto; }
.foot-qr img { width: 96px; display: block; }
.foot-qr p { color: var(--gray); font-size: 12.5px; letter-spacing: 1px; margin: 0; line-height: 2; text-align: center; }
.foot-qr p span { display: block; color: #9aa49a; }
.foot-bar { border-top: 1px solid var(--line); }
.foot-inner {
  display: flex; justify-content: space-between; flex-wrap: nowrap; gap: 8px;
  padding-top: 18px; padding-bottom: 18px;
  color: #8a93a3; font-size: 12.5px; letter-spacing: 1px;
  white-space: nowrap;
}
.foot-inner span { white-space: nowrap; }
.el-backtop {
  --el-backtop-bg-color: #ffffff;
  --el-backtop-hover-bg-color: var(--blue);
  width: 42px; height: 42px;
  color: var(--blue);
  border: 1px solid var(--line);
  box-shadow: 0 6px 20px rgba(10, 26, 51, .12);
  transition: all .25s;
}
.el-backtop:hover { color: #fff; border-color: var(--blue); }
.rv-ready .rv { opacity: 0; transition: opacity .65s cubic-bezier(.22,.61,.36,1), transform .65s cubic-bezier(.22,.61,.36,1); }
.rv-ready .rv.rv-u { transform: translateY(30px); }
.rv-ready .rv.rv-l { transform: translateX(-38px); }
.rv-ready .rv.rv-r { transform: translateX(38px); }
.rv-ready .rv.rv-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .rv, .el-carousel__item .caption * { opacity: 1 !important; transform: none !important; animation: none !important; }
}
@media (max-width: 768px) {
  .hero .el-carousel__container { height: 76vh; }
  .hero .el-carousel__arrow { width: 34px; height: 34px; font-size: 16px; }
  .progs { width: 46%; }
  .caption .tag { font-size: clamp(10px, 3vw, 12px); letter-spacing: 1px; gap: 10px; margin-bottom: 14px; white-space: nowrap; }
  .caption .tag::before { width: 24px; }
  .caption .cap-t { font-size: clamp(34px, 10vw, 44px); margin-bottom: 12px; }
  .caption .cap-t.gold { font-size: clamp(38px, 12vw, 52px); letter-spacing: 4px; }
  .caption .sub { font-size: clamp(10px, 3.1vw, 12.5px); letter-spacing: 0; white-space: nowrap; }
  .join-band h2 { font-size: clamp(17px, 5.4vw, 22px); letter-spacing: 2px; }
  .foot-links { gap: 0; }
}
@media (max-width: 900px) {
  .mq { -webkit-mask-image: none; mask-image: none; }
  .mq-track img.v { height: 130px; }
  .mq-track img.h { height: 96px; }
  .honors .sec-head { padding: 0 16px; }
  .honors .sec-head::before,
  .honors .sec-head::after { width: 40px; flex: 0 0 40px; }
  .honors .sec-head h2 { white-space: nowrap; font-size: 22px; }
  .nav-menu { display: none; }
  .values-grid { grid-template-columns: 1fr 1fr; }
  .stat { border-left: none; border-top: 1px solid var(--line); }
}
.narrow { max-width: 760px; }
.hello { font-size: 15px; color: var(--gray); margin-bottom: 6px; }
.code { font-family: var(--serif); font-size: 46px; letter-spacing: 10px; color: var(--blue); font-weight: 700; margin: 0 0 18px; }
.result { font-size: 14px; color: var(--blue); margin: 0 0 16px; }
.pass { background: var(--ivory); border-left: 3px solid var(--green-soft, #4a7a5e); padding: 14px 18px; font-size: 14.5px; margin: 0 0 26px; }
.big-pass { background: #e9f2ec; color: #1e4d36; font-weight: 600; }
.challenge { border: 1px solid var(--line); background: #fff; padding: 30px 32px; margin-bottom: 28px; }
.ch-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.ch-tag { font-size: 13px; letter-spacing: 2px; font-weight: 600; }
.ch-tag.easy { color: #1e6b3a; }
.ch-tag.hard { color: var(--blue); }
.ch-left { font-size: 12px; color: #8a93a3; }
.ch-q { font-size: 15px; margin: 0 0 18px; }
.ch-hint { font-size: 12.5px; color: #9aa4b8; margin: 12px 0 0; }
.challenge form, .signup-form { display: flex; gap: 12px; align-items: stretch; }
.challenge input[type=text] { flex: 1; border: 1px solid var(--line); font-size: 15px; padding: 12px 14px; min-width: 0; }
.challenge .cta, .signup-form .cta {
  background: var(--blue); color: #fff; border: none;
  padding: 12px 26px; font-size: 13.5px; cursor: pointer;
  letter-spacing: 1px;
}
.cta.loading { opacity: .75; pointer-events: none; }
.cta.loading::before {
  content: ""; display: inline-block; width: 14px; height: 14px;
  border: 2px solid rgba(255, 255, 255, .35); border-top-color: #fff;
  border-radius: 50%; margin-right: 9px; vertical-align: -2px;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.challenge .cta:hover, .signup-form .cta:hover { background: var(--blue-ink); }
.signup-form { display: flex; flex-direction: column; gap: 16px; max-width: 480px; }
.signup-form label { display: grid; grid-template-columns: 4.5em 1fr; align-items: center; gap: 14px; font-size: 14px; color: var(--ink); }
.signup-form label input { flex: 1; padding: 11px 14px; border: 1px solid var(--line); font-size: 14px; }
.signup-form .cta { align-self: flex-start; border: none; cursor: pointer; font-family: var(--sans); }
.jc-line { color: var(--gray); font-size: 14px; margin: 0 0 10px; }
.jc-tip { color: #8a93a3; font-size: 12px; margin: 18px 0 10px; }
.jc-qr { width: 150px; margin: 0 auto; }
@media (max-width: 900px) {
  .foot-main { flex-direction: column; text-align: center; padding-top: 36px; padding-bottom: 30px; }
  .foot-qr { flex-direction: column; gap: 10px; }
  .foot-qr p { text-align: center; }
  .nav { padding: 0 18px; height: 64px; }
  .sec-ico { height: 30px; }
  .sec-head { margin-bottom: 36px; }
  .section { padding: 64px 0; }
  .g-item img { height: 190px; }
  .brand img { height: 40px; }
  .nav-menu { display: none; }
  .nav-cta { padding: 6px 14px; font-size: 12.5px; letter-spacing: 1px; }
  .stat { border-left: none; border-top: 1px solid var(--line); }
  .values-grid { grid-template-columns: 1fr 1fr; }
  .stat-grid .el-col-6 { flex: 0 0 50%; max-width: 50%; }
  .challenge form { flex-direction: column; }
  .signup-form label { flex-direction: column; align-items: stretch; gap: 6px; }
  .foot-inner { font-size: 11px; gap: 4px; flex-direction: column; align-items: center; }
}
#about .el-row, .about-flex { align-items: center; }
#about .about-text p { font-size: 15.5px; }
#about .about-img img { width: 100%; }
.rule-list { list-style: none; padding: 0; margin: 4px 0 8px; }
.rule-list li {
  position: relative; padding-left: 18px;
  color: var(--gray); font-size: 13.5px; line-height: 2.1;
}
.rule-list li::before {
  content: ""; position: absolute; left: 2px; top: .95em;
  width: 6px; height: 6px; background: var(--blue);
}
#py-code {
  width: 100%; min-height: 200px;
  background: var(--blue-ink); color: #d7e3f4;
  border: none; padding: 18px 20px; margin: 0 0 12px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 14px; line-height: 1.8;
  resize: vertical;
}
.py-bar { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.py-bar .mini {
  background: var(--blue); color: #fff; border: none;
  padding: 9px 20px; font-size: 13px; cursor: pointer; letter-spacing: 1px;
}
.py-bar .mini:hover { background: var(--blue-ink); }
.py-out {
  background: var(--blue-ink); color: #7fe0a6;
  padding: 16px 20px; min-height: 48px; margin: 0 0 18px;
  font-family: Consolas, monospace; font-size: 14px;
}
.done { background: #f0f5f0; border-radius: 8px; padding: 13px 18px; font-size: 14.5px; margin: 0 0 26px; color: #1e6b3a; }
.dead { background: #f9eeee; border-radius: 8px; padding: 13px 18px; font-size: 14.5px; margin: 0 0 26px; color: #8c1f28; }
.honors { padding: 24px 0 70px; overflow: hidden; }
.honors .sec-head {
  margin-bottom: 10px; padding: 0 28px;
  justify-content: center;
}
.honors .sec-head::before {
  content: ""; display: block;
  width: 120px; height: 1px; background: var(--line);
}
.mq { overflow: hidden; }
.mq + .mq { margin-top: 26px; }
.mq-track { display: flex; gap: 26px; width: max-content; align-items: center; }
.mq-track:not(.mq-ready) { animation-play-state: paused !important; }
.mq-track.l { animation: mql var(--dur, 36s) linear infinite; }
.mq-track.r { animation: mqr var(--dur, 36s) linear infinite; }
.mq:hover .mq-track { animation-play-state: paused; }
.mq-track img {
  background: #fff; border: 1px solid var(--line);
  box-shadow: 0 10px 26px rgba(10, 26, 51, .1);
}
.mq-track img.v { height: 185px; width: auto; }
.mq-track img.h { height: 132px; width: auto; }
@keyframes mql { from { transform: translateX(0); } to { transform: translateX(calc(-1 * var(--unit, 50%))); } }
@keyframes mqr { from { transform: translateX(calc(-1 * var(--unit, 50%))); } to { transform: translateX(0); } }

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