@import url('https://fonts.googleapis.com/css2?family=Kalam:wght@400;700&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root{
  --paper:#F6F4EE;
  --paper2:#EFEBE0;
  --ink:#232A33;
  --blue:#2B5D8C;
  --red:#B23A2E;
  --green:#2E7D4F;
  --purple:#6C4F9E;
  --amber:#9C7A2E;
  --line:#D8D2C0;
  --muted:#7A7568;
}
*{box-sizing:border-box;}
body{
  margin:0;
  background:
    linear-gradient(var(--line) 1px, transparent 1px) 0 0/100% 32px,
    var(--paper);
  color:var(--ink);
  font-family:'IBM Plex Sans', sans-serif;
  min-height:100vh;
  padding:clamp(18px,3vw,42px) clamp(14px,4vw,48px) 60px;
}
.wrap{width:100%;max-width:1120px;margin:0 auto;}

header{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:end;
  margin-bottom:18px;
  gap:10px 18px;
}
header>div:first-child{min-width:0;}
h1{
  font-family:'Kalam', cursive;
  font-weight:700;
  font-size:clamp(28px,3.2vw,40px);
  margin:0;
  color:var(--ink);
  transform:rotate(-1deg);
  line-height:1.15;
  overflow-wrap:anywhere;
}
.sub{font-size:clamp(12px,1.3vw,14px);color:var(--muted);margin-top:2px;}
.learning-tagline{margin-top:5px;color:var(--ink);font-size:clamp(13px,1.4vw,15px);font-weight:500;line-height:1.45;}
.how-it-works-link{display:inline-flex;align-items:center;width:fit-content;color:var(--purple);text-decoration:none;border-bottom:1px solid currentColor;font-weight:500;}
.how-it-works-link:hover{color:var(--blue);}
.how-it-works-link:focus-visible{outline:2px solid var(--blue);outline-offset:4px;}

.stats{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end;}
.header-tools{display:flex;flex-direction:column;align-items:flex-end;gap:8px;min-width:0;}
.header-actions{display:flex;align-items:center;justify-content:flex-end;gap:10px;flex-wrap:wrap;}
.feedback-entry{background:transparent;border:0;border-bottom:1px solid var(--muted);padding:2px 0;color:var(--muted);font:12px 'IBM Plex Sans',sans-serif;cursor:pointer;}
.feedback-entry:hover{color:var(--purple);border-color:var(--purple);}
.language-picker{display:flex;align-items:center;gap:7px;color:var(--muted);font-size:12px;}
.language-picker select{background:#fff;border:1px solid var(--line);border-radius:3px;padding:5px 8px;color:var(--ink);font:12px 'IBM Plex Sans',sans-serif;cursor:pointer;box-shadow:1px 1px 0 var(--line);}
@media(max-width:700px){
  header{grid-template-columns:1fr;align-items:start;}
  .header-tools{width:100%;min-width:0;align-items:stretch;}
  .header-actions{justify-content:space-between;}
  .stats{width:100%;}
  .chip{flex:1;text-align:center;white-space:nowrap;}
}
@media(max-width:390px){
  h1{font-size:27px;}
  .sub{font-size:12px;white-space:normal;}
  .stats{gap:5px;}
  .chip{padding-left:6px;padding-right:6px;}
}
.chip{
  background:#fff;
  border:1px solid var(--line);
  border-radius:3px;
  padding:5px 10px;
  font-size:12px;
  font-family:'IBM Plex Mono',monospace;
  box-shadow:1px 1px 0 var(--line);
}
.chip b{font-size:14px;}

.controls{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;font-size:13px;}
.toggle{
  display:flex;align-items:center;gap:6px;cursor:pointer;user-select:none;color:var(--muted);
}
.toggle input{accent-color:var(--purple);}
.reset{
  background:none;border:none;color:var(--muted);text-decoration:underline;
  cursor:pointer;font-size:12px;font-family:inherit;
}

.round-intro,.round-summary{
  position:relative;
  background:var(--paper2);
  border:1px solid var(--line);
  border-radius:2px;
  padding:32px 26px 26px;
  box-shadow:3px 4px 0 var(--line);
  transform:rotate(-0.35deg);
  margin-bottom:16px;
}
.round-kicker{
  color:var(--purple);
  font:600 12px 'IBM Plex Mono',monospace;
  letter-spacing:.08em;
  text-transform:uppercase;
}
.round-intro h2,.round-summary h2{
  margin:8px 0 6px;
  font:700 25px 'Kalam',cursive;
}
.round-intro p,.round-summary p{margin:0;color:var(--muted);font-size:13px;line-height:1.65;}
.start-round,.continue-round{
  width:100%;margin-top:18px;padding:12px;border:0;border-radius:3px;
  background:var(--ink);color:var(--paper);font:700 15px 'Kalam',cursive;cursor:pointer;
}
.start-round:hover,.continue-round:hover{background:#3a4553;}

.card{
  position:relative;
  background:var(--paper2);
  border:1px solid var(--line);
  border-radius:2px;
  padding:34px 26px 26px;
  box-shadow:3px 4px 0 var(--line);
  transform:rotate(-0.4deg);
  margin-bottom:16px;
}
.round-progress-head{
  display:flex;align-items:center;gap:10px;margin:0 74px 12px 0;
  color:var(--purple);font:600 12px 'IBM Plex Mono',monospace;
}
.round-progress-track{display:block;flex:1;height:6px;border-radius:999px;background:#DDD6C5;overflow:hidden;}
.round-progress-track span{display:block;width:0;height:100%;background:var(--purple);transition:width .2s ease;}
.tape{
  position:absolute; top:-10px; left:24px;
  width:70px; height:22px;
  background:rgba(108,79,158,0.22);
  border:1px solid rgba(108,79,158,0.3);
  transform:rotate(-3deg);
}
.timer{
  position:absolute; top:14px; right:18px;
  font-family:'IBM Plex Mono',monospace;
  font-size:13px;
  color:var(--muted);
  display:flex;align-items:center;gap:6px;
}
.dot{width:7px;height:7px;border-radius:50%;background:var(--red);animation:pulse 1s infinite;}
@keyframes pulse{50%{opacity:.25;}}

.prompt{
  font-family:'IBM Plex Mono',monospace;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  min-height:70px;
  margin-top:6px;
}

.options{display:grid;gap:10px;margin-top:6px;}
.opt{
  text-align:left;
  background:#fff;
  border:1px solid var(--line);
  border-radius:3px;
  padding:11px 14px;
  font-size:14px;
  font-family:'IBM Plex Sans',sans-serif;
  cursor:pointer;
  transition:transform .08s ease;
  position:relative;
}
.opt:hover:not(:disabled){border-color:var(--blue);}
.opt:active:not(:disabled){transform:scale(0.99);}
.opt:disabled{cursor:default;}
.opt.correct{border-color:var(--green);background:#EFF7F1;box-shadow:inset 0 0 0 1px var(--green);}
.opt.wrong{border-color:var(--red);background:#FBEEEC;box-shadow:inset 0 0 0 1px var(--red);}
.opt.reveal{border-color:var(--green);text-decoration:underline;text-decoration-color:var(--green);}

.unsure{
  margin-top:2px;
  width:100%;
  background:transparent;
  border:1px dashed var(--muted);
  border-radius:3px;
  padding:10px 14px;
  font-size:13px;
  color:var(--muted);
  font-family:'IBM Plex Sans',sans-serif;
  cursor:pointer;
}
.unsure:hover:not(:disabled){border-color:var(--amber);color:var(--amber);}
.unsure:disabled{cursor:default;opacity:.5;}
.unsure.picked{border-color:var(--amber);color:var(--amber);background:#FAF3E4;}

.why{
  margin-top:16px;
  padding-top:14px;
  border-top:1px dashed var(--line);
  font-size:13.5px;
  color:var(--ink);
  line-height:1.6;
  display:none;
}
.why b{color:var(--purple);}
.framework-link{color:var(--purple);font-weight:600;text-decoration:none;border-bottom:1px solid currentColor;}
.framework-link:hover{color:var(--blue);}
.why .leet{
  display:inline-block;
  margin-top:10px;
  font-family:'IBM Plex Mono',monospace;
  font-size:12.5px;
}
.why .leet a{color:var(--blue);text-decoration:none;border-bottom:1px solid var(--blue);}
.why .leet a:hover{color:var(--ink);border-color:var(--ink);}
.why.show{display:block;}
.mistake-note{
  margin-top:10px;
  padding:8px 10px;
  border-left:3px solid var(--red);
  background:#FBEEEC;
}
.mistake-note b{color:var(--red);}
.mistake-note code,.solution code{
  font-family:'IBM Plex Mono',monospace;
  font-size:.92em;
}
.solution{
  margin-top:12px;
  padding:10px 12px;
  background:#F7F3FB;
  border-left:3px solid var(--purple);
}
.solution-title{font-weight:600;color:var(--purple);}
.solution ol{margin:6px 0 0;padding-left:20px;}
.solution li{margin:4px 0;}
.solution pre{
  overflow:auto;
  margin:10px 0 0;
  padding:10px;
  background:#232A33;
  color:#F6F4EE;
  border-radius:2px;
  font-size:12px;
  line-height:1.5;
}

.next{
  margin-top:14px;
  width:100%;
  background:var(--ink);
  color:var(--paper);
  border:none;
  border-radius:3px;
  padding:12px;
  font-size:14px;
  font-family:'Kalam',cursive;
  font-weight:700;
  letter-spacing:.5px;
  cursor:pointer;
  display:none;
}
.next.show{display:block;}
.next:hover{background:#3a4553;}

.round-time{margin-top:2px!important;font-family:'IBM Plex Mono',monospace;}
.round-mistakes{
  margin-top:18px;padding:12px;background:#fff;border-left:3px solid var(--amber);
  font-size:13px;line-height:1.65;
}
.round-mistake-list{margin:8px 0;color:var(--ink);font-family:'IBM Plex Mono',monospace;}
.round-end-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:10px;}
.round-end-actions button{
  background:transparent;border:1px dashed var(--muted);border-radius:3px;padding:9px;
  color:var(--muted);font:13px 'IBM Plex Sans',sans-serif;cursor:pointer;
}
.round-end-actions button:hover{border-color:var(--blue);color:var(--blue);}
.round-feedback{margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);}
.round-feedback-title{font-size:13px;font-weight:600;margin-bottom:9px;}
.round-feedback-options{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;}
.round-feedback-options button{padding:9px 5px;background:#fff;border:1px solid var(--line);border-radius:3px;color:var(--ink);font:12px 'IBM Plex Sans',sans-serif;cursor:pointer;}
.round-feedback-options button:hover:not(:disabled){border-color:var(--purple);}
.round-feedback-options button.selected{border-color:var(--green);background:#EFF7F1;color:var(--green);}
.round-feedback-options button:disabled:not(.selected){opacity:.5;}
.feedback-status{min-height:18px;margin-top:8px;font-size:12px;}
.feedback-status.success{color:var(--green);}.feedback-status.error{color:var(--red);}

.feedback-dialog{width:min(520px,calc(100% - 28px));padding:0;border:1px solid var(--line);border-radius:3px;background:var(--paper2);color:var(--ink);box-shadow:5px 6px 0 rgba(35,42,51,.25);}
.feedback-dialog::backdrop{background:rgba(35,42,51,.48);}
.feedback-dialog-card{position:relative;padding:28px 24px 22px;}
.feedback-dialog h2{margin:7px 0 4px;font:700 25px 'Kalam',cursive;}
.feedback-dialog p{margin:0 0 18px;color:var(--muted);font-size:13px;line-height:1.55;}
.dialog-close{position:absolute;right:13px;top:10px;border:0;background:transparent;color:var(--muted);font-size:25px;cursor:pointer;}
.rating-fieldset{border:0;padding:0;margin:0 0 16px;}
.rating-fieldset legend,.feedback-comment-label span{display:block;margin-bottom:7px;font-size:13px;font-weight:600;}
.star-rating{display:flex;gap:7px;}
.star-rating input{position:absolute;opacity:0;pointer-events:none;}
.star-rating label{font-size:30px;line-height:1;color:#C9C2B0;cursor:pointer;}
.star-rating input:checked+label{color:var(--amber);}
.star-rating label:has(~ input:checked),.star-rating label:hover,.star-rating label:has(~ label:hover){color:var(--amber);}
.star-rating input:focus-visible+label{outline:2px solid var(--blue);outline-offset:3px;}
.feedback-comment-label textarea{display:block;width:100%;resize:vertical;border:1px solid var(--line);border-radius:3px;background:#fff;color:var(--ink);padding:10px;font:13px/1.5 'IBM Plex Sans',sans-serif;}
.feedback-comment-label textarea:focus{outline:2px solid var(--blue);outline-offset:1px;}
.feedback-submit{width:100%;margin-top:14px;padding:11px;border:0;border-radius:3px;background:var(--ink);color:var(--paper);font:700 14px 'Kalam',cursive;cursor:pointer;}
.feedback-submit:hover{background:#3a4553;}
@media(max-width:430px){.round-feedback-options{grid-template-columns:1fr;}.feedback-dialog-card{padding:26px 18px 18px;}}

.weak{
  margin-top:22px;
  font-size:12.5px;
  color:var(--muted);
}
.weak b{color:var(--ink);}

/* —— tabs —— */
.tabs{
  display:flex;
  gap:0;
  margin-bottom:16px;
  border-bottom:1px solid var(--line);
}
.tab{
  flex:1;
  background:transparent;
  border:none;
  border-bottom:2px solid transparent;
  margin-bottom:-1px;
  padding:10px 12px;
  font-family:'Kalam',cursive;
  font-weight:700;
  font-size:16px;
  color:var(--muted);
  cursor:pointer;
  letter-spacing:.3px;
  min-height:44px;
  line-height:1.2;
}
.tab:hover{color:var(--ink);}
.tab.active{
  color:var(--ink);
  border-bottom-color:var(--purple);
}
.mode[hidden]{display:none;}

/* —— about —— */
.about-page{display:flex;justify-content:center;}
.about-wrap{max-width:1120px;}
.about-header{align-items:center;}
.about-header h1{margin-top:7px;}
.back-home{display:inline-block;color:var(--purple);font-size:13px;text-decoration:none;border-bottom:1px solid currentColor;}
.back-home:hover{color:var(--blue);}
.back-home:focus-visible{outline:2px solid var(--blue);outline-offset:4px;}
.about-card{
  position:relative;
  width:min(100%,900px);
  padding:38px clamp(24px,6vw,68px) 42px;
  background:var(--paper2);
  border:1px solid var(--line);
  border-radius:2px;
  box-shadow:3px 4px 0 var(--line);
}
.about-card[hidden]{display:none;}
.about-card h2{margin:9px 0 22px;font:700 clamp(25px,3vw,34px)/1.25 'Kalam',cursive;}
.about-card p{margin:0 0 1.15em;font-size:15px;line-height:1.85;color:var(--ink);}
.about-card p:last-child{margin-bottom:0;}
.about-card strong{color:var(--purple);font-weight:600;}

/* —— framework rewrite —— */
.rewrite-intro{font-size:13px;color:var(--muted);margin:0 0 12px;line-height:1.5;}
.rewrite-card{
  position:relative;background:var(--paper2);border:1px solid var(--line);border-radius:2px;
  padding:30px 22px 22px;box-shadow:3px 4px 0 var(--line);transform:rotate(-0.3deg);
}
.rewrite-label{font-size:15px;color:var(--purple);font-family:'IBM Plex Mono',monospace;font-weight:600;line-height:1.6;margin-bottom:14px;}
.rewrite-goal{margin:-6px 0 14px;font-size:13px;color:var(--muted);}
.rewrite-description{margin:-7px 0 14px;padding-left:10px;border-left:2px solid var(--line);font-size:12.5px;line-height:1.6;color:var(--muted);}
.code-editor{
  display:block;width:100%;min-height:260px;resize:vertical;border:1px solid var(--line);border-radius:3px;
  padding:12px;background:#232A33;color:#F6F4EE;font:13px/1.6 'IBM Plex Mono',monospace;
}
.code-editor:focus{outline:2px solid var(--blue);outline-offset:1px;}
.code-editor:disabled{opacity:.82;cursor:not-allowed;}
.submit-code,.retry-code,.reference-code,.next-code{
  border-radius:3px;padding:10px 14px;font:600 13px 'IBM Plex Sans',sans-serif;cursor:pointer;
}
.submit-code{width:100%;margin-top:12px;background:var(--ink);color:var(--paper);border:1px solid var(--ink);}
.submit-code:hover:not(:disabled){background:#3a4553;}
.submit-code:disabled{opacity:.55;cursor:default;}
.reference-code{width:100%;margin-top:10px;background:#F7F3FB;border:1px solid var(--purple);color:var(--purple);}
.reference-code:hover{background:#EFE6FA;}
.rewrite-feedback{display:none;margin-top:12px;padding:10px 12px;font-size:13px;line-height:1.6;}
.rewrite-feedback.show{display:block;}
.rewrite-feedback.warning{color:#765a17;background:#FAF3E4;border-left:3px solid var(--amber);}
.rewrite-feedback.pending{background:#F7F3FB;border-left:3px solid var(--purple);}
.rewrite-feedback.success{background:#EFF7F1;border-left:3px solid var(--green);}
.rewrite-feedback.needs-practice{background:#FBEEEC;border-left:3px solid var(--red);}
.rewrite-feedback b{color:var(--purple);}
.rewrite-feedback.success b{color:var(--green);}
.rewrite-feedback.needs-practice b{color:var(--red);}
.self-evaluate{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:12px;}
.self-evaluate-title{grid-column:1 / -1;font-size:13px;font-weight:600;}
.self-correct,.self-wrong{border-radius:3px;padding:10px;border:1px solid;font:600 13px 'IBM Plex Sans',sans-serif;cursor:pointer;}
.self-correct{color:var(--green);border-color:var(--green);background:#EFF7F1;}
.self-wrong{color:var(--red);border-color:var(--red);background:#FBEEEC;}
.self-correct:hover{background:#DDEFE2;}
.self-wrong:hover{background:#F7DEDA;}
.rewrite-actions{display:flex;gap:8px;margin-top:12px;}
.retry-code{flex:1;background:#fff;border:1px solid var(--purple);color:var(--purple);}
.next-code{flex:1;background:transparent;border:1px dashed var(--muted);color:var(--muted);}
.retry-code:hover{background:#F7F3FB;}
.next-code:hover{color:var(--blue);border-color:var(--blue);}
.reference-answer{margin-top:14px;border:1px solid var(--line);background:#fff;}
.reference-title{padding:8px 10px;font-size:12px;font-weight:600;color:var(--purple);background:#F7F3FB;border-bottom:1px solid var(--line);}
.reference-answer pre{overflow:auto;margin:0;padding:12px;background:#232A33;color:#F6F4EE;font:12px/1.55 'IBM Plex Mono',monospace;}

/* —— frameworks cheat-sheet —— */
.fw-intro{
  font-size:13px;
  color:var(--muted);
  margin:0 0 12px;
  line-height:1.5;
}
.fw-list{display:grid;gap:8px;}
.fw-item{
  display:flex;
  align-items:center;
  gap:12px;
  width:100%;
  text-align:left;
  background:#fff;
  border:1px solid var(--line);
  border-radius:3px;
  padding:11px 14px;
  font-family:'IBM Plex Sans',sans-serif;
  cursor:pointer;
  box-shadow:1px 1px 0 var(--line);
  transition:transform .08s ease;
}
.fw-item:hover{border-color:var(--blue);}
.fw-item:active{transform:scale(0.99);}
.fw-item.open{border-color:var(--purple);background:#F7F3FB;}
.fw-idx{
  font-family:'IBM Plex Mono',monospace;
  font-size:12px;
  color:var(--muted);
  min-width:1.5em;
}
.fw-names{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px;}
.fw-en{font-size:14px;font-weight:500;color:var(--ink);}
.fw-zh{font-size:12px;color:var(--muted);}
.fw-meta{display:flex;flex-direction:column;align-items:flex-end;gap:2px;flex-shrink:0;}
.fw-stars{
  font-size:12px;
  color:var(--amber);
  letter-spacing:1px;
  font-family:'IBM Plex Mono',monospace;
}
.fw-diff{
  font-size:11px;
  color:var(--muted);
  font-family:'IBM Plex Mono',monospace;
}

.fw-detail{margin-top:4px;}
.fw-detail-card{
  position:relative;
  background:var(--paper2);
  border:1px solid var(--line);
  border-radius:2px;
  padding:28px 22px 22px;
  box-shadow:3px 4px 0 var(--line);
  transform:rotate(-0.3deg);
}
.fw-back{
  background:none;
  border:none;
  color:var(--muted);
  text-decoration:underline;
  cursor:pointer;
  font-size:12px;
  font-family:inherit;
  padding:0;
  margin-bottom:10px;
}
.fw-back:hover{color:var(--blue);}
.fw-detail-title{
  font-family:'Kalam',cursive;
  font-weight:700;
  font-size:24px;
  margin:0 0 6px;
  color:var(--ink);
}
.fw-detail-zh{
  font-family:'IBM Plex Sans',sans-serif;
  font-weight:500;
  font-size:14px;
  color:var(--muted);
  margin-left:10px;
}
.fw-detail-meta{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:12px;
}
.fw-cue{
  font-size:13.5px;
  line-height:1.6;
  color:var(--ink);
  margin:0 0 16px;
  padding-bottom:14px;
  border-bottom:1px dashed var(--line);
}
.fw-rewrite-link{
  width:100%;margin:0 0 16px;padding:10px 12px;background:#F7F3FB;border:1px solid var(--purple);
  border-radius:3px;color:var(--purple);font:600 13px 'IBM Plex Sans',sans-serif;cursor:pointer;
}
.fw-rewrite-link:hover{background:#EFE6FA;}
.fw-snippet{margin-bottom:14px;}
.fw-snippet:last-child{margin-bottom:0;}
.fw-code-title{
  font-size:12px;
  color:var(--purple);
  font-weight:600;
  margin-bottom:6px;
}
.fw-code{
  margin:0;
  padding:14px 16px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:3px;
  overflow-x:auto;
  box-shadow:inset 0 0 0 1px rgba(0,0,0,0.02);
}
.fw-code code{
  font-family:'IBM Plex Mono',monospace;
  font-size:12.5px;
  line-height:1.65;
  color:var(--ink);
  white-space:pre;
}

/* —— responsive canvas: desktop / tablet / phone —— */
@media(min-width:1024px){
  header{margin-bottom:24px;gap:16px 32px;}
  .tabs{margin-bottom:22px;}
  .tab{padding:13px 18px;font-size:18px;}
  .controls{margin-bottom:18px;}
  .round-intro,.round-summary,.card{padding:40px 42px 34px;}
  .round-intro h2,.round-summary h2{font-size:30px;}
  .prompt{font-size:18px;min-height:82px;max-width:900px;}
  .options{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;}
  .opt{padding:14px 16px;font-size:15px;}
  .why{font-size:14px;}
  .rewrite-card,.fw-detail-card{padding:38px 40px 34px;}
  .code-editor{min-height:360px;font-size:14px;}
  .fw-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;}
  .fw-item{padding:14px 16px;}
  .fw-en{font-size:15px;}
}

@media(min-width:701px) and (max-width:1023px){
  .wrap{max-width:900px;}
  .round-intro,.round-summary,.card{padding-left:clamp(28px,5vw,40px);padding-right:clamp(28px,5vw,40px);}
  .rewrite-card,.fw-detail-card{padding-left:clamp(26px,4vw,36px);padding-right:clamp(26px,4vw,36px);}
  .code-editor{min-height:320px;}
}

@media(max-width:700px){
  body{padding-left:14px;padding-right:14px;}
  .wrap{max-width:none;}
  .tabs{overflow-x:auto;scrollbar-width:thin;}
  .tab{min-width:max-content;padding-left:10px;padding-right:10px;}
  .round-intro,.round-summary,.card{padding-left:20px;padding-right:20px;transform:none;}
  .rewrite-card,.fw-detail-card{padding-left:18px;padding-right:18px;transform:none;}
  .round-progress-head{margin-right:68px;}
  .prompt{font-size:15px;line-height:1.65;}
  .code-editor{min-height:50vh;}
  .about-card{padding:32px 20px 28px;box-shadow:2px 3px 0 var(--line);}
  .about-card h2{margin-bottom:18px;}
  .about-card p{font-size:14px;line-height:1.75;}
}

@media(max-width:430px){
  .round-end-actions,.self-evaluate,.rewrite-actions{grid-template-columns:1fr;display:grid;}
  .round-progress-head{align-items:flex-start;flex-direction:column;margin-right:62px;}
  .round-progress-track{width:100%;flex:none;}
  .feedback-dialog{width:calc(100% - 20px);}
}