@font-face { font-family:Roboto; font-style:normal; font-weight:100 900; font-display:swap; src:url("./fonts/Roboto.ttf") format("truetype"); }
.questionnaire { box-sizing:border-box; max-width:1120px; margin:0 auto; padding:32px 24px 80px; color:#202020; font:16px/1.5 Roboto,Arial,sans-serif; background:#fff; }
.questionnaire * { box-sizing:border-box; }
.paper-heading { flex-wrap:wrap; display:flex; align-items:center; justify-content:space-between; gap:20px; }
.paper-heading-actions { display:flex; flex-wrap:wrap; gap:10px; }
.paper-heading h1 { font:600 28px/1.2 Roboto,Arial,sans-serif; margin:0; }
.paper-button { border:1px solid #737373; background:white; color:#202020; padding:9px 16px; border-radius:5px; cursor:pointer; font:inherit; }
.paper-button:disabled { opacity:.4; cursor:default; }
.questionnaire button:focus-visible { outline:3px solid #2263a8; outline-offset:3px; }
.paper-summary { color:#555; margin:20px 0; }
.paper-sheet { display:grid; gap:34px; }
/* Newspaper-style flow reads down the left column, then down the right.
   Independent question heights preserve writing space without aligned rows. */
.paper-grid { display:block; columns:2; column-gap:68px; column-rule:2px dotted #666; }
.paper-grid .paper-question { break-inside:avoid; margin:0 0 54px; }
.paper-grid .paper-question-body { min-height:300px; padding:22px 12px 24px 30px; }
.paper-grid .paper-band { height:26px; }
.paper-grid .paper-number { height:26px; min-width:38px; font:22px/1 Roboto,Arial,sans-serif; }
.paper-grid .paper-prompt { font-size:23px; }
.paper-grid .paper-choice { font-size:22px; padding:5px 0; }
.paper-question { min-width:0; break-inside:avoid; }
.paper-question[hidden],.paper-navigation[hidden] { display:none; }
.paper-band { height:34px; background:#cececc; }
.paper-number { display:inline-grid; place-items:center; background:#202020; color:white; min-width:50px; height:34px; font:21px/1 Roboto,Arial,sans-serif; }
.paper-question-body { padding:24px 20px 8px 50px; }
.paper-prompt { font:26px/1.6 Roboto,Arial,sans-serif; font-variant-numeric:lining-nums; overflow-wrap:anywhere; padding:3px 0 12px; }
.paper-instruction { font:20px/1.5 Roboto,Arial,sans-serif; margin:0 0 10px; }
.paper-math .katex { font-size:1em; }
.paper-choices { border:0; padding:0; margin:8px 0; min-width:0; }
.paper-choice { display:flex; gap:14px; align-items:baseline; padding:8px 0; cursor:pointer; font:24px/1.5 Roboto,Arial,sans-serif; }
.paper-choice input { width:18px; height:18px; accent-color:#202020; flex:none; }
.paper-choice-letter { min-width:32px; }
.paper-choice .paper-math { min-width:0; overflow-wrap:anywhere; }
.paper-math .katex { white-space:normal; }
.paper-math .katex .base { white-space:nowrap; }
.paper-tags { display:flex; flex-wrap:wrap; gap:6px; margin:8px 0; }
.paper-tag { font-size:12px; padding:3px 9px; border:1px solid #bbb; border-radius:20px; }
.paper-source { font-size:13px; color:#666; }
.paper-feedback { font:15px Roboto,Arial,sans-serif; min-height:20px; }
.paper-feedback[data-correct=true] { color:#22653a; }
.paper-feedback[data-correct=false],.paper-error { color:#9b3026; }
.questionnaire .answer-entry-row { margin:12px 0; max-width:500px; }
.questionnaire math-field { display:block; min-height:56px; width:100%; padding:9px 12px; border:1px solid #888; border-radius:4px; font-size:24px; background:white; }
.paper-navigation { display:flex; align-items:center; justify-content:space-between; gap:12px; margin:20px 0; }
.paper-dots { display:flex; flex-wrap:wrap; justify-content:center; gap:8px; }
.paper-dot { border:1px solid #aaa; background:white; width:30px; height:30px; border-radius:50%; cursor:pointer; color:#333; }
.paper-dot.answered { background:#e1ebdf; }
.paper-dot[aria-current=step] { outline:2px solid #222; outline-offset:2px; }
.paper-written-answer { display:none; }
@media(max-width:650px) { .questionnaire { padding:22px 14px 60px; } .paper-grid { columns:1; column-rule:0; } .paper-grid .paper-question-body { min-height:220px; padding-left:12px; } .paper-question-body { padding-left:12px; padding-right:4px; } .paper-prompt { font-size:23px; } .paper-heading h1 { font-size:23px; } }
@media print { @page { margin:16mm; } body { background:white!important; } .questionnaire { max-width:none; padding:0; } .paper-question[hidden] { display:block!important; } .paper-button,.paper-navigation,.paper-summary,.paper-feedback,.answer-entry-row,.ML__keyboard { display:none!important; } .paper-written-answer { display:block; height:40px; border-bottom:1px solid #777; max-width:260px; margin:15px 0; } .paper-heading { margin-bottom:25px; } .paper-choice input { display:none; } .paper-band,.paper-number { print-color-adjust:exact; -webkit-print-color-adjust:exact; } .paper-prompt { overflow:visible; font-size:21px; } .paper-question-body { padding-top:18px; } .paper-choice { font-size:21px; } }

@media print {
  .paper-grid { columns:2; column-gap:12mm; column-rule:1px dotted #555; }
  .paper-grid .paper-question { margin-bottom:10mm; }
  .paper-grid .paper-question-body { min-height:48mm; padding:5mm 2mm 5mm 5mm; }
  .paper-grid .paper-prompt,.paper-grid .paper-choice { font-size:15px; }
  .paper-grid .paper-instruction { font-size:14px; }
  .paper-grid .paper-band,.paper-grid .paper-number { height:20px; }
  .paper-grid .paper-number { font-size:17px; min-width:28px; }
  .questionnaire-grid .paper-heading { margin-bottom:8mm; }
}

/* Share the exact question from the trailing end of its number band. */
.paper-band { display:flex; align-items:center; justify-content:space-between; }
.paper-band > .question-share-actions { margin:0; flex:none; }
.paper-band > .question-share-actions { height:100%; padding:2px; align-items:center; }
.paper-band .copy-question-button { width:30px; height:30px; max-height:100%; padding:4px; border-radius:5px; }
.paper-grid .paper-band .copy-question-button { width:22px; height:22px; padding:2px; }
.paper-band .copy-question-button svg { width:20px; height:20px; max-width:100%; max-height:100%; }
.questionnaire .paper-band .copy-question-button:focus-visible { outline:2px solid #2263a8; outline-offset:-2px; }

.paper-layout-options { display:inline-flex; margin-left:auto; border:1px solid #b8c1c8; border-radius:8px; padding:2px; gap:2px; background:#f3f5f6; }
.paper-layout-button { display:grid; place-items:center; width:40px; height:36px; padding:7px; border:0; border-radius:5px; background:transparent; color:#42515d; cursor:pointer; }
.paper-layout-button svg { width:22px; height:22px; }
.paper-layout-button[aria-pressed=true] { background:#183b56; color:white; }
.paper-layout-button:hover:not([aria-pressed=true]) { background:#e0e5e9; }
.paper-layout-button[hidden] { display:none; }
.questionnaire .paper-layout-button:focus-visible { outline:2px solid #2263a8; outline-offset:-2px; }
@media(max-width:650px) { .paper-heading-with-layout { column-gap:8px; row-gap:14px; } .paper-heading-with-layout h1 { flex:1; } .paper-layout-button { width:36px; } }
@media print { .paper-layout-options { display:none!important; } }

/* Pin the progress bar itself to the viewport centre; its label sits above it. */
.questionnaire.paper-loading { position:fixed; inset:0; display:grid; place-items:center; width:100%; max-width:none; margin:0; padding:24px; background:white; }
.paper-loading-progress { position:relative; width:min(280px, 75vw); }
.paper-loading-label { position:absolute; left:50%; bottom:100%; transform:translateX(-50%); width:min(420px, 88vw); margin:0 0 12px; text-align:center; font:400 13px/1.5 Roboto,Arial,sans-serif; color:#53616d; }
.paper-progress-track { height:6px; overflow:hidden; border-radius:999px; background:#e6ebef; }
.paper-progress-fill { width:0; height:100%; border-radius:inherit; background:#183b56; transition:width .2s ease; }
@media(prefers-reduced-motion:reduce) { .paper-progress-fill { transition:none; } }

/* The PSAT toolbar stays available while the paper scrolls. */
.questionnaire-with-toolbar { padding-top:80px; }
.paper-heading-with-layout { position:fixed; inset:0 0 auto; z-index:100; min-height:64px; padding:10px 24px; flex-wrap:nowrap; gap:16px; background:var(--psat-primary); color:white; box-shadow:0 1px 0 #00000012; }
.paper-brand { display:flex; align-items:center; gap:10px; min-width:0; }
.paper-brand-icon { display:block; flex:none; border:1px solid #fff; border-radius:7px; }
.paper-heading-with-layout h1 { font-size:19px; white-space:nowrap; }
.paper-heading-with-layout .paper-heading-actions { align-items:center; flex-wrap:nowrap; gap:10px; margin-left:auto; }
.paper-heading-with-layout .paper-button { display:inline-flex; align-items:center; justify-content:center; gap:7px; height:40px; padding:7px 12px; border-color:#ffffff70; color:white; background:transparent; font-size:14px; }
.paper-heading-with-layout .paper-button svg { width:20px; height:20px; flex:none; }
.paper-heading-with-layout .paper-button:hover { background:#ffffff20; }
.paper-heading-with-layout .paper-layout-options { margin:0; background:#00000012; border-color:#ffffff70; }
.paper-heading-with-layout .paper-layout-button { color:white; }
.paper-heading-with-layout .paper-layout-button[aria-pressed=true] { color:var(--psat-primary); background:white; }
.paper-heading-with-layout .paper-layout-button:hover:not([aria-pressed=true]) { background:#ffffff20; }
.questionnaire .paper-heading-with-layout button:focus-visible { outline:2px solid white; outline-offset:-3px; }
.paper-question { scroll-margin-top:80px; }
@media(max-width:650px) {
  .questionnaire-with-toolbar { padding-top:70px; }
  .paper-heading-with-layout { min-height:60px; padding:9px 12px; gap:8px; }
  .paper-heading-with-layout h1 { font-size:17px; }
  .paper-brand { gap:7px; }
  .paper-brand-icon { width:28px; height:28px; }
  .paper-title-detail,.paper-action-label { display:none; }
  .paper-heading-with-layout .paper-heading-actions { gap:6px; }
  .paper-heading-with-layout .paper-button { width:36px; height:40px; padding:7px; }
}
@media print {
  .paper-heading-with-layout { position:static; display:flex!important; justify-content:center; min-height:0; padding:0 0 12px; margin-bottom:25px; background:white; color:#183b56; box-shadow:none; border-bottom:1px solid #bbb; break-after:avoid; }
  .paper-heading-with-layout .paper-brand { justify-content:center; width:100%; }
  .paper-heading-with-layout h1 { text-align:center; font-size:19px; }
  .paper-heading-with-layout .paper-title-detail { display:inline; }
  .paper-heading-with-layout .paper-brand-icon,.paper-heading-with-layout .paper-heading-actions { display:none!important; }
  .questionnaire-with-toolbar { padding:0; }
}

/* PSAT chrome shares the icon's navy/teal palette. */
.questionnaire { --psat-primary:#183b56; --psat-accent:#65d6c2; }
.questionnaire-with-toolbar { padding-bottom:120px; }
.paper-footer { position:fixed; inset:auto 0 0; z-index:100; display:flex; align-items:center; gap:24px; padding:10px 24px calc(10px + env(safe-area-inset-bottom)); background:var(--psat-primary); color:white; }
.paper-footer .paper-summary { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip-path:inset(50%); white-space:nowrap; }
.paper-footer .paper-navigation { flex:0 1 auto; width:max-content; max-width:100%; min-width:0; margin:0 auto; gap:12px; }
.paper-footer .paper-dots { position:relative; flex:0 1 auto; min-width:0; flex-wrap:nowrap; justify-content:flex-start; overflow-x:auto; overscroll-behavior-x:contain; padding:5px; scrollbar-width:thin; scrollbar-color:#ffffff70 transparent; }
.paper-footer .paper-dot { flex:none; width:34px; height:34px; background:transparent; color:white; border-color:#ffffff70; }
.paper-footer .paper-dot.answered { border-color:var(--psat-accent); color:var(--psat-accent); }
.paper-footer .paper-dot[aria-current=step] { background:white; color:var(--psat-primary); outline:2px solid var(--psat-accent); outline-offset:1px; }
.paper-footer .paper-button { flex:none; height:40px; padding:7px 12px; font-size:14px; background:transparent; color:white; border-color:#ffffff70; }
.paper-footer .paper-button:hover:not(:disabled) { background:#ffffff20; }
.questionnaire .paper-footer button:focus-visible { outline:2px solid var(--psat-accent); outline-offset:-2px; }
.paper-question { scroll-margin-bottom:120px; }
@media(max-width:650px) {
  .paper-footer { flex-direction:column; align-items:stretch; gap:3px; padding:7px 12px calc(7px + env(safe-area-inset-bottom)); }
  .paper-footer .paper-summary { font-size:12px; text-align:center; }
  .paper-footer .paper-navigation { gap:8px; }
  .paper-footer .paper-button { padding:7px 9px; }
}
@media print { .paper-footer { display:none!important; } .questionnaire-with-toolbar { padding:0; } }

.paper-answer-panel { padding-top:12px; }
.paper-answer-panel[hidden] { display:none!important; }
.paper-footer .paper-chevron { display:grid; place-items:center; width:40px; padding:7px; border:0; }
.paper-chevron svg { width:22px; height:22px; stroke-width:2.8; }
.paper-heading-with-layout .paper-answer-toggle { width:40px; padding:7px; }
@media(max-width:650px) {
  .paper-heading-with-layout .paper-heading-actions { gap:4px; }
  .paper-heading-with-layout .paper-answer-toggle { width:34px; }
}

/* Native radios keep single selection and keyboard navigation; letters are the visible control. */
@media screen {
  .paper-choice { position:relative; }
  .paper-choice input { position:absolute; left:0; top:8px; width:40px; height:36px; margin:0; opacity:0; cursor:pointer; }
  .paper-grid .paper-choice input { top:5px; }
  .paper-choice-letter { display:inline-flex; align-items:center; justify-content:center; flex:none; width:40px; height:36px; border:1px solid var(--psat-primary); border-radius:7px; background:white; color:var(--psat-primary); font:500 18px/1 Roboto,Arial,sans-serif; }
  .paper-choice input:checked + .paper-choice-letter { color:white; background:var(--psat-primary); }
  .paper-choice input:focus-visible + .paper-choice-letter { outline:2px solid var(--psat-accent); outline-offset:3px; }
}
@media print { .paper-choice-letter::after { content:')'; } }

@media print {
  @page {
    @top-left { content:none; }
    @top-center { content:none; }
    @top-right { content:none; }
    @bottom-left { content:none; }
    @bottom-center { content:counter(page); font:11px Roboto,Arial,sans-serif; color:#555; }
    @bottom-right { content:none; }
  }
}

.paper-band > .question-share-actions[hidden] { display:none!important; }
.paper-heading-with-layout .paper-share-toggle { width:40px; padding:7px; }
.paper-heading-with-layout .paper-share-toggle[aria-pressed=true] { background:white; color:var(--psat-primary); }
@media(max-width:380px) {
  .paper-heading-with-layout { padding-inline:8px; gap:6px; }
  .paper-brand { gap:5px; }
  .paper-brand-icon { width:24px; height:24px; }
  .paper-heading-with-layout h1 { font-size:16px; }
  .paper-heading-with-layout .paper-heading-actions { gap:3px; }
  .paper-heading-with-layout .paper-button { width:30px; padding:5px; }
  .paper-heading-with-layout .paper-layout-button { width:30px; padding:5px; }
}

/* Teaching uses the PSAT shell and the Quode's exact generated solution data. */
.paper-teach .paper-answer-panel,.paper-teach .paper-feedback,.paper-teach .question-solution-actions,
.paper-teach .paper-answer-toggle,.paper-teach [aria-label="Submit paper"] { display:none!important; }
.paper-teach-host[hidden],.paper-teaching > [hidden],.paper-teaching-options[hidden] { display:none!important; }
.paper-heading-with-layout .paper-mode-toggle { width:36px; padding:6px; }
.paper-mode-toggle[aria-pressed=true] { background:white!important; color:var(--psat-primary)!important; }
.paper-teach .paper-heading-with-layout { flex-wrap:wrap; row-gap:6px; }
.paper-teaching-options { display:flex; flex-basis:100%; justify-content:center; gap:3px; }
.paper-teaching-options .paper-button { display:grid; place-items:center; width:40px; height:34px; padding:6px; border:1px solid #ffffff70; color:white; background:transparent; }
.paper-teaching-options svg { width:20px; height:20px; }
.paper-teaching-options [aria-pressed=true] { background:white; color:var(--psat-primary); }
.questionnaire.paper-teach { padding-top:125px; }
.paper-teach .paper-question { scroll-margin-top:125px; }
.paper-teach-simulation .paper-layout-options { display:none; }
.paper-teaching { margin-top:20px; }
.teach-step { display:flex; gap:16px; padding:18px 0; border-bottom:0; }
.teach-step-number { flex:none; font-size:14px; color:#607486; }
.teach-step-copy { min-width:0; flex:1; }
.teach-intent { margin:0 0 8px; font-weight:600; }
.teach-hint { margin:0 0 12px; color:#53616d; font-size:14px; }
.teach-step .paper-math { font-size:22px; }
.teach-writing-line { width:min(100%,320px); height:44px; border-bottom:1px solid #183b56; }
.teach-example { display:flex; align-items:baseline; gap:6px; margin-top:8px; color:#667785; font-size:12px; }
.teach-example .paper-math { font-size:14px; }
.teach-final,.teach-answer-key { margin-top:24px; }
.teach-answer-key summary { cursor:pointer; }
.conversion-simulation { display:grid; grid-template-columns:1fr 1fr; gap:24px; align-items:center; }
.conversion-target { grid-column:1/-1; margin:0; text-align:center; color:var(--psat-primary); font-size:18px; }
.conversion-controls { text-align:center; }
.conversion-rule { color:#5f707e; font-size:15px; margin:0 0 12px; }
.conversion-equation { font-size:clamp(25px,2.7vw,38px); font-weight:750; line-height:1.35; }
.conversion-count { color:#bc303c; font-weight:700; }
.conversion-total { color:#1765bc; }
.conversion-buttons { display:flex; justify-content:center; gap:16px; margin-top:24px; }
.conversion-buttons button { display:grid; place-items:center; width:48px; height:48px; border:2px solid var(--psat-primary); border-radius:50%; color:var(--psat-primary); background:white; cursor:pointer; font:500 32px/1 Roboto,Arial,sans-serif; }
.conversion-buttons button:disabled { opacity:.3; cursor:default; }
.conversion-complete { min-height:28px; margin:16px 0 0; color:#16705e; font-weight:650; }
.conversion-stage { display:flex; justify-content:center; align-items:flex-end; min-height:470px; padding:12px 0; border-bottom:3px solid #183b56; }
.conversion-stack { display:flex; flex-direction:column-reverse; width:min(260px,90%); gap:3px; }
.conversion-slab { flex:none; display:flex; justify-content:center; align-items:center; min-height:22px; background:var(--psat-primary); border:1px solid var(--psat-primary); border-radius:3px; color:#f4f8fc; font:500 12px/1.4 Roboto,Arial,sans-serif; box-shadow:none; }
.conversion-slab:last-child { animation:slab-in .18s ease-out; }
.conversion-partial { align-self:center; min-width:100px; border-style:dashed; }
.conversion-grouped { text-align:center; font-size:12px; color:#53616d; }
@keyframes slab-in { from { opacity:0; transform:translateY(-9px); } to { opacity:1; transform:translateY(0); } }
@media(max-width:650px) {
  .paper-heading-with-layout .paper-heading-actions { gap:3px; }
  .paper-heading-with-layout .paper-button { width:30px; padding:5px; }
  .paper-heading-with-layout .paper-layout-button { width:30px; padding:5px; }
  .paper-heading-with-layout { padding-inline:8px; gap:6px; }
  .paper-brand { gap:5px; }
  .paper-brand-icon { width:24px; height:24px; }
  .paper-heading-with-layout h1 { font-size:16px; }
  .conversion-simulation { display:flex; flex-direction:column; gap:12px; padding-bottom:210px; }
  .conversion-target { font-size:15px; }
  .conversion-stage { width:100%; min-height:300px; }
  .conversion-controls { position:fixed; z-index:90; bottom:calc(65px + env(safe-area-inset-bottom)); left:0; right:0; padding:12px 10px; background:white; box-shadow:0 -1px 8px #183b5615; }
  .conversion-equation { font-size:26px; }
  .conversion-rule { margin-bottom:6px; font-size:13px; }
  .conversion-buttons { margin-top:12px; }
  .conversion-buttons button { width:40px; height:40px; font-size:27px; }
  .conversion-complete { margin-top:8px; min-height:0; font-size:14px; }
}
@media(prefers-reduced-motion:reduce) { .conversion-slab:last-child { animation:none; } }
@media print {
  .paper-teaching-options { display:none!important; }
  .questionnaire.paper-teach { padding:0; }
  .conversion-controls { position:static; box-shadow:none; padding:0; }
  .conversion-buttons { display:none; }
  .conversion-simulation { display:grid; padding:0; }
  .conversion-stage { min-height:0; }
  .conversion-slab { print-color-adjust:exact; }
  .teach-step { break-inside:avoid; }
  .teach-answer-key { break-before:page; }
  .teach-answer-key::details-content { content-visibility:visible; }
}

.conversion-stage { height:clamp(220px,calc(100dvh - 395px),500px); min-height:0; }
.conversion-stack { height:min(100%,calc(var(--slab-count,1) * 26px)); }
.conversion-slab { flex:1 1 0; min-height:0; font-size:11px; }
@media(max-width:650px) {
  .conversion-stage { height:clamp(210px,calc(100dvh - 510px),420px); min-height:0; }
}
@media(max-width:380px) {
  .paper-heading-with-layout .paper-button,.paper-heading-with-layout .paper-layout-button { width:28px; }
}
@media print { .conversion-stage { height:auto; min-height:100px; } .conversion-stack { height:auto; } .conversion-slab { min-height:20px; } }

.conversion-stack { gap:2px; }
@media(max-width:650px) { .conversion-slab { font-size:10px; line-height:1; } }

/* A teaching link presents one question, with one compact toolbar. */
.paper-teach .paper-heading-with-layout { flex-wrap:nowrap; }
.paper-teach .paper-brand,.paper-teach .paper-band,.paper-teach .paper-footer,
.paper-teach .paper-layout-options,.paper-teach .paper-mode-toggle,.paper-teach .paper-share-toggle,
.paper-teach .teach-solution > h3,.paper-teach .teach-workbook > h3 { display:none!important; }
.paper-teach .paper-teaching-options { flex-basis:auto; flex:none; }
.paper-teach .paper-teaching-options .paper-button { height:40px; }
.paper-teaching-options .paper-button[hidden],.paper-teach-share[hidden],.paper-heading-actions > .paper-button[hidden] { display:none!important; }
.paper-teach-share { display:flex; flex:none; }
.paper-teach-share .question-share-actions { margin:0; }
.paper-teach-share .copy-question-button { display:grid; place-items:center; width:40px; height:40px; padding:7px; border:1px solid #ffffff70; border-radius:5px; background:white; color:var(--psat-primary); }
.paper-teach-share .copy-question-button svg { width:22px; height:22px; }
.questionnaire.paper-teach { padding-top:80px; padding-bottom:30px; }
.paper-teach .paper-question { scroll-margin-top:80px; }
.paper-teach .paper-question-body { padding-top:12px; }
@media(max-width:650px) {
  .questionnaire.paper-teach { padding-top:70px; }
  .paper-teach .conversion-controls { bottom:0; padding-bottom:calc(12px + env(safe-area-inset-bottom)); }
  .paper-teach .paper-heading-actions { gap:6px; }
  .paper-teach .paper-teaching-options .paper-button { width:36px; }
}
@media print {
  .paper-teach .paper-heading-with-layout { display:none!important; }
  .paper-teach .paper-question[hidden] { display:none!important; }
  .questionnaire.paper-teach { padding:0; }
  .paper-teach .conversion-controls { position:static; }
}
.paper-teach .paper-teaching-options .paper-button[aria-pressed=true] { background:white; color:var(--psat-primary); }

/* Teacher-pack working goes on the left, guidance on the right. */
.paper-teaching .teach-step { display:grid; grid-template-columns:minmax(0, 42fr) minmax(0, 58fr); align-items:center; gap:28px; min-height:155px; padding:26px 16px; border-bottom:0; }
.teach-working { min-width:0; }
.paper-teaching .teach-writing-line { width:100%; max-width:none; height:48px; border-bottom:2px solid #455f70; }
.paper-teaching .teach-example { margin:8px 0 0 6px; color:#b83240; font-size:16px; line-height:1.3; }
.paper-teaching .teach-example .paper-math { font-size:18px; }
.paper-teaching .teach-intent { color:var(--psat-primary); font-size:19px; font-weight:700; line-height:1.45; margin:0 0 8px; }
.paper-teaching .teach-hint { color:#137e8c; font-size:18px; font-weight:600; line-height:1.45; margin:0; }
.paper-teaching .teach-working > .paper-math { color:var(--psat-primary); font-size:25px; }
.paper-teach .paper-teach-share .copy-question-button:hover { background:white; color:var(--psat-primary); }
.paper-teach .paper-heading-actions .paper-button:hover { background:transparent; color:white; }
.paper-teach .paper-teaching-options .paper-button[aria-pressed=true]:hover { background:white; color:var(--psat-primary); }
@media screen and (max-width:500px) {
  .paper-teaching .teach-step { grid-template-columns:minmax(0,1fr); gap:18px; padding:24px 4px; }
  .paper-teaching .teach-intent { font-size:17px; }
  .paper-teaching .teach-hint { font-size:16px; }
}
@media print {
  .paper-teaching .teach-step { grid-template-columns:minmax(0,42fr) minmax(0,58fr); min-height:100px; gap:20px; padding:18px 8px; print-color-adjust:exact; }
  .paper-teaching .teach-intent,.paper-teaching .teach-hint { font-size:14px; }
  .paper-teaching .teach-example,.paper-teaching .teach-example .paper-math { font-size:13px; }
}

.paper-teaching .teach-solution .teach-step { border-bottom:0; }
.paper-teaching .teach-workbook .teach-step { border-bottom:0; }

.conversion-stack-area { min-width:0; width:100%; }
.conversion-stack-area .conversion-target { margin:16px 0 0; font-size:24px; font-weight:650; line-height:1.35; text-align:center; }
.conversion-buttons button { padding:0; display:flex; align-items:center; justify-content:center; }
.conversion-buttons button svg { display:block; flex:none; width:26px; height:26px; pointer-events:none; }
@media(max-width:650px) {
  .conversion-stack-area .conversion-target { font-size:22px; margin-top:12px; }
  .conversion-buttons button svg { width:24px; height:24px; }
}

.flower-celebration { position: fixed; inset: 0; z-index: 100; overflow: hidden; pointer-events: none; }
.falling-flower {
  position: absolute;
  top: -2rem;
  left: var(--flower-left);
  color: var(--flower-color);
  font-family: Georgia, serif;
  font-size: var(--flower-size);
  line-height: 1;
  animation: flower-fall var(--flower-duration) ease-in var(--flower-delay) both;
}
@keyframes flower-fall {
  0% { opacity: 0; transform: translate3d(0, -2rem, 0) rotate(0deg); }
  12% { opacity: 1; }
  100% { opacity: 1; transform: translate3d(var(--flower-drift), calc(100vh + 4rem), 0) rotate(540deg); }
}

.flower-celebration { z-index:200; }
.conversion-challenge { margin-top:20px; }
.conversion-challenge[hidden],.conversion-answer-tick[hidden] { display:none; }
.conversion-answer-line { display:flex; align-items:center; justify-content:center; flex-wrap:wrap; gap:10px; font-size:24px; font-weight:650; color:var(--psat-primary); }
.conversion-factor-answer { box-sizing:border-box; width:76px; height:48px; border:2px solid var(--psat-primary); border-radius:6px; background:white; color:#bc303c; text-align:center; font:700 25px Roboto,Arial,sans-serif; }
.conversion-factor-answer:focus-visible { outline:2px solid #137e8c; outline-offset:3px; }
.conversion-answer-tick { display:inline-flex; color:#16705e; }
.conversion-answer-tick svg { width:24px; height:24px; }
.conversion-complete { margin:8px 0 0; }
@media(max-width:650px) {
  .conversion-challenge { margin-top:12px; }
  .conversion-answer-line { font-size:20px; gap:8px; }
  .conversion-factor-answer { width:60px; height:42px; font-size:23px; }
}
@media(prefers-reduced-motion:reduce) { .falling-flower { animation:none; display:none; } }
@media print { .flower-celebration { display:none!important; } }

.questionnaire .conversion-factor-answer { display:inline-block; flex:none; width:76px; min-height:48px; height:48px; padding:4px; border:2px solid var(--psat-primary); border-radius:6px; font-size:25px; background:white; }
.questionnaire .conversion-factor-answer[data-keyboard-active="true"] { background:#fff6bf; outline:2px solid var(--psat-primary); outline-offset:2px; }
@media(max-width:650px) {
  .questionnaire .conversion-factor-answer { width:66px; min-height:44px; height:44px; font-size:23px; }
  .paper-teach .conversion-controls:has(.conversion-factor-answer[data-keyboard-active="true"]) { bottom:var(--quode-virtual-keyboard-height,0px); }
}

/* Match the brand tile to the toolbar controls when a title is present. */
.paper-heading-with-layout .paper-brand-icon { box-sizing:border-box; width:40px; height:40px; object-fit:contain; }
.paper-brand[hidden] { display:none!important; }
@media(max-width:650px) { .paper-heading-with-layout .paper-brand-icon { width:32px; height:40px; } }
@media(max-width:380px) { .paper-heading-with-layout .paper-brand-icon { width:28px; height:40px; } }

/* Whole-paper solutions retain numbering and navigation across every question. */
.paper-teach .paper-mode-toggle { display:inline-flex!important; }
.paper-teach.paper-multiple .paper-band { display:flex!important; }
.paper-teach.paper-multiple .paper-footer { display:flex!important; }
.questionnaire.paper-teach.paper-multiple { padding-bottom:100px; }
.paper-teach.paper-multiple .paper-question { margin-bottom:36px; }
@media(max-width:650px) {
  .paper-teach.paper-multiple .conversion-controls { bottom:calc(65px + env(safe-area-inset-bottom)); }
  .paper-teach.paper-multiple .conversion-controls:has(.conversion-factor-answer[data-keyboard-active="true"]) { bottom:calc(65px + var(--quode-virtual-keyboard-height,0px)); }
}
@media print {
  .paper-teach.paper-multiple .paper-footer { display:none!important; }
  .paper-teach:not(.paper-teach-simulation) .paper-question { display:block!important; break-inside:auto; }
  .paper-teach .paper-question-body { break-inside:auto; }
  .paper-teach .teach-step { break-inside:avoid; }
  .paper-teach .paper-band { break-after:avoid; }
}

@media print {
  .questionnaire,.paper-heading h1,.paper-prompt,.paper-instruction,.paper-choice,.paper-choice-letter,.paper-number { font-family:"Times New Roman",Times,serif; }
}
@media screen { .compact-math-keypad,.compact-math-key { font-family:Roboto,Arial,sans-serif; } }

@media screen and (max-width:650px) {
  .paper-heading-with-layout .paper-brand { display:none; }
  .paper-heading-with-layout { --toolbar-icon-size:40px; }
  .questionnaire .paper-heading-with-layout .paper-heading-actions { gap:4px; }
  .questionnaire .paper-heading-with-layout .paper-heading-actions button {
    flex:0 0 var(--toolbar-icon-size); width:var(--toolbar-icon-size); height:var(--toolbar-icon-size);
    min-width:var(--toolbar-icon-size); padding:7px; aspect-ratio:1;
  }
  .paper-heading-with-layout .paper-heading-actions svg { flex-shrink:0; }
}
@media screen and (max-width:380px) {
  .paper-heading-with-layout { --toolbar-icon-size:36px; }
}
@media screen and (max-width:650px) {
  .questionnaire .paper-heading-with-layout .paper-heading-actions { margin-inline:auto; }
}

/* One printable conversion step, using the same equal blocks as the simulation. */
.teach-step.conversion-worked-row { display:grid; grid-template-columns:minmax(0,1fr) minmax(0,1fr); align-items:center; gap:32px; }
.conversion-worked-copy { font-size:19px; line-height:1.5; }
.conversion-worked-hint { color:var(--psat-primary); }
.conversion-worked-conclusion { margin:22px 0; }
.conversion-worked-equation { display:flex; align-items:baseline; flex-wrap:wrap; gap:.25em; font-size:clamp(24px,2.7vw,34px); font-weight:700; }
.conversion-worked-blank.teach-writing-line { display:inline-block; width:6ch; height:1.2em; border-bottom:2px solid currentColor; }
.conversion-worked-answer { color:var(--psat-primary); font-weight:600; }
.conversion-worked-example { color:#137e8c; font-size:16px; margin-top:24px; }
.conversion-worked-figure { margin:0; min-width:0; }
.conversion-worked-stack { display:flex; flex-direction:column-reverse; gap:2px; align-items:center; }
.conversion-worked-brick { width:85%; padding:3px 6px; text-align:center; border:1px solid var(--psat-primary); border-radius:3px; background:var(--psat-primary); color:#fff; font-size:13px; line-height:1.2; }
.conversion-worked-figure figcaption { margin-top:12px; color:var(--psat-primary); font-size:18px; font-weight:600; text-align:center; }
@media screen and (max-width:650px) {
  .teach-step.conversion-worked-row { grid-template-columns:1fr; gap:24px; }
}
@media print {
  .teach-step.conversion-worked-row { grid-template-columns:1fr 1fr; gap:7mm; break-inside:avoid; }
  .conversion-worked-copy { font-size:12pt; }
  .conversion-worked-equation { font-size:20pt; }
  .conversion-worked-example,.conversion-worked-figure figcaption { font-size:11pt; }
  .conversion-worked-brick { font-size:9pt; padding:1mm; }
  .conversion-worked-row { print-color-adjust:exact; -webkit-print-color-adjust:exact; }
}

/* Keep measurement quantities bold on screen and on printed teaching sheets. */
.conversion-quantity { font-weight:700; }

/* Alternating dark blocks retain light labels on screen and paper. */
.conversion-slab,.conversion-worked-brick { background:#183b56; border-color:#183b56; color:#fff; print-color-adjust:exact; -webkit-print-color-adjust:exact; }
.conversion-slab:nth-child(even),.conversion-worked-brick:nth-child(even) { background:#245b55; border-color:#245b55; }
.conversion-worked-copy .conversion-quantity { font-weight:700; }