/* Shared workbook design. Grammar colors keep their existing meanings. */
:root {
  --bg: #f6f3ed;
  --text: #292a25;
  --text-muted: #676b62;
  --accent: #c44925;
  --accent-dark: #a83b1e;
  --accent-hover: #a83b1e;
  --accent-light: #faece4;
  --border: #e3e3d9;
  --warm-muted: #706f63;
  --unit-head: #706f63;
  --workbook-sage: #edf1e7;
  --workbook-sage-border: #d9e1cf;
  --workbook-ink: #354c3e;
  --workbook-soft: #fafbf7;
  --shadow: 0 4px 24px rgba(41, 42, 37, .035);
  /* Embed the mask so local file previews do not need a cross-origin image request. */
  --speaker-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.7' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M11 5 6 9H3v6h3l5 4V5Z'/%3E%3Cpath d='M15 8a6 6 0 0 1 0 8m3-11a10 10 0 0 1 0 14'/%3E%3C/svg%3E");
}

/* Accounts are launched: the Sign in / Account link in every header is
   visible. To hide it again, put back
     [data-role="auth-link"], [data-role="auth-link-mobile"] { display: none !important; }
   and test/accountPages.test.js will say which half is missing. */

html { scroll-behavior: smooth; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, summary:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid var(--workbook-ink);
  outline-offset: 4px;
}
.lesson-wm, .ld-wm { gap: 7px; font-size: 23px; }
.lesson-wm img, .ld-wm img { margin-right: 3px; width: 30px; height: 30px; }
.lesson-topbar, .ld-top { min-height: 84px; }
.lesson-chip, .ld-chip { color: var(--workbook-ink); background: var(--workbook-sage); padding: 7px 12px; }
.lesson-chip:hover, .ld-chip:hover { color: var(--workbook-ink); background: #e1e8d8; }
.mobile-menu-toggle { background: var(--text); border-radius: 10px; width: 44px; height: 44px; }
.nav-account-avatar { display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid var(--workbook-sage-border); border-radius: 13px; background: var(--workbook-sage); color: var(--workbook-ink); font: 700 17px/1 'Playfair Display', Georgia, serif; }
.nav-account-link:hover .nav-account-avatar, .nav-account-link[aria-current="page"] .nav-account-avatar { border-color: var(--workbook-ink); }
.mobile-menu-link.nav-account-link { padding: 6px 12px; }
.pp-p, .pp-li { overflow-wrap: anywhere; }

.skip-link { position: fixed; top: -100px; left: 16px; z-index: 2000; padding: 10px 20px; background: var(--card); color: var(--text); border-radius: 8px; }
.skip-link:focus { top: 12px; }
/* One header size for every page. The practice app and the about, contact,
   privacy and terms pages carry the same header without .workbook-page, and
   their own stylesheets still size it at the old 1140px. */
.lesson-topbar, .workbook-page .lesson-topbar { max-width: 1240px; padding: 20px 32px; }
/* The landing header is the lesson header: same width, padding, rule and
   phone-menu breakpoint, so the logo and menu stay put between pages. */
.ld-top { max-width: 1240px; margin: 0 auto; padding: 20px 32px; border-bottom-color: var(--border); background: var(--bg); }
@media (max-width: 700px) {
  .mobile-menu .nav-account-avatar { width: 40px; height: 40px; border-radius: 12px; font-size: 16px; }
  .ld-nav .ld-navl, .ld-nav .ld-chip { display: none; }
  .ld-nav .mobile-menu { display: block; }
}
.lesson-layout { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 48px; max-width: 1240px; padding: 36px 32px 0; margin: auto; align-items: start; }
.lesson-sidebar { position: sticky; top: 24px; max-height: calc(100vh - 48px); overflow-y: auto; scrollbar-width: thin; padding: 6px 16px 24px 0; }
.course-eyebrow, .lesson-eyebrow { font-size: 11px; font-weight: 700; letter-spacing: .13em; color: var(--text-muted); }
.course-heading p { font: 700 23px/1.3 'Playfair Display', Georgia, serif; margin: 9px 0 24px; }
.lesson-sidebar .lesson-progress { display: flex; flex-direction: column; align-items: stretch; gap: 10px; padding: 0 0 25px; }
.lesson-sidebar .lesson-progress-label { font-size: 12px; font-weight: 500; }
.lesson-sidebar .lesson-progress-segs { gap: 3px; flex: auto; }
.lesson-sidebar .lesson-progress-seg { height: 4px; }
.lesson-sidebar .lesson-progress-seg.on { background: var(--workbook-ink); }
.lesson-sidebar .lesson-path-area { padding: 0; border: 0; }
.lesson-sidebar .lesson-units { display: block; padding: 0; }
.lesson-sidebar .course-unit { border-top: 1px solid var(--border); padding: 16px 0; }
.lesson-sidebar .lesson-unit-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin: 0; padding: 0; list-style: none; color: var(--text-muted); font-size: 11px; letter-spacing: .045em; cursor: pointer; }
.lesson-unit-head::-webkit-details-marker { display: none; }
.lesson-sidebar .lesson-unit-head::after { content: '+'; font-size: 18px; font-weight: 400; }
.course-unit[open] > .lesson-unit-head::after { content: '−'; }
.lesson-sidebar .lesson-unit-list { margin-top: 12px; gap: 4px; }
.lesson-sidebar .unit-lesson { min-height: 44px; padding: 9px 10px; font-size: 13px; font-weight: 500; background: transparent; border: 0; border-radius: 8px; }
.lesson-sidebar .unit-lesson:hover { background: var(--accent-light); }
.lesson-sidebar .unit-lesson-num { background: transparent; color: var(--text-muted); font-size: 11px; }
.lesson-sidebar .unit-lesson.cur { background: var(--accent-light); color: var(--accent); font-weight: 700; box-shadow: inset 3px 0 var(--accent); }
.lesson-sidebar .unit-lesson.cur .unit-lesson-num { color: var(--accent); background: transparent; }
.lesson-sidebar .unit-lesson.done .unit-lesson-num { background: var(--workbook-sage); color: var(--workbook-ink); }
.course-footnote { padding-top: 18px; border-top: 1px solid var(--border); font-size: 12px; color: var(--text-muted); }
.lesson-sidebar .tab-toggle-btn { display: none; }

.lesson-layout > .lesson-content { width: 100%; min-width: 0; padding: 0 0 32px; margin: 0; max-width: none; }
.lesson-heading { padding: 3px 0 0; }
.lesson-eyebrow { display: flex; align-items: center; gap: 16px; color: var(--workbook-ink); }
.lesson-eyebrow span { padding-left: 16px; border-left: 1px solid var(--border); color: var(--text-muted); font-size: 10px; letter-spacing: .06em; }
.lesson-heading h1 { font: 700 clamp(30px, 3.1vw, 44px)/1.15 'Playfair Display', Georgia, serif; letter-spacing: -.025em; max-width: 740px; margin: 17px 0 12px; text-wrap: balance; }
.lesson-heading-sub { font-size: 14px; color: var(--text-muted); }
.lesson-jump-links { display: flex; gap: 26px; border-bottom: 1px solid var(--border); margin: 27px 0 28px; }
.lesson-jump-links a { display: inline-flex; gap: 9px; align-items: center; color: var(--text-muted); text-decoration: none; padding: 0 0 12px; font-size: 11px; }
.lesson-jump-links a span { font-size: 13px; font-weight: 600; }
.lesson-jump-links .current { color: var(--accent); border-bottom: 2px solid var(--accent); margin-bottom: -1px; }
.lesson-jump-links a:hover { color: var(--accent); }
.workbook-page .card { border-radius: 14px; padding: 30px 32px; margin-bottom: 24px; box-shadow: none; }
.workbook-page .card h2 { font-size: 24px; line-height: 1.3; letter-spacing: -.015em; margin-bottom: 17px; }
.workbook-page .card h3 { font-size: 17px; }
.workbook-page .card .subtitle { font-size: 14px; }
.workbook-page .explain { font-size: 15px; line-height: 1.85; max-width: 700px; margin-bottom: 18px; }
.workbook-page .explain strong { color: inherit; }
.workbook-page .lesson-essential > .explain:first-of-type { background: var(--workbook-sage); border-radius: 9px; padding: 17px 20px; margin: 0 0 22px; color: var(--workbook-ink); }
.workbook-page .lesson-num { background: transparent; padding: 0; font-size: 10px; letter-spacing: .11em; margin-bottom: 10px; }
.workbook-page table { font-size: 14px; line-height: 1.65; }
.workbook-page th { font-size: 11px; line-height: 1.6; letter-spacing: .06em; padding: 12px; background: var(--workbook-soft); border-bottom-width: 1px; }
.workbook-page td { padding: 13px 12px; vertical-align: middle; }
.workbook-page td:first-child { font-weight: 600; }
.workbook-page .table-scroll { overflow-x: auto; }
.workbook-page .table-scroll > .table-wide { table-layout: auto; font-size: 14px; min-width: 640px; }
.workbook-page .table-scroll > .table-wide th, .workbook-page .table-scroll > .table-wide td { padding: 12px; }
.workbook-page .badge { font-size: 11px; padding: 3px 8px; border-radius: 5px; }
.workbook-page .tip { font-size: 14px; line-height: 1.75; background: var(--workbook-sage); color: var(--workbook-ink); border-color: #a6b69b; padding: 16px 20px; }
.workbook-page .tip strong { color: inherit; }
.workbook-page .example-sentence { background: var(--workbook-soft); border: 1px solid var(--border); border-left: 3px solid #b9c4ac; padding: 18px 20px; font-size: 16px; }
.workbook-page .example-sentence .eng { display: block; font-size: 14px; font-style: normal; margin-top: 5px; }
.workbook-page .lesson-mistakes { background: transparent; border-style: dashed; }
.workbook-page .pitfall { background: transparent; border-left: 0; border-bottom: 1px solid var(--border); border-radius: 0; padding: 12px 0 18px; }
.workbook-page .pitfall:last-child { border-bottom: 0; padding-bottom: 0; }
.workbook-page .pitfall-why { font-size: 14px; line-height: 1.75; }

/* A single, recognizable audio control, including generated quiz sentences. */
.play-btn, .ld-spk { width: 34px; height: 34px; min-width: 34px; border-radius: 50%; color: var(--workbook-ink); background: var(--workbook-sage); position: relative; vertical-align: middle; margin-left: 5px; padding: 0; flex-shrink: 0; }
.play-btn img, .ld-spk svg, .exercise-option-play img { display: none; }
.play-btn::before, .ld-spk::before, .exercise-option-play::before { content: ''; display: block; width: 17px; height: 17px; background: currentColor; mask: var(--speaker-icon) center / contain no-repeat; -webkit-mask: var(--speaker-icon) center / contain no-repeat; }
.exercise-option-play { color: var(--workbook-ink); }
.play-btn:hover, .ld-spk:hover, .play-btn.playing, .ld-spk.playing { color: var(--accent); background: var(--accent-light); }
.translation-control { display: inline; font-weight: 400; text-transform: none; letter-spacing: normal; }
.translation-toggle { display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 34px; margin-left: 2px; vertical-align: middle; border: 0; border-radius: 6px; background: transparent; padding: 0; cursor: help; }
.translation-icon { display: block; width: 16px; height: 16px; opacity: .6; }
.translation-toggle:hover .translation-icon, .translation-toggle:focus-visible .translation-icon, .translation-toggle[aria-expanded="true"] .translation-icon { opacity: 1; }
.translation-text { position: fixed; z-index: 1100; display: block; width: max-content; max-width: min(340px, calc(100vw - 24px)); max-height: calc(100vh - 24px); overflow: auto; overflow-wrap: anywhere; padding: 10px 14px; border-radius: 8px; background: var(--text); color: var(--card); box-shadow: 0 4px 16px rgba(0, 0, 0, .16); font: 400 13px/1.65 'DM Sans', sans-serif; text-align: left; white-space: normal; }
.translation-text[hidden] { display: none; }
/* Verb conjugation panel: one line per pronoun, each with its own play button.
   Light-on-dark buttons, sized to the text so eight rows stay compact. */
.conjugation-text { padding: 12px 16px; font-size: 14px; line-height: 1.3; }
.conjugation-text strong { display: inline-block; margin-bottom: 6px; font-size: 15px; }
.conjugation-text .play-btn { width: 30px; height: 30px; min-width: 30px; margin: 2px 0 2px 6px; color: var(--card); background: rgba(255, 255, 255, .14); }
.conjugation-text .play-btn::before { width: 15px; height: 15px; }
.conjugation-text .play-btn:hover, .conjugation-text .play-btn.playing { color: var(--accent); background: var(--accent-light); }
.sentence-variant { display: block; margin-bottom: 9px; }
.sentence-variant:last-child { margin-bottom: 0; }
.lesson-practice-anchor { display: block; }
.workbook-page .lesson-practice { border-top: 3px solid var(--workbook-ink); background: var(--card); }
.workbook-page .lesson-practice > .lesson-num { color: var(--workbook-ink); }
.workbook-page .exercise-shell { border: 0; padding: 22px; background: var(--workbook-soft); }
.workbook-page .exercise-meta .badge { background: transparent; padding: 0; border-radius: 0; font-size: 12px; color: var(--text-muted); }
.workbook-page .exercise-meta .badge:first-child { font-weight: 700; color: var(--workbook-ink); }
.workbook-page .exercise-sentence { background: transparent; border: 0; padding: 14px 0; font-size: 22px; line-height: 1.7; }
.workbook-page .exercise-option { min-height: 52px; font-size: 15px; border-width: 1px; border-radius: 10px; }
.workbook-page .exercise-btn { min-height: 44px; border-radius: 10px; }
.workbook-page .practice-switch-btn { border-radius: 8px; padding: 10px 14px; font-size: 13px; white-space: normal; }
.workbook-page .practice-switch-btn.active { background: var(--workbook-ink); border-color: var(--workbook-ink); }
.workbook-page .exercise-feedback { font-size: 14px; }
.lesson-completion { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; background: var(--workbook-sage); color: var(--workbook-ink); padding: 24px; border-radius: 14px; margin: 24px 0; }
.lesson-completion[hidden] { display: none; }
.lesson-completion .lesson-completion-title { font: 700 24px 'Playfair Display', Georgia, serif; margin-bottom: 5px; }
.lesson-completion p { font-size: 14px; }
.lesson-completion a { margin-left: auto; color: white; background: var(--workbook-ink); border-radius: 10px; padding: 12px 18px; font-size: 13px; font-weight: 600; text-decoration: none; }
/* Visitor survey banner: takes one lesson ad panel while the survey is open
   (js/app.js, SURVEY_PANEL_SLOT). */
.survey-banner { display: flex; align-items: center; gap: 22px; margin: 0 0 24px; padding: 24px 26px; border: 1px solid #dce3d3; border-radius: 14px; background: var(--workbook-sage); color: var(--workbook-ink); }
.survey-banner-copy { flex: 1; min-width: 0; }
.survey-banner-eyebrow { font-size: 10px; font-weight: 700; letter-spacing: .1em; color: var(--workbook-ink); }
.survey-banner-title { margin: 6px 0 4px; font: 700 21px/1.3 'Playfair Display', Georgia, serif; letter-spacing: -.01em; color: var(--text); }
.survey-banner-sub { font-size: 13.5px; line-height: 1.6; color: var(--text-muted); }
.survey-banner-actions { display: flex; flex-direction: column; align-items: stretch; gap: 4px; flex: none; }
.survey-banner-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 20px; border-radius: 10px; background: var(--workbook-ink); color: #fff; font-size: 14px; font-weight: 700; text-decoration: none; white-space: nowrap; }
.survey-banner-btn:hover { background: #2a3d31; color: #fff; }
.survey-banner-dismiss { min-height: 36px; padding: 0 8px; border: 0; background: transparent; color: var(--text-muted); font: 600 12.5px 'DM Sans', sans-serif; cursor: pointer; }
.survey-banner-dismiss:hover { color: var(--workbook-ink); text-decoration: underline; text-underline-offset: 3px; }
.lesson-content [id] { scroll-margin-top: 24px; }
.workbook-page .lesson-prev-next { gap: 16px; }
.workbook-page .lesson-prev-next-btn { background: transparent; border: 0; padding: 10px 0; font-size: 13px; box-shadow: none; }
.workbook-page .lesson-coffee { padding: 24px; border-radius: 14px; background: #eaece3; color: var(--text); }
.workbook-page .lesson-coffee-title { font-size: 19px; }
.workbook-page .lesson-coffee-sub { color: var(--text-muted); }
.workbook-page .lesson-coffee-btn { background: transparent; color: var(--text); border: 1px solid #c6cdbb; }
.workbook-page .lesson-coffee-btn:hover { background: var(--workbook-sage); }
.workbook-page .ad-zone { border: 0; background: transparent; }
.workbook-page .ad-zone-label { color: var(--text-muted); }

/* Homepage: keep the editorial layout, make the first interaction inviting. */
.ld-hero { padding-top: 65px; padding-bottom: 58px; }
.ld-h1 { font-size: 51px; letter-spacing: -.03em; }
.ld-preview { rotate: 0deg; border-radius: 18px; padding: 27px; box-shadow: 0 18px 40px -28px rgba(41,42,37,.3); border-color: var(--border); }
.ld-preview-kicker { color: var(--workbook-ink); font-size: 10px; font-weight: 700; letter-spacing: .12em; margin-bottom: 17px; }
.ld-pvh { margin-bottom: 21px; }
.ld-pvt { font-size: 22px; }
.ld-pvrow { display: grid; grid-template-columns: 60px 1fr auto 34px; gap: 10px; align-items: center; padding: 16px 0; border-color: var(--border); }
.ld-gl { color: var(--text-muted); font-style: normal; }
.ld-pat { font-size: 21px; }
.ld-preview-note { font-size: 12px; color: var(--text-muted); margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border); }
.ld-btn { min-height: 46px; border-radius: 10px; }
.ld-step { border: 0; border-top: 1px solid var(--border); border-radius: 0; background: transparent; padding: 22px 0; }
.ld-stn { background: var(--workbook-sage); color: var(--workbook-ink); font-size: 12px; width: 32px; height: 32px; }
.ld-std { font-size: 14px; line-height: 1.7; }
.ld-uh { color: var(--text-muted); line-height: 1.6; }
.ld-l { padding: 12px; min-height: 46px; border-color: var(--border); }
.ld-band { background: var(--workbook-ink); }
.ld-resume { display: flex; gap: 22px; align-items: center; padding: 22px 26px; margin: 0 36px 32px; background: var(--workbook-sage); border: 1px solid #dce3d3; border-radius: 14px; }
.ld-resume[hidden] { display: none; }
.ld-resume-copy { flex: 1; }
.ld-resume-label { font-size: 10px; color: var(--workbook-ink); letter-spacing: .1em; font-weight: 700; }
.ld-resume .ld-resume-title { color: var(--text); font: 700 23px/1.3 'Playfair Display', Georgia, serif; margin: 5px 0; }
.ld-resume p { color: var(--text-muted); font-size: 13px; }
.ld-resume .ld-btn { background: var(--workbook-ink); }

@media (max-width: 1050px) {
  .lesson-layout { grid-template-columns: 215px minmax(0, 1fr); gap: 28px; padding: 28px 24px 0; }
  .lesson-sidebar { padding-right: 8px; }
  .workbook-page .card { padding: 25px; }
  .lesson-heading h1 { font-size: 35px; }
  .lesson-sidebar .lesson-unit-head { font-size: 10px; }
}

@media (max-width: 900px) {
  .lesson-layout { display: block; padding: 0 24px; }
  .lesson-sidebar { position: static; max-height: none; overflow: visible; padding: 16px 0 0; }
  .course-heading, .course-footnote { display: none; }
  .lesson-sidebar .lesson-progress { padding: 0 0 12px; gap: 7px; }
  .lesson-sidebar .lesson-progress-label { font-size: 11px; }
  .lesson-sidebar .tab-toggle-btn { display: flex; width: 100%; justify-content: space-between; align-items: center; margin: 0; padding: 11px 14px; background: var(--card); color: var(--text); border: 1px solid var(--border); border-radius: 9px; font-size: 12px; font-weight: 600; }
  .tab-toggle-btn [data-role="course-toggle-label"] { color: var(--accent); }
  .lesson-sidebar .lesson-units { padding: 12px; background: var(--card); border-radius: 0 0 10px 10px; }
  .lesson-sidebar .lesson-unit-head { font-size: 12px; min-height: 30px; }
  .lesson-sidebar .course-unit:first-child { border: 0; }
  .lesson-heading { padding-top: 27px; }
  .lesson-heading h1 { font-size: 36px; max-width: 650px; }
  .workbook-page .lesson-content { max-width: 760px; margin: auto; }
  .ld-hero { padding: 42px 24px; }
  .ld-h1 { font-size: 43px; }
  .ld-resume { margin: 0 24px 28px; }
}

@media (max-width: 600px) {
  .lesson-topbar, .ld-top, .workbook-page .lesson-topbar { padding: 16px 20px; min-height: 76px; }
  .lesson-wm, .ld-wm { font-size: 20px; gap: 5px; }
  .lesson-wm img, .ld-wm img { width: 27px; height: 27px; margin-right: 2px; }
  .lesson-layout { padding: 0 16px; }
  .lesson-heading { padding-top: 26px; }
  .lesson-heading h1 { font-size: 33px; margin-top: 14px; }
  .lesson-eyebrow { font-size: 9px; gap: 10px; }
  .lesson-eyebrow span { padding-left: 10px; font-size: 9px; }
  .lesson-heading-sub { font-size: 13px; }
  .lesson-jump-links { margin: 22px 0; }
  .workbook-page .card { padding: 22px 18px; margin-bottom: 18px; border-radius: 12px; }
  .workbook-page .card h2 { font-size: 23px; }
  .workbook-page .explain { font-size: 15px; line-height: 1.8; }
  .workbook-page .lesson-essential > .explain:first-of-type { padding: 15px; }
  .workbook-page th, .workbook-page td { padding: 11px 8px; }
  .workbook-page table { font-size: 14px; }
  .play-btn, .ld-spk { width: 44px; min-width: 44px; height: 44px; }
  .translation-toggle { width: 44px; height: 44px; }
  .translation-text { max-width: calc(100vw - 24px); padding: 12px 16px; font-size: 14px; }
  /* Touch: keep each play button a comfortable tap target. */
  .conjugation-text { font-size: 15px; }
  .conjugation-text .play-btn { width: 40px; height: 40px; min-width: 40px; }
  .workbook-page .example-table { display: block; min-width: 0; }
  .workbook-page .example-table tbody { display: block; }
  .workbook-page .example-table tr { display: grid; grid-template-columns: 1fr 1fr; border-bottom: 1px solid var(--border); padding: 12px 0; gap: 7px; }
  .workbook-page .example-table tr:first-child { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); padding: 0; }
  .workbook-page .example-table td { display: block; padding: 7px 0; border: 0; overflow-wrap: anywhere; }
  .workbook-page .example-table td[data-label*="Example"], .workbook-page .example-table td[data-label*="example"], .workbook-page .example-table td:last-child:nth-child(3) { grid-column: 1 / -1; }
  .workbook-page .example-table td::before { content: attr(data-label); display: block; color: var(--text-muted); font-size: 10px; font-weight: 500; margin-bottom: 5px; text-transform: uppercase; letter-spacing: .05em; }
  .workbook-page .example-table tr:last-child { border: 0; }
  .workbook-page .exercise-shell { padding: 15px; }
  .workbook-page .exercise-sentence { font-size: 20px; }
  .workbook-page .exercise-options { gap: 9px; }
  .workbook-page .exercise-option { padding: 13px; }
  .workbook-page .practice-switcher { gap: 7px; }
  .workbook-page .practice-switch-btn { padding: 9px 11px; font-size: 12px; }
  .workbook-page .lesson-coffee { padding: 22px 18px; gap: 14px; }
  .lesson-completion { padding: 22px 18px; }
  .lesson-completion a { width: 100%; margin: 0; text-align: center; }
  .survey-banner { flex-direction: column; align-items: stretch; gap: 16px; padding: 22px 18px; border-radius: 12px; }
  .survey-banner-title { font-size: 19px; }
  .survey-banner-btn { white-space: normal; text-align: center; }
  .survey-banner-dismiss { min-height: 44px; }
  .workbook-page .lesson-prev-next { flex-direction: row; align-items: start; }
  .workbook-page .lesson-prev-next-btn { width: auto; max-width: 48%; text-align: left; font-size: 12px; }
  .workbook-page .lesson-prev-next-btn:last-child { text-align: right; margin-left: auto; }
  .ld-hero { padding: 36px 20px; gap: 32px; }
  .ld-h1 { font-size: 37px; }
  .ld-preview { padding: 21px; width: 100%; }
  .ld-pvrow { grid-template-columns: 60px 1fr 44px; column-gap: 9px; row-gap: 0; }
  .ld-pat { grid-row: span 2; white-space: nowrap; font-size: 19px; }
  .ld-ex { grid-column: 2; }
  .ld-gl { grid-column: 2; grid-row: 2; font-size: 12px; margin-top: 3px; }
  .ld-spk { grid-column: 3; grid-row: 1 / 3; margin: 0; }
  .ld-pvt { font-size: 20px; }
  .ld-resume { margin: 0 20px 26px; padding: 21px; flex-direction: column; align-items: stretch; gap: 15px; }
  .ld-resume .ld-btn { text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}