/* Professor Capy public skin: the book's blue, gold and paper classroom language. */
:root {
  --pc-navy: #102f48;
  --pc-blue: #176fa6;
  --pc-sky: #69b8dc;
  --pc-gold: #f3bd3b;
  --pc-yellow: #f8d97c;
  --pc-red: #c74e37;
  --pc-green: #66845a;
  --pc-paper: #f5eddd;
  --pc-paper-dark: #e6d7bd;
  --pc-ink: #1b2024;
  --pc-white: #fffaf0;
  --pc-line: #161b1e;
}

body:has(.pc-site) { background: var(--pc-paper); color: var(--pc-ink); font-family: "Trebuchet MS", "Segoe UI", sans-serif; }
body:has(.pc-site) h1,
body:has(.pc-site) h2,
body:has(.pc-site) h3 { font-family: "Trebuchet MS", "Segoe UI", sans-serif; letter-spacing: 0; }
.pc-header { z-index: 50; background: var(--pc-navy); border: 0; box-shadow: 0 3px 0 rgba(16,47,72,.22); }
.pc-nav { position: relative; max-width: 1220px; padding: 12px 28px; }
.pc-brand { display: inline-flex; align-items: center; gap: 10px; color: var(--pc-white); text-decoration: none; line-height: 1.05; }
.pc-brand:hover { text-decoration: none; }
.pc-brand strong { display: block; font-size: 17px; letter-spacing: .02em; }
.pc-brand small { display: block; margin-top: 3px; color: #b7d7e5; font-size: 10px; text-transform: uppercase; letter-spacing: .12em; }
.pc-brand-mark { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px; overflow: hidden; border: 3px solid var(--pc-gold); border-radius: 50%; background: var(--pc-paper); box-shadow: 2px 2px 0 rgba(0,0,0,.35); }
.pc-brand-mark img { width: 100%; height: 100%; object-fit: cover; }
.pc-links { align-items: center; gap: 4px !important; }
.pc-links a { color: var(--pc-white); padding: 8px 10px; border: 2px solid transparent; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; }
.pc-links a:hover { color: var(--pc-gold); text-decoration: none; }
.pc-nav-login { border-color: var(--pc-gold) !important; color: var(--pc-gold) !important; }
.pc-menu-toggle { display: none; align-items: center; justify-content: center; width: 44px; height: 44px; padding: 0; border: 2px solid var(--pc-gold); border-radius: 5px; background: transparent; color: var(--pc-white); font: 900 24px/1 sans-serif; cursor: pointer; }
.pc-visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.pc-site { overflow: hidden; }
.pc-hero { display: grid; grid-template-columns: minmax(0, .9fr) minmax(440px, 1.1fr); gap: 42px; align-items: center; max-width: 1220px; min-height: 650px; margin: 0 auto; padding: 68px 28px 74px; }
.pc-hero-copy h1 { max-width: 650px; margin: 10px 0 20px; color: var(--pc-navy); font-size: clamp(42px, 5vw, 68px); line-height: 1.02; font-weight: 900; text-transform: none; }
.pc-eyebrow { margin: 0 0 8px; color: var(--pc-red); font-size: 11px; font-weight: 900; letter-spacing: .13em; text-transform: uppercase; }
.pc-lead { max-width: 620px; color: #35444c; font-size: 19px; line-height: 1.45; }
.pc-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 28px 0 22px; }
.pc-button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 46px; padding: 11px 17px; border: 3px solid var(--pc-line); border-radius: 5px; font-weight: 900; text-transform: uppercase; letter-spacing: .03em; box-shadow: 3px 3px 0 var(--pc-line); }
.pc-button:hover { text-decoration: none; transform: translate(1px, 1px); box-shadow: 2px 2px 0 var(--pc-line); }
.pc-button-gold { background: var(--pc-gold); color: var(--pc-navy); }
.pc-button-light { background: var(--pc-white); color: var(--pc-navy); }
.pc-button-blue { background: var(--pc-blue); color: var(--pc-white); }
.pc-hero-note { display: flex; align-items: center; gap: 8px; color: #53636a; font-size: 12px; font-weight: 700; }
.pc-sun { display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 22px; border: 2px solid var(--pc-line); border-radius: 50%; color: var(--pc-navy); background: var(--pc-gold); }
.pc-hero-art { position: relative; width: min(100%, 500px); margin: 0; justify-self: end; transform: rotate(1deg); }
.pc-hero-art img { display: block; width: 100%; height: auto; aspect-ratio: 2 / 3; object-fit: cover; object-position: center; border: 4px solid var(--pc-line); box-shadow: 8px 8px 0 var(--pc-navy); }
.pc-hero-art figcaption { margin-top: 13px; color: #5c696b; font-size: 11px; font-weight: 700; }
.pc-capy-bubble { position: absolute; right: -10px; bottom: 38px; max-width: 270px; padding: 14px 17px; border: 3px solid var(--pc-line); border-radius: 6px; background: var(--pc-white); color: var(--pc-navy); font-size: 16px; font-weight: 900; line-height: 1.25; box-shadow: 4px 4px 0 var(--pc-line); transform: rotate(-2deg); }
.pc-capy-bubble::after { content: ""; position: absolute; right: 38px; bottom: -14px; width: 20px; height: 20px; border-right: 3px solid var(--pc-line); border-bottom: 3px solid var(--pc-line); background: var(--pc-white); transform: rotate(45deg); }
.pc-band { padding: 80px max(28px, calc((100% - 1220px) / 2)); }
.pc-band-paper { background: var(--pc-paper); }
.pc-band-blue { background: var(--pc-blue); color: var(--pc-white); }
.pc-band-gold { background: var(--pc-gold); color: var(--pc-navy); }
.pc-band-yellow { background: var(--pc-yellow); color: var(--pc-navy); }
.pc-section-heading { max-width: 680px; margin-bottom: 32px; }
.pc-section-heading h2, .pc-page-intro h1 { margin: 0 0 12px; color: var(--pc-navy); font-size: clamp(32px, 4vw, 52px); line-height: 1; font-weight: 900; text-transform: uppercase; }
.pc-section-heading > p:last-child { max-width: 610px; color: #53636a; font-size: 16px; }
.pc-heading-light .pc-eyebrow { color: var(--pc-yellow); }
.pc-heading-light h2, .pc-heading-light p { color: var(--pc-white); }
.pc-topic-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; max-width: 1165px; }
.pc-topic { position: relative; display: grid; grid-template-columns: 54px 1fr 28px; gap: 14px; min-height: 214px; padding: 22px; overflow: hidden; border: 3px solid var(--pc-line); border-radius: 6px; color: var(--pc-ink); text-decoration: none; box-shadow: 5px 5px 0 var(--pc-line); }
.pc-topic:hover { color: var(--pc-ink); text-decoration: none; transform: translate(2px, 2px); box-shadow: 3px 3px 0 var(--pc-line); }
.pc-topic-gold { background: var(--pc-gold); }
.pc-topic-blue { background: #8bc7de; }
.pc-topic-red { background: #e78c6d; }
.pc-topic-green { background: #a8c28e; }
.pc-topic-number { display: inline-flex; align-items: center; justify-content: center; width: 45px; height: 45px; border: 3px solid var(--pc-line); border-radius: 50%; background: var(--pc-white); color: var(--pc-navy); font-size: 17px; font-weight: 900; }
.pc-topic-kicker { margin: 2px 0 7px; color: #3b494d; font-size: 11px; font-weight: 900; text-transform: uppercase; letter-spacing: .07em; }
.pc-topic h2, .pc-topic h3 { margin: 0 0 9px; color: var(--pc-navy); font-size: 25px; line-height: 1; font-weight: 900; text-transform: uppercase; }
.pc-topic p { color: #26373c; font-size: 14px; line-height: 1.42; }
.pc-topic .pc-topic-question { margin: 10px 0 8px; color: var(--pc-navy); font-size: 17px; font-weight: 900; line-height: 1.25; }
.pc-topic-action { display: inline-block; margin-top: 12px; padding-bottom: 2px; border-bottom: 2px solid var(--pc-navy); color: var(--pc-navy); font-size: 12px; font-weight: 900; text-transform: uppercase; }
.pc-arrow { align-self: start; color: var(--pc-navy); font-size: 26px; font-weight: 900; }
.pc-kid-quiz { display: grid; grid-template-columns: minmax(0, .85fr) minmax(420px, 1.15fr); gap: 50px; align-items: center; }
.pc-quiz-intro { max-width: 580px; }
.pc-quiz-intro h2 { margin: 0 0 14px; color: var(--pc-navy); font-size: clamp(32px, 4vw, 50px); line-height: 1; }
.pc-quiz-intro > p:last-child { color: #38484d; font-size: 17px; line-height: 1.5; }
.pc-quiz-panel { display: grid; gap: 10px; padding: 24px; border: 3px solid var(--pc-line); border-radius: 6px; background: var(--pc-white); box-shadow: 6px 6px 0 var(--pc-line); }
.pc-quiz-answer { width: 100%; min-height: 54px; padding: 12px 15px; border: 2px solid var(--pc-line); border-radius: 5px; background: #fffdf7; color: var(--pc-navy); font: 800 15px/1.35 "Trebuchet MS", "Segoe UI", sans-serif; text-align: left; cursor: pointer; }
.pc-quiz-answer:hover { background: #e8f5fa; }
.pc-quiz-answer.is-correct { background: #cce8b8; }
.pc-quiz-answer.is-wrong { background: #f6c1b2; }
.pc-quiz-feedback { min-height: 48px; margin: 4px 0 0; padding: 12px 14px; border-left: 5px solid var(--pc-blue); background: #eef6f8; color: #33484e; font-size: 14px; font-weight: 800; }
.pc-quiz-feedback.is-correct { border-color: var(--pc-green); background: #e3f2d8; }
.pc-quiz-feedback.is-wrong { border-color: var(--pc-red); background: #fbe2da; }
.pc-method-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; max-width: 1180px; border-top: 3px solid var(--pc-white); border-left: 3px solid var(--pc-white); }
.pc-method-step { display: grid; grid-template-columns: 38px 1fr; gap: 12px; min-height: 145px; padding: 20px; border-right: 3px solid var(--pc-white); border-bottom: 3px solid var(--pc-white); }
.pc-method-step > span { display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; border: 2px solid var(--pc-line); border-radius: 50%; background: var(--pc-gold); color: var(--pc-navy); font-weight: 900; }
.pc-method-step h3 { margin: 0 0 5px; color: var(--pc-yellow); font-size: 18px; text-transform: uppercase; }
.pc-method-step p { margin: 0; color: #d8eff2; font-size: 13px; }
.pc-text-link { display: inline-flex; gap: 9px; margin-top: 26px; border-bottom: 3px solid currentColor; color: var(--pc-navy); font-weight: 900; text-transform: uppercase; }
.pc-text-link:hover { text-decoration: none; }
.pc-text-link-light { color: var(--pc-white); }
.pc-book-teaser { display: grid; grid-template-columns: 1fr 350px; align-items: center; gap: 55px; }
.pc-book-copy { max-width: 620px; }
.pc-book-copy h2 { margin: 0 0 14px; color: var(--pc-navy); font-size: clamp(32px, 4vw, 52px); line-height: 1; text-transform: uppercase; }
.pc-book-copy > p:not(.pc-eyebrow) { color: #53636a; font-size: 17px; }
.pc-book-stack { position: relative; min-height: 255px; }
.pc-book { position: absolute; width: 210px; height: 160px; padding: 20px; border: 3px solid var(--pc-line); color: var(--pc-white); font-size: 23px; font-weight: 900; line-height: .95; box-shadow: 5px 5px 0 var(--pc-line); }
.pc-book small { font-size: 13px; letter-spacing: .1em; }
.pc-book-red { top: 0; right: 10px; background: var(--pc-red); transform: rotate(5deg); }
.pc-book-green { top: 50px; right: 70px; background: var(--pc-green); transform: rotate(-4deg); }
.pc-book-blue { top: 102px; right: 25px; background: var(--pc-navy); transform: rotate(3deg); }
.pc-book-feature-mini { display: grid; grid-template-columns: minmax(220px, 340px) minmax(0, 1fr); gap: 64px; align-items: center; }
.pc-book-cover-mini { margin: 0; transform: rotate(-1deg); }
.pc-book-cover-mini img { display: block; width: 100%; height: auto; border: 4px solid var(--pc-line); box-shadow: 8px 8px 0 var(--pc-navy); }
.pc-progress { width: 100%; height: 18px; margin: 24px 0 10px; overflow: hidden; border: 3px solid var(--pc-line); border-radius: 4px; background: var(--pc-paper-dark); }
.pc-progress span { display: block; min-width: 4px; height: 100%; background: var(--pc-red); }
.pc-progress-label { margin: 0; color: #53636a; font-size: 12px !important; font-weight: 900; }
.pc-quote-band { padding: 58px 28px; background: var(--pc-navy); color: var(--pc-white); text-align: center; }
.pc-quote-band blockquote { max-width: 900px; margin: 0 auto 12px; font-size: clamp(26px, 4vw, 48px); font-weight: 900; line-height: 1.08; }
.pc-quote-band cite { color: var(--pc-gold); font-style: normal; font-weight: 900; }
.pc-page-intro { padding: 78px max(28px, calc((100% - 1220px) / 2)); }
.pc-page-intro .pc-eyebrow { color: var(--pc-yellow); }
.pc-page-intro h1 { max-width: 900px; color: var(--pc-white); }
.pc-page-intro p:last-child { max-width: 740px; margin: 0; color: #e3f4f1; font-size: 18px; }
.pc-page-intro.pc-band-gold .pc-eyebrow { color: var(--pc-red); }
.pc-page-intro.pc-band-gold h1, .pc-page-intro.pc-band-gold p:last-child { color: var(--pc-navy); }
.pc-topic-grid-large .pc-topic { min-height: 285px; }
.pc-check-list { display: grid; gap: 6px; margin: 17px 0 0; padding: 0; list-style: none; }
.pc-check-list li { position: relative; padding-left: 24px; color: #273a3f; font-size: 13px; font-weight: 700; }
.pc-check-list li::before { content: "✓"; position: absolute; left: 0; top: -2px; color: var(--pc-navy); font-size: 18px; font-weight: 900; }
.pc-topic-hero { display: grid; grid-template-columns: 70px 1fr; gap: 18px; align-items: center; max-width: 1220px; margin: 52px auto 0; padding: 34px 28px; border: 3px solid var(--pc-line); box-shadow: 7px 7px 0 var(--pc-line); }
.pc-topic-hero .pc-topic-number { width: 58px; height: 58px; font-size: 20px; }
.pc-topic-hero .pc-eyebrow { color: var(--pc-navy); }
.pc-topic-hero h1 { margin: 0 0 5px; color: var(--pc-navy); font-size: clamp(34px, 5vw, 60px); line-height: 1; text-transform: uppercase; }
.pc-topic-hero p:last-child { margin: 0; color: #273a3f; font-size: 18px; font-weight: 700; }
.pc-detail-grid, .pc-two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; }
.pc-detail-grid h2, .pc-two-col h2 { margin: 0 0 15px; color: var(--pc-navy); font-size: clamp(27px, 3vw, 40px); line-height: 1.05; text-transform: uppercase; }
.pc-detail-grid p, .pc-two-col > p { color: #53636a; font-size: 16px; }
.pc-callout { padding: 24px; border: 3px solid var(--pc-line); background: var(--pc-white); box-shadow: 5px 5px 0 var(--pc-line); }
.pc-callout h3 { margin: 0; color: var(--pc-navy); font-size: 22px; text-transform: uppercase; }
.pc-callout-note { margin: 20px 0 0 !important; padding-top: 14px; border-top: 2px solid var(--pc-paper-dark); font-size: 13px !important; font-weight: 700; }
.pc-book-list { max-width: 920px; margin: 0 auto; }
.pc-book-row { display: grid; grid-template-columns: 64px 1fr 20px; gap: 20px; align-items: start; padding: 28px 0; border-bottom: 3px solid var(--pc-line); }
.pc-book-row:first-child { padding-top: 0; }
.pc-book-row.is-featured { margin: 16px -20px; padding: 24px 20px; border: 3px solid var(--pc-line); background: #d8edf4; box-shadow: 5px 5px 0 var(--pc-line); }
.pc-book-index { color: var(--pc-red); font-size: 30px; font-weight: 900; }
.pc-book-row h2 { margin: 0 0 7px; color: var(--pc-navy); font-size: 29px; text-transform: uppercase; }
.pc-book-row p:last-child { color: #53636a; font-size: 16px; }
.pc-book-status { display: inline-block; margin-top: 8px; color: var(--pc-navy); font-size: 12px; text-transform: uppercase; }
.pc-status-dot { width: 14px; height: 14px; margin-top: 7px; border: 2px solid var(--pc-line); border-radius: 50%; background: var(--pc-gold); }
.pc-featured-book { display: grid; grid-template-columns: minmax(260px, 430px) minmax(0, 1fr); gap: 70px; align-items: center; }
.pc-featured-cover { margin: 0; }
.pc-featured-cover img { display: block; width: 100%; height: auto; border: 5px solid var(--pc-line); box-shadow: 10px 10px 0 var(--pc-navy); transform: rotate(-1deg); }
.pc-featured-cover figcaption { margin: 16px 0 0; color: #4d4a3d; font-size: 11px; font-weight: 900; text-align: center; text-transform: uppercase; }
.pc-featured-copy h2 { margin: 0 0 8px; color: var(--pc-navy); font-size: clamp(36px, 5vw, 62px); line-height: 1; text-transform: uppercase; }
.pc-featured-copy h3 { margin: 26px 0 10px; color: var(--pc-navy); font-size: 20px; text-transform: uppercase; }
.pc-book-subtitle { margin: 0 0 22px; color: #3b494d; font-size: 21px; font-weight: 900; }
.pc-production-badge { display: inline-block; padding: 9px 12px; border: 3px solid var(--pc-line); border-radius: 4px; background: var(--pc-white); color: var(--pc-navy); font-size: 12px; font-weight: 900; text-transform: uppercase; box-shadow: 3px 3px 0 var(--pc-line); }
.pc-progress-dark { max-width: 610px; background: var(--pc-white); }
.pc-source-date { margin: 0; color: #4e5148; font-size: 12px; font-weight: 900; }
.pc-mission-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px 20px; margin: 0; padding: 0; list-style: none; }
.pc-mission-list li { position: relative; padding-left: 25px; color: #273a3f; font-size: 14px; font-weight: 800; }
.pc-mission-list li::before { content: "✓"; position: absolute; left: 0; top: -2px; color: var(--pc-green); font-size: 18px; font-weight: 900; }
.pc-band-blue.pc-two-col h2, .pc-band-blue.pc-two-col > p { color: var(--pc-white); }
.pc-band-blue.pc-two-col .pc-eyebrow { color: var(--pc-yellow); }
.pc-preview-band .pc-section-heading > p:last-child { color: #d8eff2; }
.pc-preview-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 440px)); gap: 34px; align-items: start; }
.pc-preview-page { margin: 0; }
.pc-preview-page img { display: block; width: 100%; height: auto; border: 4px solid var(--pc-line); box-shadow: 8px 8px 0 #092238; }
.pc-preview-page figcaption { margin-top: 16px; color: var(--pc-yellow); font-size: 12px; font-weight: 900; text-transform: uppercase; }
.pc-author-hero { display: flex; align-items: center; gap: 28px; max-width: 1220px; margin: 0 auto; padding-top: 92px; padding-bottom: 92px; }
.pc-author-badge { display: flex; align-items: center; justify-content: center; width: 128px; height: 128px; border: 5px solid var(--pc-line); border-radius: 50%; background: var(--pc-gold); color: var(--pc-navy); font-size: 76px; font-weight: 900; box-shadow: 8px 8px 0 var(--pc-navy); }
.pc-author-hero h1 { margin: 0 0 12px; color: var(--pc-navy); font-size: clamp(40px, 6vw, 72px); line-height: 1; text-transform: uppercase; }
.pc-check-line { margin: 0 0 12px; color: var(--pc-white) !important; font-weight: 700; }
.pc-methodology-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.pc-methodology-grid article { padding: 20px; border: 3px solid var(--pc-line); background: var(--pc-white); box-shadow: 4px 4px 0 var(--pc-line); }
.pc-step-disc { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; margin-bottom: 22px; border: 2px solid var(--pc-line); border-radius: 50%; background: var(--pc-gold); color: var(--pc-navy); font-weight: 900; }
.pc-methodology-grid h2 { margin: 0 0 8px; color: var(--pc-navy); font-size: 23px; text-transform: uppercase; }
.pc-footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px 18px; max-width: 1180px; margin: 0 auto; color: #52666b; }
.pc-footer-inner strong { color: var(--pc-navy); }
.pc-footer-inner a { color: var(--pc-blue); font-weight: 700; }
.pc-form-card { max-width: 620px; padding: 28px; border: 3px solid var(--pc-line); background: var(--pc-white); box-shadow: 5px 5px 0 var(--pc-line); }
.pc-form-row { margin-bottom: 16px; }
.pc-form-row label { display: block; margin-bottom: 6px; color: var(--pc-navy); font-size: 12px; font-weight: 900; text-transform: uppercase; }
.pc-form-row input, .pc-form-row textarea, .pc-form-inline input { width: 100%; padding: 11px; border: 2px solid var(--pc-line); border-radius: 3px; background: #fffdf6; color: var(--pc-ink); font: inherit; }
.pc-form-row textarea { min-height: 130px; resize: vertical; }
.pc-form-inline { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 15px; }
.pc-form-inline input { width: auto; flex: 1 1 160px; }
.pc-form-inline .pc-button { min-height: 40px; padding: 8px 13px; }
.pc-button:focus-visible, .pc-topic:focus-visible, .pc-links a:focus-visible, .pc-menu-toggle:focus-visible, .pc-quiz-answer:focus-visible { outline: 4px solid var(--pc-yellow); outline-offset: 3px; }
@media (max-width: 920px) {
  .pc-nav { padding: 12px 18px; }
  .pc-links { gap: 0 !important; }
  .pc-links a { padding: 7px 6px; font-size: 10px; }
  .pc-hero { grid-template-columns: 1fr; gap: 30px; padding-top: 52px; }
  .pc-hero-art { max-width: 500px; justify-self: start; }
  .pc-method-grid { grid-template-columns: repeat(2, 1fr); }
  .pc-methodology-grid { grid-template-columns: repeat(2, 1fr); }
  .pc-kid-quiz { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .pc-menu-toggle { display: inline-flex; }
  .pc-links { display: none !important; position: absolute; top: 100%; right: 12px; left: 12px; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px !important; padding: 12px; border: 3px solid var(--pc-line); background: var(--pc-navy); box-shadow: 5px 5px 0 var(--pc-line); }
  .pc-header.pc-menu-open .pc-links { display: grid !important; }
  .pc-links a { display: flex; align-items: center; min-height: 44px; padding: 9px 10px; font-size: 11px; }
  .pc-nav-login { justify-content: center; }
}
@media (max-width: 640px) {
  .pc-nav { align-items: center; }
  .pc-brand strong { font-size: 14px; }
  .pc-brand small { max-width: 180px; font-size: 8px; }
  .pc-hero { min-height: 0; padding: 44px 18px 55px; }
  .pc-hero-copy h1 { font-size: 39px; }
  .pc-lead { font-size: 17px; }
  .pc-capy-bubble { right: -3px; bottom: 31px; max-width: 220px; font-size: 14px; }
  .pc-band, .pc-page-intro { padding: 54px 18px; }
  .pc-topic-grid, .pc-book-teaser, .pc-book-feature-mini, .pc-featured-book, .pc-detail-grid, .pc-two-col { grid-template-columns: 1fr; }
  .pc-topic-grid-large .pc-topic { min-height: 0; }
  .pc-method-grid, .pc-methodology-grid { grid-template-columns: 1fr; }
  .pc-method-step { min-height: 0; }
  .pc-book-stack { min-height: 250px; }
  .pc-author-hero { align-items: flex-start; flex-direction: column; padding-top: 58px; padding-bottom: 58px; }
  .pc-topic-hero { margin: 30px 18px 0; padding: 24px 18px; }
  .pc-mission-list { grid-template-columns: 1fr; }
  .pc-preview-grid { grid-template-columns: 1fr; }
  .pc-featured-book { gap: 42px; }
  .pc-featured-cover { max-width: 420px; }
  .pc-quiz-panel { padding: 16px; }
  .pc-kid-quiz { gap: 28px; }
}
@media (prefers-reduced-motion: reduce) {
  .pc-button, .pc-topic { transition: none; }
}