:root {
  color-scheme: light;
  --cream: #f7f4ea;
  --paper: #fffdf7;
  --ink: #102d37;
  --muted: #516166;
  --teal: #17655e;
  --teal-dark: #123f42;
  --line: #d9ddd2;
  --gold: #e6c784;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; background: var(--cream); color: var(--ink); font: 17px/1.75 -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif; word-break: keep-all; overflow-wrap: anywhere; }
a { color: inherit; text-underline-offset: .22em; }
button { font: inherit; }
img { max-width: 100%; height: auto; }
h1, h2, h3, p, figure { margin: 0; }
h1, h2, h3 { letter-spacing: -.045em; text-wrap: balance; }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.8rem); line-height: 1.36; }
h3 { font-size: 1.35rem; line-height: 1.45; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid #9a6616; outline-offset: 5px; }
.page-width { width: min(1184px, calc(100% - 64px)); margin-inline: auto; }
.skip-link { position: absolute; left: 16px; top: 10px; z-index: 5; padding: 10px 16px; background: var(--paper); color: var(--ink); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
.site-header { border-bottom: 1px solid var(--line); }
.header-inner { width: min(1280px, calc(100% - 64px)); min-height: 100px; margin-inline: auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; font-size: 1.45rem; font-weight: 850; line-height: 1.25; }
.brand img { flex: 0 0 48px; }
.brand small { display: block; margin-top: 4px; color: var(--muted); font-size: .72rem; font-weight: 600; letter-spacing: .03em; }
.site-header nav { display: flex; gap: 28px; align-items: center; font-size: .9rem; }
.site-header nav a { display: inline-flex; align-items: center; min-height: 44px; }
.back-link { gap: 10px; font-weight: 750; text-decoration: none; }
.hero { display: grid; grid-template-columns: minmax(0, 1.14fr) minmax(0, .86fr); gap: 56px; padding-block: 64px 72px; align-items: center; }
.eyebrow { color: var(--teal); font-size: .76rem; font-weight: 800; letter-spacing: .1em; line-height: 1.5; margin-bottom: 18px; }
.availability { display: inline-block; margin: 0 0 25px; padding: 7px 13px; background: #e4ede3; color: #234c3b; border: 1px solid #b8cbb7; border-radius: 30px; font-size: .78rem; font-weight: 700; }
.hero h1 { font-size: clamp(2.7rem, 4.7vw, 4rem); line-height: 1.14; overflow-wrap: anywhere; }
.hero h1 #product-title-sub { display: block; margin-top: 18px; font-size: clamp(1.4rem, 2.6vw, 2rem); font-weight: 700; line-height: 1.4; }
.hero h1[dir="rtl"] { letter-spacing: normal; }
.hero-lead { margin-top: 27px; max-width: 540px; font-size: 1.12rem; line-height: 1.85; }
.hero-description { max-width: 530px; margin-top: 12px; color: var(--muted); font-size: .96rem; }
.hero-facts { display: flex; gap: 0; padding: 0; margin: 30px 0; list-style: none; }
.hero-facts li { padding-inline: 24px; border-right: 1px solid #c7cfc4; }
.hero-facts li:first-child { padding-left: 0; }
.hero-facts li:last-child { padding-right: 0; border: 0; }
.hero-facts strong { display: block; font-size: 1.75rem; line-height: 1.2; letter-spacing: -.04em; }
.hero-facts strong span { margin-left: 4px; font-size: .85rem; font-weight: 650; }
.hero-facts li > span { display: block; margin-top: 7px; color: var(--muted); font-size: .76rem; }
.purchase-summary { border-top: 1px solid var(--line); padding-top: 24px; }
.price { display: flex; align-items: baseline; gap: 15px; margin-bottom: 18px; }
.price > span { font-size: .88rem; color: var(--muted); }
.price strong { font-size: 2rem; letter-spacing: -.03em; line-height: 1.2; }
.price strong span { font-size: 1.15rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.button { min-height: 52px; display: inline-flex; align-items: center; justify-content: center; gap: 20px; padding: 13px 19px; border: 1px solid transparent; border-radius: 8px; text-decoration: none; font-size: .91rem; font-weight: 750; line-height: 1.45; text-align: center; }
.button-primary { background: var(--ink); color: #fffdf7; }
.button-primary:hover { background: #234a52; }
.button-unavailable { background: #e8e9e1; border-color: #c9d0c5; color: #58645d; cursor: not-allowed; opacity: 1; }
.small-note { color: var(--muted); font-size: .78rem; line-height: 1.75; margin-top: 13px; max-width: 510px; }
.hero-art { align-self: stretch; display: flex; flex-direction: column; justify-content: center; min-width: 0; }
.cover-stage { position: relative; isolation: isolate; display: grid; place-items: center; padding: 78px 52px 80px; min-height: 605px; background: radial-gradient(ellipse at 25% 15%, #326f69, transparent 72%), #173f45; border-radius: 18px; }
.cover-stage::before { content: ""; position: absolute; inset: 19px; border: 1px solid #5b8077; border-radius: 7px; z-index: -1; }
.stage-caption { position: absolute; top: 30px; left: 33px; color: #e8e3cb; letter-spacing: .17em; font-size: .56rem; line-height: 1.5; }
.book-cover { display: block; width: min(100%, 310px); aspect-ratio: 70 / 99; object-fit: contain; box-shadow: 11px 22px 35px #061f3466, -3px 0 0 #d7d0b9; border-radius: 2px 6px 6px 2px; transform: rotate(-4deg); background: #efe8d8; }
.cover-note { position: absolute; right: 11px; bottom: 31px; max-width: 240px; padding: 18px 22px; background: var(--paper); color: var(--ink); box-shadow: 0 8px 24px #081a202b; transform: rotate(3deg); border-left: 3px solid var(--gold); }
.cover-note span { display: block; color: var(--muted); font-size: .65rem; margin-bottom: 7px; }
.cover-note strong { display: block; font-size: 1.13rem; letter-spacing: -.03em; line-height: 1.5; }
.hero-art figcaption { margin-top: 17px; text-align: center; color: var(--muted); font-size: .74rem; }
.intro-section { padding-block: 36px 88px; border-top: 1px solid var(--line); }
.intro-section > .eyebrow { margin-top: 38px; }
.section-lead { max-width: 675px; color: var(--muted); font-size: 1rem; margin-top: 22px; }
.value-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 42px; margin-top: 46px; }
.number-label { display: block; color: var(--teal); font-size: .75rem; font-weight: 800; letter-spacing: .06em; border-top: 2px solid #94b2a4; padding-top: 18px; margin-bottom: 16px; }
.value-grid p { color: var(--muted); font-size: .93rem; margin-top: 17px; }
.time-section { background: var(--teal-dark); color: var(--paper); }
.time-inner { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.4fr); gap: 58px; align-items: center; padding-block: 54px; }
.time-section .eyebrow { color: var(--gold); }
.time-inner h2 { font-size: 2rem; }
.time-inner > div > p:last-child { margin-top: 15px; color: #d4e2da; font-size: .88rem; }
.time-steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; list-style: none; margin: 0; padding: 0; }
.time-steps li { border-top: 1px solid #658783; padding-top: 18px; }
.time-number { display: block; color: var(--gold); font-size: 3.25rem; font-weight: 750; letter-spacing: -.07em; line-height: 1.1; margin-bottom: 18px; }
.time-number small { font-size: 1rem; margin-left: 7px; }
.time-steps strong { font-size: 1rem; }
.time-steps p { margin-top: 8px; color: #d4e2da; font-size: .8rem; }
.contents-section { padding-block: 88px 72px; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; margin-bottom: 36px; }
.section-heading > p { max-width: 420px; color: var(--muted); font-size: .87rem; }
.chapter-list { padding: 0; margin: 0; list-style: none; border-top: 1px solid var(--line); }
.chapter-list > li { display: grid; grid-template-columns: 115px minmax(0, 1fr) 152px; gap: 32px; padding-block: 30px; border-bottom: 1px solid var(--line); }
.chapter-period { padding-top: 2px; }
.chapter-period span { display: block; color: var(--teal); font-size: .62rem; font-weight: 800; letter-spacing: .14em; }
.chapter-period strong { font-size: 1.7rem; line-height: 1.4; letter-spacing: -.06em; }
.chapter-list h3 { font-size: 1.23rem; }
.chapter-list p { margin-top: 9px; color: var(--muted); font-size: .91rem; }
.chapter-topics { display: flex; flex-wrap: wrap; gap: 6px 20px; margin: 16px 0 0; padding: 0; list-style: none; color: var(--teal); font-size: .76rem; }
.chapter-topics li::before { content: "·"; margin-right: 7px; }
.review-label { justify-self: end; align-self: start; margin-top: 3px; padding: 8px 0 8px 16px; border-left: 2px solid #bcac83; color: #58634f; font-size: .76rem; line-height: 1.8; }
.sample-section { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); align-items: center; gap: 64px; background: #e8eee4; padding: 52px 64px; border-radius: 16px; }
.sample-intro p:last-child { margin-top: 24px; color: var(--muted); max-width: 345px; }
.worksheet-sample { padding: 36px; border: 1px solid #d5d8cb; background: var(--paper); box-shadow: 0 8px 16px #17372b0d; }
.sample-day { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; color: var(--teal); font-size: .72rem; font-weight: 850; letter-spacing: .04em; padding-bottom: 18px; margin-bottom: 20px; border-bottom: 1px solid var(--line); }
.sample-day span { color: var(--muted); font-size: .66rem; font-weight: 500; letter-spacing: 0; }
.worksheet-sample h3 { font-size: 1.5rem; line-height: 1.5; }
.sample-prompt { font-size: .95rem; margin-top: 22px; line-height: 2.4; }
.blank { display: inline-block; width: 60px; border-bottom: 1px solid #527569; vertical-align: -.1em; }
.sample-example { padding: 14px 16px; margin-top: 18px; background: #f1f3e9; color: #4a5c51; font-size: .78rem; }
.sample-example strong { display: block; color: var(--teal); margin-bottom: 5px; }
.writing-lines { list-style: none; padding: 0; margin: 25px 0 0; }
.writing-lines li { min-height: 47px; padding-top: 5px; border-bottom: 1px solid #cbd2c7; color: #5d675f; font-size: .7rem; }
.sample-caption { margin-top: 20px; color: var(--muted); font-size: .65rem; line-height: 1.65; }
.bundle-section { padding-block: 88px 70px; }
.bundle-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.bundle-item { padding: 28px; border: 1px solid var(--line); border-radius: 12px; background: var(--paper); }
.file-label { display: block; margin-bottom: 24px; color: var(--teal); font-size: .67rem; font-weight: 800; letter-spacing: .08em; }
.bundle-item h3 { font-size: 1.3rem; }
.bundle-item > p { margin-top: 20px; font-size: .87rem; color: var(--muted); }
.bundle-item > .bundle-note { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); font-size: .73rem; }
.preview-section { display: grid; grid-template-columns: minmax(0, 1fr) 240px; gap: 40px; padding: 50px 60px; background: var(--ink); color: var(--paper); border-radius: 16px; }
.preview-section .eyebrow { color: var(--gold); }
.preview-section h2 { font-size: clamp(1.7rem, 3.1vw, 2.4rem); }
.preview-section p:not(.eyebrow) { margin-top: 18px; color: #cedbd8; font-size: .89rem; }
.button-light { background: #efe7cb; color: var(--ink); margin-top: 26px; }
.button-light:hover { background: #fff8df; }
.preview-section .preview-note { font-size: .72rem !important; }
.preview-section a:focus-visible { outline-color: var(--gold); }
.preview-mark { display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; border-left: 1px solid #486168; color: var(--gold); }
.preview-mark span { font-size: .6rem; letter-spacing: .15em; }
.preview-mark strong { font-size: 7rem; line-height: 1.15; font-weight: 550; letter-spacing: -.06em; padding-right: .06em; }
.usage-section { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 90px; padding-block: 88px; }
.usage-section .section-lead { font-size: .93rem; }
.usage-steps { list-style: none; margin: 0; padding: 0; }
.usage-steps li { display: flex; align-items: flex-start; gap: 20px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.usage-steps li:first-child { padding-top: 0; }
.usage-steps li > span { display: grid; place-items: center; width: 34px; height: 34px; flex: 0 0 34px; background: #dde8dd; border-radius: 50%; color: var(--teal-dark); font-size: .9rem; font-weight: 800; }
.usage-steps h3 { font-size: 1.06rem; line-height: 1.6; }
.usage-steps p { margin-top: 9px; font-size: .88rem; color: var(--muted); }
.faq-section { border-top: 1px solid var(--line); padding-block: 62px 70px; }
.faq-section h2 { font-size: 2rem; }
.faq-list { margin-top: 32px; }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { cursor: pointer; padding: 21px 8px; font-size: 1rem; font-weight: 700; }
.faq-list summary::marker { color: var(--teal); }
.faq-list details p { max-width: 940px; margin: 0 8px 24px; color: var(--muted); font-size: .92rem; }
.closing-section { padding-block: 55px 80px; text-align: center; }
.closing-section h2 { font-size: clamp(1.8rem, 3.1vw, 2.45rem); }
.closing-section > p:not(.eyebrow) { margin: 20px auto 25px; color: var(--muted); font-size: .86rem; }
.site-footer { background: var(--ink); color: #f3f0df; }
.footer-inner { display: flex; justify-content: space-between; gap: 32px; padding-block: 42px; }
.footer-inner strong { font-size: 1.5rem; letter-spacing: .04em; }
.footer-inner p { color: #c4d4d0; font-size: .78rem; margin-top: 8px; }
.footer-inner .product-code { margin-top: 18px; font-size: .67rem; }
.footer-inner .footer-label { color: #d6dfd7; margin: 0 0 9px; font-size: .74rem; }
.contact-link { font-size: 1.03rem; }
.site-footer a { display: inline-flex; align-items: center; min-height: 44px; gap: 8px; }
.site-footer a:focus-visible { outline-color: var(--gold); }
@media (max-width: 1040px) {
  .hero { gap: 32px; }
  .cover-stage { min-height: 570px; padding-inline: 37px; }
  .hero-facts li { padding-inline: 18px; }
  .value-grid { gap: 28px; }
  .time-inner { gap: 36px; }
  .time-steps { gap: 16px; }
  .sample-section { padding: 42px; gap: 38px; }
  .bundle-item { padding: 23px; }
  .usage-section { gap: 50px; }
}
@media (max-width: 800px) {
  .page-width, .header-inner { width: calc(100% - 40px); }
  .header-inner { min-height: 88px; }
  .site-header nav { gap: 18px; font-size: .8rem; }
  .hero { grid-template-columns: 1fr; gap: 40px; padding-block: 40px 48px; }
  .hero h1 { font-size: clamp(2.75rem, 7vw, 3.8rem); }
  .hero h1 #product-title-sub { font-size: 1.7rem; }
  .hero-lead, .hero-description { max-width: 620px; }
  .hero-art { width: min(100%, 470px); justify-self: center; }
  .cover-stage { min-height: 540px; padding: 67px 70px 79px; }
  .book-cover { width: 270px; }
  .intro-section { padding-block: 15px 60px; }
  .value-grid { gap: 20px; margin-top: 34px; }
  .value-grid h3 { font-size: 1.12rem; }
  .value-grid p { font-size: .87rem; }
  .time-inner { grid-template-columns: 1fr; padding-block: 38px; }
  .time-steps { gap: 24px; }
  .section-heading { display: block; }
  .section-heading > p { margin-top: 20px; }
  .chapter-list > li { grid-template-columns: 84px minmax(0, 1fr); gap: 20px; }
  .review-label { grid-column: 2; justify-self: start; margin-top: -8px; padding-block: 0; }
  .contents-section { padding-block: 62px 48px; }
  .sample-section { grid-template-columns: 1fr; padding: 32px; }
  .sample-intro h2 br { display: none; }
  .sample-intro p:last-child { max-width: none; margin-top: 18px; }
  .worksheet-sample { max-width: 440px; width: 100%; justify-self: center; }
  .bundle-section { padding-block: 62px 48px; }
  .bundle-grid { grid-template-columns: 1fr; gap: 16px; }
  .bundle-item { padding: 27px; }
  .bundle-item h3 br { display: none; }
  .bundle-item h3 { font-size: 1.25rem; }
  .file-label { margin-bottom: 14px; }
  .bundle-item > p { margin-top: 14px; }
  .preview-section { grid-template-columns: minmax(0, 1fr) 150px; padding: 34px; gap: 25px; }
  .preview-mark strong { font-size: 5rem; }
  .preview-mark span { font-size: .48rem; }
  .usage-section { grid-template-columns: 1fr; gap: 34px; padding-block: 62px; }
  .usage-section h2 br { display: none; }
  .usage-section .section-lead { max-width: 620px; }
  .faq-section { padding-block: 42px 40px; }
}
@media (max-width: 520px) {
  body { font-size: 16px; }
  .page-width, .header-inner { width: calc(100% - 36px); }
  .header-inner { min-height: 80px; gap: 12px; }
  .brand { gap: 9px; font-size: 1.3rem; }
  .brand img { width: 42px; flex-basis: 42px; }
  .brand small { font-size: .63rem; }
  .site-header nav { gap: 0; }
  .site-header nav a:first-child { display: none; }
  .hero { padding-top: 32px; }
  .hero .eyebrow { font-size: .66rem; margin-bottom: 15px; }
  .availability { font-size: .71rem; margin-bottom: 22px; }
  .hero h1 { font-size: clamp(2.5rem, 9.6vw, 3.1rem); letter-spacing: -.06em; }
  .hero h1 #product-title-sub { margin-top: 13px; font-size: 1.26rem; letter-spacing: -.045em; }
  .hero-lead { font-size: 1.02rem; margin-top: 21px; }
  .hero-description { font-size: .9rem; }
  .hero-facts { margin-block: 26px; }
  .hero-facts li { flex: 1; padding-inline: 12px; }
  .hero-facts strong { font-size: 1.7rem; }
  .hero-facts strong span { font-size: .72rem; }
  .hero-facts li > span { font-size: .66rem; }
  .hero-actions { display: grid; grid-template-columns: 1fr; }
  .button { width: 100%; }
  .small-note { font-size: .75rem; }
  .cover-stage { min-height: 480px; padding: 67px 54px 73px; }
  .book-cover { width: 245px; }
  .cover-note { right: 8px; bottom: 22px; padding: 14px 17px; }
  .cover-note strong { font-size: 1rem; }
  .hero-art figcaption { font-size: .65rem; }
  .intro-section > .eyebrow { margin-top: 25px; }
  .value-grid { grid-template-columns: 1fr; gap: 30px; }
  .value-grid h3 { font-size: 1.32rem; }
  .value-grid h3 br { display: none; }
  .value-grid p { margin-top: 12px; font-size: .93rem; }
  .number-label { margin-bottom: 13px; }
  .time-steps { gap: 16px; }
  .time-number { font-size: 2.85rem; }
  .time-steps strong { font-size: .87rem; }
  .time-steps p { font-size: .73rem; }
  .time-steps p br { display: none; }
  .chapter-list > li { grid-template-columns: 1fr; gap: 12px; padding-block: 25px; }
  .chapter-period { display: flex; align-items: baseline; gap: 10px; }
  .chapter-period strong { font-size: 1.5rem; }
  .review-label { grid-column: 1; margin-top: 4px; font-size: .72rem; }
  .review-label br { display: none; }
  .chapter-topics { gap: 5px 16px; font-size: .74rem; }
  .sample-section { padding: 28px 19px; }
  .worksheet-sample { padding: 24px 21px; }
  .sample-intro p:last-child { font-size: .92rem; }
  .worksheet-sample h3 { font-size: 1.35rem; }
  .sample-prompt { font-size: .87rem; }
  .blank { width: 45px; }
  .sample-example { padding: 12px; font-size: .75rem; }
  .bundle-item { padding: 23px; }
  .preview-section { grid-template-columns: 1fr; padding: 30px 24px; }
  .preview-mark { display: none; }
  .preview-section p:not(.eyebrow) { font-size: .84rem; }
  .usage-steps li { gap: 14px; }
  .usage-steps li > span { width: 30px; height: 30px; flex-basis: 30px; }
  .faq-section h2 { font-size: 1.7rem; }
  .faq-list summary { font-size: .95rem; padding-inline: 2px; }
  .faq-list details p { margin-inline: 2px; font-size: .87rem; }
  .closing-section { padding-block: 36px 55px; }
  .footer-inner { flex-direction: column; padding-block: 34px; gap: 25px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media print {
  body { background: #fff; color: #000; }
  .site-header, .hero-art, .preview-section, .hero-actions, .closing-section .button, .skip-link { display: none; }
  .page-width { width: 100%; }
  .hero, .usage-section, .sample-section, .time-inner, .bundle-grid { display: block; }
  .hero, .contents-section, .usage-section, .bundle-section { padding-block: 24px; }
  .time-section, .sample-section, .site-footer { background: #fff; color: #000; }
  .bundle-item, .worksheet-sample, .chapter-list > li { break-inside: avoid; }
  .time-number, .time-inner > div > p:last-child, .time-steps p, .footer-inner p { color: #222; }
  .time-inner .eyebrow { color: #333; }
}
/* The selector controls actual book editions; regional choices share a base edition. */
.product-language-choice{margin:1rem 0}.product-language-choice label{display:block;font-weight:700;margin-bottom:.5rem}.product-language-choice select{width:100%;max-width:100%;padding:.85rem;border:1px solid #567784;border-radius:.55rem;background:#fff;color:#102638;font:inherit}.product-language-choice select:focus-visible{outline:3px solid #0b837c;outline-offset:3px}