:root {
  color-scheme: light;
  --ink: #152b23;
  --muted: #53665e;
  --green: #126441;
  --green-dark: #0b472d;
  --mint: #edf8f1;
  --wash: #f7faf8;
  --line: #d5e4db;
  --page: #fff;
  font-family: "Pretendard", "Noto Sans KR", "Malgun Gothic", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--page);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-wrap: anywhere; background: var(--page); }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-underline-offset: .25em; }
button { font: inherit; }
button:disabled { opacity: 1; }
a:focus-visible, button:focus-visible { outline: 3px solid #175fe1; outline-offset: 5px; border-radius: 4px; }
h1, h2, h3, p, ol, dl, figure { margin: 0; }
h1, h2, h3 { word-break: keep-all; overflow-wrap: anywhere; }
.page-width, .header-inner { width: min(1160px, calc(100% - 80px)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 20; left: 16px; top: 12px; padding: 12px 20px; color: #fff; background: var(--green-dark); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
.site-header { border-bottom: 1px solid var(--line); background: rgba(255,255,255,.96); }
.header-inner { min-height: 92px; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 16px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; font-weight: 800; letter-spacing: -.04em; line-height: 1.35; font-size: 1.1rem; }
.brand-mark { display: grid; place-items: center; width: 40px; height: 44px; flex: 0 0 40px; background: var(--green); color: #fff; border-radius: 4px 12px 4px 4px; font-size: 1.25rem; }
.brand small { display: block; margin-top: 5px; color: var(--muted); font-size: .75rem; font-weight: 500; letter-spacing: 0; }
.site-header nav { display: flex; gap: 28px; flex-wrap: wrap; }
.site-header nav a { display: inline-flex; align-items: center; min-height: 44px; font-size: .9rem; font-weight: 650; text-decoration: none; }
.site-header nav a:hover, .site-footer a:hover { color: var(--green); text-decoration: underline; }
.hero { display: grid; grid-template-columns: minmax(0, 1.22fr) minmax(310px, .78fr); align-items: center; gap: 86px; padding-block: 82px 92px; scroll-margin-top: 24px; }
.status-row { display: flex; align-items: center; flex-wrap: wrap; gap: 10px 13px; margin-bottom: 28px; }
.status-pill, .pending-pill { display: inline-flex; align-items: center; min-height: 28px; padding: 4px 10px; border: 1px solid #dfcc98; border-radius: 999px; color: #6c5018; background: #fff8df; font-size: .75rem; font-weight: 750; }
.status-text { color: var(--muted); font-size: .8125rem; }
.eyebrow { margin-bottom: 14px; color: var(--green); font-size: .8125rem; font-weight: 750; letter-spacing: .035em; }
h1 { font-size: clamp(2.45rem, 4.2vw, 4rem); line-height: 1.22; letter-spacing: -.06em; font-weight: 800; }
h1 em { color: var(--green); font-style: normal; }
.hero-description { max-width: 39em; margin-top: 26px; color: var(--muted); font-size: 1.0625rem; line-height: 1.85; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 32px; }
.button { min-height: 52px; padding: 13px 20px; display: inline-flex; justify-content: center; align-items: center; gap: 14px; border: 1px solid transparent; border-radius: 8px; font-size: .9375rem; line-height: 1.5; font-weight: 700; text-align: center; text-decoration: none; }
.button-primary { background: var(--green); color: #fff; transition: background-color .18s ease; }
.button-primary:hover { background: var(--green-dark); }
.button-secondary { color: var(--green-dark); background: #fff; border-color: #a9cbbb; transition: border-color .18s ease, background-color .18s ease; }
.button-secondary:hover { border-color: var(--green); background: var(--mint); }
.small-note { margin-top: 13px; color: var(--muted); font-size: .8125rem; }
.book-visual { justify-self: end; width: min(100%, 390px); }
.cover-frame { position: relative; padding: 24px 24px 29px; border: 1px solid var(--line); background: var(--wash); box-shadow: 0 24px 60px rgba(20,54,41,.12); }
.cover-frame::after { content: ""; position: absolute; left: 12%; right: 7%; bottom: -17px; height: 25px; background: rgba(11,71,45,.13); filter: blur(14px); z-index: -1; }
.cover-frame img { display: block; width: 100%; height: auto; aspect-ratio: 4 / 5.45; object-fit: cover; background: #e8f1eb; }
.book-visual figcaption { display: flex; justify-content: space-between; gap: 18px; margin-top: 26px; color: var(--muted); font-size: .75rem; }
.book-visual figcaption span { color: var(--green); font-weight: 800; letter-spacing: .08em; }
.book-visual figcaption strong { max-width: 17em; color: var(--ink); font-weight: 650; text-align: right; }
.workflow-section { padding-block: 72px 80px; border-block: 1px solid #e3ede7; background: var(--wash); scroll-margin-top: 24px; }
.section-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 48px; margin-bottom: 36px; }
.section-heading h2 { font-size: clamp(1.75rem, 2.8vw, 2.25rem); line-height: 1.4; letter-spacing: -.05em; }
.section-heading > p { max-width: 390px; color: var(--muted); font-size: .9375rem; }
.workflow-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); list-style: none; padding: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.workflow-card { min-height: 240px; padding: 28px 25px 30px; display: flex; flex-direction: column; justify-content: space-between; gap: 34px; background: #fff; }
.workflow-card + .workflow-card { border-left: 1px solid var(--line); }
.step-number { color: var(--green); font-size: .75rem; font-weight: 800; letter-spacing: .08em; }
.workflow-card h3 { margin-bottom: 11px; font-size: 1.2rem; letter-spacing: -.035em; }
.workflow-card p { color: var(--muted); font-size: .9rem; }
.fit-section { padding-block: 78px 82px; }
.fit-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.fit-grid article { padding: 30px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.fit-label { color: var(--green); font-size: .72rem; font-weight: 800; letter-spacing: .1em; }
.fit-grid h3 { margin: 20px 0 12px; font-size: 1.2rem; letter-spacing: -.035em; }
.fit-grid p { color: var(--muted); font-size: .9rem; }
.section-note { margin-top: 22px; color: var(--muted); font-size: .8125rem; }
.edition-section { padding-block: 76px; border-block: 1px solid #dce9e1; background: var(--mint); }
.edition-layout { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(320px, .75fr); gap: 82px; align-items: center; }
.edition-intro h2 { font-size: clamp(1.9rem, 3vw, 2.45rem); line-height: 1.3; letter-spacing: -.05em; }
.edition-intro > p:not(.eyebrow) { max-width: 42em; margin-top: 17px; color: var(--muted); }
.edition-intro dl { margin-top: 30px; border-top: 1px solid #c3decf; }
.edition-intro dl div { display: grid; grid-template-columns: 104px 1fr; gap: 18px; padding-block: 14px; border-bottom: 1px solid #c3decf; font-size: .9rem; }
.edition-intro dt { font-weight: 750; }
.edition-intro dd { margin: 0; color: var(--muted); }
.purchase-card { padding: 30px; border: 1px solid #bad7c7; border-radius: 14px; background: #fff; box-shadow: 0 18px 46px rgba(20,54,41,.08); }
.purchase-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; color: var(--green-dark); font-size: .9rem; font-weight: 750; }
.price { margin: 27px 0 0; font-size: 2.7rem; line-height: 1.2; font-weight: 800; letter-spacing: -.05em; font-variant-numeric: tabular-nums; }
.price span { margin-left: 5px; font-size: 1rem; font-weight: 650; }
.price-caption { margin-top: 4px; color: var(--muted); font-size: .8125rem; }
.purchase-card .button { width: 100%; margin-top: 28px; }
.button-disabled { color: #536158; background: #eaf0ec; border-color: #d4dfd8; cursor: not-allowed; }
.action-note { margin-top: 10px; color: var(--muted); font-size: .8125rem; text-align: center; }
.sample-link { display: flex; justify-content: center; gap: 8px; min-height: 44px; margin-top: 15px; align-items: center; color: var(--green); font-size: .875rem; font-weight: 700; }
.sample-section { padding-block: 68px; }
.sample-panel { display: grid; grid-template-columns: 1.35fr .65fr; gap: 60px; align-items: center; padding: 38px 42px; border: 1px solid var(--line); border-radius: 14px; }
.sample-panel h2 { font-size: 1.8rem; line-height: 1.4; letter-spacing: -.045em; }
.sample-panel p:not(.eyebrow) { max-width: 38em; margin-top: 12px; color: var(--muted); font-size: .9375rem; }
.sample-actions { display: flex; flex-direction: column; align-items: stretch; gap: 9px; }
.sample-actions .text-link { justify-content: center; }
.text-link { display: inline-flex; min-height: 44px; align-items: center; gap: 8px; color: var(--green); font-size: .9rem; font-weight: 700; }
.disclosure { padding-bottom: 72px; }
.disclosure h2 { margin-bottom: 24px; font-size: 1.25rem; letter-spacing: -.025em; }
.disclosure-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px; }
.disclosure h3 { margin-bottom: 8px; font-size: .9375rem; }
.disclosure p { color: var(--muted); font-size: .875rem; }
.site-footer { padding-block: 32px; border-top: 1px solid var(--line); background: var(--wash); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.site-footer strong { font-size: .9375rem; }
.site-footer p { margin-top: 4px; color: var(--muted); font-size: .8125rem; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 8px 22px; }
.site-footer a { min-height: 44px; display: inline-flex; align-items: center; color: var(--muted); font-size: .8125rem; text-decoration: none; }
@media (max-width: 960px) {
  .page-width, .header-inner { width: min(1160px, calc(100% - 48px)); }
  .hero { grid-template-columns: 1.25fr .75fr; gap: 44px; padding-block: 60px 68px; }
  h1 { font-size: 2.65rem; }
  .workflow-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .workflow-card:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .workflow-card:nth-child(4) { border-top: 1px solid var(--line); }
  .edition-layout { gap: 44px; }
  .sample-panel { gap: 32px; padding: 32px; }
}
@media (max-width: 700px) {
  .page-width, .header-inner { width: calc(100% - 40px); }
  .header-inner { min-height: 80px; gap: 10px; flex-wrap: wrap; }
  .brand { font-size: 1rem; }
  .brand-mark { width: 34px; height: 38px; flex-basis: 34px; }
  .site-header nav { width: 100%; gap: 14px; justify-content: flex-end; }
  .site-header nav a { min-height: 36px; font-size: .8125rem; }
  .hero { grid-template-columns: 1fr; gap: 44px; padding-block: 42px 54px; }
  .status-row { margin-bottom: 22px; }
  h1 { font-size: clamp(2rem, 9vw, 2.8rem); }
  h1 br { display: none; }
  .hero-description { margin-top: 21px; font-size: 1rem; }
  .hero-actions { margin-top: 25px; }
  .hero-actions .button { width: 100%; }
  .small-note { text-align: center; }
  .book-visual { justify-self: center; width: min(88%, 360px); }
  .workflow-section, .fit-section, .edition-section { padding-block: 50px; }
  .section-heading { display: block; margin-bottom: 25px; }
  .section-heading > p { max-width: none; margin-top: 15px; }
  .section-heading h2 { font-size: 1.7rem; }
  .workflow-grid, .fit-grid, .edition-layout, .sample-panel, .disclosure-grid { grid-template-columns: 1fr; }
  .workflow-card { min-height: 205px; padding: 24px; }
  .workflow-card + .workflow-card { border-left: 0; border-top: 1px solid var(--line); }
  .fit-grid { gap: 14px; }
  .fit-grid article { padding: 25px; }
  .edition-layout { gap: 30px; }
  .edition-intro dl div { grid-template-columns: 82px 1fr; }
  .purchase-card { padding: 25px; }
  .sample-section { padding-block: 44px; }
  .sample-panel { padding: 26px; gap: 25px; }
  .sample-actions .button { width: 100%; }
  .disclosure { padding-bottom: 46px; }
  .disclosure-grid { gap: 22px; }
  .footer-inner { align-items: flex-start; flex-direction: column; gap: 16px; }
  .site-footer nav { gap: 5px 19px; }
}
@media (max-width: 380px) {
  .purchase-top { align-items: flex-start; flex-direction: column; }
  .edition-intro dl div { grid-template-columns: 1fr; gap: 2px; }
  .book-visual figcaption { flex-direction: column; gap: 4px; }
  .book-visual figcaption strong { text-align: left; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
@media print {
  .skip-link, .site-header nav, .hero-actions, .button, .sample-actions { display: none; }
  .page-width, .header-inner { width: 100%; }
  .hero, .edition-layout, .sample-panel { grid-template-columns: 1fr; }
  .hero, .workflow-section, .fit-section, .edition-section, .sample-section, .disclosure { padding-block: 16px; }
  .workflow-card, .fit-grid article, .purchase-card, .sample-panel { break-inside: avoid; }
}