:root { color-scheme: light; --accent: #e99514; --ink: #171717; }
* { box-sizing: border-box; }
body { margin: 0; background: #fff; color: var(--ink); font-family: "Pretendard", "Noto Sans KR", "Malgun Gothic", sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 2px solid var(--ink); outline-offset: 6px; }
[hidden] { display: none !important; }
.site-header { max-width: 1280px; margin: 0 auto; padding: 30px 48px; display: flex; align-items: center; justify-content: space-between; gap: 32px; border-bottom: 1px solid #ededed; }
.brand { font-family: Arial, sans-serif; font-size: 30px; font-weight: 800; letter-spacing: -1.8px; white-space: nowrap; }
.brand > span { color: var(--accent); }
.brand > span > strong { -webkit-text-stroke: 0.7px currentColor; }
.brand-dot { margin-left: 2px; }
nav { display: flex; gap: 35px; align-items: center; }
nav a { font-size: 14px; padding: 12px 0; position: relative; white-space: nowrap; }
nav a::after { content: ""; position: absolute; height: 3px; bottom: 1px; left: 0; right: 0; background: var(--accent); transform: scaleX(0); }
nav a:hover::after, nav a[aria-current="page"]::after { transform: scaleX(1); }
main { max-width: 1280px; margin: auto; }
h1 { font-size: clamp(38px, 4.2vw, 58px); letter-spacing: -.065em; font-weight: 700; line-height: 1.45; margin: 0; word-break: keep-all; }
.home { max-width: 800px; margin: 0 auto; padding: 76px 40px 150px; }
.home h1 { font-size: 27px; font-weight: 600; letter-spacing: -.035em; line-height: 1.65; overflow-wrap: anywhere; }
.lesson-copy { margin-top: 36px; font-size: 16px; line-height: 1.95; color: #393939; word-break: keep-all; overflow-wrap: anywhere; }
.lesson-copy p { margin: 0 0 28px; }
.lesson-copy p.lesson-prepare { margin-bottom: 60px; }
.lesson-copy .lesson-lead { margin-bottom: 36px; padding-left: 18px; border-left: 2px solid #d8d8d8; color: #222; font-size: 18px; font-weight: 500; line-height: 1.85; letter-spacing: -.02em; }
.lesson-copy p:last-child { margin-bottom: 0; }
.lesson-copy .lesson-topic { margin-bottom: 6px; }
.curriculum { margin: 0 0 28px; }
.curriculum + .lesson-lead { margin-top: 60px; }
.curriculum summary { display: flex; align-items: center; gap: 8px; width: fit-content; padding: 5px 0; cursor: pointer; font-size: 13px; font-weight: 400; color: #686868; list-style: none; }
.curriculum summary:hover { color: var(--ink); }
.curriculum summary::-webkit-details-marker { display: none; }
.curriculum summary::after { content: "+"; font-size: 14px; font-weight: 400; color: currentColor; }
.curriculum[open] summary::after { content: "−"; }
.curriculum summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.curriculum-body { margin-top: 14px; padding: 4px 0 4px 16px; border-left: 1px solid #e5e5e5; }
.lesson-copy .curriculum-note { margin-bottom: 24px; color: #686868; font-size: 13px; }
.curriculum-weeks { list-style: none; margin: 0; padding: 0; }
.curriculum-weeks li { margin-bottom: 24px; padding-left: 16px; border-left: 2px solid #e99514; }
.curriculum h3 { margin: 0 0 8px; font-size: 16px; color: var(--ink); }
.curriculum-coaching { padding: 18px; background: #faf8f4; border-radius: 8px; }
.lesson-apply-link { display: inline-block; margin-top: 32px; padding: 6px 0; font-size: 16px; line-height: 1.8; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 5px; }
.lesson-apply-link span { display: inline-block; margin-left: 4px; }
.floating-apply { position: fixed; z-index: 10; left: 50%; bottom: max(24px, env(safe-area-inset-bottom)); transform: translateX(-50%); width: min(360px, calc(100% - 48px)); margin-top: 0; padding: 14px 24px; border: 1px solid var(--ink); border-radius: 12px; background: var(--ink); color: #fff; text-align: center; text-decoration: none; box-shadow: 0 8px 24px rgba(0, 0, 0, .16); }
.floating-apply:hover { background: var(--accent); border-color: var(--accent); }
.floating-apply:focus-visible { outline-color: var(--accent); outline-offset: 4px; }
.inner-page { padding: 85px 72px; min-height: calc(100svh - 190px); }
.inner-page:not(.detail-view) > h1 { display: none; }
.inner-page h1 span { color: var(--accent); }
.inner-page h1 { overflow-wrap: anywhere; }
.public-content { max-width: 760px; margin-top: 32px; }
#columns:not(.detail-view) { padding-top: 24px; }
#columns:not(.detail-view) > .public-content { margin-top: 0; }
.column-list { border-top: 1px solid #ddd; }
.column-row, .resource-entry { padding: 24px 0; border-bottom: 1px solid #e5e5e5; }
.column-row h2, .resource-entry h2 { margin: 0 0 10px; font-size: 19px; font-weight: 600; line-height: 1.6; overflow-wrap: anywhere; }
.column-row h2 a:hover { text-decoration: underline; text-underline-offset: 4px; }
.content-meta { color: #777; font-size: 13px; line-height: 1.8; margin: 12px 0; }
.article-body { margin: 28px 0; white-space: pre-wrap; overflow-wrap: anywhere; color: #393939; font-size: 16px; line-height: 1.95; }
.back-to-columns, .resource-files a { font-size: 14px; text-decoration: underline; text-underline-offset: 4px; }
.back-to-columns { position: sticky; top: 0; z-index: 2; display: flex; align-items: center; min-height: 48px; margin-bottom: 22px; padding: 12px 0; background: #fff; border-bottom: 1px solid #ededed; }
.back-to-columns:focus-visible { outline-offset: -2px; }
.resource-files { padding-left: 20px; line-height: 2; overflow-wrap: anywhere; }
.faq-entry { padding: 22px 0; border-bottom: 1px solid #e5e5e5; }
.faq-entry summary { cursor: pointer; font-weight: 600; line-height: 1.8; overflow-wrap: anywhere; }
.faq-entry summary:focus-visible, .retry-content:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; }
.content-message { color: #686868; font-size: 14px; line-height: 1.8; }
.retry-content { padding: 10px 16px; border: 1px solid #ccc; background: white; font: inherit; font-size: 14px; cursor: pointer; }
.application-intro { max-width: 680px; margin-top: 36px; color: #393939; font-size: 16px; line-height: 1.95; word-break: keep-all; overflow-wrap: anywhere; }
.application-intro p { margin: 0 0 24px; }

.empty-state { margin-top: 48px; border-top: 1px solid var(--ink); border-bottom: 1px solid #ededed; padding: 82px 16px; text-align: center; color: #686868; font-size: 15px; line-height: 1.8; }
footer { max-width: 1184px; margin: 0 auto; padding: 25px 24px 30px; border-top: 1px solid #ededed; display: flex; justify-content: space-between; font-size: 12px; color: #686868; }
footer a { color: var(--ink); font-weight: 700; }
@media (max-width: 900px) { .site-header { padding: 24px 30px; } nav { gap: 24px; } .inner-page { padding: 65px 36px; } }
@media (max-width: 640px) {
  .site-header { padding: 23px 24px 0; flex-direction: column; align-items: flex-start; gap: 19px; }
  .brand { font-size: 28px; }
  nav { width: 100%; justify-content: space-between; gap: 12px; }
  nav a { font-size: 13px; padding: 12px 0 17px; }
  .home { padding: 44px 24px 140px; }
  .home h1 { font-size: 23px; }
  .lesson-copy { margin-top: 28px; font-size: 15px; line-height: 1.9; }
  .lesson-copy p { margin-bottom: 25px; }
  .lesson-copy .lesson-lead { margin-bottom: 30px; padding-left: 14px; font-size: 16px; }
  .inner-page { padding: 54px 24px; min-height: calc(100svh - 204px); }
  .inner-page h1 { font-size: clamp(35px, 9vw, 48px); }
  .empty-state { margin-top: 30px; padding: 65px 8px; font-size: 14px; }
  footer { margin: 0 24px; padding: 23px 0; }
}
@media (prefers-reduced-motion: reduce) { *, *::after { transition: none !important; } }