:root {
  --orange: #eb5b22;
  --orange-deep: #bd3e0b;
  --ink: #20241f;
  --muted: #60655e;
  --line: #e0e3dc;
  --soft: #f5f6f2;
  --green: #28624b;
  --page-width: 480px;
  --header-height: 64px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  background: #e9ece8;
  color: var(--ink);
  font-family: "Segoe UI", "Noto Sans KR", "Malgun Gothic", "Apple SD Gothic Neo", sans-serif;
  font-size: 14px;
  line-height: 1.9;
  letter-spacing: 0;
  word-break: keep-all;
  overflow-wrap: break-word;
}
.page-shell { width: min(100%, var(--page-width)); margin-inline: auto; padding-bottom: calc(80px + env(safe-area-inset-bottom)); background: white; }
.container { width: calc(100% - 40px); margin-inline: auto; }
h1, h2, h3, p, figure { margin: 0; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button { font: inherit; cursor: pointer; }
button, a { -webkit-tap-highlight-color: transparent; }
button, a, summary { touch-action: manipulation; }
:focus-visible { outline: 3px solid #1768a0; outline-offset: 4px; }
[hidden] { display: none !important; }
.skip-link { position: fixed; top: -100px; padding: 12px; z-index: 100; background: white; }
.skip-link:focus { top: 10px; }

.site-header { position: sticky; top: 0; z-index: 30; background: white; border-bottom: 1px solid var(--line); }
.header-inner { height: var(--header-height); display: flex; align-items: center; gap: 12px; }
.brand { display: inline-flex; align-items: center; gap: 5px; white-space: nowrap; font-size: 22px; line-height: 1; font-weight: 850; }
.brand-symbol { color: var(--orange); font-size: 28px; font-weight: 900; }
.brand-dot { color: var(--orange); }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 18px; min-height: 52px; padding: 13px 18px; border: 1px solid transparent; border-radius: 4px; background: var(--orange); color: white; font-size: 14px; font-weight: 750; line-height: 1.6; text-align: center; transition: background .18s; }
.button:hover { background: var(--orange-deep); }
.button span[aria-hidden] { flex: 0 0 auto; font-size: 21px; line-height: 1; }
.header-cta { margin-left: auto; min-height: 39px; padding: 8px 12px; gap: 9px; font-size: 12px; }
.header-cta span[aria-hidden] { font-size: 17px; }
.menu-toggle { display: flex; align-items: center; justify-content: center; flex: 0 0 37px; width: 37px; height: 37px; padding: 0; border: 1px solid var(--line); border-radius: 4px; background: white; font-size: 22px; line-height: 1; }
.navigation { display: none; position: absolute; top: var(--header-height); left: 0; right: 0; padding: 12px 20px; background: white; border-bottom: 1px solid var(--line); }
.navigation.is-open { display: flex; flex-direction: column; }
.navigation a { padding: 11px 0; font-size: 14px; font-weight: 650; }
.navigation a:hover, .inline-cta:hover { color: var(--orange-deep); }

.product-section { background: white; }
.poster-link { display: block; }
.curriculum-poster { width: 100%; height: auto; }
.poster-action { padding-block: 18px 26px; }
.poster-action .button { width: 100%; }
.hero { background: #fff4ed; border-block: 1px solid #f0d8c8; }
.hero-inner { padding-block: 38px 40px; }
.eyebrow { color: var(--orange-deep); font-size: 11px; font-weight: 700; }
h1 { font-size: 33px; line-height: 1.45; font-weight: 800; margin-top: 15px; }
.orange-dot { color: var(--orange); }
.hero-lead { margin-top: 20px; font-size: 16px; font-weight: 700; line-height: 1.9; }
.hero-description { margin-top: 15px; color: #575b53; font-size: 14px; line-height: 2; }
.hero-actions { display: flex; flex-direction: column; align-items: flex-start; gap: 17px; margin-top: 24px; }
.hero-actions .button { width: 100%; }
.text-link { display: inline-flex; align-items: center; gap: 14px; font-size: 13px; font-weight: 650; border-bottom: 1px solid currentColor; padding-bottom: 3px; }

.section { padding-block: 45px; }
.section-label { color: var(--orange-deep); font-size: 11px; font-weight: 750; margin-bottom: 12px; }
h2 { font-size: 25px; line-height: 1.5; font-weight: 760; }
.section-heading { margin-bottom: 24px; }
.heading-aside { margin-top: 16px; color: var(--muted); font-size: 14px; line-height: 1.95; }
.course-tabs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-bottom: 1px solid var(--line); }
.course-tabs button { min-width: 0; min-height: 67px; padding: 12px 2px; border: 0; border-bottom: 3px solid transparent; background: transparent; color: var(--muted); font-size: 12px; font-weight: 700; white-space: nowrap; }
.course-tabs button > span { display: block; margin-bottom: 3px; font-size: 10px; }
.course-tabs button[aria-selected=true] { border-color: var(--orange); color: var(--orange-deep); }
.course-tabs button:hover { background: var(--soft); }
.course-panel { display: grid; grid-template-columns: minmax(0, 1fr); align-content: start; gap: 24px; min-height: 620px; padding: 26px 22px; background: var(--soft); border-bottom: 1px solid var(--line); --course-accent: var(--orange-deep); }
.course-panel[data-tone=conversation] { --course-accent: #28624b; }
.course-panel[data-tone=jlpt] { --course-accent: #754095; }
.course-panel[data-tone=business] { --course-accent: #275576; }
.course-category { color: var(--course-accent); font-size: 12px; font-weight: 700; margin-bottom: 10px; }
.course-copy h3 { min-height: 76px; font-size: 26px; line-height: 1.45; font-weight: 750; }
.course-copy > p:not(.course-category) { min-height: 82px; margin-top: 15px; color: var(--muted); font-size: 14px; line-height: 1.95; }
.inline-cta { display: inline-flex; align-items: center; gap: 13px; border-bottom: 1px solid currentColor; padding-block: 6px 4px; font-size: 13px; font-weight: 750; line-height: 1.8; }
.course-copy > .inline-cta { margin-top: 16px; color: var(--course-accent); }
.course-detail { border-top: 1px solid #d9ded3; padding-top: 22px; }
.course-book { color: var(--course-accent); font-size: 18px; font-weight: 750; }
.course-detail ul { display: grid; gap: 9px; list-style: none; margin: 14px 0; padding: 0; font-size: 13px; }
.course-detail li { position: relative; padding-left: 16px; }
.course-detail li:before { content: ""; position: absolute; top: 10px; left: 0; width: 5px; height: 5px; background: var(--course-accent); }
.course-fit { font-size: 12px; line-height: 1.9; color: var(--muted); }
.noscript-note { margin-top: 15px; font-size: 13px; }

.approach-section { background: var(--soft); }
.approach-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 30px; }
.learning-image { width: 100%; aspect-ratio: 1; overflow: hidden; }
.learning-image img { width: 100%; height: 100%; object-fit: contain; }
.section-description { color: var(--muted); font-size: 14px; line-height: 2; margin-top: 18px; }
.approach-list { margin: 23px 0 0; }
.approach-list > div { border-top: 1px solid #d8ddd3; padding: 17px 0; }
.approach-list dt { font-size: 14px; font-weight: 750; }
.approach-list dt span { display: inline-block; width: 29px; color: var(--orange-deep); font-size: 11px; }
.approach-list dd { margin: 6px 0 0 29px; color: var(--muted); font-size: 13px; line-height: 1.9; }

.local-section { background: #edf3ef; }
.local-description { margin-top: 20px; color: #45544b; font-size: 14px; line-height: 2; }
.local-consult { margin-top: 20px; border-top: 1px solid #ccd9ce; padding-top: 7px; }
.local-consult .inline-cta { color: var(--green); margin-top: 14px; }
.faq-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 26px; }
.faq-list { border-top: 1px solid var(--ink); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 15px; list-style: none; padding: 21px 0; font-size: 14px; font-weight: 700; cursor: pointer; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary > span { flex: 0 0 20px; color: var(--orange-deep); font-family: Arial, sans-serif; font-size: 23px; font-weight: 400; text-align: center; }
.faq-list details[open] summary > span { transform: rotate(45deg); }
.faq-list details p { padding: 0 10px 22px 0; color: var(--muted); font-size: 13px; line-height: 2; }

.contact-section { background: var(--orange); color: white; padding: 48px 0; text-align: center; }
.contact-section .section-label { color: white; }
.contact-section h2 { font-size: 31px; line-height: 1.5; }
.contact-inner > p:not(.section-label) { margin-top: 18px; font-size: 14px; }
.button-dark { width: 100%; margin-top: 25px; background: var(--ink); font-size: 13px; gap: 12px; }
.button-dark:hover { background: #363d32; }
.site-footer { background: white; padding-block: 28px; }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; }
.footer-inner > p { font-size: 11px; }
.footer-inner > p > span { display: none; }
.footer-inner > a:last-child { margin-left: auto; color: var(--muted); font-size: 11px; white-space: nowrap; }
.footer-regions { display: flex; flex-wrap: wrap; gap: 10px 24px; margin-top: 18px; border-top: 1px solid var(--line); padding-top: 13px; font-size: 12px; color: var(--muted); }
.station-context { margin-top: 16px; color: var(--muted); font-size: 12px; }
.service-notice { margin-top: 12px; padding-left: 12px; border-left: 3px solid var(--orange); color: #45544b; font-size: 12px; line-height: 1.9; }
.station-guide { margin-top: 24px; border-top: 1px solid #ccd9ce; }
.station-guide h3 { margin-top: 23px; font-size: 16px; line-height: 1.7; }
.station-guide p, .station-guide ul { margin-top: 12px; color: #45544b; font-size: 13px; line-height: 2; }
.station-guide ul { padding-left: 20px; }
.station-guide li + li { margin-top: 7px; }
.station-guide details { margin-top: 24px; border-block: 1px solid #ccd9ce; padding-block: 16px; }
.station-guide summary { cursor: pointer; font-size: 14px; font-weight: 700; }
.station-line { display: block; margin-top: 2px; color: var(--muted); font-size: 11px; font-weight: 400; }
.directory-switch { display: flex; gap: 24px; margin-top: 20px; border-bottom: 1px solid var(--line); }
.directory-switch a { padding-block: 8px; border-bottom: 2px solid transparent; font-size: 13px; }
.directory-switch a[aria-current=page] { border-color: var(--orange); color: var(--orange-deep); font-weight: 750; }
.directory-heading { padding-block: 32px 24px; }
.directory-heading h1 { margin-top: 0; font-size: 30px; }
.directory-heading .inline-cta { margin-top: 12px; }
.directory-count { color: var(--muted); font-size: 12px; }
.directory-list { padding-block: 22px 28px; min-height: 220px; }
.region-group { border-bottom: 1px solid var(--line); }
.region-group > summary { display: flex; align-items: center; justify-content: space-between; min-height: 64px; gap: 16px; cursor: pointer; list-style: none; font-size: 18px; font-weight: 750; }
.region-group > summary::-webkit-details-marker { display: none; }
.region-group > summary > span { font-size: 12px; font-weight: 400; color: var(--muted); }
.region-group > summary > span > span[aria-hidden] { display: inline-block; margin-left: 12px; font-size: 20px; color: var(--orange-deep); }
.region-group[open] > summary > span > span[aria-hidden] { transform: rotate(45deg); }
.province-link { display: block; padding: 0 0 11px; font-size: 12px; color: var(--orange-deep); }
.region-links { list-style: none; padding: 0; margin: 0; }
.region-links li { border-top: 1px solid var(--line); }
.region-links a { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 54px; padding-block: 13px; font-size: 14px; }
.region-links a > span[aria-hidden] { color: var(--orange-deep); flex: 0 0 auto; }
.region-links a:hover { color: var(--orange-deep); }
.fixed-contact { position: fixed; bottom: 0; left: 50%; transform: translateX(-50%); z-index: 25; width: min(100%, var(--page-width)); padding: 12px 0 calc(12px + env(safe-area-inset-bottom)); background: white; border-top: 1px solid var(--line); box-shadow: 0 -3px 18px #18201b09; }
.fixed-inner { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.fixed-inner strong { display: block; max-width: 200px; font-size: 12px; line-height: 1.7; }
.fixed-inner > div > span { display: none; }
.fixed-inner .button { min-width: 115px; min-height: 48px; padding: 10px 15px; gap: 15px; font-size: 13px; }

@media (max-width: 360px) {
  .container { width: calc(100% - 32px); }
  .header-inner { gap: 8px; }
  .brand { font-size: 20px; }
  .brand-symbol { font-size: 26px; }
  h1 { font-size: 28px; }
  h2 { font-size: 23px; }
  .hero-lead { font-size: 15px; }
  .button { font-size: 12px; gap: 14px; }
  .course-tabs button { font-size: 11px; }
  .course-panel { min-height: 690px; padding-inline: 18px; }
  .course-copy h3 { font-size: 24px; }
  .course-copy > p:not(.course-category) { min-height: 109px; }
  .contact-section h2 { font-size: 28px; }
  .button-dark { font-size: 12px; padding-inline: 12px; gap: 10px; }
  .fixed-inner strong { max-width: 150px; font-size: 10px; }
  .fixed-inner .button { min-width: 105px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *:before, *:after { transition: none !important; }
}