:root{
  --ink-dark:#0B2B33;
  --ink-dark-muted:#3E6672;
  --ink-light:#F2FAFB;
  --ink-light-muted:#A9CDD5;
  --accent:#E8A93C;
  --accent-ink:#98620A;
  --line-dark:rgba(11,43,51,.16);
  --line-light:rgba(242,250,251,.16);
  --font-display:'Pretendard','JetBrains Mono',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,monospace;
  --wrap:1080px;
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font-display);
  line-height:1.6;
  background:linear-gradient(180deg,
    #E6F7F9 0%,
    #D3EEF3 45%,
    #BFE6EE 100%);
  color:var(--ink-dark);
  -webkit-font-smoothing:antialiased;
}

a{color:inherit;text-decoration:none;}
ul{list-style:none;}
img{max-width:100%;display:block;}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px;}

/* language toggle */
html[lang="en"] .ko{display:none;}
html[lang="ko"] .en{display:none;}

/* ===== nav ===== */
header.nav{
  position:sticky;top:0;z-index:20;
  backdrop-filter:blur(10px);
  background:rgba(217,241,244,.55);
  border-bottom:1px solid var(--line-dark);
}
header.nav .wrap{
  display:flex;align-items:center;justify-content:space-between;
  height:64px;
}
.logo{
  font-family:var(--font-mono);
  font-weight:700;
  letter-spacing:.08em;
  font-size:14px;
  color:var(--ink-dark);
}
.langtoggle{
  display:flex;gap:2px;
  border:1px solid var(--line-dark);
  border-radius:999px;
  padding:3px;
}
.langtoggle button{
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.06em;
  padding:6px 12px;border:0;border-radius:999px;
  background:transparent;color:var(--ink-dark-muted);
  cursor:pointer;transition:background .2s,color .2s;
}
.langtoggle button.active{
  background:var(--ink-dark);color:var(--ink-light);
}

.navlinks{
  display:flex;gap:24px;align-items:center;
}
.navlinks a{
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.08em;
  color:var(--ink-dark-muted);
  transition:color .2s;
}
.navlinks a:hover{color:var(--ink-dark);}
.navlinks a.active{color:var(--ink-dark);font-weight:700;}

/* ===== hero ===== */
section.hero{
  padding:96px 0 120px;
  color:var(--ink-dark);
}
.eyebrow{
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.14em;
  color:var(--ink-dark-muted);
  margin-bottom:22px;
}
h1.headline{
  font-size:clamp(38px,6vw,72px);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.08;
  max-width:14ch;
  margin-bottom:26px;
}
.hero p.sub{
  font-size:clamp(15px,2vw,18px);
  color:var(--ink-dark-muted);
  max-width:48ch;
  margin-bottom:40px;
}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 22px;border-radius:8px;
  font-size:14px;font-weight:600;
  transition:transform .15s ease, opacity .15s ease;
}
.btn-solid{background:var(--ink-dark);color:var(--ink-light);}
.btn-line{border:1px solid var(--ink-dark-muted);color:var(--ink-dark);}
.btn:hover{transform:translateY(-2px);opacity:.92;}

/* ===== about ===== */
section.about{padding:70px 0;color:var(--ink-dark);}
section.about .wrap{
  display:grid;grid-template-columns:1fr 1fr;gap:60px;
  border-top:1px solid var(--line-dark);
  padding-top:56px;
}
.label{
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.12em;
  color:var(--ink-dark-muted);
}
.about-text{font-size:17px;max-width:46ch;color:var(--ink-dark);}
.about-text b{color:var(--ink-dark);}

/* ===== programs ===== */
section.programs{padding:80px 0 60px;color:var(--ink-dark);}
section.programs .label{color:var(--ink-dark-muted);margin-bottom:8px;}
section.programs h2{
  font-size:clamp(26px,3.4vw,36px);
  font-weight:800;margin-bottom:52px;
}

ul.gauge{position:relative;padding-left:0;}
ul.gauge::before{
  content:"";position:absolute;left:35px;top:8px;bottom:8px;width:1px;
  background:var(--line-dark);
}
ul.gauge li{
  position:relative;
  display:grid;
  grid-template-columns:72px 1fr auto;
  align-items:start;
  gap:22px;
  padding:22px 0;
  border-bottom:1px solid var(--line-dark);
}
ul.gauge li:last-child{border-bottom:0;}

.gauge__depth-col{
  display:flex;flex-direction:column;
  padding-top:3px;
}
.gauge__depth{
  font-family:var(--font-mono);
  font-size:15px;font-weight:700;
  color:var(--accent-ink);
}
.gauge__sessions{
  font-family:var(--font-mono);
  font-size:11px;color:var(--ink-dark-muted);
  margin-top:2px;white-space:nowrap;
}
.gauge__dot{
  position:absolute;left:31px;top:26px;
  width:9px;height:9px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 4px rgba(232,169,60,.18);
}
.gauge__body h3{font-size:19px;font-weight:700;margin-bottom:6px;}
.gauge__body p{font-size:14px;color:var(--ink-dark-muted);max-width:46ch;line-height:1.5;}
.gauge__price{
  font-family:var(--font-mono);
  font-size:15px;font-weight:600;
  color:var(--ink-dark);
  padding-top:3px;
  white-space:nowrap;
}

.price-details-box{
  margin-top:28px;padding:18px 20px;
  background:rgba(255,255,255,.55);
  border:1px solid var(--line-dark);
  border-radius:8px;
  font-size:13px;color:var(--ink-dark-muted);
  display:flex;flex-direction:column;gap:8px;
}
.price-details-box strong{color:var(--ink-dark);font-weight:600;margin-right:8px;}

.tour-note{
  margin-top:20px;padding-top:20px;
  border-top:1px dashed var(--line-dark);
  font-size:14px;color:var(--ink-dark-muted);
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.tour-note strong{color:var(--ink-dark);font-weight:600;}

/* ===== contact ===== */
section.contact{padding:70px 0;color:var(--ink-dark);}
section.contact .wrap{border-top:1px solid var(--line-dark);padding-top:56px;}
section.contact .label{color:var(--ink-dark-muted);margin-bottom:18px;}
.contact-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:28px;
}
.contact-item dt{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--ink-dark-muted);margin-bottom:8px;
}
.contact-item dd{font-size:16px;font-weight:600;}
.contact-item a:hover{color:var(--accent-ink);}

/* ===== page header (subpages) ===== */
section.page-header{
  padding:64px 0 40px;
  color:var(--ink-dark);
  border-bottom:1px solid var(--line-dark);
}
.back-link{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  color:var(--ink-dark-muted);margin-bottom:18px;
}
.back-link:hover{color:var(--ink-dark);}
section.page-header h1{
  font-size:clamp(30px,4.4vw,44px);
  font-weight:800;letter-spacing:-.02em;
  margin-bottom:14px;
}
section.page-header p{
  font-size:15px;color:var(--ink-dark-muted);max-width:52ch;
}

/* ===== faq ===== */
section.faq{padding:60px 0 90px;color:var(--ink-dark);}
ul.faq-list{border-top:1px solid var(--line-dark);}
.faq-item{border-bottom:1px solid var(--line-dark);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;
  background:transparent;border:0;
  font-family:var(--font-display);
  font-size:16px;font-weight:600;
  color:var(--ink-dark);
  text-align:left;cursor:pointer;
}
.faq-icon{
  font-family:var(--font-mono);
  font-size:20px;color:var(--ink-dark-muted);
  flex-shrink:0;line-height:1;
  transition:transform .2s;
}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .25s ease;
}
.faq-a p{
  font-size:14px;line-height:1.7;color:var(--ink-dark-muted);
  padding:0 0 22px;max-width:60ch;
}
.faq-item.open .faq-a{max-height:500px;}

/* ===== instructor ===== */
section.instructor{padding:20px 0 90px;color:var(--ink-dark);}
.instructor-layout{
  display:grid;grid-template-columns:280px 1fr;gap:56px;align-items:start;
}
.instructor-photo img{
  width:100%;border-radius:12px;
  box-shadow:0 10px 28px rgba(11,43,51,.18);
}
.instructor-body .label{color:var(--ink-dark-muted);margin-bottom:10px;}
.instructor-subhead{padding-top:8px;border-top:1px solid var(--line-dark);}
.instructor-name{font-size:clamp(26px,3.2vw,34px);font-weight:800;margin-bottom:18px;}
.instructor-intro{font-size:15px;color:var(--ink-dark-muted);max-width:52ch;margin-bottom:28px;line-height:1.7;}
ul.instructor-facts{margin-bottom:32px;}
ul.instructor-facts li{
  position:relative;padding-left:20px;margin-bottom:14px;
  font-size:14px;line-height:1.6;color:var(--ink-dark-muted);max-width:56ch;
}
ul.instructor-facts li::before{
  content:"";position:absolute;left:0;top:9px;
  width:6px;height:6px;border-radius:50%;background:var(--accent);
}

@media (max-width:640px){
  .instructor-layout{grid-template-columns:1fr;}
  .instructor-photo{max-width:220px;}
}

/* ===== footer ===== */
footer{padding:44px 0 60px;color:var(--ink-light-muted);background:#1B4B5A;}
footer .wrap{border-top:1px solid var(--line-light);padding-top:32px;}
.biz-info{
  font-family:var(--font-mono);
  font-size:12px;line-height:2;
  display:flex;flex-wrap:wrap;gap:6px 18px;
  margin-bottom:18px;
}
.biz-info span{color:var(--ink-light-muted);}
.copyright{font-size:12px;opacity:.6;}

@media (max-width:720px){
  section.about .wrap{grid-template-columns:1fr;gap:28px;}
  .contact-grid{grid-template-columns:1fr;gap:22px;}
  ul.gauge li{grid-template-columns:56px 1fr;}
  .gauge__price{grid-column:2;padding-top:0;}
  .gauge__dot{left:23px;}
  ul.gauge::before{left:27px;}
  header.nav .wrap{height:auto;flex-wrap:wrap;padding:12px 0;row-gap:10px;}
  .navlinks{gap:12px;}
  .navlinks a{font-size:11px;letter-spacing:.04em;}
  .logo{font-size:13px;}
}

@keyframes rise{from{opacity:0;transform:translateY(14px);}to{opacity:1;transform:translateY(0);}}
.hero .eyebrow,.hero h1,.hero p.sub,.hero .cta-row{
  animation:rise .7s ease both;
}
.hero h1{animation-delay:.05s;}
.hero p.sub{animation-delay:.12s;}
.hero .cta-row{animation-delay:.18s;}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .hero .eyebrow,.hero h1,.hero p.sub,.hero .cta-row{animation:none;}
}

:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}

/* ===== process (how it works) ===== */
html[data-region="pohang"] [data-region-only="seoul"],
html[data-region="seoul"] [data-region-only="pohang"]{display:none !important;}

section.page-header .eyebrow{margin-bottom:14px;}
.badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px;}
.badge{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;
  padding:6px 12px;border-radius:999px;
  border:1px solid var(--line-dark);color:var(--ink-dark);
}
.regiontoggle{display:inline-flex;margin-top:26px;}
.regiontoggle button{font-family:var(--font-display);font-size:13px;font-weight:600;padding:8px 18px;}

section.process{
  padding:56px 0 90px;color:var(--ink-dark);
}
section.process .label{color:var(--ink-dark-muted);margin-bottom:16px;}
section.process h2{font-size:clamp(24px,3.2vw,32px);font-weight:800;margin-bottom:14px;}

ul.hl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:64px;}
.hl-card{
  padding:22px;border:1px solid var(--line-dark);border-radius:8px;
  background:rgba(255,255,255,.55);
}
.hl-card h3{font-size:16px;font-weight:700;margin-bottom:10px;line-height:1.4;}
.hl-card p{font-size:14px;color:var(--ink-dark-muted);line-height:1.6;}

.timeline-label{margin-bottom:8px;}
.region-intro{font-size:14px;color:var(--ink-dark-muted);margin-bottom:18px;}

ol.timeline{counter-reset:step;position:relative;}
ol.timeline::before{
  content:"";position:absolute;left:58px;top:8px;bottom:8px;width:1px;
  background:var(--line-dark);
}
li.step{
  counter-increment:step;position:relative;
  display:grid;grid-template-columns:72px 1fr;gap:22px;
  padding:24px 0;border-bottom:1px solid var(--line-dark);
}
li.step::before{
  content:"";position:absolute;left:54px;top:30px;
  width:9px;height:9px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 4px rgba(232,169,60,.18);
}
.step__num{
  font-family:var(--font-mono);font-weight:700;color:var(--accent-ink);
  font-size:15px;padding-top:3px;
}
.step__num::before{
  content:"STEP";display:block;
  font-size:10px;font-weight:500;letter-spacing:.1em;color:var(--ink-dark-muted);
}
.step__num::after{content:counter(step,decimal-leading-zero);}
.step__tags{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.04em;
  color:var(--ink-dark-muted);margin-bottom:8px;
}
.step__body h3{font-size:19px;font-weight:700;margin-bottom:8px;line-height:1.4;}
.step__body > p{font-size:14px;color:var(--ink-dark-muted);max-width:56ch;line-height:1.7;}
li.step--special .step__body{
  padding:18px 20px;border-radius:8px;
  border:1px solid rgba(200,135,20,.6);background:rgba(232,169,60,.16);
}
.special-badge{
  display:inline-block;margin-bottom:10px;
  font-family:var(--font-mono);font-size:10px;font-weight:700;letter-spacing:.12em;
  padding:4px 8px;border-radius:4px;background:var(--accent);color:var(--ink-dark);
}

ol.substeps{margin-top:6px;}
ol.substeps li{
  display:grid;grid-template-columns:76px 1fr;gap:14px;
  padding:12px 0;border-top:1px solid var(--line-dark);
  font-size:14px;color:var(--ink-dark-muted);line-height:1.6;
}
ol.substeps li:first-child{border-top:0;}
ol.substeps b{font-family:var(--font-mono);font-size:13px;color:var(--accent-ink);}

.process-note{margin-top:20px;font-size:13px;color:var(--ink-dark-muted);}
.process-note a{color:var(--ink-dark);text-decoration:underline;text-underline-offset:3px;}

.session-label{margin-top:72px;}
.session-intro{font-size:14px;color:var(--ink-dark-muted);max-width:56ch;margin-bottom:24px;}
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px;}
.tab{
  font-family:var(--font-display);font-size:13px;font-weight:600;
  padding:9px 16px;border-radius:999px;cursor:pointer;
  background:transparent;color:var(--ink-dark-muted);
  border:1px solid var(--line-dark);transition:background .2s,color .2s;
}
.tab.active{background:var(--ink-dark);color:var(--ink-light);border-color:var(--ink-dark);}
.tab-panel{
  display:none;padding:20px 22px;border-radius:8px;
  border:1px solid var(--line-dark);background:rgba(255,255,255,.55);
  font-size:14px;line-height:1.7;color:var(--ink-dark-muted);
}
.tab-panel.active{display:block;}
.tab-panel p + p{margin-top:8px;color:var(--ink-dark);}

.cta-banner{
  margin-top:72px;padding:32px;border-radius:12px;
  border:1px solid rgba(200,135,20,.6);background:rgba(232,169,60,.16);
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-banner h2{margin-bottom:6px;}
.cta-banner p{font-size:14px;color:var(--ink-dark-muted);}
.btn-accent{background:var(--accent);color:var(--ink-dark);}
.btn-line-light{border:1px solid var(--ink-dark-muted);color:var(--ink-dark);}

@media (max-width:720px){
  ul.hl-grid{grid-template-columns:1fr;}
  li.step{grid-template-columns:56px 1fr;gap:16px;}
  li.step::before{left:42px;}
  ol.timeline::before{left:46px;}
  ol.substeps li{grid-template-columns:1fr;gap:2px;}
  .cta-banner{padding:24px;}
}