@font-face {
  font-family: Pretendard;
  src: url('assets/PretendardVariable.woff2') format('woff2');
  font-weight: 100 900;
  font-display: swap;
}
:root { --ink:#161b32; --muted:#535c70; --blue:#2556ea; --line:#e5e7ef; --light:#f7f8fc; }
body { font-family:Pretendard,'Malgun Gothic',sans-serif; font-size:18px; line-height:1.85; letter-spacing:-.015em; -webkit-font-smoothing:antialiased; }
header { padding:18px max(32px,calc((100% - 1180px)/2)); gap:32px; }
.review-bar { font-size:12px; padding:5px 20px; background:#f0f1f8; color:#666d80; letter-spacing:0; }
.brand { font-size:24px; letter-spacing:-1px; font-weight:850; }
.brand small { font-size:11px; font-weight:500; margin-top:6px; }
nav { gap:26px; }
nav a { font-size:14px; font-weight:600; }
.button { border-radius:12px; font-size:16px; font-weight:650; padding:18px 28px; gap:24px; box-shadow:0 5px 14px #2556ea12; transition:background .15s; }
.compact { padding:12px 20px; font-size:14px; border-radius:9px; }
.eyebrow { font-size:12px; line-height:1.6; letter-spacing:.18em; font-weight:650; }
.hero { padding:32px 32px 56px; background:linear-gradient(180deg,#fff 35%,#f6f7fc); text-align:center; }
.hero-copy { max-width:940px; margin:0 auto; }
.hero .eyebrow { margin-bottom:30px; }
.hero h3:first-of-type { margin:0 auto 24px; max-width:640px; font-size:18px; line-height:1.7; letter-spacing:-.025em; font-weight:500; color:var(--muted); }
.hero h3:first-of-type strong { font-weight:600; }
.hero h3:first-of-type br { display:none; }
.hero h1 { margin:0 auto 28px; font-size:clamp(40px,4.3vw,60px); font-weight:780; letter-spacing:-.055em; line-height:1.24; text-wrap:balance; }
.hero h1 span { color:var(--blue); text-decoration:none; }
.hero p { font-size:17px; line-height:1.8; margin:14px auto; max-width:680px; color:#626a7b; }
.hero p strong { font-weight:550; color:#525b70; }
.hero .cta { margin:30px auto 0; }
.cta p { font-size:13px; line-height:1.7; color:#737c8d; margin-top:14px; }
.hero-bottom { max-width:1080px; margin:52px auto 0; }
.hero .callout { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:0; text-align:left; padding:0; margin:0; max-width:none; background:white; border:1px solid var(--line); border-radius:16px; box-shadow:0 12px 36px #1a204207; overflow:hidden; }
.hero .callout h4 { grid-column:1/-1; padding:19px 26px; margin:0; font-size:15px; letter-spacing:-.02em; border-bottom:1px solid var(--line); }
.hero .callout p { padding:20px 26px; margin:0; font-size:15px; line-height:1.7; border-right:1px solid var(--line); }
.hero .callout p:nth-child(3n+1) { border-right:0; }
.hero .callout p:nth-child(n+5) { border-top:1px solid var(--line); }
.hero .callout p>strong:first-child { display:block; font-size:13px; font-weight:600; color:var(--blue); margin-bottom:7px; }
.hero .callout p strong { color:var(--ink); font-weight:650; }
.hero .callout.yellow { background:#fff; border:1px solid var(--line); }
.hero figure { width:420px; max-width:100%; margin:28px auto; mix-blend-mode:normal; }
.hero figure img { border-radius:0; clip-path:inset(2%); }
article { max-width:none; padding:0; }
.chapter { padding:96px 32px; border-top:1px solid var(--line); }
.chapter:nth-child(even) { background:#f7f8fc; }
.chapter-inner { max-width:1080px; margin:auto; }
.chapter-inner>p,.chapter-inner>h3,.chapter-inner>h4,.chapter-inner>ul,.chapter-inner>hr { max-width:720px; margin-left:auto; margin-right:auto; }
.chapter-inner>p { margin-top:12px; margin-bottom:12px; }
.chapter p,.chapter li { line-height:1.8; text-wrap:pretty; }
.chapter p { color:#485267; }
.chapter h3+p,.chapter h4+p { margin-top:0; }
.chapter h3 { margin-top:44px; margin-bottom:16px; }
.chapter h4 { margin-top:28px; margin-bottom:14px; }
.chapter .callout>p:first-child { margin-top:0; }
.chapter .callout>p:last-child { margin-bottom:0; }
.chapter .callout p+p { margin-top:12px; }
h2 { font-size:38px; font-weight:740; letter-spacing:-.045em; line-height:1.4; text-wrap:balance; }
.chapter-inner>h2 { max-width:820px; margin:0 auto 44px; text-align:center; }
h3 { font-size:26px; line-height:1.5; font-weight:700; letter-spacing:-.035em; margin-top:56px; margin-bottom:22px; text-wrap:pretty; }
h4 { font-size:21px; line-height:1.6; letter-spacing:-.025em; font-weight:650; }
strong { font-weight:650; }
hr { display:none; }
.chapter figure { max-width:920px; margin:36px auto; }
.chapter figure img { max-height:600px; border-radius:12px; }
.chapter-inner>h2+figure { max-width:820px; }
.callout { max-width:800px; margin:32px auto; padding:28px 32px; border:0; border-radius:12px; background:#f1f2f8; }
.callout p { font-size:17px; }
.callout.yellow { background:#eef3ff; border-left:3px solid #2556ea; }
.section-title:has(h2),.yellow:has(h2) { max-width:860px; margin:0 auto 44px; padding:0; background:none; border:0; text-align:center; }
.section-title:not(:has(h2)) { padding:28px 32px; margin:32px auto; }
.section-title h2,.yellow h2 { margin:0; }
span[color="blue_bg"] { background:transparent; color:var(--ink); }
span[underline="true"] { text-decoration:none; }
.timeline { max-width:800px; margin:48px auto 0; background:transparent; border-left:1px solid #d5d5e8; border-radius:0; padding:0 0 0 36px; }
.timeline h4 { position:relative; color:var(--blue); margin-top:48px; margin-bottom:18px; font-size:20px; }
.timeline h4:before { content:''; position:absolute; width:9px; height:9px; background:var(--blue); border:5px solid white; box-sizing:content-box; border-radius:50%; left:-46px; top:5px; }
.timeline p { margin:12px 0; }
.timeline figure { margin:26px 0; }
.chapter ul { list-style:disc; padding-left:1.4em; }
.chapter-inner>ul { margin-top:16px; margin-bottom:24px; }
.chapter ul li { border:0; padding:0 0 0 4px; margin:8px 0; font-size:17px; }
.chapter ul li::marker { color:var(--blue); font-size:.85em; }
.chapter ul li:first-child { margin-top:0; }
.chapter ul li:last-child { margin-bottom:0; }
.chapter-inner>h3+ul { margin-top:12px; }
.chapter mark { padding:2px 6px; border-radius:4px; }
.curriculum-detail>h3 { margin-bottom:8px; }
.curriculum-detail>p { margin-top:0; }
.week>p { margin:16px 0 8px; }
.cta { margin:40px auto 0; }
.tablewrap { margin:32px 0; border-radius:12px; background:white; }
table { font-size:15px; line-height:1.7; }
td,th { padding:20px 24px; }
th { background:#f0f1f7; color:#414961; font-size:13px; font-weight:650; }
td strong { font-weight:650; }
details { padding:24px 28px; border-radius:12px; margin:24px 0; }
summary { font-size:17px; font-weight:650; letter-spacing:-.02em; }
.week { padding:24px; background:#fff; }
.week summary { color:var(--ink); }
.week summary small { float:right; font-size:13px; font-weight:450; }
.week[open] { border-color:#a6bbf7; box-shadow:0 5px 20px #171c3b04; }
.closing { background:#171c3b; border-radius:20px; padding:64px 36px; margin:72px 0 0; text-align:center; }
.closing h2 { color:white; font-size:34px; max-width:700px; margin:0 auto; }
.closing p { color:#c0c4dd; }
.closing .cta { margin-top:32px; }
.application { background:#fff; padding:96px max(24px,calc((100% - 800px)/2)); margin:0; border-top:1px solid var(--line); }
.application h2 { font-size:38px; margin:16px 0; }
.application>.intro { font-size:17px; }
.application>.eyebrow { margin-bottom:16px; }
.draft-note { font-size:14px; line-height:1.7; background:#f3f3fa; color:#676b82; border-radius:10px; padding:18px 22px; }
form { border-radius:16px; padding:40px; box-shadow:0 12px 48px #17204005; }
fieldset { padding-bottom:32px; margin-bottom:32px; }
legend { font-size:20px; letter-spacing:-.02em; font-weight:650; }
label { font-weight:550; font-size:15px; }
input:not([type="radio"]):not([type="checkbox"]),select { font-size:16px; border-radius:8px; padding:13px 14px; }
.upload { border-width:1px; padding:24px; }
form p,form li { font-size:15px; line-height:1.8; }
footer { padding:40px 24px; }
footer strong { color:white; letter-spacing:.04em; font-size:16px; }
@media(min-width:1600px) { .hero { padding-top:100px; } }
@media(max-width:1050px) { header { gap:20px; padding:16px 28px; } nav { gap:18px; } .brand small { display:none; } .hero h1 { font-size:50px; } }
@media(max-width:800px) {
  body { font-size:17px; line-height:1.85; }
  html { scroll-padding-top:92px; }
  header { padding:14px 24px; }
  .brand { font-size:21px; }
  .compact { padding:11px 15px; font-size:13px; }
  .review-bar { font-size:11px; line-height:1.5; padding:6px 20px; }
  .hero { padding:48px 24px 32px; text-align:left; }
  .hero-copy { max-width:540px; }
  .hero .eyebrow { font-size:10px; letter-spacing:.1em; margin:0 0 24px; }
  .hero h3:first-of-type { font-size:15px; line-height:1.7; margin:0 0 20px; max-width:360px; }
  .hero h1 { font-size:clamp(30px,8vw,40px); letter-spacing:-.045em; line-height:1.32; margin:0 0 24px; text-wrap:pretty; }
  .desktop-break { display:none; }
  .hero h1 span { display:inline; }
  .hero p { font-size:15px; line-height:1.8; margin:12px 0; }
  .hero .cta { text-align:left; margin-top:24px; }
  .hero .cta p { font-size:12px; }
  .hero-bottom { max-width:540px; margin-top:36px; }
  .hero .callout { grid-template-columns:1fr 1fr; }
  .hero .callout h4 { padding:16px 20px; }
  .hero .callout p { padding:16px 20px; font-size:14px; border:0; margin:0; }
  .hero .callout p:nth-child(n+4) { border-top:1px solid var(--line); }
  .hero .callout p:nth-child(even) { border-right:1px solid var(--line); }
  .hero .callout p>strong:first-child { font-size:12px; }
  .hero figure { width:320px; margin:28px auto; }
  .chapter { padding:60px 24px; }
  .chapter-inner>h2,.section-title:has(h2),.yellow:has(h2) { text-align:left; margin-bottom:28px; }
  h2 { font-size:28px; line-height:1.45; letter-spacing:-.035em; }
  h3 { font-size:23px; line-height:1.5; margin-top:38px; margin-bottom:18px; }
  h4 { font-size:19px; line-height:1.6; }
  .chapter figure { margin:28px auto; }
  .chapter figure img { border-radius:8px; }
  .callout,.section-title:not(:has(h2)) { margin:28px auto; padding:22px; }
  .callout p { font-size:16px; }
  .timeline { padding:0 0 0 22px; margin-top:32px; }
  .timeline h4 { font-size:18px; margin-top:32px; }
  .timeline h4:before { left:-32px; }
  .chapter-inner>ul li { font-size:16px; line-height:1.8; }
  .cta { margin-top:28px; text-align:left; }
  .button { font-size:15px; padding:16px 20px; border-radius:10px; }
  .tablewrap { margin:24px 0; }
  details { padding:20px; }
  summary { font-size:16px; }
  .week { padding:18px; }
  .week summary small { float:none; margin-top:6px; }
  .week tr { padding:16px; }
  .week td { line-height:1.8; }
  .chapter-inner>.tablewrap table { min-width:0; }
  .chapter-inner>.tablewrap thead { display:none; }
  .chapter-inner>.tablewrap tr { display:grid; grid-template-columns:1fr; padding:18px 20px; border-bottom:1px solid var(--line); }
  .chapter-inner>.tablewrap td { display:block; padding:3px 0; border:0; }
  .chapter-inner>.tablewrap td:first-child { color:var(--blue); font-size:13px; font-weight:650; }
  .chapter-inner>.tablewrap td:last-child { color:#747d90; font-size:13px; }
  .closing { padding:36px 24px; border-radius:14px; margin-top:44px; text-align:left; }
  .closing h2 { font-size:26px; line-height:1.5; }
  .application { padding:60px 24px; }
  .application h2 { font-size:29px; }
  form { padding:24px 20px; }
  .draft-note { padding:16px 18px; font-size:13px; }
  legend { font-size:19px; }
  .methods { gap:16px; padding:16px 12px; }
  .methods label { font-size:14px; }
  .mobile-cta { bottom:12px; left:20px; right:20px; padding:15px; border-radius:12px; }
  footer { padding-bottom:100px; }
}
@media(prefers-reduced-motion:reduce) { .button { transition:none; } }
.chapter-2 .callout:has(#section-10) { text-align:left; padding:8px .5em; background:#eef3ff; border-left:3px solid #2556ea; }
#section-10 { text-align:left; text-wrap:initial; }
.chapter .timeline { padding:0 0 0 24px; border:0; border-left:1px solid #d5dbe7; background:transparent; max-width:760px; margin:32px auto; }
.history-entry { position:relative; background:#f3f4f6; border-radius:12px; padding:24px 28px; margin:14px 0; }
.history-entry::before { content:''; position:absolute; left:-30px; top:29px; width:10px; height:10px; border-radius:50%; background:var(--blue); box-shadow:0 0 0 4px white; }
.chapter .history-entry h4 { font-size:18px; line-height:1.55; margin:0 0 14px; }
.history-entry h4::before { content:none; }
.chapter .history-entry p { font-size:16px; line-height:1.75; margin:10px 0; }
.history-entry p:last-child { margin-bottom:0; }
.chapter .history-entry figure { margin:20px 0 0; }
.chapter-2 .callout:has(#section-10) { padding:16px 20px; }
@media(max-width:800px) {
 .history-entry { padding:20px 18px; margin:12px 0; }
 .chapter .timeline { padding-left:18px; }
 .history-entry::before { left:-24px; top:25px; }
 .chapter .history-entry h4 { font-size:17px; margin-bottom:12px; }
 .chapter .history-entry p { font-size:15px; line-height:1.7; }
 .chapter-2 .callout:has(#section-10) { padding:16px 12px; margin-bottom:24px; }
 #section-10 { font-size:clamp(18px,5.6vw,25px); line-height:1.5; letter-spacing:-.04em; }
}
@media(min-width:801px) {
  #section-10 { font-size:clamp(28px,3vw,38px); white-space:nowrap; }
  #section-10 br { display:none; }
}
/* Keep heading weight consistent even when source copy wraps it in strong. */
.chapter h2,.application h2 { font-weight:800; }
.chapter h3 { font-weight:700; }
.chapter h4 { font-weight:600; }
.chapter :is(h2,h3,h4) strong,.application h2 strong { font-weight:inherit; }
.chapter summary { font-weight:650; }
.chapter summary strong { font-weight:inherit; }
.chapter summary small { font-weight:450; }
.visually-hidden { position:absolute!important; width:1px!important; height:1px!important; padding:0!important; margin:-1px!important; overflow:hidden; clip-path:inset(50%); white-space:nowrap; }
.video-intake { background:#f8faff; border:1px solid #dce5fc; border-radius:14px; padding:24px; margin:24px 0; }
.video-pick { width:100%; min-height:56px; }
.text-action { background:transparent; border:0; color:var(--blue); font:inherit; font-size:14px; font-weight:600; min-height:44px; padding:10px 4px; text-decoration:underline; text-underline-offset:4px; cursor:pointer; }
.text-action:focus-visible { outline:3px solid var(--blue); outline-offset:3px; }
#video-status { font-weight:600; color:var(--ink); overflow-wrap:anywhere; }
#video-status:empty { display:none; }
#file-name { overflow-wrap:anywhere; font-size:14px; }
#video-preview { width:100%; max-height:340px; border-radius:10px; background:#111; }
.video-actions { display:flex; gap:12px; flex-wrap:wrap; align-items:center; }
#link-panel { margin-top:18px; }
@media(max-width:800px) {
 .video-intake { padding:16px; }
 .video-actions { display:grid; }
 .video-actions .button { width:100%; }
 .application { padding-bottom:110px; }
}
header .brand { --logo-width:160px; display:block; flex-shrink:0; width:var(--logo-width); line-height:0; mix-blend-mode:normal; }
header .brand-mark { display:block; position:relative; width:100%; height:calc(var(--logo-width) * .416 + 2px); overflow:hidden; }
header .brand img { position:absolute; width:123.87%; max-width:none; height:auto; left:-13.42%; top:calc(1px - var(--logo-width) * .0839); border-radius:0; }
header .brand small { display:block; margin:5px 0 0; font-size:10px; line-height:1.5; letter-spacing:-.04em; font-weight:500; text-align:center; color:var(--muted); white-space:nowrap; }
header { padding-top:8px; padding-bottom:8px; }
@media(max-width:800px) {
 .chapter details { padding:0; overflow:hidden; }
 .chapter details>summary { position:relative; display:block; list-style:none; min-height:72px; padding:18px 92px 18px 18px; font-size:16px; line-height:1.55; color:var(--ink); background:#fff; cursor:pointer; }
 .chapter details>summary::-webkit-details-marker { display:none; }
 .chapter details>summary::marker { content:''; }
 .chapter details>summary::after { content:'펼치기 ⌄'; position:absolute; right:14px; top:22px; padding:5px 9px; border-radius:6px; font-size:12px; line-height:1.5; font-weight:650; color:var(--blue); background:#eef3ff; }
 .chapter details[open] { border-color:#8faaf2; }
 .chapter details[open]>summary { background:#eef3ff; border-bottom:1px solid #d5e0fc; }
 .chapter details[open]>summary::after { content:'접기 ⌃'; background:#fff; }
 .chapter details>summary small { display:block; margin-top:6px; font-size:13px; float:none; }
 .chapter details>p { margin:16px 18px; }
 .chapter details>.tablewrap { margin:18px; }
 .chapter details>summary:focus-visible { outline:3px solid var(--blue); outline-offset:-3px; }
}
.chapter-inner>p.principle { display:grid; grid-template-columns:22px 1fr; gap:6px 10px; padding:18px 20px; margin-top:12px; margin-bottom:12px; background:white; border:1px solid #e5e9f2; border-radius:12px; }
.principle-icon { grid-column:1; font-size:16px; line-height:1.8; }
.principle>strong { grid-column:2; font-size:18px; font-weight:700; }
.principle-description { grid-column:2; font-size:16px; line-height:1.75; }
.principle-dash { display:none; }
@media(max-width:800px) {
 .tablewrap:has(.mobile-cards) { overflow:visible; border:0; background:transparent; }
 .tablewrap table.mobile-cards { display:block; min-width:0; width:100%; }
 .mobile-cards thead { display:none; }
 .mobile-cards tbody { display:block; }
 .chapter .mobile-cards tr { display:block; padding:18px; margin:0 0 12px; background:white; border:1px solid var(--line); border-radius:12px; }
 .chapter .mobile-cards td { display:block; width:auto; padding:0; border:0; font-size:16px; line-height:1.75; color:var(--ink); overflow-wrap:anywhere; }
 .chapter .mobile-cards td+td { margin-top:12px; }
 .chapter .mobile-cards td:first-child { color:var(--blue); font-size:17px; font-weight:700; }
 .chapter .mobile-cards td:first-child strong { color:inherit; font-weight:inherit; }
 .chapter .mobile-cards td:not(:first-child)::before { content:attr(data-label); display:block; font-size:12px; line-height:1.5; font-weight:600; color:#69758c; margin-bottom:4px; }
 .chapter .schedule td:last-child { font-size:17px; color:#34425b; }
 .chapter .schedule td:last-child::before { display:none; }
 .chapter-inner>p.principle { padding:16px; gap:4px 8px; }
 .principle>strong { font-size:17px; }
 .principle-description { font-size:16px; }
 .chapter-inner>details:has(.preparation) { padding:0; }
}
@media(max-width:800px) {
  header .brand { --logo-width:140px; }
  header { padding-top:6px; padding-bottom:6px; }
}
/* One shared article column; only container interiors have an inset. */
.chapter-inner { max-width:800px; }
.chapter-inner>p,.chapter-inner>h2,.chapter-inner>h3,.chapter-inner>h4,
.chapter-inner>ul,.chapter-inner>figure,.chapter-inner>.callout,
.chapter-inner>.tablewrap,.chapter-inner>details,.chapter-inner>.curriculum-detail,
.chapter-inner>.closing,.chapter-inner>.cta { max-width:none; width:100%; margin-left:0; margin-right:0; }
.chapter-inner>h2,.chapter-inner>.callout:has(h2) { text-align:left; }
.chapter-inner>.timeline { max-width:none; }
.chapter-inner>figure img { width:100%; max-height:none; }
.chapter-inner>.cta { text-align:left; }
.chapter-inner>.cta p { margin-left:0; }

/* 2026-09-22: larger sub-sub titles (h4) — article h4 21→24px / mobile 19→21px, timeline entry h4 18→21px / mobile 17→19px. h3 (26/23px) stays above h4. */
.chapter h4 { font-size:24px; }
.chapter .history-entry h4 { font-size:21px; }
@media(max-width:800px) {
  .chapter h4 { font-size:21px; }
  .chapter .history-entry h4 { font-size:19px; }
}

/* 2026-09-22: tighter curriculum week tables (row padding 18→11px, line-height 1.85→1.6; mobile card rows 16→12px). */
.chapter .week td, .chapter .week th { padding:11px 14px; line-height:1.6; }
@media(max-width:800px) {
  .chapter .week tr { padding:12px 14px; }
  .chapter .week td { padding:3px 0; line-height:1.6; }
}

/* 2026-09-22: only the gap directly below the sticky header is reduced (hero top padding 32→20px; ≥1600px 100→56px; mobile 48→32px). Nothing else in the hero changes. */
.hero { padding-top:20px; }
@media(min-width:1600px) { .hero { padding-top:56px; } }
@media(max-width:800px) { .hero { padding-top:32px; } }