:root {
  --paper: #ffffff; --tint: #e6f6ff; --tint2: #f3f9fd; --line: #d6e4ef; --ink: #0b1533; --body: #26324f; --mute: #5b6782;
  --navy: #07038d; --blue: #00a6ff; --blue2: #008ad6; --on-blue: #ffffff; --warn: #b4232a;
  --font: "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --r: 10px; --col: 740px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: 120px; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--body); font: 17px/1.8 var(--font); word-break: keep-all; overflow-wrap: anywhere; }
.al-en body, body.al-en { line-height: 1.7; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--navy); text-decoration-color: var(--blue); text-decoration-thickness: 2px; text-underline-offset: 4px; }
a:hover { color: var(--blue2); }
.al-skip { position: absolute; left: -999px; top: 8px; background: var(--navy); color: #fff; padding: 8px 14px; border-radius: 6px; z-index: 99; }
.al-skip:focus { left: 8px; }

/* masthead: guide mark + unofficial tag + language + one button, menu row below */
.al-mast { position: sticky; top: 0; z-index: 30; background: var(--paper); border-bottom: 3px solid var(--navy); }
.al-mast__top { max-width: 1120px; margin: 0 auto; display: flex; align-items: center; gap: 14px; padding: 12px 18px 8px; }
.al-mast__logo img, .al-word { display: block; }
.al-word { color: var(--navy); font-size: 21px; font-weight: 800; }
.al-langs { margin-left: auto; display: flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; font-size: 13.5px; font-weight: 700; }
.al-langs a, .al-langs span { padding: 5px 10px; text-decoration: none; }
.al-langs a { color: var(--mute); }
.al-langs span { background: var(--navy); color: #fff; }
.al-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 40px; padding: 0 18px; border-radius: 6px; background: var(--blue); color: var(--on-blue); font-weight: 700; font-size: 15px; text-decoration: none; white-space: nowrap; }
.al-btn:hover { background: var(--blue2); color: var(--on-blue); }
.al-btn--line { background: transparent; color: var(--navy); border: 2px solid var(--navy); }
.al-btn--big { min-height: 52px; padding: 0 30px; font-size: 17px; }
.al-menu-btn { display: none; min-height: 38px; padding: 0 12px; border: 1px solid var(--line); border-radius: 6px; background: var(--tint2); color: var(--navy); font: 700 14px var(--font); cursor: pointer; }
.al-nav { max-width: 1120px; margin: 0 auto; padding: 0 12px 6px; }
.al-nav__list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; }
.al-nav__list a { display: block; padding: 6px 10px; color: var(--ink); text-decoration: none; font-size: 15px; font-weight: 600; border-bottom: 2px solid transparent; }
.al-nav__list a:hover, .al-nav__list .is-here a { border-bottom-color: var(--blue); color: var(--navy); }

/* lead block */
.al-lead { max-width: var(--col); margin: 0 auto; padding: 40px 18px 6px; }
.al-lead--page { padding-top: 34px; }
.al-kicker { margin: 0 0 8px; font-size: 13px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--blue2); }
.al-h1 { font-size: clamp(30px, 4.4vw, 44px); line-height: 1.25; margin: 0 0 12px; color: var(--ink); font-weight: 800; letter-spacing: -.02em; }
.al-by { display: flex; flex-wrap: wrap; gap: 4px 14px; margin: 0 0 16px; font-size: 14px; color: var(--mute); }
.al-by a { color: var(--navy); font-weight: 700; text-decoration: none; border-bottom: 2px solid var(--blue); }
.al-lead__p p { font-size: 19px; line-height: 1.75; color: var(--ink); margin: 0 0 18px; }
.al-lead__pic { margin-top: 22px; }
.al-strip { margin: 8px 0 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 3px solid var(--navy); border-bottom: 1px solid var(--line); }
.al-strip div { padding: 12px 12px 12px 0; }
.al-strip div + div { padding-left: 12px; border-left: 1px solid var(--line); }
.al-strip dt { font-size: 12px; font-weight: 700; color: var(--mute); }
.al-strip dd { margin: 2px 0 0; font-size: 16px; font-weight: 800; color: var(--ink); line-height: 1.35; }

/* reading column + contents */
.al-col { max-width: var(--col); margin: 0 auto; padding: 18px 18px 64px; }
.al-toc { margin: 10px 0 6px; background: var(--tint2); border-left: 4px solid var(--blue); border-radius: 0 var(--r) var(--r) 0; padding: 4px 18px 8px; }
.al-toc summary { cursor: pointer; font-weight: 800; color: var(--navy); padding: 8px 0; font-size: 15px; }
.al-toc ol { margin: 0; padding-left: 22px; }
.al-toc li { margin: 3px 0; font-size: 15.5px; }
.al-toc a { text-decoration: none; color: var(--body); }
.al-toc a:hover { color: var(--navy); text-decoration: underline; }
.al-text h2 { font-size: clamp(24px, 3vw, 30px); line-height: 1.35; margin: 52px 0 14px; color: var(--ink); font-weight: 800; letter-spacing: -.02em; padding-top: 14px; border-top: 1px solid var(--line); }
.al-text h3 { font-size: 21px; line-height: 1.4; margin: 32px 0 10px; color: var(--navy); }
.al-text h4 { font-size: 18px; margin: 24px 0 8px; color: var(--ink); }
.al-text strong, .al-text b { color: var(--ink); }
.al-text ul, .al-text ol { padding-left: 22px; }
.al-text li { margin: 6px 0; }
.al-text li::marker { color: var(--blue2); font-weight: 700; }

/* tables */
.al-table { margin: 24px 0; }
.al-table__x { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r); }
.al-table table { width: 100%; border-collapse: collapse; font-size: 15.5px; }
.al-table th { background: var(--navy); color: #fff; text-align: left; padding: 11px 14px; font-size: 14px; }
.al-table td { padding: 11px 14px; border-top: 1px solid var(--line); vertical-align: top; }
.al-table tr:nth-child(even) td { background: var(--tint2); }

/* components */
.al-aside { margin: 24px 0; padding: 14px 18px; background: var(--tint); border-radius: var(--r); }
.al-aside p { margin: 0; }
.al-aside__k { font-weight: 800; color: var(--navy); }
.al-card { margin: 24px 0; border: 1px solid var(--line); border-top: 4px solid var(--navy); border-radius: var(--r); overflow: hidden; }
.al-card table { width: 100%; border-collapse: collapse; }
.al-card th, .al-card td { padding: 10px 16px; text-align: left; border-top: 1px solid var(--line); font-size: 15.5px; }
.al-card thead th { border-top: 0; background: var(--tint2); font-size: 13px; color: var(--mute); }
.al-card td:first-child { color: var(--mute); width: 38%; }
.al-card td:last-child { color: var(--ink); font-weight: 700; }
.al-card dl { margin: 0; display: grid; grid-template-columns: minmax(0, 38%) 1fr; }
.al-card dt, .al-card dd { margin: 0; padding: 10px 16px; border-top: 1px solid var(--line); }
.al-card dt { color: var(--mute); } .al-card dd { color: var(--ink); font-weight: 700; }
.al-years { margin: 26px 0; padding: 0 0 0 26px; list-style: none; border-left: 3px solid var(--blue); }
.al-years li { position: relative; margin: 0 0 16px; }
.al-years li::before { content: ""; position: absolute; left: -34px; top: 9px; width: 13px; height: 13px; border-radius: 99px; background: var(--paper); border: 3px solid var(--navy); }
.al-pair { margin: 26px 0; display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.al-pair__half { padding: 16px 18px; }
.al-pair__said { background: var(--tint2); }
.al-pair__real { border-left: 1px solid var(--line); }
.al-pair__k { display: block; font-size: 12.5px; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; color: var(--mute); margin-bottom: 6px; }
.al-pair__real .al-pair__k { color: var(--navy); }
.al-pair p { margin: 0; }
.al-fig { margin: 30px 0; }
.al-fig img { border-radius: var(--r); border: 1px solid var(--line); }
.al-fig__cap, .al-fig figcaption { font-size: 14px; line-height: 1.55; color: var(--mute); margin-top: 8px; padding-left: 10px; border-left: 3px solid var(--blue); }
.al-out { margin: 34px 0; padding: 20px; display: flex; justify-content: center; background: var(--tint); border-radius: var(--r); }

/* FAQ */
.al-faq { margin-top: 48px; }
.al-faq__q { border-bottom: 1px solid var(--line); }
.al-faq__q summary { cursor: pointer; padding: 14px 40px 14px 0; font-weight: 700; color: var(--ink); list-style: none; position: relative; }
.al-faq__q summary::-webkit-details-marker { display: none; }
.al-faq__q summary::after { content: "+"; position: absolute; right: 6px; top: 10px; font-size: 24px; font-weight: 400; color: var(--blue2); }
.al-faq__q[open] summary::after { content: "−"; }
.al-faq__a { padding: 0 0 10px; }

/* footer */
.al-foot { background: var(--navy); color: #d5dcf5; margin-top: 30px; }
.al-foot__in { max-width: 1120px; margin: 0 auto; padding: 36px 18px 18px; display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 30px; }
.al-foot__about p { margin: 10px 0 0; font-size: 13.5px; line-height: 1.6; }
.al-foot__nav { display: grid; gap: 14px; align-content: start; }
.al-foot__list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px 18px; }
.al-foot__list a { color: #fff; text-decoration: none; font-size: 15px; }
.al-foot__list--small a { color: #aeb8e6; font-size: 14px; }
.al-foot__age { max-width: 1120px; margin: 0 auto; padding: 14px 18px 28px; font-size: 13px; border-top: 1px solid rgba(255, 255, 255, .16); }
.al-foot__age b { display: inline-block; color: var(--navy); background: #fff; border-radius: 4px; padding: 0 6px; margin-right: 6px; }
.al-lost { padding-bottom: 90px; }

@media (max-width: 900px) {
  .al-menu-btn { display: block; }
  .al-nav { display: none; padding-bottom: 10px; }
  .al-open .al-nav { display: block; }
  .al-nav__list { flex-direction: column; }
  .al-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .al-strip div:nth-child(3) { padding-left: 0; border-left: 0; }
  .al-strip div:nth-child(n+3) { border-top: 1px solid var(--line); }
}
@media (max-width: 640px) {
  body { font-size: 16.5px; }
  .al-mast__top { flex-wrap: wrap; gap: 8px 10px; padding: 10px 14px 8px; }
  .al-mast__logo img { width: 128px; height: auto; }
  .al-btn { min-height: 36px; padding: 0 12px; font-size: 14px; }
  .al-btn--big { width: 100%; min-height: 50px; }
  .al-col, .al-lead { padding-left: 16px; padding-right: 16px; }
  .al-pair, .al-foot__in { grid-template-columns: 1fr; }
  .al-pair__real { border-left: 0; border-top: 1px solid var(--line); }
  .al-table--stack table, .al-table--stack tbody, .al-table--stack tr, .al-table--stack td { display: block; width: 100%; }
  .al-table--stack thead { display: none; }
  .al-table--stack tr { border-top: 1px solid var(--line); padding: 6px 0; }
  .al-table--stack td { border: 0; padding: 4px 14px; background: none !important; }
  .al-table--stack td::before { content: attr(data-k); display: block; font-size: 12px; color: var(--mute); }
}

/* front banner reel + quick menu */
.al-reel { max-width: 1120px; margin: 22px auto 0; padding: 0 18px; }
.al-reel__track { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; border-radius: 16px; }
.al-reel__track::-webkit-scrollbar { display: none; }
.al-reel__item { flex: 0 0 100%; scroll-snap-align: start; display: block; }
.al-reel__item img { display: block; width: 100%; height: auto; border-radius: 16px; }
.al-reel__dots { display: flex; justify-content: center; gap: 8px; margin-top: 12px; }
.al-reel__dots button { width: 9px; height: 9px; border-radius: 9px; border: 0; padding: 0; background: var(--line); cursor: pointer; transition: width .2s; }
.al-reel__dots button[aria-current] { width: 26px; background: var(--navy); }
.al-tiles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 18px; }
.al-tile { display: grid; gap: 2px; padding: 14px 14px 13px; border: 1px solid var(--line); border-radius: 12px; background: var(--tint2); text-decoration: none; color: var(--ink); transition: border-color .15s, transform .15s; }
.al-tile:hover { border-color: var(--blue); transform: translateY(-2px); color: var(--ink); }
.al-tile svg { width: 30px; height: 30px; fill: none; stroke: var(--navy); stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; margin-bottom: 6px; }
.al-tile b { font-size: 15.5px; }
.al-tile span { font-size: 13px; color: var(--mute); line-height: 1.35; }
@media (max-width: 640px) {
  .al-reel { padding: 0 16px; margin-top: 14px; }
  .al-tiles { grid-template-columns: repeat(2, 1fr); }
}