:root {
  --ink: #0b0d10;
  --paper: #f3f2ee;
  --white: #ffffff;
  --muted: #676b6a;
  --line: rgba(11, 13, 16, .15);
  --lime: #d9ff45;
  --blue: #a7bbff;
  --orange: #ff946e;
  --mint: #c4eedc;
  --serif: Georgia, "Times New Roman", serif;
  --sans: Inter, Pretendard, "Noto Sans KR", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --shadow: 0 20px 60px rgba(11, 13, 16, .10);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.68;
  margin: 0;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
img { height: auto; max-width: 100%; }

.wrap { margin: 0 auto; width: min(1220px, calc(100% - 44px)); }
.wide-wrap { margin: 0 auto; width: min(1400px, calc(100% - 44px)); }
.skip-link { background: var(--lime); left: 14px; padding: 8px 12px; position: fixed; top: -100px; z-index: 99; }
.skip-link:focus { top: 14px; }

.site-header {
  align-items: center;
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 24px;
  justify-content: space-between;
  min-height: 76px;
  position: relative;
  z-index: 30;
}
.brand { align-items: baseline; display: inline-flex; font-size: 1.25rem; font-weight: 900; letter-spacing: -.06em; white-space: nowrap; }
.brand small { color: var(--muted); font-size: .64rem; font-weight: 700; letter-spacing: .02em; margin-left: 8px; }
.site-nav { align-items: center; display: flex; gap: 16px; }
.nav-item { position: relative; }
.nav-item > a, .nav-item > summary { align-items: center; color: #3d4140; cursor: pointer; display: inline-flex; font-size: .82rem; font-weight: 700; list-style: none; padding: 24px 7px; white-space: nowrap; }
.nav-item > summary::-webkit-details-marker { display: none; }
.nav-item > summary::after { border-bottom: 1px solid currentColor; border-right: 1px solid currentColor; content: ""; height: 5px; margin-left: 8px; transform: rotate(45deg) translateY(-2px); width: 5px; }
.nav-item > a:hover, .nav-item[open] > summary { color: var(--ink); }
.mega-menu { background: var(--ink); box-shadow: var(--shadow); color: var(--paper); display: grid; gap: 28px; grid-template-columns: repeat(2, minmax(190px, 1fr)); left: -16px; min-width: 470px; padding: 24px; position: absolute; top: 67px; }
.mega-menu h3 { color: var(--lime); font-size: .67rem; letter-spacing: .14em; margin: 0 0 10px; text-transform: uppercase; }
.mega-menu a { color: rgba(243, 242, 238, .78); display: block; font-size: .82rem; padding: 4px 0; }
.mega-menu a:hover { color: var(--lime); }
.nav-cta { background: var(--ink); color: var(--paper) !important; padding: 10px 14px !important; }
.nav-cta:hover { background: var(--lime); color: var(--ink) !important; }
.lang-links { align-items: center; border-left: 1px solid var(--line); display: flex; gap: 5px; padding-left: 12px; }
.lang-links a { color: var(--muted); font-size: .68rem; font-weight: 800; padding: 3px 5px; }
.lang-links a:hover, .lang-links a.active { color: var(--ink); text-decoration: underline; text-underline-offset: 4px; }
.menu-toggle { background: transparent; border: 1px solid var(--line); display: none; padding: 8px 10px; }

.hero { overflow: hidden; padding: 88px 0 96px; position: relative; }
.hero::after { border: 1px solid var(--line); border-radius: 50%; content: ""; height: 740px; position: absolute; right: -290px; top: -130px; width: 740px; }
.hero-grid { align-items: end; display: grid; gap: 66px; grid-template-columns: minmax(0, 1.25fr) minmax(250px, .75fr); position: relative; z-index: 1; }
.eyebrow { font-size: .71rem; font-weight: 900; letter-spacing: .15em; margin: 0 0 22px; text-transform: uppercase; }
.hero h1 { font-size: clamp(2.95rem, 6.2vw, 6.6rem); letter-spacing: .01em; line-height: 1.28; margin: 0; max-width: 900px; white-space: pre-line; }
.hero-copy { color: #515655; font-size: 1.05rem; margin: 30px 0 0; max-width: 640px; }
.hero-actions { align-items: center; display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.button { background: var(--ink); border: 1px solid var(--ink); color: var(--paper); display: inline-flex; font-size: .82rem; font-weight: 850; justify-content: center; padding: 13px 18px; transition: background .18s, transform .18s; }
.button:hover { background: var(--lime); color: var(--ink); transform: translateY(-2px); }
.button.outline { background: transparent; color: var(--ink); }
.button.outline:hover { background: var(--white); }
.hero-art { justify-self: end; max-width: 280px; position: relative; }
.hero-orbit { align-items: center; background: var(--lime); border-radius: 50%; display: flex; height: 245px; justify-content: center; margin: 0 0 22px auto; transform: rotate(-8deg); width: 245px; }
.hero-orbit strong { font-family: var(--serif); font-size: 2.2rem; font-weight: 400; letter-spacing: -.08em; line-height: .9; text-align: center; }
.hero-art p { color: var(--muted); font-size: .78rem; margin: 0; }
.signal-row { border-bottom: 1px solid var(--line); border-top: 1px solid var(--line); display: grid; grid-template-columns: repeat(4, 1fr); }
.signal { font-size: .71rem; font-weight: 900; letter-spacing: .09em; padding: 17px 15px 17px 0; text-transform: uppercase; }
.signal + .signal { border-left: 1px solid var(--line); padding-left: 15px; }

section { padding: 112px 0; }
.section-head { display: grid; gap: 42px; grid-template-columns: .42fr 1fr; margin-bottom: 56px; }
.section-head h2 { font-size: clamp(2.3rem, 4.4vw, 4.8rem); letter-spacing: .01em; line-height: 1.22; margin: 0; max-width: 850px; white-space: pre-line; }
.section-head p { color: var(--muted); font-size: 1rem; margin: 15px 0 0; max-width: 650px; }
.section-head.center { display: block; text-align: center; }
.section-head.center p { margin-left: auto; margin-right: auto; }
.dark { background: var(--ink); color: var(--paper); }
.dark .section-head p, .dark .eyebrow, .dark .muted { color: rgba(243, 242, 238, .62); }
.lime { background: var(--lime); }
.blue { background: var(--blue); }
.mint { background: var(--mint); }
.orange { background: var(--orange); }

.intro-card { background: var(--white); border: 1px solid var(--line); box-shadow: var(--shadow); padding: 34px; }
.intro-card h2 { font-size: clamp(1.8rem, 3.5vw, 3.5rem); letter-spacing: .01em; line-height: 1.22; margin: 0 0 18px; white-space: pre-line; }
.intro-card p { color: var(--muted); margin: 0; max-width: 800px; }
.grid-2 { display: grid; gap: 18px; grid-template-columns: repeat(2, 1fr); }
.grid-3 { display: grid; gap: 0; grid-template-columns: repeat(3, 1fr); }
.grid-4 { display: grid; gap: 0; grid-template-columns: repeat(4, 1fr); }
.card { border-top: 1px solid var(--line); padding: 23px 23px 25px 0; }
.card + .card { border-left: 1px solid var(--line); padding-left: 23px; }
.card .index { color: var(--muted); font-size: .69rem; font-weight: 900; letter-spacing: .13em; }
.card h3 { font-size: 1.18rem; letter-spacing: -.04em; line-height: 1.2; margin: 32px 0 10px; }
.card p { color: var(--muted); font-size: .89rem; margin: 0; }
.card a.more { display: inline-flex; font-size: .78rem; font-weight: 850; margin-top: 20px; text-decoration: underline; text-underline-offset: 4px; }
.card a.more:hover { color: #5d6fd0; }
.grid-3 .card:nth-child(3n + 2), .grid-3 .card:nth-child(3n + 3) { border-left: 1px solid var(--line); padding-left: 23px; }
.grid-3 .card:nth-child(3n + 1) { border-left: 0; }
.grid-4 .card:nth-child(4n + 2), .grid-4 .card:nth-child(4n + 3), .grid-4 .card:nth-child(4n + 4) { border-left: 1px solid var(--line); padding-left: 23px; }

.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.metric { border-top: 1px solid var(--line); padding: 20px 20px 0 0; }
.metric + .metric { border-left: 1px solid var(--line); padding-left: 20px; }
.metric strong { display: block; font-size: clamp(2rem, 4vw, 4.5rem); letter-spacing: -.09em; line-height: 1; }
.metric span { color: var(--muted); display: block; font-size: .77rem; margin-top: 10px; }
.dark .metric span { color: rgba(243, 242, 238, .62); }

.tag-list { display: flex; flex-wrap: wrap; gap: 10px; }
.tag { border: 1px solid currentColor; border-radius: 999px; font-size: .78rem; padding: 9px 14px; }
.tool-band { border-top: 1px solid rgba(243, 242, 238, .28); margin-top: 40px; padding-top: 26px; }
.tool-band span { color: rgba(243, 242, 238, .68); display: inline-block; font-size: .74rem; font-weight: 800; letter-spacing: .06em; margin: 0 18px 12px 0; text-transform: uppercase; }
.notice { border-left: 4px solid var(--lime); padding: 5px 0 5px 18px; }
.notice p { color: var(--muted); margin: 0; }
.dark .notice p { color: rgba(243, 242, 238, .72); }

.page-hero { border-bottom: 1px solid var(--line); padding: 72px 0 64px; }
.page-hero h1 { font-size: clamp(2.6rem, 5.8vw, 6.2rem); letter-spacing: .01em; line-height: 1.28; margin: 0; max-width: 1000px; white-space: pre-line; }
.page-hero p { color: var(--muted); font-size: 1.05rem; margin: 26px 0 0; max-width: 700px; }
.crumbs { color: var(--muted); font-size: .76rem; margin: 0 0 22px; }
.crumbs a:hover { color: var(--ink); }
.page-index { align-items: start; display: grid; gap: 40px; grid-template-columns: 260px 1fr; }
.sticky-index { position: sticky; top: 25px; }
.sticky-index h2 { font-size: .72rem; letter-spacing: .12em; margin: 0 0 14px; text-transform: uppercase; }
.sticky-index a { border-top: 1px solid var(--line); color: var(--muted); display: block; font-size: .82rem; padding: 9px 0; }
.sticky-index a:hover { color: var(--ink); }
.prose { max-width: 880px; }
.prose h2 { font-size: clamp(1.8rem, 3.5vw, 3.6rem); letter-spacing: .01em; line-height: 1.22; margin: 0 0 18px; white-space: pre-line; }
.prose h3 { font-size: 1.28rem; letter-spacing: -.04em; margin: 38px 0 10px; }
.prose p { color: #4f5452; margin: 0 0 18px; }
.prose ul, .prose ol { color: #4f5452; padding-left: 22px; }
.prose li { margin: 7px 0; }
.anchor-section { border-top: 1px solid var(--line); margin-top: 48px; padding-top: 42px; }
.anchor-section:first-child { border-top: 0; margin-top: 0; padding-top: 0; }
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); padding: 16px 0; }
.faq summary { cursor: pointer; font-weight: 850; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; float: right; font-weight: 400; }
.faq details[open] summary::after { content: "–"; }
.faq p { color: var(--muted); font-size: .9rem; margin: 12px 0 0; max-width: 760px; }

.office-grid { display: grid; gap: 0; grid-template-columns: repeat(5, 1fr); }
.office { border-top: 1px solid var(--line); min-height: 210px; padding: 22px 20px 0 0; }
.office + .office { border-left: 1px solid var(--line); padding-left: 20px; }
.office h3 { font-size: 1.3rem; margin: 32px 0 7px; }
.office p { color: var(--muted); font-size: .88rem; margin: 0; }
.office small { color: var(--muted); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; }
.manager-strip { align-items: center; display: flex; gap: 24px; justify-content: space-between; }
.manager-strip h2 { font-size: clamp(1.9rem, 3.5vw, 4rem); letter-spacing: .01em; line-height: 1.24; margin: 0; max-width: 700px; white-space: pre-line; }
.manager-strip p { color: #515655; margin: 0; max-width: 360px; }

.timeline { border-top: 1px solid var(--line); }
.timeline-item { display: grid; gap: 30px; grid-template-columns: 100px 230px 1fr; padding: 26px 0; }
.timeline-item + .timeline-item { border-top: 1px solid var(--line); }
.timeline-item .step-no { color: var(--orange); font-size: .75rem; font-weight: 900; letter-spacing: .13em; }
.timeline-item h3 { font-size: 1.4rem; letter-spacing: -.05em; margin: 0; }
.timeline-item p { color: var(--muted); margin: 0; max-width: 640px; }

.tool-table { border-top: 1px solid var(--line); }
.tool-row { display: grid; gap: 22px; grid-template-columns: 180px 200px 1fr; padding: 19px 0; }
.tool-row + .tool-row { border-top: 1px solid var(--line); }
.tool-row strong { font-size: .95rem; }
.tool-row span { color: var(--muted); font-size: .84rem; }
.tool-row p { color: #4f5452; font-size: .88rem; margin: 0; }

.form-wrap { display: grid; gap: 44px; grid-template-columns: .75fr 1.25fr; }
.contact-detail h2 { font-size: clamp(2.1rem, 4.2vw, 4.8rem); letter-spacing: .01em; line-height: 1.24; margin: 0 0 20px; white-space: pre-line; }
.contact-detail p { color: var(--muted); max-width: 400px; }
.contact-links { border-top: 1px solid var(--line); margin-top: 30px; padding-top: 17px; }
.contact-links a { display: block; font-size: .88rem; font-weight: 800; padding: 4px 0; }
.contact-links a:hover { color: #596fda; }
.form { background: var(--white); border: 1px solid var(--line); padding: 28px; }
.form-grid { display: grid; gap: 16px; grid-template-columns: repeat(2, 1fr); }
.field { display: flex; flex-direction: column; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: .74rem; font-weight: 850; }
.field input, .field select, .field textarea { background: var(--paper); border: 1px solid var(--line); border-radius: 0; color: var(--ink); padding: 12px; }
.field textarea { min-height: 150px; resize: vertical; }
.form-note { color: var(--muted); font-size: .72rem; margin: 15px 0 0; }

.article-grid { display: grid; gap: 0; grid-template-columns: repeat(3, 1fr); }
.article { border-top: 1px solid var(--line); padding: 20px 20px 30px 0; }
.article + .article { border-left: 1px solid var(--line); padding-left: 20px; }
.article .label { color: var(--muted); font-size: .68rem; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.article h3 { font-size: 1.4rem; letter-spacing: -.06em; line-height: 1.1; margin: 26px 0 10px; }
.article p { color: var(--muted); font-size: .87rem; margin: 0; }

footer { background: var(--ink); color: var(--paper); padding: 36px 0 24px; }
.footer-grid { display: grid; gap: 30px; grid-template-columns: 1.2fr .8fr .8fr .8fr; }
.footer-brand { font-size: 1.45rem; font-weight: 900; letter-spacing: -.06em; }
.footer-grid h3 { color: var(--lime); font-size: .68rem; letter-spacing: .13em; margin: 0 0 13px; text-transform: uppercase; }
.footer-grid p, .footer-grid a { color: rgba(243, 242, 238, .66); font-size: .79rem; margin: 0 0 4px; }
.footer-grid a:hover { color: var(--lime); }
.footer-bottom { border-top: 1px solid rgba(243, 242, 238, .22); color: rgba(243, 242, 238, .48); display: flex; font-size: .7rem; justify-content: space-between; margin-top: 30px; padding-top: 18px; }

[dir="rtl"] body { text-align: right; }
[dir="rtl"] .nav-item > summary::after { margin-left: 0; margin-right: 8px; }
[dir="rtl"] .mega-menu { left: auto; right: -16px; }
[dir="rtl"] .lang-links { border-left: 0; border-right: 1px solid var(--line); padding-left: 0; padding-right: 12px; }
[dir="rtl"] .signal + .signal, [dir="rtl"] .card + .card, [dir="rtl"] .metric + .metric, [dir="rtl"] .office + .office, [dir="rtl"] .article + .article { border-left: 0; border-right: 1px solid var(--line); padding-left: 0; padding-right: 23px; }
[dir="rtl"] .grid-3 .card:nth-child(3n + 1) { border-right: 0; }
[dir="rtl"] .hero-grid, [dir="rtl"] .section-head { direction: rtl; }
[dir="rtl"] .signal { padding-left: 15px; padding-right: 0; }
[dir="rtl"] .timeline-item { direction: rtl; }

@media (max-width: 1000px) {
  .site-nav { gap: 5px; }
  .nav-item > a, .nav-item > summary { font-size: .75rem; padding-left: 4px; padding-right: 4px; }
  .lang-links { padding-left: 6px; }
  .hero-grid { gap: 40px; }
  .office-grid { grid-template-columns: repeat(2, 1fr); }
  .office:nth-child(3) { border-left: 0; padding-left: 0; }
  .office:nth-child(3), .office:nth-child(4) { border-top: 1px solid var(--line); margin-top: 32px; padding-top: 22px; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 780px) {
  .site-header { flex-wrap: wrap; }
  .menu-toggle { display: block; margin-left: auto; }
  .site-nav { background: var(--paper); border-top: 1px solid var(--line); display: none; flex-direction: column; gap: 0; left: 0; padding: 6px 0 16px; position: absolute; right: 0; top: 75px; }
  .site-nav.is-open { display: flex; }
  .nav-item { width: 100%; }
  .nav-item > a, .nav-item > summary { padding: 10px 0; width: 100%; }
  .mega-menu { box-shadow: none; display: block; left: 0; min-width: 0; padding: 16px; position: relative; right: auto; top: 0; width: 100%; }
  .mega-menu > div + div { margin-top: 18px; }
  .nav-cta { margin: 8px 0; width: 100%; }
  .lang-links { border-left: 0; padding: 8px 0 0; width: 100%; }
  .hero-grid, .section-head, .page-index, .form-wrap { grid-template-columns: 1fr; }
  .hero-art { justify-self: start; }
  .hero-orbit { height: 185px; width: 185px; }
  .hero-orbit strong { font-size: 1.7rem; }
  .sticky-index { position: static; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 .card:nth-child(3n + 2), .grid-3 .card:nth-child(3n + 3), .grid-4 .card:nth-child(4n + 2), .grid-4 .card:nth-child(4n + 3), .grid-4 .card:nth-child(4n + 4) { border-left: 0; padding-left: 0; }
  .grid-3 .card:nth-child(even), .grid-4 .card:nth-child(even) { border-left: 1px solid var(--line); padding-left: 23px; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .metric:nth-child(3), .metric:nth-child(4) { border-top: 1px solid var(--line); margin-top: 28px; padding-top: 20px; }
  .metric:nth-child(3) { border-left: 0; padding-left: 0; }
  .timeline-item { grid-template-columns: 75px 1fr; }
  .timeline-item p { grid-column: 2; }
  .tool-row { grid-template-columns: 1fr 1fr; }
  .tool-row p { grid-column: 1 / -1; }
  [dir="rtl"] .grid-3 .card:nth-child(even), [dir="rtl"] .grid-4 .card:nth-child(even) { border-left: 0; border-right: 1px solid var(--line); padding-left: 0; padding-right: 23px; }
}
@media (max-width: 540px) {
  .wrap, .wide-wrap { width: min(100% - 28px, 1400px); }
  section { padding: 76px 0; }
  .hero { padding: 60px 0 64px; }
  .hero h1, .page-hero h1 { font-size: clamp(2.4rem, 11.5vw, 4.4rem); letter-spacing: .01em; line-height: 1.32; }
  .section-head h2, .intro-card h2, .prose h2, .manager-strip h2, .contact-detail h2 { letter-spacing: .01em; line-height: 1.28; }
  .signal-row, .grid-2, .grid-3, .grid-4, .metric-grid, .office-grid, .footer-grid, .article-grid { grid-template-columns: 1fr; }
  .signal + .signal, .card + .card, .metric + .metric, .office + .office, .article + .article { border-left: 0; border-top: 1px solid var(--line); margin-top: 20px; padding-left: 0; padding-top: 20px; }
  .signal { padding-bottom: 12px; padding-top: 12px; }
  .signal:first-child { border-top: 0; }
  .grid-3 .card:nth-child(even), .grid-4 .card:nth-child(even) { border-left: 0; padding-left: 0; }
  .metric:nth-child(3), .metric:nth-child(4) { border-top: 1px solid var(--line); margin-top: 20px; }
  .metric:nth-child(4) { border-left: 0; padding-left: 0; }
  .tool-row { grid-template-columns: 1fr; }
  .tool-row p { grid-column: auto; }
  .form { padding: 20px; }
  .form-grid { grid-template-columns: 1fr; }
  .field.full { grid-column: auto; }
  .manager-strip, .footer-bottom { align-items: flex-start; flex-direction: column; gap: 15px; }
  [dir="rtl"] .signal + .signal, [dir="rtl"] .card + .card, [dir="rtl"] .metric + .metric, [dir="rtl"] .office + .office, [dir="rtl"] .article + .article { border-right: 0; padding-right: 0; }
}