:root {
  --ink: #0a2232;
  --ink-2: #12394a;
  --mint: #3dc7ad;
  --mint-bright: #70e1cb;
  --paper: #f3f7f5;
  --white: #ffffff;
  --line: rgba(10, 34, 50, .14);
  --muted: #637780;
  --warm: #e8eee9;
  --radius: 20px;
  --shadow: 0 30px 70px rgba(4, 27, 40, .14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, Pretendard, "Noto Sans KR", "Apple SD Gothic Neo", system-ui, sans-serif;
  line-height: 1.55;
  letter-spacing: -.015em;
  -webkit-font-smoothing: antialiased;
}
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
button { color: inherit; }
em { color: var(--mint); font-style: normal; }
.shell { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.section { position: relative; overflow: clip; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 200; top: 12px; left: 12px; padding: 10px 14px; color: var(--white); background: var(--ink); border-radius: 8px; transform: translateY(-150%); }
.skip-link:focus { transform: none; }

.site-header { position: fixed; z-index: 100; inset: 0 0 auto; transition: background .25s, box-shadow .25s; }
.site-header.scrolled { background: rgba(243, 247, 245, .92); box-shadow: 0 1px 0 rgba(10,34,50,.09); backdrop-filter: blur(18px); }
.header-inner { min-height: 82px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 9px; font-size: 23px; font-weight: 800; letter-spacing: -.06em; }
.brand > span > span { color: var(--mint); }
.brand-mark { width: 40px; height: 40px; display: block; object-fit: cover; border-radius: 50%; }
.primary-nav { display: flex; align-items: center; gap: 32px; font-size: 14px; font-weight: 650; }
.primary-nav > a { position: relative; }
.primary-nav > a::after { content: ""; position: absolute; inset: auto 0 -7px; height: 1px; background: var(--mint); transform: scaleX(0); transform-origin: right; transition: transform .2s; }
.primary-nav > a:hover::after, .primary-nav > a:focus-visible::after { transform: scaleX(1); transform-origin: left; }
.lang-toggle { border: 0; background: transparent; font-size: 12px; font-weight: 800; cursor: pointer; padding: 8px; }
.menu-button { display: none; border: 0; background: transparent; padding: 8px; }
.menu-button span:not(.sr-only) { display: block; width: 24px; height: 2px; margin: 5px; background: var(--ink); }

.button { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 24px; border: 1px solid var(--ink); border-radius: 999px; color: var(--white); background: var(--ink); font-weight: 750; cursor: pointer; transition: transform .2s, background .2s, color .2s, box-shadow .2s; }
.button:hover, .button:focus-visible { transform: translateY(-2px); background: var(--mint); border-color: var(--mint); color: var(--ink); box-shadow: 0 12px 30px rgba(61,199,173,.24); }
.button-small { min-height: 42px; padding-inline: 18px; font-size: 13px; }
.button-light { color: var(--ink); background: var(--mint-bright); border-color: var(--mint-bright); width: 100%; }
.button-light:hover, .button-light:focus-visible { background: var(--white); border-color: var(--white); }
.text-link { display: inline-flex; align-items: center; gap: 12px; padding: 8px 0; border: 0; border-bottom: 1px solid currentColor; background: transparent; font-weight: 760; cursor: pointer; }
.text-link span:last-child { transition: transform .2s; }
.text-link:hover span:last-child { transform: translate(3px, 3px); }

.hero { min-height: 760px; padding: 154px 0 48px; background:
  linear-gradient(90deg, rgba(10,34,50,.035) 1px, transparent 1px) 0 0/80px 80px,
  linear-gradient(rgba(10,34,50,.035) 1px, transparent 1px) 0 0/80px 80px,
  var(--paper);
}
.hero-glow { position: absolute; width: 520px; height: 520px; right: -140px; top: -100px; border-radius: 50%; background: rgba(61,199,173,.12); filter: blur(30px); }
.hero-grid { display: grid; grid-template-columns: 1.04fr .96fr; align-items: center; gap: 70px; }
.eyebrow { margin: 0 0 24px; display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 11px; font-weight: 850; letter-spacing: .16em; }
.eyebrow > span:first-child { width: 26px; height: 2px; background: var(--mint); }
.hero h1, .section-heading h2 { margin: 0; font-size: clamp(48px, 6vw, 78px); line-height: 1.07; letter-spacing: -.065em; }
.hero-lead { max-width: 610px; margin: 30px 0 32px; color: #536a74; font-size: 18px; line-height: 1.8; word-break: keep-all; }
.hero-actions { display: flex; align-items: center; gap: 28px; }
.hero-proof { margin-top: 64px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.hero-proof div { padding: 20px 18px 0 0; border-right: 1px solid var(--line); }
.hero-proof div + div { padding-left: 18px; }
.hero-proof div:last-child { border-right: 0; }
.hero-proof strong { display: block; font-size: 13px; }
.hero-proof span { display: block; margin-top: 5px; color: var(--muted); font-size: 12px; }

.signal-board { position: relative; min-height: 510px; padding: 24px; color: var(--white); background: var(--ink); border-radius: 4px 40px 4px 40px; box-shadow: var(--shadow); }
.signal-board::before { content: ""; position: absolute; inset: 0; opacity: .09; background-image: radial-gradient(var(--white) 1px, transparent 1px); background-size: 18px 18px; border-radius: inherit; }
.board-top, .board-flow { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; color: #a9bdc5; font-size: 9px; font-weight: 800; letter-spacing: .14em; }
.live-dot { display: flex; align-items: center; gap: 7px; color: var(--mint-bright); }
.live-dot i { width: 6px; height: 6px; background: var(--mint); border-radius: 50%; box-shadow: 0 0 0 5px rgba(61,199,173,.12); }
.board-core { position: relative; height: 365px; display: grid; place-items: center; }
.core-ring { position: relative; z-index: 3; width: 160px; height: 160px; display: flex; flex-direction: column; align-items: center; justify-content: center; background: rgba(13,52,67,.94); border: 1px solid rgba(112,225,203,.7); border-radius: 50%; box-shadow: 0 0 60px rgba(61,199,173,.15), inset 0 0 30px rgba(61,199,173,.08); }
.core-ring::before { content: ""; position: absolute; inset: 10px; border: 1px dashed rgba(112,225,203,.25); border-radius: 50%; }
.core-ring span, .core-ring small { color: #9cc2c6; font-size: 8px; letter-spacing: .16em; }
.core-ring strong { margin: 2px 0; color: var(--mint-bright); font-size: 35px; letter-spacing: -.05em; }
.orbit { position: absolute; border: 1px solid rgba(112,225,203,.22); border-radius: 50%; animation: rotate 22s linear infinite; }
.orbit-one { width: 260px; height: 260px; }
.orbit-two { width: 330px; height: 210px; animation-direction: reverse; animation-duration: 28s; }
.orbit span { position: absolute; top: 12%; left: 14%; width: 8px; height: 8px; border-radius: 50%; background: var(--mint-bright); box-shadow: 0 0 18px var(--mint); }
.signal-tag { position: absolute; z-index: 4; min-width: 112px; padding: 10px 12px; display: grid; grid-template-columns: 8px 1fr auto; align-items: center; gap: 7px; background: rgba(16, 53, 68, .88); border: 1px solid rgba(255,255,255,.13); backdrop-filter: blur(8px); font-size: 9px; }
.signal-tag i { width: 5px; height: 5px; border-radius: 50%; background: var(--mint); }
.signal-tag span { color: #b8c9cd; }
.signal-tag strong { font-size: 13px; }
.tag-one { top: 50px; left: 10px; }
.tag-two { top: 86px; right: 4px; }
.tag-three { bottom: 45px; left: 34px; }
.board-flow { padding-top: 16px; border-top: 1px solid rgba(255,255,255,.1); }
.board-flow div { display: flex; gap: 7px; align-items: center; }
.board-flow span { color: var(--mint); }
.board-flow p { margin: 0; color: #d7e1e2; font-size: 10px; letter-spacing: .1em; }
.board-flow b { flex: 1; height: 1px; margin: 0 9px; background: linear-gradient(90deg, var(--mint), rgba(61,199,173,.05)); }
.tagline-row { margin-top: 70px; display: flex; align-items: center; gap: 18px; color: #6e8087; font-size: 12px; font-weight: 750; letter-spacing: .04em; }
.tagline-row span { width: 36px; height: 1px; background: var(--mint); }

.expertise { padding: 130px 0 150px; background: var(--white); }
.section-heading { display: grid; grid-template-columns: .42fr 1.58fr; align-items: start; gap: 32px; margin-bottom: 64px; }
.section-heading h2 { font-size: clamp(38px, 5vw, 64px); }
.section-heading > div { display: grid; grid-template-columns: 1.1fr .9fr; align-items: end; gap: 44px; }
.section-heading > div > p { margin: 0 0 5px; color: var(--muted); line-height: 1.8; word-break: keep-all; }
.service-explorer { display: grid; grid-template-columns: .82fr 1.65fr; min-height: 550px; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: 0 24px 60px rgba(10,34,50,.07); }
.service-tabs { display: flex; flex-direction: column; background: #f4f7f5; }
.service-tabs button { flex: 1; display: grid; grid-template-columns: 38px 1fr 24px; align-items: center; gap: 8px; padding: 24px 24px; text-align: left; background: transparent; border: 0; border-bottom: 1px solid var(--line); cursor: pointer; transition: background .22s, color .22s; }
.service-tabs button:last-child { border-bottom: 0; }
.service-tabs button span { color: var(--muted); font-size: 10px; font-weight: 800; }
.service-tabs button strong { font-size: 16px; line-height: 1.25; }
.service-tabs button i { font-style: normal; transition: transform .2s; }
.service-tabs button[aria-selected="true"] { color: var(--white); background: var(--ink); }
.service-tabs button[aria-selected="true"] span { color: var(--mint); }
.service-tabs button:hover i { transform: translate(3px, -3px); }
.service-panel { display: grid; grid-template-columns: 110px 1fr; gap: 34px; padding: 56px 58px; outline: none; background: var(--white); }
.panel-number { color: var(--mint); font-size: 68px; font-weight: 250; line-height: 1; letter-spacing: -.08em; }
.panel-kicker { margin: 4px 0 20px; color: var(--muted); font-size: 10px; font-weight: 850; letter-spacing: .14em; }
.panel-content h3 { margin: 0; font-size: clamp(28px, 3vw, 41px); line-height: 1.25; letter-spacing: -.05em; word-break: keep-all; }
.panel-content > p:not(.panel-kicker) { max-width: 620px; margin: 24px 0 32px; color: var(--muted); line-height: 1.8; word-break: keep-all; }
.panel-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; margin-bottom: 24px; padding-top: 28px; border-top: 1px solid var(--line); }
.panel-columns h4 { margin: 0 0 14px; color: #819199; font-size: 9px; letter-spacing: .13em; }
.panel-columns ul { margin: 0; padding: 0; list-style: none; }
.panel-columns li { position: relative; padding: 6px 0 6px 16px; font-size: 13px; }
.panel-columns li::before { content: ""; position: absolute; left: 0; top: 14px; width: 6px; height: 6px; border: 1px solid var(--mint); border-radius: 50%; }

.approach { padding: 130px 0 36px; color: var(--white); background: var(--ink); }
.approach::before { content: ""; position: absolute; width: 600px; height: 600px; top: -230px; right: -160px; border: 1px solid rgba(112,225,203,.12); border-radius: 50%; box-shadow: 0 0 0 100px rgba(112,225,203,.02), 0 0 0 200px rgba(112,225,203,.015); }
.section-heading.light .eyebrow { color: #8ba2ab; }
.section-heading.light > div > p { color: #a9bbc1; }
.approach-grid { display: grid; grid-template-columns: 1fr .92fr; gap: 85px; align-items: start; }
.method-list { margin: 0; padding: 0; list-style: none; }
.method-list li { display: grid; grid-template-columns: 58px 1fr; gap: 18px; padding: 24px 0; border-top: 1px solid rgba(255,255,255,.12); }
.method-list li:last-child { border-bottom: 1px solid rgba(255,255,255,.12); }
.method-list > li > span { color: var(--mint); font-size: 10px; font-weight: 800; }
.method-list strong { display: block; margin-bottom: 5px; font-size: 22px; letter-spacing: -.03em; }
.method-list p { margin: 0; color: #9fb1b8; line-height: 1.7; word-break: keep-all; }
.readiness-card { padding: 40px; color: var(--ink); background: #f3f7f5; border-radius: 3px 28px 3px 28px; box-shadow: 0 35px 75px rgba(0,0,0,.18); }
.card-label { margin: 0 0 14px; color: #70868e; font-size: 9px; font-weight: 850; letter-spacing: .14em; }
.readiness-card h3 { margin: 0 0 26px; font-size: 24px; letter-spacing: -.04em; }
.check-list { display: grid; gap: 10px; }
.check-list label { display: grid; grid-template-columns: 22px 1fr; align-items: start; gap: 11px; padding: 11px 0; border-bottom: 1px solid var(--line); cursor: pointer; }
.check-list input { position: absolute; opacity: 0; }
.check-list label > span { width: 20px; height: 20px; display: grid; place-items: center; border: 1px solid #9aabad; border-radius: 50%; transition: all .2s; }
.check-list label > span::after { content: "✓"; opacity: 0; color: var(--ink); font-size: 12px; font-weight: 900; transform: scale(.5); transition: all .2s; }
.check-list input:checked + span { background: var(--mint); border-color: var(--mint); }
.check-list input:checked + span::after { opacity: 1; transform: scale(1); }
.check-list input:focus-visible + span { outline: 3px solid rgba(61,199,173,.3); }
.check-list em { color: #38505b; font-size: 13px; font-style: normal; line-height: 1.55; }
.readiness-result { margin: 24px 0 18px; padding: 18px; display: grid; grid-template-columns: 54px 1fr; gap: 14px; align-items: center; background: var(--warm); border-radius: 10px; }
.readiness-result span { font-size: 11px; font-weight: 800; }
.readiness-result b { color: var(--mint); font-size: 28px; }
.readiness-result p { margin: 0; color: #4e6872; font-size: 12px; line-height: 1.5; }

.site-footer { margin-top: 125px; padding: 48px 0 14px; display: grid; grid-template-columns: 1.2fr .8fr auto; gap: 40px; border-top: 1px solid rgba(255,255,255,.14); }
.site-footer > div:first-child > p { margin: 16px 0 0; color: #8fa4ac; font-size: 12px; }
.footer-links { display: grid; align-content: start; gap: 10px; color: #c0ced2; font-size: 12px; }
.footer-links a:hover { color: var(--mint); }
.footer-meta { align-self: end; text-align: right; color: #748e98; font-size: 10px; }
.footer-meta button { padding: 0; border: 0; color: inherit; background: transparent; text-decoration: underline; cursor: pointer; }

dialog { max-width: none; border: 0; padding: 0; color: var(--ink); background: var(--white); box-shadow: 0 30px 100px rgba(0,0,0,.3); }
dialog::backdrop { background: rgba(3,20,30,.72); backdrop-filter: blur(6px); }
.contact-dialog { width: min(850px, calc(100% - 32px)); border-radius: 3px 28px 3px 28px; }
.dialog-close { position: absolute; z-index: 2; top: 18px; right: 22px; width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 50%; background: var(--white); font-size: 24px; line-height: 1; cursor: pointer; }
.dialog-intro { padding: 48px 50px 30px; color: var(--white); background: var(--ink); }
.dialog-intro .card-label { color: var(--mint); }
.dialog-intro h2 { margin: 0; font-size: 38px; line-height: 1.2; letter-spacing: -.05em; }
.dialog-intro > p:last-child { margin: 14px 0 0; color: #a8bac1; font-size: 13px; }
#contact-form { padding: 34px 50px 44px; display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
#contact-form label { display: grid; gap: 7px; color: #526972; font-size: 11px; font-weight: 700; }
#contact-form input, #contact-form select, #contact-form textarea { width: 100%; padding: 12px 2px; border: 0; border-bottom: 1px solid #b7c4c6; border-radius: 0; outline: 0; background: transparent; color: var(--ink); }
#contact-form input:focus, #contact-form select:focus, #contact-form textarea:focus { border-color: var(--mint); box-shadow: 0 1px 0 var(--mint); }
#contact-form .full { grid-column: 1 / -1; }
.form-actions { display: flex; justify-content: space-between; align-items: center; gap: 22px; margin-top: 8px; }
.form-actions p { max-width: 360px; margin: 0; color: #819399; font-size: 10px; font-weight: 400; }
.privacy-dialog { width: min(560px, calc(100% - 32px)); padding: 48px; border-radius: 3px 28px 3px 28px; }
.privacy-dialog h2 { margin: 0 0 16px; font-size: 30px; }
.privacy-dialog > p:last-child { color: var(--muted); line-height: 1.8; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@keyframes rotate { to { transform: rotate(360deg); } }

@media (max-width: 960px) {
  .shell { width: min(100% - 36px, 760px); }
  .menu-button { display: block; cursor: pointer; }
  .primary-nav { position: absolute; top: 72px; left: 18px; right: 18px; padding: 24px; display: none; flex-direction: column; align-items: stretch; gap: 18px; background: var(--white); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); }
  .primary-nav.open { display: flex; }
  .lang-toggle { text-align: left; }
  .hero { padding-top: 125px; }
  .hero-grid { grid-template-columns: 1fr; gap: 55px; }
  .signal-board { width: min(100%, 590px); margin-inline: auto; }
  .section-heading, .section-heading > div { grid-template-columns: 1fr; }
  .section-heading > div > p { max-width: 590px; }
  .service-explorer { grid-template-columns: 1fr; }
  .service-tabs { display: grid; grid-template-columns: 1fr 1fr; }
  .service-tabs button { border-right: 1px solid var(--line); }
  .service-tabs button:nth-child(2) { border-right: 0; }
  .approach-grid { grid-template-columns: 1fr; gap: 55px; }
}

@media (max-width: 640px) {
  .shell { width: calc(100% - 32px); }
  .header-inner { min-height: 70px; }
  .brand { font-size: 20px; }
  .brand-mark { width: 32px; height: 32px; }
  .hero { min-height: 0; padding: 112px 0 36px; }
  .hero h1 { font-size: 43px; }
  .hero-lead { margin: 24px 0 28px; font-size: 16px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 16px; }
  .hero-proof { margin-top: 46px; grid-template-columns: 1fr; }
  .hero-proof div, .hero-proof div + div { padding: 14px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .signal-board { min-height: 455px; padding: 20px; }
  .board-core { height: 330px; transform: scale(.89); margin-inline: -20px; }
  .tagline-row { margin-top: 42px; flex-wrap: wrap; }
  .expertise, .approach { padding-top: 94px; }
  .expertise { padding-bottom: 105px; }
  .section-heading { margin-bottom: 42px; }
  .section-heading h2 { font-size: 39px; }
  .service-tabs { grid-template-columns: 1fr; }
  .service-tabs button { min-height: 82px; border-right: 0; }
  .service-tabs button strong br { display: none; }
  .service-panel { grid-template-columns: 1fr; gap: 18px; padding: 34px 24px 40px; }
  .panel-number { font-size: 45px; }
  .panel-columns { grid-template-columns: 1fr; }
  .readiness-card { padding: 30px 22px; }
  .site-footer { margin-top: 92px; grid-template-columns: 1fr; }
  .footer-meta { text-align: left; }
  .dialog-intro { padding: 44px 24px 26px; }
  .dialog-intro h2 { font-size: 30px; }
  #contact-form { padding: 28px 24px 34px; grid-template-columns: 1fr; }
  #contact-form .full { grid-column: auto; }
  .form-actions { align-items: stretch; flex-direction: column; }
  .privacy-dialog { padding: 42px 24px 30px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}