* {
  box-sizing:border-box
}
 :root {
  --ink:#172036;
  --muted:#596477;
  --blue:#2b4de0;
  --line:#dde2ec;
  --paper:#f8f9fc;
  --white:#fff
}
html {
  scroll-behavior:smooth;
  scroll-padding-top:110px
}
body {
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:Inter,"Segoe UI",Arial,sans-serif;
  font-size:16px;
  line-height:1.65
}
a {
  color:inherit;
  text-decoration:none
}
button {
  font:inherit
}
a,button,summary {
  -webkit-tap-highlight-color:transparent
}
a:focus-visible,button:focus-visible,summary:focus-visible {
  outline:3px solid var(--blue);
  outline-offset:5px
}
a:hover {
  text-decoration:underline;
  text-underline-offset:5px
}
.wrap {
  max-width:1160px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px
}
.skip {
  position:fixed;
  top:-100px;
  left:16px;
  background:white;
  padding:12px;
  z-index:20
}
.skip:focus {
  top:10px
}
.site-header {
  max-width:1296px;
  margin:auto;
  padding:26px 40px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:24px
}
.brand {
  display:flex;
  align-items:center;
  gap:12px;
  font-weight:750;
  font-size:18px;
  line-height:1.1;
  letter-spacing:-.5px
}


nav {
  display:flex;
  gap:29px;
  font-size:14px;
  font-weight:600
}
nav a {
  padding:10px 0
}
.hero {
  padding-top:68px
}
.eyebrow {
  font-size:12px;
  font-weight:750;
  letter-spacing:1.7px;
  color:var(--muted);
  margin:0 0 18px
}
.hero>.eyebrow {
  display:flex;
  align-items:center;
  gap:12px
}
.small-line {
  height:2px;
  width:27px;
  background:var(--blue)
}
h1,h2,h3,p {
  margin-top:0
}
h1 {
  font-size:clamp(44px,5.6vw,76px);
  line-height:1.08;
  letter-spacing:-3.5px;
  font-weight:650;
  margin-bottom:28px
}
h1 span {
  color:var(--blue)
}
.hero-bottom {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px
}
.hero-bottom p {
  font-size:18px;
  color:var(--muted);
  margin:0
}
.button {
  display:inline-flex;
  justify-content:center;
  align-items:center;
  border:1px solid var(--line);
  border-radius:8px;
  min-height:48px;
  padding:12px 23px;
  font-size:14px;
  font-weight:650;
  cursor:pointer;
  background:white;
  transition:background .15s,color .15s
}
.button:hover {
  text-decoration:none;
  background:#eef1fa
}
.primary {
  background:var(--blue);
  border-color:var(--blue);
  color:white
}
.primary:hover {
  background:#203cbb
}
.hero-note {
  border-top:1px solid var(--line);
  margin-top:49px;
  padding:18px 0;
  display:flex;
  justify-content:space-between;
  gap:20px;
  font-size:12px;
  color:var(--muted)
}
.hero-note span:last-child {
  letter-spacing:1px
}
.section {
  padding-top:65px;
  padding-bottom:66px
}
.section-heading {
  display:flex;
  justify-content:space-between;
  align-items:flex-end;
  gap:24px;
  margin-bottom:30px
}
.section-heading .eyebrow {
  margin-bottom:10px
}
h2 {
  font-size:clamp(29px,3vw,40px);
  font-weight:650;
  line-height:1.2;
  letter-spacing:-1.3px;
  margin-bottom:0
}
.section-heading>p {
  font-size:15px;
  color:var(--muted);
  margin-bottom:3px
}
.app-grid {
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:28px
}
.app-card {
  background:white;
  border:1px solid var(--line);
  border-radius:16px;
  overflow:hidden
}
.product-scene {
  height:310px;
  position:relative;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:48px 34px 40px;
  overflow:hidden
}
.english .product-scene {
  background:#e8edff
}
.howmuch .product-scene {
  background:#edf1e9
}
.hoop .product-scene {
  background:#20283c
}
.didi .product-scene {
  background:#f8eee2
}
.scene-label {
  position:absolute;
  top:22px;
  left:25px;
  font-size:10px;
  letter-spacing:1.3px;
  font-weight:700;
  color:#4a587b
}
.scene-index {
  position:absolute;
  bottom:17px;
  right:23px;
  font-size:10px;
  letter-spacing:1.2px;
  font-weight:700;
  color:#4a587b
}
.hoop .scene-label,.hoop .scene-index {
  color:#b9c3d8
}
.lesson-panel {
  background:white;
  width:300px;
  padding:20px 25px;
  border:1px solid #d3dbf3;
  border-radius:12px;
  box-shadow:0 12px 24px #253f7710;
  transform:rotate(-3deg)
}
.mini-heading {
  display:flex;
  gap:10px;
  align-items:center;
  font-size:13px;
  font-weight:700
}
.mini-icon {
  background:var(--blue);
  color:white;
  border-radius:8px;
  padding:4px 8px
}
.mini-rule {
  height:1px;
  background:#e5e9f5;
  margin:12px 0
}
.mini-caption {
  font-size:9px;
  letter-spacing:1.2px;
  color:#64728e
}
.lesson-panel strong {
  display:block;
  line-height:1.25;
  font-size:23px;
  margin:8px 0 15px;
  font-weight:600;
  letter-spacing:-.5px
}
.word-line {
  display:flex;
  gap:8px;
  font-size:10px;
  color:#425eb0
}
.word-line span {
  background:#eef2ff;
  padding:4px 9px;
  border-radius:5px
}
.scan-panel {
  width:290px
}
.scan-corners {
  background:#fff;
  border:1px solid #bacab5;
  padding:18px 25px 14px;
  border-radius:12px;
  box-shadow:0 9px 20px #2648270a
}
.scan-kicker {
  font-size:10px;
  color:#55764d;
  letter-spacing:1.4px
}
.scan-corners strong {
  display:block;
  font-size:20px;
  font-weight:600;
  margin:6px 0 12px
}
.barcode {
  height:45px;
  background:repeating-linear-gradient(90deg,#29372c 0 2px,transparent 2px 5px,#29372c 5px 6px,transparent 6px 10px,#29372c 10px 14px,transparent 14px 17px);
  opacity:.8
}
.scan-id {
  display:block;
  font-size:9px;
  letter-spacing:1.4px;
  margin-top:7px;
  color:#587051
}
.search-chip {
  display:flex;
  align-items:center;
  gap:12px;
  background:#355b3c;
  color:white;
  max-width:260px;
  margin:12px auto 0;
  padding:9px 16px;
  border-radius:7px;
  font-size:12px
}
.search-chip>span {
  font-size:21px;
  line-height:1
}
.score-panel {
  background:#121827;
  color:#f9fafc;
  width:310px;
  border:1px solid #4b5263;
  border-radius:12px;
  padding:17px 23px;
  transform:rotate(2deg);
  box-shadow:0 14px 24px #080e1f30
}
.score-top {
  display:flex;
  justify-content:space-between;
  font-size:9px;
  letter-spacing:1px;
  color:#b2bcd0
}
.scores {
  display:flex;
  align-items:center;
  justify-content:space-around;
  gap:12px;
  margin-top:12px
}
.scores>div {
  text-align:center
}
.scores div>span {
  font-size:10px;
  letter-spacing:1px;
  color:#b2bcd0;
  display:block
}
.scores strong {
  font-size:60px;
  line-height:1.2;
  letter-spacing:-2px;
  font-weight:650
}
.scores>div:first-child strong {
  color:#ffb858
}
.score-divider {
  font-size:28px;
  color:#5e6880
}
.clock {
  border-top:1px solid #364056;
  margin-top:9px;
  padding-top:8px;
  font-size:19px;
  letter-spacing:2px
}
.clock span {
  font-size:9px;
  margin-left:12px;
  color:#b2bcd0;
  letter-spacing:1px
}
.daily-panel {
  background:#fffdf9;
  border:1px solid #e7dbc9;
  border-radius:12px;
  padding:17px 20px;
  width:310px;
  transform:rotate(-2deg);
  box-shadow:0 12px 24px #85642f0a
}
.daily-title {
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-bottom:12px
}
.daily-title strong {
  font-size:23px;
  letter-spacing:-.6px
}
.daily-title>span {
  font-size:9px;
  letter-spacing:1.3px;
  color:#7b715e
}
.task {
  display:flex;
  align-items:center;
  gap:9px;
  padding:10px 0;
  border-top:1px solid #eee7dc;
  font-size:11px
}
.task>span:last-child {
  margin-left:auto;
  font-size:10px;
  color:#786953
}
.check {
  width:17px;
  height:17px;
  border:1px solid #d4c4af;
  border-radius:5px;
  flex-shrink:0
}
.checked {
  background:#446b51;
  border-color:#446b51;
  color:white;
  text-align:center;
  line-height:16px
}
.daily-bottom {
  font-size:10px;
  color:#897252;
  margin-top:5px
}
.app-copy {
  padding:25px 27px 22px
}
.app-title {
  display:flex;
  gap:12px;
  align-items:center;
  justify-content:space-between
}
.app-title h3 {
  font-size:25px;
  letter-spacing:-.8px;
  font-weight:650;
  margin:0
}
.category {
  font-size:12px;
  color:var(--muted);
  white-space:nowrap
}
.app-copy>p {
  color:var(--muted);
  font-size:16px;
  margin:10px 0 16px;
  min-height:53px
}
.app-copy details {
  border-top:1px solid #edf0f5;
  padding-top:13px
}
.app-copy summary {
  cursor:pointer;
  font-size:14px;
  font-weight:650;
  list-style:none;
  display:flex;
  justify-content:space-between;
  align-items:center;
  min-height:30px
}
.app-copy summary::-webkit-details-marker {
  display:none
}
.app-copy summary:after {
  content:"+";
  font-size:22px;
  font-weight:400;
  color:var(--blue)
}
.app-copy details[open] summary:after {
  content:"−"
}
.app-copy details p {
  font-size:14px;
  line-height:1.7;
  color:var(--muted);
  margin:10px 0 0
}
.collection-note {
  font-size:13px;
  color:var(--muted);
  margin:22px 0 0
}
.collection-note a {
  text-decoration:underline
}
.updates {
  border-top:1px solid var(--line)
}
.update-row {
  display:grid;
  grid-template-columns:145px 130px 1fr;
  gap:20px;
  border-top:1px solid var(--line);
  padding:25px 0
}
.update-row time {
  font-size:14px;
  color:var(--muted)
}
.update-kind {
  font-size:12px;
  letter-spacing:.8px;
  text-transform:uppercase;
  color:var(--blue);
  font-weight:650
}
.update-row h3 {
  font-size:19px;
  font-weight:600;
  margin:0 0 6px
}
.update-row p {
  font-size:15px;
  color:var(--muted);
  margin:0
}
.updates-message {
  padding:24px 0;
  color:var(--muted)
}
.retry-button {
  margin-top:10px
}
.about-section {
  background:#eef1f7;
  border-block:1px solid var(--line);
  padding:76px 0
}
.about-grid {
  display:grid;
  grid-template-columns:1fr 1.2fr;
  gap:70px
}
.about-grid h2 {
  font-size:36px
}
.experience-note {
  display:flex;
  align-items:center;
  gap:18px;
  margin-top:35px
}
.experience-note strong {
  font-size:62px;
  line-height:1;
  letter-spacing:-3px;
  font-weight:600;
  color:var(--blue)
}
.experience-note span {
  font-size:13px;
  line-height:1.5;
  color:var(--muted)
}
.about-copy>p {
  color:var(--muted);
  font-size:16px;
  line-height:1.8
}
.about-copy>.lead {
  font-size:21px;
  color:var(--ink);
  line-height:1.5;
  font-weight:500
}
.expertise {
  border-top:1px solid #d6ddea;
  margin-top:27px;
  padding-top:22px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px
}
.expertise h3 {
  font-size:13px;
  margin-bottom:7px
}
.expertise p {
  font-size:13px;
  line-height:1.8;
  color:var(--muted);
  margin:0
}
.contact {
  display:grid;
  grid-template-columns:1.2fr 1fr;
  gap:30px;
  padding-top:85px;
  padding-bottom:80px;
  align-items:center
}
.contact>div>p:last-child {
  color:var(--muted);
  font-size:15px;
  margin:20px 0 0
}
.contact-action {
  text-align:right
}
.email {
  display:block;
  font-size:clamp(16px,1.8vw,23px);
  letter-spacing:-.5px;
  font-weight:550;
  overflow-wrap:anywhere
}
.copy-button {
  margin-top:17px
}
.copy-status {
  min-height:24px;
  font-size:13px!important;
  margin-top:8px!important
}
.footer {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:20px;
  border-top:1px solid var(--line);
  padding-top:25px;
  padding-bottom:25px;
  font-size:12px;
  color:var(--muted)
}
.footer-brand {
  font-weight:700;
  color:var(--ink);
  font-size:14px
}
.footer p {
  margin:0
}
[hidden] {
  display:none!important
}
@media(min-width:1450px) {
  .hero {
    padding-top:90px
  }

}
@media(max-width:760px) {
  .site-header {
    padding:20px 24px;
    align-items:flex-start;
    flex-wrap:wrap;
    gap:18px
  }
  .brand {
    font-size:17px
  }
  nav {
    width:100%;
    gap:0;
    justify-content:space-between;
    font-size:13px
  }
  nav a {
    padding:5px 0
  }
  .wrap {
    padding-left:24px;
    padding-right:24px
  }
  .hero {
    padding-top:36px
  }
  h1 {
    letter-spacing:-2px
  }
  .hero-bottom {
    align-items:flex-start;
    flex-direction:column;
    gap:22px
  }
  .hero-bottom p {
    font-size:16px
  }
  .hero-note {
    margin-top:34px;
    font-size:11px
  }
  .hero-note span:last-child {
    display:none
  }
  .section {
    padding-top:42px;
    padding-bottom:44px
  }
  .section-heading {
    align-items:flex-start;
    flex-direction:column;
    gap:12px
  }
  .section-heading>p br {
    display:none
  }
  .section-heading>p {
    font-size:14px
  }
  .app-grid {
    grid-template-columns:1fr;
    gap:22px
  }
  .product-scene {
    height:330px;
    padding:60px 24px 46px
  }
  .scene-label {
    font-size:9px
  }
  .lesson-panel strong {
    font-size:21px
  }
  .app-copy {
    padding:23px
  }
  .app-copy>p {
    min-height:0
  }
  .about-grid {
    grid-template-columns:1fr;
    gap:32px
  }
  .about-section {
    padding:50px 0
  }
  .about-grid h2 {
    font-size:32px
  }
  .experience-note {
    margin-top:25px
  }
  .about-copy>.lead {
    font-size:20px
  }
  .expertise {
    gap:20px
  }
  .contact {
    grid-template-columns:1fr;
    gap:26px
  }
  .contact-action {
    text-align:left
  }
  .email {
    font-size:20px
  }
  .update-row {
    grid-template-columns:1fr 1fr;
    gap:8px 14px
  }
  .update-row>div:last-child {
    grid-column:1/-1
  }
  .update-kind {
    text-align:right
  }
  .footer {
    flex-wrap:wrap;
    gap:10px
  }
  .footer>span {
    flex-basis:100%
  }
  .footer p {
    font-size:11px
  }

}
@media(max-width:360px) {
  .wrap {
    padding-inline:18px
  }
  .site-header {
    padding-inline:18px
  }
  h1 {
    font-size:39px
  }
  .product-scene {
    padding-inline:18px
  }
  .app-title h3 {
    font-size:23px
  }
  .expertise {
    grid-template-columns:1fr
  }
  .email {
    font-size:18px
  }

}
@media(prefers-reduced-motion:reduce) {
  html {
    scroll-behavior:auto
  }
  *,*::before,*::after {
    transition:none!important;
    animation:none!important
  }

}

/* Korean-first copy and compact language control. No external fonts. */
body { font-family: Inter, "Segoe UI", "Apple SD Gothic Neo", "Malgun Gothic", Arial, sans-serif; }
[data-i18n] { white-space: pre-line; }
html[lang="ko"] h1 { font-size: clamp(36px, 4.6vw, 64px); letter-spacing: -2px; line-height: 1.25; word-break: keep-all; }
html[lang="ko"] h2 { letter-spacing: -1px; word-break: keep-all; }
html[lang="ko"] p { word-break: keep-all; overflow-wrap: anywhere; }
html[lang="ko"] .eyebrow { letter-spacing: 1px; }
html[lang="ko"] .hero-title { color: var(--ink); }
#hero-title { color: var(--blue); }
.site-header nav { margin-left: auto; }
.language-control select { font: inherit; font-size: 14px; color: var(--ink); border: 1px solid var(--line); background: white; border-radius: 8px; padding: 9px 25px 9px 10px; min-height: 42px; cursor: pointer; }
select:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
@media (max-width:760px) {
  .site-header { align-items: center; gap: 16px; }
  .site-header nav { order: 3; width: 100%; margin-left: 0; }
  .language-control { margin-left: auto; }
  html[lang="ko"] .hero-bottom p { font-size: 17px; }
  html[lang="ko"] .about-grid h2 { font-size: 30px; }
}

#hero-title::first-line { color: var(--ink); }

/* Supplied PNGs remain unchanged, including their original whitespace. */
.brand { flex-shrink: 0; }
.brand-image { display: block; width: 234px; max-width: 100%; height: auto; }
.footer-logo { display: block; width: 260px; max-width: 100%; height: auto; }
.site-header { gap: 22px; }
.expertise { display: block; }
.skills-hint { margin: 0 0 12px !important; font-size: 13px; color: var(--muted); }
.expertise details { border-top: 1px solid #d6ddea; padding: 12px 0; }
.expertise summary { display: flex; align-items: center; justify-content: space-between; gap: 12px; cursor: pointer; list-style: none; font-size: 15px; font-weight: 650; }
.expertise summary::-webkit-details-marker { display: none; }
.expertise summary::after { content: "+"; color: var(--blue); font-size: 22px; font-weight: 400; }
.expertise details[open] summary::after { content: "−"; }
.expertise details p { margin: 12px 0 0; font-size: 14px; line-height: 1.9; }
@media (max-width: 1000px) and (min-width: 761px) {
 .site-header { padding-inline: 24px; gap: 18px; }
 .site-header nav { gap: 18px; }
 .brand-image { width: 195px; }
}
@media (max-width: 760px) {
 .brand-image { width: 190px; }
 .footer-logo { width: 230px; }
 .footer-brand { flex-basis: 100%; }
}
@media (max-width: 360px) {
 .site-header { gap: 12px; }
 .brand-image { width: 168px; }
 .language-control select { padding-right: 16px; font-size: 13px; }
}