/* MuMu Labs — 공통 스타일
   브랜드 보라 #6750A4 는 앱의 color_schemes.g.dart primary 와 같은 값이다. */

@font-face {
  font-family: 'Pretendard';
  src: url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/woff2/PretendardVariable.woff2') format('woff2-variations');
  font-weight: 45 920;
  font-display: swap;
}

:root {
  --brand: #6750A4;
  --brand-ink: #4a3a78;
  --brand-soft: #ede7f6;
  --bg: #ffffff;
  --bg-alt: #faf8fd;
  --fg: #1c1b1f;
  --fg-mute: #5d5a63;
  --fg-faint: #8b8792;
  --line: #e7e3ee;
  --radius: 18px;
  --maxw: 1120px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --brand: #cfbcff;
    --brand-ink: #e6dcff;
    --brand-soft: #2a2338;
    --bg: #131118;
    --bg-alt: #1a1722;
    --fg: #eae6f0;
    --fg-mute: #b3aec0;
    --fg-faint: #8d8899;
    --line: #2e2a3a;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI',
               'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;      /* 한국어 어절 단위 줄바꿈 */
  overflow-wrap: break-word;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------------------------------------------------------------- 헤더 */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-in {
  max-width: var(--maxw); margin: 0 auto; padding: 12px 24px;
  display: flex; align-items: center; gap: 16px;
}
.brand { display: flex; align-items: center; gap: 9px; font-weight: 700; text-decoration: none; letter-spacing: -.01em; }
.brand img { width: 26px; height: 26px; border-radius: 7px; }
.nav-sp { flex: 1; }
.nav a.link { text-decoration: none; color: var(--fg-mute); font-size: 15px; font-weight: 500; }
.nav a.link:hover { color: var(--fg); }
.lang {
  display: inline-flex; border: 1px solid var(--line); border-radius: 999px;
  overflow: hidden; font-size: 13px; font-weight: 600;
}
.lang a { padding: 5px 12px; text-decoration: none; color: var(--fg-mute); }
.lang a[aria-current="true"] { background: var(--brand); color: #fff; }
/* 14개 언어를 링크로 늘어놓으면 줄바꿈이 지저분해지므로 select 하나로 둔다.
   화살표를 직접 그려 넣어 브라우저 기본 모양차를 없앤다. */
.lang select.langsel {
  appearance: none; -webkit-appearance: none;
  border: 0; background: transparent; color: var(--fg-mute);
  font: inherit; font-size: 13px; font-weight: 600;
  padding: 5px 26px 5px 12px; margin: 0; cursor: pointer; max-width: 11em;
  background-image: linear-gradient(45deg, transparent 50%, var(--fg-mute) 50%),
                    linear-gradient(135deg, var(--fg-mute) 50%, transparent 50%);
  background-position: right 13px center, right 9px center;
  background-size: 4px 4px, 4px 4px;
  background-repeat: no-repeat;
}
.lang select.langsel:hover { color: var(--fg); }
.lang select.langsel:focus-visible { outline: 2px solid var(--brand); outline-offset: 1px; }
/* 옵션 목록은 OS가 그리므로 색을 명시해야 다크 모드에서 흰 글자/흰 배경이 되지 않는다 */
.lang select.langsel option { background: var(--bg); color: var(--fg); }

/* ---------------------------------------------------------------- 히어로 */
.hero { padding: 88px 0 72px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .04em;
  color: var(--brand); background: var(--brand-soft);
  padding: 6px 13px; border-radius: 999px; margin-bottom: 20px;
}
h1 {
  font-size: clamp(34px, 5.2vw, 58px); line-height: 1.18; margin: 0 0 20px;
  letter-spacing: -.03em; font-weight: 800;
}
h1 .accent { color: var(--brand); }
.lead { font-size: clamp(16px, 2vw, 19px); color: var(--fg-mute); margin: 0 0 30px; max-width: 33em; }

.stats { display: flex; gap: 30px; margin: 0 0 32px; padding: 0; list-style: none; flex-wrap: wrap; }
.stats b { display: block; font-size: 25px; font-weight: 800; letter-spacing: -.02em; }
.stats span { font-size: 13px; color: var(--fg-faint); }

.badges { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.badges img { height: 52px; width: auto; transition: transform .16s ease; }
.badges a:hover img { transform: translateY(-2px); }

/* 화면 목업 */
.shots { position: relative; display: flex; justify-content: center; gap: 18px; }
.phone {
  border-radius: 34px; overflow: hidden; background: #000;
  border: 5px solid #111; box-shadow: 0 22px 50px rgba(28,20,60,.24);
  width: 236px; flex: none;
}
@media (prefers-color-scheme: dark) { .phone { border-color: #2a2733; box-shadow: 0 22px 50px rgba(0,0,0,.5); } }
.phone.back { width: 200px; align-self: center; opacity: .96; transform: rotate(3.5deg) translateY(10px); }

/* ---------------------------------------------------------------- 섹션 */
section { padding: 84px 0; }
section.alt { background: var(--bg-alt); }
.sec-head { max-width: 640px; margin: 0 0 44px; }
h2 { font-size: clamp(26px, 3.6vw, 38px); line-height: 1.3; margin: 0 0 14px; letter-spacing: -.025em; font-weight: 800; }
.sec-head p { color: var(--fg-mute); margin: 0; font-size: 17px; }

/* 3단계 */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.step {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 26px;
}
.step .n {
  width: 34px; height: 34px; border-radius: 10px; background: var(--brand-soft);
  color: var(--brand); display: grid; place-items: center; font-weight: 800; font-size: 15px;
  margin-bottom: 16px;
}
.step h3 { margin: 0 0 8px; font-size: 19px; letter-spacing: -.01em; }
.step p { margin: 0; color: var(--fg-mute); font-size: 15px; }

/* 기능 카드 */
.feats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feat {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 26px;
  background: var(--bg);
}
.feat .ico { font-size: 27px; margin-bottom: 14px; }
.feat h3 { margin: 0 0 9px; font-size: 19px; letter-spacing: -.01em; }
.feat p { margin: 0; color: var(--fg-mute); font-size: 15px; }
.ladder {
  display: flex; gap: 6px; flex-wrap: wrap; margin-top: 16px;
  font-size: 12.5px; font-weight: 600; color: var(--brand);
}
.ladder span { background: var(--brand-soft); padding: 3px 9px; border-radius: 7px; }

/* 단어장 그리드 */
.books { display: grid; grid-template-columns: repeat(auto-fill, minmax(215px, 1fr)); gap: 14px; }
.book {
  border: 1px solid var(--line); border-radius: 14px; padding: 17px 19px; background: var(--bg);
}
.book b { display: block; font-size: 15px; margin-bottom: 7px; letter-spacing: -.01em; }
.book span { font-size: 13px; color: var(--fg-mute); line-height: 1.6; }

/* 언어 칩 */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 26px; }
.chip {
  border: 1px solid var(--line); border-radius: 999px; padding: 7px 15px;
  font-size: 14px; color: var(--fg-mute); background: var(--bg);
}
.chip.on { background: var(--brand); color: #fff; border-color: var(--brand); font-weight: 600; }

.note {
  margin-top: 26px; padding: 16px 20px; border-radius: 12px;
  background: var(--brand-soft); color: var(--brand-ink); font-size: 14.5px;
}
@media (prefers-color-scheme: dark) { .note { color: var(--brand); } }

/* CTA */
.cta { text-align: center; }
.cta h2 { margin-bottom: 12px; }
.cta p { color: var(--fg-mute); margin: 0 0 30px; font-size: 17px; }
.cta .badges { justify-content: center; }

/* 제품 카드(허브) */
.products { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 22px; }
.product {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 30px;
  background: var(--bg); text-decoration: none; display: block;
  transition: transform .16s ease, box-shadow .16s ease;
}
.product:hover { transform: translateY(-3px); box-shadow: 0 14px 34px rgba(28,20,60,.10); }
.product img { width: 58px; height: 58px; border-radius: 15px; margin-bottom: 18px; }
.product h3 { margin: 0 0 8px; font-size: 21px; letter-spacing: -.015em; }
.product p { margin: 0 0 16px; color: var(--fg-mute); font-size: 15px; }
.product .go { color: var(--brand); font-weight: 700; font-size: 14.5px; }
.product.soon { opacity: .62; pointer-events: none; }
.tag {
  display: inline-block; font-size: 11.5px; font-weight: 700; letter-spacing: .03em;
  padding: 3px 9px; border-radius: 6px; background: var(--brand-soft); color: var(--brand);
  margin-left: 8px; vertical-align: middle;
}

/* 푸터 */
footer { border-top: 1px solid var(--line); padding: 42px 0; color: var(--fg-faint); font-size: 14px; }
.foot { display: flex; gap: 22px; flex-wrap: wrap; align-items: center; }
footer a { color: var(--fg-mute); text-decoration: none; }
footer a:hover { color: var(--fg); text-decoration: underline; }
.foot-sp { flex: 1; }

/* ---------------------------------------------------------------- 반응형 */
@media (max-width: 900px) {
  .hero { padding: 56px 0 48px; }
  .hero-grid { grid-template-columns: 1fr; gap: 42px; }
  .shots { order: -1; }
  .phone { width: 200px; }
  .phone.back { display: none; }
  .steps, .feats { grid-template-columns: 1fr; }
  section { padding: 60px 0; }
  .nav a.link { display: none; }
}

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

/* EEA 동의 배너. 기본은 hidden 이고 스크립트가 해당 지역에서만 연다. */
#cc{position:fixed;left:0;right:0;bottom:0;z-index:99;display:flex;gap:12px;
align-items:center;justify-content:space-between;flex-wrap:wrap;
padding:14px 18px;background:#111;color:#fff;font-size:14px;line-height:1.5}
#cc[hidden]{display:none}
#cc p{margin:0;flex:1 1 260px}
#cc div{display:flex;gap:8px;flex:0 0 auto}
#cc button{padding:8px 16px;border:0;border-radius:6px;font-size:14px;cursor:pointer}
#cc-ok{background:#fff;color:#111;font-weight:600}
#cc-no{background:transparent;color:#fff;border:1px solid #666}