/* 쇠친 — 마케팅 사이트. 다크 테마 하나만 (의도). */

:root {
  --bg: #0B0B0F;
  --surface: #16161C;
  --border: #2A2A33;
  --text: #F2F2F5;
  --muted: #9A9AA6;
  --faint: #5C5C68;
  --lime: #C6FF3D;
  --sans: "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --display: "Black Han Sans", var(--sans);
  --num: "Chakra Petch", "SF Mono", Menlo, monospace;
  --wrap: 1120px;
  --gutter: 20px;
}

* { box-sizing: border-box; }

html { color-scheme: dark; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-weight: 500;
  font-size: 16px;
  line-height: 1.7;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 0.2em; }
h1, h2, h3, h4, p, ul, ol, dl, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
strong { font-weight: 700; }
.num { font-family: var(--num); font-weight: 700; letter-spacing: 0.02em; }

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

/* 헤더 */
.site-header {
  border-bottom: 1px solid var(--border);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.wordmark {
  font-weight: 900;
  font-size: 24px;
  letter-spacing: -0.02em;
  line-height: 1;
}
.wordmark:hover { text-decoration: none; }
.wordmark .ac { color: var(--lime); }
.site-header nav a {
  font-size: 14px;
  font-weight: 700;
  color: var(--muted);
}
.site-header nav a:hover { color: var(--text); }

/* 공통 섹션 */
section { padding-block: 72px; }
section + section { border-top: 1px solid var(--border); }
.section-title {
  font-size: 28px;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 32px;
}
.note {
  margin-top: 14px;
  font-size: 13px;
  color: var(--faint);
}

/* 헤드라인 (Black Han Sans) */
.hero h1,
.pitch h2,
#maker h2,
#download h2 {
  font-family: var(--display);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.12;
}

/* 히어로 */
.hero { padding-block: 64px 72px; }
.hero h1 {
  font-size: clamp(48px, 13vw, 104px);
  line-height: 1.05;
}
.hero .sub {
  margin-top: 24px;
  font-size: 18px;
  font-weight: 700;
  color: var(--muted);
  max-width: 30ch;
}
.hero .sub .num { font-size: 19px; color: var(--text); }
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 52px;
  padding-inline: 22px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 16px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  white-space: nowrap;
}
.btn:hover { text-decoration: none; border-color: var(--muted); }
.btn-primary {
  background: var(--lime);
  border-color: var(--lime);
  color: #0B0B0F;
}
.btn-primary:hover { border-color: var(--lime); filter: brightness(1.05); }

/* 스크린샷 프레임: 화면마다 여백이 달라도 틀은 같게 */
.frame {
  aspect-ratio: 1290 / 2796;
  width: 100%;
  overflow: hidden;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: var(--surface);
}
.frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}
.frames {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  align-items: start;
}

/* 메시지 섹션 */
.pitch .wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: start;
}
.pitch h2 { font-size: clamp(34px, 8.5vw, 60px); }
.pitch .proof {
  margin-top: 20px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.6;
  max-width: 30ch;
}
.pitch .proof .num { color: var(--lime); }
.pitch .facts {
  margin-top: 16px;
  font-size: 15px;
  color: var(--muted);
  max-width: 36ch;
}

/* 만든 사람 */
#maker h2 { font-size: clamp(30px, 7.4vw, 56px); max-width: 22ch; }
.maker-body {
  margin-top: 24px;
  max-width: 44ch;
  font-size: 17px;
  color: var(--muted);
}
.maker-body p + p { margin-top: 12px; }
.maker-body .num { color: var(--text); }

/* 다운로드 */
#download .wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
}
#download h2 { font-size: clamp(40px, 10vw, 72px); }
.store-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 28px;
  max-width: 480px;
}
.store {
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 72px;
  padding-inline: 24px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--surface);
  line-height: 1.2;
  white-space: nowrap;
}
.store:hover { text-decoration: none; border-color: var(--muted); }
.store-primary { background: var(--lime); border-color: var(--lime); color: #0B0B0F; }
.store-primary:hover { border-color: var(--lime); filter: brightness(1.05); }
.store-k { font-size: 12px; font-weight: 700; opacity: 0.75; }
.store-n { font-size: 24px; font-weight: 900; letter-spacing: -0.01em; }
.download-frame { width: min(260px, 66vw); margin: 0 auto; }

/* FAQ */
.faq details {
  border-top: 1px solid var(--border);
}
.faq details:last-child { border-bottom: 1px solid var(--border); }
.faq summary {
  list-style: none;
  cursor: pointer;
  padding-block: 18px;
  font-weight: 700;
  font-size: 17px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-family: var(--num);
  font-size: 20px;
  color: var(--faint);
  flex: none;
  line-height: 1;
}
.faq details[open] summary::after { content: "−"; }
.faq details p {
  color: var(--muted);
  padding-bottom: 20px;
  max-width: 64ch;
}

/* 푸터 */
.site-footer {
  border-top: 1px solid var(--border);
  padding-block: 32px;
  font-size: 14px;
  color: var(--faint);
}
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 24px;
}
.site-footer nav { display: flex; gap: 20px; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--text); }

/* 개인정보처리방침 */
.doc {
  max-width: 68ch;
  margin: 0 auto;
  padding: 56px var(--gutter) 80px;
}
.doc h1 {
  font-size: 32px;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 8px;
}
.doc .meta {
  color: var(--faint);
  font-size: 14px;
  margin-bottom: 32px;
}
.doc .meta span { display: block; }
.doc h2 {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -0.01em;
  margin: 48px 0 12px;
  line-height: 1.4;
}
.doc h3 {
  font-size: 16px;
  font-weight: 700;
  margin: 24px 0 8px;
}
.doc p { margin-bottom: 12px; }
.doc .key {
  padding: 16px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin: 20px 0;
}
.doc .key li { padding-left: 16px; position: relative; }
.doc .key li + li { margin-top: 8px; }
.doc .key li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--lime);
}
.doc ul.plain li { padding-left: 16px; position: relative; }
.doc ul.plain li::before {
  content: "·";
  position: absolute;
  left: 2px;
  color: var(--faint);
}
.doc .table-wrap { overflow-x: auto; margin: 12px 0 16px; }
.doc table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  line-height: 1.55;
}
.doc th, .doc td {
  text-align: left;
  vertical-align: top;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}
.doc th {
  font-weight: 700;
  color: var(--muted);
  background: var(--surface);
  white-space: nowrap;
}
.doc td:first-child { font-weight: 700; white-space: nowrap; }
.doc a { text-decoration: underline; text-underline-offset: 0.2em; }
.doc .contact { font-size: 15px; }

/* 좁은 화면: 3열 표는 행마다 세로로 쌓는다 */
@media (max-width: 640px) {
  .doc table.stack thead { display: none; }
  .doc table.stack tr { display: block; padding: 12px 0; border-bottom: 1px solid var(--border); }
  .doc table.stack td { display: block; padding: 2px 0; border: 0; white-space: normal; }
  .doc table.stack td::before {
    content: attr(data-label);
    display: block;
    font-size: 12px;
    font-weight: 700;
    color: var(--faint);
  }
  .doc table.stack td:first-child { font-size: 16px; }
  .doc table.stack td:first-child::before { display: none; }
  .doc table.stack td + td { margin-top: 6px; }
}

/* 데스크톱 */
@media (min-width: 820px) {
  :root { --gutter: 32px; }
  section { padding-block: 104px; }
  .section-title { font-size: 34px; margin-bottom: 40px; }

  .hero { padding-block: 112px 120px; }
  .hero h1 { font-size: clamp(88px, 9vw, 120px); }
  .hero .sub { font-size: 22px; margin-top: 28px; }
  .hero .sub .num { font-size: 23px; }

  .pitch .wrap {
    grid-template-columns: minmax(0, 1fr) 480px;
    gap: 56px;
    align-items: center;
  }
  .pitch h2 { font-size: 54px; }
  .pitch .proof { font-size: 21px; margin-top: 28px; }
  .pitch .facts { font-size: 16px; margin-top: 20px; }
  .frames { gap: 20px; }

  #maker h2 { font-size: 56px; max-width: none; }
  .maker-body { margin-top: 32px; font-size: 19px; }

  #download .wrap {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 72px;
  }
  #download h2 { font-size: 80px; }
  .store-row { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; max-width: 560px; margin-top: 36px; }
  .store { height: 84px; }
  .store-n { font-size: 28px; }
  .download-frame { width: 300px; margin: 0; }

  .faq { max-width: 760px; }
}

/* 로고 록업(brand 변형): 마크 라임 + 글자 흰색 */
.wordmark{display:inline-flex;align-items:center;gap:10px}
.wordmark .mark{fill:#C6FF3D;flex:none}