/* 단숙이 디자인 시스템(DESIGN.md): 상아색 종이 · 먹색 잉크 · 노란 형광펜 하나. */
    :root {
      --canvas: #F6F1E7; --surface: #FCFAF4; --sunk: #EEE7D9;
      --text: #23211E; --muted: #6A645B; --faint: #98918A; --line: #E6DECF;
      --highlight: #F3D66B; --mark: rgba(243, 214, 107, .85);
      --shadow: 0 1px 2px rgba(35,33,30,.04), 0 10px 28px -12px rgba(35,33,30,.16);
    }
    @media (prefers-color-scheme: dark) {
      :root {
        --canvas: #181613; --surface: #221F1B; --sunk: #1C1A17;
        --text: #EDE7DB; --muted: #A8A094; --faint: #79726A; --line: #302C27;
        --mark: rgba(243, 214, 107, .35);
        --shadow: 0 1px 2px rgba(0,0,0,.3), 0 10px 28px -12px rgba(0,0,0,.6);
      }
    }
    * { margin: 0; padding: 0; box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 72px; }
    body {
      background: var(--canvas); color: var(--text);
      font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', sans-serif;
      font-size: 17px; line-height: 1.65; -webkit-font-smoothing: antialiased;
      word-break: keep-all; overflow-wrap: break-word;
      background-image: radial-gradient(var(--line) 1.2px, transparent 1.2px); background-size: 24px 24px;
    }
    a { color: inherit; }
    .wrap { max-width: 1040px; margin: 0 auto; padding: 0 24px; }
    .narrow { max-width: 760px; }
    .mark { background: linear-gradient(transparent 58%, var(--mark) 58%, var(--mark) 92%, transparent 92%); padding: 0 2px; }
    h1, h2, h3 { font-family: 'MaruBuri', 'AppleMyungjo', serif; font-weight: 700; letter-spacing: -0.4px; }
    h2 { font-size: 34px; line-height: 1.3; }
    h3 { font-size: 19px; line-height: 1.35; }
    .sub { color: var(--muted); margin-top: 12px; font-size: 17.5px; }

    /* 위 막대 */
    nav.top { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--canvas) 88%, transparent); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
    nav.top .row { display: flex; align-items: center; gap: 20px; height: 60px; }
    .brand { display: flex; align-items: center; gap: 8px; font-family: 'MaruBuri', serif; font-weight: 700; font-size: 19px; text-decoration: none; }
    .brand img { border-radius: 7px; }
    .links { display: flex; gap: 18px; margin-left: auto; font-size: 15px; color: var(--muted); }
    .links a { text-decoration: none; }
    .links a:hover, .links a[aria-current] { color: var(--text); }
    .links a[aria-current] { font-weight: 700; text-decoration: underline; text-decoration-color: var(--highlight); text-decoration-thickness: 3px; text-underline-offset: 6px; }
    .links.mobile { display: none; }
    .get { background: var(--text); color: var(--canvas); text-decoration: none; font-weight: 700; font-size: 14px; padding: 8px 16px; border-radius: 999px; }

    /* 첫 화면 */
    .hero { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; padding-top: 64px; padding-bottom: 72px; }
    .eyebrow { font-weight: 700; color: var(--muted); letter-spacing: .5px; }
    h1 { font-size: 58px; line-height: 1.18; margin-top: 10px; letter-spacing: -1px; }
    .lead { font-size: 19px; color: var(--muted); margin-top: 20px; }
    .store { display: inline-flex; align-items: center; gap: 10px; margin-top: 28px; background: var(--text); color: var(--canvas); text-decoration: none; padding: 12px 22px 12px 18px; border-radius: 16px; box-shadow: var(--shadow); }
    .store svg { width: 26px; height: 26px; fill: currentColor; }
    .store span { display: flex; flex-direction: column; line-height: 1.15; }
    .store small { font-size: 12px; opacity: .8; }
    .store b { font-size: 19px; }
    .facts { margin-top: 14px; font-size: 14px; color: var(--faint); }
    .reel { position: relative; justify-self: center; width: 300px; }
    .reel video { width: 100%; aspect-ratio: 9/16; border-radius: 30px; display: block; background: var(--sunk); box-shadow: var(--shadow); border: 1px solid var(--line); object-fit: cover; }
    .sound { position: absolute; right: 12px; bottom: 12px; border: 0; background: rgba(35,33,30,.72); color: #fff; font: inherit; font-size: 13px; padding: 6px 12px; border-radius: 999px; cursor: pointer; }

    /* 구역 */
    section { padding: 88px 0; }
    section.band { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
    .trio { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 36px; }
    .tile { background: var(--canvas); border: 1px solid var(--line); border-radius: 22px; padding: 26px 24px; }
    .tile b { display: block; font-family: 'MaruBuri', serif; font-size: 30px; }
    .tile span { display: block; margin-top: 8px; color: var(--muted); font-size: 15.5px; }

    .steps { list-style: none; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 22px; margin-top: 40px; }
    .steps li, .gallery figure { min-width: 0; }
    .steps li { display: flex; flex-direction: column; gap: 16px; }
    .steps figure img, .gallery img { width: 100%; height: auto; aspect-ratio: 1206/2622; object-fit: cover; border-radius: 26px; border: 1px solid var(--line); box-shadow: var(--shadow); display: block; background: var(--sunk); }
    .n { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 9px; background: var(--highlight); color: #23211E; font-weight: 800; font-size: 14px; margin-bottom: 8px; }
    .steps p { color: var(--muted); font-size: 15.5px; margin-top: 6px; }

    .tags { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }
    .tag { background: var(--canvas); border: 1px solid var(--line); border-radius: 18px; padding: 16px 26px; font-size: 18px; box-shadow: var(--shadow); }
    .tag b { font-family: 'MaruBuri', serif; font-size: 28px; margin-right: 4px; }
    .tag:nth-child(2) { transform: rotate(-2deg); } .tag:nth-child(3) { transform: rotate(1.5deg); }
    .note { margin-top: 24px; color: var(--muted); }

    .gallery { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 22px; margin-top: 40px; }
    .gallery figcaption { margin-top: 12px; font-size: 15px; color: var(--muted); text-align: center; }

    .rules { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 32px; }
    .rules > div { background: var(--canvas); border: 1px solid var(--line); border-radius: 22px; padding: 24px; }
    .rules p { color: var(--muted); font-size: 15.5px; margin-top: 8px; }
    .rules small { display: block; margin-top: 10px; color: var(--faint); font-size: 12.5px; }
    details.papers { margin-top: 24px; background: var(--canvas); border: 1px solid var(--line); border-radius: 18px; padding: 16px 22px; }
    details.papers summary { cursor: pointer; font-weight: 700; }
    .papers-h { margin-top: 16px; font-weight: 700; font-size: 14px; color: var(--muted); }
    details.papers ul { margin: 8px 0 0 18px; font-size: 14.5px; color: var(--muted); }
    details.papers li { margin-top: 6px; }
    .journal { color: var(--faint); font-size: 13px; }

    .maker { display: flex; gap: 20px; align-items: flex-start; }
    .maker img { border-radius: 16px; flex: none; }
    .maker p { font-size: 18px; }

    .faq { margin-top: 28px; }
    .faq details { border-bottom: 1px solid var(--line); padding: 16px 4px; }
    .faq summary { cursor: pointer; font-weight: 700; font-size: 17px; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
    .faq summary::-webkit-details-marker { display: none; }
    .faq summary::after { content: '+'; color: var(--faint); font-weight: 400; }
    .faq details[open] summary::after { content: '–'; }
    .faq details div { margin-top: 10px; color: var(--muted); font-size: 15.5px; }
    #faq h3 { margin-top: 40px !important; }
    ul.list { margin: 12px 0 0 18px; color: var(--muted); font-size: 15.5px; }
    ul.list li { margin-top: 8px; }

    .contact p { margin-top: 14px; color: var(--muted); }
    .mail { display: inline-block; margin-top: 18px; font-weight: 700; font-size: 18px; }
    .store.small { display: block; width: max-content; margin-top: 22px; font-weight: 700; padding: 12px 20px; }

    /* 난이도 */
    .level-grid { display: grid; grid-template-columns: minmax(0,1.05fr) minmax(0,.95fr); gap: 20px; margin-top: 36px; align-items: start; }
    .gauge-card, .level-table { background: var(--surface); border: 1px solid var(--line); border-radius: 22px; padding: 26px; }
    .cap { font-size: 14px; color: var(--muted); font-weight: 600; }
    .gauge { position: relative; display: flex; height: 16px; border-radius: 999px; overflow: visible; margin-top: 34px; }
    .gauge .z { height: 100%; }
    .gauge .down { width: 70%; background: #CFE7DB; border-radius: 999px 0 0 999px; }
    .gauge .keep { width: 22%; background: var(--sunk); }
    .gauge .up { width: 8%; background: #F6D2BE; border-radius: 0 999px 999px 0; }
    .gauge .tick { position: absolute; top: -8px; bottom: -8px; width: 3px; background: var(--text); border-radius: 2px; }
    .gauge .tick i { position: absolute; bottom: 100%; left: 50%; transform: translateX(-50%); font-style: normal; font-size: 12px; font-weight: 700; margin-bottom: 4px; white-space: nowrap; }
    .gauge-legend { display: flex; justify-content: space-between; margin-top: 10px; font-size: 13px; color: var(--muted); }
    ul.why { margin: 20px 0 0 18px; color: var(--muted); font-size: 15px; }
    ul.why li { margin-top: 6px; }
    .level-table table { width: 100%; border-collapse: collapse; font-size: 15px; }
    .level-table th, .level-table td { padding: 12px 6px; text-align: left; border-bottom: 1px solid var(--line); }
    .level-table thead th { color: var(--faint); font-size: 13px; font-weight: 700; }
    .level-table tbody th { font-weight: 600; color: var(--text); }
    .level-table td { color: var(--muted); font-variant-numeric: tabular-nums; }
    .level-table .note { font-size: 14px; }
    @media (prefers-color-scheme: dark) { .gauge .down { background: #2E4A3E; } .gauge .up { background: #5A3A2C; } }
    @media (max-width: 880px) { .level-grid { grid-template-columns: minmax(0,1fr); } .level-table th, .level-table td { padding: 10px 4px; font-size: 14px; } }
    /* 아래 끝(2026-10-13 사용자: 만들다 만 느낌) */
    footer.site { margin-top: 0; border-top: 1px solid var(--line); background: var(--surface); padding: 56px 0 36px; }
    .foot-top { display: flex; justify-content: space-between; gap: 48px; flex-wrap: wrap; }
    .foot-brand p { margin-top: 12px; color: var(--muted); font-size: 15px; }
    .foot-brand .brand img { border-radius: 9px; }
    .foot-brand .store { margin-top: 18px; padding: 10px 18px 10px 14px; }
    .foot-brand .store b { font-size: 16px; }
    .foot-cols { display: flex; gap: 56px; flex-wrap: wrap; }
    .foot-cols h4 { font-size: 13px; color: var(--faint); font-weight: 700; letter-spacing: .4px; margin-bottom: 12px; }
    .foot-cols a, .foot-cols span { display: block; font-size: 15px; margin-top: 8px; text-decoration: none; color: var(--text); }
    .foot-cols a:hover { text-decoration: underline; text-decoration-color: var(--highlight); text-decoration-thickness: 2px; }
    .foot-cols .muted { color: var(--faint); font-size: 13px; }
    .foot-bottom { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 44px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--faint); font-size: 13px; }
    @media (max-width: 880px) { .foot-top { flex-direction: column; gap: 36px; } .foot-cols { gap: 36px; } }

    @media (max-width: 880px) {
      .row > .links { display: none; }
      .links.mobile { display: flex; gap: 18px; overflow-x: auto; white-space: nowrap; padding: 0 16px 10px; font-size: 14px; scrollbar-width: none; }
      .links.mobile::-webkit-scrollbar { display: none; }
      .get { margin-left: auto; }
      .hero { grid-template-columns: 1fr; padding-top: 40px; gap: 36px; text-align: left; }
      h1 { font-size: 42px; }
      h2 { font-size: 27px; }
      .reel { width: 240px; }
      section { padding: 64px 0; }
      .trio, .rules { grid-template-columns: minmax(0, 1fr); }
      .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 16px; }
      .gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
      .maker { flex-direction: column; }
    }
    @media (max-width: 420px) {
      .wrap { padding: 0 16px; }
      h1 { font-size: 36px; }
    }
  

.more { margin-top: 24px; font-weight: 700; }
.more a { text-decoration: underline; text-decoration-color: var(--highlight); text-decoration-thickness: 3px; text-underline-offset: 4px; }
.level-table h3 { font-size: 18px; }

/* 푸터 조각 줄(앱 아이콘의 키링 조각) */
.pieces { display: flex; gap: 5px; margin-bottom: 14px; }
.pieces i { width: 14px; height: 14px; border-radius: 4px; background: var(--c); box-shadow: inset 0 -3px 0 rgba(0,0,0,.14), inset 0 2px 0 rgba(255,255,255,.35); }

/* 모바일 우선(2026-10-13 사용자: 모바일에 맞춰 설계한 것처럼) */
.swipe-hint { display: none; }
.dock { display: none; }
@media (max-width: 600px) {
  body { font-size: 16px; padding-bottom: env(safe-area-inset-bottom); }
  h2 { font-size: 24px; line-height: 1.32; }
  .sub { font-size: 15.5px; margin-top: 8px; }
  section { padding: 44px 0; }
  .lead br, .sub br, .tile span br { display: none; }

  /* 위 막대 · 메뉴 줄: 손가락으로 누르기 쉽게 */
  nav.top .row { height: 54px; }
  /* 메뉴 알약이 위 막대 아래 선에 붙지 않게 위아래 여백(2026-10-13 사용자) */
  .links.mobile { padding: 2px 16px 10px; gap: 4px; font-size: 14px; align-items: center; }
  .links.mobile a { padding: 7px 12px; border-radius: 999px; line-height: 1.3; }
  .links.mobile a[aria-current] { background: color-mix(in srgb, var(--text) 10%, transparent); text-decoration: none; }
  .get { padding: 9px 16px; }

  /* 첫 화면: 제목 · 받기가 스크롤 없이 보이게, 영상은 그 아래 */
  .hero { padding-top: 22px; padding-bottom: 36px; gap: 22px; }
  .eyebrow { font-size: 13px; }
  h1 { font-size: 38px; line-height: 1.2; margin-top: 6px; }
  .lead { font-size: 16.5px; margin-top: 12px; }
  .store { display: flex; width: 100%; justify-content: center; margin-top: 18px; padding: 14px 18px; border-radius: 14px; }
  .facts { text-align: center; font-size: 13px; }
  .reel { width: 62%; max-width: 240px; }
  .reel video { border-radius: 24px; }

  /* 숫자 세 칸: 한 줄씩 짧게 */
  .trio { gap: 8px; margin-top: 20px; }
  .tile { padding: 14px 16px; border-radius: 16px; display: grid; grid-template-columns: 96px minmax(0, 1fr); align-items: center; gap: 12px; }
  .tile b { font-size: 20px; }
  .tile span { margin-top: 0; font-size: 13.5px; }

  /* 화면 사진: 옆으로 넘겨 보는 카드 */
  .swipe-hint { display: block; margin-top: 18px; font-size: 13px; color: var(--faint); }
  .snap { display: flex !important; gap: 12px; overflow-x: auto; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch;
          margin: 10px -16px 0 !important; padding: 4px 16px 12px; scrollbar-width: none; }
  .snap::-webkit-scrollbar { display: none; }
  .snap > * { flex: 0 0 72%; scroll-snap-align: start; scroll-margin-left: 16px; }
  /* 한 화면에 사진과 설명이 같이 보이게(2026-10-13 사용자): 카드 한 장 = 왼쪽 앱 화면 + 오른쪽 설명.
     작은 휴대폰(SE)에서도 카드 높이가 화면 절반쯤이라 위아래로 잘리지 않는다. */
  .steps.snap > * { flex-basis: 86%; }
  .steps.snap li { flex-direction: row; align-items: center; gap: 14px; background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 12px; }
  .steps.snap figure { flex: 0 0 42%; }
  .steps.snap figure img { border-radius: 14px; box-shadow: none; }
  .steps.snap li > div { min-width: 0; }
  .steps.snap .n { margin-bottom: 6px; }
  .steps figure img, .gallery img { border-radius: 20px; }
  .gallery.snap > * { flex-basis: 44%; }
  .steps p { font-size: 14.5px; }
  .steps h3 { font-size: 17px; }

  /* 2 · 7 · 21일 */
  .tags { gap: 8px; flex-wrap: nowrap; margin-top: 20px; }
  .tag { padding: 12px 8px; font-size: 14px; border-radius: 14px; flex: 1; text-align: center; }
  .tag b { font-size: 22px; }
  .note { font-size: 14.5px; }

  .rules { gap: 8px; margin-top: 20px; }
  .rules > div { padding: 16px; border-radius: 16px; }
  .rules h3 { font-size: 17px; }
  .rules p { font-size: 14.5px; }
  .gauge-card, .level-table { padding: 16px; border-radius: 16px; }
  .gauge-legend { font-size: 11.5px; }
  .level-table th, .level-table td { padding: 10px 3px; font-size: 13px; }
  .level-table td { white-space: nowrap; }
  .more { margin-top: 18px; }
  .maker { flex-direction: row; gap: 14px; }
  .maker img { width: 48px; height: 48px; }
  .maker p { font-size: 15px; }
  .faq summary { font-size: 15.5px; padding: 4px 0; min-height: 40px; align-items: center; }
  .faq details { padding: 12px 2px; }
  .faq details div { font-size: 14.5px; }
  ul.list { font-size: 14.5px; }
  .mail { font-size: 16px; }
  /* 위 막대의 받기는 휴대폰에서 숨긴다(첫 화면 받기 · 아래 받기 바가 있다, 2026-10-13 사용자) */
  nav.top .get { display: none; }

  /* 푸터(2026-10-13 사용자: 좀 있어 보이게) — 가운데 정렬 브랜드 · 조각 줄 · 설정 화면 같은 링크 목록 */
  footer.site { padding: 36px 0 calc(92px + env(safe-area-inset-bottom)); text-align: center; }
  .foot-top { flex-direction: column; align-items: stretch; gap: 26px; }
  .foot-brand { display: flex; flex-direction: column; align-items: center; }
  .foot-brand .brand { flex-direction: column; gap: 10px; font-size: 22px; }
  .foot-brand .brand img { width: 56px; height: 56px; border-radius: 14px; box-shadow: var(--shadow); }
  .foot-brand p { display: block; margin-top: 8px; font-size: 14px; }
  .foot-brand p br { display: none; }
  .foot-brand .store { display: none; }
  .pieces { margin-bottom: 18px; }
  .foot-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; text-align: left; background: var(--canvas); border: 1px solid var(--line); border-radius: 18px; padding: 6px 16px; }
  .foot-cols > div { display: contents; }
  .foot-cols h4, .foot-cols .muted { display: none; }
  .foot-cols a { display: flex; justify-content: space-between; align-items: center; margin: 0; padding: 13px 0; font-size: 14.5px; color: var(--text); border-bottom: 1px solid var(--line); }
  .foot-cols a::after { content: '›'; color: var(--faint); }
  .foot-cols a[href^="mailto"] { grid-column: 1 / -1; border-bottom: 0; justify-content: center; gap: 8px; font-weight: 700; }
  .foot-cols a[href^="mailto"]::before { content: '✉︎'; }
  .foot-cols a[href^="mailto"]::after { content: none; }
  .foot-bottom { margin-top: 22px; padding-top: 0; border-top: 0; gap: 4px; font-size: 12px; flex-direction: column; align-items: center; text-align: center; }

  /* 아래 받기 바 */
  /* 아래 받기 바: iOS에서 스크롤할 때 튀지 않게(2026-10-13 사용자) — 흐림 효과(backdrop-filter)를 빼고
     자기 층에서만 움직인다(translate3d · will-change · contain). */
  .dock { display: flex; align-items: center; gap: 12px; position: fixed; left: 12px; right: 12px; bottom: calc(12px + env(safe-area-inset-bottom)); z-index: 20;
          background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 10px 10px 10px 12px; box-shadow: var(--shadow);
          transform: translate3d(0, 160%, 0); transition: transform .22s ease-out; will-change: transform; contain: layout paint; backface-visibility: hidden; }
  .dock.on { transform: translate3d(0, 0, 0); }
  .dock img { border-radius: 10px; }
  .dock div { flex: 1; display: flex; flex-direction: column; line-height: 1.25; }
  .dock b { font-family: 'MaruBuri', serif; font-size: 16px; }
  .dock small { color: var(--muted); font-size: 12.5px; }
  .dock a { background: var(--text); color: var(--canvas); text-decoration: none; font-weight: 700; padding: 11px 20px; border-radius: 14px; }
}
@media (max-width: 600px) and (prefers-reduced-motion: reduce) { .dock { transition: none; } }