/* 이룸 소개 사이트. 색·간격은 앱 디자인 토큰과 같은 값 (크림 바탕, 민트 선택색, 진한 남색 글자) */
:root{
  --bg:#F7F2EF; --surface:#fff; --ink:#242634; --muted:#74757D; --line:rgba(36,38,52,.08);
  --mint:#55CFBA; --mint-soft:#B5EAEC; --mint-line:#93DBCC; --yellow:#FFD629; --peach:#FFC9BB; --periwinkle:#9CADF1;
  --tint:#FBF8F6; --radius:20px; --radius-lg:28px; --wrap:1080px; --narrow:720px;
  --shadow:0 10px 30px rgba(36,38,52,.07);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:72px}
body{margin:0;background:var(--bg);color:var(--ink);line-height:1.65;overflow-wrap:anywhere;
  font-family:"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR","Hiragino Sans","PingFang SC",system-ui,sans-serif;
  -webkit-font-smoothing:antialiased}
/* 한국어만 낱말 단위 줄바꿈 (일본어·중국어는 글자 단위가 맞음) */
html:lang(ko) body{word-break:keep-all}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3,p{margin:0}
h1{font-size:clamp(32px,7vw,54px);line-height:1.2;letter-spacing:-.035em;font-weight:800}
h1 em{font-style:normal;background:linear-gradient(transparent 62%,var(--yellow) 62%)}
h2{font-size:clamp(24px,5vw,36px);line-height:1.28;letter-spacing:-.03em;font-weight:800}
h3{font-size:18px;line-height:1.4;letter-spacing:-.02em;font-weight:700}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.narrow{max-width:var(--narrow)}
.center{text-align:center}
section{padding:64px 0}
.tint{background:var(--tint)}
.tag{display:inline-block;margin-bottom:12px;padding:5px 12px;border-radius:100px;background:var(--mint-soft);
  color:#1E6F63;font-size:13px;font-weight:700;letter-spacing:.01em}
.sub{margin-top:10px;color:var(--muted);font-size:17px}
.lede{margin-top:16px;color:var(--muted);font-size:clamp(17px,2.4vw,20px)}
.hint{margin-top:12px;color:var(--muted);font-size:13px}
.more{display:inline-block;margin-top:24px;font-weight:700;text-decoration:none;border-bottom:2px solid var(--mint)}
.badge{display:inline-block;vertical-align:middle;margin-left:4px;padding:2px 8px;border-radius:100px;
  background:linear-gradient(90deg,#FFE680,#FFC94D);font-size:11px;font-weight:800;letter-spacing:.04em}
.skip{position:absolute;left:-999px;top:8px;padding:8px 14px;background:var(--ink);color:#fff;border-radius:10px;z-index:99}
.skip:focus{left:12px}

/* 머리 */
.top{position:sticky;top:0;z-index:20;background:rgba(247,242,239,.86);backdrop-filter:saturate(1.4) blur(14px);
  -webkit-backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:14px;height:60px}
.brand{flex:none}
.top nav{display:flex;gap:18px;margin-left:auto;font-size:15px;font-weight:600}
.top nav a{text-decoration:none;color:var(--muted)}
.top nav a:hover{color:var(--ink)}
.get{flex:none;padding:9px 16px;border-radius:100px;background:var(--ink);color:#fff;font-size:14px;font-weight:700;text-decoration:none}
.lang{position:relative;font-size:14px;font-weight:600}
.lang summary{list-style:none;cursor:pointer;padding:8px 12px;border-radius:100px;border:1px solid var(--line);background:var(--surface)}
.lang summary::-webkit-details-marker{display:none}
.lang summary::after{content:"";display:inline-block;margin-left:6px;border:4px solid transparent;border-top-color:var(--muted);transform:translateY(2px)}
.lang-list{position:absolute;right:0;top:calc(100% + 8px);min-width:140px;padding:6px;background:var(--surface);border-radius:16px;
  box-shadow:var(--shadow);border:1px solid var(--line)}
.lang-list a{display:block;padding:9px 12px;border-radius:10px;text-decoration:none}
.lang-list a:hover,.lang-list a[aria-current]{background:var(--tint)}

/* 스토어 버튼 */
.cta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.store{display:inline-flex;align-items:center;gap:8px;padding:13px 18px;border-radius:16px;background:var(--ink);color:#fff;
  font-size:15px;font-weight:700;text-decoration:none;transition:transform .15s ease}
.store:hover{transform:translateY(-2px)}
.store svg{width:20px;height:20px;flex:none}
.store[data-store="android"]{background:var(--surface);color:var(--ink);border:1px solid var(--line)}
/* 기기에 맞는 스토어만 보임 (PC 는 둘 다) */
[data-platform="ios"] .store[data-store="android"],[data-platform="android"] .store[data-store="ios"]{display:none}
[data-platform="android"] .store[data-store="android"]{background:var(--ink);color:#fff;border:0}

/* 첫 화면 */
.hero{padding:40px 0 56px;overflow:hidden}
.hero-grid{display:grid;gap:32px;align-items:center}
.hero-visual{position:relative;min-height:340px}
.hero-art{position:absolute;right:-6%;bottom:-8%;width:78%;max-width:520px;border-radius:var(--radius-lg);opacity:.9;
  animation:float 6s ease-in-out infinite}
@keyframes float{50%{transform:translateY(-8px)}}

/* 카드 시연: 세 장이 차례로 체크되고 보상이 나타남 (12초 반복) */
.demo{position:relative;z-index:1;width:min(300px,82%);padding:18px;background:var(--surface);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);border:1px solid var(--line)}
.demo-title{font-size:14px;font-weight:700;color:var(--muted)}
.demo ol{margin:10px 0 0;padding:0;list-style:none;display:grid;gap:8px}
.democard{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:16px;border:2px solid transparent;background:var(--tint);
  animation:card-done 12s calc(var(--i)*2.4s + 1s) infinite both}
.democard .emoji{flex:none;width:40px;height:40px;display:grid;place-items:center;background:var(--surface);border-radius:12px;font-size:22px}
.democard .text{flex:1;min-width:0}
.democard b{display:block;font-size:15px;line-height:1.3}
.democard small{display:block;color:var(--muted);font-size:12px;line-height:1.3}
.democard .check{flex:none;width:22px;height:22px;border-radius:50%;border:2px solid var(--line);position:relative;
  animation:check-done 12s calc(var(--i)*2.4s + 1s) infinite both}
.democard .check::after{content:"";position:absolute;left:6px;top:2px;width:5px;height:10px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg)}
@keyframes card-done{0%,8%{background:var(--tint);border-color:transparent}14%,82%{background:var(--mint-soft);border-color:var(--mint-line)}90%,100%{background:var(--tint);border-color:transparent}}
@keyframes check-done{0%,8%{background:transparent;border-color:var(--line);transform:scale(1)}12%{transform:scale(1.25)}14%,82%{background:var(--mint);border-color:var(--mint);transform:scale(1)}90%,100%{background:transparent;border-color:var(--line)}}
.demo-reward{margin-top:12px;padding:10px 12px;border-radius:14px;background:#FFF6CC;font-size:14px;font-weight:700;text-align:center;
  animation:reward 12s 8.4s infinite both}
@keyframes reward{0%{opacity:.35;transform:scale(.98)}8%,70%{opacity:1;transform:scale(1.03)}78%,100%{opacity:.35;transform:scale(.98)}}

/* 타일 */
.tiles{display:grid;gap:14px;margin-top:28px}
.tile{padding:22px;background:var(--surface);border-radius:var(--radius);border:1px solid var(--line)}
.tile img{width:72px;height:72px;object-fit:contain;margin-bottom:12px}
.tile p{margin-top:6px;color:var(--muted);font-size:15px}
.pictures .tile img{width:84px;height:84px;border-radius:14px;background:var(--tint);padding:6px;object-fit:cover}

/* ABA 원리 */
.aba-grid{display:grid;gap:24px;align-items:center}
.aba-grid>img{width:220px;margin:0 auto}
.points{margin:22px 0 0;padding:0;list-style:none;display:grid;gap:10px}
.points li{padding:16px 18px;background:var(--surface);border-radius:16px;border:1px solid var(--line)}
.points b{display:block;font-size:16px}
.points span{display:block;margin-top:2px;color:var(--muted);font-size:15px}

/* 안내 글 카드 */
.guidecards{display:grid;gap:12px;margin-top:24px}
.guidecard{display:flex;align-items:center;gap:14px;padding:16px;background:var(--surface);border-radius:var(--radius);
  border:1px solid var(--line);text-decoration:none;transition:transform .15s ease,box-shadow .15s ease}
.guidecard:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.guidecard img{flex:none;width:64px;height:64px;object-fit:contain}
.guidecard b{display:block;font-size:16px;line-height:1.35}
.guidecard small{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-top:4px;color:var(--muted);font-size:13px;line-height:1.45}

/* 앱 받기 묶음 */
.download{padding:56px 0}
.download-box{display:grid;gap:18px;justify-items:center;text-align:center;padding:36px 22px;border-radius:var(--radius-lg);
  background:linear-gradient(135deg,#E9F8F4,#FFF6CC)}
.download-box img{width:150px;border-radius:24px}
.download-box .cta{justify-content:center}

/* 자주 묻는 질문 */
.faq{margin-top:24px;display:grid;gap:10px}
.faq details{background:var(--surface);border-radius:16px;border:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;padding:16px 44px 16px 18px;font-weight:700;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:18px;top:22px;width:8px;height:8px;border:solid var(--muted);border-width:0 2px 2px 0;transform:rotate(45deg);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(-135deg);top:26px}
.faq .body{padding:0 18px 16px;color:var(--muted);font-size:15px}
.mail{display:inline-block;margin-top:18px;padding:13px 22px;border-radius:16px;background:var(--surface);border:1px solid var(--line);font-weight:700;text-decoration:none}

/* 안내 글 본문 */
.guide,.guide-index{padding:28px 0 8px}
.crumb{display:flex;flex-wrap:wrap;gap:6px;color:var(--muted);font-size:13px}
.crumb a{text-decoration:none}
.crumb i{font-style:normal}
.guide-head{margin:22px 0 8px}
.guide-head img{width:96px;height:96px;object-fit:contain;margin-bottom:14px}
.guide h1,.guide-index h1{font-size:clamp(28px,6vw,40px)}
.meta{margin-top:10px;color:var(--muted);font-size:13px}
.guide section{padding:28px 0 0}
.guide section h2{font-size:clamp(21px,4.2vw,26px)}
.guide section p{margin-top:12px;font-size:17px}
.guide section ul{margin:14px 0 0;padding:0;list-style:none;display:grid;gap:8px}
.guide section ul li{padding:13px 16px 13px 40px;background:var(--surface);border-radius:14px;border:1px solid var(--line);position:relative;font-size:16px}
.guide section ul li::before{content:"";position:absolute;left:16px;top:21px;width:10px;height:10px;border-radius:50%;background:var(--mint)}
.excards{margin:16px 0 0;padding:0;list-style:none;display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px}
.excard{position:relative;padding:14px;background:var(--surface);border-radius:var(--radius);border:2px solid var(--mint-line);text-align:center}
.excard .num{position:absolute;left:10px;top:10px;width:22px;height:22px;border-radius:50%;background:var(--mint);color:#fff;font-size:12px;font-weight:800;line-height:22px}
.excard .emoji{display:grid;place-items:center;height:64px;margin:6px 0 8px;border-radius:14px;background:var(--tint);font-size:34px}
.excard b{display:block;font-size:15px;line-height:1.3}
.excard small{display:block;margin-top:3px;color:var(--muted);font-size:12px;line-height:1.35}
.exreward{margin-top:12px;padding:12px;border-radius:14px;background:#FFF6CC;font-weight:700;text-align:center}
.inline-cta{margin-top:32px;padding:22px;border-radius:var(--radius);background:var(--ink);color:#fff;display:grid;gap:4px}
.inline-cta b{display:block;font-size:18px}
.inline-cta>div>span{color:rgba(255,255,255,.72);font-size:14px}
.inline-cta .cta{margin-top:14px}
.inline-cta .store{background:#fff;color:var(--ink);border:0}
.notice{margin-top:28px;color:var(--muted);font-size:13px}
.related{padding-top:28px}
.guidecards.wide{margin-top:28px}

/* 바닥 */
.bottom{padding:36px 0 96px;border-top:1px solid var(--line)}
.foot{display:grid;gap:14px}
.foot nav{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:14px;font-weight:600}
.foot nav a{text-decoration:none}
.fine{color:var(--muted);font-size:12px}

/* 아래쪽 앱 받기 띠 (휴대 기기) */
.getbar{position:fixed;left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom));z-index:30;display:flex;align-items:center;
  justify-content:space-between;gap:10px;padding:10px 10px 10px 18px;border-radius:20px;background:rgba(36,38,52,.94);color:#fff;
  box-shadow:0 12px 30px rgba(36,38,52,.28);font-weight:700;animation:rise .35s ease both}
.getbar[hidden]{display:none}
.getbar .cta{margin:0}
.getbar .store{padding:10px 14px;background:#fff;color:var(--ink);border:0;font-size:14px}
@keyframes rise{from{transform:translateY(20px);opacity:0}}

/* 나타나기 */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease;transition-delay:calc(var(--i,0)*70ms)}
.reveal.in{opacity:1;transform:none}

@media (min-width:720px){
  section{padding:88px 0}
  .hero{padding:72px 0 88px}
  .hero-grid{grid-template-columns:1.05fr .95fr}
  .hero-visual{min-height:420px}
  .tiles.three{grid-template-columns:repeat(3,1fr)}
  .tiles.four{grid-template-columns:repeat(4,1fr)}
  .aba-grid{grid-template-columns:300px 1fr;gap:48px}
  .aba-grid>img{width:300px}
  .guidecards{grid-template-columns:repeat(2,1fr)}
  .download-box{grid-template-columns:auto 1fr;justify-items:start;text-align:left;padding:44px 48px;gap:36px}
  .download-box .cta{justify-content:flex-start}
  .inline-cta{grid-template-columns:1fr auto;align-items:center}
  .inline-cta .cta{margin-top:0}
  .bottom{padding-bottom:40px}
}
@media (max-width:719px){
  .top nav{display:none}
  .lang{margin-left:auto}
  .tiles.four{grid-template-columns:repeat(2,1fr)}
  .tiles.four .tile{padding:16px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}