/* 코스모스 3D 앱 랜딩 v2 (2026-11-06 · 관제) · 장면 그림 = 웹 체험판 엔진으로 직접 촬영(s-*.v2.webp) · 이름 v2 = 1년 캐시, 바꾸면 v3 */
:root{
  --bg:#02040a;--bg2:#060b18;--ink:#eef5ff;--sub:#aebbd0;--mute:#6f809c;--line:rgba(160,190,255,.14);
  --glass:rgba(12,20,42,.58);--cyan:#53e6ff;--gold:#ffcf3f;--coral:#ff6b5a;
  --r:20px;--ease:cubic-bezier(.2,.7,.1,1);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Pretendard","Malgun Gothic","Noto Sans KR",sans-serif;line-height:1.6;word-break:keep-all;overflow-wrap:anywhere;overflow-x:hidden}
a{color:inherit}
img{display:block;max-width:100%;height:auto}
figure{margin:0}
.w{max-width:1180px;margin:0 auto;padding:0 20px}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.32em;text-transform:uppercase;color:var(--cyan)}
.grad{background:linear-gradient(92deg,#d9f8ff 0%,#53e6ff 40%,#ffcf3f 100%);-webkit-background-clip:text;background-clip:text;color:transparent}

/* 상단 줄 */
.nav{position:fixed;inset:0 0 auto;z-index:50;transition:background .3s,backdrop-filter .3s,border-color .3s;border-bottom:1px solid transparent}
.nav.on{background:rgba(2,4,10,.72);-webkit-backdrop-filter:blur(14px) saturate(1.3);backdrop-filter:blur(14px) saturate(1.3);border-color:var(--line)}
.nav .w{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;letter-spacing:.02em}
.brand img{width:30px;height:30px;border-radius:8px}
.nav .links{display:flex;gap:22px;margin-left:auto;font-size:14px;color:var(--sub)}
.nav .links a{text-decoration:none}.nav .links a:hover{color:var(--ink)}
.nav .lang{font-size:13px;color:var(--mute)}.nav .lang a{color:var(--sub);text-decoration:none}.nav .lang b{color:var(--ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;border-radius:999px;font-weight:700;font-size:15px;text-decoration:none;transition:transform .2s var(--ease),background .2s,box-shadow .2s;white-space:nowrap}
.btn:active{transform:scale(.97)}
.btn.pri{background:linear-gradient(135deg,#ff7a5c,#ff4f6d);color:#fff;box-shadow:0 10px 30px rgba(255,90,100,.35)}
.btn.pri:hover{box-shadow:0 14px 40px rgba(255,90,100,.5)}
.btn.ghost{border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.04);color:var(--ink)}
.btn.ghost:hover{background:rgba(255,255,255,.1)}
.nav .btn{min-height:38px;padding:0 16px;font-size:13.5px}
@media (max-width:820px){.nav .links{display:none}.nav .lang{margin-left:auto}}
@media (max-width:420px){.nav .btn{display:none}}

/* 첫 화면 */
.hero{position:relative;min-height:100svh;display:flex;align-items:flex-end;overflow:hidden;isolation:isolate}
.hero .bg{position:absolute;inset:-4% -4% -4% -4%;z-index:-2;will-change:transform}
.hero .bg img{width:100%;height:100%;object-fit:cover;object-position:50% 40%;transform-origin:0% 62%;animation:drift 28s ease-in-out infinite alternate}
@keyframes drift{from{transform:scale(1.36)}to{transform:scale(1.46) translate3d(-1%,-.6%,0)}}
@media (max-width:760px){.hero .bg img{transform-origin:50% 50%}@keyframes drift{from{transform:scale(1.02)}to{transform:scale(1.1)}}}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;background:
  linear-gradient(180deg,rgba(2,4,10,.55) 0%,rgba(2,4,10,0) 22%,rgba(2,4,10,0) 45%,rgba(2,4,10,.82) 78%,var(--bg) 100%),
  radial-gradient(ellipse at 20% 85%,rgba(2,4,10,.7),transparent 60%)}
.hero .w{width:100%;padding-bottom:clamp(40px,9vh,96px)}
.hero h1{margin:14px 0 0;font-size:clamp(38px,7.4vw,92px);line-height:1.04;letter-spacing:-.035em;font-weight:850;max-width:13em}
.hero .lead{margin:18px 0 0;max-width:36em;font-size:clamp(16px,1.6vw,19px);color:#d3deee}
.hero .cta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:28px}
.store{display:inline-flex;align-items:center;gap:10px;min-height:52px;padding:0 18px 0 14px;border-radius:14px;background:rgba(0,0,0,.55);border:1px solid rgba(255,255,255,.2);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);text-decoration:none;color:#fff}
.store svg{width:24px;height:24px;flex:none}
.store span{display:flex;flex-direction:column;line-height:1.15}.store small{font-size:10.5px;color:var(--gold);letter-spacing:.04em}.store b{font-size:16px}
.live{display:inline-flex;align-items:center;gap:8px;margin-top:26px;padding:7px 14px;border-radius:999px;background:rgba(83,230,255,.08);border:1px solid rgba(83,230,255,.28);font-size:13px;color:#cdefff;font-variant-numeric:tabular-nums}
.live i{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);animation:pulse 1.6s ease-in-out infinite}
@keyframes pulse{50%{opacity:.3}}
.scroll{position:absolute;left:50%;bottom:18px;width:22px;height:36px;border:1.5px solid rgba(255,255,255,.35);border-radius:12px;transform:translateX(-50%)}
.scroll::after{content:"";position:absolute;left:50%;top:7px;width:3px;height:7px;margin-left:-1.5px;border-radius:2px;background:#fff;animation:wheel 1.8s ease-in-out infinite}
@keyframes wheel{0%{opacity:0;transform:translateY(0)}30%{opacity:1}100%{opacity:0;transform:translateY(12px)}}
@media (max-width:640px){.scroll{display:none}.hero .bg img{object-position:50% 30%}.hero::after{background:linear-gradient(180deg,rgba(2,4,10,.5) 0%,rgba(2,4,10,0) 18%,rgba(2,4,10,.35) 34%,rgba(2,4,10,.88) 52%,var(--bg) 100%)}.hero .eyebrow{letter-spacing:.18em}}

/* 숫자 띠 */
.stats{border-block:1px solid var(--line);background:linear-gradient(180deg,var(--bg),var(--bg2))}
.stats .w{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;padding-block:34px}
.stat{text-align:center}
.stat b{display:block;font-size:clamp(28px,3.6vw,44px);font-weight:850;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.stat span{font-size:13px;color:var(--sub)}
@media (max-width:720px){.stats .w{grid-template-columns:repeat(3,1fr);row-gap:22px}.stat:nth-child(n+4){grid-column:span 1}}

/* 장 */
.chap{position:relative;min-height:92svh;display:flex;align-items:center;overflow:hidden;isolation:isolate}
.chap .bg{position:absolute;inset:0;z-index:-2}
.chap .bg img{width:100%;height:100%;object-fit:cover;transform:scale(1.08);transition:transform 2.4s var(--ease)}
.chap.in .bg img{transform:scale(1)}
.chap::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(2,4,10,.92) 0%,rgba(2,4,10,.6) 38%,rgba(2,4,10,0) 70%),linear-gradient(180deg,var(--bg) 0%,transparent 16%,transparent 84%,var(--bg) 100%)}
.chap.r::after{background:linear-gradient(270deg,rgba(2,4,10,.92) 0%,rgba(2,4,10,.6) 38%,rgba(2,4,10,0) 70%),linear-gradient(180deg,var(--bg) 0%,transparent 16%,transparent 84%,var(--bg) 100%)}
.chap .w{width:100%}
.chap .txt{max-width:500px}
.chap.r .w{display:flex;justify-content:flex-end}
.chap .no{font-size:13px;font-weight:700;letter-spacing:.3em;color:var(--gold)}
.chap h2{margin:12px 0 0;font-size:clamp(30px,4.6vw,56px);line-height:1.12;letter-spacing:-.03em;font-weight:820}
.chap p{margin:16px 0 0;font-size:17px;color:#cfd9e8}
.chap ul{list-style:none;margin:22px 0 0;padding:0;display:grid;gap:10px}
.chap li{position:relative;padding-left:24px;color:var(--sub);font-size:15.5px}
.chap li::before{content:"";position:absolute;left:0;top:.62em;width:12px;height:2px;background:var(--cyan);border-radius:2px}
@media (max-width:760px){
  .chap{min-height:auto;display:block;padding:0 0 36px}
  .chap .bg{position:relative;inset:auto;aspect-ratio:16/10}
  .chap::after{background:linear-gradient(180deg,transparent 30%,var(--bg) calc(min(62.5vw,100%)))}
  .chap.r::after{background:linear-gradient(180deg,transparent 30%,var(--bg) calc(min(62.5vw,100%)))}
  .chap .w,.chap.r .w{display:block;margin-top:-42px;position:relative}
}

/* 셋 나란히(태양계 너머) */
.tri{padding:110px 0 40px}
.head{max-width:720px}
.head h2{margin:12px 0 0;font-size:clamp(30px,4.6vw,56px);line-height:1.12;letter-spacing:-.03em;font-weight:820}
.head p{margin:16px 0 0;color:var(--sub);font-size:17px}
.tri .cards{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:16px;margin-top:40px}
.shot{position:relative;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);background:#050915;min-height:340px}
.shot img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease)}
.shot:hover img{transform:scale(1.05)}
.shot .cap{position:absolute;left:0;right:0;bottom:0;padding:60px 20px 18px;background:linear-gradient(180deg,transparent,rgba(2,4,10,.92))}
.shot .cap b{display:block;font-size:19px}.shot .cap span{font-size:14px;color:var(--sub)}
@media (max-width:860px){.tri .cards{grid-template-columns:1fr}.shot{min-height:0;aspect-ratio:16/10}}

/* 오늘의 태양계 지도 */
.orrery{padding:110px 0}
.orrery .box{display:grid;grid-template-columns:1fr 1.15fr;gap:40px;align-items:center}
.orrery .panel{position:relative;aspect-ratio:1/1;border-radius:28px;border:1px solid var(--line);background:radial-gradient(circle at 50% 50%,#0b1430 0%,#050915 60%,#03060f 100%);overflow:hidden}
.orrery svg{width:100%;height:100%;display:block}
.orrery .ctl{margin-top:26px}
.orrery .date{font-size:clamp(26px,3.2vw,40px);font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.orrery .date small{display:block;font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--mute);margin-bottom:4px}
.orrery input[type=range]{width:100%;margin:18px 0 6px;accent-color:var(--cyan)}
.orrery .row{display:flex;justify-content:space-between;font-size:12.5px;color:var(--mute)}
.orrery .reset{margin-top:14px}
.orrery .facts{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:22px}
.orrery .fact{padding:12px 14px;border-radius:14px;background:rgba(255,255,255,.03);border:1px solid var(--line);font-size:13.5px;color:var(--sub)}
.orrery .fact b{display:block;color:var(--ink);font-size:15px;font-variant-numeric:tabular-nums}
@media (max-width:860px){.orrery .box{grid-template-columns:1fr}}

/* 할 거리 */
.todo{padding:100px 0}
.todo .grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:40px}
.tile{padding:24px;border-radius:var(--r);background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.015));border:1px solid var(--line);transition:border-color .3s,transform .3s var(--ease)}
.tile:hover{border-color:rgba(83,230,255,.4);transform:translateY(-3px)}
.tile svg{width:30px;height:30px;stroke:var(--cyan);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.tile h3{margin:16px 0 6px;font-size:18px}
.tile p{margin:0;color:var(--sub);font-size:14.5px}
@media (max-width:860px){.todo .grid{grid-template-columns:1fr 1fr}}
@media (max-width:540px){.todo .grid{grid-template-columns:1fr}}

/* 실제 앱 화면 */
.screens{padding:40px 0 100px}
.rail{display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding:36px 20px 18px;margin:0 auto;max-width:1180px;scrollbar-width:thin;scrollbar-color:#24304d transparent}
.rail::-webkit-scrollbar{height:6px}.rail::-webkit-scrollbar-thumb{background:#24304d;border-radius:3px}
.phone{flex:0 0 min(78vw,560px);scroll-snap-align:center;padding:10px;border-radius:30px;background:linear-gradient(145deg,#2a3348,#0c111d);box-shadow:0 30px 60px rgba(0,0,0,.55),inset 0 0 0 1px rgba(255,255,255,.08)}
.phone img{border-radius:22px;aspect-ratio:16/9;object-fit:cover;width:100%}
.phone figcaption{padding:12px 8px 4px;font-size:14px;color:var(--sub)}

/* 요금 */
.price{padding:100px 0}
.price .grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:40px}
.plan{padding:30px;border-radius:24px;border:1px solid var(--line);background:rgba(255,255,255,.025)}
.plan.full{background:linear-gradient(160deg,rgba(83,230,255,.12),rgba(255,207,63,.06) 60%,rgba(255,255,255,.02));border-color:rgba(83,230,255,.35);box-shadow:0 20px 60px rgba(83,230,255,.08)}
.plan .tag{font-size:12px;font-weight:700;letter-spacing:.2em;color:var(--mute)}.plan.full .tag{color:var(--gold)}
.plan h3{margin:8px 0 18px;font-size:26px;letter-spacing:-.02em}
.plan ul{list-style:none;margin:0;padding:0;display:grid;gap:11px}
.plan li{display:flex;gap:10px;color:#d0dbea;font-size:15.5px}
.plan li svg{flex:none;width:20px;height:20px;margin-top:2px;stroke:var(--cyan);fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
@media (max-width:760px){.price .grid{grid-template-columns:1fr}}

/* 웹 체험 띠 */
.trial{position:relative;margin:20px auto 0;max-width:1180px;border-radius:30px;overflow:hidden;isolation:isolate;border:1px solid var(--line)}
.trial{display:grid;grid-template-columns:1fr 1.1fr;align-items:center;gap:20px;background:radial-gradient(ellipse at 80% 50%,rgba(83,230,255,.14),transparent 60%),linear-gradient(135deg,#0b1430,#050915)}
.trial .bgimg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;opacity:.35}
.trial::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(2,4,10,.94) 30%,rgba(2,4,10,.6))}
.trial .in{padding:clamp(34px,6vw,70px);max-width:620px}
.trial .phone{margin:clamp(20px,4vw,50px);flex:none;transform:rotate(-2deg)}
@media (max-width:860px){.trial{grid-template-columns:1fr}.trial .phone{margin:0 24px 30px;transform:none}}
.trial h2{margin:10px 0 0;font-size:clamp(26px,3.6vw,42px);line-height:1.15;letter-spacing:-.025em}
.trial p{margin:14px 0 24px;color:#cfd9e8}
@media (max-width:760px){.trial{margin:0 20px}}

/* 자주 묻는 것 · 바닥 */
.faq{padding:100px 0 60px}
.faq details{border-bottom:1px solid var(--line);padding:18px 0}
.faq summary{cursor:pointer;list-style:none;font-size:17px;font-weight:700;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--cyan);font-weight:400;font-size:22px;line-height:1;transition:transform .25s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{margin:10px 0 0;color:var(--sub)}
.foot{border-top:1px solid var(--line);padding:34px 0 50px;font-size:13px;color:var(--mute)}
.foot nav{display:flex;flex-wrap:wrap;gap:8px 20px;margin-bottom:12px}.foot nav a{color:var(--sub);text-decoration:none}.foot nav a:hover{color:var(--ink)}
.foot p{margin:4px 0}

/* 스크롤에 따라 나타나기 */
.rv{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.08s}.rv.d2{transition-delay:.16s}.rv.d3{transition-delay:.24s}
.no-js .rv{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .hero .bg img{animation:none}
  .rv{opacity:1;transform:none;transition:none}
  .chap .bg img{transform:none;transition:none}
  .live i,.scroll::after{animation:none}
}