/* ═══════════ IEUM X — immersive 3D redesign ═══════════ */
:root{
  --bg:#07060d; --bg2:#0e0c18; --ink:#f2ead9; --dim:#a89a80;
  --gold:#d9b47c; --gold-hi:#f0d5a3; --line:rgba(217,180,124,.16);
  --serif:'Noto Serif KR',ui-serif,serif;
  --sans:'Pretendard','Noto Sans KR',-apple-system,system-ui,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
[hidden]{display:none!important}
.detail:not(.open){pointer-events:none}
html{scroll-behavior:smooth}
html:focus-within{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-weight:350;
  overflow-x:hidden;line-height:1.6;-webkit-font-smoothing:antialiased}
::selection{background:var(--gold);color:#141109}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
img{max-width:100%;display:block}

/* ── canvas / grain / cursor ── */
.nebula{position:fixed;inset:0;z-index:0;pointer-events:none;background:
  radial-gradient(52% 44% at 74% 22%,rgba(88,64,150,.20),transparent 70%),
  radial-gradient(46% 42% at 16% 70%,rgba(46,74,140,.16),transparent 70%),
  radial-gradient(34% 30% at 58% 84%,rgba(120,74,140,.10),transparent 72%),
  radial-gradient(70% 60% at 50% 40%,rgba(20,16,40,.5),transparent 80%)}
#gl{position:fixed;inset:0;width:100%;height:100%;z-index:1;pointer-events:none}
body.no3d #gl{display:none}
body.no3d .s-hero{background:radial-gradient(120% 90% at 70% 40%,#2a2113 0%,#07060d 62%)}
.grain{position:fixed;inset:-50%;z-index:60;pointer-events:none;opacity:.055;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  animation:grain 7s steps(8) infinite}
@keyframes grain{0%{transform:translate(0,0)}25%{transform:translate(-4%,3%)}50%{transform:translate(3%,-4%)}75%{transform:translate(-2%,-2%)}100%{transform:translate(0,0)}}
.cursor-dot,.cursor-ring{position:fixed;top:0;left:0;z-index:200;pointer-events:none;border-radius:50%;
  transform:translate(-50%,-50%);mix-blend-mode:difference}
.cursor-dot{width:7px;height:7px;background:var(--gold-hi)}
.cursor-ring{width:38px;height:38px;border:1px solid rgba(240,213,163,.75);transition:width .28s,height .28s,opacity .28s}
body.cursor-big .cursor-ring{width:74px;height:74px;opacity:.9}
@media (pointer:coarse){.cursor-dot,.cursor-ring{display:none}}

/* ── loader ── */
#loader{position:fixed;inset:0;z-index:300;background:var(--bg);display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:18px;transition:opacity .7s ease,visibility .7s}
#loader-path{stroke-dasharray:260;stroke-dashoffset:260;animation:draw 1.6s ease forwards}
@keyframes draw{to{stroke-dashoffset:0}}
.loader-word{font-family:var(--serif);font-weight:900;font-size:28px;letter-spacing:.35em;margin-left:.35em;color:var(--gold-hi)}
.loader-count{font-size:12px;letter-spacing:.2em;color:var(--dim)}
body.ready #loader{opacity:0;visibility:hidden}

/* ── header ── */
.skip{position:absolute;left:-9999px;top:0;z-index:400;background:var(--gold);color:#141109;padding:10px 16px}
.skip:focus{left:12px;top:12px}
.hd{position:fixed;top:0;left:0;right:0;z-index:100;display:flex;align-items:center;justify-content:space-between;
  padding:22px clamp(20px,4vw,56px);transition:background .4s,backdrop-filter .4s,padding .4s}
body.scrolled .hd{background:rgba(9,8,16,.72);backdrop-filter:blur(14px);padding-top:14px;padding-bottom:14px;
  border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:baseline;gap:9px}
.brand-symbol{color:var(--gold);font-size:24px;line-height:1}
.brand b{font-family:var(--serif);font-weight:900;font-size:21px;letter-spacing:.06em}
.brand-caption{font-size:9px;letter-spacing:.34em;color:var(--dim)}
.hd-nav{display:flex;gap:clamp(18px,3vw,44px);font-size:14px;letter-spacing:.04em}
.hd-nav a{position:relative;padding:4px 0}
.hd-nav a::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;background:var(--gold);
  transform:scaleX(0);transform-origin:right;transition:transform .35s cubic-bezier(.6,0,.2,1)}
.hd-nav a:hover::after{transform:scaleX(1);transform-origin:left}
.nav-contact{color:var(--gold-hi)}
.menu-btn{display:none;width:44px;height:44px;flex-direction:column;align-items:center;justify-content:center;gap:7px}
.menu-btn i{display:block;width:26px;height:1.5px;background:var(--ink);transition:transform .35s,opacity .35s}
.menu-btn[aria-expanded="true"] i:first-child{transform:translateY(4.2px) rotate(45deg)}
.menu-btn[aria-expanded="true"] i:last-child{transform:translateY(-4.2px) rotate(-45deg)}
.fullmenu[hidden]{display:none}
.fullmenu{position:fixed;inset:0;z-index:90;background:rgba(9,8,16,.96);backdrop-filter:blur(18px);
  display:flex;flex-direction:column;justify-content:center;padding:0 9vw;gap:6vh}
.fullmenu nav{display:flex;flex-direction:column;gap:2px}
.fullmenu a{font-family:var(--serif);font-weight:900;font-size:clamp(34px,9vw,64px);line-height:1.5;
  display:flex;align-items:baseline;gap:18px;color:var(--ink)}
.fullmenu a small{font-family:var(--sans);font-weight:350;font-size:12px;color:var(--gold);letter-spacing:.2em}
.fullmenu a:hover{color:var(--gold-hi)}
.fullmenu p{font-size:11px;letter-spacing:.22em;color:var(--dim)}

/* ── shared ── */
main{position:relative;z-index:2}
.section-label{display:flex;justify-content:space-between;font-size:11px;letter-spacing:.24em;color:var(--dim);
  border-top:1px solid var(--line);padding-top:16px;margin-bottom:clamp(34px,6vh,64px);text-transform:uppercase}
[data-split] .ch{display:inline-block;transform:translateY(115%) rotate(4deg);transition:transform .9s cubic-bezier(.19,1,.22,1)}
.inview [data-split] .ch,body.ready .s-hero [data-split] .ch{transform:translateY(0) rotate(0)}
em{font-style:normal}

/* ── hero ── */
.s-hero{position:relative;min-height:100vh;min-height:100svh;display:flex;flex-direction:column;justify-content:center;
  padding:0 clamp(20px,4vw,56px);overflow:hidden}
.hero-art{position:absolute;inset:-4%;background:url(assets/img/hero-cut.webp) center/cover no-repeat;
  transform:scale(1.06);will-change:transform;transition:opacity 1.4s .4s;opacity:0}
.hero-art .glint{position:absolute;inset:0;mix-blend-mode:screen;will-change:background}
body.ready .hero-art{opacity:1}
.hero-shade{position:absolute;inset:0;background:
  linear-gradient(100deg,rgba(9,8,16,.72) 20%,rgba(9,8,16,.08) 52%,rgba(9,8,16,.18) 100%),
  linear-gradient(rgba(9,8,16,.2),transparent 22%,transparent 74%,#07060d 99%)}
.hero-frame{position:absolute;inset:clamp(12px,2vw,28px);border:1px solid var(--line);pointer-events:none;
  opacity:0;transition:opacity 1.4s .9s}
body.ready .hero-frame{opacity:1}
.hero-top{position:absolute;top:86px;left:clamp(20px,4vw,56px);right:clamp(20px,4vw,56px);
  display:flex;justify-content:space-between;font-size:10.5px;letter-spacing:.3em;color:var(--dim)}
.hero-center{max-width:1200px;margin-top:4vh}
.eyebrow{display:flex;align-items:center;gap:12px;font-size:11px;letter-spacing:.3em;color:var(--gold);
  margin-bottom:3.2vh;opacity:0;transition:opacity .9s .5s}
body.ready .eyebrow{opacity:1}
.eyebrow i{width:44px;height:1px;background:var(--gold)}
.hero-title{font-family:var(--serif);font-weight:900;font-size:clamp(52px,10.5vw,148px);line-height:1.06;letter-spacing:-.015em}
.ht-line{display:block;overflow:hidden;padding-bottom:.06em;margin-bottom:-.06em}
.ht-inner{display:inline-block}
.ht-inner.outline{color:transparent;-webkit-text-stroke:1.5px var(--gold);text-shadow:none}
.ht-inner.gold{color:var(--gold-hi)}
.hero-sub{margin-top:3.6vh;font-size:clamp(15px,1.35vw,18px);color:var(--dim);line-height:1.9;
  opacity:0;transform:translateY(18px);transition:opacity .9s 1s,transform .9s 1s}
body.ready .hero-sub{opacity:1;transform:none}
.hero-cta{display:inline-flex;align-items:center;gap:16px;margin-top:4.4vh;font-size:15px;letter-spacing:.06em;
  opacity:0;transition:opacity .9s 1.25s}
body.ready .hero-cta{opacity:1}
.hero-cta b{display:grid;place-items:center;width:52px;height:52px;border:1px solid var(--gold);border-radius:50%;
  color:var(--gold-hi);font-weight:400;transition:background .35s,color .35s,transform .35s}
.hero-cta:hover b{background:var(--gold);color:#141109;transform:rotate(45deg)}
.hero-side{position:absolute;right:clamp(28px,3.4vw,52px);top:50%;transform:translateY(-50%);
  display:flex;flex-direction:column;align-items:center;gap:16px;font-size:10px;letter-spacing:.3em;color:var(--dim)}
.hero-side i{width:1px;height:16vh;background:linear-gradient(var(--line),var(--gold),var(--line))}
.hero-side span:last-child{writing-mode:vertical-rl}
.hero-bottom{position:absolute;bottom:34px;left:clamp(20px,4vw,56px);right:clamp(20px,4vw,56px);
  display:flex;justify-content:space-between;align-items:center;font-size:10.5px;letter-spacing:.26em;color:var(--dim)}
.arrow-down{display:inline-block;animation:dip 2s ease-in-out infinite}
@keyframes dip{0%,100%{transform:translateY(0)}50%{transform:translateY(5px)}}

/* ── ticker ── */
.ticker{position:relative;z-index:2;padding:7vh 0 6vh;transform:rotate(-1.6deg);overflow:hidden}
.tk{display:flex;white-space:nowrap;font-family:var(--serif);font-weight:900;font-size:clamp(34px,5.2vw,74px);line-height:1.3}
.tk div{display:flex;flex-shrink:0;animation:slide 46s linear infinite}
.tk span{color:var(--gold);font-size:.5em;align-self:center;margin:0 26px}
.tk-a{color:transparent;-webkit-text-stroke:1px rgba(217,180,124,.55)}
.tk-b{color:var(--ink);margin-top:-6px}
.tk-b div{animation-direction:reverse;animation-duration:56s}
@keyframes slide{to{transform:translateX(-100%)}}

/* ── platforms (horizontal world) ── */
.s-plat{position:relative}
.plat-sticky{position:sticky;top:0;height:100vh;height:100svh;overflow:hidden;display:flex;flex-direction:column}
.plat-head{padding:clamp(68px,9vh,96px) clamp(20px,4vw,56px) 0}
.plat-title{font-family:var(--serif);font-weight:900;font-size:clamp(28px,3.5vw,48px);line-height:1.14}
.plat-title em{color:transparent;-webkit-text-stroke:1.2px var(--gold)}
.plat-sub{margin-top:14px;color:var(--dim);font-size:14.5px}
.drag-hint{display:inline-block;margin-left:18px;font-weight:500;font-size:11px;letter-spacing:.14em;color:var(--gold);
  border:1px solid var(--line);padding:5px 12px;border-radius:99px}
.plat-track{display:flex;align-items:center;gap:clamp(28px,4vw,64px);height:100%;
  padding:2vh clamp(20px,6vw,90px) 8vh;will-change:transform}
.pcard{position:relative;flex-shrink:0}
.pnum{position:absolute;top:-.58em;left:-.14em;z-index:0;font-family:var(--serif);font-weight:900;
  font-size:clamp(90px,11vw,160px);line-height:1;color:transparent;-webkit-text-stroke:1px rgba(217,180,124,.3)}
.pcard-btn{position:relative;z-index:1;display:block;height:clamp(320px,52vh,580px);aspect-ratio:3/4;width:auto;
  overflow:hidden;text-align:left;outline-offset:4px}
.pcard-btn::after{content:"";position:absolute;inset:12px;border:1px solid rgba(240,213,163,.35);z-index:4;
  pointer-events:none;transition:inset .5s cubic-bezier(.19,1,.22,1)}
.pcard-btn:hover::after{inset:0}
.pimg{position:absolute;inset:0;background:var(--img) center/cover no-repeat;transform:scale(1.06);
  transition:transform 1.1s cubic-bezier(.19,1,.22,1);will-change:transform}
.pcard-btn:hover .pimg{transform:scale(1.13)}
.pveil{position:absolute;inset:0;background:linear-gradient(12deg,rgba(9,8,6,.86) 8%,rgba(9,8,6,.12) 46%,rgba(9,8,6,.28) 100%)}
.pcat{position:absolute;top:22px;left:22px;right:22px;z-index:3;display:flex;justify-content:space-between;
  font-size:10.5px;letter-spacing:.24em;color:rgba(242,234,217,.92)}
.pcat b{font-weight:400;transition:transform .4s}
.pcard-btn:hover .pcat b{transform:translate(3px,-3px)}
.pname{position:absolute;left:20px;bottom:86px;z-index:3;font-family:var(--serif);font-weight:900;
  font-size:clamp(38px,4.2vw,58px);color:#fff;letter-spacing:.02em;text-shadow:0 4px 30px rgba(0,0,0,.45)}
.pname .neon{color:var(--gold-hi)}
.pcopy{position:absolute;left:22px;right:22px;bottom:24px;z-index:3;display:flex;flex-direction:column;gap:3px}
.pcopy strong{font-weight:700;font-size:15px}
.pcopy span{font-size:12.5px;color:rgba(242,234,217,.75)}
.pcard-end{width:clamp(320px,40vw,560px);display:grid;place-items:center}
.pend{display:flex;flex-direction:column;gap:6px;font-family:var(--serif);font-weight:900;
  font-size:clamp(30px,3.6vw,52px);line-height:1.2;letter-spacing:.02em}
.pend .gold{color:transparent;-webkit-text-stroke:1.2px var(--gold)}
.plat-progress{position:absolute;bottom:26px;left:clamp(20px,4vw,56px);right:clamp(20px,4vw,56px);
  display:flex;align-items:center;gap:18px;font-size:11px;letter-spacing:.2em;color:var(--dim)}
.plat-progress i{flex:1;height:1px;background:var(--line);position:relative}
.plat-progress b{position:absolute;left:0;top:0;height:100%;width:0;background:var(--gold);transition:width .15s linear}

/* mobile: vertical stack */
@media (max-width:820px){
  .plat-sticky{position:relative;height:auto;overflow:visible}
  .plat-track{flex-direction:column;align-items:stretch;gap:60px;height:auto;
    padding:6vh clamp(20px,5vw,32px) 8vh}
  .pcard{width:100%}
  .pcard-btn{width:100%;height:auto;aspect-ratio:4/5}
  .pnum{font-size:clamp(72px,20vw,110px)}
  .pcard-end{width:100%;min-height:24vh}
  .pend{text-align:center;align-items:center}
  .plat-progress{display:none}
  .drag-hint{display:none}
}

/* ── philosophy ── */
.s-philo{position:relative;padding:16vh clamp(20px,4vw,56px) 14vh;background:linear-gradient(#07060d, #12101c 30%, #12101c 70%, #07060d)}
.philo-star{position:absolute;top:12vh;right:8vw;font-size:clamp(80px,14vw,190px);color:rgba(217,180,124,.2);
  animation:spin 34s linear infinite;line-height:1}
@keyframes spin{to{transform:rotate(360deg)}}
.philo-main{max-width:1100px}
.philo-main h2{font-family:var(--serif);font-weight:900;font-size:clamp(36px,6vw,84px);line-height:1.22}
.philo-main em{color:transparent;-webkit-text-stroke:1.4px var(--gold)}
.philo-main p{margin-top:4.5vh;font-size:clamp(14.5px,1.25vw,17px);color:var(--dim);line-height:2.05;max-width:640px}
.values{margin-top:12vh;border-top:1px solid var(--line)}
.values article{position:relative;display:grid;grid-template-columns:180px 1fr 1.4fr;gap:24px;align-items:baseline;
  padding:4.2vh 6px;border-bottom:1px solid var(--line);transition:padding .45s}
.values article:hover{padding-left:22px}
.v-num{font-size:11px;letter-spacing:.24em;color:var(--gold)}
.values h3{font-family:var(--serif);font-weight:900;font-size:clamp(22px,2.6vw,34px)}
.values p{color:var(--dim);font-size:14.5px}
.v-line{position:absolute;left:0;bottom:-1px;height:1px;width:0;background:var(--gold-hi);transition:width .7s cubic-bezier(.19,1,.22,1)}
.values article:hover .v-line{width:100%}
@media (max-width:820px){.values article{grid-template-columns:1fr;gap:8px}}

/* ── contact ── */
.s-contact{position:relative;min-height:100vh;display:flex;flex-direction:column;justify-content:center;
  padding:14vh clamp(20px,4vw,56px) 10vh}
.contact-main{display:flex;align-items:center;justify-content:space-between;gap:5vw;flex-wrap:wrap}
.contact-main h2{font-family:var(--serif);font-weight:900;font-size:clamp(48px,8.4vw,124px);line-height:1.1}
.shimmer{background:linear-gradient(100deg,var(--gold) 20%,#fff2d8 40%,var(--gold) 60%);
  -webkit-background-clip:text;background-clip:text;color:transparent;background-size:220% 100%;
  animation:shine 4.5s ease-in-out infinite}
@keyframes shine{0%,100%{background-position:120% 0}50%{background-position:-20% 0}}
.contact-circle{position:relative;display:grid;place-items:center;width:clamp(180px,20vw,250px);aspect-ratio:1;
  border:1px solid var(--gold);border-radius:50%;text-align:center;font-size:15.5px;line-height:1.65;letter-spacing:.04em;
  transition:background .45s,color .45s;overflow:hidden}
.contact-circle b{position:absolute;right:16%;top:16%;font-weight:400;color:var(--gold-hi);transition:transform .45s}
.contact-circle:hover{background:var(--gold);color:#141109}
.contact-circle:hover b{color:#141109;transform:translate(4px,-4px)}
.contact-bottom{margin-top:12vh;display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;
  border-top:1px solid var(--line);padding-top:4vh}
.contact-bottom p{color:var(--dim);font-size:14.5px}
.contact-links{display:flex;flex-direction:column;gap:8px;font-size:clamp(17px,1.8vw,24px);text-align:right}
.contact-links a span{color:var(--gold);font-size:.8em}
.contact-links a:hover{color:var(--gold-hi)}

/* ── footer ── */
.ft{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:26px clamp(20px,4vw,56px);border-top:1px solid var(--line);font-size:12.5px;color:var(--dim)}
.ft-top{display:grid;place-items:center;width:44px;height:44px;border:1px solid var(--line);border-radius:50%;
  transition:background .35s,color .35s}
.ft-top:hover{background:var(--gold);color:#141109}

/* ── detail overlay ── */
.detail{position:fixed;inset:0;z-index:150;display:flex;align-items:stretch;justify-content:flex-end}
.detail-bg{position:absolute;inset:0;background:rgba(5,4,10,.72);backdrop-filter:blur(8px);opacity:0;transition:opacity .45s}
.detail-panel{position:relative;width:min(760px,100%);background:#100e0a;border-left:1px solid var(--line);
  display:flex;flex-direction:column;transform:translateX(60px);opacity:0;
  transition:transform .55s cubic-bezier(.19,1,.22,1),opacity .45s}
.detail.open .detail-bg{opacity:1}
.detail.open .detail-panel{transform:none;opacity:1}
.detail-head{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;
  padding:clamp(22px,4vh,40px) clamp(20px,3.4vw,44px) 18px;border-bottom:1px solid var(--line)}
.detail-cat{font-size:10.5px;letter-spacing:.26em;color:var(--gold)}
#detail-title{font-family:var(--serif);font-weight:900;font-size:clamp(30px,4vw,46px);margin-top:6px}
.detail-close{font-size:13px;letter-spacing:.08em;color:var(--dim);padding:10px 14px;border:1px solid var(--line);
  border-radius:99px;transition:background .3s,color .3s;flex-shrink:0}
.detail-close:hover{background:var(--gold);color:#141109}
.detail-body{overflow-y:auto;padding:26px clamp(20px,3.4vw,44px) 60px}
.detail-desc{font-size:15.5px;line-height:1.9}
.detail-feats{list-style:none;margin:22px 0 0;display:flex;flex-direction:column}
.detail-feats li{padding:13px 2px;border-top:1px solid var(--line);font-size:14px;color:var(--dim);
  display:flex;gap:12px;align-items:baseline}
.detail-feats li::before{content:"✳";color:var(--gold);font-size:11px}
.detail-note{margin-top:20px;font-size:12.5px;color:var(--dim);border-left:2px solid var(--gold);padding-left:14px;line-height:1.8}
.detail-caps{margin-top:34px;display:flex;flex-direction:column;gap:26px}
.detail-caps figure{border:1px solid var(--line);background:#07060d}
.detail-caps figcaption{padding:10px 14px;font-size:11px;letter-spacing:.18em;color:var(--gold);border-bottom:1px solid var(--line)}
.detail-caps img{width:100%}
.cap-status{padding:22px 14px;font-size:13px;color:var(--dim)}
body.detail-open{overflow:hidden}

/* ── responsive / header mobile ── */
@media (max-width:820px){
  .hero-art{background-size:contain;background-position:center 42%}
  .hero-top{flex-direction:column;gap:5px;top:78px}
  .hero-top .ht-right{display:none}
  .hero-bottom{flex-direction:column;align-items:flex-start;gap:10px;font-size:9.5px}
  .hd-nav{display:none}
  .menu-btn{display:flex}
  .hero-side{display:none}
  .hero-top{top:76px}
  .contact-main{justify-content:flex-start}
  .contact-links{text-align:left}
  .detail-panel{width:100%}
}

/* ── reduced motion ── */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .tk div,.philo-star,.arrow-down,.shimmer,.grain{animation:none}
  [data-split] .ch{transition:none;transform:none}
  .hero-sub,.hero-cta,.eyebrow,.hero-frame{transition:none;opacity:1;transform:none}
  #loader{display:none}
}