@import url('https://fonts.googleapis.com/css2?family=Spectral:ital,wght@0,400;0,500;0,600;1,400;1,500;1,600&family=Space+Mono:wght@400;700&family=Noto+Serif+KR:wght@400;500;600&display=swap');

:root{
  /* editorial palette */
  --paper:#f3efe6;
  --paper-2:#ece5d6;
  --card-paper:#faf7ef;
  --mustard:#f4b81d;
  --mustard-deep:#e8a712;
  --terra:#c9532f;
  --terra-deep:#b3492a;
  --sage:#cfcfc2;
  --ink:#211e18;
  --muted:#8d8576;
  --line:#ddd5c4;

  /* legacy var names remapped so existing markup stays coherent */
  --navy:#2a261f;
  --navy-2:#3a342a;
  --indigo:#c9532f;
  --cyan:#e0a41f;
  --accent:#c9532f;
  --bg:#f3efe6;
  --card:#faf7ef;
  --radius:8px;
  --shadow:0 22px 60px rgba(40,30,15,.14);
  --shadow-sm:0 8px 26px rgba(40,30,15,.09);

  --serif:'Spectral','Noto Serif KR',Georgia,serif;
  --mono:'Space Mono','Pretendard',ui-monospace,monospace;
  --sans:'Pretendard',-apple-system,BlinkMacSystemFont,system-ui,sans-serif;
  --side:300px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);color:var(--ink);background:var(--paper);
  line-height:1.7;-webkit-font-smoothing:antialiased;
  padding-left:var(--side);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1000px;margin:0 auto;padding:0 40px}
em{font-style:italic}

/* ---------------- SIDEBAR ---------------- */
.sidebar{
  position:fixed;left:0;top:0;width:var(--side);height:100vh;
  background:var(--paper);border-right:1px solid var(--line);
  padding:42px 38px 36px;display:flex;flex-direction:column;z-index:60;
}
.side-top{display:flex;align-items:flex-start;justify-content:space-between}
.logo{display:flex;flex-direction:column;line-height:.92;font-family:var(--serif)}
.logo span{font-size:3.4rem;font-weight:500;letter-spacing:-.01em}
.logo em{font-size:3.4rem;font-style:italic;font-weight:500;margin-left:.28em}
.meta{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.04em;color:var(--muted);
  margin-top:26px;line-height:2;text-transform:uppercase;
}
.side-nav{margin-top:26px;order:1;display:flex;flex-direction:column;gap:2px}
.sidebar .meta{order:2;margin-top:auto}
.side-nav a{
  font-family:var(--mono);font-size:.85rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink);padding:9px 0;display:flex;align-items:center;gap:11px;transition:.18s;
}
.side-nav a .bul{width:7px;height:7px;border-radius:50%;background:transparent;flex:none;transition:.18s}
.side-nav a:hover{color:var(--terra)}
.side-nav a:hover .bul{background:var(--line)}
.side-nav a.active{color:var(--terra)}
.side-nav a.active .bul{background:var(--terra)}
.side-nav a.side-sub{padding:6px 0 6px 22px;font-size:.74rem;letter-spacing:.06em;color:var(--muted);position:relative}
.side-nav a.side-sub::before{content:"└";position:absolute;left:7px;top:5px;color:var(--line)}
.side-nav a.side-sub:hover{color:var(--terra)}
.side-nav a.side-sub:hover::before{color:var(--terra)}
.side-nav a.side-sub2{padding:5px 0 5px 40px;font-size:.72rem;letter-spacing:.05em;color:var(--muted);position:relative}
.side-nav a.side-sub2::before{content:"└";position:absolute;left:25px;top:4px;color:var(--line)}
.side-nav a.side-sub2:hover{color:var(--terra)}
.side-nav a.side-sub2:hover::before{color:var(--terra)}
.side-foot{
  font-family:var(--mono);font-size:.66rem;letter-spacing:.1em;color:var(--muted);
  margin-top:26px;text-transform:uppercase;order:3;
}
.side-toggle{display:none;background:none;border:0;color:var(--ink);font-size:1.6rem;cursor:pointer;line-height:1}

/* ---------------- BUTTONS ---------------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-size:.74rem;
  letter-spacing:.14em;text-transform:uppercase;font-weight:700;padding:14px 26px;border-radius:999px;
  transition:.2s;cursor:pointer;border:1px solid var(--ink);
}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:#000;transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn-dark{background:var(--ink);color:var(--paper);border-color:var(--ink)}

/* ---------------- HERO / POSTCARDS (home) ---------------- */
.hero-wrap{padding:48px 0 24px}
.eyebrow{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;
  color:var(--terra);display:inline-flex;align-items:center;gap:9px;margin-bottom:18px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--terra)}

.stage{display:flex;justify-content:center;padding:8px 0 20px}
.stage-inner{position:relative;width:720px;height:600px}
.pc{position:absolute;border-radius:7px;box-shadow:var(--shadow)}
.pc.grey{width:340px;height:470px;top:34px;right:0;background:var(--sage);transform:rotate(2.4deg)}
.pc.terra{width:330px;height:516px;top:14px;right:78px;background:var(--terra);transform:rotate(-1.2deg)}
.pc.yellow{width:372px;height:560px;top:0;left:24px;background:var(--mustard);transform:rotate(-1.6deg);
  padding:54px 40px 40px;display:flex;flex-direction:column;align-items:center;text-align:center;overflow:hidden}

.cutout{position:absolute;top:-58px;left:50%;transform:translateX(-50%);
  width:128px;height:128px;border-radius:50%;background:var(--paper)}

.pc-title{font-family:var(--serif);color:var(--ink);font-size:2.55rem;line-height:1.06;
  font-weight:500;letter-spacing:-.015em;margin-top:10px}
.pc-title em{font-style:italic;font-weight:500}
.doodle{margin:24px 0 14px;color:var(--ink)}
.doodle svg{width:120px;height:auto;display:block;margin:0 auto}
.at-line{font-family:var(--serif);font-size:1.6rem;line-height:1.2;color:var(--ink);margin-top:auto}
.at-line .sm{display:block;font-size:.95rem;font-style:italic;color:#5b544a;margin-bottom:2px}
.at-line em{font-style:italic}

.tri-badge{position:absolute;left:30px;bottom:34px;width:118px;height:104px}
.tri-badge svg{width:100%;height:100%}
.tri-txt-s{font-family:var(--mono);font-size:8px;letter-spacing:.12em;fill:var(--ink)}
.tri-txt-b{font-family:var(--mono);font-size:21px;font-weight:700;fill:var(--ink)}

.fab-btn{position:absolute;right:24px;bottom:22px;width:74px;height:74px;border-radius:50%;
  background:var(--ink);color:var(--mustard);border:0;cursor:pointer;display:grid;place-items:center;
  font-family:var(--mono);font-size:.6rem;letter-spacing:.1em;text-align:center;line-height:1.3;
  box-shadow:0 14px 30px rgba(0,0,0,.3);transition:.2s}
.fab-btn:hover{transform:translateY(-3px) rotate(-6deg)}

.vtext{position:absolute;top:40px;left:18px;writing-mode:vertical-rl;transform:rotate(180deg);
  font-family:var(--mono);font-size:.66rem;letter-spacing:.22em;color:rgba(255,255,255,.85);text-transform:uppercase}
.stamp{position:absolute;width:88px;height:88px;border-radius:50%;border:1.5px dashed rgba(255,255,255,.6);
  display:grid;place-items:center;text-align:center;font-family:var(--mono);font-size:.52rem;
  letter-spacing:.08em;color:rgba(255,255,255,.8);text-transform:uppercase;line-height:1.5}
.stamp.dark{border-color:rgba(33,30,24,.35);color:rgba(33,30,24,.55)}
.pc.terra .stamp{top:26px;right:24px}
.pc.grey .stamp{top:26px;right:24px}
.pc.grey .lines{position:absolute;left:26px;right:26px;bottom:60px}
.pc.grey .lines i{display:block;height:1px;background:rgba(33,30,24,.18);margin:22px 0}
.pc.grey .recv{position:absolute;left:28px;top:150px;font-family:var(--serif);font-size:1.1rem;color:rgba(33,30,24,.45)}

/* ---------------- SECTIONS ---------------- */
section.block{padding:64px 0}
.rule{height:1px;background:var(--line);max-width:1000px;margin:0 auto}
.sec-head{max-width:780px;margin:0 0 40px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.kicker{font-family:var(--mono);font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--terra)}
.sec-head h2{font-family:var(--serif);font-size:clamp(1.7rem,3.4vw,2.6rem);font-weight:500;
  letter-spacing:-.02em;margin:14px 0 12px;line-height:1.18}
.sec-head h2 em{font-style:italic}
.sec-head p{color:#5d564a;font-size:1.04rem;max-width:62ch}

/* page header (sub pages) */
.page-head{padding:70px 0 30px;position:relative}
.page-head .grid{display:none}
.page-head .crumb{font-family:var(--mono);font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--terra);margin-bottom:16px}
.page-head h1{font-family:var(--serif);font-size:clamp(2rem,4.2vw,3.2rem);font-weight:500;letter-spacing:-.02em;line-height:1.12}
.page-head h1 em{font-style:italic}
.page-head p{color:#5d564a;margin-top:18px;font-size:1.06rem;max-width:64ch}

/* motive block */
.motive-card{background:var(--mustard);color:var(--ink);border-radius:var(--radius);
  padding:48px 50px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden}
.motive-card::after{content:"";position:absolute;right:-50px;top:-50px;width:180px;height:180px;border-radius:50%;
  border:1.5px dashed rgba(33,30,24,.25)}
.motive-card .q{font-family:var(--serif);font-style:italic;font-size:1.7rem;font-weight:500;color:var(--ink);
  margin-bottom:18px;position:relative;line-height:1.3}
.motive-card p{color:#43392b;font-size:1.04rem;position:relative}
.motive-card p strong{color:var(--ink);font-weight:700}

/* project / feature cards */
.pgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.pcard{background:var(--card-paper);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  transition:.22s;display:flex;flex-direction:column;box-shadow:var(--shadow-sm)}
.pcard:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.pcard .thumb{aspect-ratio:4/3;overflow:hidden;background:var(--paper-2)}
.pcard .thumb img{width:100%;height:100%;object-fit:cover;transition:.5s;filter:saturate(.96)}
.pcard:hover .thumb img{transform:scale(1.05)}
.pcard .body{padding:24px 26px 26px;display:flex;flex-direction:column;flex:1}
.ptag{font-family:var(--mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--terra);
  align-self:flex-start;margin-bottom:13px}
.pcard h3{font-family:var(--serif);font-size:1.3rem;font-weight:500;letter-spacing:-.01em;margin-bottom:9px;line-height:1.25}
.pcard p{color:#5d564a;font-size:.95rem;flex:1}
.pcard .chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px}
.pcard .go{margin-top:16px;font-family:var(--mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--terra)}
.chip{font-family:var(--mono);font-size:.68rem;letter-spacing:.04em;color:#6b6456;background:var(--paper);
  border:1px solid var(--line);padding:5px 10px;border-radius:999px}

/* detail rows */
.dwrap{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.dwrap.rev{direction:rtl}
.dwrap.rev>*{direction:ltr}
.d-media img{width:100%;border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--line)}
.d-num{font-family:var(--mono);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--terra)}
.d-title{font-family:var(--serif);font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:500;letter-spacing:-.02em;margin:10px 0 16px;line-height:1.22}
.d-title em{font-style:italic}
.d-text{color:#5d564a;font-size:1.03rem}
.d-text strong{color:var(--ink);font-weight:600}
.partlist{list-style:none;margin-top:24px;display:flex;flex-direction:column;gap:16px}
.partlist li{display:flex;gap:15px;align-items:flex-start}
.partlist .ico{flex:none;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  background:var(--ink);color:var(--mustard);font-family:var(--mono);font-weight:700;font-size:.78rem}
.partlist b{font-weight:700;color:var(--ink)}
.partlist span{color:#5d564a;font-size:.96rem}

/* feature grid */
.feat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.fcard{background:var(--card-paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
.fcard .fimg{aspect-ratio:16/10;overflow:hidden;background:var(--paper-2)}
.fcard .fimg img{width:100%;height:100%;object-fit:cover;filter:saturate(.96)}
.fcard .fbody{padding:26px 28px 28px}
.fcard .fnum{font-family:var(--mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--terra)}
.fcard h3{font-family:var(--serif);font-size:1.28rem;font-weight:500;margin:8px 0 11px;letter-spacing:-.01em;line-height:1.25}
.fcard p{color:#5d564a;font-size:.96rem}
.fcard .chips{margin-top:15px;display:flex;flex-wrap:wrap;gap:7px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.step{background:var(--card-paper);border:1px solid var(--line);border-radius:var(--radius);padding:24px 18px;text-align:center}
.step .sn{width:40px;height:40px;border-radius:50%;margin:0 auto 13px;display:grid;place-items:center;
  font-family:var(--mono);font-weight:700;color:var(--mustard);background:var(--ink)}
.step h4{font-family:var(--serif);font-size:1.05rem;font-weight:500;margin-bottom:4px}
.step p{color:var(--muted);font-family:var(--mono);font-size:.66rem;letter-spacing:.05em;text-transform:uppercase}

/* table */
.ctable-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);background:var(--card-paper)}
table.ctable{width:100%;border-collapse:collapse;min-width:680px;font-size:.94rem}
table.ctable th{background:var(--ink);color:var(--paper);font-family:var(--mono);font-weight:400;font-size:.68rem;
  letter-spacing:.12em;text-transform:uppercase;text-align:left;padding:14px 18px}
table.ctable td{padding:15px 18px;border-bottom:1px solid var(--line);color:#4f483c;vertical-align:top}
table.ctable tr:last-child td{border-bottom:0}
table.ctable tbody tr:nth-child(even){background:rgba(0,0,0,.018)}
.ctable .feat{font-family:var(--serif);font-weight:500;color:var(--ink);font-size:1.02rem}

/* values */
.vgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.vcard{padding:30px 28px;border-radius:var(--radius);border:1px solid var(--line);background:var(--card-paper);transition:.2s}
.vcard:hover{border-color:var(--terra);transform:translateY(-3px)}
.vcard .vico{width:50px;height:50px;border-radius:50%;display:grid;place-items:center;font-size:1.45rem;
  background:var(--paper);border:1px solid var(--line);margin-bottom:16px}
.vcard h4{font-family:var(--serif);font-size:1.18rem;font-weight:500;margin-bottom:8px;letter-spacing:-.01em}
.vcard p{color:#5d564a;font-size:.95rem}

/* resources dark section */
.res{background:var(--ink);color:var(--paper)}
.res .kicker{color:var(--mustard)}
.res .sec-head h2{color:var(--paper)}
.res .sec-head p{color:#b8b1a2}
.rgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.rcard{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:28px 24px;transition:.2s}
.rcard:hover{background:rgba(255,255,255,.1);transform:translateY(-4px)}
.rcard .rico{font-size:1.7rem;margin-bottom:13px}
.rcard h4{font-family:var(--serif);font-size:1.12rem;font-weight:500;margin-bottom:7px}
.rcard p{color:#b8b1a2;font-size:.9rem}
.rcard .soon{display:inline-block;margin-top:13px;font-family:var(--mono);font-size:.62rem;letter-spacing:.1em;
  text-transform:uppercase;color:var(--mustard);border:1px solid rgba(228,164,31,.4);padding:3px 9px;border-radius:999px}

/* pager */
.pager{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.pager a{flex:1;min-width:220px;background:var(--card-paper);border:1px solid var(--line);border-radius:var(--radius);padding:20px 24px;transition:.18s}
.pager a:hover{border-color:var(--terra)}
.pager .dir{font-family:var(--mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.pager .ttl{font-family:var(--serif);font-size:1.15rem;font-weight:500;color:var(--ink);margin-top:4px}
.pager a.next{text-align:right}

/* footer */
footer{background:var(--ink);color:#b8b1a2;padding:54px 0 44px;font-size:.92rem;margin-top:20px}
.foot-inner{display:flex;justify-content:space-between;align-items:flex-start;gap:36px;flex-wrap:wrap}
footer .brand{font-family:var(--serif);font-size:1.5rem;color:var(--paper);margin-bottom:12px;font-weight:500}
footer .brand em{font-style:italic}
footer p{max-width:46ch;color:#9a9385}
.foot-cols{font-family:var(--mono);font-size:.74rem;letter-spacing:.06em;color:#9a9385;line-height:2.2;text-transform:uppercase}
.foot-cols a:hover{color:var(--mustard)}
.foot-note{margin-top:30px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);
  font-family:var(--mono);font-size:.68rem;letter-spacing:.06em;color:#7c7567;text-transform:uppercase}

/* reveal */
.reveal{opacity:0;transform:translateY(24px);transition:.7s cubic-bezier(.16,.84,.44,1)}
.reveal.in{opacity:1;transform:none}

/* ---------------- RESPONSIVE ---------------- */
@media(max-width:1080px){
  .stage-inner{transform:scale(.86);transform-origin:top center}
  .stage{padding-bottom:0}
}
@media(max-width:920px){
  :root{--side:0px}
  body{padding-left:0}
  .sidebar{position:sticky;width:100%;height:auto;flex-direction:row;flex-wrap:wrap;align-items:center;
    padding:18px 22px;border-right:0;border-bottom:1px solid var(--line)}
  .side-top{width:100%;align-items:center}
  .logo{flex-direction:row;gap:.2em}
  .logo span,.logo em{font-size:1.7rem}
  .meta,.side-foot{display:none}
  .side-toggle{display:block}
  .side-nav{margin:0;width:100%;display:none;padding-top:14px}
  .side-nav.open{display:flex}
  .side-nav a{padding:11px 0}
  .wrap{padding:0 24px}
  .pgrid,.vgrid,.feat-grid{grid-template-columns:1fr}
  .rgrid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .dwrap,.dwrap.rev{grid-template-columns:1fr;direction:ltr;gap:28px}
  .dwrap .d-media{order:-1}
  section.block{padding:48px 0}
  .motive-card{padding:34px 26px}
  .stage-inner{transform:scale(.92);width:360px;height:600px}
  .stage-inner .pc.grey,.stage-inner .pc.terra{display:none}
  .stage-inner .pc.yellow{left:50%;transform:translateX(-50%) rotate(-1.5deg)}
}
@media(max-width:520px){
  .rgrid,.steps{grid-template-columns:1fr}
  .stage-inner{transform:scale(.8);transform-origin:top center}
}