/* 비아랩 포털 — 어두운 절제 테마, 황금색 강조, 모바일 대응 */
:root{
  --bg:#0b1416;
  --bg-2:#101d20;
  --panel:#132225;
  --panel-2:#182a2e;
  --line:#24393d;
  --line-soft:#1c2f33;
  --ink:#d7e2df;
  --ink-dim:#8ba3a0;
  --ink-faint:#5f7573;
  --gold:#d4a84b;
  --gold-bright:#e8c574;
  --gold-dim:#8f7434;
  --max:1100px;
  --radius:10px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Pretendard","Noto Sans KR","Malgun Gothic",Arial,sans-serif;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  word-break:keep-all;
}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
img{display:block;max-width:100%;height:auto}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{line-height:1.3;letter-spacing:-.02em;color:var(--gold)}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

.portal{min-height:100vh;display:flex;flex-direction:column}

/* ── Header ─────────────────────────────────────── */
.ptl-header{
  position:sticky;top:0;z-index:10;
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;flex-wrap:wrap;
  padding:0 max(4vw,calc((100vw - var(--max))/2));
  min-height:64px;
  background:#0b1416ee;
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-soft);
}
.ptl-brand{display:flex;align-items:center;gap:11px;white-space:nowrap}
.ptl-brand-symbol{
  font-size:28px;font-weight:300;line-height:1;
  color:var(--gold);
  width:34px;display:flex;align-items:center;justify-content:center;
}
.ptl-brand-text{font-size:16px;font-weight:700;line-height:1.2}
.ptl-brand-text small{display:block;font-size:9px;letter-spacing:.14em;font-weight:400;color:var(--ink-faint);margin-top:2px}
.ptl-brand:hover .ptl-brand-text{color:var(--gold-bright)}

.ptl-header-right{display:flex;align-items:center;gap:22px}
.ptl-nav{display:flex;gap:24px;font-size:13px;font-weight:600}
.ptl-nav a{color:var(--ink-dim);transition:color .15s}
.ptl-nav a:hover{color:var(--ink)}
.ptl-nav a.is-current{color:var(--gold)}

.ptl-lang{display:flex;gap:2px}
.ptl-lang button{
  border:1px solid var(--line);
  background:transparent;
  color:var(--ink-dim);
  font-size:11px;
  font-weight:600;
  padding:5px 12px;
  border-radius:99px;
  transition:all .15s;
}
.ptl-lang button:hover{color:var(--ink);border-color:var(--ink-faint)}
.ptl-lang button.is-active{
  color:var(--gold);
  border-color:var(--gold-dim);
  background:#d4a84b14;
}

/* ── Main ────────────────────────────────────────── */
.ptl-main{
  flex:1;
  width:100%;
  max-width:var(--max);
  margin:0 auto;
  padding:56px max(4vw,calc((100vw - var(--max))/2)) 80px;
}
.ptl-main:focus{outline:none}

/* ── Home ────────────────────────────────────────── */
.home-hero{
  display:grid;
  grid-template-columns:1.1fr 1fr;
  gap:48px;
  align-items:center;
  min-height:420px;
}
.home-hero-copy{padding-right:10px}
.home-eyebrow{
  font-size:10px;letter-spacing:.16em;font-weight:600;
  color:var(--gold);
  display:flex;align-items:center;gap:8px;
  margin-bottom:24px;
}
.home-eyebrow::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--gold);flex:none}
.home-title{
  font-size:clamp(30px,3.6vw,48px);
  font-weight:600;
  color:var(--gold);
  margin-bottom:18px;
}
.home-desc{
  font-size:15px;
  color:var(--ink-dim);
  line-height:1.85;
  margin-bottom:28px;
}
.home-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;
  padding:11px 22px;
  border-radius:8px;
  border:1px solid transparent;
  transition:all .15s;
}
.btn-primary{background:var(--gold);color:#1a1206}
.btn-primary:hover{background:var(--gold-bright)}
.btn-ghost{border-color:var(--line);color:var(--ink-dim)}
.btn-ghost:hover{border-color:var(--ink-faint);color:var(--ink)}
.home-hero-art{position:relative;display:flex;justify-content:center}
.home-hero-art img{
  width:100%;max-width:480px;
  filter:brightness(.85) saturate(1.1);
}
.home-hero-art::after{
  content:"";
  position:absolute;inset:0;
  border-radius:16px;
  background:linear-gradient(135deg,#0b141688 0%,transparent 60%);
  pointer-events:none;
}
.home-research-strip{margin-top:56px}
.home-strip-label{
  font-size:10px;letter-spacing:.14em;font-weight:600;
  color:var(--ink-faint);
  margin-bottom:16px;
  display:flex;align-items:center;gap:10px;
}
.home-strip-label::after{content:"";flex:1;height:1px;background:var(--line-soft)}
.home-research-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px}
.home-rcard{
  display:flex;align-items:center;gap:14px;
  padding:16px 18px;
  background:var(--panel);
  border:1px solid var(--line-soft);
  border-radius:var(--radius);
  transition:border-color .15s,transform .15s;
  min-width:0;
}
.home-rcard:hover{border-color:var(--gold-dim);transform:translateY(-2px)}
.home-rcard-icon{width:42px;height:28px;flex:none;object-fit:contain;opacity:.85}
.home-rcard-text{min-width:0}
.home-rcard-num{font-size:9px;letter-spacing:.1em;color:var(--ink-faint)}
.home-rcard-title{font-size:13px;font-weight:600;color:var(--gold);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ── Research list ───────────────────────────────── */
.page-header{margin-bottom:44px}
.page-eyebrow{
  font-size:10px;letter-spacing:.15em;font-weight:600;
  color:var(--gold);
  display:flex;align-items:center;gap:8px;
  margin-bottom:14px;
}
.page-eyebrow::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--gold);flex:none}
.page-title{font-size:clamp(26px,3vw,38px);font-weight:600;color:var(--gold);margin-bottom:12px}
.page-desc{font-size:14px;color:var(--ink-dim);max-width:560px}

.research-list{display:grid;gap:16px}
.rlist-item{
  display:grid;
  grid-template-columns:56px 1fr auto;
  gap:20px;
  align-items:center;
  padding:22px 26px;
  background:var(--panel);
  border:1px solid var(--line-soft);
  border-radius:var(--radius);
  transition:border-color .15s,transform .15s;
}
.rlist-item:hover{border-color:var(--gold-dim);transform:translateX(3px)}
.rlist-num{
  font-size:22px;font-weight:300;
  color:var(--ink-faint);
  line-height:1;
}
.rlist-body{min-width:0}
.rlist-title{font-size:17px;font-weight:600;color:var(--gold);margin-bottom:6px;white-space:normal;word-break:keep-all}
.rlist-summary{font-size:13px;color:var(--ink-dim);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rlist-status{
  font-size:10px;font-weight:600;letter-spacing:.06em;
  padding:4px 12px;border-radius:99px;
  border:1px solid var(--line);
  color:var(--ink-dim);
  white-space:nowrap;
}
.rlist-arrow{
  font-size:18px;color:var(--ink-faint);
  transition:transform .15s,color .15s;
}
.rlist-item:hover .rlist-arrow{color:var(--gold);transform:translateX(3px)}

/* ── Research item page ──────────────────────────── */
.item-header{margin-bottom:40px}
.item-eyebrow{
  font-size:10px;letter-spacing:.15em;font-weight:600;
  color:var(--ink-faint);
  display:flex;align-items:center;gap:8px;
  margin-bottom:12px;
}
.item-eyebrow .item-back{
  font-size:10px;letter-spacing:.1em;
  color:var(--ink-dim);
  display:inline-flex;align-items:center;gap:5px;
  padding:4px 12px;
  border:1px solid var(--line);
  border-radius:99px;
  transition:all .15s;
}
.item-eyebrow .item-back:hover{color:var(--gold);border-color:var(--gold-dim)}
.item-title{font-size:clamp(24px,3vw,36px);font-weight:600;color:var(--gold);margin-bottom:16px;white-space:normal;word-break:keep-all}
.item-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.item-status{
  font-size:11px;font-weight:600;
  padding:5px 16px;border-radius:99px;
  border:1px solid var(--line);
  color:var(--ink-dim);
}
.item-summary{font-size:15px;color:var(--ink-dim);line-height:1.8;margin-bottom:36px;max-width:640px}
.item-details{display:grid;gap:14px;margin-bottom:36px}
.item-detail{
  display:flex;gap:14px;align-items:flex-start;
  padding:16px 20px;
  background:var(--panel);
  border:1px solid var(--line-soft);
  border-radius:var(--radius);
}
.item-detail-marker{
  width:5px;height:5px;border-radius:50%;
  background:var(--gold);
  flex:none;
  margin-top:10px;
}
.item-detail-text{font-size:14px;color:var(--ink);line-height:1.75}
.item-links{margin-bottom:36px}
.item-links-label{font-size:11px;letter-spacing:.1em;font-weight:600;color:var(--ink-faint);margin-bottom:12px}
.item-links-list{display:flex;gap:10px;flex-wrap:wrap}
.item-link{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;
  padding:9px 18px;
  border:1px solid var(--line);
  border-radius:8px;
  color:var(--ink-dim);
  transition:all .15s;
}
.item-link:hover{color:var(--gold);border-color:var(--gold-dim);background:#d4a84b0d}
.item-link-arrow{font-size:14px}
.item-nav{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.item-nav-back{
  font-size:13px;font-weight:600;
  color:var(--ink-dim);
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 18px;
  border:1px solid var(--line);
  border-radius:8px;
  transition:all .15s;
}
.item-nav-back:hover{color:var(--gold);border-color:var(--gold-dim)}

/* ── Resources ───────────────────────────────────── */
.resources-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,350px));gap:16px}
.res-card{
  padding:22px 24px;
  background:var(--panel);
  border:1px solid var(--line-soft);
  border-radius:var(--radius);
  display:flex;flex-direction:column;gap:12px;
  transition:border-color .15s;
  min-width:0;
  max-width:100%;
}
.res-card:hover{border-color:var(--gold-dim)}
.res-card-icon{width:48px;height:32px;object-fit:contain;opacity:.85}
.res-card-title{font-size:15px;font-weight:600;color:var(--gold);white-space:normal;word-break:keep-all;min-width:0;max-width:100%}
.res-card-summary{font-size:13px;color:var(--ink-dim);line-height:1.7;flex:1;min-width:0;max-width:100%;white-space:normal;word-break:keep-all}
.res-card-link{
  font-size:12px;font-weight:600;
  color:var(--ink-dim);
  display:inline-flex;align-items:center;gap:5px;
  transition:color .15s;
}
.res-card-link:hover{color:var(--gold)}
.res-card-link span{font-size:14px}

/* ── QA ──────────────────────────────────────────── */
.qa-intro{
  padding:24px 28px;
  background:var(--panel);
  border:1px solid var(--line-soft);
  border-left:3px solid var(--gold);
  border-radius:var(--radius);
  margin-bottom:40px;
  font-size:14px;
  color:var(--ink-dim);
  line-height:1.8;
}
.qa-intro strong{color:var(--gold);font-weight:600}
.qa-list{display:grid;gap:12px}
.qa-item{
  padding:20px 24px;
  background:var(--panel);
  border:1px solid var(--line-soft);
  border-radius:var(--radius);
}
.qa-q{
  font-size:14px;font-weight:600;
  color:var(--gold-bright);
  margin-bottom:10px;
  display:flex;gap:10px;align-items:flex-start;
}
.qa-q-marker{
  font-size:11px;font-weight:700;
  color:var(--gold);
  background:#d4a84b18;
  padding:2px 8px;border-radius:5px;
  flex:none;
  line-height:1.6;
}
.qa-a{font-size:14px;color:var(--ink);line-height:1.8}

/* ── 404 / empty ─────────────────────────────────── */
.empty-state{
  text-align:center;
  padding:80px 20px;
}
.empty-state-icon{font-size:48px;margin-bottom:20px;opacity:.4}
.empty-state-title{font-size:22px;font-weight:600;color:var(--gold);margin-bottom:12px;white-space:normal;word-break:keep-all}
.empty-state-desc{font-size:14px;color:var(--ink-dim);margin-bottom:28px}
.empty-state .btn{margin:0 auto}

/* ── Footer ──────────────────────────────────────── */
.ptl-footer{
  display:flex;align-items:center;gap:20px;flex-wrap:wrap;
  padding:24px max(4vw,calc((100vw - var(--max))/2));
  border-top:1px solid var(--line-soft);
  font-size:11px;color:var(--ink-faint);
}
.ptl-footer-brand{font-weight:700;color:var(--ink-dim)}
.ptl-footer-brand small{font-size:9px;letter-spacing:.1em;margin-left:8px;font-weight:400}
.ptl-footer-year{margin-left:auto}

/* ── Mobile ──────────────────────────────────────── */
@media(max-width:700px){
  .ptl-header{min-height:0;padding:14px 5vw;gap:12px}
  .ptl-brand-text{font-size:15px}
  .ptl-header-right{width:100%;justify-content:space-between;gap:10px;flex-wrap:wrap;min-width:0;max-width:100%}
  .ptl-nav{gap:16px;font-size:12px;flex-wrap:wrap;min-width:0;max-width:100%}
  .ptl-lang{gap:2px}
  .ptl-lang button{padding:4px 10px;font-size:10px}
  .ptl-main{padding:36px 5vw 60px}
  .home-hero{grid-template-columns:1fr;gap:32px;min-height:0}
  .home-hero-copy{padding-right:0}
  .home-title{font-size:clamp(26px,7vw,36px)}
  .home-hero-art img{max-width:320px}
  .home-research-cards{grid-template-columns:minmax(0,1fr)}
  .rlist-item{grid-template-columns:1fr;gap:12px;padding:18px 20px}
  .rlist-num{font-size:16px}
  .rlist-summary{-webkit-line-clamp:1}
  .rlist-status{justify-self:start}
  .rlist-arrow{display:none}
  .item-title{font-size:24px}
  .resources-grid{grid-template-columns:minmax(0,1fr)}
  .ptl-footer{flex-direction:column;align-items:flex-start;gap:8px;padding:20px 5vw}
  .ptl-footer-year{margin-left:0}
}

@media(max-width:480px){
  .home-actions{flex-direction:column;width:100%}
  .home-actions .btn{width:100%;min-height:44px}
}

@media(prefers-reduced-motion:reduce){
  *{transition:none!important}
  html{scroll-behavior:auto}
}