:root{
  --bg:#FFFFFF;--bg-2:#FAFAFA;--panel:#F4F4F4;
  --line:#E6E6E6;--line-strong:#CFCFCF;
  --ink:#0A0A0A;--ink-2:#3A3A3A;--ink-3:#8A8A8A;
  --accent:#143CAC;--accent-2:#1F4DCE;--accent-tint:rgba(20,60,172,.08);
  --topbar-bg:rgba(255,255,255,.85);
  --grid:rgba(0,0,0,.035);
  --serif:"Instrument Serif","Noto Serif KR","Iowan Old Style","Apple Garamond",Georgia,serif;
  --mono:"JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;
  --sans:"Pretendard","Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
:root[data-theme="dark"]{
  --bg:#0B0B0D;--bg-2:#101013;--panel:#16171B;
  --line:#23242A;--line-strong:#3A3B43;
  --ink:#F2F2F2;--ink-2:#C4C4C8;--ink-3:#7E7F86;
  --accent:#7BA0FF;--accent-2:#A3BCFF;--accent-tint:rgba(123,160,255,.12);
  --topbar-bg:rgba(11,11,13,.85);
  --grid:rgba(255,255,255,.04);
}
:root[data-theme="dark"] img,:root[data-theme="dark"] iframe{filter:none}
.theme-transition,
.theme-transition *,
.theme-transition *::before,
.theme-transition *::after{
  transition: background-color .35s ease, color .35s ease, border-color .35s ease, fill .35s ease, box-shadow .35s ease !important;
}
:root[data-theme="dark"] .brand img.logo{filter:invert(1) hue-rotate(180deg)}
:root[data-theme="dark"] .news-row .badge.paper{background:#F2F2F2;color:#0A0A0A;border-color:#F2F2F2}
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:999px;border:1px solid var(--line-strong);background:transparent;color:var(--ink-2);cursor:pointer;margin-left:10px;transition:color .2s,border-color .2s,background .2s}
.theme-toggle:hover{color:var(--ink);border-color:var(--ink)}
.theme-toggle svg{width:16px;height:16px;display:block}
:root[data-theme="dark"] .theme-toggle .sun{display:block}
:root[data-theme="dark"] .theme-toggle .moon{display:none}
.theme-toggle .sun{display:none}
.theme-toggle .moon{display:block}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased;font-feature-settings:"ss01","cv11"}
body{min-height:100vh;overflow-x:hidden;}
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:0;background-image:linear-gradient(to right,var(--grid) 1px,transparent 1px),linear-gradient(to bottom,var(--grid) 1px,transparent 1px);background-size:80px 80px;mask-image:radial-gradient(ellipse 90% 70% at 50% 30%,black 30%,transparent 80%);}
.topbar{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;align-items:center;justify-content:space-between;padding:16px 36px;backdrop-filter:blur(14px);background:var(--topbar-bg);border-bottom:1px solid var(--line);}
.brand{display:flex;align-items:center;text-decoration:none;color:var(--ink)}
.brand img.logo{height:38px;width:auto;display:block}
.nav{display:flex;gap:3px;align-items:center}
.nav a{color:var(--ink-2);text-decoration:none;font-size:18px;letter-spacing:.02em;padding:11px 20px;border-radius:999px;display:inline-flex;align-items:center;gap:8px;transition:color .2s,background .2s;}
.nav a:hover{color:var(--ink);background:rgba(0,0,0,.04)}
.nav a .num{font-family:var(--mono);font-size:14px;color:var(--ink-3)}
.nav a.active{color:var(--ink)}
.nav a.active .num{color:var(--accent)}
.topbar .right{display:flex;align-items:center;gap:14px}
.pill{font-family:var(--mono);font-size:11px;color:var(--accent);border:1px solid var(--accent);padding:6px 10px;border-radius:999px;display:inline-flex;align-items:center;gap:8px;}
.pill .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px rgba(20,60,172,.15)}
.section{position:relative;z-index:2;max-width:1440px;margin:0 auto;padding:120px 36px;}
.page-head{position:relative;z-index:2;max-width:1440px;margin:0 auto;padding:140px 36px 40px;}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-3);}
.eyebrow::before{content:"";width:28px;height:1px;background:var(--accent)}
.page-title{font-family:var(--serif);font-weight:400;font-size:clamp(56px,7vw,108px);line-height:.95;letter-spacing:-.02em;margin:22px 0 0;color:var(--ink);}
.page-title em{font-style:italic;color:var(--accent)}
.page-lede{margin-top:28px;max-width:680px;font-size:17px;line-height:1.65;color:var(--ink-2);text-wrap:pretty;}
.breadcrumb{font-family:var(--mono);font-size:11px;color:var(--ink-3);letter-spacing:.16em;text-transform:uppercase;margin-bottom:24px;display:flex;gap:10px;align-items:center}
.breadcrumb a{color:var(--ink-3);text-decoration:none}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{opacity:.5}
.sec-head{display:grid;grid-template-columns:160px 1fr auto;gap:32px;align-items:end;margin-bottom:56px}
.sec-num{font-family:var(--mono);font-size:12px;color:var(--accent);letter-spacing:.2em}
.sec-title{font-family:var(--serif);font-weight:400;font-size:clamp(36px,4vw,56px);line-height:1;letter-spacing:-.015em;margin:0;color:var(--ink);}
.sec-title em{font-style:italic;color:var(--ink-3)}
.sec-aside{font-size:13px;color:var(--ink-3);max-width:280px;text-align:right;line-height:1.5}
footer{position:relative;z-index:2;border-top:1px solid var(--line);padding:60px 36px 40px;margin-top:60px}
footer .row{max-width:1440px;margin:0 auto;display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap;font-family:var(--mono);font-size:11px;color:var(--ink-3);letter-spacing:.1em}
footer .row a{color:var(--ink-2);text-decoration:none}
footer .row a:hover{color:var(--accent)}
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 22px;border-radius:8px;font-size:14px;letter-spacing:.02em;text-decoration:none;cursor:pointer;border:1px solid transparent;font-family:var(--sans);font-weight:500;transition:transform .15s,box-shadow .2s,background .2s,border-color .2s;}
.btn.primary{background:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accent-2);transform:translateY(-1px)}
.btn.ghost{color:var(--ink);border-color:var(--line-strong);background:transparent}
.btn.ghost:hover{border-color:var(--ink);background:rgba(0,0,0,.03)}
.btn .arr{display:inline-block;transition:transform .2s}
.btn:hover .arr{transform:translateX(3px)}
.tag{font-family:var(--mono);font-size:10px;color:var(--ink-3);border:1px solid var(--line-strong);padding:4px 10px;border-radius:999px;letter-spacing:.1em;text-transform:uppercase}
.news-row{display:grid;grid-template-columns:80px 100px 1fr auto;gap:24px;align-items:center;padding:22px 0;border-top:1px solid var(--line);text-decoration:none;color:var(--ink);transition:padding .25s,color .2s;}
.news-row:last-child{border-bottom:1px solid var(--line)}
.news-row:hover{padding-left:8px;color:var(--accent)}
.news-row .date{font-family:var(--mono);font-size:11px;color:var(--ink-3);letter-spacing:.1em}
.news-row .badge{font-family:var(--mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;padding:4px 10px;border-radius:4px;justify-self:start;border:1px solid var(--line-strong);color:var(--ink-2);background:transparent;}
.news-row .badge.notice{background:var(--accent-tint);color:var(--accent);border-color:rgba(20,60,172,.25)}
.news-row .badge.paper{background:#0A0A0A;color:#fff;border-color:#0A0A0A}
.news-row .badge.award{background:transparent;color:var(--ink);border-color:var(--ink)}
.news-row .title{font-size:16px;line-height:1.4}
.news-row .arr{color:var(--ink-3);font-family:var(--mono);font-size:14px}
.news-row:hover .arr{color:var(--accent)}
@media (max-width:1024px){
  .nav{display:none}
  .nav-toggle{display:inline-flex !important}
  .topbar .right .pill{display:none}
  .brand img.logo{width:180px !important;height:54px !important}
  .sec-head{grid-template-columns:1fr;gap:12px}
  .sec-aside{text-align:left;max-width:none}
}@media (max-width:600px){
  .topbar{padding:12px 18px}
  .brand img.logo{width:150px !important;height:46px !important}
  .section{padding:80px 18px}
  .page-head{padding:100px 18px 30px}
  .news-row{grid-template-columns:80px 80px 1fr;gap:14px}
  .news-row .arr{display:none}
}

/* Nav toggle (narrow screens) */
.nav-toggle{display:none;align-items:center;justify-content:center;width:38px;height:38px;border-radius:999px;border:1px solid var(--line-strong);background:transparent;color:var(--ink);cursor:pointer;padding:0}
.nav-toggle svg{width:20px;height:20px;display:block}
.nav-toggle .x{display:none}
.nav-drawer{position:fixed;inset:0;z-index:60;display:none;background:rgba(10,10,10,.45);backdrop-filter:blur(2px)}
:root[data-theme="dark"] .nav-drawer{background:rgba(0,0,0,.65)}
.nav-drawer .panel{position:absolute;top:0;right:0;height:100%;width:min(86vw,360px);background:var(--bg);border-left:1px solid var(--line);display:flex;flex-direction:column;transform:translateX(100%);transition:transform .28s ease}
:root[data-theme="dark"] .nav-drawer .panel{background:#0F1013;border-left-color:#23242A}
.nav-drawer .panel-head{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--line)}
.nav-drawer .panel-head .label{font-family:var(--mono);font-size:11px;letter-spacing:.18em;color:var(--ink-3)}
.nav-drawer .panel-head .close{width:38px;height:38px;border-radius:50%;border:1px solid var(--line-strong);background:transparent;color:var(--ink);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;font-size:18px}
.nav-drawer .panel nav{display:flex;flex-direction:column;padding:14px 0}
.nav-drawer .panel nav a{display:flex;align-items:baseline;gap:18px;padding:18px 26px;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line);font-family:var(--serif);font-style:italic;font-size:26px;line-height:1}
.nav-drawer .panel nav a .num{font-family:var(--mono);font-style:normal;font-size:11px;color:var(--ink-3);letter-spacing:.1em;min-width:24px}
.nav-drawer .panel nav a.active{color:var(--accent)}
.nav-drawer .panel nav a.active .num{color:var(--accent)}
.nav-drawer .panel-foot{margin-top:auto;padding:18px 22px;border-top:1px solid var(--line);font-family:var(--mono);font-size:11px;color:var(--ink-3);letter-spacing:.06em}
body.nav-open{overflow:hidden}
body.nav-open .nav-drawer{display:block}
body.nav-open .nav-drawer .panel{transform:translateX(0)}
body.nav-open .nav-toggle .burger{display:none}
body.nav-open .nav-toggle .x{display:block}