:root{
    --void:#070A1E; --void2:#111838; --void3:#1B2350;
    --paper:#070A1C; --paper2:#0D1230; --card:#12173A;
    --ink:#EEF0FA; --ink2:#B4BAD9; --muted:#8188BE; --line:rgba(255,255,255,.10);
    --mars:#3AA6CC; --mars-d:#2B86A8;
    --luna:#4CC9F0; --frame:#33D6B4; --medal:#F4B740; --violet:#8A7DF2;
    --cyan:#4FD1C5; --grad:linear-gradient(120deg,#2E86C4 0%,#3BB6AC 100%);
    --sans:"Pretendard Variable","Pretendard","Apple SD Gothic Neo","Malgun Gothic",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
    --mono:ui-monospace,"SF Mono","JetBrains Mono","Cascadia Code",Menlo,Consolas,monospace;
    --wrap:1180px;
    --sh1:0 1px 2px rgba(0,0,0,.3),0 12px 30px rgba(0,0,0,.28);
    --sh2:0 2px 10px rgba(0,0,0,.4),0 30px 70px rgba(0,0,0,.5);
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  html,body{overflow-x:hidden;max-width:100%}
  body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);
    font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}
  [id]{scroll-margin-top:86px}
  h1,h2,h3,h4{margin:0;line-height:1.08;letter-spacing:-.02em;text-wrap:balance;font-weight:800}
  p{margin:0}
  a{color:inherit;text-decoration:none}
  .wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px}
  .mono{font-family:var(--mono)}
  .eyebrow{font-family:var(--mono);font-size:12.5px;letter-spacing:.22em;text-transform:uppercase;
    font-weight:600;color:var(--muted)}
  .tnum{font-variant-numeric:tabular-nums}
  :focus-visible{outline:2.5px solid var(--mars);outline-offset:3px;border-radius:4px}

  /* ---------- NAV ---------- */
  header{position:fixed;inset:0 0 auto 0;z-index:60;transition:.35s ease}
  header .bar{display:flex;align-items:center;gap:26px;height:70px;
    max-width:var(--wrap);margin:0 auto;padding:0 28px}
  header.scrolled{background:rgba(11,14,39,.72);backdrop-filter:blur(18px) saturate(1.4);
    -webkit-backdrop-filter:blur(18px) saturate(1.4);box-shadow:0 1px 0 rgba(255,255,255,.06)}
  .brand{display:flex;align-items:center;gap:11px;font-weight:800;color:#fff;letter-spacing:-.02em;font-size:16px}
  .brand .glyph{width:30px;height:30px;flex:0 0 auto}
  .brand small{display:block;font-family:var(--mono);font-size:9.5px;letter-spacing:.16em;
    color:rgba(255,255,255,.55);font-weight:500;margin-top:1px}
  nav.top{display:flex;gap:4px;margin-left:auto}
  nav.top a{color:rgba(255,255,255,.82);font-size:14.5px;font-weight:600;padding:9px 14px;border-radius:9px;
    transition:.2s}
  nav.top a:hover{color:#fff;background:rgba(255,255,255,.09)}
  .navcta{display:flex;align-items:center;gap:10px}
  .lang{font-family:var(--mono);font-size:12px;color:rgba(255,255,255,.6);font-weight:600;
    padding:7px 10px;border:1px solid rgba(255,255,255,.16);border-radius:8px}
  .btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:14.5px;
    padding:11px 20px;border-radius:11px;cursor:pointer;border:0;transition:.22s;white-space:nowrap}
  .btn-mars{background:var(--grad);color:#fff;box-shadow:0 6px 20px rgba(58,160,201,.35)}
  .btn-mars:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 30px rgba(58,160,201,.5)}
  .btn-ghost{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.2)}
  .btn-ghost:hover{background:rgba(255,255,255,.16)}
  .btn-lg{padding:15px 30px;font-size:16px;border-radius:13px}
  .menutgl{display:none;padding:9px 14px;font-size:18px;line-height:1}
  header.nav-open{background:rgba(8,11,32,.95);backdrop-filter:blur(18px) saturate(1.4);
    -webkit-backdrop-filter:blur(18px) saturate(1.4)}

  /* ---------- HERO ---------- */
  .hero{position:relative;background:radial-gradient(120% 80% at 70% 0%,#1a2350 0%,var(--void) 55%);
    color:#fff;overflow:hidden;min-height:100vh;display:flex;align-items:center}
  #cosmos{position:absolute;inset:0;width:100%;height:100%;display:block}
  .hero-glow{position:absolute;inset:0;pointer-events:none;z-index:1;
    background:radial-gradient(60% 50% at 50% 118%,rgba(58,160,201,.22),transparent 70%)}
  .hero-scrim{position:absolute;inset:0;pointer-events:none;z-index:2;
    background:linear-gradient(90deg,rgba(6,9,26,.9) 0%,rgba(6,9,26,.6) 42%,rgba(6,9,26,.15) 72%,transparent 100%),
      linear-gradient(180deg,rgba(6,9,26,.5) 0%,transparent 34%,rgba(6,9,26,.6) 100%)}
  .hero .wrap{position:relative;z-index:3;width:100%;padding-top:120px;padding-bottom:80px}
  .hero-badge{display:inline-flex;align-items:center;gap:10px;padding:8px 15px;border-radius:100px;
    background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.15);
    font-family:var(--mono);font-size:12.5px;letter-spacing:.04em;color:#dfe3ff;margin-bottom:26px}
  .hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--mars);
    box-shadow:0 0 0 0 rgba(58,160,201,.6);animation:pulse 2.2s infinite}
  @keyframes pulse{0%{box-shadow:0 0 0 0 rgba(79,209,197,.55)}70%{box-shadow:0 0 0 9px rgba(79,209,197,0)}100%{box-shadow:0 0 0 0 rgba(79,209,197,0)}}
  .hero h1{font-size:clamp(40px,7vw,86px);font-weight:800;letter-spacing:-.035em;max-width:14ch}
  .hero h1 .grad{background:linear-gradient(105deg,#fff 0%,#b9c2ff 45%,var(--luna) 100%);
    -webkit-background-clip:text;background-clip:text;color:transparent}
  .hero .theme{margin-top:20px;font-size:clamp(16px,2vw,20px);color:#c3c9ee;max-width:42ch;line-height:1.55}
  .hero .theme .en{display:block;font-family:var(--mono);font-size:13.5px;letter-spacing:.02em;
    color:#8b93c6;margin-top:6px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}
  .hero-meta{display:flex;flex-wrap:wrap;gap:14px 34px;margin-top:46px;padding-top:30px;
    border-top:1px solid rgba(255,255,255,.12)}
  .hmeta{min-width:120px}
  .hmeta .k{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:#7f88bd}
  .hmeta .v{font-size:18px;font-weight:700;margin-top:5px;color:#fff}
  .hmeta .v small{font-size:12px;color:#aeb5e0;font-weight:500}
  /* countdown */
  .cd{display:flex;gap:10px;margin-top:8px}
  .cd .u{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:12px;
    padding:10px 14px;text-align:center;min-width:66px}
  .cd .n{font-family:var(--mono);font-size:26px;font-weight:700;line-height:1;color:#fff;letter-spacing:-.02em}
  .cd .l{font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:#8990c4;margin-top:6px}
  .scrollcue{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:3;
    font-family:var(--mono);font-size:10.5px;letter-spacing:.3em;color:rgba(255,255,255,.5);
    writing-mode:vertical-rl;display:flex;align-items:center;gap:10px}
  .scrollcue::after{content:"";width:1px;height:40px;background:linear-gradient(rgba(255,255,255,.5),transparent);animation:cue 2s infinite}
  @keyframes cue{0%{opacity:0;transform:scaleY(.3)}50%{opacity:1}100%{opacity:0;transform:scaleY(1)}}

  /* centered hero (ai4sci-style) + giant year */
  .hero .wrap{text-align:center}
  .hero-badge{margin:0 auto 22px}
  .hero h1{margin:0 auto;font-size:clamp(34px,5.4vw,66px)}
  .hero .theme{margin:16px auto 0}
  .hero-year{font-weight:800;letter-spacing:-.045em;line-height:.84;font-size:clamp(84px,19vw,230px);
    background:linear-gradient(180deg,rgba(79,209,197,.92),rgba(58,160,201,.22));
    -webkit-background-clip:text;background-clip:text;color:transparent;margin:2px 0 0}
  .hero-actions{justify-content:center}
  .hero-facts{display:flex;justify-content:center;flex-wrap:wrap;align-items:center;gap:12px 26px;margin-top:26px;color:#c8cef0}
  .hero-facts .f{display:inline-flex;align-items:center;gap:9px;font-size:15.5px;font-weight:600}
  .hero-facts .f svg{opacity:.85;flex:0 0 auto}
  .hero-facts .f.free{color:var(--cyan)}
  .hero-facts .sep{width:1px;height:16px;background:rgba(255,255,255,.2)}
  .hero-cdwrap{margin-top:30px}
  .hero-cdwrap .cdlbl{font-family:var(--mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:#7f88bd;margin-bottom:11px}
  .hero .cd{justify-content:center}

  /* stat pills */
  .statpills{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;max-width:920px;margin:0 auto}
  .statpills .pill{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:100px;
    background:var(--card);border:1px solid var(--line);font-weight:600;font-size:14.5px;color:var(--ink2)}
  .statpills .pill b{color:var(--cyan);font-family:var(--mono);font-weight:700}

  /* day-tabbed schedule */
  .daytabs{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-bottom:34px}
  .daytab{padding:12px 22px;border-radius:100px;border:1px solid var(--line);background:var(--card);
    color:var(--ink2);font-weight:700;font-size:14.5px;cursor:pointer;transition:.2s;font-family:inherit}
  .daytab:hover{color:var(--ink);border-color:var(--mars)}
  .daytab.on{background:var(--grad);color:#062230;border-color:transparent}
  .daypanel{display:none;max-width:880px;margin:0 auto}
  .daypanel.on{display:block;animation:fade .4s ease}
  @keyframes fade{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
  .daypanel .phead{text-align:center;margin-bottom:22px;color:var(--muted);font-family:var(--mono);font-size:13px;letter-spacing:.04em}
  .agenda{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}
  .agenda li{display:grid;grid-template-columns:132px 1fr;gap:18px;align-items:center;
    background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 22px;transition:.2s}
  .agenda li:hover{border-color:var(--mars);transform:translateX(3px)}
  .agenda .t{font-family:var(--mono);font-size:13px;font-weight:600;color:var(--cyan)}
  .agenda .e strong{font-weight:700;font-size:15.5px}
  .agenda .e span{display:block;color:var(--muted);font-size:13px;margin-top:3px}
  @media(max-width:560px){.agenda li{grid-template-columns:1fr;gap:5px}}

  /* ---------- MARQUEE ---------- */
  .ticker{background:#05081A;color:#fff;overflow:hidden;border-top:1px solid rgba(255,255,255,.08);border-bottom:1px solid rgba(255,255,255,.08)}
  .ticker .track{display:flex;gap:0;white-space:nowrap;animation:scroll 34s linear infinite;width:max-content}
  .ticker span{display:inline-flex;align-items:center;gap:18px;padding:15px 0;font-weight:700;font-size:15px}
  .ticker span::after{content:"✦";margin:0 30px;color:var(--mars);font-size:12px}
  .ticker .en{font-family:var(--mono);font-weight:500;color:#9aa0c8;font-size:13px}
  @keyframes scroll{to{transform:translateX(-50%)}}

  /* ---------- SECTIONS ---------- */
  section.block{padding:104px 0}
  .sechead{max-width:760px;margin:0 auto 56px;text-align:center}
  .sechead .eyebrow{display:flex;justify-content:center;align-items:center;gap:12px;margin-bottom:16px;color:var(--cyan)}
  .sechead .eyebrow::before{display:none}
  .sechead h2{font-size:clamp(30px,4.4vw,50px);letter-spacing:-.03em}
  .sechead p{margin-top:18px;color:var(--ink2);font-size:18px;line-height:1.7}

  /* at a glance */
  .glance{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
  .gcard{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:26px 24px;box-shadow:var(--sh1);
    position:relative;overflow:hidden;transition:.3s}
  .gcard:hover{transform:translateY(-4px);box-shadow:var(--sh2)}
  .gcard .ic{width:44px;height:44px;border-radius:13px;display:grid;place-items:center;margin-bottom:18px}
  .gcard .k{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
  .gcard .v{font-size:23px;font-weight:800;margin-top:7px;letter-spacing:-.02em}
  .gcard .s{font-size:14px;color:var(--ink2);margin-top:6px}
  .gcard .free{color:var(--frame)}

  /* events bento */
  .bento{display:grid;grid-template-columns:1.4fr 1fr 1fr;grid-auto-rows:1fr;gap:18px}
  .ev{border-radius:22px;padding:30px;color:#fff;position:relative;overflow:hidden;min-height:230px;
    display:flex;flex-direction:column;justify-content:space-between;transition:.3s;box-shadow:var(--sh1)}
  .ev:hover{transform:translateY(-5px);box-shadow:var(--sh2)}
  .ev.big{grid-row:span 2}
  .ev .num{font-family:var(--mono);font-size:13px;font-weight:700;opacity:.8;letter-spacing:.1em}
  .ev h3{font-size:26px;margin-top:auto}
  .ev .desc{margin-top:12px;font-size:14.5px;line-height:1.6;opacity:.92}
  .ev .tag{font-family:var(--mono);font-size:11.5px;letter-spacing:.08em;opacity:.85;margin-top:16px}
  .ev.e1{background:linear-gradient(150deg,#3AA0C9,#245F84);grid-column:span 1}
  .ev.e1 h3{font-size:34px}
  .ev.e2{background:linear-gradient(150deg,#2E3B8F,#1B2350)}
  .ev.e3{background:linear-gradient(150deg,#2EC4A6,#14887a)}
  .ev.e4{background:linear-gradient(150deg,#4CC9F0,#2f8fd6)}
  .ev .orb{position:absolute;border-radius:50%;filter:blur(2px);opacity:.35}

  /* categories scroller */
  .catscroll{overflow-x:auto;overflow-y:hidden;padding:6px 0 22px;margin:0 -28px;scroll-snap-type:x proximity}
  .catrow{display:flex;gap:18px;padding:0 28px;width:max-content}
  .cat{scroll-snap-align:start;width:270px;flex:0 0 auto;background:var(--card);border:1px solid var(--line);
    border-radius:20px;padding:24px;box-shadow:var(--sh1);transition:.3s;border-top:4px solid var(--c)}
  .cat:hover{transform:translateY(-5px);box-shadow:var(--sh2)}
  .cat .code{font-family:var(--mono);font-size:12px;font-weight:700;color:var(--c);letter-spacing:.06em}
  .cat h4{font-size:20px;margin-top:12px;letter-spacing:-.02em}
  .cat .age{display:inline-block;font-family:var(--mono);font-size:11px;color:var(--ink2);
    background:var(--paper);border:1px solid var(--line);padding:4px 10px;border-radius:100px;margin-top:14px}
  .cat .th{margin-top:14px;font-size:14.5px;color:var(--ink2);line-height:1.55}
  .scrollhint{font-family:var(--mono);font-size:12px;color:var(--muted);letter-spacing:.06em;
    margin-top:6px;display:flex;align-items:center;gap:8px}

  /* schedule timeline */
  .sched{display:grid;grid-template-columns:1fr 1fr;gap:40px}
  .day{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:32px;box-shadow:var(--sh1)}
  .day .dh{display:flex;align-items:baseline;gap:14px;padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:8px}
  .day .dh .d{font-family:var(--mono);font-size:34px;font-weight:800;letter-spacing:-.02em;color:var(--mars)}
  .day .dh .dl{font-size:15px;font-weight:700}
  .day .dh .dl small{display:block;color:var(--muted);font-weight:500;font-family:var(--mono);font-size:11.5px;margin-top:3px}
  .tl{list-style:none;padding:0;margin:0}
  .tl li{display:grid;grid-template-columns:78px 1fr;gap:16px;padding:14px 0;border-bottom:1px dashed var(--line)}
  .tl li:last-child{border-bottom:0}
  .tl .t{font-family:var(--mono);font-size:13px;font-weight:600;color:var(--ink2);padding-top:1px}
  .tl .e strong{font-weight:700;font-size:15.5px}
  .tl .e span{display:block;color:var(--muted);font-size:13px;margin-top:2px}
  /* process rail */
  .procrail{margin-top:40px;display:grid;grid-template-columns:repeat(5,1fr);gap:0;
    background:var(--card);border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--sh1)}
  .proc{padding:22px 20px;border-right:1px solid var(--line);position:relative}
  .proc:last-child{border-right:0}
  .proc.hot{background:linear-gradient(180deg,rgba(58,160,201,.16),rgba(58,160,201,.05))}
  .proc .p{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
  .proc .dt{font-family:var(--mono);font-size:16px;font-weight:700;margin-top:8px;letter-spacing:-.01em}
  .proc .lb{font-size:13.5px;color:var(--ink2);margin-top:5px}
  .proc.hot .dt{color:var(--mars)}

  /* awards */
  .awards{background:linear-gradient(180deg,#141B45,#0C1130);color:#fff;border-radius:32px;padding:56px;
    border:1px solid var(--line);position:relative;overflow:hidden}
  .awards .sechead h2{color:#fff}
  .awards .sechead p{color:#b9c0e6}
  .aladder{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:8px}
  .aw{background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.12);border-radius:18px;padding:24px;
    transition:.3s}
  .aw:hover{background:rgba(255,255,255,.08);transform:translateY(-3px)}
  .aw .rank{display:flex;align-items:center;gap:11px}
  .aw .medal{width:16px;height:16px;border-radius:50%;box-shadow:0 0 12px var(--g)}
  .aw h4{font-size:21px;color:#fff}
  .aw .org{font-family:var(--mono);font-size:12px;color:#aab1de;margin-top:12px;line-height:1.5}
  .aw .cnt{font-family:var(--mono);font-size:12.5px;color:var(--medal);margin-top:12px;font-weight:600}
  .astat{display:flex;flex-wrap:wrap;gap:34px;margin-top:36px;padding-top:30px;border-top:1px solid rgba(255,255,255,.12)}
  .astat .n{font-size:34px;font-weight:800;color:#fff;letter-spacing:-.02em}
  .astat .n .u{font-size:15px;color:var(--medal);font-weight:600}
  .astat .l{font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:#9aa1cd;margin-top:4px}

  /* apply */
  .applywrap{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:start}
  .steps{display:flex;flex-direction:column;gap:16px}
  .step{display:grid;grid-template-columns:52px 1fr;gap:20px;align-items:start;
    background:var(--card);border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:var(--sh1);transition:.25s}
  .step:hover{border-color:var(--mars);transform:translateX(4px)}
  .step .no{width:52px;height:52px;border-radius:14px;background:var(--void);color:#fff;
    display:grid;place-items:center;font-family:var(--mono);font-size:20px;font-weight:700}
  .step h4{font-size:18px}
  .step p{font-size:14.5px;color:var(--ink2);margin-top:7px}
  .applybox{background:linear-gradient(180deg,#141B45,#0C1130);color:#fff;border-radius:24px;padding:38px;
    border:1px solid var(--line);position:relative;overflow:hidden}
  .applybox h3{font-size:24px;color:#fff}
  .reqs{list-style:none;padding:0;margin:22px 0 0}
  .reqs li{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.1);font-size:15px;color:#d4d9f5}
  .reqs li:last-child{border-bottom:0}
  .reqs .ck{color:var(--frame);flex:0 0 auto}
  .deadline{background:rgba(58,160,201,.14);border:1px solid rgba(58,160,201,.35);border-radius:14px;
    padding:18px 20px;margin-top:24px;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
  .deadline .k{font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:#a9dcea}
  .deadline .v{font-size:22px;font-weight:800;color:#fff;font-family:var(--mono)}
  .scorepill{display:inline-flex;gap:8px;align-items:center;font-family:var(--mono);font-size:12.5px;
    background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);padding:7px 13px;border-radius:100px;margin-top:22px;color:#cfd4f2}

  /* society pillars */
  .pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
  .pillar{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:32px;box-shadow:var(--sh1);
    transition:.3s;position:relative;overflow:hidden}
  .pillar:hover{transform:translateY(-5px);box-shadow:var(--sh2)}
  .pillar .tag{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--mars);font-weight:600}
  .pillar h3{font-size:23px;margin-top:14px}
  .pillar p{font-size:14.5px;color:var(--ink2);margin-top:12px;line-height:1.65}
  .plink{display:flex;flex-direction:column;gap:2px;margin-top:20px}
  .plink a{display:flex;align-items:center;justify-content:space-between;padding:11px 0;
    border-top:1px solid var(--line);font-size:14.5px;font-weight:600;transition:.2s;color:var(--ink)}
  .plink a:hover{color:var(--mars);padding-left:6px}
  .plink a .ar{font-family:var(--mono);color:var(--muted);transition:.2s}
  .plink a:hover .ar{color:var(--mars);transform:translateX(3px)}

  /* cta band */
  .ctaband{background:linear-gradient(120deg,#3AA0C9,#245F84);color:#fff;border-radius:32px;
    padding:64px 56px;text-align:center;position:relative;overflow:hidden}
  .ctaband h2{font-size:clamp(30px,4.5vw,52px);color:#fff;letter-spacing:-.03em}
  .ctaband p{margin-top:16px;font-size:18px;color:rgba(255,255,255,.92);max-width:44ch;margin-left:auto;margin-right:auto}
  .ctaband .btn-mars{background:#fff;color:var(--mars-d);box-shadow:0 10px 30px rgba(0,0,0,.2)}
  .ctaband .btn-mars:hover{background:#fff;transform:translateY(-2px)}
  .ctaband .btn-ghost{border-color:rgba(255,255,255,.5)}
  .ctaband .actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:34px}

  /* footer */
  footer{background:var(--void);color:#fff;padding:72px 0 40px;margin-top:104px}
  .fgrid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
  .fbrand .brand{margin-bottom:18px}
  .fbrand p{color:#9aa1cd;font-size:14.5px;line-height:1.7;max-width:34ch}
  .faddr{font-family:var(--mono);font-size:12.5px;color:#7f87bb;margin-top:18px;line-height:1.8}
  .fcol h5{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:#8990c4;margin:0 0 16px}
  .fcol a{display:block;color:#c3c8ea;font-size:14.5px;padding:6px 0;transition:.2s}
  .fcol a:hover{color:#fff}
  .fbot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;margin-top:52px;padding-top:26px;
    border-top:1px solid rgba(255,255,255,.1);font-family:var(--mono);font-size:12px;color:#767eab}

  /* video */
  .videowrap{position:relative;max-width:960px;margin:0 auto;aspect-ratio:16/9;border-radius:22px;
    overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh2);background:#000}
  .videowrap iframe{position:absolute;inset:0;width:100%;height:100%;border:0}

  /* reveal */
  .rv{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
  .rv.in{opacity:1;transform:none}

  @media(max-width:960px){
    .glance{grid-template-columns:repeat(2,1fr)}
    .bento{grid-template-columns:1fr 1fr}
    .ev.big{grid-row:auto}
    .sched{grid-template-columns:1fr}
    .procrail{grid-template-columns:1fr 1fr}
    .proc:nth-child(2n){border-right:0}
    .awards{padding:38px 26px}
    .aladder{grid-template-columns:1fr}
    .applywrap{grid-template-columns:1fr;gap:34px}
    .pillars{grid-template-columns:1fr}
    .fgrid{grid-template-columns:1fr 1fr}
  }
  @media(max-width:720px){
    .navcta .lang{display:none}
    .menutgl{display:inline-flex}
    nav.top{display:none;position:absolute;top:70px;left:0;right:0;flex-direction:column;
      margin-left:0;gap:2px;padding:12px 18px 20px;background:rgba(8,11,32,.97);
      backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
      border-top:1px solid rgba(255,255,255,.08);box-shadow:0 24px 46px rgba(0,0,0,.5)}
    header.nav-open nav.top{display:flex}
    nav.top a{font-size:16px;padding:14px 14px;border-radius:11px}
    .wrap{padding:0 18px}
    section.block{padding:64px 0}
    .sechead{margin-bottom:38px}
    .sechead h2{font-size:clamp(26px,7.2vw,34px)}
    .sechead p{font-size:16px}
    .glance{grid-template-columns:1fr 1fr;gap:12px}
    .gcard{padding:20px 18px}
    .gcard .v{font-size:20px}
    .bento{grid-template-columns:1fr}
    .ev,.ev.e4{grid-column:auto!important}
    .catscroll{margin:0 -18px}
    .catrow{padding:0 18px}
    .cat{width:230px}
    .day{padding:24px 20px}
    .tl li{grid-template-columns:66px 1fr;gap:12px}
    .awards{padding:32px 20px;border-radius:22px}
    .aladder{grid-template-columns:1fr}
    .astat{gap:22px 28px}
    .applybox{padding:28px 22px}
    .procrail{grid-template-columns:1fr}
    .proc{border-right:0;border-bottom:1px solid var(--line)}
    .proc:last-child{border-bottom:0}
    .pillar{padding:26px 22px}
    .fgrid{grid-template-columns:1fr}
    .ctaband{padding:44px 22px}
    .fbot{flex-direction:column;gap:8px}
  }
  @media(max-width:560px){ .brand small{display:none} .brand{font-size:15px} }
  @media(prefers-reduced-motion:reduce){
    *{animation:none!important;scroll-behavior:auto!important}
    .rv{opacity:1;transform:none}
  }

  /* ---------- i18n language toggle ---------- */
  html[lang="ko"] .t-en{display:none}
  html[lang="en"] .t-ko{display:none}
  .langsw{display:inline-flex;border:1px solid rgba(255,255,255,.18);border-radius:9px;overflow:hidden;font-family:var(--mono)}
  .langsw button{background:transparent;color:rgba(255,255,255,.6);font-family:inherit;font-size:12px;font-weight:700;letter-spacing:.04em;padding:7px 11px;border:0;cursor:pointer;transition:.2s}
  .langsw button+button{border-left:1px solid rgba(255,255,255,.18)}
  .langsw button:hover{color:#fff}
  html[lang="ko"] .langsw .ls-ko,html[lang="en"] .langsw .ls-en{background:var(--grad);color:#062230}
  @media(max-width:400px){.langsw button{padding:6px 8px}}

/* ============================================================
   MULTI-PAGE ADDITIONS — dropdown nav, interior pages, tables
   ============================================================ */

/* ---- dropdown nav (desktop) ---- */
nav.top{gap:2px}
nav.top .has-sub{position:relative}
nav.top .navlink{display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.82);font-size:14.5px;font-weight:600;padding:9px 13px;border-radius:9px;transition:.2s;cursor:pointer;background:none;border:0;font-family:inherit}
nav.top .navlink:hover,nav.top .has-sub:hover>.navlink,nav.top .has-sub:focus-within>.navlink{color:#fff;background:rgba(255,255,255,.09)}
nav.top .navlink .caret{font-size:9px;opacity:.7;transition:.25s}
nav.top .has-sub:hover>.navlink .caret{transform:rotate(180deg)}
.sub{position:absolute;top:calc(100% + 10px);left:0;min-width:238px;background:rgba(13,18,48,.97);backdrop-filter:blur(18px) saturate(1.4);-webkit-backdrop-filter:blur(18px) saturate(1.4);border:1px solid var(--line);border-radius:14px;padding:8px;box-shadow:var(--sh2);opacity:0;visibility:hidden;transform:translateY(8px);transition:.22s;z-index:80}
.has-sub:hover .sub,.has-sub:focus-within .sub{opacity:1;visibility:visible;transform:none}
.sub::before{content:"";position:absolute;top:-12px;left:0;right:0;height:12px}
.sub a{display:block;color:var(--ink2);font-size:14px;font-weight:600;padding:10px 13px;border-radius:9px;transition:.15s;white-space:nowrap}
.sub a:hover{background:rgba(255,255,255,.08);color:#fff;padding-left:17px}
.sub a.cur{color:var(--cyan)}
.sub a small{display:block;font-family:var(--mono);font-size:10.5px;color:var(--muted);font-weight:500;margin-top:2px}

/* ---- mobile nav drawer + accordion (<=900px) ---- */
@media(max-width:900px){
  .menutgl{display:inline-flex}
  nav.top{display:none;position:absolute;top:70px;left:0;right:0;flex-direction:column;margin-left:0;gap:2px;padding:12px 16px 22px;background:rgba(8,11,32,.98);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-top:1px solid rgba(255,255,255,.08);box-shadow:0 24px 46px rgba(0,0,0,.55);max-height:calc(100vh - 70px);overflow-y:auto}
  header.nav-open nav.top{display:flex}
  nav.top .has-sub{position:static}
  nav.top .navlink{font-size:16px;padding:14px 12px;justify-content:space-between;border-radius:11px;width:100%}
  .sub{position:static;opacity:1;visibility:visible;transform:none;display:none;box-shadow:none;background:rgba(255,255,255,.035);margin:2px 0 6px;backdrop-filter:none;-webkit-backdrop-filter:none;border-color:rgba(255,255,255,.08)}
  .has-sub.open>.sub{display:block}
  .has-sub.open>.navlink .caret{transform:rotate(180deg)}
  .sub a{font-size:15px;padding:12px 14px;white-space:normal}
}

/* ---- interior page hero ---- */
.page-hero{position:relative;padding:126px 0 46px;background:radial-gradient(120% 90% at 82% -10%,#18214c 0%,var(--void) 60%);border-bottom:1px solid var(--line);overflow:hidden}
.page-hero .wrap{position:relative;z-index:2}
.crumbs{font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--muted);margin-bottom:14px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--cyan)}
.crumbs .sepc{opacity:.45}
.page-hero h1{font-size:clamp(29px,5vw,48px);letter-spacing:-.03em}
.page-hero .lead{margin-top:16px;color:var(--ink2);font-size:18px;line-height:1.7;max-width:64ch}

/* ---- generic content ---- */
section.page{padding:60px 0}
.prose{max-width:840px}
.prose h2{font-size:clamp(23px,3.4vw,32px);letter-spacing:-.02em;margin:46px 0 16px}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:19px;margin:30px 0 10px}
.prose p{color:var(--ink2);font-size:16.5px;line-height:1.85;margin:0 0 16px}
.prose ul,.prose ol{color:var(--ink2);font-size:16.5px;line-height:1.8;margin:0 0 18px;padding-left:22px}
.prose li{margin:6px 0}
.prose strong{color:var(--ink)}
.prose a.inline{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}
.card-soft{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:26px 28px;box-shadow:var(--sh1)}
.infogrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px;margin:20px 0}
.infoitem{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 20px}
.infoitem .k{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.infoitem .v{font-size:17px;font-weight:700;margin-top:6px;color:var(--ink)}

/* ---- data tables ---- */
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px;margin:20px 0}
table.dt{width:100%;border-collapse:collapse;font-size:14.5px;min-width:560px}
table.dt th,table.dt td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--line);vertical-align:top}
table.dt th{background:var(--paper2);font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--ink2);font-weight:700}
table.dt tr:last-child td{border-bottom:0}
table.dt td{color:var(--ink2)}
table.dt td b{color:var(--ink)}

/* ---- notice / coming soon ---- */
.notice{background:linear-gradient(180deg,rgba(58,160,201,.12),rgba(58,160,201,.04));border:1px solid rgba(58,160,201,.3);border-radius:18px;padding:38px 32px;text-align:center;max-width:680px;margin:0 auto}
.notice .ic{font-size:30px}
.notice h3{font-size:22px;margin-top:8px}
.notice p{color:var(--ink2);margin-top:10px;line-height:1.7}

/* ---- download button + guide CTA ---- */
.dlbtn{display:inline-flex;align-items:center;gap:13px;background:var(--grad);color:#fff;font-weight:700;padding:16px 26px;border-radius:14px;box-shadow:0 10px 30px rgba(58,160,201,.35);transition:.22s;font-size:16px}
.dlbtn:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(58,160,201,.5)}
.dlbtn .fsz{font-family:var(--mono);font-size:12px;opacity:.85;font-weight:600}
.guidecta{display:grid;grid-template-columns:1.3fr .7fr;gap:34px;align-items:center;background:linear-gradient(120deg,#141B45,#0C1130);border:1px solid var(--line);border-radius:28px;padding:44px 48px;position:relative;overflow:hidden}
.guidecta h2{font-size:clamp(24px,3.4vw,34px);color:#fff;letter-spacing:-.02em}
.guidecta p{color:#c3c9ee;margin-top:12px;font-size:16.5px;line-height:1.7}
.guidecta .actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
@media(max-width:820px){.guidecta{grid-template-columns:1fr;padding:32px 24px}}

/* ---- legal footer ---- */
.flegal{margin-top:24px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);font-size:12.5px;line-height:1.95;color:#8890c0}
.flegal .biz{color:#aab1de}
.flegal b{color:#c3c8ea;font-weight:700}
.flegal a{color:#8890c0}
.flegal a:hover{color:#fff}

/* ---- home-page fixes carried over from the single-page version ---- */
.hero h1{font-size:clamp(27px,6vw,66px)}
.hero h1 .t-ko{white-space:nowrap}
.brand{flex:0 0 auto}
.brand>span{white-space:nowrap}
@media(max-width:560px){ .navcta .btn-mars{display:none} }

/* ============================================================
   AI4SCI-STYLE LAYOUT — centered nav, light body sections,
   organizers, venue map (added for homepage restructure)
   ============================================================ */

/* centered top menu (brand left · menu centered · CTA right) */
@media(min-width:901px){ nav.top{margin:0 auto} }

/* --- light body sections: override design tokens so every existing
       component (.gcard/.pillar/.cat/.daytab/.agenda/.step/.prose/.dt…)
       adapts. Applied to homepage `.block.lite` sections AND every
       interior page's `section.page` body. --- */
section.block.lite,
section.page{
  --paper:#eef2f7; --paper2:#e5ebf3; --card:#ffffff;
  --ink:#141a3a; --ink2:#4c5678; --muted:#828bad; --line:rgba(20,26,58,.11);
  --sh1:0 1px 2px rgba(20,30,70,.05),0 10px 26px rgba(20,30,70,.07);
  --sh2:0 2px 10px rgba(20,30,70,.09),0 26px 60px rgba(20,30,70,.13);
  background:var(--paper); color:var(--ink);
  border-top:1px solid rgba(20,26,58,.06);
}
section.block.lite .sechead .eyebrow{color:var(--mars-d)}
section.block.lite .cat .age{background:#eef2f7}
section.block.lite .scrollhint{color:var(--muted)}
/* interior light pages: keep inline links & table headers legible */
section.page .prose a.inline{color:var(--mars-d)}
section.page table.dt th{background:#e5ebf3;color:var(--ink2)}

/* --- organizers / sponsors --- */
.orgroles{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.orole{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:28px 26px;box-shadow:var(--sh1);transition:.3s}
.orole:hover{transform:translateY(-4px);box-shadow:var(--sh2)}
.orole .rk{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--mars-d);font-weight:600}
.orole h4{font-size:19px;margin-top:11px;letter-spacing:-.02em}
.orole p{font-size:14.5px;color:var(--ink2);margin-top:9px;line-height:1.6}
.orgchips-h{text-align:center;font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:44px 0 16px}
.orgchips{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;max-width:920px;margin:0 auto}
.orgchips span{background:var(--card);border:1px solid var(--line);border-radius:100px;padding:9px 18px;font-size:14px;font-weight:600;color:var(--ink2);box-shadow:var(--sh1)}

/* --- keynote speakers (ai4sci-style photo cards) --- */
.speakers{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.spk{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:32px 24px;text-align:center;box-shadow:var(--sh1);transition:.3s}
.spk:hover{transform:translateY(-4px);box-shadow:var(--sh2)}
.spk .av{width:98px;height:98px;border-radius:50%;margin:0 auto 18px;display:grid;place-items:center;
  background:linear-gradient(160deg,rgba(58,166,204,.16),rgba(51,214,180,.12));border:1px solid var(--line);color:var(--mars)}
.spk .av img{width:100%;height:100%;border-radius:50%;object-fit:cover}
.spk .nm{font-size:18px;font-weight:800;letter-spacing:-.01em}
.spk .ro{font-family:var(--mono);font-size:12.5px;font-weight:700;color:var(--mars-d);margin-top:7px;letter-spacing:.02em}
.spk .af{font-size:13.5px;color:var(--ink2);margin-top:6px}
.spk .tg{display:inline-block;margin-top:15px;font-family:var(--mono);font-size:11.5px;color:var(--ink2);
  background:var(--paper);border:1px solid var(--line);padding:6px 13px;border-radius:100px}
.spk .bio{font-size:13.5px;color:var(--ink2);line-height:1.65;margin-top:16px;padding-top:16px;
  border-top:1px solid var(--line);text-align:left}
@media(max-width:820px){.speakers{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.speakers{grid-template-columns:1fr}}

/* --- featured keynote speaker (single) --- */
.spkfeature{display:grid;grid-template-columns:.82fr 1.18fr;gap:46px;align-items:center}
.spkfeature .portrait{border-radius:24px;overflow:hidden;box-shadow:var(--sh2);border:1px solid var(--line);background:var(--card)}
.spkfeature .portrait img{width:100%;height:auto;display:block}
.spkfeature .role{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--mars-d);letter-spacing:.05em;text-transform:uppercase}
.spkfeature h2{font-size:clamp(30px,4vw,46px);margin-top:12px;letter-spacing:-.02em}
.spkfeature .aff{font-size:17px;color:var(--ink2);margin-top:14px;line-height:1.65}
.spktags{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}
.spktags span{font-family:var(--mono);font-size:12px;color:var(--ink2);background:var(--card);border:1px solid var(--line);padding:7px 14px;border-radius:100px}
.awardlist{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:11px}
.awardlist li{display:flex;gap:13px;align-items:flex-start;font-size:15.5px;color:var(--ink2);line-height:1.5}
.awardlist li b{color:var(--ink);font-weight:700}
.awardlist .yr{font-family:var(--mono);font-size:12px;font-weight:700;color:var(--mars-d);background:var(--paper2);border:1px solid var(--line);padding:4px 10px;border-radius:8px;flex:0 0 auto;margin-top:1px}
.spkgallery{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.spkgallery figure{margin:0;border-radius:18px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh1);background:var(--card)}
.spkgallery img{width:100%;height:auto;display:block;aspect-ratio:1/1;object-fit:cover}
.spkgallery figcaption{font-size:13px;color:var(--ink2);padding:13px 16px;line-height:1.5}
@media(max-width:820px){.spkfeature{grid-template-columns:1fr;gap:30px}.spkfeature .portrait{max-width:430px;margin:0 auto}}
@media(max-width:560px){.spkgallery{grid-template-columns:1fr}}

/* --- venue: map + transit --- */
.venuewrap{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:stretch}
.venuemap{border-radius:22px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh1);min-height:380px;background:var(--card)}
.venuemap iframe{width:100%;height:100%;min-height:380px;border:0;display:block}
.venueinfo{display:flex;flex-direction:column}
.vrow{display:flex;gap:16px;padding:18px 2px;border-bottom:1px solid var(--line)}
.vrow:last-child{border-bottom:0}
.vrow .vic{width:42px;height:42px;flex:0 0 auto;border-radius:12px;display:grid;place-items:center;background:rgba(58,166,204,.12)}
.vrow .vk{font-size:15.5px;font-weight:700;letter-spacing:-.01em}
.vrow .vs{color:var(--ink2);font-size:14px;margin-top:4px;line-height:1.6}
@media(max-width:820px){ .orgroles{grid-template-columns:1fr} .venuewrap{grid-template-columns:1fr} }