/* THEME: wave — 홀로그래픽 웨이브, 흐르는 밴드 + 샤인 스윕 + 대각 마키 */
:root{
  color-scheme:dark;
  --bg:#1b2338; --panel:#29324d; --ink:#f1ecff; --muted:#a7b0cc; --line:rgba(165,185,255,.16);
  --violet:#8b5cf6; --blue:#3b82f6; --cyan:#22d3ee; --pink:#ec4899; --glass:rgba(255,255,255,.07); --maxw:1080px;
  --sans:"Inter","Noto Sans KR",system-ui,-apple-system,sans-serif;
  --display:"Outfit","Noto Sans KR",system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;font-family:var(--sans);background:var(--bg);color:var(--ink);line-height:1.65;-webkit-font-smoothing:antialiased;}
a{color:inherit;text-decoration:none;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
h1,h2,h3{margin:0;font-family:var(--display);letter-spacing:-.02em;line-height:1.06;}
.kick{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:#c7b8ff;}

header{position:sticky;top:0;z-index:50;background:rgba(27,35,56,.85);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px;}
.brand{font-family:var(--display);font-weight:700;font-size:18px;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:22px;}
.nav-links a{font-size:14px;color:var(--muted);font-weight:500;}
.nav-links a:hover,.nav-links a.active{color:var(--ink);}
.nav-right{display:flex;align-items:center;gap:12px;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:linear-gradient(120deg,var(--violet),var(--pink));color:#fff;font-weight:700;font-size:15px;line-height:1;white-space:nowrap;padding:13px 26px;border-radius:999px;border:0;cursor:pointer;font-family:inherit;box-shadow:0 10px 34px -8px rgba(139,92,246,.6);transition:transform .12s,box-shadow .15s;}
.btn:hover{transform:translateY(-2px);box-shadow:0 18px 46px -10px rgba(236,72,153,.6);}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line);box-shadow:none;}
.btn.sm{padding:9px 16px;font-size:14px;}
.hamburger{display:none;background:transparent;border:0;color:var(--ink);cursor:pointer;font-size:22px;}

.hero{position:relative;overflow:hidden;min-height:90vh;display:flex;flex-direction:column;justify-content:center;padding:80px 0;}
.waves{position:absolute;inset:-20%;z-index:0;filter:blur(72px);opacity:.6;}
.waves span{position:absolute;border-radius:45%;mix-blend-mode:screen;}
.waves span:nth-child(1){width:72%;height:58%;left:-6%;top:4%;background:radial-gradient(circle,var(--violet),transparent 64%);animation:waveFlow 19s ease-in-out infinite;}
.waves span:nth-child(2){width:66%;height:56%;right:-6%;top:-2%;background:radial-gradient(circle,var(--blue),transparent 64%);animation:waveFlow 23s ease-in-out infinite reverse;}
.waves span:nth-child(3){width:78%;height:62%;left:8%;bottom:-12%;background:radial-gradient(circle,var(--pink),transparent 64%);animation:waveFlow2 27s ease-in-out infinite;}
.waves span:nth-child(4){width:56%;height:52%;right:4%;bottom:-6%;background:radial-gradient(circle,var(--cyan),transparent 64%);animation:waveFlow2 21s ease-in-out infinite reverse;}
.hero::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(105deg,transparent 45%,rgba(255,255,255,.07) 50%,transparent 55%);animation:sweep 7.5s ease-in-out infinite;pointer-events:none;}
.hero-inner{position:relative;z-index:2;text-align:center;}
.wave-title{font-size:clamp(44px,8.4vw,104px);font-weight:700;letter-spacing:-.03em;margin:18px 0 0;
  background:linear-gradient(100deg,#f1ecff,#cdbcff,#bfe0ff,#ffc7ec,#f1ecff);background-size:220% 100%;
  -webkit-background-clip:text;background-clip:text;color:transparent;animation:hueShift 13s linear infinite;}
.hero .sub{font-size:clamp(17px,2.3vw,22px);color:#d6cdef;max-width:580px;margin:22px auto 0;}
.meta{display:flex;gap:12px;justify-content:center;margin:30px 0;flex-wrap:wrap;}
.meta>div{background:var(--glass);border:1px solid var(--line);border-radius:14px;padding:12px 18px;backdrop-filter:blur(8px);}
.meta dt{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:3px;}
.meta dd{margin:0;font-family:var(--display);font-weight:600;font-size:16px;}
.hero-cta{display:flex;gap:14px;justify-content:center;align-items:center;flex-wrap:wrap;}
.link-u{font-weight:700;font-size:15px;color:#c7b8ff;}
.dmarquee{position:relative;z-index:2;margin-top:58px;width:112%;margin-left:-6%;overflow:hidden;transform:rotate(-3deg);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0;white-space:nowrap;background:rgba(255,255,255,.02);}
.dmarquee-track{display:inline-flex;animation:dscroll 26s linear infinite;}
.dmarquee-track span{font-family:var(--display);font-weight:700;font-size:18px;letter-spacing:.12em;background:linear-gradient(90deg,var(--violet),var(--blue),var(--cyan),var(--pink));-webkit-background-clip:text;background-clip:text;color:transparent;}

@keyframes waveFlow{0%,100%{transform:translate(0,0) scale(1);}50%{transform:translate(8%,4%) scale(1.15);}}
@keyframes waveFlow2{0%,100%{transform:translate(0,0) scale(1);}50%{transform:translate(-7%,-5%) scale(1.12);}}
@keyframes hueShift{to{background-position:220% 0;}}
@keyframes sweep{0%{transform:translateX(-65%);}55%,100%{transform:translateX(65%);}}
@keyframes dscroll{from{transform:translateX(0);}to{transform:translateX(-50%);}}
@media (prefers-reduced-motion:reduce){.waves span,.hero::before,.wave-title,.dmarquee-track{animation:none!important;}.wave-title{background-position:0 0;}}

section{padding:90px 0;}
.sec-head{text-align:center;margin-bottom:46px;}
.sec-no{display:none;}
.sec-title{font-size:clamp(30px,4.6vw,46px);font-weight:700;}
.sec-lead{color:var(--muted);max-width:560px;margin:12px auto 0;font-size:17px;}
.page-head{padding:72px 0 0;text-align:center;}
.page-no{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#c7b8ff;}
.page-title{font-size:clamp(36px,5.4vw,62px);font-weight:700;margin-top:10px;letter-spacing:-.02em;}
.page-lead{color:var(--muted);max-width:560px;margin:14px auto 0;font-size:17px;}
main{padding:54px 0 96px;}

.index-label{margin:8px 0 0;text-align:center;display:block;}
.index-grid{margin-top:22px;display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;}
.index-card{background:var(--glass);border:1px solid var(--line);border-radius:16px;padding:26px;display:flex;justify-content:space-between;align-items:center;backdrop-filter:blur(8px);transition:transform .15s,border-color .15s,box-shadow .15s;}
.index-card:hover{transform:translateY(-3px);border-color:var(--violet);box-shadow:0 22px 50px -24px rgba(139,92,246,.6);}
.index-card h3{font-size:19px;font-weight:700;}
.index-card .ar{color:#c7b8ff;font-weight:700;}

.agenda{display:grid;gap:12px;}
.ag-row{display:grid;grid-template-columns:100px 1fr;gap:22px;padding:20px 24px;background:var(--glass);border:1px solid var(--line);border-radius:14px;align-items:baseline;}
.ag-time{font-family:var(--display);font-weight:700;color:#c7b8ff;font-variant-numeric:tabular-nums;}
.ag-title{font-weight:600;}
.ag-desc{color:var(--muted);font-size:14px;}
/* 홈 하단 프로그램 구성표 */
.program-home{padding:96px 0;position:relative;}
.program-home .sec-head{text-align:center;margin-bottom:44px;}
.program-home .home-agenda{max-width:760px;margin:0 auto;}
.prog-more{text-align:center;margin:28px 0 0;}

.papers{display:grid;gap:14px;}
.paper{background:var(--glass);border:1px solid var(--line);border-radius:14px;padding:22px 24px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;align-items:flex-start;transition:transform .15s,border-color .15s;}
.paper:hover{transform:translateY(-2px);border-color:var(--pink);}
.paper h3{font-size:18px;font-weight:600;margin-bottom:5px;font-family:var(--sans);}
.paper .authors{color:var(--muted);font-size:14px;}
.chip{font-size:12px;font-weight:700;color:#e7d8ff;background:rgba(139,92,246,.16);border:1px solid rgba(139,92,246,.34);padding:6px 12px;border-radius:999px;white-space:nowrap;}
.note{color:var(--muted);font-size:14px;margin-top:18px;text-align:center;}

.reg-grid{display:grid;grid-template-columns:0.85fr 1.15fr;gap:28px;align-items:start;}
.reg-aside{position:sticky;top:90px;background:var(--glass);border:1px solid var(--line);border-radius:16px;overflow:hidden;backdrop-filter:blur(8px);}
.reg-img{height:170px;background:#150f26 center/cover no-repeat;background-image:url(../assets/img/wave.svg);}
.reg-aside .ix{display:none;}
.reg-aside h3{font-size:18px;font-weight:700;margin:20px 22px 8px;font-family:var(--sans);}
.reg-aside p{color:var(--muted);font-size:14px;margin:0 22px 22px;}
.form-card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:30px;}
.field{margin-bottom:20px;}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:8px;}
.field label .req{color:var(--pink);}
.field input,.field select,.field textarea{width:100%;background:var(--glass);border:1px solid var(--line);border-radius:10px;color:var(--ink);padding:12px 14px;font:inherit;font-size:15px;transition:border-color .15s,box-shadow .15s,background-color .15s;}
.field input::placeholder,.field textarea::placeholder{color:#7d72a0;}
.field select{appearance:none;-webkit-appearance:none;-moz-appearance:none;cursor:pointer;padding-right:42px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23a7b0cc' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 15px center;}
.field select:hover{border-color:rgba(165,185,255,.4);background-color:rgba(255,255,255,.1);}
.field option{background:#29324d;color:var(--ink);padding:10px;}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--violet);box-shadow:0 0 0 4px rgba(139,92,246,.2);}
.field select:focus{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23c4b5fd' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");}
.field textarea{resize:vertical;min-height:80px;}
.row-2{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.checks{display:flex;gap:14px;flex-wrap:wrap;}
.check{display:flex;align-items:center;gap:9px;font-size:15px;cursor:pointer;border:1px solid var(--line);border-radius:10px;padding:11px 16px;flex:1;min-width:140px;background:var(--glass);}
.check input{width:auto;accent-color:var(--violet);}
.check:has(:checked){border-color:var(--violet);background:rgba(139,92,246,.14);}
.form-note{font-size:13px;color:var(--muted);margin-top:8px;}
.form-msg{margin-top:16px;padding:14px 16px;border-radius:10px;font-size:14px;display:none;}
.form-msg.ok{display:block;background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.4);color:var(--cyan);}
.form-msg.err{display:block;background:rgba(236,72,153,.12);border:1px solid rgba(236,72,153,.4);color:#f7a8cf;}

.alumni-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px;}
.alum{background:var(--glass);border:1px solid var(--line);border-radius:16px;padding:22px;backdrop-filter:blur(8px);transition:transform .15s,border-color .15s;}
.alum:hover{transform:translateY(-2px);border-color:var(--violet);}
.alum .ava{width:46px;height:46px;border-radius:12px;background:linear-gradient(120deg,var(--violet),var(--pink));color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--display);font-weight:700;margin-bottom:14px;}
.alum h3{font-size:16px;font-weight:600;margin-bottom:3px;font-family:var(--sans);}
.alum .yr{font-size:13px;color:#c7b8ff;font-weight:700;}
.alum p{font-size:14px;color:var(--muted);margin:8px 0 0;}

footer{border-top:1px solid var(--line);padding:38px 0;}
.foot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:14px;color:var(--muted);}
.foot .brand{color:var(--ink);font-weight:700;}

@media (max-width:820px){.reg-grid{grid-template-columns:1fr;}.reg-aside{position:static;}.hero{min-height:auto;padding:64px 0;}}
@media (max-width:760px){
  .nav-links{display:none;position:absolute;top:70px;left:0;right:0;flex-direction:column;gap:0;background:#0c0818;border-bottom:1px solid var(--line);padding:6px 0;}
  .nav-links.open{display:flex;}
  .nav-links a{padding:12px 24px;width:100%;}
  .hamburger{display:block;}
  .row-2{grid-template-columns:1fr;}
}


/* ===== v3 component refinements ===== */
:root{--ac:#8b5cf6;--ac-on:#ffffff;--surface:rgba(255,255,255,.05);}
.lang-toggle{display:inline-flex;align-items:center;gap:2px;padding:3px 3px 3px 2px;border:1px solid var(--line);border-radius:9px;background:var(--surface);overflow:visible;}
.lang-toggle .lang-ic{color:var(--muted);margin:0 3px 0 7px;flex:none;opacity:.9;}
.lang-toggle button{background:transparent;border:0;border-radius:7px;color:var(--muted);font-weight:700;font-size:12.5px;letter-spacing:.02em;padding:5px 10px;cursor:pointer;font-family:inherit;transition:background .15s,color .15s;}
.lang-toggle button:hover{color:var(--ink);}
.lang-toggle button.active{background:var(--ac);color:var(--ac-on);}
.alumni-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px;}
.alum{display:flex;align-items:center;gap:14px;padding:18px 20px;border:1px solid var(--line);border-radius:14px;background:var(--surface);transition:border-color .15s,transform .12s;}
.alum:hover{border-color:var(--ac);transform:translateY(-2px);}
.alum .ava{width:48px;height:48px;border-radius:50%;flex:none;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;background:var(--ac);color:var(--ac-on);margin:0;box-shadow:none;border:0;font-family:inherit;}
.alum .alum-info{flex:1;min-width:0;}
.alum .alum-info h3{margin:0 0 2px;font-size:16px;font-weight:700;color:var(--ink);font-family:inherit;letter-spacing:0;}
.alum .alum-info h3::before{content:none;}
.alum .alum-role{font-size:13px;color:var(--muted);line-height:1.4;margin:0;}
.alum .alum-yr{flex:none;align-self:flex-start;font-size:11px;font-weight:700;color:var(--ac);border:1px solid var(--line);border-radius:999px;padding:3px 9px;white-space:nowrap;letter-spacing:0;text-transform:none;background:transparent;}
.quicknav .index-label{margin:0 0 16px;}
.quicknav .index-grid{margin-top:0;}
.arc-list{display:grid;gap:12px;}
.arc-card{display:flex;align-items:center;gap:20px;padding:20px 22px;border:1px solid var(--line);border-radius:14px;background:var(--surface);transition:border-color .15s,transform .12s;}
.arc-card:hover{border-color:var(--ac);transform:translateY(-2px);}
.arc-year{flex:none;font-weight:800;font-size:24px;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:-.02em;font-family:inherit;}
.arc-desc{flex:1;color:var(--muted);font-size:15px;}
.arc-go{flex:none;color:var(--ac);font-weight:700;font-size:18px;}
.foot{align-items:center;gap:16px;}
.foot-l{display:flex;flex-direction:column;gap:2px;}
.foot-tag{color:var(--muted);font-size:12px;}
.foot-r{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.foot-r a{color:var(--muted);}
.foot-r a:hover{color:var(--ink);}


/* ===== v4 dates+speakers ===== */
.dates-list{display:grid;gap:0;border-left:2px solid var(--line);margin:8px 0 0 6px;}
.date-row{position:relative;display:flex;align-items:baseline;gap:18px;padding:14px 0 14px 24px;}
.date-dot{position:absolute;left:-7px;top:18px;width:12px;height:12px;border-radius:50%;background:var(--surface);border:2px solid var(--line);}
.date-row.is-done .date-dot{background:var(--ac);border-color:var(--ac);}
.date-row.is-highlight .date-dot{background:var(--ac);border-color:var(--ac);width:14px;height:14px;left:-8px;}
.date-when{flex:none;min-width:150px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;font-family:inherit;}
.date-what{color:var(--muted);}
.date-row.is-done .date-when{opacity:.6;}
.date-row.is-highlight .date-what{color:var(--ac);font-weight:700;}
.speakers-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;}
.speaker{border:1px solid var(--line);border-radius:16px;padding:24px;background:var(--surface);transition:border-color .15s,transform .12s;}
.speaker:hover{border-color:var(--ac);transform:translateY(-2px);}
.spk-photo{width:62px;height:62px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:24px;background:var(--ac);color:var(--ac-on);margin-bottom:14px;font-family:inherit;}
.spk-role{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--ac);border:1px solid var(--line);border-radius:999px;padding:3px 10px;margin-bottom:10px;}
.speaker h3{font-size:18px;font-weight:700;color:var(--ink);margin:0 0 2px;font-family:inherit;letter-spacing:0;}
.spk-org{font-size:13px;color:var(--muted);margin-bottom:12px;}
.spk-talk{font-size:14px;color:var(--ink);border-top:1px solid var(--line);padding-top:12px;line-height:1.5;}


/* ===== v5 cfp ===== */
.cfp-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;align-items:start;}
.cfp-card{border:1px solid var(--line);border-radius:14px;padding:22px;background:var(--surface);}
.cfp-card h3{font-size:15px;font-weight:700;color:var(--ink);margin:0 0 6px;font-family:inherit;letter-spacing:0;}
.cfp-card p{font-size:14px;color:var(--muted);margin:0;line-height:1.5;}
.cfp-cta{grid-column:1/-1;justify-self:start;margin-top:6px;text-decoration:none;}
/* 논문모집 — 마감 칩 */
.cfp-dl-note{margin:16px 0 0;display:flex;flex-wrap:wrap;gap:10px;}
.dl-chip{display:inline-flex;align-items:baseline;gap:8px;padding:9px 16px;border:1px solid rgba(139,92,246,.4);border-radius:999px;background:rgba(139,92,246,.1);font-family:var(--display);font-weight:700;font-size:15px;color:#c7b8ff;}
.dl-chip-label{color:var(--muted);font-weight:500;}
.page-lead:empty{display:none;}

/* ===== v6 motion ===== */

/* scroll reveal (driven by app.js IntersectionObserver) */
.rv{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.7,.3,1);will-change:opacity,transform;}
.rv.rv-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){.rv{opacity:1!important;transform:none!important;}}


/* ===== v9 editions ===== */
.ed-meta{color:var(--muted);font-size:15px;margin-top:14px;}
.ed-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin:0 0 10px;}
.ed-stat{border:1px solid var(--line);border-radius:14px;padding:24px;background:var(--surface);text-align:center;}
.ed-n{display:block;font-size:36px;font-weight:800;color:var(--ac);letter-spacing:-.02em;line-height:1;font-family:inherit;}
.ed-l{display:block;margin-top:8px;font-size:13px;color:var(--muted);}
.ed-sec{margin-top:44px;}
.ed-backwrap{margin-top:34px;}

/* ===== venue photos (hero slideshow + gallery) ===== */
.hero-photos{position:absolute;inset:0;z-index:0;overflow:hidden;background:var(--bg);}
.hphoto{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;will-change:transform,opacity;filter:brightness(1.12) saturate(1.05);
  animation:heroFade 24s ease-in-out infinite, kenburns 24s ease-in-out infinite;}
.hphoto.hp1{background-image:url(../assets/img/venue/hero-1.jpg);animation-delay:0s,0s;}
.hphoto.hp2{background-image:url(../assets/img/venue/hero-2.jpg);animation-delay:8s,8s;}
.hphoto.hp3{background-image:url(../assets/img/venue/hero-3.jpg);animation-delay:16s,16s;}
@keyframes heroFade{0%{opacity:0}4%{opacity:1}30%{opacity:1}36%{opacity:0}100%{opacity:0}}
@keyframes kenburns{0%{transform:scale(1.05)}100%{transform:scale(1.16)}}
/* 배경은 밝게 유지 + 아주 살짝만 톤 다운 (균일 ~14% + 글자 영역 소폭) */
.hero-scrim{position:absolute;inset:0;z-index:1;
  background:
    radial-gradient(130% 85% at 50% 44%, rgba(8,5,16,.20) 0%, transparent 66%),
    linear-gradient(180deg, rgba(8,5,16,.14) 0%, rgba(8,5,16,.14) 58%, rgba(8,5,16,.42) 86%, rgba(8,5,16,.74) 100%);}
.hero.hero-photo .waves{z-index:2;opacity:.18;}
/* 글자 바로 주변만 또렷한 그림자(타이트 헤일로) → 배경은 안 어두워짐 */
.hero.hero-photo .wave-title{filter:drop-shadow(0 1px 1px rgba(0,0,0,.6)) drop-shadow(0 2px 9px rgba(0,0,0,.5));}
.hero.hero-photo .sub{color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.95),0 1px 7px rgba(0,0,0,.7);}
.hero.hero-photo .kick{color:#fff;text-shadow:0 1px 3px rgba(0,0,0,.95),0 0 8px rgba(0,0,0,.65);}
/* 메타 카드·보조 버튼: 요소만 대비 보강 (배경은 그대로 밝게) */
.hero.hero-photo .meta>div{background:rgba(8,5,16,.44);border-color:rgba(255,255,255,.18);}
.hero.hero-photo .meta dt{color:#cfc4ee;}
.hero.hero-photo .meta dd{color:#fff;}
.hero.hero-photo .link-u{display:inline-flex;align-items:center;justify-content:center;color:#fff;background:rgba(8,5,16,.36);border:1px solid rgba(255,255,255,.24);font-size:15px;line-height:1;padding:12px 25px;border-radius:999px;backdrop-filter:blur(6px);text-shadow:0 1px 2px rgba(0,0,0,.7);}
.hero.hero-photo .link-u:hover{background:rgba(8,5,16,.5);border-color:rgba(255,255,255,.4);}
.hero.hero-photo::before{z-index:2;}
.hero.hero-photo .hero-inner{z-index:3;}
.hero.hero-photo .dmarquee{z-index:3;background:rgba(10,7,18,.28);backdrop-filter:blur(2px);}

.venue{padding:96px 0;position:relative;}
.venue .sec-head{text-align:center;margin-bottom:44px;}
.venue-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:200px;grid-auto-flow:dense;gap:14px;}
.venue-item{position:relative;margin:0;overflow:hidden;border-radius:18px;border:1px solid var(--line);background:var(--panel);}
.venue-item img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .8s cubic-bezier(.2,.7,.2,1),filter .4s;filter:saturate(.96);}
.venue-item:hover img{transform:scale(1.09);filter:saturate(1.08);}
.venue-item figcaption{position:absolute;left:0;right:0;bottom:0;padding:34px 18px 16px;font-family:var(--display);font-weight:600;font-size:15px;color:#fff;
  background:linear-gradient(transparent,rgba(8,5,16,.86));opacity:0;transform:translateY(10px);transition:opacity .32s,transform .32s;}
.venue-item:hover figcaption{opacity:1;transform:none;}
.venue-item::after{content:"";position:absolute;inset:0;border-radius:18px;box-shadow:inset 0 0 0 1px rgba(139,92,246,0),0 0 0 0 rgba(139,92,246,0);transition:box-shadow .35s;pointer-events:none;}
.venue-item:hover::after{box-shadow:inset 0 0 0 1px rgba(139,92,246,.55),0 24px 60px -28px rgba(139,92,246,.7);}
.vi-wide{grid-column:span 2;}
.vi-tall{grid-row:span 2;}
@media (max-width:860px){
  .venue-grid{grid-template-columns:repeat(2,1fr);grid-auto-rows:170px;}
  .vi-wide{grid-column:span 2;}
  .vi-tall{grid-row:span 1;}
}
@media (max-width:520px){
  .venue-grid{grid-auto-rows:150px;}
  .venue-item figcaption{opacity:1;transform:none;font-size:13px;padding:24px 14px 12px;}
}
@media (prefers-reduced-motion:reduce){
  .hphoto{animation:none!important;}
  .hphoto.hp1{opacity:1!important;}
  .venue-item img{transition:none!important;}
}

/* ===== brand logo ===== */
.brand{display:inline-flex;align-items:center;}
.brand-logo{height:24px;width:auto;display:block;}

/* ===== mobile header compaction (after base rules so it wins) ===== */
@media (max-width:760px){
  .nav{gap:10px;}
  .nav-right{gap:8px;}
  .brand-logo{height:20px;}
  .lang-toggle{display:none;}            /* 로고 폭 확보 — 언어는 자동감지 */
  .btn.sm{padding:8px 14px;font-size:13px;}
}

/* ===== alumni advisor filter + award badge ===== */
.alumni-filter{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:28px;}
.alf{background:var(--glass);border:1px solid var(--line);color:var(--muted);font-family:inherit;font-size:13px;font-weight:600;line-height:1;padding:9px 16px;border-radius:999px;cursor:pointer;transition:color .15s,border-color .15s,background .15s;}
.alf:hover{color:var(--ink);border-color:var(--violet);}
.alf.active{background:linear-gradient(120deg,var(--violet),var(--pink));color:#fff;border-color:transparent;}
.alum-adv{color:#c7b8ff;font-size:13px;margin-top:3px;}
.award-chip{display:inline-flex;align-items:center;gap:4px;font-size:12px;font-weight:700;color:#ffd88a;background:rgba(255,196,64,.14);border:1px solid rgba(255,196,64,.42);padding:3px 9px;border-radius:999px;margin-left:9px;vertical-align:middle;white-space:nowrap;}
.paper.is-award{border-color:rgba(255,196,64,.4);}

/* ===== paper submission form ===== */
.submit-wrap{max-width:640px;margin:0 auto;}
.file-input{width:100%;font:inherit;font-size:14px;color:var(--muted);padding:11px 12px;background:var(--glass);border:1px dashed var(--line);border-radius:12px;cursor:pointer;}
.file-input:hover{border-color:var(--violet);}
.file-input::file-selector-button{font:inherit;font-weight:700;font-size:13px;color:#fff;background:linear-gradient(120deg,var(--violet),var(--pink));border:0;border-radius:999px;padding:8px 16px;margin-right:12px;cursor:pointer;}

/* ===== photo gallery + lightbox ===== */
.gallery-wrap{display:flex;flex-direction:column;gap:34px;}
.gal-year{font-family:var(--display);font-size:22px;font-weight:700;color:#c7b8ff;margin:0 0 2px;}
.gallery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;}
.gal-item{position:relative;margin:0;overflow:hidden;border-radius:16px;border:1px solid var(--line);background:var(--panel);cursor:zoom-in;aspect-ratio:4/3;}
.gal-item img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .6s cubic-bezier(.2,.7,.2,1);}
.gal-item:hover img{transform:scale(1.07);}
.gal-item figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 14px 12px;font-family:var(--display);font-weight:600;font-size:14px;color:#fff;background:linear-gradient(transparent,rgba(8,5,16,.82));opacity:0;transition:opacity .3s;}
.gal-item:hover figcaption{opacity:1;}
.lightbox{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;background:rgba(6,4,12,.92);backdrop-filter:blur(6px);padding:32px;}
.lightbox.open{display:flex;}
.lightbox .lb-img{max-width:92vw;max-height:82vh;border-radius:12px;box-shadow:0 30px 80px -20px rgba(0,0,0,.8);}
.lightbox .lb-cap{position:absolute;bottom:22px;left:0;right:0;text-align:center;color:#e6dcff;font-family:var(--display);font-weight:600;}
.lb-close{position:absolute;top:18px;right:26px;background:transparent;border:0;color:#fff;font-size:34px;line-height:1;cursor:pointer;}
@media (max-width:520px){.gal-item figcaption{opacity:1;}}
@media (prefers-reduced-motion:reduce){.gal-item img{transition:none!important;}}

/* ===== merged-page sub-sections (cfp+submit / schedule+dates) ===== */
.cfp-submit{margin-top:56px;padding-top:44px;border-top:1px solid var(--line);}
.sub-head{margin:0 0 22px;}
.sub-head.gap-top{margin-top:48px;}
.sub-title{font-size:26px;font-weight:700;}
.sub-lead{color:var(--muted);margin:8px 0 0;font-size:16px;}

/* ===== embedded external form (Google Form) ===== */
.form-embed-box{grid-column:1 / -1;max-width:720px;margin:0 auto;width:100%;}
.form-embed{width:100%;min-height:1550px;border:0;border-radius:16px;background:#fff;display:block;box-shadow:0 20px 60px -30px rgba(0,0,0,.6);}

/* 임베드 활성 시 참가신청 그리드: 소개 숨기고 폼 가운데 정렬 */
.reg-grid.embed-mode{grid-template-columns:1fr;}
.reg-grid.embed-mode .reg-aside{display:none;}

/* ===== 홈 행사 포스터: 캐러셀 + 라이트박스 ===== */
.poster-home{padding:60px 0;position:relative;}
.poster-home .sec-head{text-align:center;margin-bottom:28px;}
.poster-carousel{position:relative;width:min(100%,880px);margin:0 auto;}
.pc-viewport{overflow:hidden;border-radius:16px;border:1px solid var(--line);background:var(--panel);box-shadow:0 20px 50px rgba(0,0,0,.35);}
.pc-track{display:flex;transition:transform .5s cubic-bezier(.4,0,.2,1);will-change:transform;}
.pc-slide{min-width:100%;margin:0;}
.pc-slide img{display:block;width:100%;height:auto;cursor:zoom-in;}
.pc-arrow{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:rgba(20,26,45,.72);backdrop-filter:blur(6px);color:var(--ink);font-size:26px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s;z-index:2;}
.pc-arrow:hover{background:var(--violet);}
.pc-prev{left:-8px;} .pc-next{right:-8px;}
.pc-dots{display:flex;justify-content:center;gap:9px;margin-top:20px;}
.pc-dot{width:9px;height:9px;border-radius:50%;border:0;padding:0;cursor:pointer;background:var(--line);transition:background .2s,transform .2s;}
.pc-dot.on{background:var(--violet);transform:scale(1.25);}
.pc-lightbox{position:fixed;inset:0;z-index:1000;background:rgba(8,10,20,.9);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:24px;animation:pcFade .2s ease;}
.pc-lightbox img{max-width:94vw;max-height:92vh;border-radius:10px;box-shadow:0 24px 70px rgba(0,0,0,.6);}
.pc-lb-close{position:absolute;top:18px;right:22px;width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:rgba(20,26,45,.7);color:var(--ink);font-size:26px;line-height:1;cursor:pointer;}
.pc-lb-close:hover{background:var(--pink);}
body.pc-lb-open{overflow:hidden;}
@keyframes pcFade{from{opacity:0}to{opacity:1}}
@media (max-width:560px){.pc-prev{left:2px;} .pc-next{right:2px;} .pc-arrow{width:40px;height:40px;font-size:23px;}}
@media (prefers-reduced-motion: reduce){.pc-track{transition:none;} .pc-lightbox{animation:none;}}

/* ===== 발표 세션 시간표 (발표논문 페이지 상단) ===== */
.sessions-sec{margin-bottom:30px;}
.sec-title-sm{font-size:clamp(20px,3vw,26px);font-weight:700;margin:0 0 18px;}
.paper-list-head{margin-top:52px;padding-top:36px;border-top:1px solid var(--line);}
.ses-slot{display:flex;align-items:flex-start;gap:18px;padding:14px 18px;border:1px solid var(--line);border-radius:12px;background:var(--panel);margin-bottom:10px;}
.ses-slot .ses-time{font-weight:700;color:#c4b5fd;min-width:98px;white-space:nowrap;font-variant-numeric:tabular-nums;padding-top:2px;}
.ses-body{display:flex;flex-direction:column;gap:10px;flex:1;}
.ses-note{align-self:flex-start;min-width:172px;text-align:center;font-size:12px;font-weight:600;color:var(--muted);background:rgba(255,255,255,.05);border:1px solid var(--line);padding:3px 12px;border-radius:999px;white-space:nowrap;}
.ses-rooms{display:flex;gap:14px;flex-wrap:wrap;}
.ses-room{display:flex;align-items:baseline;gap:10px;flex:1;min-width:200px;}
.ses-rlabel{flex:none;min-width:52px;text-align:center;font-size:12px;font-weight:700;color:#c4b5fd;background:rgba(139,92,246,.16);border:1px solid rgba(139,92,255,.32);padding:3px 10px;border-radius:999px;white-space:nowrap;}
.ses-who{font-weight:600;color:var(--ink);}
.ses-break{justify-content:center;align-items:center;background:transparent;border-style:dashed;color:var(--muted);}
.ses-break .ses-brk{font-weight:600;letter-spacing:.4px;}
@media (max-width:600px){
  .ses-slot{gap:12px;}
  .ses-rooms{flex-direction:column;gap:8px;width:100%;}
  .ses-room{min-width:0;width:100%;}
  .ses-note{min-width:0;width:100%;}
}

/* ===== 커스텀 드롭다운 (네이티브 select 강화 · 옵션까지 스타일) ===== */
.csel{position:relative;}
.csel-native{position:absolute;inset:0;opacity:0;pointer-events:none;}
.csel-btn{width:100%;text-align:left;background:var(--glass);border:1px solid var(--line);border-radius:10px;color:var(--ink);padding:12px 42px 12px 14px;font:inherit;font-size:15px;cursor:pointer;position:relative;transition:border-color .15s,box-shadow .15s,background-color .15s;}
.csel-btn.ph{color:#7d72a0;}
.csel-btn::after{content:"";position:absolute;right:15px;top:50%;width:13px;height:13px;transform:translateY(-50%);transition:transform .22s;background:no-repeat center/contain url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23a7b0cc' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");}
.csel-btn:hover{border-color:rgba(165,185,255,.4);background-color:rgba(255,255,255,.1);}
.csel.open .csel-btn{border-color:var(--violet);box-shadow:0 0 0 4px rgba(139,92,246,.2);}
.csel.open .csel-btn::after{transform:translateY(-50%) rotate(180deg);}
.csel-list{position:absolute;z-index:40;top:calc(100% + 7px);left:0;right:0;background:#242c46;border:1px solid rgba(165,185,255,.24);border-radius:12px;padding:6px;box-shadow:0 24px 60px -14px rgba(0,0,0,.7);max-height:288px;overflow:auto;opacity:0;visibility:hidden;transform:translateY(-8px) scale(.985);transform-origin:top;transition:opacity .16s,transform .16s,visibility .16s;}
.csel.open .csel-list{opacity:1;visibility:visible;transform:translateY(0) scale(1);}
.csel-opt{padding:11px 13px;border-radius:8px;cursor:pointer;font-size:15px;color:var(--ink);transition:background-color .12s;}
.csel-opt:hover{background:rgba(139,92,246,.18);}
.csel-opt.on{background:rgba(139,92,246,.26);font-weight:600;color:#eae3ff;}
.csel-opt.ph{color:#7d72a0;}
@media (prefers-reduced-motion:reduce){.csel-list,.csel-btn::after{transition:none;}}