/* ============================================================
   UOS 리서치프러너 1기 — 공통 디자인 시스템
   다크 테마 · 라임 시그널 · GmarketSans + Pretendard
   ============================================================ */

@font-face{
  font-family:'GmarketSans';
  src:url('https://fastly.jsdelivr.net/gh/projectnoonnu/noonfonts_2001@1.1/GmarketSansTTFBold.woff') format('woff');
  font-weight:700; font-display:swap;
}
@font-face{
  font-family:'GmarketSans';
  src:url('https://fastly.jsdelivr.net/gh/projectnoonnu/noonfonts_2001@1.1/GmarketSansTTFMedium.woff') format('woff');
  font-weight:500; font-display:swap;
}

:root{
  --ink:#0A0C10;
  --ink-2:#10131A;
  --ink-3:#161A23;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.18);
  --paper:#ECEFF3;
  --muted:#878F9E;
  --muted-2:#5C6473;
  --signal:#CCFF00;
  --signal-2:#19E6C8;
  --hot:#FF5A36;
  --display:'GmarketSans','Pretendard',sans-serif;
  --body:'Pretendard',-apple-system,BlinkMacSystemFont,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,monospace;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--ink);
  color:var(--paper);
  font-family:var(--body);
  font-weight:400;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  word-break:keep-all;
  overflow-wrap:break-word;
}
::selection{background:var(--signal);color:#000}
a{color:inherit;text-decoration:none}
img,svg{display:block}

/* ---------- atmospheric layers ---------- */
.grain{
  position:fixed;inset:0;z-index:9999;pointer-events:none;
  opacity:.05;mix-blend-mode:overlay;
}
.vignette{
  position:fixed;inset:0;z-index:1;pointer-events:none;
  background:radial-gradient(120% 80% at 50% 0%,transparent 40%,rgba(0,0,0,.55) 100%);
}

/* ---------- scroll progress ---------- */
.progress{
  position:fixed;top:0;left:0;height:2px;width:0%;
  background:var(--signal);z-index:10000;
  box-shadow:0 0 12px var(--signal);
  transition:width .1s linear;
}

/* ---------- top bar ---------- */
.bar{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px clamp(20px,5vw,64px);
  backdrop-filter:blur(6px);
  transition:background .4s,border-color .4s,padding .4s;
  border-bottom:1px solid transparent;
}
.bar.solid{
  background:rgba(10,12,16,.78);
  border-bottom:1px solid var(--line);
  padding-top:14px;padding-bottom:14px;
}
.bar .brand{
  font-family:var(--mono);font-size:12px;
  display:flex;align-items:center;gap:10px;
  flex-wrap:wrap;
}
.bar .brand .brand-tag{
  background:var(--signal);color:#000;
  padding:7px 12px;border-radius:3px;
  font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;line-height:1;
  box-shadow:0 0 24px rgba(204,255,0,.32);
  transition:box-shadow .25s,transform .25s;
}
.bar .brand:hover .brand-tag{
  box-shadow:0 0 32px rgba(204,255,0,.5);
  transform:translateY(-1px);
}
.bar .brand .brand-sub{
  color:var(--paper);letter-spacing:.04em;
  font-size:11.5px;font-weight:500;
  text-transform:none;
  font-family:var(--display);
}
@media(max-width:560px){
  .bar .brand .brand-sub{display:none}
  .bar .brand .brand-tag{font-size:11px;padding:6px 10px;letter-spacing:.1em}
}
.bar .cta{
  font-family:var(--mono);font-size:12px;letter-spacing:.16em;
  text-transform:uppercase;font-weight:700;
  background:var(--signal);color:#000;
  border:1px solid var(--signal);border-radius:999px;
  padding:9px 20px;cursor:pointer;
  transition:transform .2s,box-shadow .25s,background .25s;
  box-shadow:0 0 18px rgba(204,255,0,.32);
}
.bar .cta:hover{
  background:var(--paper);color:#000;border-color:var(--paper);
  box-shadow:0 0 26px rgba(255,255,255,.3);
  transform:translateY(-1px);
}
.bar .nav{display:flex;align-items:center;gap:28px}
.bar .nav a:not(.cta){
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--muted);transition:color .2s;
}
.bar .nav a:not(.cta):hover{color:var(--paper)}
.bar .nav a:not(.cta).active{color:var(--signal)}

/* 서브메뉴 (서울지역현안 > 6개 브리프) */
.bar .nav .nav-item-with-sub{position:relative;display:flex;align-items:center}
/* 트리거 ↔ 서브메뉴 사이 hover 갭을 메우는 투명 브릿지 (서브메뉴 폭과 동일하게 중앙정렬) */
.bar .nav .nav-item-with-sub::after{
  content:"";position:absolute;top:100%;left:50%;transform:translateX(-50%);
  width:280px;height:18px;
}
.bar .nav .nav-item-with-sub > a{display:inline-flex;align-items:center;gap:6px}
.bar .nav .nav-item-with-sub > a::after{
  content:"▾";font-size:9px;color:var(--muted-2);
  transition:transform .2s,color .2s;
}
.bar .nav .nav-item-with-sub:hover > a::after{
  transform:translateY(1px) rotate(180deg);color:var(--signal);
}
.bar .nav .nav-submenu{
  position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);
  background:rgba(10,12,16,.97);backdrop-filter:blur(12px);
  border:1px solid var(--line-strong);border-radius:6px;
  padding:8px 0;min-width:260px;
  list-style:none;margin:0;
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .25s,visibility .25s,transform .25s;
  z-index:1001;
  box-shadow:0 14px 40px rgba(0,0,0,.5);
}
.bar .nav .nav-item-with-sub:hover .nav-submenu,
.bar .nav .nav-item-with-sub:focus-within .nav-submenu{
  opacity:1;visibility:visible;pointer-events:auto;
  transform:translateX(-50%) translateY(2px);
}
.bar .nav .nav-submenu::before{
  content:"";position:absolute;top:-7px;left:50%;transform:translateX(-50%) rotate(45deg);
  width:12px;height:12px;background:rgba(10,12,16,.97);
  border-left:1px solid var(--line-strong);border-top:1px solid var(--line-strong);
}
.bar .nav .nav-submenu li{padding:0;margin:0}
.bar .nav .nav-submenu a{
  display:block;padding:11px 20px;
  font-family:var(--mono);font-size:11px;letter-spacing:.1em;
  color:var(--muted);text-transform:none;
  border-left:2px solid transparent;
  transition:.18s;
}
.bar .nav .nav-submenu a:hover{
  color:var(--signal);background:rgba(204,255,0,.06);
  border-left-color:var(--signal);
}
.bar .nav .nav-submenu .sm-idx{
  font-weight:700;color:var(--signal);margin-right:8px;letter-spacing:.04em;
}
.bar .nav .nav-submenu .sm-tag{
  display:block;font-size:9.5px;color:var(--muted-2);margin-top:2px;letter-spacing:.04em;
}

/* 모바일에서는 서브메뉴를 들여쓰기 펼침 형태로 */
@media(max-width:920px){
  .bar .nav .nav-item-with-sub{flex-direction:column;align-items:stretch}
  .bar .nav .nav-item-with-sub > a::after{display:none}
  .bar .nav .nav-item-with-sub::after{display:none}
  .bar .nav .nav-submenu,
  .bar .nav .nav-item-with-sub:hover .nav-submenu,
  .bar .nav .nav-item-with-sub:focus-within .nav-submenu{
    position:static;transform:none;opacity:1;visibility:visible;pointer-events:auto;
    background:transparent;backdrop-filter:none;border:0;box-shadow:none;
    padding:0 0 10px 16px;min-width:0;left:auto;
  }
  .bar .nav .nav-submenu::before{display:none}
  .bar .nav .nav-submenu a{
    padding:10px 6px;font-size:12.5px;
    border-left:1px dashed var(--line);
    padding-left:14px;
  }
  .bar .nav .nav-submenu a:hover{
    border-left-color:var(--signal);background:transparent;
  }
}
.nav-toggle{
  display:none;background:none;border:0;cursor:pointer;padding:0;
  width:34px;height:34px;flex-direction:column;
  justify-content:center;align-items:flex-end;gap:6px;
}
.nav-toggle span{
  display:block;height:2px;width:24px;background:var(--paper);
  transition:transform .3s,opacity .25s;
}
.nav-toggle.open span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
@media(max-width:920px){
  .nav-toggle{display:flex}
  .bar .nav{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:rgba(10,12,16,.97);backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
    padding:0 clamp(20px,5vw,64px);
    max-height:0;overflow:hidden;opacity:0;pointer-events:none;
    transition:max-height .38s ease,opacity .25s,padding .38s;
  }
  .bar .nav.open{
    max-height:82vh;opacity:1;pointer-events:auto;
    padding-top:10px;padding-bottom:26px;
    overflow-y:auto;-webkit-overflow-scrolling:touch;
    overscroll-behavior:contain;
  }
  .bar .nav a:not(.cta){
    font-size:14px;padding:17px 2px;border-bottom:1px solid var(--line);
  }
  .bar .nav .cta{margin-top:20px;text-align:center;padding:14px 20px}
}

/* ---------- shared ---------- */
section{position:relative;z-index:2;scroll-margin-top:76px}
.wrap{max-width:1240px;margin:0 auto;padding:0 clamp(20px,5vw,64px)}
.kicker{
  font-family:var(--mono);font-size:12px;letter-spacing:.26em;
  text-transform:uppercase;color:var(--signal);
  display:flex;align-items:center;gap:14px;
}
.kicker::before{
  content:"";width:34px;height:1px;background:var(--signal);
  box-shadow:0 0 8px var(--signal);
}
.kicker.center{justify-content:center}
.sec-num{
  font-family:var(--mono);font-size:12px;letter-spacing:.2em;
  color:var(--muted-2);text-transform:uppercase;
}
h2.title{
  font-family:var(--display);font-weight:700;
  font-size:clamp(2rem,5.4vw,4rem);
  line-height:1.08;letter-spacing:-.02em;
  margin:22px 0 0;
}
h2.title.center{text-align:center}
.accent{color:var(--signal)}
.accent-2{color:var(--signal-2)}

/* ---------- reveal animation ---------- */
.rv{
  opacity:0;transform:translateY(28px);
  transition:opacity .9s cubic-bezier(.16,1,.3,1),transform .9s cubic-bezier(.16,1,.3,1);
}
.rv.in{opacity:1;transform:none}
.rv[data-d="1"]{transition-delay:.08s}
.rv[data-d="2"]{transition-delay:.16s}
.rv[data-d="3"]{transition-delay:.24s}
.rv[data-d="4"]{transition-delay:.32s}
.rv[data-d="5"]{transition-delay:.40s}

/* ---------- buttons ---------- */
.btn{
  font-family:var(--mono);font-size:13px;letter-spacing:.12em;
  text-transform:uppercase;font-weight:500;
  padding:16px 32px;border-radius:2px;
  display:inline-flex;align-items:center;gap:12px;
  transition:transform .25s,box-shadow .25s,background .25s,color .25s;
  cursor:pointer;border:0;
}
.btn-primary{background:var(--signal);color:#000;
  box-shadow:0 0 0 rgba(204,255,0,0)}
.btn-primary:hover{transform:translateY(-3px);
  box-shadow:0 14px 40px rgba(204,255,0,.32)}
.btn-ghost{border:1px solid var(--line-strong);color:var(--paper);background:transparent}
.btn-ghost:hover{border-color:var(--paper);background:rgba(255,255,255,.04)}
.btn .ar{transition:transform .25s}
.btn:hover .ar{transform:translateX(5px)}

/* ---------- page intro (서브 페이지 헤더) ---------- */
.page-intro{padding:160px 0 60px;position:relative;overflow:hidden}
.page-intro .meta{
  font-family:var(--mono);font-size:12px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--muted);
  margin-bottom:18px;
}
.page-intro .meta b{color:var(--paper)}
.page-intro .meta .sep{margin:0 14px;color:var(--muted-2)}
.page-intro .lead{
  margin-top:28px;font-size:clamp(1.05rem,1.7vw,1.3rem);
  color:#C7CCD6;max-width:64ch;line-height:1.7;
}
.page-intro .lead b{color:var(--paper);font-weight:500}
.page-intro .intro-bg{position:absolute;inset:0;z-index:0;pointer-events:none}
.page-intro .intro-grid{
  position:absolute;inset:-2px;
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(120% 100% at 70% 25%,#000 0%,transparent 75%);
  -webkit-mask-image:radial-gradient(120% 100% at 70% 25%,#000 0%,transparent 75%);
}
.page-intro .intro-glow{
  position:absolute;width:50vw;height:50vw;right:-10vw;top:-14vw;
  background:radial-gradient(circle,rgba(204,255,0,.12),transparent 62%);
  filter:blur(20px);
}
.page-intro .wrap{position:relative;z-index:2}

/* ---------- generic two-column section ---------- */
.section-pad{padding:90px 0 110px}
.section-pad.dense{padding:70px 0 80px}
.head-row{
  display:flex;justify-content:space-between;
  align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:46px;
}

/* ---------- gl-item list ---------- */
.grid-list{margin-top:46px;border-top:1px solid var(--line)}
.gl-item{
  display:grid;grid-template-columns:80px 1fr;gap:24px;
  align-items:baseline;padding:30px 0;
  border-bottom:1px solid var(--line);
  transition:padding-left .35s,background .35s;
}
.gl-item:hover{padding-left:14px;background:rgba(255,255,255,.015)}
.gl-item .n{
  font-family:var(--mono);font-size:13px;color:var(--signal);
  letter-spacing:.1em;
}
.gl-item .t{
  font-size:clamp(1.1rem,2vw,1.5rem);font-weight:500;
  color:var(--paper);line-height:1.45;font-family:var(--display);
}
.gl-item .t b{color:var(--signal-2);font-weight:500}
@media(max-width:760px){
  .gl-item{grid-template-columns:54px 1fr;gap:16px}
}

/* ---------- who-grid ---------- */
.who-grid{
  display:grid;grid-template-columns:repeat(2,1fr);
  gap:1px;background:var(--line);margin-top:30px;
  border:1px solid var(--line);
}
.who-cell{
  background:var(--ink);padding:26px 28px;min-height:128px;
  display:flex;flex-direction:column;justify-content:space-between;gap:18px;
  transition:background .35s;
}
.who-cell:hover{background:var(--ink-2)}
.who-cell .wn{
  font-family:var(--mono);font-size:12px;color:var(--muted-2);
  letter-spacing:.2em;
}
.who-cell .wt{
  font-size:clamp(1.15rem,2.2vw,1.55rem);font-weight:500;
  line-height:1.45;color:var(--paper);font-family:var(--display);
}
.who-cell:hover .wt{color:var(--signal)}
@media(max-width:760px){
  .who-grid{grid-template-columns:1fr}
}

/* ---------- tl-block (모집 일정 박스) ---------- */
.tl-block{
  border:1px solid var(--line-strong);border-radius:6px;
  background:rgba(255,255,255,.015);padding:28px 32px 6px;
}
.tl-block h3{
  font-family:var(--mono);font-size:13px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--signal);
  padding-bottom:18px;border-bottom:1px solid var(--line-strong);
  margin-bottom:8px;
}
.tl-item{
  display:grid;grid-template-columns:130px 1fr;gap:18px;
  padding:22px 0;border-bottom:1px solid var(--line);align-items:start;
}
.tl-block .tl-item:last-child{border-bottom:none}
.tl-item .d{
  font-family:var(--mono);font-size:13px;color:var(--paper);
  letter-spacing:.04em;
}
.tl-item .l{color:#C7CCD6;font-size:1rem;line-height:1.5}
.tl-item.hi .d{color:var(--signal)}
.tl-item.hi .l{color:var(--paper);font-weight:500}
.tl-item.key{
  background:rgba(204,255,0,.06);border:1px solid rgba(204,255,0,.32);
  border-radius:6px;padding:18px;margin:10px 0;
}
.tl-item.key .d{color:var(--signal);font-weight:700}
.tl-item.key .l{
  color:var(--paper);font-weight:600;
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
}
.tl-item.key .tl-key-cta{
  font-family:var(--mono);font-size:10px;letter-spacing:.12em;
  text-transform:uppercase;color:#000;background:var(--signal);
  border:0;padding:5px 12px;border-radius:999px;cursor:pointer;
  transition:box-shadow .25s,transform .2s;
}
.tl-item.key .tl-key-cta:hover{
  transform:translateY(-1px);box-shadow:0 6px 18px rgba(204,255,0,.35);
}

/* ---------- sitemap cards (메인 페이지) ---------- */
.sitemap{
  display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:46px;
}
.sm-card{
  position:relative;display:block;
  border:1px solid var(--line-strong);border-radius:6px;
  background:var(--ink-2);padding:28px 26px 32px;
  transition:border-color .3s,background .3s,transform .3s;
  overflow:hidden;
}
.sm-card::after{
  content:"→";position:absolute;right:22px;bottom:22px;
  font-family:var(--mono);font-size:18px;color:var(--muted-2);
  transition:color .3s,transform .3s;
}
.sm-card:hover{
  border-color:var(--signal);background:var(--ink-3);transform:translateY(-3px);
}
.sm-card:hover::after{color:var(--signal);transform:translate(4px,-4px)}
.sm-card .sm-n{
  font-family:var(--mono);font-size:11px;letter-spacing:.18em;
  color:var(--signal);
}
.sm-card .sm-t{
  margin-top:12px;font-family:var(--display);font-weight:700;
  font-size:1.4rem;color:var(--paper);letter-spacing:-.01em;
}
.sm-card .sm-d{
  margin-top:10px;font-size:.95rem;color:#C7CCD6;line-height:1.55;
  max-width:30ch;
}
@media(max-width:900px){
  .sitemap{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:560px){
  .sitemap{grid-template-columns:1fr}
}

/* ---------- callout ---------- */
.callout{
  border:1px solid var(--line-strong);border-radius:6px;
  background:var(--ink-2);padding:32px 36px;
  margin:36px 0;
}
.callout-tag{
  display:inline-block;font-family:var(--mono);font-size:11px;
  letter-spacing:.18em;text-transform:uppercase;color:var(--signal);
  border:1px solid rgba(204,255,0,.32);border-radius:999px;
  padding:5px 13px;margin-bottom:18px;
}
.callout h3{
  font-family:var(--display);font-weight:700;font-size:1.5rem;
  color:var(--paper);margin-bottom:14px;letter-spacing:-.01em;
}
.callout p{color:#C7CCD6;font-size:1.02rem;line-height:1.75}
.callout p + p{margin-top:14px}
.callout a{
  color:var(--signal-2);border-bottom:1px dashed rgba(25,230,200,.4);
}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:70px 0 50px;margin-top:60px}
.foot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:40px}
.foot .org h4{
  font-family:var(--mono);font-size:11px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--muted-2);margin-bottom:16px;
}
.foot .org p{
  font-family:var(--display);font-weight:500;font-size:1.15rem;
  color:var(--paper);line-height:1.7;
}
.foot .org p a{color:var(--signal-2);transition:color .2s}
.foot .org p a:hover{color:var(--signal)}
.foot .copy{
  font-family:var(--mono);font-size:11px;color:var(--muted-2);
  letter-spacing:.06em;align-self:flex-end;
}

/* ---------- 프로그램 캘린더 (6/7월) ---------- */
.cal{
  display:grid;grid-template-columns:1fr 1fr;gap:30px;margin-top:14px;
}
.cal-mh{
  font-family:var(--mono);font-size:13px;letter-spacing:.2em;
  color:var(--signal);margin-bottom:14px;
}
.cal-dow,.cal-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}
.cal-dow{margin-bottom:6px}
.cal-dow span{
  font-family:var(--mono);font-size:11px;color:var(--muted-2);
  text-align:center;padding:4px 0;
}
.cal-dow span.sun{color:var(--hot)}
.cal-day{
  aspect-ratio:1;display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:13px;color:#C7CCD6;font-style:normal;
  border:1px solid var(--line);border-radius:3px;
}
.cal-day.is-empty{border:0}
.cal-day.is-field{
  background:rgba(204,255,0,.10);border-color:rgba(204,255,0,.22);color:var(--paper);
}
.cal-day.is-hack{
  background:var(--signal);border-color:var(--signal);color:#000;font-weight:700;
}
.cal-day.is-mid{
  background:rgba(25,230,200,.14);border-color:var(--signal-2);
  color:var(--signal-2);font-weight:700;
}
.cal-day.is-final{
  background:var(--signal-2);border-color:var(--signal-2);color:#000;font-weight:700;
}
.cal-legend{
  display:flex;flex-wrap:wrap;gap:10px 22px;
  margin:24px 0 0;font-family:var(--mono);font-size:12px;color:var(--muted);
}
.cal-legend span{display:flex;align-items:center;gap:8px}
.cal-legend .sw{width:14px;height:14px;border-radius:3px;display:inline-block}
.cal-legend .sw-hack{background:var(--signal)}
.cal-legend .sw-field{background:rgba(204,255,0,.10);border:1px solid rgba(204,255,0,.30)}
.cal-legend .sw-mid{background:rgba(25,230,200,.14);border:1px solid var(--signal-2)}
.cal-legend .sw-final{background:var(--signal-2)}
@media(max-width:620px){ .cal{grid-template-columns:1fr;gap:24px} }

/* ---------- 사전설명회 팝업 모달 ---------- */
.briefing-modal{
  position:fixed;inset:0;z-index:20000;
  display:flex;align-items:center;justify-content:center;
  padding:24px;opacity:0;visibility:hidden;
  transition:opacity .35s ease,visibility .35s ease;
}
.briefing-modal.open{opacity:1;visibility:visible}
.briefing-modal .briefing-backdrop{
  position:absolute;inset:0;
  background:radial-gradient(120% 100% at 50% 0%,rgba(0,0,0,.55),rgba(0,0,0,.88));
  backdrop-filter:blur(8px);
  cursor:pointer;
}
.briefing-card{
  position:relative;z-index:1;
  width:min(560px,100%);max-height:90vh;overflow-y:auto;
  background:var(--ink-2);
  border:1px solid var(--signal);border-radius:10px;
  padding:40px 38px 36px;
  box-shadow:0 30px 80px rgba(0,0,0,.7),0 0 80px rgba(204,255,0,.15);
  transform:translateY(20px) scale(.97);
  transition:transform .4s cubic-bezier(.16,1,.3,1);
}
.briefing-modal.open .briefing-card{transform:translateY(0) scale(1)}
.briefing-card .briefing-close{
  position:absolute;top:14px;right:14px;
  width:36px;height:36px;border-radius:50%;
  background:transparent;border:1px solid var(--line-strong);
  color:var(--muted);font-size:18px;line-height:1;
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:.25s;
}
.briefing-card .briefing-close:hover{
  border-color:var(--signal);color:var(--signal);
  background:rgba(204,255,0,.06);
}
.briefing-card .briefing-kicker{
  font-family:var(--mono);font-size:11px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--signal);
  display:flex;align-items:center;gap:12px;
}
.briefing-card .briefing-kicker::before{
  content:"";width:24px;height:1px;background:var(--signal);
  box-shadow:0 0 8px var(--signal);
}
.briefing-card h3.briefing-title{
  margin-top:16px;font-family:var(--display);font-weight:700;
  font-size:clamp(1.6rem,3.4vw,2.2rem);line-height:1.2;
  color:var(--paper);letter-spacing:-.02em;
}
.briefing-card h3.briefing-title .accent{
  color:var(--signal);text-shadow:0 0 20px rgba(204,255,0,.45);
}
.briefing-card .briefing-date{
  margin-top:14px;font-family:var(--mono);font-size:12.5px;
  letter-spacing:.12em;color:var(--paper);
  padding:8px 14px;border:1px solid rgba(204,255,0,.3);
  border-radius:999px;display:inline-block;
  background:rgba(204,255,0,.05);
}
.briefing-card .briefing-lead{
  margin-top:20px;color:#C7CCD6;font-size:1rem;line-height:1.7;
}
.briefing-card .briefing-lead b{color:var(--paper);font-weight:500}
.briefing-card .briefing-bullets{
  margin-top:22px;list-style:none;padding:0;
  display:flex;flex-direction:column;gap:10px;
}
.briefing-card .briefing-bullets li{
  position:relative;padding-left:26px;
  color:#C7CCD6;font-size:.95rem;line-height:1.55;
}
.briefing-card .briefing-bullets li::before{
  content:"→";position:absolute;left:0;top:0;
  font-family:var(--mono);font-weight:700;
  color:var(--signal);
}
.briefing-card .briefing-bullets li b{color:var(--paper);font-weight:500}
.briefing-card .briefing-cta{
  margin-top:28px;display:flex;justify-content:center;
}
.briefing-card .briefing-cta .btn{font-size:13px;padding:16px 28px}
.briefing-card .briefing-meta{
  margin-top:18px;text-align:center;font-family:var(--mono);
  font-size:11px;letter-spacing:.08em;color:var(--muted-2);
}
@media(max-width:560px){
  .briefing-card{padding:34px 24px 28px}
  .briefing-card h3.briefing-title{font-size:1.5rem}
}

/* 사전설명회 마킹된 CTA 종료 후 숨김 (JS가 클래스 토글) */
body.briefing-ended [data-briefing-cta]{display:none!important}

/* ---------- a11y ---------- */
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .rv{opacity:1;transform:none}
  html{scroll-behavior:auto}
}