/* ════════════════════════════════════════════════════════════════
   KIT 슈퍼컴퓨팅센터 데이터 허브 — 공유 디자인 시스템
   "Immersive Depth": 딥 네이비 심도 + 시안 글로우 + 데이터 노드 레이어
   구성: 1.토큰 → 2.베이스 → 3.타이포/섹션 헤더 → 4.레이아웃
        → 5.컴포넌트 → 6.유틸리티(리빌/글로우) → 7.모션 축소 → 8.반응형
   ════════════════════════════════════════════════════════════════ */

/* ── 0. 웹폰트 (셀프호스팅 — 폐쇄망에서도 외부 요청 없음) ───── */
@font-face{
  font-family:"Pretendard Variable";
  src:url("PretendardVariable.woff2") format("woff2-variations");
  font-weight:45 920;
  font-style:normal;
  font-display:swap;
}

/* ── 1. 디자인 토큰 ─────────────────────────────────────────── */
:root{
  /* 브랜드 팔레트 (KIT 공식 — 값 변경 금지) */
  --kit-blue:#00A9CE;        /* Pantone 312C 주조색 */
  --kit-blue-deep:#005A96;   /* 로고 구체 본체 블루 */
  --kit-navy-900:#0A2B47;    /* 다크 섹션 배경 */
  --kit-navy-950:#061C30;    /* 히어로·푸터 배경 */
  --kit-yellow:#FEDD00;      /* Pantone Yellow C — 포인트 전용, 절제 사용 */
  --kit-gray:#939598;        /* Pantone 423C */
  --ink:#1E1512;             /* 워드마크 먹색 — 라이트 배경 제목 */
  --cyan-hi:#00A8E4;         /* 로고 구체 하이라이트 시안 */

  /* 파생 램프 */
  --navy-975:#04141F;
  --navy-800:#0F3A5E;
  --navy-700:#144C79;
  --blue-100:#CFEEF7;
  --blue-200:#9FDDEE;
  --mist-50:#F5F9FC;
  --mist-100:#EAF1F7;
  --mist-200:#D9E5EE;

  /* 시맨틱 컬러 */
  --t-on-dark:#E8F0F6;
  --t-on-dark-mut:#9FB6C8;
  --t-on-light:#122A3D;
  --t-muted-light:#4A6072;
  --line-dark:rgba(159,206,231,.14);
  --line-light:#D9E5EE;
  --glass:rgba(15,58,94,.34);
  --blue-ghost:rgba(0,169,206,.13);        /* 아웃라인 섹션 번호 폴백 채움 */
  --blue-ghost-deep:rgba(0,90,150,.10);

  /* 타이포 */
  --font:"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,"Malgun Gothic","맑은 고딕",system-ui,sans-serif;
  --fs-h1:clamp(2.15rem,1.2rem + 3.4vw,3.55rem);
  --fs-h2:clamp(1.65rem,1.1rem + 1.9vw,2.3rem);
  --fs-secno:clamp(3.1rem,1.8rem + 4.6vw,5.2rem);   /* 아웃라인 대형 섹션 번호 */

  /* 형태·심도 */
  --r-lg:18px; --r-md:14px; --r-sm:10px;
  --shadow-glow:0 0 0 1px rgba(0,169,206,.35),0 12px 40px rgba(0,169,206,.18);
  --shadow-soft:0 10px 34px rgba(6,28,48,.10);
  --header-h:74px;
  --ease:cubic-bezier(.22,.75,.28,1);
}

/* ── 2. 베이스 ─────────────────────────────────────────────── */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--kit-navy-950);
  color:var(--t-on-dark);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
[hidden]{display:none!important}  /* .btn 등의 display 지정이 UA [hidden]을 이기는 것 방지 */
a{color:inherit;text-decoration:none}
ul{list-style:none}
h1,h2,h3,h4{line-height:1.3;letter-spacing:-.02em;font-weight:800}
::selection{background:rgba(0,169,206,.35)}
:focus-visible{outline:2px solid var(--kit-blue);outline-offset:3px;border-radius:4px}
.light-sec :focus-visible,.acc :focus-visible,.form-card :focus-visible{outline-color:var(--kit-blue-deep)}
.dark-sec .acc :focus-visible{outline-color:var(--kit-blue)}
[id]{scroll-margin-top:calc(var(--header-h) + 1.2rem)}

.wrap{max-width:1180px;margin:0 auto;padding:0 1.5rem}

/* 스킵 링크 */
.skip{position:absolute;left:-999px;top:0;z-index:100;background:var(--kit-yellow);color:var(--ink);font-weight:700;padding:.6rem 1.1rem;border-radius:0 0 10px 0}
.skip:focus{left:0}

/* ── 3. 타이포 · 섹션 헤더 ─────────────────────────────────── */
.eyebrow{display:inline-flex;align-items:center;gap:.55rem;font-size:.8rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;margin-bottom:.9rem}
.eyebrow::before{content:"";width:1.4rem;height:3px;border-radius:2px;background:var(--kit-yellow)}
.dark-sec .eyebrow,.page-hero .eyebrow{color:var(--kit-blue)}
.light-sec .eyebrow{color:var(--kit-blue-deep)}

.sec-head{position:relative;max-width:660px;margin-bottom:3rem}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head.center .eyebrow{justify-content:center}
.sec-head h2{font-size:var(--fs-h2);margin-bottom:.8rem}
.sec-head p{font-size:1rem}
.dark-sec .sec-head p{color:var(--t-on-dark-mut)}
.light-sec .sec-head h2{color:var(--ink)}
.light-sec .sec-head p{color:var(--t-muted-light)}

/* 아웃라인 스트로크 대형 섹션 번호 (01~04) — 에디토리얼 고스트 */
.sec-no{
  display:block;position:relative;z-index:0;pointer-events:none;user-select:none;
  font-size:var(--fs-secno);font-weight:900;line-height:.9;letter-spacing:-.03em;
  font-variant-numeric:tabular-nums;
  color:var(--blue-ghost);
  margin-bottom:-.42em;      /* 아이브로/제목이 번호 하단에 겹치는 레이어드 심도 */
}
.light-sec .sec-no{color:var(--blue-ghost-deep)}
@supports (-webkit-text-stroke:1px #000){
  .sec-no{color:transparent;-webkit-text-stroke:1.3px rgba(0,169,206,.42)}
  .light-sec .sec-no{-webkit-text-stroke-color:rgba(0,90,150,.30)}
}
.sec-head>*:not(.sec-no){position:relative;z-index:1}

/* 화살표 텍스트 링크 */
.tlink{display:inline-flex;align-items:center;gap:.4rem;font-size:.88rem;font-weight:700;color:var(--kit-blue);transition:gap .2s}
.tlink:hover{gap:.7rem}
.light-sec .tlink{color:var(--kit-blue-deep)}

/* ── 4. 레이아웃 ───────────────────────────────────────────── */
.sec{padding:clamp(4.2rem,8vw,5.5rem) 0}
.light-sec{
  background:var(--mist-50);color:var(--t-on-light);
  background-image:radial-gradient(rgba(0,90,150,.06) 1px,transparent 1px);
  background-size:26px 26px;
}
.dark-sec{position:relative;background:linear-gradient(180deg,var(--kit-navy-950),var(--kit-navy-900) 30%,var(--kit-navy-900) 70%,var(--kit-navy-950));color:var(--t-on-dark)}

/* ── 5. 컴포넌트 ───────────────────────────────────────────── */

/* 5.1 버튼 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-weight:700;font-size:.95rem;padding:.8rem 1.6rem;border-radius:12px;border:1.5px solid transparent;cursor:pointer;transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s,border-color .25s,color .25s;font-family:var(--font)}
.btn svg{flex:none}
.btn-cyan{background:linear-gradient(120deg,var(--kit-blue),var(--cyan-hi));color:var(--kit-navy-950)}
.btn-cyan:hover{transform:translateY(-2px);box-shadow:0 6px 26px rgba(0,169,206,.45)}
.btn-ghost{border-color:rgba(159,206,231,.35);color:var(--t-on-dark);background:rgba(255,255,255,.03)}
.btn-ghost:hover{border-color:var(--kit-blue);background:rgba(0,169,206,.12);transform:translateY(-2px)}
.btn-deep{background:var(--kit-blue-deep);color:#fff}
.btn-deep:hover{background:var(--navy-700);transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,90,150,.3)}
.btn-line{border-color:var(--mist-200);color:var(--t-on-light);background:#fff}
.btn-line:hover{border-color:var(--kit-blue-deep);color:var(--kit-blue-deep);transform:translateY(-2px)}
.btn-sm{padding:.55rem 1.05rem;font-size:.85rem;border-radius:10px}

/* 5.2 칩 · 배지 */
.chip{display:inline-flex;align-items:center;gap:.4rem;font-size:.75rem;font-weight:800;padding:.3rem .85rem;border-radius:99px;width:fit-content}
.chip-open{background:#E2F5FA;color:#00647A}
.chip-full{background:rgba(0,169,206,.16);color:var(--blue-200);border:1px solid rgba(0,169,206,.35)}
.chip-mist{background:var(--mist-100);color:var(--t-muted-light);border:1px solid var(--mist-200)}
.chip-dark{background:rgba(0,169,206,.13);color:var(--blue-200);border:1px solid rgba(0,169,206,.22)}

/* 5.3 헤더 · 내비 (단일 마크업 — 데스크톱 내비가 그대로 모바일 패널로 변형) */
header{
  position:fixed;inset:0 0 auto 0;z-index:60;height:var(--header-h);
  background:rgba(6,28,48,.55);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(159,206,231,.10);
  transition:background .3s;
}
header.scrolled{background:rgba(6,28,48,.88)}
.nav{display:flex;align-items:center;gap:2rem;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:.85rem;flex:none}
.brand img{height:30px;width:auto}
.brand .svc{font-size:.92rem;font-weight:800;letter-spacing:-.01em;color:var(--t-on-dark);border-left:1px solid rgba(159,206,231,.3);padding-left:.85rem;line-height:1.2;white-space:nowrap}
.site-nav{display:flex;align-items:center;gap:.4rem;margin-left:auto}
.site-nav a:not(.btn){position:relative;font-size:.94rem;font-weight:600;color:var(--t-on-dark-mut);padding:.55rem .9rem;border-radius:9px;white-space:nowrap;transition:color .2s,background .2s}
.site-nav a:not(.btn):hover{color:#fff;background:rgba(0,169,206,.12)}
.site-nav a[aria-current="page"]{color:#fff}
.site-nav a[aria-current="page"]::after{content:"";position:absolute;left:.9rem;right:.9rem;bottom:.18rem;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--kit-blue),var(--cyan-hi))}
.site-nav .nav-login{margin-left:.5rem;flex:none}
.site-nav .nav-cta{flex:none}
#menu-btn{display:none;margin-left:auto;background:none;border:0;cursor:pointer;padding:.5rem;color:var(--t-on-dark)}
#menu-btn svg{display:block}
#menu-btn .x{display:none}
header.open #menu-btn .bars{display:none}
header.open #menu-btn .x{display:block}

/* 5.4 홈 히어로 (풀블리드) */
.hero{
  position:relative;min-height:92vh;display:flex;flex-direction:column;
  padding:calc(var(--header-h) + 4.5rem) 0 0;
  background:
    radial-gradient(900px 520px at 78% 18%, rgba(0,169,206,.16), transparent 62%),
    radial-gradient(700px 480px at 12% 88%, rgba(0,90,150,.28), transparent 65%),
    linear-gradient(178deg, var(--kit-navy-950) 0%, #072238 48%, var(--kit-navy-950) 100%);
  overflow:hidden;
}
.hero-body{position:relative;z-index:2;flex:1;display:flex;align-items:center;width:100%;padding-bottom:3.5rem}
/* 심도 레이어 1: 미세 격자 */
.hero-grid{
  position:absolute;inset:-6%;pointer-events:none;opacity:.5;
  background:
    repeating-linear-gradient(90deg, rgba(0,169,206,.05) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(0deg, rgba(0,169,206,.05) 0 1px, transparent 1px 72px);
  mask-image:radial-gradient(80% 80% at 60% 40%, #000 30%, transparent 100%);
  -webkit-mask-image:radial-gradient(80% 80% at 60% 40%, #000 30%, transparent 100%);
  will-change:transform;
}
/* 심도 레이어 2: 데이터 노드 SVG */
.hero-net{position:absolute;top:0;right:-4%;width:min(62vw,880px);height:100%;pointer-events:none;will-change:transform}
.hero-net svg{width:100%;height:100%}
.net-line{stroke:rgba(0,169,206,.28);stroke-width:1;stroke-dasharray:340;stroke-dashoffset:340;animation:draw 2.6s var(--ease) .3s forwards}
.net-node{fill:var(--cyan-hi);opacity:.85}
.net-node.big{filter:drop-shadow(0 0 6px rgba(0,168,228,.9))}
.net-node.pulse{animation:pulse 3.2s ease-in-out infinite}
.net-node.p2{animation-delay:1.1s}
.net-node.p3{animation-delay:2.2s}
.net-halo{fill:none;stroke:rgba(0,169,206,.35);opacity:0;animation:halo 4.5s ease-out infinite}
.net-halo.h2{animation-delay:1.6s}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes pulse{0%,100%{opacity:.5}50%{opacity:1}}
@keyframes halo{0%{transform:scale(.4);opacity:.6}70%{opacity:0}100%{transform:scale(1.8);opacity:0}}

.hero-inner{position:relative;z-index:2;max-width:720px}
.hero-badge{display:inline-flex;align-items:center;gap:.6rem;font-size:.82rem;font-weight:600;color:var(--blue-200);background:rgba(0,169,206,.10);border:1px solid rgba(0,169,206,.30);padding:.45rem 1.05rem;border-radius:99px;margin-bottom:1.6rem}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--kit-yellow);box-shadow:0 0 8px rgba(254,221,0,.7);flex:none}
.hero h1{font-size:var(--fs-h1);font-weight:900;color:#fff;margin-bottom:1.25rem;line-height:1.22}
.hero h1 em{font-style:normal;background:linear-gradient(100deg,var(--kit-blue) 10%,var(--cyan-hi) 55%,var(--blue-200));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{max-width:600px;font-size:1.08rem;color:var(--t-on-dark-mut);margin-bottom:2.3rem}
.hero-cta{display:flex;gap:.9rem;flex-wrap:wrap;margin-bottom:2.6rem}
.hero-aud{display:flex;gap:.55rem;flex-wrap:wrap;font-size:.8rem;color:var(--blue-200)}
.hero-aud span{border:1px solid rgba(159,206,231,.22);background:rgba(255,255,255,.02);padding:.32rem .9rem;border-radius:99px}

/* 5.5 데이터셋 무한 티커 (히어로 하단 스트립) */
.ticker{
  position:relative;z-index:2;padding:.95rem 0;
  border-top:1px solid rgba(159,206,231,.12);background:rgba(4,20,31,.45);
}
.ticker-clip{
  overflow:hidden;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
}
.ticker-track{display:flex;width:max-content;animation:ticker 36s linear infinite}
.ticker:hover .ticker-track,
.ticker:focus-within .ticker-track,
.ticker.paused .ticker-track{animation-play-state:paused}
.ticker-pause{
  position:absolute;right:.9rem;top:50%;transform:translateY(-50%);z-index:3;
  display:grid;place-items:center;width:2.1rem;height:2.1rem;border-radius:50%;
  border:1px solid rgba(159,206,231,.35);background:rgba(6,28,48,.78);color:var(--blue-200);
  cursor:pointer;transition:border-color .2s,color .2s;
}
.ticker-pause:hover{border-color:var(--kit-blue);color:#fff}
.ticker-pause .ico-play{display:none}
.ticker-pause[aria-pressed="true"] .ico-pause{display:none}
.ticker-pause[aria-pressed="true"] .ico-play{display:block}
html:not(.js) .ticker-pause{display:none}
.ticker-group{display:flex;align-items:center;gap:2.4rem;padding-right:2.4rem}
.tick{display:inline-flex;align-items:center;gap:.6rem;font-size:.85rem;font-weight:600;color:var(--blue-200);white-space:nowrap}
.tick i{font-style:normal;font-size:.67rem;font-weight:800;color:var(--kit-blue);border:1px solid rgba(0,169,206,.4);padding:.13rem .5rem;border-radius:99px;letter-spacing:.02em}
.tick::after{content:"";width:5px;height:5px;border-radius:50%;background:rgba(0,169,206,.55);margin-left:2.4rem}
@keyframes ticker{to{transform:translateX(-50%)}}

/* 5.6 서브페이지 히어로 (컴팩트 다크) */
.page-hero{
  position:relative;overflow:hidden;
  padding:calc(var(--header-h) + 4rem) 0 3.2rem;
  background:
    radial-gradient(760px 420px at 82% 0%, rgba(0,169,206,.15), transparent 62%),
    linear-gradient(172deg, var(--kit-navy-950) 0%, #072238 60%, var(--kit-navy-950) 100%);
}
.page-hero .wrap{position:relative;z-index:2}
.page-hero h1{font-size:clamp(1.9rem,1.1rem + 2.8vw,2.9rem);color:#fff;margin-bottom:.9rem}
.page-hero .lead{max-width:660px;font-size:1.02rem;color:var(--t-on-dark-mut)}

/* 5.7 핵심 수치 */
.stats{position:relative;padding:0 0 4.5rem;background:var(--kit-navy-950)}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:1.1rem}
.stat{
  position:relative;background:var(--glass);border:1px solid var(--line-dark);
  border-radius:var(--r-md);padding:1.7rem 1.6rem 1.5rem;overflow:hidden;
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  transition:transform .3s var(--ease),border-color .3s,box-shadow .3s;
}
.stat::before{content:"";position:absolute;inset:0 auto auto 0;width:100%;height:2px;background:linear-gradient(90deg,var(--kit-blue),transparent 70%)}
.stat:hover{transform:translateY(-4px);border-color:rgba(0,169,206,.45);box-shadow:0 14px 34px rgba(0,169,206,.12)}
.stat b{display:flex;align-items:baseline;gap:.25rem;font-size:2.35rem;font-weight:900;letter-spacing:-.03em;color:#fff;line-height:1.1;margin-bottom:.45rem;font-variant-numeric:tabular-nums}
.stat b .unit{font-size:1.05rem;font-weight:700;color:var(--kit-blue)}
.stat span{display:block;font-weight:700;font-size:.94rem;color:var(--t-on-dark)}
.stat small{display:block;font-size:.78rem;color:var(--t-on-dark-mut);margin-top:.15rem}

/* 5.8 접근 경로 카드 (라이트/다크 페어) */
.access-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.6rem}
.acard{border-radius:var(--r-lg);padding:2.4rem 2.2rem;display:flex;flex-direction:column;transition:transform .3s var(--ease),box-shadow .3s var(--ease)}
.acard:hover{transform:translateY(-5px)}
.acard.open-card{background:#fff;border:1px solid var(--mist-200);box-shadow:var(--shadow-soft)}
.acard.open-card:hover{box-shadow:0 18px 44px rgba(6,28,48,.13)}
.acard.full-card{
  position:relative;color:var(--t-on-dark);overflow:hidden;
  background:linear-gradient(155deg,var(--kit-navy-900),var(--kit-navy-950) 75%);
  border:1px solid rgba(0,169,206,.35);
}
.acard.full-card::before{content:"";position:absolute;top:-70px;right:-70px;width:240px;height:240px;border-radius:50%;background:radial-gradient(circle,rgba(0,169,206,.28),transparent 70%);pointer-events:none}
.acard.full-card:hover{box-shadow:var(--shadow-glow)}
.acard h3{font-size:1.35rem;margin:1.05rem 0 .6rem}
.acard.open-card h3{color:var(--ink)}
.acard.full-card h3{color:#fff}
.acard>p{font-size:.94rem;margin-bottom:1.3rem}
.acard.open-card>p{color:var(--t-muted-light)}
.acard.full-card>p{color:var(--t-on-dark-mut)}
.acard ul{margin-bottom:1.8rem;flex:1}
.acard li{position:relative;padding-left:1.7rem;margin:.5rem 0;font-size:.9rem}
.acard.open-card li{color:#2C4356}
.acard.full-card li{color:var(--t-on-dark)}
.acard li svg{position:absolute;left:0;top:.24em;width:1.05em;height:1.05em}
.acard .note{font-size:.8rem;margin-top:1rem;color:var(--t-on-dark-mut)}
.acard .note b{color:var(--kit-yellow);font-weight:700}

/* 5.9 데이터셋 카드 (다크 그리드) */
.ds-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.3rem}
.dcard{
  position:relative;display:flex;flex-direction:column;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-dark);border-radius:var(--r-md);
  padding:1.7rem 1.6rem;overflow:hidden;
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  transition:transform .3s var(--ease),border-color .3s,box-shadow .3s,background .3s;
}
.dcard::after{content:"";position:absolute;inset:auto 0 0 0;height:2px;background:linear-gradient(90deg,var(--kit-blue),var(--cyan-hi));transform:scaleX(0);transform-origin:left;transition:transform .35s var(--ease)}
.dcard:hover{transform:translateY(-5px);border-color:rgba(0,169,206,.5);background:rgba(0,169,206,.06);box-shadow:0 16px 40px rgba(0,169,206,.14)}
.dcard:hover::after{transform:scaleX(1)}
.dcard .tags{display:flex;gap:.4rem;flex-wrap:wrap;margin-bottom:.95rem}
.dcard .tags span{font-size:.72rem;font-weight:700;color:var(--blue-200);background:rgba(0,169,206,.13);border:1px solid rgba(0,169,206,.22);padding:.22rem .7rem;border-radius:99px}
.dcard h3{font-size:1.08rem;color:#fff;margin-bottom:.5rem}
.dcard p{font-size:.87rem;color:var(--t-on-dark-mut);flex:1;margin-bottom:1.35rem}
.dcard .actions{display:flex;gap:.55rem}
.ds-more{text-align:center;margin-top:2.6rem}

/* 5.11 이용 절차 티저 (홈 4카드) */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem;counter-reset:step}
.step{
  position:relative;background:#fff;border:1px solid var(--mist-200);border-radius:var(--r-md);
  padding:1.8rem 1.5rem;box-shadow:var(--shadow-soft);
  transition:transform .3s var(--ease),box-shadow .3s,border-color .3s;
}
.step:hover{transform:translateY(-4px);border-color:rgba(0,90,150,.35);box-shadow:0 16px 38px rgba(6,28,48,.12)}
.step .num{
  counter-increment:step;display:grid;place-items:center;width:2.6rem;height:2.6rem;border-radius:12px;
  background:linear-gradient(135deg,var(--kit-blue-deep),#0077A2);color:#fff;
  font-weight:900;font-size:1.05rem;margin-bottom:1.1rem;
  box-shadow:0 6px 16px rgba(0,90,150,.28);
}
.step .num::before{content:counter(step,decimal-leading-zero)}
.step h3{font-size:1rem;color:var(--ink);margin-bottom:.45rem}
.step p{font-size:.86rem;color:var(--t-muted-light)}
.steps-note{display:flex;justify-content:center;align-items:center;gap:.55rem;flex-wrap:wrap;text-align:center;margin-top:2.2rem;font-size:.9rem;color:var(--t-muted-light)}
.steps-note .mark{display:inline-block;width:.55rem;height:.55rem;border-radius:2px;background:var(--kit-yellow);flex:none}
.steps-cta{text-align:center;margin-top:1.6rem}

/* 5.12 스티키 스텝 스크롤 스파이 (guide.html 4단계 타임라인) */
.stepspy{display:grid;grid-template-columns:5fr 6fr;gap:clamp(2rem,5vw,4.5rem);align-items:start}
.stepspy-side .sticky{position:sticky;top:calc(var(--header-h) + 2.2rem)}
.step-meter{display:flex;align-items:center;gap:1rem;margin:1.6rem 0 0}
.step-meter .now{font-size:2.4rem;font-weight:900;letter-spacing:-.03em;color:var(--cyan-hi);font-variant-numeric:tabular-nums;line-height:1}
.step-meter .total{font-size:1rem;font-weight:700;color:var(--t-on-dark-mut)}
.step-meter .bar{flex:1;max-width:180px;height:4px;border-radius:4px;background:rgba(255,255,255,.14);overflow:hidden}
.step-meter .bar i{display:block;height:100%;width:25%;border-radius:4px;background:linear-gradient(90deg,var(--kit-blue),var(--cyan-hi));transition:width .5s var(--ease)}
.steps-list{display:grid;gap:1.1rem;counter-reset:st}
.step-item{
  position:relative;background:rgba(255,255,255,.045);border:1px solid var(--line-dark);
  border-radius:var(--r-md);padding:1.55rem 1.6rem 1.55rem 4.4rem;
  transition:border-color .35s,background-color .35s,transform .3s var(--ease);
}
.step-item::before{
  counter-increment:st;content:"0" counter(st);position:absolute;left:1.45rem;top:1.55rem;
  font-size:1.02rem;font-weight:900;letter-spacing:-.02em;color:var(--t-on-dark-mut);
  font-variant-numeric:tabular-nums;transition:color .35s;
}
.step-item.active{background:rgba(0,169,206,.10);border-color:rgba(0,168,228,.5);transform:translateX(6px)}
.step-item.active::before{color:var(--cyan-hi)}
.step-item h3{font-size:1.03rem;color:#fff;margin-bottom:.35rem}
.step-item p{font-size:.87rem;color:var(--t-on-dark-mut);line-height:1.65}

/* 5.13 공지 리스트 + 신청 CTA */
.notice-sec{background:linear-gradient(180deg,var(--kit-navy-950),#07223A 55%,var(--navy-975))}
.notice-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:1.6rem;align-items:stretch}
.nlist{background:rgba(255,255,255,.03);border:1px solid var(--line-dark);border-radius:var(--r-lg);padding:.6rem 1.9rem;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.nlist article{padding:1.35rem 0;border-bottom:1px solid rgba(159,206,231,.09)}
.nlist article:last-child{border-bottom:0}
.nlist time,.nlist .soon{font-size:.76rem;font-weight:700;letter-spacing:.06em;color:var(--kit-blue)}
.nlist h3{font-size:.98rem;color:#fff;margin:.3rem 0 .35rem;font-weight:700}
.nlist p{font-size:.85rem;color:var(--t-on-dark-mut)}
.nlist .tlink{margin:1.1rem 0 1rem}
.apply-cta{
  position:relative;display:flex;flex-direction:column;justify-content:center;overflow:hidden;
  background:linear-gradient(150deg,var(--navy-800),var(--kit-navy-900) 60%);
  border:1px solid rgba(0,169,206,.4);border-radius:var(--r-lg);padding:2.4rem 2.2rem;
}
.apply-cta::before{content:"";position:absolute;inset:0 auto auto 0;width:100%;height:3px;background:linear-gradient(90deg,var(--kit-yellow) 0 18%,var(--kit-blue) 40%,transparent 90%)}
.apply-cta::after{content:"";position:absolute;bottom:-90px;right:-60px;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(0,168,228,.25),transparent 70%)}
.apply-cta h3{font-size:1.45rem;color:#fff;margin-bottom:.7rem}
.apply-cta p{font-size:.92rem;color:var(--t-on-dark-mut);margin-bottom:1.7rem;position:relative;z-index:1}
.apply-cta .btns{display:flex;gap:.7rem;flex-wrap:wrap;position:relative;z-index:1}
.apply-cta .sub{margin-top:1.2rem;font-size:.78rem;color:var(--t-on-dark-mut)}

/* 5.14 아코디언 (FAQ — details/summary, JS 불필요) */
.acc{border:1px solid var(--mist-200);border-radius:var(--r-md);background:#fff;margin-bottom:.8rem;overflow:hidden;box-shadow:var(--shadow-soft)}
.acc summary{display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:1.15rem 1.4rem;font-weight:700;font-size:.96rem;color:var(--ink);cursor:pointer;list-style:none;transition:background .2s}
.acc summary::-webkit-details-marker{display:none}
.acc summary:hover{background:var(--mist-50)}
.acc .acc-ico{flex:none;color:var(--kit-blue-deep);transition:transform .3s var(--ease)}
.acc[open] .acc-ico{transform:rotate(45deg)}
.acc .acc-body{padding:.15rem 1.4rem 1.25rem;font-size:.9rem;color:var(--t-muted-light);line-height:1.7}
/* 다크 섹션 변형 */
.dark-sec .acc{background:rgba(255,255,255,.04);border-color:var(--line-dark);box-shadow:none}
.dark-sec .acc summary{color:#fff}
.dark-sec .acc summary:hover{background:rgba(0,169,206,.07)}
.dark-sec .acc .acc-ico{color:var(--kit-blue)}
.dark-sec .acc .acc-body{color:var(--t-on-dark-mut)}

/* 5.15 폼 (apply.html — 라이트 섹션 기준) */
.field{display:flex;flex-direction:column;gap:.45rem;margin-bottom:1.15rem}
.field>label{font-weight:700;font-size:.9rem;color:var(--t-on-light)}
.field .req{color:var(--kit-blue-deep);font-weight:800}
.field .hint{font-size:.78rem;color:var(--t-muted-light)}
.input{
  width:100%;font-family:var(--font);font-size:.95rem;color:var(--t-on-light);
  background:#fff;border:1.5px solid var(--mist-200);border-radius:10px;padding:.7rem .95rem;
  transition:border-color .2s,box-shadow .2s;
}
.input:focus{outline:none;border-color:var(--kit-blue-deep);box-shadow:0 0 0 3px rgba(0,90,150,.22)}
.input::placeholder{color:var(--t-muted-light)}
textarea.input{min-height:130px;resize:vertical;line-height:1.6}
select.input{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--kit-blue-deep) 50%),linear-gradient(135deg,var(--kit-blue-deep) 50%,transparent 50%);background-position:calc(100% - 1.25rem) 50%,calc(100% - .95rem) 50%;background-size:.32rem .32rem;background-repeat:no-repeat;padding-right:2.4rem}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 1.2rem}
.checkline{display:flex;gap:.6rem;align-items:flex-start;font-size:.9rem;color:var(--t-muted-light);margin-bottom:.7rem}
.checkline input{margin-top:.25em;accent-color:var(--kit-blue-deep);width:1rem;height:1rem;flex:none}
.form-card{background:#fff;border:1px solid var(--mist-200);border-radius:var(--r-lg);padding:2.2rem 2rem;box-shadow:var(--shadow-soft)}

/* 5.16 비교표 (guide.html 샘플 vs 전체) */
.table-wrap{overflow-x:auto;border:1px solid var(--mist-200);border-radius:var(--r-md);background:#fff;box-shadow:var(--shadow-soft)}
.table{width:100%;min-width:560px;border-collapse:collapse;font-size:.9rem;color:var(--t-on-light)}
.table th,.table td{padding:.9rem 1.2rem;text-align:left;border-bottom:1px solid var(--mist-100)}
.table thead th{background:var(--mist-100);color:var(--ink);font-size:.84rem;letter-spacing:.02em}
.table tbody th[scope="row"]{font-weight:700;color:var(--ink);background:var(--mist-50);width:9.5rem}
.table tbody tr:last-child th,.table tbody tr:last-child td{border-bottom:0}
.table .ok{color:var(--kit-blue-deep);font-weight:700}
.table .no{color:var(--t-muted-light)}

/* 5.17 필터 바 · 검색 (datasets.html) */
.filter-bar{display:flex;gap:.5rem;flex-wrap:wrap;align-items:center}
.fchip{
  font-family:var(--font);font-size:.85rem;font-weight:700;color:var(--t-muted-light);
  background:#fff;border:1.5px solid var(--mist-200);border-radius:99px;padding:.45rem 1.05rem;
  cursor:pointer;transition:background .2s,border-color .2s,color .2s,transform .2s var(--ease);
}
.fchip:hover{border-color:var(--kit-blue);color:var(--kit-blue-deep);transform:translateY(-1px)}
.fchip[aria-pressed="true"]{background:linear-gradient(120deg,var(--kit-blue),var(--cyan-hi));border-color:transparent;color:var(--kit-navy-950)}
.search-box{position:relative;flex:1;min-width:200px;max-width:340px}
.search-box .input{padding-left:2.6rem}
.search-box>svg{position:absolute;left:.9rem;top:50%;transform:translateY(-50%);color:var(--kit-gray);pointer-events:none}

/* 5.18 푸터 */
footer{background:var(--navy-975);border-top:1px solid rgba(159,206,231,.08);padding:3.8rem 0 2.2rem;font-size:.86rem;color:var(--t-on-dark-mut)}
.f-grid{display:grid;grid-template-columns:2.1fr 1fr 1fr 1.3fr;gap:2.4rem;margin-bottom:2.6rem}
.f-brand img{height:28px;width:auto;margin-bottom:1.1rem}
.f-brand p{font-size:.85rem;max-width:340px}
.f-grid h2{color:#fff;font-size:.88rem;font-weight:700;margin-bottom:.85rem}
.f-grid nav a{display:block;margin:.42rem 0;transition:color .2s}
.f-grid nav a:hover{color:var(--kit-blue)}
.f-contact li{margin:.42rem 0;display:flex;gap:.55rem;align-items:flex-start}
.f-contact svg{flex:none;margin-top:.22em;color:var(--kit-blue)}
.f-bottom{border-top:1px solid rgba(159,206,231,.08);padding-top:1.5rem;display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;font-size:.78rem}
.f-bottom nav{display:flex;gap:1.3rem}
.f-bottom nav a:hover{color:var(--kit-blue)}

/* ── 6. 유틸리티 — 리빌 · 글로우 ───────────────────────────── */

/* 단일 요소 리빌: class="rv" */
.js .rv{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js .rv.in{opacity:1;transform:none}

/* 계단식 stagger: 부모에 data-stagger — 자식 수 제한 없음.
   딜레이는 site.js가 animation-delay(i*90ms)로 주입.
   애니메이션 기반이라 카드 자체의 호버 transition과 충돌하지 않음. */
.js [data-stagger]>*{opacity:0;transform:translateY(24px)}
.js [data-stagger].in>*{opacity:1;transform:none;animation:rise .6s var(--ease) backwards}
@keyframes rise{from{opacity:0;transform:translateY(24px)}}

/* 커서 추적 라디얼 글로우: 카드에 class="glow-track" + <span class="glow"> */
.glow-track{position:relative}
.glow-track .glow{
  position:absolute;inset:0;pointer-events:none;opacity:0;border-radius:inherit;
  transition:opacity .35s;
  background:radial-gradient(300px circle at var(--mx,50%) var(--my,50%),rgba(0,169,206,.15),transparent 65%);
}
@media (hover:hover) and (pointer:fine){
  .glow-track:hover .glow{opacity:1}
}

/* 샘플 다운로드 형식 팝오버 (body 직속, fixed — 카드 overflow:hidden 회피) */
.sample-pop{
  position:fixed;z-index:80;min-width:238px;display:flex;flex-direction:column;gap:2px;
  background:var(--kit-navy-900);border:1px solid rgba(0,169,206,.4);border-radius:14px;
  padding:.5rem;box-shadow:0 14px 44px rgba(4,20,35,.55);
}
.sample-pop .sp-title{font-size:.72rem;font-weight:500;color:var(--t-on-dark-mut);padding:.45rem .65rem .35rem}
.sample-pop a{display:flex;flex-direction:column;gap:.12rem;font-weight:800;font-size:.92rem;color:var(--t-on-dark);padding:.6rem .65rem;border-radius:9px;transition:background .15s}
.sample-pop a:hover,.sample-pop a:focus-visible{background:rgba(0,169,206,.14)}
.sample-pop a small{font-weight:500;font-size:.74rem;color:var(--t-on-dark-mut)}
.sample-pop .sp-browse{font-weight:600;font-size:.8rem;color:var(--kit-blue);border-top:1px solid var(--line-dark);border-radius:0 0 9px 9px;margin-top:2px;padding-top:.65rem}

/* 포털 로그인 모달 */
.login-overlay{
  position:fixed;inset:0;z-index:90;display:grid;place-items:center;padding:1.2rem;
  background:rgba(4,20,35,.7);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}
.login-modal{
  width:min(400px,100%);background:var(--kit-navy-900);border:1px solid rgba(0,169,206,.35);
  border-radius:var(--r-lg);padding:1.9rem 1.7rem;box-shadow:0 24px 70px rgba(4,20,35,.6);
}
.login-modal h2{font-size:1.25rem;color:#fff;margin-bottom:.4rem}
.login-modal .lm-sub{font-size:.84rem;color:var(--t-on-dark-mut);margin-bottom:1.2rem}
.login-modal .lm-sub a{color:var(--kit-blue);text-decoration:underline;text-underline-offset:3px}
.login-modal label{display:block;font-size:.8rem;font-weight:700;color:var(--t-on-dark);margin:.85rem 0 .3rem}
.login-modal input{
  width:100%;padding:.68rem .85rem;border-radius:10px;font-size:.95rem;color:#fff;
  background:rgba(255,255,255,.06);border:1px solid rgba(159,206,231,.25);font-family:var(--font);
}
.login-modal input:focus{outline:none;border-color:var(--kit-blue);box-shadow:0 0 0 3px rgba(0,169,206,.22)}
.login-modal .lm-err{font-size:.82rem;color:#FF9D8A;margin-top:.7rem}
.login-modal .lm-actions{display:flex;gap:.6rem;margin-top:1.3rem}
.login-modal .lm-actions .btn{flex:1;justify-content:center}

/* 로그인 후 사용자 메뉴 버튼 */
.user-menu-btn{display:inline-flex;align-items:center;gap:.42rem}
.user-menu-btn .un{max-width:9ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.auth-pop{min-width:216px}

/* 샘플 미보유 데이터셋 표시 (pointer-events 유지 — title 툴팁 노출) */
.btn.is-off{opacity:.42;cursor:not-allowed}
.btn.is-off:hover{transform:none}

/* ── 7. 모션 축소 존중 ─────────────────────────────────────── */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
  .js .rv,.js [data-stagger]>*{opacity:1 !important;transform:none !important;animation:none !important}
  .net-line{stroke-dashoffset:0 !important}
  .net-halo{display:none}
  .hero-grid,.hero-net{transform:none !important}
  .ticker{overflow-x:auto}
  .ticker-clip{-webkit-mask-image:none;mask-image:none;overflow:visible}
  .ticker-track{animation:none}
  .ticker-pause{display:none}
  .ticker-group[aria-hidden="true"]{display:none}
  .glow-track .glow{display:none}
  .step-item.active{transform:none}
}

/* ── 8. 반응형 ─────────────────────────────────────────────── */
@media (max-width:1240px){
  /* 로그인 상태(버튼 2개가 더 넓음) 전용 압축 */
  .nav.authed .svc{display:none}
  .nav.authed .nav-fb{padding:.55rem .8rem}
  .nav.authed .user-menu-btn{padding:.55rem .7rem}
  .nav.authed .user-menu-btn .un{max-width:6ch}
}
@media (max-width:1100px){
  /* 921~1100px: 데스크톱 내비 유지를 위한 압축 (링크 줄바꿈 방지) */
  .brand .svc{display:none}
  .brand img{height:28px}   /* 브리프 최소치 준수 */
  .nav{gap:1.2rem}
  .site-nav a:not(.btn){padding:.55rem .6rem;font-size:.88rem}
  .site-nav .nav-login,.site-nav .nav-cta,.site-nav .nav-fb,.site-nav .user-menu-btn{padding:.55rem .8rem}
}
@media (max-width:1000px){
  .ds-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:920px){
  /* 단일 내비 마크업 → 모바일 패널 변형 (transform+opacity+visibility 트랜지션) */
  #menu-btn{display:block}
  .js .site-nav{
    position:fixed;top:var(--header-h);left:0;right:0;z-index:59;
    display:flex;flex-direction:column;align-items:stretch;gap:.2rem;
    background:rgba(6,28,48,.97);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
    border-bottom:1px solid var(--line-dark);padding:1rem 1.5rem 1.5rem;margin:0;
    max-height:calc(100vh - var(--header-h));
    max-height:calc(100dvh - var(--header-h));
    overflow-y:auto;
    transform:translateY(-10px);opacity:0;visibility:hidden;
    transition:transform .3s var(--ease),opacity .3s,visibility .3s;
  }
  .js header.open .site-nav{transform:none;opacity:1;visibility:visible}
  .js .site-nav a:not(.btn){font-size:1rem;font-weight:600;color:var(--t-on-dark);padding:.85rem .4rem;border-radius:0;border-bottom:1px solid rgba(159,206,231,.08)}
  .js .site-nav a[aria-current="page"]{color:var(--kit-blue)}
  .js .site-nav a[aria-current="page"]::after{content:none}
  .js .site-nav .nav-login{margin:1.2rem 0 0;border-bottom:0}
  .js .site-nav .nav-cta{margin:.6rem 0 0;border-bottom:0}
  .js .site-nav .nav-fb{margin:1.2rem 0 0;border-bottom:0}
  .js .site-nav .user-menu-btn{margin:.6rem 0 0;border-bottom:0}
  /* JS 미동작 폴백: 내비를 인라인으로 그대로 노출 */
  html:not(.js) header{position:static;height:auto}
  html:not(.js) .nav{flex-wrap:wrap;height:auto;padding:.7rem 0;gap:.6rem 1rem}
  html:not(.js) .site-nav{flex-wrap:wrap}
  html:not(.js) #menu-btn{display:none}

  .stats .wrap{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .stepspy{grid-template-columns:1fr}
  .stepspy-side .sticky{position:static}
  .step-meter{display:none}
  .form-grid{grid-template-columns:1fr}
}
@media (max-width:880px){
  .access-grid{grid-template-columns:1fr}
  .notice-grid{grid-template-columns:1fr}
  .f-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .ds-grid{grid-template-columns:1fr}
}
@media (max-width:540px){
  .steps{grid-template-columns:1fr}
  .f-grid{grid-template-columns:1fr}
}
@media (max-width:480px){
  /* 360~480px: 헤더 넘침 방지 — 로고는 브리프 최소 높이 28px 유지 */
  .wrap{padding:0 1rem}
  .nav{gap:1rem}
  .brand img{height:28px}
  .stats .wrap{grid-template-columns:1fr}
}