/* ============================================================
   KRIFD 디자인 시스템 v1 (2026. 8. 24. 확정안)
   CI 준수: 학회 고유색 네이비·스카이 유지 (명함 벡터 실측값)
   원칙: 그라데이션·발광·과한 그림자 금지. 얇은 괘선, 사진은 네이비 베일.
   ============================================================ */
:root{
  --navy:#286093;         /* 학회 고유색 */
  --sky:#5AA6DB;          /* 보조색 */
  --deep:#0E213C;         /* 어두운 색면 (행사안내문과 동일 계열) */
  --ink:#16181C;
  --gray:#6B7078;
  --line:#D8DADE;
  --soft:#F5F6F8;
  --bg:#FFFFFF;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,
    "Apple SD Gothic Neo","Malgun Gothic",sans-serif;
  color:var(--ink);background:var(--bg);
  font-size:16px;line-height:1.7;letter-spacing:-.01em;word-break:keep-all;overflow-wrap:break-word;
  -webkit-text-size-adjust:100%;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}

/* ── 헤더 ── */
header.site{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:28px;height:64px}
.nav .logo img{height:34px;width:auto}
.nav ul{display:flex;gap:26px;list-style:none;margin-left:auto}
.nav ul a{font-size:15px;font-weight:600;color:var(--ink)}
.nav ul a:hover{color:var(--navy)}
.btn{display:inline-block;font-weight:700;font-size:15px;border-radius:6px;
  padding:11px 22px;border:1.5px solid transparent;cursor:pointer;transition:filter .15s}
.btn:active{filter:brightness(.92)}
.btn-navy{background:var(--navy);color:#fff}
.btn-white{background:#fff;color:var(--deep)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.nav .btn{padding:9px 18px;font-size:14px}
.menu-toggle{display:none}

/* ── 히어로 ── */
.hero{position:relative;background:var(--deep);color:#fff;overflow:hidden}
.hero .photo{position:absolute;inset:0;background:url(assets/hero-situation-1924.jpg) center 42%/cover no-repeat}
.hero .veil{position:absolute;inset:0;
  background:rgba(14,33,60,.70)}
.hero .wrap{position:relative;padding-top:96px;padding-bottom:96px}
.eyebrow{font-size:14px;font-weight:600;letter-spacing:.06em;color:rgba(255,255,255,.85)}
.eyebrow b{color:#fff}
.hero h1{font-size:clamp(34px,5.2vw,58px);font-weight:800;letter-spacing:-.03em;
  line-height:1.22;margin:18px 0 10px}
.hero .accent{font-size:clamp(19px,2.4vw,26px);font-weight:700;letter-spacing:-.01em}
.hero .accent .ai{color:var(--sky)}
.hero p.lede{margin:22px 0 0;max-width:560px;font-size:16.5px;color:rgba(255,255,255,.92)}
.hero .cta{margin-top:34px;display:flex;gap:12px;flex-wrap:wrap}
.hero .credit{position:absolute;right:18px;bottom:12px;font-size:11px;color:rgba(255,255,255,.55)}

/* ── 행사 띠 ── */
.event{background:var(--soft);border-bottom:1px solid var(--line)}
.event .wrap{display:flex;align-items:center;gap:18px;padding-top:20px;padding-bottom:20px;flex-wrap:wrap}
.event .dday{background:var(--navy);color:#fff;font-weight:800;font-size:14px;
  border-radius:6px;padding:7px 12px;white-space:nowrap}
.event .what{font-weight:700;font-size:16.5px}
.event .when{color:var(--gray);font-size:15px}
.event a.more{margin-left:auto;font-weight:700;color:var(--navy);font-size:15px;white-space:nowrap}

/* ── 섹션 공통 ── */
section .wrap{padding-top:84px;padding-bottom:84px}
.sec-eyebrow{font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--navy)}
h2.sec{font-size:clamp(24px,3vw,32px);font-weight:800;letter-spacing:-.02em;margin:10px 0 14px}
p.sec-sub{color:var(--gray);max-width:640px}

/* ── 4대 기능 카드 ── */
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:40px}
.card{border:1px solid var(--line);border-radius:8px;padding:26px 22px;background:#fff}
.card .no{font-size:13px;font-weight:800;color:var(--sky);letter-spacing:.08em}
.card h3{font-size:18px;font-weight:800;margin:10px 0 8px}
.card p{font-size:14.5px;color:var(--gray);line-height:1.65}

/* ── 소식 ── */
.news{background:var(--soft)}
.news-list{margin-top:32px;border-top:2px solid var(--ink)}
.news-list a{display:flex;gap:18px;align-items:baseline;padding:18px 4px;
  border-bottom:1px solid var(--line);font-size:16px}
.news-list a:hover{background:#fff}
.news-list .date{font-variant-numeric:tabular-nums;color:var(--gray);font-size:14px;
  white-space:nowrap;width:96px}
.news-list .tag{font-size:12.5px;font-weight:700;color:var(--navy);
  border:1px solid var(--navy);border-radius:99px;padding:2px 10px;white-space:nowrap}
.news-list .t{font-weight:600}

/* ── 신뢰(거버넌스) ── */
.gov .grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:40px}
.gov .card h3{margin-top:0}
.gov .card .link{display:inline-block;margin-top:14px;font-weight:700;color:var(--navy);font-size:14.5px}
.gov .meta{margin-top:36px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13.5px;color:var(--gray)}

/* ── 가입 CTA ── */
.join{background:var(--deep);color:#fff}
.join .wrap{padding-top:72px;padding-bottom:72px;text-align:center}
.join h2{font-size:clamp(22px,3vw,30px);font-weight:800;letter-spacing:-.02em}
.join p{margin:14px auto 30px;max-width:560px;color:rgba(255,255,255,.85)}

/* ── 푸터 ── */
footer.site{background:#0A1729;color:rgba(255,255,255,.78);font-size:14px}
footer .wrap{padding-top:48px;padding-bottom:48px;display:flex;gap:32px;flex-wrap:wrap;align-items:flex-start}
footer img{height:30px;width:auto;opacity:.95}
footer .info{line-height:1.9}
footer .legal{margin-left:auto;text-align:right;line-height:1.9}
footer a{color:rgba(255,255,255,.78)}
footer a:hover{color:#fff}
footer .fine{color:rgba(255,255,255,.45);font-size:12.5px;margin-top:8px}

/* ── 서브페이지 ── */
.sub-hero{background:var(--deep);color:#fff}
.sub-hero .wrap{padding-top:64px;padding-bottom:56px}
.crumb{font-size:13.5px;color:rgba(255,255,255,.65)}
.sub-hero h1{font-size:clamp(28px,3.6vw,40px);font-weight:800;letter-spacing:-.02em;margin-top:12px}
.prose{max-width:760px}
.prose .wrap{padding-top:72px;padding-bottom:40px}
.prose p{margin:0 0 22px;font-size:16.5px;color:#2A2D33}
.prose .sign{margin-top:36px;font-size:17px;font-weight:700}
.prose .sign b{font-size:19px;letter-spacing:.14em;margin-left:6px}
.vmv{background:var(--soft)}
.vmv .grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:36px}
.vmv .en{font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--sky)}

@media (max-width:900px){
  .grid4,.gov .grid3,.vmv .grid3{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .nav ul{display:none}
  .nav .btn{display:none}
  .menu-toggle{display:block;margin-left:auto;background:none;border:0;font-size:22px;color:var(--ink)}
  .nav .btn{margin-left:0}
  .hero .wrap{padding-top:72px;padding-bottom:72px}
  .grid4,.gov .grid3,.vmv .grid3{grid-template-columns:1fr}
  .event .wrap{gap:10px}
  .event a.more{margin-left:0}
  footer .legal{margin-left:0;text-align:left}
  .news-list .date{width:auto}
  .news-list a{flex-wrap:wrap;gap:8px}
}

/* ============================================================
   v2: 학회 기관 사이트 문법 (SFPE·ASPA·국내 학회 관례 반영)
   포스터형 히어로 폐기. 정체성 한 줄 + 행사 카드, 바로가기,
   공지·일정 2단. 영문 눈썹 라벨과 번호 카드 제거.
   ============================================================ */
.utility{background:var(--deep);color:rgba(255,255,255,.75);font-size:12.5px}
.utility .wrap{display:flex;gap:18px;height:34px;align-items:center}
.utility .right{margin-left:auto;display:flex;gap:16px}
.utility a:hover{color:#fff}

.hero2{position:relative;background:var(--deep);color:#fff;overflow:hidden}
.hero2 .photo{position:absolute;inset:0;background:url(assets/hero-situation-1924.jpg) center 42%/cover no-repeat}
.hero2 .veil{position:absolute;inset:0;background:rgba(14,33,60,.72)}
.hero2 .wrap{position:relative;display:flex;gap:48px;align-items:center;
  padding-top:64px;padding-bottom:64px}
.hero2 .id{flex:1;min-width:0}
.hero2 .org{font-size:14px;font-weight:600;color:rgba(255,255,255,.8)}
.hero2 h1{font-size:clamp(26px,3.4vw,38px);font-weight:800;letter-spacing:-.02em;
  line-height:1.35;margin:14px 0 12px}
.hero2 .tag{font-size:16px;color:rgba(255,255,255,.9)}
.hero2 .tag .ai{color:var(--sky);font-weight:700}
.hero2 .cta{margin-top:26px;display:flex;gap:10px;flex-wrap:wrap}
.hero2 .credit{position:absolute;right:16px;bottom:10px;font-size:11px;color:rgba(255,255,255,.5)}

.event-card{width:340px;flex:none;background:#fff;color:var(--ink);
  border-top:4px solid var(--navy);border-radius:6px;padding:24px 24px 20px;
  box-shadow:0 2px 10px rgba(0,0,0,.18)}
.event-card .kind{font-size:12.5px;font-weight:700;color:var(--navy);letter-spacing:.04em}
.event-card h3{font-size:18.5px;font-weight:800;line-height:1.4;margin:8px 0 12px}
.event-card .meta{font-size:14px;color:var(--gray);line-height:1.75}
.event-card .foot{display:flex;align-items:center;margin-top:16px;padding-top:14px;
  border-top:1px solid var(--line)}
.event-card .dday{background:var(--navy);color:#fff;font-weight:800;font-size:13px;
  border-radius:5px;padding:5px 10px}
.event-card .more{margin-left:auto;font-weight:700;color:var(--navy);font-size:14.5px}

.quick{border-bottom:1px solid var(--line)}
.quick .wrap{display:grid;grid-template-columns:repeat(6,1fr);padding-top:0;padding-bottom:0}
.quick a{display:block;text-align:center;padding:18px 6px;font-size:15px;font-weight:700;
  border-left:1px solid var(--line)}
.quick a:last-child{border-right:1px solid var(--line)}
.quick a:hover{color:var(--navy);background:var(--soft)}

h2.plain{font-size:21px;font-weight:800;letter-spacing:-.01em;
  padding-bottom:10px;border-bottom:2px solid var(--navy);margin-bottom:4px}
h2.plain small{font-weight:600;font-size:13.5px;color:var(--gray);margin-left:10px}

.duo .wrap{display:grid;grid-template-columns:1fr 340px;gap:44px;
  padding-top:64px;padding-bottom:64px}
.duo .news-list{margin-top:0;border-top:0}
.duo .more-link{display:inline-block;margin-top:14px;font-size:14px;font-weight:700;color:var(--navy)}
.sched{background:var(--soft);border:1px solid var(--line);border-radius:6px;padding:20px 22px}
.sched h3{font-size:16px;font-weight:800;padding-bottom:10px;border-bottom:2px solid var(--navy)}
.sched ul{list-style:none;margin-top:4px}
.sched li{display:flex;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);font-size:14.5px}
.sched li:last-child{border-bottom:0}
.sched .d{font-weight:800;color:var(--navy);white-space:nowrap;font-variant-numeric:tabular-nums}

.intro{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.intro .wrap{display:grid;grid-template-columns:1fr 300px;gap:44px;
  padding-top:64px;padding-bottom:64px;align-items:start}
.intro p{margin-top:18px;color:#2A2D33;max-width:640px}
.intro .links{display:flex;flex-direction:column;gap:10px;margin-top:6px}
.intro .links a{display:flex;justify-content:space-between;align-items:center;background:#fff;
  border:1px solid var(--line);border-radius:6px;padding:14px 18px;font-weight:700;font-size:15px}
.intro .links a:hover{border-color:var(--navy);color:var(--navy)}
.intro .links .arr{color:var(--navy)}

.govline .wrap{padding-top:64px;padding-bottom:64px}
.govline ul{list-style:none;margin-top:18px;display:flex;flex-wrap:wrap;gap:0}
.govline li{flex:1;min-width:200px;border-left:1px solid var(--line);padding:4px 22px}
.govline li:first-child{border-left:0;padding-left:0}
.govline h3{font-size:16px;font-weight:800}
.govline p{font-size:14px;color:var(--gray);margin:6px 0 8px}
.govline a{font-weight:700;color:var(--navy);font-size:14px}
.govline .meta{margin-top:28px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13.5px;color:var(--gray)}

@media (max-width:900px){
  .hero2 .wrap{flex-direction:column;align-items:stretch;gap:28px}
  .event-card{width:100%}
  .quick .wrap{grid-template-columns:repeat(3,1fr)}
  .quick a:nth-child(n+4){border-top:1px solid var(--line)}
  .duo .wrap,.intro .wrap{grid-template-columns:1fr}
}
@media (max-width:640px){
  .utility{display:none}
  .quick .wrap{grid-template-columns:repeat(2,1fr)}
}

/* ── 사이트 공지 배너 (전 페이지 공통) ── */
.topbar{background:var(--deep);color:#fff;position:relative}
.topbar .wrap{display:flex;align-items:center;gap:12px;padding-top:9px;padding-bottom:9px;
  font-size:13.5px}
.topbar .dday{background:var(--sky);color:var(--deep);font-weight:800;font-size:12px;
  border-radius:99px;padding:2px 10px;flex:none}
.topbar strong{font-weight:700}
.topbar a.more{margin-left:auto;font-weight:700;color:#fff;text-decoration:underline;
  text-underline-offset:3px;white-space:nowrap;flex:none}
.topbar button.close{background:none;border:0;color:rgba(255,255,255,.6);font-size:16px;
  cursor:pointer;line-height:1;padding:0 0 0 8px;flex:none}
.topbar button.close:hover{color:#fff}
@media (max-width:640px){
  .topbar .wrap{font-size:12.5px;flex-wrap:wrap}
  .topbar strong{width:100%;order:2}
  .topbar a.more{order:3}
}

/* ── 서브페이지 공통 목록형(연혁·공지) ── */
.timeline{margin:28px 0}
.timeline li{display:flex;gap:20px;padding:16px 0;border-bottom:1px solid var(--line)}
.timeline .y{flex:none;width:96px;font-weight:800;color:var(--navy);font-size:15px}
.timeline .t{font-size:15.5px}
.notice-list{margin-top:24px;border-top:2px solid var(--ink)}
.notice-list a{display:flex;gap:16px;align-items:baseline;padding:18px 4px;
  border-bottom:1px solid var(--line)}
.notice-list a:hover{background:var(--soft)}
.notice-list .date{color:var(--gray);font-size:13.5px;white-space:nowrap;width:96px;
  font-variant-numeric:tabular-nums}
.notice-list .tag{font-size:12px;font-weight:700;color:var(--navy);border:1px solid var(--navy);
  border-radius:99px;padding:2px 9px;white-space:nowrap}
.notice-list .t{font-weight:600;font-size:15.5px}

/* ── 표(정관 요약·연혁 등) ── */
.infotable{width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px}
.infotable th{width:150px;text-align:left;padding:12px 16px;background:var(--soft);
  font-weight:700;border-top:1px solid var(--line);vertical-align:top}
.infotable td{padding:12px 16px;border-top:1px solid var(--line);vertical-align:top}

/* ── 준비중 안내 ── */
.pending{background:var(--soft);border:1px dashed var(--line);border-radius:8px;
  padding:20px 22px;margin:24px 0;font-size:14.5px;color:var(--gray)}
.pending b{color:var(--navy)}

/* ── 프로그램 표 (행사 페이지) ── */
.program{margin:24px 0;border-top:2px solid var(--ink)}
.program .row{display:flex;gap:18px;padding:14px 4px;border-bottom:1px solid var(--line)}
.program .time{flex:none;width:88px;font-weight:800;color:var(--navy);font-size:14px;
  font-variant-numeric:tabular-nums}
.program .who{font-weight:700;font-size:15px}
.program .what{color:var(--gray);font-size:13.5px;margin-top:2px}
.program .part{background:var(--soft);font-weight:800;color:var(--navy)}

/* ── 임원 카드 ── */
.person{display:flex;gap:14px;align-items:baseline;padding:16px 0;border-bottom:1px solid var(--line)}
.person .role{flex:none;width:100px;font-weight:800;color:var(--navy);font-size:14px}
.person .name{font-weight:700;font-size:16px}
.person .org{color:var(--gray);font-size:13.5px;margin-left:8px}

/* ── 창립 발대식 팝업 공지 (전 페이지 공통) ── */
.popup-overlay{position:fixed;inset:0;background:rgba(10,20,35,.6);z-index:100;
  display:flex;align-items:center;justify-content:center;padding:20px}
.popup-overlay.hide{display:none}
.popup-box{background:#fff;width:100%;max-width:420px;border-radius:12px;overflow:hidden;
  box-shadow:0 20px 60px rgba(0,0,0,.35)}
.popup-box .art{position:relative;height:180px;background-size:cover;background-position:center 30%}
.popup-box .art::after{content:"";position:absolute;inset:0;background:rgba(14,33,60,.66)}
.popup-box .art .txt{position:absolute;left:20px;right:20px;bottom:16px;color:#fff;z-index:1}
.popup-box .art .eyebrow{font-size:12px;font-weight:700;letter-spacing:.02em;opacity:.9}
.popup-box .art h3{font-size:22px;font-weight:800;letter-spacing:-.02em;margin-top:6px;line-height:1.3}
.popup-box .x{position:absolute;top:10px;right:12px;z-index:2;background:rgba(0,0,0,.35);
  color:#fff;border:0;width:30px;height:30px;border-radius:99px;font-size:16px;cursor:pointer;
  line-height:1}
.popup-box .x:hover{background:rgba(0,0,0,.55)}
.popup-box .body{padding:20px 22px 16px}
.popup-box .row{display:flex;gap:10px;font-size:14px;padding:6px 0;color:var(--ink)}
.popup-box .row b{width:44px;flex:none;color:var(--gray);font-weight:600}
.popup-box .cta{display:flex;gap:10px;margin-top:14px}
.popup-box .cta a{flex:1;text-align:center;background:var(--navy);color:#fff;font-weight:700;
  font-size:14.5px;padding:12px 0;border-radius:7px}
.popup-box .foot{display:flex;align-items:center;justify-content:space-between;
  padding:12px 22px;border-top:1px solid var(--line);font-size:12.5px;color:var(--gray)}
.popup-box .foot label{display:flex;align-items:center;gap:6px;cursor:pointer}
.popup-box .foot button{background:none;border:0;color:var(--gray);font-size:12.5px;
  cursor:pointer;text-decoration:underline;text-underline-offset:2px}