/* ==========================================================
   HUFS MAPI — base
   ========================================================== */
:root{
  --black:#000000;
  --sheet:#0c0d10;
  --sheet-alt:#15171c;
  --accent:#014D9A;
  --blue-900:var(--accent);
  --blue-500:var(--accent);
  --ink:#f4f4f2;
  --ink-soft:#a7abb8;
  --ink-faint:#6d7180;
  --line:rgba(255,255,255,.09);
  --radius-lg:32px;
  --radius-md:18px;
  --radius-sm:12px;
  --wrap:1180px;
  --ff:'Pretendard', -apple-system, BlinkMacSystemFont, 'Malgun Gothic', sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--ff);
  color:var(--ink);
  background:var(--black);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none;margin:0;padding:0}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
svg{fill:currentColor}
.mobile-only{display:none}

/* ---------- page loader ---------- */
.page-loader{
  position:fixed;inset:0;z-index:9999;
  background:var(--black);
  display:flex;align-items:center;justify-content:center;
  transition:opacity .5s ease, visibility .5s ease;
}
.page-loader.is-hidden{opacity:0;visibility:hidden;pointer-events:none}
.loader-mark{display:flex;gap:6px;font-size:15px;letter-spacing:.3em;color:var(--blue-500);font-weight:700}
.loader-mark span{opacity:0;animation:loaderPulse 1s ease-in-out infinite}
.loader-mark span:nth-child(2){animation-delay:.15s}
@keyframes loaderPulse{0%,100%{opacity:.25;transform:translateY(0)}50%{opacity:1;transform:translateY(-4px)}}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:500;
  background:transparent;
  transition:background .35s ease, box-shadow .35s ease, padding .35s ease;
  padding:24px 0;
}
.site-header.is-scrolled{
  background:rgba(5,5,5,.75);
  backdrop-filter:blur(12px);
  box-shadow:0 10px 30px -18px rgba(0,0,0,.7);
  padding:12px 0;
}
.header-inner{max-width:1320px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;color:#fff}
.brand-logo{height:56px;width:auto;border-radius:8px}

.main-nav{display:flex;align-items:center;gap:36px}
.main-nav a{color:rgba(255,255,255,.82);font-size:14.5px;font-weight:600;letter-spacing:.02em;position:relative;padding:4px 0}
.main-nav a:not(.nav-cta)::after{
  content:'';position:absolute;left:0;bottom:-4px;width:0;height:2px;background:var(--blue-500);
  transition:width .25s ease;
}
.main-nav a:not(.nav-cta):hover{color:#fff}
.main-nav a:not(.nav-cta):hover::after{width:100%}
.nav-cta{
  background:var(--blue-900);color:#fff !important;
  padding:9px 18px;border-radius:999px;font-weight:700;
  box-shadow:0 8px 20px -8px rgba(1,77,154,.7);
}
.nav-cta:hover{background:var(--blue-500)}

.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav-toggle span{width:24px;height:2px;background:#fff;border-radius:2px;transition:transform .25s ease, opacity .25s ease}

/* ---------- scroll-snap page (home) ---------- */
.snap-page{scroll-snap-type:y mandatory}
.snap-section{
  scroll-snap-align:start;
  scroll-snap-stop:always;
  min-height:100vh;
  position:relative;
}
.snap-section[data-glide]{
  opacity:0;
  transform:translateY(56px);
  transition:opacity .9s cubic-bezier(.16,.8,.44,1), transform .9s cubic-bezier(.16,.8,.44,1);
}
.snap-section[data-glide].is-visible{
  opacity:1;
  transform:translateY(0);
}

/* ---------- hero ---------- */
.hero{
  --hero-image-bottom:220px;
  height:100vh;
  overflow:hidden;
  background:var(--black);
}
.hero-bg-image{
  position:absolute;inset:0 0 var(--hero-image-bottom);
  width:100%;height:calc(100% - var(--hero-image-bottom));
  object-fit:contain;
  object-position:center;
  background:#000;
}
.hero-overlay{
  position:absolute;inset:0 0 var(--hero-image-bottom);
  background:
    linear-gradient(180deg, rgba(0,0,0,.35) 0%, rgba(0,0,0,.05) 30%, rgba(0,0,0,.15) 60%, rgba(0,0,0,.25) 100%);
}
.hero-content{
  position:relative;z-index:1;height:100%;
  display:flex;flex-direction:column;align-items:center;justify-content:flex-end;
  padding-bottom:110px;text-align:center;color:#fff;
}
.hero-eyebrow{
  font-size:12.5px;font-weight:700;letter-spacing:.28em;
  color:rgba(255,255,255,.65);margin:0 0 14px;
}
.hero-tagline{
  font-size:clamp(18px,2.4vw,24px);
  font-weight:600;line-height:1.5;margin:0;
  color:#fff;
}

.scroll-cue{
  position:absolute;left:50%;bottom:34px;transform:translateX(-50%);
  z-index:1;display:flex;flex-direction:column;align-items:center;gap:10px;
  color:rgba(255,255,255,.6);
}
.scroll-cue span{font-size:10.5px;letter-spacing:.3em;font-weight:700}
.scroll-cue i{
  display:block;width:1px;height:34px;
  background:linear-gradient(to bottom, rgba(255,255,255,.9), transparent);
  position:relative;overflow:hidden;
}
.scroll-cue i::after{
  content:'';position:absolute;left:0;top:-34px;width:100%;height:34px;
  background:var(--blue-500);
  animation:scrollCue 1.8s ease infinite;
}
@keyframes scrollCue{0%{top:-34px}100%{top:34px}}

/* ---------- intro statement ---------- */
.intro{
  display:flex;align-items:center;justify-content:center;
  background:var(--black);
  padding:110px 0 60px;
}
.intro-inner{max-width:1120px;text-align:center;margin:0 auto}
.intro .eyebrow{font-size:13px;font-weight:700;letter-spacing:.2em;color:rgba(255,255,255,.65);margin:0 0 20px}
.intro-statement{
  font-size:clamp(24px,3.2vw,38px);font-weight:800;line-height:1.5;
  word-break:keep-all;overflow-wrap:break-word;
  color:#fff;margin:0 0 24px;
}
.intro-statement strong{color:var(--blue-500)}
.intro-lead{display:block;font-size:.94em;margin-bottom:8px}
.intro-title{display:block;text-wrap:balance}
.intro-ending{white-space:nowrap}
.intro-desc{font-size:16px;line-height:1.8;color:var(--ink-soft);margin:0;max-width:760px;margin-inline:auto;word-break:keep-all}

/* ---------- core values ---------- */
.values{
  display:flex;align-items:center;justify-content:center;
  background:var(--black);
  padding:110px 0 60px;
}
.values-inner{width:100%}
.section-head.center{max-width:none;text-align:center;margin:0 auto 48px}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:960px;margin:0 auto}
.value-card{
  background:var(--sheet-alt);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:36px 28px;text-align:center;
}
.value-number{font-size:32px;font-weight:800;line-height:1;color:var(--accent);margin:0 0 18px}
.value-label{font-size:13px;font-weight:700;letter-spacing:.18em;color:var(--ink-soft);margin:0 0 12px}
.values .section-head .eyebrow{color:rgba(255,255,255,.65)}
.value-card h3{font-size:18px;font-weight:800;color:#fff;margin:0 0 12px;word-break:keep-all}
.value-card p{font-size:14px;line-height:1.7;color:var(--ink-soft);margin:0;word-break:keep-all}

/* ---------- closing + footer (home, section 4) ---------- */
.closing{
  height:auto;min-height:100vh;
  display:flex;flex-direction:column;justify-content:space-between;
  background:var(--black);
}
.closing-cta{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:130px 24px 60px;
}
.closing-cta .eyebrow{font-size:13px;font-weight:700;letter-spacing:.2em;color:rgba(255,255,255,.65);margin:0 0 18px}
.closing-cta h2{font-size:clamp(24px,3.6vw,38px);font-weight:800;color:#fff;line-height:1.4;margin:0 0 24px;word-break:keep-all}
.closing-cta .closing-desc{margin-bottom:34px}
.join-button{
  display:inline-flex;align-items:center;justify-content:center;gap:22px;
  min-height:56px;min-width:180px;padding:16px 28px;
  border:1px solid rgba(255,255,255,.2);border-radius:999px;
  background:var(--accent);color:#fff;font-size:16px;font-weight:700;
  cursor:pointer;box-shadow:0 8px 24px rgba(1,77,154,.3);
  transition:background .2s ease,color .2s ease,transform .15s ease,box-shadow .2s ease;
  -webkit-tap-highlight-color:rgba(255,255,255,.2);
}
.join-arrow{font-size:22px;line-height:1;transition:transform .2s ease}
@media (hover:hover){
  .join-button:hover{background:#fff;color:var(--accent);transform:translateY(-3px);box-shadow:0 12px 32px rgba(1,77,154,.45)}
  .join-button:hover .join-arrow{transform:translateX(4px)}
}
.join-button:focus-visible{outline:3px solid #fff;outline-offset:5px;background:#fff;color:var(--accent)}
.join-button:active{background:#fff;color:var(--accent);transform:translateY(1px) scale(.97);box-shadow:0 2px 8px rgba(1,77,154,.25)}
@media (prefers-reduced-motion:reduce){
  .join-button,.join-arrow{transition:none}
  .join-button:hover,.join-button:active,.join-button:hover .join-arrow{transform:none}
}
.closing .site-footer{padding-top:32px}

/* ---------- scrolling page backdrop (Activities / Insight / Apply) ----------
   Keep the image in document coordinates so scrolling reveals its lower parts. */
body:has(> .page-backdrop){
  position:relative;
  isolation:isolate;
}
.page-backdrop{
  position:absolute;inset:0;z-index:-1;
  background:#000;
  overflow:hidden;
}
.page-backdrop img{
  position:absolute;inset:0;
  width:100%;height:auto;min-height:100%;
  object-fit:cover;
  object-position:center top;
}
.page-backdrop-overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(0,0,0,.6) 0%, rgba(0,0,0,.4) 25%, rgba(0,0,0,.4) 65%, rgba(0,0,0,.75) 100%);
}
.insight-page > .page-backdrop img,
.apply-page > .page-backdrop img{filter:blur(4px);transform:scale(1.015);transform-origin:center top}
.insight-page > .page-backdrop .page-backdrop-overlay{background:linear-gradient(180deg,rgba(0,0,0,.72),rgba(0,0,0,.65) 45%,rgba(0,0,0,.82))}

/* One continuous image behind all three home sections, including Contact. */
.home-continuation{
  position:relative;
  isolation:isolate;
}
.home-continuation > .page-backdrop img{
  height:100%;
  object-fit:contain;
}
.home-continuation .intro,
.home-continuation .values,
.home-continuation .closing{
  background:transparent;
}

/* ---------- sub-page header (Activities / Insight / Apply) ---------- */
.page-header{
  padding:170px 0 70px;
  text-align:center;
}
.page-header .eyebrow{font-size:13px;font-weight:700;letter-spacing:.2em;color:var(--blue-500);margin:0 0 14px}
.page-header h1{font-size:clamp(30px,4.4vw,46px);font-weight:800;color:#fff;margin:0 0 14px}
.page-header p{font-size:15.5px;color:var(--ink-soft);max-width:560px;margin:0 auto}
.page-content{padding:60px 0 80px}

/* ---------- about (reused on sub-pages) ---------- */
.about{padding:110px 0 90px}
.section-head{max-width:640px;margin:0 0 48px}
.section-head .eyebrow{font-size:13px;font-weight:700;letter-spacing:.2em;color:var(--blue-500);margin:0 0 14px}
.section-head h2{font-size:clamp(26px,3.4vw,36px);margin:0;font-weight:800;color:#fff}
.section-desc{font-size:15px;line-height:1.7;color:var(--ink-soft);margin:14px 0 0}

.about-grid{display:grid;grid-template-columns:1.3fr .9fr;gap:56px;align-items:start}
.about-text p{font-size:16.5px;line-height:1.85;color:var(--ink-soft);margin:0 0 18px}
.about-text strong{color:#fff}
.about-text em{color:var(--blue-500);font-style:normal;font-weight:700}
.link-more{
  display:inline-flex;align-items:center;gap:6px;margin-top:8px;
  font-weight:700;color:#fff;border-bottom:2px solid var(--blue-500);padding-bottom:3px;
}
.link-more span{transition:transform .2s ease}
.link-more:hover span{transform:translateX(4px)}

.about-stats{display:grid;gap:16px}
.stat-card{
  background:var(--sheet-alt);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:26px 28px;display:flex;align-items:baseline;justify-content:space-between;
}
.stat-num{font-size:30px;font-weight:800;color:#fff}
.stat-num small{font-size:16px;font-weight:700;color:var(--blue-500);margin-left:2px}
.stat-label{font-size:13.5px;color:var(--ink-soft);font-weight:600}

/* ---------- insight (folder browser) ---------- */
.insight-tabs{display:flex;gap:10px;flex-wrap:wrap;margin:40px 0 36px}
.insight-tab{
  background:transparent;border:1px solid var(--line);color:var(--ink-soft);
  padding:9px 18px;border-radius:999px;font-size:13.5px;font-weight:600;cursor:pointer;
  transition:background .2s ease, border-color .2s ease, color .2s ease;
  font-family:var(--ff);
}
.insight-tab:hover{border-color:rgba(1,77,154,.5);color:#fff}
.insight-tab.is-active{background:var(--blue-900);border-color:var(--blue-900);color:#fff}

.folder-grid{
  display:grid;grid-template-columns:repeat(auto-fill, minmax(220px,1fr));gap:20px;
}
.folder-card{
  display:block;background:var(--sheet-alt);border:1px solid var(--line);
  border-radius:var(--radius-md);padding:22px 20px 20px;
  transition:transform .25s ease, border-color .25s ease;
}
.folder-card:hover{transform:translateY(-6px);border-color:rgba(1,77,154,.4)}
.folder-icon{
  position:relative;width:100%;aspect-ratio:16/10;margin:14px 0 22px;
  background:linear-gradient(145deg, var(--blue-500), var(--blue-900) 55%, #014D9A);
  border-radius:4px 16px 16px 16px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.25);
}
.folder-icon::before{
  content:'';position:absolute;left:0;top:-13px;width:44%;height:15px;
  background:linear-gradient(145deg, var(--blue-500), var(--blue-900));
  border-radius:8px 14px 0 0;
}
.folder-card h4{
  font-size:15.5px;font-weight:700;color:#fff;margin:0 0 6px;line-height:1.4;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.folder-card p{font-size:12.5px;color:var(--ink-soft);margin:0}

/* ---------- cards ---------- */
.cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.card{
  background:var(--sheet-alt);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:38px 32px 32px;
  color:#fff;
  position:relative;overflow:hidden;
  transition:transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.card:hover{transform:translateY(-8px);box-shadow:0 24px 50px -20px rgba(0,0,0,.6);border-color:rgba(1,77,154,.35)}
.card::after{
  content:'';position:absolute;right:-40px;top:-40px;width:140px;height:140px;border-radius:50%;
  background:radial-gradient(circle, rgba(1,77,154,.22), transparent 70%);
}
.card-icon{width:52px;height:52px;color:var(--blue-500);margin-bottom:22px;position:relative}
.card h3{font-size:20px;font-weight:800;margin:0 0 12px;position:relative}
.card p{font-size:14.5px;line-height:1.7;color:var(--ink-soft);margin:0 0 24px;position:relative}
.card p strong{color:#fff}
.card-link{
  font-size:14px;font-weight:700;color:var(--blue-500);display:inline-flex;align-items:center;gap:6px;position:relative;
}
.card-link span{transition:transform .2s ease}
.card:hover .card-link span{transform:translateX(4px)}

/* ---------- apply page ---------- */
.apply-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin:0 0 60px}
.step-card{background:var(--sheet-alt);border:1px solid var(--line);border-radius:var(--radius-md);padding:28px 22px}
.step-num{display:block;font-size:13px;font-weight:800;color:var(--blue-500);margin:0 0 12px;letter-spacing:.05em}
.step-card h4{font-size:16px;font-weight:800;color:#fff;margin:0 0 8px}
.step-card p{font-size:13px;color:var(--ink-soft);margin:0;line-height:1.6}

.apply-cta{text-align:center;padding:20px 0 10px}
.apply-cta p{color:var(--ink-soft);margin:0 0 26px;font-size:15px}

/* ---------- footer ---------- */
.site-footer{background:#1c1d21;color:var(--ink-soft);padding:32px 0 28px;border-top:1px solid var(--line)}
.footer-inner{
  max-width:1320px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:center;
}
.footer-brand{justify-self:start}
.footer-contact{justify-self:center;text-align:center}
.footer-brand p{margin:0;font-size:13.5px;line-height:1.6;color:var(--ink-soft);word-break:keep-all}
.footer-brand .footer-copyright{margin-top:10px;font-size:12px}
.footer-contact p{margin:0 0 4px;font-size:13px;line-height:1.5;color:var(--ink-soft)}
.footer-contact p:last-child{margin-bottom:0}
.footer-contact a:hover{color:#fff}
.social-links{display:flex;gap:12px;margin-top:14px}
.social-links a{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
}
.social-links svg{width:16px;height:16px}
.site-footer .social-links{margin-top:0;gap:8px;justify-self:end}
.site-footer .social-links a{border-radius:8px;transition:background .2s ease,color .2s ease}
.site-footer a:focus-visible{outline:2px solid #fff;outline-offset:3px}
.social-links a:hover{background:var(--blue-900);border-color:var(--blue-900)}

/* ---------- reveal on scroll ---------- */
[data-reveal]{opacity:0;transform:translateY(24px);transition:opacity .7s ease, transform .7s ease}
[data-reveal].is-visible{opacity:1;transform:translateY(0)}

/* ==========================================================
   Responsive
   ========================================================== */
@media (max-width:960px){
  .about-grid{grid-template-columns:1fr}
  .cards-grid{grid-template-columns:1fr 1fr}
  .mobile-only{display:inline}
  .value-grid{grid-template-columns:1fr}
  .apply-steps{grid-template-columns:1fr 1fr}
}

@media (max-width:720px){
  .main-nav{
    position:fixed;top:0;right:0;height:100vh;width:min(78vw,320px);
    background:var(--sheet);
    flex-direction:column;align-items:flex-start;justify-content:center;gap:28px;
    padding:40px;transform:translateX(100%);transition:transform .35s ease;
    box-shadow:-20px 0 40px rgba(0,0,0,.4);
  }
  .main-nav.is-open{transform:translateX(0)}
  .nav-toggle{display:flex}
  .nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle.is-open span:nth-child(2){opacity:0}
  .nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

  .cards-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr;gap:12px}
  .footer-contact{justify-self:start;text-align:left}
  .site-footer .social-links{justify-self:start}
  .about{padding:90px 0 70px}
  .hero-content{padding-bottom:90px}
  .intro,.values{padding-top:90px}
  .closing-cta{padding-top:100px}
  .value-grid{gap:16px}
  .apply-steps{grid-template-columns:1fr}
  .page-header{padding-top:120px}
}