/* =========================================================================
   HANSABU · WEB STUDIO
   Light + Ink Blue. Editorial-leaning agency aesthetic.
   Used by /web/ landing and /web/{slug}/ case pages.
   ========================================================================= */

/* ---------- Tokens ---------- */
:root{
  /* Surfaces */
  --bg:           #FAFAF7;
  --surface:      #FFFFFF;
  --surface-alt:  #F2EFE7;
  --surface-deep: #ECE8DE;

  /* Ink blue scale */
  --ink-9:  #0A1428;
  --ink-8:  #0F1B33;
  --ink-7:  #1A2B4A;
  --ink-6:  #2F4570;
  --ink-5:  #4A6396;
  --ink-4:  #6B7E9E;
  --ink-3:  #99A4B8;
  --ink-2:  #D5DAE3;

  /* Text */
  --text:        #0F1B33;
  --text-muted:  #5A6478;
  --text-subtle: #8A93A6;
  --text-on-ink: #F4F1E8;

  /* Lines */
  --line:         rgba(15,27,51,0.08);
  --line-strong:  rgba(15,27,51,0.14);

  /* Accent */
  --accent:        #1A2B4A;
  --accent-hover:  #0F1B33;
  --highlight:     #C9933A;  /* warm gold, used sparingly */

  /* Typography */
  --f-display: "Fraunces", "Noto Serif KR", Georgia, "Times New Roman", serif;
  --f-body:    "Pretendard", "Inter", -apple-system, "Apple SD Gothic Neo", "Noto Sans KR", system-ui, sans-serif;
  --f-mono:    "JetBrains Mono", ui-monospace, Menlo, monospace;

  /* Layout */
  --max-w:    1240px;
  --max-w-text: 720px;
  --gutter:   clamp(1.25rem, 4vw, 3rem);
  --radius-sm: 6px;
  --radius:    10px;
  --radius-lg: 18px;

  /* Motion */
  --ease:      cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  font-family:var(--f-body);
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  font-weight:400;
  word-break:keep-all;
  line-break:strict;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
ul,ol{list-style:none}

/* ---------- Reusable layout ---------- */
.container{
  max-width:var(--max-w);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.container--narrow{ max-width:920px }
.section{ padding-block:clamp(4rem, 8vw, 7rem) }
.section--tight{ padding-block:clamp(2.5rem, 5vw, 4rem) }
.section--alt{ background:var(--surface-alt) }

.eyebrow{
  display:inline-flex;align-items:center;gap:.6rem;
  font-family:var(--f-body);
  font-size:.72rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--ink-5);
  font-weight:600;
}
.eyebrow::before{
  content:"";
  width:1.8rem;height:1px;
  background:var(--ink-5);
}

.h-display{
  font-family:var(--f-display);
  font-weight:400;
  font-variation-settings:"opsz" 96, "SOFT" 50;
  font-size:clamp(2.2rem, 6vw, 4.4rem);
  line-height:1.05;
  letter-spacing:-0.02em;
  color:var(--ink-8);
}
.h-display em{
  font-style:italic;
  font-variation-settings:"opsz" 96, "SOFT" 100;
  color:var(--ink-7);
}
.h-section{
  font-family:var(--f-display);
  font-weight:400;
  font-size:clamp(1.7rem, 3.6vw, 2.6rem);
  line-height:1.15;
  letter-spacing:-0.015em;
  color:var(--ink-8);
}
.h-card{
  font-family:var(--f-display);
  font-weight:500;
  font-size:clamp(1.15rem, 1.8vw, 1.35rem);
  line-height:1.25;
  letter-spacing:-0.01em;
  color:var(--ink-8);
}
.lead{
  font-size:clamp(1rem, 1.2vw, 1.125rem);
  color:var(--text-muted);
  line-height:1.7;
  max-width:var(--max-w-text);
}

/* ---------- Navigation ---------- */
.web-nav{
  position:sticky; top:0; z-index:50;
  background:rgba(250,250,247,0.82);
  backdrop-filter:blur(14px) saturate(160%);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid var(--line);
}
.web-nav__inner{
  max-width:var(--max-w);
  margin-inline:auto;
  padding:.95rem var(--gutter);
  display:flex; align-items:center; justify-content:space-between;
  gap:1rem;
}
.web-nav__brand{
  display:flex; align-items:baseline; gap:.55rem;
  font-family:var(--f-display);
  font-size:1.05rem;
  font-weight:500;
  letter-spacing:.01em;
  color:var(--ink-8);
}
.web-nav__brand b{ font-weight:600 }
.web-nav__brand span{
  font-family:var(--f-body);
  font-size:.65rem;
  font-weight:600;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--ink-5);
  padding:.18rem .45rem;
  border:1px solid var(--line-strong);
  border-radius:3px;
}
.web-nav__links{
  display:none;
  gap:1.8rem;
  align-items:center;
}
.web-nav__links a{
  font-size:.85rem;
  color:var(--ink-6);
  font-weight:500;
  transition:color .2s var(--ease);
}
.web-nav__links a:hover{ color:var(--ink-8) }
.web-nav__cta{
  display:inline-flex; align-items:center; gap:.4rem;
  padding:.55rem 1rem;
  background:var(--accent);
  color:var(--text-on-ink);
  font-size:.82rem;
  font-weight:600;
  border-radius:999px;
  transition:background .2s var(--ease), transform .2s var(--ease);
}
.web-nav__cta:hover{ background:var(--accent-hover); transform:translateY(-1px) }
.web-nav__toggle{
  display:flex; flex-direction:column; gap:5px;
  padding:.5rem; min-width:44px; min-height:44px;
  align-items:center; justify-content:center;
}
.web-nav__toggle span{
  width:22px; height:1.5px;
  background:var(--ink-7);
  transition:transform .25s var(--ease), opacity .25s var(--ease);
}
.web-nav__toggle[aria-expanded="true"] span:nth-child(1){ transform:translateY(6.5px) rotate(45deg) }
.web-nav__toggle[aria-expanded="true"] span:nth-child(2){ opacity:0 }
.web-nav__toggle[aria-expanded="true"] span:nth-child(3){ transform:translateY(-6.5px) rotate(-45deg) }

/* Mobile menu */
.web-nav__menu{
  display:none;
  position:absolute; left:0; right:0; top:100%;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  padding:1rem var(--gutter) 1.5rem;
  flex-direction:column;
  gap:.2rem;
}
.web-nav__menu.open{ display:flex }
.web-nav__menu a{
  padding:.85rem 0;
  font-size:.95rem;
  color:var(--ink-7);
  border-bottom:1px solid var(--line);
}
.web-nav__menu a:last-of-type{ border-bottom:0 }

@media (min-width:880px){
  .web-nav__links{ display:flex }
  .web-nav__toggle{ display:none }
  .web-nav__menu{ display:none !important }
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding-block:clamp(4.5rem, 10vw, 8rem) clamp(3.5rem, 7vw, 5.5rem);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero::after{
  content:"";
  position:absolute;
  right:-12rem; bottom:-12rem;
  width:32rem; height:32rem;
  background:radial-gradient(circle, rgba(26,43,74,0.06) 0%, transparent 65%);
  z-index:0;
  pointer-events:none;
}
.hero__inner{ position:relative; z-index:1 }
.hero__title{ margin-top:1.3rem; max-width:22ch }
.hero__sub{
  margin-top:1.4rem;
  max-width:42ch;
  font-size:clamp(1rem, 1.3vw, 1.18rem);
  line-height:1.65;
  color:var(--text-muted);
}
.hero__cta{
  margin-top:2.2rem;
  display:flex; gap:.8rem; flex-wrap:wrap;
}
.btn{
  display:inline-flex; align-items:center; gap:.5rem;
  padding:.95rem 1.5rem;
  border-radius:999px;
  font-size:.92rem;
  font-weight:600;
  letter-spacing:-0.005em;
  transition:transform .25s var(--ease), background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
  border:1px solid transparent;
}
.btn--primary{
  background:var(--accent);
  color:var(--text-on-ink);
}
.btn--primary:hover{ background:var(--accent-hover); transform:translateY(-2px) }
.btn--ghost{
  background:transparent;
  color:var(--ink-7);
  border-color:var(--line-strong);
}
.btn--ghost:hover{
  border-color:var(--ink-7);
  background:rgba(15,27,51,0.03);
}
.btn .arrow{
  width:.95rem; height:.95rem;
  stroke:currentColor; fill:none;
  stroke-width:1.8;
  transition:transform .25s var(--ease);
}
.btn:hover .arrow{ transform:translateX(3px) }

.hero__meta{
  margin-top:2.5rem;
  padding-top:2rem;
  border-top:1px solid var(--line);
  display:grid;
  grid-template-columns:1fr;
  gap:1.4rem;
  max-width:780px;
}
@media (min-width:680px){
  .hero__meta{ grid-template-columns:repeat(3, 1fr); gap:2rem }
}
.hero__meta-item .k{
  font-family:var(--f-display);
  font-style:italic;
  font-size:1.7rem;
  color:var(--ink-7);
  line-height:1;
}
.hero__meta-item .v{
  margin-top:.4rem;
  font-size:.78rem;
  color:var(--text-muted);
  letter-spacing:.04em;
}

/* ---------- Works grid ---------- */
.works{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(2rem, 4vw, 3.5rem);
  margin-top:clamp(2.5rem, 5vw, 4rem);
}
@media (min-width:760px){
  .works{ grid-template-columns:repeat(2, 1fr); }
}

.work-card{
  position:relative;
  display:block;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  transition:transform .4s var(--ease-out), box-shadow .4s var(--ease-out), border-color .25s var(--ease);
}
.work-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:0 20px 40px -20px rgba(15,27,51,0.18);
}
.work-card__media{
  position:relative;
  background:var(--surface-alt);
  aspect-ratio:16/10;
  overflow:hidden;
}
.work-card__desktop{
  position:absolute; inset:0;
  width:100%; height:100%;
  object-fit:cover; object-position:top center;
  transition:transform .8s var(--ease-out);
}
.work-card:hover .work-card__desktop{ transform:scale(1.02) }
.work-card__mobile{
  position:absolute;
  right:5%; bottom:-8%;
  width:22%;
  border-radius:8px;
  box-shadow:0 18px 40px -10px rgba(15,27,51,0.35);
  border:2px solid #fff;
  z-index:2;
}
.work-card__body{
  padding:1.4rem 1.6rem 1.6rem;
}
.work-card__tag{
  display:inline-block;
  font-size:.7rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--ink-5);
  font-weight:600;
}
.work-card__title{
  margin-top:.55rem;
  font-family:var(--f-display);
  font-weight:500;
  font-size:1.35rem;
  letter-spacing:-0.01em;
  color:var(--ink-8);
}
.work-card__title em{
  font-style:italic;
  color:var(--ink-6);
  font-weight:400;
  font-size:.95em;
  margin-left:.4rem;
}
.work-card__desc{
  margin-top:.55rem;
  font-size:.92rem;
  color:var(--text-muted);
  line-height:1.55;
}
.work-card__foot{
  margin-top:1.1rem;
  display:flex; justify-content:space-between; align-items:center;
  padding-top:1rem;
  border-top:1px solid var(--line);
  font-size:.82rem;
}
.work-card__year{ color:var(--text-subtle); letter-spacing:.05em }
.work-card__more{
  display:inline-flex; align-items:center; gap:.35rem;
  color:var(--ink-7); font-weight:600;
}
.work-card__more svg{ width:.85rem; height:.85rem; transition:transform .3s var(--ease) }
.work-card:hover .work-card__more svg{ transform:translateX(4px) }

/* ---------- Capability ---------- */
.cap-grid{
  margin-top:clamp(2.5rem, 5vw, 4rem);
  display:grid;
  grid-template-columns:1fr;
  gap:1.4rem;
}
@media (min-width:760px){ .cap-grid{ grid-template-columns:repeat(3, 1fr); gap:2rem } }
.cap{
  padding:1.8rem;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
}
.cap__no{
  font-family:var(--f-display);
  font-style:italic;
  font-size:1.1rem;
  color:var(--highlight);
}
.cap__title{
  margin-top:.6rem;
  font-family:var(--f-display);
  font-weight:500;
  font-size:1.2rem;
  color:var(--ink-8);
  letter-spacing:-0.01em;
}
.cap__body{
  margin-top:.6rem;
  font-size:.92rem;
  color:var(--text-muted);
  line-height:1.65;
}

/* ---------- Process ---------- */
.process{
  margin-top:clamp(2.5rem, 5vw, 4rem);
  display:grid;
  gap:0;
  border-top:1px solid var(--line);
}
.process__row{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:1.2rem 1.8rem;
  padding:1.8rem 0;
  border-bottom:1px solid var(--line);
  align-items:start;
}
@media (min-width:760px){
  .process__row{
    grid-template-columns:5rem 14rem 1fr;
    align-items:baseline;
  }
}
.process__step{
  font-family:var(--f-display);
  font-style:italic;
  font-size:1.5rem;
  color:var(--highlight);
  line-height:1;
}
.process__name{
  font-family:var(--f-display);
  font-weight:500;
  font-size:1.25rem;
  color:var(--ink-8);
  letter-spacing:-0.01em;
}
.process__detail{
  font-size:.95rem;
  color:var(--text-muted);
  line-height:1.65;
}
.process__detail strong{ color:var(--ink-7); font-weight:600 }
.process__note{
  margin-top:2.2rem;
  padding:1.4rem 1.6rem;
  background:var(--surface);
  border:1px solid var(--line);
  border-left:3px solid var(--highlight);
  border-radius:0 var(--radius) var(--radius) 0;
  font-size:.95rem;
  color:var(--ink-7);
  line-height:1.7;
}

/* ---------- Pricing ---------- */
.pricing{
  margin-top:clamp(2.5rem, 5vw, 4rem);
  display:grid;
  grid-template-columns:1fr;
  gap:1.2rem;
}
@media (min-width:880px){ .pricing{ grid-template-columns:repeat(3, 1fr); gap:1.4rem } }

.plan{
  position:relative;
  padding:2rem 1.8rem;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  display:flex; flex-direction:column;
}
.plan--featured{
  background:var(--ink-8);
  color:var(--text-on-ink);
  border-color:var(--ink-8);
}
.plan--featured .plan__name,
.plan--featured .plan__price-num{ color:var(--text-on-ink) }
.plan--featured .plan__currency,
.plan--featured .plan__price-sub,
.plan--featured .plan__desc,
.plan--featured .plan__features li{ color:rgba(244,241,232,0.75) }
.plan--featured .plan__features li::before{ background:var(--highlight) }
.plan__badge{
  position:absolute;
  top:-.7rem; left:50%;
  transform:translateX(-50%);
  padding:.3rem .9rem;
  background:var(--highlight);
  color:var(--ink-9);
  font-size:.68rem;
  font-weight:700;
  letter-spacing:.15em;
  text-transform:uppercase;
  border-radius:999px;
}
.plan__name{
  font-family:var(--f-display);
  font-weight:500;
  font-size:1.5rem;
  letter-spacing:-0.005em;
  color:var(--ink-8);
}
.plan__desc{
  margin-top:.4rem;
  font-size:.85rem;
  color:var(--text-muted);
}
.plan__price{
  margin-top:1.4rem;
  display:flex; align-items:baseline; gap:.25rem;
  font-family:var(--f-display);
}
.plan__currency{
  font-size:1rem;
  color:var(--text-muted);
  font-weight:400;
}
.plan__price-num{
  font-size:2.4rem;
  font-weight:500;
  color:var(--ink-8);
  letter-spacing:-0.02em;
}
.plan__price-sub{
  font-size:.78rem;
  color:var(--text-muted);
  margin-left:.3rem;
}
.plan__features{
  margin-top:1.6rem;
  padding-top:1.4rem;
  border-top:1px solid var(--line);
  flex:1;
}
.plan--featured .plan__features{ border-top-color:rgba(244,241,232,0.15) }
.plan__features li{
  position:relative;
  padding-left:1.2rem;
  font-size:.92rem;
  color:var(--text);
  line-height:1.6;
  margin-block:.55rem;
}
.plan--featured .plan__features li{ color:rgba(244,241,232,0.92) }
.plan__features li::before{
  content:"";
  position:absolute; left:0; top:.65rem;
  width:.45rem; height:.45rem;
  background:var(--ink-7);
  transform:rotate(45deg);
}
.plan__cta{
  margin-top:1.6rem;
  display:inline-flex; align-items:center; justify-content:center; gap:.5rem;
  padding:.9rem 1.2rem;
  background:transparent;
  color:var(--ink-7);
  border:1px solid var(--ink-7);
  border-radius:999px;
  font-size:.9rem;
  font-weight:600;
  transition:background .25s var(--ease), color .25s var(--ease);
}
.plan__cta:hover{ background:var(--ink-7); color:var(--text-on-ink) }
.plan--featured .plan__cta{
  background:var(--highlight);
  color:var(--ink-9);
  border-color:var(--highlight);
}
.plan--featured .plan__cta:hover{ background:#E2A848; border-color:#E2A848 }

/* ---------- FAQ ---------- */
.faq{
  margin-top:clamp(2.5rem, 5vw, 4rem);
  max-width:820px;
}
.faq details{
  border-top:1px solid var(--line);
  padding-block:1.3rem;
}
.faq details:last-child{ border-bottom:1px solid var(--line) }
.faq summary{
  list-style:none;
  cursor:pointer;
  display:flex; justify-content:space-between; align-items:flex-start; gap:1rem;
  font-family:var(--f-display);
  font-weight:500;
  font-size:1.1rem;
  letter-spacing:-0.005em;
  color:var(--ink-8);
}
.faq summary::-webkit-details-marker{ display:none }
.faq summary::after{
  content:"+";
  font-size:1.4rem;
  line-height:1;
  color:var(--ink-5);
  transition:transform .3s var(--ease);
  flex-shrink:0;
}
.faq details[open] summary::after{ content:"–" }
.faq p{
  margin-top:1rem;
  font-size:.95rem;
  color:var(--text-muted);
  line-height:1.75;
}

/* ---------- Closing CTA ---------- */
.closing{
  background:var(--ink-8);
  color:var(--text-on-ink);
  padding-block:clamp(4rem, 9vw, 7rem);
  position:relative;
  overflow:hidden;
}
.closing::before{
  content:"";
  position:absolute;
  left:-10rem; top:-10rem;
  width:30rem; height:30rem;
  background:radial-gradient(circle, rgba(201,147,58,0.12) 0%, transparent 60%);
  pointer-events:none;
}
.closing .h-section{ color:var(--text-on-ink) }
.closing .lead{ color:rgba(244,241,232,0.78); margin-top:1.2rem }
.closing__cta{ margin-top:2.2rem; display:flex; gap:.8rem; flex-wrap:wrap; position:relative; z-index:1 }
.closing .btn--primary{
  background:var(--highlight);
  color:var(--ink-9);
}
.closing .btn--primary:hover{ background:#E2A848 }
.closing .btn--ghost{
  border-color:rgba(244,241,232,0.25);
  color:var(--text-on-ink);
}
.closing .btn--ghost:hover{ border-color:var(--text-on-ink); background:rgba(244,241,232,0.05) }

/* ---------- Footer ---------- */
.web-footer{
  background:var(--bg);
  border-top:1px solid var(--line);
  padding-block:2.5rem 2rem;
}
.web-footer__inner{
  max-width:var(--max-w);
  margin-inline:auto;
  padding-inline:var(--gutter);
  display:flex; flex-wrap:wrap; gap:1.5rem;
  justify-content:space-between; align-items:center;
}
.web-footer__brand{
  font-family:var(--f-display);
  font-size:1rem;
  color:var(--ink-7);
}
.web-footer__links{
  display:flex; flex-wrap:wrap; gap:1.4rem;
  font-size:.82rem;
  color:var(--text-muted);
}
.web-footer__links a:hover{ color:var(--ink-7) }
.web-footer__copy{
  width:100%;
  margin-top:1.2rem; padding-top:1.2rem;
  border-top:1px solid var(--line);
  font-size:.75rem;
  color:var(--text-subtle);
  letter-spacing:.04em;
}

/* =========================================================================
   Case study page
   ========================================================================= */
.case-hero{
  padding-block:clamp(3.5rem, 7vw, 6rem) clamp(2rem, 4vw, 3rem);
  border-bottom:1px solid var(--line);
}
.case-hero__meta{
  display:flex; flex-wrap:wrap; gap:.6rem 1.5rem;
  font-size:.78rem;
  color:var(--text-muted);
  letter-spacing:.06em;
  text-transform:uppercase;
}
.case-hero__meta span{ position:relative }
.case-hero__meta span + span::before{
  content:""; position:absolute; left:-.8rem; top:50%;
  width:3px; height:3px;
  background:var(--ink-3); border-radius:50%;
  transform:translateY(-50%);
}
.case-hero__title{
  margin-top:1.2rem;
  font-family:var(--f-display);
  font-weight:400;
  font-size:clamp(2rem, 5vw, 3.6rem);
  line-height:1.1;
  letter-spacing:-0.018em;
  color:var(--ink-8);
}
.case-hero__title em{ font-style:italic; color:var(--ink-6) }
.case-hero__concept{
  margin-top:1.4rem;
  max-width:48ch;
  font-size:1.05rem;
  color:var(--text-muted);
  line-height:1.7;
}
.case-hero__actions{
  margin-top:2rem;
  display:flex; gap:.8rem; flex-wrap:wrap;
}

.case-shots{
  padding-block:clamp(2rem, 4vw, 3.5rem);
}
.case-shots__grid{
  display:grid;
  grid-template-columns:1fr;
  gap:1.5rem;
  align-items:end;
}
@media (min-width:860px){
  .case-shots__grid{ grid-template-columns:1fr 18rem; gap:2rem }
}
.case-shots__desktop{
  background:var(--surface-alt);
  border-radius:var(--radius);
  border:1px solid var(--line);
  overflow:hidden;
}
.case-shots__desktop img{ width:100% }
.case-shots__mobile{
  background:var(--surface-alt);
  border-radius:var(--radius);
  border:1px solid var(--line);
  padding:1rem;
}
.case-shots__mobile img{ width:100%; border-radius:6px }

.case-notes{
  padding-block:clamp(2.5rem, 5vw, 4rem);
  display:grid;
  grid-template-columns:1fr;
  gap:2.5rem;
}
@media (min-width:880px){
  .case-notes{ grid-template-columns:14rem 1fr; gap:4rem }
}
.case-notes__label{
  font-family:var(--f-body);
  font-size:.72rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--ink-5);
  font-weight:600;
}
.case-notes__body{
  font-size:1.05rem;
  line-height:1.8;
  color:var(--ink-7);
  max-width:60ch;
}
.case-notes__body p + p{ margin-top:1rem }
.case-notes__body strong{ color:var(--ink-8); font-weight:600 }

.case-specs{
  border-top:1px solid var(--line);
  padding-block:clamp(2rem, 4vw, 3rem);
  display:grid;
  grid-template-columns:1fr;
  gap:1.5rem;
}
@media (min-width:760px){ .case-specs{ grid-template-columns:repeat(3, 1fr); gap:2rem } }
.case-specs__item .k{
  font-size:.72rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--ink-5);
  font-weight:600;
}
.case-specs__item .v{
  margin-top:.6rem;
  font-family:var(--f-display);
  font-size:1.15rem;
  color:var(--ink-8);
  line-height:1.45;
}

.case-nav{
  border-top:1px solid var(--line);
  padding-block:clamp(2.5rem, 5vw, 4rem);
  display:flex; flex-wrap:wrap; gap:1.5rem;
  justify-content:space-between; align-items:center;
}
.case-nav__link{
  display:flex; flex-direction:column; gap:.3rem;
  font-family:var(--f-display);
  color:var(--ink-7);
  transition:color .25s var(--ease);
}
.case-nav__link:hover{ color:var(--ink-8) }
.case-nav__link small{
  font-family:var(--f-body);
  font-size:.72rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--ink-5);
  font-weight:600;
}
.case-nav__link span{ font-size:1.15rem; font-weight:500 }
.case-nav__link--prev{ text-align:left }
.case-nav__link--next{ text-align:right }
.case-nav__link--all{
  flex:0 0 auto;
  display:inline-flex; align-items:center; gap:.4rem;
  padding:.7rem 1.2rem;
  border:1px solid var(--line-strong);
  border-radius:999px;
  font-family:var(--f-body);
  font-size:.85rem;
  font-weight:600;
}

/* Floating back-to-portfolio bar (added to copied demo sites) */
.hsb-back{
  position:fixed;
  top:0; left:0; right:0;
  z-index:9999;
  display:flex; justify-content:space-between; align-items:center;
  padding:.6rem 1rem;
  background:rgba(15,27,51,0.92);
  color:#F4F1E8;
  font-family:"Pretendard","Inter",system-ui,sans-serif;
  font-size:.82rem;
  backdrop-filter:blur(8px);
  border-bottom:1px solid rgba(244,241,232,0.1);
}
.hsb-back a{ color:inherit; text-decoration:none }
.hsb-back__left{ display:flex; align-items:center; gap:.6rem }
.hsb-back__brand{ font-weight:600; letter-spacing:.04em }
.hsb-back__sep{ color:rgba(244,241,232,0.4) }
.hsb-back__label{ color:rgba(244,241,232,0.7) }
.hsb-back__cta{
  display:inline-flex; align-items:center; gap:.35rem;
  padding:.35rem .8rem;
  background:#C9933A; color:#0A1428;
  border-radius:999px;
  font-weight:600; font-size:.75rem;
}
@media (max-width:560px){
  .hsb-back__label{ display:none }
}

/* ---------- Accessibility ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:0.01ms!important;
    animation-iteration-count:1!important;
    transition-duration:0.01ms!important;
    scroll-behavior:auto!important;
  }
}

/* Focus visible */
a:focus-visible, button:focus-visible, summary:focus-visible{
  outline:2px solid var(--ink-7);
  outline-offset:3px;
  border-radius:4px;
}