:root{
  --ink:#0f172a;
  --muted:#64748b;
  --line:rgba(15,23,42,.12);
  --bg:#ffffff;
  --panel-bg:#e9e1d2;

  /* 지대색 */
  --sew:#0c4b8e;
  --prefer:#21a077;
  --post2:#ed6d00;
  --post3:#f6ab00;
}

/* =========================
   PAGE LAYOUT
========================= */

.detail-stage{
  background:#ffffff;
}

.detail-layout{
  display:grid;
  grid-template-columns:320px 1fr;
}

/* =========================
   LEFT PANEL
========================= */

.detail-side{
  background:var(--panel-bg);
  min-height:100vh;
}

.detail-side__label{
  position:sticky;
  top:var(--header-h);
  height:calc(100vh - var(--header-h));
  display:flex;
  align-items:center;
  justify-content:center;
  writing-mode:vertical-rl;
  text-orientation:mixed;
  font-size:52px;
  font-weight:900;
  letter-spacing:.18em;
  color:#fff;
  transform:translateX(110px);
  user-select:none;
  pointer-events:none;
}

/* =========================
   MAIN
========================= */

.detail-main{
  padding:56px 0 90px;
}

.detail-wrap{
  width:min(1160px, calc(100% - 40px));
  margin:0 auto;
}

/* =========================
   BREADCRUMB
========================= */

.detail-breadcrumb{
  display:flex;
  gap:10px;
  margin-bottom:30px;
  font-size:15px;
  font-weight:800;
  color:#475569;
}

.detail-breadcrumb a{
  color:#475569;
  text-decoration:none;
}

.detail-breadcrumb span{
  color:#0f172a;
}

.detail-breadcrumb__sep{
  color:#94a3b8;
}

/* =========================
   SECTION LINE
========================= */

.detail-divider{
  margin-top:16px;
  margin-bottom:24px;
  width:260px;
  max-width:100%;
  height:1px;
  background:rgba(15,23,42,.14);
}

/* =========================
   PROGRAM
========================= */

.detail-program{
  margin-bottom:46px;
}

.detail-program__head{
  margin-bottom:18px;
}

.detail-program__title{
  margin:0;
  font-size:26px;
  font-weight:900;
  color:#0f172a;
}

.program-steps--detail{
  display:flex;
  gap:28px;
  flex-wrap:wrap;
}

.program-steps--detail .program-step{
  position:relative;
  height:56px;
  min-width:170px;
  padding:0 26px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:14px;
  transform:skewX(-14deg);
  background:#fff;
  border:1px solid rgba(15,23,42,.10);
  box-shadow:0 12px 26px rgba(2,6,23,.08);
  text-decoration:none;
  transition:all .2s ease;
}

.program-steps--detail .program-step span{
  transform:skewX(14deg);
  font-weight:900;
  color:#111827;
}

.program-steps--detail .program-step:hover{
  transform:skewX(-14deg) translateY(-2px);
  box-shadow:0 16px 30px rgba(2,6,23,.10);
}

/* 현재 단계만 지대색 */
.program-step.is-sew.is-current{
  background:var(--sew);
  border-color:var(--sew);
}

.program-step.is-prefer.is-current{
  background:var(--prefer);
  border-color:var(--prefer);
}

.program-step.is-post2.is-current{
  background:var(--post2);
  border-color:var(--post2);
}

.program-step.is-post3.is-current{
  background:var(--post3);
  border-color:var(--post3);
}

.program-step.is-current span{
  color:#fff;
}

/* =========================
   HERO
========================= */

.detail-hero{
  display:grid;
  grid-template-columns:320px 460px;
  gap:48px;
  align-items:start;
  margin-bottom:70px;
}

.detail-hero__imagebox{
  border:1px solid rgba(15,23,42,.08);
  border-radius:20px;
  padding:18px;
  background:#fff;
  box-shadow:0 16px 34px rgba(2,6,23,.08);
}

.detail-hero__image{
  display:flex;
  align-items:center;
  justify-content:center;
}

.detail-hero__image img{
  width:100%;
  max-width:240px;
  display:block;
}

.detail-hero__info{
  padding-top:18px;
  max-width:460px;
}

.detail-hero__eyebrow{
  margin:0 0 6px;
  font-size:13px;
  letter-spacing:.18em;
  font-weight:900;
  color:#b8862f;
}

.detail-hero__title{
  margin:0 0 6px;
  font-size:34px;
  font-weight:900;
  color:#0f172a;
}

.detail-hero__subtitle{
  margin:0 0 16px;
  font-size:17px;
  font-weight:900;
  color:#475569;
}

.detail-hero__summary{
  margin:0;
  padding-top:14px;
  font-size:16px;
  line-height:1.9;
  color:#243041;
  word-break:keep-all;
}

/* =========================
   SECTION TITLE
========================= */

.detail-section{
  padding:0 0 10px;
}

.detail-section__title{
  margin:0;
  font-size:26px;
  font-weight:900;
  color:#0f172a;
}

/* =========================
   INFO CARDS
========================= */

.detail-cards{
  margin-top:10px;
  display:grid;
  grid-template-columns:repeat(2, minmax(0, 1fr));
  gap:18px;
  max-width:860px;
}

.detail-card{
  border:1px solid rgba(15,23,42,.08);
  border-radius:18px;
  background:#fff;
  box-shadow:0 10px 24px rgba(2,6,23,.05);
  padding:22px 22px 20px;
}

.detail-card--wide{
  grid-column:1 / -1;
}

.detail-card__title{
  margin:0 0 12px;
  font-size:18px;
  font-weight:900;
  color:#0f172a;
}

.detail-card__text{
  margin:0;
  font-size:15px;
  line-height:1.85;
  color:#334155;
}

.detail-card__text + .detail-card__text{
  margin-top:4px;
}

.detail-card__list{
  margin:0;
  padding-left:18px;
  font-size:15px;
  line-height:1.85;
  color:#334155;
}

.detail-card__list li{
  margin:5px 0;
}

/* =========================
   DETAIL NAV
========================= */

.detail-nav{
  width:100%;
  max-width:860px;
  margin:70px 0 0;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  column-gap:20px;
  border-top:1px solid #e5e7eb;
  padding-top:36px;
}

.detail-nav__prev,
.detail-nav__next,
.detail-nav__list,
.detail-nav__placeholder{
  min-height:48px;
}

.detail-nav__prev{
  justify-self:start;
}

.detail-nav__next{
  justify-self:end;
}

.detail-nav__prev,
.detail-nav__next{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:0 18px;
  border-radius:999px;
  background:#f3f4f6;
  color:#111827;
  font-size:15px;
  font-weight:800;
  text-decoration:none;
  white-space:nowrap;
  transition:all .2s ease;
  border:1px solid rgba(15,23,42,.08);
}

.detail-nav__prev:hover,
.detail-nav__next:hover{
  background:#e5e7eb;
  transform:translateY(-2px);
}

.detail-nav__list{
  justify-self:center;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:0 24px;
  border-radius:999px;
  background:#0f172a;
  color:#fff;
  font-size:15px;
  font-weight:800;
  text-decoration:none;
  white-space:nowrap;
  transition:all .2s ease;
  border:1px solid #0f172a;
}

.detail-nav__list:hover{
  background:#111827;
}

.detail-nav__placeholder{
  justify-self:start;
  visibility:hidden;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:0 18px;
  border-radius:999px;
  background:#f3f4f6;
  font-size:15px;
  font-weight:800;
  white-space:nowrap;
}

/* =========================
   MOBILE
========================= */

@media (max-width:900px){

  .detail-layout{
    grid-template-columns:1fr;
  }

  .detail-side{
    display:none;
  }

  .detail-main{
    padding:40px 0 70px;
  }

  .detail-wrap{
    width:min(100% - 28px, 900px);
  }

  .detail-hero{
    grid-template-columns:1fr;
    gap:28px;
    margin-bottom:44px;
  }

  .detail-hero__imagebox{
    padding:14px;
  }

  .detail-hero__image img{
    max-width:190px;
  }

  .detail-hero__info{
    max-width:100%;
    padding-top:0;
  }

  .detail-hero__title{
    font-size:28px;
  }

  .detail-hero__summary{
    font-size:15px;
    line-height:1.85;
  }

  .detail-program__title,
  .detail-section__title{
    font-size:22px;
  }

  .program-steps--detail{
    gap:12px;
  }

  .program-steps--detail .program-step{
    min-width:100%;
    padding:0 16px;
  }

  .detail-cards{
    grid-template-columns:1fr;
    gap:14px;
  }

  /* 모바일에서도 가로 3칸 유지 + 버튼 느낌 강화 */
  .detail-nav{
    width:100%;
    margin-top:44px;
    grid-template-columns:1fr auto 1fr;
    column-gap:10px;
    padding-top:24px;
  }

  .detail-nav__prev,
  .detail-nav__next,
  .detail-nav__list,
  .detail-nav__placeholder{
    min-height:44px;
    padding:0 14px;
    font-size:13px;
    border-radius:12px;
    box-sizing:border-box;
  }

  .detail-nav__prev,
  .detail-nav__next{
    background:#ffffff;
    border:1px solid rgba(15,23,42,.18);
    box-shadow:0 6px 14px rgba(2,6,23,.06);
  }

  .detail-nav__list{
    background:#0f172a;
    color:#fff;
    border:1px solid #0f172a;
    box-shadow:0 8px 18px rgba(15,23,42,.16);
  }
}