:root{
  --ink:#0F1E2E;
  --card:#16283C;
  --card-hi:#1C324A;
  --mint:#4FD1AE;
  --gold:#E8B948;
  --slate:#8FA3B8;
  --line:#28405A;
  --white:#F4F6F8;
  --accent:#4FD1AE; /* overridden per series page */
  --radius:10px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink);
  color:var(--white);
  font-family:'IBM Plex Sans',sans-serif;
  line-height:1.55;
}
h1,h2,h3,.display{
  font-family:'Space Grotesk',sans-serif;
  font-weight:600;
  letter-spacing:-0.01em;
}
.mono{font-family:'IBM Plex Mono',monospace;}
a{color:inherit;}
:focus-visible{outline:2px solid var(--accent); outline-offset:2px;}
.wrap{max-width:1120px; margin:0 auto; padding:0 24px;}

/* ---------- header / nav ---------- */
header.site{
  position:sticky; top:0; z-index:40;
  background:rgba(15,30,46,0.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex; align-items:center; justify-content:space-between; padding:16px 24px; max-width:1120px; margin:0 auto;}
.brand{display:flex; align-items:center; gap:10px; font-size:18px; font-weight:700; text-decoration:none;}
.brand .dot{width:10px; height:10px; border-radius:50%; background:var(--mint); box-shadow:0 0 12px var(--mint);}
.nav-links{display:flex; gap:22px; font-size:14px; color:var(--slate);}
.nav-links a{text-decoration:none; transition:color .15s;}
.nav-links a:hover, .nav-links a.active{color:var(--mint);}

/* ---------- day strip (cross-series nav) ---------- */
.day-strip{display:flex; gap:8px; flex-wrap:wrap; padding:22px 0 6px;}
.day-pill{
  font-family:'IBM Plex Mono',monospace; font-size:11.5px; padding:8px 13px; border-radius:999px;
  border:1px solid var(--line); background:var(--card); color:var(--slate); text-decoration:none;
  transition:.15s; white-space:nowrap;
}
.day-pill:hover{color:var(--white); border-color:var(--slate); transform:translateY(-1px);}
.day-pill:active{transform:translateY(0) scale(.96);}
.day-pill.current{background:var(--accent); color:#08221b; border-color:var(--accent); font-weight:600;}

/* ---------- generic hero / section ---------- */
.eyebrow{
  font-family:'IBM Plex Mono',monospace; font-size:12px; letter-spacing:.14em; text-transform:uppercase;
  color:var(--accent); margin:0 0 14px;
}
.page-hero{padding:30px 0 20px; border-bottom:1px solid var(--line); margin-bottom:26px;}
.page-hero h1{font-size:34px; line-height:1.15; margin:0 0 14px;}
.page-hero p{color:var(--slate); font-size:15.5px; max-width:64ch; margin:0;}

.btn{
  font-family:'IBM Plex Mono',monospace; font-size:13px; padding:11px 18px; border-radius:8px;
  border:1px solid var(--line); background:var(--card); cursor:pointer; transition:.15s;
  text-decoration:none; display:inline-flex; align-items:center; gap:8px;
}
.btn:hover{border-color:var(--accent); color:var(--accent);}
.btn:active{transform:scale(.96);}
.btn.primary{background:var(--mint); color:#08221b; border-color:var(--mint); font-weight:600;}
.btn.primary:hover{background:#66e0bf; color:#08221b;}

/* ---------- toolbar / search ---------- */
.toolbar{
  display:flex; flex-wrap:wrap; gap:10px; align-items:center; justify-content:space-between;
  padding:6px 0 22px;
}
.search{
  display:flex; align-items:center; gap:8px; background:var(--card); border:1px solid var(--line);
  border-radius:8px; padding:9px 12px; min-width:220px;
}
.search input{
  background:none; border:none; outline:none; color:var(--white); font-family:'IBM Plex Sans',sans-serif;
  font-size:14px; width:100%;
}
.search input::placeholder{color:var(--slate);}
.section-title{font-size:13px; text-transform:uppercase; letter-spacing:.12em; color:var(--slate); margin:8px 0 18px; font-family:'IBM Plex Mono',monospace;}

/* ---------- form components (contact page etc.) ---------- */
.chip{
  font-family:'IBM Plex Mono',monospace; font-size:12px; padding:8px 14px; border-radius:999px;
  border:1px solid var(--line); background:var(--card); color:var(--slate); cursor:pointer; transition:.15s;
}
.chip:hover{color:var(--white); border-color:var(--slate);}
.chip.active{background:var(--accent); color:#08221b; border-color:var(--accent); font-weight:600;}
.chip:active{transform:scale(.96);}
.field-group{display:flex; flex-direction:column; gap:8px; margin-bottom:20px;}
.field-group label{font-family:'IBM Plex Mono',monospace; font-size:12px; color:var(--slate); text-transform:uppercase; letter-spacing:.06em;}
.field-group input[type=text], .field-group input[type=email], .field-group textarea{
  background:var(--ink); border:1px solid var(--line); border-radius:8px; padding:12px 14px; color:var(--white);
  font-family:'IBM Plex Sans',sans-serif; font-size:14.5px; width:100%; resize:vertical; transition:border-color .15s;
}
.field-group input:focus, .field-group textarea:focus{outline:none; border-color:var(--accent);}
.chip-row{display:flex; flex-wrap:wrap; gap:8px;}
.form-card{background:var(--card); border:1px solid var(--line); border-radius:14px; padding:34px 36px; max-width:620px;}
.form-note{font-size:12.5px; color:var(--slate); margin-top:4px;}
.form-success{
  display:none; align-items:center; gap:10px; background:var(--card); border:1px solid var(--mint);
  border-radius:10px; padding:16px 18px; color:var(--mint); font-size:14px; margin-top:18px;
}
.form-success.show{display:flex;}

/* ---------- image holders (cards, banners, modal) ---------- */
.thumb{
  position:relative; width:100%; min-height:250px; border-radius:var(--radius) var(--radius) 0 0;
  background:var(--card-hi); display:flex; justify-content:center; align-items:center; padding:10px;
}
.thumb img{width:100%; height:auto; object-fit:contain; display:block; max-height:none;}
.thumb-fallback{
  position:absolute; inset:0; display:none; flex-direction:column; align-items:center; justify-content:center;
  gap:6px; background:linear-gradient(150deg, color-mix(in srgb, var(--accent) 22%, var(--card)), var(--card));
}
.thumb-fallback svg{width:26px; height:26px; opacity:.55;}
.thumb-fallback span{font-family:'IBM Plex Mono',monospace; font-size:10px; letter-spacing:.08em; color:var(--slate); text-transform:uppercase;}

.banner{
  position:relative; width:100%; aspect-ratio:auto; border-radius:10px 100px / 120px;; overflow:hidden; margin-bottom:26px;
  background:var(--card);
}
.banner img{width:100%; height:100%; object-fit:contain; object-position:inherit; display:block;}
.banner .thumb-fallback svg{width:34px; height:34px;}
.banner .thumb-fallback span{font-size:11px;}

.modal-hero{position:relative; width:100%; min-height:400px; border-radius:14px 14px 0 0; overflow:hidden; margin:-38px -40px 22px; background:var(--card-hi);}
.modal-hero img{width:100%; height:100%; object-fit:contain; object-position:center; display:block;}
.modal-hero .thumb-fallback svg{width:30px; height:30px;}

/* ---------- post grid / cards ---------- */
.grid{display:grid; grid-template-columns:repeat(3,1fr); gap:18px; padding-bottom:60px;}
.card{
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius); overflow:hidden;
  display:flex; flex-direction:column; cursor:pointer;
  transition:transform .18s ease, border-color .18s ease, background .18s ease, box-shadow .18s ease;
  opacity:0; transform:translateY(16px);
}
.card.in{opacity:1; transform:translateY(0); transition:transform .5s cubic-bezier(.2,.7,.3,1), opacity .5s ease, border-color .18s ease, background .18s ease, box-shadow .18s ease;}
.card:hover{transform:translateY(-4px); border-color:var(--accent); background:var(--card-hi); box-shadow:0 10px 26px -12px rgba(0,0,0,.5);}
.card:active{transform:translateY(-1px) scale(.99);}
.card-body{padding:18px 20px 20px; display:flex; flex-direction:column; gap:12px; flex:1;}
.card-top{display:flex; justify-content:space-between; align-items:center;}
.ref{font-family:'IBM Plex Mono',monospace; font-size:11px; color:var(--gold);}
.stage-tag{
  font-family:'IBM Plex Mono',monospace; font-size:10.5px; color:var(--accent); border:1px solid var(--accent);
  border-radius:999px; padding:3px 9px;
}
.card h3{font-size:17px; margin:0; line-height:1.3;}
.card p{font-size:13.5px; color:var(--slate); margin:0; flex:1;}
.card-meta{font-family:'IBM Plex Mono',monospace; font-size:11px; color:var(--slate); display:flex; justify-content:space-between;}
.empty{grid-column:1/-1; text-align:center; color:var(--slate); padding:40px 0; font-family:'IBM Plex Mono',monospace; font-size:13px;}

/* ---------- post detail overlay ---------- */
.overlay{
  position:fixed; inset:0; background:rgba(8,15,24,0.86); backdrop-filter:blur(4px);
  display:none; align-items:flex-start; justify-content:center; overflow-y:auto; z-index:60; padding:40px 20px;
  opacity:0; transition:opacity .2s ease;
}
.overlay.open{display:flex;}
.overlay.show{opacity:1;}
.post-detail{
  background:var(--card); border:1px solid var(--line); border-radius:14px; max-width:720px; width:100%;
  padding:38px 40px 48px; position:relative;
  transform:scale(.95) translateY(10px); opacity:0; transition:transform .28s cubic-bezier(.2,.7,.3,1), opacity .28s ease;
}
.overlay.show .post-detail{transform:scale(1) translateY(0); opacity:1;}
.close-btn{
  position:absolute; top:18px; right:18px; background:none; border:1px solid var(--line); color:var(--slate);
  width:32px; height:32px; border-radius:50%; cursor:pointer; font-size:16px; line-height:1;
}
.close-btn:hover{color:var(--white); border-color:var(--accent);}
.post-detail .ref{display:block; margin-bottom:10px;}
.post-detail h2{font-size:28px; margin:0 0 8px; line-height:1.2;}
.post-detail .card-meta{margin-bottom:22px; justify-content:flex-start; gap:18px;}
.post-body p{color:#D6DEE6; font-size:15.5px; margin:0 0 16px;}
.post-body strong{color:var(--accent);}

/* ---------- week grid (home) ---------- */
.week-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:14px; padding:8px 0 60px;}
.day-card{
  background:var(--card); border:1px solid var(--line); border-radius:14px; padding:22px 20px;
  text-decoration:none; display:flex; flex-direction:column; gap:10px; transition:.15s; position:relative; overflow:hidden;
}
.day-card::before{content:''; position:absolute; top:0; left:0; right:0; height:3px; background:var(--dc);}
.day-card:hover{transform:translateY(-3px); border-color:var(--dc); background:var(--card-hi);}
.day-card .dnum{font-family:'IBM Plex Mono',monospace; font-size:11px; color:var(--dc);}
.day-card h3{font-size:17px; margin:0;}
.day-card p{font-size:13px; color:var(--slate); margin:0;}

/* ---------- newsletter / footer ---------- */
.newsletter{
  background:var(--card); border:1px solid var(--line); border-radius:14px; padding:34px 36px;
  display:flex; justify-content:space-between; align-items:center; gap:24px; flex-wrap:wrap; margin-bottom:60px;
}
.newsletter h3{margin:0 0 6px; font-size:19px;}
.newsletter p{margin:0; color:var(--slate); font-size:13.5px; max-width:42ch;}
.newsletter form{display:flex; gap:8px;}
.newsletter input[type=email]{
  background:var(--ink); border:1px solid var(--line); border-radius:8px; padding:10px 12px; color:var(--white);
  font-family:'IBM Plex Sans',sans-serif; font-size:13.5px; min-width:200px;
}
footer{border-top:1px solid var(--line); padding:26px 0 50px; color:var(--slate); font-size:12.5px;
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; max-width:1120px; margin:0 auto;}
footer a{color:var(--mint); text-decoration:none;}

@media (max-width:860px){
  .grid{grid-template-columns:1fr 1fr;}
  .week-grid{grid-template-columns:1fr 1fr;}
  .nav-links{display:none;}
  .page-hero h1{font-size:28px;}
}
@media (max-width:560px){
  .grid{grid-template-columns:1fr;}
  .week-grid{grid-template-columns:1fr;}
  .post-detail{padding:28px 22px 36px;}
  .newsletter{flex-direction:column; align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{transition:none !important; animation:none !important;}
  .card{opacity:1 !important; transform:none !important;}
  .overlay, .overlay .post-detail{opacity:1 !important; transform:none !important;}
}