:root{
  --void:#0B0A08;
  --panel:#161310;
  --panel-2:#1E1A15;
  --paper:#EDE6D6;
  --muted:#857E6E;
  --line: rgba(237,230,214,0.12);
  --display: 'Bebas Neue', sans-serif;
  --mono: 'Courier Prime', monospace;
  --serif: 'Source Serif 4', serif;
  --accent: #5ED9C9;
  --accent-dim: rgba(94,217,201,0.12);
}
*{ margin:0; padding:0; box-sizing:border-box; }
body{
  background:var(--void);
  color:var(--paper);
  font-family:var(--serif);
  line-height:1.7;
}
a{ color:inherit; text-decoration:none; }
img{ display:block; max-width:100%; }

/* header */
.site-header{
  position:sticky; top:0; z-index:20;
  display:flex; align-items:center; justify-content:space-between;
  padding:22px 5%;
  background:rgba(11,10,8,0.9);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.logo{
  font-family:var(--display);
  font-size:1.4rem;
  letter-spacing:0.08em;
  display:flex; align-items:center; gap:10px;
}
.logo::before{
  content:"";
  width:9px; height:9px;
  border-radius:50%;
  background:var(--accent);
}
.site-nav{ display:flex; gap:30px; }
.site-nav a{
  font-family:var(--mono); font-size:0.76rem; letter-spacing:0.08em;
  color:var(--muted);
  transition:color .25s ease;
}
.site-nav a:hover{ color:var(--accent); }

/* category hero */
.cat-hero{
  padding:80px 5% 60px;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(ellipse at 20% 0%, var(--accent-dim), transparent 55%),
    var(--void);
}
.cat-eyebrow{
  font-family:var(--mono); font-size:0.76rem; letter-spacing:0.2em; text-transform:uppercase;
  color:var(--accent);
  margin-bottom:16px;
}
.cat-title{
  font-family:var(--display);
  font-size:clamp(2.6rem, 7vw, 4.6rem);
  letter-spacing:0.01em;
  margin-bottom:16px;
}
.cat-desc{
  max-width:560px;
  color:var(--muted);
  font-size:1.02rem;
  line-height:1.7;
}
.cat-count{
  font-family:var(--mono); font-size:0.74rem; color:var(--muted);
  margin-top:20px; letter-spacing:0.06em;
}

/* article grid */
.article-grid{
  padding:60px 5% 100px;
  display:grid;
  grid-template-columns:repeat(2, 1fr);
  gap:26px;
  max-width:1200px;
  margin:0 auto;
}
.article-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:4px;
  overflow:hidden;
  transition:border-color .3s ease, transform .3s ease, box-shadow .3s ease;
}
.article-card:hover{
  border-color:var(--accent);
  transform:translateY(-3px);
  box-shadow:0 20px 40px rgba(0,0,0,0.4);
}
.article-card .thumb{
  height:200px;
  background-size:cover;
  background-position:center;
  background-color:var(--panel-2);
  position:relative;
}
.article-card .thumb::after{
  content:"";
  position:absolute; inset:0;
  background:linear-gradient(180deg, transparent 40%, rgba(11,10,8,0.85) 100%);
}
.article-card .case-num{
  position:absolute; top:12px; left:12px; z-index:1;
  font-family:var(--mono); font-size:0.68rem; letter-spacing:0.08em;
  color:var(--accent);
  background:rgba(11,10,8,0.75);
  border:1px solid var(--accent);
  padding:3px 8px;
}
.article-card .body{ padding:20px 22px 24px; }
.article-card .date{
  font-family:var(--mono); font-size:0.68rem; color:var(--muted); letter-spacing:0.06em;
  margin-bottom:10px;
}
.article-card h3{
  font-family:var(--display);
  font-size:1.4rem;
  margin-bottom:10px;
  line-height:1.15;
}
.article-card p{
  color:var(--muted);
  font-size:0.88rem;
  line-height:1.6;
}
.empty-state{
  padding:60px 5%;
  text-align:center;
  color:var(--muted);
  font-family:var(--mono);
  font-size:0.85rem;
}

/* article page */
.article-hero{
  height:46vh;
  min-height:320px;
  background-size:cover;
  background-position:center;
  background-color:var(--panel);
  position:relative;
  display:flex; align-items:flex-end;
}
.article-hero::after{
  content:"";
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(11,10,8,0.2) 0%, rgba(11,10,8,0.95) 100%);
}
.article-hero-inner{
  position:relative; z-index:1;
  padding:0 5% 44px;
  max-width:820px;
}
.article-body{
  max-width:720px;
  margin:0 auto;
  padding:60px 6% 100px;
}
.article-body .case-tag{
  font-family:var(--mono); font-size:0.76rem; letter-spacing:0.1em;
  color:var(--accent);
  margin-bottom:14px;
}
.article-body h1{
  font-family:var(--display);
  font-size:clamp(2.2rem, 6vw, 3.4rem);
  line-height:1.05;
  margin-bottom:14px;
}
.article-meta{
  display:flex; gap:24px; flex-wrap:wrap;
  font-family:var(--mono); font-size:0.72rem; color:var(--muted);
  margin-bottom:8px;
}
.article-content{
  margin-top:40px;
  font-size:1.05rem;
  color:var(--paper);
}
.article-content p{ margin-bottom:20px; color:var(--paper); opacity:0.92; }
.article-content h2{
  font-family:var(--display);
  font-size:1.7rem;
  margin:36px 0 14px;
}
.back-link{
  display:inline-block;
  margin-top:50px;
  font-family:var(--mono); font-size:0.78rem; letter-spacing:0.08em;
  color:var(--muted);
  border-bottom:1px solid var(--line);
  padding-bottom:3px;
  transition:color .25s ease, border-color .25s ease;
}
.back-link:hover{ color:var(--accent); border-color:var(--accent); }

/* footer */
.site-footer{
  padding:40px 5% 50px;
  border-top:1px solid var(--line);
  text-align:center;
}
.foot-links{
  display:flex; justify-content:center; flex-wrap:wrap; gap:22px;
  margin-bottom:16px;
}
.foot-links a{
  font-family:var(--mono); font-size:0.72rem; letter-spacing:0.08em; color:var(--muted);
}
.foot-links a:hover{ color:var(--accent); }
.copyright{
  font-family:var(--mono); font-size:0.68rem; color:var(--muted); opacity:0.7;
}

@media (max-width:800px){
  .article-grid{ grid-template-columns:1fr; }
  .site-nav{ display:none; }
}