/* ===== RESET & BASE ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0a0b0d;
  --bg-card:#111318;
  --bg-card-hover:#181b22;
  --bg-surface:#14161c;
  --border:#1e2028;
  --border-hover:#2a2d38;
  --text:#e4e5e9;
  --text-muted:#8a8d98;
  --text-dim:#5c5f6a;
  --accent:#3b82f6;
  --accent-dim:#1e3a5f;
  --green:#22c55e;
  --green-dim:#0a3520;
  --amber:#f59e0b;
  --amber-dim:#3d2800;
  --red:#ef4444;
  --font-body:'DM Sans',system-ui,-apple-system,sans-serif;
  --font-display:'Instrument Sans','DM Sans',system-ui,sans-serif;
  --font-mono:'JetBrains Mono','Fira Code',monospace;
  --radius:8px;
  --radius-lg:12px;
  --shadow:0 1px 3px rgba(0,0,0,.4),0 1px 2px rgba(0,0,0,.3);
  --shadow-lg:0 10px 40px rgba(0,0,0,.5);
  --transition:180ms ease;
  --max-w:1280px;
}
html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:var(--accent);text-decoration:none;transition:color var(--transition)}
a:hover{color:#60a5fa}
img{max-width:100%;display:block}

/* ===== LAYOUT ===== */
.container{width:100%;max-width:var(--max-w);margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

/* ===== HEADER ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(10,11,13,.85);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:64px;
}
.logo{
  font-family:var(--font-display);
  font-size:1.15rem;font-weight:700;
  color:var(--text);letter-spacing:-.02em;
  display:flex;align-items:center;gap:8px;
}
.logo-mark{
  width:28px;height:28px;border-radius:6px;
  background:linear-gradient(135deg,var(--accent),#8b5cf6);
  display:grid;place-items:center;
  font-size:.75rem;font-weight:800;color:#fff;
}
.nav-list{display:flex;gap:4px;list-style:none}
.nav-list a{
  display:block;padding:8px 14px;border-radius:6px;
  font-size:.875rem;font-weight:500;color:var(--text-muted);
  transition:all var(--transition);
}
.nav-list a:hover,.nav-list a[aria-current="page"]{color:var(--text);background:var(--bg-surface)}
.mobile-toggle{display:none;background:none;border:none;color:var(--text);cursor:pointer;padding:8px}
.mobile-toggle svg{width:24px;height:24px}

/* ===== HERO ===== */
.hero{
  padding:80px 0 48px;
  text-align:center;
  position:relative;
}
.hero::before{
  content:'';position:absolute;top:-80px;left:50%;transform:translateX(-50%);
  width:600px;height:600px;
  background:radial-gradient(circle,rgba(59,130,246,.08) 0%,transparent 70%);
  pointer-events:none;
}
.hero h1{
  font-family:var(--font-display);
  font-size:clamp(2rem,5vw,3.25rem);
  font-weight:800;letter-spacing:-.03em;
  line-height:1.15;
  color:#fff;
  margin-bottom:16px;
}
.hero h1 span{
  background:linear-gradient(135deg,var(--accent),#a78bfa);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero p{
  font-size:1.1rem;color:var(--text-muted);
  max-width:640px;margin:0 auto 32px;line-height:1.65;
}
.hero-stats{
  display:flex;justify-content:center;gap:40px;
  margin-bottom:40px;
}
.hero-stat{text-align:center}
.hero-stat strong{
  display:block;font-family:var(--font-display);
  font-size:1.75rem;font-weight:800;color:#fff;
}
.hero-stat span{font-size:.8rem;color:var(--text-dim);text-transform:uppercase;letter-spacing:.08em}

/* ===== TOOLBAR ===== */
.toolbar{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;
  padding:20px 0;
  border-bottom:1px solid var(--border);
  margin-bottom:24px;
}
.search-box{
  flex:1;min-width:240px;position:relative;
}
.search-box input{
  width:100%;padding:10px 14px 10px 40px;
  background:var(--bg-surface);border:1px solid var(--border);
  border-radius:var(--radius);color:var(--text);
  font-size:.9rem;font-family:var(--font-body);
  transition:border-color var(--transition);
}
.search-box input:focus{outline:none;border-color:var(--accent)}
.search-box input::placeholder{color:var(--text-dim)}
.search-box svg{
  position:absolute;left:12px;top:50%;transform:translateY(-50%);
  width:18px;height:18px;color:var(--text-dim);pointer-events:none;
}
.filter-group{display:flex;gap:6px;flex-wrap:wrap}
.filter-btn{
  padding:7px 14px;border-radius:20px;
  background:var(--bg-surface);border:1px solid var(--border);
  color:var(--text-muted);font-size:.8rem;font-weight:500;
  cursor:pointer;transition:all var(--transition);
  white-space:nowrap;font-family:var(--font-body);
}
.filter-btn:hover{border-color:var(--border-hover);color:var(--text)}
.filter-btn.active{background:var(--accent-dim);border-color:var(--accent);color:var(--accent)}
.result-count{
  font-size:.8rem;color:var(--text-dim);
  margin-left:auto;white-space:nowrap;
  font-family:var(--font-mono);
}

/* ===== FIRM GRID ===== */
.firms-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:16px;
  padding-bottom:48px;
}
.firm-card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:20px;
  transition:all var(--transition);
  display:flex;flex-direction:column;
  position:relative;
}
.firm-card:hover{
  border-color:var(--border-hover);
  background:var(--bg-card-hover);
  transform:translateY(-2px);
  box-shadow:var(--shadow-lg);
}
.firm-card-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:12px}
.firm-name{
  font-family:var(--font-display);
  font-size:.95rem;font-weight:700;color:#fff;
  line-height:1.3;
}
.firm-name a{color:inherit;transition:color var(--transition)}
.firm-name a:hover{color:var(--accent)}
.firm-type{
  font-size:.65rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;
  padding:3px 8px;border-radius:4px;
  white-space:nowrap;flex-shrink:0;margin-left:8px;
}
.type-quant{background:var(--accent-dim);color:var(--accent)}
.type-retail{background:var(--green-dim);color:var(--green)}
.type-futures{background:var(--amber-dim);color:var(--amber)}
.firm-meta{
  display:flex;flex-wrap:wrap;gap:6px;
  margin-bottom:12px;
}
.firm-tag{
  font-size:.72rem;color:var(--text-dim);
  padding:2px 8px;border-radius:4px;
  background:rgba(255,255,255,.04);
  white-space:nowrap;
}
.firm-desc{
  font-size:.82rem;color:var(--text-muted);
  line-height:1.55;flex:1;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.firm-footer{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:14px;padding-top:12px;
  border-top:1px solid var(--border);
}
.firm-link{
  font-size:.78rem;font-weight:600;
  color:var(--accent);
  display:inline-flex;align-items:center;gap:4px;
}
.firm-link svg{width:14px;height:14px;transition:transform var(--transition)}
.firm-link:hover svg{transform:translateX(3px)}
.firm-locations{
  font-size:.72rem;color:var(--text-dim);
  display:flex;align-items:center;gap:4px;
  max-width:60%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ===== SECTIONS ===== */
.section{padding:48px 0}
.section-header{
  display:flex;align-items:baseline;justify-content:space-between;
  margin-bottom:24px;
}
.section-title{
  font-family:var(--font-display);
  font-size:1.5rem;font-weight:700;color:#fff;
  letter-spacing:-.02em;
}
.section-subtitle{font-size:.85rem;color:var(--text-dim)}

/* ===== NAV PAGES ===== */
.pages-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
  gap:12px;
}
.page-link{
  display:flex;align-items:center;gap:14px;
  padding:16px 20px;border-radius:var(--radius-lg);
  background:var(--bg-card);border:1px solid var(--border);
  transition:all var(--transition);
  color:var(--text);
}
.page-link:hover{border-color:var(--accent);background:var(--bg-card-hover);color:#fff}
.page-icon{
  width:40px;height:40px;border-radius:8px;
  background:var(--bg-surface);
  display:grid;place-items:center;flex-shrink:0;
  font-size:1.1rem;
}
.page-link:hover .page-icon{background:var(--accent-dim)}
.page-info{flex:1;min-width:0}
.page-info strong{display:block;font-size:.9rem;font-weight:600}
.page-info span{font-size:.75rem;color:var(--text-dim)}

/* ===== FAQ ===== */
.faq-list{max-width:800px}
.faq-item{border-bottom:1px solid var(--border)}
.faq-q{
  width:100%;padding:18px 0;
  background:none;border:none;color:var(--text);
  font-size:.95rem;font-weight:600;font-family:var(--font-body);
  text-align:left;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-q::after{
  content:'+';font-size:1.25rem;color:var(--text-dim);
  transition:transform var(--transition);flex-shrink:0;
}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease,padding .3s ease;
}
.faq-item.open .faq-a{max-height:300px;padding-bottom:18px}
.faq-a p{font-size:.88rem;color:var(--text-muted);line-height:1.65}

/* ===== FOOTER ===== */
.site-footer{
  border-top:1px solid var(--border);
  padding:40px 0;margin-top:48px;
}
.footer-inner{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:32px;
}
.footer-brand{max-width:360px}
.footer-brand p{font-size:.82rem;color:var(--text-dim);margin-top:12px;line-height:1.6}
.footer-links{display:flex;gap:48px}
.footer-col h4{
  font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;
  color:var(--text-dim);margin-bottom:12px;font-weight:600;
}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:8px}
.footer-col a{font-size:.85rem;color:var(--text-muted);transition:color var(--transition)}
.footer-col a:hover{color:var(--text)}
.footer-bottom{
  margin-top:32px;padding-top:24px;
  border-top:1px solid var(--border);
  display:flex;flex-wrap:wrap;justify-content:space-between;
  font-size:.75rem;color:var(--text-dim);gap:12px;
}

/* ===== EMPTY STATE ===== */
.no-results{
  grid-column:1/-1;text-align:center;padding:64px 24px;
  color:var(--text-dim);
}
.no-results strong{display:block;font-size:1.1rem;color:var(--text-muted);margin-bottom:8px}

/* ===== BACK TO TOP ===== */
.back-top{
  position:fixed;bottom:24px;right:24px;z-index:50;
  width:44px;height:44px;border-radius:50%;
  background:var(--bg-card);border:1px solid var(--border);
  display:grid;place-items:center;
  cursor:pointer;opacity:0;pointer-events:none;
  transition:all var(--transition);
  color:var(--text-muted);
}
.back-top.visible{opacity:1;pointer-events:auto}
.back-top:hover{border-color:var(--accent);color:var(--accent)}
.back-top svg{width:20px;height:20px}

/* ===== RESPONSIVE ===== */
@media(max-width:768px){
  .header-inner{height:56px}
  .nav-list{
    display:none;position:fixed;top:56px;left:0;right:0;bottom:0;
    flex-direction:column;background:var(--bg);padding:16px;
    border-top:1px solid var(--border);z-index:99;gap:2px;
  }
  .nav-list.open{display:flex}
  .mobile-toggle{display:block}
  .hero{padding:48px 0 32px}
  .hero h1{font-size:1.75rem}
  .hero-stats{gap:24px}
  .hero-stat strong{font-size:1.35rem}
  .toolbar{flex-direction:column;align-items:stretch}
  .search-box{min-width:0}
  .filter-group{overflow-x:auto;flex-wrap:nowrap;-webkit-overflow-scrolling:touch;padding-bottom:4px}
  .result-count{margin-left:0;text-align:right}
  .firms-grid{grid-template-columns:1fr}
  .footer-links{gap:32px}
  .pages-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
  .container{padding:0 16px}
  .hero-stats{flex-direction:column;gap:12px}
}

/* ===== ANIMATIONS ===== */
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
.firm-card{animation:fadeUp .35s ease both}
.firms-grid .firm-card:nth-child(n+1){animation-delay:0s}

/* Stagger only first batch */
.firms-grid .firm-card:nth-child(1){animation-delay:.02s}
.firms-grid .firm-card:nth-child(2){animation-delay:.04s}
.firms-grid .firm-card:nth-child(3){animation-delay:.06s}
.firms-grid .firm-card:nth-child(4){animation-delay:.08s}
.firms-grid .firm-card:nth-child(5){animation-delay:.1s}
.firms-grid .firm-card:nth-child(6){animation-delay:.12s}
.firms-grid .firm-card:nth-child(7){animation-delay:.14s}
.firms-grid .firm-card:nth-child(8){animation-delay:.16s}