/* ============================================================
   NEXT STEP VENTURES — blog shared styles
   Matches the finance-tech system on the landing page.
   ============================================================ */
:root{
  --bg:      #0a0d12;
  --bg-2:    #0e1219;
  --bg-3:    #131824;
  --line:    rgba(230,234,242,.08);
  --line-2:  rgba(230,234,242,.14);
  --txt:     #e6eaf2;
  --soft:    #8a93a6;
  --dim:     #5b6474;
  --green:   #3ce08c;
  --green-bg:rgba(60,224,140,.07);
  --ease:    cubic-bezier(.16,1,.3,1);
  --nav-h:   64px;
  --gutter:  clamp(20px,4.5vw,64px);
  --r:        3px;
  --ink:      #07100b;
  --nav-bg:   rgba(10,13,18,.88);
  --grid:     rgba(230,234,242,.022);
  --hover:    rgba(230,234,242,.02);
  --prose:    #c3c9d5;
  --green-h:  #5cf0a6;
}
/* ---------- LIGHT THEME (cream) ---------- */
:root[data-theme="light"]{
  --bg:      #f4efe3;
  --bg-2:    #efe8d9;
  --bg-3:    #e7dfcd;
  --line:    rgba(28,36,48,.12);
  --line-2:  rgba(28,36,48,.22);
  --txt:     #1b2230;
  --soft:    #55606f;
  --dim:     #8a8f9b;
  --green:   #0f9d5e;
  --green-bg:rgba(15,157,94,.10);
  --ink:     #ffffff;
  --nav-bg:  rgba(244,239,227,.85);
  --grid:    rgba(30,40,55,.05);
  --hover:   rgba(20,25,35,.035);
  --prose:   #34404e;
  --green-h: #12b46c;
  color-scheme: light;
}
/* keep data-viz figures on their designed dark canvas in both themes */
:root[data-theme="light"] .fig{
  --bg-2:#0e1219; --bg-3:#131824;
  --line:rgba(230,234,242,.08); --line-2:rgba(230,234,242,.14);
  --txt:#e6eaf2; --soft:#8a93a6; --dim:#5b6474; --prose:#c3c9d5;
  --green:#3ce08c; --green-bg:rgba(60,224,140,.07);
  background:#0e1219; border-color:rgba(20,25,35,.16);
}
*,*::before,*::after{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; }
body{
  background:var(--bg); color:var(--txt);
  font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;
  font-size:16px; font-weight:450; line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
::selection{ background:var(--green); color:var(--bg); }
a{ color:inherit; }
img{ max-width:100%; display:block; }

body::before{
  content:''; position:fixed; inset:0; z-index:0; pointer-events:none;
  background:
    linear-gradient(var(--grid) 1px, transparent 1px) 0 0 / 96px 96px,
    linear-gradient(90deg, var(--grid) 1px, transparent 1px) 0 0 / 96px 96px;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 75%);
}
main{ position:relative; z-index:1; }

.mono{
  font-family:'JetBrains Mono',monospace;
  font-size:11px; font-weight:500;
  letter-spacing:.14em; text-transform:uppercase;
}
.display{
  font-family:'Space Grotesk',sans-serif;
  font-weight:500; letter-spacing:-.025em; line-height:1.1;
}
.acc{ color:var(--green); }

/* ---------- nav ---------- */
.progress{ position:fixed; top:0; left:0; height:2px; width:0%; background:var(--green); z-index:101; }
.nav{
  position:fixed; top:0; left:0; right:0; z-index:100; height:var(--nav-h);
  display:flex; align-items:center; border-bottom:1px solid transparent;
  transition:background .4s var(--ease), border-color .4s var(--ease);
}
.nav.scrolled{
  background:var(--nav-bg);
  -webkit-backdrop-filter:blur(14px); backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.nav-inner{
  width:100%; max-width:1360px; margin:0 auto; padding-inline:var(--gutter);
  display:flex; align-items:center; justify-content:space-between; gap:20px;
}
.brand{ display:flex; align-items:center; gap:10px; text-decoration:none; }
.brand-name{
  font-family:'Space Grotesk',sans-serif; font-weight:600; font-size:15px;
  letter-spacing:-.01em; white-space:nowrap;
}
.brand-name span{ color:var(--soft); font-weight:400; }
.nav-links{ display:flex; align-items:center; gap:clamp(14px,2vw,26px); list-style:none; }
.nav-links a{
  text-decoration:none; font-family:'JetBrains Mono',monospace;
  font-size:11px; font-weight:500; letter-spacing:.1em; text-transform:uppercase;
  color:var(--soft); transition:color .25s;
}
.nav-links a:hover, .nav-links a.active{ color:var(--green); }
.btn{
  display:inline-flex; align-items:center; gap:9px; padding:10px 18px; border-radius:3px;
  font-family:'JetBrains Mono',monospace; font-size:11px; font-weight:500;
  letter-spacing:.08em; text-transform:uppercase; text-decoration:none; cursor:pointer;
  background:var(--green); color:var(--ink); border:1px solid transparent;
  transition:background .3s, box-shadow .3s; white-space:nowrap;
}
.btn:hover{ background:var(--green-h); box-shadow:0 0 24px rgba(60,224,140,.25); }

/* theme toggle */
.theme-toggle{
  display:inline-flex; align-items:center; justify-content:center;
  width:36px; height:36px; flex:0 0 auto; padding:0;
  background:transparent; border:1px solid var(--line-2); border-radius:3px;
  color:var(--soft); cursor:pointer;
  transition:color .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
}
.theme-toggle:hover{ color:var(--green); border-color:var(--green); background:var(--green-bg); }
.theme-toggle svg{ width:16px; height:16px; display:block; }
.theme-toggle .ic-moon{ display:none; }
:root[data-theme="light"] .theme-toggle .ic-sun{ display:none; }
:root[data-theme="light"] .theme-toggle .ic-moon{ display:block; }
@media (max-width: 860px){ .nav-links{ display:none; } }

/* ---------- article layout ---------- */
.post{ padding:calc(var(--nav-h) + clamp(48px,8vw,96px)) 0 clamp(70px,9vw,110px); }
.post-wrap{ max-width:820px; margin:0 auto; padding-inline:var(--gutter); }
.post-wide{ max-width:1000px; margin-inline:auto; }
.crumb{
  display:inline-flex; align-items:center; gap:8px; text-decoration:none;
  color:var(--dim); margin-bottom:34px; transition:color .25s;
}
.crumb:hover{ color:var(--green); }
.post-meta{
  display:flex; flex-wrap:wrap; gap:12px 20px; align-items:center;
  color:var(--soft); margin-bottom:22px;
}
.post-meta .tag{
  color:var(--green); border:1px solid rgba(60,224,140,.3); background:var(--green-bg);
  padding:4px 10px; border-radius:3px;
}
.post h1{
  font-size:clamp(30px,4.6vw,52px);
  margin-bottom:22px; max-width:24ch;
}
.standfirst{
  font-size:clamp(17px,1.6vw,20px); line-height:1.6; color:var(--soft);
  border-left:2px solid var(--green); padding-left:20px;
  margin-bottom:clamp(38px,5vw,56px); max-width:62ch;
}
.post-rule{ border:0; border-top:1px solid var(--line); margin:clamp(38px,5vw,56px) 0; }

/* prose */
.prose > p{ margin-bottom:1.4em; color:var(--prose); max-width:70ch; }
.prose > p strong, .prose li strong{ color:var(--txt); font-weight:600; }
.prose h2{
  font-family:'Space Grotesk',sans-serif; font-weight:500; letter-spacing:-.02em;
  font-size:clamp(21px,2.4vw,28px); line-height:1.25;
  margin:clamp(44px,5.5vw,60px) 0 18px;
}
.prose h2 .n{
  font-family:'JetBrains Mono',monospace; font-size:.55em; font-weight:500;
  letter-spacing:.1em; color:var(--green); display:block; margin-bottom:8px;
}
.prose h3{
  font-family:'Space Grotesk',sans-serif; font-weight:500; letter-spacing:-.015em;
  font-size:18px; margin:32px 0 12px;
}
.prose ul, .prose ol{ margin:0 0 1.5em 1.2em; color:var(--prose); max-width:66ch; }
.prose li{ margin-bottom:.6em; padding-left:6px; }
.prose ul li::marker{ color:var(--green); }
.prose ol li::marker{ color:var(--green); font-family:'JetBrains Mono',monospace; font-size:.85em; }
.prose a{ color:var(--green); text-decoration:none; border-bottom:1px solid rgba(60,224,140,.35); transition:border-color .25s; }
.prose a:hover{ border-color:var(--green); }
.prose em{ color:var(--txt); }
sup.cite{ line-height:0; }
sup.cite a{
  font-family:'JetBrains Mono',monospace; font-size:10.5px; color:var(--green);
  text-decoration:none; border:0; padding:0 1px;
}
sup.cite a:hover{ text-decoration:underline; }

/* pull quote */
.pull{
  border:1px solid var(--line); border-left:2px solid var(--green);
  background:var(--bg-2); border-radius:3px;
  padding:clamp(20px,3vw,30px); margin:clamp(30px,4vw,42px) 0;
  font-family:'Space Grotesk',sans-serif; font-weight:500; letter-spacing:-.015em;
  font-size:clamp(17px,1.9vw,22px); line-height:1.5; color:var(--txt);
  max-width:none;
}
.pull .who{ display:block; margin-top:14px; font-family:'JetBrains Mono',monospace; font-size:10.5px; letter-spacing:.12em; text-transform:uppercase; color:var(--dim); }

/* callout */
.callout{
  border:1px solid var(--line); border-radius:3px; background:var(--bg-2);
  padding:20px 22px; margin:28px 0; font-size:14.5px; color:var(--soft);
}
.callout .mono{ color:var(--green); display:block; margin-bottom:8px; }

/* figures */
.fig{
  margin:clamp(32px,4.5vw,48px) 0;
  border:1px solid var(--line); border-radius:3px; background:var(--bg-2);
  overflow:hidden;
}
.fig-body{ padding:clamp(18px,3vw,32px); }
.fig svg{ display:block; width:100%; height:auto; }
.fig-cap{
  border-top:1px solid var(--line); padding:12px 18px;
  font-family:'JetBrains Mono',monospace; font-size:10.5px; letter-spacing:.08em;
  text-transform:uppercase; color:var(--dim); line-height:1.7;
}
.fig-cap a{ color:var(--soft); }
.fig-cap a:hover{ color:var(--green); }
svg .s-lbl{ font-family:'JetBrains Mono',monospace; font-size:10px; letter-spacing:.08em; fill:#8a93a6; text-transform:uppercase; }
svg .s-lbl-b{ font-family:'JetBrains Mono',monospace; font-size:10px; letter-spacing:.08em; fill:#e6eaf2; }
svg .s-big{ font-family:'Space Grotesk',sans-serif; font-weight:600; fill:#e6eaf2; }
svg .s-green{ fill:#3ce08c; }
svg .s-dim{ fill:#5b6474; }

/* video embed */
.video{
  position:relative; margin:clamp(32px,4.5vw,48px) 0;
  border:1px solid var(--line); border-radius:3px; overflow:hidden; background:var(--bg-2);
}
.video .frame{ position:relative; padding-top:56.25%; }
.video iframe{ position:absolute; inset:0; width:100%; height:100%; border:0; }
.video .fig-cap{ border-top:1px solid var(--line); }

/* tables */
.tbl-wrap{ margin:clamp(32px,4.5vw,48px) 0; border:1px solid var(--line); border-radius:3px; overflow-x:auto; background:var(--bg-2); }
table.tbl{ width:100%; border-collapse:collapse; font-size:13.5px; min-width:560px; }
.tbl th{
  font-family:'JetBrains Mono',monospace; font-size:10px; font-weight:500;
  letter-spacing:.12em; text-transform:uppercase; color:var(--green);
  text-align:left; padding:13px 16px; border-bottom:1px solid var(--line-2);
  background:rgba(60,224,140,.04); white-space:nowrap;
}
.tbl td{ padding:13px 16px; border-bottom:1px solid var(--line); color:var(--prose); vertical-align:top; line-height:1.55; }
.tbl tr:last-child td{ border-bottom:0; }
.tbl td:first-child{ color:var(--txt); font-weight:500; white-space:nowrap; }
.tbl .mono-cell{ font-family:'JetBrains Mono',monospace; font-size:12px; color:var(--soft); }

/* prompt block */
.prompt-block{
  font-family:'JetBrains Mono',monospace; font-size:13px; line-height:1.75;
  background:#0b0f15; border:1px solid var(--line); border-left:2px solid var(--green);
  border-radius:3px; padding:18px 20px; margin:24px 0; color:#b9c1d0;
  white-space:pre-wrap;
}
.prompt-block .pb-label{
  display:block; font-size:10px; letter-spacing:.14em; text-transform:uppercase;
  color:var(--green); margin-bottom:10px;
}

/* sources */
.sources{ margin-top:clamp(48px,6vw,72px); border-top:1px solid var(--line-2); padding-top:30px; }
.sources h2{
  font-family:'JetBrains Mono',monospace; font-size:12px; font-weight:500;
  letter-spacing:.16em; text-transform:uppercase; color:var(--green); margin-bottom:20px;
}
.sources ol{ list-style:none; counter-reset:src; }
.sources li{
  counter-increment:src; position:relative; padding:0 0 14px 44px;
  font-size:13.5px; color:var(--soft); line-height:1.65;
}
.sources li::before{
  content:'[' counter(src) ']'; position:absolute; left:0; top:0;
  font-family:'JetBrains Mono',monospace; font-size:11px; color:var(--green);
}
.sources li em{ color:var(--txt); font-style:italic; }
.sources a{ color:var(--soft); text-decoration:none; border-bottom:1px solid var(--line-2); overflow-wrap:anywhere; transition:color .25s, border-color .25s; }
.sources a:hover{ color:var(--green); border-color:var(--green); }

/* author card */
.author{
  margin-top:clamp(40px,5vw,56px); border:1px solid var(--line); border-radius:3px;
  background:var(--bg-2); padding:24px; display:flex; gap:18px; align-items:flex-start; flex-wrap:wrap;
}
.author .avatar{
  width:52px; height:52px; border-radius:3px; background:var(--green-bg);
  border:1px solid rgba(60,224,140,.3); display:flex; align-items:center; justify-content:center;
  font-family:'Space Grotesk',sans-serif; font-weight:600; color:var(--green); font-size:17px;
  flex:0 0 auto;
}
.author .who{ flex:1; min-width:220px; }
.author .who b{ display:block; font-family:'Space Grotesk',sans-serif; font-weight:500; font-size:16px; letter-spacing:-.01em; }
.author .who p{ font-size:13.5px; color:var(--soft); margin-top:6px; max-width:52ch; }
.author .who a{ color:var(--green); text-decoration:none; }
.author .who a:hover{ text-decoration:underline; }

/* prev / next */
.post-nav{
  margin-top:clamp(40px,5vw,56px); display:grid; grid-template-columns:1fr 1fr; gap:1px;
  background:var(--line); border:1px solid var(--line); border-radius:3px; overflow:hidden;
}
.post-nav a{
  background:var(--bg-2); padding:22px; text-decoration:none; display:block;
  transition:background .3s;
}
.post-nav a:hover{ background:var(--bg-3); }
.post-nav .dir{ display:block; color:var(--dim); margin-bottom:10px; }
.post-nav .ttl{
  font-family:'Space Grotesk',sans-serif; font-weight:500; font-size:15.5px;
  letter-spacing:-.015em; line-height:1.35; color:var(--txt);
}
.post-nav a:hover .ttl{ color:var(--green); }
.post-nav .next{ text-align:right; }
.post-nav .empty{ background:var(--bg-2); pointer-events:none; }
@media (max-width: 640px){ .post-nav{ grid-template-columns:1fr; } }

/* ---------- blog index ---------- */
.blog-index{ padding:calc(var(--nav-h) + clamp(48px,8vw,96px)) 0 clamp(70px,9vw,110px); }
.blog-index .head{ max-width:1000px; margin:0 auto clamp(40px,6vw,64px); padding-inline:var(--gutter); }
.blog-index h1{ font-size:clamp(34px,5.4vw,64px); margin:14px 0 16px; }
.blog-index .head p{ color:var(--soft); max-width:58ch; }
.post-list{ max-width:1000px; margin:0 auto; padding-inline:var(--gutter); }
.post-row{
  display:grid; grid-template-columns:150px 1fr auto; gap:20px; align-items:baseline;
  padding:26px 4px; border-top:1px solid var(--line); text-decoration:none;
  transition:background .3s;
}
.post-row:last-child{ border-bottom:1px solid var(--line); }
.post-row:hover{ background:var(--hover); }
.post-row .date{ color:var(--dim); }
.post-row .ttl{
  font-family:'Space Grotesk',sans-serif; font-weight:500; letter-spacing:-.018em;
  font-size:clamp(18px,2.2vw,24px); line-height:1.3; color:var(--txt);
  transition:color .25s;
}
.post-row:hover .ttl{ color:var(--green); }
.post-row .sub{ display:block; font-family:'Inter',sans-serif; font-size:13.5px; font-weight:450; letter-spacing:0; color:var(--soft); margin-top:6px; }
.post-row .tag{ color:var(--green); }
.post-row .arr{ color:var(--dim); font-size:18px; transition:transform .3s var(--ease), color .25s; }
.post-row:hover .arr{ transform:translateX(5px); color:var(--green); }
@media (max-width: 700px){
  .post-row{ grid-template-columns:1fr auto; }
  .post-row .date{ grid-column:1 / -1; }
}

/* footer */
.footer{ border-top:1px solid var(--line); padding:28px 0 34px; position:relative; z-index:1; }
.footer-inner{
  max-width:1360px; margin:0 auto; padding-inline:var(--gutter);
  display:flex; justify-content:space-between; align-items:center; gap:16px; flex-wrap:wrap;
}
.footer .mono{ color:var(--dim); letter-spacing:.1em; }
.footer-links{ display:flex; gap:22px; }
.footer-links a{
  color:var(--soft); text-decoration:none; font-family:'JetBrains Mono',monospace;
  font-size:11px; letter-spacing:.04em; transition:color .3s;
}
.footer-links a:hover{ color:var(--green); }

/* reveal */
[data-reveal]{ opacity:0; transform:translateY(18px); transition:opacity .8s var(--ease), transform .8s var(--ease); }
[data-reveal].in{ opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce){
  [data-reveal]{ opacity:1; transform:none; transition:none; }
  html{ scroll-behavior:auto; }
}