/* ================================================================
   The Tech Finance Operator — site styles
   Derived from the book's own design system. The site is the dark
   inside cover; sample content appears as lit pages within it.
   ================================================================ */

@font-face{font-family:Bricolage;src:url(fonts/bricolage-grotesque-latin-400-normal.woff2) format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:Bricolage;src:url(fonts/bricolage-grotesque-latin-600-normal.woff2) format('woff2');font-weight:600;font-display:swap}
@font-face{font-family:Bricolage;src:url(fonts/bricolage-grotesque-latin-700-normal.woff2) format('woff2');font-weight:700;font-display:swap}
@font-face{font-family:PlexMono;src:url(fonts/ibm-plex-mono-latin-400-normal.woff2) format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:PlexMono;src:url(fonts/ibm-plex-mono-latin-600-normal.woff2) format('woff2');font-weight:600;font-display:swap}
@font-face{font-family:PlexSans;src:url(fonts/instrument-sans-latin-400-normal.woff2) format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:PlexSans;src:url(fonts/instrument-sans-latin-400-italic.woff2) format('woff2');font-weight:400;font-style:italic;font-display:swap}
@font-face{font-family:PlexSans;src:url(fonts/instrument-sans-latin-500-normal.woff2) format('woff2');font-weight:500;font-display:swap}
@font-face{font-family:PlexSans;src:url(fonts/instrument-sans-latin-600-normal.woff2) format('woff2');font-weight:600;font-display:swap}
@font-face{font-family:PlexSans;src:url(fonts/instrument-sans-latin-700-normal.woff2) format('woff2');font-weight:700;font-display:swap}

:root{
  --ink:#0B1F1C; --ink-2:#0F2A25; --ink-3:#16352E;
  --paper:#F2EFE6; --paper-2:#E7E3D6;
  --primary:#0F5C4A; --primary-lt:#2E8A71;
  --signal:#C6F24E; --cyan:#4EC8E8; --alert:#FF7A5C;
  --muted:#8FA39C; --muted-2:#6E827B;
  --rule:rgba(242,239,230,.14);
  --maxw:1140px;
  --pad:clamp(20px,5vw,40px);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation:none!important;transition:none!important}
}
body{
  margin:0; background:var(--ink); color:#DCE5E1;
  font-family:PlexSans,system-ui,sans-serif; font-size:16px; line-height:1.62;
  font-variant-numeric:tabular-nums; -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--signal);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px;border-radius:2px}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}
.narrow{max-width:760px}

/* ---------------- type ---------------- */
h1,h2,h3{font-family:Bricolage;font-weight:700;letter-spacing:-.02em;line-height:1.05;margin:0}
h1{font-size:clamp(34px,5.6vw,62px)}
h2{font-size:clamp(26px,3.6vw,40px)}
h3{font-size:clamp(18px,2vw,23px);letter-spacing:-.01em}
p{margin:0 0 14px}
.eyebrow{
  font-family:PlexMono;font-size:11px;font-weight:600;letter-spacing:.24em;
  text-transform:uppercase;color:var(--signal);margin:0 0 14px
}
.eyebrow.q{color:var(--muted)}
.lede{font-size:clamp(17px,2vw,20px);line-height:1.5;color:#B9CCC5}
.small{font-size:14px;color:var(--muted)}
.mono{font-family:PlexMono}

/* ---------------- header ---------------- */
.site-head{
  position:sticky;top:0;z-index:60;background:rgba(11,31,28,.93);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--rule)
}
.site-head .bar{display:flex;align-items:center;gap:22px;height:62px}
.brand{font-family:Bricolage;font-weight:700;font-size:17px;color:var(--paper);letter-spacing:-.02em}
.brand:hover{text-decoration:none}
.brand span{color:var(--signal)}
.nav{display:flex;gap:20px;margin-left:auto;align-items:center}
.nav a{font-family:PlexMono;font-size:12.5px;letter-spacing:.06em;color:#A9BDB6;text-transform:uppercase}
.nav a:hover{color:var(--paper);text-decoration:none}
.nav .btn{margin-left:4px}
@media(max-width:860px){.nav a.hide-sm{display:none}}

/* ---------------- buttons ---------------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;font-family:PlexMono;font-size:13px;
  font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:13px 22px;
  border:1.5px solid transparent;cursor:pointer;transition:transform .12s ease,background .15s ease
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--signal);color:var(--ink);border-color:var(--signal)}
.btn-primary:hover{background:#d4ff62}
.btn-ghost{background:transparent;color:var(--paper);border-color:rgba(242,239,230,.32)}
.btn-ghost:hover{border-color:var(--signal);color:var(--signal)}
.btn-sm{padding:9px 15px;font-size:12px}
.btn-block{width:100%;justify-content:center}

/* ---------------- sections ---------------- */
.sec{padding:clamp(56px,8vw,104px) 0;border-top:1px solid var(--rule)}
.sec-head{max-width:760px;margin-bottom:38px}
.sec-head p{color:#A9BDB6;margin-top:14px}

/* ---------------- hero ---------------- */
.hero{padding:clamp(48px,7vw,88px) 0 clamp(40px,6vw,72px);position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:clamp(28px,4vw,60px);align-items:center}
@media(max-width:940px){.hero-grid{grid-template-columns:1fr;gap:34px}}
.hero h1{color:var(--paper);margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--signal)}
.hero .lede{max-width:38ch}
.badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.badge{
  font-family:PlexMono;font-size:11px;letter-spacing:.1em;text-transform:uppercase;
  padding:5px 10px;border:1px solid var(--rule);color:var(--muted)
}
.badge.on{border-color:var(--primary-lt);color:var(--signal)}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin:26px 0 14px}
.cta-note{font-size:13px;color:var(--muted-2)}

/* spec strip — the book's caption register */
.spec{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--rule);margin-top:34px}
@media(max-width:700px){.spec{grid-template-columns:repeat(3,1fr)}}
.spec div{padding:16px 10px 0;border-right:1px solid var(--rule)}
.spec div:last-child{border-right:0}
.spec b{display:block;font-family:Bricolage;font-size:clamp(22px,3vw,30px);color:var(--paper);line-height:1}
.spec span{font-family:PlexMono;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted-2);display:block;margin-top:7px}

/* figure frame — a lit page object */
.figframe{background:var(--paper);padding:20px 20px 14px;box-shadow:0 24px 60px rgba(0,0,0,.45)}
.figframe svg{width:100%;height:auto;display:block}
.figframe .cap{
  font-family:PlexMono;font-size:10.5px;color:#7d8a84;border-top:1px solid #d8d2c2;
  margin-top:12px;padding-top:9px;line-height:1.45
}
.figframe .cap b{color:var(--primary)}

/* ---------------- generic cards / grids ---------------- */
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.g2,.g3,.g4{grid-template-columns:1fr}}

.card{background:var(--ink-2);border:1px solid var(--rule);padding:24px}
.card h3{color:var(--paper);margin-bottom:9px}
.card p{color:#A9BDB6;font-size:15px;margin:0}
.card .n{font-family:PlexMono;font-size:11px;letter-spacing:.16em;color:var(--signal);display:block;margin-bottom:12px}

/* audience filter */
.filter{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--rule)}
@media(max-width:760px){.filter{grid-template-columns:1fr}}
.filter>div{padding:28px}
.filter>div:first-child{border-right:1px solid var(--rule);background:var(--ink-2)}
@media(max-width:760px){.filter>div:first-child{border-right:0;border-bottom:1px solid var(--rule)}}
.filter h3{color:var(--paper);margin-bottom:16px;font-size:19px}
.filter ul{list-style:none;margin:0;padding:0}
.filter li{padding:8px 0 8px 26px;position:relative;font-size:15px;color:#B9CCC5;border-bottom:1px solid rgba(242,239,230,.07)}
.filter li:last-child{border-bottom:0}
.filter li::before{position:absolute;left:0;font-family:PlexMono;font-size:13px}
.yes li::before{content:"✓";color:var(--signal)}
.no li::before{content:"×";color:var(--alert)}
.no li{color:var(--muted-2)}

/* parts list */
.parts{border-top:1px solid var(--rule)}
.part-row{display:grid;grid-template-columns:64px 1fr 200px;gap:20px;padding:20px 0;border-bottom:1px solid var(--rule);align-items:baseline}
@media(max-width:760px){.part-row{grid-template-columns:44px 1fr}.part-row .ch{display:none}}
.part-row .rn{font-family:PlexMono;font-size:12px;color:var(--signal);letter-spacing:.1em}
.part-row h3{color:var(--paper);font-size:20px;margin-bottom:5px}
.part-row p{color:var(--muted);font-size:14.5px;margin:0}
.part-row .ch{font-family:PlexMono;font-size:12px;color:var(--muted-2);text-align:right}

/* chapter table */
.chapters{width:100%;border-collapse:collapse;font-size:15px}
.chapters td{padding:9px 10px;border-bottom:1px solid var(--rule);vertical-align:top}
.chapters td:first-child{font-family:PlexMono;font-size:12px;color:var(--muted-2);width:44px}
.chapters tr:hover td{background:var(--ink-2)}
.chapters .ph td{background:var(--ink-3);font-family:PlexMono;font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--signal);padding:12px 10px}

/* look inside */
.shots{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:860px){.shots{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.shots{grid-template-columns:1fr}}
.shot{border:1px solid var(--rule);background:var(--paper);overflow:hidden}
.shot img{transition:transform .4s ease}
.shot:hover img{transform:scale(1.03)}
.shot figcaption{font-family:PlexMono;font-size:11px;letter-spacing:.06em;color:var(--muted);
  padding:11px 13px;background:var(--ink-2);border-top:1px solid var(--rule)}

/* pricing */
.price-card{background:var(--ink-2);border:1px solid var(--primary-lt);padding:clamp(26px,4vw,42px);max-width:560px;margin:0 auto}
.price-top{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding-bottom:22px;border-bottom:1px solid var(--rule);margin-bottom:22px}
.price-num{font-family:Bricolage;font-size:clamp(44px,7vw,60px);color:var(--paper);line-height:1}
.price-num sup{font-size:.42em;vertical-align:super;color:var(--muted);font-weight:400}
.price-card ul{list-style:none;margin:0 0 24px;padding:0}
.price-card li{padding:9px 0 9px 27px;position:relative;font-size:15px;border-bottom:1px solid rgba(242,239,230,.07)}
.price-card li::before{content:"→";position:absolute;left:0;color:var(--signal);font-family:PlexMono;font-size:13px}
.price-card li:last-child{border-bottom:0}

.reassure{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:30px}
@media(max-width:760px){.reassure{grid-template-columns:1fr}}
.reassure div{border-left:2px solid var(--primary-lt);padding:4px 0 4px 15px}
.reassure b{display:block;font-family:PlexMono;font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--signal);margin-bottom:6px}
.reassure p{font-size:13.5px;color:var(--muted);margin:0;line-height:1.5}

/* tools / magnet */
.tool{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--rule);background:var(--ink-2)}
@media(max-width:820px){.tool{grid-template-columns:1fr}}
.tool>div{padding:30px}
.tool>div:first-child{border-right:1px solid var(--rule)}
@media(max-width:820px){.tool>div:first-child{border-right:0;border-bottom:1px solid var(--rule)}}
.tool h3{color:var(--paper);margin-bottom:10px}
.tool ul{margin:14px 0 0;padding-left:18px;color:#A9BDB6;font-size:14.5px}
.tool li{margin-bottom:5px}

/* forms */
.form{display:grid;gap:13px;max-width:460px}
.field label{display:block;font-family:PlexMono;font-size:11px;letter-spacing:.13em;
  text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.field input,.field select,.field textarea{
  width:100%;background:var(--ink);border:1px solid var(--rule);color:var(--paper);
  padding:12px 13px;font-family:PlexSans;font-size:15px
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--primary-lt);outline:none}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--muted)}
.consent input{margin-top:3px;accent-color:var(--signal)}

/* faq */
.faq details{border-bottom:1px solid var(--rule);padding:2px 0}
.faq summary{cursor:pointer;padding:18px 0;font-size:17px;color:var(--paper);
  font-family:Bricolage;font-weight:600;letter-spacing:-.01em;list-style:none;
  display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:PlexMono;color:var(--signal);font-size:20px;flex:none}
.faq details[open] summary::after{content:"−"}
.faq .a{padding:0 0 20px;color:#A9BDB6;font-size:15px;max-width:74ch}
.faq .a p:last-child{margin-bottom:0}

/* legal / prose pages */
.prose{max-width:74ch}
.prose h2{font-size:clamp(21px,2.6vw,27px);color:var(--paper);margin:38px 0 12px}
.prose h3{font-size:18px;color:var(--signal);margin:26px 0 8px}
.prose p,.prose li{color:#B9CCC5;font-size:15.5px}
.prose ul,.prose ol{padding-left:20px;margin-bottom:16px}
.prose li{margin-bottom:7px}
.prose table{width:100%;border-collapse:collapse;font-size:14.5px;margin:16px 0}
.prose th{text-align:left;background:var(--ink-3);color:var(--signal);font-family:PlexMono;
  font-size:11px;letter-spacing:.12em;text-transform:uppercase;padding:10px}
.prose td{padding:10px;border-bottom:1px solid var(--rule);color:#B9CCC5}
.updated{font-family:PlexMono;font-size:12px;color:var(--muted-2);letter-spacing:.06em;
  border-left:2px solid var(--primary-lt);padding-left:13px;margin-bottom:30px}

.callout{border:1px solid var(--rule);border-left:3px solid var(--signal);background:var(--ink-2);
  padding:22px 24px;margin:26px 0}
.callout b{color:var(--signal);font-family:PlexMono;font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;display:block;margin-bottom:9px}
.callout p:last-child{margin-bottom:0}

/* page header for interior pages */
.page-head{padding:clamp(44px,6vw,74px) 0 clamp(26px,3vw,40px);border-bottom:1px solid var(--rule)}
.page-head h1{color:var(--paper);font-size:clamp(30px,4.6vw,50px)}
.page-head p{color:#A9BDB6;margin-top:14px;max-width:64ch}

/* footer */
.site-foot{background:#081815;border-top:1px solid var(--rule);padding:56px 0 30px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.7fr repeat(4,1fr);gap:30px}
@media(max-width:1000px){.foot-grid{grid-template-columns:1fr 1fr 1fr}}
@media(max-width:760px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.foot-grid{grid-template-columns:1fr}}
.foot-grid h4{font-family:PlexMono;font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--signal);margin:0 0 14px}
.foot-grid ul{list-style:none;margin:0;padding:0}
.foot-grid li{margin-bottom:8px}
.foot-grid a{color:var(--muted);font-size:14px}
.foot-grid a:hover{color:var(--paper)}
.foot-bot{border-top:1px solid var(--rule);margin-top:38px;padding-top:22px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-family:PlexMono;font-size:11.5px;color:var(--muted-2);letter-spacing:.05em}

/* misc */
.hr{border:0;border-top:1px solid var(--rule);margin:0}
.center{text-align:center}
.mt0{margin-top:0}
.stack>*+*{margin-top:16px}

/* ---------------- small-screen header ---------------- */
@media(max-width:560px){
  .site-head .bar{height:auto;min-height:58px;padding-top:10px;padding-bottom:10px;gap:12px}
  .brand{font-size:15px;line-height:1.15;max-width:52%}
  .nav .btn{padding:10px 14px;font-size:11.5px}
}

/* skip link — visually hidden until focused */
.skip{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.skip:focus{position:fixed;left:12px;top:12px;width:auto;height:auto;z-index:999;
  background:var(--signal);color:var(--ink);padding:11px 16px;font-family:PlexMono;
  font-size:13px;font-weight:600;letter-spacing:.06em;text-transform:uppercase}