/* ============================================================
   KOR Intelligence — korintel.com
   Direction A: Minimalist Editorial · strict monochrome
   Instrument Serif · Plus Jakarta Sans · IBM Plex Mono
   ============================================================ */

/* ---------- Fonts (self-hosted) ---------- */
@font-face{font-family:'Playfair Display';font-style:normal;font-weight:500;font-display:swap;src:url('../fonts/playfair-display-latin-500-normal.woff2') format('woff2')}
@font-face{font-family:'Playfair Display';font-style:italic;font-weight:500;font-display:swap;src:url('../fonts/playfair-display-latin-500-italic.woff2') format('woff2')}
@font-face{font-family:'Playfair Display';font-style:normal;font-weight:600;font-display:swap;src:url('../fonts/playfair-display-latin-600-normal.woff2') format('woff2')}
@font-face{font-family:'Source Sans 3';font-style:normal;font-weight:400;font-display:swap;src:url('../fonts/source-sans-3-latin-400-normal.woff2') format('woff2')}
@font-face{font-family:'Source Sans 3';font-style:normal;font-weight:600;font-display:swap;src:url('../fonts/source-sans-3-latin-600-normal.woff2') format('woff2')}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;src:url('../fonts/ibm-plex-mono-latin-400-normal.woff2') format('woff2')}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;src:url('../fonts/ibm-plex-mono-latin-500-normal.woff2') format('woff2')}

/* ---------- Tokens ---------- */
:root{
  --bg:#FAF8F2;
  --ink:#17120D;
  --ink-72:rgba(23,18,13,.74);
  --ink-55:rgba(23,18,13,.56);
  --ink-38:rgba(23,18,13,.4);
  --rule:rgba(23,18,13,.3);
  --hairline:rgba(23,18,13,.17);
  --serif:'Playfair Display',Georgia,'Times New Roman',serif;
  --sans:'Source Sans 3',ui-sans-serif,system-ui,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,'SF Mono',monospace;
  --pad:clamp(20px,4.5vw,64px);
  --measure:64ch;
  --ease-out:cubic-bezier(0.16,1,0.3,1);
}
:root[data-theme="dark"]{
  --bg:#17120D;
  --ink:#F4F0E7;
  --ink-72:rgba(244,240,231,.78);
  --ink-55:rgba(244,240,231,.6);
  --ink-38:rgba(244,240,231,.42);
  --rule:rgba(244,240,231,.34);
  --hairline:rgba(244,240,231,.18);
}

/* ---------- Base ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-weight:400;
  font-size:1.0525rem;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  transition:background-color .3s ease,color .3s ease;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
::selection{background:var(--ink);color:var(--bg)}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px}

h1,h2,h3{font-family:var(--serif);font-weight:500;line-height:1.04;letter-spacing:.005em;text-wrap:balance}
em,i{font-family:var(--serif);font-style:italic}
p{text-wrap:pretty}

.container{max-width:1240px;margin-inline:auto;padding-inline:var(--pad)}
.narrow{max-width:1000px}
.eyebrow{font-family:var(--mono);font-size:.7rem;font-weight:500;letter-spacing:.3em;text-transform:uppercase;color:var(--ink-55)}
.lede{font-size:clamp(1.08rem,1.5vw,1.26rem);line-height:1.72;color:var(--ink-72);max-width:var(--measure)}
main{display:block}

/* ---------- Skip link ---------- */
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--bg);padding:.6em 1.1em;z-index:300;font-family:var(--mono);font-size:.8rem}
.skip:focus{left:0}

/* ---------- Masthead (formal, logo left) ---------- */
.masthead{border-bottom:3px double var(--ink);background:var(--bg)}
.mast-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:22px 0}
.brand-lock{display:flex;align-items:center;gap:14px;flex-shrink:0}
.brand-lock svg{height:46px;width:46px;transition:transform .8s var(--ease-out)}
.brand-lock:hover svg{transform:rotate(180deg)}
.brand-lock .wm{font-family:var(--serif);font-weight:500;font-size:clamp(1.15rem,1.8vw,1.5rem);letter-spacing:.05em;white-space:nowrap}
.mast-links{display:flex;align-items:center;gap:clamp(16px,2.4vw,34px)}
.mast-links a.nav-link{
  font-family:var(--mono);font-size:.66rem;letter-spacing:.24em;text-transform:uppercase;color:var(--ink-55);
  position:relative;padding:4px 0;transition:color .2s ease;
}
.mast-links a.nav-link::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--ink);transition:width .3s var(--ease-out)}
.mast-links a.nav-link:hover{color:var(--ink)}
.mast-links a.nav-link:hover::after{width:100%}
.mast-links a.nav-link[aria-current="page"]{color:var(--ink)}
.mast-links a.nav-link[aria-current="page"]::after{width:100%}

/* slim bar appears after scrolling past masthead */
.slimbar{
  position:fixed;top:0;left:0;right:0;z-index:120;
  background:color-mix(in srgb,var(--bg) 92%,transparent);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--hairline);
  transform:translateY(-100%);
  transition:transform .4s var(--ease-out);
}
.slimbar.visible{transform:translateY(0)}
.slimbar .container{display:flex;align-items:center;justify-content:space-between;gap:20px;height:58px}
.slimbar .brand{display:flex;align-items:center;gap:10px}
.slimbar .brand svg{height:26px;width:auto}
.slimbar .brand .wm{font-family:var(--serif);font-size:1.12rem;letter-spacing:.06em;white-space:nowrap}
.slim-links{display:flex;align-items:center;gap:clamp(12px,2vw,28px);list-style:none}
.slim-links a{font-family:var(--mono);font-size:.62rem;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-55);transition:color .2s ease}
.slim-links a:hover,.slim-links a[aria-current="page"]{color:var(--ink)}

/* utility cluster (theme toggle + burger) — lives in masthead meta + slimbar */
.theme-toggle{width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--hairline);border-radius:50%;transition:border-color .2s ease,transform .45s var(--ease-out);vertical-align:middle}
.theme-toggle:hover{border-color:var(--ink);transform:rotate(180deg)}
.theme-toggle svg{width:12px;height:12px}
.mast-tools{display:flex;align-items:center;gap:12px}

.burger{display:none;width:32px;height:32px;position:relative}
.burger span{position:absolute;left:6px;right:6px;height:1.6px;background:var(--ink);transition:transform .35s var(--ease-out),opacity .2s ease}
.burger span:nth-child(1){top:11px}
.burger span:nth-child(2){top:20px}
body.menu-open .burger span:nth-child(1){transform:translateY(4.5px) rotate(45deg)}
body.menu-open .burger span:nth-child(2){transform:translateY(-4.5px) rotate(-45deg)}

.mobile-menu{
  position:fixed;inset:0;z-index:110;background:var(--bg);
  display:flex;flex-direction:column;justify-content:center;
  padding:80px var(--pad) 44px;
  opacity:0;visibility:hidden;transition:opacity .35s ease,visibility .35s ease;
}
body.menu-open .mobile-menu{opacity:1;visibility:visible}
.mobile-menu ul{list-style:none}
.mobile-menu a{
  display:flex;align-items:baseline;gap:.6em;
  font-family:var(--serif);font-size:clamp(2.1rem,8.6vw,3.2rem);
  padding:.22em 0;border-bottom:1px solid var(--hairline);
}
.mobile-menu a i{font-family:var(--mono);font-style:normal;font-size:.72rem;letter-spacing:.2em;color:var(--ink-38)}
.mobile-menu .mm-foot{margin-top:38px;font-family:var(--mono);font-size:.68rem;letter-spacing:.18em;color:var(--ink-55)}

/* ---------- Hero (home) ---------- */
.hero{padding:clamp(72px,12vh,140px) 0 clamp(56px,9vh,104px);text-align:center}
.hero .dict{font-family:var(--mono);font-size:.7rem;letter-spacing:.3em;text-transform:uppercase;color:var(--ink-55);line-height:2.1;max-width:60em;margin-inline:auto}
.hero h1{
  font-size:clamp(3.2rem,9.4vw,8.6rem);
  line-height:1.0;letter-spacing:.002em;
  margin:clamp(26px,4.4vh,48px) auto clamp(24px,4vh,40px);
  max-width:11em;
}
.hero .lede{margin-inline:auto;text-align:center}
.hero-cta{margin-top:clamp(30px,5vh,52px);display:flex;justify-content:center;align-items:center;gap:22px;flex-wrap:wrap}

.btn{
  display:inline-flex;align-items:center;gap:12px;
  font-family:var(--mono);font-size:.7rem;font-weight:500;letter-spacing:.24em;text-transform:uppercase;
  background:var(--ink);color:var(--bg);
  padding:1.25em 2.3em;
  transition:opacity .25s ease,transform .25s ease;
}
.btn:hover{opacity:.82;transform:translateY(-2px)}
.btn:active{transform:translateY(0) scale(.98)}
.link-serif{font-family:var(--serif);font-style:italic;font-size:1.22rem;border-bottom:1px solid var(--ink);padding-bottom:.06em;transition:opacity .2s ease}
.link-serif:hover{opacity:.6}

/* line-reveal: headline lines slide up from a mask (JS-gated so no-JS users see text) */
.lines .ln{display:block;overflow:hidden}
.lines .ln>span{display:block;transition:transform .9s var(--ease-out)}
:root.js .lines .ln>span{transform:translateY(110%)}
.lines.active .ln:nth-child(1)>span{transition-delay:.05s}
.lines.active .ln:nth-child(2)>span{transition-delay:.16s}
.lines.active .ln:nth-child(3)>span{transition-delay:.27s}
:root.js .lines.active .ln>span{transform:translateY(0)}

/* ---------- Sections ---------- */
.section{padding:clamp(56px,9vh,110px) 0}
.sec-head{display:flex;justify-content:space-between;align-items:baseline;gap:24px;padding-bottom:clamp(26px,4vh,40px)}
.sec-head .eyebrow{flex-shrink:0}
.sec-head .side-note{font-family:var(--serif);font-style:italic;font-size:clamp(1.1rem,1.8vw,1.35rem);color:var(--ink-55);text-align:right}

/* ---------- Index rows (No. 01–04) ---------- */
.index{border-top:1px solid var(--ink)}
.index-row{
  display:grid;grid-template-columns:110px minmax(220px,.62fr) 1fr 56px;
  gap:clamp(16px,2.6vw,40px);align-items:baseline;
  padding:clamp(24px,4vh,38px) 0;
  border-bottom:1px solid var(--hairline);
  position:relative;
  transition:padding-left .35s var(--ease-out);
}
.index-row:last-child{border-bottom:1px solid var(--ink)}
.index-row .no{font-family:var(--mono);font-size:.72rem;letter-spacing:.2em;color:var(--ink-38)}
.index-row h3,.index-row .t{font-family:var(--serif);font-size:clamp(1.9rem,3.4vw,2.75rem);line-height:1.05}
.index-row .d{font-size:.94rem;line-height:1.65;color:var(--ink-55);align-self:center;max-width:34em}
.index-row .arr{font-family:var(--serif);font-size:1.7rem;text-align:right;transition:transform .35s var(--ease-out);align-self:center}
.index-row:hover{padding-left:14px}
.index-row:hover .arr{transform:translateX(8px)}
.index-row::before{
  content:"";position:absolute;left:-14px;top:0;bottom:0;width:3px;background:var(--ink);
  transform:scaleY(0);transform-origin:top;transition:transform .35s var(--ease-out);
}
.index-row:hover::before{transform:scaleY(1)}

/* ---------- Detail rows (subpages) ---------- */
.detail{border-top:1px solid var(--ink)}
.detail-row{
  display:grid;grid-template-columns:110px minmax(240px,.66fr) 1fr;
  gap:clamp(16px,2.6vw,44px);
  padding:clamp(28px,4.6vh,44px) 0;
  border-bottom:1px solid var(--hairline);
}
.detail-row:last-child{border-bottom:1px solid var(--ink)}
.detail-row .no{font-family:var(--mono);font-size:.72rem;letter-spacing:.2em;color:var(--ink-38);padding-top:.6em}
.detail-row h3{font-size:clamp(1.7rem,2.9vw,2.4rem)}
.detail-row p{color:var(--ink-72);font-size:.98rem;max-width:36em}
.detail-row .tags{
  margin-top:14px;font-family:var(--mono);font-size:.66rem;font-weight:500;
  letter-spacing:.2em;text-transform:uppercase;color:var(--ink-55);line-height:2.2;
}
.detail-row .tags b{font-weight:400;color:var(--ink-38);padding:0 .55em}

/* ---------- Page hero (subpages) ---------- */
.page-hero{padding:clamp(56px,9vh,104px) 0 clamp(36px,6vh,64px)}
.page-hero .eyebrow{display:block;margin-bottom:20px}
.page-hero h1{font-size:clamp(2.8rem,6.4vw,5.6rem);max-width:14em}
.page-hero .lede{margin-top:26px}

/* ---------- Principles / editorial columns ---------- */
.columns{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--ink)}
.col{padding:clamp(26px,3.6vw,44px) clamp(20px,2.8vw,40px)}
.col+.col{border-left:1px solid var(--hairline)}
.col:first-child{padding-left:0}
.col:last-child{padding-right:0}
.col h3{font-size:clamp(1.5rem,2.3vw,1.95rem);margin-bottom:14px}
.col p{font-size:.94rem;line-height:1.7;color:var(--ink-55)}

/* drop cap for editorial prose */
.dropcap::first-letter{
  font-family:var(--serif);float:left;
  font-size:3.4em;line-height:.82;padding:.06em .12em 0 0;
}

/* ---------- Pull-quote band ---------- */
.pull{
  border-top:3px double var(--ink);border-bottom:3px double var(--ink);
  padding:clamp(46px,8vh,86px) 0;text-align:center;
}
.pull .q{font-family:var(--serif);font-style:italic;font-size:clamp(2.2rem,5.6vw,4.6rem);line-height:1.12;max-width:16em;margin-inline:auto}
.pull .attr{margin-top:20px;font-family:var(--mono);font-size:.66rem;letter-spacing:.3em;text-transform:uppercase;color:var(--ink-38)}

/* ---------- Formats (two ways in) ---------- */
.formats{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--ink)}
.format{padding:clamp(28px,4vw,48px) clamp(22px,3.4vw,52px)}
.format+.format{border-left:1px solid var(--hairline)}
.format:first-child{padding-left:0}
.format:last-child{padding-right:0}
.format .eyebrow{color:var(--ink-38)}
.format h3{font-size:clamp(1.7rem,2.7vw,2.2rem);margin:12px 0 12px}
.format p{color:var(--ink-55);font-size:.96rem;max-width:30em}

/* ---------- Split + fact box (about / solutions) ---------- */
.split{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(36px,6vw,96px);align-items:start}
.prose p{color:var(--ink-72);max-width:var(--measure)}
.prose p+p{margin-top:1.3em}
.factbox{border:1px solid var(--ink);padding:clamp(24px,3vw,40px);position:relative}
.factbox::before{content:"";position:absolute;inset:5px;border:1px solid var(--hairline);pointer-events:none}
.factbox .eyebrow{display:block;margin-bottom:20px}
.factbox dl div{display:flex;justify-content:space-between;gap:18px;padding:11px 0;border-bottom:1px solid var(--hairline)}
.factbox dl div:last-child{border-bottom:0}
.factbox dt{font-size:.9rem;color:var(--ink-55)}
.factbox dd{font-family:var(--mono);font-size:.76rem;letter-spacing:.06em;text-align:right}

/* ---------- Rune anatomy ---------- */
.anatomy{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}
.rune-cell{padding:clamp(26px,3.4vw,46px) 14px;display:flex;flex-direction:column;align-items:center;gap:20px;text-align:center}
.rune-cell+.rune-cell{border-left:1px solid var(--hairline)}
.rune-cell svg{height:88px;width:auto}
.rune-cell .cap{font-family:var(--mono);font-size:.62rem;letter-spacing:.24em;text-transform:uppercase;color:var(--ink-55);line-height:2}
.rune-cell.bound{background:var(--ink);color:var(--bg)}
.rune-cell.bound .cap{color:color-mix(in srgb,var(--bg) 62%,transparent)}

/* ---------- Products: in-development ---------- */
.dev{border-top:3px double var(--ink);border-bottom:3px double var(--ink);padding:clamp(52px,9vh,96px) 0;text-align:center}
.dev .pulse{width:8px;height:8px;background:var(--ink);border-radius:50%;margin:0 auto 30px;animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.3;transform:scale(.72)}}
.dev h2{font-family:var(--serif);font-size:clamp(2.2rem,4.8vw,3.8rem);max-width:17em;margin-inline:auto;line-height:1.1}
.dev p{color:var(--ink-55);max-width:36em;margin:22px auto 0}
.dev .btn{margin-top:38px}

/* ---------- Closing CTA ---------- */
.closing{
  border-top:3px double var(--ink);
  padding:clamp(56px,10vh,110px) 0 clamp(40px,7vh,72px);
  text-align:center;
}
.closing .q{font-family:var(--serif);font-style:italic;font-size:clamp(2rem,4.6vw,3.6rem);line-height:1.14;max-width:17em;margin:0 auto 30px}
.closing .mail{
  display:inline-block;font-family:var(--mono);font-size:clamp(.9rem,1.6vw,1.15rem);
  letter-spacing:.2em;border-bottom:2px solid var(--ink);padding-bottom:6px;
  transition:opacity .2s ease;
}
.closing .mail:hover{opacity:.6}
.closing .note{margin-top:18px;font-family:var(--mono);font-size:.62rem;letter-spacing:.26em;text-transform:uppercase;color:var(--ink-38)}

/* ---------- Contact ---------- */
.contact-hero{padding:clamp(64px,11vh,130px) 0 clamp(56px,9vh,100px);text-align:center}
.contact-hero h1{font-size:clamp(2.9rem,6.6vw,5.8rem);margin:22px auto 26px;max-width:12em}
.contact-hero .lede{margin-inline:auto}
.mail-hero{
  display:inline-block;margin-top:clamp(34px,5.5vh,54px);
  font-family:var(--serif);font-size:clamp(1.7rem,5vw,4rem);
  border-bottom:3px solid var(--ink);padding-bottom:.1em;
  transition:opacity .2s ease;word-break:break-all;
}
.mail-hero:hover{opacity:.6}
.contact-meta{
  margin-top:clamp(44px,7vh,76px);
  display:grid;grid-template-columns:repeat(3,1fr);gap:0;
  border-top:1px solid var(--ink);text-align:left;
}
.contact-meta>div{padding:26px clamp(18px,2.6vw,36px) 4px}
.contact-meta>div+div{border-left:1px solid var(--hairline)}
.contact-meta>div:first-child{padding-left:0}
.contact-meta h3{font-family:var(--mono);font-weight:500;font-size:.64rem;letter-spacing:.28em;text-transform:uppercase;color:var(--ink-38);margin-bottom:12px}
.contact-meta p{color:var(--ink-72);font-size:.95rem}

/* ---------- 404 ---------- */
.notfound{padding:clamp(90px,18vh,200px) 0;text-align:center}
.notfound .code{font-family:var(--mono);font-size:.7rem;letter-spacing:.34em;color:var(--ink-38)}
.notfound h1{font-size:clamp(2.8rem,6.6vw,5.4rem);margin:26px auto}
.notfound p{color:var(--ink-55);max-width:30em;margin:0 auto 36px}

/* ---------- Footer ---------- */
footer{border-top:1px solid var(--ink);margin-top:clamp(30px,5vh,60px)}
.foot-inner{
  display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:clamp(30px,5vw,80px);
  padding:clamp(40px,7vh,64px) 0 clamp(30px,5vh,48px);
}
.foot-brand svg{height:40px;width:auto;margin-bottom:16px}
.foot-brand p{color:var(--ink-55);font-size:.92rem;max-width:24em;line-height:1.7}
.foot-col h3{font-family:var(--mono);font-weight:500;font-size:.64rem;letter-spacing:.28em;text-transform:uppercase;color:var(--ink-38);margin-bottom:16px}
.foot-col ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.foot-col a,.foot-col span{color:var(--ink-55);font-size:.93rem;transition:color .2s ease}
.foot-col a:hover{color:var(--ink)}
.foot-legal{
  border-top:3px double var(--ink);
  padding:18px 0 26px;
  display:flex;justify-content:space-between;align-items:baseline;gap:14px;flex-wrap:wrap;
  font-family:var(--mono);font-size:.64rem;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-38);
}

/* ---------- Reveal system (JS-gated) ---------- */
[data-reveal],[data-stagger]>*{transition:opacity .8s ease,transform .8s var(--ease-out)}
:root.js [data-reveal]{opacity:0}
:root.js [data-reveal="up"]{transform:translateY(36px)}
:root.js [data-reveal].active{opacity:1;transform:translateY(0)}
:root.js [data-stagger]>*{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s var(--ease-out)}
:root.js [data-stagger].active>*{opacity:1;transform:translateY(0)}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
  [data-reveal],[data-stagger]>*,.lines .ln>span{opacity:1 !important;transform:none !important}
}

/* ---------- Responsive ---------- */
@media (max-width:1000px){
  .split{grid-template-columns:1fr}
  .index-row{grid-template-columns:80px 1fr 40px;grid-template-rows:auto auto}
  .index-row .d{grid-column:2/3}
  .anatomy{grid-template-columns:1fr 1fr}
  .rune-cell:nth-child(3){border-left:0}
  .rune-cell:nth-child(n+3){border-top:1px solid var(--hairline)}
}
@media (max-width:840px){
  .mast-links .nav-link{display:none}
  .burger{display:block}
  
  .slim-links .nav-link{display:none}
  .detail-row{grid-template-columns:1fr;gap:8px}
  .detail-row .no{padding-top:0}
  .columns{grid-template-columns:1fr}
  .col{padding-left:0;padding-right:0}
  .col+.col{border-left:0;border-top:1px solid var(--hairline)}
  .formats{grid-template-columns:1fr}
  .format{padding-left:0;padding-right:0}
  .format+.format{border-left:0;border-top:1px solid var(--hairline)}
  .contact-meta{grid-template-columns:1fr}
  .contact-meta>div{padding-left:0;border-left:0 !important}
  .foot-inner{grid-template-columns:1fr;gap:34px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:8px}
  .sec-head .side-note{text-align:left}
}
@media (max-width:560px){
  .anatomy{grid-template-columns:1fr}
  .rune-cell+.rune-cell{border-left:0;border-top:1px solid var(--hairline)}
  .index-row:hover{padding-left:0}
}

/* ---------- Contact form ---------- */
.form{border-top:1px solid var(--ink);padding-top:clamp(28px,4vh,44px);margin-bottom:clamp(30px,5vh,50px)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:clamp(20px,3vw,44px)}
.field{margin-bottom:clamp(24px,3.6vh,36px)}
.field label{display:block;font-family:var(--mono);font-size:.64rem;font-weight:500;letter-spacing:.28em;text-transform:uppercase;color:var(--ink-55);margin-bottom:10px}
.field .opt{color:var(--ink-38);letter-spacing:.2em;text-transform:none}
.field input,.field select,.field textarea{
  width:100%;background:transparent;border:0;border-bottom:1px solid var(--rule);
  font-family:var(--sans);font-size:1.05rem;color:var(--ink);padding:8px 0 12px;
  border-radius:0;transition:border-color .2s ease;
}
.field textarea{resize:vertical;line-height:1.6;min-height:120px}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-bottom:2px solid var(--ink);padding-bottom:11px}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-38)}
.field input:-webkit-autofill,.field input:-webkit-autofill:focus{-webkit-box-shadow:0 0 0 1000px var(--bg) inset;-webkit-text-fill-color:var(--ink);transition:background-color 9999s}
.field:has(select){position:relative}
.field:has(select)::after{content:"↓";position:absolute;right:2px;bottom:14px;font-family:var(--serif);font-size:1.1rem;color:var(--ink-55);pointer-events:none}
.field select{appearance:none;-webkit-appearance:none;cursor:pointer;padding-right:32px}
.field select option{background:var(--bg);color:var(--ink)}
.hp-field{position:absolute;left:-9999px;top:-9999px;height:0;width:0;overflow:hidden}
.form-foot{display:flex;align-items:center;gap:26px;flex-wrap:wrap;padding-top:6px}
.form-alt{font-family:var(--serif);font-style:italic;font-size:1.08rem;color:var(--ink-55)}
.form-alt a{border-bottom:1px solid var(--ink);color:var(--ink);transition:opacity .2s ease}
.form-alt a:hover{opacity:.6}
.form-error{margin-top:20px;font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;border-left:2px solid var(--ink);padding-left:14px;line-height:1.9}
.form-success{border-top:3px double var(--ink);border-bottom:3px double var(--ink);text-align:center;padding:clamp(44px,8vh,80px) 0;margin-bottom:clamp(30px,5vh,50px)}
.form-success .q{font-family:var(--serif);font-size:clamp(2rem,4.4vw,3.2rem);line-height:1.1}
.form-success .s{margin-top:16px;color:var(--ink-55)}
@media (max-width:700px){
  .field-row{grid-template-columns:1fr;gap:0}
}

/* ============ v4 additions ============ */

/* hero: left-aligned formal */
.hero{text-align:left;padding:clamp(60px,10vh,120px) 0 clamp(48px,8vh,88px)}
.hero .lede{margin-inline:0;text-align:left}
.hero-cta{justify-content:flex-start}
.hero h1{margin-left:0;margin-right:0;max-width:9.5em;font-size:clamp(3rem,8.2vw,7.2rem)}

/* ghost button + shine sweep */
.btn{position:relative;overflow:hidden}
.btn::after{content:"";position:absolute;top:-60%;bottom:-60%;left:-30%;width:36%;background:linear-gradient(105deg,transparent 20%,rgba(255,255,255,.22) 50%,transparent 80%);transform:translateX(-160%) rotate(8deg);transition:transform .7s var(--ease-out)}
.btn:hover::after{transform:translateX(420%) rotate(8deg)}
.btn-ghost{display:inline-flex;align-items:center;gap:12px;font-family:var(--mono);font-size:.7rem;font-weight:500;letter-spacing:.24em;text-transform:uppercase;color:var(--ink);background:transparent;border:1px solid var(--ink);padding:calc(1.25em - 1px) 2.3em;transition:background-color .25s ease,color .25s ease,transform .25s ease}
.btn-ghost:hover{background:var(--ink);color:var(--bg);transform:translateY(-2px)}

/* ---------- Flywheel centerpiece ---------- */
.flywheel{padding:clamp(56px,9vh,110px) 0;overflow-x:clip}
.fw-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(36px,6vw,90px);align-items:center}
.fw-copy h2{font-size:clamp(2.1rem,3.8vw,3.2rem);margin:14px 0 20px}
.fw-copy p{color:var(--ink-72);max-width:34em}
.fw-copy p+p{margin-top:1.1em}
.fw-steps{margin-top:26px;font-family:var(--mono);font-size:.68rem;letter-spacing:.22em;color:var(--ink-55);line-height:2.3;text-transform:uppercase}
.fw-steps b{font-weight:400;color:var(--ink-38);padding:0 .5em}
.fw-visual{position:relative;aspect-ratio:1;max-width:min(600px,86vw);margin-inline:auto;width:100%;min-width:0}
.fw-visual svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.fw-center{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;pointer-events:none}
.fw-center svg{position:static;width:19%;height:19%}
.fw-node{position:absolute;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;gap:4px;text-align:center;width:118px}
.fw-node .dot{width:7px;height:7px;border-radius:50%;background:var(--ink)}
.fw-node .lb{font-family:var(--mono);font-size:.66rem;font-weight:500;letter-spacing:.26em;text-transform:uppercase}
.fw-node .sb{font-size:.78rem;color:var(--ink-55);line-height:1.45}
.fw-node{transition:transform .4s var(--ease-out)}
.fw-node:hover{transform:translate(-50%,-50%) scale(1.06)}

/* ---------- Two doors (audience) ---------- */
.doors{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}
.door{padding:clamp(30px,4.4vw,54px) clamp(22px,3vw,48px);display:flex;flex-direction:column;gap:14px;position:relative;overflow:hidden;transition:background-color .3s ease,color .3s ease}
.door+.door{border-left:1px solid var(--hairline)}
.door .eyebrow{transition:color .3s ease}
.door h3{font-size:clamp(1.7rem,2.9vw,2.5rem)}
.door p{color:var(--ink-55);max-width:26em;transition:color .3s ease}
.door .go{margin-top:auto;padding-top:16px;font-family:var(--mono);font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;display:flex;align-items:center;gap:10px}
.door .go .arr{transition:transform .35s var(--ease-out)}
.door:hover{background:var(--ink);color:var(--bg)}
.door:hover .eyebrow,.door:hover p{color:color-mix(in srgb,var(--bg) 62%,transparent)}
.door:hover .go .arr{transform:translateX(7px)}

/* ---------- Insights ---------- */
.notes-empty{border-top:3px double var(--ink);border-bottom:3px double var(--ink);padding:clamp(48px,9vh,90px) 0;text-align:center}
.notes-empty .q{font-family:var(--serif);font-size:clamp(2rem,4.4vw,3.4rem);line-height:1.12;max-width:18em;margin-inline:auto}
.notes-empty p{color:var(--ink-55);max-width:36em;margin:20px auto 0}
.notes-empty .btn-ghost{margin-top:32px}

/* parallax drift utility */
[data-drift]{will-change:transform}

@media (max-width:1000px){
  .fw-grid{grid-template-columns:1fr;gap:40px}
  .fw-visual{max-width:480px}
}
@media (max-width:700px){
  .doors{grid-template-columns:1fr}
  .door+.door{border-left:0;border-top:1px solid var(--hairline)}
  .fw-node{width:104px}
  .fw-node .sb{display:none}
}

/* ---------- v4.2 additions ---------- */
.corridor{margin-top:18px;font-size:.95rem;letter-spacing:.02em;color:var(--ink-55);max-width:var(--measure)}
.formats.three{grid-template-columns:1fr 1fr 1fr}
.formats.three .format{padding-left:clamp(18px,2.4vw,36px);padding-right:clamp(18px,2.4vw,36px)}
.formats.three .format:first-child{padding-left:0}
.formats.three .format:last-child{padding-right:0}
@media (max-width:840px){
  .formats.three{grid-template-columns:1fr}
  .formats.three .format{padding-left:0;padding-right:0}
}
.retainer-line{margin-top:26px;font-family:var(--serif);font-style:italic;font-size:1.18rem;color:var(--ink-55);max-width:44em}