:root{
  --cover:url("/assets/img/cover.png");
  --openbook:url("/assets/img/inside-openbook.jpg");
  --cells:url("/assets/img/evidence-cells.jpg");
  --nature:url("/assets/img/promise-forest.jpg");
  --headshot:url("/assets/img/author-doreen.jpg");
  --ink:#0B0F0E; --ink2:#0E1512; --teal-band:#07201B;
  --paper:#F6F4EF; --sand:#ECE7DC; --surface:#FFFFFF;
  --on-dark:#EAF0EC; --on-dark-mut:#A7B8B1;
  --text:#16201D; --muted:#586460; --faint:#8B948F;
  --teal:#2E7D6B; --teal-deep:#1F5B4E; --teal-lum:#5FC9AE; --cobalt:#2C6E8F; --ember:#C56A4A;
  --rule:#E1DDD2; --rule-d:#26302C;
  --shadow:0 2px 6px rgba(16,26,23,.06),0 18px 44px rgba(16,26,23,.10);
  --shadow-lg:0 30px 80px rgba(6,20,16,.30);
  --sans:"Helvetica Neue",Arial,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--text);font-family:var(--serif);line-height:1.65;
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
.wrap{max-width:1180px;margin:0 auto;padding:0 26px}
h1,h2,h3,.eyebrow,.btn,nav,.stat b,.pill,.card h3,label{font-family:var(--sans)}
h1,h2,h3{margin:0;letter-spacing:-.02em;text-wrap:balance;color:inherit;line-height:1.08}
h1{line-height:.95}
h3{line-height:1.22}
p{margin:0}
.eyebrow{font:700 12px/1 var(--mono);letter-spacing:.22em;text-transform:uppercase}
.eyebrow.teal{color:var(--teal-deep)}
.hero .eyebrow.teal,.otherhalf .eyebrow.teal,.on-dark .eyebrow.teal,.final .eyebrow.teal{color:var(--teal-lum)}
.reveal{opacity:0;transform:translateY(16px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

.btn{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;line-height:1;
  padding:15px 26px;border-radius:11px;border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:transform .15s ease,background .15s ease,border-color .15s,box-shadow .15s}
.btn.primary{background:var(--teal);color:#fff;box-shadow:0 8px 22px rgba(46,125,107,.32)}
.btn.primary:hover{background:var(--teal-deep);transform:translateY(-2px);box-shadow:0 12px 28px rgba(46,125,107,.4)}
.btn.ghost{background:transparent;color:var(--text);border-color:var(--rule)}
.btn.ghost:hover{border-color:var(--teal);color:var(--teal-deep)}
.hero .btn.ghost,.otherhalf .btn.ghost,.on-dark .btn.ghost,.final .btn.ghost{color:var(--on-dark);border-color:rgba(255,255,255,.32)}
.hero .btn.ghost:hover,.on-dark .btn.ghost:hover,.final .btn.ghost:hover{border-color:var(--teal-lum);color:#fff}
.btn:focus-visible{outline:2px solid var(--teal-lum);outline-offset:3px}
a:focus-visible{outline:2px solid var(--teal-lum);outline-offset:3px;border-radius:4px}

header{position:fixed;top:0;left:0;right:0;z-index:40;background:transparent;border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,backdrop-filter .3s ease}
header.scrolled{background:rgba(11,15,14,.74);backdrop-filter:blur(12px);border-bottom-color:rgba(255,255,255,.08)}
.hd{display:flex;align-items:center;gap:20px;height:68px}
.logo{display:flex;flex-direction:column;line-height:1.05;margin-right:auto;color:var(--on-dark);text-decoration:none}
.logo b{font-family:var(--sans);font-size:16px;font-weight:800;letter-spacing:.01em}
.logo span{font:600 9.5px/1 var(--mono);letter-spacing:.2em;text-transform:uppercase;color:#C6D3CD;margin-top:3px}
nav.main{display:flex;gap:26px}
nav.main a{color:#C6D3CD;text-decoration:none;font-size:13.5px;font-weight:600;transition:color .15s}
nav.main a:hover{color:#fff}
.hd .btn{padding:11px 18px}
.hd .btn.ghost{color:var(--on-dark);border-color:rgba(255,255,255,.28)}
@media(max-width:860px){nav.main{display:none}.hd .ghost{display:none}}

section{position:relative}
.pad{padding:clamp(72px,10vw,132px) 0}
.dark{background:var(--ink);color:var(--on-dark)}
.dark h1,.dark h2,.dark h3{color:#fff}
.lead{font-size:clamp(17px,2vw,20px);line-height:1.62;color:var(--muted);max-width:60ch}
.on-dark .lead,.hero .lead,.otherhalf .lead,.final .lead{color:var(--on-dark-mut)}
.center{text-align:center;margin-inline:auto}

/* HERO */
.hero{background:radial-gradient(120% 90% at 78% 12%,#12211d 0%,var(--ink) 55%);color:var(--on-dark);overflow:hidden}
.hero canvas{position:absolute;inset:0;width:100%;height:100%;z-index:0}
.hero::after{content:"";position:absolute;inset:0;z-index:1;
  background:radial-gradient(92% 74% at 30% 42%,rgba(11,15,14,.28),rgba(11,15,14,.8) 78%)}
.hero .wrap{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding:clamp(94px,9vw,120px) 0 clamp(56px,8vw,104px)}
.hero h1{font-size:clamp(46px,8.5vw,104px);font-weight:800;line-height:.94;letter-spacing:-.035em}
.hero .sub{font-family:var(--serif);font-style:italic;font-size:clamp(19px,2.6vw,29px);color:#dfeae5;margin-top:18px;line-height:1.25}
.hero .lead{margin-top:22px;font-size:18px}
.hero .cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero .trust{margin-top:26px;font:600 12.5px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--on-dark-mut)}
.hero .trust b{color:var(--teal-lum);font-weight:700}
.cover-fig{position:relative;aspect-ratio:1024/1536;width:100%;max-width:390px;margin-inline:auto}
.cover-fig::before{content:"";position:absolute;inset:-8% -4%;
  background:radial-gradient(50% 50% at 62% 45%,rgba(95,201,174,.30),transparent 70%);filter:blur(16px)}
.cover-img{position:absolute;inset:0;background-image:var(--cover);background-size:contain;
  background-position:center;background-repeat:no-repeat;filter:drop-shadow(0 40px 60px rgba(0,0,0,.6));
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 7%,#000 93%,transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 7%,#000 93%,transparent 100%)}
@media(max-width:820px){.hero-grid{grid-template-columns:1fr;gap:30px}.cover-fig{max-width:360px;margin:0 auto;order:-1}}

/* PROMISE with soft photographic background */
.promise{text-align:center;background:var(--paper);overflow:hidden}
.promise::before{content:"";position:absolute;inset:0;z-index:0;background:var(--nature) center/cover;opacity:.16}
.promise::after{content:"";position:absolute;inset:0;z-index:0;
  background:radial-gradient(74% 68% at 50% 34%,rgba(246,244,239,.62),var(--paper) 82%)}
.promise .wrap{position:relative;z-index:1}
.promise h2{font-size:clamp(30px,4.6vw,50px);font-weight:800;max-width:22ch;margin-inline:auto}
.promise .lead{margin:22px auto 0;text-align:center;font-size:19px}
.pills{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:34px}
.pill{display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--rule);
  border-radius:14px;padding:15px 22px;font-size:15px;font-weight:600;box-shadow:var(--shadow);color:var(--text)}
.pill .tick{width:20px;height:20px;flex:none;color:var(--teal)}

/* OTHER HALF */
.otherhalf{background:linear-gradient(100deg,var(--teal-band),#0a1613);color:var(--on-dark);overflow:hidden}
.otherhalf canvas{position:absolute;inset:0;left:auto;width:64%;height:100%;z-index:0;opacity:.95;
  mask-image:linear-gradient(90deg,transparent,#000 52%)}
.otherhalf .wrap{position:relative;z-index:2}
.otherhalf .in-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
.otherhalf h2{font-size:clamp(26px,3.6vw,40px);font-weight:800;max-width:20ch;line-height:1.1}
.otherhalf .lead{margin-top:20px}
@media(max-width:820px){.otherhalf .in-grid{grid-template-columns:1fr}.otherhalf canvas{opacity:.5;width:100%}}

/* BIG IDEA */
.bigidea{background:var(--sand)}
.bigidea .head{text-align:center;margin-bottom:46px}
.bigidea h2{font-size:clamp(30px,4.6vw,52px);font-weight:800}
.bigidea h2 .amp{color:var(--teal);font-style:italic;font-family:var(--serif);font-weight:400}
.ideas{display:grid;grid-template-columns:1fr 1fr;gap:26px;position:relative}
.idea{background:var(--ink);border-radius:18px;overflow:hidden;box-shadow:var(--shadow-lg);color:var(--on-dark)}
.idea .viz{width:100%;aspect-ratio:16/9;display:block;background:#0a0e0d}
.idea .txt{padding:24px 26px 28px}
.idea .lbl{font:700 11px/1 var(--mono);letter-spacing:.2em;text-transform:uppercase}
.idea.tumor .lbl{color:#E08A62}
.idea.terrain .lbl{color:var(--teal-lum)}
.idea h3{font-size:23px;font-weight:800;margin:10px 0 10px}
.idea p{color:var(--on-dark-mut);font-size:15.5px;line-height:1.6}
.andbadge{position:absolute;top:22%;left:50%;transform:translate(-50%,-50%);z-index:5;
  width:62px;height:62px;border-radius:50%;background:var(--paper);color:var(--teal-deep);
  display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-style:italic;
  font-size:22px;box-shadow:0 8px 22px rgba(0,0,0,.22);border:1px solid var(--rule)}
.bigidea .foot{text-align:center;color:var(--muted);font-style:italic;font-size:15px;margin-top:34px;max-width:60ch;margin-inline:auto}
@media(max-width:760px){.ideas{grid-template-columns:1fr}.andbadge{display:none}}

/* AUTHOR */
.author{background:var(--paper)}
.author .g{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:center}
.portrait{aspect-ratio:4/5;border-radius:16px;background:var(--headshot) center/cover;
  box-shadow:var(--shadow-lg);position:relative;overflow:hidden}
.portrait .ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:.5}
.portrait .ph svg{width:44%;height:44%;color:#5f7a72}
.portrait .tagph{position:relative;z-index:2;font:700 10px/1 var(--mono);letter-spacing:.16em;
  text-transform:uppercase;color:#cfe0d9;background:rgba(0,0,0,.4);padding:7px 12px;border-radius:8px}
.author h2{font-size:clamp(27px,3.6vw,40px);font-weight:800;margin:14px 0 16px;max-width:26ch}
.author .lead{color:var(--muted)}
.creds{list-style:none;padding:0;margin:22px 0 26px;display:flex;flex-direction:column;gap:11px}
.creds li{position:relative;padding-left:26px;font-family:var(--sans);font-size:14.5px;color:var(--text)}
.creds li::before{content:"";position:absolute;left:3px;top:7px;width:9px;height:9px;background:var(--teal);transform:rotate(45deg);border-radius:2px}
@media(max-width:820px){.author .g{grid-template-columns:1fr;gap:28px}.portrait{max-width:300px}}

/* DISCOVER */
.discover{background:var(--surface)}
.discover .head{text-align:center;margin-bottom:48px}
.discover h2{font-size:clamp(29px,4.4vw,48px);font-weight:800}
.grid6{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--paper);border:1px solid var(--rule);border-radius:15px;padding:26px 24px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d3cec1}
.card .ic{width:42px;height:42px;border-radius:11px;background:rgba(46,125,107,.1);color:var(--teal-deep);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.card .ic svg{width:22px;height:22px}
.card h3{font-size:17.5px;font-weight:800;margin-bottom:8px;letter-spacing:-.01em}
.card p{font-size:14.5px;color:var(--muted);line-height:1.58}
@media(max-width:820px){.grid6{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.grid6{grid-template-columns:1fr}}

/* INSIDE */
.inside{background:var(--sand)}
.inside .g{display:grid;grid-template-columns:1.25fr .75fr;gap:46px;align-items:start}
.inside h2{font-size:clamp(27px,3.8vw,42px);font-weight:800;margin-bottom:26px;max-width:24ch}
.roadmap{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:20px}
.roadmap li{display:grid;grid-template-columns:auto 1fr;gap:16px}
.roadmap .p{font:800 12px/1.6 var(--mono);letter-spacing:.08em;color:var(--teal-deep);white-space:nowrap;border-right:2px solid var(--rule);padding-right:16px}
.roadmap .d h3{font-size:16px;font-weight:800;margin-bottom:4px}
.roadmap .d p{font-size:14px;color:var(--muted);line-height:1.55}
.refchip{display:inline-flex;align-items:center;gap:9px;margin-top:26px;background:rgba(46,125,107,.1);
  color:var(--teal-deep);font-family:var(--sans);font-weight:700;font-size:13px;padding:11px 16px;border-radius:11px}
.spread{aspect-ratio:3/4;border-radius:14px;background:var(--openbook) center/cover;box-shadow:var(--shadow-lg);position:relative;overflow:hidden}
.spread::after{content:"";position:absolute;inset:0;border-radius:14px;box-shadow:inset 0 0 70px rgba(0,0,0,.4);
  background:linear-gradient(180deg,transparent 60%,rgba(20,16,10,.28))}
@media(max-width:820px){.inside .g{grid-template-columns:1fr;gap:30px}.spread{max-width:300px}}

/* EVIDENCE with cellular background */
.evidence{background:var(--ink);color:var(--on-dark);overflow:hidden}
.evidence::before{content:"";position:absolute;inset:0;background:var(--cells) center/cover;opacity:.55}
.evidence::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,16,13,.7),rgba(7,16,13,.88))}
.evidence .wrap{position:relative;z-index:2}
.evidence .head{text-align:center;margin-bottom:44px}
.evidence h2{font-size:clamp(27px,4vw,44px);font-weight:800;color:#fff}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.stat{background:rgba(6,14,12,.55);backdrop-filter:blur(3px);border:1px solid var(--rule-d);border-radius:16px;padding:30px 26px}
.stat b{display:block;font-size:clamp(38px,5vw,56px);font-weight:800;letter-spacing:-.03em;color:var(--teal-lum);
  font-variant-numeric:tabular-nums;line-height:1}
.stat span{display:block;margin-top:14px;font-family:var(--serif);font-size:15px;line-height:1.55;color:var(--on-dark-mut)}
.evidence .cap{text-align:center;margin-top:30px;font-style:italic;color:var(--on-dark-mut);font-size:14px}
@media(max-width:760px){.stats{grid-template-columns:1fr}}

/* FREE CHAPTER */
.free{background:var(--paper)}
.free .box{background:var(--surface);border:1px solid var(--rule);border-radius:22px;box-shadow:var(--shadow);
  padding:clamp(34px,5vw,60px);display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center;
  background-image:radial-gradient(70% 120% at 100% 0%,rgba(46,125,107,.08),transparent 60%)}
.free h2{font-size:clamp(26px,3.6vw,40px);font-weight:800;margin-bottom:16px;max-width:14ch}
.free .lead{color:var(--muted);font-size:16.5px}
.form{display:flex;flex-direction:column;gap:12px}
.form input{border:1px solid var(--rule);border-radius:11px;padding:15px 16px;font-family:var(--serif);font-size:15px;background:var(--paper);color:var(--text)}
.form input:focus{outline:2px solid var(--teal-lum);outline-offset:1px;border-color:var(--teal)}
.form .fine{font-size:12.5px;color:var(--muted);font-style:italic}
@media(max-width:760px){.free .box{grid-template-columns:1fr;gap:26px}}

/* WHY */
.why{background:radial-gradient(90% 100% at 20% 20%,#13211d,var(--ink));color:var(--on-dark);overflow:hidden}
.why canvas{position:absolute;inset:0;width:100%;height:100%;z-index:0;opacity:.7}
.why::after{content:"";position:absolute;inset:0;background:radial-gradient(78% 78% at 50% 50%,transparent,rgba(11,15,14,.72))}
.why .wrap{position:relative;z-index:2;text-align:center}
.why h2{font-size:clamp(27px,4vw,44px);font-weight:800;color:#fff}
.why .lead{margin:22px auto 0;color:var(--on-dark-mut);text-align:center}
.why blockquote{margin:34px auto 0;max-width:26ch;font-family:var(--serif);font-style:italic;font-size:clamp(24px,3.4vw,34px);line-height:1.3;color:#fff}
.why blockquote::before{content:"";display:block;width:44px;height:3px;background:var(--teal-lum);margin:0 auto 22px}
.why .btn{margin-top:32px}

/* WHO + GIFT */
.who{background:var(--surface)}
.who .head{text-align:center;margin-bottom:44px}
.who h2{font-size:clamp(28px,4.2vw,46px);font-weight:800}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.who .card h3{font-size:17px}
.gift{margin-top:26px;background:linear-gradient(120deg,rgba(46,125,107,.12),rgba(44,110,143,.1));
  border:1px solid rgba(46,125,107,.28);border-radius:18px;padding:clamp(26px,4vw,40px);display:flex;gap:28px;align-items:center;flex-wrap:wrap}
.gift .gt{flex:1;min-width:260px}
.gift h3{font-size:22px;font-weight:800;margin-bottom:10px}
.gift p{color:var(--muted);font-size:15.5px;max-width:52ch}
@media(max-width:820px){.grid3{grid-template-columns:1fr}}

/* FINAL */
.final{background:radial-gradient(100% 120% at 50% 0%,#12211d,var(--ink));color:var(--on-dark);overflow:hidden;text-align:center}
.final canvas{position:absolute;inset:0;width:100%;height:100%;z-index:0;opacity:.62}
.final .wrap{position:relative;z-index:2}
.final .mini{width:90px;aspect-ratio:1024/1536;margin:0 auto 26px;background-image:var(--cover);
  background-size:contain;background-repeat:no-repeat;background-position:center;filter:drop-shadow(0 18px 26px rgba(0,0,0,.6))}
.final h2{font-size:clamp(28px,4.4vw,50px);font-weight:800;color:#fff;max-width:18ch;margin:0 auto}
.final .cta-row{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;margin-top:32px}
.final .fmt{margin-top:22px;font:600 12.5px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--on-dark-mut)}

footer{background:#070B0A;color:var(--on-dark-mut);padding:60px 0 40px}
.fcols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:30px}
.fcols b{font-family:var(--sans);color:#fff;font-size:15px}
.fcols a{color:var(--on-dark-mut);text-decoration:none;display:block;margin-top:9px;font-size:14px}
.fcols a:hover{color:#fff}
.fcols .c{margin-top:9px;font-size:14px;line-height:1.6}
.disc{margin-top:42px;padding-top:24px;border-top:1px solid var(--rule-d);font-size:12.5px;line-height:1.6;color:#7d8c86;max-width:80ch}
.credit{margin-top:14px;font-size:11px;color:#7d8c86}
@media(max-width:760px){.fcols{grid-template-columns:1fr 1fr;gap:26px}}

/* subpages: header always solid (no dark hero behind it) */
body.subpage header{background:rgba(11,15,14,.86);backdrop-filter:blur(12px);border-bottom-color:rgba(255,255,255,.08)}
/* generic content section */
.section{position:relative}
.narrow{max-width:820px}
.vocab{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.vocab span{font:600 13px var(--sans);background:var(--accent-soft);color:var(--teal-deep);padding:9px 15px;border-radius:999px}
.qt{margin:6px 0 0;font-family:var(--serif);font-style:italic;font-size:clamp(20px,2.6vw,26px);line-height:1.35;border-left:3px solid var(--teal);padding:4px 0 4px 18px;color:var(--text)}
/* legal */
.legal{background:var(--paper)}
.legal .wrap{max-width:760px}
.legal h1{font-size:clamp(30px,4.4vw,48px);font-weight:800;line-height:1.02;margin-bottom:10px}
.legal .updated{font:600 12px var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--faint);margin-bottom:34px}
.legal h2{font-size:20px;font-weight:800;margin:34px 0 10px}
.legal p,.legal li{font-size:16px;line-height:1.7;color:var(--muted)}
.legal p{margin-bottom:14px;max-width:70ch}
.legal ul{margin:0 0 14px;padding-left:22px;display:flex;flex-direction:column;gap:8px}
.legal a{color:var(--teal-deep);text-decoration:underline}
.legal .back{display:inline-block;margin-top:34px;font-family:var(--sans);font-weight:700;font-size:14px;color:var(--teal-deep);text-decoration:none}