/* ══════════════════════════════════════════════════════════════════════════
   TechFinLens — public site
   Design rules for this sheet:
     · one flat brand colour, no gradients anywhere
     · hairline rules and generous space instead of card shadows
     · varied section rhythm — no page is three-equal-cards all the way down
     · real product screenshots, never illustrated fakes
   The in-app UI keeps its own look; this is deliberately quieter and more
   editorial than a dashboard.
   ══════════════════════════════════════════════════════════════════════════ */
:root{
  --bg:#FFFFFF;
  --alt:#F6F7F9;
  --alt2:#EFF1F5;
  --ink:#111827;
  --ink-2:#37414F;
  --slate:#5B6676;
  --muted:#8A94A3;
  --line:#E3E6EB;
  --line-2:#CED4DC;
  --brand:#0A4E9B;
  --brand-deep:#083C78;
  --brand-wash:#F1F5FA;
  --accent:#0A4E9B;
  --purple:#5B2BC4;
  --green:#0F7A52;
  --amber:#A96A08;
  --red:#B42318;
  --ink-dark:#0B1B2B;
  --font:'DM Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --serif:'Fraunces','Playfair Display',Georgia,serif;
  --mono:'JetBrains Mono',ui-monospace,monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--ink);line-height:1.62;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden;
  font-size:16px}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.wrap,.sec-in{max-width:1120px;margin:0 auto;padding:0 24px}
.glow{display:none}                      /* ambient blobs removed */

/* ── brand lockup ── */
.mark{width:32px;height:32px;flex-shrink:0;display:flex;align-items:center;justify-content:center}
.mark img,.mark svg{width:100%;height:100%}
.mark.lg{width:52px;height:52px}
.word{font-weight:600;font-size:1.06rem;letter-spacing:-.2px;color:var(--ink)}
.word em{font-style:normal;font-weight:400;color:var(--slate)}

/* ── nav ── */
.nav{position:sticky;top:0;z-index:100;display:flex;align-items:center;gap:40px;
  padding:0 24px;height:64px;max-width:1120px;margin:0 auto;background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.nav::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--line)}
.nav-brand{display:flex;align-items:center;gap:9px}
.nav-links{display:flex;gap:26px;margin-right:auto}
.nav-links a{font-size:.875rem;color:var(--slate);font-weight:500;padding:4px 0;border-bottom:1.5px solid transparent;transition:color .15s,border-color .15s}
.nav-links a:hover{color:var(--ink);border-bottom-color:var(--brand)}
.nav-actions{display:flex;align-items:center;gap:8px}
.btn{font-family:var(--font);font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:8px;
  border:none;white-space:nowrap;transition:background .15s,border-color .15s,color .15s}
.btn-login{padding:8px 14px;border-radius:6px;background:transparent;font-size:.875rem;color:var(--ink-2)}
.btn-login:hover{background:var(--alt)}
.btn-cta{padding:8px 16px;border-radius:6px;font-size:.875rem;color:#fff;background:var(--brand)}
.btn-cta:hover{background:var(--brand-deep)}
.btn-lg{padding:13px 22px;border-radius:7px;font-size:.94rem}
.btn-primary{color:#fff;background:var(--brand)}
.btn-primary:hover{background:var(--brand-deep)}
.btn-ghost{background:#fff;border:1px solid var(--line-2);color:var(--ink-2)}
.btn-ghost:hover{border-color:var(--ink-2);background:var(--alt)}
.btn-white{padding:13px 24px;border-radius:7px;font-size:.94rem;font-weight:600;background:#fff;color:var(--ink)}
.btn-white:hover{background:#EDF1F6}
.btn-outline-w{padding:13px 24px;border-radius:7px;font-size:.94rem;font-weight:600;background:transparent;color:#fff;border:1px solid rgba(255,255,255,.34)}
.btn-outline-w:hover{background:rgba(255,255,255,.1)}
.btn-block{width:100%;justify-content:center;padding:13px 20px;border-radius:7px;font-size:.94rem}

/* ── type scale ── */
.eyebrow,.label{display:inline-block;font-size:.70rem;font-weight:700;letter-spacing:.13em;
  text-transform:uppercase;color:var(--brand);margin-bottom:18px}
.eyebrow .pulse{display:none}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;letter-spacing:-.015em;line-height:1.14;color:var(--ink)}
.htitle{font-size:clamp(1.75rem,3.1vw,2.35rem);margin-bottom:16px;max-width:22ch}
.htitle .g,.hero h1 .g,.page-head h1 .g{color:var(--brand);-webkit-text-fill-color:currentColor;background:none}
.hsub{color:var(--slate);font-size:1rem;max-width:58ch}
.center{text-align:center}
.center .hsub,.center .htitle{margin-left:auto;margin-right:auto}

/* ── hero: text left, real product screenshot right ── */
.hero{position:relative;padding:78px 24px 8px}
.hero-in{max-width:1120px;margin:0 auto;display:grid;grid-template-columns:1fr;gap:44px}
.hero h1{font-size:clamp(2.2rem,5vw,3.35rem);line-height:1.06;letter-spacing:-.025em;margin-bottom:22px;max-width:17ch}
.hero p.lead{font-size:1.1rem;color:var(--ink-2);max-width:56ch;margin-bottom:30px;line-height:1.6}
.hero-cta{display:flex;gap:10px;flex-wrap:wrap}
.hero-trust{display:flex;gap:0;margin-top:52px;border-top:1px solid var(--line);flex-wrap:wrap}
.ht{flex:1;min-width:150px;padding:20px 22px 0 0}
.ht b{font-family:var(--serif);font-size:1.55rem;font-weight:600;color:var(--ink);display:block}
.ht span{font-size:.8rem;color:var(--slate)}

/* real screenshot frame */
.shot{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff}
.shot img{width:100%;display:block}
.shot-cap{font-size:.78rem;color:var(--muted);margin-top:10px}
.shot-wide{margin-top:56px}
.shot-note{display:flex;gap:10px;align-items:flex-start;font-size:.82rem;color:var(--slate);
  background:var(--brand-wash);border-left:2px solid var(--brand);padding:11px 14px;margin-top:14px;border-radius:0 6px 6px 0}

/* ── section shells with varied rhythm ── */
.section{padding:88px 24px;position:relative}
.section.tint{background:var(--alt)}
.section.tight{padding:56px 24px}
.section.dark{background:var(--ink-dark);color:#fff}
.section.dark h2,.section.dark h3,.section.dark .htitle{color:#fff}
.section.dark .hsub,.section.dark p{color:rgba(255,255,255,.72)}
.section.dark .label{color:#7FB2E8}
.rule{height:1px;background:var(--line);max-width:1120px;margin:0 auto}

/* two-column editorial split: narrow text column, wide content */
.split{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:64px;align-items:start}
.split.rev{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr)}
.stack{display:flex;flex-direction:column;gap:14px}

/* ── list of features as hairline rows, not cards ── */
.rows{margin-top:34px;border-top:1px solid var(--line)}
.row-i{display:grid;grid-template-columns:38px 1fr;gap:18px;padding:22px 0;border-bottom:1px solid var(--line);align-items:start}
.row-i .k{font-family:var(--mono);font-size:.76rem;color:var(--brand);padding-top:3px;font-weight:500}
.row-i b{font-size:.98rem;font-weight:600;display:block;margin-bottom:4px;font-family:var(--serif);letter-spacing:-.01em}
.row-i span{font-size:.9rem;color:var(--slate);line-height:1.62}

/* checks */
.checks{display:flex;flex-direction:column;gap:18px;margin-top:28px}
.chk{display:grid;grid-template-columns:16px 1fr;gap:13px;align-items:start}
.chk i{color:var(--brand);font-size:.8rem;margin-top:6px}
.chk b{font-size:.95rem;font-weight:600;display:block;margin-bottom:3px}
.chk span{font-size:.9rem;color:var(--slate);line-height:1.62}

/* ── products: two wide editorial blocks ── */
.prod-grid{display:grid;grid-template-columns:1fr 1fr;gap:0;margin-top:48px;border-top:1px solid var(--line)}
.prod{display:block;padding:38px 40px 38px 0;border-bottom:1px solid var(--line);transition:background .18s}
.prod + .prod{padding-left:40px;border-left:1px solid var(--line)}
.prod:hover{background:var(--alt)}
.prod .tag{display:block;font-family:var(--mono);font-size:.72rem;color:var(--brand);margin-bottom:14px;letter-spacing:.02em}
.prod.ar .tag{color:var(--purple)}
.prod h3{font-size:1.5rem;margin-bottom:10px}
.prod p{color:var(--slate);font-size:.94rem;line-height:1.62;margin-bottom:18px;max-width:44ch}
.prod ul{list-style:none;display:flex;flex-direction:column;gap:9px;margin-bottom:22px}
.prod li{font-size:.9rem;color:var(--ink-2);display:grid;grid-template-columns:14px 1fr;gap:10px;align-items:start}
.prod li i{color:var(--brand);font-size:.62rem;margin-top:7px}
.prod.ar li i{color:var(--purple)}
.prod .more{font-size:.9rem;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:8px;
  border-bottom:1.5px solid transparent;transition:border-color .18s}
.prod.ar .more{color:var(--purple)}
.prod:hover .more{border-bottom-color:currentColor}

/* ── detection pipeline (custom diagram) ── */
.pipe{margin-top:44px}
.pipe svg{width:100%;height:auto}
.layers{margin-top:42px;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
.layer{display:grid;grid-template-columns:30px 1fr;gap:15px;padding:19px 0;border-bottom:1px solid var(--line);align-items:start}
.layer .n{font-family:var(--mono);font-size:.76rem;color:var(--brand);padding-top:3px;background:none;width:auto;height:auto;display:block}
.layer b{font-size:.94rem;font-weight:600;display:block;margin-bottom:3px}
.layer span{font-size:.87rem;color:var(--slate);line-height:1.58}

/* ── plain info cards (used sparingly now) ── */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin-top:44px;background:var(--line);border:1px solid var(--line)}
.cards.two{grid-template-columns:repeat(2,1fr)}
.card-x{background:#fff;padding:30px 28px}
.card-x .ic{width:auto;height:auto;background:none;border:none;color:var(--brand);font-size:1rem;margin-bottom:14px;display:block}
.card-x h3{font-size:1.06rem;margin-bottom:8px}
.card-x p{color:var(--slate);font-size:.9rem;line-height:1.62}
.card-x ul{list-style:none;margin-top:12px;display:flex;flex-direction:column;gap:7px}
.card-x li{font-size:.87rem;color:var(--slate);display:grid;grid-template-columns:13px 1fr;gap:9px;align-items:start}
.card-x li i{color:var(--brand);font-size:.62rem;margin-top:7px}

/* risk tier ladder */
.how-viz{border:1px solid var(--line);border-radius:10px;padding:24px;background:#fff}
.hv-title{font-family:var(--serif);font-weight:600;font-size:1rem;margin-bottom:16px}
.hv-items{display:flex;flex-direction:column}
.hv{display:grid;grid-template-columns:14px 1fr;gap:13px;align-items:start;padding:14px 0;border-bottom:1px solid var(--line)}
.hv:last-child{border-bottom:none}
.hv i{font-size:.72rem;margin-top:5px}
.hv .t{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;margin-bottom:3px}
.hv.hi .t{color:var(--red)}.hv.md .t{color:var(--amber)}.hv.lo .t{color:var(--green)}
.hv .d{font-size:.88rem;color:var(--slate)}

/* steps */
.steps{display:flex;flex-direction:column;margin-top:28px;border-top:1px solid var(--line)}
.stp{display:grid;grid-template-columns:34px 1fr;gap:16px;padding:22px 0;border-bottom:1px solid var(--line);align-items:start}
.stp .num{font-family:var(--mono);font-size:.78rem;color:var(--brand);background:none;width:auto;height:auto;box-shadow:none;display:block;padding-top:3px}
.stp h4{font-size:1rem;margin-bottom:4px}
.stp p{color:var(--slate);font-size:.9rem;line-height:1.6}

/* ── page head ── */
.page-head{padding:66px 24px 10px}
.page-head .sec-in{padding:0 24px}
.crumb{font-family:var(--mono);font-size:.76rem;color:var(--muted);margin-bottom:20px}
.crumb a:hover{color:var(--brand)}
.page-head h1{font-size:clamp(2rem,4.2vw,2.9rem);line-height:1.08;letter-spacing:-.022em;margin-bottom:16px;max-width:19ch}
.page-head p.lead{font-size:1.06rem;color:var(--ink-2);max-width:60ch;line-height:1.6}

/* ── pricing ── */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin-top:46px;background:var(--line);border:1px solid var(--line)}
.tier{display:flex;flex-direction:column;background:#fff;padding:34px 30px;border-radius:0;box-shadow:none;border:none}
.tier.feat-tier{background:var(--brand-wash)}
.tier.feat-tier::before{content:"Most common";display:block;font-family:var(--mono);font-size:.7rem;color:var(--brand);
  position:static;transform:none;background:none;padding:0;margin-bottom:10px;letter-spacing:.02em;text-transform:none;font-weight:500}
.tier h3{font-size:1.28rem;margin-bottom:6px}
.tier .who{font-size:.86rem;color:var(--slate);margin-bottom:22px;min-height:44px}
.tier .price{font-family:var(--serif);font-size:1.45rem;font-weight:600;margin-bottom:2px}
.tier .price small{font-size:.8rem;font-weight:400;color:var(--slate);font-family:var(--font)}
.tier ul{list-style:none;display:flex;flex-direction:column;gap:11px;margin:24px 0 28px}
.tier li{font-size:.89rem;display:grid;grid-template-columns:13px 1fr;gap:10px;align-items:start;color:var(--ink-2)}
.tier li i{color:var(--brand);font-size:.62rem;margin-top:7px}
.tier .btn{margin-top:auto;justify-content:center}

/* ── FAQ ── */
.faq-list{max-width:780px;margin:44px 0 0;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line);background:none;border-radius:0}
.faq-q{width:100%;text-align:left;background:none;border:none;font-family:var(--serif);font-size:1.02rem;
  font-weight:600;color:var(--ink);padding:20px 0;cursor:pointer;display:flex;align-items:center;
  justify-content:space-between;gap:18px;letter-spacing:-.01em}
.faq-q:hover{color:var(--brand)}
.faq-q i{color:var(--muted);font-size:.74rem;transition:transform .22s;flex-shrink:0}
.faq-item.open .faq-q i{transform:rotate(180deg);color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-item.open .faq-a{max-height:560px}
.faq-a p{padding:0 40px 22px 0;color:var(--slate);font-size:.94rem;line-height:1.7;max-width:68ch}

/* ── forms ── */
.form-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:32px;box-shadow:none}
.fld{margin-bottom:18px}
.fld label{display:block;font-size:.82rem;font-weight:600;letter-spacing:0;text-transform:none;color:var(--ink-2);margin-bottom:7px}
.fld input,.fld select,.fld textarea{width:100%;font-family:var(--font);font-size:.94rem;color:var(--ink);
  background:#fff;border:1px solid var(--line-2);border-radius:6px;padding:11px 13px;transition:border-color .15s,box-shadow .15s}
.fld textarea{min-height:130px;resize:vertical}
.fld input:focus,.fld select:focus,.fld textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(10,78,155,.1)}
.fld .hint{font-size:.78rem;color:var(--muted);margin-top:6px}
.form-note{font-size:.8rem;color:var(--muted);margin-top:16px;line-height:1.6}
.form-msg{display:none;border-radius:6px;padding:13px 15px;font-size:.89rem;margin-bottom:18px}
.form-msg.ok{display:block;background:#EEF7F2;border:1px solid #BFE0D0;color:var(--green)}
.form-msg.err{display:block;background:#FDF2F1;border:1px solid #F2CFCB;color:var(--red)}

/* contact side */
.contact-side{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.cinfo{display:grid;grid-template-columns:18px 1fr;gap:14px;align-items:start;background:none;border:none;
  border-bottom:1px solid var(--line);border-radius:0;padding:20px 0}
.cinfo .ic{width:auto;height:auto;background:none;border:none;color:var(--brand);font-size:.9rem;padding-top:3px}
.cinfo b{display:block;font-size:.94rem;font-weight:600;margin-bottom:4px}
.cinfo span,.cinfo a{font-size:.89rem;color:var(--slate);line-height:1.6}
.cinfo a:hover{color:var(--brand);text-decoration:underline}

/* careers */
.roles-empty{max-width:100%;margin:40px 0 0;text-align:left;background:var(--alt);border:1px solid var(--line);
  border-radius:10px;padding:38px 34px;box-shadow:none;display:grid;grid-template-columns:auto 1fr;gap:24px;align-items:center}
.roles-empty .ic{width:auto;height:auto;margin:0;background:none;border:none;color:var(--brand);font-size:1.3rem}
.roles-empty h3{font-size:1.2rem;margin-bottom:7px}
.roles-empty p{color:var(--slate);font-size:.94rem;max-width:60ch;margin:0}

/* ── closing band ── */
.cta-box{background:var(--ink-dark);color:#fff;padding:72px 40px;text-align:center;border-radius:12px;margin:0 auto}
.cta-box h2{color:#fff;font-size:clamp(1.6rem,3vw,2.15rem);margin-bottom:14px}
.cta-box p{color:rgba(255,255,255,.74);font-size:1rem;max-width:52ch;margin:0 auto 28px}
.cta-btns{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.cta-mail{margin-top:18px;font-size:.84rem;color:rgba(255,255,255,.6)}

/* ── footer ── */
.footer{border-top:1px solid var(--line);background:#fff;padding:52px 24px 28px}
.footer-cols{max-width:1120px;margin:0 auto;display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;padding-bottom:36px}
.footer-cols h4{font-family:var(--font);font-size:.76rem;font-weight:600;letter-spacing:.04em;color:var(--ink);margin-bottom:14px}
.footer-cols a{display:block;font-size:.87rem;color:var(--slate);margin-bottom:10px;transition:color .15s}
.footer-cols a:hover{color:var(--brand)}
.footer-brand{display:flex;align-items:center;gap:9px}
.footer-about{font-size:.87rem;color:var(--slate);line-height:1.65;margin-top:14px;max-width:34ch}
.footer-in{max-width:1120px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap}
.footer-bottom{border-top:1px solid var(--line);padding-top:22px}
.footer-copy{font-size:.82rem;color:var(--muted)}
.footer-links{display:flex;gap:22px}
.footer-links a{font-size:.82rem;color:var(--muted)}
.footer-links a:hover{color:var(--brand)}

/* ── reveal (kept, but gentler) ── */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .5s ease,transform .5s ease}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.06s}.d2{transition-delay:.12s}.d3{transition-delay:.18s}

@media(max-width:900px){
  .nav{gap:16px}
  .nav-links{display:none}
  .split,.split.rev,.prod-grid,.layers,.cards,.cards.two,.tiers{grid-template-columns:1fr}
  .prod + .prod{padding-left:0;border-left:none}
  .prod{padding-right:0}
  .footer-cols{grid-template-columns:1fr 1fr;gap:28px}
  .section{padding:60px 24px}
  .hero{padding:52px 24px 8px}
  .roles-empty{grid-template-columns:1fr}
  .cta-box{padding:52px 24px}
}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
}

/* ══ Flagship layout ═══════════════════════════════════════════════════════
   Borrowed from product-led sites: one idea per screen, oversized type,
   full-bleed dark chapters, and the product shown large rather than
   described in cards. */
.stage{position:relative;padding:clamp(88px,13vh,150px) 24px;overflow:hidden}
.stage-in{max-width:1120px;margin:0 auto}
.stage.dark{background:#07131F;color:#fff}
.stage.dark h1,.stage.dark h2,.stage.dark h3{color:#fff}
.stage.dark p{color:rgba(255,255,255,.68)}
.stage.dark .kicker{color:#6FA8DF}
.stage.ink{background:#0B1B2B;color:#fff}
.stage.ink h2,.stage.ink h3{color:#fff}
.stage.ink p{color:rgba(255,255,255,.68)}
.stage.ink .kicker{color:#6FA8DF}
.stage.pale{background:var(--alt)}

.kicker{display:block;font-family:var(--mono);font-size:.78rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--brand);margin-bottom:26px}
.display{font-family:var(--serif);font-weight:600;letter-spacing:-.035em;line-height:.98;
  font-size:clamp(2.6rem,7.4vw,5.4rem);margin-bottom:26px;max-width:15ch}
.display.sm{font-size:clamp(2.1rem,4.6vw,3.4rem);line-height:1.04;max-width:18ch}
.display .dim{color:rgba(255,255,255,.42)}
.stage:not(.dark):not(.ink) .display .dim{color:var(--muted)}
.lede{font-size:clamp(1.05rem,1.5vw,1.28rem);line-height:1.55;max-width:52ch;color:var(--ink-2)}
.stage.dark .lede,.stage.ink .lede{color:rgba(255,255,255,.7)}
.stage-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:38px}

/* browser-framed product shot */
.device{border-radius:14px;overflow:hidden;background:#fff;border:1px solid rgba(255,255,255,.1);
  box-shadow:0 50px 120px rgba(0,0,0,.45),0 8px 24px rgba(0,0,0,.25)}
.stage:not(.dark):not(.ink) .device{border-color:var(--line);box-shadow:0 34px 80px rgba(15,23,42,.14)}
.device-bar{display:flex;align-items:center;gap:7px;padding:11px 15px;background:#F3F5F8;border-bottom:1px solid var(--line)}
.device-bar i{width:10px;height:10px;border-radius:50%;background:#D6DBE2;display:block}
.device-url{margin-left:12px;font-family:var(--mono);font-size:.72rem;color:var(--muted)}
.device img{width:100%;display:block}
.device-wide{margin-top:60px}

/* big numbers */
.figures{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:8px}
.fig{padding:34px 26px 34px 0;border-right:1px solid rgba(255,255,255,.13)}
.fig:last-child{border-right:none}
.stage:not(.dark):not(.ink) .fig{border-right-color:var(--line)}
.fig b{display:block;font-family:var(--serif);font-weight:600;font-size:clamp(2.2rem,4.2vw,3.2rem);
  letter-spacing:-.03em;line-height:1;margin-bottom:10px}
.fig span{font-size:.88rem;color:rgba(255,255,255,.6)}
.stage:not(.dark):not(.ink) .fig span{color:var(--slate)}

/* chapter: text beside a large image */
.chapter{display:grid;grid-template-columns:minmax(0,.78fr) minmax(0,1.22fr);gap:70px;align-items:center}
.chapter.flip{grid-template-columns:minmax(0,1.22fr) minmax(0,.78fr)}
.chapter.flip .chapter-copy{order:2}
.chapter-copy h2{margin-bottom:18px}
.chapter-copy p{font-size:1.02rem;line-height:1.62;color:var(--slate)}
.chapter-list{list-style:none;margin-top:26px;display:flex;flex-direction:column;gap:0}
.chapter-list li{display:grid;grid-template-columns:26px 1fr;gap:14px;padding:15px 0;
  border-top:1px solid var(--line);font-size:.94rem;color:var(--ink-2);align-items:start}
.stage.dark .chapter-list li,.stage.ink .chapter-list li{border-top-color:rgba(255,255,255,.13);color:rgba(255,255,255,.78)}
.chapter-list li:last-child{border-bottom:1px solid var(--line)}
.stage.dark .chapter-list li:last-child,.stage.ink .chapter-list li:last-child{border-bottom-color:rgba(255,255,255,.13)}
.chapter-list .k{font-family:var(--mono);font-size:.76rem;color:var(--brand);padding-top:2px}
.stage.dark .chapter-list .k,.stage.ink .chapter-list .k{color:#6FA8DF}

.btn-lg.btn-primary,.btn-lg.btn-ghost,.btn-white,.btn-outline-w{padding:15px 28px;font-size:.98rem;border-radius:8px}

/* slow, deliberate reveal for flagship sections */
.rise{opacity:0;transform:translateY(26px);transition:opacity .85s cubic-bezier(.16,1,.3,1),transform .85s cubic-bezier(.16,1,.3,1)}
.rise.in{opacity:1;transform:none}
.rise.r1{transition-delay:.1s}.rise.r2{transition-delay:.2s}.rise.r3{transition-delay:.3s}

@media(max-width:900px){
  .chapter,.chapter.flip{grid-template-columns:1fr;gap:36px}
  .chapter.flip .chapter-copy{order:0}
  .figures{grid-template-columns:1fr 1fr}
  .fig{padding:24px 18px 24px 0;border-bottom:1px solid rgba(255,255,255,.13)}
  .fig:nth-child(2n){border-right:none}
  .stage{padding:68px 24px}
  .device-wide{margin-top:38px}
}
@media(prefers-reduced-motion:reduce){ .rise{opacity:1;transform:none;transition:none} }