@font-face{font-family:Univa;src:url("../../assets/fonts/UnivaNova-Thin.woff2") format("woff2");font-weight:200;font-style:normal;font-display:swap}
@font-face{font-family:Univa;src:url("../../assets/fonts/UnivaNova-Light.woff2") format("woff2");font-weight:300;font-style:normal;font-display:swap}
@font-face{font-family:Univa;src:url("../../assets/fonts/UnivaNova-Regular.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:Univa;src:url("../../assets/fonts/UnivaNova-Medium.woff2") format("woff2");font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:Univa;src:url("../../assets/fonts/UnivaNova-SemiBold.woff2") format("woff2");font-weight:600;font-style:normal;font-display:swap}

:root{
  --gun:#1E2224;--deep:#15181A;--char:#36373B;--gains:#D9DDE0;--gains-hi:#EDEFF1;
  --auburn:#953315;--auburn-hi:#B84520;--straw:#F3D380;--blue:#758FAF;
  --ink:#1E2224;--muted:#575F64;--dark-text:#E4E7E9;--dark-muted:#A9B0B5;
  --line-light:rgba(30,34,36,.16);--line-dark:rgba(217,221,224,.2);
  --max:1460px;--gutter:clamp(20px,4vw,60px);--nav-height:78px;
  --ease:cubic-bezier(.22,.68,.26,1)
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--gains);color:var(--ink);font-family:Univa,"Helvetica Neue",Arial,sans-serif;font-size:16.11px;font-weight:400;line-height:1.68;letter-spacing:.002em;-webkit-font-smoothing:antialiased}
button,a{touch-action:manipulation}
a{color:inherit}
img{display:block;max-width:100%}
h1,h2,h3,h4,h5,p{overflow-wrap:break-word}
::selection{background:var(--auburn);color:#fff}
:focus-visible{outline:2px solid var(--straw);outline-offset:4px}
.shell{width:min(calc(100% - var(--gutter)*2),var(--max));margin-inline:auto}
.skip-link{position:fixed;z-index:100;top:8px;left:8px;padding:.6rem 1rem;background:var(--straw);color:var(--gun);transform:translateY(-180%)}
.skip-link:focus{transform:none}

/* Institutional header, with chapter navigation retained. */
.site-header{position:sticky;top:0;z-index:30;background:rgba(30,34,36,.94);color:var(--dark-text);border-bottom:1px solid var(--line-dark);backdrop-filter:blur(18px) saturate(1.5);-webkit-backdrop-filter:blur(18px) saturate(1.5)}
.header-row{display:flex;align-items:center;gap:clamp(20px,3vw,40px);min-height:var(--nav-height)}
.brand{display:inline-flex;align-items:center;flex:none;min-height:46px}
.brand img{width:109px;height:auto}
.main-nav{display:flex;align-items:center;gap:clamp(18px,2.5vw,36px);margin-left:auto;min-height:var(--nav-height)}
.main-nav a{position:relative;display:inline-flex;align-items:center;gap:.42rem;padding:6px 0;color:rgba(228,231,233,.7);font-size:.94rem;font-weight:400;text-decoration:none;white-space:nowrap;transition:color .25s var(--ease)}
.main-nav a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:1px;background:var(--auburn-hi);transition:right .3s var(--ease)}
.main-nav a:hover,.main-nav a:focus-visible,.main-nav a[aria-current="location"]{color:#fff}
.main-nav a:hover::after,.main-nav a:focus-visible::after,.main-nav a[aria-current="location"]::after{right:0}
.main-nav span{color:var(--straw);font-size:.75rem;font-weight:500}
.header-cta,.button{display:inline-flex;align-items:center;justify-content:center;gap:.65rem;background:var(--auburn);color:#fff;border:1px solid transparent;font-size:.94rem;font-weight:500;line-height:1.15;text-decoration:none;white-space:nowrap;transition:background .25s var(--ease),transform .25s var(--ease)}
.header-cta{min-height:46px;padding:13px 24px}
.header-cta:hover,.button:hover{background:var(--auburn-hi);transform:translateY(-1px)}
.header-cta:active,.button:active{transform:translateY(1px)}

/* Chapter surfaces follow the institutional dark / light cadence. */
.chapter{scroll-margin-top:var(--nav-height)}
.chapter-head{position:relative;overflow:hidden;padding:clamp(76px,8vw,124px) 0 clamp(70px,7vw,112px)}
.chapter-meta{display:flex;justify-content:space-between;align-items:baseline;gap:1.25rem;font-size:.9rem;font-weight:500}
.chapter-meta a{color:inherit;font-size:.85rem;font-weight:400;text-underline-offset:.3em;opacity:.72;white-space:nowrap}
.chapter-meta a:hover{opacity:1}
#value-review .chapter-meta a,#value-partnership .chapter-meta a{color:var(--gun);opacity:1}
.chapter h1,.chapter-title{margin:clamp(24px,3vw,42px) 0 0;font-size:clamp(3rem,5vw,5.5rem);font-weight:200;letter-spacing:-.043em;line-height:.97;text-wrap:balance}
.chapter-title{max-width:1120px;font-size:clamp(2.65rem,4.35vw,4.8rem)}
.chapter-lead{max-width:72ch;margin:clamp(24px,2.8vw,38px) 0 0;font-size:clamp(1.11rem,1.4vw,1.4rem);font-weight:300;line-height:1.5;text-wrap:balance}
.chapter-body{padding-block:clamp(74px,8vw,116px)}
#sistema{background:var(--gains)}
#sistema .chapter-head{background:var(--deep);color:var(--dark-text)}
#sistema .chapter-meta{color:var(--straw)}
#sistema .chapter-lead{color:var(--dark-muted)}
#value-review{background:#fff}
#value-review .chapter-head{background:var(--gains-hi);color:var(--gun);border-top:1px solid var(--line-light);border-bottom:1px solid var(--line-light)}
#value-review .chapter-meta{color:var(--auburn)}
#value-review .chapter-lead{color:var(--muted)}
#value-build{background:var(--gains-hi)}
#value-build .chapter-head{background:var(--gun);color:var(--dark-text)}
#value-build .chapter-meta{color:var(--straw)}
#value-build .chapter-lead{color:var(--dark-muted)}
#value-partnership{background:#fff}
#value-partnership .chapter-head{background:var(--gains);color:var(--gun);border-top:1px solid var(--line-light);border-bottom:1px solid var(--line-light)}
#value-partnership .chapter-meta{color:var(--auburn)}
#value-partnership .chapter-lead{color:var(--muted)}

/* The system process is a functional editorial counterpart to the opening thesis. */
#sistema .chapter-head{padding-block:clamp(58px,6.2vw,90px)}
.system-hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(360px,.82fr);gap:clamp(52px,6vw,108px);align-items:center}
.system-hero-copy{min-width:0}
.system-hero-copy h1{font-size:clamp(3.15rem,5vw,5.8rem)}
.system-hero-map{min-width:0;padding-left:clamp(32px,4vw,60px);border-left:1px solid var(--line-dark)}
.system-hero-map .section-heading{margin:0 0 18px;padding:0;border:0}
.system-hero-map .section-heading span{color:var(--straw)}
.system-hero-map .section-heading h2{color:var(--dark-text);font-size:clamp(1.18rem,1.55vw,1.55rem);font-weight:300;line-height:1.22}
.system-hero-map .flow{display:block;margin:0}
.system-hero-map .flow-item{display:grid;grid-template-columns:40px minmax(0,1fr);column-gap:18px;min-height:0;padding:14px 0 15px;border:0;border-top:1px solid var(--line-dark);background:transparent;transition:transform .3s var(--ease)}
.system-hero-map .flow-item:hover{transform:translateX(4px)}
.system-hero-map .flow-item::after{display:none}
.system-hero-map .flow-item .step-no{grid-row:span 2;margin:1px 0 0;color:var(--straw);font-size:.82rem;font-weight:500}
.system-hero-map .flow-item.accent-cool .step-no{color:#A8BED7}
.system-hero-map .flow-item h3{margin:0 0 2px;color:var(--dark-text);font-size:clamp(1.1rem,1.4vw,1.4rem);font-weight:400;line-height:1.2;text-transform:none}
.system-hero-map .flow-item p{grid-column:2;margin:0;color:var(--dark-muted);font-size:.94rem;font-weight:300;line-height:1.38}

/* Section rhythm comes from the BVB landing; every graphic serves a different decision. */
.section-heading{display:flex;align-items:baseline;gap:clamp(20px,2.4vw,36px);margin:clamp(78px,8vw,116px) 0 clamp(28px,3vw,42px)}
.section-heading:first-child{margin-top:0}
.section-heading>span{flex:none;color:var(--auburn);font-size:.82rem;font-weight:500;font-variant-numeric:tabular-nums}
.section-heading h2,.section-heading h3{max-width:1060px;margin:0;color:var(--gun);font-size:clamp(1.95rem,3.15vw,3.45rem);font-weight:200;letter-spacing:-.036em;line-height:1.04;text-wrap:balance}
.flow,.gate-flow{display:grid;list-style:none;margin:0;padding:0}
.flow-four{grid-template-columns:repeat(4,minmax(0,1fr))}
.flow-three,.gate-flow{grid-template-columns:repeat(3,minmax(0,1fr))}
.flow-item{position:relative;min-width:0;padding:0 clamp(18px,2.4vw,36px) 0 0;border-top:2px solid var(--auburn)}
.flow-item:not(:first-child){padding-left:clamp(18px,2.4vw,36px);border-left:1px solid var(--line-light)}
.flow-item.accent-cool{border-top-color:var(--blue)}
.flow-item::after{content:"→";position:absolute;right:-.56rem;top:27px;z-index:2;color:var(--char);font-size:1.2rem}
.flow-item:last-child::after{display:none}
.step-no{display:block;margin:20px 0 14px;color:var(--auburn);font-size:.9rem;font-weight:500}
.accent-cool .step-no{color:#3E5B7A}
.flow-item h3,.flow-item h4{margin:0 0 10px;font-size:clamp(1.22rem,1.5vw,1.52rem);font-weight:400;line-height:1.22;letter-spacing:-.018em;text-transform:none}
.flow-item p{margin:0;color:var(--muted);font-size:1.02rem;font-weight:300;line-height:1.5}
.branch{position:relative;padding:clamp(28px,4vw,60px);background:#fff;border-top:2px solid var(--auburn)}
.branch-root{position:relative;width:max-content;min-width:180px;margin:0 auto clamp(40px,4vw,56px);padding:11px 30px;background:var(--gun);color:#fff;text-align:center;font-size:1.1rem;font-weight:500}
.branch-root::after{content:"";position:absolute;left:50%;top:100%;height:clamp(40px,4vw,56px);border-left:1px solid var(--char)}
.branch-options{position:relative;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,2vw,30px)}
.branch .branch-options::before{content:"";position:absolute;left:16.66%;right:16.66%;top:-20px;border-top:1px solid var(--char)}
.decision{position:relative;min-width:0;padding:clamp(24px,2.6vw,38px);background:var(--gains-hi);border-top:3px solid var(--auburn);transition:transform .3s var(--ease)}
.decision:hover{transform:translateY(-3px)}
.branch .decision::before{content:"";position:absolute;left:50%;bottom:100%;height:20px;border-left:1px solid var(--char)}
.decision h3,.decision h4{margin:0 0 12px;color:var(--gun);font-size:clamp(1.2rem,1.5vw,1.55rem);font-weight:400;line-height:1.2;letter-spacing:-.018em}
.decision p{margin:0;max-width:36ch;color:var(--muted);font-size:1.02rem;font-weight:300;line-height:1.5}
.decision-dark{background:var(--gun);border-top-color:var(--gun)}
.decision-dark h3,.decision-dark h4{color:#fff}
.decision-dark p{color:var(--dark-muted)}
.decision-cool{border-top-color:var(--blue)}
.gate-flow{gap:0;padding:clamp(26px,3vw,46px);background:var(--gun)}
.gate{position:relative;min-width:0;padding:0 clamp(20px,2.6vw,38px);color:var(--dark-text)}
.gate:first-child{padding-left:0}
.gate:not(:first-child){border-left:1px solid var(--line-dark)}
.gate:last-child{padding-right:0}
.gate:not(:last-child)::after{content:"→";position:absolute;right:-.6rem;top:44%;z-index:2;color:var(--straw);font-size:1.2rem}
.eyebrow{display:block;color:var(--auburn);font-size:.84rem;font-weight:500;line-height:1.35}
.gate .eyebrow{color:var(--straw)}
.gate h3{margin:18px 0 10px;color:#fff;font-size:clamp(1.45rem,2vw,2rem);font-weight:300;letter-spacing:-.025em;line-height:1.12}
.gate p{margin:0;max-width:33ch;color:var(--dark-muted);font-size:1rem;font-weight:300;line-height:1.5}
.principle{margin:22px 0 0;padding-left:18px;border-left:2px solid var(--auburn);color:var(--muted);font-size:1.09rem;font-weight:300;line-height:1.52}
.duo,.proof-decision{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(24px,3vw,44px)}
.outline{min-width:0;padding:30px 0 0;border-top:2px solid var(--auburn)}
.outline-cool{border-top-color:var(--blue)}
.outline-dark{border-top-color:var(--gun)}
.outline h3,.outline h4{margin:0 0 10px;color:var(--gun);font-size:clamp(1.3rem,1.8vw,1.8rem);font-weight:400;line-height:1.2;letter-spacing:-.02em}
.outline p{margin:0;color:var(--muted);font-size:1.03rem;font-weight:300;line-height:1.53}
.outline .note{margin-top:16px;color:var(--muted);font-size:.96rem}
.chapter-next{display:flex;justify-content:space-between;flex-wrap:wrap;gap:20px;margin-top:clamp(72px,7vw,108px);padding-top:24px;border-top:1px solid var(--line-light)}
.chapter-next a{color:var(--auburn);font-size:1rem;font-weight:500;text-decoration-thickness:1px;text-underline-offset:.25em}
.chapter-next a:hover{color:var(--gun)}

/* Review: an open evidence sequence and one dominant executive deliverable. */
.statement{min-width:0;padding:clamp(28px,3vw,42px)}
.statement-dark{background:var(--gun);color:var(--dark-text)}
.statement-light{background:var(--gains-hi);border-top:2px solid var(--blue)}
.statement .eyebrow,.blueprint .eyebrow,.intervention .eyebrow{color:var(--straw)}
.statement-light .eyebrow{color:var(--auburn)}
.statement h4{margin:0 0 12px;font-size:clamp(1.4rem,1.8vw,1.8rem);font-weight:400;letter-spacing:-.018em;line-height:1.2}
.statement p{margin:0;color:var(--muted);font-size:1.03rem;font-weight:300;line-height:1.52}
.statement-dark p{color:var(--dark-muted)}
.review-entry{grid-template-columns:.9fr 1.1fr}
.review-flow .flow-item{min-height:160px;border-top:0;border-left:1px solid var(--line-light);padding-top:2px}
.review-flow .flow-item:first-child{padding-left:24px}
.review-flow .flow-item::after{display:none}
.review-flow .step-no{margin:0 0 24px;font-size:clamp(1.8rem,2.6vw,2.7rem);font-weight:200;letter-spacing:-.03em}
.review-flow h4{font-size:clamp(1.2rem,1.7vw,1.7rem)}
.review-decisions{gap:0;padding:28px;background:var(--gun)}
.review-decisions .decision{padding:18px 24px 18px 26px;background:transparent;border:0;border-left:2px solid var(--auburn)}
.review-decisions .decision-dark{border-left-color:var(--straw)}
.review-decisions .decision-cool{border-left-color:var(--blue)}
.review-decisions .decision h4{color:#fff}
.review-decisions .decision p{color:var(--dark-muted)}
.deliverables{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:clamp(30px,4vw,64px);align-items:stretch}
.blueprint{display:flex;flex-direction:column;align-items:flex-start;min-width:0;min-height:390px;padding:clamp(36px,4vw,64px);background:var(--gun);color:#fff;border-top:4px solid var(--auburn)}
.blueprint h4{max-width:15ch;margin:clamp(30px,4vw,56px) 0 22px;font-size:clamp(2.5rem,3.9vw,4.1rem);font-weight:200;line-height:1;letter-spacing:-.035em}
.blueprint p{max-width:42ch;margin:0 0 38px;color:var(--dark-text);font-size:1.17rem;font-weight:300;line-height:1.5}
.blueprint strong{margin-top:auto;color:var(--straw);font-size:.98rem;font-weight:500}
.support{min-width:0}
.support>.eyebrow{margin-bottom:24px;color:var(--auburn)}
.support dl{margin:0}
.support dl>div{padding:17px 0 18px;border-top:1px solid var(--line-light)}
.support dl>div:last-child{border-bottom:1px solid var(--line-light)}
.support dt{font-size:1.17rem;font-weight:500;line-height:1.22}
.support dd{margin:5px 0 0;color:var(--muted);font-size:1rem;font-weight:300;line-height:1.45}

/* Build: intervention, observation and value are different visual states. */
#value-build .flow-three .flow-item{min-height:160px}
.intervention{min-width:0;padding:clamp(34px,4vw,60px);background:var(--gun);color:#fff;border-top:3px solid var(--auburn)}
.intervention h4{max-width:1100px;margin:clamp(22px,3vw,40px) 0 clamp(30px,4vw,54px);font-size:clamp(2rem,3.3vw,3.5rem);font-weight:200;letter-spacing:-.036em;line-height:1.05;text-wrap:balance}
.intervention-parts,.continuity-parts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0}
.intervention-parts>div,.continuity-parts>div{min-width:0;padding:18px clamp(20px,3vw,42px) 0;border-top:1px solid var(--line-dark)}
.intervention-parts>div:first-child,.continuity-parts>div:first-child{padding-left:0}
.intervention-parts h5,.continuity-parts h5{margin:0 0 8px;font-size:1.17rem;font-weight:500;line-height:1.2}
.intervention-parts p,.continuity-parts p{margin:0;color:var(--dark-muted);font-size:1rem;font-weight:300;line-height:1.5}
.prove-flow{padding:28px;background:#fff}
.prove-flow .flow-item{border-top:0;min-height:146px}
.prove-flow .step-no{display:none}
.outcomes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(22px,3vw,42px)}
.outcomes .outline{padding-top:26px}

/* Partnership: a fork after proof, never an automatic service transition. */
.proof-decision{position:relative;grid-template-columns:1.03fr .97fr;gap:0}
.proof-decision::after{content:"→";position:absolute;left:50%;top:50%;z-index:2;display:grid;place-items:center;width:48px;height:48px;background:var(--straw);color:var(--gun);font-size:1.5rem;transform:translate(-50%,-50%)}
.proof-decision .statement{min-height:310px;padding:clamp(34px,4vw,60px)}
.proof-decision .statement-light{background:var(--gains-hi);border-top:0}
.proof-decision .statement h4{max-width:22ch;margin:26px 0 20px;font-size:clamp(2rem,2.8vw,3rem);font-weight:200;line-height:1.07;letter-spacing:-.025em}
.continuity{padding:clamp(34px,4vw,60px);background:var(--char);color:#fff;border-left:4px solid var(--auburn)}
.continuity h4{max-width:1100px;margin:0 0 clamp(30px,4vw,54px);font-size:clamp(2rem,3vw,3.2rem);font-weight:200;letter-spacing:-.032em;line-height:1.05;text-wrap:balance}
.continuity-parts h5{color:#fff}
.final-principle{padding:clamp(28px,3vw,42px);background:var(--gains-hi);border-left:3px solid var(--auburn)}
.final-principle h4{margin:0 0 12px;font-size:clamp(1.45rem,2.1vw,2.2rem);font-weight:300;letter-spacing:-.02em;line-height:1.2}
.final-principle p{margin:0;color:var(--muted);font-size:1.02rem;font-weight:300}

.site-footer{background:var(--gun);color:#fff;padding:clamp(76px,8vw,116px) 0}
.footer-row{display:flex;justify-content:space-between;align-items:center;gap:clamp(36px,5vw,80px)}
.site-footer .eyebrow{color:var(--straw)}
.site-footer h2{margin:12px 0 16px;font-size:clamp(2.2rem,3.9vw,4.1rem);font-weight:200;letter-spacing:-.035em;line-height:1.03}
.site-footer p{margin:0;color:var(--dark-muted);font-size:1.08rem;font-weight:300}
.footer-actions{display:flex;flex-direction:column;align-items:flex-start;gap:12px;min-width:max-content}
.button{min-height:56px;padding:0 30px}
.pdf-link{color:var(--dark-text);font-size:.95rem;text-underline-offset:.25em}
.pdf-link:hover{color:var(--straw)}

@media(max-width:1100px){
  .system-hero-grid{grid-template-columns:minmax(0,1fr) minmax(310px,.85fr);gap:40px}
  .system-hero-copy h1{font-size:clamp(3rem,5vw,4.5rem)}
  .main-nav{gap:18px}
  .header-cta{padding-inline:15px}
  .deliverables{gap:30px}
}
@media(max-width:900px){
  :root{--nav-height:118px}
  .header-row{display:grid;grid-template-columns:1fr auto;gap:0;min-height:0;padding-top:10px}
  .main-nav{grid-column:1/-1;grid-row:2;display:flex;justify-content:space-between;gap:12px;margin:0;min-height:54px}
  .main-nav a{padding:12px 0}
  .header-cta{grid-column:2;grid-row:1}
  .system-hero-grid{grid-template-columns:1fr;gap:58px}
  .system-hero-map{padding-left:28px}
  .system-hero-map .flow{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 24px}
  .chapter-head{padding-block:72px}
  .chapter-body{padding-block:76px}
  .flow-four{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 0}
  .flow-four .flow-item:nth-child(3){padding-left:0;border-left:0}
  .flow-four .flow-item:nth-child(2)::after{display:none}
  .review-flow .flow-item:nth-child(3){padding-left:24px;border-left:1px solid var(--line-light)}
  .deliverables{grid-template-columns:1fr}
  .blueprint{min-height:0}
  .support dl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 24px}
  .footer-row{align-items:flex-start}
}
@media(max-width:700px){
  :root{--nav-height:110px;--gutter:20px}
  .header-row{gap:0 10px}
  .brand img{width:106px}
  .header-cta{min-height:44px;padding:10px 13px;font-size:.78rem}
  .main-nav{min-height:54px;gap:6px}
  .main-nav a{font-size:.77rem}
  .main-nav span{display:none}
  .chapter h1,.chapter-title,.system-hero-copy h1{font-size:clamp(2.65rem,9vw,3.9rem);line-height:1}
  .chapter-head,#sistema .chapter-head{padding-block:clamp(56px,10vw,76px)}
  .chapter-lead{font-size:1.08rem}
  .chapter-body{padding-block:clamp(64px,11vw,82px)}
  .system-hero-grid{gap:50px}
  .system-hero-map{padding-left:0;border-left:0}
  .system-hero-map .section-heading{margin-bottom:20px}
  .system-hero-map .section-heading h2{font-size:1.22rem}
  .system-hero-map .flow{display:block}
  .system-hero-map .flow-item{padding-block:13px}
  .system-hero-map .section-heading{display:grid;grid-template-columns:30px minmax(0,1fr);gap:12px;align-items:start}
  .system-hero-map .section-heading h2{font-size:1.15rem;line-height:1.25}
  .section-heading{gap:16px;margin:70px 0 28px}
  .section-heading h2,.section-heading h3{font-size:clamp(1.9rem,7vw,2.5rem)}
  .flow-four,.flow-three,.gate-flow,.branch-options,.duo,.review-decisions,.outcomes,.proof-decision{grid-template-columns:1fr}
  .flow-four{gap:0}
  .flow-item,.flow-item:not(:first-child),.flow-four .flow-item:nth-child(3){padding:21px 0 24px;border:0;border-top:1px solid var(--line-light)}
  .flow-item:first-child{border-top:2px solid var(--auburn)}
  .flow-item::after,.flow-four .flow-item:nth-child(2)::after{content:"↓";right:10px;top:auto;bottom:3px;display:block}
  .system-hero-map .flow-four .flow-item::after{display:none}
  .flow-item:last-child::after{display:none}
  .step-no{margin:0 0 8px}
  .flow-item h3,.flow-item h4{margin-bottom:6px}
  .branch{padding:26px 20px}
  .branch-root{margin-bottom:28px}
  .branch-root::after,.branch .branch-options::before,.branch .decision::before{display:none}
  .branch-options{gap:12px}
  .decision{padding:22px}
  .decision:hover{transform:none}
  .gate-flow{padding:26px}
  .gate,.gate:first-child,.gate:last-child{padding:18px 0;border:0;border-top:1px solid var(--line-dark)}
  .gate:first-child{padding-top:0;border-top:0}
  .gate:not(:last-child)::after{content:"↓";right:4px;top:auto;bottom:-10px}
  .gate h3{margin:9px 0 5px}
  .statement{padding:28px}
  .review-entry{grid-template-columns:1fr}
  .review-flow .flow-item,.review-flow .flow-item:first-child,.review-flow .flow-item:nth-child(3){min-height:0;padding:18px 0;border:0;border-top:1px solid var(--line-light)}
  .review-flow .flow-item::after{display:none}
  .review-flow .step-no{margin:0 0 6px;font-size:1.8rem}
  .review-decisions{padding:18px 24px;gap:0}
  .review-decisions .decision{padding:16px 0 16px 18px}
  .blueprint{padding:30px}
  .blueprint h4{margin:30px 0 18px;font-size:2.65rem}
  .support dl{grid-template-columns:1fr}
  #value-build .flow-three .flow-item{min-height:0}
  .prove-flow{padding:18px 24px}
  .prove-flow .flow-item{min-height:0}
  .intervention,.continuity{padding:30px 26px}
  .intervention h4{font-size:2.1rem}
  .intervention-parts,.continuity-parts{grid-template-columns:1fr}
  .intervention-parts>div,.continuity-parts>div,.intervention-parts>div:first-child,.continuity-parts>div:first-child{padding:17px 0}
  .proof-decision::after{content:"↓";top:50%}
  .proof-decision .statement{min-height:0;padding:32px}
  .proof-decision .statement h4{font-size:2.15rem}
  .continuity h4{font-size:2.15rem}
  .chapter-next{margin-top:70px}
  .footer-row{display:block}
  .footer-actions{margin-top:30px;min-width:0}
  .site-footer{padding-block:76px}
}
@media(max-width:360px){
  :root{--nav-height:150px}
  .brand img{width:98px}
  .header-cta{padding:10px 9px;font-size:.73rem}
  .main-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;min-height:0;padding:7px 0}
  .main-nav a{justify-content:center;padding:5px 0;font-size:.79rem}
  .chapter h1,.chapter-title,.system-hero-copy h1{font-size:2.5rem}
  .chapter-meta{font-size:.78rem}
  .chapter-meta a{font-size:.72rem}
  .section-heading h2,.section-heading h3{font-size:1.8rem}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
}

/* The downloadable guide is printed from this same HTML and design system. */
@page{size:A4;margin:0}
@media print{
  html{scroll-behavior:auto}
  body{-webkit-print-color-adjust:exact;print-color-adjust:exact}
  .site-header{position:relative;backdrop-filter:none;-webkit-backdrop-filter:none}
  .skip-link,.chapter-meta a,.chapter-next,.pdf-link[download]{display:none!important}
  .chapter-head{break-inside:avoid}
  .section-heading{break-inside:avoid;break-after:avoid}
  .branch,.gate-flow,.review-decisions,.intervention,.prove-flow,.proof-decision,.continuity,.final-principle{break-inside:avoid}
  .blueprint,.support{break-inside:avoid}
  .decision,.outline,.statement,.flow-item,.gate,.support dl>div{break-inside:avoid}
  .chapter-head,#sistema .chapter-head{padding-block:42px}
  .chapter-body{padding-block:34px}
  .section-heading{margin-top:42px;margin-bottom:22px}
  .site-footer{break-before:page;break-inside:avoid;display:flex;align-items:center;min-height:297mm;padding-block:52px}
}

/* v1.3 narrative layer: subordinate to the existing decision diagrams. */
.chapter-context{max-width:67ch;margin:clamp(20px,2.2vw,30px) 0 0;color:var(--dark-text);font-size:1.04rem;font-weight:300;line-height:1.6}
#value-review .chapter-context,#value-partnership .chapter-context{color:var(--muted)}
.system-hero-copy .chapter-context{max-width:58ch;color:var(--dark-muted)}
.section-intro{max-width:73ch;margin:-12px 0 clamp(28px,3vw,40px);color:var(--muted);font-size:1.06rem;font-weight:300;line-height:1.62}
.system-hero-map .section-intro{max-width:48ch;margin:0 0 22px;color:var(--dark-muted);font-size:.96rem;line-height:1.52}
.bridge{max-width:77ch;margin:clamp(34px,4vw,56px) 0 0;padding-left:clamp(18px,2vw,28px);border-left:2px solid var(--auburn);color:var(--ink);font-size:clamp(1.08rem,1.3vw,1.3rem);font-weight:300;line-height:1.55}
.blueprint .blueprint-context{max-width:43ch;margin:-18px 0 28px;color:var(--dark-muted);font-size:1.02rem;line-height:1.58}
.site-footer .cta-context{max-width:63ch;margin-top:16px;font-size:1rem;line-height:1.58}
@media(max-width:700px){
  .chapter-context{font-size:1rem;line-height:1.58}
  .section-intro{margin-top:-10px;font-size:1rem}
  .system-hero-map .section-intro{font-size:1rem}
  .bridge{margin-top:32px;font-size:1.08rem}
  .blueprint .blueprint-context{margin:-10px 0 24px;font-size:1rem}
}