/* =====================================================================
   Proposta v4 (local, ramo proposta-v4). Carrega por cima do v3.css, que
   dá o carvão, o cabeçalho escuro e os tokens dos botões.
   A página conta a assinatura da marca em três capítulos: Think, Make,
   Impact. Contrato de direção em .impeccable/surfaces/site-index-njk.md.
   Movimento: só CSS e IntersectionObserver, sem bibliotecas. Conteúdo
   visível por defeito; "reduzir movimento" tira tudo o que desliza.
   ===================================================================== */

body.v4{
  --v4-ease:cubic-bezier(.23,1,.32,1);      /* entradas: arranque imediato */
  --v4-ease-io:cubic-bezier(.77,0,.175,1);  /* movimento no ecrã */
  --v4-word:clamp(64px,8.2vw,124px);
}

/* Superfícies do browser também são design */
body.v4 ::selection{background:var(--camel);color:#181818}
body.v4{caret-color:var(--camel);accent-color:var(--camel)}
body.v4 :focus-visible{outline:2px solid var(--camel);outline-offset:3px;border-radius:6px}
:root:has(body.v4){scrollbar-color:#3a3936 #181818;scrollbar-width:thin}
body.v4 a{text-underline-offset:.22em}
/* No carvão, a sombra verde do WhatsApp virava um halo; passa a sombra neutra */
body.v4 .wa-float{box-shadow:0 12px 26px rgba(0,0,0,.5)}
body.v4 .wa-float:hover{box-shadow:0 16px 32px rgba(0,0,0,.55)}

/* ---------------------------------------------------------------------
   1. PRIMEIRO ECRÃ: o título é a tese, em duas linhas largas
   --------------------------------------------------------------------- */
.v4-hero{padding-top:56px;padding-bottom:88px}
.v4-hero h1{font-size:clamp(40px,5.3vw,80px);font-weight:600;letter-spacing:-.04em;line-height:1.02;margin:0}
.v4-hero h1 span{display:block;padding-bottom:.04em}
.v4-hero h1 em{font-weight:300;color:var(--v3-muted)}
.v4-hero__row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:end;margin-top:22px}
.v4-hero__sub{font-size:clamp(17px,1.5vw,20px);font-weight:300;line-height:1.6;color:var(--v3-muted);max-width:40ch}
.v4-hero__cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.v4-hero__note{margin-top:14px;font-size:14px;color:var(--v3-muted-2)}
.v4-fan{position:relative;height:300px}
.v4-fan figure{position:absolute;bottom:0;margin:0;width:37%;border-radius:12px;overflow:hidden;
  box-shadow:0 26px 60px rgba(0,0,0,.5);transform-origin:50% 100%}
.v4-fan img{display:block;width:100%;height:auto;aspect-ratio:4/5;object-fit:cover}
.v4-fan figure:nth-child(1){left:0;rotate:-6deg}
.v4-fan figure:nth-child(2){left:31.5%;bottom:22px;rotate:0deg;z-index:2}
.v4-fan figure:nth-child(3){right:0;rotate:6deg}

/* A clareza em gesto: o título entra desfocado e fica nítido. Uma vez só. */
@media (prefers-reduced-motion:no-preference){
  .v4-hero h1 span{animation:v4-resolve .9s var(--v4-ease) backwards}
  .v4-hero h1 span + span{animation-delay:.14s}
  .v4-hero__row > div:first-child{animation:v4-rise .7s var(--v4-ease) .38s backwards}
  .v4-fan figure{animation:v4-deal .8s var(--v4-ease) backwards}
  .v4-fan figure:nth-child(1){animation-delay:.46s}
  .v4-fan figure:nth-child(2){animation-delay:.54s}
  .v4-fan figure:nth-child(3){animation-delay:.62s}
}
@media (prefers-reduced-motion:reduce){
  .v4-hero h1 span,.v4-hero__row > div:first-child{animation:v4-fade .3s ease backwards}
}
@keyframes v4-resolve{from{opacity:.35;filter:blur(12px);translate:0 .1em}}
@keyframes v4-rise{from{opacity:0;translate:0 14px}}
@keyframes v4-deal{from{opacity:0;rotate:0deg;translate:0 40px}}
@keyframes v4-fade{from{opacity:0}}

/* ---------------------------------------------------------------------
   2. SETORES: a prova de alcance, em tipografia
   --------------------------------------------------------------------- */
.v4-sectors{padding-top:28px;padding-bottom:96px;border-top:1px solid var(--v3-line)}
.v4-sectors__lead{font-size:clamp(22px,2.2vw,30px);font-weight:300;letter-spacing:-.02em;line-height:1.25;max-width:26ch;margin-top:38px}
.v4-sectors__lead b{font-weight:600}
.v4-sectors ul{list-style:none;margin:40px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,1fr)}
.v4-sectors li + li{border-left:1px solid var(--v3-line)}
.v4-sectors ul a{display:block;padding:6px 26px 8px;color:var(--v3-text)}
.v4-sectors li:first-child a{padding-left:0}
.v4-sectors b{position:relative;display:inline-block;font-size:clamp(24px,2.5vw,36px);font-weight:600;letter-spacing:-.025em}
.v4-sectors b::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:1.5px;background:var(--camel);
  scale:0 1;transform-origin:left;transition:scale .28s var(--v4-ease)}
.v4-sectors span{display:block;margin-top:12px;font-size:14px;color:var(--v3-muted-2)}
@media (hover:hover) and (pointer:fine){.v4-sectors ul a:hover b::after{scale:1 1}}
.v4-sectors ul a:focus-visible b::after{scale:1 1}
.v4-sectors__clinic{margin-top:34px;font-size:15px;color:var(--v3-muted)}
.v4-sectors__clinic a{color:var(--v3-text);border-bottom:1px solid var(--camel);padding-bottom:2px}

/* ---------------------------------------------------------------------
   3. CAPÍTULOS: a palavra fica presa, a prova passa
   --------------------------------------------------------------------- */
.v4-ch{position:relative;display:grid;grid-template-columns:.78fr 1.22fr;gap:56px;
  padding-top:112px;padding-bottom:112px;border-top:1px solid var(--v3-line);view-timeline-name:--ch}
.v4-ch__rail{position:sticky;top:108px;align-self:start}
.v4-ch__word{display:flex;align-items:baseline;font-size:var(--v4-word);font-weight:600;letter-spacing:-.045em;line-height:.9}
.v4-ch__dot{display:inline-block;width:.2em;height:.2em;margin-left:.05em;border-radius:50%;background:var(--camel)}
.v4-ch__gloss{margin-top:22px;font-size:16px;font-weight:300;color:var(--v3-muted);max-width:24ch;line-height:1.5}
/* Com suporte, o ponto enche e o fio desce conforme o capítulo passa. */
@supports (animation-timeline: view()){
  @media (prefers-reduced-motion:no-preference){
    .v4-ch__dot{animation:v4-dot linear both;animation-timeline:--ch;animation-range:cover 12% cover 46%}
      }
}
@keyframes v4-dot{from{scale:.25;opacity:.35}to{scale:1;opacity:1}}

.v4-ch__body{min-width:0}
.v4-ch__body > h2{font-size:clamp(30px,3.3vw,48px);font-weight:600;letter-spacing:-.03em;line-height:1.08;text-wrap:balance;max-width:20ch}
.v4-ch__body > h2 em{font-weight:300;color:var(--v3-muted)}
.v4-ch__body > p{margin-top:18px;font-size:clamp(16.5px,1.4vw,19px);font-weight:300;line-height:1.6;color:var(--v3-muted);max-width:52ch}

/* Bloco de serviço: título, frase, entregas, prazo */
.v4-svc{margin-top:56px;padding-top:30px;border-top:1px solid var(--v3-line);display:grid;grid-template-columns:1fr 1fr;gap:28px 48px}
.v4-svc h3{font-size:clamp(22px,1.9vw,28px);white-space:nowrap;font-weight:600;letter-spacing:-.02em}
.v4-svc__lead{margin-top:10px;font-size:17px;font-weight:300;line-height:1.55;color:var(--v3-muted)}
.v4-svc ul{list-style:none;display:grid;gap:12px;font-size:15.5px;align-self:start}
.v4-svc li{position:relative;padding-left:22px}
.v4-svc li::before{content:"";position:absolute;left:0;top:.66em;width:10px;height:1.5px;background:var(--camel)}
.v4-svc__foot{grid-column:1 / -1;display:flex;gap:28px;align-items:baseline;flex-wrap:wrap;font-size:14px;color:var(--v3-muted-2)}

/* Raio-X: a primeira coisa que se faz no Think */
.v4-xray{margin-top:72px;background:var(--v3-bg-2);border:1px solid var(--v3-line);border-radius:20px;padding:44px}
.v4-xray h3{font-size:clamp(26px,2.6vw,36px);font-weight:600;letter-spacing:-.025em}
.v4-xray h3 em{font-weight:300;color:var(--v3-muted)}
.v4-xray > p{margin-top:14px;font-size:17px;font-weight:300;line-height:1.6;color:var(--v3-muted);max-width:50ch}
.v4-xray ul{list-style:none;margin:30px 0 0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.v4-xray li{padding:22px 22px 0 0}
.v4-xray li + li{padding-left:22px;border-left:1px solid var(--v3-line)}
.v4-xray li b{display:block;font-size:17px;font-weight:600;margin-bottom:8px}
.v4-xray li span{font-size:15px;font-weight:300;line-height:1.55;color:var(--v3-muted)}
.v4-xray__act{margin-top:34px;display:flex;gap:22px;align-items:center;flex-wrap:wrap}
.v4-xray__act small{font-size:14px;color:var(--v3-muted-2);max-width:44ch;line-height:1.5}

/* Casos: duas colunas desencontradas, a imagem revela-se de baixo */
.v4-cases{margin-top:52px;display:grid;grid-template-columns:1fr 1fr;gap:56px 28px}
.v4-cases a{display:block;color:inherit}
.v4-cases a:nth-child(even){margin-top:96px}
.v4-case__img{border-radius:14px;overflow:hidden;background:var(--v3-bg-2)}
.v4-case__img img{display:block;width:100%;height:auto;aspect-ratio:4/5;object-fit:cover;transition:scale .7s var(--v4-ease)}
.v4-case__meta{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-top:16px}
.v4-case__meta b{font-size:19px;font-weight:600;letter-spacing:-.01em}
.v4-case__meta i{font-style:normal;font-size:13px;letter-spacing:.04em;color:var(--v3-muted-2)}
.v4-cases p{margin-top:8px;font-size:15px;font-weight:300;line-height:1.55;color:var(--v3-muted);max-width:38ch}
@media (hover:hover) and (pointer:fine){
  .v4-cases a:hover .v4-case__img img{scale:1.04}
  .v4-cases a:hover .v4-arrow{opacity:1;translate:0 0}
}
.v4-more{margin-top:48px}

/* Revelação por recorte: só existe se o script confirmar que corre */
@media (prefers-reduced-motion:no-preference){
  .v4-motion [data-reveal]{clip-path:inset(0 0 100% 0 round 14px);transition:clip-path 1s var(--v4-ease-io) var(--d,0s)}
  .v4-motion [data-reveal].is-in{clip-path:inset(0 0 0 0 round 14px)}
  .v4-motion [data-reveal] img{scale:1.12;transition:scale 1.3s var(--v4-ease) var(--d,0s)}
  .v4-motion [data-reveal].is-in img{scale:1}
}

/* Impact: relatório, ferramentas */
.v4-report{margin-top:48px;display:grid;grid-template-columns:auto 1fr;gap:28px;align-items:center;
  background:var(--v3-bg-2);border:1px solid var(--v3-line);border-radius:16px;padding:28px 32px}
.v4-report b{font-size:18px;font-weight:600;white-space:nowrap}
.v4-report p{font-size:16px;font-weight:300;line-height:1.6;color:var(--v3-muted)}
.v4-tools{margin-top:72px}
.v4-tools h3{font-size:clamp(24px,2.4vw,34px);font-weight:600;letter-spacing:-.025em;max-width:22ch;line-height:1.12}
.v4-tools h3 em{font-weight:300;color:var(--v3-muted)}
.v4-tools > p{margin-top:12px;font-size:16.5px;font-weight:300;color:var(--v3-muted);max-width:50ch;line-height:1.6}
.v4-tools dl{margin:28px 0 0;border-top:1px solid var(--v3-line)}
.v4-tools dl > div{display:grid;grid-template-columns:minmax(0,14rem) minmax(0,1fr);grid-template-areas:"n d" "s d";column-gap:32px;row-gap:8px;align-items:baseline;padding:22px 0;border-bottom:1px solid var(--v3-line)}
.v4-tools dt{grid-area:n;font-size:20px;font-weight:600;letter-spacing:-.015em}
.v4-tools dd{grid-area:d;margin:0;font-size:15.5px;font-weight:300;line-height:1.55;color:var(--v3-muted)}
.v4-tools dd + dd{grid-area:s;text-align:left;font-size:12.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--v3-muted-2);white-space:nowrap}
.v4-tools dd.on{color:var(--camel)}
.v4-ai{margin-top:26px;font-size:15px;line-height:1.6;color:var(--v3-muted-2);max-width:62ch}

/* ---------------------------------------------------------------------
   4. FUNDADOR, REGRA DA CASA, PERGUNTAS, CONTACTO
   --------------------------------------------------------------------- */
.v4-founder{display:grid;grid-template-columns:.62fr 1.38fr;gap:72px;align-items:center;padding-top:112px;padding-bottom:112px;border-top:1px solid var(--v3-line)}
.v4-founder figure{margin:0;border-radius:16px;overflow:hidden}
.v4-founder img{display:block;width:100%;height:auto;aspect-ratio:4/5;object-fit:cover;filter:grayscale(1) contrast(1.05)}
.v4-founder blockquote{margin:0;font-size:clamp(30px,3.5vw,52px);font-weight:300;letter-spacing:-.03em;line-height:1.12;max-width:20ch}
.v4-founder blockquote b{font-weight:600}
.v4-founder p{margin-top:24px;font-size:17px;font-weight:300;line-height:1.65;color:var(--v3-muted);max-width:52ch}
.v4-founder .who{margin-top:22px;font-size:15px;color:var(--v3-text)}
.v4-founder .who span{color:var(--v3-muted-2);margin-left:8px}

.v4-rule{position:relative;overflow:hidden;border-radius:22px;background:var(--v3-bg-2);border:1px solid var(--v3-line);
  padding:104px 40px;text-align:center}
.v4-rule > *:not(.fluid){position:relative;z-index:1}
.v4-rule h2{font-size:clamp(32px,4vw,58px);font-weight:600;letter-spacing:-.035em;line-height:1.05;max-width:17ch;margin:0 auto;text-wrap:balance}
.v4-rule h2 em{font-weight:300;color:var(--v3-muted)}
.v4-rule p{margin:22px auto 0;max-width:50ch;font-size:17px;font-weight:300;line-height:1.6;color:var(--v3-muted)}
.v4-rule .fluid{left:-260px;bottom:-560px;right:auto;top:auto;--fluid-stroke:rgba(193,157,134,.28)}

.v4-faq{display:grid;grid-template-columns:.75fr 1.25fr;gap:64px;padding-top:112px;padding-bottom:112px}
.v4-faq h2{font-size:clamp(30px,3.3vw,48px);font-weight:600;letter-spacing:-.03em;line-height:1.08}
.v4-faq h2 em{font-weight:300;color:var(--v3-muted)}
.v4-faq details{border-bottom:1px solid var(--v3-line);interpolate-size:allow-keywords}
.v4-faq details:first-child{border-top:1px solid var(--v3-line)}
.v4-faq summary{list-style:none;cursor:pointer;padding:22px 0;font-size:17.5px;font-weight:500;display:flex;justify-content:space-between;align-items:center;gap:18px}
.v4-faq summary::-webkit-details-marker{display:none}
.v4-faq details::details-content{height:0;overflow:clip;transition:height .32s var(--v4-ease),content-visibility .32s allow-discrete}
.v4-faq details[open]::details-content{height:auto}
.v4-faq details p{padding:0 0 22px;font-size:15.5px;font-weight:300;line-height:1.65;color:var(--v3-muted);max-width:60ch}
@media (prefers-reduced-motion:reduce){.v4-faq details::details-content,.v4-plus{transition:none}}

.v4-contact{display:grid;grid-template-columns:.9fr 1.1fr;gap:72px;background:var(--v3-bg-2);border:1px solid var(--v3-line);border-radius:22px;padding:64px;margin-bottom:112px}
.v4-contact h2{font-size:clamp(32px,3.6vw,52px);font-weight:600;letter-spacing:-.035em;line-height:1.05}
.v4-contact h2 em{font-weight:300;color:var(--v3-muted)}
.v4-contact > div > p{margin:18px 0 30px;font-size:17px;font-weight:300;line-height:1.6;color:var(--v3-muted);max-width:40ch}
.v4-contact .alt{margin-top:22px;font-size:15px;color:var(--v3-muted)}
.v4-contact .alt a{color:var(--v3-text);white-space:nowrap}
.v4-xray h3 em,.v4-contact h2 em{white-space:nowrap}

/* ---------------------------------------------------------------------
   TELEMÓVEL: cada bloco diz como encolhe
   --------------------------------------------------------------------- */
@media (max-width:1100px) and (min-width:901px){
  .v4-ch{grid-template-columns:.6fr 1.4fr;gap:40px}
  body.v4{--v4-word:clamp(56px,7vw,88px)}
}
@media (max-width:900px){
  .v4-hero{padding-top:32px;padding-bottom:56px}
  .v4-hero h1{font-size:clamp(36px,10vw,48px)}
  .v4-hero__row{grid-template-columns:1fr;gap:34px;margin-top:22px}
  .v4-hero__cta .btn{flex:1 1 100%;justify-content:center}
  .v4-fan{height:auto;display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
  .v4-fan figure{position:static;width:auto;rotate:0deg!important;box-shadow:0 14px 30px rgba(0,0,0,.4)}
    .v4-sectors{padding-bottom:64px}
  .v4-sectors ul{grid-template-columns:1fr 1fr;row-gap:26px}
  .v4-sectors li + li{border-left:0}
  .v4-sectors li:nth-child(even){border-left:1px solid var(--v3-line)}
  .v4-sectors li:nth-child(odd) a{padding-left:0}
  .v4-ch{grid-template-columns:1fr;gap:26px;padding-top:72px;padding-bottom:72px}
  .v4-ch__rail{position:static}
    body.v4{--v4-word:clamp(58px,17vw,84px)}
  .v4-svc{grid-template-columns:1fr;margin-top:40px}
  .v4-xray{padding:28px 22px;margin-top:48px}
  .v4-xray ul{grid-template-columns:1fr}
  .v4-xray li,.v4-xray li + li{padding:18px 0;border-left:0;border-top:1px solid var(--v3-line)}
  .v4-xray__act .btn{width:100%;justify-content:center}
  .v4-cases{display:flex;gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;margin:40px calc(var(--pad) * -1) 0;
    padding:0 var(--pad) 8px;scroll-padding:0 var(--pad)}
  .v4-cases a{flex:0 0 80%;scroll-snap-align:start}
  .v4-cases a:nth-child(even){margin-top:0}
  .v4-report{grid-template-columns:1fr;gap:8px;padding:22px}
  .v4-report b{white-space:normal}
  .v4-tools dl > div{grid-template-columns:1fr;grid-template-areas:"n" "d" "s";gap:6px}
  .v4-tools dd + dd{text-align:left}
  .v4-svc h3{white-space:normal}
  .v4-founder{grid-template-columns:1fr;gap:32px;padding-top:72px;padding-bottom:72px}
  .v4-founder figure{max-width:260px}
  .v4-rule{padding:64px 22px}
  .v4-faq{grid-template-columns:1fr;gap:26px;padding-top:72px;padding-bottom:72px}
  .v4-contact{grid-template-columns:1fr;gap:34px;padding:34px 22px;margin-bottom:72px}
}

/* ---------------------------------------------------------------------
   Correções da revisão final
   --------------------------------------------------------------------- */
/* O fio da marca: um só traço a atravessar Think, Make e Impact */
.v4-story{position:relative;view-timeline-name:--story}
.v4-story__track{position:absolute;inset:0;pointer-events:none;z-index:0}
.v4-story .v4-ch{z-index:1}
/* O fio vive no corredor entre a palavra e a prova: como a palavra fica presa
   ao ecrã, qualquer fio dentro da coluna dela acabava por lhe passar por cima. */
.v4-story{--g:clamp(72px,8.5vw,132px);--rf:.39}
.v4-story .v4-ch{column-gap:var(--g)}
.v4-thread{position:absolute;top:120px;height:calc(100% - 240px);overflow:visible;
  left:calc(var(--pad) + (100% - 2 * var(--pad) - var(--g)) * var(--rf) + var(--g) * .14);width:calc(var(--g) * .72)}
.v4-thread path{fill:none;stroke:var(--camel);stroke-opacity:.55;stroke-width:1.6;stroke-linecap:round}
@supports (animation-timeline: view()){
  @media (prefers-reduced-motion:no-preference){
    .v4-thread path{stroke-dasharray:1;stroke-dashoffset:1;animation:v4-draw linear both;animation-timeline:--story;animation-range:cover 8% cover 88%}
  }
}
@supports not (animation-timeline: view()){
  @media (prefers-reduced-motion:no-preference){
    .v4-motion .v4-thread path{stroke-dasharray:1;stroke-dashoffset:1;transition:stroke-dashoffset 2.8s var(--v4-ease)}
    .v4-motion .v4-thread.is-in path{stroke-dashoffset:0}
  }
}
@keyframes v4-draw{to{stroke-dashoffset:0}}
.v4-ch__word,.v4-ch__gloss{position:relative}

/* Ícones desenhados, um traço só */
.v4-arrow,.v4-plus{fill:none;stroke:var(--camel);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.v4-arrow{display:inline-block;width:15px;height:15px;margin-left:8px;vertical-align:-1px;opacity:0;translate:-6px 0;
  transition:opacity .2s var(--v4-ease),translate .28s var(--v4-ease)}
.v4-plus{width:18px;height:18px;flex:none;transition:rotate .22s var(--v4-ease)}
.v4-faq details[open] .v4-plus{rotate:45deg}

/* Caixa de consentimento no tema */
body.v4 .consent input{appearance:none;-webkit-appearance:none;width:20px;height:20px;margin:0;border:1.5px solid #5a5855;border-radius:5px;
  background:#141414 center/13px no-repeat;transition:background-color .15s ease,border-color .15s ease}
body.v4 .consent input:checked{background-color:var(--camel);border-color:var(--camel);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3 8.5l3.2 3L13 4.5' fill='none' stroke='%23181818' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E")}

@media (max-width:1100px) and (min-width:901px){.v4-story{--rf:.3}}
/* No telemóvel o fio sai: numa margem de 3px lia-se como defeito de borda.
   A assinatura aí fica no ponto que enche em cada palavra. */
@media (max-width:900px){
  .v4-story__track{display:none}
  .v4-ch__gloss{display:none}
}