/* ==========================================================================
   Nossa História em Códigos — Landing Page dos 20 anos da COTI Informática
   Estilos globais. Tokens em :root; seções na ordem em que aparecem na página.
   ========================================================================== */

:root {
  /* Cores — derivadas da capa e do logotipo */
  --navy-950: #021120;
  --navy-900: #06182b;
  --navy-800: #0b2440;
  --blue-coti: #004589;
  --blue-bright: #2f7bc8;
  --petrol: #173248;
  --steel: #51738e;
  --sky: #6a8da9;
  --sky-200: #9cc3e6;
  --gray-200: #dee3e7;
  --paper: #f4f7f9;
  --white: #ffffff;
  --ink: #1b1918;
  --ink-soft: #3d4a57;
  --muted: #5b6b7a;
  --wa: #25d366;
  --wa-hover: #3ae07a;

  --line-light: rgba(2, 17, 32, .12);
  --line-dark: rgba(156, 195, 230, .16);

  /* Tipografia */
  --font-display: "Barlow Condensed", "Arial Narrow", Arial, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-serif: "Playfair Display", Georgia, "Times New Roman", serif;

  --fs-xs: .8125rem;
  --fs-sm: .9375rem;
  --fs-base: 1.0625rem;
  --fs-lg: clamp(1.125rem, 1.02rem + .45vw, 1.3125rem);
  --fs-h3: clamp(1.35rem, 1.2rem + .6vw, 1.7rem);
  --fs-h2: clamp(2.1rem, 1.5rem + 2.6vw, 3.6rem);
  --fs-h1: clamp(3rem, 1.9rem + 5vw, 6.2rem);

  /* Espaçamento */
  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --section-y: clamp(4.5rem, 3rem + 6vw, 8.5rem);

  /* Containers */
  --container: 1200px;
  --container-narrow: 820px;
  --gutter: clamp(1rem, .5rem + 2.5vw, 2.5rem);

  /* Raios e sombras */
  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 2px rgba(2, 17, 32, .06), 0 2px 8px rgba(2, 17, 32, .05);
  --shadow: 0 10px 30px -12px rgba(2, 17, 32, .25);
  --shadow-lg: 0 40px 80px -30px rgba(0, 0, 0, .65);

  --ease: cubic-bezier(.2, .7, .2, 1);
  --header-h: 72px;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3 { margin: 0; line-height: 1.05; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; }
[role="list"] { list-style: none; }
figure { margin: 0; }
blockquote { margin: 0; }
button { font: inherit; color: inherit; }

:focus-visible { outline: 3px solid var(--sky-200); outline-offset: 3px; border-radius: 4px; }
.section--light :focus-visible, .section--paper :focus-visible { outline-color: var(--blue-coti); }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 1rem; top: -100px; z-index: 200;
  background: var(--white); color: var(--navy-950); padding: .75rem 1rem; border-radius: var(--radius-sm);
  font-weight: 600; text-decoration: none;
}
.skip-link:focus { top: 1rem; }

.container { width: 100%; max-width: calc(var(--container) + var(--gutter) * 2); margin-inline: auto; padding-inline: var(--gutter); }

.icon { width: 1.25em; height: 1.25em; flex: none; }

/* ---------- Tipografia utilitária ---------- */
.eyebrow {
  font-family: var(--font-display); font-weight: 600; font-size: .95rem;
  letter-spacing: .22em; text-transform: uppercase; color: var(--blue-coti);
  display: inline-flex; align-items: center; gap: .75rem; margin-bottom: var(--space-4);
}
.eyebrow::before { content: ""; width: 28px; height: 1px; background: currentColor; opacity: .7; }
.eyebrow--light { color: var(--sky-200); }

.section-title {
  font-family: var(--font-display); font-weight: 700; font-size: var(--fs-h2);
  letter-spacing: -.005em; color: var(--navy-950); max-width: 24ch; text-wrap: balance;
}
.section-title--light { color: var(--white); }
.section-title span { color: var(--steel); }
.section-title--light span { color: var(--sky-200); }
.section-head { margin-bottom: clamp(2.5rem, 2rem + 2vw, 4rem); }
.section-lead { margin-top: var(--space-4); font-size: var(--fs-lg); color: var(--muted); max-width: 52ch; }
.section-lead--light { color: #b7c8d8; }

.prose p + p { margin-top: 1.1em; }
.prose { color: var(--ink-soft); max-width: 62ch; }

/* ---------- Botões ---------- */
.btn {
  --btn-pad-y: .85rem; --btn-pad-x: 1.35rem;
  display: inline-flex; align-items: center; justify-content: center; gap: .6rem;
  min-height: 48px; padding: var(--btn-pad-y) var(--btn-pad-x);
  border-radius: var(--radius-pill); border: 1px solid transparent;
  font-family: var(--font-body); font-weight: 600; font-size: 1rem; line-height: 1.1;
  text-decoration: none; cursor: pointer; white-space: nowrap;
  transition: transform .25s var(--ease), background-color .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
/* Texto escuro sobre o verde do WhatsApp garante contraste AA */
.btn--wa { background: var(--wa); color: var(--navy-950); box-shadow: 0 8px 24px -10px rgba(37, 211, 102, .6); }
.btn--wa:hover { background: var(--wa-hover); box-shadow: 0 14px 30px -12px rgba(37, 211, 102, .75); }
.btn--ghost { background: transparent; color: var(--white); border-color: rgba(255, 255, 255, .35); }
.btn--ghost:hover { border-color: var(--white); background: rgba(255, 255, 255, .06); }
.btn--sm { --btn-pad-y: .6rem; --btn-pad-x: 1rem; min-height: 44px; font-size: .9375rem; }
.btn--lg { --btn-pad-y: 1rem; --btn-pad-x: 1.6rem; font-size: 1.0625rem; }
.btn--xl { --btn-pad-y: 1.15rem; --btn-pad-x: 2rem; font-size: 1.125rem; }

/* ---------- Circuitos (decorativo) ---------- */
.circuit {
  position: absolute; inset: 0; pointer-events: none;
  background: url("../img/circuito.svg") center bottom / cover no-repeat;
  opacity: .9;
  -webkit-mask-image: linear-gradient(to top, #000 0%, rgba(0,0,0,.6) 45%, transparent 85%);
          mask-image: linear-gradient(to top, #000 0%, rgba(0,0,0,.6) 45%, transparent 85%);
  animation: circuit-breathe 16s ease-in-out infinite alternate;
}
.circuit--soft { opacity: .45; }
@keyframes circuit-breathe { from { transform: translateY(0); filter: brightness(1); } to { transform: translateY(-6px); filter: brightness(1.25); } }

.pulse {
  position: absolute; left: var(--x); top: var(--y); width: 6px; height: 6px; border-radius: 50%;
  background: #bfe0ff; box-shadow: 0 0 12px 4px rgba(120, 180, 240, .45);
  opacity: 0; animation: pulse 7s var(--d) ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 0; transform: scale(.6); } 45% { opacity: .9; transform: scale(1); } 60% { opacity: .5; } }

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 100; height: var(--header-h);
  transition: background-color .35s var(--ease), box-shadow .35s var(--ease), backdrop-filter .35s var(--ease);
}
.site-header.is-scrolled {
  background: rgba(2, 17, 32, .9);
  -webkit-backdrop-filter: blur(12px) saturate(140%); backdrop-filter: blur(12px) saturate(140%);
  box-shadow: 0 1px 0 var(--line-dark);
}
.site-header__inner { height: 100%; display: flex; align-items: center; gap: var(--space-5); }
.site-header__logo { display: block; flex: none; border-radius: 4px; }
.site-header__logo img { width: 172px; height: auto; }

.site-nav { margin-left: auto; }
.site-nav__list { list-style: none; display: flex; gap: clamp(.9rem, .3rem + 1.4vw, 2rem); }
.site-nav__list a {
  position: relative; display: inline-block; padding: .5rem 0; text-decoration: none;
  color: #d5e1ec; font-size: .9375rem; font-weight: 500; transition: color .2s;
}
.site-nav__list a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: .2rem; height: 1px; background: var(--sky-200);
  transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease);
}
.site-nav__list a:hover, .site-nav__list a[aria-current="true"] { color: var(--white); }
.site-nav__list a:hover::after, .site-nav__list a[aria-current="true"]::after { transform: scaleX(1); }
.site-nav__cta-mobile { display: none; }

.nav-toggle {
  display: none; width: 48px; height: 48px; margin-left: auto; background: transparent; border: 0; cursor: pointer;
  border-radius: 8px; position: relative;
}
.nav-toggle__bar, .nav-toggle__bar::before, .nav-toggle__bar::after {
  position: absolute; left: 13px; width: 22px; height: 2px; background: var(--white); border-radius: 2px;
  transition: transform .3s var(--ease), opacity .2s;
}
.nav-toggle__bar { top: 23px; }
.nav-toggle__bar::before, .nav-toggle__bar::after { content: ""; left: 0; }
.nav-toggle__bar::before { top: -7px; }
.nav-toggle__bar::after { top: 7px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar::before { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar::after { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
  position: relative; isolation: isolate; overflow: hidden;
  min-height: min(100svh, 980px);
  display: flex; align-items: center;
  padding: calc(var(--header-h) + 3rem) 0 5rem;
  background: var(--navy-950); color: var(--white);
}
.hero__bg { position: absolute; inset: 0; z-index: -1; }
.hero__glow {
  position: absolute; inset: 0;
  background:
    radial-gradient(50% 55% at 74% 46%, rgba(20, 88, 160, .55), transparent 70%),
    radial-gradient(40% 40% at 10% 100%, rgba(23, 50, 72, .9), transparent 70%),
    linear-gradient(180deg, #021120 0%, #04182c 60%, #021120 100%);
}
.hero__twenty {
  position: absolute; right: -4vw; top: 50%; transform: translateY(-50%);
  font-family: var(--font-display); font-weight: 700; line-height: .8; letter-spacing: -.04em;
  font-size: clamp(22rem, 48vw, 52rem);
  color: transparent; -webkit-text-stroke: 1.5px rgba(106, 141, 169, .16);
  user-select: none; will-change: transform;
}
.hero__grid { display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: clamp(2rem, 1rem + 4vw, 5rem); }

.badge {
  display: inline-flex; align-items: center; gap: .7rem; margin-bottom: var(--space-5);
  padding: .45rem .95rem; border: 1px solid rgba(156, 195, 230, .35); border-radius: var(--radius-pill);
  font-family: var(--font-display); font-weight: 600; font-size: .9rem; letter-spacing: .2em; text-transform: uppercase;
  color: var(--sky-200); background: rgba(2, 17, 32, .4);
}
.badge__sep { width: 4px; height: 4px; border-radius: 50%; background: currentColor; }

.hero__title { font-family: var(--font-display); font-weight: 700; font-size: var(--fs-h1); line-height: .95; letter-spacing: -.01em; text-transform: uppercase; }
.hero__title .line { display: block; }
.hero__title .line--accent {
  margin-top: .35em; font-size: .52em; line-height: 1.1; letter-spacing: .01em; color: var(--sky-200);
}
.hero__lead { margin-top: var(--space-5); max-width: 36rem; font-size: var(--fs-lg); line-height: 1.6; color: #c9d6e2; }
.hero__lead em { font-family: var(--font-serif); font-style: italic; color: var(--white); }
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-6); }
.hero__note { display: inline-flex; align-items: center; gap: .5rem; margin-top: var(--space-4); font-size: var(--fs-sm); color: #9fb3c6; }
.hero__note .icon { width: 1.05em; height: 1.05em; color: var(--wa); }
.hero__meta { display: flex; flex-wrap: wrap; gap: var(--space-6); margin: var(--space-7) 0 0; padding-top: var(--space-5); border-top: 1px solid var(--line-dark); max-width: 34rem; }
.hero__meta dt { font-size: .75rem; letter-spacing: .14em; text-transform: uppercase; color: #8da5bb; }
.hero__meta dd { margin: .15rem 0 0; font-family: var(--font-display); font-weight: 600; font-size: 1.3rem; letter-spacing: .02em; }

.hero__book { display: flex; justify-content: center; }
.hero__scroll {
  position: absolute; left: 50%; bottom: 1.5rem; transform: translateX(-50%);
  width: 28px; height: 44px; border: 1.5px solid rgba(255,255,255,.3); border-radius: 16px;
}
.hero__scroll span { position: absolute; left: 50%; top: 9px; width: 3px; height: 8px; margin-left: -1.5px; border-radius: 2px; background: var(--sky-200); animation: scroll-hint 2.4s ease-in-out infinite; }
@keyframes scroll-hint { 0% { opacity: 0; transform: translateY(0); } 40% { opacity: 1; } 80%, 100% { opacity: 0; transform: translateY(12px); } }

/* ---------- Mockup 3D do livro ---------- */
.book {
  --w: clamp(230px, 26vw, 380px);
  --depth: calc(var(--w) * .075);
  position: relative; width: var(--w); perspective: 1800px;
}
.book__inner {
  position: relative; width: 100%; aspect-ratio: 1260 / 1969;
  transform-style: preserve-3d; transform: rotateY(24deg) rotateX(3deg);
  transition: transform .9s var(--ease);
}
.book:hover .book__inner { transform: rotateY(14deg) rotateX(2deg); }
.book__front {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  border-radius: 2px 4px 4px 2px;
  box-shadow: inset 4px 0 8px rgba(0,0,0,.35);
  backface-visibility: hidden;
}
.book__inner::after { /* brilho sutil sobre a capa, sem alterar a arte */
  content: ""; position: absolute; inset: 0; pointer-events: none; border-radius: 2px 4px 4px 2px;
  background: linear-gradient(105deg, rgba(255,255,255,0) 40%, rgba(255,255,255,.10) 52%, rgba(255,255,255,0) 64%),
              linear-gradient(90deg, rgba(0,0,0,.35) 0, rgba(0,0,0,0) 2.5%, rgba(255,255,255,.06) 3.2%, rgba(0,0,0,0) 5%);
  transform: translateZ(.5px);
}
.book__spine {
  position: absolute; top: 0; left: calc(var(--depth) * -1); width: var(--depth); height: 100%;
  background: url("../img/capa-lombada.webp") center / cover no-repeat, #041424;
  transform-origin: right center; transform: rotateY(-90deg);
  filter: brightness(.78);
}
.book__back {
  position: absolute; inset: 0; background: #031221; border-radius: 4px;
  transform: translateZ(calc(var(--depth) * -1));
  box-shadow: var(--shadow-lg);
}
.book__shadow {
  position: absolute; left: 6%; right: -4%; bottom: -34px; height: 36px;
  background: radial-gradient(50% 50% at 50% 50%, rgba(0,0,0,.6), transparent 70%);
  filter: blur(6px);
}
.book[data-float] .book__inner { animation: float 7s ease-in-out infinite; }
.book[data-float] .book__shadow { animation: float-shadow 7s ease-in-out infinite; }
.book[data-float]:hover .book__inner { animation-play-state: paused; }
@keyframes float { 0%, 100% { translate: 0 0; } 50% { translate: 0 -12px; } }
@keyframes float-shadow { 0%, 100% { opacity: 1; scale: 1; } 50% { opacity: .7; scale: .92; } }
.book--small { --w: clamp(200px, 22vw, 300px); }

/* ==========================================================================
   SEÇÕES — fundos
   ========================================================================== */
.section { position: relative; padding-block: var(--section-y); }
.section--paper { background: var(--paper); }
.section--light { background: var(--white); }
.section--dark { background: var(--navy-950); color: var(--white); overflow: hidden; isolation: isolate; }
.section--dark .circuit { z-index: -1; }
.section--blue {
  background: radial-gradient(70% 90% at 80% 0%, #0d3a66 0%, transparent 60%), linear-gradient(180deg, #06223f, #021120);
  color: var(--white);
}

/* ---------- Introdução ---------- */
.intro__title {
  font-family: var(--font-display); font-weight: 700; font-size: clamp(2.2rem, 1.4rem + 3.4vw, 4.4rem);
  line-height: 1.02; color: var(--navy-950); max-width: 22ch; text-wrap: balance;
}
.intro__title span { display: block; margin-top: .35em; font-family: var(--font-serif); font-style: italic; font-weight: 400; font-size: .62em; line-height: 1.25; color: var(--steel); letter-spacing: 0; }
.intro__grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(2rem, 1rem + 5vw, 6rem); margin-top: clamp(2.5rem, 2rem + 3vw, 5rem); align-items: start; }
.intro__body { font-size: var(--fs-lg); }
.dropcap::first-letter {
  float: left; font-family: var(--font-display); font-weight: 700; font-size: 4.4em; line-height: .8;
  padding: .06em .12em 0 0; color: var(--blue-coti);
}
.intro__quote {
  position: relative; padding: var(--space-6) 0 0 var(--space-6); border-left: 2px solid var(--blue-coti);
}
.intro__quote blockquote p { font-family: var(--font-serif); font-style: italic; font-size: clamp(1.35rem, 1.1rem + .9vw, 1.8rem); line-height: 1.4; color: var(--navy-950); }
.intro__quote figcaption, .pull figcaption {
  margin-top: var(--space-4); font-size: var(--fs-xs); letter-spacing: .14em; text-transform: uppercase; color: var(--muted);
}
.intro__quote cite, .manifesto__cite cite { font-style: italic; text-transform: none; letter-spacing: 0; }

/* ---------- Números ---------- */
.numbers__grid { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); margin-top: var(--space-7); border-top: 1px solid var(--line-dark); }
.stat { padding: var(--space-6) var(--space-5) var(--space-5) 0; border-right: 1px solid var(--line-dark); }
.stat + .stat { padding-left: var(--space-5); }
.stat:last-child { border-right: 0; }
.stat__value {
  display: flex; align-items: baseline; font-family: var(--font-display); font-weight: 700;
  font-size: clamp(3.8rem, 2.4rem + 5vw, 7.5rem); line-height: .9; color: var(--white); font-variant-numeric: tabular-nums;
}
.stat__plus { color: var(--sky-200); font-size: .55em; margin-right: .05em; }
.stat__unit { font-size: .38em; margin-left: .15em; color: var(--sky-200); letter-spacing: .02em; }
.stat__label { display: block; margin-top: var(--space-4); font-size: 1.05rem; font-weight: 600; color: #dce7f1; }
.stat__label small { display: block; margin-top: .2rem; font-size: var(--fs-sm); font-weight: 400; color: #93aabf; line-height: 1.45; }
.numbers__source { margin-top: var(--space-6); font-size: var(--fs-xs); color: #8aa1b6; max-width: 70ch; }

/* ---------- Origem ---------- */
.origin__grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: clamp(2rem, 1rem + 5vw, 6rem); align-items: start; }
.origin .prose { margin-top: var(--space-5); font-size: var(--fs-lg); }
.pull { margin-top: var(--space-7); }
.pull blockquote p {
  font-family: var(--font-serif); font-style: italic; font-size: clamp(1.7rem, 1.2rem + 1.8vw, 2.6rem); line-height: 1.2; color: var(--navy-950);
}
.pull blockquote p::before { content: "“"; display: block; font-size: 2.2em; line-height: .6; color: var(--sky); margin-bottom: .1em; }
.pull--compact { margin-top: 0; }
.pull--compact blockquote p { font-size: clamp(1.5rem, 1.1rem + 1.3vw, 2.2rem); }
.origin__facts { display: grid; gap: var(--space-4); position: sticky; top: calc(var(--header-h) + 2rem); }
.fact {
  padding: var(--space-5) var(--space-5) var(--space-5) var(--space-5);
  background: var(--paper); border-radius: var(--radius); border: 1px solid var(--line-light);
  position: relative; overflow: hidden;
}
.fact::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--blue-coti); }
.fact__kicker { display: block; font-size: .75rem; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.fact__big { display: block; margin: .25rem 0 .35rem; font-family: var(--font-display); font-weight: 700; font-size: 2.1rem; line-height: 1; color: var(--navy-950); }
.fact p { font-size: var(--fs-sm); color: var(--ink-soft); line-height: 1.5; }

/* ---------- Timeline ---------- */
.timeline { list-style: none; position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-7) var(--space-5); margin-top: var(--space-7); }
.timeline::before {
  content: ""; position: absolute; left: 0; right: 0; top: 11px; height: 1px;
  background: linear-gradient(90deg, var(--blue-coti), var(--sky) 60%, transparent);
}
.timeline__item { position: relative; padding-top: var(--space-6); }
.timeline__item::before {
  content: ""; position: absolute; left: 0; top: 5px; width: 13px; height: 13px; border-radius: 50%;
  background: var(--paper); border: 2px solid var(--blue-coti);
}
.timeline__item:nth-child(5)::after { /* segunda linha no desktop */
  content: ""; position: absolute; left: 0; right: calc(-300% - var(--space-5) * 3); top: 11px; height: 1px;
  background: linear-gradient(90deg, var(--blue-coti), var(--sky) 70%, transparent); z-index: -1;
}
.timeline__item--now::before { background: var(--blue-coti); box-shadow: 0 0 0 6px rgba(0, 69, 137, .15); }
.timeline__year { display: block; font-family: var(--font-display); font-weight: 700; font-size: 2.2rem; line-height: 1; color: var(--blue-coti); }
.timeline__item h3 { margin-top: .45rem; font-family: var(--font-display); font-weight: 600; font-size: 1.35rem; letter-spacing: .02em; text-transform: uppercase; color: var(--navy-950); }
.timeline__item p { margin-top: .5rem; font-size: var(--fs-sm); color: var(--ink-soft); line-height: 1.55; }

/* ---------- Histórias em destaque ---------- */
.stories__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4); }
.story {
  position: relative; display: flex; flex-direction: column; min-height: 100%;
  padding: var(--space-5); border-radius: var(--radius); background: var(--paper);
  border: 1px solid var(--line-light); overflow: hidden;
  transition: transform .45s var(--ease), box-shadow .45s var(--ease), border-color .45s var(--ease), background-color .45s var(--ease);
}
.story::after { /* traço de circuito no canto */
  content: ""; position: absolute; right: -1px; top: -1px; width: 64px; height: 64px;
  background:
    radial-gradient(circle at 52px 12px, var(--sky) 3px, transparent 3.5px),
    linear-gradient(var(--sky), var(--sky)) 51px 12px / 1px 30px no-repeat,
    linear-gradient(var(--sky), var(--sky)) 30px 42px / 22px 1px no-repeat;
  opacity: .5; transition: opacity .45s;
}
.story:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: rgba(0, 69, 137, .25); background: var(--white); }
.story:hover::after { opacity: 1; }
.story__page { font-size: .75rem; letter-spacing: .16em; text-transform: uppercase; color: var(--steel); }
.story__title { margin-top: var(--space-3); font-family: var(--font-display); font-weight: 700; font-size: 1.65rem; line-height: 1.05; color: var(--navy-950); text-wrap: balance; }
.story__text { margin-top: var(--space-4); font-size: var(--fs-sm); line-height: 1.6; color: var(--ink-soft); flex: 1; }
.story__author { margin-top: var(--space-5); padding-top: var(--space-4); border-top: 1px solid var(--line-light); font-weight: 600; font-size: var(--fs-sm); color: var(--blue-coti); }
.stories__more { margin-top: var(--space-6); font-family: var(--font-serif); font-style: italic; font-size: 1.2rem; color: var(--steel); }

/* ---------- Coautores ---------- */
.authors__grid { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line-dark); border-left: 1px solid var(--line-dark); }
.author {
  position: relative; display: flex; flex-direction: column; padding: var(--space-5) var(--space-5) var(--space-4);
  background: var(--navy-950); min-height: 190px;
  border-right: 1px solid var(--line-dark); border-bottom: 1px solid var(--line-dark);
  transition: background-color .5s var(--ease);
}
.author::before {
  content: ""; position: absolute; left: 0; top: 0; height: 2px; width: 100%;
  background: linear-gradient(90deg, var(--blue-bright), transparent); transform: scaleX(0); transform-origin: left;
  transition: transform .5s var(--ease);
}
.author:hover { background: #07203a; }
.author:hover::before { transform: scaleX(1); }
.author__n { font-family: var(--font-display); font-weight: 600; font-size: .95rem; letter-spacing: .12em; color: var(--sky); }
.author__name { margin-top: var(--space-3); font-family: var(--font-display); font-weight: 700; font-size: 1.5rem; line-height: 1.05; letter-spacing: .01em; color: var(--white); }
.author__chapter { margin-top: var(--space-3); font-family: var(--font-serif); font-style: italic; font-size: 1rem; line-height: 1.4; color: #b9cbdc; flex: 1; }
.author__chapter span { display: block; font-size: .92em; color: #8ea7bd; }
.author__page { margin-top: var(--space-4); font-size: .75rem; letter-spacing: .14em; text-transform: uppercase; color: #7f98ae; }
.authors__org { margin-top: var(--space-6); color: #b7c8d8; font-size: var(--fs-sm); }
.authors__org strong { color: var(--white); }

/* ---------- Por dentro do livro ---------- */
.inside__grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 1rem + 4vw, 5rem); align-items: start; }
.inside__visual { display: grid; grid-template-columns: 1.1fr .9fr; gap: var(--space-4); align-items: end; }
.inside__visual img { border-radius: 4px; box-shadow: var(--shadow); }
.inside__visual figcaption, .page figcaption { margin-top: var(--space-3); font-size: var(--fs-xs); color: var(--muted); }
.specs { margin: 0; border-top: 1px solid var(--line-light); }
.specs > div { display: grid; grid-template-columns: 9.5rem 1fr; gap: var(--space-4); padding: .85rem 0; border-bottom: 1px solid var(--line-light); }
.specs dt { font-size: .75rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); padding-top: .2rem; }
.specs dd { margin: 0; color: var(--navy-950); font-weight: 500; }
.structure { list-style: none; margin-top: var(--space-6); display: grid; gap: var(--space-3); }
.structure li { display: grid; grid-template-columns: 4.5rem 1fr; gap: 0 var(--space-4); font-size: var(--fs-sm); color: var(--ink-soft); }
.structure span { grid-row: span 2; font-family: var(--font-display); font-weight: 600; font-size: 1.15rem; color: var(--blue-coti); }
.structure strong { color: var(--navy-950); }

.pages { display: flex; justify-content: center; gap: clamp(.75rem, .5rem + 1.5vw, 2rem); margin-top: clamp(3rem, 2rem + 4vw, 6rem); padding-inline: var(--space-4); }
.page { width: min(30%, 280px); transition: transform .6s var(--ease); }
.page img { border-radius: 2px; box-shadow: 0 1px 0 rgba(0,0,0,.04), 0 20px 40px -18px rgba(2, 17, 32, .35); border: 1px solid var(--line-light); }
.page:nth-child(1) { transform: rotate(-3deg) translateY(10px); }
.page:nth-child(3) { transform: rotate(3deg) translateY(10px); }
.page:hover { transform: rotate(0) translateY(-6px); }

/* ---------- Trechos ---------- */
.quotes { overflow: hidden; }
.quotes__head { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--space-5); margin-bottom: var(--space-7); }
.quotes__controls { display: flex; gap: var(--space-3); }
.round-btn {
  width: 52px; height: 52px; display: grid; place-items: center; border-radius: 50%;
  background: transparent; border: 1px solid rgba(156, 195, 230, .4); color: var(--white); cursor: pointer;
  transition: background-color .25s, border-color .25s, opacity .25s;
}
.round-btn:hover:not(:disabled) { background: rgba(255,255,255,.08); border-color: var(--white); }
.round-btn:disabled { opacity: .3; cursor: default; }
.quotes__track {
  display: grid; grid-auto-flow: column; grid-auto-columns: min(78vw, 440px); gap: var(--space-5);
  overflow-x: auto; scroll-snap-type: x mandatory; overscroll-behavior-x: contain;
  padding: var(--space-2) max(var(--gutter), calc((100vw - var(--container)) / 2)) var(--space-6);
  scroll-padding-inline: max(var(--gutter), calc((100vw - var(--container)) / 2));
  scrollbar-width: thin; scrollbar-color: rgba(156,195,230,.35) transparent;
}
.quotes__track:focus-visible { outline-offset: -3px; }
.quote {
  scroll-snap-align: start; display: flex; flex-direction: column; justify-content: space-between;
  min-height: 320px; padding: var(--space-6); border-radius: var(--radius-lg);
  background: rgba(255,255,255,.04); border: 1px solid var(--line-dark);
}
.quote blockquote p::before { content: "“"; display: block; font-family: var(--font-serif); font-size: 4.5rem; line-height: .7; color: var(--sky); margin-bottom: .2rem; }
.quote blockquote p { font-family: var(--font-serif); font-style: italic; font-size: clamp(1.3rem, 1.15rem + .5vw, 1.6rem); line-height: 1.38; color: var(--white); }
.quote figcaption { margin-top: var(--space-6); padding-top: var(--space-4); border-top: 1px solid var(--line-dark); }
.quote figcaption strong { display: block; font-weight: 600; color: var(--white); font-size: var(--fs-sm); }
.quote figcaption span { display: block; margin-top: .15rem; font-size: var(--fs-xs); color: #93aabf; }

/* ---------- Ecossistema ---------- */
.ecosystem__head { display: grid; grid-template-columns: 1.3fr .7fr; gap: var(--space-7); align-items: end; margin-bottom: clamp(2.5rem, 2rem + 3vw, 5rem); }
.ecosystem__grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(2rem, 1rem + 5vw, 6rem); align-items: center; }
.eco-map__svg { width: 100%; max-width: 520px; margin-inline: auto; overflow: visible; }
.eco-map__ring { fill: none; stroke: rgba(81, 115, 142, .25); stroke-width: 1; }
.eco-map__ring--inner { stroke-dasharray: 3 6; }
.eco-map__links path { fill: none; stroke: var(--steel); stroke-width: 1.6; }
.eco-map__center circle { fill: var(--navy-950); }
.eco-map__center text { fill: var(--white); font-family: var(--font-display); font-weight: 700; font-size: 26px; letter-spacing: .12em; }
.eco-map__center .eco-map__small { fill: var(--sky-200); font-family: var(--font-serif); font-style: italic; font-weight: 400; font-size: 16px; letter-spacing: 0; }
.eco-map__node circle { fill: var(--white); stroke: var(--blue-coti); stroke-width: 3; }
.eco-map__node text { fill: var(--navy-950); font-family: var(--font-display); font-weight: 700; font-size: 22px; letter-spacing: .08em; text-transform: uppercase; }
.eco-map__pulse circle { fill: var(--blue-bright); filter: drop-shadow(0 0 6px rgba(47, 123, 200, .8)); }
.eco-list { list-style: none; display: grid; gap: 0; border-top: 1px solid var(--line-light); }
.eco-item { padding: var(--space-5) 0; border-bottom: 1px solid var(--line-light); }
.eco-item h3 { font-family: var(--font-display); font-weight: 700; font-size: 1.45rem; color: var(--navy-950); }
.eco-item p { margin-top: .4rem; color: var(--ink-soft); font-size: var(--fs-sm); line-height: 1.6; max-width: 60ch; }

/* ---------- Manifesto ---------- */
.manifesto {
  position: relative; overflow: hidden; isolation: isolate;
  padding: clamp(7rem, 5rem + 10vw, 14rem) 0;
  background: radial-gradient(60% 70% at 50% 50%, #0a2c50 0%, var(--navy-950) 70%);
  color: var(--white); text-align: center;
}
.manifesto__twenty {
  position: absolute; inset: 50% auto auto 50%; transform: translate(-50%, -50%); z-index: -1;
  font-family: var(--font-display); font-weight: 700; font-size: clamp(22rem, 60vw, 60rem); line-height: .8; letter-spacing: -.05em;
  color: rgba(106, 141, 169, .07); user-select: none;
}
.manifesto__inner { max-width: 1000px; }
.manifesto__quote p { font-family: var(--font-display); font-weight: 700; font-size: clamp(2.6rem, 1.4rem + 5.5vw, 6.2rem); line-height: 1; text-transform: uppercase; letter-spacing: -.005em; text-wrap: balance; }
.manifesto__quote span { display: block; }
.manifesto__quote span + span { color: var(--sky-200); }
.manifesto__cite { margin-top: var(--space-6); font-size: var(--fs-xs); letter-spacing: .16em; text-transform: uppercase; color: #8ea7bd; }
.manifesto__text { margin: var(--space-7) auto 0; max-width: 34ch; font-family: var(--font-serif); font-style: italic; font-size: clamp(1.2rem, 1rem + .8vw, 1.6rem); line-height: 1.45; color: #cddbe8; }

/* ---------- CTA ---------- */
.cta {
  position: relative; overflow: hidden; isolation: isolate;
  padding: clamp(5rem, 4rem + 5vw, 8rem) 0;
  background: linear-gradient(135deg, #031a31 0%, #06284a 55%, #021120 100%);
  color: var(--white);
}
.cta .circuit { z-index: -1; opacity: .7; }
.cta__grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(2rem, 1rem + 5vw, 6rem); align-items: center; }
.cta__book { display: flex; justify-content: center; padding-bottom: 2rem; }
.cta__title { font-family: var(--font-display); font-weight: 700; font-size: clamp(2.4rem, 1.6rem + 3.2vw, 4.6rem); line-height: 1; text-wrap: balance; max-width: 18ch; }
.cta__lead { margin: var(--space-5) 0 var(--space-6); font-size: var(--fs-lg); color: #c9d6e2; max-width: 46ch; }
.cta__note { margin-top: var(--space-4); font-size: var(--fs-sm); color: #9fb3c6; }

/* ---------- Sobre a COTI ---------- */
.about__grid { display: grid; grid-template-columns: .7fr 1.3fr; gap: clamp(2rem, 1rem + 5vw, 6rem); align-items: start; }
.about__brand {
  display: grid; place-items: center; gap: var(--space-4); padding: clamp(2rem, 1.5rem + 2vw, 3.5rem) var(--space-5);
  border: 1px solid var(--line-light); border-radius: var(--radius-lg); background: var(--white);
  position: sticky; top: calc(var(--header-h) + 2rem);
}
.about__brand img { width: 100%; max-width: 280px; }
.about__since { font-size: var(--fs-xs); letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.about .prose { margin-top: var(--space-5); font-size: var(--fs-lg); }
.about__tags-label { margin-top: var(--space-6); font-size: .75rem; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.tags { list-style: none; display: flex; flex-wrap: wrap; gap: .5rem; margin-top: var(--space-3); }
.tags li { padding: .4rem .8rem; border-radius: var(--radius-pill); background: var(--paper); border: 1px solid var(--line-light); font-size: var(--fs-xs); color: var(--ink-soft); }

/* ---------- Encerramento ---------- */
.closing {
  position: relative; overflow: hidden; isolation: isolate;
  padding: clamp(6rem, 4rem + 8vw, 11rem) 0 clamp(5rem, 4rem + 6vw, 9rem);
  background: var(--navy-950); color: var(--white); text-align: center;
}
.closing .circuit { z-index: -1; }
.closing__years { font-family: var(--font-display); font-weight: 600; letter-spacing: .3em; text-transform: uppercase; color: var(--sky-200); font-size: 1rem; }
.closing__title { margin-top: var(--space-5); font-family: var(--font-display); font-weight: 700; font-size: clamp(2.4rem, 1.5rem + 3.5vw, 4.8rem); line-height: 1.02; text-wrap: balance; }
.closing__title span { display: block; margin-top: .3em; font-family: var(--font-serif); font-style: italic; font-weight: 400; font-size: .6em; line-height: 1.3; color: #cddbe8; }

/* ---------- Footer ---------- */
.site-footer { background: #010b16; color: #a9bccd; padding: var(--space-8) 0 var(--space-5); border-top: 1px solid var(--line-dark); }
.site-footer__grid { display: grid; grid-template-columns: 1.2fr 1fr auto; gap: var(--space-6); align-items: center; }
.site-footer__brand img { width: 206px; }
.site-footer__brand p { margin-top: var(--space-4); font-size: var(--fs-sm); }
.site-footer__nav ul { list-style: none; display: flex; flex-wrap: wrap; gap: .25rem 1.5rem; }
.site-footer__nav a { display: inline-block; padding: .5rem 0; text-decoration: none; font-size: var(--fs-sm); color: #cddbe8; }
.site-footer__nav a:hover { color: var(--white); text-decoration: underline; text-underline-offset: 4px; }
.site-footer__legal { margin-top: var(--space-7); padding-top: var(--space-5); border-top: 1px solid var(--line-dark); font-size: var(--fs-xs); color: #7890a6; }

/* ---------- CTA fixo mobile ---------- */
.sticky-cta { display: none; }

/* ==========================================================================
   ANIMAÇÕES DE ENTRADA
   ========================================================================== */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s var(--ease), transform .8s var(--ease); transition-delay: var(--delay, 0s); }
.js .reveal.is-visible { opacity: 1; transform: none; }
.js .author { opacity: 0; transform: translateY(16px); transition: opacity .6s var(--ease), transform .6s var(--ease), background-color .5s var(--ease); transition-delay: var(--delay, 0s); }
.js .author.is-visible { opacity: 1; transform: none; }
.js .hero__text > * { animation: hero-in 1s var(--ease) both; }
.js .hero__text > *:nth-child(2) { animation-delay: .08s; }
.js .hero__text > *:nth-child(3) { animation-delay: .16s; }
.js .hero__text > *:nth-child(4) { animation-delay: .24s; }
.js .hero__text > *:nth-child(n+5) { animation-delay: .32s; }
.js .hero__book { animation: hero-book 1.3s .2s var(--ease) both; }
@keyframes hero-in { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: none; } }
@keyframes hero-book { from { opacity: 0; transform: translateY(30px) scale(.97); } to { opacity: 1; transform: none; } }

/* ==========================================================================
   RESPONSIVO
   ========================================================================== */
@media (max-width: 1100px) {
  .stories__grid { grid-template-columns: repeat(2, 1fr); }
  .authors__grid { grid-template-columns: repeat(3, 1fr); }
  .timeline { grid-template-columns: repeat(2, 1fr); }
  .timeline::before { display: none; }
  .timeline__item:nth-child(5)::after { display: none; }
  .timeline__item { border-top: 1px solid rgba(0, 69, 137, .25); }
  .timeline__item::before { top: -7px; }
}

@media (max-width: 900px) {
  :root { --header-h: 64px; }
  .nav-toggle { display: block; }
  .site-header__cta { display: none; }
  .site-nav {
    position: fixed; inset: var(--header-h) 0 0 0; margin: 0;
    display: flex; flex-direction: column; gap: var(--space-6);
    padding: var(--space-6) var(--gutter) var(--space-7);
    background: rgba(2, 17, 32, .97);
    -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
    opacity: 0; visibility: hidden; transform: translateY(-8px);
    transition: opacity .3s var(--ease), transform .3s var(--ease), visibility 0s .3s;
  }
  .site-nav.is-open { opacity: 1; visibility: visible; transform: none; transition-delay: 0s; }
  .site-nav__list { flex-direction: column; gap: 0; }
  .site-nav__list a { display: block; padding: 1rem 0; font-family: var(--font-display); font-weight: 600; font-size: 1.9rem; letter-spacing: .02em; border-bottom: 1px solid var(--line-dark); }
  .site-nav__list a::after { display: none; }
  .site-nav__cta-mobile { display: inline-flex; align-self: flex-start; min-height: 52px; padding: .9rem 1.5rem; font-size: 1.05rem; }
  body.nav-open { overflow: hidden; }
  body.nav-open .site-header { background: var(--navy-950); }

  .hero { min-height: auto; padding: calc(var(--header-h) + 2.5rem) 0 4.5rem; }
  .hero__grid { grid-template-columns: 1fr; }
  .hero__book { order: 2; margin-top: var(--space-4); }
  .hero__twenty { right: -20vw; top: 62%; font-size: 110vw; }
  .hero__scroll, .pulse { display: none; }
  .book { --w: min(62vw, 300px); }
  .book--small { --w: min(52vw, 260px); }

  .intro__grid, .origin__grid, .inside__grid, .ecosystem__grid, .ecosystem__head, .cta__grid, .about__grid { grid-template-columns: 1fr; }
  .origin__facts { position: static; grid-template-columns: repeat(2, 1fr); }
  .about__brand { position: static; }
  .numbers__grid { grid-template-columns: repeat(2, 1fr); }
  .stat, .stat + .stat { padding: var(--space-5) var(--space-4) var(--space-5) 0; border-right: 0; border-bottom: 1px solid var(--line-dark); }
  .stat:nth-child(odd) { border-right: 1px solid var(--line-dark); }
  .stat:nth-child(even) { padding-left: var(--space-4); }
  .cta__grid { text-align: left; }
  .cta__book { order: -1; }
  .eco-map { max-width: 420px; margin-inline: auto; width: 100%; }
  .site-footer__grid { grid-template-columns: 1fr; }

  .sticky-cta {
    position: fixed; left: 50%; bottom: calc(14px + env(safe-area-inset-bottom)); z-index: 90;
    display: inline-flex; align-items: center; gap: .6rem;
    min-height: 52px; padding: .9rem 1.6rem; border-radius: var(--radius-pill);
    background: var(--wa); color: var(--navy-950); font-weight: 600; text-decoration: none;
    box-shadow: 0 12px 30px -8px rgba(0, 0, 0, .5), 0 0 0 1px rgba(2, 17, 32, .08);
    transform: translate(-50%, 140%); opacity: 0;
    transition: transform .45s var(--ease), opacity .45s var(--ease);
  }
  .sticky-cta.is-visible { transform: translate(-50%, 0); opacity: 1; }
  .site-footer { padding-bottom: calc(var(--space-5) + 80px); }
}

@media (max-width: 640px) {
  .stories__grid { grid-template-columns: 1fr; }
  .authors__grid { grid-template-columns: repeat(2, 1fr); }
  .author { padding: var(--space-4); min-height: 170px; }
  .author__name { font-size: 1.25rem; }
  .author__chapter { font-size: .9rem; }
  .timeline { grid-template-columns: 1fr; gap: var(--space-5); }
  .origin__facts { grid-template-columns: 1fr; }
  .hero__actions .btn { width: 100%; }
  .hero__meta { gap: var(--space-5); }
  .inside__visual { grid-template-columns: 1fr 1fr; }
  .pages { gap: .5rem; padding-inline: 0; }
  .specs > div { grid-template-columns: 1fr; gap: .2rem; }
  .quotes__head { flex-direction: column; align-items: flex-start; }
  .quote { min-height: 280px; padding: var(--space-5); }
  .btn--xl { width: 100%; white-space: normal; }
  .hero__title .line--accent { font-size: .6em; }
}

@media (max-width: 380px) {
  .authors__grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   MOVIMENTO REDUZIDO
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .js .reveal, .js .author { opacity: 1; transform: none; }
  .pulse, .eco-map__pulse { display: none; }
}
.section-title .block { display: block; }

/* ---------- Preço (seção de compra) ---------- */
.price { display: flex; flex-direction: column; gap: .25rem; margin-bottom: var(--space-5); }
.price__label { font-size: .75rem; letter-spacing: .16em; text-transform: uppercase; color: #9fb3c6; }
.price__value { font-family: var(--font-display); font-weight: 700; font-size: clamp(3rem, 2.4rem + 2.5vw, 4.5rem); line-height: 1; color: var(--white); }
.price__value small { font-size: .42em; font-weight: 600; margin-right: .2em; color: var(--sky-200); vertical-align: .9em; }