/* Central de Conhecimento — extensão visual do site institucional */
.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 1px solid rgba(243,211,123,.34);
  border-radius: 50%;
  background: rgba(255,255,255,.06);
  color: var(--gold-2);
  cursor: pointer;
  place-items: center;
}
.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after {
  content: "";
  display: block;
  width: 19px;
  height: 2px;
  border-radius: 99px;
  background: currentColor;
  transition: transform .28s ease, opacity .28s ease;
}
.nav-toggle span { margin: 4px 0; }
.nav-toggle[aria-expanded="true"] span { opacity: 0; }
.nav-toggle[aria-expanded="true"]::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"]::after { transform: translateY(-6px) rotate(-45deg); }
.main-nav { gap: clamp(12px, 1.35vw, 24px); font-size: clamp(.78rem, .82vw, .92rem); }
.main-nav > a { white-space: nowrap; }
.main-nav a[aria-current="page"] { color: var(--gold-2); }
.main-nav a[aria-current="page"]::after { transform: scaleX(1); }
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0,0,0,0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.knowledge-page { background: #fff; }
.knowledge-page .site-header { position: sticky; }
.knowledge-hero {
  position: relative;
  overflow: hidden;
  padding: 92px 0 82px;
  background:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px),
    radial-gradient(circle at 78% 30%, rgba(243,211,123,.22), transparent 30%),
    radial-gradient(circle at 8% 2%, rgba(217,170,56,.18), transparent 28%),
    #050505;
  background-size: 68px 68px, 68px 68px, auto, auto, auto;
  color: #fff;
}
.knowledge-hero::after {
  content: "";
  position: absolute;
  right: -120px;
  bottom: -210px;
  width: 520px;
  height: 520px;
  border: 1px solid rgba(243,211,123,.18);
  border-radius: 50%;
  box-shadow: 0 0 0 60px rgba(243,211,123,.03), 0 0 0 120px rgba(243,211,123,.02);
  pointer-events: none;
}
.knowledge-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, .75fr);
  gap: 54px;
  align-items: center;
}
.knowledge-hero h1 { max-width: 850px; font-size: clamp(2.7rem, 6vw, 5.45rem); }
.knowledge-hero h1 span { color: var(--gold-2); }
.knowledge-hero .hero-text { max-width: 780px; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 24px; color: rgba(255,255,255,.62); font-size: .9rem; font-weight: 750; }
.breadcrumb a { color: var(--gold-2); }
.breadcrumb i { font-style: normal; opacity: .5; }
.knowledge-hero-card {
  padding: 28px;
  border: 1px solid rgba(243,211,123,.25);
  border-radius: 28px;
  background: linear-gradient(145deg, rgba(255,255,255,.10), rgba(255,255,255,.025));
  box-shadow: 0 28px 80px rgba(0,0,0,.30);
}
.knowledge-hero-card strong { display: block; color: var(--gold-2); font-size: 2.4rem; line-height: 1; margin-bottom: 8px; }
.knowledge-hero-card p { color: rgba(255,255,255,.72); margin-bottom: 18px; }
.knowledge-hero-card ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.knowledge-hero-card li { position: relative; padding-left: 24px; color: rgba(255,255,255,.82); }
.knowledge-hero-card li::before { content: "✓"; position: absolute; left: 0; color: var(--gold-2); font-weight: 950; }

.knowledge-search {
  position: relative;
  z-index: 4;
  margin-top: -32px;
  padding: 22px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: center;
  border-radius: 24px;
  background: #fff;
  border: 1px solid rgba(0,0,0,.07);
  box-shadow: 0 22px 64px rgba(0,0,0,.15);
}
.knowledge-search label { display: block; font-weight: 950; margin-bottom: 7px; }
.knowledge-search input {
  width: 100%;
  min-height: 52px;
  padding: 13px 18px;
  border: 1px solid rgba(0,0,0,.14);
  border-radius: 16px;
  background: #faf8f3;
  color: var(--black);
  font: inherit;
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.knowledge-search input:focus { border-color: var(--gold); background: #fff; box-shadow: 0 0 0 4px rgba(217,170,56,.13); }
.knowledge-search-count { color: var(--gray); font-weight: 800; white-space: nowrap; }

/* Busca inteligente — página Perguntas frequentes */
.faq-search-section {
  position: relative;
  z-index: 6;
  margin-top: -36px;
  padding: 0 0 52px;
  background: linear-gradient(180deg, transparent 0 36px, #fffaf0 36px 100%);
}
.faq-search-box {
  padding: 26px;
  border: 1px solid rgba(0,0,0,.08);
  border-radius: 26px;
  background: #fff;
  box-shadow: 0 24px 70px rgba(0,0,0,.16);
}
.faq-search-heading {
  display: grid;
  grid-template-columns: minmax(0,1fr) auto;
  gap: 24px;
  align-items: start;
  margin-bottom: 20px;
}
.faq-search-heading h2 { margin-bottom: 8px; font-size: clamp(1.75rem,3.2vw,2.65rem); }
.faq-search-heading p:last-child { max-width: 760px; margin-bottom: 0; color: #505050; }
.faq-search-badge {
  padding: 9px 13px;
  border: 1px solid rgba(217,170,56,.32);
  border-radius: 999px;
  background: rgba(243,211,123,.18);
  color: #765313;
  font-size: .78rem;
  font-weight: 950;
  white-space: nowrap;
}
.faq-search-field { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 10px; }
.faq-search-field input {
  width: 100%;
  min-height: 58px;
  padding: 15px 19px;
  border: 1px solid rgba(0,0,0,.16);
  border-radius: 17px;
  background: #faf8f3;
  color: #111;
  font: inherit;
  font-size: 1rem;
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.faq-search-field input:focus { border-color: var(--gold); background: #fff; box-shadow: 0 0 0 4px rgba(217,170,56,.14); }
.faq-search-clear {
  min-width: 86px;
  padding: 0 16px;
  border: 1px solid rgba(0,0,0,.12);
  border-radius: 15px;
  background: #111;
  color: #fff;
  font: inherit;
  font-weight: 900;
  cursor: pointer;
}
.faq-search-clear:hover { color: var(--gold-2); }
.faq-search-suggestions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 14px; }
.faq-search-suggestions span { margin-right: 3px; color: #666; font-size: .82rem; font-weight: 800; }
.faq-search-suggestions button {
  padding: 8px 11px;
  border: 1px solid rgba(217,170,56,.28);
  border-radius: 999px;
  background: #fffaf0;
  color: #6e4e13;
  font: inherit;
  font-size: .78rem;
  font-weight: 900;
  cursor: pointer;
  transition: background .2s ease, border-color .2s ease, transform .2s ease;
}
.faq-search-suggestions button:hover { transform: translateY(-2px); border-color: var(--gold); background: rgba(243,211,123,.22); }
.faq-search-status { min-height: 21px; margin: 14px 0 0; color: #626262; font-size: .86rem; }
.faq-search-results {
  margin-top: 20px;
  padding: 26px;
  border: 1px solid rgba(217,170,56,.26);
  border-radius: 26px;
  background: linear-gradient(145deg,#fffaf0,#f4ead3);
  box-shadow: 0 18px 48px rgba(0,0,0,.08);
}
.faq-search-results[hidden] { display: none; }
.faq-results-head { display: flex; align-items: end; justify-content: space-between; gap: 18px; margin-bottom: 18px; }
.faq-results-head h2 { margin-bottom: 0; font-size: clamp(1.55rem,2.7vw,2.25rem); }
.faq-results-head > span { color: #6a5a39; font-size: .84rem; font-weight: 900; white-space: nowrap; }
.faq-results-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 13px; }
.faq-result-card {
  padding: 20px;
  border: 1px solid rgba(0,0,0,.08);
  border-radius: 19px;
  background: #fff;
  box-shadow: 0 10px 28px rgba(0,0,0,.055);
}
.faq-result-card .faq-result-topic { margin: 0 0 8px; color: #9a6f16; font-size: .71rem; font-weight: 950; letter-spacing: .08em; text-transform: uppercase; }
.faq-result-card h3 { margin-bottom: 9px; font-size: 1.08rem; line-height: 1.25; }
.faq-result-card > p:not(.faq-result-topic) { margin-bottom: 15px; color: #4c4c4c; font-size: .91rem; line-height: 1.55; }
.faq-result-open {
  padding: 0;
  border: 0;
  background: transparent;
  color: #835e13;
  font: inherit;
  font-size: .83rem;
  font-weight: 950;
  cursor: pointer;
}
.faq-result-open:hover { color: #111; }
.faq-search-fallback {
  margin-top: 18px;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-radius: 20px;
  background: #0b0b0b;
  color: #fff;
}
.faq-search-fallback strong { display: block; margin-bottom: 5px; color: var(--gold-2); }
.faq-search-fallback p { margin-bottom: 0; color: rgba(255,255,255,.70); font-size: .9rem; }
.faq-search-fallback .btn { flex: 0 0 auto; }

/* Hub compacto — página Perguntas frequentes */
.faq-compact-hero { padding-bottom: 104px; }
.faq-hub-section {
  position: relative;
  z-index: 6;
  margin-top: -42px;
  padding: 0 0 92px;
  background: linear-gradient(180deg,transparent 0 42px,#fffaf0 42px 100%);
}
.faq-hub-layout {
  display: grid;
  grid-template-columns: 252px minmax(0,1fr);
  gap: 28px;
  align-items: start;
}
.faq-hub-sidebar {
  position: sticky;
  top: 108px;
  display: grid;
  gap: 16px;
}
.faq-hub-nav,
.faq-hub-help {
  padding: 21px;
  border: 1px solid rgba(0,0,0,.08);
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 14px 38px rgba(0,0,0,.07);
}
.faq-hub-nav > span {
  display: block;
  margin-bottom: 10px;
  color: #9a6f16;
  font-size: .74rem;
  font-weight: 950;
  letter-spacing: .09em;
  text-transform: uppercase;
}
.faq-hub-nav a {
  display: block;
  padding: 11px 0;
  border-bottom: 1px solid rgba(0,0,0,.07);
  color: #333;
  font-size: .88rem;
  font-weight: 850;
  line-height: 1.35;
}
.faq-hub-nav a:last-child { border-bottom: 0; }
.faq-hub-nav a:hover { color: #9a6f16; }
.faq-hub-help { background: #0b0b0b; color: #fff; }
.faq-hub-help h2 { margin-bottom: 8px; color: #fff; font-size: 1.35rem; }
.faq-hub-help > p:not(.eyebrow) { color: rgba(255,255,255,.7); font-size: .88rem; }
.faq-hub-help .btn { width: 100%; padding-inline: 12px; text-align: center; }
.faq-hub-main { min-width: 0; }
.faq-hub-main > .faq-search-box { scroll-margin-top: 110px; }
.faq-hub-main > .faq-search-results { margin-bottom: 28px; }
.faq-hub-heading { margin-bottom: 22px; }
.faq-hub-heading h2 { margin-bottom: 8px; font-size: clamp(1.8rem,3.3vw,2.75rem); }
.faq-hub-heading > p:last-child { max-width: 720px; margin-bottom: 0; color: #555; }
.faq-featured,
.faq-guides {
  scroll-margin-top: 110px;
  margin-top: 28px;
  padding: 30px;
  border: 1px solid rgba(0,0,0,.075);
  border-radius: 28px;
  background: #fff;
  box-shadow: 0 18px 52px rgba(0,0,0,.065);
}
.faq-featured-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; }
.faq-featured details {
  overflow: hidden;
  border: 1px solid rgba(217,170,56,.24);
  border-radius: 19px;
  background: linear-gradient(145deg,#fffdf8,#fff8e9);
  transition: border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.faq-featured details:hover { transform: translateY(-2px); border-color: rgba(217,170,56,.55); box-shadow: 0 12px 30px rgba(0,0,0,.06); }
.faq-featured summary {
  position: relative;
  padding: 18px 48px 12px 18px;
  color: #161616;
  font-weight: 950;
  line-height: 1.35;
  cursor: pointer;
  list-style: none;
}
.faq-featured summary::-webkit-details-marker { display: none; }
.faq-featured summary::after {
  content: "−";
  position: absolute;
  right: 17px;
  top: 16px;
  display: grid;
  width: 25px;
  height: 25px;
  place-items: center;
  border-radius: 50%;
  background: #111;
  color: var(--gold-2);
}
.faq-featured details:not([open]) summary { padding-bottom: 18px; }
.faq-featured details:not([open]) summary::after { content: "+"; }
.faq-featured details p { padding: 0 18px 19px; margin: 0; color: #4c4c4c; font-size: .91rem; line-height: 1.58; }
.faq-featured details p strong { color: #765313; }
.faq-all-link {
  margin-top: 18px;
  padding-top: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border-top: 1px solid rgba(0,0,0,.08);
  color: #666;
  font-size: .9rem;
}
.faq-all-link a { color: #765313; font-weight: 950; text-decoration: underline; text-underline-offset: 4px; }
.faq-all-link a:hover { color: #111; }
.faq-guide-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; }
.faq-guide-card {
  position: relative;
  min-height: 210px;
  padding: 23px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgba(0,0,0,.09);
  border-radius: 22px;
  background: #0b0b0b;
  color: #fff;
  transition: transform .3s cubic-bezier(.16,1,.3,1),border-color .3s ease,box-shadow .3s ease;
}
.faq-guide-card:hover { transform: translateY(-5px); border-color: rgba(243,211,123,.5); box-shadow: 0 18px 42px rgba(0,0,0,.18); }
.faq-guide-card > span { position: absolute; right: 17px; top: 5px; color: rgba(243,211,123,.12); font-size: 4.7rem; font-weight: 950; line-height: 1; }
.faq-guide-card h3 { position: relative; z-index: 1; margin: 15px 0 9px; color: var(--gold-2); font-size: 1.3rem; }
.faq-guide-card p { position: relative; z-index: 1; color: rgba(255,255,255,.7); font-size: .9rem; }
.faq-guide-card strong { position: relative; z-index: 1; margin-top: auto; color: #fff; font-size: .84rem; }
.faq-guide-card:last-child:nth-child(odd) { grid-column: 1 / -1; min-height: 190px; }
.faq-knowledge-principles {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3,minmax(0,1fr));
  gap: 12px;
}
.faq-knowledge-principles article {
  padding: 18px;
  border: 1px solid rgba(217,170,56,.24);
  border-radius: 18px;
  background: #fffaf0;
}
.faq-knowledge-principles strong { display: block; margin-bottom: 6px; color: #765313; font-size: .93rem; }
.faq-knowledge-principles span { display: block; color: #555; font-size: .82rem; line-height: 1.5; }

.knowledge-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 18px; }
.knowledge-card {
  position: relative;
  min-height: 280px;
  padding: 26px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgba(0,0,0,.08);
  border-radius: 26px;
  background: #fff;
  box-shadow: 0 12px 34px rgba(0,0,0,.06);
  transition: transform .35s cubic-bezier(.16,1,.3,1), box-shadow .35s ease, border-color .35s ease;
}
.knowledge-card::before {
  content: attr(data-number);
  position: absolute;
  right: 16px;
  top: 5px;
  color: rgba(217,170,56,.11);
  font-size: 5.4rem;
  line-height: 1;
  font-weight: 950;
  letter-spacing: -.08em;
}
.knowledge-card::after { content: ""; position: absolute; inset: auto 0 0; height: 4px; background: linear-gradient(90deg,var(--gold),var(--gold-2)); transform: scaleX(.28); transform-origin: left; transition: transform .35s ease; }
.knowledge-card:hover { transform: translateY(-8px); border-color: rgba(217,170,56,.38); box-shadow: 0 24px 56px rgba(0,0,0,.12); }
.knowledge-card:hover::after { transform: scaleX(1); }
.knowledge-card .eyebrow { margin-bottom: 22px; }
.knowledge-card h2, .knowledge-card h3 { position: relative; z-index: 1; font-size: 1.42rem; letter-spacing: -.025em; margin-bottom: 12px; }
.knowledge-card p { position: relative; z-index: 1; color: #505050; }
.knowledge-card .knowledge-link { margin-top: auto; padding-top: 18px; font-weight: 950; }
.knowledge-card .knowledge-link span { color: var(--gold); display: inline-block; transition: transform .25s ease; }
.knowledge-card:hover .knowledge-link span { transform: translateX(5px); }
.knowledge-card[hidden] { display: none; }
.knowledge-empty { display: none; padding: 30px; text-align: center; border: 1px dashed rgba(0,0,0,.16); border-radius: 22px; color: var(--gray); }
.knowledge-empty.is-visible { display: block; }

.knowledge-intro { max-width: 850px; margin-bottom: 36px; }
.knowledge-intro p { color: #444; font-size: 1.08rem; }
.knowledge-strip { padding: 28px 0; background: var(--muted); border-block: 1px solid rgba(0,0,0,.06); }
.knowledge-strip-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.knowledge-strip article { padding: 20px 22px; border-left: 3px solid var(--gold); }
.knowledge-strip strong { display: block; margin-bottom: 4px; }
.knowledge-strip span { color: #555; }

.article-shell { background: linear-gradient(180deg,#fff 0,#fff 72%,#faf6ed 100%); }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 310px; gap: 54px; align-items: start; }
.article-content { min-width: 0; }
.article-content > section { padding: 0 0 52px; margin-bottom: 52px; border-bottom: 1px solid rgba(0,0,0,.09); scroll-margin-top: 118px; }
.article-content > section:last-child { border-bottom: 0; margin-bottom: 0; }
.article-content h2 { font-size: clamp(1.85rem,3.4vw,3rem); }
.article-content h3 { font-size: 1.28rem; margin-top: 28px; }
.article-content p, .article-content li { color: #3f3f3f; font-size: 1.05rem; }
.article-content ul, .article-content ol { padding-left: 22px; }
.article-content li + li { margin-top: 9px; }
.article-lead { font-size: 1.22rem !important; color: #222 !important; }
.content-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; margin-top: 24px; }
.content-card { padding: 22px; border-radius: 20px; background: #faf7f0; border: 1px solid rgba(0,0,0,.07); }
.content-card h3 { margin-top: 0; }
.content-card p:last-child { margin-bottom: 0; }
.knowledge-callout { padding: 24px; margin: 26px 0; border-radius: 22px; border: 1px solid rgba(217,170,56,.30); background: linear-gradient(135deg,rgba(243,211,123,.18),rgba(243,211,123,.05)); }
.knowledge-callout strong { display: block; margin-bottom: 6px; }
.knowledge-callout p:last-child { margin-bottom: 0; }
.knowledge-callout.dark { color: #fff; background: #0b0b0b; border-color: rgba(243,211,123,.28); }
.knowledge-callout.dark p { color: rgba(255,255,255,.75); }
.comparison-table-wrap { overflow-x: auto; margin-top: 24px; border: 1px solid rgba(0,0,0,.08); border-radius: 20px; }
.comparison-table { width: 100%; border-collapse: collapse; min-width: 620px; background: #fff; }
.comparison-table th, .comparison-table td { padding: 15px 16px; text-align: left; vertical-align: top; border-bottom: 1px solid rgba(0,0,0,.07); }
.comparison-table th { background: #111; color: var(--gold-2); }
.comparison-table tr:last-child td { border-bottom: 0; }

/* Guia visual — tipos, materiais e índices de lentes */
.lens-education-figure {
  overflow: hidden;
  margin: 24px 0 0;
  border: 1px solid rgba(217,170,56,.24);
  border-radius: 24px;
  background: #090909;
  box-shadow: 0 18px 48px rgba(0,0,0,.12);
}
.lens-education-figure > img { display: block; width: 100%; height: auto; aspect-ratio: 2.11 / 1; object-fit: cover; }
.lens-education-figure > figcaption:not(.lens-type-caption-grid) { padding: 15px 18px; color: rgba(255,255,255,.72); font-size: .82rem; line-height: 1.5; }
.lens-type-caption-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); }
.lens-type-caption-grid > div { padding: 16px; border-right: 1px solid rgba(255,255,255,.1); }
.lens-type-caption-grid > div:last-child { border-right: 0; }
.lens-type-caption-grid strong { display: block; margin-bottom: 5px; color: var(--gold-2); font-size: .9rem; }
.lens-type-caption-grid span { display: block; color: rgba(255,255,255,.68); font-size: .78rem; line-height: 1.45; }
.digital-lens-explain-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; margin-top: 18px; }
.digital-lens-explain-grid article { padding: 22px; border: 1px solid rgba(217,170,56,.24); border-radius: 20px; background: linear-gradient(145deg,#fffdf8,#f8f0df); box-shadow: 0 10px 28px rgba(0,0,0,.045); }
.digital-lens-explain-grid article > span { display: inline-flex; margin-bottom: 11px; padding: 6px 9px; border-radius: 999px; background: #111; color: var(--gold-2); font-size: .68rem; font-weight: 950; letter-spacing: .06em; text-transform: uppercase; }
.digital-lens-explain-grid h3 { margin: 0 0 10px; font-size: 1.14rem; }
.digital-lens-explain-grid p { margin: 0; color: #505050; font-size: .9rem; line-height: 1.58; }
.lens-material-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; margin-top: 24px; }
.lens-material-card {
  padding: 21px;
  border: 1px solid rgba(0,0,0,.08);
  border-radius: 20px;
  background: linear-gradient(145deg,#fffdf8,#f8f0df);
  box-shadow: 0 10px 28px rgba(0,0,0,.045);
}
.lens-material-card:last-child:nth-child(odd) { grid-column: 1 / -1; }
.lens-material-head { display: flex; align-items: center; gap: 11px; margin-bottom: 12px; }
.lens-material-head > span { flex: 0 0 auto; padding: 7px 9px; border-radius: 999px; background: #111; color: var(--gold-2); font-size: .72rem; font-weight: 950; letter-spacing: .03em; }
.lens-material-head h3 { margin: 0; font-size: 1.04rem; }
.lens-material-card p { margin-bottom: 8px; color: #505050; font-size: .86rem; line-height: 1.55; }
.lens-material-card p:last-child { margin-bottom: 0; }
.lens-material-card p strong { color: #765313; }
.refractive-index-scale { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 10px; margin-top: 18px; }
.refractive-index-scale > div { padding: 15px 12px; border: 1px solid rgba(217,170,56,.26); border-radius: 16px; background: #fffaf0; text-align: center; }
.refractive-index-scale strong { display: block; margin-bottom: 4px; color: #765313; font-size: 1.05rem; }
.refractive-index-scale span { display: block; color: #555; font-size: .73rem; line-height: 1.35; }
.lens-source-links { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 10px; margin-top: 20px; }
.lens-source-links a { padding: 14px 15px; border: 1px solid rgba(217,170,56,.25); border-radius: 15px; background: #fffaf0; color: #765313; font-size: .83rem; font-weight: 850; line-height: 1.4; }
.lens-source-links a:hover { border-color: var(--gold); background: rgba(243,211,123,.2); }

/* Guia visual — tecnologias e tratamentos para lentes */
.treatment-summary-grid { display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); gap: 9px; margin-top: 22px; }
.treatment-summary-grid span { display: grid; place-items: center; min-height: 48px; padding: 10px; border: 1px solid rgba(217,170,56,.24); border-radius: 14px; background: #fffaf0; color: #765313; font-size: .74rem; font-weight: 900; line-height: 1.25; text-align: center; }
.treatment-visual-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 18px; margin-top: 26px; }
.treatment-card { overflow: hidden; border: 1px solid rgba(0,0,0,.08); border-radius: 24px; background: #fff; box-shadow: 0 15px 38px rgba(0,0,0,.07); }
.treatment-card figure { overflow: hidden; margin: 0; border-bottom: 1px solid rgba(217,170,56,.2); background: #060606; }
.treatment-card figure img { display: block; width: 100%; height: auto; aspect-ratio: 3 / 2; object-fit: cover; transition: transform .55s ease; }
.treatment-card:hover figure img { transform: scale(1.025); }
.treatment-card-body { padding: 21px; }
.treatment-tag { display: inline-flex; margin: 0 0 10px !important; padding: 6px 9px; border-radius: 999px; background: #111; color: var(--gold-2) !important; font-size: .68rem !important; font-weight: 950; letter-spacing: .08em; line-height: 1; text-transform: uppercase; }
.treatment-card h3 { margin: 0 0 12px; font-size: 1.18rem; }
.treatment-card-body > p:not(.treatment-tag) { margin: 0 0 9px; color: #505050; font-size: .84rem; line-height: 1.55; }
.treatment-card-body > p:last-child { margin-bottom: 0; }
.treatment-card-body strong { color: #765313; }
.treatment-benefit { padding: 12px 13px; border-left: 3px solid var(--gold); border-radius: 0 12px 12px 0; background: #fffaf0; }
.treatment-limit { color: #666 !important; font-size: .79rem !important; }
.treatment-section-note { margin-top: 15px; color: #606060; font-size: .86rem; }

.article-sidebar { position: sticky; top: 112px; display: grid; gap: 18px; }
.page-index, .sidebar-cta, .related-mini { padding: 22px; border-radius: 22px; border: 1px solid rgba(0,0,0,.08); background: #fff; box-shadow: 0 12px 34px rgba(0,0,0,.055); }
.page-index strong, .related-mini strong { display: block; margin-bottom: 13px; }
.page-index a, .related-mini a { display: block; padding: 8px 0; color: #444; font-weight: 750; border-bottom: 1px solid rgba(0,0,0,.06); }
.page-index a:last-child, .related-mini a:last-child { border-bottom: 0; }
.page-index a:hover, .related-mini a:hover { color: #9b7118; }
.sidebar-cta { background: #090909; color: #fff; border-color: rgba(243,211,123,.25); }
.sidebar-cta p { color: rgba(255,255,255,.70); }
.sidebar-cta .btn { width: 100%; }
.knowledge-faq { display: grid; gap: 12px; }
.knowledge-faq details { box-shadow: 0 8px 24px rgba(0,0,0,.04); }
.source-note { padding: 18px 20px; border-radius: 18px; background: #f3f5f6; color: #4f5559; font-size: .92rem; }
.source-note a { text-decoration: underline; font-weight: 800; }

/* Diagramas didáticos — página Campo de visão */
.vision-map-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}
.vision-map-card,
.corridor-card {
  margin: 0;
  padding: 22px;
  display: flex;
  flex-direction: column;
  align-items: center;
  border: 1px solid rgba(217,170,56,.24);
  border-radius: 24px;
  background:
    radial-gradient(circle at 50% 18%, rgba(243,211,123,.12), transparent 34%),
    #0b0b0b;
  box-shadow: 0 18px 42px rgba(0,0,0,.12);
  overflow: hidden;
}
.lens-map {
  position: relative;
  isolation: isolate;
  width: min(100%, 210px);
  aspect-ratio: .79;
  margin: 4px auto 22px;
  overflow: hidden;
  border: 3px solid #d9aa38;
  border-radius: 46% 46% 42% 42% / 35% 35% 48% 48%;
  background: linear-gradient(145deg, #222, #080808);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.14), 0 24px 40px rgba(0,0,0,.34);
}
.lens-map::after,
.corridor-lens::after {
  content: "";
  position: absolute;
  z-index: 8;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 12px 8px 22px rgba(255,255,255,.08), inset -14px -12px 28px rgba(0,0,0,.24);
  pointer-events: none;
}
.lens-map-glint {
  position: absolute;
  z-index: 9;
  left: 14%;
  top: 9%;
  width: 50%;
  height: 7%;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(255,255,255,.56), rgba(255,255,255,0));
  transform: rotate(-12deg);
  pointer-events: none;
}
.vision-zone {
  position: absolute;
  z-index: 3;
  display: grid;
  place-content: center;
  padding: 8px;
  color: #080808;
  text-align: center;
  line-height: 1.12;
}
.vision-zone strong { font-size: .88rem; }
.vision-zone small { display: block; margin-top: 4px; font-size: .65rem; font-weight: 800; opacity: .72; }
.vision-zone--single {
  inset: 0;
  background: radial-gradient(circle at 50% 46%, #f7df9d 0 24%, #dfb84d 55%, #a97c1e 100%);
}
.vision-zone--single strong { font-size: 1rem; }
.vision-zone--far {
  left: 8%;
  right: 8%;
  top: 5%;
  height: 40%;
  border-radius: 46% 46% 34% 34%;
  background: linear-gradient(180deg, #f5d97e, #ddb64e);
}
.vision-zone--corridor {
  z-index: 4;
  left: 31%;
  top: 35%;
  width: 38%;
  height: 34%;
  clip-path: polygon(21% 0, 79% 0, 100% 100%, 0 100%);
  background: linear-gradient(180deg, #d7b14a, #f4d77d 56%, #cf9f2c);
}
.vision-zone--corridor strong { font-size: .68rem; }
.vision-zone--corridor small { font-size: .6rem; }
.vision-zone--near {
  z-index: 5;
  left: 22%;
  right: 22%;
  bottom: 6%;
  height: 29%;
  border-radius: 46% 46% 42% 42%;
  background: linear-gradient(180deg, #f2d374, #be8c22);
}
.vision-periphery {
  position: absolute;
  z-index: 2;
  top: 38%;
  bottom: 6%;
  width: 31%;
  display: grid;
  place-items: center;
  color: rgba(255,255,255,.56);
  font-size: .57rem;
  font-weight: 900;
  text-transform: uppercase;
  writing-mode: vertical-rl;
  letter-spacing: .08em;
  background: repeating-linear-gradient(135deg, rgba(255,255,255,.055) 0 5px, rgba(255,255,255,.01) 5px 10px);
}
.vision-periphery--left { left: 0; transform: rotate(180deg); }
.vision-periphery--right { right: 0; }
.vision-zone--office-top {
  left: 8%;
  right: 8%;
  top: 7%;
  height: 52%;
  border-radius: 46% 46% 30% 30%;
  background: linear-gradient(180deg, #f4da88, #d1a23a);
}
.vision-zone--office-near {
  left: 12%;
  right: 12%;
  bottom: 6%;
  height: 46%;
  border-radius: 34% 34% 44% 44%;
  background: linear-gradient(180deg, #d9ad3d, #f5d97e 46%, #ae7f20);
}
.vision-map-card figcaption,
.corridor-card figcaption { width: 100%; color: rgba(255,255,255,.68); text-align: center; }
.vision-map-card figcaption strong,
.corridor-card figcaption strong { display: block; margin-bottom: 7px; color: #f3d37b; font-size: 1.08rem; }
.vision-map-card figcaption span,
.corridor-card figcaption span { display: block; font-size: .9rem; line-height: 1.5; }
.vision-legend {
  margin-top: 16px;
  padding: 14px 16px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 20px;
  border: 1px solid rgba(0,0,0,.07);
  border-radius: 16px;
  background: #faf7f0;
  color: #4b4b4b;
  font-size: .82rem;
  font-weight: 800;
}
.vision-legend span { display: inline-flex; align-items: center; gap: 7px; }
.legend-dot { width: 11px; height: 11px; border-radius: 50%; flex: 0 0 auto; }
.legend-dot--clear { background: #e7c35d; }
.legend-dot--transition { background: linear-gradient(135deg, #d09a24, #f5d97e); }
.legend-dot--peripheral { background: repeating-linear-gradient(135deg, #777 0 2px, #292929 2px 4px); }

.corridor-compare { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; margin-top: 28px; }
.corridor-lens {
  position: relative;
  isolation: isolate;
  width: min(100%, 220px);
  aspect-ratio: .79;
  margin: 4px auto 22px;
  overflow: hidden;
  border: 3px solid #d9aa38;
  border-radius: 46% 46% 42% 42% / 35% 35% 48% 48%;
  background:
    radial-gradient(ellipse at 50% 15%, rgba(244,216,126,.82) 0 25%, transparent 26%),
    radial-gradient(ellipse at 50% 88%, rgba(244,216,126,.82) 0 21%, transparent 22%),
    repeating-linear-gradient(135deg, rgba(255,255,255,.04) 0 6px, transparent 6px 12px),
    #111;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.12), 0 24px 40px rgba(0,0,0,.32);
}
.corridor-point {
  position: absolute;
  z-index: 5;
  left: 50%;
  transform: translateX(-50%);
  color: #111;
  font-size: .72rem;
  font-weight: 950;
}
.corridor-point--far { top: 13%; }
.corridor-point--near { bottom: 11%; }
.corridor-track {
  position: absolute;
  z-index: 4;
  left: 50%;
  width: 36%;
  transform: translateX(-50%);
  clip-path: polygon(28% 0, 72% 0, 100% 100%, 0 100%);
  background: linear-gradient(180deg, #d9aa38, #f7df98 52%, #bf8b1d);
  filter: drop-shadow(0 0 10px rgba(243,211,123,.25));
}
.corridor-track i { position: absolute; left: 50%; top: 9%; bottom: 9%; border-left: 2px dashed rgba(10,10,10,.42); }
.corridor-lens--short .corridor-track { top: 34%; height: 35%; }
.corridor-lens--long .corridor-track { top: 24%; height: 54%; width: 31%; }
.corridor-measure {
  position: absolute;
  z-index: 6;
  right: 6%;
  top: 50%;
  padding: 5px 7px;
  border: 1px solid rgba(243,211,123,.38);
  border-radius: 999px;
  background: rgba(5,5,5,.78);
  color: #f3d37b;
  font-size: .56rem;
  letter-spacing: .04em;
  transform: translateY(-50%) rotate(90deg);
}

.related-section { background: #0a0a0a; color: #fff; }
.related-section .section-head p { color: rgba(255,255,255,.70); }
.related-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 16px; }
.related-card { padding: 24px; border-radius: 22px; border: 1px solid rgba(255,255,255,.11); background: rgba(255,255,255,.06); transition: transform .3s ease,border-color .3s ease,background .3s ease; }
.related-card:hover { transform: translateY(-5px); border-color: rgba(243,211,123,.34); background: rgba(255,255,255,.09); }
.related-card h3 { color: var(--gold-2); }
.related-card p { color: rgba(255,255,255,.68); }
.related-card span { font-weight: 900; }

.knowledge-reveal { opacity: 0; transform: translate3d(0,24px,0); transition: opacity .66s ease,transform .72s cubic-bezier(.16,1,.3,1); transition-delay: var(--knowledge-delay,0ms); }
.knowledge-reveal.is-visible { opacity: 1; transform: translate3d(0,0,0); }

@media (max-width: 1100px) {
  .knowledge-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .article-layout { grid-template-columns: minmax(0,1fr) 270px; gap: 34px; }
}
@media (max-width: 980px) {
  .header-grid { grid-template-columns: 1fr auto auto; }
  .nav-toggle { display: grid; }
  .main-nav {
    position: absolute;
    z-index: 40;
    left: 16px;
    right: 16px;
    top: calc(100% + 8px);
    padding: 18px;
    display: grid;
    gap: 4px;
    border: 1px solid rgba(243,211,123,.25);
    border-radius: 22px;
    background: rgba(5,5,5,.98);
    box-shadow: 0 24px 70px rgba(0,0,0,.38);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px) scale(.98);
    transition: opacity .25s ease,transform .25s ease,visibility .25s;
  }
  .main-nav.is-open { opacity: 1; visibility: visible; transform: translateY(0) scale(1); }
  .main-nav a { padding: 11px 12px; border-radius: 12px; }
  .main-nav a:hover { background: rgba(255,255,255,.06); }
  .knowledge-hero-grid, .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; grid-template-columns: repeat(2,minmax(0,1fr)); }
  .page-index { grid-column: 1 / -1; }
  .knowledge-strip-grid, .related-grid { grid-template-columns: 1fr; }
  .vision-map-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .vision-map-card:last-child { grid-column: 1 / -1; }
  .vision-map-card:last-child .lens-map { width: min(50%, 210px); }
  .faq-results-grid { grid-template-columns: 1fr; }
  .faq-hub-layout { grid-template-columns: 1fr; }
  .faq-hub-sidebar { position: static; grid-template-columns: minmax(0,1.3fr) minmax(240px,.7fr); }
  .faq-hub-nav { display: flex; flex-wrap: wrap; align-items: center; gap: 7px 18px; }
  .faq-hub-nav > span { width: 100%; margin-bottom: 2px; }
  .faq-hub-nav a { padding: 8px 0; border-bottom: 0; }
  .faq-knowledge-principles { grid-template-columns: 1fr; }
  .lens-type-caption-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .lens-type-caption-grid > div:nth-child(2) { border-right: 0; }
  .lens-type-caption-grid > div:nth-child(-n+2) { border-bottom: 1px solid rgba(255,255,255,.1); }
  .refractive-index-scale { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .treatment-summary-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
}
@media (max-width: 640px) {
  .header-grid { grid-template-columns: 1fr auto; gap: 12px; }
  .header-grid > .btn-small { display: none; }
  .knowledge-hero { padding: 68px 0 62px; }
  .knowledge-hero h1 { font-size: clamp(2.45rem,13vw,4rem); }
  .knowledge-search { grid-template-columns: 1fr; margin-top: -22px; padding: 17px; }
  .knowledge-search-count { white-space: normal; }
  .knowledge-grid, .content-grid, .article-sidebar { grid-template-columns: 1fr; }
  .knowledge-card { min-height: 245px; }
  .knowledge-page .section { padding: 68px 0; }
  .article-content > section { padding-bottom: 38px; margin-bottom: 38px; }
  .vision-map-grid, .corridor-compare { grid-template-columns: 1fr; }
  .vision-map-card:last-child { grid-column: auto; }
  .vision-map-card:last-child .lens-map { width: min(100%, 210px); }
  .vision-map-card, .corridor-card { padding: 18px; }
  .faq-search-section { margin-top: -24px; background: linear-gradient(180deg,transparent 0 24px,#fffaf0 24px 100%); }
  .faq-search-box, .faq-search-results { padding: 18px; border-radius: 21px; }
  .faq-search-heading { grid-template-columns: 1fr; gap: 10px; }
  .faq-search-badge { justify-self: start; }
  .faq-search-field { grid-template-columns: 1fr; }
  .faq-search-clear { min-height: 44px; }
  .faq-results-head, .faq-search-fallback { align-items: flex-start; flex-direction: column; }
  .faq-search-fallback .btn { width: 100%; }
  .faq-compact-hero { padding-bottom: 82px; }
  .faq-hub-section { margin-top: -28px; padding-bottom: 68px; background: linear-gradient(180deg,transparent 0 28px,#fffaf0 28px 100%); }
  .faq-hub-layout { gap: 18px; }
  .faq-hub-sidebar { grid-template-columns: 1fr; }
  .faq-hub-nav { display: block; }
  .faq-hub-nav a { padding: 10px 0; border-bottom: 1px solid rgba(0,0,0,.07); }
  .faq-featured, .faq-guides { padding: 19px; border-radius: 22px; }
  .faq-featured-grid, .faq-guide-grid { grid-template-columns: 1fr; }
  .faq-all-link { align-items: flex-start; flex-direction: column; }
  .faq-guide-card:last-child:nth-child(odd) { grid-column: auto; }
  .faq-guide-card { min-height: 190px; }
  .digital-lens-explain-grid, .lens-material-grid, .lens-source-links { grid-template-columns: 1fr; }
  .lens-material-card:last-child:nth-child(odd) { grid-column: auto; }
  .lens-education-figure { border-radius: 18px; }
  .lens-education-figure > img { min-height: 0; aspect-ratio: auto; object-fit: contain; }
  .lens-type-caption-grid { grid-template-columns: 1fr; }
  .lens-type-caption-grid > div { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.1); }
  .lens-type-caption-grid > div:last-child { border-bottom: 0; }
  .treatment-summary-grid, .treatment-visual-grid { grid-template-columns: 1fr; }
  .treatment-summary-grid { gap: 7px; }
  .treatment-summary-grid span { min-height: 42px; }
  .treatment-card { border-radius: 19px; }
  .treatment-card-body { padding: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  .knowledge-reveal { opacity: 1; transform: none; transition: none; }
}