:root {
  --ink: #111315;
  --graphite: #1c2024;
  --steel: #30363d;
  --muted: #5d6670;
  --line: #d8dde2;
  --paper: #f7f5ef;
  --white: #ffffff;
  --cta: #f5c400;
  --cta-dark: #3b3100;
  --green: #1d6f57;
  --soft: #ece9df;
  --danger: #7b2d26;
  --max: 1160px;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 12px;
  z-index: 100;
  padding: 10px 14px;
  background: var(--cta);
  color: var(--ink);
}

.skip-link:focus {
  left: 12px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(17, 19, 21, 0.94);
  backdrop-filter: blur(14px);
  color: var(--white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.header-inner {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  gap: 0;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.05;
}

.brand span:first-child {
  font-size: 1.14rem;
}

.brand span:last-child {
  font-size: 0.72rem;
  color: #c6ccd2;
  font-weight: 600;
}

.nav-toggle {
  display: none;
  border: 1px solid rgba(255,255,255,0.2);
  background: transparent;
  color: var(--white);
  width: 42px;
  height: 42px;
  border-radius: 6px;
  font-size: 1.25rem;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.9rem;
  font-weight: 650;
}

.main-nav a {
  color: #eef1f2;
  text-decoration: none;
}

.main-nav a:hover {
  color: var(--cta);
}

.nav-cta,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 11px 16px;
  border-radius: 6px;
  font-weight: 800;
  text-decoration: none;
  line-height: 1.15;
  border: 1px solid transparent;
}

.nav-cta,
.btn.primary {
  background: var(--cta);
  color: var(--cta-dark);
  box-shadow: 0 10px 22px rgba(0,0,0,0.18);
}

.btn.secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.22);
}

.btn.dark {
  background: var(--ink);
  color: var(--white);
}

.hero {
  color: var(--white);
  background: var(--ink);
  min-height: 680px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, rgba(17,19,21,0.94) 0%, rgba(17,19,21,0.78) 40%, rgba(17,19,21,0.42) 72%, rgba(17,19,21,0.78) 100%), url("/assets/pead-hero-optimized.jpg");
  background-image: linear-gradient(90deg, rgba(17,19,21,0.94) 0%, rgba(17,19,21,0.78) 40%, rgba(17,19,21,0.42) 72%, rgba(17,19,21,0.78) 100%), var(--hero-image);
  background-size: cover;
  background-position: center;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 120px;
  background: linear-gradient(0deg, var(--paper), transparent);
}

.hero-inner,
.section-inner,
.footer-inner {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding: 92px 0 132px;
  max-width: 760px;
  margin-left: max(16px, calc((100vw - var(--max)) / 2));
}

.eyebrow,
.breadcrumb {
  color: var(--cta);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  font-weight: 850;
}

.breadcrumb {
  color: var(--muted);
  text-transform: none;
  letter-spacing: 0;
  margin-bottom: 18px;
}

.breadcrumb a {
  color: var(--green);
  font-weight: 800;
  text-decoration: none;
}

h1,
h2,
h3 {
  line-height: 1.12;
  letter-spacing: 0;
  margin: 0 0 16px;
}

h1 {
  font-size: clamp(2.35rem, 5vw, 4.8rem);
  max-width: 900px;
}

h2 {
  font-size: clamp(1.75rem, 3vw, 2.55rem);
}

h3 {
  font-size: 1.16rem;
}

p {
  margin: 0 0 16px;
}

.lead {
  font-size: clamp(1.08rem, 2vw, 1.35rem);
  color: #dce2e5;
  max-width: 720px;
}

.internal-hero .lead {
  color: #39414a;
}

.hero-actions,
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.proofs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-top: 34px;
  max-width: 980px;
}

.proofs span {
  padding: 12px 14px;
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.08);
  border-radius: 6px;
  color: #eef1f2;
  font-weight: 750;
}

main section {
  padding: 74px 0;
}

.section-dark {
  background: var(--graphite);
  color: var(--white);
}

.section-muted {
  background: var(--soft);
}

.section-kicker {
  color: var(--green);
  font-weight: 850;
  text-transform: uppercase;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}

.section-dark .section-kicker {
  color: var(--cta);
}

.section-head {
  max-width: 780px;
  margin-bottom: 32px;
}

.section-head p,
.muted {
  color: var(--muted);
}

.section-dark .section-head p,
.section-dark .muted {
  color: #c9d0d5;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card,
.technical-box,
.faq-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
}

.section-dark .card,
.section-dark .technical-box {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.14);
}

.card strong,
.technical-box strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.02rem;
}

.diameters {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
  margin: 26px 0;
}

.diameters span {
  display: flex;
  min-height: 92px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(0,0,0,0.18);
  border-radius: 8px;
  color: var(--cta);
  font-size: clamp(1.2rem, 2.6vw, 2rem);
  font-weight: 900;
}

.checklist {
  padding: 0;
  margin: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.checklist li {
  position: relative;
  padding-left: 28px;
}

.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.64em;
  width: 12px;
  height: 12px;
  border-radius: 3px;
  background: var(--cta);
  box-shadow: inset 0 0 0 3px rgba(0,0,0,0.14);
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 42px;
  align-items: start;
}

.article {
  font-size: 1.03rem;
}

.article h2 {
  margin-top: 42px;
}

.article h3 {
  margin-top: 28px;
}

.article ul {
  padding-left: 20px;
}

.side-panel {
  position: sticky;
  top: 94px;
  background: var(--graphite);
  color: var(--white);
  border-radius: 8px;
  padding: 22px;
}

.side-panel .btn {
  width: 100%;
  margin-top: 10px;
}

.internal-hero {
  padding: 54px 0 34px;
  background: linear-gradient(180deg, #f2efe5, var(--paper));
}

.compare {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.compare th,
.compare td {
  padding: 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.compare th {
  background: var(--graphite);
  color: var(--white);
}

.cta-band {
  background: var(--ink);
  color: var(--white);
  padding: 38px;
  border-radius: 8px;
  margin: 42px 0;
}

.cta-band p {
  color: #dce2e5;
}

.faq-list {
  display: grid;
  gap: 10px;
}

.faq-item {
  padding: 0;
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  padding: 18px 20px;
  font-weight: 850;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  float: right;
  font-size: 1.3rem;
  color: var(--green);
}

.faq-item[open] summary::after {
  content: "-";
}

.faq-item div {
  padding: 0 20px 18px;
  color: #3d454d;
}

.client-list {
  columns: 2;
  column-gap: 34px;
}

.client-list li {
  break-inside: avoid;
  margin-bottom: 8px;
}

.floating-whatsapp {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 60;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #1f8f62;
  color: var(--white);
  text-decoration: none;
  box-shadow: 0 14px 30px rgba(0,0,0,0.28);
  font-weight: 900;
}

.site-footer {
  background: #0d0f10;
  color: #d3d8dc;
  padding: 44px 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 30px;
}

.site-footer a {
  color: var(--white);
}

.footer-title {
  color: var(--white);
  font-weight: 900;
  margin-bottom: 10px;
}

@media (max-width: 920px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .main-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 72px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--ink);
    padding: 12px 16px 18px;
  }

  .main-nav.is-open {
    display: flex;
  }

  .main-nav a {
    padding: 12px 4px;
  }

  .nav-cta {
    margin-top: 8px;
  }

  .proofs,
  .grid,
  .grid.two,
  .grid.four,
  .article-layout,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .diameters {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero {
    min-height: auto;
  }

  .hero-inner {
    margin: 0 auto;
    padding: 76px 0 106px;
  }

  .side-panel {
    position: static;
  }
}

@media (max-width: 560px) {
  .header-inner,
  .hero-inner,
  .section-inner,
  .footer-inner {
    width: min(100% - 24px, var(--max));
  }

  main section {
    padding: 54px 0;
  }

  .hero-actions .btn,
  .cta-row .btn {
    width: 100%;
  }

  .diameters {
    grid-template-columns: 1fr;
  }

  .client-list {
    columns: 1;
  }

  .cta-band {
    padding: 24px;
  }
}