:root {
  --ink: #111;
  --muted: #6b7280;
  --line: #e8e8e8;
  --light: #f6f7f9;
  --gold: #bfa37a;
  --gold-strong: #d8b46f;
  --radius: 24px;
  --shadow: 0 22px 55px rgba(0, 0, 0, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font-family: Manrope, Arial, sans-serif;
  letter-spacing: 0;
}

img,
svg {
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(100% - 32px, 1180px);
  margin: 0 auto;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  padding: 18px 0;
  transition: background 0.25s ease, box-shadow 0.25s ease, padding 0.25s ease;
}

.site-header.scrolled,
.site-header.menu-open {
  padding: 12px 0;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.07);
  backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
}

.brand img {
  width: auto;
  height: 40px;
}

.brand span span {
  color: var(--gold);
}

.desktop-nav {
  display: flex;
  gap: 30px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 800;
}

.desktop-nav a:hover,
.footer a:hover {
  color: var(--gold);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  gap: 8px;
  padding: 13px 24px;
  border: 2px solid transparent;
  border-radius: 999px;
  font-weight: 900;
  line-height: 1;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}

.btn-primary:hover {
  background: var(--gold);
  border-color: var(--gold);
}

.btn-secondary {
  background: #fff;
  border-color: #d1d5db;
  color: var(--ink);
}

.btn-secondary:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.btn-whatsapp {
  background: #25d366;
  border-color: #25d366;
  color: #fff;
}

.btn-whatsapp:hover {
  background: #128c7e;
  border-color: #128c7e;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 0;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}

.menu-toggle svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
}

.menu-toggle .icon-close,
.menu-toggle.active .icon-menu {
  display: none;
}

.menu-toggle.active .icon-close {
  display: block;
}

.mobile-nav {
  display: none;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 20px;
  font-size: clamp(2.55rem, 5.2vw, 4.25rem);
  line-height: 1.04;
  font-weight: 800;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.08;
  font-weight: 800;
}

.section {
  padding: 70px 0;
}

.section-heading {
  width: min(100%, 780px);
  margin: 0 auto 42px;
  text-align: center;
}

.section-heading p,
.lead {
  color: var(--muted);
  font-size: 1.05rem;
  font-weight: 650;
  line-height: 1.7;
}

.hero {
  padding: 112px 0 70px;
  background: linear-gradient(180deg, #f6f7f9 0%, #fff 74%);
}

.hero-container {
  width: min(100% - 32px, 1100px);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  width: min(100%, 860px);
  margin: 0 auto 34px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.08);
  text-align: center;
}

.hero-stats span {
  display: grid;
  gap: 2px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 750;
}

.hero-stats strong {
  color: var(--ink);
  font-size: 1.08rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: center;
  gap: 42px;
}

.hero-copy > p {
  color: var(--muted);
  font-size: 1.08rem;
  font-weight: 650;
  line-height: 1.7;
}

.hero-benefits,
.check-list {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 22px 0 0;
  color: var(--muted);
  font-weight: 800;
  list-style: none;
}

.hero-benefits li,
.check-list li {
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-benefits li::before,
.check-list li::before {
  content: "✓";
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
  border-radius: 999px;
  background: rgba(34, 197, 94, 0.12);
  color: #16a34a;
  font-size: 0.85rem;
  font-weight: 900;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.hero-actions.center {
  justify-content: center;
}

.hero-price {
  margin: 16px 0 0;
  font-size: 1.1rem;
  font-weight: 900;
}

.hero-photo,
.wide-image,
.materials-gallery figure,
.model-card,
.benefit-card,
.ideal-card,
.company-card,
.measure-copy {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
}

.hero-photo {
  width: 100%;
  min-height: 420px;
  border-radius: 28px;
  overflow: hidden;
  background: linear-gradient(180deg, #f5f5f5, #e8e8e8);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.14);
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-photo img {
  width: 100%;
  height: auto;
  max-height: 520px;
  object-fit: contain;
  object-position: center;
  display: block;
}

.section-dark {
  background: #111;
  color: #fff;
}

.section-dark .section-heading p,
.section-dark p {
  color: #c8c8c8;
}

.order-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.order-card {
  position: relative;
  min-height: 218px;
  padding: 28px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  background: #1c1c1c;
}

.order-card span {
  display: block;
  margin-bottom: 30px;
  color: var(--gold-strong);
  font-size: 4rem;
  font-weight: 900;
  line-height: 0.8;
}

.order-card h3 {
  color: #fff;
  font-size: 1.05rem;
}

.order-card p {
  margin-bottom: 0;
  color: #c8c8c8;
  font-size: 0.92rem;
  font-weight: 650;
  line-height: 1.65;
}

.benefit-grid,
.ideal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.benefit-card,
.ideal-card {
  padding: 28px;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.benefit-card:hover,
.ideal-card:hover,
.model-card:hover,
.company-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 30px 68px rgba(0, 0, 0, 0.14);
}

.benefit-card .benefit-icon {
  width: 62px;
  height: 62px;
  border-radius: 50%;
  background: #f1e8dc;
  color: #9b6b2f;
  display: grid;
  place-items: center;
  margin-bottom: 20px;
}

.benefit-card .benefit-icon svg {
  width: 30px;
  height: 30px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.ideal-card {
  padding: 30px;
  border-radius: 24px;
}

.ideal-card span {
  width: 62px;
  height: 62px;
  border-radius: 50%;
  background: #f1e8dc;
  color: #9b6b2f;
  display: grid;
  place-items: center;
  margin-bottom: 20px;
}

.ideal-card span svg {
  width: 30px;
  height: 30px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.benefit-card h3,
.ideal-card h3 {
  margin-bottom: 8px;
  font-size: 1.08rem;
}

.benefit-card p,
.ideal-card p,
.model-card p,
.company-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.93rem;
  font-weight: 650;
  line-height: 1.62;
}

.ideal-section,
.materials-section,
.measures-section {
  background: var(--light);
}

.models-section {
  background: linear-gradient(180deg, #fff 0%, #f4f1ec 100%);
}

.models-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.model-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  overflow: hidden;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.model-card img,
.company-card img {
  width: 100%;
  height: 240px;
  object-fit: contain;
  padding: 18px;
  background: linear-gradient(180deg, #f4f4f4, #dedede);
}

.model-card div {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 22px;
}

.model-card h3 {
  margin-bottom: 10px;
  font-size: 1.18rem;
}

.model-card p {
  flex: 1;
  margin-bottom: 20px;
}

.model-card .btn {
  width: 100%;
  min-height: 46px;
  padding-inline: 14px;
  font-size: 0.86rem;
}

.materials-layout,
.measures-layout {
  display: grid;
  grid-template-columns: 0.86fr 1.14fr;
  align-items: center;
  gap: 44px;
}

.materials-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.materials-gallery figure {
  margin: 0;
  overflow: hidden;
}

.materials-gallery img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: contain;
  padding: 20px;
  background: linear-gradient(180deg, #f4f4f4, #dedede);
}

.materials-gallery figcaption {
  padding: 14px 18px 18px;
  font-weight: 900;
  text-align: center;
}

.wide-image {
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: 22px;
  background: linear-gradient(180deg, #f4f4f4, #dedede);
}

.wide-image img {
  width: 100%;
  max-height: 520px;
  object-fit: contain;
}

.anatomy-section {
  background: #fff;
}

.anatomy-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 42px;
  align-items: center;
}

.anatomy-product {
  background: linear-gradient(180deg, #f4f4f4, #dedede);
  border-radius: 28px;
  padding: 28px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.12);
}

.anatomy-product img {
  width: 100%;
  height: auto;
  object-fit: contain;
  display: block;
}

.anatomy-points {
  display: grid;
  gap: 16px;
  margin: 28px 0;
}

.anatomy-points article {
  display: flex;
  gap: 14px;
  padding: 18px;
  border-radius: 18px;
  background: #fff;
  border: 1px solid #e8e8e8;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.06);
}

.anatomy-points span {
  width: 34px;
  height: 34px;
  min-width: 34px;
  border-radius: 50%;
  background: #111;
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 800;
}

.anatomy-points h3 {
  margin: 0 0 5px;
  font-size: 1rem;
}

.anatomy-points p {
  margin: 0;
  color: #6b7280;
  font-weight: 600;
  line-height: 1.5;
}

.measures-layout {
  grid-template-columns: 1.08fr 0.92fr;
}

.measure-copy {
  padding: 34px;
}

.measure-copy strong {
  color: var(--ink);
  font-size: 1.1em;
}

.company-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}

.company-card {
  overflow: hidden;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.company-card img {
  height: 190px;
}

.company-card div {
  padding: 20px;
}

.company-card h3 {
  margin-bottom: 8px;
  font-size: 1.02rem;
}

.section-cta {
  display: flex;
  justify-content: center;
  margin-top: 34px;
}

.narrow {
  width: min(100% - 32px, 840px);
}

.seo-text-section {
  background: #fff;
}

.seo-text-section p {
  color: #5f6878;
  font-weight: 600;
  line-height: 1.8;
  font-size: 1.05rem;
  margin-bottom: 18px;
}

.seo-text-section h2 {
  margin-top: 34px;
  margin-bottom: 12px;
  font-size: clamp(1.35rem, 2vw, 1.8rem);
}

.seo-text-section h2:first-child {
  margin-top: 0;
}

.seo-text-section .btn {
  margin-top: 10px;
}

.faq-section .faq-item {
  overflow: hidden;
  border: 1px solid rgba(191, 163, 122, 0.34);
  border-radius: 20px;
  background: #1c1c1c;
}

.faq-wrap {
  width: min(100% - 32px, 780px);
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item button {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 22px;
  border: 0;
  background: transparent;
  color: #fff;
  font: inherit;
  font-weight: 900;
  text-align: left;
  cursor: pointer;
}

.faq-item button span {
  color: var(--gold);
  font-size: 1.35rem;
  transition: transform 0.25s ease;
}

.faq-item.open button span {
  transform: rotate(180deg);
}

.faq-panel {
  max-height: 0;
  opacity: 0;
  transition: max-height 0.32s ease, opacity 0.22s ease;
}

.faq-item.open .faq-panel {
  max-height: 260px;
  opacity: 1;
}

.faq-panel p {
  margin: 0;
  padding: 0 22px 22px;
  color: #c8c8c8;
  font-size: 0.92rem;
  font-weight: 650;
  line-height: 1.7;
}

.final-cta {
  padding: 78px 0;
  color: #fff;
  text-align: center;
  background:
    linear-gradient(135deg, rgba(191, 163, 122, 0.35), rgba(17, 17, 17, 0) 46%),
    linear-gradient(180deg, #17120d, #111);
}

.final-cta .container {
  width: min(100% - 32px, 850px);
}

.final-cta h2 {
  color: #fff;
}

.final-cta p {
  color: #ddd;
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.65;
}

.final-cta .btn-primary {
  background: linear-gradient(135deg, #d8b46f, #b88b45);
  border-color: #d8b46f;
  color: #111;
  box-shadow: 0 14px 34px rgba(216, 180, 111, 0.28);
}

.category-links-section {
  background: #fff;
}

.category-link-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.category-link-card {
  display: block;
  padding: 24px;
  border: 1px solid #e8e8e8;
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.07);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.category-link-card:hover {
  transform: translateY(-5px);
  border-color: rgba(191, 163, 122, 0.6);
  box-shadow: 0 28px 60px rgba(0, 0, 0, 0.12);
}

.category-link-card h3 {
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.category-link-card p {
  margin: 0;
  color: #5f6878;
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.55;
}

.footer {
  padding: 64px 0 32px;
  background: #111;
  color: #fff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer-brand img {
  filter: brightness(0) invert(1);
  height: 48px;
}

.footer p,
.footer a,
.footer-bottom small {
  display: block;
  color: #9ca3af;
  font-size: 0.9rem;
  font-weight: 650;
  line-height: 1.65;
}

.footer h4 {
  margin: 0 0 14px;
}

.footer-bottom {
  margin-top: 42px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.whatsapp-float {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 999;
  padding: 14px 18px;
  border-radius: 50px;
  background: #25d366;
  color: #fff;
  font-weight: 900;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.whatsapp-float::before {
  content: "💬 ";
}

.whatsapp-float:hover {
  background: #128c7e;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s ease, transform 0.65s ease;
  transition-delay: var(--delay, 0ms);
}

.from-left {
  transform: translateX(-24px);
}

.from-right {
  transform: translateX(24px);
}

.reveal.in-view {
  opacity: 1;
  transform: translate(0, 0);
}

.delay-1 {
  --delay: 100ms;
}

.delay-2 {
  --delay: 200ms;
}

.delay-3 {
  --delay: 300ms;
}

@media (max-width: 980px) {
  .desktop-nav,
  .header-cta {
    display: none;
  }

  .menu-toggle {
    display: grid;
    place-items: center;
  }

  .mobile-nav {
    display: grid;
    max-height: 0;
    overflow: hidden;
    background: #fff;
    box-shadow: 0 18px 28px rgba(0, 0, 0, 0.08);
    transition: max-height 0.3s ease;
  }

  .mobile-nav.open {
    max-height: 330px;
  }

  .mobile-nav a {
    width: min(100% - 32px, 1180px);
    margin: 0 auto;
    padding: 14px 0;
    color: var(--muted);
    font-weight: 900;
  }

  .hero-grid,
  .anatomy-layout,
  .materials-layout,
  .measures-layout {
    grid-template-columns: 1fr;
  }

  .hero-photo {
    min-height: auto;
    padding: 12px;
  }

  .hero-photo img {
    max-height: none;
  }

  .hero-copy {
    text-align: center;
  }

  .hero-actions,
  .hero-benefits li {
    justify-content: center;
  }

  .order-grid,
  .models-grid,
  .benefit-grid,
  .ideal-grid,
  .category-link-grid,
  .company-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 680px) {
  .container,
  .faq-wrap {
    width: min(100% - 24px, 1180px);
  }

  .brand {
    font-size: 1.05rem;
  }

  .brand img {
    height: 34px;
  }

  .hero,
  .section,
  .final-cta {
    padding: 56px 0;
  }

  .hero {
    padding-top: 104px;
  }

  .hero-stats,
  .order-grid,
  .models-grid,
  .benefit-grid,
  .ideal-grid,
  .category-link-grid,
  .materials-gallery,
  .company-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

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

  .model-card img {
    height: 220px;
  }

  .footer {
    text-align: center;
  }

  .footer .brand {
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}