:root {
  color-scheme: light;
  font-family: Georgia, 'Times New Roman', serif;
  color: #123544;
  background: #e8f7fb;
  --ink: #123544;
  --muted: #587783;
  --paper: #e8f7fb;
  --white: #f8fdff;
  --blue: #126b88;
  --orange: #0a9bb5;
  --line: #b9dce5;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  line-height: 1.6;
  background: var(--paper);
}

a {
  color: inherit;
}

img,
svg,
video {
  max-width: 100%;
}

.site-header,
.site-footer,
main {
  width: min(100% - 3rem, 1200px);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
}

.site-logo {
  color: var(--ink);
  font-family: Arial, sans-serif;
  font-size: 1rem;
  letter-spacing: 0.12em;
  font-weight: 700;
  text-decoration: none;
}

.site-logo span { color: var(--orange); }

nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: Arial, sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

nav a:hover,
nav a:focus-visible,
nav a.active {
  color: var(--orange);
}

.page-intro {
  padding: 5rem 0 4rem;
  border-bottom: 1px solid var(--line);
}

.page-intro h1 {
  max-width: 11ch;
  margin: 0;
  font-size: clamp(3rem, 8vw, 6rem);
}

.page-intro p:last-child {
  max-width: 38rem;
  color: var(--muted);
  font-family: Arial, sans-serif;
  font-size: 1.05rem;
}

.catalog-section,
.details-section {
  padding: 4rem 0 6rem;
}

.catalog-section h2,
.details-section h2 {
  margin-top: 0;
  font-size: 2rem;
  font-weight: 400;
}

.catalog-group {
  margin-top: 3rem;
}

.category-widgets {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: 2rem;
  background: var(--line);
  border: 1px solid var(--line);
}

.category-widget {
  display: flex;
  aspect-ratio: 1 / 1;
  flex-direction: column;
  align-items: flex-start;
  padding: 1.25rem;
  border: 0;
  color: var(--ink);
  background: var(--white);
  cursor: pointer;
  font-family: Georgia, 'Times New Roman', serif;
  text-align: left;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.category-widget:hover,
.category-widget:focus-visible,
.category-widget.active {
  position: relative;
  z-index: 1;
  color: var(--white);
  background: var(--blue);
  transform: translateY(-0.3rem);
}

.category-widget .card-number,
.category-widget > span:last-child {
  font-family: Arial, sans-serif;
}

.category-icon {
  margin-top: 2.5rem;
  color: var(--orange);
  font-family: Arial, sans-serif;
  font-size: 2rem;
}

.category-widget strong {
  margin: 0.7rem 0;
  font-size: 1.15rem;
  font-weight: 400;
}

.category-widget > span:last-child {
  margin-top: auto;
  color: var(--orange);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
}

.catalog-product-panel {
  margin-top: 2rem;
  padding: 0 1.5rem 1.5rem;
  border: 1px solid var(--line);
  background: rgba(248, 253, 255, 0.65);
}

.catalog-product-panel[hidden] {
  display: none;
}

.catalog-group[hidden] {
  display: none;
}

.catalog-group-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--line);
}

.catalog-group-heading h3 {
  margin: 0 0 0.75rem;
  font-size: 1.5rem;
  font-weight: 400;
}

.catalog-group-heading span {
  color: var(--orange);
  font-family: Arial, sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
}

.catalog-products {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1rem;
}

.catalog-product {
  padding: 1rem;
  border: 1px solid var(--line);
  background: var(--white);
}

.photo-placeholder {
  display: grid;
  place-items: center;
  aspect-ratio: 4 / 3;
  color: var(--muted);
  background: #ccebf2;
  font-family: Arial, sans-serif;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.catalog-product h4 {
  margin: 1rem 0 0.25rem;
  font-size: 1.1rem;
  font-weight: 400;
}

.catalog-product p {
  margin: 0;
  color: var(--muted);
  font-family: Arial, sans-serif;
  font-size: 0.8rem;
}

.details-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.detail-block {
  min-height: 13rem;
  padding: 1.5rem;
  background: var(--white);
}

.detail-block h3 {
  margin-top: 0;
  color: var(--blue);
  font-size: 1.25rem;
  font-weight: 400;
}

.detail-block p,
.detail-block address {
  color: var(--muted);
  font-family: Arial, sans-serif;
  font-size: 0.9rem;
  font-style: normal;
}

.detail-block a {
  color: var(--ink);
}

.about-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 5rem;
  padding: 5rem 0 6rem;
}

.about-layout h2 {
  margin-top: 0;
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 400;
}

.about-copy {
  color: var(--muted);
  font-family: Arial, sans-serif;
}

.about-copy p:first-child {
  margin-top: 0;
  color: var(--ink);
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 1.3rem;
}

.about-points {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin-top: 2rem;
  background: var(--line);
}

.about-point {
  padding: 1.25rem;
  background: var(--white);
}

.about-point strong {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--orange);
  font-family: Arial, sans-serif;
  font-size: 0.75rem;
  text-transform: uppercase;
}

.about-point span {
  color: var(--muted);
  font-family: Arial, sans-serif;
  font-size: 0.85rem;
}

nav a {
  text-decoration: none;
}

.nav-cta { color: var(--orange); }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(15rem, 0.7fr);
  gap: 4rem;
  align-items: end;
  min-height: 34rem;
  padding: 6rem 0 7rem;
  background: radial-gradient(circle at 87% 35%, rgba(10, 155, 181, 0.2), transparent 31%), radial-gradient(circle at 84% 84%, rgba(18, 107, 136, 0.16), transparent 24%);
}

.eyebrow {
  color: var(--orange);
  font-family: Arial, sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2 {
  line-height: 1.15;
  font-weight: 400;
}

h1 {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(2.5rem, 7vw, 5.5rem);
}

.hero-copy {
  max-width: 36rem;
  font-size: 1.15rem;
  color: var(--muted);
}

.hero-actions { display: flex; align-items: center; gap: 1.5rem; margin-top: 2rem; }

.button {
  display: inline-block;
  padding: 0.7rem 1rem;
  color: var(--white);
  background: var(--blue);
  font-family: Arial, sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  text-transform: uppercase;
}

.button:focus-visible,
.text-link:focus-visible,
nav a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid #73d5e5;
  outline-offset: 3px;
}

.button span, .card-link { color: var(--orange); }
.text-link { font-family: Arial, sans-serif; font-size: 0.85rem; font-weight: 700; }
.hero-note { border-left: 2px solid var(--orange); padding-left: 1.25rem; }
.note-mark { color: var(--orange); font-family: Arial, sans-serif; font-size: 2rem; line-height: 1; }
.hero-note p { margin: 0.4rem 0; font-size: 1.15rem; }
.hero-note small { display: block; color: var(--muted); font-family: Arial, sans-serif; font-size: 0.8rem; line-height: 1.5; }

.content-section {
  padding: 5rem 0;
  border-top: 1px solid var(--line);
}

.section-heading { display: flex; justify-content: space-between; align-items: end; margin-bottom: 2rem; }
.section-heading h2, .buyer-section h2, .assistant-section h2, .contact-section h2 { max-width: 13ch; margin: 0; font-size: clamp(2rem, 4vw, 3.5rem); }
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.product-card { display: flex; flex-direction: column; min-height: 20rem; padding: 1.5rem; color: var(--ink); background: var(--white); text-decoration: none; transition: transform 180ms ease, background 180ms ease; }
.product-card:hover, .product-card:focus-visible { position: relative; z-index: 1; background: #d8f0f5; transform: translateY(-0.35rem); }
.product-card-featured { background: var(--blue); color: var(--white); }
.card-number { font-family: Arial, sans-serif; color: var(--orange); font-size: 0.75rem; font-weight: 700; }
.product-icon { margin-top: 3rem; color: var(--orange); font-family: Arial, sans-serif; font-size: 2rem; }
.product-card h3 { margin: 0.8rem 0 0.4rem; font-size: 1.35rem; font-weight: 400; }
.product-card p { margin: 0; color: var(--muted); font-family: Arial, sans-serif; font-size: 0.82rem; line-height: 1.5; }
.product-card-featured p { color: #c1e3eb; }
.card-link { margin-top: auto; font-family: Arial, sans-serif; font-size: 0.75rem; font-weight: 700; text-transform: uppercase; }
.buyer-section, .assistant-section { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; padding: 6rem 0; border-top: 1px solid var(--line); }
.buyer-copy { max-width: 30rem; color: var(--muted); font-family: Arial, sans-serif; }
.buyer-copy ul { padding-left: 1.2rem; color: var(--ink); }
.buyer-copy li { margin: 0.7rem 0; }
.assistant-section { align-items: start; }
.assistant-intro > p:last-child { max-width: 25rem; color: var(--muted); font-family: Arial, sans-serif; }
.chat-panel { overflow: hidden; border: 1px solid var(--line); background: var(--white); font-family: Arial, sans-serif; }
.chat-header { display: flex; align-items: center; gap: 0.5rem; padding: 1rem 1.2rem; border-bottom: 1px solid var(--line); font-size: 0.78rem; font-weight: 700; }
.status-dot { width: 0.5rem; height: 0.5rem; border-radius: 50%; background: #3f9a6c; }
.chat-status { margin-left: auto; color: var(--muted); font-size: 0.68rem; font-weight: 400; }
.chat-messages { display: flex; flex-direction: column; gap: 0.75rem; min-height: 10rem; max-height: 18rem; padding: 1.2rem; overflow-y: auto; }
.message { max-width: 90%; padding: 0.8rem 1rem; font-size: 0.82rem; line-height: 1.5; }
.message-agent { align-self: flex-start; color: var(--ink); background: #d9f0f5; }
.message-user { align-self: flex-end; color: var(--white); background: var(--blue); }
.quick-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; padding: 0 1.2rem 1rem; }
.quick-actions button { padding: 0.5rem 0.65rem; border: 1px solid var(--line); color: var(--blue); background: transparent; cursor: pointer; font-size: 0.72rem; }
.chat-form { display: flex; margin: 0.25rem 1.2rem 1.2rem; border: 1px solid var(--line); }
.chat-form input { min-width: 0; flex: 1; padding: 0.85rem; border: 0; background: transparent; font: inherit; font-size: 0.8rem; }
.chat-form button { width: 3rem; border: 0; color: var(--white); background: var(--orange); cursor: pointer; font-size: 1.2rem; }
.contact-section { display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding: 4rem 0; border-top: 1px solid var(--line); }
.button-light { color: var(--ink); background: var(--orange); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

.site-footer {
  display: flex;
  justify-content: space-between;
  padding: 3rem 0;
  color: var(--muted);
  font-family: Arial, sans-serif;
  font-size: 0.75rem;
}

@media (max-width: 600px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.75rem;
  }

  .site-header, .site-footer, main { width: min(100% - 2rem, 1200px); }

  nav { width: 100%; flex-wrap: wrap; gap: 0.65rem 1rem; }

  .page-intro { padding: 4rem 0 3rem; }
  .catalog-products, .details-grid, .about-layout { grid-template-columns: 1fr; }
  .category-widgets { grid-template-columns: repeat(2, 1fr); }
  .about-layout { gap: 2rem; padding: 4rem 0; }
  .catalog-section, .details-section { padding: 3rem 0 4rem; }

  .hero {
    display: block;
    min-height: auto;
    padding: 4rem 0;
  }

  .hero-note { margin-top: 3rem; }
  .section-heading, .contact-section, .site-footer { align-items: flex-start; flex-direction: column; }
  .product-grid { grid-template-columns: 1fr; }
  .product-card { min-height: 15rem; }
  .buyer-section, .assistant-section { display: block; padding: 4rem 0; }
  .buyer-copy, .assistant-intro { margin-top: 2rem; }
  .chat-panel { margin-top: 2rem; }
  .contact-section .button { margin-top: 1rem; }

  .catalog-product-panel { padding: 0 1rem 1rem; }
  .catalog-group-heading { align-items: flex-start; flex-direction: column; gap: 0; }
  .catalog-group-heading h3 { margin-bottom: 0.25rem; }
  .chat-header { padding: 0.85rem; }
  .chat-messages { padding: 0.85rem; }
  .quick-actions { padding: 0 0.85rem 0.85rem; }
  .chat-form { margin: 0.25rem 0.85rem 0.85rem; }
}

@media (max-width: 400px) {
  .category-widgets { grid-template-columns: 1fr; }
  .category-widget { aspect-ratio: auto; min-height: 13rem; }
  .product-card { min-height: 14rem; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 1rem; }
  h1 { font-size: 2.8rem; }
  .about-points { grid-template-columns: 1fr; }
}