:root {
  --color-ink: #14213d;
  --color-text: #334155;
  --color-muted: #64748b;
  --color-line: #dbe3ee;
  --color-soft: #f6f8fb;
  --color-white: #ffffff;
  --color-accent: #0f766e;
  --color-accent-dark: #115e59;
  --color-gold: #d99b2b;
  --shadow: 0 18px 45px rgba(20, 33, 61, 0.08);
  --radius: 8px;
  --max-width: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.6;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  padding: 0 32px;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--color-line);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--color-ink);
  font-weight: 800;
}

.brand-logo {
  width: 42px;
  height: 42px;
  object-fit: contain;
  border-radius: var(--radius);
}

.brand-text {
  font-size: 1.06rem;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1.1;
}

.brand-domain {
  color: var(--color-muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  padding: 10px 14px;
  color: var(--color-muted);
  font-weight: 600;
  border-radius: var(--radius);
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-ink);
  background: var(--color-soft);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.nav-toggle span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: var(--color-ink);
}

.hero {
  position: relative;
  min-height: 610px;
  display: flex;
  align-items: center;
  background-image: url("../images/hero-lighting.svg");
  background-position: center;
  background-size: cover;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(10, 20, 34, 0.84), rgba(10, 20, 34, 0.55) 48%, rgba(10, 20, 34, 0.2));
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: 90px 24px 120px;
  color: var(--color-white);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--color-gold);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1,
.page-hero h1,
.section-heading h2,
.split-layout h2,
.contact-band h2,
.about-panel h2 {
  margin: 0;
  color: var(--color-ink);
  line-height: 1.1;
}

.hero h1 {
  max-width: 760px;
  color: var(--color-white);
  font-size: clamp(2.35rem, 5vw, 4.8rem);
  letter-spacing: 0;
}

.hero-subtitle {
  max-width: 610px;
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.18rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  font-weight: 800;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
}

.button-primary {
  color: var(--color-white);
  background: var(--color-accent);
}

.button-primary:hover {
  background: var(--color-accent-dark);
}

.button-secondary {
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.55);
}

.button-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 78px 24px;
}

.section-muted {
  max-width: none;
  background: var(--color-soft);
}

.section-muted > * {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

.section-heading {
  max-width: 700px;
  margin-bottom: 32px;
}

.section-heading h2,
.split-layout h2,
.contact-band h2,
.about-panel h2 {
  font-size: clamp(1.8rem, 3vw, 2.65rem);
}

.section-text,
.section-heading p:last-child,
.page-hero p {
  color: var(--color-muted);
}

.category-grid,
.application-grid,
.product-grid,
.process-grid {
  display: grid;
  gap: 18px;
}

.category-grid {
  grid-template-columns: repeat(3, 1fr);
}

.category-card {
  min-height: 210px;
  padding: 16px;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.category-card img {
  width: 100%;
  height: 145px;
  object-fit: cover;
  border-radius: var(--radius);
  background: var(--color-soft);
}

.category-card img[src$="1-2.png"],
.category-card img[src$="2-2.png"],
.category-card img[src$="3.jpg"],
.category-card img[src$="4.4.png"] {
  object-fit: contain;
  object-position: center;
  background: var(--color-white);
}

.category-card span {
  display: block;
  margin-top: 14px;
  color: var(--color-ink);
  font-weight: 800;
}

.application-grid {
  grid-template-columns: repeat(5, 1fr);
}

.application-card,
.feature-item,
.process-grid article,
.contact-card,
.inquiry-form {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.application-card {
  min-height: 220px;
  padding: 22px;
}

.application-card span,
.process-grid span {
  color: var(--color-accent);
  font-weight: 800;
}

.application-card h3,
.process-grid h3 {
  margin: 16px 0 8px;
  color: var(--color-ink);
}

.application-card p,
.process-grid p,
.feature-item span,
.about-panel p,
.contact-card p,
.form-note {
  margin: 0;
  color: var(--color-muted);
}

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

.feature-list {
  display: grid;
  gap: 12px;
}

.feature-item {
  padding: 18px;
}

.feature-item strong {
  display: block;
  margin-bottom: 4px;
  color: var(--color-ink);
}

.why-choose-us {
  position: relative;
  isolation: isolate;
  margin-top: 36px;
  margin-bottom: 84px;
  padding: 64px;
  overflow: hidden;
  color: var(--color-white);
  background:
    radial-gradient(circle at 8% 10%, rgba(217, 155, 43, 0.2), transparent 30%),
    linear-gradient(135deg, #0d1b33 0%, #14213d 58%, #123f47 100%);
  border-radius: 24px;
  box-shadow: 0 30px 70px rgba(20, 33, 61, 0.2);
}

.why-choose-us::after {
  position: absolute;
  right: -110px;
  bottom: -150px;
  z-index: -1;
  width: 360px;
  height: 360px;
  content: "";
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
  box-shadow: 0 0 0 42px rgba(255, 255, 255, 0.025), 0 0 0 84px rgba(255, 255, 255, 0.018);
}

.why-choose-us .split-layout {
  grid-template-columns: 0.82fr 1.18fr;
  gap: 64px;
  align-items: center;
}

.why-choose-us .eyebrow {
  display: inline-flex;
  padding: 7px 12px;
  color: #ffe0a3;
  background: rgba(217, 155, 43, 0.16);
  border: 1px solid rgba(255, 224, 163, 0.28);
  border-radius: 999px;
  letter-spacing: 0.12em;
}

.why-choose-us h2 {
  max-width: 520px;
  margin-top: 18px;
  color: var(--color-white);
  font-size: clamp(2.25rem, 4.2vw, 3.8rem);
  letter-spacing: -0.04em;
}

.why-choose-us .section-text {
  max-width: 500px;
  margin: 24px 0 0;
  color: #c9d5e6;
  font-size: 1.04rem;
  line-height: 1.8;
}

.why-choose-us .feature-list {
  gap: 14px;
  counter-reset: benefit;
}

.why-choose-us .feature-item {
  display: grid;
  grid-template-columns: 44px 1fr;
  column-gap: 16px;
  align-items: center;
  padding: 20px 22px;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 14px;
  box-shadow: 0 12px 30px rgba(5, 15, 31, 0.13);
  transition: transform 180ms ease, box-shadow 180ms ease;
  counter-increment: benefit;
}

.why-choose-us .feature-item::before {
  display: grid;
  grid-row: 1 / span 2;
  place-items: center;
  width: 44px;
  height: 44px;
  color: var(--color-white);
  font-size: 0.78rem;
  font-weight: 800;
  content: "0" counter(benefit);
  background: var(--color-accent);
  border-radius: 50%;
}

.why-choose-us .feature-item:hover {
  transform: translateX(6px);
  box-shadow: 0 16px 38px rgba(5, 15, 31, 0.2);
}

.why-choose-us .feature-item strong,
.why-choose-us .feature-item span {
  grid-column: 2;
}

.why-choose-us .feature-item strong {
  margin-bottom: 2px;
  font-size: 1.02rem;
}

.why-choose-us .feature-item span {
  font-size: 0.92rem;
  line-height: 1.55;
}

.contact-band {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
  align-items: center;
  max-width: var(--max-width);
  margin: 0 auto 78px;
  padding: 34px;
  color: var(--color-white);
  background: var(--color-ink);
  border-radius: var(--radius);
}

.contact-band h2 {
  color: var(--color-white);
}

.contact-band p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.76);
}

.contact-actions,
.contact-details {
  display: grid;
  gap: 12px;
}

.contact-link,
.contact-details a {
  display: block;
  padding: 13px 14px;
  color: var(--color-ink);
  font-weight: 800;
  background: var(--color-white);
  border-radius: var(--radius);
  overflow-wrap: anywhere;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 34px 32px;
  color: var(--color-muted);
  border-top: 1px solid var(--color-line);
}

.site-footer strong {
  color: var(--color-ink);
}

.site-footer p {
  margin: 4px 0 0;
}

.footer-domain {
  color: var(--color-accent);
  font-weight: 800;
}

.floating-whatsapp {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 30;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 18px;
  color: var(--color-white);
  font-weight: 800;
  background: #128c7e;
  border-radius: 999px;
  box-shadow: 0 14px 30px rgba(18, 140, 126, 0.28);
}

.page-hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 82px 24px 36px;
}

.page-hero h1 {
  max-width: 760px;
  font-size: clamp(2rem, 4vw, 3.5rem);
}

.page-hero p:last-child {
  max-width: 640px;
  margin-bottom: 0;
}

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

.edit-note {
  margin: 0 0 18px;
  color: var(--color-muted);
}

.product-card {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.product-card img {
  width: 100%;
  height: 100%;
  min-height: 330px;
  object-fit: cover;
  background: var(--color-soft);
}

.product-card#downlight img,
.product-card#spotlight img,
.product-card#linear-light img,
.product-card#lighting-accessories img {
  object-fit: contain;
  object-position: center;
  background: var(--color-white);
}

.product-body {
  padding: 22px;
}

.product-body h2 {
  margin: 0 0 14px;
  color: var(--color-ink);
  font-size: 1.35rem;
}

.product-body dl {
  display: grid;
  gap: 8px;
  margin: 0 0 14px;
}

.product-body dl div {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 10px;
  font-size: 0.91rem;
}

.product-body dt {
  color: var(--color-muted);
  font-weight: 700;
}

.product-body dd {
  margin: 0;
  color: var(--color-ink);
}

.product-body p {
  color: var(--color-muted);
}

.product-body a {
  color: var(--color-accent);
  font-weight: 800;
}

.product-inquiry-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 16px;
  color: var(--color-white);
  font-weight: 800;
  background: var(--color-accent);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.95rem;
}

.product-inquiry-btn:hover {
  background: var(--color-accent-dark);
}

.about-panel {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 34px;
  align-items: center;
  padding: 28px;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.about-panel img {
  width: 100%;
  min-height: 300px;
  object-fit: cover;
  border-radius: var(--radius);
}

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

.process-grid article {
  padding: 22px;
}

.contact-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 22px;
  align-items: start;
}

.contact-card,
.inquiry-form {
  padding: 24px;
  box-shadow: var(--shadow);
}

.contact-card h2,
.inquiry-form h2 {
  margin: 0 0 10px;
  color: var(--color-ink);
}

.contact-details {
  margin-top: 18px;
}

.contact-details a {
  border: 1px solid var(--color-line);
}

.inquiry-form {
  display: grid;
  gap: 14px;
}

.inquiry-form label {
  display: grid;
  gap: 7px;
  color: var(--color-ink);
  font-weight: 800;
}

.inquiry-form input,
.inquiry-form select,
.inquiry-form textarea {
  width: 100%;
  padding: 12px 13px;
  color: var(--color-text);
  font: inherit;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.inquiry-form textarea {
  resize: vertical;
}

.form-note {
  font-size: 0.9rem;
}

.button-catalog {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 32px;
  color: var(--color-white);
  background: var(--color-accent);
  border: none;
  font-size: 0.95rem;
}

.button-catalog:hover {
  background: var(--color-accent-dark);
}

.button-catalog svg {
  flex-shrink: 0;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(20, 33, 61, 0.75);
  backdrop-filter: blur(4px);
  animation: fadeIn 0.2s ease;
}

.modal-overlay.active {
  display: flex;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.modal-content {
  position: relative;
  width: 100%;
  max-width: 580px;
  max-height: 85vh;
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: 0 24px 60px rgba(20, 33, 61, 0.2);
  animation: slideUp 0.25s ease;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 24px;
  border-bottom: 1px solid var(--color-line);
}

.modal-header h2 {
  margin: 0;
  color: var(--color-ink);
  font-size: 1.35rem;
}

.modal-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  color: var(--color-muted);
  background: transparent;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.15s ease;
}

.modal-close:hover {
  color: var(--color-ink);
  background: var(--color-soft);
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
}

.catalog-intro {
  margin: 0 0 16px;
  color: var(--color-muted);
  font-size: 0.91rem;
}

.catalog-intro strong {
  color: var(--color-ink);
}

.catalog-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.catalog-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  color: var(--color-ink);
  font-weight: 600;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  transition: all 0.15s ease;
}

.catalog-item:hover {
  background: var(--color-soft);
  border-color: var(--color-accent);
  transform: translateX(4px);
}

.catalog-item svg {
  flex-shrink: 0;
  color: var(--color-accent);
}

.catalog-item span {
  flex: 1;
}

@media (max-width: 980px) {
  .category-grid,
  .application-grid,
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .split-layout,
  .contact-band,
  .about-panel,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .application-card {
    min-height: 180px;
  }

  .why-choose-us .split-layout {
    gap: 40px;
  }
}

@media (max-width: 720px) {
  .site-header {
    padding: 0 18px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 76px;
    right: 18px;
    left: 18px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    background: var(--color-white);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
  }

  .site-nav.open {
    display: flex;
  }

  .hero {
    min-height: 560px;
  }

  .hero-overlay {
    background: rgba(10, 20, 34, 0.76);
  }

  .hero-content {
    padding: 72px 20px 86px;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .section,
  .page-hero {
    padding-left: 18px;
    padding-right: 18px;
  }

  .section {
    padding-top: 56px;
    padding-bottom: 56px;
  }

  .why-choose-us {
    margin: 24px 18px 56px;
    padding: 42px 22px;
    border-radius: 18px;
  }

  .why-choose-us h2 {
    font-size: clamp(2rem, 11vw, 3rem);
  }

  .why-choose-us .feature-item {
    grid-template-columns: 38px 1fr;
    padding: 17px 16px;
  }

  .why-choose-us .feature-item::before {
    width: 38px;
    height: 38px;
  }

  .category-grid,
  .application-grid,
  .product-grid,
  .process-grid {
    grid-template-columns: 1fr;
  }

  .product-card {
    grid-template-columns: 1fr;
  }

  .product-card img {
    min-height: 230px;
  }

  .product-body dl div {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .contact-band {
    margin-left: 18px;
    margin-right: 18px;
    padding: 24px;
  }

  .site-footer {
    display: block;
    padding: 28px 18px 86px;
  }
}

@media (max-width: 420px) {
  .brand-text {
    font-size: 0.96rem;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .floating-whatsapp {
    right: 12px;
    left: 12px;
  }
}