:root {
  --font-inter: "Inter", Arial, Helvetica, sans-serif;
  --font-montserrat: "Montserrat", Arial, sans-serif;
  --navy: #0b1f3a;
  --navy-soft: #132f52;
  --navy-deep: #061426;
  --steel: #647181;
  --steel-light: #e7edf3;
  --orange: #f47b20;
  --orange-dark: #d9600a;
  --orange-light: #ffb347;
  --blue: #2f5ce0;
  --blue-dark: #1c3fae;
  --teal: #0f8b7f;
  --teal-dark: #0b6b62;
  --white: #ffffff;
  --ink: #182333;
  --muted: #627082;
  --surface: #f6f8fb;
  --line: #d7e0ea;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

::selection {
  background: rgba(244, 123, 32, 0.28);
  color: var(--navy-deep);
}

body {
  margin: 0;
  background:
    linear-gradient(90deg, rgba(11, 31, 58, 0.025) 1px, transparent 1px),
    linear-gradient(180deg, rgba(11, 31, 58, 0.02) 1px, transparent 1px),
    var(--white);
  background-size: 44px 44px;
  color: var(--ink);
  font-family: var(--font-inter), Arial, Helvetica, sans-serif;
}

body::before {
  background: linear-gradient(90deg, transparent, rgba(244, 123, 32, 0.08), transparent);
  content: "";
  height: 3px;
  left: 0;
  position: fixed;
  right: 0;
  top: 0;
  z-index: 50;
}

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

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

.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--line);
  padding: 0 clamp(18px, 5vw, 72px);
  position: relative;
  z-index: 2;
  backdrop-filter: blur(14px);
  box-shadow: 0 16px 42px rgba(6, 20, 38, 0.09);
}

.header-top {
  align-items: center;
  background:
    linear-gradient(135deg, rgba(244, 123, 32, 0.08) 0 18%, transparent 18%),
    linear-gradient(180deg, #f8fafc, #e7edf3);
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: center;
  margin: 0 calc(clamp(18px, 5vw, 72px) * -1);
  min-height: 146px;
  padding: 24px clamp(18px, 5vw, 72px);
  position: relative;
}

.header-top::after {
  background: linear-gradient(90deg, transparent, var(--orange), transparent);
  bottom: 0;
  content: "";
  height: 3px;
  left: 18%;
  position: absolute;
  right: 18%;
}

.header-nav {
  align-items: center;
  background: var(--navy);
  border-radius: 0 0 12px 12px;
  display: flex;
  gap: 22px;
  justify-content: center;
  min-height: 72px;
  margin: 0 calc(clamp(18px, 5vw, 72px) * -1);
  padding: 0 clamp(18px, 5vw, 72px);
  position: relative;
}

.brand {
  align-items: center;
  display: inline-flex;
  gap: 18px;
  justify-content: center;
  min-width: 0;
  padding: 12px 18px;
  text-align: center;
}

.brand-mark {
  align-items: center;
  background: linear-gradient(145deg, var(--navy), var(--navy-deep));
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  box-sizing: border-box;
  color: var(--white);
  display: inline-flex;
  flex: 0 0 84px;
  font-family: var(--font-montserrat), Arial, sans-serif;
  font-size: 1.55rem;
  font-weight: 900;
  height: 84px;
  justify-content: center;
  letter-spacing: 0;
  position: relative;
  width: 84px;
}

.brand-mark::after {
  background: var(--orange);
  bottom: 14px;
  content: "";
  height: 5px;
  left: 18px;
  position: absolute;
  width: 46px;
}

@media (min-width: 821px) {
  .brand-mark {
    left: clamp(18px, 5vw, 72px);
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
  }
}

.brand strong,
.brand small,
.brand em {
  display: block;
}

.brand strong {
  color: var(--navy-deep);
  font-family: var(--font-montserrat), Arial, sans-serif;
  font-size: clamp(2.4rem, 4.2vw, 4.25rem);
  line-height: 1;
}

.brand small {
  color: var(--steel);
  font-size: clamp(1rem, 1.3vw, 1.25rem);
  font-weight: 700;
  margin-top: 8px;
}

.brand em {
  color: var(--orange-dark);
  font-size: clamp(0.82rem, 1vw, 0.98rem);
  font-style: normal;
  font-weight: 900;
  line-height: 1.35;
  margin-top: 8px;
  max-width: 720px;
}

.site-header .brand {
  justify-self: center;
}

nav {
  align-items: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  padding: 8px;
}

nav a {
  color: #e8eef5;
  font-size: 0.92rem;
  font-weight: 700;
  border-radius: 999px;
  padding: 10px 14px;
  transition: background 160ms ease, color 160ms ease;
}

nav a:hover,
nav a:focus-visible {
  background: rgba(255, 255, 255, 0.14);
  box-shadow: 0 8px 20px rgba(6, 20, 38, 0.08);
  color: var(--white);
}

.menu-button {
  align-items: center;
  background: var(--navy);
  border: 0;
  border-radius: 6px;
  cursor: pointer;
  display: none;
  flex-direction: column;
  gap: 5px;
  height: 44px;
  justify-content: center;
  padding: 0;
  width: 48px;
}

.menu-button span {
  background: var(--white);
  border-radius: 999px;
  display: block;
  height: 2px;
  width: 22px;
}

.menu-button:focus-visible {
  outline: 3px solid rgba(244, 123, 32, 0.28);
  outline-offset: 3px;
}

.quote-button,
.primary-button,
.secondary-button {
  align-items: center;
  border-radius: 10px;
  display: inline-flex;
  font-weight: 800;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  transition: transform 200ms cubic-bezier(0.16, 1, 0.3, 1), box-shadow 200ms ease, background 200ms ease, border-color 200ms ease;
  position: relative;
  overflow: hidden;
}

.quote-button::after,
.primary-button::after,
.secondary-button::after {
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.34), transparent);
  content: "";
  height: 100%;
  left: -80%;
  position: absolute;
  top: 0;
  transform: skewX(-18deg);
  transition: left 420ms ease;
  width: 54%;
}

.header-nav .quote-button {
  min-width: 168px;
  position: absolute;
  right: 0;
}

.quote-button,
.primary-button {
  background: linear-gradient(135deg, var(--orange), var(--orange-dark));
  color: var(--white);
  box-shadow: 0 12px 28px rgba(244, 123, 32, 0.28);
}

.secondary-button {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.45);
  color: var(--white);
}

.quote-button:hover,
.primary-button:hover,
.quote-button:focus-visible,
.primary-button:focus-visible {
  box-shadow: 0 18px 40px rgba(244, 123, 32, 0.4);
  transform: translateY(-3px);
}

.secondary-button:hover,
.secondary-button:focus-visible {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.7);
  transform: translateY(-3px);
}

.quote-button:hover::after,
.primary-button:hover::after,
.secondary-button:hover::after,
.quote-button:focus-visible::after,
.primary-button:focus-visible::after,
.secondary-button:focus-visible::after {
  left: 125%;
}

.hero {
  background:
    linear-gradient(120deg, rgba(4, 16, 31, 0.98) 0%, rgba(4, 16, 31, 0.9) 35%, rgba(7, 23, 43, 0.44) 58%, rgba(6, 20, 38, 0.08) 100%),
    url("public/hero-premium-ductwork.png") center center/cover;
  color: var(--white);
  display: grid;
  gap: clamp(28px, 5vw, 68px);
  grid-template-columns: minmax(0, 760px) 1fr;
  min-height: clamp(520px, 62vh, 720px);
  padding: clamp(56px, 7vw, 88px) clamp(18px, 5vw, 72px);
  overflow: hidden;
  position: relative;
}

.hero::after {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0 12%, transparent 12% 25%, rgba(255, 255, 255, 0.06) 25% 37%, transparent 37%),
    linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.06), transparent);
  content: "";
  inset: 0;
  opacity: 0.48;
  pointer-events: none;
  position: absolute;
}

.hero-content {
  align-self: center;
  animation: riseIn 800ms cubic-bezier(0.16, 1, 0.3, 1) both;
  background: linear-gradient(180deg, rgba(6, 20, 38, 0.7), rgba(6, 20, 38, 0.42));
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 20px;
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.32), 0 0 140px -30px rgba(244, 123, 32, 0.45);
  max-width: 690px;
  padding: clamp(28px, 4vw, 46px);
  position: relative;
  text-align: center;
  z-index: 1;
  backdrop-filter: blur(10px);
}

.hero-content::before {
  background: linear-gradient(90deg, transparent, var(--orange), var(--orange-light), var(--orange), transparent);
  border-radius: 999px;
  content: "";
  height: 4px;
  left: 50%;
  position: absolute;
  top: -1px;
  transform: translateX(-50%);
  width: 140px;
}

.hero-content > * {
  animation: riseIn 700ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

.hero-content > *:nth-child(1) { animation-delay: 120ms; }
.hero-content > *:nth-child(2) { animation-delay: 200ms; }
.hero-content > *:nth-child(3) { animation-delay: 280ms; }
.hero-content > *:nth-child(4) { animation-delay: 360ms; }
.hero-content > *:nth-child(5) { animation-delay: 440ms; }
.hero-content > *:nth-child(6) { animation-delay: 520ms; }
.hero-content > *:nth-child(7) { animation-delay: 600ms; }

.eyebrow {
  align-items: center;
  color: var(--orange);
  display: inline-flex;
  font-size: 0.78rem;
  font-weight: 900;
  gap: 10px;
  letter-spacing: 0.16em;
  margin: 0 0 14px;
  text-transform: uppercase;
}

.eyebrow::before {
  background: linear-gradient(90deg, var(--orange), var(--orange-light));
  border-radius: 999px;
  content: "";
  display: inline-block;
  height: 2px;
  width: 26px;
}

h1,
h2,
h3 {
  font-family: var(--font-montserrat), Arial, sans-serif;
  letter-spacing: -0.02em;
  line-height: 1.08;
  margin: 0;
}

h1 {
  font-size: clamp(2.45rem, 5vw, 4.8rem);
  max-width: 720px;
}

h2 {
  color: var(--navy);
  font-size: clamp(1.75rem, 3.2vw, 3.3rem);
}

h3 {
  font-size: 1.1rem;
}

.hero p:not(.eyebrow) {
  color: #dce6f1;
  font-size: clamp(1rem, 1.5vw, 1.16rem);
  line-height: 1.7;
  margin: 24px 0 0;
  margin-left: auto;
  margin-right: auto;
  max-width: 640px;
}

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

.hero-specialties {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 24px;
  max-width: 720px;
}

.hero-specialties span {
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 6px;
  color: var(--navy);
  font-size: 0.84rem;
  font-weight: 900;
  padding: 9px 11px;
  box-shadow: 0 10px 24px rgba(6, 20, 38, 0.16);
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 24px;
}

.hero-points span {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  color: #eef5fb;
  font-size: 0.86rem;
  font-weight: 800;
  padding: 9px 13px;
}

.proprietor {
  align-items: center;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-left: 5px solid var(--orange);
  border-radius: 14px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.14);
  color: #f3f7fb;
  display: flex;
  flex-wrap: wrap;
  font-weight: 800;
  gap: 8px 16px;
  margin-top: 34px;
  margin-left: auto;
  margin-right: auto;
  max-width: 560px;
  padding: 18px 20px;
}

.proprietor span {
  color: #b7c8d9;
  font-size: 0.78rem;
  text-transform: uppercase;
}

.proprietor strong {
  color: var(--white);
  font-family: var(--font-montserrat), Arial, sans-serif;
}

.proprietor a {
  color: var(--orange);
  margin-left: auto;
}

.project-card span {
  color: var(--orange-dark);
  display: block;
  font-size: 0.78rem;
  font-weight: 900;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.section {
  background:
    linear-gradient(90deg, rgba(11, 31, 58, 0.025) 1px, transparent 1px),
    linear-gradient(180deg, rgba(11, 31, 58, 0.02) 1px, transparent 1px),
    var(--white);
  background-size: 44px 44px;
  padding: clamp(68px, 9vw, 112px) clamp(18px, 5vw, 72px);
}

.about {
  display: grid;
  gap: 34px;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
}

.about-copy {
  border-left: 4px solid var(--orange);
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.85;
  padding-left: 28px;
}

.about-copy p {
  margin: 0 0 18px;
}

.about-strip {
  background: transparent;
  border-radius: 0;
  box-shadow: none;
  color: var(--white);
  display: grid;
  gap: 24px;
  grid-column: 1 / -1;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  overflow: visible;
}

.about-strip span {
  align-items: center;
  aspect-ratio: 1 / 1;
  background:
    linear-gradient(145deg, rgba(11, 31, 58, 0.98), rgba(6, 20, 38, 0.98)),
    radial-gradient(circle at 30% 20%, rgba(244, 123, 32, 0.22), transparent 38%);
  border: 1px solid rgba(244, 123, 32, 0.32);
  border-radius: 999px;
  box-shadow: 0 20px 46px rgba(6, 20, 38, 0.18);
  display: flex;
  flex-direction: column;
  gap: 14px;
  justify-content: center;
  font-family: var(--font-montserrat), Arial, sans-serif;
  font-weight: 800;
  margin: 0 auto;
  max-width: 210px;
  min-height: 160px;
  padding: 26px;
  position: relative;
  text-align: center;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
  width: 100%;
}

.about-strip span::after {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: inherit;
  content: "";
  inset: 10px;
  pointer-events: none;
  position: absolute;
}

.about-strip span:hover {
  border-color: rgba(244, 123, 32, 0.68);
  box-shadow: 0 26px 58px rgba(6, 20, 38, 0.24);
  transform: translateY(-5px);
}

.about-strip b {
  align-items: center;
  background: linear-gradient(135deg, var(--orange), var(--orange-dark));
  border-radius: 999px;
  color: var(--white);
  display: inline-flex;
  flex: 0 0 46px;
  font-size: 1.15rem;
  font-weight: 900;
  height: 46px;
  justify-content: center;
  line-height: 1;
  box-shadow: 0 12px 26px rgba(244, 123, 32, 0.3);
  position: relative;
  z-index: 1;
}

.picture-band {
  background: var(--navy-deep);
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.picture-card {
  min-height: 360px;
  overflow: hidden;
  position: relative;
}

.picture-card img {
  height: 100%;
  inset: 0;
  object-fit: cover;
  position: absolute;
  transition: transform 320ms ease;
  width: 100%;
}

.picture-card::after {
  background:
    linear-gradient(180deg, rgba(6, 20, 38, 0.08), rgba(6, 20, 38, 0.84)),
    linear-gradient(135deg, rgba(244, 123, 32, 0.18), transparent 42%);
  content: "";
  inset: 0;
  position: absolute;
}

.picture-card div {
  bottom: 0;
  color: var(--white);
  left: 0;
  padding: 24px;
  position: absolute;
  right: 0;
  z-index: 1;
}

.picture-card h3 {
  font-size: 1.35rem;
  margin-bottom: 10px;
}

.picture-card p {
  color: #dce6f1;
  line-height: 1.55;
  margin: 0;
}

.picture-card:hover img {
  transform: scale(1.05);
}

.picture-card:hover h3,
.picture-card:hover p {
  transform: translateY(-3px);
}

.picture-card h3,
.picture-card p {
  transition: transform 180ms ease;
}

.section-heading {
  margin: 0 auto 34px;
  max-width: 880px;
  position: relative;
  text-align: center;
}

.section-heading::after {
  background: linear-gradient(90deg, transparent, var(--orange), transparent);
  content: "";
  display: block;
  height: 3px;
  margin: 22px auto 0;
  width: min(180px, 42vw);
}

.section-heading p:not(.eyebrow) {
  color: var(--muted);
  line-height: 1.7;
  margin: 18px auto 0;
  max-width: 720px;
}

.services,
.projects {
  background:
    linear-gradient(90deg, rgba(11, 31, 58, 0.025) 1px, transparent 1px),
    linear-gradient(180deg, rgba(11, 31, 58, 0.02) 1px, transparent 1px),
    var(--surface);
  background-size: 44px 44px;
}

.service-grid,
.benefit-grid,
.project-grid {
  display: grid;
  gap: 18px;
}

.specialist-band {
  align-items: center;
  background:
    linear-gradient(135deg, rgba(244, 123, 32, 0.1) 0 22%, transparent 22%),
    linear-gradient(180deg, var(--white), #fbfcfe);
  border: 1px solid var(--line);
  border-left: 5px solid var(--orange);
  border-radius: 16px;
  box-shadow: 0 18px 45px rgba(6, 20, 38, 0.08);
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(260px, 0.9fr) minmax(0, 1.1fr);
  margin: 0 auto 28px;
  max-width: 1180px;
  padding: clamp(22px, 3vw, 34px);
}

.specialist-band .eyebrow {
  margin-bottom: 10px;
}

.specialist-band h3 {
  color: var(--navy);
  font-size: clamp(1.2rem, 2vw, 1.75rem);
  line-height: 1.3;
}

.specialty-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.specialty-list span {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--navy);
  font-weight: 800;
  padding: 10px 14px;
}

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

.service-card,
.benefit,
.project-card,
.whatsapp-card,
.contact-panel {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 16px;
  position: relative;
}

.service-card {
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(246, 248, 251, 0.92)),
    linear-gradient(135deg, rgba(244, 123, 32, 0.08), transparent);
  min-height: 178px;
  padding: 24px;
  overflow: hidden;
  position: relative;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.service-card::after {
  background: linear-gradient(135deg, rgba(244, 123, 32, 0.18), transparent 58%);
  bottom: 0;
  content: "";
  height: 100%;
  left: 0;
  pointer-events: none;
  position: absolute;
  right: 0;
}

.service-card::before {
  background: var(--service-accent, var(--orange));
  content: "";
  height: 5px;
  left: 0;
  position: absolute;
  right: 0;
  top: 0;
}

.service-card:nth-child(4n + 1) {
  --service-accent: linear-gradient(90deg, var(--orange), var(--orange-light));
}

.service-card:nth-child(4n + 2) {
  --service-accent: linear-gradient(90deg, var(--blue), #5b8def);
}

.service-card:nth-child(4n + 3) {
  --service-accent: linear-gradient(90deg, var(--teal), #34c5b6);
}

.service-card:nth-child(4n) {
  --service-accent: linear-gradient(90deg, var(--navy), var(--navy-soft));
}

.service-card:hover {
  border-color: rgba(244, 123, 32, 0.55);
  box-shadow: 0 22px 50px rgba(13, 32, 58, 0.14);
  transform: translateY(-4px);
}

.service-icon {
  align-items: center;
  background: var(--service-accent, linear-gradient(135deg, var(--orange), var(--orange-dark)));
  border-radius: 12px;
  color: var(--white);
  display: inline-flex;
  font-family: var(--font-montserrat), Arial, sans-serif;
  font-weight: 800;
  height: 48px;
  justify-content: center;
  margin-bottom: 22px;
  width: 48px;
  box-shadow: 0 12px 26px rgba(6, 20, 38, 0.14);
  position: relative;
  z-index: 1;
}

.service-line {
  background: var(--service-accent, var(--orange));
  display: block;
  height: 3px;
  margin-bottom: 18px;
  width: 42px;
  position: relative;
  z-index: 1;
}

.service-card h3 {
  color: var(--navy);
  line-height: 1.35;
  position: relative;
  z-index: 1;
}

.benefit-grid {
  grid-template-columns: repeat(7, minmax(0, 1fr));
}

.benefit {
  align-items: center;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(246, 248, 251, 0.94));
  border-top: 4px solid var(--benefit-accent, var(--orange));
  color: var(--navy);
  display: flex;
  font-weight: 800;
  gap: 12px;
  min-height: 88px;
  padding: 16px;
  box-shadow: 0 10px 26px rgba(6, 20, 38, 0.04);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.benefit:nth-child(4n + 1) { --benefit-accent: var(--orange); }
.benefit:nth-child(4n + 2) { --benefit-accent: var(--blue); }
.benefit:nth-child(4n + 3) { --benefit-accent: var(--teal); }
.benefit:nth-child(4n) { --benefit-accent: var(--navy); }

.benefit:hover {
  border-color: rgba(244, 123, 32, 0.48);
  box-shadow: 0 16px 34px rgba(6, 20, 38, 0.1);
  transform: translateY(-3px);
}

.benefit span {
  background: var(--benefit-accent, var(--orange));
  border-radius: 999px;
  flex: 0 0 12px;
  height: 12px;
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--benefit-accent, var(--orange)) 14%, transparent);
}

.project-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0 auto;
  max-width: 920px;
}

.project-card {
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(246, 248, 251, 0.94));
  border-top: 5px solid var(--project-accent, var(--orange));
  overflow: hidden;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.project-card:nth-child(3n + 1) { --project-accent: var(--orange); }
.project-card:nth-child(3n + 2) { --project-accent: var(--blue); }
.project-card:nth-child(3n) { --project-accent: var(--teal); }

.project-card::after {
  background: linear-gradient(90deg, var(--project-accent, var(--orange)), transparent);
  bottom: 0;
  content: "";
  height: 4px;
  left: 0;
  opacity: 0;
  position: absolute;
  right: 0;
  transition: opacity 180ms ease;
}

.project-card:hover {
  box-shadow: 0 18px 42px rgba(13, 32, 58, 0.12);
  transform: translateY(-4px);
}

.project-card:hover::after {
  opacity: 1;
}

.project-image-wrap {
  overflow: hidden;
}

.project-card img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 260ms ease;
  width: 100%;
}

.project-card:hover img {
  transform: scale(1.045);
}

.project-card > div:last-child {
  padding: 22px;
}

.project-card h3 {
  color: var(--navy);
  margin-bottom: 12px;
}

.project-card p {
  color: var(--muted);
  line-height: 1.65;
  margin: 0;
}

.process-list {
  counter-reset: item;
  display: grid;
  gap: 22px;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.process-list::before {
  background: linear-gradient(90deg, transparent, rgba(244, 123, 32, 0.5), transparent);
  content: "";
  height: 3px;
  left: 7%;
  position: absolute;
  right: 7%;
  top: 50%;
}

.process-list li {
  align-items: center;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(246, 248, 251, 0.98)),
    linear-gradient(135deg, rgba(244, 123, 32, 0.12), transparent);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--navy);
  aspect-ratio: 1 / 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 176px;
  overflow: hidden;
  padding: 22px 18px;
  position: relative;
  box-shadow: 0 16px 38px rgba(6, 20, 38, 0.08);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
  text-align: center;
}

.process-list li:nth-child(3n + 1) { --process-accent: var(--orange); }
.process-list li:nth-child(3n + 2) { --process-accent: var(--blue); }
.process-list li:nth-child(3n) { --process-accent: var(--teal); }

.process-list li::before {
  background: var(--process-accent, var(--orange));
  content: "";
  height: 100%;
  left: 50%;
  opacity: 0.08;
  position: absolute;
  top: -52%;
  transform: translateX(-50%);
  width: 100%;
}

.process-list li:hover {
  border-color: rgba(244, 123, 32, 0.5);
  box-shadow: 0 22px 48px rgba(6, 20, 38, 0.12);
  transform: translateY(-5px);
}

.process-number {
  color: var(--process-accent, var(--orange));
  display: block;
  font-family: var(--font-montserrat), Arial, sans-serif;
  font-size: 1.55rem;
  line-height: 1;
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
}

.process-list b {
  align-items: center;
  background: linear-gradient(145deg, var(--process-accent, var(--orange)), var(--navy-deep));
  border: 4px solid var(--white);
  border-radius: 999px;
  box-shadow: 0 10px 24px rgba(6, 20, 38, 0.16);
  color: var(--white);
  display: inline-flex;
  font-family: var(--font-montserrat), Arial, sans-serif;
  font-size: 1.45rem;
  height: 58px;
  justify-content: center;
  margin-bottom: 14px;
  position: relative;
  width: 58px;
  z-index: 1;
}

.process-list strong {
  color: var(--navy);
  display: block;
  font-family: var(--font-montserrat), Arial, sans-serif;
  font-size: 0.92rem;
  line-height: 1.35;
  max-width: 130px;
  position: relative;
  z-index: 1;
}

.cta {
  align-items: center;
  background:
    linear-gradient(100deg, rgba(6, 20, 38, 0.96), rgba(11, 31, 58, 0.86) 55%, rgba(11, 31, 58, 0.5)),
    url("public/hero-abstract-ductwork.png") center/cover;
  color: var(--white);
  display: flex;
  gap: 24px;
  justify-content: space-between;
  overflow: hidden;
  padding: clamp(46px, 7vw, 76px) clamp(18px, 5vw, 72px);
  position: relative;
}

.cta::after {
  border: 1px solid rgba(255, 255, 255, 0.16);
  content: "";
  inset: 18px;
  pointer-events: none;
  position: absolute;
}

.cta > * {
  position: relative;
  z-index: 1;
}

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

.cta p {
  color: #dce6f1;
  font-size: 1.08rem;
  line-height: 1.7;
  margin: 16px 0 0;
}

.contact-layout {
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
}

.whatsapp-card,
.contact-panel {
  padding: clamp(20px, 3vw, 34px);
  box-shadow: 0 18px 50px rgba(6, 20, 38, 0.08);
}

.contact-panel {
  background:
    linear-gradient(180deg, rgba(231, 237, 243, 0.7), rgba(255, 255, 255, 1)),
    var(--white);
}

.contact-panel-head {
  align-items: flex-start;
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 16px;
  margin-bottom: 18px;
  padding-bottom: 18px;
}

.contact-panel-head .service-icon {
  flex: 0 0 48px;
  margin-bottom: 0;
}

.contact-panel-head h3 {
  color: var(--navy);
  margin-bottom: 8px;
}

.contact-panel-head p {
  color: var(--muted);
  line-height: 1.55;
  margin: 0;
}

.whatsapp-card {
  align-items: center;
  display: flex;
  flex-direction: column;
  gap: 14px;
  justify-content: center;
  overflow: hidden;
  text-align: center;
}

.whatsapp-card::before {
  background: radial-gradient(circle, rgba(31, 143, 85, 0.14), transparent 68%);
  content: "";
  height: 320px;
  pointer-events: none;
  position: absolute;
  right: -80px;
  top: -100px;
  width: 320px;
}

.whatsapp-card__icon {
  align-items: center;
  background: linear-gradient(135deg, #25d366, #1f8f55);
  border-radius: 999px;
  box-shadow: 0 16px 34px rgba(31, 143, 85, 0.3);
  color: var(--white);
  display: inline-flex;
  flex: 0 0 68px;
  height: 68px;
  justify-content: center;
  position: relative;
  width: 68px;
  z-index: 1;
}

.whatsapp-card h3 {
  color: var(--navy);
  font-size: clamp(1.3rem, 2vw, 1.6rem);
  max-width: 360px;
  position: relative;
  z-index: 1;
}

.whatsapp-card > p {
  color: var(--muted);
  line-height: 1.65;
  margin: 0;
  max-width: 360px;
  position: relative;
  z-index: 1;
}

.whatsapp-card__button {
  background: linear-gradient(135deg, #25d366, #1f8f55);
  box-shadow: 0 16px 34px rgba(31, 143, 85, 0.32);
  gap: 10px;
  margin-top: 8px;
  position: relative;
  width: 100%;
  max-width: 340px;
  z-index: 1;
}

.whatsapp-card__button:hover,
.whatsapp-card__button:focus-visible {
  box-shadow: 0 20px 42px rgba(31, 143, 85, 0.42);
}

.quick-actions {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr 1fr;
  margin-bottom: 18px;
}

.quick-actions a {
  align-items: center;
  background: var(--navy);
  border-radius: 10px;
  color: var(--white);
  display: inline-flex;
  font-weight: 900;
  gap: 9px;
  justify-content: center;
  min-height: 48px;
  padding: 14px;
  text-align: center;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.quick-actions a:hover,
.quick-actions a:focus-visible {
  box-shadow: 0 12px 28px rgba(6, 20, 38, 0.14);
  transform: translateY(-2px);
}

.quick-actions a:nth-child(2) {
  background: #1f8f55;
}

.contact-cards {
  display: grid;
  gap: 12px;
}

.contact-cards div {
  align-items: flex-start;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(246, 248, 251, 0.92));
  border: 1px solid var(--line);
  border-left: 5px solid var(--contact-accent, var(--orange));
  border-radius: 14px;
  display: flex;
  gap: 14px;
  padding: 16px;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.contact-cards div:nth-child(3n + 1) { --contact-accent: var(--orange); }
.contact-cards div:nth-child(3n + 2) { --contact-accent: var(--blue); }
.contact-cards div:nth-child(3n) { --contact-accent: var(--teal); }

.contact-cards div:hover {
  box-shadow: 0 14px 30px rgba(6, 20, 38, 0.1);
  transform: translateY(-2px);
}

.contact-cards__icon {
  align-items: center;
  background: color-mix(in srgb, var(--contact-accent, var(--orange)) 14%, transparent);
  border-radius: 10px;
  color: var(--contact-accent, var(--orange));
  display: inline-flex;
  flex: 0 0 38px;
  height: 38px;
  justify-content: center;
  width: 38px;
}

.contact-cards__body {
  display: block;
  min-width: 0;
}

.contact-cards__body strong,
.contact-cards__body span {
  display: block;
}

.contact-cards__body strong {
  color: var(--navy);
  margin-bottom: 4px;
}

.contact-cards__body span {
  color: var(--muted);
  word-break: break-word;
}

.footer {
  background:
    linear-gradient(135deg, rgba(244, 123, 32, 0.12) 0 18%, transparent 18%),
    linear-gradient(180deg, #07172b, #04101f);
  color: #d8e3ee;
  display: grid;
  gap: 34px;
  grid-template-columns: 1.5fr 0.75fr 1fr 1.25fr;
  overflow: hidden;
  padding: 64px clamp(18px, 5vw, 72px) 28px;
  position: relative;
}

.footer::before {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 42px 42px;
  content: "";
  inset: 0;
  opacity: 0.45;
  pointer-events: none;
  position: absolute;
}

.footer > * {
  position: relative;
  z-index: 1;
}

.footer-brand {
  border-right: 1px solid rgba(255, 255, 255, 0.14);
  padding-right: 28px;
}

.footer .brand strong,
.footer h3 {
  color: var(--white);
}

.footer .brand {
  justify-content: flex-start;
  padding: 0;
  text-align: left;
}

.footer .brand strong {
  font-size: clamp(1.55rem, 2.4vw, 2.25rem);
}

.footer .brand small {
  color: #aebfd0;
  font-size: 0.9rem;
}

.footer h3 {
  font-size: 1rem;
  margin-bottom: 18px;
  position: relative;
}

.footer h3::after {
  background: var(--orange);
  bottom: -8px;
  content: "";
  height: 3px;
  left: 0;
  position: absolute;
  width: 34px;
}

.footer a,
.footer span {
  display: block;
  color: #c7d5e3;
  line-height: 1.55;
  margin-top: 10px;
  transition: color 160ms ease, transform 160ms ease;
}

.footer a:hover,
.footer a:focus-visible {
  color: var(--orange);
  transform: translateX(2px);
}

.footer p {
  margin: 16px 0 0;
}

.footer-summary {
  color: #aebfd0;
  line-height: 1.75;
  max-width: 440px;
}

.footer-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.footer-actions a {
  align-items: center;
  background: rgba(255, 255, 255, 0.09);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 10px;
  color: var(--white);
  display: inline-flex;
  font-size: 0.9rem;
  font-weight: 900;
  gap: 8px;
  justify-content: center;
  min-height: 42px;
  padding: 0 14px;
}

.footer-contact-list {
  display: grid;
  gap: 4px;
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
}

.footer-contact-list li {
  align-items: flex-start;
  color: #c7d5e3;
  display: flex;
  gap: 12px;
  line-height: 1.55;
  padding: 8px 0;
}

.footer-contact-list li + li {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-contact-list svg {
  color: var(--orange);
  flex-shrink: 0;
  margin-top: 3px;
}

.footer-contact-list li > span {
  margin-top: 0;
}

.footer-contact-list a {
  align-items: flex-start;
  color: #c7d5e3;
  display: flex;
  gap: 12px;
  margin-top: 0;
  padding: 0;
}

.footer-contact-list a:hover,
.footer-contact-list a:focus-visible {
  color: var(--orange);
  transform: none;
}

.footer-contact-list a:hover svg,
.footer-contact-list a:focus-visible svg {
  color: var(--orange-light);
}

.footer-actions a:first-child {
  background: linear-gradient(135deg, var(--orange), var(--orange-dark));
  border-color: transparent;
}

.copyright {
  align-items: center;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  color: #aebfd0;
  display: flex;
  grid-column: 1 / -1;
  justify-content: space-between;
  gap: 16px;
  padding-top: 24px;
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(22px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@media (max-width: 1180px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
  }

  nav {
    gap: 6px;
  }

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

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

  .specialist-band {
    grid-template-columns: 1fr;
  }

  .specialty-list {
    justify-content: flex-start;
  }

  .benefit-grid,
  .process-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .footer-brand {
    border-right: 0;
    grid-column: 1 / -1;
    padding-right: 0;
  }
}

@media (max-width: 820px) {
  .hero,
  .about,
  .contact-layout,
  .footer {
    grid-template-columns: 1fr;
  }

  .about-strip {
    gap: 18px;
  }

  .about-strip span {
    max-width: 180px;
    min-height: 150px;
  }

  .site-header {
    padding: 0 16px;
  }

  .header-top {
    justify-content: space-between;
    margin: 0 -16px;
    min-height: 104px;
    padding: 16px;
  }

  .header-top::after {
    left: 16px;
    right: 16px;
  }

  .site-header .brand {
    text-align: left;
  }

  .menu-button {
    display: inline-flex;
  }

  .header-nav {
    background: var(--navy);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: 0 18px 42px rgba(6, 20, 38, 0.12);
    display: none;
    margin: 0 0 14px;
    min-height: auto;
    padding: 12px;
  }

  .header-nav.nav-open {
    display: grid;
    gap: 12px;
  }

  .header-nav nav {
    background: transparent;
    border: 0;
    border-radius: 0;
    display: grid;
    gap: 10px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 0;
  }

  nav a {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 6px;
    padding: 12px;
    text-align: center;
  }

  .header-nav .quote-button {
    position: static;
  }

  .quote-button {
    width: 100%;
  }

  .hero {
    min-height: auto;
    padding-top: 56px;
    padding-bottom: 56px;
  }

  .hero-content {
    padding: 28px;
  }

  .hero-content::before {
    left: 50%;
  }

  .proprietor a {
    margin-left: 0;
    width: 100%;
  }

  .about-copy {
    padding-left: 18px;
  }

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

  .process-list::before {
    display: none;
  }

  .process-list li {
    margin: 0 auto;
    max-width: 230px;
    width: 100%;
  }

  .cta {
    align-items: flex-start;
    flex-direction: column;
  }

  .copyright {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .site-header {
    padding: 0 14px;
  }

  .brand {
    min-width: 0;
    gap: 10px;
    padding: 8px 0;
  }

  .brand-mark {
    flex-basis: 50px;
    font-size: 0.95rem;
    height: 50px;
  }

  .brand strong {
    font-size: 1.45rem;
  }

  .brand small {
    font-size: 0.75rem;
  }

  .brand em {
    display: none;
  }

  .hero,
  .section,
  .cta,
  .footer {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-content {
    border-radius: 12px;
    padding: 24px 18px;
  }

  h1 {
    font-size: clamp(2.1rem, 13vw, 3.25rem);
  }

  .hero-actions,
  .quick-actions,
  .service-grid,
  .project-grid,
  .picture-band,
  .process-list,
  .benefit-grid {
    grid-template-columns: 1fr;
  }

  .hero-specialties span,
  .hero-points span {
    flex: 1 1 100%;
    text-align: center;
  }

  .process-list li {
    max-width: 240px;
  }

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

  .service-grid,
  .project-grid,
  .process-list,
  .benefit-grid {
    display: grid;
  }

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

  .about-strip {
    grid-template-columns: 1fr;
  }

  .about-strip span {
    max-width: 220px;
  }

  .footer .brand {
    align-items: flex-start;
  }

  .footer-actions {
    display: grid;
    grid-template-columns: 1fr;
  }
}

.cursor-dot {
  background: var(--orange);
  border-radius: 999px;
  box-shadow: 0 0 10px 2px rgba(244, 123, 32, 0.7);
  height: 10px;
  left: 0;
  margin: -5px 0 0 -5px;
  pointer-events: none;
  position: fixed;
  top: 0;
  transform: translate3d(-100px, -100px, 0);
  width: 10px;
  z-index: 2147483646;
}

.cursor-glow {
  background: radial-gradient(circle, rgba(244, 123, 32, 0.16), rgba(244, 123, 32, 0.05) 45%, transparent 72%);
  border-radius: 999px;
  height: 360px;
  left: 0;
  margin: -180px 0 0 -180px;
  pointer-events: none;
  position: fixed;
  top: 0;
  transform: translate3d(-100px, -100px, 0);
  width: 360px;
  z-index: 2147483646;
}

@media (hover: none), (pointer: coarse) {
  .cursor-dot,
  .cursor-glow {
    display: none;
  }
}