:root {
  --ink: #14211f;
  --muted: #5d6a66;
  --paper: #f7f5ef;
  --panel: #ffffff;
  --line: #d9ddd5;
  --accent: #0f6f64;
  --accent-dark: #0a4e47;
  --warm: #d67b2d;
  --dark: #102927;
  --shadow: 0 24px 70px rgba(20, 33, 31, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
}

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

button,
input,
select,
textarea {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 76px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: rgba(247, 245, 239, 0.94);
  border-bottom: 1px solid rgba(16, 41, 39, 0.08);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 210px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  color: #fff;
  background: var(--accent);
  font-weight: 800;
}

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

.brand small {
  color: var(--muted);
  font-size: 0.82rem;
}

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

.site-nav a,
.nav-toggle {
  min-height: 42px;
  padding: 10px 14px;
  border-radius: 8px;
  color: var(--muted);
  border: 0;
  background: transparent;
  cursor: pointer;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--ink);
  background: rgba(15, 111, 100, 0.08);
}

.site-nav .nav-call {
  margin-left: 8px;
  color: #fff;
  background: var(--dark);
}

.nav-toggle {
  display: none;
}

.hero {
  position: relative;
  min-height: calc(100svh - 76px);
  display: grid;
  align-items: center;
  overflow: hidden;
  padding: clamp(42px, 7vw, 88px) clamp(18px, 6vw, 86px);
  background:
    linear-gradient(90deg, rgba(16, 41, 39, 0.92), rgba(16, 41, 39, 0.74) 42%, rgba(16, 41, 39, 0.38)),
    radial-gradient(circle at 78% 32%, rgba(214, 123, 45, 0.45), transparent 26%),
    linear-gradient(145deg, #173b38, #102927 52%, #f2efe6);
  color: #fff;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
  animation: liftIn 700ms ease both;
}

.hero h1,
.page-hero h1 {
  margin: 0;
  max-width: 920px;
  font-size: clamp(2.35rem, 6vw, 5.6rem);
  line-height: 0.98;
  letter-spacing: 0;
}

.hero-text,
.page-hero p {
  max-width: 650px;
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  color: rgba(255, 255, 255, 0.86);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--warm);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease, border 160ms ease;
}

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

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

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

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

.hero .btn-secondary {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.34);
}

.btn-light {
  color: var(--dark);
  background: #fff;
}

.hero-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
  max-width: 760px;
}

.hero-summary span {
  padding: 10px 12px;
  border-radius: 8px;
  color: #fff;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.hero-visual {
  position: absolute;
  inset: 0;
}

.pipe {
  position: absolute;
  display: block;
  border: 24px solid rgba(255, 255, 255, 0.16);
  border-left-color: rgba(214, 123, 45, 0.68);
  border-bottom-color: rgba(15, 111, 100, 0.7);
  border-radius: 42px;
  animation: slowDrift 8s ease-in-out infinite alternate;
}

.pipe-one {
  width: 360px;
  height: 220px;
  right: 9vw;
  top: 16vh;
}

.pipe-two {
  width: 250px;
  height: 170px;
  right: -50px;
  bottom: 12vh;
  animation-delay: 600ms;
}

.pipe-three {
  width: 160px;
  height: 160px;
  left: 52vw;
  bottom: 18vh;
  animation-delay: 900ms;
}

.section {
  padding: clamp(58px, 8vw, 104px) clamp(18px, 6vw, 86px);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section h2,
.final-cta h2 {
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 3rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 34px;
  max-width: 1050px;
}

.split p {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.text-link {
  color: var(--accent-dark);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 5px;
}

.band {
  background: #fff;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.service-grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.service-grid article {
  min-height: 250px;
  padding: 28px;
  background: #fff;
}

.service-number,
.product-card span {
  color: var(--accent);
  font-weight: 800;
  font-size: 0.82rem;
  text-transform: uppercase;
}

.service-grid h3,
.product-card h2,
.contact-card h2,
.info-panel h2 {
  margin: 16px 0 10px;
  font-size: 1.25rem;
  line-height: 1.2;
}

.service-grid p,
.product-card p,
.contact-card p,
.info-panel p {
  color: var(--muted);
}

.steps {
  background: var(--paper);
}

.step-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.step-list li {
  position: relative;
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 34px rgba(20, 33, 31, 0.06);
}

.step-list strong,
.step-list span {
  display: block;
}

.step-list span {
  margin-top: 8px;
  color: var(--muted);
}

.trust {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 50px;
  background: var(--dark);
  color: #fff;
}

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

.trust-list p {
  margin: 0;
  padding: 18px;
  border-left: 3px solid var(--warm);
  background: rgba(255, 255, 255, 0.08);
}

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 920px;
}

details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

summary {
  min-height: 54px;
  padding: 16px 18px;
  font-weight: 800;
  cursor: pointer;
}

details p {
  margin: 0;
  padding: 0 18px 18px;
  color: var(--muted);
}

.quick-demand {
  background: #fff;
}

.quick-card {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 1fr);
  gap: 36px;
  max-width: 1120px;
  padding: clamp(24px, 4vw, 42px);
  border-radius: 8px;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

form {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  min-height: 46px;
  padding: 12px 13px;
  color: var(--ink);
  background: #fff;
  border: 1px solid #cfd7d2;
  border-radius: 8px;
}

textarea {
  resize: vertical;
}

.final-cta {
  padding: clamp(54px, 8vw, 92px) clamp(18px, 6vw, 86px);
  color: #fff;
  background: linear-gradient(135deg, var(--accent-dark), var(--dark));
}

.final-cta p {
  margin: 0 0 10px;
  color: rgba(255, 255, 255, 0.76);
}

.final-cta .btn {
  margin-top: 24px;
}

.site-footer {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 28px;
  padding: 44px clamp(18px, 6vw, 86px);
  color: #dce8e4;
  background: #0b1d1b;
}

.site-footer a,
.site-footer span,
.site-footer strong {
  display: block;
}

.site-footer span {
  color: var(--warm);
  font-weight: 800;
  margin-bottom: 8px;
}

.site-footer p {
  margin: 8px 0 0;
  color: #a9b8b4;
}

.page-hero {
  padding: clamp(58px, 8vw, 108px) clamp(18px, 6vw, 86px);
  color: #fff;
  background:
    linear-gradient(135deg, rgba(16, 41, 39, 0.96), rgba(15, 111, 100, 0.82)),
    linear-gradient(90deg, #102927, #0f6f64);
}

.page-hero p {
  color: rgba(255, 255, 255, 0.84);
}

.noscript-note {
  padding: 14px clamp(18px, 6vw, 86px);
  color: #fff;
  background: var(--accent-dark);
}

.noscript-note a {
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.shop-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 28px;
  align-items: start;
}

.product-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.product-card,
.contact-card,
.info-panel {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.product-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 44px rgba(20, 33, 31, 0.1);
}

.product-card .btn {
  margin-top: 12px;
}

.cart-panel {
  min-width: 0;
}

.cart-sticky {
  position: sticky;
  top: 96px;
  padding: 24px;
  border-radius: 8px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.cart-items {
  min-height: 52px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  color: var(--muted);
}

.cart-items li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
}

.cart-items button {
  min-width: 34px;
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
}

.service-detail {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.service-detail article {
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.service-detail h2 {
  font-size: 1.45rem;
}

.service-detail li + li {
  margin-top: 8px;
}

.about-grid,
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.75fr);
  gap: 26px;
}

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

.big-link {
  display: block;
  margin: 10px 0;
  color: var(--accent-dark);
  font-size: 1.25rem;
  font-weight: 800;
}

.muted {
  color: var(--muted);
}

@keyframes liftIn {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slowDrift {
  from {
    transform: translate3d(0, 0, 0) rotate(-6deg);
  }
  to {
    transform: translate3d(12px, -10px, 0) rotate(3deg);
  }
}

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

  .site-nav {
    position: absolute;
    left: 18px;
    right: 18px;
    top: 72px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

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

  .site-nav .nav-call {
    margin-left: 0;
    text-align: center;
  }

  .hero {
    min-height: auto;
    padding-top: 38px;
    padding-bottom: 38px;
  }

  .hero h1,
  .page-hero h1 {
    font-size: clamp(2.2rem, 11vw, 4rem);
  }

  .pipe-one {
    right: -110px;
    top: 90px;
  }

  .pipe-two,
  .pipe-three {
    display: none;
  }

  .split,
  .trust,
  .quick-card,
  .shop-layout,
  .about-grid {
    grid-template-columns: 1fr;
  }

  .service-grid,
  .service-grid.three,
  .step-list,
  .product-list,
  .service-detail,
  .contact-grid,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .cart-sticky {
    position: static;
  }
}

@media (max-width: 520px) {
  .site-header {
    min-height: 68px;
    padding: 11px 14px;
  }

  .brand {
    min-width: 0;
  }

  .brand small {
    display: none;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .site-nav {
    top: 66px;
    left: 12px;
    right: 12px;
  }

  .hero {
    padding: 26px 16px 28px;
  }

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

  .hero-actions {
    margin-top: 18px;
  }

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

  .hero-summary {
    margin-top: 18px;
    gap: 8px;
  }

  .hero-summary span {
    width: 100%;
    padding: 9px 10px;
  }

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

  .quick-card,
  .product-card,
  .contact-card,
  .info-panel,
  .service-detail article,
  .service-grid article,
  .step-list li {
    padding: 20px;
  }
}