:root {
  --orange: #eb6f16;
  --orange-dark: #c95f12;
  --orange-soft: #fff3e9;
  --ink: #23272e;
  --ink-soft: #4b5563;
  --muted: #6b7280;
  --line: #e6e8ec;
  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --dark: #0f1115;
  --radius: 14px;
  --maxw: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
h1,
h2,
h3,
h4 {
  line-height: 1.2;
}
.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* icons */
.icon {
  width: 40px;
  height: 40px;
  display: inline-block;
  color: var(--orange);
}
svg.icon {
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: 999px;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: 0.15s ease;
}
.btn svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.btn-primary {
  background: var(--orange);
  color: #fff;
}
.btn-primary:hover {
  background: var(--orange-dark);
}
.btn-ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.28);
  color: #fff;
}
.btn-ghost:hover {
  border-color: #fff;
}
.btn-outline {
  border-color: var(--line);
  color: var(--ink);
  background: #fff;
}
.btn-outline:hover {
  border-color: var(--orange);
  color: var(--orange);
}

/* nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.nav .brand img {
  height: 26px;
  display: block;
}
.nav .links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.nav .links a:not(.btn):not(.nav-phone) {
  color: var(--ink-soft);
  font-weight: 500;
}
.nav .links a:not(.btn):not(.nav-phone):hover {
  color: var(--orange);
}
.nav-phone {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
}
.nav-phone svg {
  width: 18px;
  height: 18px;
  color: var(--orange);
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.nav-phone:hover {
  color: var(--orange);
}
@media (max-width: 640px) {
  .nav .links .hide-sm {
    display: none;
  }
  .nav-phone .num {
    display: none;
  }
}

/* hero */
.hero {
  background: var(--dark);
  color: #fff;
  padding: 5.5rem 0;
}
.eyebrow {
  color: var(--orange);
  font-weight: 500;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  font-size: 0.78rem;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  margin: 0.6rem 0 1rem;
  font-weight: 600;
}
.hero p {
  color: #c7ccd6;
  font-size: 1.15rem;
  max-width: 620px;
}
.hero .actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

/* sections */
.section {
  padding: 4.5rem 0;
}
.section.alt {
  background: var(--bg-soft);
}
.section-head {
  max-width: 720px;
  margin-bottom: 2.25rem;
}
.section-head h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.25rem);
  margin: 0.4rem 0;
  font-weight: 600;
}
.section-head p {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0;
}

/* valves feature card */
.feature {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.5rem;
  align-items: start;
}
.feature .ficon {
  width: 64px;
  height: 64px;
  color: var(--orange);
  background: var(--orange-soft);
  border-radius: 14px;
  display: grid;
  place-items: center;
}
.feature .ficon svg {
  width: 38px;
  height: 38px;
}
.feature h3 {
  margin: 0.1rem 0 0.3rem;
  font-size: 1.4rem;
}
.feature p {
  color: var(--muted);
  margin: 0 0 1rem;
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.chip {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-soft);
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
}
@media (max-width: 560px) {
  .feature {
    grid-template-columns: 1fr;
  }
}

/* category grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: 0.15s ease;
}
.card:hover {
  border-color: var(--orange);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}
.card .icon {
  margin-bottom: 0.6rem;
}
.card h3 {
  margin: 0.25rem 0;
  font-size: 1.1rem;
}
.card p {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0;
}

/* CTA band */
.cta {
  background: var(--orange);
  color: #fff;
}
.cta .container {
  padding-top: 3.5rem;
  padding-bottom: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.cta h2 {
  font-size: 1.8rem;
  margin: 0 0 0.25rem;
}
.cta p {
  margin: 0;
  color: rgba(255, 255, 255, 0.92);
}
.cta .btn-primary {
  background: #fff;
  color: var(--orange);
}
.cta .btn-primary:hover {
  background: #f1f1f1;
}

/* footer */
.footer {
  background: var(--dark);
  color: #aeb4bf;
  padding: 3.5rem 0 2rem;
}
.footer .cols {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 2rem;
}
.footer img {
  height: 26px;
  margin-bottom: 1rem;
}
.footer h4 {
  color: #fff;
  font-size: 0.95rem;
  margin: 0 0 0.75rem;
}
.footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer li {
  margin-bottom: 0.5rem;
}
.footer a:hover {
  color: #fff;
}
.footer .muted {
  color: #7b818d;
  font-size: 0.92rem;
}
.footer .bottom {
  border-top: 1px solid #20242c;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  font-size: 0.85rem;
  color: #7b818d;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
@media (max-width: 760px) {
  .footer .cols {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 480px) {
  .footer .cols {
    grid-template-columns: 1fr;
  }
}

/* page head (non-home) */
.page-head {
  padding: 3.5rem 0 1rem;
}
.page-head h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin: 0.3rem 0;
  font-weight: 600;
}
.page-head p {
  color: var(--muted);
  max-width: 620px;
}

/* contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 2.5rem;
  padding-bottom: 4.5rem;
}
@media (max-width: 820px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}
.form {
  display: grid;
  gap: 1.1rem;
}
.field label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.4rem;
  font-size: 0.95rem;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  font: inherit;
  color: var(--ink);
  background: #fff;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--orange);
  box-shadow: 0 0 0 3px var(--orange-soft);
}
.field textarea {
  min-height: 150px;
  resize: vertical;
}
.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}
.contact-info {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.75rem;
  align-self: start;
}
.contact-info .row {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  margin-bottom: 1.25rem;
}
.contact-info .row:last-child {
  margin-bottom: 0;
}
.contact-info svg {
  width: 22px;
  height: 22px;
  flex: none;
  margin-top: 2px;
  color: var(--orange);
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.contact-info .label {
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.contact-info a {
  color: var(--orange);
  font-weight: 500;
}

/* thanks */
.center-narrow {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  padding: 6rem 0;
}
.center-narrow .badge {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--orange-soft);
  color: var(--orange);
  display: grid;
  place-items: center;
  margin: 0 auto 1.5rem;
}
.center-narrow .badge svg {
  width: 30px;
  height: 30px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.center-narrow h1 {
  font-size: 2rem;
  margin: 0.25rem 0;
}
.center-narrow p {
  color: var(--muted);
}