.cof-page {
  --cof-oil: #c96d12;
  --cof-oil-dark: #8b410b;
  --cof-navy: #061d2b;
  --cof-blue: #2b7391;
  --cof-mist: #e9f0f3;
  --cof-cream: #f3eee4;
}

.cof-page main {
  overflow: clip;
}

.cof-page img {
  display: block;
  max-width: 100%;
  height: auto;
}

.cof-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(4.8rem, 9vw, 8.5rem) 0 clamp(4.5rem, 8vw, 7.5rem);
  background:
    radial-gradient(circle at 82% 18%, rgba(201, 109, 18, .17), transparent 22rem),
    linear-gradient(120deg, #041722 0%, #082b3d 58%, #061d2b 100%);
  color: #fff;
}

.cof-hero::after {
  position: absolute;
  right: -12rem;
  bottom: -18rem;
  width: 42rem;
  height: 42rem;
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 50%;
  content: "";
}

.cof-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(24rem, .94fr);
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: center;
}

.cof-hero-copy,
.cof-hero-product {
  min-width: 0;
}

.cof-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-bottom: clamp(2.4rem, 5vw, 4.5rem);
  color: #a8bec9;
  font-size: .73rem;
  font-weight: 800;
}

.cof-breadcrumb a {
  color: #e9f2f5;
  text-decoration: none;
}

.cof-hero .st-kicker {
  color: #f4a14b;
}

.cof-hero h1 {
  max-width: 12ch;
  margin: 0;
  color: #fff;
  font-size: clamp(3.6rem, 5.8vw, 6rem);
  line-height: .96;
  letter-spacing: -.055em;
}

.cof-hero-lead {
  max-width: 43rem;
  margin: 1.8rem 0 0;
  color: #c9d8df;
  font-size: clamp(1.05rem, 1.55vw, 1.35rem);
  line-height: 1.65;
}

.cof-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 2rem;
}

.cof-button {
  display: inline-flex;
  min-height: 3.2rem;
  align-items: center;
  justify-content: center;
  padding: .8rem 1.25rem;
  border: 1px solid #7692a1;
  color: #fff;
  font-weight: 850;
  text-decoration: none;
}

.cof-button.is-primary {
  border-color: var(--cof-oil);
  background: var(--cof-oil);
}

.cof-hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 2.1rem 0 0;
  padding-top: 1px;
  background: rgba(255, 255, 255, .2);
}

.cof-hero-facts div {
  padding: 1rem .9rem 1rem 0;
  background: var(--cof-navy);
}

.cof-hero-facts dt {
  color: #86a5b4;
  font-size: .66rem;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.cof-hero-facts dd {
  margin: .3rem 0 0;
  color: #fff;
  font-size: .94rem;
  font-weight: 850;
  line-height: 1.35;
}

.cof-hero-product {
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .24);
  background: #fff;
  color: var(--cof-navy);
  box-shadow: 0 2rem 5rem rgba(0, 0, 0, .28);
}

.cof-hero-product img {
  width: 100%;
}

.cof-hero-product figcaption,
.cof-context-figure figcaption,
.cof-installation-figure figcaption {
  display: grid;
  gap: .35rem;
  padding: 1.05rem 1.15rem 1.15rem;
  border-top: 1px solid var(--st-line);
  background: #fff;
  color: var(--cof-navy);
}

.cof-hero-product figcaption span,
.cof-context-figure figcaption span,
.cof-installation-figure figcaption span {
  color: var(--cof-oil-dark);
  font-size: .67rem;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.cof-section-nav {
  position: sticky;
  z-index: 45;
  top: 74px;
  border-bottom: 1px solid var(--st-line);
  background: rgba(247, 250, 251, .97);
  backdrop-filter: blur(14px);
}

.cof-section-nav > div {
  display: flex;
  gap: 1.45rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.cof-section-nav > div::-webkit-scrollbar {
  display: none;
}

.cof-section-nav a {
  flex: 0 0 auto;
  padding: .95rem 0;
  color: var(--st-copy);
  font-size: .72rem;
  font-weight: 850;
  text-decoration: none;
}

.cof-section-head {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(20rem, .62fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
  margin-bottom: clamp(2.2rem, 4.5vw, 4rem);
}

.cof-section-head h2,
.cof-installation-copy h2 {
  max-width: 17ch;
  margin: 0;
  color: var(--cof-navy);
  font-size: clamp(2.5rem, 4.25vw, 4.6rem);
  line-height: 1;
  letter-spacing: -.048em;
}

.cof-section-head > p,
.cof-installation-copy > p:not(.st-kicker) {
  margin: 0;
  color: var(--st-copy);
  line-height: 1.72;
}

.cof-chapter-grid {
  display: grid;
  grid-template-columns: minmax(18rem, .78fr) minmax(0, 1.22fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}

.cof-application-cards {
  display: grid;
  gap: 1rem;
}

.cof-application-cards article {
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border-top: 4px solid var(--cof-blue);
  background: var(--cof-mist);
}

.cof-application-cards article.is-alternative {
  border-top-color: var(--cof-oil);
  background: var(--cof-cream);
}

.cof-application-cards article > span,
.cof-value-grid article > span,
.cof-selection-grid article > span {
  color: var(--cof-oil-dark);
  font-size: .66rem;
  font-weight: 900;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.cof-application-cards h3 {
  margin: .75rem 0 1rem;
  color: var(--cof-navy);
  font-size: clamp(1.35rem, 2.3vw, 2rem);
  line-height: 1.1;
}

.cof-application-cards ul,
.cof-quote-copy ul {
  display: grid;
  gap: .7rem;
  margin: 0;
  padding-left: 1.15rem;
  color: var(--st-copy);
  line-height: 1.55;
}

.cof-application-cards p {
  margin: 0;
  color: var(--st-copy);
  line-height: 1.65;
}

.cof-context-figure,
.cof-component-figure,
.cof-sizing-figure,
.cof-installation-figure {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--st-line);
  background: #fff;
}

.cof-context-figure img,
.cof-component-figure img,
.cof-sizing-figure img,
.cof-installation-figure img {
  width: 100%;
}

.cof-process {
  background: var(--cof-navy);
  color: #fff;
}

.cof-process-head {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(18rem, .45fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
  margin-bottom: clamp(2.2rem, 4vw, 3.5rem);
}

.cof-process-head .st-kicker {
  grid-column: 1 / -1;
  margin-bottom: -1.3rem;
  color: #f4a14b;
}

.cof-process-head h2 {
  max-width: 16ch;
  margin: 0;
  color: #fff;
  font-size: clamp(2.5rem, 4.25vw, 4.6rem);
  line-height: 1;
  letter-spacing: -.048em;
}

.cof-process-head > p:last-child {
  margin: 0;
  color: #b7cbd5;
  line-height: 1.72;
}

.cof-process-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(20rem, .95fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}

.cof-process-steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 1px;
  background: #294657;
  list-style: none;
}

.cof-process-steps li {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: .9rem;
  min-width: 0;
  padding: 1.3rem;
  background: #0a2939;
}

.cof-process-steps li > span {
  color: #f4a14b;
  font: 800 .74rem/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.cof-process-steps h3 {
  margin: 0 0 .4rem;
  color: #fff;
  font-size: 1.05rem;
  line-height: 1.25;
}

.cof-process-steps p {
  margin: 0;
  color: #b7cbd5;
  font-size: .88rem;
  line-height: 1.55;
}

.cof-process-media {
  display: grid;
  gap: 1rem;
  min-width: 0;
}

.cof-process-media figure {
  margin: 0;
  overflow: hidden;
  background: #fff;
  color: var(--cof-navy);
}

.cof-process-media figure img {
  width: 100%;
}

.cof-process-media figcaption {
  padding: .9rem 1rem;
  border-top: 1px solid var(--st-line);
  line-height: 1.55;
}

.cof-video-trigger {
  display: grid;
  min-height: 8.5rem;
  grid-template-columns: 3.3rem minmax(0, 1fr);
  gap: .45rem 1rem;
  align-items: center;
  padding: 1.2rem;
  border: 1px solid #537283;
  background: #102f40;
  color: #fff;
  text-align: left;
  cursor: pointer;
}

.cof-video-trigger > span {
  display: grid;
  width: 3.3rem;
  height: 3.3rem;
  grid-row: 1 / 3;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, .5);
  border-radius: 50%;
  background: var(--cof-oil);
}

.cof-video-trigger strong {
  align-self: end;
  font-size: 1.05rem;
  line-height: 1.25;
}

.cof-video-trigger small {
  align-self: start;
  color: #afc4ce;
  line-height: 1.4;
}

.cof-chapter-grid.is-components {
  grid-template-columns: minmax(20rem, .86fr) minmax(0, 1.14fr);
  align-items: stretch;
}

.cof-component-figure {
  align-self: start;
}

.cof-component-figure figcaption,
.cof-sizing-figure figcaption {
  padding: 1rem 1.1rem;
  border-top: 1px solid var(--st-line);
  color: var(--st-copy);
  line-height: 1.6;
}

.cof-component-list {
  display: grid;
  gap: 1px;
  background: var(--st-line);
  border: 1px solid var(--st-line);
}

.cof-component-list article {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  gap: 1rem;
  min-width: 0;
  padding: clamp(1.2rem, 2.5vw, 2rem);
  background: #fff;
}

.cof-component-list article > span {
  color: var(--cof-oil-dark);
  font: 800 .72rem/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.cof-component-list h3 {
  margin: 0 0 .45rem;
  color: var(--cof-navy);
  font-size: clamp(1.15rem, 1.8vw, 1.55rem);
  line-height: 1.2;
}

.cof-component-list p {
  margin: 0;
  color: var(--st-copy);
  line-height: 1.6;
}

.cof-value {
  padding: clamp(4rem, 8vw, 7rem) 0;
  background: var(--cof-mist);
}

.cof-value-intro {
  display: grid;
  grid-template-columns: minmax(0, .45fr) minmax(0, .55fr);
  gap: 2rem;
  align-items: end;
  margin-bottom: 2rem;
}

.cof-value-intro h2 {
  max-width: 18ch;
  margin: 0;
  color: var(--cof-navy);
  font-size: clamp(2.25rem, 3.8vw, 4rem);
  line-height: 1;
  letter-spacing: -.045em;
}

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

.cof-value-grid article {
  min-width: 0;
  padding: clamp(1.4rem, 3vw, 2.4rem);
  background: #fff;
}

.cof-value-grid h3,
.cof-selection-grid h3 {
  margin: .75rem 0 .7rem;
  color: var(--cof-navy);
  font-size: clamp(1.2rem, 1.8vw, 1.55rem);
  line-height: 1.15;
}

.cof-value-grid p,
.cof-selection-grid p {
  margin: 0;
  color: var(--st-copy);
  line-height: 1.6;
}

.cof-models {
  background: var(--cof-cream);
}

.cof-sizing-grid {
  display: grid;
  grid-template-columns: minmax(18rem, .75fr) minmax(0, 1.25fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  margin-bottom: 2rem;
}

.cof-sizing-notes {
  display: grid;
  gap: 1rem;
}

.cof-sizing-notes article {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  gap: 1rem;
  padding: 1.15rem 1.25rem;
  border-left: 3px solid var(--cof-blue);
  background: #fff;
}

.cof-sizing-notes article > span {
  color: var(--cof-oil-dark);
  font-weight: 900;
}

.cof-sizing-notes h3 {
  margin: 0 0 .35rem;
  color: var(--cof-navy);
  font-size: 1.05rem;
}

.cof-sizing-notes p {
  margin: 0;
  color: var(--st-copy);
  line-height: 1.55;
}

.cof-model-table table {
  min-width: 52rem;
}

.cof-model-table caption {
  padding: 1rem 1.1rem;
  background: #fff;
  color: var(--cof-navy);
  font-weight: 850;
  text-align: left;
}

.cof-installation {
  background: #fff;
}

.cof-chapter-grid.is-installation {
  grid-template-columns: minmax(0, 1.02fr) minmax(20rem, .98fr);
}

.cof-installation-copy > p:not(.st-kicker) {
  max-width: 46rem;
  margin-top: 1.3rem;
}

.cof-installation-copy ol {
  display: grid;
  gap: 1px;
  margin: 2rem 0 0;
  padding: 1px;
  background: var(--st-line);
  list-style: none;
}

.cof-installation-copy li {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  gap: .9rem;
  padding: 1.05rem;
  background: var(--cof-mist);
}

.cof-installation-copy li > span {
  color: var(--cof-oil-dark);
  font: 800 .72rem/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.cof-installation-copy h3 {
  margin: 0 0 .3rem;
  color: var(--cof-navy);
  font-size: 1rem;
}

.cof-installation-copy li p {
  margin: 0;
  color: var(--st-copy);
  line-height: 1.55;
}

.cof-selection {
  background: var(--cof-navy);
  color: #fff;
}

.cof-selection .cof-section-head h2 {
  color: #fff;
}

.cof-selection .cof-section-head > p {
  color: #b8cbd5;
}

.cof-selection .st-kicker {
  color: #f4a14b;
}

.cof-selection-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: #2a4858;
  border: 1px solid #2a4858;
}

.cof-selection-grid article {
  min-width: 0;
  padding: clamp(1.35rem, 3vw, 2.3rem);
  background: #0b2a3a;
}

.cof-selection-grid article > span {
  color: #f4a14b;
}

.cof-selection-grid h3 {
  color: #fff;
}

.cof-selection-grid p {
  color: #b8cbd5;
}

.cof-faq {
  background: var(--cof-mist);
}

.cof-faq-grid {
  display: grid;
  grid-template-columns: minmax(18rem, .68fr) minmax(0, 1.32fr);
  gap: clamp(2.5rem, 6vw, 6rem);
}

.cof-faq h2 {
  max-width: 11ch;
  margin: 0 0 1.2rem;
  color: var(--cof-navy);
  font-size: clamp(2.5rem, 4.2vw, 4.5rem);
  line-height: 1;
  letter-spacing: -.048em;
}

.cof-faq header > p:last-child {
  color: var(--st-copy);
  line-height: 1.68;
}

.cof-faq details {
  border-top: 1px solid var(--st-line);
  background: #fff;
}

.cof-faq details:last-child {
  border-bottom: 1px solid var(--st-line);
}

.cof-faq summary {
  position: relative;
  padding: 1.3rem 3.2rem 1.3rem 1.2rem;
  color: var(--cof-navy);
  font-weight: 850;
  line-height: 1.4;
  cursor: pointer;
  list-style: none;
}

.cof-faq summary::-webkit-details-marker {
  display: none;
}

.cof-faq summary::after {
  position: absolute;
  right: 1.2rem;
  content: "+";
  color: var(--cof-oil-dark);
  font-size: 1.35rem;
}

.cof-faq details[open] summary::after {
  content: "−";
}

.cof-faq details p {
  margin: 0;
  padding: 0 1.2rem 1.4rem;
  color: var(--st-copy);
  line-height: 1.68;
}

.cof-quote {
  background: var(--cof-navy);
  color: #fff;
}

.cof-quote-grid {
  display: grid;
  grid-template-columns: minmax(18rem, .62fr) minmax(0, 1.38fr);
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: start;
}

.cof-quote-grid > *,
.cof-quote-copy {
  min-width: 0;
}

.cof-quote-copy .st-kicker {
  color: #f4a14b;
}

.cof-quote-copy h2 {
  max-width: 12ch;
  margin: 0 0 1.2rem;
  color: #fff;
  font-size: clamp(2.5rem, 4.2vw, 4.5rem);
  line-height: 1;
  letter-spacing: -.048em;
}

.cof-quote-copy > p:not(.st-kicker) {
  color: #bdced6;
  line-height: 1.68;
}

.cof-quote-copy ul {
  color: #d4e0e5;
}

.cof-page .hnl-inquiry-grid > label,
.cof-page .hnl-inquiry-grid input,
.cof-page .hnl-inquiry-grid textarea {
  min-width: 0;
}

.cof-video-dialog {
  width: min(92vw, 70rem);
  padding: 0;
  border: 0;
  background: transparent;
}

.cof-video-dialog::backdrop {
  background: rgba(3, 12, 18, .88);
}

.cof-video-dialog > div {
  overflow: hidden;
  border: 1px solid #486476;
  background: var(--cof-navy);
  color: #fff;
  box-shadow: 0 2rem 6rem rgba(0, 0, 0, .55);
}

.cof-video-dialog header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .85rem 1rem;
}

.cof-video-dialog h2 {
  margin: 0;
  color: #fff;
  font-size: 1rem;
}

.cof-video-dialog button {
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid #76909e;
  background: transparent;
  color: #fff;
  font-size: 1.35rem;
  cursor: pointer;
}

.cof-video-dialog iframe {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
  background: #000;
}

@media (max-width: 1100px) {
  .cof-process-grid {
    grid-template-columns: 1fr;
  }

  .cof-process-media {
    grid-template-columns: minmax(0, 1fr) minmax(18rem, .65fr);
    align-items: stretch;
  }

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

@media (max-width: 900px) {
  .cof-hero-grid,
  .cof-section-head,
  .cof-process-head,
  .cof-chapter-grid,
  .cof-chapter-grid.is-components,
  .cof-chapter-grid.is-installation,
  .cof-sizing-grid,
  .cof-faq-grid,
  .cof-quote-grid {
    grid-template-columns: 1fr;
  }

  .cof-hero-product,
  .cof-context-figure,
  .cof-component-figure,
  .cof-sizing-figure,
  .cof-installation-figure {
    width: min(100%, 42rem);
    margin-inline: auto;
  }

  .cof-section-head,
  .cof-process-head {
    align-items: start;
  }

  .cof-section-head > p,
  .cof-process-head > p:last-child {
    max-width: 48rem;
  }

  .cof-process-head .st-kicker {
    margin-bottom: -1rem;
  }

  .cof-value-intro {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 680px) {
  .cof-section-nav {
    top: 68px;
  }

  .cof-process-steps,
  .cof-process-media,
  .cof-value-grid,
  .cof-selection-grid {
    grid-template-columns: 1fr;
  }

  .cof-hero-facts {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .cof-hero {
    padding-top: 3.5rem;
  }

  .cof-hero h1 {
    max-width: none;
    font-size: clamp(2.65rem, 11.5vw, 3.8rem);
    line-height: 1;
    overflow-wrap: anywhere;
  }

  .cof-breadcrumb {
    margin-bottom: 2.2rem;
  }

  .cof-hero-actions {
    display: grid;
  }

  .cof-button {
    width: 100%;
  }

  .cof-section-head h2,
  .cof-process-head h2,
  .cof-installation-copy h2,
  .cof-faq h2,
  .cof-quote-copy h2,
  .cof-value-intro h2 {
    max-width: none;
    font-size: clamp(2.2rem, 10.2vw, 3.25rem);
    overflow-wrap: anywhere;
  }

  .cof-component-list article,
  .cof-sizing-notes article,
  .cof-installation-copy li {
    grid-template-columns: 2rem minmax(0, 1fr);
  }

  .cof-video-trigger {
    grid-template-columns: 3rem minmax(0, 1fr);
  }
}