.gt-brand { --gt-green: #143e34; --gt-muted: #52615d; color: #202d29; }
.gt-brand p { line-height: 1.65; }
.gt-brand a:focus-visible { outline: 3px solid #f26522; outline-offset: 5px; }
.gt-hero { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr); background: #f4f6f2; margin: 24px 0 0; border-top: 4px solid var(--gt-green); }
.gt-hero-copy { padding: 48px 40px; }
.gt-kicker { margin: 0 0 22px; color: var(--gt-green); text-transform: uppercase; letter-spacing: .12em; font-size: 11px; font-weight: 700; }
.gt-hero h1 { margin: 0; font-size: clamp(40px, 5vw, 64px); line-height: 1.08; font-weight: 700; letter-spacing: -.04em; }
.gt-hero h1 span { display: block; font-size: clamp(24px, 3vw, 34px); line-height: 1.2; letter-spacing: -.025em; margin-top: 15px; }
.gt-lead { font-size: 17px; color: var(--gt-muted); margin: 24px 0 30px; }
.gt-button { display: inline-flex; gap: 24px; align-items: center; background: var(--gt-green); color: white; padding: 13px 18px; font-size: 14px; font-weight: 600; }
.gt-button:hover { background: #255547; color: white; }
.gt-hero-aside { display: flex; flex-direction: column; justify-content: center; background: #e9eee6; padding: 36px; font-size: 14px; }
.gt-logo { width: 250px; max-width: 100%; height: 94px; object-fit: contain; object-position: left center; mix-blend-mode: multiply; }
.gt-wordmark { font-family: Georgia, serif; font-size: 36px; margin: 0 0 12px; color: var(--gt-green); }
.gt-thread-lines { display: grid; gap: 8px; margin: 25px 0; }
.gt-thread-lines i { display: block; height: 2px; background: var(--gt-green); }
.gt-thread-lines i:nth-child(2) { background: #bb9a59; width: 87%; }
.gt-thread-lines i:nth-child(3) { background: #ae6748; width: 95%; }
.gt-thread-lines i:nth-child(4) { background: #6a8681; width: 78%; }
.gt-thread-lines i:nth-child(5) { background: #839563; width: 92%; }
.gt-status { border-top: 1px solid #c9d2c5; padding-top: 18px; color: var(--gt-muted); font-size: 13px; margin-bottom: 0; }
.gt-nav { display: flex; flex-wrap: wrap; gap: 8px 26px; padding: 21px 0; border-bottom: 1px solid #ced6d0; font-size: 13px; font-weight: 600; }
.gt-nav a { padding: 5px 0; }
.gt-section { padding: 52px 0; border-bottom: 1px solid #dce2dd; scroll-margin-top: 150px; }
.gt-section-heading { display: flex; align-items: baseline; gap: 18px; margin-bottom: 30px; }
.gt-section h2 { font-size: clamp(24px, 3vw, 32px); letter-spacing: -.025em; line-height: 1.25; margin: 0; }
.gt-section-heading p { margin: 12px 0 0; color: var(--gt-muted); max-width: 750px; }
.gt-number { font: 13px var(--mono); color: #63766d; }
.gt-materials { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 40px; }
.gt-materials h3, .gt-applications h3 { font-size: 17px; line-height: 1.4; margin: 0 0 9px; }
.gt-materials p, .gt-applications p { font-size: 15px; margin: 0; color: var(--gt-muted); }
.gt-series { display: grid; grid-template-columns: minmax(150px, .8fr) minmax(0, 2fr) minmax(140px, .7fr); gap: 30px; border-top: 1px solid #ced6d0; padding: 28px 0; }
.gt-series h3 { font-size: 28px; line-height: 1.15; letter-spacing: -.025em; margin: 0 0 10px; color: var(--gt-green); }
.gt-series-name p { color: var(--gt-muted); font-size: 13px; margin: 0; }
.gt-series-body p { margin: 0 0 10px; font-size: 15px; }
.gt-construction { font-weight: 700; }
.gt-series dl { margin: 16px 0 0; font-size: 14px; }
.gt-series dt { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 5px; color: var(--gt-muted); }
.gt-series dd { margin: 0; line-height: 1.65; }
.gt-series-source { display: flex; flex-direction: column; gap: 14px; align-items: flex-start; font-size: 12px; padding-top: 3px; }
.gt-series-source a, .gt-specialty a, .gt-sources li a { text-decoration: underline; text-underline-offset: 3px; }
.gt-specialty { background: #f4f6f2; padding: 28px; margin-top: 16px; }
.gt-specialty > h3 { margin: 0 0 24px; font-size: 22px; }
.gt-specialty-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.gt-specialty h4 { font-size: 17px; margin: 0 0 9px; }
.gt-specialty p { color: var(--gt-muted); font-size: 14px; }
.gt-specialty a { font-size: 12px; }
.gt-applications { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 30px; }
.gt-applications > div { padding-left: 20px; border-left: 2px solid #c1cfc3; }
.gt-applications .gt-range-label { font: 13px var(--mono); color: var(--gt-green); margin: 0 0 12px; }
.gt-selection ol { margin: 0; padding-left: 27px; max-width: 900px; }
.gt-selection li { padding-left: 12px; margin-bottom: 22px; }
.gt-selection li::marker { color: var(--gt-green); font-weight: 700; }
.gt-selection h3 { font-size: 17px; margin: 0 0 7px; }
.gt-selection li p { font-size: 15px; color: var(--gt-muted); margin: 0; }
.gt-selection-note { padding: 20px 24px; background: #f4f6f2; border-left: 3px solid var(--gt-green); font-size: 14px; margin: 30px 0 0; }
.gt-sources { border-bottom: 0; }
.gt-sources h2 { font-size: 22px; }
.gt-sources p { font-size: 14px; color: var(--gt-muted); max-width: 840px; }
.gt-sources ul { display: flex; flex-wrap: wrap; gap: 12px 28px; padding: 0; list-style: none; font-size: 13px; }
.gt-back { display: inline-block; margin-top: 28px; font-size: 14px; font-weight: 600; }
@media (max-width: 900px) {
  .gt-hero-copy { padding: 32px 26px; }
  .gt-hero-aside { padding: 26px; }
  .gt-series { grid-template-columns: minmax(125px, .7fr) minmax(0, 2fr); gap: 20px; }
  .gt-series-source { grid-column: 2; flex-direction: row; flex-wrap: wrap; }
}
@media (max-width: 600px) {
  .gt-hero { grid-template-columns: minmax(0, 1fr); }
  .gt-hero-copy, .gt-hero-aside { padding: 28px 22px; }
  .gt-hero h1 { font-size: 43px; }
  .gt-hero h1 span { font-size: 27px; }
  .gt-lead { font-size: 16px; }
  .gt-logo { width: 200px; height: 65px; }
  .gt-thread-lines { margin: 15px 0; }
  .gt-nav { gap: 9px 20px; }
  .gt-section { padding: 34px 0; }
  .gt-section-heading { gap: 12px; margin-bottom: 24px; }
  .gt-materials, .gt-applications, .gt-specialty-grid { grid-template-columns: minmax(0, 1fr); gap: 25px; }
  .gt-series { grid-template-columns: minmax(0, 1fr); gap: 16px; padding: 25px 0; }
  .gt-series-source { grid-column: 1; gap: 12px 20px; }
  .gt-specialty { padding: 22px; }
  .gt-series h3 { font-size: 27px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* Range directory and informational detail pages. */
.gt-range-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.gt-range-card { display: flex; flex-direction: column; border: 1px solid #dce2dd; transition: border-color .15s ease; }
.gt-range-card:hover { color: inherit; border-color: var(--gt-green); }
.gt-range-main { display: flex; flex-direction: column; flex: 1; }
.gt-range-main:hover { color: inherit; }
.gt-range-source { margin: 0 24px 22px; align-self: flex-start; font-size: 11px; color: var(--gt-muted); text-decoration: underline; text-underline-offset: 3px; }
.gt-range-image { display: flex; align-items: center; justify-content: center; background: #f6f7f4; height: 250px; padding: 20px; }
.gt-range-image img { width: 100%; height: 100%; object-fit: contain; }
.gt-range-body { display: flex; flex-direction: column; flex: 1; padding: 24px; }
.gt-range-body h3 { font-size: 25px; line-height: 1.2; color: var(--gt-green); margin: 0 0 10px; }
.gt-range-body p { font-size: 14px; color: var(--gt-muted); margin: 0 0 16px; }
.gt-range-body .gt-range-material { font-size: 12px; font-weight: 600; color: #42554c; margin-bottom: 12px; }
.gt-range-cta { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; font-size: 13px; font-weight: 700; margin-top: auto; padding-top: 14px; border-top: 1px solid #e2e7e1; }
.gt-detail-hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: 48px; margin: 24px 0 36px; align-items: center; }
.gt-detail-photo { margin: 0; padding: 26px 28px 18px; background: #f5f7f3; min-width: 0; }
.gt-detail-photo > img { width: 100%; height: 430px; object-fit: contain; }
.gt-detail-photo figcaption { color: var(--gt-muted); font-size: 11px; margin-top: 14px; text-align: center; }
.gt-detail-photo figcaption a { text-decoration: underline; text-underline-offset: 3px; }
.gt-detail-intro { padding: 12px 0; min-width: 0; }
.gt-detail-intro .gt-kicker { margin-bottom: 18px; }
.gt-detail h1 { font-size: clamp(34px, 4.5vw, 54px); letter-spacing: -.035em; line-height: 1.13; margin: 0 0 22px; }
.gt-detail-summary { color: var(--gt-muted); font-size: 17px; margin: 0 0 26px; }
.gt-detail-facts { margin: 0 0 26px; border-top: 1px solid #dce2dd; }
.gt-detail-facts > div { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 16px; padding: 13px 0; border-bottom: 1px solid #dce2dd; }
.gt-detail-facts dt { font-size: 12px; color: var(--gt-muted); padding-top: 2px; }
.gt-detail-facts dd { margin: 0; font-size: 14px; line-height: 1.5; font-weight: 600; }
.gt-detail-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 18px 22px; font-size: 13px; font-weight: 600; }
.gt-detail-actions .gt-button { gap: 16px; }
.gt-detail-status { font-size: 12px; color: var(--gt-muted); margin: 20px 0 0; }
.gt-nav span { color: #667970; margin-left: 5px; }
.gt-properties-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 50px; }
.gt-properties-grid h3 { margin: 0 0 20px; font-size: 18px; }
.gt-properties-grid ul { padding: 0; margin: 0; list-style: none; }
.gt-properties-grid li { padding: 0 0 15px 19px; position: relative; font-size: 15px; line-height: 1.65; color: var(--gt-muted); }
.gt-properties-grid li::before { position: absolute; left: 0; top: .6em; width: 5px; height: 5px; background: #65816f; content: ""; }
.gt-spec-table-wrap { overflow-x: auto; border: 1px solid #dce2dd; }
.gt-spec-table-wrap:focus-visible { outline: 2px solid var(--gt-green); outline-offset: 3px; }
.gt-spec-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 14px; min-width: 520px; }
.gt-spec-table th, .gt-spec-table td { padding: 15px 22px; vertical-align: top; border-bottom: 1px solid #e1e7e1; }
.gt-spec-table thead th { background: #eef2ec; font-size: 12px; font-weight: 700; color: #395245; }
.gt-spec-table tbody th { font-weight: 700; color: var(--gt-green); white-space: nowrap; }
.gt-spec-table tbody tr:last-child th, .gt-spec-table tbody tr:last-child td { border-bottom: 0; }
.gt-spec-table tbody tr:nth-child(even) { background: #fafbf9; }
.gt-makeup { display: inline-block; margin: 0 14px 3px 0; }
.gt-variant-note { color: var(--gt-muted); font-size: 12px; margin: 16px 0 0; }
.gt-spec-notes { display: flex; gap: 30px; align-items: baseline; justify-content: space-between; margin-top: 16px; }
.gt-spec-notes p { max-width: 770px; color: var(--gt-muted); font-size: 12px; margin: 0; }
.gt-spec-notes > a { flex-shrink: 0; font-size: 12px; text-decoration: underline; text-underline-offset: 3px; }
.gt-documents-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.gt-document { display: flex; flex-direction: column; padding: 26px; border: 1px solid #d3ddd2; background: #f8faf6; }
.gt-document-meta { display: flex; align-items: center; gap: 14px; font-size: 12px; color: var(--gt-muted); margin-bottom: 22px; }
.gt-pdf-mark { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 52px; border: 1px solid #65816f; background: #fff; font: 11px var(--mono); color: var(--gt-green); }
.gt-document h3 { margin: 0 0 12px; font-size: 21px; line-height: 1.35; }
.gt-document p { font-size: 14px; color: var(--gt-muted); margin: 0 0 24px; }
.gt-document-actions { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; margin-top: auto; font-size: 13px; }
.gt-document-open { background: var(--gt-green); color: #fff; font-weight: 600; padding: 10px 16px; }
.gt-document-open:hover { background: #255547; color: #fff; }
.gt-document-original { font-size: 11px; color: var(--gt-muted); margin-top: 20px; align-self: flex-start; text-decoration: underline; text-underline-offset: 3px; }
.gt-related-series { display: flex; flex-wrap: wrap; gap: 10px; }
.gt-related-series a { display: flex; align-items: center; gap: 24px; padding: 12px 17px; border: 1px solid #dce2dd; font-size: 14px; }
.gt-related-series a:hover { border-color: var(--gt-green); color: var(--gt-green); background: #f4f6f2; }
@media (max-width: 1000px) {
  .gt-detail-hero { gap: 30px; }
  .gt-detail-photo { padding: 20px; }
  .gt-detail-photo > img { height: 380px; }
  .gt-spec-notes { flex-direction: column; gap: 13px; }
  .gt-range-body { padding: 20px; }
}
@media (max-width: 760px) {
  .gt-range-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
  .gt-range-image { height: 220px; }
  .gt-detail-hero { grid-template-columns: minmax(0, 1fr); gap: 25px; }
  .gt-detail-photo > img { height: 340px; }
  .gt-detail-intro { padding: 0; }
  .gt-properties-grid { gap: 28px; }
  .gt-document { padding: 22px; }
}
@media (max-width: 520px) {
  .gt-range-grid, .gt-properties-grid, .gt-documents-grid { grid-template-columns: minmax(0, 1fr); }
  .gt-range-image { height: 255px; }
  .gt-range-body { padding: 22px; }
  .gt-detail-photo > img { height: 290px; }
  .gt-detail-photo { padding: 18px; }
  .gt-detail-hero { margin-top: 20px; }
  .gt-detail h1 { font-size: 37px; }
  .gt-detail-summary { font-size: 16px; }
  .gt-detail-facts > div { grid-template-columns: 86px minmax(0, 1fr); gap: 12px; }
  .gt-detail-actions .gt-button { font-size: 13px; }
  .gt-spec-table th, .gt-spec-table td { padding: 13px 15px; }
  .gt-properties-grid { gap: 24px; }
  .gt-document h3 { font-size: 20px; }
}