/* Page-local styles: PTFE-coated O-ring technical article. */
.page-ptfe-o-rings .ptfe-container { max-width: 1160px; }
.page-ptfe-o-rings .ptfe-skip-link { position: fixed; top: -100px; left: 16px; z-index: 10000; padding: 12px 18px; background: white; color: #163f70; }
.page-ptfe-o-rings .ptfe-skip-link:focus { top: 12px; }
.page-ptfe-o-rings .ptfe-hero { padding: 24px 0 60px; text-align: left; }
.page-ptfe-o-rings .breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; font-size: .82rem; margin: 0 0 32px; }
.page-ptfe-o-rings .ptfe-hero-grid { display: grid; grid-template-columns: 1.2fr 1fr; align-items: center; gap: 56px; }
.page-ptfe-o-rings .ptfe-hero h1 { font-size: clamp(2rem, 3.5vw, 3.15rem); line-height: 1.12; max-width: 650px; margin: 18px 0 24px; }
.page-ptfe-o-rings .ptfe-hero p { max-width: none; margin: 0 0 22px; font-size: 1rem; line-height: 1.75; }
.page-ptfe-o-rings .ptfe-hero .ptfe-lead { color: #fff; font-size: 1.16rem; }
.page-ptfe-o-rings .ptfe-hero .section-label { background: rgba(255,255,255,.08); color: #bcd9ff; }
.page-ptfe-o-rings .ptfe-text-link { display: inline-block; color: #fff; margin: 18px 0 0; font-size: .9rem; text-underline-offset: 5px; }
.page-ptfe-o-rings .ptfe-hero-copy > .btn { margin-right: 20px; }
.page-ptfe-o-rings figure { margin: 0; min-width: 0; }
.page-ptfe-o-rings .ptfe-hero-photo { overflow: hidden; border-radius: 14px; background: #101e30; border: 1px solid rgba(255,255,255,.16); }
.page-ptfe-o-rings .ptfe-hero-photo img { display: block; width: 100%; height: 470px; object-fit: cover; object-position: center 60%; }
.page-ptfe-o-rings .ptfe-hero-photo figcaption { padding: 13px 20px; font-size: .83rem; color: #d4e0ed; }
.page-ptfe-o-rings .ptfe-section { padding: 68px 0; }
.page-ptfe-o-rings main section[id] { scroll-margin-top: 90px; }
.page-ptfe-o-rings .ptfe-section-tinted { background: #f3f6fa; }
.page-ptfe-o-rings main h2 { font-size: clamp(1.6rem, 2.3vw, 2.15rem); line-height: 1.25; color: #192b42; margin: 12px 0 20px; }
.page-ptfe-o-rings .ptfe-section p { line-height: 1.8; color: #49566a; margin: 0 0 18px; }
.page-ptfe-o-rings .ptfe-intro-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 60px; }
.page-ptfe-o-rings .ptfe-section-heading { max-width: 800px; margin-bottom: 32px; }
.page-ptfe-o-rings .ptfe-process-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.page-ptfe-o-rings .ptfe-process-card { overflow: hidden; border: 1px solid #dce3ec; border-radius: 12px; background: #fff; }
.page-ptfe-o-rings .ptfe-process-card > img { display: block; width: 100%; height: 350px; object-fit: cover; object-position: center; }
.page-ptfe-o-rings .ptfe-process-card figcaption { padding: 24px; }
.page-ptfe-o-rings .ptfe-step { display: block; font-size: .8rem; letter-spacing: .08em; color: #2468ad; font-weight: 700; margin-bottom: 8px; }
.page-ptfe-o-rings .ptfe-process-card h3 { font-size: 1.16rem; line-height: 1.35; color: #192b42; margin: 0 0 10px; }
.page-ptfe-o-rings .ptfe-process-card p { font-size: .92rem; margin: 0; }
.page-ptfe-o-rings .ptfe-report-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.page-ptfe-o-rings .ptfe-results { width: 100%; border-collapse: collapse; margin: 26px 0 24px; font-size: .95rem; }
.page-ptfe-o-rings .ptfe-results caption { text-align: left; font-weight: 600; color: #192b42; padding-bottom: 12px; }
.page-ptfe-o-rings .ptfe-results th, .page-ptfe-o-rings .ptfe-results td { text-align: left; padding: 15px 18px; border-bottom: 1px solid #dce3ec; }
.page-ptfe-o-rings .ptfe-results thead { color: #fff; background: #203e60; }
.page-ptfe-o-rings .ptfe-results tbody th { font-weight: 500; color: #49566a; }
.page-ptfe-o-rings .ptfe-results td { font-weight: 700; color: #1d5c9a; white-space: nowrap; }
.page-ptfe-o-rings .ptfe-results tbody tr:nth-child(even) { background: #f3f6fa; }
.page-ptfe-o-rings .ptfe-report-link { display: inline-flex; align-items: center; gap: 10px; color: #1d5c9a; font-weight: 600; text-underline-offset: 4px; }
.page-ptfe-o-rings .ptfe-report-photo { border: 1px solid #dce3ec; border-radius: 12px; padding: 16px; background: #fff; }
.page-ptfe-o-rings .ptfe-report-photo img { display: block; width: 100%; height: auto; }
.page-ptfe-o-rings .ptfe-report-photo figcaption { font-size: .8rem; color: #5f6d80; line-height: 1.6; margin-top: 16px; }
.page-ptfe-o-rings .ptfe-review { display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: center; }
.page-ptfe-o-rings .ptfe-review p { max-width: 720px; margin-bottom: 0; }
.page-ptfe-o-rings .ptfe-review .btn { max-width: 290px; text-align: center; white-space: normal; }
.page-ptfe-o-rings .ptfe-related { display: flex; flex-wrap: wrap; gap: 20px 40px; border-top: 1px solid #d5dfe9; padding-top: 28px; margin-top: 36px; }
.page-ptfe-o-rings .ptfe-related a { color: #1d5c9a; font-weight: 600; font-size: .92rem; text-underline-offset: 4px; }
.page-ptfe-o-rings a:focus-visible { outline: 3px solid #e99726; outline-offset: 5px; }
@media (max-width: 1000px) {
  .page-ptfe-o-rings .ptfe-hero-grid { gap: 30px; }
  .page-ptfe-o-rings .ptfe-report-grid { gap: 32px; }
  .page-ptfe-o-rings .ptfe-review { grid-template-columns: 1fr; gap: 22px; }
  .page-ptfe-o-rings .ptfe-process-card > img { height: 300px; }
}
@media (max-width: 760px) {
  .page-ptfe-o-rings .ptfe-hero-copy > .btn { margin-right: 0; }
  .page-ptfe-o-rings .ptfe-hero { padding: 20px 0 36px; }
  .page-ptfe-o-rings .ptfe-hero-grid, .page-ptfe-o-rings .ptfe-intro-grid, .page-ptfe-o-rings .ptfe-report-grid, .page-ptfe-o-rings .ptfe-process-grid { grid-template-columns: minmax(0, 1fr); }
  .page-ptfe-o-rings .ptfe-hero h1 { font-size: clamp(1.85rem, 7.3vw, 2.5rem); }
  .page-ptfe-o-rings .ptfe-hero-photo img { height: 380px; }
  .page-ptfe-o-rings .ptfe-section { padding: 42px 0; }
  .page-ptfe-o-rings .ptfe-intro-grid { gap: 8px; }
  .page-ptfe-o-rings .ptfe-process-card > img { height: auto; max-height: 460px; aspect-ratio: 4 / 3; object-fit: cover; }
  .page-ptfe-o-rings .ptfe-process-card figcaption { padding: 20px; }
  .page-ptfe-o-rings .ptfe-report-photo { padding: 10px; }
  .page-ptfe-o-rings .ptfe-results th, .page-ptfe-o-rings .ptfe-results td { padding: 13px 10px; }
  .page-ptfe-o-rings .ptfe-related { flex-direction: column; gap: 18px; }
}