:root {
  color-scheme: light;
  --bg: oklch(0.985 0.006 205);
  --surface: oklch(0.965 0.008 205);
  --raised: oklch(0.998 0.004 205);
  --text: oklch(0.22 0.018 225);
  --muted: oklch(0.46 0.018 225);
  --border: oklch(0.84 0.012 210);
  --primary: oklch(0.48 0.115 172);
  --primary-hover: oklch(0.42 0.12 172);
  --steel: oklch(0.47 0.055 238);
  --warning: oklch(0.66 0.12 72);
  --shadow: 0 18px 42px oklch(0.42 0.03 225 / 0.12);
  --radius: 8px;
  --max: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.58;
}

a {
  color: inherit;
}

img,
svg {
  max-width: 100%;
}

:focus-visible {
  outline: 3px solid oklch(0.72 0.12 172);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--border);
  background: oklch(0.985 0.006 205 / 0.94);
  backdrop-filter: blur(12px);
}

.nav-wrap,
.section-inner,
.footer-inner {
  width: min(100% - 32px, var(--max));
  margin: 0 auto;
}

.nav-wrap {
  display: flex;
  min-height: 64px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 760;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid oklch(0.68 0.06 172);
  border-radius: 7px;
  background: linear-gradient(135deg, oklch(0.92 0.04 172), oklch(0.98 0.006 205));
  color: var(--primary-hover);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--raised);
  color: var(--text);
  cursor: pointer;
  font: inherit;
  padding: 8px 10px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.9rem;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--text);
}

.nav-links .nav-rfq {
  border-radius: 7px;
  background: var(--primary);
  color: oklch(0.99 0.004 172);
  padding: 9px 13px;
}

.nav-links .nav-rfq:hover {
  background: var(--primary-hover);
  color: oklch(0.99 0.004 172);
}

.language-switcher {
  position: relative;
  border-left: 1px solid var(--border);
  padding-left: 14px;
  font-size: 0.82rem;
}

.language-current {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--raised);
  color: var(--text);
  cursor: pointer;
  list-style: none;
  padding: 7px 10px;
  white-space: nowrap;
}

.language-current::-webkit-details-marker {
  display: none;
}

.language-current::after {
  content: "⌄";
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1;
}

.language-switcher[open] .language-current {
  border-color: oklch(0.68 0.06 172);
}

.language-switcher[open] .language-current::after {
  transform: rotate(180deg);
}

.language-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  display: grid;
  width: max-content;
  min-width: max-content;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--raised);
  box-shadow: var(--shadow);
  padding: 5px;
}

.language-option {
  display: flex;
  align-items: center;
  gap: 8px;
  border-radius: 6px;
  padding: 8px 10px;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
}

.language-option:hover {
  background: var(--surface);
  color: var(--text);
}

.flag-icon {
  display: block;
  width: 22px;
  height: 15px;
  flex: 0 0 auto;
  border: 1px solid oklch(0.72 0.012 210);
  border-radius: 2px;
  object-fit: cover;
  box-shadow: 0 0 0 1px oklch(0.99 0.004 205 / 0.65) inset;
}

.hero,
.page-hero,
.section {
  padding: 60px 0;
}

.hero {
  border-bottom: 1px solid var(--border);
  background:
    linear-gradient(90deg, oklch(0.985 0.006 205), oklch(0.94 0.018 205)),
    var(--bg);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  gap: 40px;
  align-items: center;
}

.eyebrow {
  color: var(--steel);
  font-size: 0.74rem;
  font-weight: 760;
  letter-spacing: 0.08em;
  margin: 0 0 10px;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  letter-spacing: 0;
  line-height: 1.12;
  margin: 0;
}

h1 {
  font-size: clamp(1.55rem, 2.25vw, 2.2rem);
  font-weight: 740;
  max-width: 700px;
}

h2 {
  font-size: clamp(1.15rem, 1.35vw, 1.42rem);
  line-height: 1.24;
  margin-bottom: 10px;
}

h3 {
  font-size: 0.98rem;
}

.lead {
  color: var(--muted);
  font-size: 1rem;
  max-width: 64ch;
}

.stage-note {
  max-width: 68ch;
  margin: 14px 0 0;
  border-left: 3px solid var(--primary);
  color: var(--text);
  font-size: 0.93rem;
  padding-left: 12px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 8px 14px;
  color: var(--text);
  font-size: 0.94rem;
  font-weight: 720;
  text-decoration: none;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease;
}

.button.primary {
  border-color: var(--primary);
  background: var(--primary);
  color: oklch(0.99 0.004 172);
}

.button.primary:hover {
  border-color: var(--primary-hover);
  background: var(--primary-hover);
}

.button.secondary:hover {
  background: var(--surface);
}

.template-button {
  margin-top: 10px;
}

.hero-visual {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--raised);
  box-shadow: var(--shadow);
  padding: 14px;
}

.technical-drawing {
  position: relative;
  min-height: 308px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 6px;
  background:
    linear-gradient(90deg, oklch(0.91 0.008 205) 1px, transparent 1px),
    linear-gradient(0deg, oklch(0.91 0.008 205) 1px, transparent 1px),
    oklch(0.985 0.004 205);
  background-size: 28px 28px;
}

.technical-drawing.compact {
  min-height: 170px;
  margin-top: 12px;
}

.technical-drawing.compact .spec-note {
  width: 250px;
}

.visual-proof {
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--raised);
}

.visual-proof img {
  display: block;
  width: 100%;
  aspect-ratio: 1200 / 760;
  object-fit: cover;
}

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

.evidence-photo {
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--raised);
}

.evidence-photo img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.evidence-photo figcaption {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.45;
  padding: 10px 12px;
}

.article-visual {
  overflow: hidden;
  margin: 22px 0 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--raised);
}

.article-visual img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.split-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.75fr);
  gap: 34px;
  align-items: center;
}

.screw-line {
  position: absolute;
  left: 9%;
  right: 9%;
  top: 45%;
  height: 22px;
  border-radius: 99px;
  background:
    repeating-linear-gradient(115deg, oklch(0.55 0.045 238) 0 9px, oklch(0.8 0.012 220) 9px 17px);
  box-shadow: inset 0 0 0 1px oklch(0.42 0.045 238 / 0.45);
}

.screw-end {
  position: absolute;
  top: 41%;
  width: 16%;
  height: 48px;
  border: 1px solid oklch(0.55 0.04 238);
  border-radius: 4px;
  background: oklch(0.93 0.01 220);
}

.screw-end.left {
  left: 4%;
}

.screw-end.right {
  right: 4%;
}

.dimension {
  position: absolute;
  border-top: 1px solid var(--primary);
  color: var(--primary-hover);
  font-size: 0.74rem;
  font-weight: 720;
}

.dimension.one {
  left: 10%;
  right: 10%;
  top: 28%;
  text-align: center;
}

.dimension.two {
  left: 8%;
  top: 64%;
  width: 28%;
  padding-top: 6px;
}

.spec-note {
  position: absolute;
  right: 6%;
  bottom: 7%;
  width: 210px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: oklch(0.998 0.004 205 / 0.95);
  padding: 12px;
  color: var(--muted);
  font-size: 0.8rem;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(280px, 0.55fr);
  gap: 24px;
  align-items: end;
  margin-bottom: 20px;
}

.section-heading p {
  color: var(--muted);
  margin: 0;
}

.grid {
  display: grid;
  gap: 16px;
}

.grid.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

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

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

.card,
.process-step,
.application-item,
.form-panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--raised);
  padding: 18px;
}

.guide-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--raised);
}

.guide-card-visual {
  display: block;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.guide-card-visual img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.guide-card-body {
  display: grid;
  flex: 1;
  align-content: start;
  gap: 8px;
  padding: 16px 18px 18px;
}

.guide-card-body h3,
.guide-card-body p {
  margin: 0;
}

.guide-card-body > a {
  align-self: end;
  margin-top: 4px;
  color: var(--primary-hover);
  font-weight: 760;
}

.guide-card-body > .guide-card-category {
  justify-self: start;
  align-self: start;
  margin-top: 0;
}

.guide-hub-intro {
  max-width: 1040px;
}

.guide-hub {
  max-width: 1120px;
}

.guide-hero {
  padding-bottom: 36px;
}

.guide-list-section {
  padding-top: 42px;
}

.guide-section + .guide-section {
  margin-top: 34px;
}

.guide-category-preview + .guide-category-preview,
.related-guides {
  margin-top: 34px;
}

.guide-section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(280px, 0.5fr);
  gap: 20px;
  align-items: end;
  margin-bottom: 16px;
}

.guide-section-heading h2 {
  margin: 0;
  font-size: 1.18rem;
}

.guide-section-heading p {
  margin: 0;
  color: var(--muted);
}

.guide-section-grid {
  align-items: stretch;
}

.guide-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.guide-categories a,
.guide-card-category {
  display: inline-grid;
  gap: 2px;
  max-width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--raised);
  color: var(--steel);
  font-size: 0.82rem;
  font-weight: 720;
  line-height: 1.25;
  padding: 7px 11px;
  text-decoration: none;
}

.guide-categories a:hover,
.guide-card-category:hover {
  border-color: oklch(0.72 0.045 172);
  color: var(--primary-hover);
}

.guide-categories a span {
  color: var(--primary-hover);
  font-size: 0.76rem;
}

.guide-categories a strong {
  color: var(--steel);
  font-size: 0.84rem;
}

.guide-category-grid {
  align-items: stretch;
}

.guide-category-card {
  display: grid;
  min-height: 100%;
  align-content: start;
  gap: 9px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--raised);
  padding: 18px;
}

.guide-category-card h2,
.guide-category-card p {
  margin: 0;
}

.guide-category-card h2 {
  font-size: 1.05rem;
}

.guide-category-card p {
  color: var(--muted);
}

.guide-category-card > a {
  align-self: end;
  margin-top: 6px;
  color: var(--primary-hover);
  font-weight: 760;
}

.guide-category-related {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.guide-rfq-closeout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 20px;
  align-items: center;
  margin-top: 26px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 22px;
}

.guide-rfq-closeout h2 {
  margin: 0 0 6px;
  font-size: 1.18rem;
}

.guide-rfq-closeout p {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
}

.card p,
.guide-card p,
.application-item p,
.process-step p {
  color: var(--muted);
  margin-bottom: 0;
}

.spec {
  display: inline-flex;
  margin-top: 14px;
  border-radius: 999px;
  background: oklch(0.93 0.025 172);
  color: var(--primary-hover);
  font-size: 0.78rem;
  font-weight: 720;
  padding: 5px 9px;
}

.band {
  border-block: 1px solid var(--border);
  background: var(--surface);
}

.process {
  counter-reset: step;
}

.process-step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: inline-flex;
  color: var(--steel);
  font-weight: 800;
  margin-bottom: 12px;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--raised);
}

table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
}

th,
td {
  border-bottom: 1px solid var(--border);
  padding: 11px 12px;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--surface);
  color: var(--text);
}

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

.page-hero {
  border-bottom: 1px solid var(--border);
  padding: 68px 0 48px;
}

.page-hero h1 {
  font-size: clamp(1.35rem, 1.8vw, 1.8rem);
  line-height: 1.22;
  max-width: 840px;
}

.content-narrow {
  max-width: 780px;
}

.article {
  max-width: 820px;
}

.article p,
.article li {
  color: var(--muted);
}

.article h2 {
  font-size: 1.18rem;
  margin-top: 30px;
}

.article-meta {
  color: var(--steel);
  font-size: 0.86rem;
  font-weight: 680;
  margin: 16px 0 0;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.tag-list span {
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--raised);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 680;
  padding: 4px 9px;
}

.checklist {
  display: grid;
  gap: 10px;
  padding: 0;
  list-style: none;
}

.checklist li {
  border-bottom: 1px solid var(--border);
  padding: 9px 0;
}

.checklist li::before {
  content: "✓";
  color: var(--primary);
  font-weight: 900;
  margin-right: 8px;
}

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

.rfq-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.44fr) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.contact-panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--raised);
  padding: 18px;
}

.contact-panel h2 {
  font-size: 1.08rem;
}

.contact-panel p {
  color: var(--muted);
}

.contact-grid {
  display: grid;
  gap: 9px;
  margin-top: 16px;
}

.contact-grid a,
.contact-grid div {
  display: grid;
  gap: 3px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--surface);
  padding: 10px 11px;
  text-decoration: none;
}

.contact-grid span {
  color: var(--muted);
  font-size: 0.78rem;
}

.contact-grid strong {
  overflow-wrap: anywhere;
  color: var(--text);
  font-size: 0.88rem;
}

.field.full {
  grid-column: 1 / -1;
}

label {
  display: grid;
  gap: 6px;
  color: var(--text);
  font-weight: 680;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: oklch(0.998 0.004 205);
  color: var(--text);
  font: inherit;
  padding: 10px 11px;
}

textarea {
  min-height: 132px;
  resize: vertical;
}

.help {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 400;
}

.feedback {
  display: none;
  grid-column: 1 / -1;
  border: 1px solid oklch(0.7 0.08 172);
  border-radius: 7px;
  background: oklch(0.94 0.035 172);
  color: var(--primary-hover);
  padding: 11px 13px;
  font-weight: 720;
}

.feedback.visible {
  display: block;
}

.site-footer {
  border-top: 1px solid var(--border);
  background: oklch(0.94 0.01 205);
  padding: 34px 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
}

@media (max-width: 900px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    border-bottom: 1px solid var(--border);
    background: var(--bg);
    padding: 14px 16px 18px;
  }

  .nav-links.open {
    display: flex;
  }

  .language-switcher {
    border-left: 0;
    padding-left: 0;
    align-self: flex-start;
  }

  .hero-grid,
  .split-hero,
  .section-heading,
  .footer-inner,
  .rfq-layout,
  .guide-section-heading,
  .guide-rfq-closeout {
    grid-template-columns: 1fr;
  }

  .grid.four,
  .grid.three,
  .grid.two,
  .evidence-gallery,
  .rfq-form {
    grid-template-columns: 1fr;
  }

  .hero,
  .page-hero,
  .section {
    padding: 40px 0;
  }

  .technical-drawing {
    min-height: 240px;
  }

  .technical-drawing.compact {
    min-height: 160px;
  }

  .spec-note {
    position: static;
    width: auto;
    margin: 170px 12px 12px;
  }

  .technical-drawing.compact .spec-note {
    width: auto;
    margin-top: 96px;
  }

  .guide-category-related {
    gap: 8px;
  }
}

@media (max-width: 520px) {
  .nav-wrap,
  .section-inner,
  .footer-inner {
    width: min(100% - 22px, var(--max));
  }

  .brand span:last-child {
    max-width: 190px;
  }

  .language-switcher {
    width: 100%;
    display: flex;
    justify-content: flex-end;
  }

  .language-menu {
    max-width: calc(100vw - 22px);
  }

  .language-current {
    max-width: 100%;
  }

  .guide-categories {
    gap: 7px;
  }

  .guide-categories a {
    width: 100%;
  }

  h1 {
    font-size: 1.35rem;
  }

  h2 {
    font-size: 1.12rem;
  }

  .actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }
}