:root {
  --paper: #e9eef0;
  --surface: #f5f7f8;
  --ink: #23343d;
  --steel: #52636d;
  --line: #a7b4bc;
  --signal: #005fcc;
  --sans: 'Barlow Semi Condensed', 'Arial Narrow', Arial, sans-serif;
  --mono: 'IBM Plex Mono', 'Courier New', monospace;
  --space: clamp(20px, 4vw, 64px);
  --section-space: clamp(52px, 7vw, 96px);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 18px/1.55 var(--sans); -webkit-font-smoothing: antialiased; }
::selection { background: var(--ink); color: var(--surface); }
a { color: inherit; text-underline-offset: 5px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
button, input, textarea { font: inherit; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid var(--signal); outline-offset: 5px; }
[hidden] { display: none !important; }
h1, h2, h3, p, figure, blockquote, dl, dd { margin: 0; }
h1, h2, h3 { font-weight: 600; }
h1 { font-size: clamp(44px, 7.3vw, 88px); line-height: 1.02; letter-spacing: -.035em; max-width: 940px; text-wrap: balance; }
h2 { font-size: clamp(30px, 3.1vw, 40px); line-height: 1.12; letter-spacing: -.02em; text-wrap: balance; }
h3 { font-size: 25px; line-height: 1.2; letter-spacing: -.01em; }
p { max-width: 65ch; overflow-wrap: anywhere; }
.page-shell { max-width: 1328px; margin-inline: auto; padding-inline: var(--space); }
.technical { font-family: var(--mono); font-weight: 400; }
.subtle { color: var(--steel); }
.skip-link { position: fixed; top: 10px; left: 20px; z-index: 10; padding: 12px 20px; background: var(--surface); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
.site-header { min-height: 104px; display: flex; flex-wrap: wrap; align-items: center; gap: 48px; border-bottom: 1px solid var(--line); }
.identity { display: inline-flex; align-items: center; gap: 13px; font-size: 23px; font-weight: 600; text-decoration: none; white-space: nowrap; }
.identity-symbol { display: grid; place-items: center; width: 38px; height: 38px; border: 1px solid var(--ink); font-size: 23px; letter-spacing: -.07em; position: relative; }
.identity-symbol::before, .identity-symbol::after { content: ''; position: absolute; height: 1px; width: 7px; background: var(--ink); top: 50%; }
.identity-symbol::before { left: -8px; }
.identity-symbol::after { right: -8px; }
.site-header nav { font-weight: 500; display: flex; flex-wrap: wrap; gap: 30px; margin-left: auto; }
.site-header nav a { text-decoration: none; }
.site-header nav a:hover { text-decoration: underline; }
.language-switch { font-weight: 500; display: flex; align-items: center; gap: 0; }
.language-switch button { border: 0; padding: 10px 8px; min-height: 44px; min-width: 40px; color: var(--steel); background: transparent; }
.language-switch button[aria-pressed="true"] { color: var(--ink); text-decoration: underline; text-underline-offset: 6px; text-decoration-thickness: 2px; }
.hero { padding-top: 29px; padding-bottom: 63px; position: relative; }
.hero-topline { display: flex; justify-content: space-between; gap: 20px; color: var(--steel); font-size: 16px; margin-bottom: 58px; }
.hero-topline .technical { font-size: 12px; padding-top: 3px; white-space: nowrap; }
.hero-bottom { margin-top: 40px; display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: 80px; align-items: end; }
.hero-description > p:first-child { max-width: 560px; font-size: 21px; line-height: 1.45; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 12px 25px; border: 1px solid transparent; font-weight: 600; font-size: 19px; line-height: 1.3; text-align: center; text-decoration: none; transition: box-shadow .15s ease, transform .15s ease; }
.primary { color: var(--surface); background: var(--signal); }
.button:hover { box-shadow: inset 0 0 0 2px var(--surface); text-decoration: none; }
.button:active { transform: translateY(1px); }
.button:disabled { cursor: wait; opacity: .75; }
.hero .button { margin-top: 29px; }
.hero-record { border-left: 1px solid var(--line); padding-left: 25px; position: relative; }
.hero-record p { white-space: pre-line; }
.hero-trust { margin-top: 14px; font-size: 15px; color: var(--steel); }
.hero-record .subtle { margin-top: 13px; font-size: 16px; }
.hero-rule { position: absolute; bottom: 0; left: 0; right: 0; height: 1px; background: var(--ink); transform-origin: left; animation: trace .85s cubic-bezier(.2,.7,.2,1) both; }
@keyframes trace { from { transform: scaleX(0); } to { transform: scaleX(1); } }
/* Section rhythm is owned here; internal components never override these margins. */
.sheet-section { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 3fr); gap: 48px; padding-block: var(--section-space); border-bottom: 1px solid var(--line); }
.section-heading h2 { max-width: 240px; }
.section-wide { grid-template-columns: minmax(0, 1fr); gap: 34px; }
.section-wide > .section-heading h2 { max-width: 900px; font-size: clamp(34px, 4vw, 52px); }
.section-content { min-width: 0; }
.lead { font-size: 25px; line-height: 1.4; }
#problem .section-content > p + p { margin-top: 21px; color: var(--steel); }
.service-row { display: grid; grid-template-columns: minmax(130px, 1fr) minmax(0, 2.2fr); gap: 24px; padding-block: 29px; border-bottom: 1px solid var(--line); }
.service-row:first-child { padding-top: 0; }
.service-name h3 { font-size: 20px; }
.service-headline { font-size: 27px; line-height: 1.2; font-weight: 600; margin-bottom: 13px; }
.service-detail { font-size: 15px; line-height: 1.5; color: var(--steel); margin-top: 15px; }
.support-services { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; padding-block: 32px 40px; }
.support-services p { margin-top: 15px; }
.industrial-service { border: 1px solid var(--ink); padding: 28px; position: relative; }
.industrial-service::before { content: ''; position: absolute; left: -1px; top: 24px; width: 4px; height: 48px; background: var(--ink); }
.industrial-heading { display: flex; align-items: start; gap: 22px; margin-bottom: 20px; }
.instrument-tag { font: 400 11px/1.5 var(--mono); border: 1px solid var(--steel); padding: 6px 8px; white-space: nowrap; }
.industrial-spec { margin-top: 24px; }
.industrial-spec > div { display: grid; grid-template-columns: 145px 1fr; gap: 15px; padding-block: 12px; border-top: 1px solid var(--line); font-size: 16px; }
.industrial-spec dt { color: var(--steel); }
.stack { margin-top: 36px; }
.stack h3 { font-size: 21px; margin-bottom: 18px; }
.stack dl > div { display: grid; grid-template-columns: 1fr 1.5fr; gap: 18px; padding-block: 8px; }
.stack dt { color: var(--steel); font-size: 16px; }
.stack dd { font-size: 12px; align-self: center; }
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); column-gap: 38px; row-gap: 35px; counter-reset: step; }
.steps li { min-width: 0; position: relative; padding-left: 40px; counter-increment: step; }
.steps li::before { content: counter(step); position: absolute; left: 0; top: 1px; font: 400 15px/26px var(--mono); border-bottom: 1px solid var(--ink); width: 24px; }
.steps p { margin-top: 13px; color: var(--steel); }
.section-intro { margin-bottom: 28px; color: var(--steel); }
.case-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); column-gap: 48px; }
.case { border-top: 1px solid var(--ink); padding-block: 23px 30px; display: flex; flex-direction: column; }
.case-kind { font-size: 15px; color: var(--steel); margin-bottom: 9px; }
.case h3 { font-size: 29px; margin-bottom: 17px; }
.case-featured { padding-block: 28px 40px; }
.case-featured h3 { font-size: clamp(30px, 3vw, 40px); }
.case-featured > p:not([class]) { font-size: 22px; line-height: 1.45; }
.case-compact h3 { font-size: 25px; margin-bottom: 12px; }
.case-compact { border-color: var(--line); padding-block: 24px; }
.case-meta { margin-top: 19px; font: 400 11px/1.6 var(--mono); }
.experience-section { background: var(--surface); padding-inline: 40px; }
.background-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 64px; align-items: start; }
.background-lead { font-size: clamp(30px, 3vw, 40px); line-height: 1.18; font-weight: 600; letter-spacing: -.015em; }
.background-grid p + p { margin-top: 22px; }
.portrait { align-self: start; padding-top: 6px; }
.portrait img { display: block; width: 100%; height: auto; aspect-ratio: 4 / 5; object-fit: cover; object-position: center 58%; }
.portrait figcaption { border-bottom: 1px solid var(--line); padding-block: 12px; font-weight: 600; }
.portrait figcaption span { display: block; font-size: 14px; font-weight: 500; color: var(--steel); }
.responsibility-record { margin-top: 28px; border-top: 1px solid var(--ink); }
.responsibility-record > div { padding-block: 12px; border-bottom: 1px solid var(--line); }
.responsibility-record dt { font-size: 14px; color: var(--steel); }
.responsibility-record dd { font-size: 18px; font-weight: 500; margin-top: 3px; }
.credentials { margin-top: 40px; border-top: 1px solid var(--line); font-size: 16px; }
.credentials > div { display: grid; grid-template-columns: 1fr 2fr; gap: 20px; padding-block: 16px; border-bottom: 1px solid var(--line); }
.credentials dt { color: var(--steel); }
.stats { display: grid; grid-template-columns: 1.3fr 1fr .8fr 1fr; border-block: 1px solid var(--ink); padding-block: 22px; gap: 16px; }
.stats strong { display: block; font-size: clamp(19px, 2.3vw, 28px); letter-spacing: -.04em; line-height: 1.4; }
.stats span { color: var(--steel); font-size: 15px; }
.reviews { display: grid; grid-template-columns: 1fr 1fr; gap: 35px; margin-top: 33px; }
.reviews blockquote { font-size: 23px; line-height: 1.35; }
.reviews blockquote p::before { content: '“'; }
.reviews blockquote p::after { content: '”'; }
.reviews figcaption { margin-top: 18px; font-size: 15px; color: var(--steel); }
.original-review { font-size: 16px; margin-top: 12px; }
.original-review summary { cursor: pointer; text-decoration: underline; text-underline-offset: 4px; }
.original-review p { margin-top: 12px; }
.endorsements { margin-block: 32px 23px; }
.endorsements > p { font-size: 15px; color: var(--steel); }
.endorsements ul { list-style: none; padding: 0; margin: 10px 0 0; display: flex; flex-wrap: wrap; gap: 8px 20px; }
.endorsements li { font-size: 16px; border-bottom: 1px solid var(--line); }
.text-link { display: inline-block; padding-block: 5px; font-weight: 600; }
.faq-list details { border-top: 1px solid var(--line); }
.faq-list details:last-child { border-bottom: 1px solid var(--line); }
.faq-list summary { cursor: pointer; list-style: none; font-size: 23px; line-height: 1.3; padding: 21px 36px 21px 0; position: relative; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: '+'; position: absolute; right: 4px; top: 18px; font-size: 28px; }
.faq-list details[open] summary::after { content: '−'; }
.faq-list summary:hover { text-decoration: underline; text-underline-offset: 5px; }
.faq-list details > p { padding: 0 25px 24px 0; color: var(--steel); }
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 64px; }
.contact-links { display: flex; flex-direction: column; align-items: start; gap: 10px; margin-top: 26px; }
.contact-links a { overflow-wrap: anywhere; }
.field + .field { margin-top: 20px; }
.field label { display: block; font-size: 17px; margin-bottom: 7px; }
.field input, .field textarea { width: 100%; border: 1px solid var(--steel); border-radius: 0; padding: 11px 12px; color: var(--ink); background: var(--surface); min-height: 48px; }
.field textarea { resize: vertical; min-height: 150px; }
.field-hint { margin-top: 6px; font-size: 14px; line-height: 1.4; color: var(--steel); }
#contact-form > .button { margin-top: 24px; width: 100%; }
#form-status:not(:empty) { margin-top: 16px; padding: 12px; border-left: 3px solid var(--ink); background: var(--surface); font-size: 16px; }
#form-status[data-state="sent"] { border-color: var(--signal); }
#email-fallback { margin-top: 10px; }
footer { display: flex; justify-content: space-between; gap: 20px; padding-block: 26px 35px; font-size: 15px; color: var(--steel); }
@media (min-width: 1440px) { .page-shell { border-inline: 1px solid var(--line); } }
@media (max-width: 1000px) {
  .sheet-section:not(.section-wide) { grid-template-columns: minmax(0, 1fr) minmax(0, 2.7fr); gap: 30px; }
  .site-header { gap: 26px; }
  .site-header nav { gap: 20px; }
  .hero-bottom { gap: 40px; }
  .service-row { grid-template-columns: 1fr; gap: 12px; }
  .service-name h3 { font-size: 17px; color: var(--steel); }
  .industrial-heading { flex-direction: column; gap: 15px; }
  .industrial-spec > div { grid-template-columns: 1fr; gap: 5px; }
  .background-grid { grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 28px; }
  .experience-section { padding-inline: 28px; }
  .contact-grid { grid-template-columns: 1fr; gap: 30px; }
  .contact-links { flex-direction: row; flex-wrap: wrap; gap: 12px 24px; }
}
@media (max-width: 700px) {
  .site-header { min-height: auto; padding-block: 16px 10px; flex-wrap: wrap; justify-content: space-between; gap: 15px; }
  .site-header nav { order: 3; width: 100%; margin-left: 0; gap: 28px; }
  .site-header nav a { padding-block: 5px; }
  .hero { padding-top: 20px; padding-bottom: 32px; }
  .hero-topline { margin-bottom: 24px; font-size: 14px; }
  .hero-topline .technical { font-size: 10px; }
  .hero-bottom { margin-top: 23px; grid-template-columns: 1fr; gap: 24px; }
  .hero-description > p:first-child { font-size: 20px; }
  .hero-record { padding-left: 12px; }
  .hero-record p { white-space: normal; }
  .hero-record .subtle { margin-top: 5px; font-size: 14px; }
  .hero-record > p { font-size: 16px; }
  .sheet-section:not(.section-wide) { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .section-wide { gap: 28px; }
  .experience-section { padding-inline: 20px; }
  .case-grid { grid-template-columns: minmax(0, 1fr); }
  .section-heading h2 { max-width: 100%; }
  .section-heading { max-width: 420px; }
  .lead { font-size: 23px; }
  .service-headline { font-size: 28px; }
  .industrial-service { padding: 22px; }
  .background-grid { grid-template-columns: 1fr; }
  .portrait { max-width: 360px; width: 100%; margin-top: 8px; }
  .background-lead { font-size: 31px; }
  .stats strong { font-size: 22px; }
  .stats { gap: 20px; grid-template-columns: 1fr 1fr; }
  .contact-grid { gap: 30px; }
  footer { align-items: start; flex-direction: column; gap: 5px; }
}
@media (max-width: 450px) {
  .support-services, .steps, .case-grid, .reviews { grid-template-columns: 1fr; }
  .support-services { gap: 27px; }
  .steps { row-gap: 27px; }
  .case { padding-bottom: 29px; }
  .stack dl > div { grid-template-columns: 1fr; gap: 4px; padding-block: 10px; }
  .credentials > div { grid-template-columns: 1fr; gap: 4px; }
  .hero-topline > span:first-child { max-width: 200px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-rule { animation: none; }
  .button { transition: none; }
}