/* =========================================================================
   CHILVERSTONE ENGINEERING — OPTION 02 "BLUEPRINT"
   A light, technical, engineering-drawing design system.
   Hand-written CSS3. No frameworks. No build step.
   ---------------------------------------------------------------------
   01 Tokens          09 Buttons
   02 Reset           10 Cards
   03 Base type       11 Tables / specs
   04 Layout          12 Lists, steps, notes
   05 Utilities       13 Gallery, filter, lightbox
   06 Blueprint grid  14 Forms
   07 Frames/ticks    15 CTA band
   08 Header + nav    16 Footer
                      17 Motion, responsive, print
   ========================================================================= */

/* 01 ------------------------------------------------------------------ TOKENS */
:root{
  /* Brand palette — exact values from the brief */
  --black:#0A0A0A;
  --charcoal:#17181B;
  --silver:#C7C9CE;
  --blue:#2977FF;
  --white:#FFFFFF;

  /* Derived neutrals (no extra hues introduced) */
  --paper:#F4F5F7;
  --panel:#FFFFFF;
  --ink:#17181B;
  --ink-2:#22252A;
  --ink-3:#33363C;
  --steel:#8E939B;
  --grey:#5B6068;          /* secondary text   — 6.3:1 on white, 5.8:1 on paper */
  --grey-soft:#676C75;     /* tertiary text    — 5.2:1 on white, 4.8:1 on paper */

  /* Derived accents for text (shade of the brand blue) */
  --blue-ink:#1E63E0;      /* blue TEXT on light  — 5.4:1 on white */
  --blue-light:#7FA8FF;    /* blue TEXT on dark   — 7.1:1 on charcoal */

  /* Hairlines + rules — silver, never used as body text */
  --hairline:rgba(199,201,206,.4);
  --hairline-strong:rgba(199,201,206,.75);
  --hairline-dark:rgba(199,201,206,.18);
  --rule:rgba(23,24,27,.12);

  /* Blueprint grid tints */
  --grid-fine:rgba(41,119,255,.055);
  --grid-major:rgba(41,119,255,.11);

  /* Type */
  --font-head:"Archivo","Archivo Narrow","Helvetica Neue",Arial,system-ui,sans-serif;
  --font-body:"Inter","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --font-mono:"IBM Plex Mono","SFMono-Regular",Consolas,"Liberation Mono",Menlo,"Courier New",monospace;

  --fs-h1:clamp(2.15rem,5.4vw,4.35rem);
  --fs-h2:clamp(1.6rem,2.9vw,2.5rem);
  --fs-h3:clamp(1.1rem,1.5vw,1.35rem);
  --fs-h4:clamp(1rem,1.1vw,1.1rem);
  --fs-body:clamp(1rem,.3vw + .94rem,1.0625rem);
  --fs-lead:clamp(1.06rem,.6vw + .95rem,1.28rem);
  --fs-mono:.75rem;
  --fs-mono-sm:.6875rem;

  /* Space scale */
  --s-1:4px;  --s-2:8px;  --s-3:12px; --s-4:16px;
  --s-5:24px; --s-6:32px; --s-7:48px; --s-8:64px;
  --s-9:88px; --s-10:112px;

  /* Geometry — square corners, drafting-sheet proportions */
  --radius:0;
  --rail-w:clamp(150px,15vw,214px);
  --shell:1380px;
  --gutter:clamp(20px,4vw,56px);

  /* Motion */
  --t-fast:140ms cubic-bezier(.4,0,.2,1);
  --t-mid:260ms cubic-bezier(.4,0,.2,1);
  --t-slow:520ms cubic-bezier(.22,.61,.36,1);
}

/* 02 ------------------------------------------------------------------ RESET */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,p,ul,ol,li,figure,figcaption,blockquote,dl,dd,address{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,iframe,video{max-width:100%;display:block}
img{height:auto}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
table{border-collapse:collapse;border-spacing:0}
a{color:inherit;text-decoration:none}
hr{border:0;border-top:1px solid var(--hairline);margin:0}
[hidden]{display:none}

/* 03 -------------------------------------------------------------- BASE TYPE */
body{
  font-family:var(--font-body);
  font-size:var(--fs-body);
  line-height:1.65;
  color:var(--ink-2);
  background-color:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden}

h1,h2,h3,h4{
  font-family:var(--font-head);
  font-weight:800;
  color:var(--ink);
  line-height:1.04;
  letter-spacing:-.01em;
  text-transform:uppercase;
  text-wrap:balance;
}
h1{font-size:var(--fs-h1);letter-spacing:-.015em}
h2{font-size:var(--fs-h2);letter-spacing:-.005em}
h3{font-size:var(--fs-h3);line-height:1.15;letter-spacing:.005em}
h4{font-size:var(--fs-h4);line-height:1.2;letter-spacing:.02em}

p{max-width:74ch}
strong,b{font-weight:600;color:var(--ink)}
a{color:var(--blue-ink)}
a:hover{color:var(--blue-ink)}
small{font-size:.8125rem}
address{font-style:normal}
abbr[title]{text-decoration:none;border-bottom:1px dotted var(--silver);cursor:help}

:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
:focus:not(:focus-visible){outline:none}

.skip-link{
  position:absolute;left:var(--s-4);top:-100px;z-index:200;
  background:var(--ink);color:var(--white);
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);text-transform:uppercase;
  letter-spacing:.16em;padding:12px 18px;transition:top var(--t-fast);
}
.skip-link:focus{top:var(--s-4);color:var(--white)}

/* 04 ------------------------------------------------------------------ LAYOUT */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.shell--narrow{max-width:940px}

main{display:block}

.section{position:relative;border-top:1px solid var(--hairline)}
.section--plain{background:var(--paper)}
.section--panel{background:var(--panel)}
.section--ink{background:var(--charcoal);border-top-color:rgba(199,201,206,.28)}
.section--ink h2,.section--ink h3,.section--ink h4{color:var(--white)}
.section--ink p{color:rgba(244,245,247,.86)}

/* Drafting sheet: left label rail + wide right column, joined by a thin rule */
.sheet{display:grid;grid-template-columns:var(--rail-w) minmax(0,1fr);align-items:start}
.sheet__rail{
  position:relative;align-self:stretch;
  border-right:1px solid var(--hairline);
  padding:var(--s-9) var(--s-5) var(--s-9) 0;
}
.sheet__body{padding:var(--s-9) 0 var(--s-9) clamp(24px,4vw,64px);min-width:0}
.sheet--tight .sheet__rail{padding-top:var(--s-8);padding-bottom:var(--s-8)}
.sheet--tight .sheet__body{padding-top:var(--s-8);padding-bottom:var(--s-8)}

.rail-label{position:sticky;top:112px}
.rail-label .rail-num{display:block}

.sec-head{margin-bottom:var(--s-7);max-width:64ch}
.sec-head p{margin-top:var(--s-4)}

.lead{font-size:var(--fs-lead);line-height:1.55;color:var(--ink-3)}
.prose p + p{margin-top:var(--s-4)}
.prose h3{margin-top:var(--s-7)}
.prose ul{margin-top:var(--s-4)}
.prose > *:first-child{margin-top:0}

.grid{display:grid;gap:var(--s-4)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid--gap-lg{gap:var(--s-5)}

.split{display:grid;gap:clamp(28px,4vw,64px);align-items:start}
.split--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.split--sidebar{grid-template-columns:minmax(0,1.6fr) minmax(0,1fr)}

.stack > * + *{margin-top:var(--s-4)}
.stack-lg > * + *{margin-top:var(--s-6)}
.center{text-align:center}

/* 05 --------------------------------------------------------------- UTILITIES */
.mono{
  font-family:var(--font-mono);
  font-size:var(--fs-mono);
  font-weight:500;
  letter-spacing:.14em;
  text-transform:uppercase;
  line-height:1.5;
  color:var(--grey);
}
.mono--sm{font-size:var(--fs-mono-sm)}
.mono--blue{color:var(--blue-ink)}
.mono--ink{color:var(--ink)}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.visually-hidden{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0
}
.text-link{
  font-family:var(--font-mono);font-size:var(--fs-mono);text-transform:uppercase;
  letter-spacing:.14em;color:var(--blue-ink);
  border-bottom:1px solid var(--blue);padding-bottom:2px;
  display:inline-flex;align-items:center;gap:8px;
  transition:color var(--t-fast),border-color var(--t-fast),background var(--t-fast);
}
.text-link:hover,.text-link:focus-visible{color:var(--white);background:var(--blue-ink);border-color:var(--blue-ink)}
.text-link svg{width:14px;height:14px;flex:none}

.tick-rule{height:1px;background:var(--hairline-strong);width:100%}
.blue-rule{height:2px;background:var(--blue);width:56px}
.marker{display:inline-block;width:8px;height:8px;background:var(--blue);flex:none}

.kv{display:flex;gap:var(--s-3);align-items:baseline}
.kv dt{font-family:var(--font-mono);font-size:var(--fs-mono-sm);letter-spacing:.14em;text-transform:uppercase;color:var(--grey);min-width:7.5rem}
.kv dd{font-family:var(--font-mono);font-size:var(--fs-mono);letter-spacing:.04em;color:var(--ink)}

.mt-2{margin-top:var(--s-2)}
.mt-3{margin-top:var(--s-3)}
.mt-4{margin-top:var(--s-4)}
.mt-5{margin-top:var(--s-5)}
.mt-6{margin-top:var(--s-6)}
.mt-7{margin-top:var(--s-7)}
.mb-4{margin-bottom:var(--s-4)}
.small{font-size:.9375rem;color:var(--grey)}
.on-dark{color:var(--white)}
.deflist > div + div{margin-top:var(--s-4)}
.deflist dt{color:var(--grey)}
.deflist dd{margin-top:4px;color:var(--ink)}
.card__title{margin:var(--s-2) 0;color:var(--ink)}
.card__note{font-size:.875rem;color:var(--grey)}
.cta-band__kicker{color:var(--blue-light)}
.status-line{font-family:var(--font-mono);font-size:var(--fs-mono-sm);letter-spacing:.1em;text-transform:uppercase;color:var(--grey)}

/* Compact image tiles used for work previews */
.preview-tile{
  display:block;border:1px solid var(--hairline-strong);background:var(--panel);
  transition:border-color var(--t-mid);
}
.preview-tile:hover{border-color:var(--blue)}
.preview-tile img{width:100%;aspect-ratio:3/2;object-fit:cover;border-bottom:1px solid var(--hairline)}
.preview-tile__body{padding:14px 16px;display:flex;flex-direction:column;gap:5px}
.preview-tile__ref{font-family:var(--font-mono);font-size:var(--fs-mono-sm);letter-spacing:.16em;color:var(--blue-ink)}
.preview-tile__title{font-family:var(--font-head);font-weight:700;text-transform:uppercase;font-size:.9375rem;letter-spacing:.01em;color:var(--ink);line-height:1.2}
.preview-tile__note{font-size:.8125rem;color:var(--grey)}

/* 06 --------------------------------------------------------- BLUEPRINT GRID */
.blueprint{
  background-color:var(--paper);
  background-image:
    repeating-linear-gradient(to right,var(--grid-major) 0 1px,transparent 1px 100px),
    repeating-linear-gradient(to bottom,var(--grid-major) 0 1px,transparent 1px 100px),
    repeating-linear-gradient(to right,var(--grid-fine) 0 1px,transparent 1px 20px),
    repeating-linear-gradient(to bottom,var(--grid-fine) 0 1px,transparent 1px 20px);
}
.blueprint--panel{
  background-color:var(--panel);
  background-image:
    repeating-linear-gradient(to right,var(--grid-major) 0 1px,transparent 1px 100px),
    repeating-linear-gradient(to bottom,var(--grid-major) 0 1px,transparent 1px 100px),
    repeating-linear-gradient(to right,var(--grid-fine) 0 1px,transparent 1px 20px),
    repeating-linear-gradient(to bottom,var(--grid-fine) 0 1px,transparent 1px 20px);
  background-size:auto,auto,auto,auto;
}
.blueprint--flat{background-image:none}
.grid-block{
  position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:
    repeating-linear-gradient(to right,var(--grid-major) 0 1px,transparent 1px 100px),
    repeating-linear-gradient(to bottom,var(--grid-major) 0 1px,transparent 1px 100px),
    repeating-linear-gradient(to right,var(--grid-fine) 0 1px,transparent 1px 20px),
    repeating-linear-gradient(to bottom,var(--grid-fine) 0 1px,transparent 1px 20px);
}
.section > .shell{position:relative;z-index:1}

/* 07 ------------------------------------------- DRAWING FURNITURE: FRAMES,TICKS */
.frame{
  position:relative;
  border:1px solid var(--hairline-strong);
  background:var(--panel);
}
.frame::before,.frame::after{
  content:"";position:absolute;width:14px;height:14px;pointer-events:none;z-index:2;
}
.frame::before{top:-1px;right:-1px;border-top:2px solid var(--blue);border-right:2px solid var(--blue)}
.frame::after{bottom:-1px;left:-1px;border-bottom:2px solid var(--blue);border-left:2px solid var(--blue)}
.frame__marks{position:absolute;inset:0;pointer-events:none;z-index:2}
.frame__marks::before,.frame__marks::after{content:"";position:absolute;width:14px;height:14px}
.frame__marks::before{top:-1px;left:-1px;border-top:2px solid var(--blue);border-left:2px solid var(--blue)}
.frame__marks::after{bottom:-1px;right:-1px;border-bottom:2px solid var(--blue);border-right:2px solid var(--blue)}

.frame--ink{border-color:rgba(199,201,206,.32);background:var(--charcoal)}
.frame--flat::before,.frame--flat::after,.frame--flat > .frame__marks{display:none}
.frame__media{position:relative;overflow:hidden}
.frame__media img{width:100%;height:100%;object-fit:cover;aspect-ratio:3/2}

/* Monospace title block strip */
.titleblock{
  display:flex;flex-wrap:wrap;align-items:center;
  border-top:1px solid var(--hairline-strong);
  background:var(--panel);
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);
  letter-spacing:.16em;text-transform:uppercase;color:var(--grey);
}
.titleblock > span{
  padding:12px clamp(12px,2vw,26px);
  border-right:1px solid var(--hairline);
  white-space:nowrap;
}
.titleblock > span:last-child{border-right:0;margin-left:auto;color:var(--grey-soft)}
.titleblock .tb-key{color:var(--blue-ink)}

/* Annotation label with a leader line */
.annotation{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);
  letter-spacing:.16em;text-transform:uppercase;color:var(--grey);
}
.annotation::before{content:"";width:26px;height:1px;background:var(--blue);flex:none}
.annotation--plain::before{display:none}

/* ------------------------------------------------ HERO / SHEET HEAD DERIVATIVES */
.hero{position:relative;overflow:hidden;background-color:var(--paper)}
.hero__frame{
  position:absolute;inset:clamp(10px,1.6vw,22px);z-index:0;pointer-events:none;
  border:1px solid var(--hairline);
}
.hero__frame::before,.hero__frame::after{content:"";position:absolute;width:16px;height:16px}
.hero__frame::before{top:-1px;left:-1px;border-top:2px solid var(--blue);border-left:2px solid var(--blue)}
.hero__frame::after{bottom:-1px;right:-1px;border-bottom:2px solid var(--blue);border-right:2px solid var(--blue)}

.hero__in{
  position:relative;z-index:1;
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:clamp(30px,4vw,72px);align-items:center;
  padding-block:clamp(48px,7vw,104px) clamp(40px,5vw,72px);
}
.hero__kicker{
  display:inline-flex;align-items:center;gap:12px;
  color:var(--grey);margin-bottom:var(--s-5);
}
.hero__kicker .marker{width:9px;height:9px}
.hero__title{max-width:19ch}
.hero__title .accent{color:var(--blue-ink)}
.hero__sub{margin-top:var(--s-5);font-size:var(--fs-lead);line-height:1.55;color:var(--ink-3);max-width:52ch}
.hero__ctas{display:flex;flex-wrap:wrap;gap:var(--s-3);margin-top:var(--s-7)}
.hero__media{position:relative}
.hero__media .frame__media{aspect-ratio:3/2}
.hero__figcap{
  display:flex;justify-content:space-between;gap:var(--s-4);flex-wrap:wrap;
  padding-top:12px;border-top:1px solid var(--hairline);margin-top:12px;
}
.hero__dim{
  position:absolute;left:-1px;top:calc(50% - 30px);
  writing-mode:vertical-rl;transform:rotate(180deg);
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);letter-spacing:.2em;
  text-transform:uppercase;color:var(--grey-soft);
  background:var(--panel);border:1px solid var(--hairline);border-left:0;
  padding:8px 5px;
}

.trust-strip{
  display:flex;flex-wrap:wrap;align-items:center;
  gap:10px 0;margin-top:var(--s-7);padding-top:var(--s-4);
  border-top:1px solid var(--hairline-strong);
}
.trust-strip li{
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;color:var(--grey);
  padding:0 14px;border-right:1px solid var(--hairline);
}
.trust-strip li:first-child{padding-left:0}
.trust-strip li:last-child{border-right:0}
.trust-strip li strong{color:var(--ink);font-weight:600}

/* Page header for inner pages */
.page-head{position:relative;overflow:hidden;background-color:var(--paper);border-bottom:1px solid var(--hairline-strong)}
.page-head__in{
  position:relative;z-index:1;
  padding-block:clamp(34px,5vw,70px) clamp(30px,4vw,54px);
  display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);
  gap:clamp(24px,4vw,64px);align-items:end;
}
.page-head__side p{font-size:.9375rem;color:var(--grey)}
.breadcrumb{display:flex;flex-wrap:wrap;gap:9px;align-items:center;margin-bottom:var(--s-5)}
.breadcrumb li{display:flex;gap:9px;align-items:center}
.breadcrumb li + li::before{content:"/";color:var(--silver)}
.breadcrumb a{color:var(--grey);transition:color var(--t-fast)}
.breadcrumb a:hover{color:var(--blue-ink)}
.breadcrumb [aria-current="page"]{color:var(--ink)}

/* 08 ---------------------------------------------------- HEADER, SPEC BAR, NAV */
.spec-bar{background:var(--charcoal);color:var(--silver)}
.spec-bar__in{
  display:flex;align-items:center;justify-content:space-between;gap:var(--s-4);
  min-height:34px;padding-block:6px;flex-wrap:wrap;
}
.spec-bar .mono{color:rgba(199,201,206,.92);font-size:var(--fs-mono-sm);letter-spacing:.18em}
.spec-bar__meta{color:var(--blue-light)}
.spec-bar__meta .sep{color:rgba(199,201,206,.5)}

.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--hairline-strong);
  transition:box-shadow var(--t-mid);
}
.site-header.is-stuck{box-shadow:0 10px 30px -22px rgba(23,24,27,.55)}
.site-header__in{display:flex;align-items:center;gap:clamp(14px,2vw,34px);min-height:78px}

.brand{display:flex;align-items:center;gap:13px;flex:none;color:var(--ink)}
.brand__mark{width:44px;height:44px;flex:none}
.brand__lockup{display:flex;flex-direction:column;gap:2px;line-height:1}
.brand__name{
  font-family:var(--font-head);font-weight:800;font-size:1.0625rem;
  letter-spacing:.055em;text-transform:uppercase;color:var(--ink);
}
.brand__rule{display:block;width:100%;height:1px;background:var(--hairline-strong)}
.brand__sub{
  font-family:var(--font-mono);font-size:.5rem;font-weight:500;
  letter-spacing:.34em;text-transform:uppercase;color:var(--grey);
}

.nav-toggle{
  display:none;align-items:center;gap:10px;margin-left:auto;
  border:1px solid var(--hairline-strong);padding:10px 12px;background:var(--panel);
  color:var(--ink);transition:border-color var(--t-fast),background var(--t-fast);
}
.nav-toggle:hover{border-color:var(--blue)}
.nav-toggle__bars{display:block;width:18px}
.nav-toggle__bars span{display:block;height:2px;background:var(--ink);margin:3px 0;transition:transform var(--t-fast),opacity var(--t-fast)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.nav-toggle__label{font-family:var(--font-mono);font-size:var(--fs-mono-sm);letter-spacing:.16em;text-transform:uppercase}

.nav-panel{display:flex;align-items:center;gap:clamp(14px,2vw,34px);flex:1 1 auto;min-width:0}
.nav-panel__head{display:none}
.main-nav{flex:1 1 auto;min-width:0}
.main-nav__list{display:flex;align-items:center;gap:clamp(10px,1.4vw,24px);flex-wrap:wrap}
.main-nav__list a{
  position:relative;display:block;
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);font-weight:500;
  letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2);
  padding:10px 2px;transition:color var(--t-fast);
}
.main-nav__list a::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;
  background:var(--blue);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t-mid);
}
.main-nav__list a:hover{color:var(--blue-ink)}
.main-nav__list a:hover::after{transform:scaleX(1)}
.main-nav__list a[aria-current="page"]{color:var(--ink);font-weight:600}
.main-nav__list a[aria-current="page"]::after{transform:scaleX(1)}
.main-nav__list a[aria-current="page"]::before{
  content:"";position:absolute;left:50%;top:2px;width:5px;height:5px;background:var(--blue);
  transform:translateX(-50%);
}

.header-actions{display:flex;align-items:center;gap:var(--s-4);flex:none}
.header-phone{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:var(--fs-mono);letter-spacing:.06em;
  color:var(--ink);white-space:nowrap;transition:color var(--t-fast);
}
.header-phone svg{width:16px;height:16px;color:var(--blue)}
.header-phone:hover{color:var(--blue-ink)}

.nav-backdrop{
  position:fixed;inset:0;z-index:89;background:rgba(23,24,27,.5);
  opacity:0;visibility:hidden;transition:opacity var(--t-mid),visibility var(--t-mid);
}
.nav-backdrop.is-open{opacity:1;visibility:visible}

/* 09 ------------------------------------------------------------------ BUTTONS */
.btn{
  --btn-bg:transparent;--btn-fg:var(--ink);--btn-bd:var(--hairline-strong);
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-family:var(--font-mono);font-size:var(--fs-mono);font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;
  padding:15px 26px;border-radius:var(--radius);
  background:var(--btn-bg);color:var(--btn-fg);border:1px solid var(--btn-bd);
  transition:background-color var(--t-mid),color var(--t-mid),border-color var(--t-mid);
  text-align:center;
}
.btn svg{width:16px;height:16px;flex:none}
.btn:hover,.btn:focus-visible{background:var(--blue-ink);color:var(--white);border-color:var(--blue-ink)}
.btn--primary{--btn-bg:var(--ink);--btn-fg:var(--white);--btn-bd:var(--ink)}
.btn--primary:hover,.btn--primary:focus-visible{background:var(--blue-ink);border-color:var(--blue-ink);color:var(--white)}
.btn--secondary{--btn-bg:transparent;--btn-fg:var(--blue-ink);--btn-bd:var(--blue)}
.btn--secondary:hover,.btn--secondary:focus-visible{background:var(--blue-ink);color:var(--white)}
.btn--ghost{--btn-bg:transparent;--btn-fg:var(--ink);--btn-bd:var(--hairline-strong)}
.btn--on-dark{--btn-bg:transparent;--btn-fg:var(--white);--btn-bd:rgba(199,201,206,.5)}
.btn--sm{padding:11px 18px;font-size:var(--fs-mono-sm)}
.btn--block{width:100%}

/* 10 -------------------------------------------------------------------- CARDS */
.card{
  position:relative;background:var(--panel);
  border:1px solid var(--hairline-strong);border-radius:var(--radius);
  padding:var(--s-6) var(--s-5) var(--s-5);
  display:flex;flex-direction:column;gap:var(--s-3);
  transition:border-color var(--t-mid),transform var(--t-mid),box-shadow var(--t-mid);
}
.card::after{
  content:"";position:absolute;top:-1px;right:-1px;width:12px;height:12px;
  border-top:2px solid var(--blue);border-right:2px solid var(--blue);
  opacity:0;transition:opacity var(--t-mid);
}
.card:hover{border-color:var(--blue);box-shadow:0 18px 40px -34px rgba(23,24,27,.7)}
.card:hover::after{opacity:1}
.card__index{
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);font-weight:600;
  letter-spacing:.18em;color:var(--blue-ink);
}
.card__icon{width:34px;height:34px;color:var(--blue);margin-bottom:var(--s-1)}
.card__icon svg{width:100%;height:100%}
.card h3{font-family:var(--font-head);text-transform:uppercase}
.card__body{display:flex;flex-direction:column;gap:var(--s-3);flex:1 1 auto}
.card__body p{font-size:.9375rem;color:var(--grey)}
.card__foot{margin-top:auto;padding-top:var(--s-3);border-top:1px solid var(--hairline)}
.card--flat:hover{border-color:var(--hairline-strong);box-shadow:none}
.card--dark{background:var(--charcoal);border-color:rgba(199,201,206,.24)}
.card--dark h3{color:var(--white)}
.card--dark p{color:rgba(244,245,247,.82)}
.card--dark .card__index{color:var(--blue-light)}

.panel{
  position:relative;background:var(--panel);border:1px solid var(--hairline-strong);
  padding:clamp(24px,3vw,44px);
}
.panel--blue{background:var(--panel);border-left:3px solid var(--blue)}
.panel--ink{background:var(--charcoal);border-color:rgba(199,201,206,.24)}
.panel--ink h3,.panel--ink h2{color:var(--white)}
.panel--ink p{color:rgba(244,245,247,.84)}
.panel--ink .mono{color:rgba(199,201,206,.9)}

.divider{height:1px;background:var(--hairline);border:0;margin-block:var(--s-6)}

/* Repeating content blocks (service entries, machine entries) */
.service{border-top:1px solid var(--hairline-strong);padding-top:var(--s-6)}
.service + .service{margin-top:var(--s-8)}
.service__head{display:flex;flex-direction:column;gap:6px;margin-bottom:var(--s-5)}
.service__head h3{font-size:clamp(1.2rem,1.9vw,1.6rem)}
.service .prose h4{margin-top:var(--s-5)}

.spec-list{margin-top:var(--s-4);border-top:1px solid var(--hairline)}
.spec-list > div{
  display:flex;gap:var(--s-3);justify-content:space-between;align-items:baseline;
  padding:9px 0;border-bottom:1px solid var(--hairline);
}
.spec-list dt{
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);letter-spacing:.1em;
  text-transform:uppercase;color:var(--grey);
}
.spec-list dd{
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);letter-spacing:.1em;
  color:var(--ink);text-align:right;white-space:nowrap;
}
.card--machine{padding:var(--s-5)}
.card--machine img{width:100%;aspect-ratio:3/2;object-fit:cover;background:var(--paper)}
.card--machine > p{font-size:.9375rem;color:var(--grey)}
.card--machine .card__note{font-size:.8125rem;color:var(--grey-soft)}

.index-list{border-top:1px solid var(--hairline-strong)}
.index-list li{border-bottom:1px solid var(--hairline)}
.index-list a{
  display:flex;align-items:baseline;gap:var(--s-4);padding:11px 0;
  transition:color var(--t-fast),padding-left var(--t-fast);
}
.index-list a:hover{color:var(--blue-ink);padding-left:6px}
.index-list .ref{
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);letter-spacing:.14em;
  color:var(--blue-ink);min-width:5rem;flex:none;
}
.index-list .lbl{font-size:.9375rem;color:var(--ink)}
.index-list .dots{
  flex:1 1 auto;border-bottom:1px dotted var(--silver);transform:translateY(-4px);
}

/* 11 ----------------------------------------------------------- TABLES / SPECS */
.table-wrap{
  overflow-x:auto;border:1px solid var(--hairline-strong);background:var(--panel);
  -webkit-overflow-scrolling:touch;
}
.spec-table{width:100%;min-width:560px;text-align:left}
.spec-table caption{
  caption-side:top;text-align:left;
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);font-weight:600;
  letter-spacing:.18em;text-transform:uppercase;color:var(--ink);
  background:var(--paper);border-bottom:1px solid var(--hairline-strong);
  padding:14px 18px;
}
.spec-table caption .cap-ref{float:right;color:var(--blue-ink)}
.spec-table thead th{
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--grey);
  background:var(--paper);border-bottom:1px solid var(--hairline-strong);
  padding:13px 18px;white-space:nowrap;
}
.spec-table tbody th,.spec-table tbody td{
  padding:14px 18px;border-bottom:1px solid var(--hairline);
  vertical-align:top;font-size:.9375rem;
}
.spec-table tbody th{
  font-weight:600;color:var(--ink);font-family:var(--font-body);
  width:34%;
}
.spec-table tbody td{
  font-family:var(--font-mono);font-size:var(--fs-mono);letter-spacing:.03em;
  color:var(--ink-2);line-height:1.6;
}
.spec-table tbody tr:last-child th,.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table tbody tr:hover{background:rgba(41,119,255,.035)}
.spec-table td .sub{display:block;color:var(--grey-soft);font-size:var(--fs-mono-sm);margin-top:4px}
.tbc{
  color:var(--blue-ink);font-weight:600;letter-spacing:.14em;
  border-bottom:1px dashed rgba(41,119,255,.6);
}
.spec-key{
  display:flex;align-items:flex-start;gap:12px;margin-top:var(--s-4);
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);letter-spacing:.1em;
  text-transform:uppercase;color:var(--grey);
}
.spec-key::before{content:"";width:9px;height:9px;background:var(--blue);flex:none;margin-top:4px}

/* 12 ------------------------------------------------ LISTS, BULLETS, STEPS */
.bullets{display:flex;flex-direction:column;gap:var(--s-2)}
.bullets li{
  position:relative;padding-left:24px;color:var(--grey);font-size:.9375rem;
}
.bullets li::before{
  content:"";position:absolute;left:0;top:.62em;width:11px;height:1px;background:var(--blue);
}
.bullets li::after{
  content:"";position:absolute;left:0;top:.62em;width:1px;height:1px;background:var(--blue);
}
.bullets--tight li{padding-left:18px}
.checklist{display:flex;flex-direction:column;gap:var(--s-3)}
.checklist li{display:flex;gap:12px;align-items:flex-start;color:var(--grey);font-size:.9375rem}
.checklist svg{width:17px;height:17px;color:var(--blue);flex:none;margin-top:3px}

.steps{display:grid;gap:0;grid-template-columns:repeat(4,minmax(0,1fr));border:1px solid var(--hairline-strong);background:var(--panel)}
.step{padding:var(--s-5);border-right:1px solid var(--hairline);position:relative}
.step:last-child{border-right:0}
.step__num{
  font-family:var(--font-mono);font-size:1.5rem;font-weight:600;color:var(--blue-ink);
  display:block;margin-bottom:var(--s-3);letter-spacing:.02em;
}
.step h3,.step h4{font-size:1rem;margin-bottom:var(--s-2)}
.step p{font-size:.875rem;color:var(--grey)}
.steps.steps--rows{grid-template-columns:minmax(0,1fr)}
.steps.steps--rows .step{border-right:0;border-bottom:1px solid var(--hairline)}
.steps.steps--rows .step:last-child{border-bottom:0}
.steps.steps--rows .step__num{font-size:1.125rem;margin-bottom:var(--s-2)}

.social-list{display:flex;flex-direction:column;gap:10px}
.social-list a{
  display:inline-flex;align-items:center;gap:11px;
  font-family:var(--font-mono);font-size:var(--fs-mono);letter-spacing:.13em;
  text-transform:uppercase;color:var(--ink);
  border:1px solid var(--hairline-strong);padding:12px 15px;
  transition:background-color var(--t-fast),color var(--t-fast),border-color var(--t-fast);
}
.social-list a:hover,.social-list a:focus-visible{background:var(--blue-ink);border-color:var(--blue-ink);color:var(--white)}
.social-list svg{width:18px;height:18px;color:var(--blue);flex:none}
.social-list a:hover svg,.social-list a:focus-visible svg{color:var(--white)}

.jobs-list{border-top:1px solid var(--hairline)}
.jobs-list li{
  display:flex;gap:var(--s-4);align-items:baseline;
  padding:13px 0;border-bottom:1px solid var(--hairline);
}
.jobs-list .ref{
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);color:var(--blue-ink);
  letter-spacing:.14em;flex:none;min-width:5.5rem;
}
.jobs-list .lbl{color:var(--ink);font-weight:500;font-size:.9375rem}
.jobs-list .meta{margin-left:auto;font-family:var(--font-mono);font-size:var(--fs-mono-sm);color:var(--grey-soft);letter-spacing:.1em;text-transform:uppercase;text-align:right}

.tag-row{display:flex;flex-wrap:wrap;gap:var(--s-2)}
.tag{
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);letter-spacing:.12em;
  text-transform:uppercase;color:var(--ink-2);
  border:1px solid var(--hairline-strong);background:var(--paper);
  padding:8px 13px;
}
.tag--accent{border-color:rgba(41,119,255,.55);color:var(--blue-ink);background:rgba(41,119,255,.05)}

/* Stats strip — numbers only, never invented performance claims */
.figures{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border:1px solid var(--hairline-strong);background:var(--panel)}
.figure{padding:var(--s-5);border-right:1px solid var(--hairline)}
.figure:last-child{border-right:0}
.figure__num{font-family:var(--font-mono);font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:600;color:var(--ink);letter-spacing:-.01em;display:block}
.figure__lbl{font-family:var(--font-mono);font-size:var(--fs-mono-sm);letter-spacing:.14em;text-transform:uppercase;color:var(--grey);margin-top:6px;display:block}

/* 13 ------------------------------------------- GALLERY, FILTER, LIGHTBOX */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:var(--s-2);align-items:center;
  padding:var(--s-4) 0;border-top:1px solid var(--hairline);border-bottom:1px solid var(--hairline);
}
.filter-btn{
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);
  border:1px solid var(--hairline-strong);background:var(--panel);
  padding:10px 15px;
  transition:background-color var(--t-fast),color var(--t-fast),border-color var(--t-fast);
}
.filter-btn:hover{border-color:var(--blue);color:var(--blue-ink)}
.filter-btn[aria-pressed="true"]{background:var(--ink);color:var(--white);border-color:var(--ink)}
.filter-status{margin-left:auto;font-family:var(--font-mono);font-size:var(--fs-mono-sm);letter-spacing:.14em;text-transform:uppercase;color:var(--grey)}

.gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--s-4);margin-top:var(--s-6)}
.tile{
  position:relative;border:1px solid var(--hairline-strong);background:var(--panel);
  display:flex;flex-direction:column;padding:0;text-align:left;width:100%;
  transition:border-color var(--t-mid);
}
.tile:hover{border-color:var(--blue)}
.tile__media{display:block;position:relative;overflow:hidden;border-bottom:1px solid var(--hairline)}
.tile__media img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:opacity var(--t-mid)}
.tile__title{
  display:block;font-family:var(--font-head);font-weight:700;text-transform:uppercase;
  font-size:1rem;letter-spacing:.01em;line-height:1.2;color:var(--ink);
}
.tile__ref{
  position:absolute;top:10px;left:10px;z-index:2;
  background:var(--panel);border:1px solid var(--hairline-strong);
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);letter-spacing:.14em;
  color:var(--blue-ink);padding:4px 8px;
}
.tile__body{padding:var(--s-4);display:flex;flex-direction:column;gap:6px;flex:1 1 auto}
.tile__body h3{font-size:1rem}
.tile__body p{font-size:.875rem;color:var(--grey)}
.tile__cat{
  margin-top:auto;padding-top:var(--s-3);
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);
  letter-spacing:.14em;text-transform:uppercase;color:var(--grey-soft);
  display:flex;justify-content:space-between;gap:10px;
}
.tile[hidden]{display:none}
.gallery__empty{
  display:none;margin-top:var(--s-5);padding:var(--s-5);
  border:1px dashed var(--hairline-strong);color:var(--grey);font-size:.9375rem;
}
.gallery__empty.is-shown{display:block}

.lightbox{
  position:fixed;inset:0;z-index:120;display:flex;align-items:center;justify-content:center;
  padding:clamp(16px,4vw,48px);
  background:rgba(10,10,10,.94);
  opacity:0;visibility:hidden;transition:opacity var(--t-mid),visibility var(--t-mid);
}
.lightbox.is-open{opacity:1;visibility:visible}
.lightbox__panel{
  position:relative;width:min(1100px,100%);max-height:calc(100vh - 4rem);
  background:var(--charcoal);border:1px solid rgba(199,201,206,.4);
  display:flex;flex-direction:column;
}
.lightbox__head{
  display:flex;align-items:center;gap:var(--s-4);
  padding:12px 16px;border-bottom:1px solid rgba(199,201,206,.28);
}
.lightbox__title{font-family:var(--font-mono);font-size:var(--fs-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--white)}
.lightbox__count{margin-left:auto;font-family:var(--font-mono);font-size:var(--fs-mono-sm);color:var(--blue-light);letter-spacing:.14em}
.lightbox__close{
  width:38px;height:38px;display:grid;place-items:center;flex:none;
  border:1px solid rgba(199,201,206,.45);color:var(--white);
  transition:background-color var(--t-fast),color var(--t-fast);
}
.lightbox__close:hover{background:var(--blue)}
.lightbox__body{
  display:flex;align-items:center;justify-content:center;
  padding:clamp(12px,3vw,32px);min-height:0;flex:1 1 auto;overflow:auto;
}
.lightbox__body img{max-height:min(62vh,620px);width:auto;object-fit:contain;border:1px solid rgba(199,201,206,.28)}
.lightbox__cap{
  padding:14px 16px;border-top:1px solid rgba(199,201,206,.28);
  font-size:.875rem;color:rgba(244,245,247,.82);
}
.lightbox__foot{display:flex;align-items:center;gap:var(--s-2);padding:0 16px 16px}
.lightbox__nav{
  display:inline-flex;align-items:center;gap:9px;
  border:1px solid rgba(199,201,206,.45);color:var(--white);
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);letter-spacing:.14em;
  text-transform:uppercase;padding:10px 15px;
  transition:background-color var(--t-fast),color var(--t-fast);
}
.lightbox__nav:hover{background:var(--blue)}
.lightbox__nav svg{width:15px;height:15px}

/* 14 -------------------------------------------------------------------- FORMS */
.form{display:flex;flex-direction:column;gap:var(--s-5)}
.form-grid{display:grid;gap:var(--s-4);grid-template-columns:repeat(2,minmax(0,1fr))}
.field{display:flex;flex-direction:column;gap:7px;min-width:0}
.field--full{grid-column:1/-1}
.field label,.field .label{
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;color:var(--ink);
}
.field .req{color:var(--blue-ink)}
.field .hint{font-family:var(--font-mono);font-size:var(--fs-mono-sm);letter-spacing:.06em;color:var(--grey-soft);text-transform:none}
.field input[type="text"],.field input[type="email"],.field input[type="tel"],
.field input[type="date"],.field input[type="number"],.field select,.field textarea{
  width:100%;background:var(--panel);color:var(--ink);
  border:1px solid var(--hairline-strong);border-radius:var(--radius);
  padding:13px 14px;font-size:.9375rem;
  transition:border-color var(--t-fast),box-shadow var(--t-fast);
}
.field textarea{min-height:150px;resize:vertical;font-family:var(--font-body)}
.field select{font-family:var(--font-mono);font-size:var(--fs-mono);letter-spacing:.06em;text-transform:uppercase}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(41,119,255,.14);
}
.field input::placeholder,.field textarea::placeholder{color:#6A6F78;text-transform:none;letter-spacing:normal}
.field[data-invalid="true"] input,.field[data-invalid="true"] select,.field[data-invalid="true"] textarea,
.field input[aria-invalid="true"],.field select[aria-invalid="true"],.field textarea[aria-invalid="true"]{
  border-color:#B3261E;box-shadow:0 0 0 3px rgba(179,38,30,.12);
}
.field-error{
  display:none;font-family:var(--font-mono);font-size:var(--fs-mono-sm);
  letter-spacing:.06em;color:#8C1D18;align-items:center;gap:7px;
}
.field-error.is-shown{display:flex}
.field-error::before{content:"";width:7px;height:7px;background:#B3261E;flex:none}

.check{display:flex;align-items:flex-start;gap:12px}
.check input[type="checkbox"]{width:20px;height:20px;flex:none;margin-top:2px;accent-color:#2977FF;border:1px solid var(--silver)}
.check label{font-family:var(--font-body);font-size:.9375rem;letter-spacing:normal;text-transform:none;color:var(--ink-2);font-weight:400}

.error-summary{
  display:none;border:1px solid #B3261E;border-left-width:4px;background:#FDF4F3;
  padding:var(--s-4) var(--s-5);
}
.error-summary.is-shown{display:block}
.error-summary h3{color:#8C1D18;font-size:1rem;margin-bottom:var(--s-2)}
.error-summary ul{display:flex;flex-direction:column;gap:6px}
.error-summary a{color:#8C1D18;font-size:.9375rem;text-decoration:underline}

.dropzone{
  position:relative;border:1px dashed var(--hairline-strong);background:var(--paper);
  padding:var(--s-6) var(--s-5);text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:10px;
  transition:border-color var(--t-mid),background-color var(--t-mid);
}
.dropzone.is-dragover{border-color:var(--blue);background:rgba(41,119,255,.06);border-style:solid}
.dropzone svg{width:30px;height:30px;color:var(--blue)}
.dropzone__title{font-family:var(--font-mono);font-size:var(--fs-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ink)}
.dropzone__hint{font-size:.8125rem;color:var(--grey)}
.dropzone__browse{
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);letter-spacing:.14em;text-transform:uppercase;
  color:var(--blue-ink);border-bottom:1px solid var(--blue);
}
.dropzone input[type="file"]{
  position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer;
}
.file-list{margin-top:var(--s-4);display:flex;flex-direction:column;gap:0;border-top:1px solid var(--hairline)}
.file-list li{
  display:flex;align-items:center;gap:var(--s-3);
  padding:11px 0;border-bottom:1px solid var(--hairline);
}
.file-list .fname{font-size:.9375rem;color:var(--ink);word-break:break-all}
.file-list .fmeta{font-family:var(--font-mono);font-size:var(--fs-mono-sm);color:var(--grey-soft);margin-left:auto;white-space:nowrap;letter-spacing:.06em}
.file-list .fremove{
  width:30px;height:30px;flex:none;display:grid;place-items:center;
  border:1px solid var(--hairline-strong);color:var(--grey);
  transition:border-color var(--t-fast),color var(--t-fast),background-color var(--t-fast);
}
.file-list .fremove:hover{border-color:#B3261E;color:#8C1D18;background:#FDF4F3}
.file-list .fremove svg{width:14px;height:14px}
.file-list__empty{color:var(--grey-soft);font-size:.875rem;padding-top:var(--s-3)}

.form-note{
  border:1px solid var(--hairline-strong);border-left:3px solid var(--blue);
  background:var(--paper);padding:var(--s-4);
  font-size:.875rem;color:var(--grey);
}
.success{display:none;border:1px solid var(--blue);background:var(--panel);padding:clamp(24px,3vw,44px)}
.success.is-shown{display:block}
.success__icon{width:44px;height:44px;color:var(--blue);margin-bottom:var(--s-4)}
.success h3{font-size:var(--fs-h3);margin-bottom:var(--s-3)}

/* 15 ----------------------------------------------------------------- CTA BAND */
.cta-band{
  position:relative;background:var(--charcoal);color:var(--white);
  border-top:2px solid var(--blue);
  overflow:hidden;
}
.cta-band__grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:
    repeating-linear-gradient(to right,rgba(199,201,206,.09) 0 1px,transparent 1px 100px),
    repeating-linear-gradient(to bottom,rgba(199,201,206,.09) 0 1px,transparent 1px 100px),
    repeating-linear-gradient(to right,rgba(41,119,255,.14) 0 1px,transparent 1px 20px),
    repeating-linear-gradient(to bottom,rgba(41,119,255,.14) 0 1px,transparent 1px 20px);
}
.cta-band__in{position:relative;z-index:1;display:flex;gap:clamp(28px,4vw,72px);align-items:center;justify-content:space-between;padding-block:var(--s-9);flex-wrap:wrap}
.cta-band h2{color:var(--white);max-width:20ch}
.cta-band p{color:rgba(244,245,247,.85);margin-top:var(--s-4);max-width:52ch}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:var(--s-3)}
.cta-band__sheet{position:relative;z-index:1}

/* 16 ------------------------------------------------------------------- FOOTER */
.site-footer{background:var(--charcoal);color:rgba(244,245,247,.84);border-top:2px solid var(--blue)}
.footer__in{padding-block:var(--s-8) var(--s-7)}
.footer__grid{
  display:grid;gap:0;
  grid-template-columns:1.5fr 1fr 1fr 1.5fr;
}
.footer__col{padding:0 var(--s-5);border-left:1px solid var(--hairline-dark)}
.footer__col:first-child{border-left:0;padding-left:0}
.footer__col:last-child{padding-right:0}
.footer__h{
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);font-weight:600;
  letter-spacing:.18em;text-transform:uppercase;color:var(--silver);
  margin-bottom:var(--s-4);padding-bottom:10px;border-bottom:1px solid var(--hairline-dark);
}
.footer__brand{display:flex;align-items:center;gap:12px;margin-bottom:var(--s-4)}
.footer__mark{width:44px;height:44px}
.footer__wordmark{font-family:var(--font-head);font-weight:800;text-transform:uppercase;letter-spacing:.05em;color:var(--white);font-size:1rem;line-height:1.1}
.footer__wordmark span{display:block;font-family:var(--font-mono);font-size:.5rem;letter-spacing:.34em;color:var(--silver);font-weight:500;margin-top:3px}
.footer__desc{font-size:.875rem;color:rgba(244,245,247,.72);max-width:34ch}
.footer__list{display:flex;flex-direction:column;gap:9px}
.footer__list a{
  font-size:.875rem;color:rgba(244,245,247,.8);
  transition:color var(--t-fast);
  display:inline-flex;align-items:center;gap:8px;
}
.footer__list a::before{content:"";width:6px;height:1px;background:var(--blue);flex:none;transition:width var(--t-fast)}
.footer__list a:hover{color:var(--white)}
.footer__list a:hover::before{width:12px}
.footer address{font-size:.875rem;line-height:1.7;color:rgba(244,245,247,.8);display:flex;flex-direction:column;gap:8px}
.footer address a{color:var(--white);border-bottom:1px solid rgba(199,201,206,.4);transition:border-color var(--t-fast),color var(--t-fast)}
.footer address a:hover{color:var(--blue-light);border-color:var(--blue-light)}
.footer__hours{margin-top:var(--s-4);padding-top:var(--s-4);border-top:1px solid var(--hairline-dark)}
.footer__hours .mono{color:var(--silver)}
.footer__hours p{font-size:.875rem;color:rgba(244,245,247,.8)}
.socials{display:flex;gap:var(--s-2);margin-top:var(--s-4);flex-wrap:wrap}
.socials a{
  width:38px;height:38px;display:grid;place-items:center;
  border:1px solid rgba(199,201,206,.32);color:var(--silver);
  transition:background-color var(--t-fast),color var(--t-fast),border-color var(--t-fast);
}
.socials a:hover{background:var(--blue-ink);border-color:var(--blue-ink);color:var(--white)}
.socials svg{width:17px;height:17px}
.footer__bottom{border-top:1px solid var(--hairline-dark);background:rgba(10,10,10,.45)}
.footer__bottom-in{
  display:flex;flex-wrap:wrap;gap:8px var(--s-5);align-items:center;
  padding-block:14px;
  font-family:var(--font-mono);font-size:var(--fs-mono-sm);letter-spacing:.12em;
  text-transform:uppercase;color:rgba(199,201,206,.75);
}
.footer__bottom-in span:last-child{margin-left:auto;color:var(--blue-light)}

/* Back to top */
.to-top{
  position:fixed;right:clamp(14px,2.4vw,30px);bottom:clamp(14px,2.4vw,30px);z-index:80;
  width:46px;height:46px;display:grid;place-items:center;
  background:var(--ink);color:var(--white);border:1px solid var(--ink);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity var(--t-mid),visibility var(--t-mid),transform var(--t-mid),background-color var(--t-fast);
}
.to-top.is-shown{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--blue);border-color:var(--blue)}
.to-top svg{width:18px;height:18px}

/* 17 -------------------------------------------------- MOTION, MEDIA, PRINT */
.reveal{opacity:0;transform:translateY(16px)}
.reveal.is-visible{opacity:1;transform:none;transition:opacity var(--t-slow),transform var(--t-slow)}
.reveal-draw::after{
  content:"";display:block;height:2px;background:var(--blue);width:0;
  transition:width 620ms cubic-bezier(.22,.61,.36,1);
}
.reveal-draw.is-visible::after{width:100%}
[data-reveal-delay="1"].is-visible{transition-delay:80ms}
[data-reveal-delay="2"].is-visible{transition-delay:160ms}
[data-reveal-delay="3"].is-visible{transition-delay:240ms}
[data-reveal-delay="4"].is-visible{transition-delay:320ms}
[data-reveal-delay="5"].is-visible{transition-delay:400ms}

.map-embed{position:relative;border:1px solid var(--hairline-strong);background:var(--panel)}
.map-embed__ratio{position:relative;aspect-ratio:16/9;width:100%}
.map-embed__ratio iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.map-fallback{padding:var(--s-4) var(--s-5);border-top:1px solid var(--hairline);font-size:.875rem;color:var(--grey)}
.map-fallback a{font-family:var(--font-mono);font-size:var(--fs-mono-sm);letter-spacing:.12em;text-transform:uppercase;color:var(--blue-ink);border-bottom:1px solid var(--blue)}

/* ---------------- Responsive ---------------- */
@media (max-width:1180px){
  :root{--rail-w:clamp(140px,13vw,180px)}
  .footer__grid{grid-template-columns:1fr 1fr;row-gap:var(--s-7)}
  .footer__col{padding:0 var(--s-5)}
  .footer__col:nth-child(odd){border-left:0;padding-left:0}
  .footer__col:nth-child(even){padding-right:0}
}

@media (max-width:1024px){
  .main-nav__list{gap:10px}
  .main-nav__list a{letter-spacing:.06em;font-size:.625rem}
  .header-phone__num{display:none}
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step:nth-child(2){border-right:0}
  .step:nth-child(-n+2){border-bottom:1px solid var(--hairline)}
  .figures{grid-template-columns:repeat(2,minmax(0,1fr))}
  .figure:nth-child(2){border-right:0}
  .figure:nth-child(-n+2){border-bottom:1px solid var(--hairline)}
  .gallery{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:900px){
  .split--2,.split--sidebar{grid-template-columns:minmax(0,1fr)}
  .page-head__in{grid-template-columns:minmax(0,1fr);align-items:start}
  .sheet{grid-template-columns:minmax(0,1fr)}
  .sheet__rail{
    border-right:0;border-bottom:1px solid var(--hairline);
    padding:var(--s-6) 0 var(--s-3);
  }
  .sheet__body{padding:var(--s-6) 0 var(--s-8) 0}
  .rail-label{position:static}
  .rail-label .rail-num{display:inline}
  .section > .shell{--gutter:clamp(18px,5vw,32px)}
}

@media (max-width:860px){
  .nav-toggle{display:inline-flex}
  .nav-panel{
    position:fixed;top:0;right:0;bottom:0;z-index:100;
    width:min(90vw,360px);max-width:100%;
    background:var(--panel);
    border-left:1px solid var(--hairline-strong);
    flex-direction:column;align-items:stretch;gap:0;
    padding:var(--s-5) 0 var(--s-6);
    overflow-y:auto;
    transform:translateX(101%);visibility:hidden;
    transition:transform var(--t-mid),visibility var(--t-mid);
  }
  .nav-panel.is-open{transform:none;visibility:visible}
  .nav-panel__head{
    display:flex;align-items:center;justify-content:space-between;gap:var(--s-4);
    padding:0 var(--s-5) var(--s-4);border-bottom:1px solid var(--hairline);
  }
  .nav-panel__close{
    width:40px;height:40px;display:grid;place-items:center;flex:none;
    border:1px solid var(--hairline-strong);color:var(--ink);
    transition:background-color var(--t-fast),color var(--t-fast);
  }
  .nav-panel__close:hover{background:var(--blue);color:var(--white)}
  .nav-panel__close svg{width:17px;height:17px}
  .main-nav{flex:0 0 auto;padding:var(--s-4) var(--s-5) 0}
  .main-nav__list{flex-direction:column;align-items:stretch;gap:0;flex-wrap:nowrap}
  .main-nav__list a{
    padding:15px 0;border-bottom:1px solid var(--hairline);
    font-size:var(--fs-mono);letter-spacing:.14em;
  }
  .main-nav__list a::after{bottom:8px;left:0;right:auto;width:22px}
  .main-nav__list a::before{left:auto;right:0;top:calc(50% - 3px);transform:none}
  .header-actions{
    flex-direction:column;align-items:stretch;gap:var(--s-3);
    padding:var(--s-5) var(--s-5) 0;margin-top:var(--s-4);
  }
  .header-phone{display:none}
  .header-actions .btn{width:100%}
  .site-header__in{min-height:66px}
  .brand__mark{width:38px;height:38px}
}

@media (max-width:768px){
  :root{--fs-mono:.7rem;--fs-mono-sm:.65rem}
  .hero__in{grid-template-columns:minmax(0,1fr)}
  .gallery{grid-template-columns:minmax(0,1fr)}
  .grid--3,.grid--2,.grid--4{grid-template-columns:minmax(0,1fr)}
  .form-grid{grid-template-columns:minmax(0,1fr)}
  .footer__grid{grid-template-columns:minmax(0,1fr)}
  .footer__col{padding:0;border-left:0;border-top:1px solid var(--hairline-dark);padding-top:var(--s-5);margin-top:var(--s-5)}
  .footer__col:first-child{border-top:0;padding-top:0;margin-top:0}
  .footer__bottom-in span:last-child{margin-left:0}
  .filter-status{margin-left:0;width:100%;padding-top:6px}
  .cta-band__actions .btn{width:100%}
  .jobs-list li{flex-wrap:wrap}
  .jobs-list .meta{margin-left:0;width:100%;text-align:left}
}

@media (max-width:480px){
  .figures{grid-template-columns:minmax(0,1fr)}
  .figure{border-right:0;border-bottom:1px solid var(--hairline)}
  .figure:last-child{border-bottom:0}
  .steps{grid-template-columns:minmax(0,1fr)}
  .step{border-right:0;border-bottom:1px solid var(--hairline)}
  .step:last-child{border-bottom:0}
  .spec-bar__meta{display:none}
  .titleblock > span{padding:10px 12px;font-size:.6rem}
  .titleblock > span:last-child{margin-left:0;width:100%;border-top:1px solid var(--hairline)}
  .btn{padding:14px 18px;letter-spacing:.1em}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none}
  .reveal-draw::after{width:100%}
}

@media print{
  .spec-bar,.nav-toggle,.nav-panel,.nav-backdrop,.to-top,.site-header,.lightbox,.filter-bar{display:none}
  body{background:#fff;color:#000}
  .section{border-top:1px solid #999;break-inside:avoid}
  .blueprint,.blueprint--panel,.grid-block,.cta-band__grid{background-image:none}
  .site-footer{background:#fff;color:#000;border-top:1px solid #000}
  .site-footer *,.footer__h,.footer__list a,.footer address a{color:#000}
  .card,.panel,.table-wrap,.frame,.spec-table caption,.spec-table thead th{background:#fff}
  a[href]::after{content:""}
}