/* ============================================================================
   seatbeltmanufacturer.com — design system
   Automotive restraint manufacturing: precision / safety / engineering
   ========================================================================= */

/* ---------- 1. Tokens -------------------------------------------------- */
:root{
  /* Neutrals */
  --ink:        #0A0C0E;   /* near-black ground */
  --ink-1:      #101418;   /* raised dark panel */
  --ink-2:      #1A2027;   /* dark card */
  --graphite:   #2C343C;
  --steel:      #5C6670;   /* secondary text on light */
  --steel-lt:   #8C949C;   /* secondary text on dark */
  --paper:      #FFFFFF;
  --paper-1:    #F5F4F2;   /* warm light grey */
  --paper-2:    #EBE8E4;
  --paper-3:    #DDD9D4;

  /* Accent — safety red, used sparingly */
  --accent:     #C4291A;   /* passes AA on white */
  --accent-hi:  #F2553A;   /* for dark grounds */
  --accent-dim: rgba(196,41,26,.10);

  /* Lines */
  --line:       rgba(10,12,14,.13);
  --line-soft:  rgba(10,12,14,.07);
  --line-dk:    rgba(255,255,255,.13);
  --line-dk-sf: rgba(255,255,255,.07);

  /* Type */
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --head: "Space Grotesk", "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas, monospace;

  /* Metrics */
  --shell: 1320px;
  --shell-wide: 1560px;
  --gutter: clamp(1.25rem, 4vw, 3.5rem);
  --hdr: 76px;
  --hdr-sm: 60px;

  /* Section rhythm */
  --sect: clamp(4.5rem, 9vw, 8.5rem);
  --sect-sm: clamp(3rem, 6vw, 5rem);

  --r: 3px;              /* engineered, near-square radii */
  --r-lg: 5px;

  --ease: cubic-bezier(.22,.61,.36,1);
  --ease-out: cubic-bezier(.16,1,.3,1);
}

/* ---------- 2. Reset -------------------------------------------------- */
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){ html{ scroll-behavior:auto; } }

body{
  margin:0;
  font-family:var(--sans);
  font-size:1.0625rem;
  line-height:1.72;
  color:var(--graphite);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
body.nav-open{ overflow:hidden; }

h1,h2,h3,h4,h5{
  font-family:var(--head);
  color:var(--ink);
  margin:0 0 .6em;
  line-height:1.06;
  letter-spacing:-.022em;
  font-weight:600;
  text-wrap:balance;
}
p{ margin:0 0 1.15em; }
p:last-child{ margin-bottom:0; }
ul,ol{ margin:0 0 1.15em; padding-left:1.15em; }
li{ margin-bottom:.4em; }
a{ color:inherit; text-decoration:none; }
img,svg,video{ max-width:100%; display:block; }
img{ height:auto; }
strong{ font-weight:600; color:var(--ink); }
hr{ border:0; border-top:1px solid var(--line); margin:0; }
::selection{ background:var(--accent); color:#fff; }

button,input,select,textarea{ font:inherit; color:inherit; }
button{ cursor:pointer; background:none; border:0; padding:0; }

:focus-visible{
  outline:2px solid var(--accent-hi);
  outline-offset:3px;
  border-radius:2px;
}
.on-dark :focus-visible, .dark :focus-visible{ outline-color:var(--accent-hi); }

/* Screen-reader only */
.sr{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0;
}
.skip{
  position:absolute; top:-100%; left:1rem; z-index:200;
  background:var(--accent); color:#fff; padding:.7rem 1.1rem;
  font-size:.8rem; font-weight:600; letter-spacing:.06em; text-transform:uppercase;
  border-radius:0 0 var(--r) var(--r);
}
.skip:focus{ top:0; }

/* ---------- 3. Type utilities ----------------------------------------- */
.display{ font-family:var(--head); font-size:clamp(2.3rem,5.6vw,3.95rem); line-height:.98; letter-spacing:-.035em; font-weight:600; }
.h1{ font-size:clamp(2.15rem,5vw,3.9rem); line-height:1.02; letter-spacing:-.03em; }
.h2{ font-size:clamp(1.75rem,3.3vw,2.8rem); line-height:1.07; letter-spacing:-.026em; }
.h3{ font-size:clamp(1.28rem,2vw,1.7rem); line-height:1.15; letter-spacing:-.018em; }
.h4{ font-size:clamp(1.05rem,1.4vw,1.2rem); line-height:1.25; letter-spacing:-.01em; }
h1,h2,h3,h4{ font-weight:600; }

.lede{ font-size:clamp(1.09rem,1.55vw,1.32rem); line-height:1.62; color:var(--steel); }
.lede strong{ color:var(--ink); font-weight:500; }
.small{ font-size:.925rem; line-height:1.62; }
.muted{ color:var(--steel); }
.on-dark .muted, .dark .muted{ color:var(--steel-lt); }

/* Technical eyebrow: "ENGINEERING / 01" */
.eyebrow{
  display:flex; align-items:center; gap:.7rem;
  font-family:var(--head);
  font-size:.7rem; font-weight:600;
  letter-spacing:.19em; text-transform:uppercase;
  color:var(--accent);
  margin:0 0 1.15rem;
}
.eyebrow::before{
  content:""; width:26px; height:1px; background:var(--accent); flex:none;
}
.on-dark .eyebrow, .dark .eyebrow{ color:var(--accent-hi); }
.on-dark .eyebrow::before, .dark .eyebrow::before{ background:var(--accent-hi); }
.eyebrow--plain{ color:var(--steel); }
.eyebrow--plain::before{ background:var(--line); }

/* Engineering-drawing index marker */
.idx{
  font-family:var(--head); font-size:.72rem; font-weight:600;
  letter-spacing:.16em; color:var(--steel);
  font-variant-numeric:tabular-nums;
}
.on-dark .idx, .dark .idx{ color:var(--steel-lt); }
.idx b{ color:var(--accent); font-weight:600; }
.on-dark .idx b, .dark .idx b{ color:var(--accent-hi); }

/* ---------- 4. Layout ------------------------------------------------- */
.shell{ width:100%; max-width:var(--shell); margin-inline:auto; padding-inline:var(--gutter); }
.shell-wide{ width:100%; max-width:var(--shell-wide); margin-inline:auto; padding-inline:var(--gutter); }
.shell-narrow{ width:100%; max-width:820px; margin-inline:auto; padding-inline:var(--gutter); }

.sect{ padding-block:var(--sect); position:relative; }
.sect--sm{ padding-block:var(--sect-sm); }
.sect--tight{ padding-block:clamp(2.25rem,4vw,3.25rem); }

.dark{ background:var(--ink); color:rgba(255,255,255,.80); }
.dark h1,.dark h2,.dark h3,.dark h4,.dark h5{ color:#fff; }
.dark strong{ color:#fff; }
.paper-1{ background:var(--paper-1); }
.paper-2{ background:var(--paper-2); }

/* Section heading block */
.sect-head{ max-width:56ch; }
.sect-head--wide{ max-width:70ch; }
.sect-head.center{ margin-inline:auto; text-align:center; }
.sect-head.center .eyebrow{ justify-content:center; }

/* Split header: title left, supporting copy right */
.split-head{
  display:grid; gap:clamp(1.25rem,3vw,3.5rem);
  grid-template-columns:1fr;
  align-items:end;
  margin-bottom:clamp(2.25rem,4.5vw,3.75rem);
  padding-bottom:clamp(1.5rem,3vw,2.25rem);
  border-bottom:1px solid var(--line);
}
.dark .split-head{ border-bottom-color:var(--line-dk); }
@media (min-width:900px){
  .split-head{ grid-template-columns:1.15fr .85fr; }
  .split-head > :last-child{ padding-bottom:.35rem; }
}

/* Engineering grid overlay */
.grid-bg{ position:relative; isolation:isolate; }
.grid-bg::before{
  content:""; position:absolute; inset:0; z-index:-1; pointer-events:none;
  background-image:
    linear-gradient(to right, var(--line-dk-sf) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-dk-sf) 1px, transparent 1px);
  background-size:clamp(48px,6vw,84px) clamp(48px,6vw,84px);
  -webkit-mask-image:radial-gradient(120% 90% at 50% 0%, #000 0%, transparent 78%);
          mask-image:radial-gradient(120% 90% at 50% 0%, #000 0%, transparent 78%);
}
.grid-bg--light::before{
  background-image:
    linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
}

/* Rule with accent lead-in */
.rule{ display:block; height:1px; background:var(--line); position:relative; }
.dark .rule{ background:var(--line-dk); }
.rule::before{ content:""; position:absolute; left:0; top:0; width:56px; height:1px; background:var(--accent); }
.dark .rule::before{ background:var(--accent-hi); }

/* ---------- 5. Buttons ------------------------------------------------ */
.btn{
  --btn-bg:var(--accent); --btn-fg:#fff; --btn-bd:var(--accent);
  display:inline-flex; align-items:center; gap:.65rem;
  padding:.92rem 1.5rem;
  background:var(--btn-bg); color:var(--btn-fg);
  border:1px solid var(--btn-bd); border-radius:var(--r);
  font-family:var(--head); font-size:.855rem; font-weight:600;
  letter-spacing:.055em; text-transform:uppercase;
  line-height:1.1; min-height:48px;
  transition:background .28s var(--ease), color .28s var(--ease),
             border-color .28s var(--ease), transform .28s var(--ease);
  will-change:transform;
}
.btn .arw{ flex:none; transition:transform .32s var(--ease-out); }
.btn:hover{ --btn-bg:#9E2015; --btn-bd:#9E2015; }
.btn:hover .arw{ transform:translateX(5px); }
.btn:active{ transform:translateY(1px); }

.btn--ghost{ --btn-bg:transparent; --btn-fg:var(--ink); --btn-bd:var(--line); }
.btn--ghost:hover{ --btn-bg:var(--ink); --btn-fg:#fff; --btn-bd:var(--ink); }
.dark .btn--ghost, .on-dark .btn--ghost{ --btn-fg:#fff; --btn-bd:rgba(255,255,255,.30); }
.dark .btn--ghost:hover, .on-dark .btn--ghost:hover{ --btn-bg:#fff; --btn-fg:var(--ink); --btn-bd:#fff; }

.btn--light{ --btn-bg:#fff; --btn-fg:var(--ink); --btn-bd:#fff; }
.btn--light:hover{ --btn-bg:var(--paper-2); --btn-bd:var(--paper-2); }

.btn-row{ display:flex; flex-wrap:wrap; gap:.85rem; }

/* Inline text link with animated underline */
.tlink{
  display:inline-flex; align-items:center; gap:.5rem;
  font-family:var(--head); font-size:.855rem; font-weight:600;
  letter-spacing:.055em; text-transform:uppercase;
  color:var(--accent); position:relative; padding-bottom:3px;
}
.dark .tlink, .on-dark .tlink{ color:var(--accent-hi); }
.tlink::after{
  content:""; position:absolute; left:0; bottom:0; height:1px; width:100%;
  background:currentColor; transform:scaleX(0); transform-origin:left;
  transition:transform .38s var(--ease-out);
}
.tlink:hover::after{ transform:scaleX(1); }
.tlink .arw{ transition:transform .32s var(--ease-out); }
.tlink:hover .arw{ transform:translateX(4px); }

/* Underline-on-hover for body links */
.ulink{ color:var(--accent); text-decoration:underline; text-decoration-thickness:1px; text-underline-offset:3px; text-decoration-color:rgba(196,41,26,.4); transition:text-decoration-color .25s; }
.ulink:hover{ text-decoration-color:currentColor; }
.dark .ulink, .on-dark .ulink{ color:var(--accent-hi); text-decoration-color:rgba(242,85,58,.45); }

/* ---------- 6. Header ------------------------------------------------- */
.site-header{
  position:fixed; inset:0 0 auto; z-index:100;
  height:var(--hdr);
  display:flex; align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:height .3s var(--ease), background .3s var(--ease),
             border-color .3s var(--ease), backdrop-filter .3s var(--ease);
}
.site-header.is-scrolled{
  height:var(--hdr-sm);
  background:rgba(10,12,14,.90);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
          backdrop-filter:saturate(160%) blur(14px);
  border-bottom-color:var(--line-dk);
}
.hdr-inner{
  width:100%; max-width:var(--shell-wide); margin-inline:auto;
  padding-inline:var(--gutter);
  display:flex; align-items:center; gap:clamp(1rem,2.5vw,2.5rem);
}

/* Brand */
.brand{ display:flex; align-items:center; gap:.65rem; flex:none; }
.brand-mark{ flex:none; width:32px; height:32px; }
.brand-txt{ display:flex; flex-direction:column; line-height:1; }
.brand-txt b{
  font-family:var(--head); font-size:.98rem; font-weight:600;
  letter-spacing:-.02em; color:#fff;
}
.brand-txt span{
  font-family:var(--head); font-size:.545rem; font-weight:500;
  letter-spacing:.2em; text-transform:uppercase; color:var(--steel-lt);
  margin-top:.28rem;
}
@media (max-width:400px){ .brand-txt b{ font-size:.88rem; } }

/* Desktop nav */
.nav{ display:none; margin-left:auto; }
.nav ul{ display:flex; align-items:center; gap:clamp(.5rem,1.4vw,1.35rem); list-style:none; margin:0; padding:0; }
.nav li{ margin:0; }
.nav a{
  position:relative; display:block; padding:.5rem .25rem; white-space:nowrap;
  font-size:.845rem; font-weight:500; letter-spacing:.005em;
  color:rgba(255,255,255,.78);
  transition:color .22s var(--ease);
}
.nav a::after{
  content:""; position:absolute; left:.25rem; right:.25rem; bottom:.15rem;
  height:1px; background:var(--accent-hi);
  transform:scaleX(0); transform-origin:left;
  transition:transform .34s var(--ease-out);
}
.nav a:hover{ color:#fff; }
.nav a:hover::after{ transform:scaleX(1); }
.nav a[aria-current="page"]{ color:#fff; }
.nav a[aria-current="page"]::after{ transform:scaleX(1); }
.hdr-cta{ display:none; flex:none; }
.hdr-cta .btn{ padding:.66rem 1.1rem; min-height:40px; font-size:.775rem; }

@media (min-width:1180px){
  .nav{ display:block; }
  .hdr-cta{ display:block; margin-left:clamp(.75rem,1.8vw,1.75rem); }
}
/* Narrow desktops: buy back horizontal room before labels are forced to wrap. */
@media (min-width:1180px) and (max-width:1400px){
  .nav ul{ gap:.85rem; }
  .nav a{ font-size:.8rem; }
  .hdr-cta .btn{ padding:.6rem .85rem; font-size:.71rem; }
  .brand-txt b{ font-size:.9rem; }
}

/* Hamburger */
.nav-toggle{
  margin-left:auto; width:46px; height:46px; flex:none;
  display:grid; place-items:center; border:1px solid var(--line-dk); border-radius:var(--r);
  transition:border-color .25s, background .25s;
}
.nav-toggle:hover{ border-color:rgba(255,255,255,.34); background:rgba(255,255,255,.05); }
@media (min-width:1180px){ .nav-toggle{ display:none; } }
.nav-toggle span{
  display:block; width:19px; height:1.5px; background:#fff; border-radius:2px;
  transition:transform .32s var(--ease), opacity .2s var(--ease);
}
.nav-toggle span + span{ margin-top:5px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1){ transform:translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2){ opacity:0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3){ transform:translateY(-6.5px) rotate(-45deg); }

/* Mobile panel */
.mobile-nav{
  position:fixed; inset:0; z-index:99;
  background:var(--ink);
  padding:calc(var(--hdr) + 1.5rem) var(--gutter) 2rem;
  display:flex; flex-direction:column;
  overflow-y:auto;
  opacity:0; visibility:hidden;
  transform:translateY(-10px);
  transition:opacity .3s var(--ease), transform .38s var(--ease-out), visibility .3s;
}
.mobile-nav.is-open{ opacity:1; visibility:visible; transform:none; }
@media (min-width:1180px){ .mobile-nav{ display:none; } }
.mobile-nav ul{ list-style:none; margin:0 0 auto; padding:0; }
.mobile-nav li{ margin:0; border-bottom:1px solid var(--line-dk-sf); }
.mobile-nav a{
  display:flex; align-items:center; justify-content:space-between; gap:1rem;
  padding:1.05rem .25rem;
  font-family:var(--head); font-size:1.32rem; font-weight:500; letter-spacing:-.018em;
  color:rgba(255,255,255,.9); min-height:56px;
  transition:color .2s, padding-left .3s var(--ease);
}
.mobile-nav a .n{ font-family:var(--head); font-size:.66rem; letter-spacing:.16em; color:var(--steel-lt); font-variant-numeric:tabular-nums; }
.mobile-nav a:hover, .mobile-nav a:focus-visible{ color:#fff; padding-left:.6rem; }
.mobile-nav a[aria-current="page"]{ color:var(--accent-hi); }
.mobile-nav a[aria-current="page"] .n{ color:var(--accent-hi); }
.mobile-foot{ padding-top:2rem; margin-top:1.5rem; border-top:1px solid var(--line-dk); }
.mobile-foot .btn{ width:100%; justify-content:center; }
.mobile-contact{ display:flex; flex-direction:column; gap:.35rem; margin-top:1.5rem; }
.mobile-contact a{ color:rgba(255,255,255,.82); font-size:.95rem; min-height:44px; display:flex; align-items:center; }
.mobile-contact a:hover{ color:#fff; }
.mobile-contact .mc-name{ color:#fff; font-family:var(--head); font-size:.95rem; font-weight:500; margin:0 0 .1rem; }

/* ---------- 7. Figures / images -------------------------------------- */
.fig{ position:relative; margin:0; overflow:hidden; border-radius:var(--r); background:var(--paper-2); }
.dark .fig{ background:var(--ink-2); }
.fig img{ width:100%; display:block; }

/* Natural: full image, real aspect ratio, never cropped */
.fig--nat img{ height:auto; }

/* Ratio box for controlled compositions (decorative photography only) */
.fig--ratio{ aspect-ratio:var(--ar, 3/2); }
.fig--ratio img{ width:100%; height:100%; object-fit:cover; object-position:var(--pos, center); }

/* Product / technical: never crop, sit on a light panel */
.fig--contain{ background:#fff; border:1px solid var(--line); aspect-ratio:var(--ar, 1/1); display:grid; place-items:center; }
.fig--contain img{ width:100%; height:100%; object-fit:contain; object-position:center; padding:clamp(.75rem,2.5vw,1.75rem); }
.dark .fig--contain{ background:#fff; border-color:transparent; }

/* Corner tick marks — engineering drawing detail */
.fig--ticks::before,.fig--ticks::after{
  content:""; position:absolute; width:14px; height:14px; pointer-events:none; z-index:2;
  border-color:rgba(255,255,255,.55); border-style:solid; border-width:0;
}
.fig--ticks::before{ top:10px; left:10px; border-top-width:1px; border-left-width:1px; }
.fig--ticks::after{ bottom:10px; right:10px; border-bottom-width:1px; border-right-width:1px; }
.fig--ticks-dk::before,.fig--ticks-dk::after{ border-color:rgba(10,12,14,.28); }

/* Caption / data label */
.fig-cap{
  display:flex; align-items:baseline; gap:.6rem;
  margin-top:.85rem; font-family:var(--head);
  font-size:.685rem; letter-spacing:.15em; text-transform:uppercase; color:var(--steel);
}
.fig-cap b{ color:var(--accent); font-weight:600; }
.dark .fig-cap{ color:var(--steel-lt); }
.dark .fig-cap b{ color:var(--accent-hi); }

/* Zoom-on-hover wrapper (decorative only) */
.zoomable img{ transition:transform .7s var(--ease-out); }
.zoomable:hover img{ transform:scale(1.035); }

/* ---------- 8. Reveal animation -------------------------------------- */
.js .rv{ opacity:0; transform:translateY(22px); transition:opacity .7s var(--ease-out), transform .8s var(--ease-out); }
.js .rv.in{ opacity:1; transform:none; }
.js .rv-d1{ transition-delay:.07s; } .js .rv-d2{ transition-delay:.14s; }
.js .rv-d3{ transition-delay:.21s; } .js .rv-d4{ transition-delay:.28s; }
.js .rv-d5{ transition-delay:.35s; } .js .rv-d6{ transition-delay:.42s; }

@media (prefers-reduced-motion: reduce){
  .rv, .js .rv{ opacity:1 !important; transform:none !important; transition:none !important; }
  .zoomable img{ transition:none; }
  .zoomable:hover img{ transform:none; }
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

/* ---------- 9. Hero variants ------------------------------------------ */

/* 9a. HOME — split: dark type panel + tall natural-ratio photograph */
.hero-split{
  background:var(--ink); color:rgba(255,255,255,.8);
  padding-top:var(--hdr);
  position:relative; overflow:hidden;
}
.hero-split__grid{
  display:grid; grid-template-columns:1fr;
  max-width:var(--shell-wide); margin-inline:auto;
}
.hero-split__copy{
  padding:clamp(2.75rem,7vw,6rem) var(--gutter) clamp(3rem,7vw,6rem);
  display:flex; flex-direction:column; justify-content:center;
  position:relative; z-index:2;
}
.hero-split__media{ position:relative; }
.hero-split__media img{ width:100%; height:auto; display:block; }
@media (min-width:960px){
  .hero-split__grid{ grid-template-columns:1.15fr .85fr; align-items:stretch; }
  .hero-split__copy{ padding-right:clamp(2rem,4vw,4rem); }
  .hero-split__media{ overflow:hidden; }
  .hero-split__media img{ height:100%; object-fit:cover; object-position:72% center; }
}
.hero-split h1{ color:#fff; margin-bottom:1.15rem; }
.hero-split h1 em{ font-style:normal; color:var(--accent-hi); }
.hero-split .lede{ color:rgba(255,255,255,.72); max-width:46ch; }
.hero-split .btn-row{ margin-top:clamp(1.75rem,3.5vw,2.5rem); }

/* Vertical measurement rail (decorative) */
.hero-rail{
  display:none; position:absolute; left:0; top:0; bottom:0; width:1px;
  background:var(--line-dk); z-index:3;
}
@media (min-width:960px){ .hero-rail{ display:block; } }
.hero-rail i{ position:absolute; left:0; width:9px; height:1px; background:rgba(255,255,255,.34); }
.hero-rail i:nth-child(1){ top:18%; } .hero-rail i:nth-child(2){ top:34%; width:16px; background:var(--accent-hi); }
.hero-rail i:nth-child(3){ top:50%; } .hero-rail i:nth-child(4){ top:66%; }
.hero-rail i:nth-child(5){ top:82%; }

/* Hero stat strip under the copy */
.hero-meta{
  display:grid; grid-template-columns:minmax(0,1fr);
  gap:1px; margin-top:clamp(2rem,4vw,3rem);
  background:var(--line-dk); border:1px solid var(--line-dk);
}
@media (min-width:620px){ .hero-meta{ grid-template-columns:repeat(3,minmax(0,1fr)); } }
.hero-meta div{ background:var(--ink); padding:.95rem 1rem; }
.hero-meta dt{ font-family:var(--head); font-size:.625rem; letter-spacing:.17em; text-transform:uppercase; color:var(--steel-lt); margin-bottom:.3rem; }
.hero-meta dd{ margin:0; font-family:var(--head); font-size:.92rem; font-weight:500; color:#fff; line-height:1.3; }

/* 9b. INNER — typographic hero on dark ground with engineering grid */
.hero-type{
  background:var(--ink); color:rgba(255,255,255,.8);
  padding-top:calc(var(--hdr) + clamp(2.5rem,6vw,5rem));
  padding-bottom:clamp(2.5rem,6vw,5rem);
  position:relative; overflow:hidden;
}
.hero-type h1{ color:#fff; max-width:22ch; }
.hero-type .lede{ color:rgba(255,255,255,.72); max-width:56ch; margin-top:1.1rem; }
.hero-type__num{
  position:absolute; right:var(--gutter); top:calc(var(--hdr) + .5rem);
  font-family:var(--head); font-weight:600; font-size:clamp(4rem,13vw,10rem);
  line-height:1; color:rgba(255,255,255,.035); letter-spacing:-.05em;
  pointer-events:none; user-select:none;
}

/* 9c. INNER — offset hero: type on dark + inset tall photo panel */
.hero-offset{
  background:var(--ink); color:rgba(255,255,255,.8);
  padding-top:calc(var(--hdr) + clamp(2.25rem,5vw,4rem));
  padding-bottom:clamp(2.5rem,6vw,5rem);
  position:relative; overflow:hidden;
}
.hero-offset__grid{ display:grid; gap:clamp(2rem,4vw,3.5rem); grid-template-columns:1fr; align-items:center; }
@media (min-width:900px){ .hero-offset__grid{ grid-template-columns:1.15fr .85fr; } }
.hero-offset h1{ color:#fff; }
.hero-offset .lede{ color:rgba(255,255,255,.72); max-width:52ch; }
.hero-offset .fig{ background:var(--ink-1); }
@media (min-width:900px){ .hero-offset .fig{ max-height:min(72vh,620px); } }
.hero-offset .fig img{ width:100%; height:100%; object-fit:cover; object-position:center 38%; }
@media (max-width:899px){ .hero-offset .fig{ aspect-ratio:4/3; } }

/* 9d. INNER — full-bleed banner (landscape, decorative photography) */
.hero-banner{
  position:relative; background:var(--ink); color:#fff; overflow:hidden;
  display:flex; align-items:flex-end;
  min-height:clamp(420px,62vh,660px);
  padding-top:calc(var(--hdr) + 3rem); padding-bottom:clamp(2.5rem,5vw,4rem);
}
.hero-banner__bg{ position:absolute; inset:0; z-index:0; }
.hero-banner__bg img{ width:100%; height:100%; object-fit:cover; object-position:center 42%; }
.hero-banner__bg::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(10,12,14,.86) 0%, rgba(10,12,14,.52) 42%, rgba(10,12,14,.92) 100%);
}
.hero-banner .shell{ position:relative; z-index:1; }
.hero-banner h1{ color:#fff; max-width:24ch; }
.hero-banner .lede{ color:rgba(255,255,255,.82); max-width:54ch; margin-top:1rem; }

/* Breadcrumbs */
.crumbs{ margin-bottom:clamp(1.5rem,3vw,2.25rem); }
.crumbs ol{ display:flex; flex-wrap:wrap; align-items:center; gap:.5rem; list-style:none; margin:0; padding:0; font-size:.775rem; letter-spacing:.04em; }
.crumbs li{ margin:0; display:flex; align-items:center; gap:.5rem; color:rgba(255,255,255,.52); }
.crumbs li + li::before{ content:"/"; color:rgba(255,255,255,.28); }
.crumbs a{ color:rgba(255,255,255,.68); transition:color .2s; }
.crumbs a:hover{ color:#fff; text-decoration:underline; text-underline-offset:3px; }
.crumbs [aria-current="page"]{ color:#fff; }

/* ---------- 10. Value / trust strip ----------------------------------- */
.vstrip{ border-block:1px solid var(--line-dk); background:var(--ink-1); }
.vstrip__grid{
  display:grid; grid-template-columns:1fr; gap:1px; background:var(--line-dk-sf);
}
@media (min-width:620px){ .vstrip__grid{ grid-template-columns:repeat(2,1fr); } }
@media (min-width:1000px){ .vstrip__grid{ grid-template-columns:repeat(5,1fr); } }
.vstrip__item{
  background:var(--ink-1); padding:clamp(1.5rem,2.6vw,2.1rem) clamp(1.15rem,2vw,1.6rem);
  display:flex; flex-direction:column; gap:.7rem;
  transition:background .3s var(--ease);
}
.vstrip__item:hover{ background:var(--ink-2); }
.vstrip__item svg{ color:var(--accent-hi); flex:none; }
.vstrip__item h3{ font-size:.955rem; color:#fff; margin:0; letter-spacing:-.008em; line-height:1.25; }
.vstrip__item p{ font-size:.855rem; line-height:1.55; color:var(--steel-lt); margin:0; }

/* ---------- 11. Editorial split -------------------------------------- */
.esplit{ display:grid; gap:clamp(2rem,5vw,4.5rem); grid-template-columns:minmax(0,1fr); align-items:center; }
@media (min-width:920px){
  .esplit{ grid-template-columns:.92fr 1.08fr; }
  .esplit--flip{ grid-template-columns:1.08fr .92fr; }
  .esplit--flip .esplit__media{ order:2; }
}
.esplit__media{ position:relative; }
.esplit__body h2{ margin-bottom:1rem; }

/* Floating data card over media */
.datacard{
  position:absolute; z-index:3;
  background:var(--ink); color:#fff;
  padding:1.1rem 1.25rem; border-radius:var(--r);
  border:1px solid var(--line-dk);
  max-width:min(84%,270px);
  box-shadow:0 18px 44px -20px rgba(10,12,14,.55);
}
.datacard--br{ right:clamp(-.5rem,-1vw,-1.25rem); bottom:clamp(1rem,3vw,1.75rem); }
.datacard--bl{ left:clamp(-.5rem,-1vw,-1.25rem); bottom:clamp(1rem,3vw,1.75rem); }
.datacard .idx{ display:block; margin-bottom:.45rem; }
.datacard p{ font-size:.845rem; line-height:1.5; color:rgba(255,255,255,.78); margin:0; }
@media (max-width:560px){ .datacard{ position:static; max-width:none; margin-top:1rem; box-shadow:none; } }

/* ---------- 12. Cards ------------------------------------------------- */
.cards{ display:grid; gap:clamp(1rem,2vw,1.5rem); grid-template-columns:minmax(0,1fr); }
@media (min-width:640px){ .cards--2{ grid-template-columns:repeat(2,1fr); } }
@media (min-width:640px){ .cards--3{ grid-template-columns:repeat(2,1fr); } }
@media (min-width:980px){ .cards--3{ grid-template-columns:repeat(3,1fr); } }
@media (min-width:640px){ .cards--4{ grid-template-columns:repeat(2,1fr); } }
@media (min-width:1100px){ .cards--4{ grid-template-columns:repeat(4,1fr); } }

.card{
  position:relative; display:flex; flex-direction:column;
  background:var(--paper); border:1px solid var(--line); border-radius:var(--r);
  overflow:hidden;
  transition:border-color .3s var(--ease), transform .35s var(--ease), box-shadow .35s var(--ease);
}
.card:hover{ border-color:rgba(10,12,14,.24); transform:translateY(-3px); box-shadow:0 20px 46px -26px rgba(10,12,14,.30); }
.card__body{ padding:clamp(1.15rem,2.2vw,1.6rem); display:flex; flex-direction:column; flex:1; gap:.6rem; }
.card__body h3{ margin:0; font-size:1.09rem; letter-spacing:-.014em; }
.card__body p{ margin:0; font-size:.9rem; line-height:1.6; color:var(--steel); }
.card__foot{ margin-top:auto; padding-top:1rem; }
.card .fig{ border-radius:0; }

/* Dark card */
.card--dark{ background:var(--ink-1); border-color:var(--line-dk); }
.card--dark:hover{ border-color:rgba(255,255,255,.26); box-shadow:0 20px 46px -26px rgba(0,0,0,.6); }
.card--dark h3{ color:#fff; }
.card--dark p{ color:var(--steel-lt); }

/* Whole-card link */
.card--link::after{ content:""; position:absolute; inset:0; z-index:4; }

/* Numbered technical card (no photo) — line-art glyph + index */
.tcard{
  position:relative; display:flex; flex-direction:column; gap:.9rem;
  padding:clamp(1.35rem,2.5vw,1.9rem);
  background:var(--paper); border:1px solid var(--line); border-radius:var(--r);
  transition:border-color .3s var(--ease), background .3s var(--ease), transform .35s var(--ease);
}
.tcard:hover{ border-color:rgba(10,12,14,.24); transform:translateY(-3px); }
.tcard__top{ display:flex; align-items:flex-start; justify-content:space-between; gap:1rem; }
.tcard svg{ color:var(--ink); flex:none; }
.tcard h3{ margin:0; font-size:1.05rem; letter-spacing:-.014em; }
.tcard p{ margin:0; font-size:.895rem; line-height:1.6; color:var(--steel); }
.tcard > .tlink{ margin-top:auto; align-self:flex-start; }
.tcard__spec{ display:flex; flex-wrap:wrap; gap:.4rem; }
.tcard--dark{ background:var(--ink-1); border-color:var(--line-dk); }
.tcard--dark svg{ color:var(--accent-hi); }
.tcard--dark h3{ color:#fff; }
.tcard--dark p{ color:var(--steel-lt); }
.tcard--dark:hover{ border-color:rgba(255,255,255,.26); background:var(--ink-2); }

/* ---------- 13. Asymmetric showcase (home products) ------------------- */
.showcase{ display:grid; gap:clamp(1rem,2vw,1.5rem); grid-template-columns:1fr; }
@media (min-width:760px){
  .showcase{ grid-template-columns:repeat(2,1fr); }
  .showcase__feature{ grid-column:span 2; }
}
@media (min-width:1080px){
  .showcase{ grid-template-columns:repeat(12,1fr); grid-auto-rows:minmax(0,auto); }
  .showcase__feature{ grid-column:span 5; }
  .showcase__wide{ grid-column:span 7; }
  .showcase__third{ grid-column:span 4; }
  .showcase__full{ grid-column:span 12; }
}
.showcase__feature{ display:flex; flex-direction:column; }
.showcase__feature .fig img{ width:100%; height:auto; }

/* Wide media card: photo left, copy right */
.mcard{
  display:grid; grid-template-columns:1fr; align-items:stretch;
  background:var(--paper); border:1px solid var(--line); border-radius:var(--r);
  overflow:hidden; position:relative;
  transition:border-color .3s var(--ease), transform .35s var(--ease), box-shadow .35s var(--ease);
}
.mcard:hover{ border-color:rgba(10,12,14,.24); transform:translateY(-3px); box-shadow:0 20px 46px -26px rgba(10,12,14,.30); }
@media (min-width:520px){ .mcard{ grid-template-columns:.85fr 1.15fr; } }
.mcard .fig{ border-radius:0; }
.mcard__body{ padding:clamp(1.15rem,2.2vw,1.6rem); display:flex; flex-direction:column; gap:.6rem; justify-content:center; }
.mcard__body h3{ margin:0; font-size:1.05rem; }
.mcard__body p{ margin:0; font-size:.885rem; line-height:1.6; color:var(--steel); }
.mcard--dark{ background:var(--ink-1); border-color:var(--line-dk); }
.mcard--dark h3{ color:#fff; } .mcard--dark p{ color:var(--steel-lt); }

/* ---------- 14. Spec list / definition rows --------------------------- */
.speclist{ list-style:none; margin:0; padding:0; border-top:1px solid var(--line); }
.dark .speclist{ border-top-color:var(--line-dk); }
.speclist li{
  display:grid; grid-template-columns:1fr; gap:.2rem;
  padding:.95rem 0; margin:0; border-bottom:1px solid var(--line);
}
.dark .speclist li{ border-bottom-color:var(--line-dk); }
@media (min-width:560px){ .speclist li{ grid-template-columns:minmax(0,13rem) 1fr; gap:1.5rem; align-items:baseline; } }
.speclist dt, .speclist .k{
  font-family:var(--head); font-size:.705rem; font-weight:600;
  letter-spacing:.15em; text-transform:uppercase; color:var(--steel);
}
.dark .speclist dt, .dark .speclist .k{ color:var(--steel-lt); }
.speclist dd, .speclist .v{ margin:0; font-size:.945rem; line-height:1.6; }

/* Checked feature list */
.flist{ list-style:none; margin:0; padding:0; display:grid; gap:.7rem; }
.flist li{ position:relative; padding-left:1.65rem; margin:0; font-size:.945rem; line-height:1.6; }
.flist li::before{
  content:""; position:absolute; left:0; top:.58em;
  width:8px; height:8px; border-radius:1px;
  border:1px solid var(--accent); background:var(--accent-dim);
}
.dark .flist li::before{ border-color:var(--accent-hi); background:rgba(242,85,58,.18); }

/* ---------- 15. Process line (desktop horizontal / mobile vertical) --- */
.process{ position:relative; }

/* Mobile: vertical timeline */
.process__list{ list-style:none; margin:0; padding:0; display:grid; gap:0; }
.process__step{
  position:relative; margin:0; padding:0 0 clamp(1.75rem,3.5vw,2.5rem) clamp(2.5rem,5vw,3.25rem);
}
.process__step:last-child{ padding-bottom:0; }
.process__step::before{ /* rail */
  content:""; position:absolute; left:9px; top:1.5rem; bottom:0; width:1px; background:var(--line);
}
.dark .process__step::before{ background:var(--line-dk); }
.process__step:last-child::before{ display:none; }
.process__step::after{ /* node */
  content:""; position:absolute; left:4px; top:.5rem;
  width:11px; height:11px; border-radius:50%;
  background:var(--paper); border:1.5px solid var(--accent);
  transition:background .4s var(--ease), box-shadow .4s var(--ease);
}
.dark .process__step::after{ background:var(--ink); border-color:var(--accent-hi); }
.process__step.in::after{ background:var(--accent); box-shadow:0 0 0 4px var(--accent-dim); }
.dark .process__step.in::after{ background:var(--accent-hi); box-shadow:0 0 0 4px rgba(242,85,58,.18); }
.process__step .idx{ display:block; margin-bottom:.4rem; }
.process__step h3,
.process__step .lbl{ font-family:var(--head); font-weight:600; color:var(--ink);
  font-size:1.06rem; line-height:1.15; margin:0 0 .45rem; letter-spacing:-.014em; }
.dark .process__step .lbl{ color:#fff; }
.process__step p{ margin:0; font-size:.9rem; line-height:1.62; color:var(--steel); max-width:46ch; }
.dark .process__step p{ color:var(--steel-lt); }

/* Desktop: horizontal, animated connecting line */
@media (min-width:1000px){
  .process--h .process__list{
    grid-template-columns:repeat(var(--cols,7),minmax(0,1fr));
    gap:clamp(.75rem,1.6vw,1.5rem);
    padding-top:2.6rem;
    position:relative;
  }
  .process--h .process__list::before{ /* base rail */
    content:""; position:absolute; left:0; right:0; top:.55rem; height:1px; background:var(--line);
  }
  .dark .process--h .process__list::before{ background:var(--line-dk); }
  .process--h .process__list::after{ /* progress rail */
    content:""; position:absolute; left:0; top:.55rem; height:1px; background:var(--accent);
    width:0; transition:width 1.5s var(--ease-out);
  }
  .dark .process--h .process__list::after{ background:var(--accent-hi); }
  .process--h.in .process__list::after{ width:100%; }
  .process--h .process__step{ padding:0; }
  .process--h .process__step::before{ display:none; }
  .process--h .process__step::after{
    left:0; top:-2.6rem; width:9px; height:9px;
  }
  .process--h .process__step p{ font-size:.855rem; max-width:none; }
  .process--h .process__step h3,
  .process--h .process__step .lbl{ font-size:.985rem; }
}

/* Compact numbered stage blocks (manufacturing page) */
.stages{ display:grid; gap:0; }
.stage{
  display:grid; grid-template-columns:1fr; gap:.75rem;
  padding-block:clamp(1.75rem,3.5vw,2.75rem);
  border-top:1px solid var(--line);
  position:relative;
}
.dark .stage{ border-top-color:var(--line-dk); }
.stage:last-child{ border-bottom:1px solid var(--line); }
.dark .stage:last-child{ border-bottom-color:var(--line-dk); }
@media (min-width:800px){
  .stage{ grid-template-columns:6.5rem minmax(0,20rem) minmax(0,1fr); gap:clamp(1.25rem,3vw,2.75rem); align-items:start; }
}
.stage__n{
  font-family:var(--head); font-weight:600; font-size:clamp(1.6rem,2.8vw,2.15rem);
  line-height:1; letter-spacing:-.03em; color:var(--paper-3);
  font-variant-numeric:tabular-nums;
}
.dark .stage__n{ color:rgba(255,255,255,.15); }
.stage.in .stage__n{ color:var(--accent); transition:color .6s var(--ease); }
.dark .stage.in .stage__n{ color:var(--accent-hi); }
.stage h3{ margin:0; font-size:1.19rem; letter-spacing:-.018em; }
.stage__body p{ margin:0 0 .8rem; font-size:.93rem; line-height:1.68; color:var(--steel); }
.dark .stage__body p{ color:var(--steel-lt); }
.stage__body p:last-child{ margin-bottom:0; }
.stage__tags{ display:flex; flex-wrap:wrap; gap:.4rem; margin-top:.9rem; }
.tag{
  font-family:var(--head); font-size:.665rem; font-weight:600;
  letter-spacing:.13em; text-transform:uppercase;
  padding:.34rem .6rem; border:1px solid var(--line); border-radius:2px; color:var(--steel);
}
.dark .tag{ border-color:var(--line-dk); color:var(--steel-lt); }

/* ---------- 16. Applications editorial rows -------------------------- */
.arow{
  display:grid; gap:clamp(1.5rem,4vw,3.5rem); grid-template-columns:minmax(0,1fr);
  padding-block:clamp(2.5rem,5vw,4rem);
  border-top:1px solid var(--line);
  align-items:start;
}
.arow:first-of-type{ border-top:0; padding-top:0; }
@media (min-width:880px){
  .arow{ grid-template-columns:.85fr 1.15fr; }
  .arow--flip{ grid-template-columns:1.15fr .85fr; }
  .arow--flip .arow__media{ order:2; }
}
.arow__body h2{ font-size:clamp(1.5rem,2.4vw,2.05rem); margin-bottom:.85rem; }
.arow__media .fig{ background:var(--paper-2); }

/* ---------- 17. Dark quality band ------------------------------------ */
.band{ position:relative; background:var(--ink); color:rgba(255,255,255,.8); overflow:hidden; }
.band__grid{ display:grid; gap:clamp(2rem,4.5vw,4rem); grid-template-columns:1fr; align-items:center; }
@media (min-width:940px){ .band__grid{ grid-template-columns:1.05fr .95fr; } }
.band .fig{ background:var(--ink-2); }

/* Metric tiles (non-numeric — descriptive, never fabricated figures) */
.tiles{ display:grid; gap:1px; background:var(--line-dk); border:1px solid var(--line-dk); grid-template-columns:repeat(2,1fr); }
@media (min-width:700px){ .tiles--4{ grid-template-columns:repeat(4,1fr); } }
.tiles > div{ background:var(--ink); padding:clamp(1.1rem,2.2vw,1.5rem); }
.tiles h3{ font-size:.9rem; color:#fff; margin:0 0 .35rem; letter-spacing:-.008em; }
.tiles p{ font-size:.82rem; line-height:1.5; color:var(--steel-lt); margin:0; }

/* ---------- 18. CTA band --------------------------------------------- */
.cta{
  position:relative; background:var(--ink); color:rgba(255,255,255,.8);
  overflow:hidden; isolation:isolate;
}
.cta::before{
  content:""; position:absolute; inset:0; z-index:-1;
  background:
    radial-gradient(60% 100% at 12% 0%, rgba(196,41,26,.20) 0%, transparent 62%),
    linear-gradient(180deg, #12161A 0%, var(--ink) 100%);
}
.cta__grid{ display:grid; gap:clamp(1.5rem,3.5vw,3rem); grid-template-columns:1fr; align-items:center; }
@media (min-width:900px){ .cta__grid{ grid-template-columns:1.25fr .75fr; } }
.cta h2{ color:#fff; max-width:26ch; }
.cta .lede{ color:rgba(255,255,255,.74); max-width:52ch; }
.cta__actions{ display:flex; flex-direction:column; gap:.85rem; align-items:flex-start; }
@media (min-width:900px){ .cta__actions{ align-items:flex-end; } }
.cta__direct{ display:flex; flex-direction:column; gap:.15rem; }
@media (min-width:900px){ .cta__direct{ text-align:right; } }
.cta__direct a{ font-family:var(--head); font-size:1.02rem; font-weight:500; color:#fff; min-height:40px; display:inline-flex; align-items:center; }
@media (min-width:900px){ .cta__direct a{ justify-content:flex-end; } }
.cta__direct a:hover{ color:var(--accent-hi); }
.cta__direct span{ font-family:var(--head); font-size:.655rem; letter-spacing:.17em; text-transform:uppercase; color:var(--steel-lt); }

/* ---------- 19. FAQ (native details) --------------------------------- */
.faq{ border-top:1px solid var(--line); }
.dark .faq{ border-top-color:var(--line-dk); }
.faq details{ border-bottom:1px solid var(--line); }
.dark .faq details{ border-bottom-color:var(--line-dk); }
.faq summary{
  display:flex; align-items:flex-start; gap:1rem; justify-content:space-between;
  padding:1.2rem 0; cursor:pointer; list-style:none;
  font-family:var(--head); font-size:1.035rem; font-weight:500;
  letter-spacing:-.014em; color:var(--ink); min-height:56px;
  transition:color .22s var(--ease);
}
.dark .faq summary{ color:#fff; }
.faq summary::-webkit-details-marker{ display:none; }
.faq summary:hover{ color:var(--accent); }
.dark .faq summary:hover{ color:var(--accent-hi); }
.faq summary .ic{
  position:relative; flex:none; width:20px; height:20px; margin-top:.15rem;
}
.faq summary .ic::before,.faq summary .ic::after{
  content:""; position:absolute; left:50%; top:50%; background:var(--accent);
  transform:translate(-50%,-50%); transition:transform .3s var(--ease), opacity .3s var(--ease);
}
.dark .faq summary .ic::before,.dark .faq summary .ic::after{ background:var(--accent-hi); }
.faq summary .ic::before{ width:13px; height:1.5px; }
.faq summary .ic::after{ width:1.5px; height:13px; }
.faq details[open] summary .ic::after{ transform:translate(-50%,-50%) rotate(90deg); opacity:0; }
.faq__a{ padding:0 0 1.35rem; max-width:72ch; }
.faq__a p{ font-size:.945rem; line-height:1.72; color:var(--steel); }
.dark .faq__a p{ color:var(--steel-lt); }
.faq__a p:last-child{ margin-bottom:0; }

/* ---------- 20. Contact layout & form -------------------------------- */
.contact-grid{ display:grid; gap:clamp(2rem,4.5vw,4rem); grid-template-columns:1fr; align-items:start; }
@media (min-width:940px){ .contact-grid{ grid-template-columns:.78fr 1.22fr; } }

.cdetail{ display:grid; gap:0; border-top:1px solid var(--line); }
.cdetail__item{ padding-block:clamp(1.25rem,2.5vw,1.65rem); border-bottom:1px solid var(--line); }
.cdetail__item span{
  display:block; font-family:var(--head); font-size:.665rem; font-weight:600;
  letter-spacing:.17em; text-transform:uppercase; color:var(--steel); margin-bottom:.5rem;
}
.cdetail__item a{
  display:inline-flex; align-items:center; gap:.6rem;
  font-family:var(--head); font-size:clamp(1.06rem,1.9vw,1.3rem); font-weight:500;
  letter-spacing:-.018em; color:var(--ink); min-height:44px;
  word-break:break-word; transition:color .22s var(--ease);
}
.cdetail__item a:hover{ color:var(--accent); }
.cdetail__item a svg{ flex:none; color:var(--accent); }
.cdetail__item p{ font-size:.895rem; color:var(--steel); margin:.4rem 0 0; }
.cdetail__item .cval{ display:block; font-family:var(--head); font-size:clamp(1.06rem,1.9vw,1.3rem); font-weight:500; letter-spacing:-.018em; color:var(--ink); margin:0; word-break:break-word; }

/* Form */
.form{ background:var(--paper-1); border:1px solid var(--line); border-radius:var(--r-lg); padding:clamp(1.35rem,3vw,2.5rem); }
.form__grid{ display:grid; gap:clamp(.9rem,2vw,1.25rem); grid-template-columns:1fr; }
@media (min-width:600px){ .form__grid{ grid-template-columns:repeat(2,1fr); } .field--full{ grid-column:1/-1; } }

.field{ display:flex; flex-direction:column; gap:.4rem; min-width:0; }
.field label{
  font-family:var(--head); font-size:.7rem; font-weight:600;
  letter-spacing:.13em; text-transform:uppercase; color:var(--graphite);
  display:flex; align-items:center; gap:.35rem;
}
.field label .req{ color:var(--accent); font-size:.85rem; line-height:1; }
.field input, .field select, .field textarea{
  width:100%; padding:.82rem .95rem;
  background:var(--paper); color:var(--ink);
  border:1px solid var(--line); border-radius:var(--r);
  font-size:.965rem; line-height:1.5; min-height:48px;
  transition:border-color .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease);
  appearance:none; -webkit-appearance:none;
}
.field textarea{ resize:vertical; min-height:132px; }
.field select{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5l5-5' fill='none' stroke='%235C6670' stroke-width='1.4' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:right 1rem center; padding-right:2.5rem;
}
.field input:hover, .field select:hover, .field textarea:hover{ border-color:rgba(10,12,14,.26); }
.field input:focus, .field select:focus, .field textarea:focus{
  outline:none; border-color:var(--accent);
  box-shadow:0 0 0 3px var(--accent-dim);
}
.field input::placeholder, .field textarea::placeholder{ color:#6B737C; }

.field__err{
  display:none; align-items:center; gap:.4rem;
  font-size:.8rem; line-height:1.4; color:#A61E10;
}
.field__err::before{ content:"!"; flex:none; width:14px; height:14px; border-radius:50%; background:#A61E10; color:#fff; font-size:.62rem; font-weight:700; display:grid; place-items:center; }
.field.is-invalid input, .field.is-invalid select, .field.is-invalid textarea{
  border-color:#A61E10; box-shadow:0 0 0 3px rgba(166,30,16,.10);
}
.field.is-invalid .field__err{ display:flex; }

.form__note{ font-size:.82rem; line-height:1.6; color:var(--steel); margin:1.1rem 0 0; }
.form__actions{ display:flex; flex-wrap:wrap; align-items:center; gap:1rem; margin-top:1.4rem; }
.form__actions .btn{ min-width:190px; justify-content:center; }

/* Loading / status states */
.btn.is-loading{ pointer-events:none; opacity:.72; }
.btn .spin{ display:none; width:15px; height:15px; border:1.7px solid rgba(255,255,255,.35); border-top-color:#fff; border-radius:50%; animation:spin .7s linear infinite; }
.btn.is-loading .spin{ display:block; }
.btn.is-loading .arw{ display:none; }
@keyframes spin{ to{ transform:rotate(360deg); } }

.formstatus{
  display:none; gap:.75rem; align-items:flex-start;
  margin-top:1.25rem; padding:1rem 1.15rem; border-radius:var(--r);
  font-size:.9rem; line-height:1.6;
}
.formstatus.is-shown{ display:flex; }
.formstatus--ok{ background:rgba(17,102,68,.07); border:1px solid rgba(17,102,68,.3); color:#0E5A3C; }
.formstatus--err{ background:rgba(166,30,16,.06); border:1px solid rgba(166,30,16,.3); color:#8E1A0E; }
.formstatus svg{ flex:none; margin-top:.15rem; }
.formstatus strong{ color:inherit; }
.formstatus a{ color:inherit; text-decoration:underline; text-underline-offset:2px; }

/* ---------- 21. Footer ----------------------------------------------- */
.site-footer{ background:var(--ink); color:var(--steel-lt); }
.site-footer h2, .site-footer h3{ color:#fff; }
.footer-top{ padding-block:clamp(3rem,6vw,4.75rem); }
.footer-grid{ display:grid; gap:clamp(2rem,4vw,3rem); grid-template-columns:1fr; }
@media (min-width:600px){ .footer-grid{ grid-template-columns:repeat(2,1fr); } }
@media (min-width:1000px){ .footer-grid{ grid-template-columns:1.4fr .82fr 1.0fr 1.06fr; } }

.footer-brand .brand{ margin-bottom:1.1rem; }
.footer-brand p{ font-size:.895rem; line-height:1.68; max-width:38ch; margin:0; }
.footer-col h3{
  font-family:var(--head); font-size:.685rem; font-weight:600;
  letter-spacing:.17em; text-transform:uppercase; color:#fff;
  margin:0 0 1.1rem; padding-bottom:.75rem; border-bottom:1px solid var(--line-dk);
}
.footer-col ul{ list-style:none; margin:0; padding:0; display:grid; gap:.1rem; }
.footer-col li{ margin:0; }
.footer-col a{
  display:inline-flex; align-items:center; min-height:40px;
  font-size:.9rem; color:var(--steel-lt);
  transition:color .2s var(--ease), transform .28s var(--ease);
}
.footer-col a:hover{ color:#fff; }
@media (min-width:1000px){ .footer-col a:hover{ transform:translateX(3px); } }
.footer-col a[aria-current="page"]{ color:#fff; }

.footer-contact a{ font-family:var(--head); font-size:1rem; font-weight:500; color:#fff; word-break:break-word; }
.footer-contact a:hover{ color:var(--accent-hi); }
.footer-contact span{ display:block; font-family:var(--head); font-size:.62rem; letter-spacing:.17em; text-transform:uppercase; color:var(--steel-lt); margin-top:.6rem; }
.footer-contact li:first-child span{ margin-top:0; }
.footer-contact .fval{ font-family:var(--head); font-size:1rem; font-weight:500; color:#fff; margin:0; word-break:break-word; }

/* Social icons */
.footer-col ul.social{ display:flex; flex-wrap:wrap; gap:.6rem; margin-top:.25rem; }
.social li{ margin:0; }
.social a, .social span.si{
  display:grid; place-items:center; width:44px; height:44px;
  border:1px solid var(--line-dk); border-radius:var(--r);
  color:var(--steel-lt);
  transition:color .24s var(--ease), border-color .24s var(--ease), background .24s var(--ease), transform .24s var(--ease);
}
.social a:hover{ color:#fff; border-color:rgba(255,255,255,.34); background:rgba(255,255,255,.06); transform:translateY(-2px); }
.social span.si{ opacity:.42; cursor:not-allowed; }
.social svg{ width:17px; height:17px; }
.social-note{ font-size:.78rem; line-height:1.6; margin:.95rem 0 0; color:var(--steel-lt); }
.social-note a{ display:inline; min-height:0; }

.footer-bottom{ border-top:1px solid var(--line-dk); padding-block:1.5rem; }
.footer-bottom__inner{
  display:flex; flex-direction:column; gap:.85rem;
  justify-content:space-between; align-items:flex-start;
  font-size:.815rem; line-height:1.6;
}
@media (min-width:760px){ .footer-bottom__inner{ flex-direction:row; align-items:center; gap:1.5rem; } }
.footer-bottom a{ color:#fff; }
.footer-bottom a:hover{ color:var(--accent-hi); text-decoration:underline; text-underline-offset:3px; }
.credit{ display:flex; align-items:center; gap:.45rem; flex-wrap:wrap; }

/* ---------- 22. Misc utilities --------------------------------------- */
.stack-sm > * + *{ margin-top:.85rem; }
.stack > * + *{ margin-top:1.4rem; }
.stack-lg > * + *{ margin-top:clamp(2rem,4vw,3rem); }
.mt-0{ margin-top:0; } .mb-0{ margin-bottom:0; }
.mt-1{ margin-top:1rem; } .mt-2{ margin-top:1.75rem; } .mt-3{ margin-top:2.5rem; }
.center{ text-align:center; }
.nowrap{ white-space:nowrap; }
.maxw-prose{ max-width:68ch; }
.maxw-sm{ max-width:46ch; }

/* Two-column prose */
.prose-2{ column-gap:clamp(2rem,4vw,3.5rem); }
@media (min-width:900px){ .prose-2{ columns:2; } .prose-2 p{ break-inside:avoid; } }

/* Table */
.tbl-wrap{ overflow-x:auto; -webkit-overflow-scrolling:touch; border:1px solid var(--line); border-radius:var(--r); }
.dark .tbl-wrap{ border-color:var(--line-dk); }
table.tbl{ width:100%; border-collapse:collapse; min-width:560px; font-size:.9rem; }
table.tbl caption{ text-align:left; padding:.9rem 1rem; font-family:var(--head); font-size:.68rem; letter-spacing:.16em; text-transform:uppercase; color:var(--steel); border-bottom:1px solid var(--line); }
.dark table.tbl caption{ color:var(--steel-lt); border-bottom-color:var(--line-dk); }
table.tbl th, table.tbl td{ text-align:left; padding:.82rem 1rem; border-bottom:1px solid var(--line); vertical-align:top; }
.dark table.tbl th, .dark table.tbl td{ border-bottom-color:var(--line-dk); }
table.tbl th{ font-family:var(--head); font-size:.695rem; font-weight:600; letter-spacing:.13em; text-transform:uppercase; color:var(--steel); background:var(--paper-1); }
.dark table.tbl th{ color:var(--steel-lt); background:var(--ink-1); }
table.tbl tbody tr:last-child th, table.tbl tbody tr:last-child td{ border-bottom:0; }
table.tbl td{ color:var(--steel); }
.dark table.tbl td{ color:var(--steel-lt); }

/* Notice / disclosure box */
.notice{
  border:1px solid var(--line); border-left:2px solid var(--accent);
  background:var(--paper-1); border-radius:0 var(--r) var(--r) 0;
  padding:clamp(1.1rem,2.2vw,1.5rem);
}
.dark .notice{ background:var(--ink-1); border-color:var(--line-dk); border-left-color:var(--accent-hi); }
.notice h3{ font-size:.98rem; margin:0 0 .5rem; }
.notice p{ font-size:.885rem; line-height:1.68; color:var(--steel); margin:0; }
.dark .notice p{ color:var(--steel-lt); }

/* Diagram frame for inline SVG technical drawings */
.diagram{
  border:1px solid var(--line); border-radius:var(--r);
  background:var(--paper); padding:clamp(1.15rem,2.5vw,2rem);
  position:relative; overflow:hidden;
}
.diagram--dk{ background:var(--ink-1); border-color:var(--line-dk); }
.diagram svg{ width:100%; height:auto; display:block; }
.diagram__cap{
  display:flex; flex-wrap:wrap; gap:.5rem 1.25rem; margin-top:1.15rem;
  padding-top:.95rem; border-top:1px solid var(--line);
  font-family:var(--head); font-size:.665rem; letter-spacing:.13em; text-transform:uppercase; color:var(--steel);
}
.diagram--dk .diagram__cap{ border-top-color:var(--line-dk); color:var(--steel-lt); }
.diagram__cap b{ color:var(--accent); font-weight:600; }
.diagram--dk .diagram__cap b{ color:var(--accent-hi); }

/* Print */
@media print{
  .site-header,.mobile-nav,.nav-toggle,.skip,.cta,.btn{ display:none !important; }
  body{ color:#000; background:#fff; font-size:11pt; }
  .dark,.band,.site-footer{ background:#fff !important; color:#000 !important; }
  .dark h1,.dark h2,.dark h3,.site-footer h3{ color:#000 !important; }
  a{ text-decoration:underline; }
  .sect{ padding-block:1.25rem; }
}

/* ---------- 23. Point grid (numbered explanatory columns) ------------- */
.pointgrid{ display:grid; grid-template-columns:1fr; column-gap:clamp(1.5rem,3.2vw,3.25rem); }
@media (min-width:680px){ .pointgrid{ grid-template-columns:repeat(2,minmax(0,1fr)); } }
@media (min-width:1060px){ .pointgrid{ grid-template-columns:repeat(3,minmax(0,1fr)); } }
.pointgrid > div{ padding-block:clamp(1.15rem,2.2vw,1.5rem); border-top:1px solid var(--line); }
.dark .pointgrid > div, .on-dark .pointgrid > div{ border-top-color:var(--line-dk); }
.pointgrid h3{ margin:0 0 .5rem; }
.pointgrid p{ margin:0; }

/* ---------- 24. Jump navigation (in-page category index) -------------- */
.jump{ display:grid; gap:0 clamp(1rem,2.5vw,2.5rem); list-style:none; margin:0; padding:0; }
@media (min-width:560px){ .jump{ grid-template-columns:repeat(2,minmax(0,1fr)); } }
@media (min-width:960px){ .jump{ grid-template-columns:repeat(3,minmax(0,1fr)); } }
.jump li{ margin:0; }
.jump a{
  display:flex; align-items:center; gap:.7rem;
  padding:.9rem .25rem; min-height:52px; border-top:1px solid var(--line-dk);
  font-family:var(--head); font-size:.895rem; font-weight:500;
  color:rgba(255,255,255,.82); letter-spacing:-.008em;
  transition:background .26s var(--ease), color .26s var(--ease), padding-left .3s var(--ease);
}
.jump a b{ font-size:.665rem; letter-spacing:.15em; color:var(--accent-hi); font-weight:600;
           font-variant-numeric:tabular-nums; flex:none; }
.jump a:hover, .jump a:focus-visible{ color:#fff; border-top-color:var(--accent-hi); padding-left:.5rem; }

/* Anchored sections must clear the fixed header when jumped to */
[id]{ scroll-margin-top:calc(var(--hdr) + 1.5rem); }

/* Long product rows: keep the visual alongside the specification while reading */
@media (min-width:880px){
  .arow__media--sticky{ position:sticky; top:calc(var(--hdr) + 1.75rem); }
}

/* ---------- 25. Grid/flex minimum-size containment -------------------- */
/* Grid and flex items default to min-width:auto, so a wide descendant
   (e.g. table.tbl has min-width:560px) forces its track to grow and pushes
   the page into horizontal overflow. Opt these tracks back to zero minimum
   and let the designated scroll container do the scrolling. */
.esplit > *, .arow > *, .band__grid > *, .cta__grid > *,
.contact-grid > *, .pointgrid > *, .hero-offset__grid > *,
.showcase > *, .cards > *, .stage > *{ min-width:0; }

.tbl-wrap{ min-width:0; max-width:100%; }
.diagram{ min-width:0; }
picture{ display:block; max-width:100%; }

/* Where the <img> is told to fill its box (object-fit crops), the <picture>
   wrapper has to fill it too, or height:100% resolves against an auto-height
   parent and the image collapses to its natural ratio. */
.hero-banner__bg picture,
.hero-split__media picture,
.hero-offset .fig picture,
.fig--ratio picture,
.fig--contain picture{ display:block; width:100%; height:100%; }