/* KERIS & KASTEEL LTD — keriskasteel.ltd
   Concept: a drawing sheet. The K of the mark is taken apart into three strokes
   (stem = software, arm = consulting, leg = mobile); rulers, title blocks and
   construction lines carry the motif through the page. */

:root {
  /* Brand palette (brandbook v0.1) */
  --paper: #F6F3EC;
  --ink: #202420;
  --ember: #C34427;
  --ember-dark: #A93A20;
  --ember-light: #EE7A58;      /* accent text on graphite only */
  --stone: #DEDACF;
  --slate: #62665F;
  --white: #FFFFFF;
  --ink-2: #2A2F2A;
  --paper-rgb: 246, 243, 236;
  --ink-rgb: 32, 36, 32;

  --bg: var(--paper);
  --text: var(--ink);
  --text-dim: var(--slate);
  --line: rgba(var(--ink-rgb), .16);
  --line-strong: rgba(var(--ink-rgb), .42);
  --line-dark: rgba(var(--paper-rgb), .16);
  --text-on-dark: var(--paper);
  --dim-on-dark: rgba(var(--paper-rgb), .72);

  /* Type */
  --font: 'Geist', Arial, Helvetica, sans-serif;
  --mono: 'Geist Mono', Consolas, 'Courier New', monospace;
  --t-hero: clamp(52px, 7.4vw, 112px);
  --t-h2: clamp(34px, 4.2vw, 60px);
  --t-h3: clamp(22px, 2vw, 28px);
  --t-h4: 20px;
  --t-lead: clamp(18px, 1.45vw, 21px);
  --t-body: 17px;
  --t-small: 15px;
  --t-label: 12px;

  /* Space */
  --pad-x: clamp(20px, 5vw, 72px);
  --section-py: clamp(72px, 9vw, 128px);
  --nav-h: 76px;
  --radius: 4px;
  --control-h: 48px;
  --ease: cubic-bezier(.2, .7, .2, 1);
  --dur: 180ms;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 12px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0 auto;
  max-width: 1440px;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: var(--t-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
html { background: var(--bg); }
img, svg { display: block; max-width: 100%; }
h1, h2, h3, h4, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; }
button, input, textarea, select { font: inherit; color: inherit; }

:focus-visible { outline: 3px solid var(--ember); outline-offset: 3px; border-radius: 2px; }
.tile-dark :focus-visible, .engagements :focus-visible, .site-footer :focus-visible { outline-color: var(--paper); }

.skip-link { position: absolute; left: 16px; top: -60px; z-index: 100; padding: 10px 16px; background: var(--ink); color: var(--paper); text-decoration: none; border-radius: var(--radius); transition: top var(--dur); }
.skip-link:focus { top: 12px; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.wrap { padding: 0 var(--pad-x); }

/* ---------- Labels ---------- */
.label, .eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--mono); font-size: var(--t-label); font-weight: 500;
  letter-spacing: .08em; text-transform: uppercase; color: var(--text-dim);
}
.label-num { color: var(--ember); }
.label-num::after { content: ""; display: inline-block; width: 28px; height: 1px; margin-left: 12px; vertical-align: middle; background: currentColor; }
.label-on-dark { color: var(--dim-on-dark); }
.label-on-dark .label-num { color: var(--ember-light); }
.eyebrow .tick { width: 10px; height: 10px; background: var(--ember); }

/* ---------- Buttons ---------- */
.btn {
  --btn-bg: transparent; --btn-fg: var(--ink); --btn-bd: var(--line-strong);
  display: inline-flex; align-items: center; justify-content: center; gap: 12px;
  min-height: var(--control-h); padding: 0 22px;
  border: 1px solid var(--btn-bd); border-radius: var(--radius);
  background: var(--btn-bg); color: var(--btn-fg);
  font-size: 16px; font-weight: 600; letter-spacing: -.005em; text-decoration: none; white-space: nowrap;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.btn svg { flex: none; transition: transform var(--dur) var(--ease); }
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(1px); }
.btn-solid { --btn-bg: var(--ember); --btn-fg: var(--white); --btn-bd: var(--ember); }
.btn-solid:hover { --btn-bg: var(--ink); --btn-bd: var(--ink); }
.btn-solid:hover svg { transform: translate(2px, -2px); }
.btn-line:hover { --btn-bd: var(--ink); --btn-bg: var(--ink); --btn-fg: var(--paper); }
.btn-text { --btn-bd: transparent; padding: 0 4px; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 6px; }
.btn-text:hover { color: var(--ember-dark); }
.btn-text:hover svg { transform: translateY(3px); }
.btn[disabled] { cursor: not-allowed; opacity: .55; transform: none; }
.btn-solid[disabled]:hover { --btn-bg: var(--ember); --btn-bd: var(--ember); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur);
}
/* blur lives on a pseudo-element: backdrop-filter on the header itself would trap the fixed mobile menu */
.site-header::before { content: ""; position: absolute; inset: 0; z-index: -1; background: rgba(var(--paper-rgb), .94); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); }
.site-header.scrolled { border-bottom-color: var(--line); }
.header-inner { height: var(--nav-h); padding: 0 var(--pad-x); display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: block; flex: none; }
.brand img { width: clamp(200px, 17vw, 250px); height: auto; }
.main-nav { display: flex; align-items: center; gap: clamp(20px, 3vw, 44px); }
.main-nav ul { display: flex; gap: clamp(18px, 2.4vw, 36px); }
.main-nav ul a {
  position: relative; display: inline-flex; align-items: baseline; gap: 8px; padding: 6px 0;
  font-size: var(--t-small); font-weight: 500; text-decoration: none;
}
.main-nav .idx { font-family: var(--mono); font-size: 11px; color: var(--slate); }
.main-nav ul a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--ember); transform: scaleX(0); transform-origin: left; transition: transform var(--dur) var(--ease); }
.main-nav ul a:hover::after, .main-nav ul a.active::after { transform: scaleX(1); }
.main-nav ul a.active .idx { color: var(--ember); }
.nav-cta { min-height: 42px; padding: 0 18px; font-size: var(--t-small); }
.nav-note { display: none; }
.menu-toggle { display: none; }

/* ---------- Hero: drawing sheet ---------- */
.hero { padding: 20px var(--pad-x) clamp(48px, 6vw, 88px); }
.sheet {
  position: relative;
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(rgba(var(--ink-rgb), .07) 1px, transparent 1px) 0 0 / 100% 80px,
    var(--paper);
  padding: 28px 0 0 28px;
}
.ruler { display: grid; font-family: var(--mono); font-size: 11px; color: var(--slate); pointer-events: none; }
.ruler-top {
  position: absolute; left: 28px; right: 0; top: 0; height: 28px;
  grid-template-columns: repeat(6, 1fr);
  border-bottom: 1px solid var(--line-strong);
  background: repeating-linear-gradient(to right, var(--line-strong) 0 1px, transparent 1px 16px) bottom / 100% 6px no-repeat;
}
.ruler-side {
  position: absolute; left: 0; top: 28px; bottom: 0; width: 28px;
  grid-template-rows: repeat(3, 1fr);
  border-right: 1px solid var(--line-strong);
  background: repeating-linear-gradient(to bottom, var(--line-strong) 0 1px, transparent 1px 16px) right / 6px 100% no-repeat;
}
.ruler span { padding: 6px 8px; border-left: 1px solid var(--line); line-height: 1; }
.ruler-side span { border-left: 0; border-top: 1px solid var(--line); padding: 8px 0 0 9px; }
.ruler span:first-child { border: 0; }

.hero-grid {
  display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  gap: clamp(24px, 4vw, 64px); align-items: center;
  padding: clamp(40px, 5.5vw, 84px) clamp(24px, 4vw, 64px) clamp(28px, 3vw, 44px);
}
.hero-copy { position: relative; z-index: 1; }
.hero h1 {
  margin: 28px 0 28px;
  font-size: var(--t-hero); font-weight: 600; line-height: .98; letter-spacing: -.045em;
}
.hero-lead { max-width: 33em; font-size: var(--t-lead); line-height: 1.5; color: var(--slate); }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 28px; margin-top: 40px; }

/* K construction drawing */
.k-drawing { position: relative; width: 100%; max-width: 560px; justify-self: end; aspect-ratio: 620 / 640; margin-bottom: 28px; }
.k-svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.k-grid path { fill: none; stroke: var(--ink); stroke-opacity: .08; stroke-width: 1; }
.k-dims path, .k-leaders path { fill: none; stroke: var(--ink); stroke-opacity: .55; stroke-width: 1.2; }
.k-dims .k-arc { stroke: var(--ember); stroke-opacity: 1; stroke-width: 1.5; }
.k-part { stroke: var(--ink); stroke-width: 1.5; stroke-linejoin: miter; transition: opacity 240ms var(--ease), fill 240ms var(--ease); }
.k-stem { fill: var(--ink); }
.k-arm { fill: var(--ember); stroke: var(--ember); }
.k-leg { fill: var(--ink); }
.k-drawing.focus .k-part { opacity: .14; }
.k-drawing.focus .k-part.on { opacity: 1; }
.k-angle { position: absolute; transform: translate(-50%, -50%); font-family: var(--mono); font-size: 12px; color: var(--ember-dark); }
.k-angle-arm { left: 35.6%; top: 29.8%; }
.k-angle-leg { left: 35.3%; top: 65.3%; }
.k-label {
  position: absolute; display: grid; gap: 2px;
  font-family: var(--mono); font-size: 12px; line-height: 1.3; text-decoration: none; color: var(--ink);
  padding: 4px 0;
}
.k-label b { font-weight: 500; color: var(--slate); }
.k-label:hover, .k-label:focus-visible { color: var(--ember-dark); }
.k-label-stem { left: 16.1%; top: 93.6%; }
.k-label-leg { left: 70.9%; top: 93.6%; }
.k-label-arm { left: 68.5%; top: 5.3%; transform: translateY(-100%); padding-left: 0; }

/* title block */
.title-block {
  display: grid; grid-template-columns: 1fr 1fr 1.6fr 1fr;
  border-top: 1px solid var(--line-strong); background: var(--paper);
}
.title-block > div { padding: 16px 20px 18px; border-left: 1px solid var(--line-strong); min-width: 0; }
.title-block > div:first-child { border-left: 0; }
.title-block dt { font-family: var(--mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--slate); margin-bottom: 6px; }
.title-block dd { font-size: var(--t-small); font-weight: 500; }
.tb-cta { background: var(--ink); color: var(--paper); }
.tb-cta dt { color: var(--dim-on-dark); }
.tb-cta a { text-decoration: none; }
.tb-cta a:hover { color: var(--ember-light); }
.tb-cta :focus-visible { outline-color: var(--paper); }

/* hero motion: outlines draw in, then fills */
.motion .k-part { fill-opacity: 0; stroke-dasharray: 1; stroke-dashoffset: 1; animation: k-draw 1.1s var(--ease) forwards, k-fill .6s var(--ease) forwards; }
.motion .k-stem { animation-delay: .15s, 1s; }
.motion .k-arm { animation-delay: .45s, 1.25s; }
.motion .k-leg { animation-delay: .75s, 1.5s; }
.motion .k-dims, .motion .k-leaders, .motion .k-angle, .motion .k-label { opacity: 0; animation: k-fade .6s var(--ease) 1.6s forwards; }
@keyframes k-draw { to { stroke-dashoffset: 0; } }
@keyframes k-fill { to { fill-opacity: 1; } }
@keyframes k-fade { to { opacity: 1; } }

/* ---------- Sections ---------- */
.section { padding: var(--section-py) 0; }
.section-head { max-width: 860px; margin-bottom: clamp(40px, 5vw, 72px); }
.section-head h2, .company h2, .contact h2 { margin-top: 20px; font-size: var(--t-h2); font-weight: 600; line-height: 1.04; letter-spacing: -.035em; }
.section-lead { margin-top: 22px; max-width: 40em; font-size: var(--t-lead); line-height: 1.55; color: var(--slate); }
.section-head-split { max-width: none; display: grid; grid-template-columns: 1.1fr .9fr; gap: 32px 64px; align-items: end; }
.section-head-split .section-lead { margin-top: 0; }

/* ---------- Expertise: bento ---------- */
.expertise { border-top: 1px solid var(--line); }
.bento { display: grid; grid-template-columns: 1.15fr 1fr; grid-template-rows: auto auto; gap: 16px; }
.tile { position: relative; display: flex; flex-direction: column; padding: clamp(24px, 2.8vw, 40px); border-radius: var(--radius); border: 1px solid var(--line-strong); }
.tile-main { grid-row: span 2; }
.tile-dark { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.tile-paper { background: var(--stone); border-color: var(--stone); --slate: #52564F; }
.tile-white { background: var(--white); }
.tile-top { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 28px; }
.tile-num { font-family: var(--mono); font-size: var(--t-label); letter-spacing: .08em; text-transform: uppercase; color: var(--slate); }
.tile-dark .tile-num { color: var(--dim-on-dark); }
.mini-k { width: 30px; height: 36px; }
.mini-k polygon { fill: none; stroke: currentColor; stroke-opacity: .5; stroke-width: 1.4; vector-effect: non-scaling-stroke; }
.mini-k polygon.on { fill: var(--ember); stroke: var(--ember); stroke-opacity: 1; }
.stack { position: relative; display: grid; gap: 10px; margin: 4px 0 auto; padding: 0 0 56px 30px; }
.stack::before { content: ""; position: absolute; left: 0; top: 0; bottom: 56px; width: 14px; background: var(--ember); }
.stack span { display: flex; justify-content: space-between; gap: 16px; padding: 16px 18px; border: 1px solid var(--line-dark); background: var(--ink-2); font-family: var(--mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; }
.stack span:nth-child(1) { width: 100%; }
.stack span:nth-child(2) { width: 90%; }
.stack span:nth-child(3) { width: 80%; }
.stack span:nth-child(4) { width: 70%; border-color: rgba(var(--paper-rgb), .34); }
.stack b { font-weight: 500; color: var(--paper); }
.stack i { font-style: normal; color: var(--dim-on-dark); }
.tile h3 { font-size: var(--t-h3); font-weight: 600; line-height: 1.15; letter-spacing: -.02em; }
.tile-main h3 { font-size: clamp(30px, 3.2vw, 44px); line-height: 1.05; letter-spacing: -.03em; }
.tile-slogan { margin-top: 10px; font-size: 18px; font-weight: 500; line-height: 1.4; color: var(--ember-dark); }
.tile-dark .tile-slogan { color: var(--ember-light); }
.tile > p:not(.tile-slogan) { margin-top: 18px; color: var(--slate); max-width: 38em; }
.tile-dark > p:not(.tile-slogan) { color: var(--dim-on-dark); }
.tile-body { display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: start; }
.tile-art { width: clamp(84px, 9vw, 128px); height: auto; margin-top: -8px; }
.tile-art-tall { width: clamp(64px, 6.6vw, 96px); }
.caps { margin-top: 26px; display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; border-top: 1px solid var(--line-strong); }
.tile-dark .caps { border-top-color: var(--line-dark); }
.caps li { position: relative; padding: 12px 0 12px 22px; border-bottom: 1px solid var(--line); font-size: var(--t-small); line-height: 1.4; }
.tile-dark .caps li { border-bottom-color: var(--line-dark); }
.caps li::before { content: ""; position: absolute; left: 0; top: 18px; width: 10px; height: 2px; background: var(--ember); }
.tile-dark .caps li::before { background: var(--ember-light); }
.tile-main .caps { grid-template-columns: 1fr; }

/* ---------- Approach: truss ---------- */
.approach {
  background:
    linear-gradient(90deg, rgba(var(--ink-rgb), .07) 1px, transparent 1px) 0 0 / 80px 80px,
    linear-gradient(rgba(var(--ink-rgb), .07) 1px, transparent 1px) 0 0 / 80px 80px,
    var(--paper);
  border-top: 1px solid var(--line);
}
.truss { position: relative; }
.truss-roof { display: block; width: 100%; height: clamp(110px, 13vw, 170px); overflow: visible; }
.truss-diag { fill: none; stroke: var(--ember); stroke-width: 3; }
.truss-post { fill: none; stroke: var(--ink); stroke-width: 1.5; }
.motion .truss .truss-roof { clip-path: inset(0 100% 0 0); }
.motion .truss.in .truss-roof { clip-path: inset(0 0 0 0); transition: clip-path 1.2s var(--ease) .25s; }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); }
.step { position: relative; padding: 0 clamp(16px, 2vw, 32px) 8px; border-left: 1.5px solid var(--ink); }
.step-num { display: inline-block; padding: 6px 8px; margin: 0 0 22px -1px; background: var(--ink); color: var(--paper); font-family: var(--mono); font-size: var(--t-label); line-height: 1; transform: translateX(-50%); }
.step:first-child .step-num { transform: none; margin-left: -1.5px; }
.step h3 { font-size: var(--t-h3); font-weight: 600; letter-spacing: -.02em; line-height: 1.2; }
.step p { margin-top: 12px; font-size: var(--t-small); color: var(--slate); }
.step .step-out { margin-top: 20px; padding-top: 12px; border-top: 1px dashed var(--line-strong); font-family: var(--mono); font-size: 12.5px; line-height: 1.45; color: var(--ink); }

/* ---------- Engagements: graphite band ---------- */
.engagements { background: var(--ink); color: var(--paper); position: relative; overflow: hidden; }
.engagements::before {
  content: ""; position: absolute; right: -4%; top: 0; bottom: 0; width: 46%;
  background: linear-gradient(to top right, transparent calc(50% - 1px), var(--line-dark) calc(50% - 1px), var(--line-dark) calc(50% + 1px), transparent calc(50% + 1px));
  pointer-events: none;
}
.engagements .wrap { position: relative; }
.cases { border-top: 1px solid var(--line-dark); }
.case {
  position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr) 180px; gap: 16px 48px; align-items: baseline;
  padding: clamp(24px, 2.6vw, 36px) 0; border-bottom: 1px solid var(--line-dark);
}
.case::before { content: ""; position: absolute; left: 0; top: -1px; height: 1px; width: 0; background: var(--ember-light); transition: width 400ms var(--ease); }
.case:hover::before { width: 100%; }
.case h3 { font-size: var(--t-h3); font-weight: 500; letter-spacing: -.02em; line-height: 1.2; }
.case p { color: var(--dim-on-dark); font-size: var(--t-small); }
.case-tags { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px; }
.case-tags span { padding: 4px 8px; border: 1px solid var(--line-dark); border-radius: 2px; font-family: var(--mono); font-size: 11.5px; letter-spacing: .04em; text-transform: uppercase; color: var(--dim-on-dark); }
.band-cta { display: flex; align-items: center; justify-content: space-between; gap: 24px 40px; margin-top: clamp(40px, 5vw, 64px); }
.band-cta p { max-width: 36em; color: var(--dim-on-dark); }

/* ---------- Company ---------- */
.company-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(40px, 7vw, 120px); align-items: start; }
.company-copy h2 { max-width: 12em; }
.company-copy > p:not(.label) { margin-top: 22px; max-width: 36em; color: var(--slate); }
.company-copy > p:nth-of-type(2) { font-size: var(--t-lead); color: var(--ink); }
.facts { margin-top: 40px; display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line-strong); }
.facts > div { padding: 14px 0 16px; border-bottom: 1px solid var(--line); }
.facts > div:nth-child(odd) { padding-right: 20px; }
.facts dt { font-family: var(--mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--slate); margin-bottom: 4px; }
.facts dd { font-weight: 500; }
.facts a { text-decoration-thickness: 1px; text-underline-offset: 4px; }
.facts a:hover { color: var(--ember-dark); }
.principles { display: grid; gap: 0; padding-top: 8px; }
.principle { position: relative; display: grid; grid-template-columns: 56px 1fr; gap: 4px 0; padding: 28px 0; border-bottom: 1px solid var(--line-strong); }
.principle:first-child { border-top: 1px solid var(--line-strong); }
.principle-mark { grid-row: span 2; width: 28px; height: 34px; margin-top: 2px; background: var(--ink); clip-path: polygon(0 0, 22% 0, 22% 100%, 0 100%); }
.principle:nth-child(2) .principle-mark { clip-path: polygon(22% 40%, 66% 0, 96% 0, 45% 46%, 22% 53%); background: var(--ember); }
.principle:nth-child(3) .principle-mark { clip-path: polygon(45% 46%, 100% 100%, 70% 100%, 22% 53%); }
.principle h3 { font-size: var(--t-h4); font-weight: 600; letter-spacing: -.01em; }
.principle p { color: var(--slate); font-size: var(--t-small); }

/* ---------- Contact ---------- */
.contact { background: var(--stone); --slate: #52564F; }
.request { --slate: #62665F; }
.contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(40px, 6vw, 96px); align-items: start; }
.contact-info h2 { max-width: 10em; }
.contact-lines { margin-top: 40px; border-top: 1px solid var(--line-strong); }
.contact-lines li { display: grid; grid-template-columns: 96px 1fr; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line-strong); }
.cl-key { font-family: var(--mono); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--slate); padding-top: 3px; }
.cl-val { font-size: 18px; font-weight: 500; line-height: 1.45; }
a.cl-val { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 5px; }
a.cl-val:hover { color: var(--ember-dark); }

.request { background: var(--paper); border: 1px solid var(--ink); border-radius: var(--radius); }
.request-head { display: flex; justify-content: space-between; padding: 12px 20px; border-bottom: 1px solid var(--ink); font-family: var(--mono); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
.request-head span:last-child { color: var(--ember-dark); }
.contact-form { padding: clamp(22px, 3vw, 40px); display: grid; gap: 22px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.field { display: grid; gap: 8px; min-width: 0; }
.field > label, .chips legend { font-size: 14px; font-weight: 600; }
.optional { font-weight: 400; color: var(--slate); }
.field input, .field textarea {
  width: 100%; min-height: var(--control-h); padding: 12px 14px;
  border: 1px solid var(--slate); border-radius: var(--radius); background: var(--white);
  font-size: 16px; line-height: 1.45;
  transition: border-color var(--dur), box-shadow var(--dur);
}
.field textarea { resize: vertical; min-height: 140px; }
.field input::placeholder, .field textarea::placeholder { color: #6B6F67; }
.field input:hover, .field textarea:hover { border-color: var(--ink); }
.field input:focus-visible, .field textarea:focus-visible { outline: 0; border-color: var(--ink); box-shadow: 0 0 0 3px rgba(195, 68, 39, .35); }
.field [aria-invalid="true"] { border-color: var(--ember); border-width: 2px; }
.chips { border: 0; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips legend { padding: 0; margin-bottom: 10px; }
.chip { position: relative; cursor: pointer; }
.chip input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.chip span { display: inline-flex; align-items: center; gap: 8px; min-height: 40px; padding: 0 14px; border: 1px solid var(--slate); border-radius: var(--radius); background: var(--white); font-size: 14px; font-weight: 500; transition: background var(--dur), color var(--dur), border-color var(--dur); }
.chip span::before { content: ""; width: 10px; height: 10px; border: 1.5px solid currentColor; transition: background var(--dur); }
.chip:hover span { border-color: var(--ink); }
.chip input:checked + span { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.chip input:checked + span::before { background: var(--ember-light); border-color: var(--ember-light); }
.chip input:focus-visible + span { outline: 3px solid var(--ember); outline-offset: 2px; }
.turnstile-wrap { display: grid; gap: 8px; }
.form-status { font-size: 14px; color: var(--slate); }
.form-status a, .form-msg a { color: var(--ember-dark); font-weight: 600; }
.form-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 24px; }
.form-note { flex: 1 1 220px; font-size: 13.5px; color: var(--slate); }
.form-note a { text-underline-offset: 3px; }
.form-msg { padding: 16px 18px; border-radius: var(--radius); font-size: var(--t-small); }
.form-success { border: 1px solid var(--ink); border-left: 6px solid var(--ink); background: var(--white); }
.form-success strong { display: block; margin-bottom: 4px; }
.form-error { border: 1px solid var(--ember); border-left: 6px solid var(--ember); background: var(--white); }
.form-error::before { content: "Not sent. "; font-weight: 700; }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: var(--paper); }
.ruler-foot {
  grid-template-columns: repeat(6, 1fr); height: 28px; border-bottom: 1px solid var(--line-dark); color: var(--dim-on-dark);
  background: repeating-linear-gradient(to right, var(--line-dark) 0 1px, transparent 1px 16px) bottom / 100% 6px no-repeat;
}
.ruler-foot span { border-left-color: var(--line-dark); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1.2fr 1.2fr; gap: 40px; padding-top: clamp(48px, 6vw, 80px); padding-bottom: 48px; }
.footer-brand img { width: 200px; height: auto; }
.footer-brand p { margin-top: 20px; font-family: var(--mono); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--dim-on-dark); }
.footer-col { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; font-size: var(--t-small); }
.footer-col h2 { margin-bottom: 6px; font-family: var(--mono); font-size: 11px; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; color: var(--dim-on-dark); }
.footer-col a, .footer-legal a { color: var(--paper); text-decoration: none; }
.footer-col a:hover, .footer-legal a:hover { color: var(--ember-light); text-decoration: underline; text-underline-offset: 4px; }
.footer-col span { color: var(--dim-on-dark); }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 32px; padding-top: 22px; padding-bottom: 28px; border-top: 1px solid var(--line-dark); font-size: 13.5px; color: var(--dim-on-dark); }
.footer-legal { display: flex; gap: 24px; }

/* ---------- Secondary pages ---------- */
.header-simple .header-inner { justify-content: space-between; }
.page-hero { padding: clamp(56px, 8vw, 112px) var(--pad-x) clamp(40px, 5vw, 64px); border-bottom: 1px solid var(--line-strong); }
.page-hero h1 { margin: 20px 0 18px; font-size: var(--t-h2); font-weight: 600; line-height: 1.04; letter-spacing: -.035em; }
.page-hero p:not(.label) { max-width: 40em; font-size: var(--t-lead); color: var(--slate); }
.legal { padding: clamp(40px, 6vw, 80px) var(--pad-x) var(--section-py); }
.legal-body { max-width: 760px; }
.legal-body h2 { margin: 44px 0 12px; font-size: 22px; font-weight: 600; letter-spacing: -.015em; }
.legal-body h2:first-child { margin-top: 0; }
.legal-body p, .legal-body li { color: #3E423D; }
.legal-body p + p { margin-top: 12px; }
.legal-body ul { margin-top: 12px; display: grid; gap: 8px; }
.legal-body li { position: relative; padding-left: 22px; }
.legal-body li::before { content: ""; position: absolute; left: 0; top: 12px; width: 10px; height: 2px; background: var(--ember); }
.legal-body a { color: var(--ember-dark); text-underline-offset: 3px; }
.notfound { min-height: calc(100vh - var(--nav-h) - 200px); display: grid; align-content: center; padding: var(--section-py) var(--pad-x); }
.notfound-code { display: flex; align-items: flex-end; gap: 20px; font-family: var(--mono); font-size: 13px; color: var(--slate); }
.notfound-code svg { width: 72px; height: auto; }
.notfound h1 { margin: 28px 0 16px; font-size: var(--t-h2); font-weight: 600; line-height: 1.04; letter-spacing: -.035em; }
.notfound p { max-width: 34em; color: var(--slate); font-size: var(--t-lead); }
.notfound .btn { margin-top: 32px; justify-self: start; }
.footer-compact .footer-bottom { border-top: 0; padding-top: 28px; }

/* ---------- Reveal ---------- */
.motion .reveal, .motion .reveal-stagger > * { opacity: 0; transform: translateY(40px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.motion .reveal.in, .motion .reveal-stagger.in > * { opacity: 1; transform: none; }
.motion .reveal-stagger.in > :nth-child(2) { transition-delay: .08s; }
.motion .reveal-stagger.in > :nth-child(3) { transition-delay: .16s; }
.motion .reveal-stagger.in > :nth-child(4) { transition-delay: .24s; }

/* ---------- Tablet ---------- */
@media (max-width: 1100px) {
  :root { --nav-h: 68px; }
  .main-nav ul { gap: 18px; }
  .main-nav .idx { display: none; }
  .hero-grid { grid-template-columns: 1fr; }
  .k-drawing { justify-self: center; max-width: 480px; }
  .title-block { grid-template-columns: 1fr 1fr; }
  .title-block > div:nth-child(3) { border-left: 0; }
  .title-block > div:nth-child(n+3) { border-top: 1px solid var(--line-strong); }
  .bento { grid-template-columns: 1fr; }
  .tile-main { grid-row: auto; }
  .stack { padding-bottom: 36px; }
  .stack::before { bottom: 36px; }
  .tile-main .caps { grid-template-columns: 1fr 1fr; }
  .section-head-split { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; row-gap: 48px; }
  .step:nth-child(3) .step-num { transform: none; margin-left: -1.5px; }
  .truss-roof { display: none; }
  .step-num, .step:nth-child(3) .step-num { transform: none; margin-left: -1.5px; }
  .case { grid-template-columns: 1fr 1fr; }
  .engagements::before { display: none; }
  .case-tags { grid-column: 1 / -1; justify-content: flex-start; }
  .company-grid, .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* ---------- Mobile ---------- */
@media (max-width: 760px) {
  :root { --nav-h: 64px; --t-body: 16px; }
  .brand img { width: 196px; }
  .menu-toggle {
    position: relative; z-index: 60; display: inline-flex; align-items: center; justify-content: center;
    width: 48px; height: 48px; margin-right: -8px; border: 0; border-radius: var(--radius); background: transparent; cursor: pointer;
  }
  .menu-bars { position: relative; width: 26px; height: 12px; }
  .menu-bars i { position: absolute; left: 0; width: 100%; height: 2px; background: var(--ink); transition: transform var(--dur) var(--ease), top var(--dur) var(--ease), width var(--dur); }
  .menu-bars i:first-child { top: 0; }
  .menu-bars i:last-child { top: 10px; width: 65%; }
  .menu-toggle[aria-expanded="true"] .menu-bars i:first-child { top: 5px; transform: rotate(45deg); }
  .menu-toggle[aria-expanded="true"] .menu-bars i:last-child { top: 5px; width: 100%; transform: rotate(-45deg); }
  .main-nav {
    position: fixed; inset: var(--nav-h) 0 0 0; z-index: 55;
    flex-direction: column; align-items: stretch; justify-content: flex-start; gap: 0;
    padding: 8px var(--pad-x) 32px; background: var(--paper); border-top: 1px solid var(--line);
    overflow-y: auto; visibility: hidden; opacity: 0; transform: translateY(-8px);
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility 0s linear var(--dur);
  }
  .main-nav.open { visibility: visible; opacity: 1; transform: none; transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease); }
  .main-nav ul { flex-direction: column; gap: 0; }
  .main-nav ul a { display: flex; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line); font-size: 26px; font-weight: 600; letter-spacing: -.02em; }
  .main-nav ul a::after { display: none; }
  .main-nav .idx { display: inline; font-size: 12px; color: var(--ember); }
  .nav-cta { margin-top: 28px; min-height: var(--control-h); font-size: 16px; }
  .nav-note { display: block; margin-top: 28px; font-family: var(--mono); font-size: 13px; line-height: 1.7; color: var(--slate); }

  .hero { padding: 12px 12px 48px; }
  .sheet { padding: 24px 0 0 0; }
  .ruler-top { left: 0; height: 24px; grid-template-columns: repeat(4, 1fr); }
  .ruler-top span:nth-child(n+5) { display: none; }
  .ruler-side { display: none; }
  .hero-grid { padding: 36px 18px 20px; gap: 32px; }
  .hero h1 { margin: 22px 0 20px; }
  .hero-actions { margin-top: 30px; gap: 12px 20px; }
  .hero-actions .btn-solid { width: 100%; }
  .k-drawing { max-width: 340px; margin: 16px auto 34px; }
  .k-label, .k-angle { font-size: 11px; }
  .title-block { grid-template-columns: 1fr; }
  .title-block > div { border-left: 0; border-top: 1px solid var(--line-strong); padding: 12px 18px 14px; }
  .title-block > div:first-child { border-top: 0; }

  .tile-main .caps, .caps { grid-template-columns: 1fr; }
  .stack { padding-left: 24px; }
  .stack span { padding: 14px; font-size: 11px; }
  .stack span:nth-child(2) { width: 95%; }
  .stack span:nth-child(3) { width: 90%; }
  .stack span:nth-child(4) { width: 85%; }
  .tile-body { grid-template-columns: 1fr 72px; }
  .tile-art { width: 72px; }
  .tile-art-tall { width: 56px; }
  .steps { grid-template-columns: 1fr; row-gap: 40px; }
  .case { grid-template-columns: 1fr; gap: 10px; }
  .band-cta { flex-direction: column; align-items: stretch; }
  .band-cta .btn { width: 100%; }
  .facts { grid-template-columns: 1fr; }
  .facts > div:nth-child(odd) { padding-right: 0; }
  .principle { grid-template-columns: 44px 1fr; }
  .field-row { grid-template-columns: 1fr; }
  .contact-lines li { grid-template-columns: 1fr; gap: 4px; }
  .form-submit { width: 100%; }
  .request-head { padding: 10px 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; }
  .ruler-foot { grid-template-columns: repeat(4, 1fr); }
  .ruler-foot span:nth-child(n+5) { display: none; }
  .header-simple .btn { min-height: 42px; padding: 0 14px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal, .reveal-stagger > * { opacity: 1 !important; transform: none !important; }
  .k-part { fill-opacity: 1 !important; stroke-dashoffset: 0 !important; }
  .btn:hover, .btn:active { transform: none; }
}