/* mufa.tech · "Sinyal" identity
   ink #0B0C0F · graphite #17191E · slate #2A2D35 · steel #8B909A · fog #DCDDE0
   bone #F3F1EC · paper #FFFFFF · signal #FF4F1A · signal-soft #FFE3D8 · cobalt #3D5BFF */

:root {
  --ink: #0B0C0F;
  --graphite: #17191E;
  --slate: #2A2D35;
  --steel: #8B909A;
  --fog: #DCDDE0;
  --bone: #F3F1EC;
  --paper: #FFFFFF;
  --signal: #FF4F1A;
  --signal-soft: #FFE3D8;
  --cobalt: #3D5BFF;

  --font-sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "Geist Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --font-serif: "Instrument Serif", "Times New Roman", serif;

  --radius: 4px;
  --gutter: clamp(16px, 4vw, 56px);
  --col-gap: clamp(16px, 2vw, 24px);
  --max: 1320px;
  --header-h: 64px;
  --section-y: clamp(80px, 10vw, 152px);
  --ease: cubic-bezier(.2, .7, .2, 1);
}

/* Section tones: every surface defines its own text/line/focus colours */
.tone-dark  { --bg: var(--ink);   --fg: var(--bone); --fg-2: var(--steel); --line: var(--graphite); --line-2: var(--slate); --focus: var(--signal); }
.tone-paper { --bg: var(--paper); --fg: var(--ink);  --fg-2: var(--slate); --line: var(--fog);      --line-2: var(--steel); --focus: var(--ink); }
.tone-bone  { --bg: var(--bone);  --fg: var(--ink);  --fg-2: var(--slate); --line: var(--fog);      --line-2: var(--steel); --focus: var(--ink); }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 8px); }
body {
  margin: 0;
  background: var(--ink);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.55;
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3, h4, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
address { font-style: normal; }
button, input, textarea { font: inherit; color: inherit; }
main:focus { outline: none; }

.tone-dark, .tone-paper, .tone-bone { background: var(--bg); color: var(--fg); }

:focus-visible { outline: 2px solid var(--focus, var(--ink)); outline-offset: 3px; border-radius: 2px; }

.wrap { width: 100%; max-width: calc(var(--max) + 2 * var(--gutter)); margin-inline: auto; padding-inline: var(--gutter); }

.skip {
  position: absolute; left: 16px; top: -100px; z-index: 100;
  background: var(--bone); color: var(--ink); padding: 12px 16px; border-radius: var(--radius);
  font-weight: 500; text-decoration: none;
}
.skip:focus { top: 12px; outline: 2px solid var(--signal); }

/* ---------- Type ---------- */
.label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.steel { color: var(--fg-2); }
.signal { color: var(--signal); }

.display {
  font-weight: 600;
  font-size: clamp(3.4rem, 1.2rem + 7.2vw, 8.25rem);
  line-height: 0.92;
  letter-spacing: -0.04em;
}
.h2 {
  font-weight: 600;
  font-size: clamp(2.25rem, 1.3rem + 3.2vw, 4.25rem);
  line-height: 0.95;
  letter-spacing: -0.035em;
  text-wrap: balance;
}
.serif {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.015em;
  font-size: 1.08em;
  line-height: 0.85;
}
.lead { font-size: clamp(1.0625rem, 1rem + 0.3vw, 1.1875rem); line-height: 1.5; color: var(--fg-2); max-width: 52ch; text-wrap: pretty; }
.inline-link { color: var(--fg); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; text-decoration-color: var(--line-2); }
.inline-link:hover { text-decoration-color: currentColor; }

/* square markers */
.sq { display: inline-block; width: 8px; height: 8px; border-radius: 1px; flex: none; }
.sq-signal { background: var(--signal); }
.sq-steel { background: var(--steel); }
.sq-g { background: var(--graphite); box-shadow: inset 0 0 0 1px var(--slate); }
.sq-s { background: var(--slate); }
.sq-d { background: var(--signal); }

.ico { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; flex: none; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px; padding: 0 20px;
  border: 1px solid transparent; border-radius: var(--radius);
  font-family: var(--font-sans); font-size: 0.9375rem; font-weight: 500; letter-spacing: -0.005em;
  text-decoration: none; cursor: pointer; white-space: nowrap;
  transition: background-color .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}
.btn .ico { width: 18px; height: 18px; transition: transform .25s var(--ease); }
.btn:hover .ico { transform: translateX(3px); }
.btn-sm { min-height: 38px; padding: 0 14px; font-size: 0.875rem; }
.btn-invert { background: var(--fg); color: var(--bg); }
.btn-invert:hover { background: var(--paper); color: var(--ink); }
.tone-paper .btn-invert:hover, .tone-bone .btn-invert:hover { background: var(--slate); color: var(--paper); }
.btn-ghost { border-color: var(--line-2); color: var(--fg); background: transparent; }
.btn-ghost:hover { border-color: var(--fg); }
.btn-signal { background: var(--signal); color: var(--ink); }
.btn-signal:hover { background: var(--ink); color: var(--bone); }
.btn[disabled] { opacity: .6; cursor: progress; }

/* ---------- Lockup ---------- */
.lockup {
  display: inline-flex; align-items: baseline; gap: 0.35em;
  font-size: 22px; font-weight: 600; letter-spacing: -0.035em; line-height: 1;
  color: var(--fg); text-decoration: none;
}
.lockup-mark { width: calc(0.83em * 103 / 70); height: 0.83em; color: var(--fg); }
.lockup-word { display: inline-block; white-space: nowrap; }
.lockup-dot { display: inline-block; width: 0.2em; height: 0.2em; margin: 0 0.07em 0 0.08em; background: var(--signal); }
.lockup-tld { font-weight: 400; color: var(--steel); }
.lockup-lg { font-size: 34px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  height: var(--header-h);
  background: var(--bg); color: var(--fg);
  border-bottom: 1px solid var(--line);
  transition: background-color .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease);
}
.site-header[data-theme="dark"]  { --bg: var(--ink);   --fg: var(--bone); --fg-2: var(--steel); --line: var(--graphite); --line-2: var(--slate); --focus: var(--signal); }
.site-header[data-theme="light"] { --bg: var(--paper); --fg: var(--ink);  --fg-2: var(--slate); --line: var(--fog);      --line-2: var(--steel); --focus: var(--ink); }
.site-header[data-theme="light"] .lockup-tld { color: var(--slate); }
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.nav { display: flex; align-items: center; gap: 28px; }
.nav-list { display: flex; gap: 4px; }
.nav-list a {
  display: block; padding: 8px 12px; border-radius: var(--radius);
  font-size: 0.9375rem; font-weight: 500; color: var(--fg-2); text-decoration: none;
  transition: color .2s var(--ease);
}
.nav-list a:hover, .nav-list a[aria-current="true"] { color: var(--fg); }
.nav-list a[aria-current="true"] { box-shadow: inset 0 -1px 0 var(--fg); border-radius: 0; }
.nav-toggle {
  display: none; align-items: center; gap: 10px;
  min-height: 44px; padding: 0 4px 0 12px; margin-right: -4px;
  background: none; border: 0; color: var(--fg); cursor: pointer;
  font-family: var(--font-mono); font-size: 0.75rem; font-weight: 500; letter-spacing: .08em; text-transform: uppercase;
}

/* ---------- Hero ---------- */
.hero { padding-top: clamp(48px, 7vw, 112px); }
.hero-grid {
  display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--col-gap);
  row-gap: clamp(40px, 5vw, 64px); align-items: center;
}
.hero-copy { grid-column: 1 / span 7; }
.hero .display { margin-left: -0.05em; }
.hero-sub { margin-top: clamp(28px, 3.2vw, 44px); font-size: clamp(1.25rem, 1.05rem + .7vw, 1.625rem); font-weight: 500; letter-spacing: -0.02em; line-height: 1.25; color: var(--bone); }
.hero-text { margin-top: 12px; max-width: 44ch; color: var(--steel); font-size: 1.0625rem; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.hero-products { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 6px 14px; color: var(--steel); }
.hero-products a { color: var(--fog); text-decoration: none; border-bottom: 1px solid var(--slate); padding-bottom: 2px; transition: border-color .2s var(--ease), color .2s; }
.hero-products a:hover { color: var(--bone); border-color: var(--bone); }

/* Deploy grid */
.dg {
  grid-column: 8 / span 5;
  border: 1px solid var(--graphite); border-radius: var(--radius);
  padding: clamp(16px, 2vw, 24px);
  background: var(--ink);
}
.dg-head { display: flex; justify-content: space-between; gap: 12px; color: var(--fog); margin-bottom: 20px; }
.dg-svg { width: 100%; height: auto; }
.dg-svg rect { fill: var(--graphite); transition: fill .9s var(--ease); }
.dg-svg rect.s { fill: var(--slate); }
.dg-svg rect.l { fill: #4A4E57; } /* steel @ 45% over ink */
.dg-svg rect.d { fill: var(--signal); animation: dg-pulse 2.4s ease-in-out infinite; transition: none; }
.dg-svg rect.done { fill: var(--slate); }
@keyframes dg-pulse { 0%, 100% { opacity: 1; } 50% { opacity: .35; } }
.dg-axis { display: flex; align-items: center; gap: 10px; margin-top: 16px; color: var(--steel); font-size: 0.6875rem; }
.dg-axis i { flex: 1; height: 1px; background: var(--slate); position: relative; }
.dg-axis i::before, .dg-axis i::after { content: ""; position: absolute; top: -3px; width: 7px; height: 7px; background: var(--ink); border: 1px solid var(--steel); }
.dg-axis i::before { left: 0; } .dg-axis i::after { right: 0; }
.dg-legend { display: flex; gap: 20px; margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--graphite); color: var(--steel); font-size: 0.6875rem; }
.dg-legend span { display: inline-flex; align-items: center; gap: 8px; }

.spec {
  grid-column: 1 / -1;
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--graphite);
}
.spec > div { padding: 20px 0 0; border-right: 1px solid var(--graphite); padding-left: 20px; }
.spec > div:first-child { padding-left: 0; }
.spec > div:last-child { border-right: 0; }
.spec dt { color: var(--steel); }
.spec dd { margin-top: 6px; font-size: clamp(1.125rem, 1rem + .5vw, 1.5rem); font-weight: 500; letter-spacing: -0.02em; color: var(--bone); }

/* Clients */
.clients {
  display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--col-gap);
  align-items: center;
  margin-top: clamp(56px, 6vw, 88px);
  padding-block: clamp(36px, 4vw, 52px);
  position: relative;
}
.clients::before { content: ""; position: absolute; top: 0; left: var(--gutter); right: var(--gutter); height: 1px; background: var(--graphite); }
.clients-title { grid-column: 1 / span 2; color: var(--steel); font-size: 0.6875rem; max-width: 18ch; }
.clients-list {
  grid-column: 3 / -1;
  display: flex; align-items: center; justify-content: space-between; gap: 24px 32px;
}
.clients-list li { --scale: 1; display: flex; align-items: center; }
.clients-list img {
  height: calc(var(--h) * var(--scale) * 1px); width: auto;
  filter: invert(1); opacity: .62;
  transition: opacity .25s var(--ease);
}
.clients-list li:hover img { opacity: .95; }

/* ---------- Sections ---------- */
.section { padding-block: var(--section-y); }
.sec-head {
  display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--col-gap);
  row-gap: 24px; margin-bottom: clamp(48px, 6vw, 88px);
}
.eyebrow { grid-column: 1 / span 3; align-self: start; display: flex; align-items: center; gap: 10px; color: var(--fg); padding-top: .55em; }
.sec-head-main { grid-column: 4 / -1; display: grid; gap: 24px; }
.sec-head-main .lead { max-width: 56ch; }

/* Services */
.pillars { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); column-gap: var(--col-gap); }
.pillar { border-top: 1px solid var(--ink); }
.pillar-head { padding: 20px 0 32px; display: grid; gap: 10px; }
.pillar-num { color: var(--slate); }
.pillar-name { font-size: clamp(2.5rem, 1.8rem + 2.4vw, 4rem); font-weight: 600; letter-spacing: -0.045em; line-height: .92; }
.pillar-desc { color: var(--slate); max-width: 30ch; }
.svc-list { border-top: 1px solid var(--fog); }
.svc { display: grid; grid-template-columns: 24px 1fr; gap: 16px; padding: 24px 0; border-bottom: 1px solid var(--fog); }
.svc .ico { color: var(--slate); margin-top: 1px; }
.svc h4 { font-size: 1.0625rem; font-weight: 500; letter-spacing: -0.015em; line-height: 1.3; }
.svc p { margin-top: 6px; color: var(--slate); font-size: 0.9375rem; line-height: 1.5; max-width: 40ch; }

/* Process pipeline */
.pipeline { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); column-gap: var(--col-gap); position: relative; }
.pipeline::before { /* the signal line */
  content: ""; position: absolute; left: 0; right: 0; top: 5px; height: 1px; background: var(--slate);
}
.step { position: relative; padding-top: 36px; padding-right: 8px; }
.step .node { position: absolute; top: 0; left: 0; width: 11px; height: 11px; background: var(--ink); border: 1px solid var(--steel); }
.step-num { color: var(--steel); }
.step h3 { margin-top: 14px; font-size: clamp(1.375rem, 1.1rem + .9vw, 1.875rem); font-weight: 600; letter-spacing: -0.03em; line-height: 1.05; }
.step p { margin-top: 12px; color: var(--steel); font-size: 0.9375rem; max-width: 28ch; }
.step.is-signal .node { background: var(--signal); border-color: var(--signal); }
.step.is-signal .step-num { color: var(--signal); }
.step.is-signal::after { /* signal segment on the line */
  content: ""; position: absolute; top: 5px; left: 11px; right: calc(-1 * var(--col-gap)); height: 1px; background: var(--fog);
}
.pipeline::before { right: calc((100% - 4 * var(--col-gap)) / 5 - 6px); }
.loop { /* feedback line: İşletim -> Keşif */
  position: relative; height: 1px; margin-top: 56px;
  margin-left: 5px; margin-right: calc((100% - 4 * var(--col-gap)) / 5 - 6px);
  background: var(--slate); color: var(--steel); font-size: 0.6875rem;
}
.loop::before { content: ""; position: absolute; left: -1px; top: -4px; width: 8px; height: 8px; border-left: 1px solid var(--steel); border-bottom: 1px solid var(--steel); transform: rotate(45deg); transform-origin: center; }
.loop::after { content: ""; position: absolute; right: -5px; top: -5px; width: 11px; height: 11px; background: var(--ink); border: 1px solid var(--steel); }
.loop span { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); background: var(--ink); padding: 0 14px; white-space: nowrap; }

/* Values */
.values { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); column-gap: var(--col-gap); }
.value { border-top: 1px solid var(--ink); padding-top: 20px; }
.value-num { color: var(--slate); }
.value-word { margin-top: clamp(28px, 4vw, 56px); font-size: clamp(3rem, 1.6rem + 4.6vw, 6.5rem); font-weight: 600; letter-spacing: -0.045em; line-height: .9; }
.value p { margin-top: 20px; font-size: 1.0625rem; color: var(--slate); max-width: 30ch; }

/* Products */
.products { display: grid; gap: var(--col-gap); }
.products-top { display: grid; grid-template-columns: minmax(0, 7fr) 88px minmax(0, 5fr); }
.products-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--col-gap); }
.product {
  --p-fg: var(--ink); --p-fg2: var(--slate); --p-line: var(--fog);
  display: flex; flex-direction: column; gap: 0;
  padding: clamp(24px, 2.6vw, 36px);
  background: var(--paper); color: var(--p-fg);
  border: 1px solid var(--fog); border-radius: var(--radius);
}
.tone-paper .product:not(.product-lead) { background: var(--bone); border-color: var(--bone); }
.product-lead {
  --p-fg: var(--bone); --p-fg2: var(--steel); --p-line: var(--slate);
  --bg: var(--ink); --fg: var(--bone); --focus: var(--signal); --line-2: var(--slate);
  background: var(--ink); border-color: var(--ink);
}
.product-meta { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; color: var(--p-fg2); font-size: 0.6875rem; }
.product-lead .product-meta { color: var(--fog); }
.product-lead .product-meta .steel { color: var(--steel); }
.product-name { margin-top: clamp(32px, 4vw, 56px); font-size: clamp(1.875rem, 1.4rem + 1.6vw, 2.75rem); font-weight: 600; letter-spacing: -0.04em; line-height: .95; }
.product-lead .product-name { font-size: clamp(2.5rem, 1.6rem + 3vw, 4.5rem); }
.product-value { margin-top: 14px; font-size: 1.125rem; font-weight: 500; letter-spacing: -0.015em; line-height: 1.35; }
.product-lead .product-value { font-size: clamp(1.25rem, 1.1rem + .6vw, 1.625rem); }
.facts { margin-top: 24px; border-top: 1px solid var(--p-line); }
.tone-paper .product:not(.product-lead) .facts { border-color: var(--fog); }
.facts li { display: flex; gap: 12px; align-items: baseline; padding: 12px 0; border-bottom: 1px solid var(--p-line); font-size: 0.9375rem; color: var(--p-fg); }
.tone-paper .product:not(.product-lead) .facts li { border-color: var(--fog); }
.facts li::before { content: ""; flex: none; width: 6px; height: 6px; background: var(--p-fg2); transform: translateY(-1px); }
.proof { margin-top: 20px; font-size: 0.9375rem; line-height: 1.45; color: var(--p-fg); }
.proof .label { display: block; color: var(--slate); font-size: 0.6875rem; margin-bottom: 6px; }
.product .text-link, .product .product-cta { margin-top: auto; }
.text-link {
  align-self: flex-start; display: inline-flex; align-items: center; gap: 8px;
  padding-top: 28px; font-size: 0.9375rem; font-weight: 500; text-decoration: none; color: var(--p-fg);
}
.text-link .ico { width: 16px; height: 16px; transition: transform .2s var(--ease); }
.text-link:hover { text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px; }
.text-link:hover .ico { transform: translate(2px, -2px); }
.product .text-link { margin-top: auto; }
.products-row .product .facts, .products-top .product .facts { margin-bottom: 0; }
.product-cta { align-self: flex-start; margin-top: 32px !important; }
.product-cta .ico { width: 16px; height: 16px; }

/* VM · Disk · LB · S3 signal line */
.stack {
  display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 32px; position: relative;
  font-family: var(--font-mono); font-size: 0.6875rem; letter-spacing: .08em; text-transform: uppercase; color: var(--steel);
}
.stack::before { content: ""; position: absolute; top: 4px; left: 4px; right: 25%; height: 1px; background: var(--slate); }
.stack span { position: relative; padding-top: 18px; }
.stack span::before { content: ""; position: absolute; top: 0; left: 0; width: 9px; height: 9px; background: var(--ink); border: 1px solid var(--steel); }

/* "runs on" connector between Mufa Cloud and KAM */
.runs-on { position: relative; display: flex; align-items: flex-start; justify-content: center; }
.runs-on i { position: absolute; left: 0; right: 0; top: 120px; height: 1px; background: var(--steel); }
.runs-on i::before, .runs-on i::after { content: ""; position: absolute; top: -4px; width: 9px; height: 9px; border: 1px solid var(--steel); background: var(--paper); }
.runs-on i::before { left: -5px; background: var(--steel); }
.runs-on i::after { right: -5px; }
.runs-on span {
  position: absolute; top: 132px; left: 50%; transform: translateX(-50%);
  font-family: var(--font-mono); font-size: 0.625rem; letter-spacing: .08em; text-transform: uppercase; color: var(--slate);
  text-align: center; line-height: 1.35; width: 80px;
}

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--col-gap); row-gap: 56px; align-items: start; }
.contact-copy { grid-column: 1 / span 5; display: grid; gap: 28px; }
.contact-copy .eyebrow { grid-column: auto; padding-top: 0; }
.contact-details { display: grid; gap: 0; margin-top: 12px; border-top: 1px solid var(--ink); }
.contact-details > div { display: grid; grid-template-columns: 120px 1fr; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--fog); }
.contact-details dt { display: flex; align-items: center; gap: 8px; color: var(--slate); font-size: 0.6875rem; padding-top: 3px; }
.contact-details dt .ico { width: 16px; height: 16px; }
.contact-details dd a { font-weight: 500; text-decoration: none; border-bottom: 1px solid var(--steel); }
.contact-details dd a:hover { border-color: var(--ink); }

.form-card { grid-column: 7 / -1; background: var(--paper); border: 1px solid var(--fog); border-radius: var(--radius); padding: clamp(20px, 3vw, 40px); }
.form-head { display: flex; justify-content: space-between; color: var(--ink); padding-bottom: 20px; margin-bottom: 24px; border-bottom: 1px solid var(--fog); }
.form-head .steel { color: var(--slate); }
.form { display: grid; gap: 20px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { display: grid; gap: 8px; align-content: start; }
.field label { font-size: 0.875rem; font-weight: 500; letter-spacing: -0.005em; }
.field label .opt { color: var(--slate); font-weight: 400; }
.field input, .field textarea {
  width: 100%; min-height: 48px; padding: 12px 14px;
  background: var(--paper); color: var(--ink);
  border: 1px solid #B9BBC1; border-radius: var(--radius);
  font-size: 1rem; line-height: 1.4;
  transition: border-color .15s var(--ease), box-shadow .15s var(--ease);
}
.field textarea { resize: vertical; min-height: 140px; }
.field input::placeholder, .field textarea::placeholder { color: #6B707A; }
.field input:hover, .field textarea:hover { border-color: var(--slate); }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--ink); box-shadow: 0 0 0 1px var(--ink); }
.field [aria-invalid="true"] { border-color: #B3260A; box-shadow: 0 0 0 1px #B3260A; }
.field-error { display: flex; gap: 6px; align-items: center; font-size: 0.8125rem; color: #B3260A; font-weight: 500; }
.field-error[hidden] { display: none; }
.hp { position: absolute !important; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 24px; margin-top: 4px; }
.form-note { font-size: 0.8125rem; color: var(--slate); max-width: 34ch; }

.form-status { border-radius: var(--radius); padding: 16px 18px; font-size: 0.9375rem; line-height: 1.5; outline: none; }
.form-status[hidden] { display: none; }
.form-status .status-title { display: flex; align-items: center; gap: 10px; font-weight: 600; }
.form-status .status-title .ico { width: 20px; height: 20px; }
.form-status p { margin-top: 6px; }
.form-status.is-error { background: var(--signal-soft); color: var(--ink); border: 1px solid #F5BBA6; }
.form-status.is-ok { background: var(--bone); color: var(--ink); border: 1px solid var(--fog); }
.form-status .status-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.form-status .btn { min-height: 40px; font-size: 0.875rem; padding: 0 14px; }
.form-status .btn-dark { background: var(--ink); color: var(--bone); }
.form-status .btn-dark:hover { background: var(--slate); }
.form-status .btn-line { border: 1px solid var(--ink); color: var(--ink); background: transparent; }
.form-status .btn-line:hover { background: var(--paper); }
.form-status .status-mail { margin-top: 12px; font-size: 0.875rem; color: var(--slate); }
.form-status .status-mail a { color: var(--ink); font-weight: 500; }
.form-status code { font-family: var(--font-mono); font-size: .875em; }

/* ---------- Footer ---------- */
.site-footer { padding-top: clamp(64px, 8vw, 112px); }
.footer-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--col-gap); row-gap: 40px; padding-bottom: clamp(48px, 6vw, 80px); }
.footer-brand { grid-column: 1 / span 5; display: grid; gap: 20px; align-content: start; }
.footer-tag { color: var(--fog); max-width: 36ch; }
.footer-col { grid-column: span 2; display: grid; gap: 14px; align-content: start; font-size: 0.9375rem; color: var(--fog); }
.footer-col:nth-of-type(2) { grid-column: 7 / span 2; }
.footer-col h2 { color: var(--steel); font-size: 0.6875rem; }
.footer-col ul { display: grid; gap: 8px; }
.footer-col a { text-decoration: none; color: var(--fog); }
.footer-col a:hover { color: var(--bone); text-decoration: underline; text-underline-offset: 3px; }
.footer-base { position: relative; display: flex; justify-content: space-between; gap: 16px; padding-block: 24px 32px; color: var(--fog); font-size: 0.6875rem; }
.footer-base::before { content: ""; position: absolute; top: 0; left: var(--gutter); right: var(--gutter); height: 1px; background: var(--graphite); }

/* ---------- Responsive ---------- */
@media (max-width: 1180px) {
  .nav { gap: 16px; }
  .nav-list a { padding: 8px 9px; }
  .clients { row-gap: 28px; }
  .clients-title { grid-column: 1 / -1; max-width: none; }
  .clients-list { grid-column: 1 / -1; }
}

@media (max-width: 1024px) {
  .hero-copy { grid-column: 1 / -1; }
  .dg { grid-column: 1 / span 8; }
  .spec { grid-column: 1 / -1; }
  .eyebrow { grid-column: 1 / -1; }
  .sec-head-main { grid-column: 1 / -1; }
  .pillars { grid-template-columns: 1fr; row-gap: 56px; }
  .pillar-head { grid-template-columns: 80px 1fr; column-gap: 16px; }
  .pillar-num { grid-row: span 2; padding-top: 10px; }
  .svc-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); column-gap: var(--col-gap); border-top: 0; }
  .svc { grid-template-columns: 1fr; border-top: 1px solid var(--fog); }
  .pipeline { grid-template-columns: 1fr; row-gap: 0; padding-left: 0; }
  .pipeline::before { left: 5px; right: auto; top: 6px; bottom: 6px; width: 1px; height: auto; }
  .step { padding: 0 0 40px 40px; }
  .step:last-child { padding-bottom: 0; }
  .step .node { top: 2px; }
  .step.is-signal::after { left: 5px; right: auto; top: 13px; bottom: 0; width: 1px; height: auto; }
  .step h3 { margin-top: 8px; }
  .loop { display: none; }
  .values { grid-template-columns: 1fr; row-gap: 48px; }
  .value { display: grid; grid-template-columns: 80px 1fr; column-gap: 16px; }
  .value-num { grid-row: span 2; padding-top: 6px; }
  .value-word { margin-top: 0; }
  .value p { margin-top: 12px; }
  .products-top { grid-template-columns: 1fr; }
  .runs-on { height: 72px; }
  .runs-on i { left: 50%; right: auto; top: 0; bottom: 0; width: 1px; height: auto; }
  .runs-on i::before { left: -4px; top: -5px; }
  .runs-on i::after { left: -4px; right: auto; top: auto; bottom: -5px; }
  .runs-on span { top: 50%; left: calc(50% + 16px); transform: translateY(-50%); width: auto; text-align: left; }
  .products-row { grid-template-columns: 1fr 1fr; }
  .contact-copy { grid-column: 1 / -1; max-width: 640px; }
  .form-card { grid-column: 1 / -1; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-col, .footer-col:nth-of-type(2) { grid-column: span 4; }
}

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    position: absolute; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    padding: 8px var(--gutter) 24px;
    background: var(--bg); border-bottom: 1px solid var(--line);
    display: none;
  }
  .site-header.is-open .nav { display: flex; }
  .nav-list { flex-direction: column; gap: 0; }
  .nav-list a { padding: 16px 0; border-bottom: 1px solid var(--line); border-radius: 0; font-size: 1.125rem; color: var(--fg); }
  .nav-list a[aria-current="true"] { box-shadow: none; }
  .nav-cta { margin-top: 20px; min-height: 48px; }
}

@media (max-width: 720px) {
  :root { --header-h: 60px; }
  .display { font-size: min(18.5vw, 5.5rem); }
  .lockup { font-size: 20px; }
  .lockup-lg { font-size: 28px; }
  .dg { grid-column: 1 / -1; }
  .spec { grid-template-columns: 1fr 1fr; }
  .spec > div { padding: 16px 0 16px 16px; border-bottom: 1px solid var(--graphite); }
  .spec > div:nth-child(odd) { padding-left: 0; }
  .spec > div:nth-child(2) { border-right: 0; }
  .spec > div:nth-child(n+3) { border-bottom: 0; }
  .clients-list { flex-wrap: wrap; justify-content: center; gap: 28px 36px; }
  .clients-list li { --scale: .78; }
  .pillar-head { grid-template-columns: 1fr; }
  .pillar-num { grid-row: auto; padding-top: 0; }
  .svc-list { grid-template-columns: 1fr; border-top: 1px solid var(--fog); }
  .svc { grid-template-columns: 24px 1fr; border-top: 0; }
  .value { grid-template-columns: 1fr; }
  .value-num { grid-row: auto; padding-top: 0; margin-bottom: 16px; }
  .products-row { grid-template-columns: 1fr; }
  .product-name { margin-top: 28px; }
  .field-row { grid-template-columns: 1fr; }
  .contact-details > div { grid-template-columns: 1fr; gap: 6px; }
  .footer-col, .footer-col:nth-of-type(2) { grid-column: 1 / -1; }
  .footer-base { flex-direction: column; gap: 6px; }
  .hero-ctas .btn { flex: 1 1 auto; }
}

@media (max-width: 400px) {
  .dg-head span:last-child { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}

@media (forced-colors: active) {
  .sq, .lockup-dot, .step .node { forced-color-adjust: none; }
  .btn { border-color: ButtonText; }
}

@media print {
  .site-header, .dg, .form-card { display: none; }
  body, .tone-dark { background: #fff; color: #000; }
}