/* ============================================================
   Semantica v3 — styles
   Palette: deep ink navy / warm paper / amber signal
   ============================================================ */

@font-face {
  font-family: 'Archivo';
  src: url('fonts/archivo-var.woff2') format('woff2-variations');
  font-weight: 100 900;
  font-stretch: 62% 125%;
  font-style: normal;
  font-display: swap;
}

:root {
  --ink-950: #060b13;
  --ink-900: #070d16;
  --ink-800: #0b1524;
  --ink-700: #101e33;
  --ink-600: #1a2c48;
  --ink-line: #22334e;
  --paper: #f6f4ef;
  --paper-2: #edeae1;
  --paper-line: #ddd8cb;
  --txt: #1d2430;
  --txt-soft: #525b6b;
  --txt-inv: #eef1f6;
  --txt-inv-soft: #9fabc0;
  --amber: #e8a33d;
  --amber-deep: #946014;
  --tension: #e2574c;
  --compression: #5b8def;
  --ok: #58b47c;
  --radius: 16px;
  --radius-sm: 10px;
  --mono: ui-monospace, 'SF Mono', 'Cascadia Mono', Menlo, Consolas, monospace;
  --pagepad: clamp(20px, 5vw, 72px);
  --shadow-lg: 0 24px 64px -24px rgba(4, 10, 20, .45);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

body {
  margin: 0;
  font-family: 'Archivo', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  color: var(--txt);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; }
h1, h2, h3, h4 { line-height: 1.05; margin: 0 0 .5em; font-weight: 680; letter-spacing: -0.022em; }
h2 { font-size: clamp(34px, 4.6vw, 60px); }
h2 em, h1 em { font-style: normal; color: var(--amber-deep); }
p { margin: 0 0 1em; }
a { color: inherit; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--amber); color: var(--ink-900); padding: 10px 18px;
  border-radius: 0 0 var(--radius-sm) 0; font-weight: 600; text-decoration: none;
}
.skip-link:focus { left: 0; }

:focus-visible { outline: 3px solid var(--amber); outline-offset: 2px; }

.section-pad { padding: clamp(72px, 10vw, 140px) var(--pagepad); }

/* ---------- kickers / section labels ---------- */
.kicker {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 13px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--txt-soft); margin-bottom: 28px;
}
.kicker .tick { width: 10px; height: 10px; background: var(--amber); display: inline-block; }
.kicker-light { color: var(--txt-inv-soft); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 26px; border-radius: 999px; border: 1.5px solid transparent;
  font: 600 16px/1 'Archivo', sans-serif; letter-spacing: .01em;
  text-decoration: none; cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-amber { background: var(--amber); color: var(--ink-900); box-shadow: 0 10px 28px -10px rgba(232, 163, 61, .55); }
.btn-amber:hover { background: #f2b254; }
.btn-ghost { background: rgba(255,255,255,.08); color: #fff; border-color: rgba(255,255,255,.4); backdrop-filter: blur(6px); }
.btn-ghost:hover { background: rgba(255,255,255,.16); }
.btn-dark { background: var(--ink-900); color: #fff; }
.btn-dark:hover { background: var(--ink-700); }
.btn-light { background: #fff; color: var(--ink-900); }
.btn-light:hover { background: var(--paper); }

/* ============================================================
   Header
   ============================================================ */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background .25s ease, box-shadow .25s ease;
}
.site-header.scrolled {
  background: rgba(7, 13, 22, .88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 rgba(255,255,255,.08);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px var(--pagepad); gap: 24px;
}
.brand { display: inline-flex; color: #fff; text-decoration: none; }
.brand-mark { height: 40px; width: auto; display: block; color: currentColor; }
.bm-top { font: 800 26px 'Archivo', sans-serif; fill: currentColor; letter-spacing: .02em; }
.bm-sub { font: italic 700 17px 'Archivo', sans-serif; fill: var(--amber); }
.primary-nav { display: flex; align-items: center; gap: clamp(14px, 2.4vw, 34px); }
.primary-nav > a:not(.nav-cta) {
  color: #e8ecf4; text-decoration: none; font-weight: 500; font-size: 15.5px;
  padding: 6px 2px; border-bottom: 2px solid transparent; transition: border-color .15s, color .15s;
}
.primary-nav > a:not(.nav-cta):hover { color: #fff; border-bottom-color: var(--amber); }
.nav-cta { padding: 11px 20px; font-size: 15px; }

.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 6px;
  width: 46px; height: 42px; padding: 0 10px;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.25);
  border-radius: var(--radius-sm); cursor: pointer;
}
.nav-toggle span { display: block; height: 2px; background: #fff; transition: transform .2s, opacity .2s; }
.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }

/* ============================================================
   Hero (Product Hero with Demo Panel)
   ============================================================ */
.hero {
  position: relative; min-height: 100svh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; color: #fff;
  padding: 140px var(--pagepad) 180px;
}
.hero-media { position: absolute; inset: 0; overflow: hidden; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero-shade {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(6,11,19,.78) 0%, rgba(6,11,19,.38) 34%, rgba(6,11,19,.44) 62%, rgba(6,11,19,.9) 100%),
    radial-gradient(110% 70% at 50% 44%, transparent 40%, rgba(6,11,19,.5) 100%);
}
.hero-content { position: relative; max-width: 880px; }
.hero-eyebrow {
  font-family: var(--mono); font-size: 13.5px; letter-spacing: .18em; text-transform: uppercase;
  color: #f3d9ae; margin-bottom: 26px;
}
.hero h1 {
  font-size: clamp(44px, 7.4vw, 96px);
  font-weight: 700; letter-spacing: -0.028em; margin-bottom: 24px;
  text-wrap: balance;
}
.hero h1 em { color: var(--amber); }
.hero-sub {
  font-size: clamp(17px, 1.6vw, 21px); line-height: 1.55; color: #d7deea;
  max-width: 620px; margin: 0 auto 36px;
}
.hero-ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* floating demo panel */
.hero-panel {
  position: absolute; left: 50%; bottom: -72px; transform: translateX(-50%);
  width: min(720px, calc(100% - 2 * var(--pagepad)));
  display: flex; gap: 22px; align-items: center;
  background: #fff; color: var(--txt);
  border-radius: var(--radius); padding: 18px 24px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--paper-line);
}
.hero-panel-fig { flex: 0 0 240px; }
.hero-panel-fig svg { width: 100%; height: auto; display: block; }
.hp-beam { stroke: var(--ink-700); stroke-width: 4; }
.hp-sup { fill: var(--ink-700); }
.hp-bmd { fill: rgba(232,163,61,.3); stroke: var(--amber-deep); stroke-width: 1.6; }
.hp-arrow { stroke: var(--tension); stroke-width: 2.4; }
.hp-arrowhead { fill: var(--tension); }
.hero-panel-copy { text-align: left; font-size: 15.5px; line-height: 1.5; }
.hero-panel-copy p { margin: 0 0 6px; }
.hero-panel-copy a { color: var(--amber-deep); font-weight: 650; text-decoration: none; }
.hero-panel-copy a:hover { text-decoration: underline; }

/* ============================================================
   Statement
   ============================================================ */
.statement { padding-top: clamp(140px, 16vw, 210px); max-width: 1180px; margin: 0 auto; }
.statement blockquote { margin: 0 0 40px; }
.statement blockquote p {
  font-size: clamp(28px, 3.9vw, 52px); font-weight: 650; letter-spacing: -0.024em;
  line-height: 1.16; margin: 0; text-wrap: balance;
}
.statement blockquote em { font-style: normal; color: var(--amber-deep); }
.statement-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; max-width: 980px; color: var(--txt-soft); font-size: 18px; }

/* ============================================================
   How we design — interactive flow
   ============================================================ */
.howwe { background: var(--paper-2); }
.howwe-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 40px; margin-bottom: 52px; flex-wrap: wrap; }
.howwe-head p { max-width: 380px; color: var(--txt-soft); margin: 0; }

/* holistic design diagram (from the director's "basic principles" slide) */
.holistic {
  display: grid; grid-template-columns: minmax(320px, 1.35fr) minmax(260px, 1fr);
  gap: clamp(24px, 4vw, 64px); align-items: center;
  background: #fff; border: 1px solid var(--paper-line); border-radius: var(--radius);
  padding: clamp(24px, 3.4vw, 48px); margin-bottom: clamp(40px, 5vw, 64px);
}
.hd-svg { width: 100%; height: auto; display: block; }
.hd-line { fill: none; stroke: var(--ink-700); stroke-width: 2.4; }
.hd-arrhead { fill: var(--ink-700); }
.hd-ellipse { fill: none; stroke: var(--tension); stroke-width: 2.2; opacity: .85; }
.hd-node { cursor: pointer; }
.hd-node rect {
  fill: rgba(232, 163, 61, .16); stroke: var(--amber-deep); stroke-width: 1.6;
  transition: fill .15s ease, stroke-width .15s ease;
}
.hd-node text {
  font: 650 17px 'Archivo', sans-serif; fill: var(--ink-800);
  text-anchor: middle; letter-spacing: .04em; pointer-events: none;
}
.hd-node:hover rect { fill: rgba(232, 163, 61, .38); }
.hd-node.active rect { fill: var(--amber); stroke-width: 2.4; }
.hd-node:focus-visible { outline: none; }
.hd-node:focus-visible rect { stroke: var(--ink-800); stroke-width: 3; }
.hd-node-safety rect { fill: #fff; stroke: var(--tension); }
.hd-node-safety text { fill: var(--tension); letter-spacing: .1em; }
.hd-node-safety:hover rect { fill: rgba(226, 87, 76, .12); }
.hd-node-safety.active rect { fill: var(--tension); }
.hd-node-safety.active text { fill: #fff; }
.holistic-copy h3 { font-size: clamp(22px, 2.4vw, 30px); }
.holistic-copy p { color: var(--txt-soft); font-size: 17px; margin: 0; min-height: 6.5em; }

.flow-title { font-size: clamp(19px, 2vw, 24px); margin-bottom: 18px; color: var(--txt); }

.flow-track {
  position: relative; display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px;
  margin-bottom: 0;
}
.flow-step {
  position: relative; z-index: 1;
  display: flex; flex-direction: column; align-items: flex-start; gap: 6px;
  padding: 16px 14px 14px; border: 1px solid var(--paper-line); border-bottom: none;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  background: transparent; cursor: pointer; text-align: left;
  font: 600 15.5px/1.2 'Archivo', sans-serif; color: var(--txt-soft);
  transition: background .18s, color .18s;
}
.flow-step i { font: 500 12px var(--mono); font-style: normal; letter-spacing: .1em; color: var(--amber-deep); }
.flow-step::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -2px; height: 3px;
  background: var(--paper-line); transition: background .18s;
}
.flow-step:hover { background: rgba(255,255,255,.65); color: var(--txt); }
.flow-step[aria-selected="true"] { background: #fff; color: var(--txt); }
.flow-step[aria-selected="true"]::after { background: var(--amber); }

.flow-panel {
  display: grid; grid-template-columns: minmax(280px, 1fr) minmax(300px, 1.1fr);
  gap: clamp(24px, 4vw, 64px); align-items: center;
  background: #fff; border: 1px solid var(--paper-line);
  border-radius: 0 0 var(--radius) var(--radius); padding: clamp(28px, 4vw, 56px);
}
.flow-copy h3 { font-size: clamp(24px, 2.6vw, 34px); }
.flow-copy p { color: var(--txt-soft); font-size: 17.5px; margin: 0; min-height: 5.5em; }
.flow-fig { min-height: 200px; }
.flow-svg { width: 100%; height: auto; }
.flow-svg[hidden] { display: none; }
.flow-svg .fs { fill: none; stroke: var(--ink-700); stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.flow-svg .fsd { stroke-dasharray: 6 7; opacity: .45; stroke-width: 1.8; }
.flow-svg .famber { stroke: var(--amber-deep); stroke-width: 2.6; stroke-linecap: round; }
.flow-svg .famberfill circle { fill: var(--amber-deep); }
.flow-svg .fdot { fill: var(--amber); }
@keyframes figin { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.flow-svg:not([hidden]) { animation: figin .4s ease; }

/* ============================================================
   Services
   ============================================================ */
.services { max-width: 1320px; margin: 0 auto; }
.services-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 40px; margin-bottom: 70px; flex-wrap: wrap; }
.services-head p { max-width: 430px; color: var(--txt-soft); margin: 0; font-size: 18px; }

.group { margin-bottom: clamp(60px, 8vw, 110px); }
.group:last-child { margin-bottom: 0; }
.group-head {
  display: grid; grid-template-columns: minmax(280px, 520px) 1fr;
  gap: clamp(24px, 4vw, 60px); align-items: center; margin-bottom: 34px;
}
.group-media {
  margin: 0; border-radius: var(--radius); overflow: hidden; aspect-ratio: 16 / 9;
  box-shadow: var(--shadow-lg);
}
.group-media img, .group-media svg { width: 100%; height: 100%; object-fit: cover; }
.group-no { font-family: var(--mono); font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: var(--amber-deep); margin-bottom: 10px; }
.group-intro h3 { font-size: clamp(26px, 3vw, 40px); }
.group-intro p:last-child { color: var(--txt-soft); margin: 0; max-width: 520px; }

.svc-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; }
.svc {
  position: relative; background: #fff; border: 1px solid var(--paper-line);
  border-radius: var(--radius); padding: 26px 24px 20px;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.svc:hover { transform: translateY(-4px); box-shadow: 0 18px 44px -18px rgba(4,10,20,.25); border-color: #cfc8b6; }
.svc-wide {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(220px, 1fr) 1.9fr;
  grid-template-areas: "no no" "head body" "head tags";
  column-gap: clamp(28px, 4vw, 64px);
  align-content: start;
  padding: 30px 34px 26px;
}
.svc-wide .svc-no { grid-area: no; margin-bottom: 4px; }
.svc-wide h4 { grid-area: head; font-size: 24px; margin: 6px 0 0; }
.svc-wide > p { grid-area: body; margin-top: 8px; }
.svc-wide .tags { grid-area: tags; align-self: start; }
.svc-no { font-family: var(--mono); font-size: 13px; color: var(--amber-deep); letter-spacing: .08em; }
.svc h4 { font-size: 20px; margin: 10px 0 10px; letter-spacing: -0.012em; }
.svc-sub { display: block; font-size: 14px; font-weight: 500; color: var(--txt-soft); margin-top: 2px; }
.svc p { font-size: 15.5px; color: var(--txt-soft); margin-bottom: 14px; }
.tags { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; }
.tags li {
  font: 500 12.5px var(--mono); color: var(--ink-700);
  background: var(--paper); border: 1px solid var(--paper-line);
  padding: 4px 10px; border-radius: 999px;
}

/* ============================================================
   Fabrication emphasis
   ============================================================ */
.fab {
  display: grid; grid-template-columns: 1fr 1.05fr; align-items: stretch;
  background: var(--ink-900); color: var(--txt-inv);
}
.fab-media { margin: 0; min-height: 420px; }
.fab-media img { width: 100%; height: 100%; object-fit: cover; }
.fab-copy { padding: clamp(48px, 6vw, 100px) var(--pagepad); max-width: 720px; }
.fab-copy h2 { color: #fff; font-size: clamp(30px, 3.6vw, 48px); }
.fab-copy h2 em { color: var(--amber); }
.fab-copy > p { color: var(--txt-inv-soft); font-size: 18px; }
.fab-list { list-style: none; margin: 26px 0 36px; padding: 0; display: grid; gap: 14px; }
.fab-list li { padding-left: 26px; position: relative; color: var(--txt-inv-soft); }
.fab-list li::before { content: ''; position: absolute; left: 0; top: .5em; width: 12px; height: 3px; background: var(--amber); }
.fab-list strong { color: #fff; font-weight: 650; }

/* ============================================================
   CTA strip + gradient banner
   ============================================================ */
.cta-strip {
  display: flex; align-items: center; justify-content: center; gap: 28px; flex-wrap: wrap;
  padding: clamp(40px, 5vw, 64px) var(--pagepad);
  background: var(--paper-2); border-top: 1px solid var(--paper-line);
}
.cta-strip p { margin: 0; font-size: clamp(19px, 2vw, 24px); font-weight: 650; letter-spacing: -0.015em; }

.cta-banner {
  text-align: center; color: #fff;
  padding: clamp(80px, 10vw, 140px) var(--pagepad);
  background:
    radial-gradient(90% 130% at 85% 110%, rgba(232,163,61,.75) 0%, rgba(199,127,27,.32) 38%, transparent 70%),
    radial-gradient(70% 110% at 10% -10%, rgba(91,141,239,.28) 0%, transparent 55%),
    linear-gradient(135deg, var(--ink-950) 0%, var(--ink-700) 60%, #38405e 100%);
}
.cta-banner h2 { font-size: clamp(38px, 5vw, 66px); color: #fff; }
.cta-banner p { color: #cfd7e6; font-size: 19px; max-width: 520px; margin: 0 auto 34px; }

/* ============================================================
   Toolbox
   ============================================================ */
.toolbox { background: var(--ink-900); color: var(--txt-inv); }
.toolbox-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 40px; margin-bottom: 64px; flex-wrap: wrap; }
.toolbox-head h2 { color: #fff; }
.toolbox-head h2 em { color: var(--amber); }
.toolbox-head p { max-width: 520px; color: var(--txt-inv-soft); margin: 0; font-size: 18px; }
.toolbox-head strong { color: #f3d9ae; }

.tool {
  background: var(--ink-800); border: 1px solid rgba(255,255,255,.09);
  border-radius: calc(var(--radius) + 6px); padding: clamp(22px, 3vw, 40px);
  margin-bottom: 36px;
}
.tool-head { max-width: 860px; margin-bottom: 26px; }
.tool-head h3 { font-size: clamp(24px, 2.6vw, 34px); color: #fff; display: flex; flex-direction: column; gap: 10px; }
.tool-tag {
  align-self: flex-start; font: 600 12px var(--mono); letter-spacing: .14em; text-transform: uppercase;
  color: var(--amber); border: 1px solid rgba(232,163,61,.5); border-radius: 999px; padding: 5px 12px;
}
.tool-head p { color: var(--txt-inv-soft); margin: 0; font-size: 17px; }

.tool-body { display: grid; grid-template-columns: minmax(320px, 1.6fr) minmax(280px, 1fr); gap: clamp(20px, 3vw, 36px); }
.tool-stage { min-width: 0; }

.form-switch { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.form-switch button {
  font: 600 14px 'Archivo', sans-serif; color: var(--txt-inv-soft);
  background: transparent; border: 1px solid rgba(255,255,255,.22);
  padding: 9px 16px; border-radius: 999px; cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}
.form-switch button:hover { color: #fff; border-color: rgba(255,255,255,.5); }
.form-switch button[aria-pressed="true"] { background: var(--amber); border-color: var(--amber); color: var(--ink-900); }

.canvas-wrap {
  position: relative; border-radius: var(--radius); overflow: hidden;
  background: linear-gradient(180deg, #0e1a2e 0%, #0a1322 100%);
  border: 1px solid rgba(255,255,255,.1);
  aspect-ratio: 16 / 9; min-height: 280px;
}
.canvas-wrap canvas { width: 100%; height: 100%; display: block; touch-action: none; }
.canvas-hint {
  position: absolute; bottom: 10px; right: 14px; margin: 0;
  font: 500 12px var(--mono); color: rgba(255,255,255,.55); pointer-events: none;
}
.webgl-fallback {
  position: absolute; inset: 0; display: grid; place-items: center; text-align: center;
  padding: 24px; background: var(--ink-700);
}
.webgl-fallback[hidden] { display: none; }
.webgl-fallback p { color: var(--txt-inv-soft); max-width: 420px; margin: 0; }
.webgl-fallback strong { color: #fff; }

.tool-sliders { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 16px 26px; margin-top: 18px; }
.tool-sliders label { display: block; font: 600 13.5px var(--mono); letter-spacing: .04em; color: var(--txt-inv-soft); }
.tool-sliders output { float: right; color: #fff; }
.tool-sliders input[type="range"] { width: 100%; margin-top: 10px; accent-color: var(--amber); }

.tool-side { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.bridge-note { margin: 0; color: var(--txt-inv-soft); font-size: 15.5px; line-height: 1.55; min-height: 4.6em; }
.legend { display: flex; gap: 16px; }
.lg { font: 500 13px var(--mono); display: inline-flex; align-items: center; gap: 7px; color: var(--txt-inv-soft); }
.lg::before { content: ''; width: 14px; height: 4px; border-radius: 2px; }
.lg-t::before { background: var(--tension); }
.lg-c::before { background: var(--compression); }

.diag { background: var(--ink-700); border: 1px solid rgba(255,255,255,.08); border-radius: var(--radius-sm); padding: 12px 14px 8px; }
.diag-title { display: flex; justify-content: space-between; gap: 10px; margin: 0 0 6px; font: 600 13px var(--mono); letter-spacing: .05em; color: var(--txt-inv-soft); }
.diag-title span { color: var(--amber); }
.diag svg { width: 100%; height: auto; display: block; }
.d-axis { stroke: rgba(255,255,255,.3); stroke-width: 1; }
.d-line { stroke: var(--amber); stroke-width: 1.8; fill: none; }
.d-fill { fill: rgba(232,163,61,.22); stroke: none; }

.caveat { margin: 4px 0 0; font-size: 13px; color: #8d99ad; }
.caveat strong { color: #f3d9ae; }

.stability { margin: 0; font: 600 15px var(--mono); color: var(--ok); }
.stability.warn { color: var(--amber); }
.stability.danger { color: var(--tension); }

.reactions { display: grid; gap: 10px; }
.rx { display: grid; grid-template-columns: 118px 1fr 64px; align-items: center; gap: 10px; }
.rx-name { font: 500 12px var(--mono); color: var(--txt-inv-soft); }
.rx-bar { height: 10px; border-radius: 5px; background: rgba(255,255,255,.1); overflow: hidden; }
.rx-bar span { display: block; height: 100%; width: 25%; background: var(--amber); border-radius: 5px; transition: width .12s linear, background .12s linear; }
.rx-val { font: 600 13px var(--mono); color: #fff; text-align: right; }
.rx.lifting .rx-bar span { background: var(--tension); }
.rx.lifting .rx-val { color: var(--tension); }

/* beam calculator */
.tool-body-beam { grid-template-columns: minmax(260px, 340px) 1fr; }
.beam-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; align-content: start; }
.beam-form label { font: 600 13px var(--mono); letter-spacing: .03em; color: var(--txt-inv-soft); }
.beam-form .unit { color: #7e8ba1; font-weight: 500; }
.beam-form input {
  width: 100%; margin-top: 7px; padding: 10px 12px;
  background: var(--ink-700); color: #fff; border: 1px solid rgba(255,255,255,.16);
  border-radius: var(--radius-sm); font: 600 16px var(--mono);
}
.beam-form input:focus-visible { outline: 2px solid var(--amber); outline-offset: 0; border-color: var(--amber); }
.beam-error { grid-column: 1 / -1; margin: 0; color: var(--tension); font-size: 14px; }
.beam-out { display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.diag-beam svg .b-beam { stroke: #d7deea; stroke-width: 3; }
.beam-max { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin: 2px 0 0; }
.beam-max div { background: var(--ink-700); border: 1px solid rgba(255,255,255,.08); border-radius: var(--radius-sm); padding: 10px 14px; }
.beam-max dt { font: 500 12px var(--mono); color: var(--txt-inv-soft); letter-spacing: .05em; }
.beam-max dd { margin: 4px 0 0; font: 650 16px var(--mono); color: var(--amber); }
.beam-max dd small { display: block; color: var(--txt-inv-soft); font-weight: 500; font-size: 11.5px; margin-top: 2px; }

/* roadmap */
.roadmap { margin-top: 56px; }
.roadmap h3 { color: #fff; font-size: clamp(22px, 2.2vw, 28px); margin-bottom: 22px; }
.roadmap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.rm-card {
  position: relative; border: 1px dashed rgba(255,255,255,.22); border-radius: var(--radius);
  padding: 20px 20px 16px; background: rgba(255,255,255,.03);
}
.rm-card h4 { font-size: 16.5px; color: #e8ecf4; margin-bottom: 6px; }
.rm-card p { font-size: 14px; color: var(--txt-inv-soft); margin-bottom: 14px; }
.soon { font: 600 11px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--amber); border: 1px solid rgba(232,163,61,.45); padding: 4px 10px; border-radius: 999px; }

/* ============================================================
   Contact
   ============================================================ */
.contact { display: grid; grid-template-columns: minmax(300px, 1fr) minmax(320px, 1.1fr); gap: clamp(36px, 6vw, 100px); max-width: 1320px; margin: 0 auto; }
.contact-copy h2 { margin-bottom: 18px; }
.contact-copy > p { color: var(--txt-soft); font-size: 18px; max-width: 460px; }
.contact-email-line { margin-top: 30px; }
.contact-email { font: 650 clamp(18px, 2vw, 24px) var(--mono); color: var(--amber-deep); text-decoration: none; word-break: break-all; }
.contact-email:hover { text-decoration: underline; }
.contact-loc { font-family: var(--mono); font-size: 13.5px; color: var(--txt-soft); margin-top: 26px; }

.enquiry { background: #fff; border: 1px solid var(--paper-line); border-radius: calc(var(--radius) + 6px); padding: clamp(24px, 3.4vw, 44px); box-shadow: var(--shadow-lg); }
.enquiry .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.enquiry label { display: block; font-weight: 600; font-size: 14.5px; margin-bottom: 16px; }
.enquiry .req { color: var(--amber-deep); }
.enquiry .opt { color: var(--txt-soft); font-weight: 500; }
.enquiry input, .enquiry select, .enquiry textarea {
  display: block; width: 100%; margin-top: 7px; padding: 12px 14px;
  border: 1.5px solid var(--paper-line); border-radius: var(--radius-sm);
  background: var(--paper); font: 500 16px 'Archivo', sans-serif; color: var(--txt);
}
.enquiry textarea { resize: vertical; }
.enquiry input:focus-visible, .enquiry select:focus-visible, .enquiry textarea:focus-visible { outline: 2px solid var(--amber); border-color: var(--amber); }
.privacy { font-size: 13px; color: var(--txt-soft); margin: 4px 0 18px; }
.form-status { margin: 12px 0 0; font-weight: 600; font-size: 14.5px; color: var(--amber-deep); min-height: 1.4em; }

/* ============================================================
   Footer
   ============================================================ */
.site-footer { background: var(--ink-950); color: var(--txt-inv-soft); padding: clamp(56px, 7vw, 90px) var(--pagepad) 36px; }
.footer-main { display: flex; justify-content: space-between; gap: 48px; flex-wrap: wrap; margin-bottom: 56px; }
.footer-brand p { margin: 16px 0 0; font-size: 15px; }
.footer-nav { display: flex; gap: clamp(32px, 6vw, 90px); flex-wrap: wrap; }
.footer-nav h4 { color: #fff; font-size: 14px; letter-spacing: .06em; text-transform: uppercase; margin-bottom: 14px; }
.footer-nav a { display: block; color: var(--txt-inv-soft); text-decoration: none; font-size: 15px; padding: 4px 0; }
.footer-nav a:hover { color: #fff; }
.footer-legal { border-top: 1px solid rgba(255,255,255,.1); padding-top: 24px; font-size: 13px; }
.footer-legal p { margin: 0 0 6px; }

/* ============================================================
   Reveal on scroll
   ============================================================ */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1060px) {
  .tool-body, .tool-body-beam { grid-template-columns: 1fr; }
  .roadmap-grid { grid-template-columns: repeat(2, 1fr); }
  .fab { grid-template-columns: 1fr; }
  .fab-media { min-height: 300px; max-height: 44vh; overflow: hidden; }
}

@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .site-header { background: rgba(7, 13, 22, .88); backdrop-filter: blur(14px); }
  .primary-nav {
    position: fixed; top: 70px; right: var(--pagepad); z-index: 99;
    flex-direction: column; align-items: stretch; gap: 4px;
    background: var(--ink-800); border: 1px solid rgba(255,255,255,.14);
    border-radius: var(--radius); padding: 14px; min-width: 240px;
    box-shadow: var(--shadow-lg);
    display: none;
  }
  .primary-nav.open { display: flex; }
  .primary-nav > a:not(.nav-cta) { padding: 12px 10px; border-bottom: none; border-radius: var(--radius-sm); }
  .primary-nav > a:not(.nav-cta):hover { background: rgba(255,255,255,.08); }
  .nav-cta { justify-content: center; margin-top: 8px; }

  .hero { padding-bottom: 240px; }
  .hero-panel { flex-direction: column; text-align: center; bottom: -120px; gap: 10px; }
  .hero-panel-fig { flex-basis: auto; width: min(300px, 100%); }
  .hero-panel-copy { text-align: center; }
  .statement { padding-top: 200px; }
  .statement-cols { grid-template-columns: 1fr; gap: 12px; }

  .holistic { grid-template-columns: 1fr; }
  .holistic-copy p { min-height: 0; }
  .flow-track { grid-template-columns: repeat(3, 1fr); }
  .flow-step { border-bottom: 1px solid var(--paper-line); border-radius: var(--radius-sm); }
  .flow-step::after { bottom: 0; border-radius: 0 0 var(--radius-sm) var(--radius-sm); }
  .flow-panel { grid-template-columns: 1fr; border-radius: var(--radius); margin-top: 10px; }
  .flow-copy p { min-height: 0; }

  .group-head { grid-template-columns: 1fr; }
  .svc-wide { display: block; padding: 26px 24px 20px; }
  .svc-wide h4 { font-size: 20px; margin: 10px 0; }
  .svc-wide > p { margin-top: 0; }
  .rx { grid-template-columns: 96px 1fr 64px; }
  .beam-form { grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); }
  .enquiry .form-row { grid-template-columns: 1fr; gap: 0; }
  .contact { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .flow-track { grid-template-columns: repeat(2, 1fr); }
  .roadmap-grid { grid-template-columns: 1fr; }
  .hero-ctas .btn { width: 100%; justify-content: center; }
  .canvas-wrap { aspect-ratio: 4 / 3; min-height: 0; }
}

/* Review: touch targets, readable feedback and visible diagram focus. */
.tool-sliders input[type="range"] { min-height: 44px; }
.hd-node:focus-visible :is(rect,circle) { stroke: #946014; stroke-width: 4; }
.rx { grid-template-columns: 96px 1fr 86px; }
.caveat, .beam-form .unit { color: #aab6ca; }
.canvas-hint { color: #aab6ca; }

.brand-mark.official-logo { width: 132px; height: auto; }
.site-footer .brand-mark.official-logo { width: 150px; }