/* ==========================================================================
   Yelko — site.css
   Plain CSS. Design tokens first, then base, layout, components.
   ========================================================================== */

/* ---------- 0. Fonts (self-hosted, Geist — SIL OFL 1.1) ---------- */
@font-face {
  font-family: "Geist";
  src: url("../fonts/geist-latin-wght.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Geist Mono";
  src: url("../fonts/geist-mono-latin-wght.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Satoshi";
  src: url("../fonts/satoshi-variable.woff2") format("woff2");
  font-weight: 300 900;
  font-style: normal;
  font-display: swap;
}

/* ---------- 1. Tokens ---------- */
:root {
  /* Brand — sampled from the Yelko ‹› mark */
  --brand-cyan: #04a8d9;
  --brand-teal: #04d3bf;
  --brand-lime: #8ac641;
  --brand-gradient: linear-gradient(90deg, var(--brand-cyan) 0%, var(--brand-teal) 50%, var(--brand-lime) 100%);

  /* Ink (dark surfaces) — warm-neutral, not navy */
  --ink-950: #0b0d10;   /* base charcoal */
  --ink-900: #111418;   /* surface */
  --ink-850: #15191e;
  --ink-800: #1b2026;   /* raised */
  --ink-700: #262c33;
  --ink-line: rgba(232, 236, 240, 0.075);
  --ink-line-strong: rgba(232, 236, 240, 0.13);
  --on-ink: #efede7;
  --on-ink-soft: #c9ccd0;
  --on-ink-muted: #9da3aa;
  --on-ink-faint: #80868e;

  /* Paper (light surfaces) */
  --paper: #f3f1eb;
  --paper-2: #e9e6dd;
  --paper-3: #dcd8cd;
  --paper-line: rgba(20, 23, 28, 0.11);
  --on-paper: #121519;
  --on-paper-muted: #545a62;
  --on-paper-faint: #6f747b;

  /* Accent for text/links on light — darker teal for AA contrast */
  --accent-ink: #027a6e;
  --accent: var(--brand-teal);

  /* Type */
  --font-display: "Satoshi", "Geist", ui-sans-serif, system-ui, sans-serif;
  --font-sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --step--1: clamp(0.875rem, 0.85rem + 0.1vw, 0.9375rem);   /* 14–15 */
  --step-0: clamp(1rem, 0.96rem + 0.2vw, 1.125rem);          /* 16–18 */
  --step-1: clamp(1.125rem, 1.05rem + 0.35vw, 1.375rem);     /* 18–22 */
  --step-2: clamp(1.375rem, 1.2rem + 0.7vw, 1.75rem);        /* 22–28 */
  --step-3: clamp(1.875rem, 1.45rem + 1.7vw, 3.25rem);       /* 30–52 */
  --step-4: clamp(2.25rem, 1.6rem + 2.6vw, 3.875rem);        /* 36–62 */
  --step-5: clamp(2.75rem, 1.6rem + 4.6vw, 6rem);            /* 44–96 */
  --step-6: clamp(3rem, 1.2rem + 6.6vw, 6.75rem);            /* 48–108 */
  --label: 0.75rem;

  /* Space */
  --space-2xs: 0.375rem;
  --space-xs: 0.625rem;
  --space-s: 1rem;
  --space-m: 1.5rem;
  --space-l: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: clamp(4.5rem, 3rem + 6vw, 8rem);
  --space-3xl: clamp(5rem, 3.5rem + 6vw, 9rem);

  --gutter: clamp(1.25rem, 0.6rem + 3vw, 3rem);
  --max: 1360px;
  --measure: 62ch;

  --radius-s: 6px;
  --radius-m: 10px;
  --radius-l: 16px;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --header-h: 76px;
}

/* ---------- 2. Base ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--on-paper);
  background: var(--ink-950);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

[hidden] { display: none !important; }
img, svg { display: block; max-width: 100%; }
figure { margin: 0; }
img { height: auto; }

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.04;
  letter-spacing: -0.032em;
  text-wrap: balance;
  font-kerning: normal;
}
h3, h4 { font-weight: 600; letter-spacing: -0.022em; line-height: 1.15; }

p { margin: 0; text-wrap: pretty; }

a { color: inherit; text-decoration: none; }

:focus-visible {
  outline: 2px solid var(--brand-teal);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -100px;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--on-paper);
  color: var(--paper);
  border-radius: var(--radius-s);
}
.skip-link:focus { top: 1rem; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------- 3. Layout ---------- */
.container {
  width: 100%;
  max-width: calc(var(--max) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.theme-ink {
  background: var(--ink-950);
  color: var(--on-ink);
}

/* ---------- 4. Type helpers ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--on-paper-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
}
.theme-ink .eyebrow { color: var(--on-ink-muted); }

.eyebrow .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--brand-teal);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand-teal) 22%, transparent);
}

.mono { font-family: var(--font-mono); }

.lede {
  font-size: var(--step-1);
  line-height: 1.55;
  color: var(--on-paper-muted);
  max-width: 52ch;
}
.theme-ink .lede { color: var(--on-ink-muted); }

.gradient-text {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- 5. Header ---------- */
.site-header {
  position: relative;
  z-index: 20;
  height: var(--header-h);
}
.site-header .container {
  height: 100%;
  display: flex;
  align-items: center;
  gap: var(--space-l);
}
.site-header .logo { display: flex; align-items: center; margin-top: -2px; }
.site-header .logo img { height: 34px; width: auto; }

.nav { margin-left: auto; }
.nav ul { display: flex; gap: 0.125rem; list-style: none; margin: 0; padding: 0; }
.nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 40px;
  padding-inline: 0.85rem;
  font-size: 0.9375rem;
  font-weight: 450;
  letter-spacing: -0.005em;
  color: var(--on-paper-muted);
  transition: color 0.2s;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0.85rem; right: 0.85rem; bottom: 6px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease-out);
}
.nav a:hover { color: var(--on-paper); }
.nav a:hover::after, .nav a[aria-current="page"]::after { transform: scaleX(1); }
.theme-ink .nav a { color: var(--on-ink-soft); }
.theme-ink .nav a:hover { color: #fff; }

.menu-toggle {
  display: none;
  margin-left: auto;
  width: 46px; height: 46px;
  align-items: center; justify-content: center;
  border: 1px solid var(--paper-line);
  background: transparent;
  color: inherit;
  border-radius: 999px;
  cursor: pointer;
}
.theme-ink .menu-toggle { border-color: var(--ink-line-strong); }

@media (max-width: 960px) {
  .nav, .site-header .btn { display: none; }
  .menu-toggle { display: inline-flex; }
  .site-header .logo img { height: 30px; }
}

/* ---------- 6. Buttons ---------- */
.btn {
  --btn-bg: var(--on-paper);
  --btn-fg: var(--paper);
  --btn-line: transparent;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 48px;
  padding: 0 1.35rem;
  font: 500 0.9688rem/1 var(--font-sans);
  letter-spacing: -0.01em;
  color: var(--btn-fg);
  background: var(--btn-bg);
  border: 1px solid var(--btn-line);
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.3s var(--ease-out), background-color 0.25s, border-color 0.25s, color 0.25s, box-shadow 0.3s;
}
.btn::before { /* light sweep */
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(105deg, transparent 30%, rgba(255, 255, 255, 0.28) 50%, transparent 70%);
  transform: translateX(-110%);
  transition: transform 0.7s var(--ease-out);
}
.btn:hover::before { transform: translateX(110%); }
.btn:active { transform: translateY(1px) scale(0.99); }
.btn .arrow { display: inline-block; transition: transform 0.35s var(--ease-out); }
.btn:hover .arrow { transform: translateX(3px); }

.theme-ink .btn { --btn-bg: var(--on-ink); --btn-fg: var(--ink-950); }
.btn--primary { box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5), 0 1px 2px rgba(0, 0, 0, 0.2); }
.theme-ink .btn--primary:hover { box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5), 0 0 0 4px color-mix(in srgb, var(--brand-teal) 18%, transparent), 0 8px 30px -8px color-mix(in srgb, var(--brand-teal) 55%, transparent); }

.btn--ghost { --btn-bg: transparent; --btn-fg: var(--on-paper); --btn-line: var(--paper-line); }
.btn--ghost:hover { --btn-line: var(--on-paper-faint); }
.theme-ink .btn--ghost { --btn-bg: transparent; --btn-fg: var(--on-ink); --btn-line: var(--ink-line-strong); }
.theme-ink .btn--ghost:hover { --btn-line: var(--on-ink-faint); }

/* Quiet: text button with animated underline */
.btn--quiet { --btn-bg: transparent; --btn-fg: var(--on-paper); padding-inline: 0.4rem; border-radius: 4px; overflow: visible; }
.theme-ink .btn--quiet { --btn-bg: transparent; --btn-fg: var(--on-ink); }
.btn--quiet::before { display: none; }
.btn--quiet::after {
  content: ""; position: absolute; left: 0.4rem; right: 0.4rem; bottom: 12px; height: 1px;
  background: currentColor; opacity: 0.35; transition: opacity 0.25s;
}
.btn--quiet:hover::after { opacity: 1; }

.btn--sm { min-height: 40px; padding: 0 1.05rem; font-size: 0.9063rem; }

/* Text link with arrow */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 500;
  color: var(--on-paper);
  border-bottom: 1px solid var(--paper-line);
  padding-bottom: 3px;
  transition: border-color 0.2s, gap 0.3s var(--ease-out);
}
.link-arrow:hover { border-color: currentColor; gap: 0.65rem; }
.theme-ink .link-arrow { color: var(--on-ink); border-color: var(--ink-line-strong); }

/* Section index: "02 — Our products" on a full-width hairline */
.index-rule {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--paper-line);
  font: 500 var(--label)/1 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--on-paper-muted);
}
.index-rule span:first-child { color: var(--accent-ink); }
.theme-ink .index-rule { border-color: var(--ink-line); color: var(--on-ink-muted); }
.theme-ink .index-rule span:first-child { color: var(--brand-teal); }

.display-2 { font-size: var(--step-4); letter-spacing: -0.04em; line-height: 1.02; }

/* ==========================================================================
   9. Site header — sticky production variant + mobile menu
   ========================================================================== */
.site-header.is-sticky {
  position: sticky;
  top: 0;
  background: color-mix(in srgb, var(--ink-950) 82%, transparent);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
.site-header.is-sticky.is-scrolled { border-bottom-color: var(--ink-line); }
.nav a[aria-current="page"] { color: var(--on-ink); }

.mobile-menu {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  z-index: 19;
  display: flex;
  flex-direction: column;
  padding: var(--space-l) var(--gutter) calc(var(--space-l) + env(safe-area-inset-bottom));
  background: var(--ink-950);
  color: var(--on-ink);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out), visibility 0s linear 0.3s;
  overflow-y: auto;
}
.mobile-menu.is-open {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}
.mobile-menu ul { list-style: none; margin: 0; padding: 0; }
.mobile-menu li { border-bottom: 1px solid var(--ink-line); }
.mobile-menu li a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.05rem 0;
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: -0.03em;
}
.mobile-menu li a::after { content: "→"; font-family: var(--font-mono); font-size: 1rem; color: var(--on-ink-faint); }
.mobile-menu .btn { margin-top: var(--space-l); width: 100%; }
.mobile-menu__foot { margin-top: auto; padding-top: var(--space-l); font: 500 0.8125rem/1.6 var(--font-mono); color: var(--on-ink-faint); }
.menu-toggle .i-close { display: none; }
.menu-toggle[aria-expanded="true"] .i-open { display: none; }
.menu-toggle[aria-expanded="true"] .i-close { display: block; }
body.menu-open { overflow: hidden; }
@media (min-width: 961px) { .mobile-menu { display: none; } }

/* ==========================================================================
   10. Surfaces
   ========================================================================== */
.theme-paper { background: var(--paper); color: var(--on-paper); }
.theme-paper2 { background: var(--paper-2); color: var(--on-paper); }

/* ==========================================================================
   11. Hero — "Complex operations. Connected software."
   ========================================================================== */
.hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  min-height: calc(100svh - var(--header-h));
  padding-block: clamp(2.75rem, 7vh, 5.5rem) clamp(3rem, 7vh, 5.5rem);
  background:
    radial-gradient(60% 55% at 74% 70%, color-mix(in srgb, var(--brand-teal) 11%, transparent), transparent 70%),
    radial-gradient(45% 40% at 8% 0%, color-mix(in srgb, var(--brand-cyan) 6%, transparent), transparent 70%),
    var(--ink-950);
}
.hero::after { /* soft floor so the hero settles into the next section */
  content: "";
  position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--ink-line-strong) 20%, var(--ink-line-strong) 80%, transparent);
}
.hero__grid { /* visible 12-column blueprint */
  position: absolute;
  z-index: -1;
  top: 0; bottom: 0;
  left: 50%;
  width: min(var(--max), calc(100% - var(--gutter) * 2));
  transform: translateX(-50%);
  background-image: linear-gradient(to right, var(--ink-line) 1px, transparent 1px);
  background-size: calc(100% / 12) 100%;
  border-right: 1px solid var(--ink-line);
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 18%, #000 70%, transparent);
  mask-image: linear-gradient(to bottom, transparent, #000 18%, #000 70%, transparent);
  opacity: 0.7;
  pointer-events: none;
}
.hero__kicker {
  display: inline-flex; align-items: center; gap: 0.65rem;
  font: 500 var(--label)/1 var(--font-mono);
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--on-ink-muted);
}
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--brand-teal); box-shadow: 0 0 0 4px color-mix(in srgb, var(--brand-teal) 18%, transparent), 0 0 14px var(--brand-teal); }
.hero__title {
  margin-top: clamp(1.25rem, 3vh, 2rem);
  font-size: var(--step-6);
  font-weight: 500;
  font-variation-settings: normal;
  font-weight: 540;
  line-height: 0.94;
  letter-spacing: -0.052em;
  color: var(--on-ink);
}
.hero__title .line { display: block; padding-bottom: 0.04em; }
.hero__title .dim { color: #6c7279; }

.hero__body {
  margin-top: clamp(2.5rem, 6vh, 4.5rem);
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--space-l);
  align-items: start;
}
.hero__copy { grid-column: 1 / span 4; padding-top: 0.5rem; }
.hero__visual { grid-column: 5 / -1; margin-right: -0.5rem; }
.hero__lede { font-size: var(--step-0); line-height: 1.62; color: var(--on-ink-soft); max-width: 38ch; }
.hero .cta-row { margin-top: 2rem; }
.cta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1rem; }

.hero__products { margin-top: 2.75rem; padding-top: 1.25rem; border-top: 1px solid var(--ink-line); }
.hero__products .label { font: 500 var(--label)/1 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--on-ink-muted); }
.hero__products ul { list-style: none; margin: 1rem 0 0; padding: 0; display: grid; gap: 0.25rem; }
.hero__products a {
  display: flex; align-items: center; gap: 0.85rem;
  margin-inline: -0.6rem; padding: 0.6rem;
  border-radius: 10px;
  transition: background-color 0.25s;
}
.hero__products a:hover { background: rgba(255, 255, 255, 0.04); }
.hero__products img { width: 34px; height: 34px; padding: 5px; background: #fff; border-radius: 8px; flex: none; }
.hero__products span { font-size: 0.9375rem; line-height: 1.35; color: var(--on-ink-muted); }
.hero__products b { display: block; font-weight: 500; color: var(--on-ink); }

.pmark { width: 36px; height: 36px; border-radius: 9px; display: grid; place-items: center; background: #fff; flex: none; }
.pmark img { width: 24px; height: 24px; object-fit: contain; }

/* Diagram */
.diagram { width: 100%; height: auto; overflow: visible; }
.diagram--mobile { display: none; }
.diagram .d-cap { font: 500 10.5px var(--font-mono); letter-spacing: 0.12em; fill: var(--on-ink-faint); }
.diagram .src { font: 400 13px var(--font-mono); fill: var(--on-ink-muted); transition: fill 0.3s; }
.diagram .row { font: 450 14.5px var(--font-sans); fill: var(--on-ink); letter-spacing: -0.01em; }
.diagram .wire-base { fill: none; stroke: rgba(232, 236, 240, 0.12); stroke-width: 1; stroke-dasharray: 2 5; }
.diagram .wire-flow, .diagram .wire-out { fill: none; stroke-width: 1.4; stroke-linecap: round; stroke-dasharray: 1; stroke-dashoffset: 0; transition: stroke-width 0.3s, opacity 0.3s; }
.diagram .node { fill: var(--ink-950); stroke: var(--on-ink-muted); stroke-width: 1.2; transition: fill 0.3s, stroke 0.3s; }
.diagram .core { fill: var(--ink-850); stroke-width: 1.5; }
.diagram .orbit { fill: none; stroke: var(--ink-line-strong); stroke-dasharray: 2 7; transform-box: fill-box; transform-origin: center; }
.diagram .chev { fill: none; stroke-width: 5.5; stroke-linecap: round; stroke-linejoin: round; }
.diagram .plane { fill: var(--ink-950); stroke: var(--ink-line-strong); }
.diagram .plane--3 { opacity: 0.55; }
.diagram .panel { fill: var(--ink-900); stroke: var(--ink-line-strong); }
.diagram .rule { stroke: var(--ink-line-strong); }
.diagram .rule--soft { stroke: var(--ink-line); }
.diagram .dotc { fill: rgba(232, 236, 240, 0.16); }
.diagram .live { fill: var(--brand-teal); }
.diagram .sig { fill: #7ff3e6; filter: drop-shadow(0 0 4px var(--brand-teal)); }
.diagram .sig--out { fill: #c4ef8f; filter: drop-shadow(0 0 4px var(--brand-lime)); }
.diagram .hit { fill: transparent; stroke: transparent; stroke-width: 22; pointer-events: all; }
.diagram .route { cursor: default; transition: opacity 0.35s; }
.diagram--desktop:has(.route:hover) .route:not(:hover) { opacity: 0.3; }
.diagram .route:hover .wire-flow { stroke-width: 2.2; }
.diagram .route:hover .src { fill: var(--on-ink); }
.diagram .route:hover .node { fill: var(--brand-teal); stroke: var(--brand-teal); }

/* Entrance + ambient motion (JS adds .js; reduced motion neutralises below) */
.js .hero__title .line { overflow: hidden; }
.js .hero__title .line > span { display: inline-block; animation: rise 1.15s var(--ease-out) both; }
.js .hero__title .line:nth-child(2) > span { animation-delay: 0.12s; }
.js .hero__kicker { animation: fade 0.9s var(--ease-out) both; }
.js .hero__visual, .js .hero__products { animation: fade-up 1.1s var(--ease-out) 0.3s both; }
.js .diagram .wire-flow, .js .diagram .wire-out { animation: draw 1.6s var(--ease-out) both; animation-delay: calc(0.6s + var(--i, 0) * 0.09s); }
.js .diagram .wire-out { animation-delay: calc(1.3s + var(--i, 0) * 0.08s); }
.diagram .orbit { animation: spin 40s linear infinite; }
.diagram .live { animation: pulse 2.4s ease-in-out infinite; animation-delay: calc(var(--i, 0) * 0.35s); }
@keyframes rise { from { transform: translateY(105%); } }
@keyframes fade { from { opacity: 0; } }
@keyframes fade-up { from { opacity: 0; transform: translateY(18px); } }
@keyframes draw { from { stroke-dashoffset: 1; } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 50% { opacity: 0.35; } }

@media (max-width: 1100px) {
  .hero { min-height: 0; }
  .hero__body { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); row-gap: var(--space-xl); }
  .hero__copy { grid-column: 1 / -1; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); column-gap: var(--space-l); }
  .hero__copy .hero__products { grid-column: 2; grid-row: 1 / span 2; margin-top: 0; }
  .hero__visual { grid-column: 1 / -1; margin: 0; }
}
@media (max-width: 860px) {
  .hero { min-height: 0; }
  .hero__body { grid-template-columns: 1fr; row-gap: var(--space-xl); }
  .hero__copy, .hero__visual { grid-column: 1; }
  .hero__copy { display: block; }
  .hero__copy .hero__products { margin-top: 2.75rem; }
  .hero__visual { margin: 0; }
  .diagram--desktop { display: none; }
  .diagram--mobile { display: block; max-width: 440px; margin-inline: auto; }
  .hero__grid { background-size: calc(100% / 4) 100%; }
}
@media (max-width: 560px) {
  .hero__title { font-size: clamp(2.6rem, 12.4vw, 3.6rem); letter-spacing: -0.05em; }
}

/* ==========================================================================
   13a. Products header + Finye showcase (full-bleed, product-tinted)
   ========================================================================== */
.products-head { padding-block: var(--space-2xl) var(--space-xl); }
.products-head__grid {
  margin-top: var(--space-l);
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: var(--space-m) var(--space-xl);
  align-items: end;
}
.products-head__grid h2 { max-width: 13ch; }
.products-head__grid p { color: var(--on-paper-muted); font-size: var(--step-0); max-width: 40ch; padding-bottom: 0.4rem; }

.finye {
  --mint: #e4efe7;
  --mint-2: #d3e6d9;
  --finye: #0f7a5c;
  --finye-ink: #0b231a;
  --finye-muted: #44594f;
  --finye-line: rgba(11, 35, 26, 0.13);
  position: relative;
  overflow: hidden;
  isolation: isolate;
  color: var(--finye-ink);
  padding-top: var(--space-2xl);
  background:
    radial-gradient(70% 60% at 85% 0%, rgba(255, 255, 255, 0.65), transparent 70%),
    linear-gradient(180deg, var(--mint) 0%, var(--mint-2) 100%);
}
.finye::before { /* faint column rules echo the hero blueprint */
  content: "";
  position: absolute; z-index: -1;
  top: 0; bottom: 0; left: 50%;
  width: min(var(--max), calc(100% - var(--gutter) * 2));
  transform: translateX(-50%);
  background-image: linear-gradient(to right, var(--finye-line) 1px, transparent 1px);
  background-size: calc(100% / 12) 100%;
  border-right: 1px solid var(--finye-line);
  opacity: 0.45;
  -webkit-mask-image: linear-gradient(to bottom, #000, transparent 60%);
  mask-image: linear-gradient(to bottom, #000, transparent 60%);
}
.finye__head {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--space-l);
  align-items: end;
}
.finye__id { grid-column: 1 / -1; display: flex; align-items: center; gap: 1.25rem; margin-bottom: var(--space-l); }
.finye__logo { height: 40px; width: auto; }
.finye__kind {
  padding-left: 1.25rem;
  border-left: 1px solid var(--finye-line);
  font: 500 var(--label)/1.4 var(--font-mono);
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--finye-muted);
}
.finye__title {
  grid-column: 1 / span 7;
  font-size: clamp(2.4rem, 1.2rem + 3.9vw, 4.5rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.045em;
  max-width: 14ch;
}
.finye__intro { grid-column: 9 / -1; padding-bottom: 0.35rem; }
.finye__intro p { font-size: var(--step-0); line-height: 1.6; color: var(--finye-muted); }
.finye__intro dl { margin: 1.5rem 0 0; display: grid; gap: 0.5rem; font-size: 0.9375rem; }
.finye__intro dl div { display: grid; grid-template-columns: 6.5rem 1fr; gap: 1rem; padding-top: 0.5rem; border-top: 1px solid var(--finye-line); }
.finye__intro dt { font: 500 var(--label)/1.9 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--finye-muted); }
.finye__intro dd { margin: 0; }
.btn--finye { --btn-bg: var(--finye-ink); --btn-fg: #f2f7f3; margin-top: 1.75rem; }
.btn--finye:hover { --btn-bg: var(--finye); }

.finye__facts {
  list-style: none;
  margin: var(--space-xl) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--finye-line);
}
.finye__facts li { padding: 1.35rem 1.5rem 0 0; }
.finye__facts li + li { padding-left: 1.5rem; border-left: 1px solid var(--finye-line); }
.finye__facts b { display: block; font: 600 1.0625rem/1.3 var(--font-display); letter-spacing: -0.015em; }
.finye__facts span { display: block; margin-top: 0.4rem; font-size: 0.9375rem; line-height: 1.5; color: var(--finye-muted); }

.finye__stage {
  position: relative;
  margin-top: var(--space-xl);
  margin-bottom: calc(-1 * clamp(4rem, 9vw, 9rem)); /* screen runs off the section edge */
  padding-right: 6%;
}
.finye__stage figcaption {
  position: absolute; right: 0; top: -1.9rem;
  font: 400 var(--label)/1 var(--font-mono);
  color: var(--finye-muted);
}
.shot {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
  box-shadow:
    0 0 0 1px rgba(11, 35, 26, 0.1),
    0 2px 4px rgba(11, 35, 26, 0.04),
    0 40px 80px -30px rgba(11, 50, 34, 0.35),
    0 80px 140px -60px rgba(11, 50, 34, 0.3);
}
.shot img { width: 100%; }
.shot__bar { display: flex; align-items: center; gap: 6px; height: 38px; padding: 0 16px; background: #f5f8f6; border-bottom: 1px solid #e3eae5; font: 500 11.5px/1 var(--font-mono); color: #5d7067; }
.shot__bar i { width: 9px; height: 9px; border-radius: 50%; background: #d4ddd7; }
.shot__bar span { margin-left: 12px; }
.shot--float {
  position: absolute;
  right: 0;
  top: 54%;
  width: 52%;
  border-radius: 10px;
  box-shadow:
    0 0 0 1px rgba(11, 35, 26, 0.12),
    0 30px 60px -20px rgba(11, 50, 34, 0.45);
  transition: transform 0.6s var(--ease-out);
}
.finye__stage:hover .shot--float { transform: translateY(-8px); }



@media (max-width: 1100px) {
  .finye__title { grid-column: 1 / span 7; }
  .finye__intro { grid-column: 8 / -1; }
  .finye__facts { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 1.25rem; }
  .finye__facts li:nth-child(3) { padding-left: 0; border-left: 0; }
}
@media (max-width: 860px) {
  .products-head__grid { grid-template-columns: 1fr; }
  .finye__head { grid-template-columns: 1fr; row-gap: var(--space-m); }
  .finye__title, .finye__intro { grid-column: 1; }
  .finye__stage { padding-right: 0; margin-bottom: calc(-1 * clamp(2rem, 8vw, 4rem)); }
  .shot--float { position: relative; top: auto; width: 92%; margin: -2.5rem 0 0 auto; }
  .finye__stage { display: flex; flex-direction: column; }
  .finye__stage figcaption { position: static; order: -1; margin-bottom: 0.75rem; }
}
@media (max-width: 640px) {
  .shot--float { display: none; }
}
@media (max-width: 560px) {
  .finye__facts { grid-template-columns: 1fr; }
  .finye__facts li, .finye__facts li + li { padding: 1rem 0; border-left: 0; border-bottom: 1px solid var(--finye-line); }
  .finye__id { flex-wrap: wrap; gap: 0.75rem; }
  .finye__kind { padding-left: 0; border-left: 0; width: 100%; }
}

/* After the full-bleed product, the next product starts with breathing room */
.products-more { padding-top: clamp(6rem, 4rem + 8vw, 12rem); }

/* ==========================================================================
   12. Statement — editorial "what we do"
   ========================================================================== */
.statement { padding-block: var(--space-2xl); }
.statement__text {
  margin-top: var(--space-xl);
  max-width: 15.5em;
  font-size: clamp(2rem, 0.9rem + 3.7vw, 4.25rem);
  font-weight: 500;
  line-height: 1.06;
  letter-spacing: -0.042em;
  color: #86837b;
  text-wrap: pretty;
}
.statement__text .hl { color: var(--on-paper); }
.statement__foot {
  margin-top: var(--space-xl);
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--space-l);
  align-items: start;
}
.toc { grid-column: 1 / span 5; display: grid; border-top: 1px solid var(--on-paper); }
.toc a {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 1.1rem;
  padding: 1rem 2rem 1rem 0;
  border-bottom: 1px solid var(--paper-line);
  font: 500 var(--step-2)/1.2 var(--font-display);
  letter-spacing: -0.025em;
  transition: padding 0.4s var(--ease-out), color 0.25s;
}
.toc a span { font: 500 var(--label)/1 var(--font-mono); letter-spacing: 0.08em; color: var(--accent-ink); }
.toc a::after { content: "↓"; position: absolute; right: 0.25rem; top: 50%; transform: translateY(-50%); font: 400 1rem/1 var(--font-mono); color: var(--on-paper-faint); transition: transform 0.35s var(--ease-out), color 0.25s; }
.toc a:hover { padding-left: 0.5rem; }
.toc a:hover::after { color: var(--on-paper); transform: translateY(-30%); }
.statement__copy { grid-column: 7 / -1; padding-top: 0.25rem; }
.statement__copy p { font-size: var(--step-0); line-height: 1.65; color: var(--on-paper-muted); max-width: 52ch; }
.statement__copy p + p { margin-top: 1rem; }
.statement__copy .link-arrow { margin-top: 1.75rem; }
@media (max-width: 860px) {
  .statement__foot { grid-template-columns: 1fr; row-gap: var(--space-xl); }
  .toc, .statement__copy { grid-column: 1; }
}

.products-head { padding-block: 0 var(--space-xl); }

/* ==========================================================================
   13b. Start My Tradie — navy, workflow-led
   ========================================================================== */
.smt {
  --navy: #08203f;
  --blue: #0068e4;
  --orange: #f97c0a;
  --smt-text: #eef3fa;
  --smt-muted: #a9bbd3;
  --smt-line: rgba(214, 228, 248, 0.14);
  position: relative;
  overflow: hidden;
  isolation: isolate;
  color: var(--smt-text);
  padding-block: var(--space-2xl);
  background:
    radial-gradient(55% 60% at 8% 0%, rgba(0, 104, 228, 0.32), transparent 70%),
    radial-gradient(40% 50% at 100% 100%, rgba(0, 104, 228, 0.18), transparent 70%),
    linear-gradient(180deg, #08203f 0%, #061a34 100%);
}
.smt__head {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--space-l);
  align-items: start;
}
.smt__intro { grid-column: 1 / span 5; }
.smt__title {
  grid-column: 7 / -1;
  font-size: clamp(2.4rem, 1.2rem + 3.9vw, 4.5rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.045em;
  color: #fff;
}
.smt__title span { color: #7fb2f7; }
.smt__id { display: flex; align-items: center; gap: 0.9rem; }
.smt__mark { width: 46px; height: 46px; border-radius: 11px; background: #fff; display: grid; place-items: center; }
.smt__mark img { width: 30px; height: 30px; }
.smt__name { font: 600 1.375rem/1 var(--font-display); letter-spacing: -0.02em; }
.smt__kind { margin: 1.5rem 0 1rem; font: 500 var(--label)/1.4 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--smt-muted); }
.smt__intro > p:not(.smt__kind) { font-size: var(--step-0); line-height: 1.6; color: #c6d3e5; }
.smt__intro dl { margin: 1.5rem 0 0; display: grid; gap: 0.5rem; font-size: 0.9375rem; }
.smt__intro dl div { display: grid; grid-template-columns: 6.5rem 1fr; gap: 1rem; padding-top: 0.5rem; border-top: 1px solid var(--smt-line); }
.smt__intro dt { font: 500 var(--label)/1.9 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--smt-muted); }
.smt__intro dd { margin: 0; }
.btn--smt { --btn-bg: #fff; --btn-fg: var(--navy); margin-top: 1.75rem; }
.btn--smt:hover { --btn-bg: var(--blue); --btn-fg: #fff; }

.smt__flow { margin-top: var(--space-xl); }
.smt__flow figcaption {
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  padding-top: 1rem;
  border-top: 1px solid var(--smt-line);
  font: 500 var(--label)/1.4 var(--font-mono);
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--smt-muted);
}
.smt__flow figcaption .note { text-transform: none; letter-spacing: 0.02em; }
.pipeline {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1.25rem;
  position: relative;
}
.pipeline::before { /* the connecting line */
  content: "";
  position: absolute;
  left: 0; right: 0; top: 5px;
  height: 1px;
  background: linear-gradient(90deg, var(--blue), #4f9cff 60%, var(--brand-lime));
  opacity: 0.8;
}
.stage { position: relative; padding-top: 1.75rem; display: flex; flex-direction: column; }
.stage::before { /* node on the line */
  content: "";
  position: absolute; left: 0; top: 0;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--navy);
  border: 2px solid #4f9cff;
}
.stage:last-child::before { border-color: var(--orange); background: var(--orange); box-shadow: 0 0 0 4px rgba(249, 124, 10, 0.2); }
.stage__label { display: flex; align-items: baseline; gap: 0.6rem; font: 600 1rem/1.2 var(--font-display); letter-spacing: -0.01em; }
.stage__label span { font: 500 var(--label)/1 var(--font-mono); color: var(--smt-muted); }
.stage__desc { margin-top: 0.9rem; font-size: 0.9375rem; line-height: 1.5; color: var(--smt-muted); }

.card {
  margin-top: 1rem;
  flex: 1;
  min-height: 196px;
  display: flex; flex-direction: column; gap: 0.55rem;
  padding: 1rem;
  background: #fff;
  color: var(--navy);
  border-radius: 10px;
  font-size: 0.8125rem;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.6) inset, 0 24px 48px -24px rgba(0, 0, 0, 0.6);
  transition: transform 0.5s var(--ease-out), box-shadow 0.5s var(--ease-out);
}
.stage:hover .card { transform: translateY(-6px); box-shadow: 0 32px 56px -24px rgba(0, 0, 0, 0.7); }
.card i { font-style: normal; color: #6b7f99; }
.card em { font-style: normal; }
.card__title { font: 600 0.875rem/1.2 var(--font-display); }
.card__row { display: flex; justify-content: space-between; align-items: center; gap: 0.5rem; }
.card .f { display: grid; gap: 0.2rem; }
.card .f i { font: 500 0.6875rem/1 var(--font-mono); text-transform: uppercase; letter-spacing: 0.06em; }
.card .f { padding: 0.35rem 0.55rem; border: 1px solid #dbe4f0; border-radius: 6px; }
.card__btn { margin-top: auto; padding: 0.55rem; border-radius: 6px; background: var(--blue); color: #fff; text-align: center; font-weight: 600; }
.card .who { display: flex; align-items: center; gap: 0.6rem; padding-bottom: 0.5rem; border-bottom: 1px solid #e6ecf4; }
.card .av { width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; background: #e4effd; color: #0b57b8; font: 600 0.75rem/1 var(--font-sans); }
.card .who b { display: block; font: 600 0.875rem/1.2 var(--font-display); }
.card .who small { color: #6b7f99; }
.card .kv { display: flex; justify-content: space-between; gap: 0.5rem; }
.tag { display: inline-flex; padding: 0.2rem 0.5rem; border-radius: 999px; background: #e4effd; color: #0b57b8; font-size: 0.6875rem; font-weight: 600; }
.tag--ok { background: #e2f4ea; color: #137a46; }
.tag--paid { background: #fff0e2; color: #b45304; }
.card .line { display: flex; justify-content: space-between; gap: 0.5rem; }
.card .line--total { margin-top: auto; padding-top: 0.55rem; border-top: 1px solid #e6ecf4; font-weight: 600; }
.card .cal { display: flex; gap: 0.7rem; align-items: center; padding-bottom: 0.5rem; border-bottom: 1px solid #e6ecf4; }
.card .cal__d { width: 44px; text-align: center; border-radius: 8px; background: var(--navy); color: #fff; padding: 0.3rem 0; font: 600 1.125rem/1.1 var(--font-display); }
.card .cal__d small { display: block; font: 500 0.625rem/1 var(--font-mono); text-transform: uppercase; color: #a9bbd3; }
.card .cal b { display: block; font: 600 0.8125rem/1.25 var(--font-display); }
.card .cal small { color: #6b7f99; }
.card .amount { font: 600 1.75rem/1 var(--font-display); letter-spacing: -0.03em; margin: 0.4rem 0 auto; }

.smt__facts {
  list-style: none;
  margin: var(--space-xl) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--smt-line);
}
.smt__facts li { padding: 1.35rem 1.5rem 0 0; }
.smt__facts li + li { padding-left: 1.5rem; border-left: 1px solid var(--smt-line); }
.smt__facts b { display: block; font: 600 1.0625rem/1.3 var(--font-display); }
.smt__facts span { display: block; margin-top: 0.4rem; font-size: 0.9375rem; color: var(--smt-muted); }

@media (max-width: 1100px) {
  .pipeline {
    grid-template-columns: none;
    grid-auto-flow: column;
    grid-auto-columns: 250px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    margin-inline: calc(-1 * var(--gutter));
    padding: 0 var(--gutter) 1.25rem;
    scroll-padding-inline: var(--gutter);
    scrollbar-width: thin;
  }
  .pipeline::before { left: var(--gutter); right: auto; width: calc(250px * 5 + 1.25rem * 4); }
  .stage { scroll-snap-align: start; }
}
@media (max-width: 860px) {
  .smt__head { grid-template-columns: 1fr; row-gap: var(--space-l); }
  .smt__intro, .smt__title { grid-column: 1; }
  .smt__title { order: -1; }
  .smt__facts { grid-template-columns: 1fr; }
  .smt__facts li, .smt__facts li + li { padding: 1rem 0; border-left: 0; border-bottom: 1px solid var(--smt-line); }
}

/* ==========================================================================
   14. Engineering — architecture board + outcome groups
   ========================================================================== */
.eng {
  padding-block: var(--space-2xl);
  background:
    radial-gradient(50% 40% at 85% 35%, color-mix(in srgb, var(--brand-teal) 7%, transparent), transparent 70%),
    var(--ink-950);
}
.eng__head, .approach__head {
  margin-top: var(--space-l);
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--space-l);
  align-items: end;
}
.eng__head h2, .approach__head h2 { grid-column: 1 / span 7; max-width: 16ch; }
.eng__intro, .approach__head p { grid-column: 9 / -1; padding-bottom: 0.4rem; }
.eng__intro p { color: var(--on-ink-muted); font-size: var(--step-0); line-height: 1.6; }
.eng__intro .link-arrow { margin-top: 1.5rem; }

.arch {
  margin-top: var(--space-xl);
  border: 1px solid var(--ink-line-strong);
  border-radius: 14px;
  background: linear-gradient(180deg, var(--ink-900), var(--ink-950));
  overflow: hidden;
}
.arch__cap {
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--ink-line-strong);
  font: 500 var(--label)/1.4 var(--font-mono);
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--on-ink-muted);
}
.arch__cap span:last-child { color: var(--brand-teal); }
.arch__layer {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
  align-items: center;
  gap: 2rem;
  padding: 1.35rem 1.5rem;
  transition: background-color 0.3s;
}
.arch__layer + .arch__layer { border-top: 1px solid var(--ink-line); }
.arch__layer:hover { background: rgba(255, 255, 255, 0.02); }
.arch__meta { display: grid; grid-template-columns: 2.25rem 1fr; column-gap: 0.75rem; align-items: baseline; }
.arch__meta .n { grid-row: 1 / span 2; font: 500 var(--label)/1.6 var(--font-mono); color: var(--c); }
.arch__meta b { font: 600 1.125rem/1.25 var(--font-display); letter-spacing: -0.015em; color: var(--on-ink); }
.arch__meta small { font-size: 0.875rem; color: var(--on-ink-muted); }
.arch__blocks {
  position: relative;
  list-style: none; margin: 0;
  padding: 0 0 0 1.5rem;
  display: flex; flex-wrap: wrap; gap: 0.5rem;
}
.arch__blocks::before { /* data spine running through every layer */
  content: "";
  position: absolute;
  left: 0; top: -1.4rem; bottom: -1.4rem;
  width: 1px;
  background: repeating-linear-gradient(to bottom, var(--c) 0 5px, transparent 5px 12px);
  opacity: 0.55;
  animation: spine 2.4s linear infinite;
}
@keyframes spine { to { background-position: 0 24px; } }
.arch__blocks li {
  display: inline-flex; align-items: center; gap: 0.55rem;
  padding: 0.55rem 0.85rem;
  font-size: 0.9375rem;
  color: var(--on-ink-soft);
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--ink-line-strong);
  border-radius: 6px;
  transition: border-color 0.25s, color 0.25s;
}
.arch__blocks li::before { content: ""; width: 6px; height: 6px; border-radius: 1px; background: var(--c); }
.arch__blocks li:hover { border-color: color-mix(in srgb, var(--c) 60%, transparent); color: #fff; }

.groups { margin-top: var(--space-xl); }
.group {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 4fr) minmax(0, 7fr);
  column-gap: var(--space-l);
  padding-block: var(--space-l);
  border-top: 1px solid var(--ink-line);
}
.group__n {
  font: 500 var(--step-4)/0.9 var(--font-display);
  letter-spacing: -0.04em;
  background: var(--brand-gradient);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.group__lead h3 { font-size: var(--step-2); font-weight: 500; letter-spacing: -0.03em; color: var(--on-ink); }
.group__lead p { margin-top: 0.6rem; color: var(--on-ink-muted); max-width: 32ch; }
.group__caps { margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem var(--space-l); }
.group__caps dt { font: 600 1.0625rem/1.3 var(--font-display); letter-spacing: -0.01em; color: var(--on-ink); }
.group__caps dd { margin: 0.4rem 0 0; font-size: 0.9375rem; line-height: 1.55; color: var(--on-ink-muted); }

@media (max-width: 1024px) {
  .group { grid-template-columns: minmax(0, 1fr) minmax(0, 6fr); row-gap: 1.5rem; }
  .group__caps { grid-column: 2; }
}
@media (max-width: 860px) {
  .eng__head, .approach__head { grid-template-columns: 1fr; row-gap: var(--space-m); }
  .eng__head h2, .eng__intro, .approach__head h2, .approach__head p { grid-column: 1; }
  .arch__layer { grid-template-columns: 1fr; gap: 1rem; }
  .arch__blocks { padding-left: 1rem; }
}
@media (max-width: 560px) {
  .group { grid-template-columns: 1fr; }
  .group__caps { grid-column: 1; grid-template-columns: 1fr; }
}

/* ==========================================================================
   15. Problems
   ========================================================================== */
.problems-sec { padding-block: var(--space-2xl); }
.problems-sec__title { margin-top: var(--space-l); max-width: 17ch; }
.problems { list-style: none; margin: var(--space-xl) 0 0; padding: 0; counter-reset: p; }
.problems li {
  counter-increment: p;
  display: grid;
  grid-template-columns: 3.5rem minmax(0, 7fr) minmax(0, 5fr);
  gap: var(--space-l);
  align-items: start;
  padding-block: 2rem;
  border-top: 1px solid var(--paper-line);
}
.problems li:last-child { border-bottom: 1px solid var(--paper-line); }
.problems li::before { content: counter(p, decimal-leading-zero); padding-top: 0.6rem; font: 500 var(--label)/1 var(--font-mono); color: var(--on-paper-faint); }
.problems q {
  quotes: "“" "”";
  font: 500 clamp(1.5rem, 1rem + 1.5vw, 2.375rem)/1.15 var(--font-display);
  letter-spacing: -0.03em;
  color: var(--on-paper);
  max-width: 22ch;
}
.problems .fix { padding-top: 0.4rem; }
.problems .fix .label { display: block; margin-bottom: 0.6rem; font: 500 var(--label)/1 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent-ink); }
.problems .fix b { display: block; font: 600 1.125rem/1.3 var(--font-display); letter-spacing: -0.015em; }
.problems .fix span:last-child { display: block; margin-top: 0.4rem; color: var(--on-paper-muted); }
.problems-sec__more { margin-top: var(--space-l); }
@media (max-width: 860px) {
  .problems li { grid-template-columns: 2.25rem 1fr; row-gap: 1rem; }
  .problems .fix { grid-column: 2; }
}

/* ==========================================================================
   16. Approach
   ========================================================================== */
.approach { padding-block: var(--space-2xl); }
.approach__head p { color: var(--on-paper-muted); font-size: var(--step-0); line-height: 1.6; }
.steps {
  list-style: none;
  margin: var(--space-xl) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border-top: 1px solid var(--on-paper);
}
.steps li { position: relative; padding: 1.75rem 1.5rem 0 0; }
.steps li::before { content: ""; position: absolute; left: 0; top: -4px; width: 7px; height: 7px; background: var(--on-paper); }
.steps__n { display: block; font: 500 var(--step-4)/0.9 var(--font-display); letter-spacing: -0.05em; color: #a8a293; }
.steps h3 { margin-top: 1.25rem; font-size: var(--step-1); }
.steps p { margin-top: 0.6rem; font-size: 0.9375rem; line-height: 1.55; color: var(--on-paper-muted); }
.steps__loop .steps__n { color: var(--accent-ink); }
.steps__loop::before { background: var(--accent-ink) !important; }
.steps__loop p::after {
  content: "↺ Back to 01";
  display: block;
  margin-top: 1rem;
  font: 500 var(--label)/1 var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--accent-ink);
}
@media (max-width: 960px) {
  .steps { grid-template-columns: 1fr 1fr; row-gap: var(--space-l); }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; border-top: 0; }
  .steps li { padding: 1.5rem 0 0; border-top: 1px solid var(--on-paper); }
  .steps__n { font-size: 2.75rem; }
}

/* ==========================================================================
   17. Why Yelko
   ========================================================================== */
.why { padding-block: var(--space-2xl); }
.why__grid {
  margin-top: var(--space-l);
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--space-l);
  align-items: start;
}
.why__title { grid-column: 1 / span 5; font-size: var(--step-4); letter-spacing: -0.04em; line-height: 1.02; position: sticky; top: calc(var(--header-h) + 2rem); }
.why__title span { color: #86837b; }
.principles { grid-column: 7 / -1; margin: 0; }
.principles div { padding-block: 1.6rem; border-top: 1px solid var(--paper-line); }
.principles div:last-child { border-bottom: 1px solid var(--paper-line); }
.principles dt { font: 600 var(--step-1)/1.25 var(--font-display); letter-spacing: -0.02em; }
.principles dd { margin: 0.5rem 0 0; color: var(--on-paper-muted); max-width: 52ch; }
@media (max-width: 860px) {
  .why__grid { grid-template-columns: 1fr; row-gap: var(--space-l); }
  .why__title, .principles { grid-column: 1; }
  .why__title { position: static; }
}

/* ==========================================================================
   18. CTA
   ========================================================================== */
.cta { padding-block: var(--space-2xl) var(--space-xl); background: var(--ink-950); }
.cta__panel {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding: clamp(2rem, 1rem + 5vw, 5.5rem);
  border: 1px solid var(--ink-line-strong);
  border-radius: 20px;
  background:
    radial-gradient(60% 80% at 85% 110%, color-mix(in srgb, var(--brand-teal) 22%, transparent), transparent 70%),
    radial-gradient(40% 60% at 0% 0%, color-mix(in srgb, var(--brand-cyan) 8%, transparent), transparent 70%),
    var(--ink-900);
}
.cta__panel::before {
  content: "";
  position: absolute; inset: 0; z-index: -1;
  background-image: linear-gradient(to right, var(--ink-line) 1px, transparent 1px);
  background-size: calc(100% / 12) 100%;
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 50%, transparent);
  mask-image: linear-gradient(to bottom, transparent, #000 50%, transparent);
}
.cta__title {
  margin-top: 1.5rem;
  max-width: 14ch;
  font-size: clamp(2.5rem, 1.3rem + 4.2vw, 5.5rem);
  font-weight: 500;
  line-height: 0.98;
  letter-spacing: -0.05em;
  color: var(--on-ink);
}
.cta__title span { color: #6c7279; }
.cta__row {
  margin-top: var(--space-xl);
  padding-top: var(--space-l);
  border-top: 1px solid var(--ink-line-strong);
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center;
  gap: var(--space-m) var(--space-l);
}
.cta__row p { max-width: 46ch; color: var(--on-ink-soft); font-size: var(--step-0); line-height: 1.6; }

/* ==========================================================================
   19. Footer
   ========================================================================== */
.site-footer { background: var(--ink-950); color: var(--on-ink-muted); padding-block: var(--space-xl) var(--space-l); font-size: 0.9375rem; }
.footer-top {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--space-l);
  padding-top: var(--space-l);
  border-top: 1px solid var(--ink-line-strong);
}
.footer-brand { grid-column: 1 / span 5; }
.footer-brand img { height: 32px; width: auto; }
.footer-brand p { margin-top: 1.25rem; max-width: 36ch; line-height: 1.6; }
.footer-cols { grid-column: 7 / -1; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-l); }
.site-footer h2 { font: 500 var(--label)/1 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--on-ink-faint); margin-bottom: 1.25rem; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.7rem; }
.site-footer ul a { color: var(--on-ink-soft); transition: color 0.2s; }
.site-footer ul a:hover { color: #fff; }
.footer-bottom {
  margin-top: var(--space-xl);
  padding-top: 1.25rem;
  border-top: 1px solid var(--ink-line);
  display: flex; flex-wrap: wrap; gap: 0.75rem var(--space-l); justify-content: space-between;
  font-size: 0.875rem;
  color: var(--on-ink-faint);
}
.footer-bottom nav { display: flex; gap: var(--space-m); }
.footer-bottom a:hover { color: var(--on-ink); }
@media (max-width: 860px) {
  .footer-top { grid-template-columns: 1fr; row-gap: var(--space-l); }
  .footer-brand, .footer-cols { grid-column: 1; }
}
@media (max-width: 480px) { .footer-cols { grid-template-columns: 1fr 1fr; } }

/* ==========================================================================
   20. Inner pages — shared
   ========================================================================== */
.page-hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding-block: clamp(2.5rem, 6vh, 4.5rem) var(--space-xl);
  background:
    radial-gradient(55% 70% at 85% 100%, color-mix(in srgb, var(--brand-teal) 10%, transparent), transparent 70%),
    var(--ink-950);
  border-bottom: 1px solid var(--ink-line);
}
.page-hero .hero__kicker { margin-top: var(--space-xl); }
.page-hero__title {
  margin-top: 1.25rem;
  max-width: 17ch;
  font-size: var(--step-5);
  font-weight: 540;
  line-height: 0.98;
  letter-spacing: -0.05em;
  color: var(--on-ink);
}
.page-hero__title .dim { color: #6c7279; }
.page-hero__lede { margin-top: var(--space-l); max-width: 56ch; font-size: var(--step-1); line-height: 1.55; color: var(--on-ink-soft); }

.crumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.5rem; font: 500 var(--label)/1.4 var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--on-ink-muted); }
.crumbs li + li::before { content: "/"; margin-right: 0.5rem; color: var(--on-ink-faint); }
.crumbs a:hover { color: var(--on-ink); }
.crumbs [aria-current] { color: var(--on-ink-soft); }

.block { padding-block: var(--space-2xl); }
.block--tight { padding-block: var(--space-xl); }
.split {
  margin-top: var(--space-l);
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--space-l);
  align-items: start;
}
.split__head { grid-column: 1 / span 5; }
.split__head h2 { font-size: var(--step-4); letter-spacing: -0.04em; line-height: 1.02; }
.split__head p { margin-top: 1.25rem; color: var(--on-paper-muted); max-width: 40ch; }
.theme-ink .split__head p { color: var(--on-ink-muted); }
.split__body { grid-column: 7 / -1; }
.split__head--sticky { position: sticky; top: calc(var(--header-h) + 2rem); }
@media (max-width: 860px) {
  .split { grid-template-columns: 1fr; row-gap: var(--space-l); }
  .split__head, .split__body { grid-column: 1; }
  .split__head--sticky { position: static; }
}

/* Definition rows (hairline list) */
.rows { margin: 0; padding: 0; list-style: none; }
.rows > * { padding-block: 1.5rem; border-top: 1px solid var(--paper-line); }
.rows > *:last-child { border-bottom: 1px solid var(--paper-line); }
.theme-ink .rows > * { border-color: var(--ink-line); }
.rows dt, .rows h3 { font: 600 var(--step-1)/1.25 var(--font-display); letter-spacing: -0.02em; }
.rows dd, .rows p { margin: 0.5rem 0 0; color: var(--on-paper-muted); max-width: 56ch; }
.theme-ink .rows dd, .theme-ink .rows p { color: var(--on-ink-muted); }

/* Tick list */
.ticks { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.55rem; }
.ticks li { position: relative; padding-left: 1.6rem; line-height: 1.5; }
.ticks li::before { content: ""; position: absolute; left: 0; top: 0.55em; width: 10px; height: 6px; border-left: 1.5px solid var(--accent-ink); border-bottom: 1.5px solid var(--accent-ink); transform: rotate(-45deg); }
.theme-ink .ticks li::before { border-color: var(--brand-teal); }
.ticks--cols { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: var(--space-l); }
@media (max-width: 640px) { .ticks--cols { grid-template-columns: 1fr; } }

/* Mono label */
.label { margin: 0; font: 500 var(--label)/1.4 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--on-paper-muted); }
.theme-ink .label { color: var(--on-ink-muted); }

/* Hairline grid of facts / standards (no cards) */
.grid-lines { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--paper-line); border-left: 1px solid var(--paper-line); }
.grid-lines > * { padding: 1.75rem 1.5rem 2rem; border-right: 1px solid var(--paper-line); border-bottom: 1px solid var(--paper-line); }
.theme-ink .grid-lines, .theme-ink .grid-lines > * { border-color: var(--ink-line); }
.grid-lines h3 { font: 600 var(--step-1)/1.25 var(--font-display); letter-spacing: -0.02em; }
.grid-lines p { margin-top: 0.6rem; font-size: 0.9688rem; line-height: 1.55; color: var(--on-paper-muted); }
.theme-ink .grid-lines p { color: var(--on-ink-muted); }
.grid-lines .k { display: block; margin-bottom: 1.25rem; font: 500 var(--label)/1 var(--font-mono); color: var(--accent-ink); letter-spacing: 0.08em; }
.theme-ink .grid-lines .k { color: var(--brand-teal); }
@media (max-width: 960px) { .grid-lines { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .grid-lines { grid-template-columns: 1fr; } }

/* Long-form detail rows (engineering capabilities, solutions) */
.detail {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--space-l);
  padding-block: var(--space-xl);
  border-top: 1px solid var(--paper-line);
  scroll-margin-top: calc(var(--header-h) + 1rem);
}
.theme-ink .detail { border-color: var(--ink-line); }
.detail__n { grid-column: 1 / span 1; font: 500 var(--label)/2.4 var(--font-mono); color: var(--accent-ink); }
.theme-ink .detail__n { color: var(--brand-teal); }
.detail__head { grid-column: 2 / span 5; }
.detail__head h2, .detail__head h3 { font-size: var(--step-3); letter-spacing: -0.035em; line-height: 1.05; }
.detail__head p { margin-top: 1rem; font-size: var(--step-0); color: var(--on-paper-muted); max-width: 40ch; }
.theme-ink .detail__head p { color: var(--on-ink-muted); }
.detail__body { grid-column: 8 / -1; display: grid; gap: 1.75rem; }
.detail__body p { color: var(--on-paper-muted); }
.theme-ink .detail__body p { color: var(--on-ink-muted); }
.detail__body .label { margin-bottom: 0.75rem; display: block; }
@media (max-width: 960px) {
  .detail__n { grid-column: 1 / -1; }
  .detail__head { grid-column: 1 / span 6; }
  .detail__body { grid-column: 7 / -1; }
}
@media (max-width: 760px) {
  .detail { grid-template-columns: 1fr; row-gap: 1.25rem; }
  .detail__n, .detail__head, .detail__body { grid-column: 1; }
}

/* Sidebar index + content (solutions) */
.with-index { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); column-gap: var(--space-xl); align-items: start; }
.side-index { position: sticky; top: calc(var(--header-h) + 2rem); }
.side-index ol { list-style: none; margin: 1rem 0 0; padding: 0; border-top: 1px solid var(--paper-line); }
.side-index a { display: flex; gap: 0.75rem; padding: 0.7rem 0; border-bottom: 1px solid var(--paper-line); font-size: 0.9375rem; color: var(--on-paper-muted); transition: color 0.2s, padding 0.3s var(--ease-out); }
.side-index a span { font: 500 var(--label)/1.7 var(--font-mono); color: var(--on-paper-faint); }
.side-index a:hover, .side-index a.is-active { color: var(--on-paper); padding-left: 0.35rem; }
.side-index a.is-active span { color: var(--accent-ink); }
.with-index .detail { grid-template-columns: repeat(9, minmax(0, 1fr)); }
.with-index .detail__head { grid-column: 1 / span 4; }
.with-index .detail__body { grid-column: 5 / -1; }
@media (max-width: 1024px) {
  .with-index { grid-template-columns: 1fr; }
  .side-index { display: none; }
}
@media (max-width: 760px) {
  .with-index .detail { grid-template-columns: 1fr; }
  .with-index .detail__head, .with-index .detail__body { grid-column: 1; }
}

/* Portfolio table (products page) */
.portfolio { margin-top: var(--space-xl); border-top: 1px solid var(--ink-line-strong); }
.portfolio__row {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 3fr) minmax(0, 4fr) minmax(0, 1.4fr) auto;
  align-items: center;
  gap: var(--space-m);
  padding-block: 1.25rem;
  border-bottom: 1px solid var(--ink-line);
  transition: background-color 0.25s;
}
a.portfolio__row:hover { background: rgba(255, 255, 255, 0.025); }
.portfolio__row--head { padding-block: 0.85rem; font: 500 var(--label)/1 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--on-ink-faint); }
.portfolio__name { display: flex; align-items: center; gap: 0.85rem; font: 600 1.125rem/1.2 var(--font-display); color: var(--on-ink); }
.portfolio__name img { width: 34px; height: 34px; padding: 5px; background: #fff; border-radius: 8px; }
.portfolio__row span { color: var(--on-ink-muted); font-size: 0.9375rem; }
.status { display: inline-flex; align-items: center; gap: 0.45rem; font: 500 var(--label)/1 var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--brand-teal) !important; }
.status::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; box-shadow: 0 0 8px currentColor; }
.portfolio__go { font-family: var(--font-mono); color: var(--on-ink-faint); }
@media (max-width: 860px) {
  .portfolio__row { grid-template-columns: 1fr auto; row-gap: 0.4rem; }
  .portfolio__row--head { display: none; }
  .portfolio__row > span:nth-child(2), .portfolio__row > span:nth-child(3) { grid-column: 1; }
  .portfolio__row > .status { grid-column: 1; }
  .portfolio__go { grid-column: 2; grid-row: 1; }
}

/* Prose (articles, legal) */
.prose { max-width: 68ch; font-size: 1.0938rem; line-height: 1.72; color: #2a2f35; }
.prose > * + * { margin-top: 1.15em; }
.prose h2 { margin-top: 2.2em; font-size: var(--step-2); letter-spacing: -0.03em; line-height: 1.15; color: var(--on-paper); }
.prose h3 { margin-top: 1.8em; font-size: var(--step-1); color: var(--on-paper); }
.prose ul, .prose ol { padding-left: 1.25rem; }
.prose li + li { margin-top: 0.45em; }
.prose a { color: var(--accent-ink); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.prose strong { color: var(--on-paper); font-weight: 600; }
.prose blockquote { margin-inline: 0; padding-left: 1.25rem; border-left: 2px solid var(--accent-ink); font: 500 var(--step-1)/1.4 var(--font-display); letter-spacing: -0.015em; color: var(--on-paper); }
.prose table { width: 100%; border-collapse: collapse; font-size: 0.9375rem; }
.prose th, .prose td { text-align: left; padding: 0.7rem 0.75rem 0.7rem 0; border-bottom: 1px solid var(--paper-line); vertical-align: top; }
.prose th { font: 500 var(--label)/1.4 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--on-paper-muted); }

.article-layout { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 8fr) minmax(0, 1fr); column-gap: var(--space-l); }
.article-layout .article-meta { position: sticky; top: calc(var(--header-h) + 2rem); align-self: start; display: grid; gap: 1rem; font-size: 0.9375rem; color: var(--on-paper-muted); }
.article-meta dt { font: 500 var(--label)/1.4 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--on-paper-muted); }
.article-meta dd { margin: 0.2rem 0 0; color: var(--on-paper); }
@media (max-width: 960px) {
  .article-layout { grid-template-columns: 1fr; row-gap: var(--space-l); }
  .article-layout .article-meta { position: static; grid-template-columns: repeat(3, auto); justify-content: start; gap: 1.5rem; }
}

/* Insights index */
.posts { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--on-paper); }
.post {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 6fr) minmax(0, 4fr);
  column-gap: var(--space-l);
  padding-block: 2rem;
  border-bottom: 1px solid var(--paper-line);
  transition: padding 0.4s var(--ease-out);
}
.post:hover { padding-left: 0.5rem; }
.post__meta { font: 500 var(--label)/1.6 var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--on-paper-muted); }
.post__meta b { display: block; font-weight: 500; color: var(--accent-ink); }
.post h2 { font-size: var(--step-2); letter-spacing: -0.03em; line-height: 1.15; }
.post h2 a::after { content: ""; position: absolute; inset: 0; }
.post { position: relative; }
.post p { color: var(--on-paper-muted); }
@media (max-width: 860px) {
  .post { grid-template-columns: 1fr; row-gap: 0.75rem; }
}

/* Topics strip */
.topics { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: var(--space-l); }
.topics span { padding: 0.45rem 0.85rem; border: 1px solid var(--ink-line-strong); border-radius: 999px; font-size: 0.875rem; color: var(--on-ink-soft); }

/* Facts table (about) */
.facts { margin: 0; display: grid; grid-template-columns: max-content 1fr; }
.facts dt, .facts dd { margin: 0; padding: 1rem 0; border-top: 1px solid var(--paper-line); }
.facts dt { padding-right: var(--space-l); font: 500 var(--label)/1.9 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--on-paper-muted); }
.facts dd { color: var(--on-paper); }
.facts a { color: var(--accent-ink); }

/* Work-with-us models (horizontal) */
.models { list-style: none; margin: var(--space-xl) 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--on-ink); }
.models > li { position: relative; padding: 1.75rem 1.75rem 0 0; }
.models > li + li { padding-left: 1.75rem; border-left: 1px solid var(--ink-line); }
.models .k { font: 500 var(--label)/1 var(--font-mono); letter-spacing: 0.08em; color: var(--brand-teal); }
.models h3 { margin-top: 1rem; font-size: var(--step-2); font-weight: 500; letter-spacing: -0.03em; color: var(--on-ink); }
.models p { margin-top: 0.75rem; color: var(--on-ink-muted); }
.models .ticks { margin-top: 1.25rem; color: var(--on-ink-soft); font-size: 0.9375rem; }
@media (max-width: 860px) {
  .models { grid-template-columns: 1fr; }
  .models > li, .models > li + li { padding: 1.5rem 0; border-left: 0; border-bottom: 1px solid var(--ink-line); }
}

/* ==========================================================================
   21. Contact form
   ========================================================================== */
.contact-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); column-gap: var(--space-xl); align-items: start; }
.contact-aside { position: sticky; top: calc(var(--header-h) + 2rem); display: grid; gap: var(--space-l); }
@media (max-width: 960px) {
  .contact-grid { grid-template-columns: 1fr; row-gap: var(--space-xl); }
  .contact-aside { position: static; }
}
.form { display: grid; gap: 1.75rem; }
.form fieldset { margin: 0; padding: 0; border: 0; min-width: 0; }
.form legend, .field label { display: block; margin-bottom: 0.6rem; font: 600 1rem/1.3 var(--font-display); letter-spacing: -0.01em; color: var(--on-paper); }
.form legend small, .field label small { font: 400 0.875rem var(--font-sans); color: var(--on-paper-muted); margin-left: 0.35rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } }
.field input, .field textarea, .field select {
  width: 100%;
  min-height: 52px;
  padding: 0.85rem 1rem;
  font: 400 1rem/1.4 var(--font-sans);
  color: var(--on-paper);
  background: #fbfaf7;
  border: 1px solid var(--paper-3);
  border-radius: 10px;
  transition: border-color 0.2s, box-shadow 0.2s, background-color 0.2s;
  -webkit-appearance: none;
  appearance: none;
}
.field textarea { min-height: 160px; resize: vertical; }
.field select { background-image: linear-gradient(45deg, transparent 50%, #545a62 50%), linear-gradient(135deg, #545a62 50%, transparent 50%); background-position: calc(100% - 20px) 50%, calc(100% - 15px) 50%; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 2.5rem; }
.field input:hover, .field textarea:hover, .field select:hover { border-color: #c4bfb2; }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; background: #fff; border-color: var(--accent-ink); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-ink) 14%, transparent); }
.field [aria-invalid="true"] { border-color: #b42318; box-shadow: 0 0 0 4px rgba(180, 35, 24, 0.1); }
.field__error { display: none; margin-top: 0.45rem; font-size: 0.875rem; color: #b42318; }
.field.has-error .field__error { display: block; }
.field__hint { margin-top: 0.45rem; font-size: 0.875rem; color: var(--on-paper-muted); }

.choices { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.6rem; }
@media (max-width: 760px) { .choices { grid-template-columns: 1fr 1fr; } }
@media (max-width: 420px) { .choices { grid-template-columns: 1fr; } }
.choice { position: relative; }
.choice input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.choice span {
  display: flex; align-items: center; gap: 0.7rem;
  height: 100%;
  min-height: 56px;
  padding: 0.75rem 0.95rem;
  font-size: 0.9375rem;
  line-height: 1.3;
  background: #fbfaf7;
  border: 1px solid var(--paper-3);
  border-radius: 10px;
  transition: border-color 0.2s, background-color 0.2s, box-shadow 0.2s;
}
.choice span::before { content: ""; flex: none; width: 16px; height: 16px; border-radius: 50%; border: 1.5px solid #a8a293; transition: border 0.2s, box-shadow 0.2s; }
.choice input:hover + span { border-color: #c4bfb2; }
.choice input:checked + span { background: #fff; border-color: var(--accent-ink); box-shadow: 0 0 0 1px var(--accent-ink); }
.choice input:checked + span::before { border: 5px solid var(--accent-ink); }
.choice input:focus-visible + span { outline: 2px solid var(--accent-ink); outline-offset: 2px; }
.choices--pills { display: flex; flex-wrap: wrap; }
.choices--pills .choice span { min-height: 44px; padding: 0.5rem 0.95rem; border-radius: 999px; }
.choices--pills .choice span::before { display: none; }
.choices--pills .choice input:checked + span { background: var(--on-paper); color: var(--paper); border-color: var(--on-paper); box-shadow: none; }

.hp { position: absolute !important; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.form__submit { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.5rem; padding-top: 0.5rem; }
.form__submit p { font-size: 0.875rem; color: var(--on-paper-muted); max-width: 40ch; }
.form .btn[disabled] { opacity: 0.7; cursor: progress; }
.spinner { width: 16px; height: 16px; border-radius: 50%; border: 2px solid currentColor; border-right-color: transparent; animation: spin 0.8s linear infinite; display: none; }
.is-sending .spinner { display: inline-block; }
.is-sending .arrow { display: none; }
.form-status { display: none; padding: 1rem 1.25rem; border-radius: 10px; font-size: 0.9688rem; }
.form-status.is-error { display: block; background: #fdf0ee; color: #8a1c12; border: 1px solid #f3c7c0; }
.form-success { display: none; padding: var(--space-l); border: 1px solid var(--paper-line); border-radius: 14px; background: #fbfaf7; }
.form-success.is-visible { display: block; }
.form-success h2 { font-size: var(--step-3); letter-spacing: -0.035em; }
.form-success p { margin-top: 1rem; color: var(--on-paper-muted); max-width: 48ch; }

/* 404 */
.notfound { min-height: calc(100svh - var(--header-h)); display: grid; align-items: center; }

/* ---------- 22. Motion ---------- */
.js .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
  transition-delay: var(--delay, 0s);
}
.js .reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .js .reveal { opacity: 1; transform: none; }
}