/* ============================================================
   SmartX Ops — site shell + components
   Layered on top of styles.css (tokens + base type roles).
   Covers: nav, footer, section rhythm, hero, flagship blocks,
   proof cards, method stepper, CTA band, concept-graphic frame,
   scroll-reveal. Hard edges, lines over shadows, teal rationed.
   ============================================================ */

/* ---------- shared atoms ---------- */
.lockup { display: inline-flex; align-items: center; font-family: var(--font-display); font-weight: 600; letter-spacing: -0.022em; color: var(--text); line-height: 1; }
.lk-mark { width: 0.94em; height: 0.94em; margin: 0 -0.055em; flex: none; }

.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }

.btn { --b: var(--text); display: inline-flex; align-items: center; gap: var(--sp-2); font: 500 var(--fs-sm)/1 var(--font-mono); letter-spacing: 0.04em; text-transform: uppercase; padding: 14px 22px; border: 1px solid var(--b); border-radius: var(--r-1); color: var(--text); background: transparent; cursor: pointer; transition: background var(--dur-1) var(--ease-standard), color var(--dur-1) var(--ease-standard), border-color var(--dur-1) var(--ease-standard); text-decoration: none; white-space: nowrap; }
.btn:hover { text-decoration: none; }
.btn--solid { background: var(--text); color: var(--text-inverse); border-color: var(--text); }
.btn--solid:hover { background: transparent; color: var(--text); }
.btn--accent { background: var(--accent); border-color: var(--accent); color: var(--accent-contrast); }
.btn--accent:hover { background: transparent; color: var(--accent-text); border-color: var(--accent); }
.btn--ghost:hover { background: var(--text); color: var(--text-inverse); }
.btn .arr { transition: transform var(--dur-1) var(--ease-standard); }
.btn:hover .arr { transform: translateX(3px); }

.tlink { display: inline-flex; align-items: center; gap: var(--sp-2); font: 500 var(--fs-sm)/1 var(--font-mono); letter-spacing: 0.04em; text-transform: uppercase; color: var(--accent-text); white-space: nowrap; }
.tlink .arr { transition: transform var(--dur-1) var(--ease-standard); }
.tlink:hover { text-decoration: none; }
.tlink:hover .arr { transform: translateX(3px); }

.eyebrow-row { display: inline-flex; align-items: center; gap: var(--sp-3); margin-bottom: var(--sp-5); }
.eyebrow-row::before { content: ""; width: 28px; height: 1px; background: var(--accent); flex: none; }

/* ---------- top nav ---------- */
.nav { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 86%, transparent); backdrop-filter: saturate(140%) blur(10px); border-bottom: 1px solid var(--border); }
.nav__in { height: var(--nav-h); display: flex; align-items: center; justify-content: space-between; gap: var(--sp-6); }
.nav__brand { font-size: 21px; }
.nav__links { display: flex; align-items: center; gap: var(--sp-8); }
.nav__link { font: 500 var(--fs-meta)/1 var(--font-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-secondary); padding: 8px 0; position: relative; white-space: nowrap; }
.nav__link:hover { color: var(--text); text-decoration: none; }
.nav__link[aria-current="page"] { color: var(--text); }
.nav__link[aria-current="page"]::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 1px; background: var(--accent); }
.nav__cta { display: flex; align-items: center; gap: var(--sp-5); }
.nav__burger { display: none; width: 40px; height: 40px; border: 1px solid var(--border-strong); border-radius: var(--r-1); background: var(--bg-raised); cursor: pointer; align-items: center; justify-content: center; padding: 0; }
.nav__burger span { display: block; width: 16px; height: 1.5px; background: var(--text); position: relative; }
.nav__burger span::before, .nav__burger span::after { content: ""; position: absolute; left: 0; width: 16px; height: 1.5px; background: var(--text); }
.nav__burger span::before { top: -5px; } .nav__burger span::after { top: 5px; }

/* ---------- mobile sheet ---------- */
.msheet { position: fixed; inset: var(--nav-h) 0 0; z-index: 49; background: var(--bg); border-top: 1px solid var(--border); transform: translateY(-8px); opacity: 0; pointer-events: none; transition: opacity var(--dur-2) var(--ease-standard), transform var(--dur-2) var(--ease-standard); display: flex; flex-direction: column; padding: var(--sp-6) var(--gutter) var(--sp-10); gap: var(--sp-2); }
.msheet.open { opacity: 1; transform: none; pointer-events: auto; }
.msheet a.m-link { font: 500 var(--fs-2xl)/1 var(--font-display); letter-spacing: -0.01em; color: var(--text); padding: var(--sp-4) 0; border-bottom: 1px solid var(--border); }
.msheet a.m-link:hover { text-decoration: none; color: var(--accent-text); }
.msheet .btn { margin-top: var(--sp-6); justify-content: center; }

/* ---------- section rhythm ---------- */
.section { padding-block: var(--section-pad); }
.section--tight { padding-block: clamp(3rem, 6vw, 6rem); }
.section--ink { background: var(--bg); color: var(--text); }
/* Any section flipped to the dark theme gets the ink background automatically,
   so paper-colored text always lands on ink (never on the page paper). */
.section[data-theme="dark"] { background: var(--bg); }
.band-line { border-top: 1px solid var(--border); }
.sec-head { max-width: 60ch; }
.sec-head .t-h2 { margin: 0; }
.sec-head .t-lead { margin: var(--sp-5) 0 0; }

/* blueprint grid texture, used on selected ink sections */
.blueprint { position: relative; isolation: isolate; }
.blueprint::before { content: ""; position: absolute; inset: 0; z-index: -1; background-image: linear-gradient(var(--grid-line) 1px, transparent 1px), linear-gradient(90deg, var(--grid-line) 1px, transparent 1px); background-size: 48px 48px; -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 40%, transparent 100%); mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 40%, transparent 100%); }

/* ---------- hero ---------- */
.hero { position: relative; overflow: hidden; }
.hero__grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(2rem, 5vw, 5rem); align-items: center; padding-block: clamp(3rem, 7vw, 7rem) clamp(3.5rem, 8vw, 8rem); }

/* full-bleed background-video hero (Home) */
.hero--video { isolation: isolate; background: var(--c-ink-950); --bg-cut: 11%; --bg-blur: 4px; }
.hero--video .hero__bg { position: absolute; top: -2%; left: 0; width: calc(100% + var(--bg-cut)); height: 104%; object-fit: cover; object-position: left center; z-index: -2; filter: blur(var(--bg-blur)) brightness(0.92) saturate(0.95); pointer-events: none; }
.hero--video .hero__scrim { position: absolute; inset: 0; z-index: -1; background: linear-gradient(90deg, rgba(10,14,22,0.90) 0%, rgba(10,14,22,0.78) 30%, rgba(10,14,22,0.42) 60%, rgba(10,14,22,0.12) 85%, rgba(10,14,22,0.04) 100%), linear-gradient(0deg, rgba(10,14,22,0.45) 0%, rgba(10,14,22,0) 32%); }
.hero--video .hero__inner { display: flex; align-items: center; min-height: clamp(34rem, 78vh, 46rem); padding-block: clamp(3rem, 7vw, 6rem); }
.hero--video .hero__copy { max-width: 42rem; }
.hero--video .hero__sub { color: var(--c-ink-200); }
.hero--video .hero__note { color: var(--c-ink-300); }

/* hero video slot (Home) — SQUARE frame, centered crop.
   object-fit:cover fills the 1:1 box and crops equally on both sides;
   a small over-scale (centered) zooms in a touch and clears any
   corner watermark. --hv-scale = zoom amount. No re-encode. */
.hero-video { width: 100%; }
.hero-video__frame { position: relative; width: 100%; aspect-ratio: 1 / 1; overflow: hidden; line-height: 0; border: 1px solid var(--border); border-radius: var(--r-2); background: var(--bg-sunken); }
.hero-video__el { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; transform: scale(var(--hv-scale, 1.06)); transform-origin: center; }
.hero-video__ph { aspect-ratio: 1 / 1; width: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: var(--sp-4); border: 1px dashed var(--border-strong); border-radius: var(--r-2); background: var(--bg-sunken); color: var(--text-muted); }
.hero-video__ph svg { width: 48px; height: 48px; opacity: 0.6; }
.hero__h1 { margin: var(--sp-6) 0 0; }
.hero__sub { margin: var(--sp-6) 0 0; max-width: 46ch; font-size: var(--fs-md); }
.hero__cta { margin-top: var(--sp-10); display: flex; align-items: center; gap: var(--sp-5); flex-wrap: wrap; }
.hero__note { font: 500 var(--fs-meta)/1 var(--font-mono); letter-spacing: 0.06em; color: var(--text-muted); }
.hero__art { position: relative; display: flex; justify-content: center; width: 100%; }

/* ---------- OS ring graphic ---------- */
.os-ring { width: 100%; max-width: 520px; height: auto; display: block; }
.os-legend { margin: var(--sp-8) auto 0; max-width: 400px; display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-3) var(--sp-6); padding-top: var(--sp-6); border-top: 1px solid var(--border); }
.os-legend li { display: flex; align-items: baseline; gap: var(--sp-3); list-style: none; font: 400 var(--fs-sm)/1.3 var(--font-sans); color: var(--text-secondary); }
.os-legend .n { font: 500 var(--fs-meta)/1 var(--font-mono); letter-spacing: 0.06em; color: var(--text-muted); min-width: 1.4em; }

/* ---------- flagship block ---------- */
.flagship__grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 5rem); align-items: center; }
.flagship--rev .flagship__art { order: -1; }
.flagship__body .t-h2 { margin: var(--sp-5) 0 0; }
.flagship__body .lede { margin: var(--sp-6) 0 0; color: var(--text-secondary); font-size: var(--fs-md); line-height: var(--lh-prose); max-width: 48ch; }
.flagship__body .more { margin-top: var(--sp-8); }

/* layer stack (OS up-close) */
.layerstack { display: flex; flex-direction: column; gap: var(--sp-2); width: 100%; max-width: 460px; }
.layer { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: var(--sp-4); padding: 16px 18px; border: 1px solid var(--border); border-radius: var(--r-2); background: var(--bg-raised); }
.layer .ix { font: 500 var(--fs-meta)/1 var(--font-mono); letter-spacing: 0.06em; color: var(--text-muted); }
.layer .nm { font: 600 var(--fs-base)/1 var(--font-display); letter-spacing: -0.01em; }
.layer .ds { font: 400 var(--fs-sm)/1.3 var(--font-sans); color: var(--text-secondary); text-align: right; }
.layer--core { background: var(--accent); border-color: var(--accent); }
.layer--core .ix { color: color-mix(in srgb, var(--accent-contrast) 70%, transparent); }
.layer--core .nm, .layer--core .ds { color: var(--accent-contrast); }
.layerstack .cap { margin-top: var(--sp-3); text-align: center; }

/* ---------- proof strip ---------- */
.proof__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-5); margin-top: var(--sp-12); }
.proof-card { display: flex; flex-direction: column; border: 1px solid var(--border); border-radius: var(--r-2); background: var(--bg-raised); padding: var(--sp-6); transition: border-color var(--dur-1) var(--ease-standard), transform var(--dur-2) var(--ease-standard); }
.proof-card:hover { border-color: var(--border-strong); transform: translateY(-2px); text-decoration: none; }
.proof-card .thumb { aspect-ratio: 16 / 9; border: 1px solid var(--border); border-radius: var(--r-1); background: var(--bg-sunken); margin-bottom: var(--sp-5); overflow: hidden; }
.proof-card .thumb svg { width: 100%; height: 100%; display: block; }
/* diagram-library variant: transparent, no box behind the diagram */
.proof-card .thumb--dgm { aspect-ratio: auto; border: 0; background: transparent; overflow: visible; display: flex; align-items: center; justify-content: center; padding: var(--sp-3) 0; }
.proof-card .thumb--dgm .dgm { max-width: 340px; }
/* sys-card (case study) diagram thumb — transparent, keeps the divider */
.sys-card .thumb--dgm { aspect-ratio: auto; background: transparent; display: flex; align-items: center; justify-content: center; padding: var(--sp-6) var(--sp-6) var(--sp-2); }
.sys-card .thumb--dgm .dgm { max-width: 320px; }
/* custom-card (pattern) mini diagram thumb — wider column so labels read.
   Double-class throughout to beat the base .custom-card .thumb rules (which
   appear later in the file and would otherwise win on source order). */
.custom-card.custom-card--dgm { grid-template-columns: 150px 1fr; }
.custom-card.custom-card--dgm .thumb--dgm { width: auto; height: auto; border: 0; background: transparent; display: flex; align-items: center; justify-content: center; }
.custom-card.custom-card--dgm .thumb--dgm .dgm { width: 100%; max-width: 150px; }
.proof-card h3 { margin: 0; font: 600 var(--fs-lg)/1.2 var(--font-display); letter-spacing: -0.01em; color: var(--text); }
.proof-card p { margin: var(--sp-3) 0 0; font: 400 var(--fs-sm)/1.5 var(--font-sans); color: var(--text-secondary); }
.proof-card .go { margin-top: auto; padding-top: var(--sp-5); font: 500 var(--fs-meta)/1 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent-text); display: inline-flex; align-items: center; gap: var(--sp-2); }

/* ---------- method one-liner ---------- */
.method-band { display: grid; grid-template-columns: 1.1fr 1.4fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.stepmini { display: flex; align-items: center; gap: 0; flex-wrap: wrap; }
.stepmini .st { display: flex; align-items: center; gap: var(--sp-2); }
.stepmini .dot { width: 8px; height: 8px; border-radius: var(--r-pill); border: 1.5px solid var(--text); flex: none; }
.stepmini .st:first-child .dot { background: var(--accent); border-color: var(--accent); }
.stepmini .lab { font: 500 var(--fs-sm)/1 var(--font-mono); letter-spacing: 0.04em; color: var(--text); }
.stepmini .sep { width: 26px; height: 1px; background: var(--border-strong); margin: 0 var(--sp-3); }

/* ---------- trust anchor ---------- */
.trust { display: flex; flex-direction: column; align-items: center; text-align: center; gap: var(--sp-5); }
.trust p { margin: 0; max-width: 54ch; font: 400 var(--fs-xl)/1.4 var(--font-display); letter-spacing: -0.01em; color: var(--text); text-wrap: balance; }

/* ---------- CTA band ---------- */
.ctaband { text-align: center; }
.ctaband .t-display { margin: 0; }
.ctaband .sub { margin: var(--sp-5) auto 0; max-width: 48ch; color: var(--text-secondary); }
.ctaband .acts { margin-top: var(--sp-10); display: flex; gap: var(--sp-5); justify-content: center; flex-wrap: wrap; }
.section--ink .ctaband .sub { color: var(--text-secondary); }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--border); padding-block: var(--sp-16) var(--sp-10); }
.footer__top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: var(--sp-8); align-items: start; }
.footer__brand .lockup { font-size: 22px; }
.footer__tag { margin: var(--sp-5) 0 0; max-width: 32ch; font: 400 var(--fs-sm)/1.5 var(--font-sans); color: var(--text-muted); }
.footer__col h4 { margin: 0 0 var(--sp-4); font: 500 var(--fs-meta)/1 var(--font-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); }
.footer__col a { display: block; padding: 6px 0; font: 400 var(--fs-sm)/1 var(--font-sans); color: var(--text-secondary); }
.footer__col a:hover { color: var(--text); text-decoration: none; }
.footer__bottom { margin-top: var(--sp-12); padding-top: var(--sp-6); border-top: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; gap: var(--sp-4); flex-wrap: wrap; }
.footer__legal { font: 400 var(--fs-meta)/1.5 var(--font-mono); letter-spacing: 0.02em; color: var(--text-muted); }

/* ---------- concept-graphic frame ---------- */
.cg { width: 100%; height: auto; display: block; }
.cg .ink { stroke: var(--text); }
.cg .hair { stroke: var(--border-strong); }
.cg .fillink { fill: var(--text); }
.cg .filllight { fill: var(--bg-raised); }
.cg .acc { stroke: var(--accent); }
.cg .accfill { fill: var(--accent); }
.cg .lbl { font: 500 11px/1 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; fill: var(--text-muted); }
.cg .lbl-ink { fill: var(--text); }

/* ---------- finalized diagram library (approved SVGs, wired as-is) ----------
   Inlined <svg class="dgm"> with NO per-svg <style> (those leak globally when
   many are inlined). Styling lives here once, routed through tokens so the
   diagrams follow the theme. Source hex → token:
     #2F7D6E → --accent · #C2C8CC → --border-strong ·
     #8A9198 → --text-muted · #FFFFFF on teal → --accent-contrast */
.dgm { display: block; width: 100%; height: auto; }
.dgm .h  { fill: none; stroke: var(--border-strong); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.dgm .t  { fill: none; stroke: var(--accent); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.dgm .tf { fill: var(--accent); }
.dgm .wd { stroke: var(--accent-contrast); stroke-width: 1.5; opacity: 0.85; }
.dgm .inv { fill: var(--accent-contrast); }
.dgm text { font-family: var(--font-mono); fill: var(--text-muted); letter-spacing: 0.12em; }
.dgm .lbl-tight { letter-spacing: 0.03em; }

/* ---------- ambient hero motion ----------
   The signature instrument, alive. Resting state is the full visible
   graphic; loops only add slow, calm life AROUND it — so a throttled
   tab or reduced-motion just shows the clean static ring. */
.os-ring .amb-spoke { stroke: var(--text); stroke-opacity: 0.12; }
.os-ring .amb-end { fill: var(--text); fill-opacity: 0.18; }
.os-ring .amb-flow { stroke: var(--accent); stroke-opacity: 0.5; stroke-dasharray: 5 15; }
.os-ring .amb-core-halo { fill: none; stroke: var(--accent); stroke-opacity: 0.28; }
.os-ring .amb-ping { fill: none; stroke: var(--accent); stroke-opacity: 0; }
.os-ring .amb-spokes, .os-ring .amb-rings, .os-ring .amb-core-halo, .os-ring .amb-ping { transform-box: view-box; transform-origin: 300px 300px; }

@media (prefers-reduced-motion: no-preference) {
  .os-ring .amb-spokes { animation: ambSpin 150s linear infinite; }
  .os-ring .amb-rings  { animation: ambBreathe 17s var(--ease-standard) infinite; }
  .os-ring .amb-flow   { animation: ambFlow 6.5s linear infinite; }
  .os-ring .amb-flow.f2 { animation-duration: 8.5s; }
  .os-ring .amb-flow.f3 { animation-duration: 7.5s; animation-direction: reverse; }
  .os-ring .amb-flow.f4 { animation-duration: 9.5s; }
  .os-ring .amb-core-halo { animation: ambHalo 5.5s var(--ease-standard) infinite; }
  .os-ring .amb-ping { animation: ambPing 7s var(--ease-standard) infinite; }
  .os-ring .amb-end.e2 { animation: ambTwinkle 6s var(--ease-standard) infinite 1.5s; }
  .os-ring .amb-end.e3 { animation: ambTwinkle 7.5s var(--ease-standard) infinite 0.6s; }
}
@keyframes ambSpin { to { transform: rotate(360deg); } }
@keyframes ambBreathe { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.014); } }
@keyframes ambFlow { to { stroke-dashoffset: -240; } }
@keyframes ambHalo { 0%, 100% { transform: scale(1); stroke-opacity: 0.22; } 50% { transform: scale(1.09); stroke-opacity: 0.42; } }
@keyframes ambPing { 0% { transform: scale(0.78); stroke-opacity: 0.45; } 70%, 100% { transform: scale(1.7); stroke-opacity: 0; } }
@keyframes ambTwinkle { 0%, 100% { fill-opacity: 0.14; } 50% { fill-opacity: 0.5; } }

/* ---------- ambient motion on schematic diagrams ----------
   The single teal signal gets a slow ping (shared heartbeat with the
   hero ring); the two larger diagrams add one calm supporting motion.
   Resting state (reduced-motion / throttled tab) is the clean static
   schematic — pings start invisible, breathe/flow sit at their base. */
.dgm .px-ping { fill: none; stroke: var(--accent); stroke-width: 1.5; stroke-opacity: 0; transform-box: fill-box; transform-origin: center; }
.dgm .px-breathe { transform-box: fill-box; transform-origin: center; }
@media (prefers-reduced-motion: no-preference) {
  .dgm .px-ping { animation: dgmPing 6.5s var(--ease-standard) infinite; }
  .dgm .px-flow { animation: dgmFlow 4.5s linear infinite; }
  .dgm .px-breathe { animation: dgmBreathe 7.5s var(--ease-standard) infinite; }
}
@keyframes dgmPing { 0% { transform: scale(0.7); stroke-opacity: 0.5; } 70%, 100% { transform: scale(2.3); stroke-opacity: 0; } }
@keyframes dgmFlow { to { stroke-dashoffset: -120; } }
@keyframes dgmBreathe { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.05); } }

/* ---------- scroll reveal ----------
   Resting state is VISIBLE. JS adds .anim to <html> (progressive
   enhancement), which arms the hidden start; IO adds .in to play.
   Transitions (not animations) so a backgrounded tab can never
   freeze an element invisible. Reduced-motion never arms. */
.anim .reveal { opacity: 0; transform: translateY(14px); transition: opacity var(--dur-4) var(--ease-standard), transform var(--dur-4) var(--ease-standard); }
.anim .reveal.in { opacity: 1; transform: none; }
.anim .reveal[data-d="1"] { transition-delay: 80ms; }
.anim .reveal[data-d="2"] { transition-delay: 160ms; }
.anim .reveal[data-d="3"] { transition-delay: 240ms; }

/* hero ring build-in — same arm/in pattern, staggered inside-out */
.anim .os-ring.arm [data-ring],
.anim .os-ring.arm [data-num] { opacity: 0; }
.anim .os-ring.arm [data-ring] { transform: scale(0.88); transition: opacity var(--dur-3) var(--ease-standard), transform var(--dur-3) var(--ease-standard); }
.anim .os-ring.arm [data-num] { transition: opacity var(--dur-2) var(--ease-standard); }
.anim .os-ring.in [data-ring], .anim .os-ring.in [data-num] { opacity: 1; transform: none; }
.os-ring [data-ring="0"] { transition-delay: 40ms; }
.os-ring [data-ring="1"] { transition-delay: 140ms; }
.os-ring [data-ring="2"] { transition-delay: 220ms; }
.os-ring [data-ring="3"] { transition-delay: 300ms; }
.os-ring [data-ring="4"] { transition-delay: 380ms; }
.os-ring [data-ring="5"] { transition-delay: 460ms; }
.os-ring [data-ring="6"] { transition-delay: 540ms; }
.os-ring [data-ring="7"] { transition-delay: 620ms; }
.os-ring [data-num] { transition-delay: 760ms; }

/* ---------- page header (interior pages) ---------- */
.pagehead { padding-block: clamp(3rem, 6vw, 6rem) clamp(2rem, 4vw, 3.5rem); }
.pagehead .t-display { margin: var(--sp-6) 0 0; max-width: 18ch; }
.pagehead .lede { margin: var(--sp-6) 0 0; max-width: 62ch; font-size: var(--fs-md); color: var(--text-secondary); }
/* interior pagehead with a schematic in a second column (Method, Contact) */
.pagehead__grid { display: grid; grid-template-columns: 1.04fr 0.96fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: center; }
.pagehead--art .t-display { max-width: 15ch; }
.pagehead--art .lede { max-width: 52ch; }
.pagehead__art { position: relative; width: 100%; display: flex; justify-content: center; }
.pagehead__art .dgm { width: 100%; max-width: 460px; }
/* honest-fork mini schematic inside the contact aside */
.honestfork { margin-top: var(--sp-8); padding-top: var(--sp-7); border-top: 1px solid var(--border); }
.honestfork .eyebrow-row { margin-bottom: var(--sp-5); }
.honestfork .dgm { width: 100%; max-width: 300px; }

/* ---------- onboarding sub-blocks ---------- */
.subblocks { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-8) var(--sp-10); margin-top: var(--sp-10); }
.subblock h4 { margin: 0 0 var(--sp-3); display: flex; align-items: baseline; gap: var(--sp-3); font: 500 var(--fs-meta)/1.3 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); }
.subblock h4 .k { color: var(--accent-text); }
.subblock p { margin: 0; color: var(--text-secondary); font-size: var(--fs-base); line-height: var(--lh-prose); max-width: 42ch; }
.subblock .step { font-weight: 600; color: var(--text); }

/* ---------- SmartX OS — 7-layer in-depth rows ---------- */
.os-rows { display: flex; flex-direction: column; border-top: 1px solid var(--border); margin-top: var(--sp-10); }
.os-row { display: grid; grid-template-columns: 3.2rem minmax(8rem, 12rem) 1fr; align-items: baseline; gap: var(--sp-5); padding: var(--sp-6) var(--sp-2); border-bottom: 1px solid var(--border); transition: background var(--dur-1) var(--ease-standard); }
.os-row:hover { background: color-mix(in srgb, var(--accent) 6%, transparent); }
.os-row .ix { font: 500 var(--fs-meta)/1 var(--font-mono); letter-spacing: 0.06em; color: var(--text-muted); }
.os-row .nm { font: 600 var(--fs-xl)/1 var(--font-display); letter-spacing: -0.01em; color: var(--accent-text); }
.os-row .ds { color: var(--text-secondary); font-size: var(--fs-md); line-height: 1.45; max-width: 52ch; }

/* ---------- proven-systems cards (3-up) ---------- */
.sys-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-5); margin-top: var(--sp-12); }
.sys-card { display: flex; flex-direction: column; border: 1px solid var(--border); border-radius: var(--r-2); background: var(--bg-raised); overflow: hidden; }
.sys-card .thumb { aspect-ratio: 16 / 10; border-bottom: 1px solid var(--border); background: var(--bg-sunken); }
.sys-card .thumb svg { width: 100%; height: 100%; display: block; }
.sys-card .body { padding: var(--sp-6); display: flex; flex-direction: column; gap: var(--sp-5); }
.sys-card h3 { margin: 0; font: 600 var(--fs-lg)/1.2 var(--font-display); letter-spacing: -0.01em; }
.sys-card .fields { display: flex; flex-direction: column; gap: var(--sp-4); }
.sys-card .field { display: block; }
.sys-card .field .k { display: block; margin-bottom: 4px; font: 500 var(--fs-meta)/1 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); }
.sys-card .field p { margin: 0; font-size: var(--fs-sm); line-height: 1.5; color: var(--text-secondary); }

/* ---------- custom-systems list (2-up, lighter) ---------- */
.custom-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-5); margin-top: var(--sp-12); }
.custom-card { display: grid; grid-template-columns: 88px 1fr; gap: var(--sp-5); align-items: center; border: 1px solid var(--border); border-radius: var(--r-2); background: var(--bg-raised); padding: var(--sp-5); }
.custom-card .thumb { width: 88px; height: 64px; border: 1px solid var(--border); border-radius: var(--r-1); background: var(--bg-sunken); flex: none; }
.custom-card .thumb svg { width: 100%; height: 100%; display: block; }
.custom-card h3 { margin: 0 0 var(--sp-2); font: 600 var(--fs-base)/1.2 var(--font-display); letter-spacing: -0.01em; }
.custom-card p { margin: 0; font-size: var(--fs-sm); line-height: 1.5; color: var(--text-secondary); }

/* ---------- discipline band ---------- */
.discipline { max-width: 24ch; }
.discipline-wrap { display: grid; grid-template-columns: 1fr 1.3fr; gap: clamp(2rem, 5vw, 5rem); align-items: start; }
.discipline-statement { font: 500 var(--fs-2xl)/1.32 var(--font-display); letter-spacing: -0.012em; color: var(--text); text-wrap: pretty; margin: 0; }
.discipline-statement em { font-style: normal; color: var(--accent-text); }
.section--ink .discipline-statement em, [data-theme="dark"] .discipline-statement em { color: var(--accent); }

/* ---------- method: 5-stage timeline ---------- */
.stages { margin-top: var(--sp-12); }
.stage { position: relative; padding-left: 84px; padding-bottom: var(--sp-12); }
.stage:last-child { padding-bottom: 0; }
.stage__num { position: absolute; left: 0; top: 0; width: 52px; height: 52px; display: flex; align-items: center; justify-content: center; border: 1px solid var(--border-strong); border-radius: var(--r-2); background: var(--bg-raised); font: 600 var(--fs-lg)/1 var(--font-display); color: var(--text); }
.stage::before { content: ""; position: absolute; left: 26px; top: 52px; bottom: 0; width: 1px; background: var(--border-strong); }
.stage:last-child::before { display: none; }
.stage__name { margin: 4px 0 0; font: 600 var(--fs-2xl)/1.1 var(--font-display); letter-spacing: -0.012em; }
.stage__what { margin: var(--sp-4) 0 0; max-width: 56ch; color: var(--text-secondary); font-size: var(--fs-md); line-height: var(--lh-prose); }
.artifact { display: flex; align-items: center; gap: var(--sp-5); margin-top: var(--sp-6); padding: var(--sp-4) var(--sp-5); border: 1px solid var(--border); border-radius: var(--r-2); background: var(--bg-raised); max-width: 52ch; }
.artifact .glyph { width: 44px; height: 44px; flex: none; }
.artifact .glyph svg { width: 100%; height: 100%; display: block; }
.artifact .k { display: block; font: 500 var(--fs-meta)/1 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 5px; }
.artifact .d { font-size: var(--fs-sm); line-height: 1.45; color: var(--text); }

/* ---------- method: path routes ---------- */
.routes { margin-top: var(--sp-10); border-top: 1px solid var(--border-strong); }
.route-head, .route { display: grid; grid-template-columns: minmax(9rem, 14rem) 1fr; gap: var(--sp-6); align-items: center; }
.route-head { padding: var(--sp-3) 0; }
.route { padding: var(--sp-6) 0; border-bottom: 1px solid var(--border); }
.route .who h3 { margin: 0; font: 600 var(--fs-base)/1.2 var(--font-display); letter-spacing: -0.01em; }
.route .who p { margin: var(--sp-2) 0 0; font: 400 var(--fs-sm)/1.4 var(--font-sans); color: var(--text-muted); }
.track { display: grid; grid-template-columns: repeat(5, 1fr); align-items: start; }
.track--head .stop { color: var(--text-muted); }
.stop { position: relative; display: flex; flex-direction: column; align-items: center; gap: var(--sp-3); padding-top: 2px; }
.stop .lab { font: 500 var(--fs-meta)/1 var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-muted); text-align: center; }
.stop .dot { width: 13px; height: 13px; border-radius: var(--r-pill); border: 1.5px solid var(--border-strong); background: var(--bg-raised); box-shadow: 0 0 0 4px var(--bg); }
.stop.on .dot { background: var(--text); border-color: var(--text); }
.stop.on--acc .dot { background: var(--accent); border-color: var(--accent); }
.track .stop:not(:last-child)::after { content: ""; position: absolute; top: 8px; left: 50%; width: 100%; height: 1.5px; background: var(--border-strong); z-index: 0; }
.track .stop.seg-on:not(:last-child)::after { background: var(--text); }
.track .stop.seg-acc:not(:last-child)::after { background: var(--accent); }
.track .stop .dot { position: relative; z-index: 1; }
.route-cap { margin-top: var(--sp-6); }

/* ---------- method: maintenance loop ---------- */
.loopwrap { display: grid; grid-template-columns: 1.3fr 0.7fr; gap: clamp(2rem, 5vw, 5rem); align-items: center; }
.loopwrap .loop-art { display: flex; justify-content: center; }
.loopwrap .loop-art svg { width: 100%; max-width: 240px; height: auto; }

/* ---------- contact ---------- */
/* primary: book a call band — the one teal signal on this view */
.bookcall { display: grid; grid-template-columns: 1fr auto; gap: clamp(1.75rem, 4vw, 4rem); align-items: center; padding: clamp(1.75rem, 3.5vw, 2.75rem) clamp(1.75rem, 3.5vw, 3rem); border: 1px solid var(--border-strong); border-radius: var(--r-2); background: var(--bg-raised); }
.bookcall__h { margin: 0; font: 600 var(--fs-2xl)/1.1 var(--font-display); letter-spacing: -0.012em; color: var(--text); }
.bookcall__p { margin: var(--sp-4) 0 0; max-width: 52ch; color: var(--text-secondary); font-size: var(--fs-md); line-height: var(--lh-prose); }
.bookcall__act { display: flex; flex-direction: column; align-items: flex-start; gap: var(--sp-4); }
.bookcall__cta { font-size: var(--fs-base); padding: 16px 26px; }
.bookcall__note { font: 500 var(--fs-meta)/1.4 var(--font-mono); letter-spacing: 0.06em; color: var(--text-muted); }
.form-eyebrow { margin-top: 0; }

.contact-grid { display: grid; grid-template-columns: 0.82fr 1.18fr; gap: clamp(2rem, 5vw, 5rem); align-items: start; margin-top: var(--sp-12); }
.nextsteps { display: flex; flex-direction: column; gap: var(--sp-6); }
.nextstep { display: grid; grid-template-columns: 2.25rem 1fr; gap: var(--sp-4); align-items: start; }
.nextstep .n { width: 2.25rem; height: 2.25rem; display: flex; align-items: center; justify-content: center; border: 1px solid var(--border-strong); border-radius: var(--r-2); font: 500 var(--fs-sm)/1 var(--font-mono); color: var(--accent-text); flex: none; }
.nextstep p { margin: 0; padding-top: 7px; color: var(--text-secondary); font-size: var(--fs-base); line-height: 1.5; }
.nextstep p strong { color: var(--text); font-weight: 600; }
.direct { margin-top: var(--sp-10); padding-top: var(--sp-6); border-top: 1px solid var(--border); }
.direct .k { display: block; margin-bottom: var(--sp-3); }
.direct a { font: 500 var(--fs-md)/1 var(--font-mono); letter-spacing: 0.01em; color: var(--text); }
.direct a:hover { color: var(--accent-text); text-decoration: none; }

.form-card { border: 1px solid var(--border); border-radius: var(--r-2); background: var(--bg-raised); padding: clamp(1.5rem, 3vw, 2.5rem); box-shadow: var(--shadow-1); }
.field { margin-bottom: var(--sp-6); }
.field:last-of-type { margin-bottom: var(--sp-8); }
.field label { display: flex; align-items: baseline; justify-content: space-between; gap: var(--sp-3); margin-bottom: var(--sp-3); font: 500 var(--fs-meta)/1 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-secondary); }
.field label .opt { color: var(--text-muted); }
.input, .textarea { width: 100%; font: 400 var(--fs-base)/1.5 var(--font-sans); color: var(--text); background: var(--bg); border: 1px solid var(--border-strong); border-radius: var(--r-2); padding: 13px 14px; transition: border-color var(--dur-1) var(--ease-standard), box-shadow var(--dur-1) var(--ease-standard); }
.input::placeholder, .textarea::placeholder { color: var(--text-muted); }
.input:hover, .textarea:hover { border-color: var(--c-ink-300); }
.input:focus, .textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-tint); }
.textarea { min-height: 132px; resize: vertical; }
.field.invalid .input, .field.invalid .textarea { border-color: var(--danger); }
.field.invalid .input:focus, .field.invalid .textarea:focus { box-shadow: 0 0 0 3px var(--c-red-100); }
.field-error { display: none; margin-top: var(--sp-2); font: 400 var(--fs-sm)/1.3 var(--font-sans); color: var(--danger-text); }
.field.invalid .field-error { display: block; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-foot { display: flex; align-items: center; gap: var(--sp-5); flex-wrap: wrap; }
.form-submit { min-width: 0; }
.form-submit[disabled] { opacity: 0.6; cursor: progress; }
.form-note { font: 400 var(--fs-sm)/1.4 var(--font-sans); color: var(--text-muted); }

.form-success { display: none; flex-direction: column; align-items: flex-start; gap: var(--sp-5); }
.form-card.is-success .form-body { display: none; }
.form-card.is-success .form-success { display: flex; }
.form-success .check { width: 52px; height: 52px; border-radius: var(--r-pill); background: var(--accent-tint); display: flex; align-items: center; justify-content: center; }
.form-success .check svg { width: 26px; height: 26px; display: block; }
.form-success h3 { margin: 0; font: 600 var(--fs-xl)/1.2 var(--font-display); letter-spacing: -0.01em; color: var(--text); }
.form-success p { margin: 0; color: var(--text-secondary); max-width: 44ch; }
.reassure { margin-top: var(--sp-16); padding-top: var(--sp-8); border-top: 1px solid var(--border); max-width: 60ch; }
.reassure p { margin: 0; font-size: var(--fs-md); color: var(--text-secondary); }
.reassure p strong { color: var(--text); font-weight: 600; }

/* ---------- responsive ---------- */
@media (max-width: 1000px) {
  .hero__grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero__art { order: 0; max-width: 380px; margin-inline: auto; }
  .flagship__grid, .method-band { grid-template-columns: 1fr; gap: 2.5rem; }
  .flagship--rev .flagship__art { order: 0; }
  .sys-grid { grid-template-columns: 1fr; max-width: 30rem; }
  .discipline-wrap { grid-template-columns: 1fr; gap: var(--sp-8); }
  .discipline { max-width: none; }
  .loopwrap { grid-template-columns: 1fr; gap: var(--sp-8); }
  .loopwrap .loop-art { order: -1; justify-content: flex-start; }
  .contact-grid { grid-template-columns: 1fr; gap: var(--sp-10); }
}
@media (max-width: 820px) {
  .nav__links, .nav__cta .btn { display: none; }
  .nav__burger { display: inline-flex; }
  .proof__grid { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr; gap: var(--sp-10); }
  .os-legend { grid-template-columns: 1fr 1fr; }
  .subblocks { grid-template-columns: 1fr; gap: var(--sp-8); }
  .custom-grid { grid-template-columns: 1fr; }
  .os-row { grid-template-columns: 2.4rem 1fr; row-gap: var(--sp-2); }
  .os-row .nm { grid-column: 2; }
  .os-row .ds { grid-column: 2; }
}
@media (max-width: 720px) {
  .bookcall { grid-template-columns: 1fr; gap: var(--sp-6); }
  .bookcall__act { align-items: stretch; }
  .bookcall__cta { justify-content: center; }
}
@media (max-width: 640px) {
  .os-legend { grid-template-columns: 1fr; }
  .hero__cta { gap: var(--sp-4); }
  .route-head, .route { grid-template-columns: 1fr; gap: var(--sp-4); }
  .route-head { display: none; }
  .track .stop .lab { font-size: 9px; letter-spacing: 0.02em; }
}

/* interior pagehead schematic — stack under copy on narrow viewports */
@media (max-width: 1000px) {
  .pagehead__grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .pagehead--art .t-display, .pagehead--art .lede { max-width: 36ch; }
  .pagehead__art { order: 1; max-width: 420px; margin-inline: auto; }
}