/* ProLine — Gate 1 static build
   Hand-authored. No framework, no build step. Section-scoped so each block
   ports to WordPress independently. */

/* Font faces live in fonts.css so the editor and front end share one source. */

/* ============================ RESET ============================ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--text-light);
  background: var(--navy-900);
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, p, figure, blockquote { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
img { height: auto; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; }
:target { scroll-margin-top: 0; }
/* Every destination owns the viewport behind the floating header. Content
   clears the pill; the previous section never remains visible around it. */
:is(.section, .footer):target {
  padding-top: max(var(--section-y, var(--s-12)), calc(var(--header-h) + var(--s-3)));
}

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

/* ============================ A11Y ============================ */
:where(a, button, [tabindex]):focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 3px;
  border-radius: 4px;
}
.skip {
  position: absolute; left: var(--s-2); top: -100px; z-index: 200;
  padding: var(--s-2) var(--s-3); border-radius: var(--r-control);
  background: var(--cyan-400); color: var(--ink-950); font-weight: 600;
  transition: top var(--d-1) var(--e-out);
}
.skip:focus { top: var(--s-2); }
.sr { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

/* ============================ PRIMITIVES ============================ */
.shell { width: 100%; max-width: var(--content-max); margin-inline: auto; padding-inline: var(--margin); }
.section { position: relative; padding-block: var(--section-y); }
.section--dark { background: var(--field-dark); color: var(--text-light); }
.section--light { background: var(--field-light); color: var(--text-dark); }

.eyebrow {
  display: inline-flex; align-items: center; gap: var(--s-1);
  font-family: var(--font-mono); font-size: var(--fs-label);
  letter-spacing: var(--tr-label); text-transform: uppercase;
  color: var(--cyan-400);
}
.eyebrow::before { content: ""; width: 18px; height: 1px; background: currentColor; }
.section--light .eyebrow { color: var(--blue-500); }

.h2 { font-family: var(--font-display); font-weight: 500; font-size: var(--fs-h2); line-height: var(--lh-snug); letter-spacing: -0.02em; }
.h3 { font-family: var(--font-display); font-weight: 500; font-size: var(--fs-h3); line-height: var(--lh-snug); letter-spacing: -0.01em; }
.lede { font-size: var(--fs-lede); color: var(--text-muted); max-width: var(--measure); }
.section--light .lede { color: var(--text-dim); }
.mono { font-family: var(--font-mono); font-size: var(--fs-label); letter-spacing: var(--tr-label); text-transform: uppercase; }

/* Aperture edge — the recurring handoff detail. Ticks stay sparse. */
.aperture-edge { position: relative; border-radius: var(--r-aperture) var(--r-aperture) 0 0; margin-top: calc(var(--r-aperture) * -1); }
.aperture-edge::before {
  content: ""; position: absolute; inset-inline: 12%; top: 0; height: 1px;
  background: linear-gradient(90deg, transparent, currentColor 22%, currentColor 78%, transparent);
  opacity: .16;
}
.ticks { position: absolute; top: 0; inset-inline: 12%; height: 10px; display: flex; justify-content: space-between; opacity: .28; pointer-events: none; }
.ticks i { width: 1px; height: 100%; background: currentColor; }
.ticks i:nth-child(2n) { height: 5px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s-1);
  min-height: 48px; padding: 0 var(--s-4);
  border-radius: var(--r-pill); font-weight: 600; font-size: var(--fs-body);
  text-decoration: none; white-space: nowrap;
  transition: transform var(--d-1) var(--e-out), box-shadow var(--d-2) var(--e-out), background-color var(--d-1) var(--e-out);
}
.btn:hover { transform: translateY(-1px); }
.btn--primary {
  position: relative; isolation: isolate; overflow: hidden;
  border: 1px solid rgb(34 213 245 / 38%);
  background:
    linear-gradient(180deg, rgb(255 255 255 / 13%), transparent 46%),
    var(--cta-fill);
  color: var(--white-100);
  box-shadow:
    inset 0 1px 0 rgb(255 255 255 / 24%),
    inset 0 -1px 0 rgb(34 213 245 / 18%),
    0 9px 24px rgb(11 59 159 / 28%);
}
.btn--primary::after {
  position: absolute; z-index: 0; top: -70%; left: -42%;
  width: 28%; height: 240%; pointer-events: none;
  background: linear-gradient(90deg, transparent, rgb(234 253 255 / 62%), transparent);
  transform: rotate(14deg) translateX(-220%);
  transition: transform 560ms var(--e-out);
  content: "";
}
.btn--primary:hover, .btn--primary:focus-visible {
  transform: translateY(-2px);
  border-color: rgb(34 213 245 / 62%);
  box-shadow:
    inset 0 1px 0 rgb(255 255 255 / 32%),
    inset 0 -1px 0 rgb(34 213 245 / 24%),
    0 0 0 1px rgb(34 213 245 / 16%),
    0 0 22px rgb(34 213 245 / 20%),
    0 14px 34px rgb(11 59 159 / 38%);
}
.btn--primary:hover::after, .btn--primary:focus-visible::after { transform: rotate(14deg) translateX(620%); }
.btn--primary:active { transform: translateY(0) scale(.99); }
.btn--ghost { box-shadow: inset 0 0 0 1px var(--line-dark); color: var(--text-light); }
.section--light .btn--ghost, .btn--ghost.on-light { box-shadow: inset 0 0 0 1px var(--line-light); color: var(--text-dark); }
.btn .arrow { transition: transform var(--d-1) var(--e-out); }
.btn:hover .arrow { transform: translateX(3px); }

@media (prefers-reduced-motion: reduce) {
  .btn--primary::after { display: none; }
}

/* ============================ SPINE RAIL (improvement 4.1) ============================ */
.spine {
  position: fixed; top: 50%; translate: 0 -50%; z-index: 40;
  /* sits just outside the content box on wide displays instead of being
     stranded at the far screen edge; pinned to 0 when there is no gutter */
  left: max(0px, calc((100% - var(--content-max)) / 2 - var(--rail-w)));
  width: var(--rail-w);
  font-family: var(--font-mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase;
}
.spine ol { display: grid; }
.spine a {
  display: grid; grid-template-columns: 22px 1fr; align-items: center;
  min-width: 44px; min-height: 44px; padding-left: var(--s-3); text-decoration: none;
  color: var(--text-muted); opacity: .5;
  box-shadow: inset 1px 0 currentColor;
  transition: opacity var(--d-2) var(--e-out), color var(--d-2) var(--e-out);
}
.spine a span:last-child { opacity: 0; translate: -4px 0; transition: opacity var(--d-2) var(--e-out), translate var(--d-2) var(--e-out); }
.spine:hover a span:last-child { opacity: .75; translate: 0 0; }
.spine a:hover, .spine a:focus-visible { opacity: 1; }
.spine a[aria-current] { color: var(--cyan-400); opacity: 1; box-shadow: inset 2px 0 currentColor; }
.spine a[aria-current] span:last-child { opacity: 1; translate: 0 0; }
body[data-surface="light"] .spine a { color: var(--text-dim); }
body[data-surface="light"] .spine a[aria-current] { color: var(--blue-500); }

/* Labels need real gutter. Below 1600px the rail is index-only. */
@media (max-width: 1599px) {
  .spine { width: 44px; }
  .spine a { grid-template-columns: 22px; padding-left: var(--s-2); }
  .spine a span:last-child, .spine:hover a span:last-child { display: none; }
}
/* Below 1280px there is no gutter that clears the content, and no 44px
   target that does not sit over text. The header menu carries wayfinding. */
@media (max-width: 1279px) { .spine { display: none; } }

/* ============================ HEADER ============================ */
.header { position: fixed; inset-inline: 0; top: var(--s-2); z-index: 60; padding-inline: var(--margin); }
.header__bar {
  max-width: var(--content-max); margin-inline: auto;
  display: flex; align-items: center; gap: var(--s-3);
  min-height: var(--header-h); padding: var(--s-1) var(--s-1) var(--s-1) var(--s-3);
  border-radius: var(--r-pill);
  background: rgb(6 11 20 / 88%); /* must stay legible where the pill crosses the light world */
  box-shadow: inset 0 0 0 1px var(--line-dark), var(--depth-2);
  backdrop-filter: blur(18px) saturate(140%);
}
.header__brand { display: flex; align-items: center; gap: var(--s-1); min-height: 44px; text-decoration: none; }
.header__brand img { width: 26px; height: 29px; }
.header__brand b { font-family: var(--font-display); font-weight: 700; letter-spacing: -0.01em; }
.header__nav { display: flex; gap: var(--s-3); margin-inline: auto; }
.header__nav a { position: relative; display: inline-flex; align-items: center; justify-content: center; min-width: 44px; min-height: 44px; font-size: var(--fs-small); text-decoration: none; color: var(--text-muted); transition: color var(--d-1) var(--e-out); }
.header__nav a:hover { color: var(--text-light); }
.header__nav a::after { content: ""; position: absolute; left: 0; bottom: 2px; width: 0; height: 1px; background: var(--cyan-400); transition: width var(--d-2) var(--e-out); }
.header__nav a:hover::after { width: 100%; }
.header .btn { min-height: 44px; padding-inline: var(--s-3); font-size: var(--fs-small); }
.header__toggle { display: none; width: 44px; height: 44px; place-items: center; border-radius: var(--r-pill); box-shadow: inset 0 0 0 1px var(--line-dark); }
.header__toggle i { position: relative; width: 17px; height: 1.5px; background: currentColor; transition: background var(--d-1) var(--e-out); }
.header__toggle i::before, .header__toggle i::after { content: ""; position: absolute; left: 0; width: 17px; height: 1.5px; background: currentColor; transition: translate var(--d-2) var(--e-out), rotate var(--d-2) var(--e-out); }
.header__toggle i::before { translate: 0 -5px; }
.header__toggle i::after { translate: 0 5px; }
[aria-expanded="true"] i { background: transparent; }
[aria-expanded="true"] i::before { translate: 0 0; rotate: 45deg; }
[aria-expanded="true"] i::after { translate: 0 0; rotate: -45deg; }

/* Mobile sheet — an explicit menu, not wrapped desktop links */
.sheet {
  position: fixed; inset: 0; z-index: 55;
  display: grid; align-content: center; gap: var(--s-2);
  padding: var(--s-16) var(--margin) var(--s-10);
  background: var(--field-dark);
}
.sheet[hidden] { display: none; }
.sheet a { display: flex; align-items: center; justify-content: space-between; min-height: 56px; padding-block: var(--s-1); font-family: var(--font-display); font-size: 1.5rem; text-decoration: none; border-bottom: 1px solid var(--line-dark); }
.sheet a span { font-family: var(--font-mono); font-size: var(--fs-label); color: var(--cyan-400); }
.sheet .btn { margin-top: var(--s-4); }

/* ============================ HERO ============================ */
.hero { position: relative; min-height: 100svh; padding-block: calc(var(--header-h) + var(--s-10)) var(--s-10); background: var(--field-dark); overflow: hidden; display: flex; align-items: center; }
.hero__world { position: absolute; inset: 0; pointer-events: none; }
.hero__light {
  position: absolute; inset-block: 0; left: var(--seam); right: 0;
  background: var(--field-light);
  border-radius: var(--r-aperture) 0 0 var(--r-aperture);
}
/* positioned against .hero__light, so the seam rides its leading edge */
.hero__seam { position: absolute; inset-block: 6%; left: -.5px; width: 1px; background: linear-gradient(180deg, transparent, rgb(34 213 245 / 72%) 28%, rgb(221 251 255 / 86%) 50%, rgb(34 213 245 / 72%) 72%, transparent); box-shadow: 0 0 18px 1px rgb(34 213 245 / 32%); }
.hero__constellation { position: absolute; inset-block: 0; left: 0; width: var(--seam); height: 100%; opacity: .5; }
.hero__constellation.is-mobile { display: none; }

.hero__grid { position: relative; z-index: 2; display: grid; /* percentage of the grid's own content box — --seam resolves against the
     viewport and must not be reused here */
  grid-template-columns: calc(52% - var(--margin)) 1fr; gap: var(--s-8); width: 100%; max-width: var(--content-max); margin-inline: auto; padding-inline: var(--margin); align-items: center; }
.hero__logo { position: relative; width: min(300px, 62%); margin-bottom: var(--s-5); }
.hero__signal { position: absolute; inset: 0; overflow: visible; }
.hero__signal path { stroke: var(--cyan-400); stroke-width: 3; fill: none; stroke-linecap: round; filter: drop-shadow(0 0 6px rgb(34 213 245 / 70%)); }
.promise { margin-top: var(--s-3); font-family: var(--font-display); font-weight: 500; font-size: var(--fs-display); line-height: var(--lh-tight); letter-spacing: -0.03em; text-wrap: balance; }
.promise em { font-style: normal; color: var(--cyan-400); }
.hero__lede { margin-top: var(--s-3); max-width: 46ch; }
.hero__meta { display: flex; flex-wrap: wrap; gap: var(--s-1) var(--s-3); margin-top: var(--s-5); }
.hero__meta li { display: flex; align-items: center; gap: 6px; font-family: var(--font-mono); font-size: var(--fs-label); letter-spacing: var(--tr-label); text-transform: uppercase; color: var(--text-muted); }
.hero__meta i { width: 5px; height: 5px; border-radius: 50%; background: var(--cyan-400); }

.hero__clarity { color: var(--text-dark); padding-left: var(--s-6); }
.hero__statement { font-family: var(--font-display); font-weight: 500; font-size: var(--fs-statement); line-height: var(--lh-snug); letter-spacing: -0.02em; text-wrap: balance; }
.hero__statement em { font-style: italic; color: var(--blue-500); }
.hero__sub { margin-top: var(--s-2); max-width: 40ch; color: var(--text-dim); }
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--s-2); margin-top: var(--s-5); }
.hero__card { position: relative; margin-top: var(--s-6); padding: var(--s-3); border-radius: var(--r-card); background: rgb(255 255 255 / 70%); box-shadow: inset 0 0 0 1px var(--line-light), var(--depth-1); max-width: 380px; }
.hero__card header { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--s-2); font-family: var(--font-mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-dim); }
.hero__card b { color: var(--blue-500); }

/* ============================ WHY ============================ */
.why__top { display: grid; gap: var(--s-3); max-width: 72ch; }
.divider { display: flex; align-items: center; gap: var(--s-2); margin-block: var(--rhythm-md); color: var(--text-dim); }
.divider::before, .divider::after { content: ""; height: 1px; background: var(--line-light); }
.divider::before { width: 6px; border-radius: 50%; height: 6px; background: var(--blue-500); flex: none; }
.divider::after { flex: 1; }
.why__statement { display: grid; grid-template-columns: 3fr 9fr; gap: var(--s-8); align-items: start; }
.why__statement blockquote { font-family: var(--font-display); font-weight: 500; font-size: var(--fs-statement); line-height: var(--lh-snug); letter-spacing: -0.02em; text-wrap: balance; }
.why__benefits { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-6); margin-top: var(--rhythm-lg); }
.why__benefits li { display: grid; gap: var(--s-2); padding-top: var(--s-3); border-top: 1px solid var(--line-light); }
.why__benefits .idx { font-family: var(--font-mono); font-size: var(--fs-label); color: var(--blue-500); letter-spacing: .1em; }
.why__benefits p { color: var(--text-dim); }

/* ============================ PROOF ============================ */
.proof__head { display: grid; gap: var(--s-3); max-width: 68ch; margin-bottom: var(--s-8); }
.proof__body { display: grid; grid-template-columns: 5fr 7fr; gap: var(--s-8); align-items: start; }
.tabs { display: grid; gap: var(--s-1); }
.tab {
  display: grid; grid-template-columns: auto 1fr; align-items: center; gap: var(--s-2);
  min-height: 56px; padding: var(--s-2) var(--s-3); text-align: left;
  border-radius: var(--r-control); color: var(--text-muted);
  box-shadow: inset 0 0 0 1px transparent;
  transition: background var(--d-2) var(--e-out), color var(--d-2) var(--e-out), box-shadow var(--d-2) var(--e-out);
}
.tab .n { font-family: var(--font-mono); font-size: var(--fs-label); opacity: .7; }
.tab .t { font-family: var(--font-display); font-size: 1.0625rem; }
.tab:hover { color: var(--text-light); background: rgb(255 255 255 / 4%); }
.tab[aria-selected="true"] { color: var(--text-light); background: rgb(255 255 255 / 6%); box-shadow: inset 0 0 0 1px rgb(34 213 245 / 34%); }
.tab[aria-selected="true"] .n { color: var(--cyan-400); opacity: 1; }
.proof__note { margin-top: var(--s-4); padding-top: var(--s-3); border-top: 1px solid var(--line-dark); font-size: var(--fs-small); color: var(--text-muted); }

.instrument { position: relative; padding: var(--s-4); border-radius: var(--r-card); background: rgb(255 255 255 / 4%); box-shadow: inset 0 0 0 1px var(--line-dark); }
.instrument__meta { display: flex; flex-wrap: wrap; gap: var(--s-1) var(--s-3); margin-bottom: var(--s-3); font-family: var(--font-mono); font-size: var(--fs-label); letter-spacing: .1em; text-transform: uppercase; color: var(--text-muted); }
.instrument svg { width: 100%; height: auto; }
.instrument .axis { stroke: rgb(255 255 255 / 14%); stroke-width: 1; }
.instrument .base { stroke: rgb(145 160 181 / 34%); stroke-width: 1.6; fill: none; }
.instrument .trace { stroke: var(--cyan-400); stroke-width: 2.4; fill: none; stroke-linecap: round; stroke-linejoin: round; filter: drop-shadow(0 0 6px rgb(34 213 245 / 45%)); }
.instrument .node { fill: var(--cyan-400); }
.instrument .band { fill: rgb(23 95 234 / 16%); }
.instrument [data-state] { display: none; }
.instrument [data-state].is-active { display: block; }
.instrument__caption { margin-top: var(--s-3); font-size: var(--fs-small); color: var(--text-muted); }

/* ============================ CAPABILITIES ============================ */
.cap__head { display: grid; gap: var(--s-3); max-width: 68ch; margin-bottom: var(--s-8); }
.cap__bus { position: relative; margin-bottom: var(--s-6); }
.cap__line { position: absolute; left: 0; right: 0; top: 26px; height: 1px; background: var(--line-light); }
.cap__stations { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gutter); }
.station { display: grid; gap: var(--s-2); justify-items: start; padding-top: var(--s-6); text-align: left; color: var(--text-dim); transition: color var(--d-2) var(--e-out); }
.station::before {
  content: ""; position: absolute; top: 20px; width: 13px; height: 13px; border-radius: 50%;
  background: var(--white-100); box-shadow: inset 0 0 0 1.5px var(--text-dim);
  transition: box-shadow var(--d-2) var(--e-out), scale var(--d-2) var(--e-out);
}
.station[aria-selected="true"] { color: var(--text-dark); }
.station[aria-selected="true"]::before { box-shadow: inset 0 0 0 4px var(--blue-500), 0 0 0 5px rgb(34 213 245 / 20%); scale: 1.15; }
.station .n { font-family: var(--font-mono); font-size: var(--fs-label); letter-spacing: .1em; color: var(--blue-500); }
.station .t { font-family: var(--font-display); font-size: var(--fs-h3); line-height: var(--lh-snug); }
.cap__panel { display: grid; grid-template-columns: 7fr 5fr; gap: var(--s-8); padding: var(--s-6); border-radius: var(--r-card); background: rgb(255 255 255 / 68%); box-shadow: inset 0 0 0 1px var(--line-light), var(--depth-1); }
.cap__panel[hidden] { display: none; }
.cap__panel h3 { margin-bottom: var(--s-2); }
.cap__panel p { color: var(--text-dim); max-width: var(--measure); }
.cap__list { display: grid; gap: var(--s-1); margin-top: var(--s-3); }
.cap__list li { position: relative; padding-left: var(--s-3); color: var(--text-dim); font-size: var(--fs-small); }
.cap__list li::before { content: ""; position: absolute; left: 0; top: .68em; width: 6px; height: 1px; background: var(--blue-500); }
.cap__side { display: grid; gap: var(--s-2); align-content: start; padding-left: var(--s-4); border-left: 1px solid var(--line-light); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chips span { padding: 5px var(--s-1); border-radius: 6px; font-family: var(--font-mono); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; color: var(--text-dim); box-shadow: inset 0 0 0 1px var(--line-light); }

/* ============================ TECHNOLOGY ============================ */
.tech__head { display: flex; flex-wrap: wrap; gap: var(--s-3); align-items: end; justify-content: space-between; margin-bottom: var(--s-8); }
.tech__flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--gutter); }
.tech__group { display: grid; gap: var(--s-2); align-content: start; padding-top: var(--s-3); border-top: 1px solid var(--line-dark); }
.tech__group h3 { display: flex; align-items: center; gap: var(--s-1); font-family: var(--font-mono); font-size: var(--fs-label); letter-spacing: var(--tr-label); text-transform: uppercase; font-weight: 500; color: var(--cyan-400); }
.tech__group ul { display: grid; gap: 6px; }
.tech__group li { font-size: var(--fs-small); color: var(--text-muted); }
.tech__note { margin-top: var(--s-6); font-size: var(--fs-small); color: var(--text-muted); max-width: var(--measure); }

/* ============================ METHOD ============================ */
.method__head { display: grid; gap: var(--s-3); max-width: 68ch; margin-bottom: var(--rhythm-md); }
.method__path { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gutter); }
.method__path::before { content: ""; position: absolute; left: 6%; right: 6%; top: 7px; height: 1px; background: linear-gradient(90deg, var(--blue-500), var(--cyan-400)); opacity: .45; }
.step { position: relative; display: grid; gap: var(--s-2); align-content: start; padding-top: var(--s-6); }
.step::before { content: ""; position: absolute; top: 1px; left: 0; width: 13px; height: 13px; border-radius: 50%; background: var(--white-100); box-shadow: inset 0 0 0 3px var(--blue-500); }
.step .n { font-family: var(--font-mono); font-size: var(--fs-label); letter-spacing: .1em; color: var(--blue-500); }
.step p { color: var(--text-dim); font-size: var(--fs-small); }

/* ============================ CONSULT ============================ */
.consult { background: var(--field-cta); }
.consult__inner { display: grid; grid-template-columns: 7fr 5fr; gap: var(--s-10); align-items: center; }
.consult h2 { margin-block: var(--s-3) var(--s-3); }
.consult__actions { display: flex; flex-wrap: wrap; gap: var(--s-2); margin-top: var(--s-5); }
.consult__list { display: grid; gap: var(--s-2); padding: var(--s-4); border-radius: var(--r-card); background: rgb(255 255 255 / 5%); box-shadow: inset 0 0 0 1px var(--line-dark); }
.consult__list li { display: grid; grid-template-columns: auto 1fr; gap: var(--s-2); align-items: start; font-size: var(--fs-small); color: var(--text-muted); }
.consult__list svg { width: 15px; height: 15px; margin-top: 4px; flex: none; stroke: var(--cyan-400); stroke-width: 2; fill: none; }

/* ============================ FOOTER ============================ */
.footer {
  min-height: 100svh;
  display: grid;
  align-content: center;
  background: var(--ink-950);
  padding-block: var(--s-12) var(--s-6);
}
.footer__grid { display: grid; grid-template-columns: 4fr 3fr 5fr; gap: var(--s-8); }
.footer h2 { margin-block: var(--s-3) var(--s-2); }
.footer__cols { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--s-6); }
.footer__cols h3 { margin-bottom: var(--s-2); font-family: var(--font-mono); font-size: var(--fs-label); letter-spacing: var(--tr-label); text-transform: uppercase; font-weight: 500; color: var(--text-muted); }
.footer__cols a { display: flex; align-items: center; min-height: 44px; font-size: var(--fs-small); text-decoration: none; color: var(--text-muted); transition: color var(--d-1) var(--e-out); }
.footer__cols a:hover { color: var(--cyan-400); }
.contact { display: grid; gap: var(--s-3); }
.contact dt { font-family: var(--font-mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-muted); }
.contact dd { margin: 4px 0 0; font-size: var(--fs-small); }
.verify { display: inline-block; margin-left: var(--s-1); padding: 3px 6px; border-radius: 5px; font-family: var(--font-mono); font-size: 9px; letter-spacing: .08em; text-transform: uppercase; color: var(--signal); background: rgb(255 182 92 / 12%); box-shadow: inset 0 0 0 1px rgb(255 182 92 / 30%); }
.footer__base { display: flex; flex-wrap: wrap; gap: var(--s-2) var(--s-4); justify-content: space-between; margin-top: var(--s-10); padding-top: var(--s-4); border-top: 1px solid var(--line-dark); font-size: var(--fs-small); color: var(--text-muted); }

/* ============================ SPINE REVEAL ============================ */
/* Scoped to .js so the page is complete when scripting is unavailable. */
.js .reveal { opacity: 0; translate: 0 14px; transition: opacity var(--d-3) var(--e-out), translate var(--d-3) var(--e-out); }
.js .reveal.is-in { opacity: 1; translate: 0 0; }
@media (prefers-reduced-motion: reduce) { .js .reveal { opacity: 1; translate: 0 0; } }

/* ============================ RESPONSIVE ============================ */
@media (max-width: 1279px) {
  .hero__grid { gap: var(--s-6); }
  .hero__clarity { padding-left: var(--s-4); }
  .cap__panel { grid-template-columns: 1fr; gap: var(--s-4); }
  .cap__side { padding-left: 0; padding-top: var(--s-3); border-left: 0; border-top: 1px solid var(--line-light); }
}

/* Short landscape viewports (1280x720, 1024x768): the hero has to hold the
   promise, the lede, the actions and the card above the fold. Compress the
   vertical rhythm and the logo — never the headline. */
@media (min-width: 901px) and (max-height: 800px) {
  .hero { padding-block: calc(var(--header-h) + var(--s-3)) var(--s-4); }
  .hero__logo { width: min(230px, 46%); margin-bottom: var(--s-2); }
  .promise { margin-top: var(--s-2); }
  .hero__lede { margin-top: var(--s-2); }
  .hero__meta { margin-top: var(--s-3); }
  .hero__sub { margin-top: var(--s-2); }
  .hero__actions { margin-top: var(--s-3); }
  .hero__card { margin-top: var(--s-3); padding: var(--s-2); }
}

/* 14-inch Windows laptops at 150% scaling commonly expose roughly 1280x586
   CSS px after browser chrome and the taskbar. */
@media (min-width: 901px) and (max-height: 640px) {
  :root {
    --header-h: 60px;
    --section-y: 56px;
    --rhythm-md: 28px;
    --rhythm-lg: 32px;
  }
  .header { top: var(--s-1); }
  .hero {
    align-items: flex-start;
    padding-block: calc(var(--header-h) + var(--s-3)) var(--s-2);
  }
  .hero__grid { align-items: start; }
  .hero__logo { width: min(170px, 38%); margin-bottom: var(--s-1); }
}

@media (max-width: 1023px) {
  .header__nav { display: none; }
  .header .btn { display: none; }
  .header__toggle { display: grid; margin-left: auto; }
  .why__statement { grid-template-columns: 1fr; gap: var(--s-3); }
  .proof__body { grid-template-columns: 1fr; }
  .tabs { grid-template-columns: repeat(3, 1fr); grid-auto-flow: column; }
  .tech__flow { grid-template-columns: repeat(3, 1fr); row-gap: var(--s-6); }
  .consult__inner { grid-template-columns: 1fr; gap: var(--s-6); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .contact { grid-column: 1 / -1; grid-template-columns: repeat(3, 1fr); }
}

/* Portrait: the seam turns horizontal and the light world becomes the clarity
   block itself, so reading order stays promise -> explanation -> CTA. */
@media (max-width: 900px) {
  .hero { display: block; min-height: 0; padding-block: calc(var(--header-h) + var(--s-8)) 0; }
  .hero__light { display: none; }
  .hero__constellation { display: none; }
  .hero__constellation.is-mobile { display: block; width: 100%; height: 62%; inset-block: 0 auto; }
  .hero__grid { display: block; padding-inline: 0; }
  .hero__left { padding-inline: var(--margin); }
  .hero__clarity {
    position: relative; z-index: 2;
    margin-top: var(--rhythm-lg); padding: var(--rhythm-md) var(--margin) var(--s-10);
    background: var(--field-light);
    border-radius: var(--r-aperture) var(--r-aperture) 0 0;
  }
  .hero__clarity::before {
    content: ""; position: absolute; inset: 0 12% auto; height: 2px;
    background: linear-gradient(90deg, transparent, var(--cyan-400) 30%, var(--cyan-400) 70%, transparent);
    box-shadow: 0 0 20px 1px rgb(34 213 245 / 45%);
  }
  .hero__card { max-width: none; }
  .why__benefits { grid-template-columns: 1fr; gap: var(--s-5); }
  .cap__stations { grid-template-columns: repeat(2, 1fr); row-gap: var(--s-5); }
  .cap__line { display: none; }
  .method__path { grid-template-columns: 1fr; gap: var(--s-5); }
  .method__path::before { left: 6px; right: auto; top: 6%; bottom: 6%; width: 1px; height: auto; background: linear-gradient(180deg, var(--blue-500), var(--cyan-400)); }
  .step { padding-top: 0; padding-left: var(--s-5); }
  .step::before { top: 5px; }
}

@media (max-width: 767px) {
  .tabs { grid-template-columns: 1fr; grid-auto-flow: row; }
  .tech__flow { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .contact { grid-template-columns: 1fr; }
  .btn { width: 100%; }
  .hero__actions .btn, .consult__actions .btn { width: 100%; }
}

/* ============================ GATE 3 RESPONSIVE POLISH ============================
   Fixes found by reviewing the five exported frames, not by guesswork. */

/* 1. The meta row wrapped with an orphan at 1024 and 390. Below the desktop
      nav breakpoint it becomes a clean stack instead of a ragged wrap. */
@media (max-width: 1100px) {
  .hero__meta { flex-direction: column; gap: var(--s-1); }
}

/* 2. The two hero CTAs wrapped to mismatched widths between 901 and 1279.
      When they wrap they now fill the row, so the pair reads as deliberate. */
@media (min-width: 901px) and (max-width: 1439px) {
  .hero__actions .btn { flex: 1 1 auto; padding-inline: var(--s-3); }
}

/* 3. Portrait: the constellation was crossing the headline and the lede — the
      background had become the subject. It is now confined to the field above
      the copy, faded out at its lower edge, and dropped in opacity. */
@media (max-width: 900px) {
  .hero__constellation.is-mobile {
    /* viewport-relative, not a share of the hero: the hero also contains the
       light world, so a percentage put the field straight over the copy */
    height: 40vh;
    opacity: .26;
    -webkit-mask-image: linear-gradient(to bottom, #000 0 45%, transparent 100%);
            mask-image: linear-gradient(to bottom, #000 0 45%, transparent 100%);
  }
  /* slice upscales the 390-wide artwork to ~2x at 768, which coarsens the
     links far more than the nodes; thin them back toward their drawn weight */
  .hero__constellation.is-mobile path { stroke-width: .7; }
  /* 4. The logo PNG carries its own transparent margin, which read as a hole
        between the mark and the eyebrow at portrait sizes. */
  .hero__logo { margin-bottom: var(--s-2); }
  .hero { padding-top: calc(var(--header-h) + var(--s-5)); }
}

/* 5. At 768 the logo sat small against a wide canvas; give it more presence
      without touching the phone size. */
@media (min-width: 601px) and (max-width: 900px) {
  .hero__logo { width: min(340px, 46%); }
}