/* ==========================================================================
   QNEST — Quantum Network End-to-End Simulation Toolkit
   Palette and geometry are taken from the logo: ink navy, fiber steel,
   entanglement violet, photon lavender.
   Typeface: Arial throughout. Personality comes from weight and tracking.
   ========================================================================== */

:root {
  --ink:        #0C1220;
  --ink-soft:   #39445A;
  --muted:      #6E7C93;
  --paper:      #FFFFFF;
  --tint:       #F2F5FA;
  --rule:       #DCE3ED;
  --steel:      #7E97BE;
  --violet:     #6C2BD9;
  --violet-2:   #9B6BFF;
  --lav:        #F0E9FF;
  --deep:       #080D1A;
  --deep-2:     #121B31;
  --deep-rule:  #253352;

  --gut: clamp(20px, 5vw, 72px);
  --maxw: 1240px;

  --f-display: clamp(34px, 5.4vw, 66px);
  --f-h2:      clamp(27px, 3.5vw, 44px);
  --f-h3:      clamp(19px, 1.6vw, 24px);
  --f-body:    clamp(15.5px, 1.05vw, 17.5px);
  --f-label:   11px;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
  font-size: var(--f-body);
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--violet); text-decoration: none; }
a:hover { text-decoration: underline; }

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

/* ---------- shared type ---------- */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 22px;
  font-size: var(--f-label);
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}
.eyebrow--light { color: var(--steel); }
.eyebrow--center { justify-content: center; }

.tick {
  width: 26px;
  height: 2px;
  background: var(--violet);
  flex: none;
}
.eyebrow--light .tick { background: var(--violet-2); }

.h2 {
  margin: 0 0 20px;
  max-width: 21ch;
  font-size: var(--f-h2);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.035em;
}
.h2--light { color: #fff; }

.lede {
  margin: 0 0 clamp(36px, 4vw, 60px);
  max-width: 60ch;
  font-size: clamp(16.5px, 1.25vw, 19.5px);
  line-height: 1.6;
  color: var(--ink-soft);
}
.lede--light { color: #A9B8D4; }

.note { color: var(--muted); font-size: 14.5px; }
.note--center { text-align: center; max-width: 62ch; margin: 34px auto 0; }

/* ---------- layout ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gut);
}
.wrap--narrow { max-width: 900px; }

.section, .hero { scroll-margin-top: 74px; }
.section { padding: clamp(72px, 9vw, 132px) 0; border-top: 1px solid var(--rule); }
.section--tint { background: var(--tint); }
.section--thin { padding: clamp(48px, 6vw, 76px) 0; background: var(--tint); }
.section--deep {
  background: var(--deep);
  color: #D3DDF0;
  border-top: none;
}

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(16px); }
.reveal.is-in {
  opacity: 1;
  transform: none;
  transition: opacity .7s ease, transform .7s cubic-bezier(.2, .7, .3, 1);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .reveal.is-in { opacity: 1; transform: none; transition: none; }
  .hero__links path, .viz-photon, .fiber__photon { animation: none !important; }
}

/* ==========================================================================
   NAV
   ========================================================================== */
.nav {
  position: sticky;
  top: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 14px var(--gut);
  background: rgba(255, 255, 255, .82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, background .25s ease;
}
.nav.is-stuck { border-bottom-color: var(--rule); background: rgba(255, 255, 255, .94); }

.nav__brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.nav__brand:hover { text-decoration: none; }
.nav__mark { width: 30px; height: 30px; }
.nav__word {
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.3em;
  color: var(--ink);
}

.nav__links { display: flex; gap: 26px; }
.nav__links a {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
}
.nav__links a:hover { color: var(--violet); text-decoration: none; }

.nav__toggle {
  display: none;
  width: 40px; height: 36px;
  padding: 0;
  background: none;
  border: 1px solid var(--rule);
  border-radius: 6px;
  cursor: pointer;
}
.nav__toggle span {
  display: block;
  width: 18px; height: 2px;
  margin: 3px auto;
  background: var(--ink);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  padding: 14px 26px;
  background: var(--ink);
  color: #fff;
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
  border-radius: 4px;
  border: 1px solid var(--ink);
  transition: background .2s ease, border-color .2s ease, transform .2s ease;
}
.btn:hover {
  background: var(--violet);
  border-color: var(--violet);
  text-decoration: none;
  transform: translateY(-1px);
}
.btn--sm { padding: 9px 18px; font-size: 13.5px; }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn--text {
  background: none;
  border-color: transparent;
  color: var(--violet);
  padding-left: 8px;
  padding-right: 8px;
}
.btn--text:hover { background: none; border-color: transparent; color: var(--violet); text-decoration: underline; }

/* ==========================================================================
   FIBER RAIL — the page's own optical channel
   ========================================================================== */
.fiber {
  position: fixed;
  top: 0; left: 26px;
  width: 3px; height: 100vh;
  z-index: 40;
  pointer-events: none;
  display: none;
}
.fiber__line, .fiber__fill {
  position: absolute;
  left: 1px;
  width: 1px;
}
.fiber__line { top: 0; height: 100%; background: var(--rule); }
.fiber__fill { top: 0; height: 0; background: linear-gradient(180deg, var(--steel), var(--violet)); }
.fiber__photon {
  position: absolute;
  top: 0; left: -3px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--violet-2);
  box-shadow: 0 0 0 4px rgba(155, 107, 255, .18), 0 0 14px 3px rgba(155, 107, 255, .55);
}

@media (min-width: 1180px) {
  .fiber { display: block; }
}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(56px, 8vw, 110px) 0 clamp(64px, 8vw, 108px);
  background:
    radial-gradient(120% 90% at 50% -10%, var(--lav) 0%, rgba(240, 233, 255, 0) 62%),
    var(--paper);
}

.hero__web {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  opacity: .5;
}
.hero__links path {
  fill: none;
  stroke: var(--steel);
  stroke-width: 1;
  stroke-dasharray: 5 9;
  opacity: .5;
  animation: drift 22s linear infinite;
}
.hero__links path:nth-child(2) { animation-duration: 30s; }
.hero__links path:nth-child(3) { animation-duration: 38s; opacity: .32; }
.hero__nodes circle { fill: var(--violet-2); opacity: .5; }

@keyframes drift { to { stroke-dashoffset: -280; } }

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gut);
  text-align: center;
}
.hero__inner .eyebrow { justify-content: center; }

.hero__logo { margin: 0 auto clamp(26px, 3vw, 40px); max-width: 640px; }
.hero__logo img { width: 100%; }

.hero__title {
  margin: 0 0 26px;
  font-size: var(--f-display);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.045em;
}
.hero__title-em {
  color: var(--violet);
}

.hero__lede {
  margin: 0 auto clamp(32px, 4vw, 44px);
  max-width: 66ch;
  font-size: clamp(16px, 1.2vw, 18.5px);
  color: var(--ink-soft);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  align-items: center;
}

.hero__os { margin-top: clamp(38px, 5vw, 58px); }
.hero__os img { margin: 0 auto; max-width: 330px; opacity: .82; }

/* ==========================================================================
   THE GAP
   ========================================================================== */
.gap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
.gap-card { background: var(--paper); padding: 30px 26px 34px; }
.gap-card p { margin: 0; color: var(--ink-soft); font-size: 15.5px; }
.gap-card__h {
  margin: 0 0 4px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.gap-card__meta {
  margin: 0 0 14px !important;
  font-size: var(--f-label) !important;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel) !important;
}
.gap-card--fill { background: var(--ink); color: #fff; }
.gap-card--fill p { color: #B9C6DE; }
.gap-card--fill .gap-card__meta { color: var(--violet-2) !important; }

/* ==========================================================================
   WORKFLOW RAIL
   ========================================================================== */
.rail {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin-bottom: clamp(38px, 5vw, 60px);
}
.rail__wire {
  position: absolute;
  left: 0; right: 0; top: 15px;
  height: 1px;
  background: var(--deep-rule);
}
.rail__stop {
  position: relative;
  z-index: 1;
  display: block;
  padding: 0;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  color: var(--steel);
  font-family: inherit;
}
.rail__stop::before {
  content: "";
  display: block;
  width: 11px; height: 11px;
  margin: 10px 0 16px;
  border-radius: 50%;
  background: var(--deep);
  border: 1px solid var(--steel);
  transition: background .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.rail__stop:hover::before { border-color: var(--violet-2); }
.rail__stop.is-active::before {
  background: var(--violet-2);
  border-color: var(--violet-2);
  box-shadow: 0 0 0 5px rgba(155, 107, 255, .16), 0 0 16px 2px rgba(155, 107, 255, .5);
}
.rail__num {
  display: block;
  font-size: var(--f-label);
  font-weight: 700;
  letter-spacing: 0.2em;
  color: #4A5E85;
  transition: color .25s ease;
}
.rail__stop.is-active .rail__num { color: var(--violet-2); }
.rail__name {
  display: block;
  margin-top: 3px;
  font-size: clamp(14px, 1.15vw, 17px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #7F92B4;
  transition: color .25s ease;
}
.rail__stop:hover .rail__name { color: #C6D3EA; }
.rail__stop.is-active .rail__name { color: #fff; }

/* ---------- panels ---------- */
.panel {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.25fr);
  gap: clamp(28px, 4vw, 64px);
  align-items: start;
}
.panel[hidden] { display: none; }
.panel.is-active { animation: panelIn .45s ease both; }

@keyframes panelIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .panel.is-active { animation: none; }
}

.panel__h {
  margin: 0 0 14px;
  font-size: var(--f-h3);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: #fff;
}
.panel__text p { margin: 0 0 20px; color: #A9B8D4; }

.ticks { margin: 0; padding: 0; list-style: none; }
.ticks li {
  position: relative;
  padding: 9px 0 9px 22px;
  border-top: 1px solid var(--deep-rule);
  font-size: 15px;
  color: #C3D0E8;
}
.ticks li::before {
  content: "";
  position: absolute;
  left: 0; top: 18px;
  width: 8px; height: 1px;
  background: var(--violet-2);
}

.panel__visual--pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}
@media (min-width: 900px) {
  .panel__visual--pair { grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr); align-items: start; }
}

/* ---------- screenshots ---------- */
.shot { margin: 0; }
.shot img {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--rule);
  background: #fff;
  box-shadow: 0 18px 50px rgba(8, 13, 26, .35);
}
.shot figcaption {
  margin-top: 12px;
  font-size: var(--f-label);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel);
}
.shot--wide { margin-top: 8px; }
.shot--wide img { box-shadow: 0 16px 44px rgba(12, 18, 32, .1); }
.shot--wide figcaption { color: var(--muted); }

/* ---------- inline schematics ---------- */
.viz {
  padding: 26px 24px 20px;
  background: var(--deep-2);
  border: 1px solid var(--deep-rule);
  border-radius: 10px;
}
.viz__svg { width: 100%; height: auto; }
.viz__cap {
  margin: 16px 0 0;
  font-size: 13.5px;
  color: #8FA1C0;
}
.key {
  display: inline-block;
  width: 10px; height: 10px;
  margin-right: 6px;
  border-radius: 2px;
  background: rgba(126, 151, 190, .35);
  border: 1px solid var(--steel);
  vertical-align: baseline;
}
.key--rem { background: rgba(155, 107, 255, .3); border-color: var(--violet-2); }

.viz-wire line { stroke: #47597C; stroke-width: 1.5; }
.viz-axis { stroke: #47597C; stroke-width: 1.5; }
.viz-label text, .viz-tlabel text {
  fill: #7F92B4; font-size: 12px; font-family: Arial, sans-serif;
}
.viz-tlabel text { text-anchor: middle; }
.viz-tick line { stroke: #47597C; stroke-width: 1.5; }
.viz-gate { fill: rgba(126, 151, 190, .18); stroke: var(--steel); stroke-width: 1.5; }
.viz-gate--rem { fill: rgba(155, 107, 255, .18); stroke: var(--violet-2); }
.viz-gtext {
  fill: #E5ECFA; font-size: 13px; font-weight: bold;
  text-anchor: middle; font-family: Arial, sans-serif;
}
.viz-ctrl { stroke: var(--steel); stroke-width: 1.5; }
.viz-remote { stroke: var(--violet-2); stroke-width: 1.5; }
.viz-dot { fill: var(--steel); }
.viz-dot--rem { fill: var(--violet-2); }
.viz-box { fill: rgba(126, 151, 190, .07); stroke: var(--deep-rule); stroke-width: 1.5; }
.viz-boxlabel {
  fill: #7F92B4; font-size: 11px; font-weight: bold;
  letter-spacing: .16em; font-family: Arial, sans-serif;
}
.viz-fiber { fill: none; stroke: var(--violet-2); stroke-width: 1.5; stroke-dasharray: 4 5; }
.viz-photon { fill: #F0E9FF; }
.viz-note {
  fill: var(--violet-2); font-size: 11px; font-weight: bold;
  letter-spacing: .14em; text-anchor: middle; font-family: Arial, sans-serif;
}
.viz-ev rect { fill: rgba(155, 107, 255, .16); stroke: var(--violet-2); stroke-width: 1.5; }
.viz-evtext text {
  fill: #D6E0F5; font-size: 12px; text-anchor: middle; font-family: Arial, sans-serif;
}

/* ==========================================================================
   CAPABILITIES
   ========================================================================== */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
.cap {
  background: var(--paper);
  padding: 30px 26px 34px;
  transition: background .25s ease;
}
.cap:hover { background: var(--tint); }
.cap__h {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.015em;
}
.cap p { margin: 0; font-size: 15px; color: var(--ink-soft); }

/* ==========================================================================
   METRICS
   ========================================================================== */
.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(215px, 1fr));
  gap: 0;
  margin: 0;
  border-top: 2px solid var(--ink);
}
.metric { padding: 26px 22px 30px 0; border-bottom: 1px solid var(--rule); }
.metric dt {
  margin-bottom: 8px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.metric dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--ink-soft);
}

/* ==========================================================================
   DOWNLOAD
   ========================================================================== */
.dl-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 14px;
  margin-bottom: clamp(38px, 5vw, 56px);
}
.dl {
  display: block;
  padding: 26px 24px 24px;
  background: var(--deep-2);
  border: 1px solid var(--deep-rule);
  border-radius: 8px;
  transition: border-color .22s ease, transform .22s ease, background .22s ease;
}
.dl:hover {
  border-color: var(--violet-2);
  background: #16213C;
  transform: translateY(-2px);
  text-decoration: none;
}
.dl__os {
  display: block;
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
}
.dl__meta {
  display: block;
  margin: 4px 0 20px;
  font-size: 13.5px;
  color: #8FA1C0;
}
.dl__go {
  display: block;
  font-size: var(--f-label);
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--violet-2);
}

.build { max-width: 720px; }
.build__h {
  margin: 0 0 12px;
  font-size: var(--f-label);
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--steel);
}
.build__note { margin: 12px 0 0; font-size: 13.5px; color: #8FA1C0; }

.code {
  margin: 0;
  padding: 20px 22px;
  overflow-x: auto;
  background: #0B1223;
  border: 1px solid var(--deep-rule);
  border-radius: 8px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 13.5px;
  line-height: 1.75;
  color: #CBD8F0;
}

/* ==========================================================================
   TEAM
   ========================================================================== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(22px, 3vw, 34px);
}
@media (min-width: 620px) { .team-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (min-width: 1040px) { .team-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); } }
.member { text-align: center; }
.member__ph {
  width: 96px; height: 96px;
  margin: 0 auto 14px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--tint);
  border: 1px solid var(--rule);
}
.member__ph--initials {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--lav);
  border-color: #DDD0FA;
  color: var(--violet);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.member__name {
  margin: 0 0 3px;
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.member__aff { margin: 0; font-size: 13.5px; color: var(--muted); }

.contact {
  margin: clamp(38px, 5vw, 56px) 0 0;
  padding-top: 26px;
  border-top: 1px solid var(--rule);
  font-size: 14.5px;
  color: var(--muted);
}

/* ==========================================================================
   CITE
   ========================================================================== */
.cite { position: relative; }
.cite__copy {
  position: absolute;
  top: 12px; right: 12px;
  padding: 8px 14px;
  background: rgba(255, 255, 255, .08);
  border: 1px solid var(--deep-rule);
  border-radius: 4px;
  color: #CBD8F0;
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}
.cite__copy:hover { background: var(--violet); border-color: var(--violet); color: #fff; }
.code--bib { padding-top: 52px; white-space: pre; }

/* ==========================================================================
   PARTNERS
   ========================================================================== */
.partners {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: clamp(28px, 5vw, 64px);
}
.partners img {
  width: auto;
  object-fit: contain;
  filter: grayscale(1);
  opacity: .72;
  transition: filter .25s ease, opacity .25s ease;
}
/* each mark is sized for equal optical weight, not equal pixels */
.partners img:nth-child(1) { height: 27px; }   /* WACQT   — wide, short */
.partners img:nth-child(2) { height: 42px; }   /* Bristol — tall lockup */
.partners img:nth-child(3) { height: 40px; }   /* Smart Internet Lab */
.partners img:nth-child(4) { height: 34px; }   /* IQN Hub */
.partners img:hover { filter: none; opacity: 1; }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.foot {
  padding: clamp(44px, 5vw, 62px) 0;
  background: var(--deep);
  color: #8FA1C0;
}
.foot__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px 40px;
}
.foot__brand { display: flex; align-items: center; gap: 12px; margin-right: auto; }
.foot__mark { width: 36px; height: 36px; filter: brightness(0) invert(1); }
.foot__word {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.3em;
  color: #fff;
}
.foot__sub { margin: 2px 0 0; font-size: 12.5px; color: #6E82A6; }
.foot__links { display: flex; flex-wrap: wrap; gap: 22px; }
.foot__links a { font-size: 14px; font-weight: 700; color: #C3D0E8; }
.foot__links a:hover { color: var(--violet-2); text-decoration: none; }
.foot__legal { width: 100%; margin: 0; font-size: 12.5px; color: #5E7196; }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 980px) {
  .panel { grid-template-columns: minmax(0, 1fr); }
  .rail { grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 4px; }
  .rail__name { font-size: 13px; }
}

@media (max-width: 760px) {
  .nav__links {
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    padding: 8px var(--gut) 18px;
    background: #fff;
    border-bottom: 1px solid var(--rule);
  }
  .nav.is-open .nav__links { display: flex; }
  .nav__links a { padding: 12px 0; border-bottom: 1px solid var(--rule); }
  .nav__toggle { display: block; }

  .rail { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px 16px; }
  .rail__wire { display: none; }
  .rail__stop::before { margin: 4px 0 10px; }

  .metric { padding-right: 0; }
  .member__ph { width: 84px; height: 84px; }
  .hero__cta { flex-direction: column; align-items: stretch; }
  .hero__cta .btn { width: 100%; text-align: center; }
}

@media (max-width: 420px) {
  .rail { grid-template-columns: minmax(0, 1fr); gap: 0; }
  /* the wire turns vertical and keeps threading the stages together */
  .rail__wire {
    display: block;
    left: 5px; right: auto;
    top: 16px; bottom: 22px;
    width: 1px; height: auto;
  }
  .rail__stop { padding-left: 22px; padding-bottom: 10px; }
  .rail__stop::before { position: absolute; left: 0; top: 6px; margin: 0; }
  .rail__num { margin-top: 2px; }
  .partners img:nth-child(1) { height: 20px; }
  .partners img:nth-child(2) { height: 32px; }
  .partners img:nth-child(3) { height: 30px; }
  .partners img:nth-child(4) { height: 26px; }
}

/* ==========================================================================
   HERO DEMO PILL
   ========================================================================== */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 22px;
  padding: 7px 16px 7px 12px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-size: 12.5px;
  color: var(--ink-soft);
  transition: border-color .2s ease, transform .2s ease;
}
.pill:hover { border-color: var(--violet-2); text-decoration: none; transform: translateY(-1px); }
.pill strong { color: var(--ink); font-weight: 700; }
.pill__dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--violet);
  box-shadow: 0 0 0 4px rgba(155, 107, 255, .18);
  flex: none;
}
.pill__sep { width: 1px; height: 13px; background: var(--rule); flex: none; }

@media (max-width: 620px) {
  .pill { flex-wrap: wrap; justify-content: center; row-gap: 2px; border-radius: 14px; }
  .pill__sep { display: none; }
}

/* ==========================================================================
   BUILT ON — the tools underneath
   ========================================================================== */
.stack {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
.dep {
  position: relative;
  background: var(--paper);
  padding: 28px 24px 30px;
}
.dep__role {
  margin: 0 0 14px;
  font-size: var(--f-label);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--steel);
}
.dep__name {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.025em;
}
.dep__what { margin: 0; font-size: 14.5px; color: var(--ink-soft); }

/* ==========================================================================
   ECOC DEMO DETAILS
   ========================================================================== */
.demo {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 0;
  border-top: 2px solid var(--ink);
}
.demo__slot { padding: 24px 22px 26px 0; border-bottom: 1px solid var(--rule); }
.demo__k {
  margin: 0 0 6px;
  font-size: var(--f-label);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--steel);
}
.demo__v {
  margin: 0;
  font-size: clamp(17px, 1.5vw, 21px);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--ink);
}