/* SealedCode.com - Architectural Security Aesthetic */

:root {
  --obsidian: #0B0F12;
  --graphite: #171D21;
  --ice: #F2F5F3;
  --teal: #43C6B5;
  --steel: #66757D;
  --mist: #C8D1D2;
  --amber: #D7A84B;

  --bg: var(--obsidian);
  --surface: var(--graphite);
  --text: var(--ice);
  --muted: var(--steel);
  --accent: var(--teal);

  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --header-h: 4.5rem;
  --gutter: clamp(1.25rem, 4vw, 4rem);
  --max: 72rem;
  --max-wide: 88rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --border: 1px solid color-mix(in srgb, var(--mist) 18%, transparent);
  --teal-glow: 0 0 24px color-mix(in srgb, var(--teal) 35%, transparent);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);
  line-height: 1.65;
  color: var(--text);
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, color-mix(in srgb, var(--teal) 8%, transparent), transparent 50%),
    radial-gradient(ellipse 60% 40% at 100% 0%, color-mix(in srgb, var(--steel) 12%, transparent), transparent 45%),
    linear-gradient(180deg, var(--obsidian) 0%, #0a0e11 40%, var(--obsidian) 100%);
  background-attachment: fixed;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; font-family: var(--font-display); font-weight: 600; line-height: 1.05; letter-spacing: -0.02em; }
p { margin: 0; }
button, input, select, textarea {
  font: inherit;
  color: inherit;
}

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--teal);
  color: var(--obsidian);
  padding: 0.75rem 1rem;
  z-index: 1000;
}
.skip-link:focus { left: 1rem; top: 1rem; }

/* -- Typography -- */
.tech-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--steel);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--teal);
  margin-bottom: 1.5rem;
}

.display-title {
  font-size: clamp(2.75rem, 1.5rem + 5vw, 5.5rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 0.95;
  color: var(--ice);
}
.display-title span { display: block; }
.display-title--light { color: var(--ice); }
.display-title--on-teal { color: var(--obsidian); }

.demo-badge {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  color: var(--amber);
  border: 1px solid color-mix(in srgb, var(--amber) 40%, transparent);
  padding: 0.25rem 0.5rem;
}

.amber-mark { color: var(--amber); }

/* -- Buttons -- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.95rem 1.4rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.btn--sm { padding: 0.65rem 1rem; font-size: 0.75rem; }
.btn--primary {
  background: var(--teal);
  color: var(--obsidian);
}
.btn--primary:hover { background: color-mix(in srgb, var(--teal) 88%, white); transform: translateY(-1px); }
.btn--ghost {
  background: transparent;
  color: var(--ice);
  border-color: color-mix(in srgb, var(--mist) 30%, transparent);
}
.btn--ghost:hover { border-color: var(--teal); color: var(--teal); }
.btn--obsidian {
  background: var(--obsidian);
  color: var(--ice);
}
.btn--obsidian:hover { background: #151a1e; }
.btn--ghost-dark {
  background: transparent;
  color: var(--obsidian);
  border-color: color-mix(in srgb, var(--obsidian) 35%, transparent);
}
.btn--ghost-dark:hover { border-color: var(--obsidian); }

/* -- Header -- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  transition: background 0.35s var(--ease), backdrop-filter 0.35s var(--ease), border-color 0.35s var(--ease), height 0.3s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: color-mix(in srgb, var(--obsidian) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: color-mix(in srgb, var(--teal) 45%, transparent);
  height: 3.75rem;
}
.site-header__inner {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}
.logo__symbol {
  width: 2rem;
  height: 2rem;
  color: var(--ice);
}
.logo__wordmark { display: flex; flex-direction: column; gap: 0.15rem; }
.logo__brand {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
}
.logo__desc {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.1em;
  color: var(--steel);
}
.logo__mobile { display: none; font-family: var(--font-display); font-weight: 700; letter-spacing: 0.08em; font-size: 0.875rem; }

.nav__list {
  display: flex;
  gap: clamp(0.75rem, 1.5vw, 1.5rem);
}
.nav__list a {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mist);
  transition: color 0.2s;
}
.nav__list a:hover { color: var(--teal); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.live-indicator {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  color: var(--steel);
}
.live-indicator__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: var(--teal-glow);
  animation: pulse-dot 2.4s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

.menu-toggle {
  display: none;
  align-items: center;
  gap: 0.4rem;
  background: none;
  border: 1px solid color-mix(in srgb, var(--mist) 25%, transparent);
  color: var(--ice);
  padding: 0.5rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  cursor: pointer;
}
.menu-toggle__icon { font-size: 1rem; line-height: 1; transition: transform 0.3s var(--ease); }
.menu-toggle[aria-expanded="true"] .menu-toggle__icon { transform: rotate(45deg); }

.mobile-menu {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  z-index: 99;
  background: color-mix(in srgb, var(--obsidian) 96%, transparent);
  backdrop-filter: blur(16px);
  padding: 2rem var(--gutter);
}
.mobile-menu[hidden] { display: none; }
.mobile-menu a {
  display: block;
  font-family: var(--font-display);
  font-size: 1.5rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid color-mix(in srgb, var(--mist) 12%, transparent);
}

/* -- Seal rail -- */
.seal-rail {
  position: fixed;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 50;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s;
}
.seal-rail.is-visible { opacity: 1; }
.seal-rail__track {
  width: 2px;
  height: 8rem;
  background: color-mix(in srgb, var(--mist) 15%, transparent);
  position: relative;
}
.seal-rail__progress {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 0%;
  background: var(--teal);
  box-shadow: var(--teal-glow);
  transition: height 0.15s linear;
}
.seal-rail__layers {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.08em;
  color: var(--steel);
  text-align: right;
}
.seal-rail__layers li.is-active { color: var(--teal); }

@media (max-width: 1100px) {
  .seal-rail { display: none; }
}

/* -- Hero -- */
.hero {
  min-height: 100vh;
  min-height: 100dvh;
  padding: calc(var(--header-h) + clamp(2rem, 5vh, 4rem)) var(--gutter) clamp(3rem, 6vh, 5rem);
  display: flex;
  align-items: center;
  position: relative;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, transparent 40%, color-mix(in srgb, var(--teal) 3%, transparent) 100%),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 79px,
      color-mix(in srgb, var(--mist) 4%, transparent) 80px
    ),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 79px,
      color-mix(in srgb, var(--mist) 4%, transparent) 80px
    );
  mask-image: linear-gradient(180deg, black 50%, transparent 100%);
  pointer-events: none;
}
.hero__grid {
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  position: relative;
}
.hero__title {
  font-size: clamp(3rem, 2rem + 5vw, 5.75rem);
  margin: 1rem 0 1.5rem;
  letter-spacing: -0.04em;
}
.hero__title span { display: block; }
.hero__lede {
  max-width: 34rem;
  color: var(--mist);
  margin-bottom: 2rem;
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.hero__visual {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}
.hero__visual-caption {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--steel);
  text-align: center;
}

.sealed-system {
  position: relative;
  width: min(100%, 22rem);
  aspect-ratio: 5 / 6;
  background: linear-gradient(160deg, var(--graphite) 0%, #12171b 100%);
  border: 1px solid color-mix(in srgb, var(--mist) 14%, transparent);
}
.sealed-system__perimeter {
  position: absolute;
  inset: 0;
  color: var(--teal);
  pointer-events: none;
}
.sealed-system__boundary {
  width: 100%;
  height: 100%;
}
.boundary-path {
  animation: boundary-dash 18s linear infinite;
}
@keyframes boundary-dash {
  to { stroke-dashoffset: -160; }
}
.sealed-system__trust {
  position: absolute;
  top: 0.75rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.14em;
  color: var(--teal);
  background: var(--graphite);
  padding: 0 0.5rem;
}

.sealed-system__stack {
  position: absolute;
  inset: 2.5rem 1.75rem 1.75rem;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: space-between;
}

.layer-node {
  position: relative;
  border: 1px solid color-mix(in srgb, var(--mist) 22%, transparent);
  padding: 0.55rem 0.75rem;
  background: color-mix(in srgb, var(--obsidian) 55%, transparent);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.layer-node__label {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.12em;
  color: var(--mist);
}
.layer-node__pulse {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--teal);
  opacity: 0.7;
  animation: pulse-dot 2s ease-in-out infinite;
}
.layer-node--core {
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 1rem;
  border-color: var(--teal);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--teal) 25%, transparent), var(--teal-glow);
  background: color-mix(in srgb, var(--obsidian) 80%, var(--teal) 4%);
}
.layer-node__core-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--ice);
}
.layer-node__mono {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--teal);
  letter-spacing: 0.2em;
}

.layer-flow {
  display: flex;
  justify-content: center;
  height: 0.65rem;
}
.layer-flow span {
  width: 1px;
  height: 100%;
  background: linear-gradient(180deg, transparent, var(--teal), transparent);
}

.data-points {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.data-point {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--teal);
  left: calc(20% + var(--d) * 18%);
  animation: data-travel 6s ease-in-out infinite;
  animation-delay: calc(var(--d) * 1.2s);
  opacity: 0;
}
@keyframes data-travel {
  0% { top: 12%; opacity: 0; }
  15% { opacity: 0.9; }
  85% { opacity: 0.9; }
  100% { top: 88%; opacity: 0; }
}

/* -- Status panel -- */
.status-panel {
  padding: 0 var(--gutter) clamp(3rem, 6vw, 5rem);
}
.status-panel__inner {
  max-width: var(--max);
  margin: 0 auto;
  background: var(--graphite);
  border: 1px solid color-mix(in srgb, var(--mist) 14%, transparent);
  padding: clamp(1.25rem, 3vw, 2rem);
}
.status-panel__head { margin-bottom: 1rem; }
.status-panel__divider {
  display: block;
  height: 1px;
  background: color-mix(in srgb, var(--mist) 18%, transparent);
  margin-top: 0.75rem;
}
.status-panel__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: 0.5rem 2rem;
}
.status-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  padding: 0.45rem 0;
  border-bottom: 1px solid color-mix(in srgb, var(--mist) 8%, transparent);
  color: var(--steel);
}
.status-val { color: var(--mist); }
.status-val--active { color: var(--teal); }
.status-row--system { grid-column: 1 / -1; margin-top: 0.5rem; border-bottom: none; }
.status-panel__foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 1.25rem;
}
.status-note {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--steel);
}

/* -- Intro -- */
.intro {
  padding: clamp(4rem, 10vw, 8rem) var(--gutter);
  border-top: 1px solid color-mix(in srgb, var(--mist) 10%, transparent);
}
.intro__inner { max-width: var(--max); margin: 0 auto; }
.intro__body {
  max-width: 36rem;
  margin: 2rem 0;
  color: var(--mist);
  font-size: clamp(1.05rem, 1rem + 0.3vw, 1.25rem);
}
.intro__quote {
  margin: 3rem 0 0;
  padding: 1.5rem 0 0;
  border-top: 1px solid color-mix(in srgb, var(--teal) 40%, transparent);
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 1rem + 1.5vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--ice);
  max-width: 40rem;
}

/* -- Principles -- */
.principles {
  padding: 0 var(--gutter) clamp(4rem, 8vw, 7rem);
}
.principles__list {
  max-width: var(--max-wide);
  margin: 0 auto;
  border-top: 1px solid color-mix(in srgb, var(--mist) 14%, transparent);
}
.principle {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1.5rem;
  align-items: center;
  padding: clamp(1.5rem, 3vw, 2.5rem) 0;
  border-bottom: 1px solid color-mix(in srgb, var(--mist) 14%, transparent);
  position: relative;
  cursor: default;
  transition: background 0.35s var(--ease);
}
.principle::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--teal);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.4s var(--ease);
}
.principle:hover,
.principle:focus-visible {
  background: color-mix(in srgb, var(--graphite) 70%, transparent);
}
.principle:hover::before,
.principle:focus-visible::before {
  transform: scaleY(1);
}
.principle__num {
  font-family: var(--font-display);
  font-size: clamp(3rem, 2rem + 4vw, 5.5rem);
  font-weight: 600;
  color: color-mix(in srgb, var(--steel) 50%, transparent);
  line-height: 1;
  transition: color 0.35s, transform 0.35s var(--ease);
  min-width: 3.5rem;
}
.principle:hover .principle__num,
.principle:focus-visible .principle__num {
  color: var(--teal);
  transform: scale(1.08);
}
.principle__content h3 {
  font-size: clamp(1.25rem, 1rem + 1vw, 1.75rem);
  margin-bottom: 0.35rem;
  letter-spacing: 0.04em;
}
.principle__content p { color: var(--mist); max-width: 28rem; }
.principle__diagram {
  width: 7.5rem;
  color: var(--steel);
  opacity: 0;
  transform: translateX(0.5rem);
  transition: opacity 0.35s, transform 0.35s var(--ease);
}
.principle:hover .principle__diagram,
.principle:focus-visible .principle__diagram {
  opacity: 1;
  transform: none;
}

/* -- Services -- */
.services {
  padding: clamp(4rem, 8vw, 7rem) var(--gutter);
  background: linear-gradient(180deg, transparent, color-mix(in srgb, var(--graphite) 40%, transparent) 20%, transparent);
}
.services__head { max-width: var(--max-wide); margin: 0 auto 3rem; }
.services__list { max-width: var(--max-wide); margin: 0 auto; }
.service-row {
  display: grid;
  grid-template-columns: 4rem 1fr auto;
  gap: 1.25rem;
  align-items: center;
  padding: 1.5rem 0;
  border-top: 1px solid color-mix(in srgb, var(--mist) 14%, transparent);
  transition: padding-left 0.3s var(--ease), border-color 0.3s;
}
.service-row:last-child { border-bottom: 1px solid color-mix(in srgb, var(--mist) 14%, transparent); }
.service-row:hover {
  padding-left: 0.75rem;
  border-color: color-mix(in srgb, var(--teal) 50%, transparent);
}
.service-row__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--teal);
  letter-spacing: 0.1em;
}
.service-row__body h3 {
  font-size: clamp(1.1rem, 1rem + 0.6vw, 1.4rem);
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
}
.service-row__body p { color: var(--mist); font-size: 0.9375rem; max-width: 40rem; }
.service-row__arrow {
  font-size: 1.25rem;
  color: var(--steel);
  transition: color 0.25s, transform 0.25s;
}
.service-row:hover .service-row__arrow {
  color: var(--teal);
  transform: translate(2px, -2px);
}

/* -- Concentric layers -- */
.layers-section {
  padding: clamp(4rem, 10vw, 8rem) var(--gutter);
  background:
    radial-gradient(ellipse at center, color-mix(in srgb, var(--teal) 6%, transparent), transparent 60%),
    var(--graphite);
  border-block: 1px solid color-mix(in srgb, var(--mist) 10%, transparent);
}
.layers-section__head { max-width: var(--max); margin: 0 auto 3rem; }

.concentric {
  max-width: 36rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}
.concentric__ring {
  border: 1px solid color-mix(in srgb, var(--mist) 28%, transparent);
  padding: clamp(1rem, 3vw, 1.75rem);
  position: relative;
  width: 100%;
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease), border-color 0.4s;
}
.concentric.is-inview .concentric__ring {
  opacity: 1;
  transform: scale(1);
}
.concentric.is-inview .concentric__ring[data-ring="infra"] { transition-delay: 0.05s; }
.concentric.is-inview .concentric__ring[data-ring="network"] { transition-delay: 0.15s; }
.concentric.is-inview .concentric__ring[data-ring="identity"] { transition-delay: 0.25s; }
.concentric.is-inview .concentric__ring[data-ring="application"] { transition-delay: 0.35s; }
.concentric.is-inview .concentric__ring[data-ring="code"] { transition-delay: 0.45s; }

.concentric__label {
  position: absolute;
  top: -0.55rem;
  left: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.12em;
  color: var(--steel);
  background: var(--graphite);
  padding: 0 0.4rem;
}
.concentric__ring--core {
  border-color: var(--teal);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 6rem;
  box-shadow: var(--teal-glow);
}
.concentric__seal {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--teal);
  font-size: 0.875rem;
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.6s 0.7s, transform 0.6s 0.7s;
}
.concentric.is-sealed .concentric__seal {
  opacity: 1;
  transform: scale(1);
}
.concentric.is-sealed .concentric__ring {
  border-color: color-mix(in srgb, var(--teal) 55%, var(--mist));
}
.concentric__legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  color: var(--steel);
}

/* -- Lifecycle -- */
.lifecycle {
  padding: clamp(4rem, 8vw, 7rem) var(--gutter);
}
.lifecycle__head { max-width: var(--max-wide); margin: 0 auto 3rem; }
.lifecycle__track {
  max-width: var(--max-wide);
  margin: 0 auto;
  position: relative;
}
.lifecycle__line {
  position: absolute;
  left: 0;
  right: 0;
  top: 0.55rem;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--teal) 10%, var(--teal) 90%, transparent);
  opacity: 0.6;
}
.lifecycle__stages {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1rem;
  position: relative;
}
.lifecycle__stages li {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}
.lifecycle__dot {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--obsidian);
  border: 2px solid var(--teal);
  box-shadow: var(--teal-glow);
}
.lifecycle__stages h3 {
  font-size: 0.9375rem;
  letter-spacing: 0.08em;
}
.lifecycle__stages p {
  font-size: 0.8125rem;
  color: var(--mist);
}

/* -- Code review -- */
.code-review {
  padding: clamp(4rem, 8vw, 7rem) var(--gutter);
  background: var(--graphite);
}
.code-review__center {
  text-align: center;
  margin-bottom: 2.5rem;
}
.code-review__flow {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--teal);
}
.code-review__split {
  max-width: var(--max-wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.review-panel {
  border: 1px solid color-mix(in srgb, var(--mist) 16%, transparent);
  padding: 1.5rem;
  background: var(--obsidian);
}
.review-panel h3 {
  font-size: 0.875rem;
  letter-spacing: 0.14em;
  margin-bottom: 1.25rem;
  color: var(--steel);
}
.review-panel--after { border-color: color-mix(in srgb, var(--teal) 40%, transparent); }
.review-panel--after h3 { color: var(--teal); }
.review-line {
  display: flex;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid color-mix(in srgb, var(--mist) 8%, transparent);
}
.hl {
  display: inline-block;
  min-width: 4rem;
  padding: 0.15rem 0.35rem;
  letter-spacing: 0.08em;
}
.hl--auth, .hl--input, .hl--access, .hl--data {
  background: color-mix(in srgb, var(--amber) 20%, transparent);
  color: var(--amber);
}
.hl--ok {
  background: color-mix(in srgb, var(--teal) 20%, transparent);
  color: var(--teal);
}
.dim { color: var(--steel); }
.arch-sketch { margin-top: 1.5rem; color: var(--steel); }

/* -- Threat model -- */
.threat-model {
  padding: clamp(4rem, 8vw, 7rem) var(--gutter);
}
.threat-model__head { max-width: var(--max); margin: 0 auto 3rem; }

.threat-map {
  position: relative;
  width: min(100%, 28rem);
  aspect-ratio: 1;
  margin: 0 auto 2rem;
}
.threat-map__center {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.1em;
  font-size: 0.8125rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--teal);
  background: var(--obsidian);
  box-shadow: var(--teal-glow);
}
.threat-map__lines {
  position: absolute;
  inset: 0;
  color: color-mix(in srgb, var(--mist) 25%, transparent);
}
.threat-node {
  position: absolute;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.08em;
  text-align: center;
  padding: 0.5rem 0.65rem;
  border: 1px solid color-mix(in srgb, var(--mist) 25%, transparent);
  background: var(--graphite);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  opacity: 0;
  animation: node-in 0.6s var(--ease) forwards;
  animation-delay: calc(var(--i) * 0.1s + 0.2s);
}
@keyframes node-in {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}
.threat-node:nth-child(2) { top: 0; left: 50%; transform: translateX(-50%); }
.threat-node:nth-child(3) { top: 18%; right: 0; }
.threat-node:nth-child(4) { bottom: 18%; right: 0; }
.threat-node:nth-child(5) { bottom: 0; left: 50%; transform: translateX(-50%); }
.threat-node:nth-child(6) { bottom: 18%; left: 0; }
.threat-node:nth-child(7) { top: 18%; left: 0; }

.boundary-tag {
  font-size: 0.5rem;
  color: var(--steel);
}
.threat-legend {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--steel);
}
.tag-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  margin-right: 0.35rem;
  vertical-align: middle;
}
.tag-dot--trusted { background: var(--teal); }
.tag-dot--untrusted { background: var(--amber); }
.tag-dot--external { background: var(--steel); }

/* -- Identity -- */
.identity {
  padding: clamp(4rem, 8vw, 7rem) var(--gutter);
  border-top: 1px solid color-mix(in srgb, var(--mist) 10%, transparent);
}
.identity__head { max-width: var(--max); margin: 0 auto 3rem; }
.identity-flow {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0;
}
.identity-step {
  border: 1px solid color-mix(in srgb, var(--mist) 20%, transparent);
  padding: 1rem 1.25rem;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-align: center;
  background: color-mix(in srgb, var(--graphite) 80%, transparent);
}
.identity-step--resource {
  border-color: var(--teal);
  color: var(--teal);
}
.identity-connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.35rem 0;
  position: relative;
}
.access-line {
  width: 1px;
  height: 1.75rem;
  background: linear-gradient(180deg, var(--steel), var(--teal));
  position: relative;
  overflow: hidden;
}
.access-line::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 30%;
  background: var(--ice);
  animation: access-pulse 2.5s ease-in-out infinite;
}
@keyframes access-pulse {
  0% { top: -30%; opacity: 0; }
  30% { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}
.access-tag {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.14em;
  color: var(--teal);
  margin-top: 0.15rem;
}

/* -- Data protection -- */
.data-protection {
  position: relative;
  padding: clamp(4rem, 10vw, 8rem) var(--gutter);
  background: #070a0c;
  overflow: hidden;
}
.data-protection__texture {
  position: absolute;
  inset: 0;
  opacity: 0.12;
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 3px,
      color-mix(in srgb, var(--teal) 40%, transparent) 3px,
      color-mix(in srgb, var(--teal) 40%, transparent) 4px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 11px,
      color-mix(in srgb, var(--mist) 30%, transparent) 11px,
      color-mix(in srgb, var(--mist) 30%, transparent) 12px
    );
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
  pointer-events: none;
}
.data-protection__inner {
  position: relative;
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 3rem;
  align-items: center;
}
.data-protection__inner .display-title { grid-column: 1; }
.data-flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}
.data-stage {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  padding: 0.65rem 1.25rem;
  border: 1px solid color-mix(in srgb, var(--mist) 22%, transparent);
  min-width: 10rem;
  text-align: center;
}
.data-arrow { color: var(--teal); font-size: 0.75rem; }
.data-principles {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--mist);
}

/* -- Dashboard -- */
.dashboard {
  padding: clamp(4rem, 8vw, 6rem) var(--gutter);
}
.dashboard__frame {
  max-width: var(--max);
  margin: 0 auto;
  border: 1px solid color-mix(in srgb, var(--mist) 16%, transparent);
  background: var(--graphite);
}
.dashboard__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid color-mix(in srgb, var(--mist) 12%, transparent);
}
.dashboard__panels {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: color-mix(in srgb, var(--mist) 10%, transparent);
}
.dash-panel {
  background: var(--graphite);
  padding: 1.5rem;
}
.dash-panel h3 {
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  margin-bottom: 0.25rem;
}
.dash-panel__sub {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  color: var(--steel);
  margin-bottom: 1rem;
}
.meter {
  height: 6px;
  background: color-mix(in srgb, var(--obsidian) 80%, transparent);
  border: 1px solid color-mix(in srgb, var(--mist) 12%, transparent);
}
.meter span {
  display: block;
  height: 100%;
  width: var(--w);
  background: linear-gradient(90deg, color-mix(in srgb, var(--teal) 60%, transparent), var(--teal));
}

/* -- Compliance -- */
.compliance {
  padding: clamp(4rem, 8vw, 7rem) var(--gutter);
  max-width: var(--max-wide);
  margin: 0 auto;
}
.compliance__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 3rem 0 1.5rem;
  background: color-mix(in srgb, var(--mist) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--mist) 14%, transparent);
}
.compliance__grid li {
  background: var(--obsidian);
  padding: 1.75rem 1.25rem;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.1em;
  font-size: 0.9375rem;
  text-align: center;
  transition: background 0.25s, color 0.25s;
}
.compliance__grid li:hover {
  background: var(--graphite);
  color: var(--teal);
}
.compliance__note { margin-top: 1rem; }

/* -- Engineering -- */
.engineering {
  padding: clamp(4rem, 8vw, 7rem) var(--gutter);
  max-width: var(--max-wide);
  margin: 0 auto;
}
.pillars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
  position: relative;
}
.pillars__line {
  position: absolute;
  top: 0.4rem;
  left: 5%;
  right: 5%;
  height: 1px;
  background: var(--teal);
  opacity: 0.5;
}
.pillar {
  padding-top: 1.5rem;
  position: relative;
}
.pillar::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 8px;
  height: 8px;
  border: 1px solid var(--teal);
  background: var(--obsidian);
  border-radius: 50%;
}
.pillar h3 {
  font-size: 1rem;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}
.pillar p { color: var(--mist); font-size: 0.9375rem; }

/* -- Cases -- */
.cases {
  padding: clamp(4rem, 8vw, 7rem) var(--gutter);
  border-top: 1px solid color-mix(in srgb, var(--mist) 10%, transparent);
}
.cases .display-title { max-width: var(--max-wide); margin: 0 auto; }
.cases__note {
  max-width: var(--max-wide);
  margin: 1rem auto 2rem;
  display: block;
}
.cases__track {
  max-width: var(--max-wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
.case {
  border: 1px solid color-mix(in srgb, var(--mist) 14%, transparent);
  padding: 1.25rem;
  background: color-mix(in srgb, var(--graphite) 50%, transparent);
  transition: border-color 0.3s;
}
.case:hover { border-color: color-mix(in srgb, var(--teal) 45%, transparent); }
.case__num {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  color: var(--steel);
}
.case h3 {
  font-size: 1.125rem;
  margin: 0.75rem 0 0.5rem;
  letter-spacing: 0.04em;
}
.case__visual {
  margin-top: 1.25rem;
  color: var(--mist);
  border-top: 1px solid color-mix(in srgb, var(--mist) 10%, transparent);
  padding-top: 1rem;
}

/* -- Why -- */
.why {
  padding: clamp(4rem, 10vw, 8rem) var(--gutter);
  background:
    linear-gradient(180deg, transparent, color-mix(in srgb, var(--graphite) 55%, transparent)),
    var(--obsidian);
}
.why .display-title,
.why__grid {
  max-width: var(--max-wide);
  margin-left: auto;
  margin-right: auto;
}
.why__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}
.why__grid h3 {
  font-size: 1.125rem;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
  color: var(--teal);
}
.why__grid p { color: var(--mist); }

/* -- Insights -- */
.insights {
  padding: clamp(4rem, 8vw, 7rem) var(--gutter);
  max-width: var(--max);
  margin: 0 auto;
}
.insights__list { margin-top: 2.5rem; }
.insight {
  padding: 1.5rem 0;
  border-top: 1px solid color-mix(in srgb, var(--mist) 14%, transparent);
  display: grid;
  gap: 0.5rem;
  transition: padding-left 0.3s;
}
.insight:last-child { border-bottom: 1px solid color-mix(in srgb, var(--mist) 14%, transparent); }
.insight:hover { padding-left: 0.5rem; }
.insight h3 {
  font-size: clamp(1.1rem, 1rem + 0.5vw, 1.35rem);
  letter-spacing: -0.01em;
}

/* -- Trust -- */
.trust {
  padding: clamp(4rem, 8vw, 6rem) var(--gutter);
  background: #070a0c;
  text-align: center;
}
.trust .display-title { margin-bottom: 2.5rem; }
.trust__clients {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem 2.5rem;
  margin-bottom: 2.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--steel);
}
.trust__tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem 2rem;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.12em;
  font-size: 0.875rem;
  color: var(--mist);
}
.trust__manifesto {
  margin-top: 3rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem 1.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 1rem + 1.5vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--ice);
}
.trust__manifesto span:nth-child(2) { color: var(--teal); }

/* -- Final CTA -- */
.final-cta {
  position: relative;
  padding: clamp(5rem, 12vw, 9rem) var(--gutter);
  background: var(--teal);
  color: var(--obsidian);
  text-align: center;
  overflow: hidden;
}
.final-cta .tech-label { color: color-mix(in srgb, var(--obsidian) 70%, transparent); }
.final-cta__boundary {
  position: absolute;
  inset: 5%;
  color: color-mix(in srgb, var(--obsidian) 25%, transparent);
  pointer-events: none;
}
.final-cta__boundary svg { width: 100%; height: 100%; }
.cta-boundary { animation: boundary-dash 22s linear infinite; }
.final-cta__lede {
  max-width: 32rem;
  margin: 1.5rem auto 2rem;
  color: color-mix(in srgb, var(--obsidian) 80%, transparent);
  position: relative;
}
.final-cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  position: relative;
}

/* -- Inquiry -- */
.inquiry {
  padding: clamp(4rem, 8vw, 7rem) var(--gutter);
  max-width: var(--max);
  margin: 0 auto;
}
.inquiry-form { margin-top: 2.5rem; }
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.75rem;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.field--full { grid-column: 1 / -1; }
.field span {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  color: var(--steel);
}
.field input,
.field select,
.field textarea {
  background: var(--graphite);
  border: 1px solid color-mix(in srgb, var(--mist) 18%, transparent);
  padding: 0.85rem 1rem;
  border-radius: 0;
  transition: border-color 0.25s;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--teal);
}
.field textarea { resize: vertical; min-height: 8rem; }
.privacy-note {
  margin-top: 1rem;
  font-size: 0.8125rem;
  color: var(--steel);
}
.form-status {
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--teal);
}

/* -- Footer -- */
.site-footer {
  background: #06090b;
  border-top: 1px solid color-mix(in srgb, var(--mist) 10%, transparent);
  padding: clamp(3rem, 6vw, 5rem) var(--gutter) 2rem;
}
.site-footer__top {
  max-width: var(--max-wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 2.5fr;
  gap: 3rem;
  padding-bottom: 3rem;
}
.site-footer__cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.site-footer h3 {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  margin-bottom: 1rem;
  color: var(--steel);
}
.site-footer li + li { margin-top: 0.5rem; }
.site-footer a {
  font-size: 0.875rem;
  color: var(--mist);
  transition: color 0.2s;
}
.site-footer a:hover { color: var(--teal); }
.site-footer__bottom {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding-top: 1.5rem;
  border-top: 1px solid color-mix(in srgb, var(--mist) 10%, transparent);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.8125rem;
  color: var(--steel);
}

/* -- Seal complete -- */
.seal-complete {
  position: fixed;
  inset: auto 1.5rem 1.5rem auto;
  z-index: 60;
  width: 4.5rem;
  height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s;
}
.seal-complete.is-visible { opacity: 1; }
.seal-complete__ring {
  position: absolute;
  inset: 0;
  border: 1px solid var(--teal);
  box-shadow: var(--teal-glow);
  animation: seal-spin 12s linear infinite;
}
@keyframes seal-spin {
  to { transform: rotate(360deg); }
}
.seal-complete__word {
  font-family: var(--font-display);
  font-size: 0.5625rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--teal);
}

/* -- Reveal on scroll -- */
.reveal {
  opacity: 0;
  transform: translateY(1.25rem);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* -- Responsive -- */
@media (max-width: 1024px) {
  .nav { display: none; }
  .live-indicator { display: none; }
  .header-cta { display: none; }
  .menu-toggle { display: inline-flex; }
  .logo__wordmark { display: none; }
  .logo__mobile { display: block; }

  .hero__grid { grid-template-columns: 1fr; }
  .hero__visual { order: -1; max-width: 20rem; margin: 0 auto; }
  .hero { min-height: auto; padding-top: calc(var(--header-h) + 1.5rem); }

  .lifecycle__stages { grid-template-columns: repeat(3, 1fr); row-gap: 2rem; }
  .lifecycle__line { display: none; }

  .code-review__split { grid-template-columns: 1fr; }
  .data-protection__inner { grid-template-columns: 1fr; gap: 2rem; text-align: center; }
  .data-principles { flex-direction: row; flex-wrap: wrap; justify-content: center; }
  .pillars { grid-template-columns: 1fr 1fr; }
  .pillars__line { display: none; }
  .cases__track {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 1rem;
    padding-bottom: 0.5rem;
    -webkit-overflow-scrolling: touch;
  }
  .case {
    flex: 0 0 min(80vw, 18rem);
    scroll-snap-align: start;
  }
  .why__grid { grid-template-columns: 1fr 1fr; }
  .compliance__grid { grid-template-columns: 1fr 1fr; }
  .site-footer__top { grid-template-columns: 1fr; }
  .site-footer__cols { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .principle {
    grid-template-columns: auto 1fr;
  }
  .principle__diagram { display: none; }
  .service-row { grid-template-columns: 2.5rem 1fr; }
  .service-row__arrow { display: none; }
  .lifecycle__stages { grid-template-columns: 1fr 1fr; }
  .dashboard__panels { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .why__grid { grid-template-columns: 1fr; }
  .compliance__grid { grid-template-columns: 1fr; }
  .site-footer__cols { grid-template-columns: 1fr; }
  .threat-map { width: min(100%, 20rem); }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__actions .btn { justify-content: center; }
}

@media (min-width: 1025px) {
  .mobile-menu { display: none !important; }
}