/*
 * Exposight landing page (C-UI-2, tokens and type from DESIGN.md; motion system from C-UI-1).
 * CSS only: 3D transforms and scroll-driven animations. Every scroll animation sits
 * inside @supports (animation-timeline: view()) and uses no backwards fill, so without
 * support (or before an element is reached) content is static and fully visible.
 * prefers-reduced-motion: reduce turns off every animation, every 3D tilt and the radar sweep.
 * Fonts: Plus Jakarta Sans (OFL, PlusJakartaSans-OFL.txt), Inter (OFL, Inter-OFL.txt),
 * IBM Plex Mono (OFL, OFL.txt).
 */

@font-face {
  font-family: "Plus Jakarta Sans";
  src: url("/static/fonts/PlusJakartaSans-Variable.woff2") format("woff2");
  font-weight: 200 800;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter";
  src: url("/static/fonts/Inter-Variable.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("/static/fonts/IBMPlexMono-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #09090b;
  --surface-1: #0c0d0e;
  --surface-2: #121316;
  --surface-3: #18191d;
  --border: #27272a;
  --border-subtle: #1e1f24;
  --text: #fafafa;
  --text-muted: #a1a1aa;
  --text-faint: #52525b;
  --accent: #22d3ee;
  --accent-hover: #06b6d4;
  --accent-glow: rgba(34, 211, 238, 0.25);
  --critical: #ef4444;
  --high: #f97316;
  --medium: #f59e0b;
  --low: #3b82f6;
  --info: #a1a1aa;
  --ok: #10b981;
  --display: "Plus Jakarta Sans", ui-sans-serif, system-ui, sans-serif;
  --font: "Inter", ui-sans-serif, system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", monospace;
  --radius: 4px;
  --radius-panel: 8px;
  --container: 1200px;
  --header-h: 64px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  -webkit-text-size-adjust: 100%;
}

body.landing-body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.5;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

h1, h2, h3, p, ol, ul, figure {
  margin: 0;
}

ol, ul {
  padding: 0;
  list-style: none;
}

a {
  color: inherit;
}

.mono {
  font-family: var(--mono);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
}

.accent {
  color: var(--accent);
}

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

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  padding: 8px 14px;
  background: var(--accent);
  color: var(--bg);
  border-radius: var(--radius);
  font-weight: 600;
  z-index: 100;
}

.skip-link:focus {
  top: 12px;
}

.landing-container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: var(--radius);
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary {
  color: var(--bg);
  background: var(--accent);
  font-weight: 700;
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 16px rgba(34, 211, 238, 0.35);
}

.btn-secondary {
  color: var(--text);
  background: var(--surface-2);
  border-color: var(--border);
}

.btn-secondary:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* Shared pieces */
.panel {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-panel);
}

.panel-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-1);
  border-radius: var(--radius-panel) var(--radius-panel) 0 0;
}

.panel-title {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.example-tag {
  margin-left: auto;
  padding: 2px 8px;
  border-radius: 9999px;
  font-size: 0.6875rem;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.35);
}

.window-dots {
  display: inline-flex;
  gap: 6px;
}

.window-dots span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--border);
}

.chip-sev {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 9999px;
  font-family: var(--mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  white-space: nowrap;
  border: 1px solid;
}

.sev-critical { color: var(--critical); background: rgba(239, 68, 68, 0.15); border-color: rgba(239, 68, 68, 0.35); }
.sev-high { color: var(--high); background: rgba(249, 115, 22, 0.15); border-color: rgba(249, 115, 22, 0.35); }
.sev-medium { color: var(--medium); background: rgba(245, 158, 11, 0.15); border-color: rgba(245, 158, 11, 0.35); }
.sev-low { color: var(--low); background: rgba(59, 130, 246, 0.15); border-color: rgba(59, 130, 246, 0.35); }

.section-label {
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
}

/* Header */
.landing-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(9, 9, 11, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-subtle);
}

.landing-header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.6;
}

.landing-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.landing-nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
}

.landing-nav-link:hover {
  color: var(--text);
}

.landing-signin-btn {
  min-height: 36px;
  padding: 0 16px;
  font-size: 0.875rem;
}

/* Hero */
.hero-section {
  position: relative;
  padding: 80px 0 96px;
  overflow: hidden;
  isolation: isolate;
}

.hero-backdrop {
  position: absolute;
  inset: 0;
  z-index: -1;
  perspective: 700px;
  background: radial-gradient(55% 45% at 70% 25%, rgba(34, 211, 238, 0.07), transparent 70%);
}

.hero-floor {
  position: absolute;
  left: -50%;
  right: -50%;
  top: 30%;
  height: 70%;
  background-image:
    linear-gradient(var(--border-subtle) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-subtle) 1px, transparent 1px);
  background-size: 64px 64px;
  transform: rotateX(72deg);
  transform-origin: 50% 0%;
  mask-image: linear-gradient(to bottom, transparent 0%, #000 25%, #000 50%, transparent 95%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 25%, #000 50%, transparent 95%);
}

.hero-container {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  align-items: center;
  gap: 56px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 2px 10px;
  border-radius: 9999px;
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.35);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.hero-title {
  margin-top: 24px;
  font-family: var(--display);
  font-size: clamp(2.25rem, 4.2vw, 3.5rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.hero-line {
  display: block;
  text-wrap: balance;
}

.hero-line-accent {
  color: var(--accent);
}

.hero-subhead {
  margin-top: 20px;
  max-width: 34rem;
  color: var(--text-muted);
  font-size: 1.0625rem;
  line-height: 1.6;
}

.hero-actions {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-width: 34rem;
}

.domain-box {
  flex: 1 1 12rem;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  border-radius: var(--radius);
  background: var(--surface-1);
  border: 1px solid var(--border);
  color: var(--text-faint);
  text-decoration: none;
  font-size: 0.875rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.domain-box:hover {
  border-color: rgba(34, 211, 238, 0.6);
  box-shadow: 0 0 12px -2px var(--accent-glow);
}

.trust-labels {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
}

.trust-labels li::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 8px;
  border-radius: 1px;
  background: var(--accent);
  vertical-align: 1px;
}

/* Floating 3D pipeline card */
.hero-stage {
  perspective: 1400px;
  display: flex;
  justify-content: center;
}

.hero-card {
  --rx: 0deg;
  --ry: 0deg;
  position: relative;
  width: min(100%, 460px);
  padding: 20px;
  border-radius: var(--radius-panel);
  background: var(--surface-2);
  border: 1px solid var(--border);
  box-shadow: 0 40px 80px -30px rgba(0, 0, 0, 0.9);
  transform-style: preserve-3d;
  transform: rotateX(calc(14deg + var(--rx))) rotateY(calc(-20deg + var(--ry))) rotateZ(2deg);
  transition: transform 0.4s ease-out;
  overflow: hidden;
}

.hero-card-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--border);
  transform: translateZ(30px);
}

.hero-card-meta {
  margin-left: auto;
  color: var(--text-muted);
}

.hero-card-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.pipeline-nodes {
  display: grid;
  gap: 8px;
  transform-style: preserve-3d;
}

.pipeline-stage-node {
  display: grid;
  grid-template-columns: 32px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--radius);
  background: var(--bg);
  border: 1px solid var(--border-subtle);
  transform: translateZ(18px);
}

.pipeline-stage-node:nth-child(2) { transform: translateZ(26px); }
.pipeline-stage-node:nth-child(3) { transform: translateZ(34px); }
.pipeline-stage-node:nth-child(4) { transform: translateZ(42px); }
.pipeline-stage-node:nth-child(5) { transform: translateZ(50px); }

.node-idx {
  color: var(--text-muted);
}

.node-title {
  font-family: var(--display);
  font-weight: 600;
}

.node-desc {
  color: var(--text-muted);
  font-size: 0.75rem;
  text-align: right;
}

.hero-card-beam {
  display: none;
}

/* Example recon panel: radar + scan feed */
.recon-panel {
  margin-top: 72px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-panel);
}

.recon-panel-body {
  display: grid;
  grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
  gap: 32px;
  align-items: center;
  padding: 28px;
}

.radar {
  position: relative;
  width: 100%;
  max-width: 300px;
  aspect-ratio: 1;
  margin: 0 auto;
  border-radius: 50%;
  overflow: hidden;
  background:
    linear-gradient(var(--surface-3), var(--surface-3)) center / 1px 100% no-repeat,
    linear-gradient(var(--surface-3), var(--surface-3)) center / 100% 1px no-repeat,
    repeating-radial-gradient(circle, var(--bg) 0 37px, var(--surface-3) 37px 38px),
    var(--bg);
  border: 1px solid var(--border);
}

.radar-sweep {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(from 0deg, rgba(34, 211, 238, 0.35), rgba(34, 211, 238, 0.08) 12%, transparent 22%);
}

.radar-dot {
  position: absolute;
  width: 8px;
  height: 8px;
  margin: -4px 0 0 -4px;
  border-radius: 50%;
  background: var(--accent);
}

.radar-dot-1 { left: 32%; top: 28%; }
.radar-dot-2 { left: 70%; top: 36%; }
.radar-dot-3 { left: 58%; top: 72%; }
.radar-dot-4 { left: 24%; top: 62%; }
.radar-dot-5 { left: 78%; top: 60%; }

.radar-dot-critical {
  background: var(--critical);
  box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.2);
}

.scan-feed {
  display: grid;
  gap: 6px;
  font-size: 0.8125rem;
  color: var(--text-muted);
  min-width: 0;
}

.scan-feed li {
  display: grid;
  grid-template-columns: 4.5rem 5.5rem minmax(0, 1fr);
  gap: 12px;
  padding: 6px 10px;
  border-radius: var(--radius);
  overflow-wrap: anywhere;
}

.scan-feed time {
  color: var(--text-muted);
}

.feed-stage {
  color: var(--accent);
}

.scan-feed .feed-critical {
  color: var(--critical);
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.35);
}

.feed-critical .feed-stage {
  color: var(--critical);
}

/* Sections */
.landing-section {
  padding: 112px 0;
  border-top: 1px solid var(--border-subtle);
}

.section-title {
  margin-top: 12px;
  font-family: var(--display);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  max-width: 24ch;
}

.section-lead {
  margin-top: 16px;
  max-width: 44rem;
  color: var(--text-muted);
}

/* Surface: topology + inventory */
.surface-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.8fr);
  gap: 20px;
  align-items: start;
}

.topology-body {
  padding: 24px;
}

.topo-apex {
  display: inline-block;
  padding: 8px 14px;
  border-radius: var(--radius);
  background: var(--surface-1);
  border: 1px solid rgba(34, 211, 238, 0.6);
  color: var(--accent);
}

.topo-children {
  position: relative;
  margin: 0 0 0 20px;
  padding: 12px 0 0 22px;
  border-left: 1px solid var(--border);
  display: grid;
  gap: 10px;
  font-size: 0.8125rem;
}

.topo-node {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: var(--radius);
  background: var(--bg);
  border: 1px solid var(--border);
}

.topo-node::before {
  content: "";
  position: absolute;
  left: -23px;
  top: 50%;
  width: 22px;
  border-top: 1px solid var(--border);
}

.topo-node-critical {
  border-color: rgba(239, 68, 68, 0.6);
  background: rgba(239, 68, 68, 0.08);
}

.table-scroll {
  overflow-x: auto;
}

.inventory-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.inventory-table th {
  padding: 10px 14px;
  text-align: left;
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--surface-1);
  border-bottom: 1px solid var(--border);
}

.inventory-table td {
  padding: 12px 14px;
  background: var(--bg);
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}

.inventory-table td.mono {
  font-size: 0.8125rem;
}

.inventory-table td:nth-child(4) {
  white-space: normal;
  min-width: 12rem;
}

.inventory-table tbody tr:last-child td {
  border-bottom: 0;
}

.inventory-table tbody tr:last-child td:first-child {
  border-bottom-left-radius: var(--radius-panel);
}

.inventory-table tbody tr:last-child td:last-child {
  border-bottom-right-radius: var(--radius-panel);
}

.inventory-table tbody tr:hover td {
  background: var(--surface-3);
}

/* How it works (static by default; pinned sequence added below when supported) */
.how-section {
  padding: 112px 0;
  border-top: 1px solid var(--border-subtle);
}

.how-container {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 56px;
  align-items: start;
}

.how-rail {
  margin-top: 32px;
  display: grid;
}

.how-rail-item {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 10px 0;
  color: var(--text-muted);
  font-family: var(--display);
  font-size: 1.125rem;
  font-weight: 500;
  border-bottom: 1px solid var(--border-subtle);
}

.how-rail-item .mono {
  color: var(--accent);
}

.how-progress {
  display: none;
}

.how-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.how-card {
  padding: 28px;
  border-radius: var(--radius-panel);
  background: var(--surface-2);
  border: 1px solid var(--border);
}

.how-card-step {
  color: var(--accent);
  text-transform: uppercase;
}

.how-card-alert .how-card-step {
  color: var(--high);
}

.how-card-title {
  margin-top: 10px;
  font-family: var(--display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.4;
}

.how-card-text {
  margin-top: 10px;
  color: var(--text-muted);
  max-width: 60ch;
}

.how-card-visual {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.field,
.field-btn,
.chip {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface-1);
  color: var(--text);
}

.field {
  min-width: 12rem;
  color: var(--text-muted);
}

.field-btn {
  border-color: transparent;
  background: var(--accent);
  color: var(--bg);
  font-weight: 600;
}

.chip-live {
  color: var(--accent);
  border-color: rgba(34, 211, 238, 0.35);
}

.chip-ok {
  color: var(--ok);
  border-color: rgba(16, 185, 129, 0.35);
  background: rgba(16, 185, 129, 0.15);
}

.chip-alert {
  color: var(--high);
  border-color: rgba(249, 115, 22, 0.35);
}

/* What a scan checks */
.stages-list {
  margin-top: 48px;
  display: grid;
  gap: 12px;
  perspective: 1200px;
}

.stage-step-card {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) auto;
  gap: 20px;
  align-items: start;
  padding: 24px 28px;
  border-radius: var(--radius-panel);
  background: var(--surface-2);
  border: 1px solid var(--border);
}

.stage-step-num {
  font-size: 0.875rem;
  color: var(--accent);
  padding-top: 4px;
}

.stage-step-title {
  font-family: var(--display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.stage-step-text {
  margin-top: 6px;
  color: var(--text-muted);
  max-width: 62ch;
}

.stage-step-source {
  color: var(--text-muted);
  font-size: 0.75rem;
  padding-top: 6px;
  white-space: nowrap;
}

/* Features */
.features-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  perspective: 1000px;
}

.feature-item {
  --rx: 0deg;
  --ry: 0deg;
  --mx: 50%;
  --my: 0%;
  position: relative;
  padding: 28px;
  border-radius: var(--radius-panel);
  background: var(--surface-2);
  border: 1px solid var(--border);
  transform: rotateX(var(--rx)) rotateY(var(--ry));
  transform-style: preserve-3d;
  transition: transform 0.25s ease-out, border-color 0.25s ease, background-color 0.25s ease;
}

.feature-item::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: radial-gradient(320px circle at var(--mx) var(--my), rgba(34, 211, 238, 0.08), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.feature-item:hover {
  background: var(--surface-3);
  border-color: rgba(34, 211, 238, 0.6);
}

.feature-item:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
  transform: translateZ(30px);
}

.feature-title {
  margin-top: 18px;
  font-family: var(--display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  transform: translateZ(20px);
}

.feature-desc {
  margin-top: 8px;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

/* Ownership verification */
.ownership-container {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
}

.trust-code-chassis {
  padding: 20px;
  display: grid;
  gap: 10px;
  overflow-x: auto;
  background: var(--surface-1);
}

.code-label {
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
}

.trust-code {
  font-family: var(--mono);
  font-size: 0.875rem;
  color: var(--accent);
  overflow-wrap: anywhere;
}

/* CTA */
.cta-section {
  text-align: center;
}

.cta-container {
  display: grid;
  justify-items: center;
}

.cta-title {
  font-family: var(--display);
  font-size: clamp(2.25rem, 4.6vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
}

.cta-desc {
  margin-top: 16px;
  color: var(--text-muted);
  max-width: 36rem;
}

.cta-action {
  margin-top: 32px;
}

/* Floating pill nav */
.pill-nav {
  position: fixed;
  left: 50%;
  bottom: 20px;
  z-index: 40;
  translate: -50% 0;
  display: flex;
  gap: 2px;
  padding: 4px;
  border-radius: 9999px;
  background: rgba(9, 9, 11, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  transition: opacity 0.25s ease, translate 0.25s ease, visibility 0.25s;
}

/* Set by landing.js while the hero is in view; visibility keeps hidden links out of tab order. */
.pill-nav.is-hidden {
  opacity: 0;
  translate: -50% 16px;
  visibility: hidden;
  pointer-events: none;
}

.pill-nav-link {
  padding: 6px 14px;
  border-radius: 9999px;
  color: var(--text-muted);
  font-size: 0.8125rem;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.pill-nav-link:hover {
  color: var(--text);
}

.pill-nav-link.is-active {
  background: var(--accent);
  color: var(--bg);
}

/* Footer */
.landing-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 32px 0 96px;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-link {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-link:hover {
  color: var(--accent);
}

/* ---------------------------------------------------------------------------
 * Motion. Everything below runs only when the visitor has not asked for less motion.
 * ------------------------------------------------------------------------- */
@media (prefers-reduced-motion: no-preference) {
  /* Hero entrance: one orchestrated load sequence. */
  .hero-copy > * {
    animation: rise 0.9s cubic-bezier(0.2, 0.7, 0.2, 1) both;
  }
  .hero-copy > :nth-child(2) { animation-delay: 0.08s; }
  .hero-copy > :nth-child(3) { animation-delay: 0.16s; }
  .hero-copy > :nth-child(4) { animation-delay: 0.24s; }
  .hero-copy > :nth-child(5) { animation-delay: 0.32s; }

  .hero-card {
    animation: card-in 1.2s cubic-bezier(0.2, 0.7, 0.2, 1) 0.15s both;
  }

  /* Stages light up in sequence while the beam passes over them. */
  .pipeline-stage-node {
    animation: stage-lit 7.5s ease-in-out infinite;
  }
  .pipeline-stage-node:nth-child(2) { animation-delay: 1.2s; }
  .pipeline-stage-node:nth-child(3) { animation-delay: 2.4s; }
  .pipeline-stage-node:nth-child(4) { animation-delay: 3.6s; }
  .pipeline-stage-node:nth-child(5) { animation-delay: 4.8s; }

  .hero-card-beam {
    display: block;
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: 120px;
    background: linear-gradient(180deg, transparent, rgba(34, 211, 238, 0.1) 60%, rgba(34, 211, 238, 0.4) 98%, transparent);
    border-bottom: 1px solid rgba(34, 211, 238, 0.7);
    pointer-events: none;
    animation: beam 7.5s linear infinite;
    transform: translateZ(60px);
  }

  .radar-sweep {
    animation: sweep 4s linear infinite;
  }
}

@keyframes rise {
  from { opacity: 0; translate: 0 26px; }
  to { opacity: 1; translate: 0 0; }
}

@keyframes card-in {
  from { opacity: 0; translate: 0 60px; scale: 0.92; }
  to { opacity: 1; translate: 0 0; scale: 1; }
}

@keyframes stage-lit {
  0% { border-color: var(--border-subtle); background-color: var(--bg); }
  6% { border-color: var(--accent); background-color: rgba(34, 211, 238, 0.12); }
  20%, 70% { border-color: rgba(34, 211, 238, 0.4); background-color: rgba(34, 211, 238, 0.05); }
  85%, 100% { border-color: var(--border-subtle); background-color: var(--bg); }
}

@keyframes beam {
  0% { translate: 0 -120px; opacity: 0; }
  5% { opacity: 1; }
  75% { translate: 0 400px; opacity: 1; }
  82%, 100% { translate: 0 400px; opacity: 0; }
}

@keyframes sweep {
  to { rotate: 360deg; }
}

/* Scroll-driven motion: only where the browser supports view/scroll timelines. */
@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    /* Parallax: the floor drifts and the pipeline card flattens as the hero scrolls away. */
    .hero-floor {
      animation: drift-floor linear both;
      animation-timeline: scroll(root);
      animation-range: 0 100vh;
    }
    .hero-stage {
      animation: flatten linear both;
      animation-timeline: scroll(root);
      animation-range: 0 90vh;
    }

    /* Depth reveal. No backwards/forwards fill: outside its range the element is
       simply visible, so off-screen and fully-scrolled content never stays hidden. */
    .reveal {
      animation: reveal-depth linear;
      animation-timeline: view();
      animation-range: entry 0% entry 100%;
    }
  }

  /* Pinned "How it works" sequence on wide screens. 200vh keeps the empty space a
     full-page render shows under the pinned frame below one viewport, and every
     scroll position has one step card in focus (overlapping card ranges). */
  @media (prefers-reduced-motion: no-preference) and (min-width: 900px) {
    .how-section {
      view-timeline-name: --how;
      height: 200vh;
      padding: 0;
    }
    .how-sticky {
      position: sticky;
      top: var(--header-h);
      height: calc(100vh - var(--header-h));
      display: flex;
      align-items: center;
    }
    .how-container {
      align-items: center;
    }
    .how-progress {
      display: block;
      margin-top: 28px;
      height: 2px;
      background: var(--border);
      border-radius: 2px;
      overflow: hidden;
    }
    .how-progress span {
      display: block;
      height: 100%;
      background: var(--accent);
      transform-origin: left;
      animation: grow linear both;
      animation-timeline: --how;
      animation-range: contain 0% contain 100%;
    }
    .how-cards {
      position: relative;
      height: min(420px, 60vh);
      perspective: 1200px;
      transform-style: preserve-3d;
    }
    .how-card {
      position: absolute;
      inset: 0;
      margin: auto;
      height: max-content;
      opacity: 0;
      animation: card-focus linear both;
      animation-timeline: --how;
    }
    .how-card:nth-child(1) { animation-range: contain 0% contain 28%; animation-name: card-focus-first; }
    .how-card:nth-child(2) { animation-range: contain 22% contain 53%; }
    .how-card:nth-child(3) { animation-range: contain 47% contain 78%; }
    .how-card:nth-child(4) { animation-range: contain 72% contain 100%; animation-name: card-focus-last; }

    .how-rail-item {
      animation: rail-on linear;
      animation-timeline: --how;
    }
    .how-rail-item:nth-child(1) { animation-range: contain 0% contain 25%; }
    .how-rail-item:nth-child(2) { animation-range: contain 25% contain 50%; }
    .how-rail-item:nth-child(3) { animation-range: contain 50% contain 75%; }
    .how-rail-item:nth-child(4) { animation-range: contain 75% contain 100%; }
  }
}

@keyframes drift-floor {
  to { translate: 0 18%; }
}

@keyframes flatten {
  to { translate: 0 -60px; scale: 0.94; opacity: 0.4; }
}

@keyframes reveal-depth {
  from { opacity: 0; translate: 0 64px; rotate: x 16deg; scale: 0.94; }
  to { opacity: 1; translate: 0 0; rotate: x 0deg; scale: 1; }
}

@keyframes grow {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

@keyframes card-focus {
  0% { opacity: 0; translate: 0 90px; rotate: x 22deg; scale: 0.9; }
  10%, 90% { opacity: 1; translate: 0 0; rotate: x 0deg; scale: 1; }
  100% { opacity: 0; translate: 0 -90px; rotate: x -18deg; scale: 1.04; }
}

@keyframes card-focus-first {
  0%, 90% { opacity: 1; translate: 0 0; rotate: x 0deg; scale: 1; }
  100% { opacity: 0; translate: 0 -90px; rotate: x -18deg; scale: 1.04; }
}

@keyframes card-focus-last {
  0% { opacity: 0; translate: 0 90px; rotate: x 22deg; scale: 0.9; }
  10%, 100% { opacity: 1; translate: 0 0; rotate: x 0deg; scale: 1; }
}

@keyframes rail-on {
  0%, 100% { color: var(--text); border-bottom-color: var(--accent); }
}

/* Reduced motion: no animation, no 3D tilt, no hover tilt, no radar sweep. */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
  .hero-card,
  .feature-item,
  .pipeline-stage-node,
  .hero-card-head,
  .feature-icon,
  .feature-title,
  .hero-floor {
    transform: none !important;
  }
}

/* Small screens */
@media (max-width: 899px) {
  .landing-nav-link {
    display: none;
  }
  .hero-section {
    padding: 48px 0 72px;
  }
  .hero-container,
  .how-container,
  .surface-grid,
  .ownership-container {
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
  }
  .hero-card {
    transform: rotateX(calc(10deg + var(--rx))) rotateY(calc(-8deg + var(--ry)));
  }
  .recon-panel {
    margin-top: 56px;
  }
  .recon-panel-body {
    grid-template-columns: minmax(0, 1fr);
    padding: 20px;
  }
  .radar {
    max-width: 240px;
  }
  .landing-section,
  .how-section {
    padding: 80px 0;
  }
  .stage-step-card {
    grid-template-columns: 40px minmax(0, 1fr);
    padding: 22px;
  }
  .stage-step-source {
    grid-column: 2;
    white-space: normal;
    padding-top: 0;
  }
  .features-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .pill-nav-link {
    padding: 6px 10px;
  }
}

@media (max-width: 640px) {
  .hero-title {
    font-size: 2.25rem;
    line-height: 2.75rem;
    letter-spacing: -0.025em;
  }
  .section-title {
    font-size: 1.5rem;
    line-height: 2rem;
  }
  .scan-feed li {
    grid-template-columns: 4.5rem minmax(0, 1fr);
  }
  .scan-feed li > span:last-child {
    grid-column: 1 / -1;
  }
}

/* The pill nav would cover content on phones; the header Sign in stays. */
@media (max-width: 479px) {
  .pill-nav {
    display: none;
  }
  .landing-footer {
    padding-bottom: 32px;
  }
  .landing-container,
  .landing-header-inner {
    padding: 0 16px;
  }
  .hero-actions > * {
    flex: 1 1 100%;
  }
  .node-desc {
    display: none;
  }
  .pipeline-stage-node {
    grid-template-columns: 32px 1fr;
  }
  .how-card {
    padding: 22px;
  }
}