/* ============================================================
   ASX Quant Platform — engineering showcase
   Dark, high-tech aesthetic. No external CSS deps beyond fonts.
   ============================================================ */

:root {
  --bg: #050816;
  --bg-2: #07091e;
  --panel: rgba(14, 18, 40, 0.55);
  --panel-2: rgba(20, 26, 56, 0.45);
  --line: rgba(148, 163, 184, 0.12);
  --line-2: rgba(148, 163, 184, 0.22);
  --text: #e6ecf5;
  --text-soft: #b8c2d6;
  --text-mute: #6b748c;

  --cyan: #00d9ff;
  --cyan-2: #38bdf8;
  --violet: #a78bfa;
  --violet-2: #7c3aed;
  --amber: #f59e0b;
  --emerald: #10b981;
  --rose: #fb7185;

  --bronze: #c8954a;
  --silver: #c2c9d6;
  --gold: #ffcf6b;

  --grad: linear-gradient(115deg, var(--cyan) 0%, #76e2ff 30%, var(--violet) 65%, #ff7eb6 100%);
  --grad-alt: linear-gradient(115deg, var(--amber) 0%, #ffd166 40%, #ff7eb6 100%);
  --grad-soft: linear-gradient(135deg, rgba(0, 217, 255, 0.18), rgba(167, 139, 250, 0.14));

  --radius: 14px;
  --radius-sm: 8px;
  --content-w: 1200px;
  --content-w-wide: 1380px;
  --content-pad: clamp(20px, 4vw, 56px);

  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --display: 'Space Grotesk', 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --body: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;

  --ease: cubic-bezier(.2, .8, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html {
  background: var(--bg);
  color-scheme: dark;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
}
body {
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--cyan); }
code, .mono { font-family: var(--mono); font-feature-settings: "ss01", "ss02", "cv11"; }
code {
  font-size: 0.92em;
  background: rgba(0, 217, 255, 0.08);
  color: #b9f1ff;
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid rgba(0, 217, 255, 0.15);
}

/* ============================================================
   Backgrounds: grid + soft mesh + scanline
   ============================================================ */

.bg-grid {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(to right, rgba(148, 163, 184, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(148, 163, 184, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 0%, #000 0%, #000 55%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 0%, #000 55%, transparent 100%);
}

.bg-mesh {
  position: fixed; inset: -10%;
  pointer-events: none;
  z-index: 0;
  filter: blur(80px) saturate(140%);
  opacity: 0.55;
}
.bg-mesh .mesh {
  position: absolute;
  width: 50vmax; height: 50vmax;
  border-radius: 50%;
  mix-blend-mode: screen;
}
.mesh.m1 { background: radial-gradient(circle, rgba(0, 217, 255, 0.45), transparent 60%); top: -10%; left: -10%; animation: drift1 32s var(--ease) infinite alternate; }
.mesh.m2 { background: radial-gradient(circle, rgba(167, 139, 250, 0.4), transparent 60%); top: 30%; right: -15%; animation: drift2 42s var(--ease) infinite alternate; }
.mesh.m3 { background: radial-gradient(circle, rgba(245, 158, 11, 0.18), transparent 60%); bottom: -20%; left: 20%; animation: drift3 50s var(--ease) infinite alternate; }
.mesh.m4 { background: radial-gradient(circle, rgba(255, 126, 182, 0.18), transparent 60%); top: 60%; left: -10%; animation: drift4 60s var(--ease) infinite alternate; }

@keyframes drift1 { from { transform: translate(0,0); } to { transform: translate(30vmin, 20vmin); } }
@keyframes drift2 { from { transform: translate(0,0); } to { transform: translate(-25vmin, 15vmin); } }
@keyframes drift3 { from { transform: translate(0,0); } to { transform: translate(20vmin, -25vmin); } }
@keyframes drift4 { from { transform: translate(0,0); } to { transform: translate(40vmin, -10vmin); } }

.bg-scanline {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 1;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255,255,255,0.012) 0px,
    rgba(255,255,255,0.012) 1px,
    transparent 1px,
    transparent 3px
  );
  mix-blend-mode: overlay;
  opacity: 0.6;
}

@media (prefers-reduced-motion: reduce) {
  .bg-mesh .mesh { animation: none !important; }
}

/* ============================================================
   Topbar
   ============================================================ */

.topbar {
  position: sticky; top: 0;
  z-index: 50;
  display: flex; align-items: center; gap: 18px;
  padding: 14px clamp(16px, 3vw, 36px);
  background: linear-gradient(to bottom, rgba(5, 8, 22, 0.85), rgba(5, 8, 22, 0.55));
  backdrop-filter: blur(14px) saturate(130%);
  -webkit-backdrop-filter: blur(14px) saturate(130%);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark { width: 26px; height: 26px; flex-shrink: 0; filter: drop-shadow(0 0 6px rgba(0, 217, 255, 0.55)); }
.brand-name { font-family: var(--display); font-weight: 700; letter-spacing: -0.01em; font-size: 15px; }
.brand-tag { color: var(--text-mute); font-family: var(--mono); font-size: 12px; }
.topnav { margin-left: auto; display: flex; gap: 22px; }
.topnav a {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-soft);
  padding: 4px 2px;
  position: relative;
}
.topnav a::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 1px; background: var(--grad);
  transform: scaleX(0); transform-origin: left center;
  transition: transform .25s var(--ease);
}
.topnav a:hover { color: #fff; }
.topnav a:hover::after { transform: scaleX(1); }
.topnav a.active { color: #fff; }
.topnav a.active::after { transform: scaleX(1); }
.status-chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 10px;
  border: 1px solid rgba(16, 185, 129, 0.35);
  background: rgba(16, 185, 129, 0.08);
  color: #b9f6dc;
  border-radius: 999px;
  font-size: 11.5px;
}
.status-chip .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--emerald);
  box-shadow: 0 0 8px var(--emerald), 0 0 0 3px rgba(16, 185, 129, 0.15);
  animation: pulse 2.2s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.55; transform: scale(0.86); } }

@media (max-width: 820px) {
  .topnav { display: none; }
}

/* ============================================================
   Layout primitives
   ============================================================ */

main { position: relative; z-index: 2; }
.section {
  max-width: var(--content-w);
  margin: 0 auto;
  padding: clamp(72px, 9vw, 130px) var(--content-pad);
}
.section-head { max-width: 880px; margin-bottom: 56px; }
.eyebrow {
  display: inline-block;
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  background: linear-gradient(180deg, #fff 0%, #b9c5dd 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.section-lede { color: var(--text-soft); font-size: 17px; max-width: 70ch; margin: 0; }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(14px) saturate(120%);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}
.card::before {
  content: '';
  position: absolute; inset: 0;
  background: var(--grad-soft);
  opacity: 0;
  transition: opacity .35s var(--ease);
  pointer-events: none;
}
.card:hover { border-color: var(--line-2); transform: translateY(-2px); }
.card:hover::before { opacity: 0.55; }

/* ============================================================
   Hero
   ============================================================ */

.hero {
  position: relative;
  max-width: var(--content-w);
  margin: 0 auto;
  padding: clamp(48px, 8vw, 100px) var(--content-pad) clamp(64px, 8vw, 120px);
  text-align: left;
}
.hero-logo {
  display: block;
  width: 100%;
  max-width: 320px;
  height: auto;
  user-select: none;
  cursor: zoom-in;
}
.hero-bracket {
  position: absolute;
  font-family: var(--mono);
  font-size: clamp(28px, 4vw, 44px);
  color: rgba(0, 217, 255, 0.45);
  text-shadow: 0 0 14px rgba(0, 217, 255, 0.4);
  user-select: none;
}
.hero-bracket.left { top: 60px; left: var(--content-pad); }
.hero-bracket.right { top: 60px; right: var(--content-pad); }
.hero-bracket.bleft { bottom: 30px; left: var(--content-pad); }
.hero-bracket.bright { bottom: 30px; right: var(--content-pad); }

.hero-eyebrow {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
  font-size: 12px;
  color: var(--text-mute);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 30px;
}
.hero-eyebrow .kicker {
  color: var(--cyan);
  border: 1px solid rgba(0, 217, 255, 0.35);
  background: rgba(0, 217, 255, 0.06);
  padding: 4px 8px;
  border-radius: 6px;
}
.hero-eyebrow .sep { opacity: 0.4; }

.hero-title {
  font-family: var(--display);
  font-weight: 600;
  margin: 0;
  font-size: clamp(40px, 6.8vw, 88px);
  line-height: 1.04;
  letter-spacing: -0.035em;
  text-wrap: balance;
}
.hero-title .line { display: block; }
.hero-title .line.main { text-wrap: balance; }
.hero-title .sub {
  font-weight: 500;
  font-size: clamp(20px, 2.8vw, 32px);
  color: var(--text-soft);
  margin-top: 22px;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.hero-title .grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 24px rgba(0, 217, 255, 0.18));
}
.hero-title .grad-alt {
  background: var(--grad-alt);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lede-row {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: clamp(24px, 3.5vw, 56px);
  align-items: stretch;
  margin: 34px 0 40px;
}
.hero-lede {
  margin: 0;
  max-width: none;
  font-size: clamp(15px, 1.4vw, 18px);
  color: var(--text-soft);
  align-self: center;
}
.hero-logo-cell {
  display: flex;
  align-items: center;
  justify-content: center;
}
@media (max-width: 760px) {
  .hero-lede-row { grid-template-columns: 1fr; gap: 24px; }
  .hero-logo-cell { max-height: 200px; }
}

.hero-stack {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-bottom: 60px;
}
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--mono);
  font-size: 12.5px;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(20, 26, 56, 0.5);
  color: var(--text-soft);
  transition: all .25s var(--ease);
}
.chip b { color: #fff; font-weight: 600; }
.chip:hover { border-color: rgba(0, 217, 255, 0.5); color: #fff; background: rgba(0, 217, 255, 0.08); }

/* Small centred logo sitting just above the scroll cue */
.hero-logo-foot {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: clamp(30px, 5vw, 60px) 0 18px;
}
.hero-logo-mark {
  display: block;
  width: 360px;
  max-width: 90%;
  height: auto;
  user-select: none;
  cursor: zoom-in;          /* clickable through the lightbox */
  opacity: 0.95;
}
.hero-scroll {
  display: block;
  width: max-content;
  margin: 0 auto;
  font-size: 12px;
  color: var(--text-mute);
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: all .25s var(--ease);
}
.hero-scroll:hover { color: var(--cyan); border-color: rgba(0, 217, 255, 0.5); }

/* ============================================================
   About (what this is)
   ============================================================ */

.about { padding-top: clamp(40px, 6vw, 80px); }
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}
.about-lead .section-title { margin-bottom: 22px; }
.about-lede {
  color: var(--text-soft);
  font-size: clamp(15px, 1.3vw, 17px);
  margin: 0 0 18px;
  max-width: 66ch;
}
.about-spec { padding: 26px; }
.spec-tag { font-size: 11.5px; color: var(--text-mute); letter-spacing: 0.05em; margin-bottom: 14px; }
.spec-list { margin: 0; padding: 0; display: grid; gap: 10px; }
.spec-list > div {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 14px;
  padding: 8px 0;
  border-top: 1px dashed var(--line);
  font-size: 13.5px;
}
.spec-list > div:first-child { border-top: 0; padding-top: 0; }
.spec-list dt {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--text-mute);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding-top: 1px;
}
.spec-list dd { margin: 0; color: var(--text-soft); }

.value-stream {
  margin-top: 50px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(7, 9, 30, 0.55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.vs-tag {
  font-size: 11.5px;
  color: var(--cyan);
  letter-spacing: 0.06em;
  margin-bottom: 14px;
  text-transform: uppercase;
}
.vs-steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 4px 22px;
}
.vs-steps li {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 10px 0;
  border-top: 1px dashed var(--line);
  font-size: 13.5px;
  color: var(--text-soft);
}
.vs-steps li:first-child,
.vs-steps li:nth-child(2),
.vs-steps li:nth-child(3),
.vs-steps li:nth-child(4) { border-top: 0; }
.vs-num { color: var(--cyan); font-size: 12px; min-width: 22px; }

@media (max-width: 920px) {
  .about-grid { grid-template-columns: 1fr; }
  .vs-steps li:nth-child(n) { border-top: 1px dashed var(--line); }
  .vs-steps li:first-child { border-top: 0; }
}

/* ============================================================
   Scale strip
   ============================================================ */

.scale-strip {
  position: relative;
  max-width: var(--content-w-wide);
  margin: 0 auto;
  padding: 30px var(--content-pad) 80px;
}
.scale-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.stat {
  padding: 26px 22px;
  background: rgba(7, 9, 30, 0.6);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: background .25s var(--ease);
}
.stat:hover { background: rgba(14, 18, 40, 0.85); }
.stat-num {
  font-size: clamp(34px, 4vw, 56px);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 6px;
}
.stat-label { font-family: var(--mono); font-size: 12px; color: var(--text-soft); text-transform: lowercase; }
.scale-note { color: var(--text-mute); margin: 18px 4px 0; font-size: 12.5px; }

@media (max-width: 920px) {
  .scale-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================================
   Pillars
   ============================================================ */

.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}
.pillar { padding: 28px; }
.pillar-num {
  font-size: 12px;
  color: var(--cyan);
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}
.pillar h3 {
  font-family: var(--display);
  font-size: 22px;
  margin: 0 0 12px;
  letter-spacing: -0.015em;
  color: #fff;
}
.pillar p { color: var(--text-soft); margin: 0 0 16px; font-size: 14.5px; }
.pillar-list { list-style: none; padding: 0; margin: 0; font-size: 12.5px; color: var(--text-soft); }
.pillar-list li { padding: 4px 0; }
.pillar-list .bullet { color: var(--violet); margin-right: 6px; }

/* ============================================================
   Medallion
   ============================================================ */

.medallion {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 16px;
  align-items: stretch;
  margin-bottom: 40px;
}
.layer {
  position: relative;
  border-radius: var(--radius);
  padding: 26px;
  background: var(--panel);
  border: 1px solid var(--line);
  overflow: hidden;
  transition: transform .25s var(--ease), border-color .25s var(--ease);
}
.layer::after {
  content: '';
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px;
}
.layer.bronze::after { background: linear-gradient(180deg, #a06a2f 0%, var(--bronze) 100%); box-shadow: 0 0 12px rgba(200, 149, 74, 0.55); }
.layer.silver::after { background: linear-gradient(180deg, #6c7a91 0%, var(--silver) 100%); box-shadow: 0 0 12px rgba(194, 201, 214, 0.45); }
.layer.gold::after { background: linear-gradient(180deg, #e0a440 0%, var(--gold) 100%); box-shadow: 0 0 14px rgba(255, 207, 107, 0.55); }
.layer:hover { transform: translateY(-2px); border-color: var(--line-2); }
.layer-tag { font-size: 11px; color: var(--text-mute); letter-spacing: 0.1em; margin-bottom: 10px; text-transform: uppercase; }
.layer h3 { font-family: var(--display); font-size: 26px; margin: 0 0 8px; letter-spacing: -0.02em; }
.layer.bronze h3 { color: var(--bronze); }
.layer.silver h3 { color: var(--silver); }
.layer.gold h3 { color: var(--gold); }
.layer h3 .dim { color: var(--text-mute); }
.layer-desc { color: var(--text-soft); font-size: 14px; margin: 0 0 14px; }
.layer-feeds { list-style: none; padding: 0; margin: 0; font-size: 12px; color: var(--text-soft); }
.layer-feeds li { padding: 3px 0; border-top: 1px dashed var(--line); }
.layer-feeds li:first-child { border-top: 0; padding-top: 0; }
.arrow {
  align-self: center;
  font-size: 22px;
  color: var(--cyan);
  text-shadow: 0 0 12px rgba(0, 217, 255, 0.6);
  font-family: var(--mono);
}

@media (max-width: 980px) {
  .medallion { grid-template-columns: 1fr; }
  .arrow { transform: rotate(90deg); }
}

/* ============================================================
   Diagram frame
   ============================================================ */

.diagram-frame {
  position: relative;
  margin: 0;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(0, 217, 255, 0.07), rgba(167, 139, 250, 0.07));
  box-shadow:
    0 30px 90px rgba(0, 0, 0, 0.5),
    inset 0 0 0 1px rgba(255, 255, 255, 0.02);
}
/* Visible "click to enlarge" affordance on every diagram */
.diagram-frame::before {
  content: '⤢  click to enlarge';
  position: absolute;
  top: 18px;
  right: 18px;
  z-index: 3;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--cyan);
  background: rgba(7, 9, 30, 0.78);
  border: 1px solid rgba(0, 217, 255, 0.45);
  padding: 6px 10px 6px 9px;
  border-radius: 999px;
  pointer-events: none;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0.85;
  transition: opacity .25s var(--ease), transform .25s var(--ease);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}
.diagram-frame:hover::before {
  opacity: 1;
  transform: scale(1.04);
}
@media (max-width: 600px) {
  .diagram-frame::before { font-size: 10.5px; top: 14px; right: 14px; padding: 5px 9px; }
}
.diagram-frame.wide {
  max-width: 1380px;
  margin-left: auto; margin-right: auto;
}

/* Full-bleed hero diagram between hero and about */
.hero-diagram {
  position: relative;
  z-index: 2;
  padding: 0 var(--content-pad) 0;
  max-width: 1500px;
  margin: 0 auto;
}
.diagram-frame.hero-bleed {
  border-radius: 22px;
  padding: 10px;
  box-shadow:
    0 40px 120px rgba(0, 0, 0, 0.65),
    0 0 0 1px rgba(0, 217, 255, 0.18),
    inset 0 0 0 1px rgba(255, 255, 255, 0.03);
  position: relative;
  overflow: visible;
}
.diagram-frame.hero-bleed::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 24px;
  padding: 2px;
  background: var(--grad);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.35;
  pointer-events: none;
}
.diagram-frame.hero-bleed img {
  border-radius: 14px;
  filter: saturate(110%) brightness(0.97) contrast(102%);
}
.diagram-frame.hero-bleed figcaption {
  position: static;
  margin: 18px 6px 0;
  text-align: left;
}
.diagram-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
  filter: saturate(105%) brightness(0.95);
}
.diagram-frame figcaption {
  position: absolute;
  left: 18px; bottom: -28px;
  font-size: 11.5px;
  color: var(--text-mute);
  letter-spacing: 0.04em;
}

/* ============================================================
   Cloud grid
   ============================================================ */

.cloud-grid {
  margin-top: 60px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.cloud-card { padding: 22px; }
.cloud-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.cloud-pill {
  font-family: var(--mono);
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 4px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.cloud-pill.az { background: rgba(0, 120, 212, 0.18); color: #79c1ff; border: 1px solid rgba(0, 120, 212, 0.35); }
.cloud-pill.gcp { background: rgba(234, 67, 53, 0.16); color: #ff9b8a; border: 1px solid rgba(234, 67, 53, 0.3); }
.cloud-pill.graph { background: rgba(167, 139, 250, 0.18); color: #c4b5fd; border: 1px solid rgba(167, 139, 250, 0.35); }
.cloud-pill.src { background: rgba(245, 158, 11, 0.16); color: #fcd281; border: 1px solid rgba(245, 158, 11, 0.32); }
.cloud-role { font-size: 11px; color: var(--text-mute); }
.cloud-card h4 { font-family: var(--display); font-size: 18px; margin: 0 0 8px; letter-spacing: -0.015em; color: #fff; }
.cloud-card p { margin: 0; font-size: 13.5px; color: var(--text-soft); }

/* ============================================================
   AI Ops: actors + guardrails
   ============================================================ */

.actor-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 40px;
}
.actor { padding: 24px; }
.actor-icon {
  font-size: 22px;
  color: var(--cyan);
  text-shadow: 0 0 14px rgba(0, 217, 255, 0.65);
  margin-bottom: 12px;
}
.actor h3 { font-family: var(--display); font-size: 20px; margin: 0 0 4px; color: #fff; letter-spacing: -0.01em; }
.actor-role { color: var(--text-mute); font-size: 11.5px; letter-spacing: 0.08em; text-transform: uppercase; margin: 0 0 14px; }
.actor ul { list-style: none; padding: 0; margin: 0; }
.actor ul li {
  font-size: 13.5px;
  color: var(--text-soft);
  padding: 5px 0;
  border-top: 1px solid var(--line);
}
.actor ul li:first-child { border-top: 0; }

/* Research intelligence loop block */
.research-loop {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr);
  gap: 36px;
  align-items: center;
  margin: 40px 0;
}
.research-text .eyebrow {
  color: var(--violet);
  display: inline-block;
  margin-bottom: 14px;
}
.research-text h3 {
  font-family: var(--display);
  font-size: clamp(20px, 2.2vw, 26px);
  line-height: 1.18;
  letter-spacing: -0.015em;
  margin: 0 0 18px;
  color: #fff;
}
.research-text p {
  color: var(--text-soft);
  font-size: 14.5px;
  margin: 0 0 14px;
  line-height: 1.7;
}
.research-text p:last-child { margin-bottom: 0; }
.research-loop .diagram-frame {
  padding: 6px;
  border-radius: 16px;
}
.research-loop .diagram-frame img { border-radius: 11px; }
.research-loop .diagram-frame figcaption {
  position: static;
  margin: 12px 4px 0;
  font-size: 11.5px;
}

@media (max-width: 980px) {
  .research-loop { grid-template-columns: 1fr; }
}

.guardrails { padding: 28px; margin-top: 48px; }
.guardrails h4 { margin: 0 0 18px; font-size: 12.5px; color: var(--text-mute); letter-spacing: 0.04em; }
.guardrail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 10px 24px;
}
.guardrail-grid > div {
  display: flex; flex-direction: column;
  padding: 8px 0;
  border-top: 1px dashed var(--line);
  font-size: 13px;
}
.guardrail-grid > div code { display: inline-block; margin-bottom: 2px; }
.guardrail-grid > div span { color: var(--text-mute); font-size: 12px; }

/* ============================================================
   Governance tiers
   ============================================================ */

.tiers {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 30px;
}
.tier {
  padding: 26px;
  position: relative;
  display: flex; flex-direction: column;
  gap: 12px;
}
.tier::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  pointer-events: none;
  opacity: 0;
  transition: opacity .35s var(--ease);
}
.tier.t1::before { background: linear-gradient(135deg, rgba(0, 217, 255, 0.18), transparent 60%); }
.tier.t2::before { background: linear-gradient(135deg, rgba(167, 139, 250, 0.22), transparent 60%); }
.tier.t3::before { background: linear-gradient(135deg, rgba(245, 158, 11, 0.18), transparent 60%); }
.tier:hover::before { opacity: 0.55; }

.tier-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border-bottom: 1px dashed var(--line);
  padding-bottom: 12px;
}
.tier-tag {
  font-size: 11.5px;
  padding: 4px 10px;
  border-radius: 999px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.tier.t1 .tier-tag { background: rgba(0, 217, 255, 0.12); border: 1px solid rgba(0, 217, 255, 0.35); color: var(--cyan); }
.tier.t2 .tier-tag { background: rgba(167, 139, 250, 0.12); border: 1px solid rgba(167, 139, 250, 0.35); color: var(--violet); }
.tier.t3 .tier-tag { background: rgba(245, 158, 11, 0.12); border: 1px solid rgba(245, 158, 11, 0.35); color: var(--amber); }
.tier-method { font-size: 11px; color: var(--text-mute); }
.tier h3 {
  font-family: var(--display);
  font-size: 19px;
  margin: 0;
  letter-spacing: -0.015em;
  color: #fff;
}
.tier-purpose { font-size: 13.5px; color: var(--text-soft); margin: 0; }

.tier-gates {
  list-style: none;
  padding: 12px 14px;
  margin: 0;
  display: grid;
  gap: 8px;
  background: rgba(7, 9, 30, 0.6);
  border: 1px solid var(--line);
  border-radius: 10px;
}
.tier-gates li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 12.5px;
  color: var(--text-soft);
  gap: 12px;
}
.tier-gates .g-lbl { color: var(--text-mute); }
.tier.t1 .tier-gates .g-val { color: #b9f1ff; }
.tier.t2 .tier-gates .g-val { color: #d6c5ff; }
.tier.t3 .tier-gates .g-val { color: #ffd281; }
.tier-gates .g-val { font-weight: 600; }

.tier-note {
  margin: 0;
  font-size: 13px;
  color: var(--text-soft);
  line-height: 1.6;
}

.risk-overlays {
  padding: 24px 26px;
}
.risk-overlays h4 {
  margin: 0 0 16px;
  font-size: 12px;
  color: var(--text-mute);
  letter-spacing: 0.04em;
}
.ro-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px 24px;
}
.ro-grid > div {
  padding: 8px 0;
  border-top: 1px dashed var(--line);
  display: flex; flex-direction: column;
  font-size: 13px;
}
.ro-grid > div code { display: inline-block; margin-bottom: 4px; }
.ro-grid > div span { color: var(--text-mute); font-size: 12.5px; line-height: 1.55; }

@media (max-width: 940px) {
  .tiers { grid-template-columns: 1fr; }
}

/* ============================================================
   Timeline
   ============================================================ */

.timeline {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
  counter-reset: step;
}
.step {
  position: relative;             /* anchor for ::before accent */
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  grid-template-areas:
    "num title"
    "num body";
  column-gap: 22px;
  row-gap: 6px;
  align-items: center;
  padding: 24px 26px 24px 30px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}
.step:hover { border-color: var(--line-2); transform: translateY(-1px); }
.step::before {
  content: '';
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--grad);
  opacity: 0.85;
  box-shadow: 0 0 12px rgba(0, 217, 255, 0.45);
}
.step::after {
  /* faint connector dot */
  content: '';
  position: absolute;
  left: 9px;
  top: 50%;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan), 0 0 0 4px rgba(0, 217, 255, 0.18);
  transform: translate(-50%, -50%);
}
.step-num {
  grid-area: num;
  align-self: center;
  font-family: var(--mono);
  font-size: 38px;
  color: transparent;
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  text-align: center;
}
.step h4 {
  grid-area: title;
  font-family: var(--display);
  font-size: 18px;
  margin: 0;
  color: #fff;
  letter-spacing: -0.01em;
}
.step p {
  grid-area: body;
  margin: 0;
  color: var(--text-soft);
  font-size: 14px;
  line-height: 1.6;
}

@media (max-width: 640px) {
  .step { grid-template-columns: 56px 1fr; gap: 16px; padding-left: 22px; }
  .step-num { font-size: 30px; }
}

/* ============================================================
   Contracts grid
   ============================================================ */

.contract-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.contract { padding: 24px; }
.ct-tag {
  display: inline-block;
  font-size: 11.5px;
  color: var(--violet);
  background: rgba(167, 139, 250, 0.1);
  border: 1px solid rgba(167, 139, 250, 0.28);
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.contract p { margin: 0; color: var(--text-soft); font-size: 14px; }

/* ============================================================
   Readout (terminal)
   ============================================================ */

.readout {
  position: relative;
  padding: 60px var(--content-pad) 100px;
  max-width: var(--content-w);
  margin: 0 auto;
}
.terminal {
  background: linear-gradient(135deg, #060a1c 0%, #0a0f24 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow:
    0 30px 80px rgba(0,0,0,0.5),
    inset 0 0 0 1px rgba(255,255,255,0.02);
}
.term-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px;
  background: rgba(20, 26, 56, 0.7);
  border-bottom: 1px solid var(--line);
}
.term-bar span { width: 11px; height: 11px; border-radius: 50%; background: #2a3253; }
.term-bar span:nth-child(1) { background: #ff5f56; }
.term-bar span:nth-child(2) { background: #ffbd2e; }
.term-bar span:nth-child(3) { background: #27c93f; }
.term-bar em {
  margin-left: auto;
  font-style: normal;
  color: var(--text-mute);
  font-size: 11.5px;
}
.term-body {
  padding: 22px 26px;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--text-soft);
  white-space: pre;
  overflow-x: auto;
}
.term-body .muted { color: var(--text-mute); }
.term-body .ok { color: var(--cyan); }
.term-body .val { color: #ffd9a0; }

/* ============================================================
   Footer
   ============================================================ */

.site-foot {
  position: relative;
  z-index: 2;
  border-top: 1px solid var(--line);
  background: linear-gradient(to bottom, transparent, rgba(0,0,0,0.4));
  padding: 50px var(--content-pad) 40px;
  margin-top: 40px;
}
.foot-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 30px;
  max-width: var(--content-w);
  margin: 0 auto;
}
.foot-brand { display: flex; align-items: center; gap: 10px; font-family: var(--display); font-weight: 600; font-size: 16px; margin-bottom: 8px; }
.foot-brand svg { width: 26px; height: 26px; filter: drop-shadow(0 0 8px rgba(0, 217, 255, 0.5)); }
.foot-line { color: var(--text-mute); font-size: 12px; margin: 0; }
.foot-title { font-size: 11px; color: var(--text-mute); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 12px; }
.foot-list { list-style: none; padding: 0; margin: 0; font-size: 13.5px; color: var(--text-soft); }
.foot-list li { padding: 3px 0; }
.foot-list .hl { color: #fff; }

@media (max-width: 760px) {
  .foot-grid { grid-template-columns: 1fr 1fr; }
}

/* ============================================================
   Reveal-on-scroll
   ============================================================ */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
  will-change: opacity, transform;
}
.reveal.in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ============================================================
   Lightbox (enlargeable diagrams)
   ============================================================ */

.diagram-frame img,
main img { cursor: zoom-in; }

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(3, 5, 16, 0.92);
  backdrop-filter: blur(14px) saturate(120%);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s var(--ease);
  overflow: hidden;
  touch-action: none;
}
.lightbox.open { opacity: 1; pointer-events: auto; }

.lightbox-img {
  display: block;
  max-width: 96vw;
  max-height: 92vh;
  width: auto;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 40px 120px rgba(0, 0, 0, 0.65), 0 0 0 1px rgba(0, 217, 255, 0.15);
  cursor: zoom-out;
  transform-origin: center center;
  will-change: transform;
  user-select: none;
  -webkit-user-drag: none;
}
.lightbox.zoomed .lightbox-img { cursor: grab; }
.lightbox.zoomed.panning .lightbox-img { cursor: grabbing; }

.lightbox-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--line-2);
  background: rgba(20, 26, 56, 0.75);
  color: var(--text-soft);
  cursor: pointer;
  font-size: 16px;
  font-family: var(--mono);
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}
.lightbox-close:hover {
  color: #fff;
  border-color: var(--cyan);
  transform: scale(1.06);
}

.lightbox-hint {
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-mute);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  background: rgba(20, 26, 56, 0.7);
  border: 1px solid var(--line);
  padding: 6px 12px;
  border-radius: 999px;
  pointer-events: none;
  white-space: nowrap;
}
.lightbox-zoom {
  position: absolute;
  bottom: 18px;
  right: 18px;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--cyan);
  background: rgba(20, 26, 56, 0.7);
  border: 1px solid rgba(0, 217, 255, 0.35);
  padding: 6px 10px;
  border-radius: 6px;
  pointer-events: none;
  min-width: 56px;
  text-align: center;
}

body.lightbox-open { overflow: hidden; }

@media (max-width: 600px) {
  .lightbox-hint { display: none; }
}

/* ============================================================
   Selection
   ============================================================ */

::selection { background: rgba(0, 217, 255, 0.35); color: #fff; }
::-moz-selection { background: rgba(0, 217, 255, 0.35); color: #fff; }

/* ============================================================
   Scrollbar (webkit)
   ============================================================ */

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(to bottom, rgba(0, 217, 255, 0.3), rgba(167, 139, 250, 0.3));
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(to bottom, rgba(0, 217, 255, 0.55), rgba(167, 139, 250, 0.55));
  background-clip: padding-box;
}