:root {
  --bg: #05090c;
  --bg-soft: #081116;
  --panel: #0b171c;
  --panel-2: #0e1c22;
  --text: #edf6f4;
  --muted: #94aaa8;
  --dim: #607573;
  --line: rgba(207, 241, 235, 0.12);
  --line-strong: rgba(207, 241, 235, 0.22);
  --cyan: #55f4dc;
  --cyan-rgb: 85, 244, 220;
  --amber: #f6b85f;
  --violet: #a98cff;
  --rose: #f181a6;
  --green: #86e4a8;
  --danger: #ff887d;
  --radius-sm: 14px;
  --radius: 22px;
  --radius-lg: 36px;
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.32);
  --max: 1260px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scrollbar-color: #315c59 var(--bg); }
body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--text);
  background:
    radial-gradient(circle at 90% 12%, rgba(var(--cyan-rgb), 0.055), transparent 28rem),
    radial-gradient(circle at 5% 45%, rgba(169, 140, 255, 0.045), transparent 34rem),
    var(--bg);
  font-family: "Vazirmatn", "Segoe UI", Tahoma, Arial, sans-serif;
  line-height: 1.85;
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1000;
  pointer-events: none;
  opacity: 0.2;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.075'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }
button { color: inherit; }
::selection { color: #03110f; background: var(--cyan); }
.container { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.main { min-height: 70vh; }
.section { position: relative; padding: 112px 0; }
.section-tight { padding: 72px 0; }
.section[id] { scroll-margin-top: 96px; }
.surface { background: rgba(8, 17, 22, 0.76); border-block: 1px solid var(--line); }
.grid-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.16;
  background-image:
    linear-gradient(rgba(133, 205, 197, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(133, 205, 197, 0.14) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, transparent, #000 18%, #000 82%, transparent);
}
.muted { color: var(--muted); }
.accent { color: var(--cyan); }
.ltr { direction: ltr; }
.mobile-only { display: none; }

.progress {
  position: fixed;
  inset: 0 0 auto;
  height: 2px;
  z-index: 120;
  transform: scaleX(0);
  transform-origin: right;
  background: linear-gradient(90deg, var(--amber), var(--cyan), var(--violet));
  box-shadow: 0 0 18px rgba(var(--cyan-rgb), 0.62);
}
.cursor-glow {
  position: fixed;
  width: 420px;
  height: 420px;
  margin: -210px;
  z-index: 0;
  border-radius: 50%;
  pointer-events: none;
  background: radial-gradient(circle, rgba(var(--cyan-rgb), 0.045), transparent 68%);
}

.site-header {
  position: fixed;
  top: 16px;
  left: 50%;
  z-index: 110;
  width: min(calc(100% - 28px), 1220px);
  height: 68px;
  transform: translateX(-50%);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(5, 12, 15, 0.78);
  backdrop-filter: blur(24px) saturate(1.3);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.25);
  transition: top 0.3s, background 0.3s;
}
.site-header.scrolled { top: 8px; background: rgba(5, 12, 15, 0.93); }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 900; letter-spacing: -0.04em; }
.brand-signal { position: relative; width: 34px; height: 34px; display: grid; place-items: center; }
.brand-signal i { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 18px var(--cyan); }
.brand-signal::before, .brand-signal::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(var(--cyan-rgb), 0.44);
  border-radius: 50%;
  animation: signal 2.8s ease-out infinite;
}
.brand-signal::before { width: 22px; height: 22px; }
.brand-signal::after { width: 34px; height: 34px; animation-delay: 0.6s; }
.nav { display: flex; justify-content: center; align-items: center; gap: 24px; }
.nav a {
  position: relative;
  color: #afc1bf;
  font-size: 0.78rem;
  transition: color 0.25s;
}
.nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -9px;
  width: 100%;
  height: 1px;
  transform: scaleX(0);
  background: var(--cyan);
  transition: transform 0.25s;
}
.nav a:hover, .nav a.active { color: var(--cyan); }
.nav a.active::after { transform: scaleX(1); }
.header-actions { display: flex; align-items: center; gap: 8px; }
.header-index {
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--muted);
  font-size: 0.7rem;
}
.menu-toggle { display: none; border: 0; background: none; font-size: 1.6rem; cursor: pointer; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--cyan);
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}
.eyebrow::before { content: ""; width: 30px; height: 1px; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); }
.display {
  margin: 14px 0 0;
  font-size: clamp(2.4rem, 5vw, 5.3rem);
  line-height: 1.13;
  letter-spacing: -0.065em;
  font-weight: 900;
}
.display .outline { color: transparent; -webkit-text-stroke: 1px rgba(237, 246, 244, 0.5); }
.lead { max-width: 700px; margin: 22px 0 0; color: var(--muted); font-size: 1rem; }
.section-heading {
  display: grid;
  grid-template-columns: 1fr 0.85fr;
  gap: 56px;
  align-items: end;
  margin-bottom: 52px;
}
.section-heading .display { font-size: clamp(2rem, 4vw, 4rem); }
.section-heading .lead { margin: 0; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 10px 20px;
  border: 1px solid var(--line-strong);
  border-radius: 13px;
  background: rgba(7, 17, 21, 0.72);
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.25s, border-color 0.25s, background 0.25s;
}
.btn:hover { transform: translateY(-3px); border-color: rgba(var(--cyan-rgb), 0.46); }
.btn-primary { color: #04110f; background: var(--cyan); border-color: var(--cyan); }
.btn-ghost { background: transparent; }
.buttons { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 30px; }
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border: 1px solid rgba(var(--cyan-rgb), 0.2);
  border-radius: 999px;
  color: var(--cyan);
  background: rgba(var(--cyan-rgb), 0.045);
  font-size: 0.66rem;
}
.tag.amber { color: var(--amber); border-color: rgba(246, 184, 95, 0.22); background: rgba(246, 184, 95, 0.045); }

.page-hero {
  position: relative;
  min-height: 78svh;
  display: flex;
  align-items: flex-end;
  padding: 170px 0 70px;
  overflow: hidden;
  isolation: isolate;
}
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(to bottom, rgba(5, 9, 12, 0.16), transparent 34%, var(--bg) 100%);
}
.page-hero-media { position: absolute; inset: 0; z-index: -3; }
.page-hero-media img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.72) contrast(1.08); }
.page-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(4, 9, 12, 0.64), rgba(4, 9, 12, 0.12) 55%, rgba(4, 9, 12, 0.54));
}
.page-hero-content { position: relative; max-width: 890px; z-index: 2; }
.page-number { color: var(--dim); font: 600 0.72rem/1 monospace; letter-spacing: 0.14em; direction: ltr; margin-bottom: 20px; }
.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 55px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--line);
  backdrop-filter: blur(18px);
}
.hero-meta div { padding: 20px; background: rgba(6, 14, 18, 0.68); }
.hero-meta strong { display: block; font-size: 1.25rem; color: var(--text); }
.hero-meta span { color: var(--muted); font-size: 0.7rem; }

.home-hero { min-height: 100svh; }
.home-hero .page-hero-media img { animation: heroReveal 1.8s ease both; }
.home-hero .display { font-size: clamp(4rem, 9vw, 9rem); line-height: 0.95; }
.home-hero .lead { color: #bccdca; font-size: clamp(1rem, 1.7vw, 1.18rem); }
.home-hero-canvas { position: absolute; inset: 0; z-index: -2; width: 100%; height: 100%; opacity: 0.52; }

.chapter-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--line);
}
.chapter-link {
  min-height: 165px;
  padding: 20px;
  background: var(--bg-soft);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: background 0.3s;
}
.chapter-link:hover { background: rgba(var(--cyan-rgb), 0.055); }
.chapter-link small { color: var(--cyan); font: 0.65rem monospace; direction: ltr; text-align: right; }
.chapter-link strong { font-size: 1rem; }
.chapter-link span { color: var(--muted); font-size: 0.72rem; }

.story-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 22px; }
.feature-card {
  position: relative;
  min-height: 520px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
}
.feature-card > img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; filter: saturate(0.72); transition: transform 0.8s; }
.feature-card:hover > img { transform: scale(1.035); }
.feature-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(4, 9, 12, 0.97), rgba(4, 9, 12, 0.08) 72%); }
.feature-content { position: absolute; inset: auto 0 0; z-index: 2; padding: 32px; }
.feature-content h3 { margin: 12px 0 8px; font-size: clamp(1.5rem, 3vw, 2.5rem); letter-spacing: -0.04em; }
.feature-content p { max-width: 650px; margin: 0; color: #b4c5c2; font-size: 0.85rem; }
.stack { display: grid; gap: 22px; }
.mini-feature {
  min-height: 249px;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
.mini-feature img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.7); }
.mini-feature div { padding: 24px; align-self: center; }
.mini-feature h3 { margin: 10px 0 7px; font-size: 1.12rem; }
.mini-feature p { margin: 0; color: var(--muted); font-size: 0.75rem; }

.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.metric-card {
  min-height: 210px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(145deg, rgba(14, 28, 34, 0.82), rgba(7, 14, 18, 0.72));
}
.metric-value { color: var(--cyan); font: 800 clamp(2rem, 4vw, 3.8rem)/1 monospace; direction: ltr; text-align: right; letter-spacing: -0.08em; }
.metric-card h3 { margin: 40px 0 6px; font-size: 0.95rem; }
.metric-card p { margin: 0; color: var(--muted); font-size: 0.72rem; }

.gallery { display: grid; grid-template-columns: repeat(12, 1fr); grid-auto-rows: 260px; gap: 14px; }
.gallery-item {
  position: relative;
  grid-column: span 4;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
.gallery-item.wide { grid-column: span 8; }
.gallery-item.tall { grid-row: span 2; }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(0.12) saturate(0.72); transition: transform 0.7s, filter 0.4s; }
.gallery-item:hover img { transform: scale(1.04); filter: grayscale(0) saturate(0.95); }
.gallery-caption {
  position: absolute;
  inset: auto 0 0;
  padding: 55px 20px 18px;
  background: linear-gradient(transparent, rgba(4, 9, 12, 0.9));
}
.gallery-caption strong { display: block; font-size: 0.9rem; }
.gallery-caption span { color: var(--muted); font-size: 0.68rem; }

.subnav {
  position: sticky;
  top: 92px;
  z-index: 20;
  display: flex;
  gap: 7px;
  padding: 9px;
  margin: -28px auto 45px;
  width: fit-content;
  max-width: calc(100% - 20px);
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: rgba(6, 14, 18, 0.88);
  backdrop-filter: blur(18px);
}
.subnav button {
  white-space: nowrap;
  padding: 8px 14px;
  border: 1px solid transparent;
  border-radius: 10px;
  color: var(--muted);
  background: transparent;
  font-size: 0.72rem;
  cursor: pointer;
}
.subnav button.active { color: #04110f; background: var(--cyan); }

.museum-timeline { position: relative; max-width: 1050px; margin-inline: auto; }
.museum-timeline::before {
  content: "";
  position: absolute;
  right: 36px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(var(--amber), var(--cyan), var(--violet), var(--rose));
  opacity: 0.55;
}
.timeline-entry {
  --entry: var(--cyan);
  display: grid;
  grid-template-columns: 74px 150px 1fr;
  gap: 22px;
  margin-bottom: 20px;
}
.timeline-dot { width: 17px; height: 17px; margin: 28px auto 0; border: 4px solid var(--bg); border-radius: 50%; background: var(--entry); box-shadow: 0 0 0 1px var(--entry), 0 0 22px var(--entry); z-index: 2; }
.timeline-date { padding-top: 22px; color: var(--entry); font-size: 0.72rem; font-weight: 700; }
.timeline-card {
  display: grid;
  grid-template-columns: 220px 1fr;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(10, 22, 27, 0.82);
  transition: transform 0.3s, border-color 0.3s;
}
.timeline-entry:hover .timeline-card { transform: translateX(-5px); border-color: color-mix(in srgb, var(--entry) 32%, transparent); }
.timeline-image { min-height: 220px; position: relative; overflow: hidden; background: #0e1c22; }
.timeline-image img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.65); transition: transform 0.6s; }
.timeline-entry:hover img { transform: scale(1.04); }
.timeline-body { padding: 23px 25px; }
.timeline-body h3 { margin: 0; font-size: 1.2rem; }
.timeline-body p { margin: 8px 0 18px; color: var(--muted); font-size: 0.8rem; }
.timeline-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.timeline-facts span { padding: 9px; border: 1px solid var(--line); border-radius: 10px; color: #adbfbd; font-size: 0.68rem; }
.timeline-facts b { display: block; color: var(--entry); font-size: 0.62rem; }

.artifact-focus {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  min-height: 560px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
}
.artifact-image { position: relative; min-height: 520px; overflow: hidden; }
.artifact-image img { width: 100%; height: 100%; object-fit: cover; }
.artifact-image::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, transparent 60%, var(--panel)); }
.artifact-copy { display: flex; flex-direction: column; justify-content: center; padding: 48px; }
.artifact-copy h2 { margin: 15px 0; font-size: clamp(2rem, 4vw, 3.8rem); line-height: 1.25; letter-spacing: -0.055em; }
.artifact-copy p { color: var(--muted); font-size: 0.86rem; }
.artifact-data { display: grid; grid-template-columns: 1fr 1fr; margin-top: 25px; gap: 8px; }
.artifact-data div { padding: 13px; border: 1px solid var(--line); border-radius: 11px; }
.artifact-data span { display: block; color: var(--dim); font-size: 0.62rem; }
.artifact-data b { font-size: 0.78rem; }

.lab-layout { display: grid; grid-template-columns: 270px minmax(0, 1fr); gap: 24px; align-items: start; width: 100%; max-width: 100%; overflow: hidden; }
.lab-layout > * { min-width: 0; }
.lab-sidebar {
  position: sticky;
  top: 112px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(10, 22, 27, 0.86);
}
.search-field { position: relative; }
.search-field input {
  width: 100%;
  padding: 12px 42px 12px 13px;
  border: 1px solid var(--line);
  border-radius: 12px;
  outline: none;
  color: var(--text);
  background: #071014;
}
.search-field input:focus { border-color: rgba(var(--cyan-rgb), 0.5); box-shadow: 0 0 0 3px rgba(var(--cyan-rgb), 0.06); }
.search-field span { position: absolute; right: 14px; top: 50%; transform: translateY(-50%); color: var(--muted); }
.filter-list { display: grid; gap: 6px; margin-top: 17px; }
.filter-btn {
  display: flex;
  justify-content: space-between;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid transparent;
  border-radius: 10px;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  text-align: right;
}
.filter-btn:hover { color: var(--text); }
.filter-btn.active { color: var(--cyan); border-color: rgba(var(--cyan-rgb), 0.2); background: rgba(var(--cyan-rgb), 0.055); }
.filter-btn i { color: var(--dim); font-style: normal; font-size: 0.66rem; }
.protocol-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; width: 100%; max-width: 100%; }
.protocol-grid, .protocol-card, .lab-sidebar { min-width: 0; }
.protocol-card {
  position: relative;
  min-height: 250px;
  padding: 22px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(145deg, rgba(14, 28, 34, 0.82), rgba(7, 14, 18, 0.76));
  cursor: pointer;
  transition: transform 0.3s, border-color 0.3s;
}
.protocol-card:hover { transform: translateY(-5px); border-color: rgba(var(--cyan-rgb), 0.34); }
.protocol-card::after { content: attr(data-short); position: absolute; left: 12px; bottom: -19px; color: rgba(255,255,255,0.025); font: 900 4rem monospace; direction: ltr; }
.protocol-head { display: flex; justify-content: space-between; gap: 12px; align-items: start; }
.protocol-name { margin: 0; font: 800 1.2rem "Vazirmatn"; direction: ltr; text-align: right; }
.protocol-year { color: var(--dim); font: 0.65rem monospace; }
.protocol-card p { margin: 35px 0 15px; color: var(--muted); font-size: 0.78rem; }
.protocol-card, .protocol-card * { overflow-wrap: anywhere; }
.protocol-bottom { display: flex; justify-content: space-between; align-items: center; }
.protocol-status { display: inline-flex; align-items: center; gap: 6px; color: var(--green); font-size: 0.66rem; }
.protocol-status::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.protocol-status.legacy { color: var(--amber); }
.empty-state { grid-column: 1 / -1; padding: 70px 20px; border: 1px dashed var(--line-strong); border-radius: var(--radius); color: var(--muted); text-align: center; }

.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(2, 6, 8, 0.78);
  backdrop-filter: blur(16px);
}
.modal.open { display: flex; animation: fade 0.3s; }
.modal-panel {
  width: min(100%, 720px);
  max-height: min(760px, 90vh);
  overflow-y: auto;
  border: 1px solid var(--line-strong);
  border-radius: 28px;
  background: #0a151a;
  box-shadow: var(--shadow);
}
.modal-head { display: flex; justify-content: space-between; align-items: start; padding: 25px; border-bottom: 1px solid var(--line); }
.modal-head h2 { margin: 5px 0 0; direction: ltr; text-align: right; }
.modal-close { width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 11px; background: transparent; cursor: pointer; }
.modal-body { padding: 25px; }
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 22px; }
.detail-grid div { padding: 13px; border: 1px solid var(--line); border-radius: 11px; }
.detail-grid span { display: block; color: var(--dim); font-size: 0.63rem; }
.detail-grid b { font-size: 0.78rem; }
.modal-body h3 { margin: 26px 0 6px; color: var(--cyan); font-size: 0.8rem; }
.modal-body p { margin: 0; color: var(--muted); font-size: 0.84rem; }

.stack-diagram { display: grid; gap: 8px; }
.stack-layer {
  display: grid;
  grid-template-columns: 160px 1fr 1fr;
  gap: 22px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(90deg, rgba(var(--cyan-rgb), 0.055), transparent);
}
.stack-layer strong { color: var(--cyan); }
.stack-layer p { margin: 0; color: var(--muted); font-size: 0.78rem; }
.stack-layer code { color: var(--amber); direction: ltr; text-align: left; }

.simulator {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #071014;
}
.simulator-head { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 24px; border-bottom: 1px solid var(--line); }
.simulator-head h2 { margin: 0; font-size: 1.25rem; }
.simulator-head p { margin: 3px 0 0; color: var(--muted); font-size: 0.72rem; }
.sim-controls { display: flex; align-items: center; gap: 10px; }
.sim-controls label { color: var(--muted); font-size: 0.7rem; }
.sim-controls input { accent-color: var(--cyan); }
.network-stage {
  position: relative;
  min-height: 520px;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 50%, rgba(var(--cyan-rgb), 0.065), transparent 50%),
    linear-gradient(rgba(84, 158, 151, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(84, 158, 151, 0.06) 1px, transparent 1px);
  background-size: auto, 40px 40px, 40px 40px;
}
.net-node {
  position: absolute;
  z-index: 2;
  width: 120px;
  min-height: 76px;
  display: grid;
  place-items: center;
  padding: 12px;
  border: 1px solid rgba(var(--cyan-rgb), 0.3);
  border-radius: 16px;
  background: #0b1a20;
  box-shadow: 0 15px 40px rgba(0,0,0,0.35);
  text-align: center;
}
.net-node b { color: var(--cyan); font: 700 0.72rem monospace; }
.net-node small { color: var(--muted); font-size: 0.62rem; }
.net-node.source { right: 7%; top: 42%; }
.net-node.router-a { right: 34%; top: 18%; }
.net-node.router-b { right: 34%; bottom: 16%; }
.net-node.router-c { left: 34%; top: 41%; }
.net-node.target { left: 7%; top: 42%; }
.net-line { position: absolute; z-index: 1; height: 1px; transform-origin: right center; background: rgba(var(--cyan-rgb), 0.25); }
.net-packet {
  position: absolute;
  z-index: 3;
  width: 18px;
  height: 12px;
  border-radius: 4px;
  background: var(--cyan);
  box-shadow: 0 0 16px var(--cyan);
  opacity: 0;
}
.network-stage.running .net-packet { animation: packetRoute var(--packet-speed, 3.4s) linear infinite; }
.net-packet.p2 { animation-delay: 0.65s !important; background: var(--amber); box-shadow: 0 0 16px var(--amber); }
.net-packet.p3 { animation-delay: 1.3s !important; background: var(--violet); box-shadow: 0 0 16px var(--violet); }
.sim-log { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); background: var(--line); gap: 1px; }
.sim-log div { padding: 16px; background: #0a151a; }
.sim-log span { display: block; color: var(--dim); font-size: 0.62rem; }
.sim-log b { color: var(--text); font: 0.8rem monospace; }

.diagram-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.explainer {
  min-height: 340px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
.explainer h3 { margin: 0; font-size: 1.1rem; }
.explainer > p { margin: 6px 0 28px; color: var(--muted); font-size: 0.75rem; }
.flow { direction: ltr; display: flex; align-items: center; justify-content: center; min-height: 180px; gap: 14px; }
.flow-node { min-width: 90px; padding: 13px; border: 1px solid rgba(var(--cyan-rgb),0.24); border-radius: 12px; text-align: center; color: var(--cyan); font: 0.68rem monospace; background: rgba(var(--cyan-rgb),0.045); }
.flow-arrow { color: var(--dim); }
.dns-demo { display: grid; grid-template-columns: 1fr auto; gap: 12px; margin-top: 30px; }
.dns-demo input { padding: 12px; border: 1px solid var(--line); border-radius: 11px; color: var(--text); background: #071014; outline: none; direction: ltr; }
.dns-result { min-height: 45px; margin-top: 10px; padding: 11px; border: 1px dashed var(--line-strong); border-radius: 10px; color: var(--muted); font: 0.72rem monospace; direction: ltr; }

.future-orbit {
  position: relative;
  min-height: 650px;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.future-orbit::before, .future-orbit::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(var(--cyan-rgb), 0.13);
  border-radius: 50%;
}
.future-orbit::before { width: 530px; height: 530px; }
.future-orbit::after { width: 360px; height: 360px; border-color: rgba(169,140,255,0.16); }
.future-center {
  width: 200px;
  height: 200px;
  z-index: 2;
  display: grid;
  place-items: center;
  border: 1px solid rgba(var(--cyan-rgb),0.25);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--cyan-rgb),0.11), #071014 72%);
  text-align: center;
  box-shadow: 0 0 80px rgba(var(--cyan-rgb),0.08);
}
.future-center strong { font-size: 1.3rem; }
.orbit-item {
  position: absolute;
  z-index: 3;
  width: 170px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(10, 22, 27, 0.9);
  backdrop-filter: blur(12px);
}
.orbit-item b { display: block; color: var(--violet); font-size: 0.78rem; }
.orbit-item span { color: var(--muted); font-size: 0.66rem; }
.orbit-item:nth-child(2) { transform: translate(0,-270px); }
.orbit-item:nth-child(3) { transform: translate(310px,-115px); }
.orbit-item:nth-child(4) { transform: translate(310px,150px); }
.orbit-item:nth-child(5) { transform: translate(0,285px); }
.orbit-item:nth-child(6) { transform: translate(-310px,150px); }
.orbit-item:nth-child(7) { transform: translate(-310px,-115px); }

.scenario {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  background: var(--panel);
}
.scenario-controls { padding: 10px; }
.scenario-controls h3 { margin: 0 0 8px; font-size: 1.2rem; }
.scenario-controls p { color: var(--muted); font-size: 0.75rem; }
.scenario-controls input { width: 100%; accent-color: var(--cyan); margin-top: 25px; }
.year-labels { display: flex; justify-content: space-between; color: var(--dim); font: 0.62rem monospace; }
.scenario-panel {
  min-height: 360px;
  position: relative;
  overflow: hidden;
  border-radius: 22px;
  background: #071014;
}
.scenario-panel img { width: 100%; height: 100%; object-fit: cover; opacity: 0.32; filter: saturate(0.65); }
.scenario-copy { position: absolute; inset: auto 0 0; padding: 90px 30px 28px; background: linear-gradient(transparent, #071014); }
.scenario-copy h3 { margin: 0; font-size: 1.65rem; }
.scenario-copy p { margin: 7px 0 0; color: var(--muted); max-width: 680px; font-size: 0.8rem; }

.credit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.credit-card { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.credit-card img { width: 100%; height: 210px; object-fit: cover; filter: saturate(0.7); }
.credit-body { padding: 19px; }
.credit-body h3 { margin: 0 0 6px; font-size: 0.9rem; }
.credit-body p { margin: 0; color: var(--muted); font-size: 0.68rem; }
.credit-meta { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 13px; }
.credit-link { display: inline-flex; margin-top: 13px; color: var(--cyan); font-size: 0.68rem; }
.source-note { padding: 24px; border: 1px solid rgba(246,184,95,0.25); border-radius: var(--radius); color: #c9b995; background: rgba(246,184,95,0.035); font-size: 0.8rem; }

.site-footer { padding: 70px 0 26px; border-top: 1px solid var(--line); background: #04080a; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 65px; margin-bottom: 55px; }
.footer-brand { font-size: 2.7rem; font-weight: 900; letter-spacing: -0.06em; }
.footer-about { max-width: 500px; color: var(--muted); font-size: 0.8rem; }
.footer-col h4 { margin: 0 0 14px; color: var(--cyan); font-size: 0.72rem; }
.footer-col a { display: block; margin: 7px 0; color: var(--muted); font-size: 0.76rem; }
.footer-col a:hover { color: var(--text); }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--dim); font-size: 0.67rem; }
.back-top {
  position: fixed;
  left: 22px;
  bottom: 22px;
  z-index: 80;
  width: 45px;
  height: 45px;
  border: 1px solid rgba(var(--cyan-rgb),0.25);
  border-radius: 13px;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  background: rgba(7,17,21,0.84);
  backdrop-filter: blur(12px);
  cursor: pointer;
  transition: 0.3s;
}
.back-top.show { opacity: 1; transform: none; pointer-events: auto; }
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.75s, transform 0.75s cubic-bezier(.2,.8,.2,1); }
.reveal.visible { opacity: 1; transform: none; }

@keyframes signal { 0% { opacity: 0.9; transform: scale(0.5); } 100% { opacity: 0; transform: scale(1.35); } }
@keyframes fade { from { opacity: 0; } }
@keyframes heroReveal { from { opacity: 0; transform: scale(1.06); } to { opacity: 1; transform: scale(1); } }
@keyframes packetRoute {
  0% { right: 14%; top: 49%; opacity: 0; }
  6% { opacity: 1; }
  25% { right: 39%; top: 26%; }
  50% { right: 52%; top: 49%; }
  75% { right: 70%; top: 49%; }
  94% { opacity: 1; }
  100% { right: 87%; top: 49%; opacity: 0; }
}

@media (max-width: 1020px) {
  .site-header { grid-template-columns: auto 1fr auto; }
  .nav {
    position: absolute;
    top: 76px;
    inset-inline: 0;
    display: none;
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #071014;
  }
  .nav.open { display: flex; }
  .nav a { padding: 11px; }
  .nav a::after { display: none; }
  .menu-toggle { display: block; justify-self: end; }
  .header-index { display: none; }
  .section-heading, .story-grid, .artifact-focus { grid-template-columns: 1fr; }
  .chapter-strip { grid-template-columns: repeat(3, 1fr); }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .artifact-image::after { background: linear-gradient(to top, var(--panel), transparent 45%); }
  .lab-layout { grid-template-columns: minmax(0, 1fr); }
  .lab-sidebar { position: static; }
  .filter-list { display: flex; max-width: 100%; overflow-x: auto; }
  .filter-btn { width: auto; white-space: nowrap; }
  .filter-btn i { display: none; }
  .credit-grid { grid-template-columns: repeat(2, 1fr); }
  .future-orbit { transform: scale(0.85); margin-block: -50px; }
}

@media (max-width: 760px) {
  .container { width: min(calc(100% - 24px), var(--max)); }
  .section { padding: 82px 0; }
  .site-header { width: calc(100% - 20px); top: 10px; }
  .section-heading { gap: 22px; margin-bottom: 36px; }
  .page-hero { min-height: 720px; padding: 130px 0 45px; }
  .home-hero .display { font-size: clamp(3.7rem, 20vw, 6rem); }
  .hero-meta { grid-template-columns: 1fr; }
  .hero-meta div { display: flex; justify-content: space-between; align-items: center; }
  .chapter-strip { grid-template-columns: 1fr; }
  .chapter-link { min-height: 115px; }
  .story-grid { gap: 14px; }
  .feature-card { min-height: 480px; }
  .mini-feature { grid-template-columns: 1fr; }
  .mini-feature img { height: 190px; }
  .metric-grid, .protocol-grid, .diagram-grid, .credit-grid { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr; grid-auto-rows: 270px; }
  .gallery-item, .gallery-item.wide { grid-column: 1; }
  .gallery-item.tall { grid-row: span 1; }
  .museum-timeline::before { right: 15px; }
  .timeline-entry { grid-template-columns: 32px 1fr; gap: 10px; }
  .timeline-dot { grid-row: 1 / span 2; }
  .timeline-date { grid-column: 2; padding: 10px 4px 0; }
  .timeline-card { grid-column: 2; grid-template-columns: 1fr; }
  .timeline-image { min-height: 200px; }
  .timeline-facts { grid-template-columns: 1fr; }
  .artifact-copy { padding: 28px; }
  .artifact-data { grid-template-columns: 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
  .stack-layer { grid-template-columns: 1fr; gap: 6px; }
  .simulator-head { flex-direction: column; align-items: flex-start; }
  .network-stage { min-width: 680px; }
  .simulator { overflow-x: auto; }
  .simulator-head, .sim-log { min-width: 680px; }
  .sim-log { grid-template-columns: repeat(4, 1fr); }
  .flow { min-width: 500px; justify-content: flex-start; overflow-x: auto; }
  .explainer { overflow: hidden; }
  .future-orbit { min-width: 800px; transform-origin: right center; transform: scale(0.55); margin-block: -140px; }
  .scenario { grid-template-columns: 1fr; padding: 18px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; }
  .cursor-glow { display: none; }
  .mobile-only { display: block; }
}

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