/* ==========================================================================
   ATT&CK RANGE — design system
   A dark-first "range console" aesthetic: deep navy, signal lime, mono data.
   ========================================================================== */

:root {
  color-scheme: dark;
  --font-display: 'Space Grotesk', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'Cascadia Code', Consolas, monospace;

  --bg: #05080f;
  --bg-deep: #03060b;
  --bg-elev: #080e19;
  --panel: #0a1220;
  --panel-2: #0d1727;
  --panel-3: #111e31;
  --line: #17253c;
  --line-2: #22344f;
  --line-3: #2e4668;

  --text: #e7eefb;
  --text-2: #b6c5db;
  --muted: #8397b3;
  --dim: #7186a6;

  --lime: #c8ff4a;
  --lime-2: #a8e62f;
  --lime-ink: #0a1300;
  --lime-soft: rgba(200, 255, 74, 0.12);
  --cyan: #4cd7ff;
  --cyan-soft: rgba(76, 215, 255, 0.12);
  --red: #ff4d6d;
  --red-soft: rgba(255, 77, 109, 0.12);
  --amber: #ffb020;
  --amber-soft: rgba(255, 176, 32, 0.12);
  --green: #3ddc84;
  --green-soft: rgba(61, 220, 132, 0.12);
  --violet: #a78bfa;
  --violet-soft: rgba(167, 139, 250, 0.14);

  --shadow: 0 24px 70px -30px rgba(0, 0, 0, 0.9);
  --shadow-soft: 0 10px 30px -18px rgba(0, 0, 0, 0.8);
  --radius: 14px;
  --radius-sm: 9px;
  --topbar-h: 64px;
  --maxw: 1280px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-io: cubic-bezier(0.65, 0, 0.35, 1);
}

html[data-theme='light'] {
  color-scheme: light;
  --bg: #f2f4f8;
  --bg-deep: #e9edf4;
  --bg-elev: #ffffff;
  --panel: #ffffff;
  --panel-2: #f7f9fc;
  --panel-3: #eef2f8;
  --line: #dde4ee;
  --line-2: #c8d3e2;
  --line-3: #aab9cd;

  --text: #0a1424;
  --text-2: #2a3a51;
  --muted: #55677f;
  --dim: #6a7a90;

  --lime: #b7f000;
  --lime-2: #9ad400;
  --lime-ink: #101a00;
  --lime-soft: rgba(120, 170, 0, 0.14);
  --cyan: #007e9e;
  --cyan-soft: rgba(0, 126, 158, 0.1);
  --red: #d61f45;
  --red-soft: rgba(214, 31, 69, 0.09);
  --amber: #a86400;
  --amber-soft: rgba(168, 100, 0, 0.1);
  --green: #0b7a44;
  --green-soft: rgba(11, 122, 68, 0.1);
  --violet: #6d4ed6;
  --violet-soft: rgba(109, 78, 214, 0.1);
  --shadow: 0 24px 60px -34px rgba(18, 38, 66, 0.4);
  --shadow-soft: 0 8px 24px -16px rgba(18, 38, 66, 0.35);
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; overflow-x: hidden; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.55 var(--font-display);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(1000px 620px at 78% -12%, rgba(200, 255, 74, 0.075), transparent 62%),
    radial-gradient(900px 600px at -8% 8%, rgba(76, 215, 255, 0.06), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
}
html[data-theme='light'] body::before {
  background:
    radial-gradient(1000px 620px at 78% -12%, rgba(140, 200, 0, 0.16), transparent 62%),
    radial-gradient(900px 600px at -8% 8%, rgba(0, 126, 158, 0.07), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
}
html[data-theme='light'] .hero h1 .hl { color: #355c00; }
html[data-theme='light'] .hero h1 .hl::after { background: #b7f000; opacity: 0.55; }
html[data-theme='light'] .eyebrow::before { background: #5c8a00; }
html[data-theme='light'] .brand-mark { color: #476f00; filter: none; }
html[data-theme='light'] .brand-slash { color: #5c8a00; }
html[data-theme='light'] .live-dot { background: #3f7a00; box-shadow: 0 0 0 3px rgba(63, 122, 0, 0.15); }
html[data-theme='light'] .filter.is-on { color: #3f6b00; }
html[data-theme='light'] .rail-back:hover { color: #3f6b00; }
html[data-theme='light'] .hero-visual::after { opacity: 0.22; }
h1, h2, h3, h4, p, dl, dd, dt, figure { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
input { font: inherit; color: inherit; }
svg { display: block; }
img { max-width: 100%; display: block; }
::selection { background: var(--lime); color: var(--lime-ink); }

:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  transform: translateY(-160%);
  background: var(--lime);
  color: var(--lime-ink);
  padding: 10px 16px;
  border-radius: 8px;
  font: 600 13px var(--font-mono);
  transition: transform 0.2s var(--ease);
}
.skip-link:focus { transform: none; }

/* ---------- shared atoms ---------- */
.mono { font-family: var(--font-mono); }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font: 500 10.5px/1 var(--font-mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dim);
}
.eyebrow::before {
  content: '';
  width: 16px;
  height: 1px;
  background: var(--lime);
  opacity: 0.8;
}
.eyebrow.no-rule::before { display: none; }
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border: 1px solid var(--line-2);
  border-radius: 5px;
  font: 500 10.5px/1.2 var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--text-2);
  white-space: nowrap;
}
.tag .dot { width: 5px; height: 5px; border-radius: 50%; background: var(--tc, var(--lime)); }
.tag.is-soft { background: var(--panel-2); border-color: var(--line); color: var(--muted); }
.tactic {
  --tc: var(--lime);
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 9px;
  border-radius: 5px;
  border: 1px solid color-mix(in srgb, var(--tc) 32%, transparent);
  background: color-mix(in srgb, var(--tc) 10%, transparent);
  color: color-mix(in srgb, var(--tc) 72%, var(--text));
  font: 500 10.5px/1.2 var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}
.tactic::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--tc);
  box-shadow: 0 0 8px var(--tc);
}
.id-chip {
  font: 500 11px/1 var(--font-mono);
  color: var(--muted);
  letter-spacing: 0.02em;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  height: 42px;
  padding: 0 18px;
  border-radius: 9px;
  border: 1px solid var(--line-2);
  background: var(--panel-2);
  color: var(--text);
  font: 500 13px/1 var(--font-display);
  letter-spacing: 0.01em;
  transition: border-color 0.18s, background 0.18s, transform 0.18s, color 0.18s;
  white-space: nowrap;
}
.btn:hover { border-color: var(--line-3); background: var(--panel-3); }
.btn:active { transform: translateY(1px); }
.btn svg { flex: none; }
.btn-primary {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--lime-ink);
  font-weight: 600;
}
.btn-primary:hover { background: color-mix(in srgb, var(--lime) 88%, white); border-color: var(--lime-2); }
.btn-ghost { background: transparent; border-color: var(--line-2); }
.btn-ghost:hover { background: var(--panel-2); }
.btn-sm { height: 34px; padding: 0 12px; font-size: 12px; border-radius: 7px; }
.btn-danger { border-color: color-mix(in srgb, var(--red) 40%, transparent); color: var(--red); }
.btn-danger:hover { background: var(--red-soft); }

.icon-btn {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  border: 1px solid transparent;
  color: var(--text-2);
  transition: background 0.18s, border-color 0.18s, color 0.18s;
}
.icon-btn:hover { background: var(--panel-2); border-color: var(--line); color: var(--text); }
#theme-toggle .i-sun { display: none; }
html[data-theme='dark'] #theme-toggle .i-moon { display: none; }
html[data-theme='dark'] #theme-toggle .i-sun { display: block; }

kbd {
  display: inline-grid;
  place-items: center;
  min-width: 20px;
  height: 20px;
  padding: 0 5px;
  border: 1px solid var(--line-2);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: var(--panel-2);
  color: var(--muted);
  font: 500 10px/1 var(--font-mono);
}

/* ---------- topbar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 28px;
  height: var(--topbar-h);
  padding: 0 clamp(16px, 3vw, 34px);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  backdrop-filter: blur(14px) saturate(1.2);
}
.brand { display: flex; align-items: center; gap: 11px; flex: none; }
.brand-mark { color: var(--lime); display: grid; place-items: center; filter: drop-shadow(0 0 10px rgba(200, 255, 74, 0.35)); }
.brand-words { display: flex; flex-direction: column; gap: 2px; line-height: 1; }
.brand-words b {
  font: 700 16px/1 var(--font-display);
  letter-spacing: 0.02em;
}
.brand-slash { color: var(--lime); padding: 0 1px; }
.brand-words i {
  font: 500 8.5px/1 var(--font-mono);
  font-style: normal;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--dim);
}
.nav { display: flex; gap: 4px; margin-left: 8px; }
.nav a {
  position: relative;
  padding: 9px 12px;
  border-radius: 7px;
  font: 500 13px/1 var(--font-display);
  color: var(--muted);
  transition: color 0.16s, background 0.16s;
}
.nav a:hover { color: var(--text); background: var(--panel-2); }
.nav a.is-active { color: var(--text); }
.nav a.is-active::after {
  content: '';
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 2px;
  height: 2px;
  background: var(--lime);
  border-radius: 2px;
}
.top-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }
.searchbtn {
  display: flex;
  align-items: center;
  gap: 9px;
  height: 36px;
  width: clamp(170px, 20vw, 260px);
  padding: 0 8px 0 12px;
  border: 1px solid var(--line-2);
  border-radius: 8px;
  background: var(--panel-2);
  color: var(--muted);
  font: 400 12.5px var(--font-display);
  transition: border-color 0.18s, color 0.18s, background 0.18s;
}
.searchbtn:hover { border-color: var(--line-3); color: var(--text-2); }
.searchbtn span { flex: 1; text-align: left; }
.searchbtn kbd { background: var(--bg-elev); }
.vtag {
  padding: 5px 8px;
  border: 1px dashed var(--line-2);
  border-radius: 5px;
  color: var(--dim);
  font: 500 9.5px/1 var(--font-mono);
  letter-spacing: 0.08em;
  white-space: nowrap;
}

/* ---------- view / footer ---------- */
.view { min-height: calc(100vh - var(--topbar-h)); }
.boot {
  min-height: 60vh;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 18px;
  color: var(--muted);
  font: 400 12px var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.boot-ring {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 2px solid var(--line-2);
  border-top-color: var(--lime);
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.sitefoot {
  border-top: 1px solid var(--line);
  background: var(--bg-elev);
}
.foot-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 26px clamp(16px, 3vw, 34px) 34px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: var(--dim);
  font: 400 11.5px/1.6 var(--font-mono);
}
.foot-inner a { color: var(--muted); border-bottom: 1px solid var(--line-2); }
.foot-inner a:hover { color: var(--lime); border-color: var(--lime); }
.foot-links { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.dotsep { opacity: 0.5; }
body.is-sim .sitefoot, body.is-sim .nav { display: none; }

/* ==========================================================================
   HOME
   ========================================================================== */
.home { max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(16px, 3vw, 34px) 80px; }

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
  padding: clamp(42px, 6vw, 82px) 0 clamp(38px, 5vw, 64px);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0 -34px auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-2) 18%, var(--line-2) 82%, transparent);
  top: 0;
}
.hero-copy { position: relative; z-index: 1; }
.hero h1 {
  margin: 18px 0 0;
  font: 600 clamp(38px, 5.4vw, 68px)/0.98 var(--font-display);
  letter-spacing: -0.035em;
  text-wrap: balance;
}
.hero h1 .hl { color: var(--lime); position: relative; white-space: nowrap; }
.hero h1 .hl::after {
  content: '';
  position: absolute;
  left: 2%;
  right: 2%;
  bottom: 0.04em;
  height: 0.09em;
  background: var(--lime);
  opacity: 0.28;
}
.hero-sub {
  margin-top: 22px;
  max-width: 54ch;
  color: var(--text-2);
  font-size: clamp(15px, 1.25vw, 17px);
  line-height: 1.62;
}
.hero-sub b { color: var(--text); font-weight: 500; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; align-items: center; }
.hero-note { font: 400 11px/1.5 var(--font-mono); color: var(--dim); margin-top: 18px; display: flex; align-items: center; gap: 8px; }
.hero-note .live-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 3px var(--green-soft); animation: pulse-dot 2.4s infinite; }
@keyframes pulse-dot { 50% { box-shadow: 0 0 0 6px transparent; } }

.hero-visual {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--panel) 88%, transparent), var(--panel));
  box-shadow: var(--shadow);
  overflow: hidden;
}
.hero-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(var(--line-2) 0.6px, transparent 0.6px);
  background-size: 12px 12px;
  opacity: 0.35;
  mask-image: radial-gradient(70% 70% at 50% 40%, #000 20%, transparent 100%);
}
.hv-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
  font: 500 10px var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
}
.hv-head .dots { display: flex; gap: 4px; margin-right: 4px; }
.hv-head .dots i { width: 7px; height: 7px; border-radius: 50%; background: var(--line-3); }
.hv-head .dots i:first-child { background: var(--red); opacity: 0.7; }
.hv-head .dots i:nth-child(2) { background: var(--amber); opacity: 0.7; }
.hv-head .dots i:last-child { background: var(--green); opacity: 0.7; }
.hv-head .hv-status { margin-left: auto; color: var(--lime); display: flex; align-items: center; gap: 6px; }
.hv-head .hv-status::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 8px var(--lime); }
.hero-visual svg { width: 100%; height: auto; position: relative; z-index: 1; }
.hv-foot {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  background: var(--panel-2);
}
.hv-foot div { padding: 10px 12px; border-right: 1px solid var(--line); }
.hv-foot div:last-child { border-right: 0; }
.hv-foot dt { font: 500 8.5px var(--font-mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--dim); }
.hv-foot dd { margin-top: 4px; font: 500 12px var(--font-mono); color: var(--text-2); }
.hv-foot dd em { color: var(--lime); font-style: normal; }

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel);
}
.stat { padding: 18px 20px; border-right: 1px solid var(--line); position: relative; }
.stat:last-child { border-right: 0; }
.stat b { display: block; font: 600 28px/1 var(--font-display); letter-spacing: -0.03em; }
.stat b small { font-size: 14px; color: var(--dim); font-weight: 500; }
.stat span { display: block; margin-top: 7px; font: 500 9.5px var(--font-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--dim); }

.section { padding-top: clamp(46px, 5vw, 74px); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 22px; }
.section-head h2 { font: 600 clamp(24px, 2.6vw, 33px)/1.1 var(--font-display); letter-spacing: -0.02em; }
.section-head p { color: var(--muted); font-size: 14px; margin-top: 8px; max-width: 62ch; }
.section-head .right { display: flex; gap: 8px; flex: none; }

.filters { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 22px; }
.filter {
  padding: 7px 11px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  font: 500 10.5px/1 var(--font-mono);
  letter-spacing: 0.04em;
  transition: all 0.16s;
}
.filter:hover { border-color: var(--line-3); color: var(--text-2); }
.filter.is-on { background: var(--lime-soft); border-color: color-mix(in srgb, var(--lime) 45%, transparent); color: var(--lime); }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.tech-card {
  --tc: var(--lime);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 13px;
  padding: 19px 19px 17px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(165deg, var(--panel-2), var(--panel));
  overflow: hidden;
  transition: transform 0.22s var(--ease), border-color 0.22s, box-shadow 0.22s;
  min-height: 240px;
}
.tech-card::before {
  content: '';
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: linear-gradient(90deg, var(--tc), transparent 72%);
  opacity: 0.85;
}
.tech-card::after {
  content: '';
  position: absolute;
  right: -40px;
  top: -40px;
  width: 130px;
  height: 130px;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--tc) 14%, transparent), transparent 70%);
  opacity: 0;
  transition: opacity 0.25s;
}
.tech-card:hover { transform: translateY(-3px); border-color: var(--line-2); box-shadow: var(--shadow-soft); }
.tech-card:hover::after { opacity: 1; }
.tech-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.tech-top .idx { font: 500 10px var(--font-mono); color: var(--dim); letter-spacing: 0.1em; }
.tech-card h3 { font: 600 19px/1.18 var(--font-display); letter-spacing: -0.015em; }
.tech-card h3 a::after { content: ''; position: absolute; inset: 0; }
.tech-card p { color: var(--muted); font-size: 13px; line-height: 1.55; }
.tech-meta { margin-top: auto; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font: 400 10.5px var(--font-mono); color: var(--dim); }
.tech-meta .sep { width: 3px; height: 3px; border-radius: 50%; background: var(--line-3); }
.tech-go {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font: 500 10.5px var(--font-mono);
  color: var(--text-2);
  letter-spacing: 0.06em;
}
.tech-card:hover .tech-go { color: var(--lime); }
.tech-go svg { transition: transform 0.2s var(--ease); }
.tech-card:hover .tech-go svg { transform: translateX(3px); }

.chain-section { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: clamp(24px, 4vw, 56px); align-items: start; }
.steps-list { counter-reset: s; display: flex; flex-direction: column; }
.steps-list li {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 14px;
  padding: 15px 0;
  border-top: 1px solid var(--line);
}
.steps-list li:last-child { border-bottom: 1px solid var(--line); }
.steps-list .n {
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-2);
  border-radius: 6px;
  font: 500 10.5px var(--font-mono);
  color: var(--lime);
  background: var(--lime-soft);
}
.steps-list h4 { font: 600 15px/1.3 var(--font-display); }
.steps-list p { color: var(--muted); font-size: 13px; margin-top: 4px; line-height: 1.5; }

.quote-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 24px;
}
.quote-card .eyebrow { margin-bottom: 12px; }
.quote-card blockquote { font: 400 16px/1.6 var(--font-display); color: var(--text-2); }
.quote-card blockquote b { color: var(--text); }
.quote-card .by { display: flex; gap: 10px; align-items: center; margin-top: 18px; font: 500 10px var(--font-mono); color: var(--dim); letter-spacing: 0.1em; text-transform: uppercase; }
.quote-card .by i { width: 18px; height: 1px; background: var(--lime); }

.cta-band {
  margin-top: clamp(50px, 6vw, 84px);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: clamp(26px, 4vw, 46px);
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  background:
    radial-gradient(600px 200px at 85% 0%, var(--lime-soft), transparent 70%),
    linear-gradient(160deg, var(--panel-2), var(--panel));
  overflow: hidden;
}
.cta-band h2 { font: 600 clamp(24px, 2.8vw, 36px)/1.1 var(--font-display); letter-spacing: -0.02em; max-width: 18ch; }
.cta-band p { color: var(--muted); font-size: 14px; margin-top: 8px; max-width: 52ch; }

/* ==========================================================================
   MATRIX
   ========================================================================== */
.page { max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(16px, 3vw, 34px) 90px; }
.page-head { padding: clamp(38px, 5vw, 66px) 0 30px; }
.page-head h1 { margin-top: 14px; font: 600 clamp(32px, 4vw, 52px)/1.02 var(--font-display); letter-spacing: -0.03em; }
.page-head p { margin-top: 14px; color: var(--muted); max-width: 70ch; font-size: 15px; }
.matrix-wrap { overflow-x: auto; padding-bottom: 14px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.matrix { display: flex; min-width: 1180px; }
.mcol { flex: 1 0 150px; border-right: 1px solid var(--line); padding: 0 0 10px; }
.mcol:last-child { border-right: 0; }
.mcol-head {
  position: sticky;
  top: 0;
  padding: 12px 11px 11px;
  border-bottom: 1px solid var(--line);
  border-top: 2px solid var(--tc);
  background: var(--panel-2);
}
.mcol-head b { display: block; font: 600 11.5px/1.2 var(--font-display); letter-spacing: 0.01em; }
.mcol-head span { display: block; margin-top: 4px; font: 500 9px var(--font-mono); color: var(--dim); letter-spacing: 0.08em; }
.mcol-body { padding: 8px; display: flex; flex-direction: column; gap: 5px; }
.tile {
  display: block;
  padding: 7px 8px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--panel-2);
  font-size: 10.5px;
  line-height: 1.3;
  color: var(--muted);
  transition: all 0.15s;
}
.tile .tid { display: block; font: 500 8.5px var(--font-mono); color: var(--dim); letter-spacing: 0.02em; margin-bottom: 2px; }
.tile.is-live {
  border-color: color-mix(in srgb, var(--tc) 38%, transparent);
  background: color-mix(in srgb, var(--tc) 9%, var(--panel-2));
  color: var(--text);
}
.tile.is-live .tid { color: color-mix(in srgb, var(--tc) 72%, var(--text)); }
.tile.is-live:hover { border-color: var(--tc); background: color-mix(in srgb, var(--tc) 16%, var(--panel-2)); transform: translateX(1px); }
.tile.is-planned { opacity: 0.62; }
.matrix-legend { display: flex; gap: 18px; align-items: center; margin-top: 14px; font: 400 10.5px var(--font-mono); color: var(--dim); flex-wrap: wrap; }
.matrix-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; }

/* ==========================================================================
   ABOUT
   ========================================================================== */
.about-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr); gap: clamp(28px, 4vw, 60px); align-items: start; }
.prose h2 { font: 600 24px/1.2 var(--font-display); letter-spacing: -0.015em; margin: 38px 0 12px; }
.prose h2:first-child { margin-top: 0; }
.prose p { color: var(--text-2); font-size: 14.5px; line-height: 1.7; margin-bottom: 13px; }
.prose code { font: 500 12.5px var(--font-mono); background: var(--panel-2); border: 1px solid var(--line); padding: 1px 5px; border-radius: 4px; color: var(--lime); }
.prose ul.bullets { margin: 0 0 16px; display: flex; flex-direction: column; gap: 9px; }
.prose ul.bullets li { position: relative; padding-left: 20px; color: var(--text-2); font-size: 14px; }
.prose ul.bullets li::before { content: ''; position: absolute; left: 2px; top: 9px; width: 6px; height: 6px; border-radius: 1px; background: var(--lime); transform: rotate(45deg); }
.aside-card { position: sticky; top: calc(var(--topbar-h) + 22px); border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); padding: 20px; }
.aside-card h3 { font: 600 14px var(--font-display); }
.aside-card dl { margin-top: 14px; display: flex; flex-direction: column; }
.aside-card dl div { display: flex; justify-content: space-between; gap: 14px; padding: 9px 0; border-top: 1px solid var(--line); font-size: 12px; }
.aside-card dt { color: var(--dim); font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.04em; }
.aside-card dd { color: var(--text-2); text-align: right; }

/* ==========================================================================
   SIMULATOR SHELL
   ========================================================================== */
.sim {
  display: grid;
  grid-template-columns: 286px minmax(0, 1fr) 392px;
  grid-template-rows: minmax(0, 1fr) auto;
  height: calc(100vh - var(--topbar-h));
  background: var(--bg);
}
.rail {
  grid-row: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
  border-right: 1px solid var(--line);
  background: var(--bg-elev);
}
.rail-scroll {
  overflow-y: auto;
  min-height: 0;
  flex: 1;
  padding-bottom: 16px;
  -webkit-mask-image: linear-gradient(to bottom, #000 calc(100% - 20px), transparent);
  mask-image: linear-gradient(to bottom, #000 calc(100% - 20px), transparent);
}
.rail-head { padding: 16px 16px 13px; border-bottom: 1px solid var(--line); }
.rail-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font: 500 10px var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 14px;
}
.rail-back:hover { color: var(--lime); }
.rail-tech { display: flex; flex-direction: column; gap: 8px; }
.rail-tech .id-chip { color: var(--lime); font-size: 10.5px; }
.rail-tech h1 { font: 600 21px/1.14 var(--font-display); letter-spacing: -0.02em; }
.rail-meta { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.rail-actions { padding: 13px 16px; border-bottom: 1px solid var(--line); display: flex; flex-direction: column; gap: 8px; }
.rail-facts { padding: 14px 16px 18px; display: grid; gap: 9px; border-top: 1px solid var(--line); }
.rail-facts div { display: flex; justify-content: space-between; gap: 10px; font-size: 11.5px; }
.rail-facts dt { color: var(--dim); font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.05em; text-transform: uppercase; }
.rail-facts dd { color: var(--text-2); text-align: right; }

.steps { padding: 12px 10px 18px; }
.steps-head { display: flex; align-items: center; justify-content: space-between; padding: 0 8px 10px; }
.steps-head span { font: 500 9.5px var(--font-mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--dim); }
.steps-head b { font: 500 9.5px var(--font-mono); color: var(--muted); }
.step-item {
  position: relative;
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 10px;
  width: 100%;
  text-align: left;
  padding: 9px 8px;
  border-radius: 7px;
  color: var(--muted);
  transition: background 0.16s, color 0.16s;
}
.step-item:hover { background: var(--panel-2); color: var(--text-2); }
.step-item .sn {
  position: relative;
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 5px;
  border: 1px solid var(--line-2);
  font: 500 10px var(--font-mono);
  background: var(--bg-elev);
  z-index: 1;
  transition: all 0.18s;
}
.step-item:not(:last-child) .sn::after {
  content: '';
  position: absolute;
  top: 25px;
  left: 50%;
  width: 1px;
  height: calc(100% + 22px);
  background: var(--line);
  z-index: -1;
}
.step-item .st { padding-top: 2px; }
.step-item .st b { display: block; font: 500 12.5px/1.3 var(--font-display); color: inherit; }
.step-item .st span { display: block; margin-top: 2px; font: 400 9.5px var(--font-mono); color: var(--dim); letter-spacing: 0.03em; text-transform: uppercase; }
.step-item.is-done { color: var(--text-2); }
.step-item.is-done .sn { background: var(--green-soft); border-color: color-mix(in srgb, var(--green) 45%, transparent); color: var(--green); }
.step-item.is-active { background: var(--panel-2); color: var(--text); }
.step-item.is-active .sn { background: var(--lime); border-color: var(--lime); color: var(--lime-ink); box-shadow: 0 0 0 3px var(--lime-soft); }
.step-item.is-active .st b { font-weight: 600; }

.center { grid-row: 1; display: flex; flex-direction: column; min-width: 0; min-height: 0; position: relative; }
.stage-wrap { position: relative; flex: 1; min-height: 0; display: flex; flex-direction: column; padding: 14px 14px 0; }
.stage-frame {
  position: relative;
  flex: 1;
  min-height: 0;
  border: 1px solid var(--line);
  border-radius: 12px 12px 0 0;
  border-bottom: 0;
  background:
    radial-gradient(700px 340px at 50% 0%, color-mix(in srgb, var(--panel-2) 90%, transparent), transparent 70%),
    var(--panel);
  overflow: hidden;
}
.stage-frame::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 46px 46px;
  opacity: 0.32;
  mask-image: radial-gradient(80% 80% at 50% 40%, #000 10%, transparent 100%);
}
.stage-top {
  position: absolute;
  z-index: 3;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 13px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel) 72%, transparent);
  backdrop-filter: blur(6px);
  font: 500 9.5px var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
}
.stage-top .lamp { width: 6px; height: 6px; border-radius: 50%; background: var(--red); box-shadow: 0 0 9px var(--red); animation: pulse-dot 1.8s infinite; }
.stage-top .right { margin-left: auto; display: flex; gap: 12px; align-items: center; }
.stage-top .right b { color: var(--text-2); font-weight: 500; }
.stage-zoom {
  color: var(--lime);
  font: 500 9px var(--font-mono);
  letter-spacing: 0.04em;
  padding: 1px 5px;
  border: 1px solid color-mix(in srgb, var(--lime) 28%, transparent);
  border-radius: 3px;
}
.stage-host { color: var(--lime); }
.stage-svg { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 1; }
.stage-ui { position: absolute; inset: 0; z-index: 2; pointer-events: none; }
.stage-ui > * { pointer-events: auto; }

/* console overlay */
.console {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 12px;
  z-index: 4;
  border: 1px solid var(--line-2);
  border-radius: 9px;
  background: color-mix(in srgb, var(--bg-deep) 92%, transparent);
  backdrop-filter: blur(8px);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}
.console.is-on { opacity: 1; transform: none; }
.console.is-idle .term-body { max-height: 26px; padding: 6px 11px 8px; }
.console.is-idle { box-shadow: none; }
.term-idle {
  color: var(--dim);
  font: 400 10.5px var(--font-mono);
  letter-spacing: 0.04em;
  padding: 2px 0;
}
.term-head {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 10px;
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
  font: 500 9.5px var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--dim);
}
.term-head .who { color: var(--text-2); }
.term-head .badge { padding: 2px 5px; border-radius: 3px; background: var(--red-soft); color: var(--red); font-size: 8.5px; letter-spacing: 0.1em; }
.term-head .right { margin-left: auto; color: var(--dim); }
.term-body {
  padding: 9px 11px 10px;
  font: 400 11.5px/1.65 var(--font-mono);
  color: var(--text-2);
  max-height: 132px;
  overflow-y: auto;
  scrollbar-width: thin;
}
.term-body .ln { display: flex; gap: 8px; flex-wrap: wrap; white-space: pre-wrap; word-break: break-word; }
.term-body .ps { color: var(--lime); flex: none; }
.term-body .cmd { color: var(--text); }
.term-out { color: var(--muted); padding-left: 18px; white-space: pre-wrap; word-break: break-word; margin-top: 1px; }
.term-body .cmd .caret {
  display: inline-block;
  width: 6px;
  height: 12px;
  margin-left: 2px;
  vertical-align: -1px;
  background: var(--lime);
  animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* lineage */
.lineage {
  flex: none;
  display: flex;
  align-items: center;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: 0 0 12px 12px;
  background: var(--bg-elev);
  padding: 8px 12px;
  min-height: 52px;
  overflow-x: auto;
  scrollbar-width: thin;
}
.lineage-label { flex: none; font: 500 9px var(--font-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--dim); margin-right: 12px; }
.proc-chip {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 25px;
  padding: 0 8px;
  border: 1px solid var(--line-2);
  border-radius: 5px;
  background: var(--panel-2);
  font: 500 10.5px var(--font-mono);
  color: var(--text-2);
  animation: chipIn 0.34s var(--ease);
}
.proc-chip .pid { color: var(--dim); font-size: 9px; }
.proc-chip.is-bad { border-color: color-mix(in srgb, var(--red) 38%, transparent); color: var(--red); background: var(--red-soft); }
.proc-chip.is-sys { border-color: color-mix(in srgb, var(--amber) 34%, transparent); color: var(--amber); background: var(--amber-soft); }
.proc-arrow { flex: none; width: 18px; display: grid; place-items: center; color: var(--line-3); }
@keyframes chipIn { from { opacity: 0; transform: translateY(5px) scale(0.96); } }

/* dock */
.dock {
  grid-row: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
  border-left: 1px solid var(--line);
  background: var(--bg-elev);
}
.dock-tabs { display: flex; border-bottom: 1px solid var(--line); padding: 0 8px; flex: none; }
.dock-tab {
  position: relative;
  padding: 14px 10px 12px;
  font: 500 9.5px var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
  transition: color 0.16s;
}
.dock-tab:hover { color: var(--text-2); }
.dock-tab.is-active { color: var(--text); }
.dock-tab.is-active::after { content: ''; position: absolute; left: 8px; right: 8px; bottom: -1px; height: 2px; background: var(--lime); }
.dock-tab .count { margin-left: 5px; font-size: 8.5px; color: var(--dim); }
.dock-body { flex: 1; min-height: 0; overflow-y: auto; overflow-x: hidden; scrollbar-width: thin; }
.dock-pane { display: none; }
.dock-pane.is-on { display: block; }
.dock-head {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-elev) 92%, transparent);
  backdrop-filter: blur(6px);
  font: 500 9px var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
}
.dock-head .right { margin-left: auto; }
.dock-empty { padding: 28px 18px; text-align: center; color: var(--dim); font: 400 11.5px/1.7 var(--font-mono); }
.dock-empty b { display: block; color: var(--text-2); font-weight: 500; margin-bottom: 6px; }

/* telemetry */
.telemetry { display: flex; flex-direction: column; }
.tstep { border-bottom: 1px solid var(--line); }
.tstep-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 13px;
  background: var(--panel);
  font: 500 9px var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dim);
}
.tstep-head b { color: var(--text-2); font-weight: 500; }
.trow {
  position: relative;
  display: grid;
  grid-template-columns: 66px minmax(0, 1fr) auto;
  gap: 8px;
  width: 100%;
  text-align: left;
  padding: 9px 13px 9px 12px;
  border-top: 1px solid color-mix(in srgb, var(--line) 55%, transparent);
  transition: background 0.14s;
  animation: rowIn 0.32s var(--ease);
}
.trow::before {
  content: '';
  position: absolute;
  left: 0;
  top: 7px;
  bottom: 7px;
  width: 2px;
  border-radius: 2px;
  background: var(--sev, var(--line-3));
  opacity: 0.9;
}
.trow:hover { background: var(--panel); }
.trow.is-selected { background: var(--panel-2); }
.trow.is-selected::before { box-shadow: 0 0 10px var(--sev); }
.trow .tt { font: 400 9px/1.5 var(--font-mono); color: var(--dim); padding-top: 2px; white-space: nowrap; }
.trow .tb { min-width: 0; }
.trow .tb b { display: block; font: 500 11.5px/1.35 var(--font-mono); color: var(--text-2); overflow-wrap: anywhere; }
.trow .tb span { display: flex; gap: 5px; flex-wrap: wrap; margin-top: 3px; font: 400 9px var(--font-mono); color: var(--dim); }
.trow .tb span i { font-style: normal; color: var(--muted); }
.trow .src { font: 500 8.5px var(--font-mono); color: var(--dim); letter-spacing: 0.04em; padding-top: 2px; padding-right: 6px; white-space: nowrap; }
.trow .sevdot { display: none; }
@keyframes rowIn { from { opacity: 0; transform: translateX(8px); } }

/* artifact inspector */
.artifact { padding: 14px; }
.art-head { display: flex; align-items: flex-start; gap: 10px; }
.art-head h3 { font: 600 15px/1.3 var(--font-display); }
.art-head .src { margin-top: 3px; font: 400 10px var(--font-mono); color: var(--dim); }
.sev-badge {
  flex: none;
  padding: 3px 7px;
  border-radius: 4px;
  font: 500 8.5px/1.2 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--sev);
  background: color-mix(in srgb, var(--sev) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--sev) 30%, transparent);
}
.art-summary { margin-top: 11px; color: var(--text-2); font-size: 12.5px; line-height: 1.55; }
.art-section { margin-top: 16px; }
.art-section > h4 {
  display: flex;
  align-items: center;
  gap: 7px;
  font: 500 9px var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 8px;
}
.art-section > h4::after { content: ''; flex: 1; height: 1px; background: var(--line); }
.jsonbox {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-deep);
  padding: 10px 11px;
  font: 400 10.5px/1.7 var(--font-mono);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
}
.jsonbox .k { color: var(--cyan); }
.jsonbox .s { color: var(--lime); }
.jsonbox .n { color: var(--amber); }
.jsonbox .p { color: var(--dim); }
.jsonbox .row { white-space: pre; }
.jsonbox .row .indent { color: var(--line-3); }
.insight { display: flex; gap: 9px; padding: 10px 11px; border: 1px solid var(--line); border-left: 2px solid var(--lime); border-radius: 0 7px 7px 0; background: var(--panel); font-size: 11.5px; line-height: 1.55; color: var(--muted); }
.insight b { color: var(--text); font-weight: 500; }
.insight.is-detect { border-left-color: var(--cyan); }
.insight.is-warn { border-left-color: var(--amber); }
.codeblock {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-deep);
  overflow: hidden;
}
.codeblock-head { display: flex; align-items: center; justify-content: space-between; padding: 6px 10px; border-bottom: 1px solid var(--line); font: 500 8.5px var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--dim); }
.codeblock pre { margin: 0; padding: 10px 11px; overflow-x: auto; font: 400 10.5px/1.65 var(--font-mono); color: var(--text-2); }
.codeblock .y-key { color: var(--cyan); }
.codeblock .y-val { color: var(--lime); }
.codeblock .y-com { color: var(--dim); font-style: italic; }
.copy-btn { font: 500 8.5px var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); padding: 3px 6px; border: 1px solid var(--line-2); border-radius: 3px; }
.copy-btn:hover { color: var(--lime); border-color: var(--lime); }

/* defense pane */
.defense { padding: 14px; display: flex; flex-direction: column; gap: 16px; }
.def-card { border: 1px solid var(--line); border-radius: 9px; background: var(--panel); padding: 13px; }
.def-card h4 { font: 600 12.5px var(--font-display); display: flex; align-items: center; gap: 7px; }
.def-card h4 .n { display: grid; place-items: center; width: 18px; height: 18px; border-radius: 4px; background: var(--cyan-soft); color: var(--cyan); font: 500 9px var(--font-mono); flex: none; }
.def-card p { margin-top: 6px; color: var(--muted); font-size: 11.5px; line-height: 1.55; }
.def-card ul { margin-top: 8px; display: flex; flex-direction: column; gap: 6px; }
.def-card li { position: relative; padding-left: 14px; color: var(--text-2); font: 400 10.5px/1.5 var(--font-mono); }
.def-card li::before { content: ''; position: absolute; left: 2px; top: 6px; width: 4px; height: 4px; background: var(--line-3); border-radius: 1px; }
.mit-list { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 9px; }
.mit-list .tag {
  white-space: normal;
  max-width: 100%;
  align-items: flex-start;
  line-height: 1.4;
  text-align: left;
}

/* ==========================================================================
   TRANSPORT
   ========================================================================== */
.transport {
  grid-column: 1 / -1;
  grid-row: 2;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 9px 14px;
  border-top: 1px solid var(--line);
  background: var(--bg-elev);
  min-height: 60px;
}
.tp-btn {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 7px;
  border: 1px solid var(--line-2);
  color: var(--text-2);
  transition: all 0.16s;
  flex: none;
}
.tp-btn:hover { border-color: var(--line-3); color: var(--text); background: var(--panel-2); }
.tp-btn:disabled { opacity: 0.35; pointer-events: none; }
.tp-play {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--lime);
  border-color: var(--lime);
  color: var(--lime-ink);
  box-shadow: 0 0 0 0 var(--lime-soft);
}
.tp-play:hover { background: color-mix(in srgb, var(--lime) 90%, white); color: var(--lime-ink); }
.tp-play .i-pause { display: none; }
.transport.is-playing .tp-play .i-pause { display: block; }
.transport.is-playing .tp-play .i-play { display: none; }
.tp-progress { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 6px; }
.tp-segs { display: flex; gap: 3px; }
.tp-seg { flex: 1; height: 4px; border-radius: 2px; background: var(--line-2); overflow: hidden; position: relative; }
.tp-seg i { position: absolute; inset: 0; width: 0; background: var(--lime); border-radius: 2px; }
.tp-seg.is-done i { width: 100%; }
.tp-seg.is-active i { width: 100%; animation: segFill 1.4s var(--ease-io) infinite alternate; }
@keyframes segFill { from { width: 18%; } to { width: 100%; } }
.tp-info { display: flex; gap: 12px; align-items: baseline; font: 400 9.5px var(--font-mono); color: var(--dim); letter-spacing: 0.04em; }
.tp-info b { color: var(--text-2); font-weight: 500; }
.transport-right { display: flex; align-items: center; gap: 8px; flex: none; }
.lens {
  display: flex;
  padding: 3px;
  border: 1px solid var(--line-2);
  border-radius: 7px;
  background: var(--panel-2);
  gap: 2px;
}
.lens button {
  padding: 5px 9px;
  border-radius: 5px;
  font: 500 9px var(--font-mono);
  letter-spacing: 0.1em;
  color: var(--dim);
  transition: all 0.16s;
}
.lens button.is-on { background: var(--red-soft); color: var(--red); }
.lens button.is-on[data-lens='blue'] { background: var(--cyan-soft); color: var(--cyan); }
.speed-btn { min-width: 42px; height: 30px; border: 1px solid var(--line-2); border-radius: 6px; font: 500 10px var(--font-mono); color: var(--text-2); }
.speed-btn:hover { border-color: var(--line-3); }
.lens-note {
  font: 500 7.5px/1.3 var(--font-mono);
  letter-spacing: 0.1em;
  color: var(--dim);
  text-align: right;
  max-width: 120px;
}
.tp-help { font: 600 13px var(--font-mono); color: var(--muted); }
.tp-help:hover { color: var(--lime); }

.help-pop {
  position: fixed;
  right: 18px;
  bottom: 78px;
  z-index: 90;
  width: min(390px, calc(100vw - 24px));
  border: 1px solid var(--line-3);
  border-radius: 12px;
  background: var(--panel);
  box-shadow: var(--shadow);
  padding: 14px;
}
.help-pop[hidden] { display: none; }
.help-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.help-head b { font: 600 13px var(--font-display); }
.help-head button { color: var(--dim); font: 500 12px var(--font-mono); padding: 4px 6px; }
.help-head button:hover { color: var(--text); }
.help-pop dl div { display: grid; grid-template-columns: 118px 1fr; gap: 10px; padding: 7px 0; border-top: 1px solid var(--line); }
.help-pop dt { font: 500 8.5px/1.5 var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--cyan); }
.help-pop dd { font: 400 11px/1.5 var(--font-display); color: var(--muted); }

.sim.is-blue .brief-red { opacity: 0.45; }
.sim.is-blue .brief-blue {
  background: var(--cyan-soft);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--cyan) 30%, transparent);
}
.sim:not(.is-blue) .brief-red { background: var(--red-soft); }
.sim:not(.is-blue) .brief-blue { opacity: 0.72; }
.sim.is-blue .stage-frame { border-color: color-mix(in srgb, var(--cyan) 40%, var(--line)); }
.sim.is-blue .link { stroke-opacity: 0.6; }
.sim.is-blue .token { opacity: 0.62; }
.sim.is-blue .trow.is-rule { background: var(--cyan-soft); }
.sim.is-blue .trow.is-rule .tt { color: var(--cyan); }
.sim.is-blue .trow.is-rule .src { color: var(--cyan); }
@media (max-width: 1180px) { .lens-note { display: none; } }

/* ==========================================================================
   CMDK + toast
   ========================================================================== */
.cmdk { position: fixed; inset: 0; z-index: 120; display: grid; place-items: start center; padding-top: 12vh; }
.cmdk[hidden] { display: none; }
.cmdk-scrim { position: absolute; inset: 0; background: rgba(2, 5, 10, 0.72); backdrop-filter: blur(3px); animation: fade 0.16s; }
.cmdk-box {
  position: relative;
  width: min(680px, calc(100vw - 32px));
  border: 1px solid var(--line-3);
  border-radius: 12px;
  background: var(--panel);
  box-shadow: var(--shadow);
  overflow: hidden;
  animation: cmdkIn 0.2s var(--ease);
}
@keyframes fade { from { opacity: 0; } }
@keyframes cmdkIn { from { opacity: 0; transform: translateY(-8px) scale(0.99); } }
.cmdk-input { display: flex; align-items: center; gap: 10px; padding: 14px 15px; border-bottom: 1px solid var(--line); color: var(--dim); }
.cmdk-input input { flex: 1; background: none; border: 0; outline: 0; font: 400 15px var(--font-display); color: var(--text); }
.cmdk-input input::placeholder { color: var(--dim); }
.cmdk-list { max-height: min(52vh, 420px); overflow-y: auto; padding: 6px; }
.cmdk-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 9px 10px;
  border-radius: 7px;
  cursor: pointer;
  border: 1px solid transparent;
}
.cmdk-item .ci-ic { width: 26px; height: 26px; display: grid; place-items: center; border: 1px solid var(--line-2); border-radius: 5px; font: 500 8.5px var(--font-mono); color: var(--dim); flex: none; }
.cmdk-item .ci-t { min-width: 0; flex: 1; }
.cmdk-item .ci-t b { display: block; font: 500 13px/1.3 var(--font-display); color: var(--text-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cmdk-item .ci-t span { display: block; font: 400 10px var(--font-mono); color: var(--dim); margin-top: 1px; }
.cmdk-item .ci-k { font: 500 9px var(--font-mono); color: var(--dim); }
.cmdk-item.is-on { background: var(--lime-soft); border-color: color-mix(in srgb, var(--lime) 30%, transparent); }
.cmdk-item.is-on .ci-ic { border-color: var(--lime); color: var(--lime); }
.cmdk-item.is-on .ci-t b { color: var(--text); }
.cmdk-foot { display: flex; gap: 14px; padding: 8px 14px; border-top: 1px solid var(--line); background: var(--panel-2); font: 400 9.5px var(--font-mono); color: var(--dim); }
.cmdk-foot span { display: flex; align-items: center; gap: 5px; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  z-index: 150;
  transform: translate(-50%, 20px);
  padding: 10px 16px;
  border: 1px solid var(--line-3);
  border-radius: 8px;
  background: var(--panel-3);
  color: var(--text);
  font: 500 11.5px var(--font-mono);
  box-shadow: var(--shadow-soft);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s, transform 0.22s var(--ease);
}
.toast.is-on { opacity: 1; transform: translate(-50%, 0); }

/* ==========================================================================
   STAGE SVG
   ========================================================================== */
.zone {
  fill: color-mix(in srgb, var(--panel-2) 40%, transparent);
  stroke: var(--line-2);
  stroke-width: 1;
  stroke-dasharray: 3 5;
}
.zone-label { font: 500 8.5px var(--font-mono); letter-spacing: 2px; fill: var(--dim); text-transform: uppercase; }
.link { fill: none; stroke: var(--line-2); stroke-width: 1.4; transition: opacity 0.3s var(--ease); }
.link.is-offstage { opacity: 0; }
.link.is-active { stroke: var(--lime); stroke-width: 1.8; filter: drop-shadow(0 0 4px rgba(200, 255, 74, 0.5)); }
.link.is-detect { stroke: var(--cyan); }
.node-card { fill: var(--panel-2); stroke: var(--line-2); stroke-width: 1.2; }
.node-frame { fill: none; stroke: transparent; stroke-width: 1.4; }
.node-name { font: 600 13px var(--font-display); fill: var(--text-2); }
.node-role { font: 500 8.5px var(--font-mono); letter-spacing: 0.8px; fill: var(--dim); text-transform: uppercase; }
.node-ip { font: 400 9px var(--font-mono); fill: var(--dim); }
.node-ic { filter: drop-shadow(0 3px 3px rgba(0, 0, 0, 0.32)); }
.node-accent { fill: var(--tc, var(--lime)); opacity: 0.9; }
.node.kind-card .node-card { fill: var(--panel-2); }
.card-accent { fill: var(--tc, var(--lime)); }
.card-title { font: 600 15px var(--font-display); fill: var(--text); }
.card-sub { font: 500 7.5px var(--font-mono); fill: var(--dim); letter-spacing: 1px; text-transform: uppercase; }
.card-line { stroke: var(--line); stroke-width: 1; }
.card-k { font: 400 8.5px var(--font-mono); fill: var(--dim); letter-spacing: 0.8px; text-transform: uppercase; }
.card-v { font: 500 10.5px var(--font-mono); fill: var(--text-2); }
.vault-body { fill: color-mix(in srgb, var(--violet) 9%, var(--panel-2)); stroke: color-mix(in srgb, var(--violet) 45%, var(--line)); }
.vault-top { fill: var(--panel-3); stroke: color-mix(in srgb, var(--violet) 38%, var(--line)); }
.vault-core { fill: var(--violet); opacity: 0.5; filter: url(#soft-glow); }
.vault-title { font: 600 13px var(--font-display); fill: var(--text); letter-spacing: 0.06em; }
.vault-sub { font: 500 7px var(--font-mono); fill: var(--dim); letter-spacing: 1px; text-transform: uppercase; }
.vault-slot { fill: color-mix(in srgb, var(--violet) 12%, transparent); stroke: color-mix(in srgb, var(--violet) 26%, transparent); }
.vault-slot-t { font: 400 8px var(--font-mono); fill: var(--text-2); }
.file-body { fill: var(--panel-2); stroke: color-mix(in srgb, var(--red) 30%, var(--line)); }
.file-name { font: 600 12.5px var(--font-mono); fill: var(--text); }
.file-meta { font: 400 7.5px var(--font-mono); fill: var(--dim); letter-spacing: 0.8px; text-transform: uppercase; }
.file-track { fill: var(--line-2); }
.file-fill { fill: var(--red); opacity: 0.85; transform-box: fill-box; transform-origin: left center; }
.node[data-state='hit'] .file-fill { animation: fileGrow 1.4s var(--ease) both; }
.node[data-state='hit'] .vault-core { animation: vaultPulse 1.3s ease-in-out infinite; }
@keyframes fileGrow { from { transform: scaleX(0.02); } }
@keyframes vaultPulse { 50% { opacity: 0.95; r: 17; } }
.file-size { font: 400 8px var(--font-mono); fill: var(--dim); }
.host-frame { fill: color-mix(in srgb, var(--panel) 55%, transparent); stroke: var(--line-2); stroke-width: 1; stroke-dasharray: 4 6; }
.host-head { fill: var(--panel-2); fill-opacity: 0.85; }
.host-label { font: 600 9.5px var(--font-mono); fill: var(--text-2); letter-spacing: 0.08em; }
.host-sub { font: 500 7px var(--font-mono); fill: var(--dim); letter-spacing: 0.1em; }
.sensor { opacity: 0; transition: opacity 0.3s var(--ease); }
.sensor rect { fill: var(--cyan-soft); stroke: color-mix(in srgb, var(--cyan) 55%, transparent); }
.sensor circle { fill: var(--cyan); }
.sensor text { font: 500 7px var(--font-mono); fill: var(--cyan); letter-spacing: 0.08em; }
.is-blue .sensor { opacity: 1; }
.alert-chip rect { fill: var(--bg-deep); stroke: var(--cyan); stroke-width: 1; }
.alert-chip circle { fill: var(--cyan); }
.alert-chip text { font: 500 7.5px var(--font-mono); fill: var(--cyan); letter-spacing: 0.04em; }
.node-badge rect { fill: var(--panel-3); stroke: var(--line-2); }
.node-badge text { font: 500 7px var(--font-mono); fill: var(--dim); letter-spacing: 0.08em; }
.node-led { fill: var(--line-3); }
.node[data-state='active'] .node-card { stroke: var(--lime); }
.node[data-state='active'] .node-led { fill: var(--lime); filter: drop-shadow(0 0 5px var(--lime)); }
.node[data-state='hit'] .node-card { stroke: var(--red); fill: color-mix(in srgb, var(--red) 7%, var(--panel-2)); }
.node[data-state='hit'] .node-led { fill: var(--red); filter: drop-shadow(0 0 5px var(--red)); }
.node[data-state='blocked'] .node-card { stroke: var(--green); }
.node[data-state='blocked'] .node-led { fill: var(--green); }
.gauge-card { fill: var(--panel-2); stroke: var(--line-2); }
.gauge-title { font: 600 12px var(--font-display); fill: var(--text-2); letter-spacing: 0.04em; }
.gauge-role { font: 500 7px var(--font-mono); fill: var(--dim); letter-spacing: 1px; }
.gauge-track { fill: none; stroke: var(--line-2); stroke-width: 10; stroke-linecap: round; }
.gauge-arc { fill: none; stroke: var(--lime); stroke-width: 10; stroke-linecap: round; transition: stroke 0.3s; }
.gauge-tick { stroke: var(--line-3); stroke-width: 1.2; }
.gauge-needle { stroke: var(--lime); stroke-width: 3; stroke-linecap: round; transition: stroke 0.3s; }
.gauge-hub { fill: var(--panel-3); stroke: var(--line-3); stroke-width: 1; }
.gauge-value { font: 700 27px var(--font-display); fill: var(--lime); }
.gauge-unit { font: 500 7.5px var(--font-mono); fill: var(--dim); letter-spacing: 1px; }
.block-chip rect { fill: var(--bg-deep); stroke: var(--green); stroke-width: 1; }
.block-chip circle { fill: var(--green); }
.block-chip text { font: 500 7.5px var(--font-mono); fill: var(--green); letter-spacing: 0.08em; }
.node[data-state='target'] .node-card { stroke: var(--amber); }
.node[data-state='target'] .node-led { fill: var(--amber); }
.node[data-state='detect'] .node-card { stroke: var(--cyan); }
.node[data-state='detect'] .node-led { fill: var(--cyan); filter: drop-shadow(0 0 5px var(--cyan)); }
.node.is-dim { opacity: 0.38; }
.node.is-offstage { opacity: 0; pointer-events: none; transition: opacity 0.35s var(--ease); }
.node-pulse { fill: none; stroke-width: 1.5; opacity: 0; }
.token-label-bg { fill: var(--bg-deep); stroke-width: 1; }
.token-label { font: 500 8.5px var(--font-mono); letter-spacing: 0.02em; }
.token-core { fill: currentColor; }
.stage-badge { font: 500 7px var(--font-mono); letter-spacing: 1px; }
.callout-bg { fill: var(--bg-deep); stroke: var(--line-3); }
.callout-text { font: 500 9px var(--font-mono); fill: var(--text-2); }

/* ---------- stage canvas, brief, chain ---------- */
.stage-canvas { position: absolute; inset: 0; z-index: 1; }
.stage-canvas::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background:
    linear-gradient(90deg, var(--bg) 0%, transparent 4.5%, transparent 95.5%, var(--bg) 100%),
    linear-gradient(180deg, var(--bg) 0%, transparent 4%, transparent 92%, var(--bg) 100%);
  opacity: 0.85;
}
.stage-canvas .stage-svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.stage-legend {
  position: absolute;
  top: 46px;
  right: 14px;
  z-index: 3;
  display: flex;
  gap: 12px;
  font: 500 8px var(--font-mono);
  letter-spacing: 0.1em;
  color: var(--dim);
}
.stage-legend span { display: inline-flex; align-items: center; gap: 5px; }
.stage-legend i { width: 5px; height: 5px; border-radius: 50%; }
.stage-watermark {
  position: absolute;
  right: 8px;
  bottom: 138px;
  z-index: 0;
  font: 700 148px/0.8 var(--font-display);
  letter-spacing: -0.06em;
  color: var(--line-2);
  opacity: 0.22;
  pointer-events: none;
  user-select: none;
}
body.is-sim { overflow: hidden; }

.brief { padding: 14px 16px 16px; border-bottom: 1px solid var(--line); }
.brief-kicker {
  font: 500 9px var(--font-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lime);
}
.brief-title { margin-top: 7px; font: 600 17px/1.22 var(--font-display); letter-spacing: -0.015em; }
.brief-text { margin-top: 7px; font-size: 12.5px; line-height: 1.58; color: var(--text-2); }
.brief-split { margin-top: 12px; display: grid; gap: 7px; }
.brief-split > div { padding: 7px 9px; border-radius: 0 6px 6px 0; background: var(--panel-2); }
.brief-split > div span {
  display: block;
  font: 500 8px var(--font-mono);
  letter-spacing: 0.14em;
  margin-bottom: 3px;
}
.brief-split p { font-size: 10.8px; line-height: 1.52; color: var(--muted); }
.brief-red { border-left: 2px solid var(--red); }
.brief-red span { color: var(--red); }
.brief-blue { border-left: 2px solid var(--cyan); }
.brief-blue span { color: var(--cyan); }

.chain-line { fill: none; stroke: var(--line-2); stroke-width: 1; stroke-dasharray: 3 7; }
.chain-node rect { fill: var(--panel-2); stroke: var(--line-2); stroke-width: 1; }
.chain-node .chain-dot { fill: var(--lime); }
.chain-lbl { font: 600 11px var(--font-display); fill: var(--text-2); letter-spacing: 0.02em; }
.chain-sub { font: 400 8px var(--font-mono); fill: var(--dim); letter-spacing: 0.02em; }
.chain-head { font: 500 8.5px var(--font-mono); fill: var(--dim); letter-spacing: 2px; }
.chain-rule { stroke: var(--line); stroke-width: 1; }
.chain-note { font: 400 8.5px var(--font-mono); fill: var(--dim); letter-spacing: 0.05em; }
.chain-runner { filter: drop-shadow(0 0 6px rgba(200, 255, 74, 0.8)); }

.stage-frame.is-blue { border-color: color-mix(in srgb, var(--cyan) 42%, var(--line)); }
.stage-frame.is-blue .stage-top { color: var(--cyan); }
.stage-frame.is-blue .stage-top .lamp { background: var(--cyan); box-shadow: 0 0 9px var(--cyan); }
.stage-frame.is-blue::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  background: radial-gradient(70% 55% at 50% 0%, rgba(76, 215, 255, 0.09), transparent 70%);
}

/* ---------- responsive additions ---------- */
@media (min-width: 821px) {
  body.is-sim { overflow: hidden; }
}
@media (max-width: 820px) {
  body.is-sim { overflow: auto; }
  .brief-split { display: none; }
  .brief-text { display: none; }
  .brief { padding: 10px 12px; }
  .brief-title { margin-top: 4px; font-size: 15px; }
  .sim { overflow-x: hidden; }
  .rail { min-width: 0; overflow: hidden; }
  .rail-scroll { flex-direction: column; overflow: visible; -webkit-mask-image: none; mask-image: none; }
  .rail-head { width: auto; border-right: 0; border-bottom: 1px solid var(--line); padding: 12px 14px; }
  .steps { overflow-x: auto; scrollbar-width: none; padding: 8px 10px 10px; }
  .steps::-webkit-scrollbar { display: none; }
  .step-item { width: 150px; }
  .dock { min-width: 0; }
  .stage-frame { overflow: hidden; }
  .stage-canvas { position: absolute; inset: 0; width: auto; height: auto; }
  .console { width: auto; }
}


@media (max-width: 1240px) {
  .sim { grid-template-columns: 250px minmax(0, 1fr) 350px; }
  .cards { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 1060px) {
  .nav { display: none; }
  .sim { grid-template-columns: 240px minmax(0, 1fr); grid-template-rows: minmax(0, 1fr) 300px auto; }
  .dock { grid-column: 2; grid-row: 2; border-left: 0; border-top: 1px solid var(--line); }
  .center { grid-row: 1; grid-column: 2; }
  .rail { grid-row: 1 / 3; }
  .transport { grid-row: 3; }
  .hero { grid-template-columns: 1fr; }
  .hero-visual { max-width: 640px; }
  .chain-section { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .aside-card { position: static; }
}
@media (max-width: 820px) {
  :root { --topbar-h: 58px; }
  .topbar { gap: 12px; padding: 0 14px; }
  .brand-words i, .vtag { display: none; }
  .searchbtn { width: 38px; padding: 0; justify-content: center; }
  .searchbtn span, .searchbtn kbd { display: none; }
  .sim {
    grid-template-columns: 1fr;
    grid-template-rows: auto minmax(360px, 52vh) minmax(280px, 40vh) auto;
    height: auto;
    min-height: calc(100vh - var(--topbar-h));
  }
  .rail { grid-row: 1; grid-column: 1; border-right: 0; border-bottom: 1px solid var(--line); }
  .rail-scroll { display: flex; flex-direction: column; overflow: visible; }
  .rail-head { flex: none; width: auto; border-right: 0; border-bottom: 1px solid var(--line); padding: 12px 14px; }
  .rail-actions, .rail-facts { display: none; }
  .steps { display: flex; gap: 6px; padding: 8px 10px 12px; border-bottom: 0; overflow-x: auto; scrollbar-width: none; }
  .steps::-webkit-scrollbar { display: none; }
  .steps-head { display: none; }
  .step-item { width: 150px; flex: none; grid-template-columns: 1fr; }
  .step-item .sn { width: 20px; height: 20px; }
  .step-item:not(:last-child) .sn::after { display: none; }
  .center { grid-row: 2; grid-column: 1; }
  .dock { grid-row: 3; grid-column: 1; border-left: 0; border-top: 1px solid var(--line); }
  .transport { grid-row: 4; grid-column: 1; position: sticky; bottom: 0; z-index: 20; }
  .tp-info { display: none; }
  .lineage { min-height: 44px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(-n + 2) { border-bottom: 1px solid var(--line); }
  .cards { grid-template-columns: 1fr; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 12px; }
  .cta-band { flex-direction: column; align-items: flex-start; }
  .console { left: 8px; right: 8px; bottom: 8px; }
  .term-body { max-height: 92px; }
  .hv-foot { grid-template-columns: 1fr; }
  .hv-foot div { border-right: 0; border-bottom: 1px solid var(--line); }
}
@media (max-width: 520px) {
  .hero h1 { font-size: 36px; }
  .transport { gap: 8px; padding: 8px; }
  .transport-right { gap: 5px; }
  .tp-progress { display: none; }
  .lens button { padding: 5px 7px; }
  .stage-top .right span:not(:last-child) { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}
/* ATT&CK RANGE — concepts, groups, quiz */
.cards-4 { grid-template-columns: repeat(4, 1fr); }
.card-icon { height: 46px; display: flex; align-items: flex-start; margin-bottom: 2px; }
.card-icon svg { filter: drop-shadow(0 6px 8px rgba(0,0,0,.35)); }
.quiz-badge {
  font: 500 8px var(--font-mono);
  letter-spacing: .08em;
  color: var(--lime);
  border: 1px solid color-mix(in srgb, var(--lime) 30%, transparent);
  border-radius: 3px;
  padding: 2px 5px;
}
.tech-card.concept-card, .tech-card.group-card { min-height: 270px; }

/* quiz */
.quiz-wrap { padding: 14px; }
.quiz { display: flex; flex-direction: column; gap: 12px; }
.quiz-top { display: flex; align-items: center; justify-content: space-between; }
.quiz-count { font: 500 9px var(--font-mono); color: var(--dim); letter-spacing: .06em; }
.quiz-q { font: 600 15px/1.42 var(--font-display); color: var(--text); }
.quiz-options { display: flex; flex-direction: column; gap: 7px; }
.quiz-opt {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  text-align: left;
  padding: 9px 11px;
  border: 1px solid var(--line-2);
  border-radius: 8px;
  background: var(--panel-2);
  color: var(--text-2);
  font: 400 12.5px/1.45 var(--font-display);
  transition: border-color .15s, background .15s;
}
.quiz-opt:hover:not(:disabled) { border-color: var(--line-3); background: var(--panel-3); }
.quiz-opt .qo-k {
  flex: none;
  width: 20px; height: 20px;
  display: grid; place-items: center;
  border: 1px solid var(--line-2);
  border-radius: 4px;
  font: 500 9px var(--font-mono);
  color: var(--dim);
}
.quiz-opt.is-correct { border-color: var(--green); background: var(--green-soft); color: var(--text); }
.quiz-opt.is-correct .qo-k { border-color: var(--green); color: var(--green); }
.quiz-opt.is-wrong { border-color: var(--red); background: var(--red-soft); color: var(--text); }
.quiz-opt.is-wrong .qo-k { border-color: var(--red); color: var(--red); }
.quiz-opt:disabled { cursor: default; }
.quiz-why {
  border-left: 2px solid var(--cyan);
  background: var(--panel);
  padding: 9px 11px;
  font: 400 11.5px/1.55 var(--font-display);
  color: var(--muted);
}
.qw-ok { color: var(--green); font-weight: 600; }
.qw-no { color: var(--red); font-weight: 600; }
.quiz-actions { display: flex; align-items: center; justify-content: flex-end; gap: 12px; }
.quiz-next { height: 34px; }
.quiz-next:disabled { opacity: .45; pointer-events: none; }
.quiz-result { align-items: center; text-align: center; padding: 8px 0 4px; }
.score-ring {
  width: 118px; height: 118px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: conic-gradient(var(--lime) calc(var(--pct) * 1%), var(--line-2) 0);
  position: relative;
  margin: 6px auto;
}
.score-ring::before { content: ''; position: absolute; inset: 8px; border-radius: 50%; background: var(--panel); }
.score-ring b { position: relative; font: 700 26px var(--font-display); color: var(--text); }
.quiz-verdict { font: 400 13px/1.55 var(--font-display); color: var(--muted); max-width: 42ch; }
.quiz-best { font: 500 10px var(--font-mono); color: var(--dim); }
.quiz-alert {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  background: var(--panel);
}
.qa-top { display: flex; align-items: center; gap: 8px; font: 500 9px var(--font-mono); color: var(--dim); margin-bottom: 8px; }
.qa-top b { color: var(--text-2); }
.quiz-alert p { font: 400 12px/1.55 var(--font-display); color: var(--text-2); }
.qa-signals { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 9px; }

/* group pages */
.group-page .rail-back { margin: 28px 0 20px; display: inline-flex; }
.group-hero { display: flex; gap: 30px; align-items: center; padding-bottom: 30px; border-bottom: 1px solid var(--line); }
.group-avatar {
  flex: none;
  width: 150px; height: 150px;
  display: grid; place-items: center;
  border: 1px solid var(--line-2);
  border-radius: 20px;
  background: radial-gradient(circle at 50% 30%, color-mix(in srgb, var(--tc) 16%, transparent), var(--panel) 70%);
  box-shadow: var(--shadow-soft);
}
.group-avatar svg { filter: drop-shadow(0 10px 14px rgba(0,0,0,.4)); }
.group-intro h1 { margin-top: 10px; font: 600 clamp(34px, 4vw, 54px)/1 var(--font-display); letter-spacing: -.03em; }
.aliases { margin-top: 9px; font: 400 10.5px var(--font-mono); color: var(--dim); letter-spacing: .04em; }
.group-summary { margin-top: 14px; max-width: 72ch; color: var(--text-2); font-size: 14.5px; line-height: 1.65; }
.group-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.group-grid { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: clamp(24px, 4vw, 48px); padding-top: 30px; }
.group-main h2, .group-quiz h2 { font: 600 24px/1.2 var(--font-display); letter-spacing: -.02em; margin: 26px 0 6px; }
.group-main h2:first-child { margin-top: 0; }
.campaign { list-style: none; margin: 16px 0 0; padding: 0; }
.campaign li { position: relative; display: grid; grid-template-columns: 62px 1fr; gap: 18px; padding-bottom: 24px; }
.campaign li::before { content: ''; position: absolute; left: 70px; top: 8px; bottom: -4px; width: 1px; background: var(--line-2); }
.campaign li:last-child::before { display: none; }
.campaign .cy { font: 500 11px var(--font-mono); color: var(--lime); padding-top: 2px; }
.cbody b { font: 600 15.5px var(--font-display); color: var(--text); }
.cbody p { margin: 5px 0 8px; color: var(--muted); font-size: 13px; line-height: 1.55; }
.group-techs { display: flex; flex-direction: column; gap: 7px; margin-top: 10px; }
.group-tech {
  display: flex; flex-direction: column; gap: 2px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel-2);
  transition: border-color .15s, background .15s;
}
.group-tech:hover { border-color: var(--line-3); background: var(--panel-3); }
.gt-id { font: 500 8.5px var(--font-mono); color: var(--lime); }
.group-tech b { font: 500 12px var(--font-display); color: var(--text-2); }
.group-tech span:last-child { font: 400 9.5px var(--font-mono); color: var(--dim); }
.group-quiz { margin-top: 38px; padding-top: 26px; border-top: 1px solid var(--line); max-width: 800px; }
.group-quiz .quiz { padding-top: 10px; }

/* triage */
.triage-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.triage-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 34px; align-items: start; margin-top: 26px; }
.triage-aside { border: 1px solid var(--line); border-radius: 12px; background: var(--panel); padding: 18px; position: sticky; top: calc(var(--topbar-h) + 20px); }
.triage-aside h3 { font: 600 14px var(--font-display); }
.triage-aside .bullets { margin-top: 12px; }
.muted-note { margin-top: 14px; font-size: 11.5px; line-height: 1.55; color: var(--dim); }
.triage-page .quiz { max-width: 760px; }

@media (max-width: 1240px) {
  .cards-4 { grid-template-columns: repeat(2, 1fr); }
  .group-grid { grid-template-columns: 1fr; }
  .group-side { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .triage-wrap { grid-template-columns: 1fr; }
  .triage-aside { position: static; }
}
@media (max-width: 820px) {
  .cards-4 { grid-template-columns: 1fr; }
  .group-hero { flex-direction: column; align-items: flex-start; gap: 18px; }
  .group-avatar { width: 104px; height: 104px; }
  .group-side { grid-template-columns: 1fr; }
}
.group-main .bullets, .triage-aside .bullets { display: flex; flex-direction: column; gap: 9px; margin-top: 14px; }
.group-main .bullets li, .triage-aside .bullets li { position: relative; padding-left: 20px; color: var(--text-2); font-size: 13.5px; line-height: 1.55; }
.group-main .bullets li::before, .triage-aside .bullets li::before {
  content: '';
  position: absolute;
  left: 2px; top: 8px;
  width: 6px; height: 6px;
  background: var(--lime);
  transform: rotate(45deg);
}
.quiz-next:disabled {
  background: var(--panel-2);
  border-color: var(--line-2);
  color: var(--dim);
  opacity: 1;
  box-shadow: none;
}
.quiz-result .quiz-top { width: 100%; }
.tech-card.group-card { min-height: 232px; }
/* ---------- labs ---------- */
.lab-intro { font: 400 11.5px/1.55 var(--font-display); color: var(--dim); margin: 0 0 4px; }
.lab-evidence {
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--bg-deep);
  overflow: hidden;
}
.le-head { display: flex; flex-direction: column; gap: 2px; padding: 9px 11px; border-bottom: 1px solid var(--line); }
.le-head b { font: 500 10px var(--font-mono); color: var(--text-2); }
.le-head span { font: 400 9px var(--font-mono); color: var(--dim); }
.lab-evidence dl { margin: 0; padding: 6px 11px 9px; }
.lab-evidence dl div { display: flex; justify-content: space-between; gap: 12px; padding: 3px 0; border-bottom: 1px dotted color-mix(in srgb, var(--line) 60%, transparent); }
.lab-evidence dl div:last-child { border-bottom: 0; }
.lab-evidence dt { font: 400 9px var(--font-mono); color: var(--dim); flex: none; }
.lab-evidence dd { margin: 0; font: 400 9.5px/1.4 var(--font-mono); color: var(--text-2); text-align: right; overflow-wrap: anywhere; }
.lab-sub { display: block; font: 400 9.5px var(--font-mono); color: var(--dim); font-style: normal; margin-top: 2px; }
.lab-seq { display: flex; flex-direction: column; gap: 5px; }
.lab-placed {
  display: flex; align-items: center; gap: 8px; text-align: left;
  padding: 7px 9px; border: 1px solid color-mix(in srgb, var(--lime) 35%, var(--line));
  border-radius: 7px; background: var(--lime-soft); color: var(--text-2);
  font: 400 11.5px var(--font-display);
}
.lab-placed i { width: 17px; height: 17px; display: grid; place-items: center; border-radius: 4px; background: var(--lime); color: var(--lime-ink); font: 600 9px var(--font-mono); font-style: normal; flex: none; }
.lab-items { display: flex; flex-direction: column; gap: 5px; }
.lab-item {
  text-align: left; padding: 8px 10px; border: 1px solid var(--line-2);
  border-radius: 7px; background: var(--panel-2); color: var(--text-2);
  font: 400 11.5px var(--font-display); transition: border-color .15s, opacity .15s;
}
.lab-item:hover:not(.is-used) { border-color: var(--line-3); }
.lab-item.is-used { opacity: .35; pointer-events: none; }
.lab-item.is-locked { pointer-events: none; }
.lab-hint { font: 400 9px var(--font-mono); color: var(--dim); }
.lab-submit, .lab-next { height: 34px; }

/* ---------- campaign ---------- */
.campaign-block { margin-top: 30px; padding-top: 26px; border-top: 1px solid var(--line); }
.campaign-head { margin-bottom: 18px; }
.campaign-head h2 { margin-top: 9px; font: 600 26px/1.15 var(--font-display); letter-spacing: -.02em; }
.campaign-head p { margin-top: 8px; color: var(--muted); font-size: 13.5px; max-width: 70ch; }
.campaign-grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 16px; }
.campaign-grid .stage-frame { height: 470px; }
.campaign-side { display: flex; flex-direction: column; gap: 10px; }
.campaign-steps { display: flex; flex-direction: column; gap: 5px; }
.camp-step {
  display: flex; gap: 9px; align-items: flex-start; text-align: left;
  padding: 8px 9px; border: 1px solid var(--line); border-radius: 7px;
  background: var(--panel-2); color: var(--muted);
}
.camp-step:hover { border-color: var(--line-3); color: var(--text-2); }
.camp-step.is-active { border-color: var(--lime); background: var(--lime-soft); color: var(--text); }
.cs-n { font: 500 9px var(--font-mono); color: var(--dim); padding-top: 2px; }
.camp-step b { display: block; font: 500 11.5px/1.3 var(--font-display); color: inherit; }
.camp-step i { display: block; font: 400 8.5px var(--font-mono); color: var(--dim); font-style: normal; margin-top: 2px; }
.campaign-controls { display: flex; }
.campaign-detail { border: 1px solid var(--line); border-radius: 8px; background: var(--panel); padding: 10px; min-height: 84px; }
.campaign-detail b { font: 600 12px var(--font-display); color: var(--text); }
.campaign-detail p { margin-top: 4px; font-size: 11px; line-height: 1.5; color: var(--muted); }
.campaign-log { margin-top: 6px; font: 400 9px/1.45 var(--font-mono); color: var(--dim); }

/* tools + chain */
.chain-list { list-style: none; margin: 12px 0 0; padding: 0; display: flex; flex-direction: column; }
.chain-list li { display: grid; grid-template-columns: 80px 1fr auto; gap: 12px; align-items: center; padding: 7px 0; border-bottom: 1px solid var(--line); font-size: 12px; }
.cl-id { font: 500 9px var(--font-mono); color: var(--lime); }
.cl-name { color: var(--text-2); }
.cl-go { font: 500 8.5px var(--font-mono); color: var(--cyan); letter-spacing: .04em; }
.cl-go.is-dim { color: var(--dim); }
.tool-list { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.tool-tag em { font: 400 8px var(--font-mono); color: var(--dim); font-style: normal; margin-left: 5px; text-transform: uppercase; }
.mit-ul { margin: 10px 0 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 6px; }
.mit-ul li { font: 400 10.5px/1.45 var(--font-mono); color: var(--text-2); }
.mit-ul b { color: var(--lime); font-weight: 500; margin-right: 5px; }

@media (max-width: 1060px) {
  .campaign-grid { grid-template-columns: 1fr; }
  .campaign-grid .stage-frame { height: 380px; }
}
@media (max-width: 600px) {
  .campaign-grid .stage-frame { height: 300px; }
  .chain-list li { grid-template-columns: 70px 1fr; }
  .cl-go { grid-column: 2; }
}
.lab-submit:disabled {
  background: var(--panel-2);
  border-color: var(--line-2);
  color: var(--dim);
  opacity: 1;
}
.lab-submit[hidden], .lab-next[hidden] { display: none !important; }
.group-side { display: flex; flex-direction: column; gap: 14px; }
.group-side .aside-card { position: static; }
.cards-2 { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; }
.object-list { display: flex; flex-direction: column; border-top: 1px solid var(--line); }
.obj-row { display: grid; grid-template-columns: 260px minmax(0,1fr) auto; gap: 14px; align-items: baseline; padding: 9px 2px; border-bottom: 1px solid var(--line); text-decoration: none; }
.obj-row b { font: 500 12px var(--font-display); color: var(--text); }
.obj-row span { font: 400 10.5px var(--font-mono); color: var(--muted); }
.obj-row i { font: 400 9px var(--font-mono); color: var(--dim); font-style: normal; }
.obj-row:hover b { color: var(--lime); }
@media (max-width: 760px) {
  .cards-2 { grid-template-columns: 1fr; }
  .obj-row { grid-template-columns: 1fr; gap: 2px; }
}
/* ---------- protocol range ---------- */
.proto-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 10px; margin-top: 18px; }
.proto-card { display: flex; flex-direction: column; gap: 5px; padding: 13px 14px; border: 1px solid var(--line); border-radius: 9px; background: var(--panel); text-decoration: none; min-height: 152px; border-top: 2px solid var(--pc); }
.proto-card:hover { border-color: var(--line-3); background: var(--panel-2); }
.pc-cat { font: 500 8px var(--font-mono); letter-spacing: .12em; color: var(--pc); text-transform: uppercase; }
.proto-card b { font: 600 14px var(--font-display); color: var(--text); }
.pc-meta { font: 400 9px var(--font-mono); color: var(--dim); }
.pc-sum { font-size: 10.5px; line-height: 1.45; color: var(--muted); }
.proto-card i { margin-top: auto; font: 400 8.5px var(--font-mono); color: var(--dim); font-style: normal; }
.proto-filters { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }

.proto-page { display: grid; grid-template-columns: 300px minmax(0,1fr); gap: 16px; padding: 24px 2px 40px; }
.proto-side { display: flex; flex-direction: column; gap: 10px; }
.proto-side h1 { font: 600 28px/1.05 var(--font-display); letter-spacing: -.02em; margin-top: 6px; }
.proto-summary { font-size: 12px; line-height: 1.55; color: var(--muted); }
.proto-meta { display: flex; flex-wrap: wrap; gap: 5px; }
.proto-steps { display: flex; flex-direction: column; gap: 4px; margin-top: 4px; }
.proto-step { display: flex; gap: 9px; align-items: center; text-align: left; padding: 7px 8px; border: 1px solid var(--line); border-radius: 7px; background: var(--panel-2); color: var(--muted); }
.proto-step:hover { border-color: var(--line-3); color: var(--text-2); }
.proto-step.is-active { border-color: var(--lime); background: var(--lime-soft); color: var(--text); }
.proto-step i { font: 500 8.5px var(--font-mono); color: var(--dim); font-style: normal; }
.proto-step span { font: 400 10.5px var(--font-mono); }
.proto-controls { display: flex; gap: 5px; flex-wrap: wrap; margin-top: 4px; }
.proto-main { min-width: 0; }
.proto-stage { height: 500px; }
.proto-panel { display: grid; grid-template-columns: 1.2fr 1fr 1.2fr; gap: 10px; margin-top: 10px; }
.proto-detail, .proto-block { border: 1px solid var(--line); border-radius: 8px; background: var(--panel); padding: 10px 12px; min-height: 132px; }
.proto-detail b { display: block; margin-top: 6px; font: 600 13px var(--font-display); color: var(--text); }
.proto-detail p { margin-top: 4px; font-size: 10.5px; line-height: 1.5; color: var(--muted); }
.layer-stack { display: flex; flex-direction: column; gap: 3px; margin-top: 7px; }
.layer-chip { font: 400 9px var(--font-mono); color: var(--text-2); border: 1px solid var(--line); border-radius: 4px; padding: 3px 6px; background: var(--bg-deep); }
.packet-fields { margin-top: 7px; }
.packet-fields div { display: flex; justify-content: space-between; gap: 10px; padding: 2px 0; border-bottom: 1px dotted var(--line); }
.packet-fields dt { font: 400 8.5px var(--font-mono); color: var(--dim); }
.packet-fields dd { margin: 0; font: 400 9px var(--font-mono); color: var(--text-2); text-align: right; overflow-wrap: anywhere; }
@media (max-width: 1100px) {
  .proto-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .proto-page { grid-template-columns: 1fr; }
  .proto-panel { grid-template-columns: 1fr; }
  .proto-stage { height: 400px; }
}
@media (max-width: 600px) { .proto-grid { grid-template-columns: 1fr; } }
.proto-stage .console { display: none !important; }
.layer-chip.is-on { border-color: var(--lime); color: var(--lime); background: var(--lime-soft); }
/* object list filters */
.obj-tools { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 16px 0 14px; }
.obj-q { flex: 0 1 280px; height: 32px; padding: 0 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel); color: var(--text); font: 400 11px var(--font-mono); outline: none; }
.obj-q:focus { border-color: var(--lime); }
.obj-tools .proto-filters { margin: 0; }
.obj-count { margin-left: auto; font: 400 9px var(--font-mono); color: var(--dim); }
@media (max-width: 700px) { .obj-count { margin-left: 0; width: 100%; } }
/* ---------- learning paths ---------- */
.path-hero { border:1px solid var(--line); background:var(--panel); border-radius:10px; padding:26px 28px; margin:12px 0 18px; }
.path-hero h1 { font:600 clamp(30px,4vw,46px)/1.02 var(--font-display); letter-spacing:-.03em; margin:8px 0 8px; }
.path-hero p { max-width:70ch; color:var(--muted); font-size:13px; }
.path-progress { display:flex; align-items:center; gap:12px; margin-top:18px; flex-wrap:wrap; }
.path-bar { height:4px; width:240px; max-width:60vw; background:var(--line); border-radius:2px; overflow:hidden; }
.path-bar i { display:block; height:100%; background:linear-gradient(90deg,var(--lime),var(--cyan)); transition:width .2s; }
.path-progress span { font:400 9px var(--font-mono); color:var(--dim); }
.path-steps { display:flex; flex-direction:column; gap:6px; }
.path-step { display:flex; align-items:center; gap:12px; border:1px solid var(--line); background:var(--panel); border-radius:8px; padding:11px 14px; }
.path-step:hover { border-color:var(--line-3); }
.path-step input { accent-color:var(--lime); width:14px; height:14px; flex:none; }
.path-num { font:500 9px var(--font-mono); color:var(--dim); flex:none; }
.path-body { flex:1; min-width:0; }
.path-body b { display:block; font:600 13px var(--font-display); color:var(--text); }
.path-body p { margin:2px 0 0; font-size:10.5px; color:var(--muted); }
.path-open { font:500 9px var(--font-mono); color:var(--lime); white-space:nowrap; }
.path-step.is-done { border-color:rgba(200,255,74,.3); background:rgba(200,255,74,.03); }
.path-step.is-done .path-body b { color:var(--lime); }
@media (max-width:600px) { .path-step { align-items:flex-start; flex-wrap:wrap; } .path-body { flex:1 1 60%; } .path-open { margin-left:28px; } .path-hero { padding:20px; } }
/* related object links */
.rail-related { margin-top: 14px; border-top: 1px solid var(--line); padding-top: 12px; }
.rail-related h3 { font: 600 9px var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--dim); margin: 0 0 7px; }
.rel-list { display: flex; flex-wrap: wrap; gap: 4px; }
.rel-list .tag:hover { border-color: var(--lime); color: var(--lime); }
.mcol-head a { color: inherit; text-decoration: none; }
.mcol-head a:hover { color: var(--lime); }
/* case studies */
.case-grid { display:grid; grid-template-columns:1fr 1fr; gap:12px; margin-top:12px; }
.case-panel { border:1px solid var(--line); background:var(--panel); border-radius:9px; padding:16px 18px; min-width:0; }
.case-panel h2 { font:600 18px var(--font-display); margin:0 0 10px; }
.case-panel h3 { font:600 12px var(--font-display); margin:16px 0 6px; color:var(--text); }
.case-timeline { list-style:none; margin:0; padding:0; }
.case-timeline li { display:flex; gap:10px; padding:7px 0; border-bottom:1px solid var(--line); }
.case-timeline li:last-child { border-bottom:0; }
.case-timeline .cy { font:500 8px var(--font-mono); color:var(--lime); min-width:58px; padding-top:2px; }
.case-timeline .cbody b { display:block; font:600 11.5px var(--font-display); color:var(--text); }
.case-timeline .cbody p { margin:2px 0 0; font-size:10px; line-height:1.45; color:var(--muted); }
.case-chains { display:flex; flex-direction:column; gap:5px; }
.case-chain { display:flex; align-items:center; gap:9px; border:1px solid var(--line); border-radius:6px; padding:8px 10px; background:var(--bg-deep); }
.case-chain:hover { border-color:var(--line-3); }
.case-chain .cl-id { font:500 8px var(--font-mono); color:var(--cyan); min-width:64px; }
.case-chain span:nth-child(2) { flex:1; min-width:0; }
.case-chain b { display:block; font:500 9px var(--font-mono); color:var(--dim); text-transform:uppercase; }
.case-chain em { display:block; font:400 11px var(--font-display); color:var(--text-2); font-style:normal; }
.case-chain i { font:400 8px var(--font-mono); color:var(--lime); font-style:normal; }
@media (max-width:900px) { .case-grid { grid-template-columns:1fr; } }
.empty-state { max-width:640px; border:1px solid var(--line); background:var(--panel); border-radius:12px; padding:34px; margin:40px auto; text-align:left; }
.empty-state h1 { font:600 34px/1.1 var(--font-display); margin:8px 0 10px; }
.empty-state p { color:var(--muted); line-height:1.6; }
.empty-state code { font:500 11px var(--font-mono); color:var(--cyan); }
.empty-actions { display:flex; flex-wrap:wrap; gap:8px; margin:18px 0 12px; }
.empty-hint { font-size:11px; color:var(--dim); }