:root {
  color-scheme: dark;
  --ink: #f2f0e9;
  --muted: #819096;
  --muted-2: #59686d;
  --canvas: #0b1012;
  --sidebar: #0c1214;
  --panel: #101719;
  --panel-2: #182124;
  --line: #2a3639;
  --green: #b7ee38;
  --green-bright: #d5ff70;
  --green-dark: #293613;
  --amber: #f5b83b;
  --amber-dark: #4a3317;
  --red: #e4543f;
  --blue: #78b8ff;
  --radius: 14px;
  --shadow: 0 24px 70px rgb(0 0 0 / 28%);
}

[hidden] {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 78% 4%, rgb(183 238 56 / 7%), transparent 30rem),
    var(--canvas);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

button, input, textarea, select { font: inherit; }
button { color: inherit; }

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  padding: .75rem 1rem;
  background: var(--green);
  color: #041009;
  border-radius: 8px;
}
.skip-link:focus { top: 1rem; }

.app-shell { min-height: 100vh; display: grid; grid-template-columns: 260px 1fr; }

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  padding: 1.6rem 1.2rem;
  border-right: 1px solid var(--line);
  background: rgb(12 18 20 / 94%);
  backdrop-filter: blur(18px);
}

.brand { display: flex; align-items: center; gap: .8rem; letter-spacing: .12em; }
.brand strong { display: block; font-size: .9rem; color: var(--ink); }
.brand small { display: block; margin-top: .08rem; color: var(--muted); font-size: .68rem; letter-spacing: .03em; }
.brand-mark { width: 34px; height: 34px; display: block; flex: 0 0 auto; }
.brand-logo { display: block; width: 218px; max-width: 100%; height: auto; }

.nav-label, .eyebrow {
  margin: 0 0 .7rem;
  color: var(--muted-2);
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: .7rem;
  width: 100%;
  min-height: 42px;
  margin: .2rem 0;
  padding: .65rem .7rem;
  border: 1px solid transparent;
  border-radius: 9px;
  color: var(--muted);
  text-decoration: none;
  font-size: .86rem;
}
.nav-item.active { background: var(--panel-2); border-color: var(--line); color: var(--ink); }
.nav-item.active .nav-dot { background: var(--green); box-shadow: 0 0 0 4px rgb(183 238 56 / 12%); }
.nav-item.muted { opacity: .6; cursor: not-allowed; }
.nav-item small { margin-left: auto; color: var(--muted-2); font-size: .62rem; text-transform: uppercase; }
.nav-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--muted-2); }

.sidebar-footer { display: grid; gap: .75rem; margin-top: auto; }
.boundary-card {
  padding: 1rem;
  border: 1px solid #52651c;
  border-radius: 12px;
  background: linear-gradient(145deg, rgb(64 82 20 / 32%), rgb(16 23 25 / 70%));
}
.boundary-status { display: flex; align-items: center; gap: .5rem; color: var(--green-bright); font-size: .68rem; text-transform: uppercase; letter-spacing: .08em; }
.pulse-dot, .mini-dot, .state-dot { display: inline-block; border-radius: 50%; }
.pulse-dot { width: 7px; height: 7px; background: var(--green); box-shadow: 0 0 0 5px rgb(183 238 56 / 10%); }
.boundary-card strong { display: block; margin-top: .45rem; font-size: 1rem; }
.boundary-card p { margin: .35rem 0 .7rem; color: var(--muted); font-size: .76rem; line-height: 1.5; }
.text-button { padding: 0; border: 0; background: transparent; color: var(--green-bright); font-size: .74rem; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.account-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: .7rem;
  padding: .75rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgb(24 33 36 / 72%);
}
.account-card small, .account-card strong { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.account-card small { color: var(--muted-2); font-size: .58rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.account-card strong { margin-top: .1rem; font-size: .74rem; }
.logout-form { margin: 0; }
.user-avatar, .user-chip > i {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid #52651c;
  border-radius: 9px;
  background: linear-gradient(145deg, #344519, #1b2410);
  color: var(--green-bright);
  font-size: .66rem;
  font-style: normal;
  font-weight: 850;
  letter-spacing: .04em;
}
.user-chip {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  min-height: 42px;
  padding: .35rem .65rem .35rem .4rem;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: rgb(16 23 25 / 86%);
}
.user-chip > i { width: 30px; height: 30px; border-radius: 8px; }
.user-chip small, .user-chip strong { display: block; max-width: 130px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.user-chip small { color: var(--muted-2); font-size: .52rem; font-weight: 800; letter-spacing: .09em; line-height: 1; text-transform: uppercase; }
.user-chip strong { margin-top: .2rem; font-size: .7rem; line-height: 1; }

.login-page { min-height: 100vh; }
.login-shell { min-height: 100vh; display: grid; place-items: center; padding: 1.5rem; }
.login-card {
  width: min(440px, 100%);
  padding: clamp(1.6rem, 5vw, 2.5rem);
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(145deg, rgb(24 33 36 / 96%), rgb(12 18 20 / 98%));
  box-shadow: var(--shadow);
}
.login-brand { margin-bottom: 2.5rem; }
.login-card h1 { margin-bottom: .5rem; }
.login-intro { margin-bottom: 1.4rem; color: var(--muted); }
.login-message { min-height: 1.5rem; margin-bottom: .7rem; color: var(--amber); font-size: .85rem; }
.login-form { display: grid; gap: 1rem; }
.login-form label { display: grid; gap: .45rem; color: var(--muted); font-size: .78rem; font-weight: 700; }
.login-form input {
  width: 100%;
  padding: .8rem .9rem;
  border: 1px solid var(--line);
  border-radius: 9px;
  outline: none;
  background: #0a0f0d;
  color: var(--ink);
}
.login-form input:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgb(183 238 56 / 12%); }
.login-boundary { display: flex; align-items: flex-start; gap: .7rem; margin-top: 1.5rem; padding-top: 1.25rem; border-top: 1px solid var(--line); }
.login-boundary .pulse-dot { margin-top: .35rem; flex: 0 0 auto; }
.login-boundary strong, .login-boundary small { display: block; }
.login-boundary strong { color: var(--green-bright); font-size: .76rem; }
.login-boundary small { margin-top: .2rem; color: var(--muted); font-size: .7rem; }

main { width: min(1520px, 100%); margin: 0 auto; padding: 1.7rem 2.2rem 4rem; }
.app-view[hidden] { display: none; }
.topbar { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-bottom: 1.4rem; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 0; font-size: clamp(1.6rem, 2.6vw, 2.2rem); letter-spacing: -.035em; }
h2 { letter-spacing: -.025em; }
h3 { letter-spacing: -.015em; }
.topbar-actions { display: flex; align-items: center; gap: .65rem; }
.model-pill {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  min-height: 38px;
  padding: .45rem .7rem;
  border: 1px solid #52651c;
  border-radius: 999px;
  background: rgb(41 54 19 / 78%);
  color: var(--green-bright);
  font-size: .66rem;
  font-weight: 800;
  letter-spacing: .05em;
  text-transform: uppercase;
}
.model-pill i { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 5px rgb(183 238 56 / 10%); }
.model-pill.loading { border-color: var(--line); background: var(--panel); color: var(--muted); }
.model-pill.loading i { background: var(--amber); box-shadow: 0 0 0 5px rgb(245 184 59 / 9%); }
.model-pill.offline { border-color: #673a37; background: #2c1716; color: #ffaaa4; }
.model-pill.offline i { background: var(--red); box-shadow: none; }
.mode-badge, .count-badge, .rank-badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: .32rem .58rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: var(--panel);
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.rank-badge { color: var(--green-bright); border-color: #52651c; background: var(--green-dark); }

.overview-callout {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 1.2rem;
  margin-bottom: 1rem;
  padding: 1.3rem 1.4rem;
  border: 1px solid #52651c;
  border-radius: var(--radius);
  background: linear-gradient(118deg, rgb(183 238 56 / 11%), rgb(16 23 25 / 92%) 52%);
}
.overview-callout > img { width: 52px; height: 52px; }
.overview-callout .eyebrow { margin-bottom: .25rem; color: var(--green); }
.overview-callout h2 { margin-bottom: .25rem; font-size: clamp(1.25rem, 2.5vw, 1.8rem); }
.overview-callout p:last-child { margin: 0; color: var(--muted); font-size: .82rem; }
.read-only-pill { display: inline-flex; align-items: center; gap: .45rem; padding: .48rem .7rem; border: 1px solid #52651c; border-radius: 999px; color: var(--green-bright); font-size: .66rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; white-space: nowrap; }
.read-only-pill i { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgb(183 238 56 / 10%); }

.overview-kpis { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .75rem; margin-bottom: 1rem; }
.overview-kpis article { padding: 1rem 1.05rem; border: 1px solid var(--line); border-radius: 11px; background: var(--panel); }
.overview-kpis span, .overview-kpis small { display: block; }
.overview-kpis span { color: var(--muted); font-size: .67rem; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; }
.overview-kpis strong { display: block; margin: .25rem 0 .12rem; color: var(--ink); font-size: 1.65rem; line-height: 1; }
.overview-kpis small { color: var(--muted-2); font-size: .68rem; }

.line-overview { overflow: hidden; }
.line-overview-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1.2rem 1.3rem; border-bottom: 1px solid var(--line); }
.line-title { display: flex; align-items: center; gap: .8rem; }
.line-title p { margin: 0 0 .18rem; color: var(--muted-2); font-size: .64rem; font-weight: 800; letter-spacing: .1em; }
.line-title h2 { margin: 0; font-size: 1.15rem; }
.source-badges { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .4rem; }
.source-badges span { padding: .35rem .5rem; border: 1px solid var(--line); border-radius: 5px; background: var(--panel-2); color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .59rem; }
.source-badges span:last-child { border-color: #52651c; color: var(--green-bright); }
.equipment-flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; align-items: center; gap: .7rem; padding: 1.4rem 1.3rem; }
.equipment-flow > div { min-height: 108px; padding: .9rem; border: 1px solid var(--line); border-radius: 9px; background: #0d1416; }
.equipment-flow > div > span { display: grid; place-items: center; width: 26px; height: 26px; margin-bottom: .7rem; border-radius: 5px; background: var(--green-dark); color: var(--green); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .63rem; font-weight: 800; }
.equipment-flow strong, .equipment-flow small { display: block; }
.equipment-flow strong { margin-bottom: .25rem; font-size: .8rem; }
.equipment-flow small { color: var(--muted); font-size: .66rem; }
.equipment-flow > i { width: 24px; height: 1px; background: linear-gradient(90deg, var(--green), var(--line)); }
.line-health-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgb(0 0 0 / 12%); }
.line-health-grid div { padding: .85rem 1rem; border-right: 1px solid var(--line); }
.line-health-grid div:last-child { border-right: 0; }
.line-health-grid span, .line-health-grid strong { display: block; }
.line-health-grid span { color: var(--muted-2); font-size: .61rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.line-health-grid strong { margin-top: .2rem; font-size: .75rem; }
.line-actions { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1rem 1.3rem; }
.line-actions p { max-width: 740px; margin: 0; color: var(--muted); font-size: .76rem; }

.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 42px;
  padding: .67rem 1rem;
  border: 1px solid transparent;
  border-radius: 9px;
  font-weight: 750;
  font-size: .82rem;
  cursor: pointer;
  transition: transform .16s ease, background .16s ease, border-color .16s ease;
}
.button:hover { transform: translateY(-1px); }
.button:focus-visible, .tab:focus-visible, .text-button:focus-visible, .icon-button:focus-visible, .practice-mode-tab:focus-visible, select:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; }
.button:disabled { opacity: .55; cursor: wait; transform: none; }
.button-primary { background: var(--green); color: #101719; box-shadow: 0 9px 25px rgb(183 238 56 / 14%); }
.button-primary:hover { background: var(--green-bright); }
.button-secondary { border-color: var(--line); background: var(--panel); color: var(--ink); }
.button-secondary:hover { border-color: #3a4944; background: var(--panel-2); }
.button.full { width: 100%; }

.notice { margin-bottom: 1rem; padding: .8rem 1rem; border: 1px solid #52651c; border-radius: 10px; background: #202a12; color: var(--green-bright); font-size: .84rem; }
.notice.error { border-color: #673a37; background: #2c1716; color: #ffaaa4; }

.status-strip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgb(16 23 25 / 88%);
  box-shadow: var(--shadow);
}
.asset-identity { display: flex; align-items: center; gap: .8rem; min-width: 220px; }
.asset-identity p { margin: 0; color: var(--muted); font-size: .72rem; }
.asset-identity strong { font-size: .92rem; }
.state-dot { width: 11px; height: 11px; background: var(--green); box-shadow: 0 0 0 6px rgb(183 238 56 / 9%); }
.state-dot.incident { background: var(--amber); box-shadow: 0 0 0 6px rgb(244 179 93 / 10%); }
.status-strip dl { display: flex; align-items: center; gap: 2.2rem; margin: 0; }
.status-strip dl div { min-width: 90px; }
.status-strip dt { color: var(--muted-2); font-size: .66rem; text-transform: uppercase; letter-spacing: .08em; }
.status-strip dd { margin: .15rem 0 0; font-size: .78rem; font-weight: 750; }
.mini-dot { width: 6px; height: 6px; margin-right: .25rem; }
.mini-dot.green { background: var(--green); }

.empty-state {
  min-height: 610px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 4rem 1.5rem;
  text-align: center;
}
.empty-state h2 { max-width: 820px; margin-bottom: 1rem; font-size: clamp(2.2rem, 5vw, 4.8rem); line-height: 1.03; }
.empty-state > p:not(.eyebrow) { max-width: 690px; margin-bottom: 1.7rem; color: var(--muted); font-size: 1rem; }
.sequence-graphic { display: flex; align-items: center; gap: .45rem; margin-bottom: 2.2rem; color: var(--muted); font-size: .61rem; font-weight: 800; letter-spacing: .1em; }
.sequence-graphic span { padding: .5rem .65rem; border: 1px solid var(--line); border-radius: 6px; background: var(--panel); }
.sequence-graphic i { width: 28px; height: 1px; background: linear-gradient(90deg, var(--green), var(--line)); }
.acceptance-row { display: flex; flex-wrap: wrap; justify-content: center; gap: .5rem; margin-top: 1.4rem; }
.acceptance-row span { padding: .36rem .6rem; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: .67rem; }

.incident-heading { display: flex; justify-content: space-between; gap: 2rem; padding: 2.2rem .2rem 1.2rem; }
.incident-heading h2 { margin-bottom: .35rem; font-size: clamp(1.6rem, 3vw, 2.7rem); }
.incident-heading p:not(.eyebrow) { max-width: 760px; color: var(--muted); }
.confidence-stack { min-width: 175px; align-self: center; padding-left: 1rem; border-left: 1px solid var(--line); }
.confidence-stack span { display: block; color: var(--muted-2); font-size: .66rem; text-transform: uppercase; }
.confidence-stack strong { display: block; margin-top: .2rem; color: var(--green-bright); font-size: 1.15rem; }

.workspace-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(350px, .65fr); gap: 1rem; align-items: start; }
.evidence-column { display: grid; gap: 1rem; }
.panel { border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(145deg, rgb(20 29 32 / 96%), rgb(12 18 20 / 97%)); box-shadow: var(--shadow); }
.panel-heading { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; padding: 1.15rem 1.2rem; border-bottom: 1px solid var(--line); }
.panel-heading.compact { padding: 0 0 .55rem; border: 0; }
.panel-heading h3 { margin: 0; font-size: 1rem; }
.panel-heading .eyebrow { margin-bottom: .28rem; }

.timeline-panel { min-height: 710px; overflow: hidden; }
.ingestion-receipt {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem 1.1rem;
  min-height: 40px;
  padding: .65rem 1.2rem;
  border-bottom: 1px solid var(--line);
  background: rgb(183 238 56 / 4%);
  color: var(--muted);
  font-size: .68rem;
}
.ingestion-receipt strong { color: var(--green-bright); }
.timeline { padding: .7rem 1.1rem 1.1rem; }
.timeline-event { position: relative; display: grid; grid-template-columns: 72px 20px 1fr auto; gap: .7rem; min-height: 61px; padding: .8rem 0; border-bottom: 1px solid rgb(36 48 44 / 60%); }
.timeline-event:last-child { border-bottom: 0; }
.timeline-event time { color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .69rem; }
.timeline-node { position: relative; display: flex; justify-content: center; }
.timeline-node::after { content: ""; position: absolute; top: 14px; bottom: -48px; width: 1px; background: var(--line); }
.timeline-event:last-child .timeline-node::after { display: none; }
.timeline-node span { position: relative; z-index: 1; width: 8px; height: 8px; margin-top: 3px; border: 2px solid var(--muted-2); border-radius: 50%; background: var(--panel); }
.timeline-event.divergence { margin: 0 -.5rem; padding-left: .5rem; padding-right: .5rem; border: 1px solid #5d4322; border-radius: 9px; background: rgb(71 46 18 / 25%); }
.timeline-event.divergence .timeline-node span { border-color: var(--amber); background: var(--amber); box-shadow: 0 0 0 5px rgb(244 179 93 / 12%); }
.timeline-event.symptom .timeline-node span { border-color: var(--blue); }
.event-copy strong { display: block; margin-bottom: .12rem; font-size: .83rem; }
.event-copy span { color: var(--muted); font-size: .72rem; }
.event-value { align-self: start; padding: .27rem .45rem; border-radius: 6px; background: var(--panel-2); color: var(--ink); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .66rem; }
.event-tag { color: var(--amber); font-size: .62rem; font-weight: 800; text-transform: uppercase; }
.event-tag.symptom { color: var(--blue); }

.divergence-panel { padding: 1.2rem; border-color: #594221; background: linear-gradient(145deg, rgb(54 38 17 / 78%), rgb(17 22 19 / 96%)); }
.divergence-panel h3 { margin-bottom: .65rem; font-size: 1.16rem; line-height: 1.35; }
.signal-code { display: inline-block; padding: .32rem .5rem; border-radius: 5px; background: rgb(0 0 0 / 28%); color: var(--amber); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .68rem; }
.causal-note, .safety-note { margin: .75rem 0 0; color: var(--muted); font-size: .73rem; }

.evidence-panel { overflow: hidden; }
.tab-row { display: flex; border-bottom: 1px solid var(--line); }
.tab { flex: 1; padding: .85rem .55rem; border: 0; border-bottom: 2px solid transparent; background: transparent; color: var(--muted); font-size: .7rem; font-weight: 750; cursor: pointer; }
.tab.active { border-bottom-color: var(--green); color: var(--ink); background: rgb(183 238 56 / 4%); }
.tab span { display: inline-grid; place-items: center; min-width: 18px; height: 18px; margin-left: .25rem; border-radius: 999px; background: var(--panel-2); font-size: .62rem; }
.evidence-list { min-height: 205px; padding: .6rem 1rem 1rem; }
.evidence-item { display: grid; grid-template-columns: 18px 1fr; gap: .6rem; padding: .72rem 0; border-bottom: 1px solid rgb(36 48 44 / 55%); color: #c9d2cf; font-size: .76rem; }
.evidence-item:last-child { border-bottom: 0; }
.evidence-item::before { content: ""; width: 7px; height: 7px; margin-top: .35rem; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgb(183 238 56 / 8%); }
.evidence-item.unknown::before { background: var(--amber); box-shadow: 0 0 0 4px rgb(244 179 93 / 8%); }
.evidence-empty { padding: 2.5rem 1rem; color: var(--muted); text-align: center; font-size: .78rem; }

.action-panel { padding: 1.2rem; }
.action-panel h3 { margin-bottom: .4rem; font-size: 1.03rem; line-height: 1.42; }
.action-panel .button { margin-top: 1rem; }

.diagnosis-panel { display: grid; grid-template-columns: 1.15fr .85fr; gap: 2rem; margin-top: 1rem; padding: 1.2rem; }
.diagnosis-panel h3 { margin-bottom: .35rem; color: var(--green-bright); }
.diagnosis-panel p { margin-bottom: 0; color: var(--muted); font-size: .8rem; }
.symptom-card { padding: .85rem 1rem; border: 1px solid #29465f; border-radius: 10px; background: rgb(32 67 94 / 20%); }
.symptom-card span { display: block; color: var(--blue); font-size: .62rem; font-weight: 800; letter-spacing: .09em; }
.symptom-card strong { display: block; margin: .2rem 0 .3rem; font-size: .9rem; }
.prior-case-card {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(220px, .75fr) minmax(260px, 1.25fr) auto;
  gap: 1.2rem;
  align-items: center;
  padding: .9rem 1rem;
  border: 1px solid #52651c;
  border-radius: 10px;
  background: rgb(35 88 62 / 18%);
}
.prior-case-card[hidden] { display: none; }
.prior-case-card span { display: block; color: var(--green); font-size: .62rem; font-weight: 800; letter-spacing: .09em; }
.prior-case-card strong { display: block; margin-top: .2rem; font-size: .86rem; }
.prior-case-card p { color: #c9d2cf; }
.prior-case-card small { color: var(--muted-2); font-size: .65rem; text-align: right; }

.case-library { margin-top: 1rem; overflow: hidden; }
.case-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .8rem; padding: 1rem; }
.case-card { padding: 1rem; border: 1px solid var(--line); border-radius: 10px; background: #0d1416; }
.case-card .case-meta { display: flex; justify-content: space-between; gap: .8rem; color: var(--muted-2); font-size: .64rem; text-transform: uppercase; }
.case-card h4 { margin: .65rem 0 .25rem; color: var(--green-bright); font-size: .92rem; }
.case-card p { margin-bottom: .55rem; color: var(--muted); font-size: .76rem; }
.case-card dl { display: grid; grid-template-columns: 92px 1fr; gap: .35rem .6rem; margin: .7rem 0 0; padding-top: .7rem; border-top: 1px solid var(--line); font-size: .71rem; }
.case-card dt { color: var(--muted-2); }
.case-card dd { margin: 0; color: #cbd5d1; }

.verification-panel { margin-top: 1rem; overflow: hidden; }
.verification-panel form { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; padding: 1.2rem; }
.verification-panel label:first-child { grid-column: 1 / -1; }
label { color: var(--muted); font-size: .72rem; font-weight: 700; }
input, textarea { width: 100%; margin-top: .35rem; padding: .7rem .75rem; border: 1px solid var(--line); border-radius: 8px; background: #0b1113; color: var(--ink); resize: vertical; }
input:focus, textarea:focus { outline: 1px solid var(--green); border-color: var(--green); }
.form-actions { grid-column: 1 / -1; display: flex; justify-content: flex-end; gap: .6rem; }
.icon-button { width: 32px; height: 32px; border: 1px solid var(--line); border-radius: 7px; background: var(--panel-2); cursor: pointer; }

.practice-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  min-height: 390px;
  margin-bottom: 1rem;
  overflow: hidden;
  border-color: rgb(183 238 56 / 24%);
  background:
    linear-gradient(115deg, rgb(183 238 56 / 8%), transparent 42%),
    radial-gradient(circle at 83% 50%, rgb(183 238 56 / 12%), transparent 18rem),
    linear-gradient(145deg, #142019, #0c1214 70%);
}
.practice-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgb(183 238 56 / 3%) 1px, transparent 1px), linear-gradient(90deg, rgb(183 238 56 / 3%) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(90deg, transparent, #000 55%);
}
.practice-hero-copy { position: relative; z-index: 1; padding: clamp(2rem, 4vw, 3.4rem); }
.practice-kicker { display: flex; align-items: center; gap: .7rem; color: var(--green-bright); font-size: .67rem; font-weight: 850; letter-spacing: .16em; }
.practice-kicker img { width: 28px; height: 28px; }
.practice-hero h2 { margin: 1.15rem 0 .9rem; font-size: clamp(2.2rem, 4.8vw, 4.7rem); line-height: .98; letter-spacing: -.055em; }
.practice-hero h2 em { color: var(--green); font-style: normal; }
.practice-hero-copy > p { max-width: 820px; margin-bottom: 1.6rem; color: #a9b3af; font-size: .93rem; }
.practice-proof-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); max-width: 860px; border-top: 1px solid var(--line); }
.practice-proof-grid > div { display: grid; grid-template-columns: auto 1fr; gap: 0 .6rem; padding: .9rem .9rem .2rem 0; }
.practice-proof-grid strong { grid-row: 1 / 3; color: var(--green); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .72rem; }
.practice-proof-grid span { font-size: .75rem; font-weight: 750; }
.practice-proof-grid small { color: var(--muted-2); font-size: .62rem; }
.practice-signal { position: relative; min-height: 330px; display: grid; place-items: center; }
.signal-ring { position: absolute; border: 1px solid rgb(183 238 56 / 25%); border-radius: 50%; }
.ring-one { width: 270px; height: 270px; animation: signal-spin 18s linear infinite; }
.ring-one::before, .ring-two::before { content: ""; position: absolute; top: -4px; left: 50%; width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 22px var(--green); }
.ring-two { width: 195px; height: 195px; border-style: dashed; opacity: .65; animation: signal-spin 13s linear infinite reverse; }
.signal-core { position: relative; display: grid; place-items: center; width: 124px; height: 124px; border: 1px solid #52651c; border-radius: 28px; background: rgb(11 16 18 / 88%); box-shadow: 0 0 80px rgb(183 238 56 / 12%); transform: rotate(45deg); }
.signal-core img { width: 74px; height: 74px; transform: rotate(-45deg); }
.signal-label { position: absolute; right: 2rem; bottom: 2rem; color: var(--muted-2); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .62rem; font-weight: 800; letter-spacing: .14em; text-align: right; }
@keyframes signal-spin { to { transform: rotate(360deg); } }

.practice-layout { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(310px, .55fr); gap: 1rem; align-items: start; }
.practice-console { min-height: 570px; overflow: hidden; }
.practice-console-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1.25rem 1.35rem; border-bottom: 1px solid var(--line); }
.practice-console-head .eyebrow { margin-bottom: .25rem; }
.practice-console-head h3 { margin: 0; font-size: 1.15rem; }
.practice-empty { min-height: 475px; display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-content: center; align-items: center; gap: 1rem; padding: 2rem; }
.practice-empty img { width: 54px; height: 54px; padding: .65rem; border: 1px solid #52651c; border-radius: 14px; background: var(--green-dark); }
.practice-empty strong { display: block; font-size: 1rem; }
.practice-empty p { max-width: 540px; margin: .25rem 0 0; color: var(--muted); font-size: .78rem; }
.practice-context-line { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: .8rem 1.35rem; border-bottom: 1px solid var(--line); background: rgb(183 238 56 / 4%); color: var(--muted); font-size: .67rem; }
.practice-context-line span { display: inline-flex; align-items: center; gap: .45rem; color: var(--green-bright); font-weight: 750; text-transform: uppercase; letter-spacing: .08em; }
.practice-context-line span i { width: 7px; height: 7px; border-radius: 50%; background: var(--green); }
.practice-context-line strong { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .66rem; }

.practice-mode-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .6rem;
  padding: .8rem 1.35rem;
  border-bottom: 1px solid var(--line);
  background: #0c1214;
}
.practice-mode-tab {
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .65rem .8rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #0e1517;
  color: var(--muted);
  text-align: left;
  cursor: pointer;
}
.practice-mode-tab span { font-size: .76rem; font-weight: 800; }
.practice-mode-tab small { color: var(--muted-2); font-size: .59rem; text-align: right; }
.practice-mode-tab.active { border-color: #52651c; background: rgb(183 238 56 / 7%); color: var(--green-bright); }
.practice-mode-tab.active small { color: #8e9b96; }
.practice-tab-panel { min-height: 430px; }

.challenge-ready {
  min-height: 430px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 1.25rem;
  padding: clamp(1.5rem, 3vw, 2.5rem);
}
.challenge-ready-mark {
  width: 76px;
  height: 76px;
  display: grid;
  place-content: center;
  border: 1px solid #52651c;
  border-radius: 20px;
  background: linear-gradient(145deg, #2b3816, #121a15);
  color: var(--green-bright);
  text-align: center;
  box-shadow: 0 0 50px rgb(183 238 56 / 8%);
}
.challenge-ready-mark span { font-size: 1.65rem; font-weight: 850; line-height: 1; }
.challenge-ready-mark small { color: var(--muted); font-size: .57rem; font-weight: 800; letter-spacing: .11em; text-transform: uppercase; }
.challenge-ready h3 { margin: 0 0 .35rem; font-size: 1.35rem; }
.challenge-ready > div:nth-child(2) > p:not(.eyebrow) { max-width: 650px; margin: 0; color: var(--muted); font-size: .8rem; }
.challenge-ready-meta { display: flex; flex-wrap: wrap; gap: .45rem 1rem; margin-top: 1rem; color: var(--muted-2); font-size: .64rem; }
.challenge-ready-meta strong { color: var(--ink); }

.challenge-loading {
  min-height: 430px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 2rem;
}
.challenge-loading p { margin: .15rem 0 0; color: var(--muted); font-size: .72rem; }
.challenge-loader { width: 30px; height: 30px; border: 2px solid var(--line); border-top-color: var(--green); border-radius: 50%; animation: signal-spin .9s linear infinite; }

.challenge-step { min-height: 430px; }
.challenge-progress-row { display: flex; justify-content: space-between; gap: 1rem; padding: .85rem 1.35rem .25rem; color: var(--muted); font-size: .65rem; }
.challenge-progress-row strong { color: var(--green-bright); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.challenge-stepper {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin: 0;
  padding: .65rem 1.35rem 1rem;
  list-style: none;
}
.challenge-stepper li { position: relative; display: grid; grid-template-columns: 28px 1fr; align-items: center; gap: .45rem; color: var(--muted-2); }
.challenge-stepper li:not(:last-child)::after { content: ""; position: absolute; z-index: 0; left: 27px; right: -1px; top: 14px; height: 1px; background: var(--line); }
.challenge-stepper li > span { position: relative; z-index: 1; display: grid; place-items: center; width: 28px; height: 28px; border: 1px solid var(--line); border-radius: 50%; background: var(--panel); font-size: .62rem; font-weight: 850; }
.challenge-stepper li > small { position: relative; z-index: 1; max-width: 95px; padding-right: .35rem; background: var(--panel); font-size: .56rem; line-height: 1.25; }
.challenge-stepper li.current { color: var(--green-bright); }
.challenge-stepper li.current > span { border-color: var(--green); box-shadow: 0 0 0 4px rgb(183 238 56 / 9%); }
.challenge-stepper li.complete { color: #9bae6e; }
.challenge-stepper li.complete > span { border-color: #52651c; background: var(--green-dark); color: var(--green); }

.challenge-question { padding: 1.15rem 1.35rem 1.35rem; border-top: 1px solid var(--line); }
.challenge-question h3 { margin: 0; font-size: 1.3rem; line-height: 1.35; }
.challenge-question h3:focus { outline: none; }
.challenge-prompt { max-width: 760px; margin: .4rem 0 1.1rem; color: var(--muted); font-size: .78rem; }
.challenge-choice-list { display: grid; gap: .55rem; margin: 0; padding: 0; border: 0; }
.challenge-choice {
  position: relative;
  min-height: 54px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: .75rem;
  padding: .72rem .8rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #0c1214;
  color: #c7d0cc;
  cursor: pointer;
}
.challenge-choice:hover { border-color: #46564f; background: #11191b; }
.challenge-choice:has(input:focus-visible) { outline: 2px solid var(--green); outline-offset: 2px; }
.challenge-choice:has(input:checked) { border-color: #617627; background: rgb(183 238 56 / 7%); color: var(--ink); }
.challenge-choice input { position: absolute; opacity: 0; pointer-events: none; }
.challenge-choice-control { width: 18px; height: 18px; border: 2px solid var(--muted-2); border-radius: 50%; box-shadow: inset 0 0 0 4px #0c1214; }
.challenge-choice input:checked + .challenge-choice-control { border-color: var(--green); background: var(--green); }
.challenge-choice strong, .challenge-choice small { display: block; }
.challenge-choice strong { font-size: .75rem; line-height: 1.45; }
.challenge-choice small { margin-top: .2rem; color: var(--muted-2); font-size: .61rem; }

.challenge-classification { display: grid; gap: .65rem; }
.classification-item { min-height: 72px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(165px, .34fr); align-items: center; gap: 1rem; padding: .8rem; border: 1px solid var(--line); border-radius: 10px; background: #0c1214; }
.classification-item span { color: #c7d0cc; font-size: .74rem; line-height: 1.5; }
.classification-item small { display: block; margin-bottom: .22rem; color: var(--muted-2); font-size: .56rem; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
.classification-item select { width: 100%; min-height: 44px; padding: .6rem 2rem .6rem .65rem; border: 1px solid var(--line); border-radius: 8px; background: var(--panel-2); color: var(--ink); }
.challenge-submit-row { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-top: 1rem; }
.challenge-submit-row > span { color: var(--muted-2); font-size: .62rem; }

.challenge-feedback { margin: 1rem 1.35rem 1.35rem; padding: 1rem; border: 1px solid #52651c; border-radius: 12px; background: linear-gradient(145deg, rgb(37 52 22 / 72%), rgb(13 20 21 / 98%)); }
.challenge-feedback.needs-review { border-color: #6a4c25; background: linear-gradient(145deg, rgb(63 43 18 / 64%), rgb(13 20 21 / 98%)); }
.challenge-feedback-head h3:focus { outline: 2px solid var(--green); outline-offset: 3px; }
.challenge-feedback-head { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: .75rem; }
.challenge-feedback-head > span { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; background: var(--green-dark); color: var(--green); font-weight: 900; }
.challenge-feedback.needs-review .challenge-feedback-head > span { background: var(--amber-dark); color: var(--amber); }
.challenge-feedback-head p { margin: 0; color: var(--green); font-size: .57rem; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.challenge-feedback.needs-review .challenge-feedback-head p { color: var(--amber); }
.challenge-feedback-head h3 { margin: .15rem 0 0; font-size: 1rem; }
.challenge-feedback-head > strong { color: var(--green-bright); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .8rem; }
.challenge-feedback > p { margin: 1rem 0; color: #bdc7c3; font-size: .76rem; line-height: 1.6; }
.challenge-correct-answer, .challenge-references { margin: .75rem 0; padding: .75rem; border: 1px solid rgb(42 54 57 / 75%); border-radius: 8px; background: rgb(7 12 13 / 40%); }
.challenge-correct-answer > span, .challenge-references > span { color: var(--muted-2); font-size: .56rem; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.challenge-correct-answer p { margin: .3rem 0 0; color: var(--ink); font-size: .72rem; }
.challenge-references ul { display: grid; gap: .25rem; margin: .4rem 0 0; padding-left: 1.1rem; color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .61rem; }
.challenge-feedback > .button { margin-left: auto; }

.challenge-complete { min-height: 430px; padding: clamp(1.35rem, 3vw, 2.2rem); }
.challenge-complete-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding-bottom: 1rem; border-bottom: 1px solid var(--line); }
.challenge-complete-head h3 { margin: 0; font-size: 1.45rem; }
.challenge-complete-head h3:focus { outline: none; }
.challenge-complete-head > div:first-child > p:last-child { margin: .25rem 0 0; color: var(--muted); font-size: .72rem; }
.challenge-complete-head > div:first-child > p:last-child strong { color: var(--ink); }
.challenge-total { min-width: 118px; display: flex; align-items: baseline; justify-content: center; gap: .2rem; padding: .75rem 1rem; border: 1px solid #52651c; border-radius: 16px; background: var(--green-dark); }
.challenge-total strong { color: var(--green-bright); font-size: 2.3rem; line-height: 1; }
.challenge-total span { color: var(--muted); font-size: .68rem; }
.challenge-breakdown { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .65rem; margin-top: 1rem; }
.challenge-breakdown > div { display: grid; grid-template-columns: 1fr auto; gap: .35rem .75rem; padding: .75rem; border: 1px solid var(--line); border-radius: 9px; background: #0d1416; }
.challenge-breakdown span { color: var(--muted); font-size: .65rem; }
.challenge-breakdown strong { font-size: .68rem; }
.challenge-breakdown progress { grid-column: 1 / -1; width: 100%; height: 5px; overflow: hidden; border: 0; border-radius: 999px; background: var(--panel-2); }
.challenge-breakdown progress::-webkit-progress-bar { background: var(--panel-2); }
.challenge-breakdown progress::-webkit-progress-value { background: var(--green); }
.challenge-breakdown progress::-moz-progress-bar { background: var(--green); }
.challenge-insight { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .65rem; margin-top: .65rem; }
.challenge-insight > div { padding: .75rem; border-left: 2px solid #52651c; background: rgb(183 238 56 / 3%); }
.challenge-insight span, .challenge-insight strong { display: block; }
.challenge-insight span { color: var(--muted-2); font-size: .55rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.challenge-insight strong { margin-top: .2rem; font-size: .72rem; }
.challenge-complete-actions { display: flex; align-items: center; flex-wrap: wrap; gap: .65rem; margin-top: 1rem; }
.challenge-complete-actions .text-button { margin-left: auto; }
.challenge-complete-actions .button:disabled { cursor: not-allowed; }

.practice-prompts { display: flex; flex-wrap: wrap; gap: .5rem; padding: 1rem 1.35rem 0; }
.practice-prompts button { padding: .48rem .65rem; border: 1px solid var(--line); border-radius: 999px; background: #0d1416; color: var(--muted); font-size: .67rem; cursor: pointer; }
.practice-prompts button:hover { border-color: #52651c; color: var(--green-bright); }
.practice-form { display: grid; gap: .5rem; padding: 1rem 1.35rem 1.35rem; }
.practice-form textarea { min-height: 92px; background: #090e10; }
.practice-form-actions { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.practice-form-actions > span { color: var(--muted-2); font-size: .63rem; }
.practice-response { margin: 0 1.35rem 1.35rem; border: 1px solid #52651c; border-radius: 13px; overflow: hidden; background: linear-gradient(145deg, rgb(28 39 21 / 78%), rgb(12 18 20 / 98%)); }
.practice-response-brand { display: flex; align-items: center; gap: .7rem; padding: .85rem 1rem; border-bottom: 1px solid rgb(82 101 28 / 70%); }
.practice-response-brand img { width: 30px; height: 30px; }
.practice-response-brand div { min-width: 0; }
.practice-response-brand p { margin: 0; color: var(--green); font-size: .57rem; font-weight: 850; letter-spacing: .13em; }
.practice-response-brand strong { font-size: .77rem; }
.practice-response-brand > span { margin-left: auto; color: var(--muted-2); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .58rem; }
.practice-answer-lead { padding: 1.15rem; border-bottom: 1px solid rgb(42 54 57 / 80%); }
.practice-answer-lead > span, .practice-answer-grid span { color: var(--green); font-size: .58rem; font-weight: 850; letter-spacing: .11em; }
.practice-answer-lead p { margin: .45rem 0 0; color: var(--ink); font-size: .86rem; line-height: 1.65; }
.practice-answer-grid { display: grid; grid-template-columns: 1fr 1fr; }
.practice-answer-grid > div { padding: 1rem 1.15rem; border-right: 1px solid rgb(42 54 57 / 80%); }
.practice-answer-grid > div:last-child { border-right: 0; }
.practice-answer-grid p { margin: .4rem 0 0; color: #b7c1bd; font-size: .75rem; line-height: 1.55; }
.practice-caution { display: grid; grid-template-columns: auto 1fr; gap: .7rem; padding: .8rem 1.15rem; border-top: 1px solid rgb(42 54 57 / 80%); background: rgb(245 184 59 / 5%); }
.practice-caution strong { color: var(--amber); font-size: .66rem; }
.practice-caution p { margin: 0; color: var(--muted); font-size: .67rem; }

.practice-context { display: grid; gap: 1rem; }
.context-card { padding: 1.15rem; }
.context-card-head { display: flex; justify-content: space-between; align-items: center; color: var(--muted-2); font-size: .62rem; font-weight: 850; letter-spacing: .11em; }
.context-incident { margin: 1rem 0; padding-bottom: 1rem; border-bottom: 1px solid var(--line); }
.context-incident small, .context-incident strong { display: block; }
.context-incident small { color: var(--muted-2); font-size: .63rem; }
.context-incident strong { margin-top: .2rem; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .75rem; }
.context-card dl { display: grid; grid-template-columns: 1fr 1fr; gap: .55rem; margin: 0; }
.context-card dl div { padding: .7rem; border: 1px solid var(--line); border-radius: 9px; background: #0d1416; }
.context-card dt { color: var(--muted-2); font-size: .58rem; text-transform: uppercase; }
.context-card dd { margin: .15rem 0 0; font-size: 1.15rem; font-weight: 800; }
.context-card dd.safe { color: var(--green); }
.boundary-preview { padding: 1.15rem; border-color: #594221; background: linear-gradient(145deg, rgb(54 38 17 / 78%), rgb(17 22 19 / 96%)); }
.boundary-preview strong { display: block; font-size: .88rem; line-height: 1.55; }
.boundary-preview > span { display: inline-block; margin-top: .8rem; padding: .32rem .45rem; border-radius: 5px; background: rgb(0 0 0 / 28%); color: var(--amber); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .62rem; }
.authority-card { padding: 1.15rem; }
.authority-card > span { color: var(--green); font-size: .6rem; font-weight: 850; letter-spacing: .12em; }
.authority-card h3 { margin: .5rem 0 .35rem; font-size: 1rem; line-height: 1.35; }
.authority-card p { margin-bottom: .8rem; color: var(--muted); font-size: .73rem; }

@media (max-width: 1080px) {
  .app-shell { grid-template-columns: 220px 1fr; }
  .sidebar { padding: 1.2rem 1rem; }
  .brand-logo { width: 188px; }
  .account-card { grid-template-columns: auto minmax(0, 1fr); }
  .account-card .logout-form { grid-column: 2; }
  .workspace-grid { grid-template-columns: 1fr; }
  .timeline-panel { min-height: 0; }
  .overview-kpis { grid-template-columns: repeat(2, 1fr); }
  .equipment-flow { grid-template-columns: 1fr 18px 1fr; }
  .equipment-flow > i:nth-of-type(2) { display: none; }
  .equipment-flow > div:nth-of-type(3) { grid-column: 1; }
  .equipment-flow > i:nth-of-type(3) { grid-column: 2; }
  .equipment-flow > div:nth-of-type(4) { grid-column: 3; }
  .practice-hero { grid-template-columns: minmax(0, 1fr) 250px; }
  .practice-layout { grid-template-columns: 1fr; }
  .practice-context { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .app-shell { display: block; }
  .sidebar { position: static; width: 100%; height: auto; flex-direction: row; justify-content: space-between; padding: .8rem 1rem; border-right: 0; border-bottom: 1px solid var(--line); }
  .sidebar nav, .boundary-card { display: none; }
  .brand-logo { width: 176px; }
  .sidebar-footer { margin: 0; }
  .account-card { grid-template-columns: auto minmax(0, 1fr); min-width: 150px; padding: .45rem; }
  .account-card .logout-form { display: none; }
  main { padding: 1.2rem 1rem 3rem; }
  .topbar, .status-strip, .incident-heading { align-items: flex-start; flex-direction: column; }
  .topbar-actions { width: 100%; flex-wrap: wrap; }
  .topbar-actions .mode-badge { order: 3; }
  .topbar-actions .button { flex: 1; }
  .overview-callout { grid-template-columns: auto 1fr; }
  .overview-callout .read-only-pill { grid-column: 1 / -1; justify-self: start; }
  .overview-kpis, .line-health-grid { grid-template-columns: 1fr 1fr; }
  .equipment-flow { display: grid; grid-template-columns: 1fr; }
  .equipment-flow > i { width: 1px; height: 20px; margin-left: 1.75rem; background: linear-gradient(var(--green), var(--line)); }
  .equipment-flow > i:nth-of-type(2) { display: block; }
  .equipment-flow > div:nth-of-type(3), .equipment-flow > i:nth-of-type(3), .equipment-flow > div:nth-of-type(4) { grid-column: auto; }
  .line-overview-head, .line-actions { align-items: flex-start; flex-direction: column; }
  .source-badges { justify-content: flex-start; }
  .status-strip dl { width: 100%; display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; padding-top: .8rem; border-top: 1px solid var(--line); }
  .empty-state { min-height: 520px; padding: 2.7rem .2rem; }
  .sequence-graphic { width: 100%; overflow-x: auto; justify-content: flex-start; padding-bottom: .5rem; }
  .timeline-event { grid-template-columns: 60px 16px 1fr; }
  .event-value { grid-column: 3; justify-self: start; }
  .confidence-stack { padding-left: 0; border: 0; }
  .diagnosis-panel, .verification-panel form, .case-grid { grid-template-columns: 1fr; }
  .prior-case-card { grid-template-columns: 1fr; }
  .prior-case-card small { text-align: left; }
  .verification-panel label:first-child, .form-actions { grid-column: 1; }
  .form-actions { flex-direction: column-reverse; }
  .practice-hero { grid-template-columns: 1fr; min-height: 0; }
  .practice-hero-copy { padding: 1.5rem; }
  .practice-hero h2 { font-size: clamp(2.25rem, 11vw, 3.7rem); }
  .practice-signal { display: none; }
  .practice-proof-grid { grid-template-columns: 1fr; }
  .practice-empty { grid-template-columns: 1fr; text-align: left; }
  .practice-empty .button { width: 100%; }
  .challenge-ready { grid-template-columns: 1fr; align-content: center; }
  .challenge-ready .button { width: 100%; }
  .challenge-stepper { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .4rem; }
  .challenge-stepper li { padding: .25rem; border: 1px solid var(--line); border-radius: 8px; }
  .challenge-stepper li:not(:last-child)::after { display: none; }
  .classification-item { grid-template-columns: 1fr; }
  .challenge-submit-row { align-items: stretch; flex-direction: column; }
  .challenge-submit-row .button { width: 100%; }
  .challenge-complete-head { align-items: flex-start; flex-direction: column; }
  .challenge-breakdown { grid-template-columns: 1fr; }
  .challenge-insight { grid-template-columns: 1fr; }
  .challenge-complete-actions { align-items: stretch; flex-direction: column; }
  .challenge-complete-actions .button { width: 100%; }
  .challenge-complete-actions .text-button { margin: .35rem 0 0; align-self: flex-start; }
  .practice-form-actions { align-items: stretch; flex-direction: column; }
  .practice-answer-grid { grid-template-columns: 1fr; }
  .practice-answer-grid > div { border-right: 0; border-bottom: 1px solid rgb(42 54 57 / 80%); }
  .practice-answer-grid > div:last-child { border-bottom: 0; }
  .practice-context { grid-template-columns: 1fr; }
  .practice-response-brand > span { display: none; }
}

@media (max-width: 480px) {
  .sidebar { gap: .45rem; padding: .7rem .75rem; }
  .brand-logo { width: 128px; }
  .account-card { min-width: 0; max-width: 154px; grid-template-columns: minmax(0, 1fr); padding: .42rem .55rem; }
  .account-card .user-avatar { display: none; }
  main { padding-inline: .75rem; }
  .user-chip { max-width: 100%; }
  .practice-hero-copy { padding: 1.3rem 1.1rem; }
  .practice-console-head, .practice-context-line, .practice-mode-tabs, .practice-prompts, .practice-form { padding-inline: 1rem; }
  .practice-mode-tabs { grid-template-columns: 1fr; }
  .challenge-ready, .challenge-question, .challenge-complete { padding-inline: 1rem; }
  .challenge-progress-row, .challenge-stepper { padding-inline: 1rem; }
  .challenge-feedback { margin-inline: 1rem; }
  .challenge-feedback-head { grid-template-columns: auto 1fr; }
  .challenge-feedback-head > strong { grid-column: 2; }
  .practice-response { margin-inline: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
  .signal-ring, .challenge-loader { animation: none !important; }
}