:root {
  --white: #FFFFFF;
  --bg: #F4F7F9;
  --bg-raised: #FFFFFF;
  --bg-inset: #EDF1F4;
  --graphite: #1A2028;
  --graphite-mid: #2D3640;
  --graphite-soft: #3E4C5A;
  --teal: #1DB8A0;
  --teal-dark: #148A77;
  --teal-pale: #E3F7F4;
  --teal-dim: #6DD5C5;
  --gray: #5C6B7A;
  --gray-light: #8A9BAD;
  --gray-pale: #B8C5D0;
  --border: #D6E0E8;
  --border-strong: #B8C5D0;
  --text-primary: #1A2028;
  --text-secondary: #3E4C5A;
  --text-muted: #5C6B7A;
  --text-faint: #8A9BAD;
  --shadow-xs: 0 1px 3px rgba(26,32,40,0.08);
  --shadow-sm: 0 2px 8px rgba(26,32,40,0.10);
  --shadow-md: 0 6px 24px rgba(26,32,40,0.12);
  --font-ibm: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", "Courier New", monospace;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --t-fast: 150ms;
  --t-mid: 280ms;
  --t-slow: 520ms;
  --topbar-h: 58px;
  --max-w: 1360px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111820;
    --bg-raised: #1A2028;
    --bg-inset: #0D1318;
    --border: #2D3A44;
    --border-strong: #3E4C5A;
    --text-primary: #E8EEF3;
    --text-secondary: #B8C5D0;
    --text-muted: #8A9BAD;
    --text-faint: #5C6B7A;
    --shadow-xs: 0 1px 3px rgba(0,0,0,0.35);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.45);
    --shadow-md: 0 6px 24px rgba(0,0,0,0.55);
    --teal-pale: rgba(29,184,160,0.10);
  }
}

[data-theme="dark"] {
  --bg: #111820;
  --bg-raised: #1A2028;
  --bg-inset: #0D1318;
  --border: #2D3A44;
  --border-strong: #3E4C5A;
  --text-primary: #E8EEF3;
  --text-secondary: #B8C5D0;
  --text-muted: #8A9BAD;
  --text-faint: #5C6B7A;
  --shadow-xs: 0 1px 3px rgba(0,0,0,0.35);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.45);
  --shadow-md: 0 6px 24px rgba(0,0,0,0.55);
  --teal-pale: rgba(29,184,160,0.10);
}

[data-theme="light"] {
  --bg: #F4F7F9;
  --bg-raised: #FFFFFF;
  --bg-inset: #EDF1F4;
  --border: #D6E0E8;
  --border-strong: #B8C5D0;
  --text-primary: #1A2028;
  --text-secondary: #3E4C5A;
  --text-muted: #5C6B7A;
  --text-faint: #8A9BAD;
  --shadow-xs: 0 1px 3px rgba(26,32,40,0.08);
  --shadow-sm: 0 2px 8px rgba(26,32,40,0.10);
  --shadow-md: 0 6px 24px rgba(26,32,40,0.12);
  --teal-pale: #E3F7F4;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--topbar-h) + 1.5rem);
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-ibm);
  background-color: var(--bg);
  color: var(--text-secondary);
  line-height: 1.65;
  min-height: 100vh;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

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

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 300;
  height: var(--topbar-h);
  background: var(--graphite);
  border-bottom: 1px solid rgba(29,184,160,0.2);
  transition: transform var(--t-mid) var(--ease-in-out),
              box-shadow var(--t-mid) var(--ease-in-out);
}

.topbar.hidden {
  transform: translateY(-100%);
}

.topbar.peeking {
  transform: translateY(0);
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.topbar-inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
  height: 100%;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.topbar-brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  flex-shrink: 0;
  text-decoration: none;
}

.topbar-brand-icon {
  flex-shrink: 0;
}

.topbar-brand-text {
  display: flex;
  flex-direction: column;
}

.topbar-brand-name {
  font-family: var(--font-ibm);
  font-size: 0.92rem;
  font-weight: 600;
  color: #E8EEF3;
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.topbar-brand-sub {
  font-family: var(--font-mono);
  font-size: 0.54rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal-dim);
  margin-top: 2px;
  line-height: 1;
}

.topbar-nav {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.topbar-nav::-webkit-scrollbar {
  display: none;
}

.topbar-navlink {
  display: inline-block;
  padding: 0.4rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(232,238,243,0.55);
  white-space: nowrap;
  transition: color var(--t-fast);
  position: relative;
}

.topbar-navlink::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0.75rem;
  right: 0.75rem;
  height: 1.5px;
  background: var(--teal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-mid) var(--ease-out);
}

.topbar-navlink:hover,
.topbar-navlink.current {
  color: #E8EEF3;
}

.topbar-navlink:hover::after,
.topbar-navlink.current::after {
  transform: scaleX(1);
}

.topbar-theme {
  margin-left: auto;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid rgba(29,184,160,0.25);
  background: transparent;
  color: rgba(232,238,243,0.5);
  transition: border-color var(--t-fast), color var(--t-fast);
}

.topbar-theme:hover {
  border-color: var(--teal);
  color: var(--teal-dim);
}

.topbar-theme-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
  flex-shrink: 0;
}

.topbar-theme-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.lead-zone {
  background: var(--graphite);
  border-bottom: 1px solid rgba(29,184,160,0.15);
}

.lead-zone-inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
  padding-block: clamp(2.5rem, 6vw, 5rem) clamp(2rem, 5vw, 4rem);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.lead-protocol-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  border: 1px solid rgba(29,184,160,0.3);
  background: rgba(29,184,160,0.06);
  padding: 0.3rem 0.65rem;
  margin-bottom: 1.5rem;
}

.lead-headline {
  font-family: var(--font-ibm);
  font-size: clamp(2.8rem, 9vw, 5.5rem);
  font-weight: 700;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: #E8EEF3;
  margin-bottom: 1.5rem;
}

.lead-standfirst {
  font-size: clamp(0.94rem, 1.5vw, 1.04rem);
  line-height: 1.72;
  color: rgba(184,197,208,0.85);
  max-width: 54ch;
  margin-bottom: 2rem;
  font-weight: 300;
}

.lead-authline {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(29,184,160,0.15);
}

.lead-author {
  display: flex;
  flex-direction: column;
}

.lead-author-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: #E8EEF3;
  letter-spacing: -0.01em;
}

.lead-author-role {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: rgba(138,155,173,0.7);
  text-transform: uppercase;
  margin-top: 2px;
}

.lead-meta {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.06em;
  color: rgba(138,155,173,0.6);
}

.lead-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: rgba(29,184,160,0.5);
}

.sensor-frame {
  position: relative;
  border: 1px solid rgba(29,184,160,0.25);
  background: var(--graphite-mid);
}

.sensor-frame-tl {
  position: absolute;
  top: -1px;
  left: -1px;
  width: 16px;
  height: 16px;
  border-top: 2px solid var(--teal);
  border-left: 2px solid var(--teal);
}

.sensor-frame-br {
  position: absolute;
  bottom: -1px;
  right: -1px;
  width: 16px;
  height: 16px;
  border-bottom: 2px solid var(--teal);
  border-right: 2px solid var(--teal);
}

.sensor-frame-status {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(26,32,40,0.85);
  border: 1px solid rgba(29,184,160,0.2);
  padding: 0.2rem 0.5rem;
  z-index: 2;
}

.sf-pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.sf-status-text {
  font-family: var(--font-mono);
  font-size: 0.54rem;
  letter-spacing: 0.12em;
  color: var(--teal-dim);
}

.lead-fig {
  margin: 0;
}

.lead-fig img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.7) contrast(1.08);
  display: block;
}

.sensor-frame-data {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.8rem;
  background: var(--graphite-soft);
  border-top: 1px solid rgba(29,184,160,0.15);
}

.sfd-item {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--teal-dim);
}

.sfd-sep {
  color: rgba(29,184,160,0.3);
  font-size: 0.8rem;
}

.lead-fig-caption {
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  line-height: 1.55;
  color: var(--gray-light);
  padding-left: 0.6rem;
  border-left: 1.5px solid rgba(29,184,160,0.35);
}

.param-strip {
  background: var(--bg-raised);
  border-bottom: 1px solid var(--border);
}

.param-strip-inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.param-unit {
  padding: clamp(1.2rem, 3vw, 2rem) clamp(1rem, 2.5vw, 1.8rem);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
}

.param-unit:nth-child(2n) {
  border-right: none;
}

.param-unit:nth-last-child(-n+2) {
  border-bottom: none;
}

.param-divider {
  display: none;
}

.param-thermo {
  display: flex;
  align-items: flex-end;
  gap: 0.6rem;
}

.param-value {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 4.5vw, 2.2rem);
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.04em;
  line-height: 1;
}

.param-value-plain {
  display: block;
  margin-bottom: 0.1rem;
}

.param-unit-sup {
  font-size: 0.55em;
  font-weight: 400;
  color: var(--teal);
  letter-spacing: 0;
  vertical-align: super;
  margin-left: 0.05em;
}

.param-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  line-height: 1.4;
  max-width: 24ch;
}

.reading-layout {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 4vw, 3.5rem);
  padding-block: clamp(2.5rem, 6vw, 5rem);
}

.aside-col {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  order: -1;
}

.aside-card {
  border: 1px solid var(--border);
  background: var(--bg-raised);
}

.aside-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--teal-dark);
  padding: 0.65rem 1.2rem;
  border-bottom: 1px solid var(--border);
  background: var(--teal-pale);
}

.aside-toc {
  display: flex;
  flex-direction: column;
}

.aside-toc-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 1.2rem;
  font-size: 0.86rem;
  color: var(--text-muted);
  border-left: 2px solid transparent;
  border-bottom: 1px solid var(--border);
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}

.aside-toc-link:last-child {
  border-bottom: none;
}

.aside-toc-link::before {
  content: attr(data-seg);
  font-family: var(--font-mono);
  font-size: 0.54rem;
  letter-spacing: 0.1em;
  color: var(--teal-dark);
  background: var(--teal-pale);
  padding: 0.1rem 0.3rem;
  flex-shrink: 0;
}

.aside-toc-link:hover {
  color: var(--text-primary);
  background: var(--bg-inset);
}

.aside-toc-link.active {
  color: var(--teal-dark);
  border-left-color: var(--teal);
  background: var(--teal-pale);
}

.aside-contact-card {
  border-top: 2px solid var(--teal);
}

.aside-contact-desc {
  font-size: 0.84rem;
  line-height: 1.65;
  color: var(--text-secondary);
  padding: 0.9rem 1.2rem;
}

.aside-form {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0 1.2rem 0.9rem;
}

.aside-input {
  width: 100%;
  font-family: var(--font-ibm);
  font-size: 0.88rem;
  color: var(--text-primary);
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 0.55rem 0.8rem;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}

.aside-input::placeholder {
  color: var(--text-faint);
}

.aside-input:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(29,184,160,0.12);
}

.aside-btn {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--graphite);
  background: var(--teal);
  border: none;
  padding: 0.6rem 1rem;
  cursor: pointer;
  transition: background var(--t-fast), transform var(--t-fast);
}

.aside-btn:hover {
  background: var(--teal-dark);
  transform: translateY(-1px);
}

.aside-disclaimer {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.04em;
  color: var(--text-faint);
  padding: 0 1.2rem 0.9rem;
  line-height: 1.5;
}

.aside-specs {
  display: flex;
  flex-direction: column;
}

.aside-spec-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.2rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.82rem;
}

.aside-spec-row:last-child {
  border-bottom: none;
}

.aside-spec-row dt {
  color: var(--text-muted);
  font-weight: 400;
  font-size: 0.78rem;
}

.aside-spec-row dd {
  color: var(--text-primary);
  font-weight: 600;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.02em;
  text-align: right;
}

.chapters-area {
  min-width: 0;
}

.chapter {
  margin-bottom: clamp(3rem, 7vw, 6rem);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--t-slow) var(--ease-out),
              transform var(--t-slow) var(--ease-out);
}

.chapter.visible {
  opacity: 1;
  transform: translateY(0);
}

.chapter:last-child {
  margin-bottom: 0;
}

.chapter-header {
  margin-bottom: clamp(1.5rem, 3vw, 2.2rem);
}

.chapter-seg {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--teal);
  background: var(--teal-pale);
  padding: 0.2rem 0.55rem;
  border: 1px solid rgba(29,184,160,0.25);
  margin-bottom: 0.7rem;
}

.chapter-title {
  font-family: var(--font-ibm);
  font-size: clamp(1.3rem, 3vw, 1.75rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.22;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.chapter-rule {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--teal) 0px, var(--teal) 28px, var(--border) 28px);
}

.qa-block {
  margin-bottom: clamp(1.5rem, 3.5vw, 2.5rem);
}

.q-row {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-left: 3px solid var(--graphite-soft);
  padding: 1.1rem 1.3rem;
  margin-bottom: 1.1rem;
}

[data-theme="dark"] .q-row {
  border-left-color: var(--gray-pale);
}

.speaker-chip {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 0.18rem 0.5rem;
  margin-bottom: 0.55rem;
}

.speaker-q {
  background: var(--graphite);
  color: rgba(232,238,243,0.8);
  border: 1px solid rgba(232,238,243,0.1);
}

.speaker-a {
  background: var(--teal-pale);
  color: var(--teal-dark);
  border: 1px solid rgba(29,184,160,0.25);
}

.q-content {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.a-row {
  padding-left: clamp(0.8rem, 2vw, 1.4rem);
  border-left: 2px solid var(--teal);
}

.a-content {
  padding-top: 0.2rem;
}

.body-text {
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 1.1rem;
  font-weight: 300;
}

.body-text:last-child {
  margin-bottom: 0;
}

.pull-quote {
  margin: 1.8rem 0;
  padding: 1.2rem 1.4rem 1.2rem 1.2rem;
  border-left: 2px solid var(--teal);
  background: var(--bg-raised);
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
}

.pq-temp-badge {
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.pq-text {
  font-size: clamp(0.98rem, 1.8vw, 1.1rem);
  font-weight: 500;
  line-height: 1.52;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.tech-checklist {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  margin: 1.2rem 0;
}

.tcl-item {
  display: flex;
  gap: 0.9rem;
  padding: 0.9rem 1.1rem;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-left: none;
  position: relative;
}

.tcl-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--teal-pale);
}

.tcl-icon {
  flex-shrink: 0;
  margin-top: 2px;
  width: 16px;
}

.tcl-body {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--text-secondary);
  font-weight: 300;
}

.tcl-label {
  display: block;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.88rem;
  margin-bottom: 0.2rem;
  letter-spacing: -0.01em;
}

.media-block {
  margin: 1.8rem 0;
  border: 1px solid var(--border);
  background: var(--bg-raised);
  padding: 0.5rem;
  position: relative;
}

.media-block::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 14px;
  height: 14px;
  border-top: 2px solid var(--teal);
  border-left: 2px solid var(--teal);
}

.media-block::after {
  content: "";
  position: absolute;
  bottom: -1px;
  right: -1px;
  width: 14px;
  height: 14px;
  border-bottom: 2px solid var(--teal);
  border-right: 2px solid var(--teal);
}

.media-fig {
  margin: 0;
}

.media-fig img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(0.75) contrast(1.06);
  display: block;
}

.media-caption {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  line-height: 1.55;
  color: var(--text-faint);
}

.media-caption-tag {
  color: var(--teal);
  font-weight: 600;
  flex-shrink: 0;
  letter-spacing: 0.08em;
}

.temp-infographic {
  margin: 1.8rem 0;
  border: 1px solid var(--border);
  background: var(--bg-raised);
  overflow: hidden;
}

.temp-ig-title {
  padding: 0.75rem 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--bg-inset);
  border-bottom: 1px solid var(--border);
}

.temp-ig-grid {
  padding: 1rem 1.2rem 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.temp-ig-bar-row {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.tib-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  min-width: 160px;
  flex-shrink: 0;
}

.tib-track {
  flex: 1;
  min-width: 120px;
  height: 10px;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  position: relative;
  display: flex;
  align-items: center;
}

.tib-fill {
  position: absolute;
  left: var(--fill-from);
  width: calc(var(--fill-to) - var(--fill-from));
  height: 100%;
  background: var(--teal);
  opacity: 0.75;
}

.tib-range {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.06em;
  color: var(--teal-dark);
  margin-left: 0.5rem;
  white-space: nowrap;
  flex-shrink: 0;
}

.temp-ig-axis {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 1.2rem 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.04em;
  color: var(--text-faint);
  border-top: 1px solid var(--border);
  margin-top: 0.5rem;
}

.client-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.8rem;
  margin: 1.5rem 0;
}

.client-card {
  border: 1px solid var(--border);
  background: var(--bg-raised);
  padding: 1.2rem;
  transition: box-shadow var(--t-mid), border-color var(--t-mid);
}

.client-card:hover {
  box-shadow: var(--shadow-sm);
  border-color: rgba(29,184,160,0.3);
}

.client-card-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.7rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--border);
}

.client-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--teal-pale);
  border: 1px solid rgba(29,184,160,0.2);
}

.client-card-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.client-card-desc {
  font-size: 0.86rem;
  line-height: 1.65;
  color: var(--text-secondary);
  font-weight: 300;
  margin-bottom: 0.8rem;
}

.client-card-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  color: var(--teal-dark);
  background: var(--teal-pale);
  border: 1px solid rgba(29,184,160,0.25);
  padding: 0.18rem 0.5rem;
}

.info-panel {
  display: flex;
  gap: 0.9rem;
  margin: 1.8rem 0;
  padding: 1.2rem 1.3rem;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-top: 2px solid var(--teal);
}

.info-panel-icon {
  flex-shrink: 0;
  margin-top: 2px;
}

.info-panel-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
  letter-spacing: -0.01em;
}

.info-panel-text {
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--text-secondary);
  font-weight: 300;
}

.faq-section {
  margin: 1.8rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.faq-item {
  border: 1px solid var(--border);
  background: var(--bg-raised);
  overflow: hidden;
  transition: border-color var(--t-fast);
}

.faq-item[open] {
  border-color: rgba(29,184,160,0.3);
}

.faq-summ {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.2rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
  list-style: none;
  cursor: pointer;
  letter-spacing: -0.01em;
  transition: background var(--t-fast);
}

.faq-summ::-webkit-details-marker {
  display: none;
}

.faq-summ:hover {
  background: var(--bg-inset);
}

.faq-chevron {
  flex-shrink: 0;
  color: var(--teal);
  transition: transform var(--t-fast);
}

.faq-item[open] .faq-chevron {
  transform: rotate(180deg);
}

.faq-body {
  padding: 0 1.2rem 1rem;
  border-top: 1px solid var(--border);
}

.faq-body .body-text {
  margin-top: 0.8rem;
  font-size: 0.9rem;
}

.closing-section {
  margin-top: 3rem;
  padding-top: 1.8rem;
  border-top: 1px solid var(--border);
}

.closing-para {
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 0.7rem;
  font-weight: 300;
}

.closing-para strong {
  color: var(--text-primary);
  font-weight: 600;
}

.closing-para:last-child {
  margin-bottom: 0;
}

.footer {
  background: var(--graphite);
  border-top: 1px solid rgba(29,184,160,0.12);
  margin-top: 4rem;
}

.footer-inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
  padding-block: clamp(2.5rem, 6vw, 4rem);
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 1rem;
}

.footer-logo-name {
  font-size: 0.96rem;
  font-weight: 600;
  color: #E8EEF3;
  letter-spacing: -0.01em;
}

.footer-desc {
  font-size: 0.86rem;
  line-height: 1.72;
  color: rgba(138,155,173,0.7);
  max-width: 46ch;
  font-weight: 300;
}

.footer-col-head {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal-dim);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(29,184,160,0.15);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-link {
  font-size: 0.86rem;
  color: rgba(138,155,173,0.65);
  font-weight: 300;
  transition: color var(--t-fast);
}

.footer-link:hover {
  color: rgba(184,197,208,0.9);
}

.footer-address {
  font-style: normal;
  font-size: 0.86rem;
  line-height: 1.9;
  color: rgba(138,155,173,0.65);
  font-weight: 300;
}

.footer-company {
  font-weight: 600;
  color: #E8EEF3;
  font-size: 0.94rem;
  display: block;
  margin-bottom: 0.1rem;
}

.footer-contact-link {
  color: var(--teal-dim);
  transition: color var(--t-fast);
}

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

.footer-bottom {
  border-top: 1px solid rgba(29,184,160,0.08);
  background: rgba(0,0,0,0.2);
  padding-block: 1rem;
}

.footer-bottom-inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.footer-legal {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.04em;
  line-height: 1.65;
  color: rgba(92,107,122,0.5);
}

.cbh-toast {
  position: fixed;
  left: 50%;
  bottom: 2rem;
  transform: translate(-50%, 180%);
  z-index: 600;
  background: var(--graphite);
  border: 1px solid rgba(29,184,160,0.3);
  border-top: 1.5px solid var(--teal);
  color: rgba(184,197,208,0.9);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  padding: 0.8rem 1.3rem;
  box-shadow: var(--shadow-md);
  max-width: calc(100% - 2rem);
  transition: transform var(--t-slow) var(--ease-out),
              opacity var(--t-slow) var(--ease-out);
  opacity: 0;
}

.cbh-toast.show {
  transform: translate(-50%, 0);
  opacity: 1;
}

.cbh-cookie {
  position: fixed;
  left: 50%;
  bottom: 1rem;
  transform: translate(-50%, 200%);
  z-index: 500;
  width: calc(100% - 2rem);
  max-width: 700px;
  background: var(--graphite-mid);
  border: 1px solid rgba(29,184,160,0.2);
  border-top: 1.5px solid var(--teal);
  padding: 1.2rem 1.4rem;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: transform var(--t-slow) var(--ease-out);
}

.cbh-cookie.show {
  transform: translate(-50%, 0);
}

.cbh-cookie-text {
  font-size: 0.84rem;
  line-height: 1.65;
  color: rgba(184,197,208,0.8);
  font-weight: 300;
}

.cbh-cookie-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.cbh-cookie-btn {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border: 1px solid;
  cursor: pointer;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}

.cbh-cookie-btn-accept {
  background: var(--teal);
  color: var(--graphite);
  border-color: var(--teal);
}

.cbh-cookie-btn-accept:hover {
  background: var(--teal-dark);
  border-color: var(--teal-dark);
}

.cbh-cookie-btn-decline {
  background: transparent;
  color: rgba(138,155,173,0.7);
  border-color: rgba(138,155,173,0.25);
}

.cbh-cookie-btn-decline:hover {
  border-color: rgba(138,155,173,0.5);
  color: rgba(184,197,208,0.8);
}

@media (min-width: 540px) {
  .param-strip-inner {
    grid-template-columns: repeat(4, 1fr);
  }
  .param-unit {
    border-bottom: none;
    border-right: 1px solid var(--border);
  }
  .param-unit:nth-child(2n) {
    border-right: 1px solid var(--border);
  }
  .param-unit:last-child {
    border-right: none;
  }
  .param-unit:nth-last-child(-n+2) {
    border-bottom: none;
  }
  .client-grid {
    grid-template-columns: 1fr 1fr;
  }
  .aside-form {
    flex-direction: row;
  }
  .aside-btn {
    flex-shrink: 0;
    white-space: nowrap;
  }
  .cbh-cookie {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
  .cbh-cookie-actions {
    flex: 0 0 auto;
  }
}

@media (min-width: 768px) {
  .lead-zone-inner {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1024px) {
  .topbar-nav {
    overflow: visible;
  }
  .reading-layout {
    grid-template-columns: 270px 1fr;
    align-items: start;
  }
  .aside-col {
    order: 0;
    position: sticky;
    top: calc(var(--topbar-h) + 1.5rem);
  }
  .footer-inner {
    grid-template-columns: 1.5fr 1fr 1.1fr;
  }
  .footer-brand {
    grid-column: auto;
  }
  .aside-form {
    flex-direction: column;
  }
  .aside-btn {
    width: 100%;
  }
}

@media (min-width: 1200px) {
  .reading-layout {
    grid-template-columns: 290px 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .chapter {
    opacity: 1;
    transform: none;
  }
  .sf-pulse {
    animation: none;
  }
}