/* SIREN paper page -------------------------------------------------------- */

.siren-page {
  background: #05070d;
}

.siren-page .light {
  --ink-3: #626b7d;
}

.siren-page :where(a, button, input, [tabindex]):focus-visible {
  outline: 3px solid var(--indigo);
  outline-offset: 3px;
}

.siren-page main {
  position: relative;
  z-index: 1;
}

.siren-page button,
.siren-page input {
  font: inherit;
}

.siren-page button {
  color: inherit;
}

/* Navigation -------------------------------------------------------------- */

.siren-nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  color: #eef0f7;
  background: rgba(5, 7, 13, 0.78);
  border-bottom: 1px solid rgba(255, 255, 255, 0.065);
  -webkit-backdrop-filter: blur(16px) saturate(125%);
  backdrop-filter: blur(16px) saturate(125%);
}

.siren-nav-inner {
  min-height: 4.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.siren-nav-home,
.siren-nav-links a {
  font-family: var(--mono);
  text-decoration: none;
  letter-spacing: 0.08em;
  transition: color 180ms ease;
}

.siren-nav-home {
  color: var(--ink-2);
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
}

.siren-nav-home span {
  color: var(--crimson);
  margin-right: 0.25rem;
}

.siren-nav-links {
  display: flex;
  gap: clamp(0.9rem, 2.2vw, 1.8rem);
}

.siren-nav-links a {
  color: var(--ink-3);
  font-size: 0.76rem;
  font-weight: 500;
  text-transform: uppercase;
}

.siren-nav a:hover {
  color: var(--ink);
}

/* Hero -------------------------------------------------------------------- */

.siren-masthead {
  position: relative;
  z-index: 2;
  min-height: 100svh;
  padding: clamp(8rem, 14vh, 10rem) 0 0;
  overflow: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 80% 24%, rgba(224, 69, 95, 0.15), transparent 28rem),
    radial-gradient(circle at 68% 92%, rgba(125, 141, 255, 0.1), transparent 31rem),
    #05070d;
}

.siren-masthead::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(224, 69, 95, 0.75), rgba(125, 141, 255, 0.5), transparent);
}

.siren-masthead-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(25rem, 1.06fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 6rem);
}

.siren-hero-copy {
  position: relative;
  z-index: 2;
  grid-column: 1;
  grid-row: 1;
}

.siren-hero-art {
  grid-column: 2;
  grid-row: 1;
}

.siren-hero-copy .eyebrow {
  margin-bottom: 1.25rem;
}

.siren-hero-copy .eyebrow b {
  white-space: nowrap;
}

.siren-hero-copy h1 {
  margin: 0 0 1.5rem;
  font-family: var(--display);
  font-size: clamp(5.2rem, 11vw, 9.2rem);
  font-weight: 800;
  line-height: 0.82;
  letter-spacing: -0.07em;
}

.siren-hero-claim {
  max-width: 19ch;
  margin: 0 0 1rem;
  font-family: var(--display);
  font-size: clamp(1.7rem, 3.3vw, 2.55rem);
  font-weight: 650;
  line-height: 1.13;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.siren-hero-deck {
  max-width: 37rem;
  margin: 0 0 1.5rem;
  color: var(--ink-2);
  font-size: clamp(1rem, 1.45vw, 1.12rem);
  line-height: 1.65;
  text-wrap: pretty;
}

.siren-hero-deck > b,
.siren-expansion b {
  color: var(--ink);
  font-weight: 650;
}

.siren-authors {
  max-width: 43rem;
  margin: 0 0 1.7rem;
  color: var(--ink-3);
  font-size: 0.82rem;
  line-height: 1.7;
}

.siren-authors b {
  color: var(--ink-2);
  font-weight: 600;
}

.siren-hero-links {
  gap: 0.55rem;
}

.siren-hero-links .chip {
  padding: 0.58rem 0.88rem;
}

.siren-hero-links .chip svg {
  width: 1.05rem;
  height: 1.05rem;
  flex: 0 0 auto;
}

.siren-pdf-mark,
.siren-hf-mark,
.siren-terminal-mark {
  display: inline-grid;
  place-items: center;
  height: 1.05rem;
  border: 1px solid currentColor;
  border-radius: 2px;
  font-size: 0.48rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  line-height: 1;
}

.siren-pdf-mark {
  min-width: 1.5rem;
  padding-inline: 0.17rem;
}

.siren-hf-mark,
.siren-terminal-mark {
  min-width: 1.25rem;
  padding-inline: 0.14rem;
}

.siren-terminal-mark {
  border: 0;
  font-size: 0.63rem;
}

.siren-hero-links .siren-chip-primary {
  border-color: var(--ink);
  background: var(--ink);
  color: #070910;
}

.siren-hero-links .siren-chip-primary:hover {
  background: #fff;
  color: #05070d;
}

.siren-hero-art {
  position: relative;
  min-height: clamp(27rem, 42vw, 35rem);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.075);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.025), transparent 50%),
    rgba(8, 11, 20, 0.76);
  box-shadow: 0 32px 90px rgba(0, 0, 0, 0.28);
}

.siren-hero-art::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 2.6rem 2.6rem;
  -webkit-mask-image: linear-gradient(150deg, #000, transparent 78%);
  mask-image: linear-gradient(150deg, #000, transparent 78%);
  pointer-events: none;
}

.siren-hero-art-top {
  position: absolute;
  inset: 1.2rem 1.3rem auto;
  z-index: 3;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--ink-3);
  font-family: var(--mono);
  font-size: 0.63rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.siren-hero-input {
  position: absolute;
  inset: 4.25rem 2rem auto 2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--ink-3);
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.siren-hero-input i {
  position: relative;
  flex: 1;
  height: 1px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.09);
}

.siren-hero-input i::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 24%;
  background: linear-gradient(90deg, transparent, var(--crimson), transparent);
  animation: sirenScan 2.8s linear infinite;
}

.siren-hero-layers {
  position: absolute;
  inset: 7.2rem 2.25rem 7rem;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  align-items: center;
  gap: clamp(0.28rem, 0.75vw, 0.62rem);
  transform: perspective(850px) rotateY(-7deg);
}

.siren-hero-layer {
  position: relative;
  display: grid;
  grid-template-rows: repeat(9, 1fr);
  gap: clamp(0.24rem, 0.55vw, 0.42rem);
  min-width: 0;
  height: calc(10rem + var(--layer-rise, 0rem));
  padding: 0.45rem 0.35rem;
  border: 1px solid rgba(255, 255, 255, 0.045);
  background: rgba(255, 255, 255, 0.018);
}

.siren-hero-layer::after {
  content: attr(data-layer);
  position: absolute;
  top: calc(100% + 0.4rem);
  left: 50%;
  transform: translateX(-50%);
  color: var(--ink-3);
  font-family: var(--mono);
  font-size: 0.48rem;
}

.siren-hero-layer span {
  min-height: 0.32rem;
  border-radius: 2px;
  background: rgba(169, 177, 199, 0.11);
}

.siren-hero-layer span.is-safety {
  background: var(--signal-color, var(--crimson));
  box-shadow: 0 0 13px color-mix(in srgb, var(--signal-color, var(--crimson)) 68%, transparent);
  animation: sirenPulse 3.2s ease-in-out infinite;
  animation-delay: var(--delay, 0ms);
}

.siren-hero-wire {
  position: absolute;
  right: 4rem;
  bottom: 5.2rem;
  width: 8rem;
  height: 1px;
  transform: rotate(12deg);
  transform-origin: right;
  background: linear-gradient(90deg, transparent, rgba(224, 69, 95, 0.65));
}

.siren-hero-score {
  position: absolute;
  right: 1.35rem;
  bottom: 1.3rem;
  z-index: 3;
  min-width: 11rem;
  padding: 0.85rem 0.95rem 0.9rem;
  border: 1px solid rgba(224, 69, 95, 0.42);
  border-radius: 5px;
  background: rgba(5, 7, 13, 0.9);
  box-shadow: 0 0 42px rgba(224, 69, 95, 0.13);
}

.siren-hero-score > span,
.siren-hero-score > strong,
.siren-hero-score > em {
  display: block;
}

.siren-hero-score > span {
  color: var(--ink-3);
  font-family: var(--mono);
  font-size: 0.57rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.siren-hero-score > strong {
  margin: 0.15rem 0 0.4rem;
  font-family: var(--display);
  font-size: 2.15rem;
  line-height: 1;
  letter-spacing: -0.04em;
}

.siren-hero-score > i {
  position: relative;
  display: block;
  height: 3px;
  margin-right: 2.5rem;
  background: rgba(255, 255, 255, 0.11);
}

.siren-hero-score > i b {
  display: block;
  width: 87%;
  height: 100%;
  background: linear-gradient(90deg, var(--indigo), var(--crimson));
}

.siren-hero-score > em {
  position: absolute;
  right: 0.9rem;
  bottom: 0.7rem;
  color: #ff91a4;
  font-family: var(--mono);
  font-size: 0.62rem;
  font-style: normal;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

@keyframes sirenScan {
  from { transform: translateX(-110%); }
  to { transform: translateX(520%); }
}

@keyframes sirenPulse {
  0%, 100% { opacity: 0.52; transform: scaleX(0.82); }
  50% { opacity: 1; transform: scaleX(1); }
}

.siren-proof-rail {
  grid-column: 1 / -1;
  grid-row: 2;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.siren-proof {
  min-height: 8.7rem;
  padding: 1.8rem clamp(1rem, 2.2vw, 1.8rem);
  border-left: 1px solid var(--line);
}

.siren-proof:last-child {
  border-right: 1px solid var(--line);
}

.siren-proof strong,
.siren-proof span {
  display: block;
}

.siren-proof strong {
  margin-bottom: 0.55rem;
  font-family: var(--display);
  font-size: clamp(1.7rem, 3vw, 2.55rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.045em;
}

.siren-proof span {
  max-width: 22ch;
  color: var(--ink-3);
  font-size: 0.9rem;
  line-height: 1.45;
}

/* Shared section language -------------------------------------------------- */

.siren-section {
  position: relative;
  padding-block: clamp(5.5rem, 10vw, 8.5rem);
  scroll-margin-top: 4.25rem;
}

.siren-section-head {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(15rem, 0.7fr);
  align-items: end;
  gap: clamp(1.5rem, 5vw, 5rem);
  margin-bottom: clamp(2.8rem, 5vw, 4.5rem);
}

.siren-section-head-single {
  grid-template-columns: minmax(0, 1fr);
}

.siren-page .section-label {
  font-size: 0.82rem;
}

.siren-section-head h2 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2.25rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.07;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.siren-section-head p {
  max-width: 38ch;
  margin: 0;
  color: var(--ink-2);
  font-size: 1.02rem;
}

/* Results ----------------------------------------------------------------- */

.siren-results {
  background:
    radial-gradient(circle at 88% 8%, rgba(197, 60, 86, 0.065), transparent 28rem),
    var(--bg);
}

.siren-result-card {
  padding: clamp(1.15rem, 3vw, 2.25rem);
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 55px rgba(20, 24, 36, 0.075);
}

.siren-chart-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 0.3rem 0.25rem 1.4rem;
  border-bottom: 1px solid var(--line-soft);
}

.siren-chart-kicker {
  margin: 0;
  color: var(--crimson);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.siren-chart-legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.65rem 1rem;
  color: var(--ink-3);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.siren-chart-legend span {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.siren-chart-legend i {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: #9aa1b2;
}

.siren-chart-legend .legend-siren {
  background: var(--crimson);
}

.siren-result-chart-wrap {
  overflow-x: auto;
  scrollbar-width: thin;
}

.siren-result-chart {
  display: block;
  width: 100%;
  min-width: 48rem;
  height: auto;
  overflow: visible;
}

.siren-result-chart text {
  font-family: var(--mono);
}

.siren-result-chart .siren-svg-fallback,
.siren-readout-board .siren-svg-fallback {
  fill: var(--ink-3);
  font-family: var(--sans);
  font-size: 14px;
}

.siren-result-chart .result-grid {
  stroke: var(--line-soft);
  stroke-width: 1;
}

.siren-result-chart .result-tick,
.siren-result-chart .result-axis-label,
.siren-result-chart .result-size {
  fill: var(--ink-3);
  font-size: 10px;
  letter-spacing: 0.04em;
}

.siren-result-chart .result-model {
  fill: var(--ink);
  font-family: var(--display);
  font-size: 18px;
  font-weight: 700;
}

.siren-result-chart .result-link {
  stroke: #c7cbd5;
  stroke-width: 3;
  stroke-linecap: round;
  transition: stroke-dashoffset 700ms cubic-bezier(.2,.7,.2,1);
}

.siren-result-chart .result-arrow {
  fill: none;
  stroke: var(--crimson);
  stroke-width: 1.4;
  opacity: 0.48;
}

.siren-result-chart .result-guard {
  fill: #fff;
  stroke: #8d95a7;
  stroke-width: 2;
}

.siren-result-chart .result-siren {
  fill: var(--crimson);
  stroke: #fff;
  stroke-width: 2;
  filter: drop-shadow(0 2px 4px rgba(197, 60, 86, 0.22));
}

.siren-result-chart .result-value-guard,
.siren-result-chart .result-value-siren {
  font-size: 12px;
  font-weight: 600;
}

.siren-result-chart .result-value-guard {
  fill: #737b8c;
}

.siren-result-chart .result-value-siren,
.siren-result-chart .result-gain {
  fill: var(--crimson);
}

.siren-result-chart .result-gain {
  font-size: 12px;
  font-weight: 600;
}

.siren-result-chart:not(.is-drawn) .result-link {
  stroke-dashoffset: var(--path-length, 100);
}

.siren-result-chart:not(.is-drawn) .result-siren,
.siren-result-chart:not(.is-drawn) .result-value-siren,
.siren-result-chart:not(.is-drawn) .result-gain {
  opacity: 0;
}

.siren-result-story {
  display: grid;
  grid-template-columns: minmax(13rem, 0.58fr) minmax(0, 1.42fr);
  align-items: start;
  gap: clamp(2rem, 6vw, 6rem);
  margin-top: clamp(2.5rem, 5vw, 4rem);
  padding-block: clamp(2rem, 4vw, 3.2rem);
  border-block: 1px solid var(--line-soft);
}

.siren-result-story h3 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.8rem, 3.4vw, 2.65rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.siren-result-story p {
  max-width: 62ch;
  margin: 0;
  color: var(--ink-2);
  font-size: clamp(1rem, 1.35vw, 1.1rem);
  line-height: 1.75;
}

.siren-raw-results {
  margin-top: 2rem;
  border-block: 1px solid var(--line-soft);
}

.siren-raw-results summary {
  padding: 1rem 0;
  cursor: pointer;
  color: var(--ink-2);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.siren-table-scroll {
  overflow-x: auto;
}

.siren-raw-results table {
  width: 100%;
  min-width: 64rem;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

.siren-raw-results th,
.siren-raw-results td {
  padding: 0.62rem 0.65rem;
  border-bottom: 1px solid var(--line-soft);
  text-align: right;
  font-size: 0.75rem;
}

.siren-raw-results thead th:first-child,
.siren-raw-results tbody th:first-child,
.siren-raw-results tbody th:nth-child(2) {
  text-align: left;
}

.siren-raw-results tbody tr.is-siren th:nth-child(2),
.siren-raw-results tbody tr.is-siren td:last-child {
  color: var(--crimson);
  font-weight: 700;
}

.siren-raw-results tbody tr.is-siren:not(:first-child) > * {
  border-top: 1px solid var(--line);
}

/* Method ------------------------------------------------------------------ */

.siren-method {
  color: var(--ink);
  background:
    radial-gradient(circle at 16% 46%, rgba(224, 69, 95, 0.11), transparent 28rem),
    radial-gradient(circle at 86% 25%, rgba(125, 141, 255, 0.1), transparent 30rem),
    #05070d;
}

.siren-section-head-dark p {
  color: var(--ink-2);
}

.siren-readout-demo {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(10, 14, 24, 0.8);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.22);
}

.siren-mode-switch {
  display: inline-flex;
  gap: 0.35rem;
  margin: 1.2rem 1.2rem 0;
  padding: 0.28rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.025);
}

.siren-mode-switch button {
  padding: 0.6rem 0.85rem;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--ink-3);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  transition: color 180ms ease, background 180ms ease;
}

.siren-mode-switch button:hover {
  color: var(--ink);
}

.siren-mode-switch button.is-active {
  background: var(--ink);
  color: #05070d;
}

.siren-readout-board {
  padding: clamp(0.5rem, 2vw, 1.2rem);
}

.siren-readout-board svg {
  display: block;
  width: 100%;
  height: auto;
}

#sirenReadoutSvg text {
  font-family: var(--mono);
}

#sirenReadoutSvg .readout-small {
  fill: var(--ink-3);
  font-size: 10px;
  letter-spacing: 0.12em;
}

#sirenReadoutSvg .readout-main {
  fill: var(--ink);
  font-family: var(--display);
  font-size: 20px;
  font-weight: 700;
}

#sirenReadoutSvg .readout-copy {
  fill: var(--ink-2);
  font-family: var(--sans);
  font-size: 13px;
}

#sirenReadoutSvg .readout-box {
  fill: #0d1220;
  stroke: rgba(255, 255, 255, 0.13);
  stroke-width: 1;
}

#sirenReadoutSvg .readout-layer {
  fill: rgba(169, 177, 199, 0.08);
  stroke: rgba(255, 255, 255, 0.08);
  stroke-width: 1;
}

#sirenReadoutSvg .readout-neuron {
  fill: #242a3b;
  stroke: rgba(255, 255, 255, 0.07);
  stroke-width: 1;
}

#sirenReadoutSvg .readout-neuron.is-safety {
  fill: var(--crimson);
  stroke: #ff9aad;
  filter: drop-shadow(0 0 5px rgba(224, 69, 95, 0.55));
}

#sirenReadoutSvg .readout-wire {
  fill: none;
  stroke: rgba(224, 69, 95, 0.48);
  stroke-width: 1.3;
  stroke-linecap: round;
}

#sirenReadoutSvg .readout-flow {
  fill: none;
  stroke: rgba(169, 177, 199, 0.28);
  stroke-width: 1.4;
}

#sirenReadoutSvg .readout-final {
  fill: rgba(125, 141, 255, 0.1);
  stroke: rgba(125, 141, 255, 0.45);
  stroke-width: 1;
}

#sirenReadoutSvg .readout-score {
  fill: rgba(224, 69, 95, 0.11);
  stroke: rgba(224, 69, 95, 0.52);
  stroke-width: 1;
}

#sirenReadoutSvg .readout-score-text {
  fill: #ff9caf;
  font-family: var(--display);
  font-size: 22px;
  font-weight: 700;
}

#sirenReadoutSvg .readout-token {
  fill: rgba(125, 141, 255, 0.1);
  stroke: rgba(125, 141, 255, 0.38);
  stroke-width: 1;
}

#sirenReadoutSvg .readout-token-text {
  fill: var(--ink);
  font-size: 11px;
}

.siren-readout-caption {
  padding: 1.2rem clamp(1.2rem, 3vw, 2rem) 1.45rem;
  border-top: 1px solid var(--line-soft);
}

.siren-readout-caption p {
  max-width: 58ch;
  margin: 0;
  color: var(--ink-2);
  font-size: 0.9rem;
}

.siren-readout-caption b {
  color: var(--ink);
}

.siren-speed-proof {
  display: grid;
  grid-template-columns: minmax(16rem, 0.58fr) minmax(31rem, 1.42fr);
  margin-top: clamp(2rem, 4vw, 3rem);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(118deg, rgba(224, 69, 95, 0.055), transparent 42%),
    rgba(10, 14, 24, 0.8);
}

.siren-speed-copy {
  padding: clamp(1.6rem, 3.8vw, 2.8rem);
  border-right: 1px solid var(--line-soft);
}

.siren-speed-copy h3 {
  margin: 0.75rem 0 0;
  font-family: var(--display);
  font-size: clamp(1.8rem, 3.5vw, 2.75rem);
  letter-spacing: -0.045em;
  line-height: 1.04;
}

.siren-speed-copy > p:not(.siren-chart-kicker) {
  max-width: 33ch;
  margin: 1rem 0 0;
  color: var(--ink-2);
  font-size: 0.9rem;
  line-height: 1.65;
}

.siren-speed-headline {
  display: flex;
  align-items: flex-end;
  gap: 0.9rem;
  margin-top: 1.65rem;
}

.siren-speed-headline strong {
  color: #ff8298;
  font-family: var(--display);
  font-size: clamp(2.8rem, 5vw, 4.15rem);
  letter-spacing: -0.065em;
  line-height: 0.86;
}

.siren-speed-headline span {
  color: var(--ink-3);
  font-size: 0.72rem;
  line-height: 1.42;
}

.siren-flops-chart {
  min-width: 0;
  padding: clamp(1.45rem, 3vw, 2.25rem);
}

.siren-flops-legend {
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 0.55rem 1.2rem;
  margin-bottom: 0.85rem;
  color: var(--ink-3);
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.025em;
}

.siren-flops-legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.siren-flops-legend i {
  width: 0.62rem;
  height: 0.62rem;
  border-radius: 2px;
  background: var(--crimson);
}

.siren-flops-legend span:last-child i {
  background: var(--indigo);
}

.siren-flops-row {
  display: grid;
  grid-template-columns: 6rem minmax(0, 1fr);
  align-items: center;
  gap: 0.85rem;
  padding: 0.82rem 0;
  border-top: 1px solid var(--line-soft);
}

.siren-flops-model {
  color: var(--ink);
  font-family: var(--display);
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.15;
}

.siren-flops-model small {
  display: block;
  margin-top: 0.18rem;
  color: var(--ink-3);
  font-family: var(--mono);
  font-size: 0.55rem;
  font-weight: 600;
}

.siren-flops-row > div {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr) 3.4rem;
  align-items: center;
  gap: 0.55rem;
}

.siren-flops-row > div + div {
  margin-top: 0.4rem;
}

.siren-flops-row > div > span,
.siren-flops-row > div > strong {
  font-family: var(--mono);
  font-size: 0.58rem;
  font-weight: 600;
}

.siren-flops-row > div > span {
  color: #ff8298;
}

.siren-flops-row > div > strong {
  color: var(--ink-2);
  text-align: right;
}

.siren-flops-row > div > i {
  height: 0.48rem;
  overflow: hidden;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.055);
}

.siren-flops-row > div > i > b {
  display: block;
  width: var(--flops-width);
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #c53c56, #ff758e);
}

.siren-flops-row > div.is-guard > span {
  color: #93a0ff;
}

.siren-flops-row > div.is-guard > i > b {
  background: linear-gradient(90deg, #5868d8, #8794ff);
}

.siren-flops-note {
  margin: 0.9rem 0 0;
  color: var(--ink-3);
  font-family: var(--mono);
  font-size: 0.58rem;
  line-height: 1.55;
}

.siren-method-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: clamp(2.5rem, 5vw, 4rem);
  border-block: 1px solid var(--line-soft);
}

.siren-method-steps article {
  padding: 1.8rem clamp(1rem, 2.8vw, 2.2rem);
  border-left: 1px solid var(--line-soft);
}

.siren-method-steps article:last-child {
  border-right: 1px solid var(--line-soft);
}

.siren-method-steps span {
  color: var(--crimson);
  font-family: var(--mono);
  font-size: 0.65rem;
}

.siren-method-steps h3 {
  margin: 0.65rem 0 0.55rem;
  font-family: var(--display);
  font-size: 1.35rem;
  letter-spacing: -0.025em;
}

.siren-method-steps p {
  max-width: 31ch;
  margin: 0;
  color: var(--ink-3);
  font-size: 0.85rem;
}

/* Generalization and streaming ------------------------------------------- */

.siren-streaming {
  background:
    radial-gradient(circle at 8% 18%, rgba(197, 60, 86, 0.055), transparent 27rem),
    radial-gradient(circle at 92% 78%, rgba(88, 104, 216, 0.065), transparent 31rem),
    var(--bg);
}

.siren-stream-grid {
  display: grid;
  grid-template-columns: minmax(15rem, 0.55fr) minmax(30rem, 1.45fr);
  align-items: stretch;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.siren-stream-proof {
  display: grid;
  min-width: 0;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 18px 55px rgba(20, 24, 36, 0.06);
}

.siren-stream-proof article {
  display: grid;
  align-content: center;
  min-height: 9rem;
  padding: 1.35rem 1.5rem;
}

.siren-stream-proof article + article {
  border-top: 1px solid var(--line-soft);
}

.siren-stream-proof strong,
.siren-stream-proof span {
  display: block;
}

.siren-stream-proof strong {
  margin-bottom: 0.4rem;
  font-family: var(--display);
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.siren-stream-proof span {
  color: var(--ink-3);
  font-size: 0.82rem;
  line-height: 1.48;
}

.siren-stream-demo {
  min-width: 0;
  padding: clamp(1.35rem, 3.5vw, 2.5rem);
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 55px rgba(20, 24, 36, 0.06);
}

.siren-stream-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--line-soft);
}

.siren-stream-head p {
  margin: 0;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.siren-stream-head span {
  padding: 0.2rem 0.42rem;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--ink-3);
  font-family: var(--mono);
  font-size: 0.56rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.siren-stream-text {
  min-height: 11rem;
  padding: clamp(1.6rem, 4vw, 2.6rem) 0;
  font-family: var(--display);
  font-size: clamp(1.35rem, 3.1vw, 2.15rem);
  font-weight: 600;
  line-height: 1.65;
  letter-spacing: -0.025em;
}

.siren-stream-text span {
  display: inline-block;
  margin-right: 0.28em;
  color: var(--ink);
  border-radius: 3px;
  transition: opacity 180ms ease, color 180ms ease, background 180ms ease;
}

.siren-stream-text span.is-future {
  opacity: 0.12;
}

.siren-stream-text span.is-current {
  padding: 0.02em 0.16em 0.08em;
  background: rgba(88, 104, 216, 0.1);
  color: var(--indigo);
}

.siren-stream-text.is-flagged span.is-current {
  background: rgba(197, 60, 86, 0.11);
  color: var(--crimson);
}

.siren-stream-controls {
  padding: 1.15rem 0 1.5rem;
  border-top: 1px solid var(--line-soft);
}

.siren-stream-controls label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.55rem;
  color: var(--ink-3);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.siren-stream-controls output {
  color: var(--ink);
  text-transform: none;
}

.siren-stream-controls input {
  width: 100%;
  accent-color: var(--crimson);
  cursor: pointer;
}

.siren-stream-controls input[hidden] {
  display: none;
}

.siren-score-panel {
  padding: 1rem 1.1rem 1.1rem;
  border: 1px solid var(--line-soft);
  border-radius: 6px;
  background: #f7f7fa;
}

.siren-score-meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.siren-score-meta span {
  color: var(--ink-3);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.siren-score-meta strong {
  font-family: var(--display);
  font-size: 1.75rem;
  line-height: 1;
}

.siren-score-track {
  position: relative;
  height: 0.55rem;
  margin: 0.75rem 0 0.7rem;
  overflow: visible;
  border-radius: 999px;
  background: #dfe2ea;
}

.siren-score-track > b {
  position: absolute;
  inset: 0 auto 0 0;
  width: 62%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--indigo), var(--crimson));
  transition: width 220ms ease;
}

.siren-score-threshold {
  position: absolute;
  z-index: 2;
  left: 50%;
  top: -0.3rem;
  bottom: -0.3rem;
  width: 1px;
  background: rgba(20, 24, 36, 0.38);
}

.siren-score-threshold span {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 0.2rem);
  transform: translateX(-50%);
  color: var(--ink-3);
  font-family: var(--mono);
  font-size: 0.5rem;
  font-style: normal;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.siren-score-panel > p {
  margin: 0;
  color: var(--crimson);
  font-size: 0.78rem;
}

.siren-score-panel.is-safe > p {
  color: var(--indigo);
}

.siren-schematic-note {
  margin: 1rem 0 0;
  color: var(--ink-3);
  font-size: 0.7rem;
  line-height: 1.5;
}

/* Reveal enhancement ------------------------------------------------------ */

[data-reveal] {
  opacity: 1;
  transform: none;
}

.siren-enhanced [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 650ms ease, transform 650ms cubic-bezier(.2,.7,.2,1);
}

.siren-enhanced [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* Responsive -------------------------------------------------------------- */

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

  .siren-hero-copy {
    grid-column: 1;
    grid-row: 1;
    max-width: 48rem;
  }

  .siren-proof-rail {
    grid-column: 1;
    grid-row: 2;
  }

  .siren-hero-art {
    grid-column: 1;
    grid-row: 3;
    min-height: 28rem;
  }

  .siren-section-head,
  .siren-stream-grid {
    grid-template-columns: 1fr;
  }

  .siren-section-head p {
    max-width: 51ch;
  }

  .siren-speed-proof {
    grid-template-columns: 1fr;
  }

  .siren-speed-copy {
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .siren-speed-copy > p:not(.siren-chart-kicker) {
    max-width: 48ch;
  }

  .siren-stream-proof {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .siren-stream-proof article + article {
    border-top: 0;
    border-left: 1px solid var(--line-soft);
  }
}

@media (max-width: 760px) {
  .siren-masthead {
    padding-top: 7.5rem;
  }

  .siren-hero-copy h1 {
    font-size: clamp(4.8rem, 26vw, 7rem);
  }

  .siren-hero-art {
    min-height: 24rem;
  }

  .siren-hero-layers {
    inset: 7rem 1.5rem 6.7rem;
    gap: 0.28rem;
  }

  .siren-hero-layer {
    gap: 0.22rem;
    padding: 0.35rem 0.2rem;
  }

  .siren-proof-rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .siren-proof:nth-child(3),
  .siren-proof:nth-child(4) {
    border-top: 1px solid var(--line);
  }

  .siren-chart-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .siren-chart-legend {
    justify-content: flex-start;
  }

  .siren-result-chart-wrap.is-compact {
    overflow-x: visible;
  }

  .siren-result-chart.is-compact {
    min-width: 0;
  }

  .siren-result-story,
  .siren-method-steps {
    grid-template-columns: 1fr;
  }

  .siren-method-steps article,
  .siren-method-steps article:last-child {
    border-right: 1px solid var(--line-soft);
  }

  .siren-method-steps article + article {
    border-top: 1px solid var(--line-soft);
  }

  .siren-stream-proof {
    grid-template-columns: 1fr;
  }

  .siren-stream-proof article + article {
    border-top: 1px solid var(--line-soft);
    border-left: 0;
  }

  .siren-stream-proof article {
    min-height: 7.5rem;
  }
}

@media (max-width: 480px) {
  .siren-nav-inner {
    min-height: 4rem;
    gap: 0.75rem;
  }

  .siren-nav-links {
    gap: 0.65rem;
  }

  .siren-nav-home,
  .siren-nav-links a {
    font-size: 0.66rem;
  }

  .siren-nav-links a:nth-child(3) {
    display: none;
  }

  .siren-hero-art-top span:last-child {
    display: none;
  }

  .siren-hero-input {
    inset-inline: 1rem;
  }

  .siren-hero-score {
    right: 1rem;
  }

  .siren-proof {
    min-height: 8rem;
    padding: 1.4rem 0.85rem;
  }

  .siren-proof strong {
    font-size: 1.6rem;
  }

  .siren-mode-switch {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: calc(100% - 2rem);
    margin-inline: 1rem;
  }

  .siren-mode-switch button {
    padding-inline: 0.45rem;
  }

  .siren-flops-chart {
    padding-inline: 1rem;
  }

  .siren-flops-legend {
    justify-content: flex-start;
  }

  .siren-flops-row {
    grid-template-columns: 4.7rem minmax(0, 1fr);
    gap: 0.55rem;
  }

  .siren-flops-row > div {
    grid-template-columns: 2.65rem minmax(0, 1fr) 3rem;
    gap: 0.4rem;
  }

  .siren-stream-text {
    min-height: 9rem;
  }
}

/* SPIN-aligned paper structure ------------------------------------------- */

.siren-masthead {
  padding: clamp(6.5rem, 9vw, 7.75rem) 0 clamp(3.25rem, 5vw, 4.5rem);
}

.siren-masthead-grid {
  grid-template-columns: minmax(0, 1.1fr) minmax(22rem, 0.9fr);
  gap: clamp(2.5rem, 5vw, 4.5rem);
}

.siren-hero-copy h1 {
  margin-bottom: 0.85rem;
  font-size: clamp(2.6rem, 4vw, 3.3rem);
  line-height: 1;
  letter-spacing: -0.045em;
}

.siren-hero-claim {
  max-width: 35ch;
  margin-bottom: 1.05rem;
  font-size: clamp(1.3rem, 2vw, 1.7rem);
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: -0.018em;
}

.siren-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 0;
  margin: 0 0 1rem;
  padding: 0;
  color: var(--ink-3);
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 500;
  line-height: 1.6;
  list-style: none;
}

.siren-keywords li + li::before {
  content: "\00b7";
  margin-inline: 0.55rem;
  color: var(--line);
}

.siren-hero-art {
  min-height: clamp(22rem, 32vw, 27rem);
}

.siren-hero-input {
  inset: 3rem 2rem auto;
}

.siren-hero-layers {
  inset: 4.8rem 2.25rem 4.6rem;
}

.siren-hero-layer::after {
  display: none;
}

.siren-hero-score {
  min-width: 8rem;
  padding: 0.72rem 0.78rem;
}

.siren-hero-score > strong {
  margin: 0 0 0.35rem;
  font-size: 1.7rem;
}

.siren-hero-score > i {
  margin-right: 0;
}

.siren-section {
  padding-block: clamp(3.75rem, 6vw, 5.5rem);
}

.siren-section-head {
  margin-bottom: clamp(1.8rem, 3vw, 2.6rem);
}

.siren-section-head h2 {
  font-size: clamp(1.65rem, 2.8vw, 2.3rem);
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: -0.025em;
}

.siren-motivation {
  border-bottom: 1px solid var(--line-soft);
  background: #fff;
}

.siren-motivation .siren-section-head {
  margin-bottom: 1.4rem;
}

.siren-motivation-copy,
.siren-method-intro {
  max-width: 68ch;
  margin: 0;
  color: var(--ink-2);
  font-family: var(--sans);
  font-size: 1.03rem;
  line-height: 1.78;
}

.siren-method-intro {
  margin: -1rem 0 2rem;
}

.siren-method-intro b,
.siren-expansion b {
  color: var(--ink);
  font-weight: 650;
}

.siren-results .siren-proof-rail {
  grid-column: auto;
  grid-row: auto;
  margin: 0 0 clamp(2.5rem, 4vw, 3.6rem);
  border-block: 1px solid var(--line);
}

.siren-chart-head {
  justify-content: flex-end;
}

.siren-result-story {
  display: block;
}

.siren-result-story p {
  max-width: 68ch;
  font-family: var(--sans);
}

.siren-speed-proof {
  margin-top: clamp(2.5rem, 4vw, 3.6rem);
}

.siren-speed-copy h3 {
  margin-top: 0;
  font-size: clamp(1.45rem, 2.4vw, 1.9rem);
}

.siren-method-steps h3 {
  margin-top: 0;
}

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

  .siren-hero-art {
    grid-row: 2;
  }
}

@media (max-width: 760px) {
  .siren-nav-links a:nth-child(1),
  .siren-nav-links a:nth-child(4) {
    display: none;
  }

  .siren-nav-links a:nth-child(3) {
    display: inline;
  }

  .siren-hero-copy h1 {
    font-size: clamp(2.6rem, 14vw, 3.5rem);
  }

  .siren-proof-rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .siren-hero-input i::after,
  .siren-hero-layer span.is-safety {
    animation: none;
  }

  .siren-enhanced [data-reveal],
  .siren-result-chart .result-link,
  .siren-stream-text span,
  .siren-score-track > b {
    transition: none;
  }
}

/* Academic editorial theme ------------------------------------------------
   Preserve every existing module and interaction, but present them as a
   restrained research article: warm paper, quiet rules, and figure panels. */

.siren-page,
.siren-page .light {
  --bg: #ffffff;
  --bg-raise: #ffffff;
  --ink: #202326;
  --ink-2: #50555a;
  --ink-3: #646a6f;
  --crimson: #a64a3e;
  --indigo: #3f6f8f;
  --line: #cbc9c1;
  --line-soft: #dfddd6;
}

.siren-page {
  background: var(--bg);
  color: var(--ink);
  font-size: 16.5px;
}

.siren-page :where(a, button, input, [tabindex]):focus-visible {
  outline: 2px solid var(--indigo);
  outline-offset: 3px;
}

/* Navigation */

.siren-nav {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.96);
  border-color: var(--line-soft);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.siren-nav-inner {
  min-height: 3.75rem;
}

.siren-nav-home,
.siren-nav-links a {
  font-family: var(--sans);
  letter-spacing: 0.025em;
}

.siren-nav-home {
  color: var(--ink-2);
  font-size: 0.82rem;
  font-weight: 600;
}

.siren-nav-home span {
  color: var(--crimson);
}

.siren-nav-links {
  gap: clamp(1rem, 2.5vw, 2rem);
}

.siren-nav-links a {
  color: var(--ink-3);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: none;
}

.siren-nav a:hover {
  color: var(--crimson);
}

/* Paper cover */

.siren-masthead {
  min-height: 0;
  padding: clamp(7.25rem, 11vw, 9rem) 0 0;
  color: var(--ink);
  background: #e8ebec;
  overflow: hidden;
}

.siren-masthead::after {
  background: var(--line);
}

.siren-masthead-grid {
  grid-template-columns: minmax(0, 0.9fr) minmax(25rem, 1.1fr);
  align-items: center;
  gap: clamp(2.5rem, 6vw, 5.5rem);
}

.siren-hero-copy .eyebrow {
  margin-bottom: 1.1rem;
  color: var(--ink-3);
  font-family: var(--sans);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.siren-hero-copy .eyebrow b {
  color: var(--crimson);
}

.siren-hero-copy h1 {
  margin-bottom: 1.15rem;
  color: var(--ink);
  font-size: clamp(4.2rem, 8vw, 6.5rem);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.055em;
}

.siren-hero-claim {
  max-width: 22ch;
  margin-bottom: 0.9rem;
  color: var(--ink);
  font-size: clamp(1.55rem, 2.65vw, 2.1rem);
  font-weight: 650;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.siren-hero-deck {
  max-width: 39rem;
  margin-bottom: 1.2rem;
  color: var(--ink-2);
  font-size: 1rem;
  line-height: 1.65;
}

.siren-hero-deck > b,
.siren-expansion b {
  color: var(--ink);
}

.siren-authors {
  margin-bottom: 1.45rem;
  color: var(--ink-3);
  font-family: var(--sans);
  font-size: 0.8rem;
  line-height: 1.65;
}

.siren-authors b {
  color: var(--ink-2);
}

.siren-hero-links {
  gap: 0.45rem;
}

.siren-hero-links .chip {
  padding: 0.5rem 0.76rem;
  border-color: var(--line);
  border-radius: 2px;
  background: #fff;
  color: var(--ink-2);
  font-family: var(--sans);
  font-size: 0.71rem;
  font-weight: 600;
  letter-spacing: 0;
}

.siren-hero-links .chip:hover {
  border-color: var(--crimson);
  background: #fff;
  color: var(--crimson);
}

.siren-hero-links .siren-chip-primary {
  border-color: var(--crimson);
  background: var(--crimson);
  color: #fff;
}

.siren-hero-links .siren-chip-primary:hover {
  border-color: #873c33;
  background: #873c33;
  color: #fff;
}

.siren-hero-art {
  min-height: clamp(25rem, 38vw, 31rem);
  border-color: var(--line);
  border-radius: 2px;
  background: #fff;
  box-shadow: none;
}

.siren-hero-art::before {
  background-image:
    linear-gradient(rgba(62, 70, 74, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(62, 70, 74, 0.045) 1px, transparent 1px);
  background-size: 2.75rem 2.75rem;
  -webkit-mask-image: none;
  mask-image: none;
}

.siren-hero-art-top,
.siren-hero-input,
.siren-hero-layer::after {
  color: var(--ink-3);
}

.siren-hero-input i {
  background: #dddcd5;
}

.siren-hero-input i::after {
  background: var(--crimson);
  animation: none;
}

.siren-hero-layers {
  transform: none;
}

.siren-hero-layer {
  border-color: #deddd6;
  background: rgba(235, 238, 238, 0.72);
}

.siren-hero-layer span {
  background: #d9dcda;
}

.siren-hero-layer span.is-safety {
  box-shadow: none;
  animation: none;
}

.siren-hero-wire {
  background: var(--crimson);
  opacity: 0.5;
}

.siren-hero-score {
  border-color: #c49b94;
  border-radius: 2px;
  background: #fff9f7;
  color: var(--ink);
  box-shadow: none;
}

.siren-hero-score > span {
  color: var(--ink-3);
}

.siren-hero-score > i {
  background: #dfddd6;
}

.siren-hero-score > i b {
  background: var(--crimson);
}

.siren-hero-score > em {
  color: #883d34;
}

.siren-proof-rail {
  margin-top: clamp(3rem, 6vw, 5rem);
  border-block: 1px solid var(--line);
}

.siren-proof {
  min-height: 7.6rem;
  padding-block: 1.55rem;
  border-color: var(--line);
}

.siren-proof strong {
  margin-bottom: 0.45rem;
  color: var(--ink);
  font-size: clamp(1.65rem, 2.5vw, 2.2rem);
  font-weight: 650;
}

.siren-proof span {
  color: var(--ink-3);
  font-size: 0.82rem;
}

/* Article rhythm */

.siren-section {
  padding-block: clamp(4.75rem, 8vw, 7rem);
}

.siren-page .section-label {
  margin-bottom: 2.1rem;
  color: var(--ink-3);
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.08em;
}

.siren-page .section-label::after {
  background: var(--line-soft);
}

.siren-section-head {
  align-items: start;
  margin-bottom: clamp(2.5rem, 4vw, 3.6rem);
}

.siren-section-head h2 {
  color: var(--ink);
  font-size: clamp(2.1rem, 4.2vw, 3.35rem);
  font-weight: 650;
  line-height: 1.12;
  letter-spacing: -0.035em;
}

.siren-section-head p {
  max-width: 42ch;
  padding-top: 0.25rem;
  color: var(--ink-2);
  font-size: 0.98rem;
  line-height: 1.7;
}

/* Results as a paper figure */

.siren-results {
  background: #fff;
}

.siren-result-card {
  padding: clamp(1rem, 2.5vw, 1.8rem);
  border-color: var(--line);
  border-radius: 2px;
  background: #fff;
  box-shadow: none;
}

.siren-chart-head {
  border-color: var(--line-soft);
}

.siren-chart-kicker {
  color: var(--ink-2);
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 650;
  letter-spacing: 0.065em;
}

.siren-chart-legend {
  color: var(--ink-3);
  font-family: var(--sans);
  font-size: 0.75rem;
}

.siren-chart-legend i {
  background: #9da4a6;
}

.siren-result-chart .result-link {
  stroke: #b7bcbd;
}

.siren-result-chart .result-guard {
  fill: #fff;
  stroke: #858e90;
}

.siren-result-chart .result-siren {
  fill: var(--crimson);
  stroke: #fff;
  filter: none;
}

.siren-result-story {
  border-color: var(--line-soft);
}

.siren-result-story h3 {
  color: var(--ink);
  font-size: clamp(1.65rem, 3vw, 2.3rem);
  font-weight: 650;
}

.siren-result-story p {
  color: var(--ink-2);
  font-size: 1rem;
  line-height: 1.75;
}

.siren-raw-results {
  border-color: var(--line-soft);
}

.siren-raw-results summary {
  color: var(--ink-2);
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.06em;
}

/* Method and compute figure */

.siren-method {
  color: var(--ink);
  background: #f2f3f1;
}

.siren-section-head-dark p {
  color: var(--ink-2);
}

.siren-readout-demo,
.siren-speed-proof {
  border-color: var(--line);
  border-radius: 2px;
  background: #fff;
  box-shadow: none;
}

.siren-mode-switch {
  gap: 0;
  padding: 0;
  border-color: var(--line);
  border-radius: 2px;
  background: #f3f2ed;
}

.siren-mode-switch button {
  border-radius: 0;
  color: var(--ink-3);
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0;
}

.siren-mode-switch button + button {
  border-left: 1px solid var(--line);
}

.siren-mode-switch button:hover {
  color: var(--crimson);
}

.siren-mode-switch button.is-active {
  background: var(--crimson);
  color: #fff;
}

#sirenReadoutSvg .readout-small {
  fill: var(--ink-3);
}

#sirenReadoutSvg .readout-main,
#sirenReadoutSvg .readout-copy,
#sirenReadoutSvg .readout-token-text {
  fill: var(--ink);
}

#sirenReadoutSvg .readout-copy {
  fill: var(--ink-2);
}

#sirenReadoutSvg .readout-box {
  fill: #f8f8f4;
  stroke: #bfc3c1;
}

#sirenReadoutSvg .readout-layer {
  fill: #ecece7;
  stroke: #cdd0cd;
}

#sirenReadoutSvg .readout-neuron {
  fill: #dfe2df;
  stroke: #c5c9c6;
}

#sirenReadoutSvg .readout-neuron.is-safety {
  fill: var(--crimson);
  stroke: #79342c;
  filter: none;
}

#sirenReadoutSvg .readout-wire {
  stroke: rgba(166, 74, 62, 0.52);
}

#sirenReadoutSvg .readout-flow {
  stroke: #aeb5b6;
}

#sirenReadoutSvg .readout-final {
  fill: #eaf0f3;
  stroke: #8ca5b4;
}

#sirenReadoutSvg .readout-score {
  fill: #f5e9e6;
  stroke: #bd8e87;
}

#sirenReadoutSvg .readout-score-text {
  fill: #863c33;
}

#sirenReadoutSvg .readout-token {
  fill: #eaf0f3;
  stroke: #91a9b7;
}

.siren-readout-caption {
  border-color: var(--line-soft);
}

.siren-readout-caption p {
  color: var(--ink-2);
}

.siren-readout-caption b {
  color: var(--ink);
}

.siren-speed-copy {
  border-color: var(--line-soft);
}

.siren-speed-copy h3 {
  color: var(--ink);
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  font-weight: 650;
}

.siren-speed-copy > p:not(.siren-chart-kicker) {
  color: var(--ink-2);
}

.siren-speed-headline strong {
  color: var(--crimson);
  font-size: clamp(2.6rem, 4.5vw, 3.8rem);
}

.siren-speed-headline span {
  color: var(--ink-3);
}

.siren-flops-legend {
  color: var(--ink-3);
  font-family: var(--sans);
}

.siren-flops-row {
  border-color: var(--line-soft);
}

.siren-flops-row > div > span {
  color: #873c33;
}

.siren-flops-row > div.is-guard > span {
  color: #315d78;
}

.siren-flops-row > div > i {
  border-radius: 1px;
  background: #e3e2dc;
}

.siren-flops-row > div > i > b {
  border-radius: 1px;
  background: var(--crimson);
}

.siren-flops-row > div.is-guard > i > b {
  background: var(--indigo);
}

.siren-flops-note {
  font-family: var(--sans);
}

.siren-method-steps {
  border-color: var(--line);
}

.siren-method-steps article,
.siren-method-steps article:last-child {
  border-color: var(--line);
}

.siren-method-steps span {
  color: var(--crimson);
}

.siren-method-steps h3 {
  color: var(--ink);
  font-size: 1.25rem;
  font-weight: 650;
}

.siren-method-steps p {
  color: var(--ink-2);
}

/* Streaming analysis */

.siren-streaming {
  background: #fff;
}

.siren-stream-proof,
.siren-stream-demo {
  border-color: var(--line);
  border-radius: 2px;
  background: #fff;
  box-shadow: none;
}

.siren-stream-proof article + article,
.siren-stream-head,
.siren-stream-controls {
  border-color: var(--line-soft);
}

.siren-stream-proof strong {
  color: var(--ink);
  font-size: clamp(1.55rem, 2.6vw, 2.1rem);
  font-weight: 650;
}

.siren-stream-proof span {
  color: var(--ink-3);
}

.siren-stream-head p,
.siren-stream-controls label,
.siren-score-meta span {
  font-family: var(--sans);
  font-weight: 650;
  letter-spacing: 0.06em;
}

.siren-stream-head span {
  border-color: var(--line);
  border-radius: 1px;
  font-family: var(--sans);
}

.siren-stream-text {
  color: var(--ink);
  font-size: clamp(1.25rem, 2.7vw, 1.9rem);
  font-weight: 600;
}

.siren-stream-text span {
  border-radius: 1px;
}

.siren-stream-text span.is-current {
  background: #e7eff3;
  color: #315d78;
}

.siren-stream-text.is-flagged span.is-current {
  background: #f4e8e5;
  color: #873c33;
}

.siren-score-panel {
  border-color: var(--line-soft);
  border-radius: 2px;
  background: #f3f2ed;
}

.siren-score-track {
  border-radius: 1px;
  background: #d8dad7;
}

.siren-score-track > b {
  border-radius: 1px;
  background: var(--crimson);
}

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

  .siren-hero-copy {
    max-width: 44rem;
  }

  .siren-hero-art {
    min-height: 27rem;
  }

  .siren-speed-copy {
    border-color: var(--line-soft);
  }
}

@media (max-width: 760px) {
  .siren-masthead {
    padding-top: 6.75rem;
  }

  .siren-hero-copy h1 {
    font-size: clamp(3.9rem, 20vw, 5.5rem);
  }

  .siren-proof {
    min-height: 7rem;
  }

  .siren-method-steps article,
  .siren-method-steps article:last-child,
  .siren-stream-proof article + article {
    border-color: var(--line);
  }
}

@media (max-width: 480px) {
  .siren-nav-inner {
    min-height: 3.65rem;
  }

  .siren-hero-art {
    min-height: 21rem;
  }

  .siren-proof strong {
    font-size: 1.5rem;
  }
}

/* Final page-specific alignment with the approved SPIN page. */
.siren-masthead {
  padding: clamp(6.5rem, 9vw, 7.75rem) 0 clamp(3.25rem, 5vw, 4.5rem);
}

.siren-masthead-grid {
  grid-template-columns: minmax(0, 1.1fr) minmax(22rem, 0.9fr);
  gap: clamp(2.5rem, 5vw, 4.5rem);
}

.siren-hero-copy h1 {
  margin-bottom: 0.85rem;
  font-size: clamp(2.6rem, 4vw, 3.3rem);
  line-height: 1;
  letter-spacing: -0.045em;
}

.siren-hero-claim {
  max-width: 35ch;
  margin-bottom: 1.05rem;
  font-size: clamp(1.3rem, 2vw, 1.7rem);
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: -0.018em;
}

.siren-hero-art {
  min-height: clamp(22rem, 32vw, 27rem);
}

.siren-section {
  padding-block: clamp(3.75rem, 6vw, 5.5rem);
}

.siren-section-head {
  margin-bottom: clamp(1.8rem, 3vw, 2.6rem);
}

.siren-section-head h2 {
  font-size: clamp(1.65rem, 2.8vw, 2.3rem);
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: -0.025em;
}

.siren-results .siren-proof-rail {
  grid-column: auto;
  grid-row: auto;
  margin: 0 0 clamp(2.5rem, 4vw, 3.6rem);
  border-block: 1px solid var(--line);
}

.siren-result-story {
  display: block;
}

.siren-result-story p {
  max-width: 68ch;
  font-family: var(--sans);
}

.siren-speed-copy h3 {
  margin-top: 0;
  font-size: clamp(1.45rem, 2.4vw, 1.9rem);
}

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

@media (max-width: 760px) {
  .siren-hero-copy h1 {
    font-size: clamp(2.6rem, 14vw, 3.5rem);
  }

  .siren-proof-rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}