:root {
  --ink: #102d31;
  --ink-soft: #486266;
  --paper: #f3f1e9;
  --paper-deep: #e7e4d9;
  --night: #071b20;
  --night-2: #0c272c;
  --line: rgba(16, 45, 49, 0.16);
  --line-dark: rgba(255, 255, 255, 0.14);
  --teal: #0d8f87;
  --teal-bright: #53d6c5;
  --orange: #e56f3d;
  --yellow: #edb949;
  --purple: #8f70d8;
  --blue: #4e8fdb;
  --danger: #d95850;
  --shadow: 0 22px 55px rgba(7, 27, 32, 0.12);
  --radius-lg: 24px;
  --radius-md: 16px;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
}

code {
  font-family: var(--mono);
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 8px;
  color: white;
  background: var(--orange);
  transform: translateY(-150%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: 760px;
  padding: 0 clamp(24px, 6vw, 96px) 46px;
  color: #f7f5ee;
  background:
    radial-gradient(circle at 77% 30%, rgba(83, 214, 197, 0.17), transparent 29%),
    radial-gradient(circle at 10% 88%, rgba(229, 111, 61, 0.15), transparent 24%),
    var(--night);
}

.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  pointer-events: none;
  opacity: 0.34;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.055) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: linear-gradient(to bottom, black 0%, transparent 86%);
}

.topbar {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 82px;
  border-bottom: 1px solid var(--line-dark);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  width: max-content;
  color: #f7f5ee;
  font-size: 0.89rem;
  font-weight: 720;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.brand-mark {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  width: 29px;
  height: 24px;
}

.brand-mark i {
  display: block;
  width: 4px;
  border-radius: 4px;
  background: var(--teal-bright);
}

.brand-mark i:nth-child(1) { height: 8px; }
.brand-mark i:nth-child(2) { height: 19px; }
.brand-mark i:nth-child(3) { height: 13px; }
.brand-mark i:nth-child(4) { height: 24px; background: var(--orange); }

.topbar-links {
  display: flex;
  gap: 30px;
}

.topbar-links a {
  color: rgba(247, 245, 238, 0.68);
  font-size: 0.82rem;
  font-weight: 650;
  text-decoration: none;
  transition: color 150ms ease;
}

.topbar-links a:hover,
.topbar-links a:focus-visible {
  color: #fff;
}

.status-pill {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  color: rgba(247, 245, 238, 0.7);
  font: 0.7rem/1 var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.status-pill span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--yellow);
  box-shadow: 0 0 0 4px rgba(237, 185, 73, 0.12);
}

.status-pill.passed span {
  background: var(--teal-bright);
  box-shadow: 0 0 0 4px rgba(83, 214, 197, 0.12);
}

.status-pill.failed span {
  background: var(--danger);
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(420px, 0.95fr);
  gap: clamp(50px, 8vw, 140px);
  align-items: center;
  max-width: 1480px;
  min-height: 540px;
  margin: 0 auto;
  padding: 76px 0 54px;
}

.eyebrow,
.panel-kicker,
.plot-kicker,
.method-tag {
  margin: 0 0 14px;
  color: var(--teal-bright);
  font: 700 0.69rem/1.2 var(--mono);
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.eyebrow.dark,
.panel-kicker,
.plot-kicker {
  color: var(--teal);
}

.hero h1 {
  max-width: 840px;
  margin: 0;
  font-size: clamp(3rem, 5.4vw, 5.7rem);
  font-weight: 610;
  letter-spacing: -0.065em;
  line-height: 0.99;
}

.hero-lede {
  max-width: 690px;
  margin: 28px 0 0;
  color: rgba(247, 245, 238, 0.72);
  font-size: clamp(1rem, 1.35vw, 1.22rem);
  line-height: 1.75;
}

.hero-lede code {
  color: #fff;
  font-size: 0.92em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  font-size: 0.84rem;
  font-weight: 720;
  text-decoration: none;
  transition: transform 150ms ease, background 150ms ease, border-color 150ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  border-color: var(--teal-bright);
  color: var(--night);
  background: var(--teal-bright);
}

.button-ghost {
  color: #fff;
  background: rgba(255, 255, 255, 0.035);
}

.hero-equation {
  position: relative;
  padding: clamp(28px, 4vw, 48px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.045);
  box-shadow: 0 35px 90px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(12px);
}

.hero-equation::before,
.hero-equation::after {
  position: absolute;
  content: "";
  border-radius: 50%;
}

.hero-equation::before {
  top: -7px;
  right: 42px;
  width: 14px;
  height: 14px;
  background: var(--orange);
  box-shadow: -33px 0 0 var(--yellow), -66px 0 0 var(--teal-bright);
}

.equation-kicker {
  margin-bottom: 36px;
  color: rgba(247, 245, 238, 0.42);
  font: 700 0.66rem/1 var(--mono);
  letter-spacing: 0.12em;
}

.equation-main {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px;
  color: #fff;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.6rem, 2.4vw, 2.55rem);
  white-space: nowrap;
}

.equation-main b {
  margin: 0 8px;
  color: rgba(255, 255, 255, 0.45);
  font-weight: 400;
}

.equation-main sub,
.equation-main sup {
  color: var(--teal-bright);
  font-size: 0.48em;
}

.equation-main .sum {
  margin-left: 3px;
  color: var(--orange);
  font-size: 1.35em;
}

.equation-main .sinc {
  margin-left: 8px;
  color: var(--yellow);
  font-style: italic;
}

.equation-legend {
  display: grid;
  gap: 11px;
  margin-top: 38px;
  padding-top: 25px;
  border-top: 1px solid var(--line-dark);
  color: rgba(247, 245, 238, 0.63);
  font-size: 0.75rem;
}

.equation-legend span {
  display: flex;
  align-items: center;
  gap: 10px;
}

.equation-legend i {
  display: inline-block;
  width: 18px;
  height: 3px;
  border-radius: 10px;
}

.legend-path { background: var(--orange); }
.legend-grid { background: var(--teal-bright); }
.legend-band { background: var(--yellow); }

.hero-stats {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  max-width: 1480px;
  margin: 0 auto;
  border-top: 1px solid var(--line-dark);
}

.hero-stats div {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 23px 22px 0;
  border-left: 1px solid var(--line-dark);
}

.hero-stats div:last-child {
  border-right: 1px solid var(--line-dark);
}

.hero-stats strong {
  color: #fff;
  font: 500 1.12rem/1.2 var(--mono);
}

.hero-stats span {
  color: rgba(247, 245, 238, 0.43);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

main {
  overflow: hidden;
}

.section-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.65fr);
  gap: 80px;
  align-items: end;
  max-width: 1480px;
  margin: 0 auto;
  padding: 110px clamp(24px, 5vw, 72px) 50px;
}

.section-intro h2,
.method-heading h2,
.code-copy h2 {
  margin: 0;
  font-size: clamp(2.25rem, 4vw, 4.4rem);
  font-weight: 590;
  letter-spacing: -0.055em;
  line-height: 1.04;
}

.section-intro > p {
  max-width: 560px;
  margin: 0 0 5px;
  color: var(--ink-soft);
  font-size: 1.03rem;
  line-height: 1.75;
}

.lab-shell {
  display: grid;
  grid-template-columns: 330px minmax(0, 1fr);
  gap: 18px;
  max-width: 1580px;
  margin: 0 auto;
  padding: 0 clamp(14px, 3vw, 44px) 120px;
}

.control-panel,
.plot-card,
.inspection-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fbfaf5;
  box-shadow: var(--shadow);
}

.control-panel {
  position: sticky;
  top: 14px;
  align-self: start;
  max-height: calc(100vh - 28px);
  overflow-y: auto;
  padding: 24px 20px 22px;
  scrollbar-width: thin;
  scrollbar-color: rgba(16, 45, 49, 0.22) transparent;
}

.control-heading,
.path-section-heading,
.control-label-row,
.plot-heading,
.selected-tap-title,
.code-titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.control-heading h3,
.path-section-heading h3,
.plot-heading h3,
.inspection-card h3,
.resolution-demo h3 {
  margin: 0;
  font-size: 1.16rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

.control-heading .panel-kicker,
.path-section-heading .panel-kicker {
  margin-bottom: 5px;
}

.icon-button {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--ink-soft);
  background: transparent;
  cursor: pointer;
  transition: transform 150ms ease, background 150ms ease;
}

.icon-button:hover {
  transform: rotate(-20deg);
  background: var(--paper);
}

.global-control {
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.control-label-row label {
  font-size: 0.82rem;
  font-weight: 720;
}

.control-label-row label em {
  color: var(--teal);
  font-family: Georgia, serif;
  font-size: 1.05em;
}

.control-label-row output {
  color: var(--ink);
  font: 700 0.76rem/1 var(--mono);
}

input[type="range"] {
  width: 100%;
  height: 4px;
  margin: 18px 0 8px;
  border: 0;
  border-radius: 5px;
  outline: none;
  appearance: none;
  background: linear-gradient(90deg, var(--teal) var(--range-progress, 20%), rgba(16, 45, 49, 0.14) var(--range-progress, 20%));
}

input[type="range"]::-webkit-slider-thumb {
  width: 17px;
  height: 17px;
  border: 3px solid #fbfaf5;
  border-radius: 50%;
  appearance: none;
  background: var(--teal);
  box-shadow: 0 0 0 1px var(--teal), 0 3px 8px rgba(13, 143, 135, 0.25);
  cursor: grab;
}

input[type="range"]::-moz-range-thumb {
  width: 13px;
  height: 13px;
  border: 3px solid #fbfaf5;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 1px var(--teal), 0 3px 8px rgba(13, 143, 135, 0.25);
  cursor: grab;
}

input[type="range"]:focus-visible::-webkit-slider-thumb {
  box-shadow: 0 0 0 4px rgba(13, 143, 135, 0.2);
}

.range-ends {
  display: flex;
  justify-content: space-between;
  color: rgba(16, 45, 49, 0.46);
  font: 0.63rem/1 var(--mono);
}

.preset-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 14px;
}

.preset-row button {
  min-height: 36px;
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink-soft);
  background: transparent;
  font: 650 0.62rem/1 var(--mono);
  cursor: pointer;
}

.preset-row button.active,
.preset-row button:hover {
  border-color: rgba(13, 143, 135, 0.45);
  color: var(--teal);
  background: rgba(13, 143, 135, 0.07);
}

.time-row {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 11px;
  align-items: center;
}

.time-row input {
  margin-top: 17px;
}

.play-button {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  margin-top: 8px;
  border: 0;
  border-radius: 50%;
  color: white;
  background: var(--ink);
  cursor: pointer;
}

.play-icon {
  width: 0;
  height: 0;
  margin-left: 2px;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 8px solid white;
}

.play-button.playing .play-icon {
  width: 8px;
  height: 10px;
  margin: 0;
  border: 0;
  border-right: 3px solid white;
  border-left: 3px solid white;
}

.control-help {
  margin: 8px 0 0 45px;
  color: rgba(16, 45, 49, 0.48);
  font-size: 0.68rem;
  line-height: 1.45;
}

.toggle-row {
  display: grid;
  grid-template-columns: 1fr 38px;
  gap: 12px;
  align-items: center;
  margin-top: 22px;
  padding: 16px;
  border-radius: 12px;
  background: var(--paper);
  cursor: pointer;
}

.toggle-row span {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.toggle-row strong {
  font-size: 0.76rem;
}

.toggle-row small {
  color: var(--ink-soft);
  font-size: 0.63rem;
  line-height: 1.35;
}

.toggle-row input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.toggle-row i {
  position: relative;
  width: 38px;
  height: 22px;
  border-radius: 30px;
  background: rgba(16, 45, 49, 0.2);
  transition: background 150ms ease;
}

.toggle-row i::after {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  content: "";
  border-radius: 50%;
  background: white;
  box-shadow: 0 2px 4px rgba(7, 27, 32, 0.2);
  transition: transform 150ms ease;
}

.toggle-row input:checked + i {
  background: var(--teal);
}

.toggle-row input:checked + i::after {
  transform: translateX(16px);
}

.toggle-row input:focus-visible + i {
  box-shadow: 0 0 0 4px rgba(13, 143, 135, 0.2);
}

.path-section-heading {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.path-section-heading > span {
  padding: 5px 8px;
  border-radius: 6px;
  color: var(--ink-soft);
  background: var(--paper);
  font: 650 0.61rem/1 var(--mono);
}

.path-list {
  display: grid;
  gap: 10px;
  margin-top: 15px;
}

.path-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: #fff;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

.path-card.selected {
  border-color: var(--path-color);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--path-color) 16%, transparent);
}

.path-card-header {
  display: flex;
  align-items: center;
  gap: 9px;
  width: 100%;
  padding: 12px 12px 10px;
}

.path-select-button {
  display: flex;
  flex: 1;
  align-items: center;
  gap: 9px;
  min-width: 0;
  padding: 0;
  border: 0;
  color: var(--ink);
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.path-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--path-color);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--path-color) 14%, transparent);
}

.path-select-button strong {
  font: 750 0.75rem/1 var(--mono);
}

.path-select-button small {
  margin-left: auto;
  color: var(--ink-soft);
  font-size: 0.64rem;
}

.remove-path {
  width: 34px;
  height: 34px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  color: rgba(16, 45, 49, 0.42);
  background: transparent;
  cursor: pointer;
}

.remove-path:hover:not(:disabled) {
  color: white;
  background: var(--danger);
}

.remove-path:disabled {
  opacity: 0.25;
  cursor: not-allowed;
}

.path-card-controls {
  display: grid;
  gap: 9px;
  padding: 0 12px 12px;
}

.mini-control {
  display: grid;
  grid-template-columns: 60px 1fr 54px;
  gap: 7px;
  align-items: center;
}

.mini-control label {
  color: var(--ink-soft);
  font-size: 0.62rem;
}

.mini-control input {
  height: 3px;
  margin: 0;
}

.mini-control output {
  color: var(--ink);
  font: 650 0.59rem/1 var(--mono);
  text-align: right;
}

.path-card input[type="range"] {
  background: linear-gradient(90deg, var(--path-color) var(--range-progress, 20%), rgba(16, 45, 49, 0.12) var(--range-progress, 20%));
}

.path-card input[type="range"]::-webkit-slider-thumb {
  width: 13px;
  height: 13px;
  border-width: 2px;
  background: var(--path-color);
  box-shadow: 0 0 0 1px var(--path-color);
}

.path-card input[type="range"]::-moz-range-thumb {
  width: 9px;
  height: 9px;
  border-width: 2px;
  background: var(--path-color);
  box-shadow: 0 0 0 1px var(--path-color);
}

.add-path-button {
  width: 100%;
  min-height: 44px;
  margin-top: 12px;
  padding: 10px;
  border: 1px dashed rgba(16, 45, 49, 0.28);
  border-radius: 11px;
  color: var(--teal);
  background: transparent;
  font-size: 0.69rem;
  font-weight: 750;
  cursor: pointer;
}

.add-path-button:hover:not(:disabled) {
  border-color: var(--teal);
  background: rgba(13, 143, 135, 0.05);
}

.add-path-button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.workspace {
  display: grid;
  min-width: 0;
  gap: 18px;
}

.pipeline-strip {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--paper-deep);
}

.pipeline-strip > i {
  color: rgba(16, 45, 49, 0.32);
  font-style: normal;
}

.pipeline-step {
  display: flex;
  align-items: center;
  gap: 12px;
}

.pipeline-step > span {
  display: grid;
  place-items: center;
  width: 31px;
  height: 31px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--ink-soft);
  font: 700 0.61rem/1 var(--mono);
}

.pipeline-step.active > span {
  border-color: var(--teal);
  color: white;
  background: var(--teal);
}

.pipeline-step div {
  display: flex;
  flex-direction: column;
}

.pipeline-step strong {
  font: 700 0.73rem/1.3 var(--mono);
}

.pipeline-step small {
  color: var(--ink-soft);
  font-size: 0.63rem;
}

.plot-card {
  overflow: hidden;
  min-width: 0;
  padding: clamp(18px, 3vw, 30px);
}

.plot-heading {
  align-items: flex-start;
  margin-bottom: 13px;
}

.plot-heading.compact {
  margin-bottom: 18px;
}

.plot-heading .plot-kicker {
  margin-bottom: 6px;
}

.plot-heading p:not(.plot-kicker) {
  max-width: 630px;
  margin: 6px 0 0;
  color: var(--ink-soft);
  font-size: 0.75rem;
}

.plot-metric,
.tap-metrics div {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: max-content;
  text-align: right;
}

.plot-metric span,
.tap-metrics span {
  color: var(--ink-soft);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.plot-metric strong,
.tap-metrics strong {
  font: 700 0.79rem/1.2 var(--mono);
}

.tap-metrics {
  display: flex;
  gap: 25px;
}

.plot {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.plot .grid-line {
  stroke: rgba(16, 45, 49, 0.09);
  stroke-width: 1;
}

.plot .axis-line {
  stroke: rgba(16, 45, 49, 0.32);
  stroke-width: 1.2;
}

.plot .zero-line {
  stroke: rgba(16, 45, 49, 0.42);
  stroke-width: 1.2;
}

.plot .axis-label,
.plot .tick-label,
.plot .annotation {
  fill: rgba(16, 45, 49, 0.56);
  font-family: var(--mono);
}

.plot .axis-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.plot .tick-label {
  font-size: 10px;
}

.plot .annotation {
  font-size: 10px;
  font-weight: 700;
}

.cir-stem {
  stroke-width: 3;
  stroke-linecap: round;
}

.cir-point {
  stroke: white;
  stroke-width: 3;
  cursor: grab;
  filter: drop-shadow(0 4px 5px rgba(7, 27, 32, 0.2));
}

.cir-point.selected {
  stroke-width: 5;
}

[data-draggable-path] {
  touch-action: none;
}

.cir-hit-target {
  cursor: grab;
}

.phase-arrow {
  stroke: white;
  stroke-width: 2;
  stroke-linecap: round;
  pointer-events: none;
}

.path-label {
  font: 800 11px/1 var(--mono);
  pointer-events: none;
}

.kernel-card {
  background: #f8f6ef;
}

.path-selector {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.path-selector button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 36px;
  padding: 6px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-soft);
  background: transparent;
  font: 700 0.61rem/1 var(--mono);
  cursor: pointer;
}

.path-selector button::before {
  width: 7px;
  height: 7px;
  content: "";
  border-radius: 50%;
  background: var(--path-color);
}

.path-selector button.active {
  border-color: var(--path-color);
  color: var(--ink);
  background: color-mix(in srgb, var(--path-color) 10%, white);
}

.formula-ribbon {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
  padding: 12px 15px;
  border-radius: 10px;
  color: #f8f7f2;
  background: var(--ink);
}

.formula-ribbon > span {
  display: grid;
  place-items: center;
  width: 31px;
  height: 31px;
  border-radius: 50%;
  color: var(--ink);
  background: var(--selected-path-color, var(--orange));
  font: 800 0.67rem/1 var(--mono);
}

.formula-ribbon code {
  font-size: clamp(0.75rem, 1.2vw, 0.92rem);
}

.formula-ribbon strong {
  color: rgba(247, 245, 238, 0.58);
  font: 600 0.65rem/1 var(--mono);
}

.kernel-line {
  fill: none;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.kernel-area-positive {
  opacity: 0.1;
}

.kernel-sample {
  stroke: white;
  stroke-width: 2;
  cursor: pointer;
}

.kernel-sample.selected {
  stroke: var(--ink);
  stroke-width: 3;
}

.tap-bar {
  fill: var(--teal);
  opacity: 0.78;
  cursor: pointer;
  transition: opacity 100ms ease;
}

.tap-bar:hover,
.tap-bar.selected {
  fill: var(--orange);
  opacity: 1;
}

.tap-stem {
  stroke: var(--teal);
  stroke-width: 2;
  cursor: pointer;
}

.tap-stem.selected {
  stroke: var(--orange);
  stroke-width: 4;
}

.tap-head {
  fill: var(--teal);
  stroke: white;
  stroke-width: 2;
  cursor: pointer;
}

.tap-head.selected {
  fill: var(--orange);
  stroke: var(--ink);
}

.inspection-card {
  display: grid;
  grid-template-columns: minmax(300px, 0.72fr) minmax(420px, 1.28fr);
  overflow: hidden;
}

.inspection-summary {
  padding: 27px;
  color: #f7f5ee;
  background: var(--ink);
}

.inspection-summary .plot-kicker {
  color: var(--teal-bright);
}

.selected-tap-title {
  align-items: baseline;
  margin-top: 8px;
}

.selected-tap-title h3 {
  font-size: 1.45rem;
}

.selected-tap-title span {
  color: rgba(247, 245, 238, 0.5);
  font: 0.68rem/1 var(--mono);
}

.complex-readout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 17px;
  margin-top: 27px;
}

.complex-readout div {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding-top: 11px;
  border-top: 1px solid rgba(255, 255, 255, 0.13);
}

.complex-readout div:last-child {
  grid-column: 1 / -1;
}

.complex-readout span {
  color: rgba(247, 245, 238, 0.46);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.complex-readout strong {
  color: #fff;
  font: 700 0.88rem/1.3 var(--mono);
}

.contribution-panel {
  padding: 24px 27px;
}

.contribution-header,
.contribution-row {
  display: grid;
  grid-template-columns: minmax(100px, 0.7fr) minmax(92px, 0.6fr) minmax(220px, 1.4fr);
  gap: 14px;
  align-items: center;
}

.contribution-header {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  color: rgba(16, 45, 49, 0.45);
  font: 650 0.59rem/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.contribution-row {
  position: relative;
  min-height: 46px;
  border-bottom: 1px solid rgba(16, 45, 49, 0.08);
  font-size: 0.72rem;
}

.contribution-path {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 750;
}

.contribution-path i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--path-color);
}

.weight-value,
.complex-value {
  position: relative;
  z-index: 1;
  font-family: var(--mono);
  font-size: 0.65rem;
}

.weight-value.negative {
  color: var(--danger);
}

.contribution-vector {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 27px;
  padding-left: 8px;
  overflow: hidden;
  border-radius: 5px;
  background: rgba(16, 45, 49, 0.05);
}

.contribution-vector::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--bar-width);
  content: "";
  opacity: 0.18;
  background: var(--path-color);
}

.sum-rule {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 10px;
  align-items: center;
  margin-top: 12px;
  color: var(--ink-soft);
}

.sum-rule span {
  height: 1px;
  background: var(--line);
}

.sum-rule strong {
  color: var(--orange);
  font: 500 1.4rem/1 Georgia, serif;
}

.sum-rule em {
  font-size: 0.64rem;
}

.method-section {
  padding: 125px clamp(24px, 6vw, 96px);
  color: #f7f5ee;
  background:
    radial-gradient(circle at 84% 65%, rgba(83, 214, 197, 0.11), transparent 30%),
    var(--night);
}

.method-heading,
.method-grid,
.resolution-demo {
  max-width: 1380px;
  margin-right: auto;
  margin-left: auto;
}

.method-heading .eyebrow {
  color: var(--teal-bright);
}

.method-heading h2 {
  max-width: 950px;
}

.method-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 65px;
}

.method-card {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 4vw, 50px);
  border: 1px solid var(--line-dark);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.035);
}

.method-number {
  position: absolute;
  top: 18px;
  right: 25px;
  color: rgba(255, 255, 255, 0.045);
  font: 700 clamp(4rem, 8vw, 7rem)/1 var(--mono);
}

.method-tag {
  color: var(--teal-bright);
}

.reverse-card .method-tag {
  color: var(--orange);
}

.method-card h3 {
  position: relative;
  margin: 0;
  font-size: clamp(1.45rem, 2.2vw, 2.2rem);
  font-weight: 620;
  letter-spacing: -0.035em;
}

.method-card ol {
  display: grid;
  gap: 0;
  margin: 35px 0 30px;
  padding: 0;
  list-style: none;
  counter-reset: method;
}

.method-card li {
  display: grid;
  grid-template-columns: 31px 1fr;
  column-gap: 13px;
  padding: 16px 0;
  border-top: 1px solid var(--line-dark);
  counter-increment: method;
}

.method-card li::before {
  grid-row: 1 / 3;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--line-dark);
  border-radius: 50%;
  content: counter(method);
  color: rgba(247, 245, 238, 0.5);
  font: 650 0.61rem/1 var(--mono);
}

.method-card li span {
  font-size: 0.88rem;
  font-weight: 700;
}

.method-card li small {
  color: rgba(247, 245, 238, 0.5);
  font-size: 0.72rem;
}

.method-verdict {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 15px;
  border-radius: 10px;
  font-size: 0.72rem;
}

.method-verdict i {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 23px;
  height: 23px;
  border-radius: 50%;
  font-style: normal;
  font-weight: 800;
}

.method-verdict.success {
  color: #b7eee6;
  background: rgba(83, 214, 197, 0.1);
}

.method-verdict.success i {
  color: var(--night);
  background: var(--teal-bright);
}

.method-verdict.warning {
  color: #ffd4c2;
  background: rgba(229, 111, 61, 0.11);
}

.method-verdict.warning i {
  color: var(--night);
  background: var(--orange);
}

.resolution-demo {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(430px, 1.28fr);
  gap: 80px;
  align-items: center;
  margin-top: 18px;
  padding: 45px 50px;
  border: 1px solid var(--line-dark);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.035);
}

.resolution-demo .panel-kicker {
  color: var(--yellow);
}

.resolution-demo p:not(.panel-kicker) {
  max-width: 470px;
  margin: 12px 0 0;
  color: rgba(247, 245, 238, 0.52);
  font-size: 0.78rem;
}

.resolution-scale {
  display: grid;
  gap: 17px;
}

.resolution-scale div {
  display: grid;
  grid-template-columns: minmax(100px, 1fr) 83px 115px;
  gap: 14px;
  align-items: center;
}

.resolution-scale span {
  display: block;
  width: var(--width);
  height: 8px;
  border-radius: 10px;
  background: linear-gradient(90deg, var(--teal-bright), var(--orange));
}

.resolution-scale strong {
  font: 700 0.68rem/1 var(--mono);
}

.resolution-scale em {
  color: rgba(247, 245, 238, 0.48);
  font: 0.65rem/1 var(--mono);
  text-align: right;
}

.notation-section {
  padding: 125px clamp(24px, 6vw, 96px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 88% 12%, rgba(78, 143, 219, 0.09), transparent 24%),
    var(--paper);
  scroll-margin-top: 24px;
}

.notation-heading,
.notation-equation,
.tap-definition,
.notation-grid,
.notation-scope,
.notation-details-row {
  max-width: 1380px;
  margin-right: auto;
  margin-left: auto;
}

.notation-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 0.65fr);
  gap: clamp(40px, 8vw, 120px);
  align-items: end;
}

.notation-heading > p {
  max-width: 570px;
  margin: 0 0 5px;
  color: var(--ink-soft);
  font-size: 0.86rem;
  line-height: 1.75;
}

.notation-equation {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.13em;
  margin-top: 14px;
  padding: clamp(28px, 4vw, 48px) 24px;
  overflow-x: auto;
  border-radius: 20px;
  color: #f7f5ee;
  background:
    linear-gradient(110deg, rgba(83, 214, 197, 0.08), rgba(229, 111, 61, 0.08)),
    var(--night);
  font: 500 clamp(1.5rem, 3.5vw, 3.2rem)/1.2 Georgia, serif;
  white-space: nowrap;
}

.notation-equation b {
  margin: 0 0.2em;
  color: var(--teal-bright);
  font-weight: 400;
}

.notation-equation .bounded-sum {
  display: inline-grid;
  grid-template-areas:
    "symbol upper"
    "symbol lower";
  grid-template-columns: auto auto;
  grid-template-rows: 1fr 1fr;
  align-self: center;
  align-items: center;
  margin: 0 0.1em;
  line-height: 0.8;
}

.notation-equation .bounded-sum > span {
  grid-area: symbol;
  font-size: 1.35em;
}

.notation-equation .bounded-sum > sup {
  grid-area: upper;
}

.notation-equation .bounded-sum > sub {
  grid-area: lower;
}

.notation-equation .sinc {
  margin-left: 0.18em;
  color: var(--orange);
  font-size: 0.65em;
  font-style: normal;
}

.notation-equation sub,
.notation-equation sup {
  color: rgba(247, 245, 238, 0.72);
  font-size: 0.42em;
}

.tap-definition {
  display: grid;
  grid-template-columns: minmax(190px, 0.32fr) minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  margin-top: 14px;
  padding: 24px 27px;
  border: 1px solid rgba(13, 143, 135, 0.32);
  border-radius: 15px;
  background: rgba(13, 143, 135, 0.075);
}

.tap-definition > strong {
  color: var(--teal);
  font: 750 0.68rem/1.4 var(--mono);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.tap-definition p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.78rem;
  line-height: 1.65;
}

.tap-definition code {
  padding: 9px 11px;
  border-radius: 7px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.55);
  font-size: 0.68rem;
  white-space: nowrap;
}

.notation-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 14px;
  margin-bottom: 0;
}

.symbol-card {
  min-width: 0;
  margin: 0;
  padding: 25px 26px 27px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.5);
}

.symbol-card.featured-symbol {
  border-color: rgba(13, 143, 135, 0.36);
  background: rgba(13, 143, 135, 0.075);
  box-shadow: inset 0 3px 0 var(--teal);
}

.symbol-card dt {
  min-height: 35px;
  margin-bottom: 13px;
  color: var(--teal);
  font: 650 1.25rem/1.2 Georgia, serif;
}

.symbol-card dd {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.76rem;
  line-height: 1.66;
}

.symbol-card dd strong {
  color: var(--ink);
  font-weight: 720;
}

.symbol-card dd span {
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.92em;
}

.notation-scope {
  display: grid;
  grid-template-columns: minmax(210px, 0.36fr) minmax(0, 1fr);
  gap: 34px;
  align-items: center;
  margin-top: 42px;
  padding: 29px 32px;
  border: 1px solid rgba(229, 111, 61, 0.32);
  border-radius: 16px;
  background: rgba(229, 111, 61, 0.07);
}

.notation-scope > strong {
  color: var(--orange);
  font: 750 0.7rem/1.4 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.notation-scope p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.78rem;
  line-height: 1.7;
}

.notation-scope code {
  color: var(--orange);
}

.notation-details-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 14px;
}

.notation-details,
.derived-products {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.42);
}

.notation-details summary,
.derived-products summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 21px 24px;
  color: var(--ink);
  font-size: 0.77rem;
  font-weight: 730;
  cursor: pointer;
  list-style: none;
}

.notation-details summary::-webkit-details-marker,
.derived-products summary::-webkit-details-marker {
  display: none;
}

.notation-details summary span,
.derived-products summary span {
  color: var(--teal);
  font: 400 1.1rem/1 var(--mono);
  transition: transform 160ms ease;
}

.notation-details[open] summary span,
.derived-products[open] summary span {
  transform: rotate(45deg);
}

.notation-details-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  padding: 0 24px 24px;
}

.notation-details-body > div {
  padding: 17px 17px 4px 0;
  border-top: 1px solid var(--line);
}

.notation-details-body > div:nth-child(even) {
  padding-right: 0;
  padding-left: 17px;
}

.notation-details-body h3 {
  margin: 0 0 7px;
  color: var(--teal);
  font: 720 0.64rem/1.3 var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.notation-details-body p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.7rem;
  line-height: 1.65;
}

.notation-details-body code {
  overflow-wrap: anywhere;
  color: var(--ink);
}

.slam-data-section {
  padding: 125px clamp(24px, 6vw, 96px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 12% 26%, rgba(13, 143, 135, 0.1), transparent 25%),
    var(--paper-deep);
  scroll-margin-top: 24px;
}

.slam-data-heading,
.experiment-facts,
.inventory-legend,
.slam-data-grid,
.estimator-boundary,
.derived-products,
.artifact-note {
  max-width: 1380px;
  margin-right: auto;
  margin-left: auto;
}

.slam-data-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.62fr);
  gap: clamp(40px, 8vw, 120px);
  align-items: end;
}

.slam-data-heading h2 {
  max-width: 760px;
}

.slam-data-heading > p {
  max-width: 560px;
  margin: 0 0 5px;
  color: var(--ink-soft);
  font-size: 0.84rem;
  line-height: 1.75;
}

.experiment-facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 55px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.48);
}

.experiment-facts div {
  display: flex;
  min-height: 92px;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  padding: 20px 24px;
}

.experiment-facts div + div {
  border-left: 1px solid var(--line);
}

.experiment-facts span {
  color: var(--ink-soft);
  font: 650 0.59rem/1.2 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.experiment-facts strong {
  color: var(--ink);
  font-size: clamp(0.9rem, 1.35vw, 1.18rem);
  font-weight: 720;
  letter-spacing: -0.025em;
}

.experiment-facts .fact-alert {
  color: #f7f5ee;
  background: var(--night);
}

.experiment-facts .fact-alert span {
  color: rgba(247, 245, 238, 0.55);
}

.experiment-facts .fact-alert strong {
  color: var(--orange);
}

.inventory-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.status-badge,
.data-stage em {
  display: inline-flex;
  align-items: center;
  width: max-content;
  max-width: 100%;
  padding: 6px 8px;
  border-radius: 6px;
  font: 720 0.57rem/1.3 var(--mono);
  font-style: normal;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.status-input {
  color: #376ca9;
  background: rgba(78, 143, 219, 0.12);
}

.status-direct {
  color: #08766f;
  background: rgba(13, 143, 135, 0.12);
}

.status-derived {
  color: #7353b9;
  background: rgba(143, 112, 216, 0.13);
}

.status-simulated {
  color: #a84722;
  background: rgba(229, 111, 61, 0.14);
}

.status-none {
  color: #aa3d37;
  background: rgba(217, 88, 80, 0.12);
}

.slam-data-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.slam-data-card {
  --data-accent: var(--teal);
  position: relative;
  padding: clamp(28px, 3.2vw, 42px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.62);
}

.slam-data-card::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 4px;
  content: "";
  background: var(--data-accent);
}

.input-data-card {
  --data-accent: var(--blue);
}

.direct-data-card,
.coefficient-data-card {
  --data-accent: var(--teal);
}

.derived-data-card {
  --data-accent: var(--purple);
}

.truth-data-card {
  --data-accent: var(--purple);
}

.measurement-data-card {
  --data-accent: var(--orange);
  color: #f7f5ee;
  border-color: var(--night);
  background: var(--night);
}

.missing-data-card {
  --data-accent: var(--danger);
  border-color: rgba(217, 88, 80, 0.25);
  background: rgba(217, 88, 80, 0.055);
}

.data-stage {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 31px;
}

.data-stage > span {
  display: grid;
  place-items: center;
  width: 29px;
  height: 29px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--data-accent);
  font: 750 0.59rem/1 var(--mono);
}

.measurement-data-card .data-stage > span {
  color: var(--orange);
  border-color: var(--line-dark);
}

.measurement-data-card .data-stage em {
  color: #ffb08e;
  background: rgba(229, 111, 61, 0.15);
}

.slam-data-card h3 {
  max-width: 550px;
  margin: 0;
  font-size: clamp(1.35rem, 2vw, 1.9rem);
  font-weight: 680;
  letter-spacing: -0.035em;
  line-height: 1.12;
}

.slam-data-card > p {
  margin: 16px 0 26px;
  color: var(--ink-soft);
  font-size: 0.79rem;
  line-height: 1.68;
}

.measurement-data-card > p {
  color: rgba(247, 245, 238, 0.55);
}

.slam-data-card ul {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.slam-data-card li {
  position: relative;
  padding: 12px 0 12px 20px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.73rem;
  line-height: 1.55;
}

.slam-data-card li::before {
  position: absolute;
  top: 18px;
  left: 1px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  content: "";
  background: var(--data-accent);
}

.measurement-data-card li {
  color: rgba(247, 245, 238, 0.65);
  border-color: var(--line-dark);
}

.slam-data-card li code {
  color: var(--teal);
  font-size: 0.66rem;
  overflow-wrap: anywhere;
}

.measurement-data-card li code {
  color: var(--teal-bright);
}

.estimator-boundary {
  display: grid;
  grid-template-columns: minmax(230px, 0.66fr) minmax(360px, 1fr) auto;
  gap: clamp(25px, 4vw, 65px);
  align-items: center;
  margin-top: 18px;
  padding: 32px 36px;
  border: 1px dashed rgba(13, 143, 135, 0.38);
  border-radius: 18px;
  background: rgba(13, 143, 135, 0.065);
}

.estimator-boundary .panel-kicker {
  color: var(--teal);
}

.estimator-boundary h3 {
  margin: 4px 0 0;
  font-size: 1.15rem;
  letter-spacing: -0.025em;
}

.estimator-boundary > p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.74rem;
  line-height: 1.7;
}

.estimator-actions {
  display: grid;
  gap: 8px;
}

.estimator-actions > a {
  display: inline-flex;
  gap: 9px;
  align-items: center;
  min-width: max-content;
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  font-size: 0.68rem;
  font-weight: 750;
  text-decoration: none;
}

.estimator-actions > a:hover,
.estimator-actions > a:focus-visible {
  color: var(--teal);
  border-color: rgba(13, 143, 135, 0.4);
}

.derived-products {
  margin-top: 18px;
  background: rgba(255, 255, 255, 0.52);
}

.derived-products > div {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  padding: 0 25px 25px;
}

.derived-products p {
  margin: 0;
  padding: 20px 24px 4px 0;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.72rem;
  line-height: 1.7;
}

.derived-products p + p {
  padding-right: 0;
  padding-left: 24px;
  border-left: 1px solid var(--line);
}

.derived-products strong {
  color: var(--ink);
}

.artifact-note {
  margin-top: 18px;
  margin-bottom: 0;
  color: var(--ink-soft);
  font: 0.65rem/1.65 var(--mono);
}

.code-boundary {
  padding: 15px 17px;
  border-left: 3px solid var(--orange);
  color: var(--ink-soft);
  background: rgba(229, 111, 61, 0.07);
  font-size: 0.74rem;
}

.code-boundary strong {
  color: var(--orange);
}

.code-section {
  display: grid;
  grid-template-columns: minmax(300px, 0.75fr) minmax(550px, 1.25fr);
  gap: clamp(50px, 8vw, 120px);
  align-items: center;
  max-width: 1430px;
  margin: 0 auto;
  padding: 130px clamp(24px, 6vw, 76px);
}

.code-copy > p:not(.eyebrow) {
  max-width: 520px;
  margin: 25px 0 0;
  color: var(--ink-soft);
  line-height: 1.75;
}

.code-copy p code {
  padding: 2px 4px;
  color: var(--teal);
  background: rgba(13, 143, 135, 0.07);
}

.code-copy a {
  color: var(--teal);
  text-underline-offset: 3px;
}

.shape-list {
  display: grid;
  gap: 10px;
  margin-top: 32px;
}

.shape-list div {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.shape-list span {
  color: var(--ink-soft);
  font-size: 0.64rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.shape-list code {
  color: var(--ink);
  font-size: 0.7rem;
}

.code-window {
  overflow: hidden;
  border: 1px solid rgba(7, 27, 32, 0.2);
  border-radius: 18px;
  background: var(--night);
  box-shadow: 0 30px 80px rgba(7, 27, 32, 0.2);
}

.code-titlebar {
  min-height: 47px;
  padding: 0 15px;
  border-bottom: 1px solid var(--line-dark);
  color: rgba(247, 245, 238, 0.5);
  font: 0.63rem/1 var(--mono);
}

.code-titlebar > div {
  display: flex;
  gap: 6px;
}

.code-titlebar i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.22);
}

.code-titlebar i:nth-child(1) { background: var(--orange); }
.code-titlebar i:nth-child(2) { background: var(--yellow); }
.code-titlebar i:nth-child(3) { background: var(--teal-bright); }

.code-titlebar button {
  padding: 5px 9px;
  border: 1px solid var(--line-dark);
  border-radius: 5px;
  color: rgba(247, 245, 238, 0.62);
  background: transparent;
  font: inherit;
  cursor: pointer;
}

.code-titlebar button:hover {
  color: #fff;
}

.code-window pre {
  margin: 0;
  padding: clamp(24px, 4vw, 40px);
  overflow-x: auto;
  color: #e5e8df;
  font: 0.78rem/1.75 var(--mono);
  tab-size: 4;
}

.code-window .code-comment {
  color: #6c9494;
}

.takeaway-section {
  max-width: 1430px;
  margin: 0 auto;
  padding: 30px clamp(24px, 6vw, 76px) 130px;
}

.takeaway-section blockquote {
  margin: 20px 0 32px;
  padding: 0;
  border: 0;
  font-size: clamp(1.7rem, 3.4vw, 3.7rem);
  font-weight: 560;
  letter-spacing: -0.045em;
  line-height: 1.2;
}

.takeaway-section blockquote em {
  color: var(--teal);
  font-style: normal;
}

.takeaway-section a {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 750;
  text-decoration: none;
}

.takeaway-section a span {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  color: white;
  background: var(--teal);
}

footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 25px clamp(24px, 6vw, 96px);
  color: rgba(247, 245, 238, 0.48);
  background: var(--night);
  font: 0.64rem/1.4 var(--mono);
}

footer a {
  color: var(--teal-bright);
  text-decoration: none;
}

.scroll-cue {
  display: none;
}

#kernelPlot,
#tapsPlot {
  cursor: crosshair;
  touch-action: pan-y;
}

.tooltip {
  position: fixed;
  z-index: 90;
  max-width: 260px;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 8px;
  color: #f7f5ee;
  background: rgba(7, 27, 32, 0.96);
  box-shadow: 0 10px 30px rgba(7, 27, 32, 0.25);
  font: 0.68rem/1.55 var(--mono);
  pointer-events: none;
}

.tooltip strong {
  color: var(--teal-bright);
}

@media (max-width: 1120px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 55px;
  }

  .hero-equation {
    max-width: 760px;
  }

  .lab-shell {
    grid-template-columns: 280px minmax(0, 1fr);
  }

  .inspection-card {
    grid-template-columns: 1fr;
  }

  .code-section {
    grid-template-columns: 1fr;
  }

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

  .notation-details-row {
    grid-template-columns: 1fr;
  }

  .estimator-boundary {
    grid-template-columns: 1fr 1fr;
  }

  .estimator-actions {
    grid-column: 1 / -1;
    width: max-content;
  }

  .code-copy {
    max-width: 760px;
  }
}

@media (max-width: 860px) {
  .hero {
    min-height: auto;
  }

  .topbar {
    grid-template-columns: 1fr auto;
  }

  .topbar-links {
    display: none;
  }

  .hero-grid {
    padding-top: 58px;
  }

  .hero-stats {
    grid-template-columns: 1fr 1fr;
  }

  .hero-stats div:nth-child(3) {
    border-top: 1px solid var(--line-dark);
  }

  .hero-stats div:nth-child(4) {
    border-top: 1px solid var(--line-dark);
    border-right: 1px solid var(--line-dark);
  }

  .section-intro {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .lab-shell {
    grid-template-columns: 1fr;
  }

  .control-panel {
    position: static;
    max-height: none;
  }

  .path-list {
    grid-template-columns: 1fr 1fr;
  }

  .pipeline-step small {
    display: none;
  }

  .method-grid,
  .resolution-demo {
    grid-template-columns: 1fr;
  }

  .notation-heading,
  .notation-grid,
  .notation-scope,
  .tap-definition,
  .slam-data-heading,
  .slam-data-grid,
  .estimator-boundary {
    grid-template-columns: 1fr;
  }

  .estimator-actions {
    grid-column: auto;
  }

  .notation-scope {
    gap: 12px;
  }

  .tap-definition {
    gap: 10px;
  }

  .derived-products > div {
    grid-template-columns: 1fr;
  }

  .derived-products p + p {
    padding-left: 0;
    border-left: 0;
  }

  .experiment-facts {
    grid-template-columns: 1fr 1fr;
  }

  .experiment-facts div:nth-child(3) {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .experiment-facts div:nth-child(4) {
    border-top: 1px solid var(--line);
  }

  .resolution-demo {
    gap: 35px;
  }
}

@media (max-width: 620px) {
  .hero {
    padding-right: 18px;
    padding-left: 18px;
  }

  .topbar {
    min-height: 68px;
  }

  .status-pill {
    padding: 7px;
    font-size: 0;
  }

  .hero h1 {
    font-size: clamp(2.55rem, 13vw, 4rem);
  }

  .hero-lede {
    font-size: 0.95rem;
  }

  .hero-equation {
    padding: 25px 19px;
  }

  .equation-main {
    font-size: 1.35rem;
  }

  .hero-stats strong {
    font-size: 0.9rem;
  }

  .hero-stats span {
    font-size: 0.58rem;
  }

  .path-list {
    grid-template-columns: 1fr;
  }

  .preset-row button,
  .path-selector button {
    min-height: 40px;
  }

  input[type="range"]::-webkit-slider-thumb {
    width: 23px;
    height: 23px;
  }

  input[type="range"]::-moz-range-thumb {
    width: 19px;
    height: 19px;
  }

  .pipeline-strip {
    grid-template-columns: 1fr;
    gap: 9px;
  }

  .pipeline-strip > i {
    display: none;
  }

  .pipeline-step {
    padding: 5px 0;
  }

  .plot-heading {
    flex-direction: column;
  }

  .plot .axis-label {
    font-size: 17px;
  }

  .plot .tick-label {
    font-size: 15px;
  }

  .plot .annotation,
  .plot .path-label {
    font-size: 15px;
  }

  .plot .grid-line,
  .plot .axis-line {
    stroke-width: 1.5;
  }

  .plot-metric,
  .tap-metrics div {
    text-align: left;
  }

  .tap-metrics {
    width: 100%;
    justify-content: space-between;
  }

  .path-selector {
    justify-content: flex-start;
  }

  .formula-ribbon {
    grid-template-columns: auto 1fr;
  }

  .formula-ribbon strong {
    grid-column: 1 / -1;
  }

  .contribution-panel {
    overflow-x: auto;
  }

  .scroll-cue {
    display: flex;
    gap: 8px;
    align-items: center;
    width: max-content;
    margin: 0 0 12px;
    color: var(--teal);
    font: 700 0.65rem/1.3 var(--mono);
  }

  .contribution-header,
  .contribution-row {
    min-width: 600px;
  }

  .method-section,
  .notation-section,
  .slam-data-section,
  .code-section {
    padding-right: 18px;
    padding-left: 18px;
  }

  .notation-section,
  .slam-data-section {
    padding-top: 95px;
    padding-bottom: 95px;
  }

  .notation-equation {
    justify-content: flex-start;
    padding: 26px 20px;
    font-size: 1.45rem;
  }

  .symbol-card {
    padding: 23px 21px;
  }

  .symbol-card dd,
  .notation-scope p,
  .tap-definition p,
  .slam-data-card > p {
    font-size: 0.84rem;
  }

  .notation-details-body p,
  .slam-data-card li,
  .estimator-boundary > p,
  .derived-products p {
    font-size: 0.82rem;
  }

  .notation-details summary {
    font-size: 0.82rem;
  }

  .status-badge,
  .data-stage em,
  .experiment-facts span {
    font-size: 0.68rem;
  }

  .notation-scope {
    padding: 24px 21px;
  }

  .tap-definition {
    padding: 22px 20px;
  }

  .tap-definition code {
    width: max-content;
    max-width: 100%;
    white-space: normal;
  }

  .notation-details-body {
    grid-template-columns: 1fr;
  }

  .notation-details-body > div,
  .notation-details-body > div:nth-child(even) {
    padding-right: 0;
    padding-left: 0;
  }

  .experiment-facts {
    grid-template-columns: 1fr;
  }

  .experiment-facts div + div,
  .experiment-facts div:nth-child(3) {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .slam-data-card {
    min-height: auto;
    padding: 28px 22px;
  }

  .data-stage {
    align-items: flex-start;
  }

  .data-stage > span {
    flex: 0 0 29px;
  }

  .inventory-legend {
    gap: 6px;
  }

  .artifact-note {
    font-size: 0.73rem;
  }

  .estimator-boundary {
    padding: 25px 20px;
  }

  .estimator-actions > a {
    min-width: 0;
  }

  .derived-products > div {
    padding: 0 20px 22px;
  }

  .resolution-demo {
    padding: 28px 20px;
  }

  .resolution-scale div {
    grid-template-columns: minmax(60px, 1fr) 70px 90px;
    gap: 8px;
  }

  .code-window pre {
    font-size: 0.67rem;
  }

  footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}