* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--ding-bg);
  color: var(--ding-text);
  font: 17px/1.65 var(--ding-font);
  -webkit-font-smoothing: antialiased;
}
code,
pre,
kbd {
  font-family: var(--ding-mono);
}
a {
  color: var(--ding-brand);
  text-underline-offset: 4px;
}
a:hover {
  text-decoration-thickness: 2px;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
button {
  font: inherit;
  cursor: pointer;
}
[hidden] {
  display: none !important;
}
:focus-visible {
  outline: 2px solid var(--ding-focus);
  outline-offset: 3px;
}
.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 20;
  background: var(--ding-surface);
  padding: 12px;
}
.skip-link:focus {
  top: 12px;
}
h1,
h2,
h3,
p {
  margin-top: 0;
}
h1,
h2,
h3 {
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.04em;
}
h1 {
  font-size: clamp(56px, 6.6vw, 94px);
  margin-bottom: 28px;
}
h1 em {
  font-style: normal;
  color: var(--ding-brand);
}
h2 {
  font-size: clamp(32px, 4vw, 52px);
  margin-bottom: 24px;
}
h3 {
  font-size: 23px;
  letter-spacing: -0.025em;
}
p {
  margin-bottom: 20px;
}
.site-header,
main,
footer {
  width: min(1280px, calc(100% - 96px));
  margin: auto;
}
.site-header {
  display: flex;
  align-items: center;
  gap: 36px;
  min-height: 104px;
  border-bottom: 1px solid var(--ding-border);
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ding-text);
  font-size: 29px;
  font-weight: 700;
  letter-spacing: -0.06em;
  text-decoration: none;
  white-space: nowrap;
}
.wordmark-dot {
  color: var(--ding-brand);
}
.site-header nav {
  display: flex;
  gap: 28px;
  margin-left: auto;
  align-items: center;
}
.site-header nav a {
  text-decoration: none;
  color: var(--ding-muted);
  font-size: 14px;
  font-weight: 600;
}
.site-header nav a[aria-current],
.site-header nav a:hover {
  color: var(--ding-brand);
}
.theme-toggle {
  padding: 8px 11px;
  border: 1px solid var(--ding-border);
  background: transparent;
  border-radius: var(--ding-radius-control);
  color: var(--ding-muted);
  font-size: 12px;
  white-space: nowrap;
  min-height: 40px;
}
.hero {
  display: grid;
  grid-template-columns: 0.93fr 1.07fr;
  gap: 56px;
  padding: 82px 0 64px;
  align-items: center;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.13em;
  font-size: 11px;
  font-weight: 700;
  color: var(--ding-brand);
  margin-bottom: 24px;
}
.signal {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ding-brand);
  margin-right: 7px;
}
.lede {
  font-size: 19px;
  line-height: 1.65;
  color: var(--ding-muted);
  max-width: 590px;
}
.hero .lede {
  max-width: 470px;
}
.actions {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
  margin-top: 30px;
}
.button {
  display: inline-flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  min-height: 49px;
  padding: 12px 19px;
  border-radius: var(--ding-radius-control);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}
.primary {
  background: var(--ding-action);
  color: var(--ding-on-brand);
}
.primary:hover {
  background: var(--ding-action-hover);
}
.text-link {
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}
.availability {
  font-size: 12px;
  color: var(--ding-muted);
  margin: 22px 0 0;
  max-width: 410px;
}
.availability a {
  display: block;
  margin-top: 4px;
}
.hero-product {
  min-width: 0;
  padding-top: 16px;
}
.figure-note {
  font-size: 11px;
  line-height: 1.6;
  color: var(--ding-muted);
  margin: 16px 8px 0;
}
.evidence-window {
  border: 1px solid var(--ding-border);
  border-radius: var(--ding-radius-panel);
  background: var(--ding-surface);
  overflow: hidden;
  transform: rotate(-1deg);
}
.window-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 21px;
  border-bottom: 1px solid var(--ding-border);
  background: var(--ding-subtle);
  gap: 12px;
}
.mini-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  font-weight: 600;
}
.sample-label {
  font: 9px var(--ding-mono);
  letter-spacing: 0.06em;
  color: var(--ding-muted);
}
.window-body {
  padding: 23px;
}
.breadcrumb {
  font-size: 11px;
  color: var(--ding-muted);
  margin-bottom: 27px;
}
.breadcrumb span {
  margin: 0 9px;
}
.watch-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.watch-heading .eyebrow {
  font-size: 9px;
  display: block;
  margin: 0 0 8px;
}
.watch-heading h2 {
  font-size: 24px;
  margin-bottom: 24px;
}
.status {
  border-radius: 5px;
  padding: 5px 9px;
  font-size: 10px;
  font-weight: 600;
  background: var(--ding-brand-soft);
  color: var(--ding-success);
  white-space: nowrap;
}
.status.incident {
  background: var(--ding-incident-soft);
  color: var(--ding-incident);
}
.watch-explanation {
  font-size: 30px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
  white-space: pre-line;
}
.muted {
  color: var(--ding-muted);
  font-size: 12px;
}
.evidence-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--ding-border);
  border-radius: 7px;
  margin: 26px 0 24px;
  overflow: hidden;
}
.evidence-strip > div {
  padding: 13px 10px;
  border-right: 1px solid var(--ding-border);
}
.evidence-strip > div:last-child {
  border: 0;
}
.evidence-strip span {
  display: block;
  font-size: 9px;
  color: var(--ding-muted);
  white-space: nowrap;
}
.evidence-strip strong {
  display: block;
  font-size: 16px;
  margin: 9px 0 4px;
  letter-spacing: -0.03em;
}
.evidence-strip small {
  display: block;
  font-size: 9px;
  color: var(--ding-muted);
}
.history-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.history-title h3 {
  font-size: 12px;
  letter-spacing: 0;
  margin: 0;
}
.history-title > span {
  font: 9px var(--ding-mono);
  color: var(--ding-muted);
}
.observation {
  display: grid;
  grid-template-columns: 1fr 0.5fr 1.4fr;
  padding: 10px 0;
  border-bottom: 1px solid var(--ding-border);
  font: 11px/1.5 var(--ding-mono);
  color: var(--ding-muted);
  gap: 10px;
}
.observation span:last-child {
  text-align: right;
  font-family: var(--ding-font);
}
.observation.selected {
  color: var(--ding-text);
}
.demo-controls {
  display: flex;
  gap: 7px;
  align-items: center;
  margin-top: 20px;
  font-size: 10px;
}
.demo-controls > span {
  margin-right: auto;
  color: var(--ding-muted);
}
.demo-controls button {
  border: 1px solid var(--ding-border);
  border-radius: 4px;
  padding: 7px 9px;
  background: transparent;
  color: var(--ding-muted);
  font-size: 10px;
  min-height: 34px;
}
.demo-controls button[aria-pressed="true"] {
  background: var(--ding-brand-soft);
  color: var(--ding-brand);
  border-color: var(--ding-brand);
}
.principles {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 23px 0;
  border-block: 1px solid var(--ding-border);
  color: var(--ding-muted);
  font-size: 12px;
}
.principles span:before {
  content: "↳";
  color: var(--ding-brand);
  margin-right: 10px;
}
.section {
  padding: 98px 0;
  border-bottom: 1px solid var(--ding-border);
}
.section-heading {
  max-width: 650px;
  margin-bottom: 44px;
}
.section-heading p:last-child {
  color: var(--ding-muted);
  max-width: 470px;
}
.flow {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 0;
  margin: 0;
  gap: 28px;
}
.flow .step {
  display: block;
  color: var(--ding-brand);
  font: 12px var(--ding-mono);
  border-top: 2px solid var(--ding-border);
  padding-top: 20px;
  margin-bottom: 25px;
}
.flow h3 {
  margin-bottom: 14px;
}
.flow p {
  font-size: 15px;
  color: var(--ding-muted);
}
.mono {
  font: 10px/1.6 var(--ding-mono);
  color: var(--ding-brand);
}
.use-row {
  display: grid;
  grid-template-columns: 50px 1fr 74px 20px;
  gap: 20px;
  align-items: center;
  padding: 30px 0;
  border-top: 1px solid var(--ding-border);
  text-decoration: none;
  color: var(--ding-text);
}
.use-row h3 {
  margin-bottom: 9px;
}
.use-row p {
  margin: 0;
  font-size: 14px;
  color: var(--ding-muted);
}
.use-row:hover h3 {
  color: var(--ding-brand);
}
.use-number {
  font: 12px var(--ding-mono);
  color: var(--ding-muted);
}
.tag {
  display: inline-block;
  color: var(--ding-brand);
  background: var(--ding-brand-soft);
  font: 11px/1.5 var(--ding-mono);
  padding: 5px 9px;
  border-radius: 4px;
  white-space: nowrap;
  width: fit-content;
}
.definition {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 90px;
  align-items: center;
}
.definition p {
  color: var(--ding-muted);
  font-size: 16px;
}
.code-panel {
  min-width: 0;
  border: 1px solid var(--ding-border);
  border-radius: var(--ding-radius);
  background: var(--ding-surface);
  overflow: hidden;
}
.code-title {
  font: 12px/1.6 var(--ding-mono);
  padding: 17px 23px;
  border-bottom: 1px solid var(--ding-border);
}
.code-title span {
  display: block;
  font: 10px/1.5 var(--ding-font);
  color: var(--ding-muted);
  margin-top: 4px;
}
pre {
  font: 12px/1.8 var(--ding-mono);
  margin: 0;
  padding: 23px;
  overflow: auto;
  color: var(--ding-text);
}
.code-panel > a {
  display: block;
  border-top: 1px solid var(--ding-border);
  padding: 14px 23px;
  font-size: 12px;
}
.operation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 90px;
}
.operation > .eyebrow {
  grid-column: 1/-1;
}
.operation > div p:not(.lede) {
  font-size: 15px;
  color: var(--ding-muted);
}
.closing {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 70px;
  padding: 80px 0;
}
.closing h2 {
  margin: 0;
}
.closing p {
  color: var(--ding-muted);
  font-size: 13px;
  margin: 18px 0 0;
  max-width: 460px;
}
footer {
  border-top: 1px solid var(--ding-border);
  display: flex;
  align-items: center;
  gap: 35px;
  padding: 30px 0 42px;
  font-size: 12px;
}
footer .wordmark {
  font-size: 23px;
}
footer p {
  margin: 0;
  color: var(--ding-muted);
}
footer > div {
  margin-left: auto;
  display: flex;
  gap: 22px;
}
footer a {
  text-decoration: none;
}
.page-hero {
  padding: 80px 0 45px;
  max-width: 900px;
}
.page-hero h1 {
  font-size: clamp(52px, 6vw, 80px);
}
.page-hero .lede {
  max-width: 680px;
}
.notice {
  border-left: 3px solid var(--ding-brand);
  padding: 10px 20px;
  background: var(--ding-brand-soft);
  font-size: 14px;
  max-width: 750px;
}
.console-showcase {
  max-width: 780px;
  margin: 30px auto 80px;
}
.console-showcase .evidence-window {
  transform: none;
}
.console-showcase .window-body {
  padding: 34px;
}
.console-showcase .evidence-strip strong {
  font-size: 22px;
}
.console-showcase .evidence-strip span,
.console-showcase .evidence-strip small {
  font-size: 12px;
}
.three {
  grid-template-columns: repeat(3, 1fr);
}
.plain-panel {
  border-left: 1px solid var(--ding-border);
  padding-left: 38px;
}
.screen-list {
  display: grid;
  grid-template-columns: 105px 1fr;
  gap: 12px;
  font-size: 14px;
}
.screen-list dt {
  font-weight: 600;
}
.screen-list dd {
  margin: 0;
  color: var(--ding-muted);
}
.featured-example {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: center;
  padding: 55px 0 70px;
}
.featured-example h2 {
  margin: 24px 0;
}
.featured-example p {
  font-size: 16px;
  color: var(--ding-muted);
}
.example-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 60px;
}
.example-grid article {
  padding: 35px 0;
  border-top: 1px solid var(--ding-border);
}
.example-grid h3 {
  margin: 18px 0 14px;
}
.example-grid p {
  color: var(--ding-muted);
  font-size: 16px;
  max-width: 430px;
}
.example-grid a {
  font-size: 14px;
  font-weight: 600;
}
.fixture-data {
  display: flex;
  justify-content: space-between;
  gap: 4px;
  padding: 15px 23px;
  border-top: 1px solid var(--ding-border);
  font: 12px var(--ding-mono);
  color: var(--ding-muted);
}
@media (min-width: 1500px) {
  .hero {
    gap: 80px;
  }
}
@media (max-width: 1100px) {
  .site-header,
  main,
  footer {
    width: calc(100% - 56px);
  }
  .site-header {
    gap: 20px;
  }
  .site-header nav {
    gap: 17px;
  }
  .hero {
    gap: 30px;
  }
  .hero h1 {
    font-size: 68px;
  }
  .hero .lede {
    font-size: 17px;
  }
  .window-body {
    padding: 18px;
  }
  .evidence-strip > div {
    padding: 12px 7px;
  }
  .definition,
  .operation {
    gap: 45px;
  }
  .evidence-strip strong {
    font-size: 14px;
  }
  .evidence-strip small {
    font-size: 8px;
  }
  .hero .actions {
    gap: 15px;
  }
  .flow {
    gap: 20px;
  }
  .mono {
    font-size: 9px;
  }
}
@media (max-width: 850px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 58px;
    gap: 34px;
  }
  .hero h1 {
    font-size: 80px;
  }
  .hero-copy {
    max-width: 620px;
  }
  .hero h1 br:first-of-type {
    display: none;
  }
  .hero-product {
    max-width: 650px;
    width: 100%;
    margin: auto;
  }
  .evidence-strip > div {
    padding: 17px;
  }
  .evidence-strip span,
  .evidence-strip small {
    font-size: 11px;
  }
  .evidence-strip strong {
    font-size: 21px;
  }
  .site-header {
    flex-wrap: wrap;
    padding: 20px 0;
    gap: 16px;
  }
  .site-header nav {
    order: 3;
    flex-basis: 100%;
    justify-content: space-between;
  }
  .theme-toggle {
    margin-left: auto;
  }
  .principles {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  .flow {
    grid-template-columns: 1fr 1fr;
    gap: 35px;
  }
  .definition,
  .operation,
  .featured-example {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .section {
    padding: 65px 0;
  }
  .use-row {
    grid-template-columns: 28px 1fr 20px;
    gap: 15px;
  }
  .use-row .tag {
    display: none;
  }
  .closing {
    gap: 28px;
  }
  .closing h2 {
    font-size: 34px;
  }
  footer {
    flex-wrap: wrap;
    gap: 20px;
  }
  footer > div {
    margin-left: 0;
    width: 100%;
    justify-content: space-between;
  }
  .page-hero {
    padding-top: 56px;
  }
  .console-showcase {
    margin-bottom: 40px;
  }
  .three {
    grid-template-columns: 1fr;
  }
  .plain-panel {
    border-left: 0;
    border-top: 1px solid var(--ding-border);
    padding: 30px 0 0;
  }
}
@media (max-width: 520px) {
  .site-header,
  main,
  footer {
    width: calc(100% - 36px);
  }
  .site-header nav {
    gap: 10px;
  }
  .site-header nav a {
    font-size: 12px;
  }
  .hero {
    padding-top: 42px;
  }
  .hero h1 {
    font-size: 61px;
  }
  .hero h1 br:first-of-type {
    display: initial;
  }
  .hero .lede {
    font-size: 17px;
  }
  .actions {
    align-items: flex-start;
    flex-direction: column;
  }
  .evidence-window {
    transform: none;
  }
  .window-top {
    padding: 13px;
  }
  .window-body {
    padding: 16px;
  }
  .watch-explanation {
    font-size: 26px;
  }
  .watch-heading h2 {
    font-size: 22px;
  }
  .status {
    font-size: 9px;
  }
  .evidence-strip {
    grid-template-columns: 1fr 1fr;
  }
  .evidence-strip > div {
    padding: 13px;
    border-bottom: 1px solid var(--ding-border);
  }
  .evidence-strip > div:nth-child(2) {
    border-right: 0;
  }
  .evidence-strip > div:nth-child(3) {
    border-bottom: 0;
  }
  .evidence-strip strong {
    font-size: 20px;
  }
  .evidence-strip span,
  .evidence-strip small {
    font-size: 10px;
  }
  .figure-note {
    font-size: 11px;
  }
  .principles {
    font-size: 11px;
    gap: 15px 10px;
  }
  .principles span:before {
    margin-right: 6px;
  }
  .flow {
    grid-template-columns: 1fr;
  }
  .flow .step {
    margin-bottom: 18px;
  }
  .flow p {
    font-size: 16px;
  }
  .mono {
    font-size: 11px;
  }
  .use-row h3 {
    font-size: 20px;
  }
  .use-row {
    padding: 25px 0;
  }
  .use-number {
    align-self: start;
    margin-top: 5px;
  }
  .closing {
    flex-direction: column;
    align-items: flex-start;
    padding: 58px 0;
    gap: 28px;
  }
  .closing p {
    font-size: 13px;
  }
  .example-grid {
    grid-template-columns: 1fr;
  }
  .page-hero h1 {
    font-size: 52px;
  }
  .console-showcase .window-body {
    padding: 16px;
  }
  .console-showcase .evidence-strip span,
  .console-showcase .evidence-strip small {
    font-size: 10px;
  }
  .sample-label {
    font-size: 8px;
  }
  .mini-brand {
    font-size: 12px;
  }
  pre {
    font-size: 11px;
    padding: 17px;
  }
  .featured-example {
    padding-top: 20px;
  }
  .screen-list {
    grid-template-columns: 90px 1fr;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

/* Bell restoration draft: the original green, with warm neutral foundations. */
.wordmark img,
.mini-brand img {
  background: var(--ding-logo-surface);
  border-radius: 5px;
  padding: 2px;
}
.hero h1 em {
  color: var(--ding-on-brand);
  background: var(--ding-green);
  padding: 0 0.09em 0.04em;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}
.hero-product {
  background: var(--ding-violet-soft);
  border-radius: 16px;
  padding: 20px;
}
.evidence-window {
  transform: none;
  box-shadow: none;
}
.figure-note {
  color: var(--ding-text);
  margin-bottom: 0;
}
.signal {
  background: var(--ding-green);
  border: 1px solid var(--ding-brand);
  width: 9px;
  height: 9px;
}
.flow .step {
  color: var(--ding-violet);
}
.code-panel {
  border-top: 3px solid var(--ding-green);
}