:root {
  --ink: #101b1d;
  --ink-soft: #1b2a2c;
  --paper: #e9eadf;
  --paper-dim: #c8ccc0;
  --signal: #c8f135;
  --warning: #ff7849;
  --line: rgba(233, 234, 223, 0.16);
  --line-dark: rgba(16, 27, 29, 0.22);
  --display: "DIN Alternate", "Avenir Next Condensed", "PingFang SC", sans-serif;
  --body: "Avenir Next", "Source Han Sans SC", "PingFang SC", sans-serif;
  --mono: "SFMono-Regular", "Roboto Mono", "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--body);
  -webkit-font-smoothing: antialiased;
}

button,
input,
textarea {
  font: inherit;
}

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

code {
  font-family: var(--mono);
  font-size: 0.9em;
}

.grid-field {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(233, 234, 223, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(233, 234, 223, 0.035) 1px, transparent 1px),
    radial-gradient(circle at 74% 9%, rgba(200, 241, 53, 0.11), transparent 24%);
  background-size: 42px 42px, 42px 42px, 100% 100%;
  mask-image: linear-gradient(to bottom, black, transparent 72%);
  pointer-events: none;
}

.masthead,
main,
footer {
  width: min(1440px, calc(100% - 64px));
  margin-inline: auto;
}

.masthead {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 104px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  width: max-content;
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border: 1px solid var(--signal);
  color: var(--signal);
  font: 800 16px/1 var(--display);
  letter-spacing: 0.08em;
  transform: rotate(-3deg);
}

.brand-copy {
  font: 700 11px/1.15 var(--mono);
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.privacy-chip {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--paper-dim);
  font: 600 12px/1 var(--mono);
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 0 rgba(200, 241, 53, 0.5);
  animation: pulse 2.2s infinite;
}

.edition {
  justify-self: end;
  color: rgba(233, 234, 223, 0.48);
  font: 600 10px/1 var(--mono);
  letter-spacing: 0.08em;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: 0.18fr 1.1fr 0.72fr;
  gap: clamp(24px, 5vw, 84px);
  align-items: end;
  padding: 92px 0 74px;
}

.hero-index {
  align-self: start;
  color: var(--warning);
  font: 700 12px/1 var(--mono);
  writing-mode: vertical-rl;
  letter-spacing: 0.18em;
}

.eyebrow,
.section-heading p {
  margin: 0 0 12px;
  color: var(--signal);
  font: 700 11px/1 var(--mono);
  letter-spacing: 0.18em;
}

h1 {
  max-width: 890px;
  margin: 0;
  font: 700 clamp(48px, 6.5vw, 102px)/0.91 var(--display);
  letter-spacing: -0.055em;
}

h1 em {
  color: transparent;
  font-style: normal;
  -webkit-text-stroke: 1px var(--signal);
}

.lede {
  max-width: 680px;
  margin: 30px 0 0;
  color: var(--paper-dim);
  font-size: 16px;
  line-height: 1.8;
}

.fact-panel {
  position: relative;
  padding: 24px;
  border-top: 3px solid var(--signal);
  background: rgba(233, 234, 223, 0.055);
  box-shadow: 18px 18px 0 rgba(0, 0, 0, 0.15);
}

.fact-kicker {
  color: var(--warning);
  font: 700 10px/1 var(--mono);
  letter-spacing: 0.18em;
}

.fact-panel > strong {
  display: block;
  margin: 18px 0 28px;
  font: 700 clamp(20px, 2vw, 28px)/1.1 var(--display);
}

.fact-line {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 13px 0;
  border-top: 1px solid var(--line);
  color: var(--paper-dim);
  font-size: 12px;
}

.fact-line b {
  color: var(--paper);
  font-family: var(--mono);
}

.workbench {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.72fr);
  min-height: 760px;
  background: var(--paper);
  color: var(--ink);
  box-shadow: 0 32px 100px rgba(0, 0, 0, 0.25);
}

.form-column,
.output-column {
  padding: clamp(28px, 5vw, 72px);
}

.output-column {
  border-left: 1px solid var(--line-dark);
  background:
    linear-gradient(rgba(16, 27, 29, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 27, 29, 0.03) 1px, transparent 1px),
    #dfe2d6;
  background-size: 24px 24px;
}

.section-heading {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: 42px;
}

.section-number {
  display: grid;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 50%;
  font: 700 11px/1 var(--mono);
}

.section-heading p {
  margin-bottom: 7px;
  color: #66711d;
}

.section-heading h2 {
  margin: 0;
  font: 700 clamp(26px, 3vw, 40px)/1 var(--display);
  letter-spacing: -0.03em;
}

.section-heading.compact {
  margin-bottom: 28px;
}

.source-switch {
  margin-bottom: 34px;
}

.source-switch > span {
  display: block;
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 700;
}

.segmented-control {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--ink);
}

.segmented-control label {
  position: relative;
  cursor: pointer;
}

.segmented-control label + label {
  border-left: 1px solid var(--ink);
}

.segmented-control input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.segmented-control span {
  display: grid;
  min-height: 46px;
  place-items: center;
  padding: 9px;
  font: 700 12px/1 var(--mono);
  transition: background 160ms ease, color 160ms ease;
}

.segmented-control input:checked + span {
  background: var(--ink);
  color: var(--signal);
}

.segmented-control input:focus-visible + span {
  outline: 3px solid var(--warning);
  outline-offset: -3px;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px 22px;
}

.field {
  display: block;
}

.field.wide {
  grid-column: 1 / -1;
}

.field-label {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 9px;
  font-size: 13px;
  font-weight: 800;
}

.field-label small {
  color: rgba(16, 27, 29, 0.52);
  font-weight: 500;
}

.field input,
.field textarea {
  width: 100%;
  border: 0;
  border-bottom: 2px solid var(--ink);
  border-radius: 0;
  outline: none;
  background: transparent;
  color: var(--ink);
  font: 600 15px/1.4 var(--mono);
}

.field input {
  height: 48px;
}

.field textarea {
  padding: 12px 0;
  resize: vertical;
  word-break: break-all;
}

.field input:focus,
.field textarea:focus {
  border-color: #728600;
  box-shadow: 0 3px 0 rgba(114, 134, 0, 0.14);
}

.field input::placeholder,
.field textarea::placeholder {
  color: rgba(16, 27, 29, 0.35);
}

.field-role,
.field-help {
  display: inline-block;
  margin-top: 8px;
  color: rgba(16, 27, 29, 0.48);
  font: 600 10px/1.2 var(--mono);
}

.field-role.active {
  color: #526500;
}

.field-role.active::before {
  content: "● ";
  color: #789400;
}

.advanced-panel {
  margin-top: 36px;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.advanced-panel summary {
  display: flex;
  justify-content: space-between;
  padding: 17px 0;
  cursor: pointer;
  font-weight: 800;
  list-style: none;
}

.advanced-panel summary::-webkit-details-marker {
  display: none;
}

.advanced-panel summary::before {
  content: "+";
  margin-right: 12px;
  color: #66711d;
  font: 700 18px/1 var(--mono);
}

.advanced-panel[open] summary::before {
  content: "−";
}

.advanced-panel summary small {
  margin-left: auto;
  color: rgba(16, 27, 29, 0.45);
  font-weight: 500;
}

.template-field {
  padding: 6px 0 22px;
}

.marker-display {
  padding: 22px 0 10px;
  border-top: 3px solid var(--ink);
  border-bottom: 1px solid var(--line-dark);
}

.marker-display > span {
  font: 700 10px/1 var(--mono);
  letter-spacing: 0.12em;
}

.marker-display output {
  display: block;
  overflow: hidden;
  margin: 18px 0;
  font: 800 clamp(25px, 3vw, 44px)/1 var(--mono);
  letter-spacing: -0.06em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.marker-display output.waiting {
  color: rgba(16, 27, 29, 0.32);
}

.byte-ruler {
  display: flex;
  justify-content: space-between;
  color: rgba(16, 27, 29, 0.42);
  font: 600 9px/1 var(--mono);
}

.byte-ruler i {
  font-style: normal;
}

.transform-map {
  margin: 28px 0;
}

.map-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 10px 0;
  color: rgba(16, 27, 29, 0.55);
  font-size: 12px;
}

.map-row i {
  height: 1px;
  background: repeating-linear-gradient(90deg, currentColor 0 3px, transparent 3px 7px);
}

.map-row b {
  font-family: var(--mono);
  font-size: 10px;
}

.map-row.active {
  color: var(--ink);
}

.map-row.active b {
  color: #5d7000;
}

.generate-button {
  display: flex;
  width: 100%;
  min-height: 64px;
  align-items: center;
  justify-content: space-between;
  padding: 0 22px;
  border: 0;
  background: var(--ink);
  color: var(--paper);
  cursor: pointer;
  font-weight: 800;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.generate-button b {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 50%;
  background: var(--signal);
  color: var(--ink);
  font-size: 20px;
}

.generate-button:hover:not(:disabled) {
  box-shadow: 7px 7px 0 var(--warning);
  transform: translate(-3px, -3px);
}

.generate-button:focus-visible,
.action-grid button:focus-visible {
  outline: 3px solid var(--warning);
  outline-offset: 3px;
}

.generate-button:disabled {
  cursor: wait;
  opacity: 0.72;
}

.generate-button.busy b {
  animation: spin 1s linear infinite;
}

.status-message {
  min-height: 38px;
  margin: 14px 0 0;
  color: rgba(16, 27, 29, 0.55);
  font: 600 11px/1.55 var(--mono);
}

.status-message[data-state="success"] {
  color: #526500;
}

.status-message[data-state="error"] {
  color: #a52d11;
}

.result-panel {
  margin-top: 20px;
  padding: 20px;
  border: 1px solid var(--ink);
  background: var(--paper);
  animation: reveal 260ms ease both;
}

.result-heading {
  display: flex;
  justify-content: space-between;
  margin-bottom: 16px;
  font: 700 10px/1 var(--mono);
  letter-spacing: 0.1em;
}

.result-panel > label {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 800;
}

.result-panel textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--line-dark);
  border-radius: 0;
  background: rgba(16, 27, 29, 0.04);
  color: var(--ink);
  font: 600 11px/1.5 var(--mono);
  resize: vertical;
  word-break: break-all;
}

.action-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 12px;
}

.action-grid button {
  min-height: 42px;
  padding: 8px 10px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  cursor: pointer;
  font: 700 10px/1.2 var(--mono);
}

.action-grid button.secondary {
  grid-column: 1 / -1;
  background: transparent;
  color: var(--ink);
}

.date-note {
  display: grid;
  grid-template-columns: minmax(300px, 0.75fr) minmax(320px, 1fr);
  gap: clamp(36px, 8vw, 130px);
  align-items: center;
  margin-top: 72px;
  padding: clamp(32px, 6vw, 80px);
  border: 1px solid var(--line);
  background: var(--warning);
  color: var(--ink);
}

.section-heading.inverse {
  margin: 0;
}

.section-heading.inverse p {
  color: rgba(16, 27, 29, 0.62);
}

.date-note > p {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 42px 0;
  color: rgba(233, 234, 223, 0.43);
  font: 600 9px/1 var(--mono);
  letter-spacing: 0.1em;
}

@keyframes pulse {
  70% { box-shadow: 0 0 0 8px rgba(200, 241, 53, 0); }
  100% { box-shadow: 0 0 0 0 rgba(200, 241, 53, 0); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes reveal {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 980px) {
  .masthead,
  main,
  footer {
    width: min(100% - 32px, 760px);
  }

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

  .edition {
    display: none;
  }

  .hero {
    grid-template-columns: 34px 1fr;
  }

  .fact-panel {
    grid-column: 2;
  }

  .workbench {
    grid-template-columns: 1fr;
  }

  .output-column {
    border-top: 1px solid var(--line-dark);
    border-left: 0;
  }

  .date-note {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .masthead,
  main,
  footer {
    width: min(100% - 22px, 520px);
  }

  .masthead {
    min-height: 86px;
  }

  .brand-copy,
  .edition {
    display: none;
  }

  .privacy-chip {
    padding: 8px 10px;
    font-size: 9px;
  }

  .hero {
    grid-template-columns: 1fr;
    padding: 64px 0 52px;
  }

  .hero-index {
    display: none;
  }

  .fact-panel {
    grid-column: 1;
  }

  h1 {
    font-size: clamp(44px, 15vw, 68px);
  }

  .form-column,
  .output-column {
    padding: 26px 20px 34px;
  }

  .field-grid,
  .action-grid {
    grid-template-columns: 1fr;
  }

  .field.wide,
  .action-grid button.secondary {
    grid-column: auto;
  }

  .segmented-control {
    grid-template-columns: 1fr;
  }

  .segmented-control label + label {
    border-top: 1px solid var(--ink);
    border-left: 0;
  }

  .field-label {
    display: block;
  }

  .field-label small {
    display: block;
    margin-top: 4px;
  }

  .date-note {
    margin-top: 34px;
    padding: 28px 22px;
  }

  footer {
    display: grid;
    line-height: 1.5;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}