:root {
  --paper: #f2eddf;
  --paper-light: #fffdf7;
  --ink: #171714;
  --muted: #69675f;
  --line: #beb9aa;
  --blue: #1746d1;
  --orange: #ff5a36;
  --acid: #d7ff43;
  --good: #16754a;
  --warn: #a64b19;
  --display: "Fraunces", Georgia, serif;
  --body: "IBM Plex Sans", sans-serif;
  --mono: "IBM Plex Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

button,
input,
textarea,
select {
  color: inherit;
  font: inherit;
}

button,
select {
  cursor: pointer;
}

.paper-grid {
  position: fixed;
  z-index: -1;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(23, 23, 20, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 23, 20, 0.045) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(to bottom, black, transparent 72%);
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  color: white;
  background: var(--ink);
  transform: translateY(-150%);
}

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

.skip-link:not(:focus-visible) {
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.site-header,
main,
footer {
  width: min(1480px, calc(100% - 56px));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 94px;
  border-bottom: 1px solid var(--ink);
}

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

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  color: var(--paper-light);
  background: var(--blue);
  border: 1px solid var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  font: 700 24px/1 var(--display);
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font: 600 18px/1 var(--mono);
  letter-spacing: -0.04em;
}

.brand small,
.privacy-note,
.kicker,
.section-number,
.field-state,
.field-foot,
.proof-label,
.live-chip,
footer {
  font-family: var(--mono);
}

.brand small {
  margin-top: 5px;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.privacy-note {
  display: flex;
  gap: 9px;
  align-items: center;
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.privacy-dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  background: var(--good);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(22, 117, 74, 0.12);
}

.privacy-short { display: none; }

.hero {
  display: grid;
  grid-template-areas:
    "kicker title"
    "note title";
  grid-template-columns: minmax(280px, 0.62fr) minmax(560px, 1.38fr);
  gap: 28px 72px;
  align-items: end;
  min-height: 470px;
  padding: 58px 0 62px;
}

.kicker,
.section-number {
  margin: 0 0 18px;
  color: var(--blue);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero .kicker {
  grid-area: kicker;
  align-self: start;
  margin-top: 8px;
}

.hero h1 {
  grid-area: title;
  width: 100%;
  max-width: 900px;
  margin: 0;
  font: 600 clamp(66px, 5.45vw, 104px)/0.88 var(--display);
  letter-spacing: -0.065em;
}

.hero h1 em {
  position: relative;
  color: var(--orange);
  font-style: italic;
}

.hero h1 em::after {
  position: absolute;
  right: -7px;
  bottom: -5px;
  left: 5px;
  height: 8px;
  background: var(--acid);
  content: "";
  z-index: -1;
  transform: rotate(-1.5deg);
}

.hero-note {
  grid-area: note;
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 8px;
  padding-top: 17px;
  border-top: 1px solid var(--ink);
}

.hero-note p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
}

.proof-mark {
  color: var(--orange);
  font: 600 26px/1 var(--display);
}

.workbench {
  display: grid;
  grid-template-columns: minmax(360px, 0.82fr) minmax(520px, 1.18fr);
  background: var(--paper-light);
  border: 1px solid var(--ink);
  box-shadow: 9px 9px 0 var(--ink);
}

.editor-panel,
.preview-panel {
  min-width: 0;
  padding: 30px;
}

.editor-panel {
  border-right: 1px solid var(--ink);
}

.panel-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.panel-heading h2,
.output-intro h2 {
  margin: 0;
  font: 600 clamp(29px, 3vw, 42px)/1 var(--display);
  letter-spacing: -0.035em;
}

.panel-heading .section-number {
  margin-bottom: 10px;
}

.panel-actions {
  display: flex;
  gap: 8px;
}

.text-button {
  padding: 8px 10px;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  font: 500 11px/1 var(--mono);
  text-transform: uppercase;
}

.text-button:hover,
.text-button:focus-visible {
  color: var(--blue);
  border-color: var(--blue);
}

.field {
  margin-bottom: 20px;
}

.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.field-label,
.field-foot {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.field-label {
  align-items: baseline;
  margin-bottom: 8px;
}

.field-label label {
  font-size: 13px;
  font-weight: 600;
}

.field-state {
  color: var(--muted);
  font-size: 9px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.field[data-valid="true"] .field-state {
  color: var(--good);
}

.field[data-valid="false"] .field-state {
  color: var(--warn);
}

input,
textarea,
select {
  width: 100%;
  min-height: 46px;
  padding: 11px 12px;
  background: #fbf8ef;
  border: 1px solid var(--line);
  border-radius: 0;
  outline: 0;
  font-size: 14px;
}

textarea {
  min-height: 96px;
  resize: vertical;
  line-height: 1.5;
}

input:hover,
textarea:hover,
select:hover {
  border-color: var(--ink);
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--blue);
  box-shadow: 4px 4px 0 rgba(23, 70, 209, 0.18);
}

.field-foot {
  margin-top: 7px;
  color: var(--muted);
  font-size: 9px;
  line-height: 1.4;
}

.field-foot output {
  flex: 0 0 auto;
  color: var(--ink);
}

.advanced-fields {
  margin: 2px 0 22px;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
}

.advanced-fields summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 68px;
  padding: 13px 2px;
  cursor: pointer;
  list-style: none;
}

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

.advanced-fields summary strong,
.advanced-fields summary small {
  display: block;
}

.advanced-fields summary strong {
  font: 600 12px/1.3 var(--mono);
  text-transform: uppercase;
}

.advanced-fields summary small {
  margin-top: 5px;
  color: var(--muted);
  font-size: 11px;
}

.details-toggle {
  display: grid;
  flex: 0 0 32px;
  width: 32px;
  height: 32px;
  place-items: center;
  color: var(--paper-light);
  background: var(--ink);
  font: 500 20px/1 var(--mono);
  transition: transform 180ms ease;
}

.advanced-fields[open] .details-toggle { transform: rotate(45deg); }

.advanced-fields-body {
  padding: 14px 0 2px;
  border-top: 1px solid var(--line);
}

.quality-card {
  display: grid;
  grid-template-columns: 128px 1fr;
  margin-top: 12px;
  background: var(--ink);
  color: var(--paper-light);
}

.score-block {
  display: flex;
  gap: 6px;
  align-items: flex-end;
  padding: 22px 18px;
  color: var(--ink);
  background: var(--acid);
}

.score-block strong {
  font: 600 42px/0.85 var(--display);
}

.score-block span {
  font: 500 9px/1.2 var(--mono);
  text-transform: uppercase;
}

.quality-card ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7px 14px;
  align-content: center;
  margin: 0;
  padding: 16px 18px;
  list-style: none;
  font: 400 9px/1.25 var(--mono);
}

.quality-card li::before {
  display: inline-block;
  width: 14px;
  color: var(--orange);
  content: "×";
}

.quality-card li.pass::before {
  color: var(--acid);
  content: "✓";
}