:root {
  --paper: #f1f0ea;
  --paper-deep: #deddd6;
  --graphite: #16191d;
  --cobalt: #275efe;
  --signal: #e24a3b;
  --slate: #5f666e;
  --line: #b8bab6;
  --line-dark: #7c8184;
  --white: #fffef9;
  --sans: "Aptos", "Segoe UI Variable", "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "Cascadia Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --sheet-width: 1440px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper-deep);
  color: var(--graphite);
  font-family: var(--sans);
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--paper);
  color: var(--graphite);
  font-size: 16px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--cobalt);
  color: var(--white);
}

a {
  color: inherit;
  text-decoration-color: var(--cobalt);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

a:hover {
  text-decoration-thickness: 2px;
}

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

button,
select {
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid var(--cobalt);
  outline-offset: 3px;
}

.visually-hidden,
.honeypot {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: 1rem;
  left: 1rem;
  padding: 0.75rem 1rem;
  background: var(--graphite);
  color: var(--white);
  transform: translateY(-180%);
}

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

.site-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  min-height: 72px;
  max-width: var(--sheet-width);
  margin: 0 auto;
  padding: 0 52px;
  border-bottom: 1px solid var(--line-dark);
  background: var(--paper);
}

.wordmark {
  display: inline-flex;
  gap: 0.14em;
  align-items: baseline;
  color: var(--graphite);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.wordmark b {
  color: var(--cobalt);
}

.site-header > p {
  margin: 0 0 0 2rem;
  color: var(--slate);
  font-size: 0.88rem;
}

.header-actions {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  font-size: 0.82rem;
}

.locale-control {
  display: flex;
  gap: 0.55rem;
  align-items: center;
  color: var(--slate);
}

.locale-control select {
  min-width: 4.5rem;
  padding: 0.35rem 1.8rem 0.35rem 0.5rem;
  border: 1px solid var(--line-dark);
  border-radius: 0;
  background-color: transparent;
  font-family: var(--mono);
}

.worksheet {
  position: relative;
  max-width: var(--sheet-width);
  margin: 0 auto;
  overflow: hidden;
  border-right: 1px solid var(--line);
  border-left: 1px solid var(--line);
  background: var(--paper);
}

.worksheet::before {
  position: absolute;
  z-index: 0;
  top: 0;
  bottom: 0;
  left: 52px;
  width: 3px;
  background: var(--cobalt);
  content: "";
}

.worksheet > * {
  position: relative;
  z-index: 1;
}

.worksheet-heading {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: center;
  min-height: 58px;
  padding: 0.75rem 52px 0.75rem 84px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.74rem;
}

.worksheet-heading div {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  font-weight: 700;
}

.worksheet-heading p {
  margin: 0;
  color: var(--slate);
  text-align: right;
}

.signal {
  display: inline-block;
  width: 0.65rem;
  height: 0.65rem;
  background: var(--signal);
}

.hero {
  padding: clamp(3.5rem, 8vw, 8rem) 7vw clamp(3rem, 6vw, 5rem) max(84px, 7vw);
  border-bottom: 1px solid var(--line);
}

.hero h1 {
  max-width: 1100px;
  margin: 0;
  font-size: clamp(2.85rem, 6.5vw, 6.8rem);
  font-weight: 760;
  letter-spacing: -0.068em;
  line-height: 0.95;
}

.hero p {
  max-width: 760px;
  margin: 2rem 0 0;
  color: var(--slate);
  font-size: clamp(1.02rem, 1.5vw, 1.3rem);
  line-height: 1.55;
}

.diagnostic {
  padding: clamp(2.5rem, 5vw, 5rem) 7vw clamp(3rem, 6vw, 5rem) max(84px, 7vw);
  border-top: 5px solid var(--graphite);
  border-bottom: 1px solid var(--line-dark);
}

.diagnostic-heading {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: start;
  margin-bottom: 2rem;
}

.diagnostic h2,
.interview-layout h2 {
  max-width: 680px;
  margin: 0;
  font-size: clamp(1.6rem, 2.8vw, 2.6rem);
  font-weight: 720;
  letter-spacing: -0.035em;
  line-height: 1.08;
}

.diagnostic-heading p,
.interview-brief > p,
.request > p {
  max-width: 660px;
  margin: 0.75rem 0 0;
  color: var(--slate);
}

.local-only {
  flex: 0 0 auto;
  padding: 0.38rem 0;
  border-bottom: 1px solid var(--graphite);
  font-family: var(--mono);
  font-size: 0.73rem;
  font-weight: 600;
}

.local-only > span:first-child {
  color: var(--cobalt);
}

.calculation fieldset {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 0;
  margin: 0;
  border: 1px solid var(--line-dark);
}

.calc-field {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-width: 0;
  padding: 1rem 1.1rem;
  border-right: 1px solid var(--line);
}

.calc-field:last-child {
  border-right: 0;
}

.calc-field > span:first-child {
  min-height: 2.8em;
  color: var(--slate);
  font-size: 0.78rem;
  font-weight: 650;
}

.calc-field input {
  width: 100%;
  min-width: 0;
  padding: 0.3rem 0;
  border: 0;
  border-bottom: 2px solid var(--graphite);
  border-radius: 0;
  background: transparent;
  font-family: var(--mono);
  font-size: clamp(1.6rem, 3vw, 2.8rem);
  font-variant-numeric: tabular-nums;
  line-height: 1.15;
}

.calc-field input:focus {
  border-bottom-color: var(--cobalt);
  outline: 0;
}

.calc-field input:focus-visible {
  box-shadow: 0 3px 0 var(--cobalt);
}

.calc-field small {
  margin-top: 0.55rem;
  color: var(--slate);
  font-size: 0.7rem;
}

.currency-input {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  font-family: var(--mono);
  font-size: 1.15rem;
}

.currency-input input {
  padding-left: 0.25rem;
}

.equation {
  display: flex;
  gap: clamp(0.45rem, 1.7vw, 1.5rem);
  align-items: center;
  min-height: 64px;
  padding: 0.75rem 1rem;
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
  border-left: 1px solid var(--line-dark);
  color: var(--slate);
  font-family: var(--mono);
  font-size: clamp(0.78rem, 1.6vw, 1rem);
  font-variant-numeric: tabular-nums;
}

.equation span {
  color: var(--graphite);
}

.equation b:last-child {
  margin-left: auto;
  color: var(--cobalt);
  font-size: 1.5rem;
}

.diagnostic-result {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(220px, 1fr);
  border-right: 1px solid var(--graphite);
  border-bottom: 1px solid var(--graphite);
  border-left: 1px solid var(--graphite);
}

.diagnostic-result output {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 190px;
  padding: 1.25rem;
}

.diagnostic-result output:first-child {
  border-right: 1px solid var(--graphite);
}

.diagnostic-result output span {
  color: var(--slate);
  font-size: 0.82rem;
  font-weight: 650;
}

.diagnostic-result output strong {
  display: block;
  overflow-wrap: anywhere;
  color: var(--cobalt);
  font-family: var(--mono);
  font-size: clamp(2.6rem, 7vw, 7rem);
  font-weight: 640;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.07em;
  line-height: 0.88;
}

.diagnostic-result output:last-child strong {
  color: var(--graphite);
  font-size: clamp(1.8rem, 3.5vw, 3.8rem);
}

.diagnostic-disclaimer {
  margin: 0;
  padding: 0.85rem 1rem;
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
  border-left: 1px solid var(--line-dark);
  color: var(--slate);
  font-size: 0.78rem;
}

.interview-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.28fr);
  padding-left: 52px;
}

.interview-brief,
.request {
  padding: clamp(3rem, 6vw, 6rem) clamp(2rem, 5vw, 5rem);
}

.interview-brief {
  border-right: 1px solid var(--line-dark);
}

.interview-brief ol {
  padding: 0;
  margin: 2.5rem 0;
  list-style: none;
  counter-reset: incident-questions;
}

.interview-brief li {
  position: relative;
  padding: 1rem 0 1rem 3rem;
  border-top: 1px solid var(--line);
  counter-increment: incident-questions;
}

.interview-brief li:last-child {
  border-bottom: 1px solid var(--line);
}

.interview-brief li::before {
  position: absolute;
  left: 0;
  color: var(--cobalt);
  font-family: var(--mono);
  font-size: 0.82rem;
  content: counter(incident-questions, decimal-leading-zero);
}

.data-warning {
  padding: 1rem 0 1rem 1rem;
  border-left: 4px solid var(--signal);
  color: var(--graphite) !important;
  font-size: 0.88rem;
  font-weight: 650;
}

.request {
  background: var(--white);
}

.runtime-note {
  padding: 0.8rem 1rem;
  border-left: 4px solid var(--signal);
  color: var(--graphite) !important;
  font-weight: 650;
}

#interview-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem 1.25rem;
  margin-top: 2.5rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  min-width: 0;
}

.form-field > span:first-child {
  color: var(--slate);
  font-size: 0.78rem;
  font-weight: 650;
}

.form-field > span small {
  margin-left: 0.35rem;
  color: var(--slate);
  font-size: 0.68rem;
  font-weight: 450;
}

.form-field input,
.form-field textarea {
  width: 100%;
  padding: 0.75rem 0;
  border: 0;
  border-bottom: 1px solid var(--line-dark);
  border-radius: 0;
  background: transparent;
}

.form-field textarea {
  padding: 0.9rem;
  border: 1px solid var(--line-dark);
  resize: vertical;
}

.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--cobalt);
  outline: 0;
  box-shadow: 0 2px 0 var(--cobalt);
}

.form-field input:focus-visible,
.form-field textarea:focus-visible {
  outline: 3px solid var(--cobalt);
  outline-offset: 2px;
}

.form-field small {
  color: var(--slate);
  font-size: 0.7rem;
}

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

.consent {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
  align-items: start;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 0.83rem;
}

.consent input {
  width: 1.15rem;
  height: 1.15rem;
  margin: 0.15rem 0 0;
  accent-color: var(--cobalt);
}

.submission-boundary {
  display: grid;
  grid-template-columns: minmax(130px, 0.28fr) 1fr;
  gap: 1.5rem;
  padding: 1rem 0;
  border-top: 4px solid var(--graphite);
  border-bottom: 1px solid var(--graphite);
  font-size: 0.78rem;
}

.submission-boundary strong {
  font-family: var(--mono);
}

.submission-boundary p {
  margin: 0;
  color: var(--slate);
}

.submit-row {
  display: grid;
  grid-template-columns: minmax(180px, 0.42fr) 1fr;
  gap: 1rem;
  align-items: center;
}

.submit-row button,
.copy-button {
  min-height: 52px;
  padding: 0.85rem 1rem;
  border: 2px solid var(--cobalt);
  border-radius: 0;
  background: var(--cobalt);
  color: var(--white);
  font-weight: 750;
  text-align: left;
}

.submit-row button:hover,
.copy-button:hover {
  background: var(--graphite);
  border-color: var(--graphite);
}

.submit-row button:disabled {
  cursor: not-allowed;
  opacity: 0.58;
}

#form-status,
#copy-status {
  min-height: 1.5em;
  margin: 0;
  color: var(--slate);
  font-size: 0.8rem;
}

#form-status[data-state="error"] {
  color: var(--signal);
  font-weight: 650;
}

#form-status[data-state="closed"] {
  color: var(--graphite);
  font-weight: 650;
}

.receipt {
  padding: 1.25rem;
  border: 2px solid var(--cobalt);
  background: var(--paper);
}

.receipt h3,
.receipt p {
  margin-top: 0;
}

.receipt dl {
  margin: 1rem 0;
  font-family: var(--mono);
  font-size: 0.74rem;
}

.receipt dl div {
  display: grid;
  grid-template-columns: minmax(130px, 0.28fr) 1fr;
  gap: 1rem;
  padding: 0.65rem 0;
  border-top: 1px solid var(--line);
}

.receipt dd {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
}

.copy-button {
  min-height: 42px;
  background: transparent;
  color: var(--cobalt);
  font-size: 0.78rem;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  max-width: var(--sheet-width);
  min-height: 100px;
  margin: 0 auto;
  padding: 2rem 52px;
  border-top: 1px solid var(--line-dark);
  background: var(--graphite);
  color: var(--white);
  font-size: 0.78rem;
}

.site-footer p {
  margin: 0;
  color: #c2c7cd;
}

.site-footer nav {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

html[dir="rtl"] .site-header > p {
  margin-right: 2rem;
  margin-left: 0;
}

html[dir="rtl"] .worksheet::before {
  right: 52px;
  left: auto;
}

html[dir="rtl"] .worksheet-heading {
  padding-right: 84px;
  padding-left: 52px;
}

html[dir="rtl"] .worksheet-heading p {
  text-align: left;
}

html[dir="rtl"] .hero,
html[dir="rtl"] .diagnostic {
  padding-right: max(84px, 7vw);
  padding-left: 7vw;
}

html[dir="rtl"] .calc-field {
  border-right: 0;
  border-left: 1px solid var(--line);
}

html[dir="rtl"] .calc-field:last-child {
  border-left: 0;
}

html[dir="rtl"] .equation b:last-child {
  margin-right: auto;
  margin-left: 0;
}

html[dir="rtl"] .diagnostic-result output:first-child {
  border-right: 0;
  border-left: 1px solid var(--graphite);
}

html[dir="rtl"] .interview-layout {
  padding-right: 52px;
  padding-left: 0;
}

html[dir="rtl"] .interview-brief {
  border-right: 0;
  border-left: 1px solid var(--line-dark);
}

html[dir="rtl"] .interview-brief li {
  padding-right: 3rem;
  padding-left: 0;
}

html[dir="rtl"] .interview-brief li::before {
  right: 0;
  left: auto;
}

html[dir="rtl"] .data-warning,
html[dir="rtl"] .runtime-note {
  border-right: 4px solid var(--signal);
  border-left: 0;
}

html[dir="rtl"] .form-field > span small {
  margin-right: 0.35rem;
  margin-left: 0;
}

html[dir="rtl"] .submit-row button,
html[dir="rtl"] .copy-button {
  text-align: right;
}

@media (max-width: 900px) {
  .site-header {
    grid-template-columns: auto 1fr;
    gap: 0.5rem 1rem;
    padding: 0.8rem 28px;
  }

  .site-header > p {
    display: none;
  }

  .header-actions {
    justify-self: end;
  }

  .worksheet::before {
    left: 28px;
  }

  html[dir="rtl"] .worksheet::before {
    right: 28px;
  }

  .worksheet-heading {
    padding-right: 28px;
    padding-left: 52px;
  }

  html[dir="rtl"] .worksheet-heading {
    padding-right: 52px;
    padding-left: 28px;
  }

  .hero,
  .diagnostic {
    padding-right: 28px;
    padding-left: 52px;
  }

  html[dir="rtl"] .hero,
  html[dir="rtl"] .diagnostic {
    padding-right: 52px;
    padding-left: 28px;
  }

  .calculation fieldset {
    grid-template-columns: 1fr 1fr;
  }

  .calc-field:nth-child(2) {
    border-right: 0;
  }

  .calc-field:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  html[dir="rtl"] .calc-field:nth-child(2) {
    border-left: 0;
  }

  .interview-layout {
    grid-template-columns: 1fr;
    padding-left: 28px;
  }

  html[dir="rtl"] .interview-layout {
    padding-right: 28px;
  }

  .interview-brief {
    border-right: 0;
    border-bottom: 1px solid var(--line-dark);
  }

  html[dir="rtl"] .interview-brief {
    border-left: 0;
  }
}

@media (max-width: 620px) {
  body {
    font-size: 15px;
  }

  .site-header {
    grid-template-columns: 1fr auto;
    padding: 0.7rem 18px;
  }

  .header-actions > a {
    display: none;
  }

  .locale-control > span {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
  }

  .worksheet::before {
    left: 18px;
    width: 2px;
  }

  html[dir="rtl"] .worksheet::before {
    right: 18px;
  }

  .worksheet-heading {
    align-items: start;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.8rem 18px 0.8rem 36px;
  }

  .worksheet-heading p {
    padding-left: 1.4rem;
    text-align: left;
  }

  html[dir="rtl"] .worksheet-heading {
    padding: 0.8rem 36px 0.8rem 18px;
  }

  html[dir="rtl"] .worksheet-heading p {
    padding-right: 1.4rem;
    padding-left: 0;
    text-align: right;
  }

  .hero,
  .diagnostic {
    padding-right: 18px;
    padding-left: 36px;
  }

  html[dir="rtl"] .hero,
  html[dir="rtl"] .diagnostic {
    padding-right: 36px;
    padding-left: 18px;
  }

  .hero h1 {
    font-size: clamp(2.5rem, 13vw, 4.2rem);
  }

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

  .calculation fieldset {
    grid-template-columns: 1fr;
  }

  .calc-field,
  .calc-field:nth-child(2) {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .calc-field:last-child {
    border-bottom: 0;
  }

  html[dir="rtl"] .calc-field,
  html[dir="rtl"] .calc-field:nth-child(2) {
    border-left: 0;
  }

  .equation {
    gap: 0.35rem;
    overflow-x: auto;
    white-space: nowrap;
  }

  .diagnostic-result {
    grid-template-columns: 1fr;
  }

  .diagnostic-result output {
    min-height: 145px;
  }

  .diagnostic-result output:first-child,
  html[dir="rtl"] .diagnostic-result output:first-child {
    border-right: 0;
    border-bottom: 1px solid var(--graphite);
    border-left: 0;
  }

  .diagnostic-result output strong {
    font-size: clamp(2.8rem, 17vw, 5.2rem);
  }

  .interview-layout {
    padding-left: 18px;
  }

  html[dir="rtl"] .interview-layout {
    padding-right: 18px;
  }

  .interview-brief,
  .request {
    padding: 2.75rem 18px;
  }

  #interview-form {
    grid-template-columns: 1fr;
  }

  #interview-form > * {
    grid-column: 1;
  }

  .submission-boundary,
  .submit-row,
  .receipt dl div {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .site-footer {
    flex-direction: column;
    padding: 2rem 18px;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
}