:root {
  --paper: #f4f1e7;
  --paper-deep: #e9e5d7;
  --card: #fffdf8;
  --ink: #182824;
  --muted: #60706a;
  --muted-light: #aebcb2;
  --line: #d4dbd1;
  --line-dark: #aebbb0;
  --lime: #d8ee72;
  --lime-dark: #7b8d33;
  --coral: #f28b68;
  --sky: #cbe5de;
  --night: #1a2c27;
  --white: #fffef9;
  --shadow: 0 18px 40px rgba(24, 40, 36, 0.09);
  --shadow-small: 0 7px 20px rgba(24, 40, 36, 0.07);
  --radius: 14px;
  --radius-large: 24px;
  --shell: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

body::selection {
  background: var(--lime);
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  color: var(--lime-dark);
}

button,
select {
  font: inherit;
}

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

.shell {
  width: min(var(--shell), calc(100% - 48px));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--night);
  color: var(--white);
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

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

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(244, 241, 231, 0.94);
}

.nav-wrap {
  min-height: 78px;
  display: flex;
  align-items: center;
  gap: 30px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  min-width: max-content;
}

.brand:hover,
.footer-brand:hover {
  color: var(--ink);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 37px;
  height: 37px;
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  background: var(--lime);
  font-weight: 900;
  line-height: 1;
}

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

.brand strong {
  font-size: 1rem;
  letter-spacing: 0.04em;
}

.brand small {
  margin-top: 1px;
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(18px, 3vw, 38px);
  margin-left: auto;
  color: var(--muted);
  font-size: 0.88rem;
}

.main-nav a {
  position: relative;
  padding: 9px 0;
}

.main-nav a::after {
  position: absolute;
  right: 0;
  bottom: 3px;
  left: 0;
  height: 2px;
  background: var(--lime-dark);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.main-nav a:hover::after,
.main-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-action,
.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  border: 1.5px solid var(--ink);
  border-radius: 999px;
  font-weight: 800;
  line-height: 1.1;
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.nav-action {
  padding: 10px 17px;
  background: var(--ink);
  color: var(--white);
  font-size: 0.84rem;
  white-space: nowrap;
}

.nav-action:hover,
.nav-action:focus-visible {
  background: var(--lime);
  color: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(310px, 0.92fr);
  align-items: center;
  gap: clamp(40px, 7vw, 105px);
  min-height: 670px;
  padding-top: 80px;
  padding-bottom: 86px;
}

.eyebrow,
.section-kicker,
.form-step,
.disclosure-label,
.slot-file,
.footer-label {
  margin: 0;
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 850;
  letter-spacing: 0.13em;
  line-height: 1.4;
  text-transform: uppercase;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}

.eyebrow-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--coral);
  box-shadow: 0 0 0 4px rgba(242, 139, 104, 0.15);
}

.hero h1 {
  max-width: 780px;
  margin: 22px 0 25px;
  font-size: clamp(3rem, 6.3vw, 5.9rem);
  font-weight: 900;
  letter-spacing: -0.075em;
  line-height: 1.04;
}

.hero h1 em {
  position: relative;
  z-index: 0;
  font-style: normal;
  white-space: nowrap;
}

.hero h1 em::after {
  position: absolute;
  z-index: -1;
  right: -3px;
  bottom: 5px;
  left: -3px;
  height: 0.25em;
  background: var(--lime);
  content: "";
  transform: rotate(-1.5deg);
}

.hero-lede {
  max-width: 620px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.03rem, 1.55vw, 1.2rem);
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 22px;
  margin-top: 34px;
}

.button {
  padding: 12px 20px;
}

.button-primary {
  background: var(--lime);
  color: var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--ink);
  color: var(--lime);
  box-shadow: 2px 2px 0 var(--lime-dark);
  transform: translate(2px, 2px);
}

.button-light {
  border-color: var(--white);
  background: transparent;
  color: var(--white);
}

.button-light:hover,
.button-light:focus-visible {
  background: var(--white);
  color: var(--night);
}

.button-full {
  width: 100%;
  margin-top: 6px;
}

.text-link,
.arrow-link {
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 800;
  text-decoration: underline;
  text-decoration-color: var(--line-dark);
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
}

.text-link:hover,
.arrow-link:hover {
  color: var(--lime-dark);
  text-decoration-color: var(--lime-dark);
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  max-width: 650px;
  margin-top: 64px;
  padding-top: 20px;
  border-top: 1px solid var(--line-dark);
}

.hero-facts strong,
.hero-facts span {
  display: block;
}

.hero-facts strong {
  font-size: 1.3rem;
  letter-spacing: -0.02em;
}

.hero-facts span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.5;
}

.hero-visual {
  position: relative;
  min-height: 430px;
  display: grid;
  place-items: center;
}

.note-card {
  position: relative;
  z-index: 1;
  width: min(100%, 420px);
  padding: 30px 30px 24px;
  border: 1.5px solid var(--ink);
  border-radius: 3px;
  background: var(--card);
  box-shadow: 12px 14px 0 var(--coral), var(--shadow);
  transform: rotate(2.4deg);
}

.note-card-back {
  position: absolute;
  z-index: 0;
  width: min(100%, 410px);
  height: 405px;
  padding: 0;
  background: var(--sky);
  box-shadow: none;
  transform: translate(-19px, 22px) rotate(-5deg);
}

.note-topline,
.note-footer,
.slot-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.note-topline,
.note-footer {
  color: var(--muted);
  font-size: 0.67rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.note-stamp {
  padding: 4px 8px;
  border: 1px solid var(--ink);
  border-radius: 4px;
  background: var(--lime);
  color: var(--ink);
  font-size: 0.62rem;
  letter-spacing: 0.05em;
}

.note-card h2 {
  margin: 47px 0 11px;
  font-size: clamp(1.85rem, 3.8vw, 2.7rem);
  letter-spacing: -0.06em;
  line-height: 1.1;
}

.note-card > p {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.75;
}

.note-list {
  display: grid;
  gap: 0;
  margin-top: 29px;
  border-top: 1px solid var(--line);
}

.note-list > div {
  display: grid;
  grid-template-columns: 39px 1fr auto;
  align-items: center;
  gap: 10px;
  min-height: 55px;
  border-bottom: 1px solid var(--line);
  font-size: 0.88rem;
}

.note-list b {
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 750;
  letter-spacing: 0.06em;
}

.note-number,
.step-number,
.principle-index {
  color: var(--coral);
  font-size: 0.73rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.note-footer {
  margin-top: 18px;
}

.principles-band {
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  background: var(--night);
  color: var(--white);
}

.principles-grid {
  display: grid;
  grid-template-columns: 0.72fr repeat(3, 1fr);
  align-items: stretch;
}

.principles-grid > * {
  min-height: 118px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 22px 24px;
  border-right: 1px solid rgba(255, 254, 249, 0.2);
}

.principles-grid > *:first-child {
  padding-left: 0;
}

.principles-grid > *:last-child {
  border-right: 0;
}

.principles-band .section-kicker {
  color: var(--lime);
}

.principle-item {
  gap: 2px;
}

.principle-item strong {
  font-size: 1rem;
}

.principle-item > span:last-child {
  color: var(--muted-light);
  font-size: 0.79rem;
}

.intro-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.7fr);
  gap: clamp(44px, 10vw, 160px);
  padding-top: 132px;
  padding-bottom: 124px;
}

.section-heading h2,
.checker-intro h2,
.method-heading h2,
.articles-heading h2 {
  margin: 18px 0 0;
  font-size: clamp(2.45rem, 5vw, 4.6rem);
  font-weight: 900;
  letter-spacing: -0.07em;
  line-height: 1.1;
}

.section-heading h2 span,
.checker-intro h2 span,
.method-heading h2 span,
.articles-heading h2 span {
  color: var(--lime-dark);
}

.intro-copy {
  max-width: 470px;
  padding-top: 35px;
}

.intro-copy p {
  margin: 0 0 20px;
  font-size: 1.08rem;
  line-height: 1.85;
}

.intro-copy .muted-copy {
  color: var(--muted);
  font-size: 0.91rem;
}

.arrow-link {
  display: inline-block;
  margin-top: 11px;
}

.checker-section {
  display: grid;
  grid-template-columns: minmax(250px, 0.74fr) minmax(0, 1.26fr);
  gap: clamp(32px, 6vw, 82px);
  padding-top: 82px;
  padding-bottom: 120px;
  scroll-margin-top: 24px;
}

.checker-intro {
  padding-top: 10px;
}

.checker-intro > p:not(.eyebrow) {
  max-width: 390px;
  margin: 27px 0 0;
  color: var(--muted);
  line-height: 1.85;
}

.checker-promises {
  display: grid;
  gap: 14px;
  margin-top: 39px;
  padding-top: 25px;
  border-top: 1px solid var(--line-dark);
}

.checker-promises > div {
  display: flex;
  align-items: center;
  gap: 12px;
}

.promise-icon {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--ink);
  border-radius: 50%;
  background: var(--lime);
  font-size: 0.68rem;
  font-weight: 900;
}

.checker-promises strong,
.checker-promises small {
  display: block;
}

.checker-promises strong {
  font-size: 0.87rem;
}

.checker-promises small {
  color: var(--muted);
  font-size: 0.76rem;
}

.checker-card {
  overflow: hidden;
  border: 1px solid var(--ink);
  border-radius: var(--radius-large);
  background: var(--card);
  box-shadow: var(--shadow);
}

#checker-form {
  padding: clamp(24px, 4vw, 44px);
}

.form-header {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.form-step {
  color: var(--lime-dark);
  font-size: 0.67rem;
}

.required-note {
  color: var(--muted);
  font-size: 0.74rem;
}

.required-note span,
.required-mark {
  color: var(--coral);
}

.form-field {
  margin-top: 25px;
}

.form-field label {
  display: block;
  font-weight: 850;
}

.field-hint {
  margin: 2px 0 9px;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.5;
}

select {
  width: 100%;
  min-height: 52px;
  padding: 10px 43px 10px 14px;
  border: 1px solid var(--line-dark);
  border-radius: 9px;
  background-color: var(--white);
  background-image: linear-gradient(45deg, transparent 50%, var(--ink) 50%), linear-gradient(135deg, var(--ink) 50%, transparent 50%);
  background-position: calc(100% - 18px) 22px, calc(100% - 13px) 22px;
  background-repeat: no-repeat;
  background-size: 5px 5px, 5px 5px;
  color: var(--ink);
  cursor: pointer;
  appearance: none;
}

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

.button-full {
  margin-top: 31px;
}

.form-footnote,
.form-status {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.74rem;
  line-height: 1.55;
  text-align: center;
}

.form-status {
  min-height: 1.3em;
  color: var(--coral);
  font-weight: 750;
}

.result-panel {
  padding: clamp(28px, 4vw, 46px);
  background: var(--night);
  color: var(--white);
}

.result-kicker {
  color: var(--lime);
  font-size: 0.71rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.result-panel h3 {
  max-width: 580px;
  margin: 18px 0 10px;
  font-size: clamp(1.7rem, 4vw, 2.8rem);
  letter-spacing: -0.05em;
  line-height: 1.15;
}

.result-summary {
  max-width: 680px;
  margin: 0;
  color: var(--muted-light);
}

.result-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(220px, 0.92fr);
  gap: 28px;
  margin-top: 32px;
  padding-top: 25px;
  border-top: 1px solid rgba(255, 254, 249, 0.2);
}

.result-columns h4 {
  margin: 0 0 12px;
  color: var(--lime);
  font-size: 0.83rem;
  letter-spacing: 0.05em;
}

.result-columns ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.result-columns li {
  position: relative;
  padding-left: 20px;
  color: var(--white);
  font-size: 0.88rem;
  line-height: 1.65;
}

.result-columns li::before {
  position: absolute;
  top: 0.58em;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--coral);
  content: "";
}

.result-columns p {
  margin: 0;
  color: var(--muted-light);
  font-size: 0.88rem;
  line-height: 1.75;
}

.result-keep {
  margin-top: 28px;
  padding: 18px 19px;
  border: 1px solid rgba(216, 238, 114, 0.46);
  background: rgba(216, 238, 114, 0.08);
}

.result-keep strong {
  color: var(--lime);
  font-size: 0.88rem;
}

.result-keep p {
  margin: 5px 0 0;
  color: var(--muted-light);
  font-size: 0.82rem;
  line-height: 1.7;
}

.result-panel .button-light {
  margin-top: 26px;
}

.method-section {
  padding-top: 90px;
  padding-bottom: 112px;
  border-top: 1px solid var(--line-dark);
}

.method-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(310px, 0.82fr);
  gap: clamp(38px, 8vw, 112px);
  align-items: start;
  margin-top: 62px;
}

.method-steps {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line-dark);
}

.method-step {
  display: grid;
  grid-template-columns: 61px 1fr;
  gap: 22px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.step-number {
  padding-top: 4px;
}

.method-step h3 {
  margin: 0 0 5px;
  font-size: 1.14rem;
  letter-spacing: -0.02em;
}

.method-step p {
  max-width: 540px;
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.8;
}

.disclosure-card {
  padding: 29px;
  border: 1px solid var(--ink);
  background: var(--lime);
  box-shadow: 8px 8px 0 var(--ink);
}

.disclosure-label {
  color: var(--lime-dark);
  font-size: 0.66rem;
}

.disclosure-card h3 {
  max-width: 340px;
  margin: 22px 0 17px;
  font-size: 1.62rem;
  letter-spacing: -0.04em;
  line-height: 1.25;
}

.disclosure-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.disclosure-list li {
  position: relative;
  padding-left: 20px;
  font-size: 0.84rem;
  line-height: 1.7;
}

.disclosure-list li::before {
  position: absolute;
  top: 0.68em;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ink);
  content: "";
}

.disclosure-note {
  margin: 21px 0 0;
  padding-top: 17px;
  border-top: 1px solid rgba(24, 40, 36, 0.25);
  color: rgba(24, 40, 36, 0.72);
  font-size: 0.77rem;
  line-height: 1.65;
}

.sources-block {
  display: grid;
  grid-template-columns: minmax(220px, 0.62fr) minmax(0, 1.38fr);
  gap: 36px;
  margin-top: 67px;
  padding-top: 24px;
  border-top: 1px solid var(--line-dark);
}

.sources-note {
  max-width: 260px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.65;
}

.source-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 28px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.source-links li {
  border-bottom: 1px solid var(--line);
}

.source-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 50px;
  font-size: 0.84rem;
  font-weight: 750;
}

.source-links a span {
  color: var(--coral);
  font-size: 1rem;
}

.articles-section {
  padding-top: 94px;
  padding-bottom: 118px;
  border-top: 1px solid var(--line-dark);
}

.articles-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 35px;
}

.articles-heading > p {
  max-width: 365px;
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.91rem;
  line-height: 1.8;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 17px;
  margin-top: 59px;
}

.article-slot {
  min-height: 328px;
  display: flex;
  flex-direction: column;
  padding: 23px 23px 21px;
  border: 1px dashed var(--line-dark);
  border-radius: var(--radius);
  background: rgba(255, 253, 248, 0.44);
}

.slot-top {
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.slot-status {
  padding: 4px 8px;
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  font-size: 0.62rem;
  letter-spacing: 0.03em;
}

.article-slot h3 {
  margin: 42px 0 12px;
  font-size: 1.45rem;
  letter-spacing: -0.045em;
  line-height: 1.3;
}

.article-slot p {
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.75;
}

.slot-file {
  margin-top: auto;
  padding-top: 28px;
  color: var(--lime-dark);
  font-size: 0.64rem;
  letter-spacing: 0.04em;
  text-transform: none;
}

.articles-footnote {
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 0.75rem;
  text-align: right;
}

code {
  padding: 2px 5px;
  border-radius: 4px;
  background: var(--paper-deep);
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.92em;
}

.site-footer {
  border-top: 1px solid var(--ink);
  background: var(--night);
  color: var(--white);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1fr;
  gap: 30px;
  padding-top: 43px;
  padding-bottom: 42px;
}

.footer-brand {
  font-size: 1.08rem;
  font-weight: 850;
  letter-spacing: 0.04em;
}

.footer-grid p {
  margin: 8px 0 0;
  color: var(--muted-light);
  font-size: 0.79rem;
  line-height: 1.6;
}

.footer-label {
  color: var(--lime) !important;
  font-size: 0.64rem !important;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 17px;
  padding-bottom: 22px;
  border-top: 1px solid rgba(255, 254, 249, 0.17);
  color: var(--muted-light);
  font-size: 0.7rem;
}

:focus-visible {
  outline: 3px solid var(--coral);
  outline-offset: 4px;
}

[hidden] {
  display: none !important;
}

@media (max-width: 1024px) {
  .hero {
    gap: 48px;
    padding-top: 64px;
  }

  .hero h1 {
    font-size: clamp(2.9rem, 7vw, 5rem);
  }

  .principles-grid {
    grid-template-columns: 0.7fr repeat(3, 1fr);
  }

  .principles-grid > * {
    padding-inline: 16px;
  }
}

@media (max-width: 768px) {
  .shell {
    width: min(var(--shell), calc(100% - 36px));
  }

  .nav-wrap {
    min-height: 72px;
    flex-wrap: wrap;
    gap: 13px 22px;
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .main-nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    gap: 22px;
    overflow-x: auto;
    font-size: 0.81rem;
  }

  .nav-action {
    margin-left: auto;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 57px;
    padding-bottom: 72px;
  }

  .hero h1 {
    max-width: 660px;
    font-size: clamp(3rem, 11vw, 5rem);
  }

  .hero-facts {
    margin-top: 44px;
  }

  .hero-visual {
    min-height: 390px;
    margin-top: 7px;
  }

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

  .principles-grid > * {
    min-height: 106px;
    padding: 18px 16px;
  }

  .principles-grid > *:first-child {
    grid-column: 1 / -1;
    min-height: auto;
    padding: 23px 0 10px;
    border-right: 0;
  }

  .principles-grid > *:nth-child(3) {
    border-right: 0;
  }

  .intro-section,
  .checker-section,
  .method-body {
    grid-template-columns: 1fr;
  }

  .intro-section {
    gap: 4px;
    padding-top: 91px;
    padding-bottom: 82px;
  }

  .intro-copy {
    padding-top: 23px;
  }

  .checker-section {
    gap: 35px;
    padding-top: 67px;
    padding-bottom: 88px;
  }

  .checker-intro > p:not(.eyebrow) {
    max-width: 600px;
  }

  .checker-promises {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    max-width: 680px;
  }

  .checker-promises > div {
    align-items: flex-start;
  }

  .checker-promises small {
    font-size: 0.68rem;
  }

  .method-section,
  .articles-section {
    padding-top: 75px;
    padding-bottom: 85px;
  }

  .method-body {
    gap: 45px;
    margin-top: 45px;
  }

  .sources-block {
    grid-template-columns: 1fr;
    gap: 28px;
    margin-top: 55px;
  }

  .sources-note {
    max-width: 600px;
  }

  .articles-heading {
    display: block;
  }

  .articles-heading > p {
    max-width: 600px;
    margin-top: 22px;
  }

  .article-grid {
    grid-template-columns: 1fr;
    gap: 13px;
    margin-top: 38px;
  }

  .article-slot {
    min-height: auto;
  }

  .article-slot h3 {
    margin-top: 29px;
  }

  .slot-file {
    margin-top: 24px;
  }

  .articles-footnote {
    text-align: left;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    padding-top: 35px;
    padding-bottom: 32px;
  }

  .footer-grid > div:first-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 15px;
  }

  .shell {
    width: min(var(--shell), calc(100% - 28px));
  }

  .brand small {
    display: none;
  }

  .nav-action {
    min-height: 40px;
    padding: 8px 12px;
    font-size: 0.74rem;
  }

  .main-nav {
    gap: 18px;
  }

  .hero {
    padding-top: 45px;
    padding-bottom: 58px;
  }

  .hero h1 {
    margin-top: 17px;
    font-size: clamp(2.75rem, 14vw, 4rem);
  }

  .hero-lede {
    font-size: 0.98rem;
    line-height: 1.8;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 16px;
    margin-top: 26px;
  }

  .hero-facts {
    gap: 10px;
    margin-top: 38px;
  }

  .hero-facts strong {
    font-size: 1.05rem;
  }

  .hero-facts span {
    font-size: 0.68rem;
  }

  .hero-visual {
    min-height: 328px;
  }

  .note-card {
    padding: 23px 19px 20px;
    box-shadow: 8px 10px 0 var(--coral), var(--shadow-small);
  }

  .note-card-back {
    height: 317px;
    transform: translate(-9px, 16px) rotate(-5deg);
  }

  .note-card h2 {
    margin-top: 35px;
    font-size: 2rem;
  }

  .note-list {
    margin-top: 20px;
  }

  .note-list > div {
    min-height: 47px;
    grid-template-columns: 31px 1fr auto;
    font-size: 0.77rem;
  }

  .note-list b {
    font-size: 0.62rem;
  }

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

  .principles-grid > *,
  .principles-grid > *:nth-child(3) {
    min-height: auto;
    padding: 16px 0;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 254, 249, 0.2);
  }

  .principles-grid > *:last-child {
    border-bottom: 0;
  }

  .principles-grid > *:first-child {
    padding-top: 22px;
    padding-bottom: 8px;
  }

  .section-heading h2,
  .checker-intro h2,
  .method-heading h2,
  .articles-heading h2 {
    font-size: clamp(2.3rem, 12vw, 3.4rem);
  }

  .intro-section {
    padding-top: 75px;
    padding-bottom: 68px;
  }

  .checker-section {
    padding-top: 56px;
    padding-bottom: 70px;
  }

  #checker-form,
  .result-panel {
    padding: 23px 19px;
  }

  .form-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }

  .checker-promises {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .checker-promises > div {
    align-items: center;
  }

  .checker-promises small {
    font-size: 0.75rem;
  }

  .result-columns {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .method-section,
  .articles-section {
    padding-top: 65px;
    padding-bottom: 70px;
  }

  .method-step {
    grid-template-columns: 42px 1fr;
    gap: 11px;
    padding: 23px 0;
  }

  .disclosure-card {
    padding: 23px 19px;
    box-shadow: 5px 6px 0 var(--ink);
  }

  .source-links {
    grid-template-columns: 1fr;
  }

  .article-slot {
    padding: 19px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .footer-grid > div:first-child {
    grid-column: auto;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
    gap: 7px;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #17221f;
    --paper-deep: #22312c;
    --card: #1d2c27;
    --ink: #f4f1e7;
    --muted: #a9b8ae;
    --muted-light: #bdc9bf;
    --line: #405049;
    --line-dark: #708078;
    --night: #101a17;
    --white: #f4f1e7;
    --shadow: 0 18px 40px rgba(0, 0, 0, 0.24);
    --shadow-small: 0 7px 20px rgba(0, 0, 0, 0.2);
  }

  .site-header {
    background: rgba(23, 34, 31, 0.94);
  }

  .brand-mark,
  .note-stamp,
  .promise-icon {
    color: #182824;
  }

  .button-primary {
    color: #182824;
  }

  select {
    background-color: #1d2c27;
    color: var(--white);
  }

  .article-slot {
    background: rgba(29, 44, 39, 0.58);
  }
}

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

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

/* Reader-facing article pages share the homepage system. */
.article-shell {
  padding-top: 72px;
  padding-bottom: 110px;
}

.article-document {
  max-width: 1120px;
  margin-inline: auto;
}

.article-header {
  max-width: 900px;
  padding-bottom: 55px;
  border-bottom: 1px solid var(--line-dark);
}

.article-header h1 {
  max-width: 880px;
  margin: 21px 0 24px;
  font-size: clamp(2.75rem, 6vw, 5.6rem);
  font-weight: 900;
  letter-spacing: -0.075em;
  line-height: 1.08;
  overflow-wrap: anywhere;
}

.article-dek {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.8vw, 1.28rem);
  line-height: 1.85;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 25px;
  margin-top: 27px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 750;
}

.article-meta span + span {
  position: relative;
  padding-left: 25px;
}

.article-meta span + span::before {
  position: absolute;
  top: 0.42em;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--coral);
  content: "";
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(250px, 0.34fr);
  gap: clamp(40px, 7vw, 100px);
  align-items: start;
  margin-top: 58px;
}

.article-copy {
  max-width: 760px;
  min-width: 0;
}

.article-copy > p,
.article-copy > ul,
.article-copy > ol,
.article-copy > section,
.article-copy > .article-callout {
  font-size: 1rem;
}

.article-copy > p {
  margin: 0 0 22px;
  line-height: 1.95;
}

.article-copy h2,
.article-sources h2 {
  margin: 62px 0 20px;
  font-size: clamp(1.9rem, 3.2vw, 2.75rem);
  font-weight: 900;
  letter-spacing: -0.055em;
  line-height: 1.2;
  overflow-wrap: anywhere;
}

.article-copy h2:first-child {
  margin-top: 0;
}

.article-copy h3 {
  margin: 0 0 8px;
  font-size: 1.2rem;
  letter-spacing: -0.025em;
  line-height: 1.4;
}

.article-copy sup {
  margin-left: 2px;
  font-size: 0.68em;
  line-height: 0;
}

.article-copy sup a {
  color: var(--lime-dark);
  font-weight: 850;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-callout {
  margin: 36px 0 42px;
  padding: 22px 24px;
  border-left: 5px solid var(--coral);
  background: var(--paper-deep);
}

.article-callout strong {
  display: block;
  margin-bottom: 5px;
  font-size: 1.05rem;
}

.article-callout p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.article-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line-dark);
  background: var(--card);
}

.article-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  font-size: 0.86rem;
  line-height: 1.7;
}

.article-table th,
.article-table td {
  padding: 16px 15px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.article-table thead th {
  background: var(--night);
  color: var(--white);
  font-size: 0.76rem;
  letter-spacing: 0.03em;
}

.article-table tbody tr:last-child th,
.article-table tbody tr:last-child td {
  border-bottom: 0;
}

.article-table tbody th {
  width: 125px;
  color: var(--ink);
  font-size: 0.92rem;
}

.article-caption {
  margin-top: 10px !important;
  color: var(--muted);
  font-size: 0.75rem !important;
  line-height: 1.6 !important;
}

.article-steps,
.article-numbered-list {
  display: grid;
  gap: 0;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
  counter-reset: article-step;
}

.article-steps li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 15px;
  padding: 19px 0;
  border-top: 1px solid var(--line);
  counter-increment: article-step;
}

.article-steps li::before {
  color: var(--coral);
  content: "0" counter(article-step);
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.article-step-copy {
  min-width: 0;
}

.article-steps strong,
.article-steps .article-step-copy > span {
  display: block;
}

.article-steps .article-step-copy > span {
  margin-top: 3px;
  color: var(--muted);
  line-height: 1.8;
}

.article-bullets {
  display: grid;
  gap: 12px;
  margin: 0 0 26px;
  padding-left: 22px;
}

.article-bullets li {
  padding-left: 4px;
  line-height: 1.85;
}

.article-bullets li::marker {
  color: var(--coral);
}

.article-note {
  margin-top: 57px;
  padding-top: 5px;
  border-top: 1px solid var(--line-dark);
}

.article-note h2 {
  margin-top: 28px;
  font-size: 1.65rem;
}

.article-option {
  display: grid;
  grid-template-columns: 43px 1fr;
  gap: 15px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.article-option:last-of-type {
  border-bottom: 1px solid var(--line);
}

.option-number {
  margin: 3px 0 0;
  color: var(--coral);
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.article-option p:not(.option-number) {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.article-checklist {
  display: grid;
  gap: 0;
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
}

.article-checklist li {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 12px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  line-height: 1.8;
}

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

.check-box {
  width: 15px;
  height: 15px;
  margin-top: 6px;
  border: 1.5px solid var(--ink);
  background: var(--lime);
}

.article-checklist strong {
  font-weight: 850;
}

.article-checklist p {
  margin: 3px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.article-numbered-list {
  gap: 9px;
  padding-left: 25px;
  list-style: decimal;
  counter-reset: none;
}

.article-numbered-list li {
  padding-left: 5px;
  line-height: 1.75;
}

.article-numbered-list li::marker {
  color: var(--coral);
  font-weight: 850;
}

.article-aside {
  position: sticky;
  top: 28px;
  min-width: 0;
}

.article-aside-card {
  padding: 27px 25px 24px;
  border: 1px solid var(--ink);
  background: var(--lime);
  box-shadow: 7px 7px 0 var(--ink);
}

.article-aside-card.accent-coral {
  background: var(--coral);
}

.article-aside-card.accent-sky {
  background: var(--sky);
}

.article-aside-card h2 {
  margin: 18px 0 14px;
  font-size: 1.7rem;
  letter-spacing: -0.055em;
  line-height: 1.25;
}

.article-aside-card ol {
  display: grid;
  gap: 9px;
  margin: 0;
  padding-left: 21px;
  font-size: 0.87rem;
  line-height: 1.65;
}

.article-aside-card > p:not(.disclosure-label) {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.75;
}

.article-aside-card .aside-emphasis {
  margin-top: 17px !important;
  padding-top: 15px;
  border-top: 1px solid rgba(24, 40, 36, 0.28);
  font-weight: 850;
}

.article-related {
  display: grid;
  gap: 0;
  margin-top: 48px;
  border-top: 1px solid var(--line-dark);
}

.article-related h2 {
  margin: 19px 0 7px;
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.article-related a {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: 0.86rem;
  font-weight: 750;
  line-height: 1.55;
}

.article-related a span,
.article-read span {
  color: var(--coral);
}

.article-sources {
  margin-top: 78px;
  padding-top: 25px;
  border-top: 1px solid var(--line-dark);
}

.article-sources h2 {
  margin-top: 16px;
  margin-bottom: 23px;
  font-size: clamp(1.7rem, 3vw, 2.3rem);
}

.source-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.source-list li {
  display: grid;
  grid-template-columns: minmax(250px, 0.7fr) minmax(0, 1fr);
  gap: 22px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.source-list a {
  color: var(--ink);
  font-size: 0.87rem;
  font-weight: 800;
  line-height: 1.55;
  text-decoration: underline;
  text-decoration-color: var(--line-dark);
  text-underline-offset: 4px;
}

.source-list a span {
  color: var(--coral);
  text-decoration: none;
}

.source-list li > span {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.65;
}

.article-source-note {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.7;
}

.article-end {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 22px;
  margin-top: 45px;
}

.article-end .button {
  min-height: 45px;
}

.article-card-link {
  display: flex;
  flex: 1;
  flex-direction: column;
  color: var(--ink);
}

.article-card-link:hover {
  color: var(--ink);
}

.article-slot {
  min-height: 350px;
  padding: 0;
  overflow: hidden;
  border-style: solid;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.article-card-link {
  padding: 23px 23px 21px;
}

.article-card-link:hover,
.article-card-link:focus-visible {
  color: var(--ink);
}

.article-slot:has(.article-card-link:hover),
.article-slot:has(.article-card-link:focus-visible) {
  border-color: var(--ink);
  box-shadow: var(--shadow-small);
  transform: translateY(-3px);
}

.article-slot h3 {
  margin: 41px 0 12px;
  font-size: 1.42rem;
  line-height: 1.35;
}

.article-read {
  display: block;
  margin-top: auto;
  padding-top: 25px;
  color: var(--ink);
  font-size: 0.8rem;
  font-weight: 850;
  text-decoration: underline;
  text-decoration-color: var(--line-dark);
  text-underline-offset: 4px;
}

@media (max-width: 900px) {
  .article-layout {
    grid-template-columns: minmax(0, 1fr) minmax(225px, 0.38fr);
    gap: 38px;
  }

  .article-aside {
    position: static;
  }

  .source-list li {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}

@media (max-width: 768px) {
  .article-shell {
    padding-top: 52px;
    padding-bottom: 78px;
  }

  .article-header {
    padding-bottom: 39px;
  }

  .article-header h1 {
    font-size: clamp(2.45rem, 9.5vw, 4.5rem);
    line-height: 1.12;
  }

  .article-layout {
    grid-template-columns: 1fr;
    gap: 45px;
    margin-top: 42px;
  }

  .article-copy {
    max-width: none;
  }

  .article-aside {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 28px;
    align-items: start;
  }

  .article-related {
    margin-top: 0;
  }

  .article-grid {
    margin-top: 38px;
  }
}

@media (max-width: 520px) {
  .article-shell {
    padding-top: 40px;
  }

  .article-header h1 {
    margin-top: 17px;
    font-size: clamp(2.15rem, 11vw, 3.35rem);
    letter-spacing: -0.065em;
  }

  .article-dek {
    font-size: 0.98rem;
    line-height: 1.8;
  }

  .article-meta {
    display: grid;
    gap: 9px;
  }

  .article-meta span + span {
    padding-left: 0;
  }

  .article-meta span + span::before {
    display: none;
  }

  .article-copy > p,
  .article-copy > ul,
  .article-copy > ol,
  .article-copy > section,
  .article-copy > .article-callout {
    font-size: 0.96rem;
  }

  .article-copy h2,
  .article-sources h2 {
    margin-top: 48px;
    font-size: 1.85rem;
  }

  .article-callout {
    margin: 28px 0 35px;
    padding: 19px 17px;
  }

  .article-table {
    min-width: 620px;
  }

  .article-steps li {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 10px;
  }

  .article-option {
    grid-template-columns: 35px 1fr;
    gap: 10px;
  }

  .article-aside {
    display: block;
  }

  .article-related {
    margin-top: 42px;
  }

  .article-slot {
    min-height: 0;
  }

  .article-card-link {
    padding: 19px;
  }

  .article-slot h3 {
    margin-top: 28px;
    font-size: 1.33rem;
  }
}

/* The quick-choice card keeps its label and answer in one flexible column. */
.quick-choice-list > div {
  grid-template-columns: 39px minmax(0, 1fr);
  align-items: start;
  min-height: 0;
  padding: 10px 0;
}

.quick-choice-list > div > span:last-child,
.quick-choice-list strong,
.quick-choice-list small {
  display: block;
  min-width: 0;
}

.quick-choice-list strong {
  font-size: 0.78rem;
  line-height: 1.45;
}

.quick-choice-list small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.69rem;
  line-height: 1.5;
}

@media (max-width: 480px) {
  .quick-choice-list > div {
    grid-template-columns: 31px minmax(0, 1fr);
    gap: 9px;
  }

  .quick-choice-list strong {
    font-size: 0.74rem;
  }

  .quick-choice-list small {
    font-size: 0.66rem;
  }
}