.page-faq {
  --faq-rail: 216px;
  --faq-rail-x: 14px;
  background: var(--paper);
  color: var(--ink);
  padding-bottom: clamp(56px, 8vw, 104px);
}

.page-faq .crumb {
  padding-top: clamp(14px, 2.4vw, 24px);
}

.page-faq .crumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--graphite);
}

.page-faq .crumb-list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--clay);
}

.page-faq .crumb-list a {
  color: var(--graphite);
  text-decoration: none;
}

.page-faq .crumb-list a:hover {
  color: var(--blue);
}

.page-faq .crumb-current {
  color: var(--ink);
  font-weight: 700;
}

/* ---------- hero ---------- */

.page-faq .tut-hero {
  padding: clamp(24px, 4.4vw, 46px) 0 clamp(22px, 3.6vw, 38px);
  border-bottom: 1px solid var(--line);
}

.page-faq .eyebrow {
  margin: 0;
}

.page-faq .tut-hero h1 {
  margin: 16px 0 0;
  max-width: 20ch;
  font-size: var(--fs-h1);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.page-faq .tut-lede {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--graphite);
}

.page-faq .tut-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .tut-quick a {
  display: inline-block;
  padding: 7px 14px;
  border: 1px solid var(--line);
  background: var(--white);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink);
  text-decoration: none;
  transition: border-color var(--dur) ease, color var(--dur) ease, background var(--dur) ease;
}

.page-faq .tut-quick a:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: rgba(26, 92, 255, 0.06);
}

/* ---------- layout ---------- */

.page-faq .tut-layout {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  padding-top: clamp(28px, 4vw, 52px);
}

@media (min-width: 1000px) {
  .page-faq .tut-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- toc ---------- */

.page-faq .toc-head {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--clay);
}

.page-faq .toc-list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .toc-link {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.5;
  color: var(--graphite);
  text-decoration: none;
  transition: background var(--dur) ease, color var(--dur) ease, border-color var(--dur) ease;
}

.page-faq .toc-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--clay);
}

.page-faq .toc-link:hover {
  background: var(--stone);
  color: var(--ink);
}

.page-faq .toc-link[aria-current] {
  border-left-color: var(--blue);
  background: var(--white);
  color: var(--ink);
  font-weight: 700;
}

@media (min-width: 1000px) {
  .page-faq .tut-toc {
    position: sticky;
    top: 104px;
    align-self: start;
  }
}

@media (max-width: 999px) {
  .page-faq .tut-toc {
    border-bottom: 1px solid var(--line-soft);
    padding-bottom: 12px;
  }

  .page-faq .toc-list {
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    gap: 6px;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }

  .page-faq .toc-link {
    border-left: 0;
    border-bottom: 2px solid transparent;
    padding: 8px 12px;
    white-space: nowrap;
  }

  .page-faq .toc-link[aria-current] {
    border-bottom-color: var(--blue);
  }
}

/* ---------- flow & steps ---------- */

.page-faq .tut-flow {
  display: grid;
  gap: clamp(44px, 6vw, 80px);
  min-width: 0;
}

.page-faq .tut-step {
  position: relative;
  padding-left: calc(var(--faq-rail-x) + 20px);
  scroll-margin-top: 112px;
}

.page-faq .tut-step::before {
  content: "";
  position: absolute;
  left: var(--faq-rail-x);
  top: 8px;
  bottom: -28px;
  width: 1px;
  background: linear-gradient(to bottom, rgba(46, 139, 87, 0.55), rgba(46, 139, 87, 0.08));
}

.page-faq .tut-step::after {
  content: "";
  position: absolute;
  left: calc(var(--faq-rail-x) - 4px);
  top: 10px;
  width: 9px;
  height: 9px;
  background: var(--bamboo);
}

.page-faq .tut-step:last-of-type::before,
.page-faq .tut-step:last-of-type::after {
  display: none;
}

.page-faq .step-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
}

.page-faq .step-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-faq .step-title {
  margin: 0;
  font-size: var(--fs-h2);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.page-faq .step-lead {
  margin: 16px 0 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .tut-step > p {
  margin: 14px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--graphite);
}

.page-faq .tut-step > p strong {
  color: var(--ink);
}

.page-faq .step-tail {
  margin-top: 22px !important;
  padding: 16px 18px;
  border-left: 3px solid var(--orange);
  background: var(--white);
  color: var(--ink) !important;
}

/* ---------- svg numbering ---------- */

.page-faq .num-figure {
  margin: 26px 0 0;
  padding: clamp(12px, 2.4vw, 24px);
  border: 1px solid var(--line-soft);
  background: var(--white);
  overflow-x: auto;
}

.page-faq .num-svg {
  display: block;
  width: 100%;
  min-width: 380px;
  height: auto;
}

.page-faq .num-svg text {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  text-anchor: middle;
  fill: var(--ink);
}

.page-faq .num-svg .num-label {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  fill: var(--graphite);
}

.page-faq .num-svg .num-op {
  font-size: 22px;
  fill: var(--silver);
}

.page-faq .num-seg rect {
  opacity: 0.42;
  transition: opacity var(--dur) ease;
}

.page-faq .num-seg:hover rect,
.page-faq .num-seg:focus rect {
  opacity: 1;
}

.page-faq .num-seg:focus {
  outline: none;
}

.page-faq .num-seg--brand rect {
  fill: rgba(26, 92, 255, 0.18);
  stroke: var(--blue);
  stroke-width: 1.5;
}

.page-faq .num-seg--region rect {
  fill: rgba(255, 107, 26, 0.18);
  stroke: var(--orange);
  stroke-width: 1.5;
}

.page-faq .num-seg--year rect {
  fill: rgba(200, 205, 214, 0.5);
  stroke: var(--graphite);
  stroke-width: 1.5;
}

.page-faq .num-seg--serial rect {
  fill: rgba(46, 139, 87, 0.18);
  stroke: var(--bamboo);
  stroke-width: 1.5;
}

/* ---------- segment notes ---------- */

.page-faq .seg-notes {
  display: grid;
  gap: 0;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-soft);
}

.page-faq .seg-notes li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
}

@media (min-width: 720px) {
  .page-faq .seg-notes li {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

.page-faq .seg-key {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--clay);
}

.page-faq .seg-val {
  font-size: 15px;
  line-height: 1.8;
  color: var(--graphite);
}

/* ---------- figure ---------- */

.page-faq .faq-figure {
  margin: 26px 0 0;
  border: 1px solid var(--line-soft);
  background: var(--white);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 11px 16px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--graphite);
}

/* ---------- ordered step list ---------- */

.page-faq .step-list {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: sl;
  display: grid;
  gap: 12px;
  max-width: 66ch;
}

.page-faq .step-list li {
  counter-increment: sl;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 14px 16px 14px 0;
  border-top: 1px solid var(--line-soft);
  font-size: 15px;
  line-height: 1.8;
  color: var(--graphite);
}

.page-faq .step-list li strong {
  color: var(--ink);
}

.page-faq .step-list li::before {
  content: counter(sl, decimal-leading-zero);
  display: block;
  padding: 3px 0;
  background: rgba(26, 92, 255, 0.08);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  text-align: center;
  color: var(--blue);
}

/* ---------- tier bar ---------- */

.page-faq .tier-wrap {
  margin: 26px 0 0;
}

.page-faq .tier-cap {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--graphite);
}

.page-faq .tier-bar {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(120px, 1fr);
  gap: 2px;
  overflow-x: auto;
  padding-bottom: 4px;
  -webkit-overflow-scrolling: touch;
}

.page-faq .tier-seg {
  display: block;
  padding: 16px 14px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink);
  white-space: nowrap;
}

.page-faq .tier-seg b {
  display: block;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-faq .tier-seg--silver {
  background: var(--silver);
}

.page-faq .tier-seg--blue {
  background: rgba(26, 92, 255, 0.16);
  border-bottom: 3px solid var(--blue);
}

.page-faq .tier-seg--orange {
  background: rgba(255, 107, 26, 0.16);
  border-bottom: 3px solid var(--orange);
}

.page-faq .tier-seg--bamboo {
  background: rgba(46, 139, 87, 0.14);
  border-bottom: 3px solid var(--bamboo);
}

/* ---------- check list ---------- */

.page-faq .check-list {
  display: grid;
  gap: 10px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .check-list li {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 14px 16px;
  border: 1px solid var(--line-soft);
  background: var(--white);
  font-size: 15px;
  line-height: 1.78;
  color: var(--graphite);
}

.page-faq .check-list li b {
  color: var(--ink);
}

.page-faq .check-box {
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 4px;
  border: 1px solid var(--blue);
  background: rgba(26, 92, 255, 0.08);
}

.page-faq .check-box::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 1px;
  width: 5px;
  height: 9px;
  border-right: 2px solid var(--bamboo);
  border-bottom: 2px solid var(--bamboo);
  transform: rotate(42deg);
}

/* ---------- faq details ---------- */

.page-faq .faq-group {
  margin-top: 28px;
}

.page-faq .faq-group-title {
  margin: 0 0 6px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-item summary {
  position: relative;
  padding: 16px 46px 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.65;
  color: var(--ink);
}

.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--clay);
}

.page-faq .faq-item[open] summary::after {
  content: "\2212";
}

.page-faq .faq-item summary:hover {
  color: var(--blue);
}

.page-faq .faq-a {
  max-width: 66ch;
  padding: 0 0 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--graphite);
}

/* ---------- glossary ---------- */

.page-faq .gloss-wrap {
  margin: 22px 0 0;
  border: 1px solid var(--line-soft);
  background: var(--white);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .gloss {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
}

.page-faq .gloss th,
.page-faq .gloss td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  font-size: 15px;
  line-height: 1.78;
  color: var(--graphite);
}

.page-faq .gloss thead th {
  border-bottom: 1px solid var(--line);
  background: var(--stone);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink);
}

.page-faq .gloss tbody tr + tr td {
  border-top: 1px solid var(--line-soft);
}

.page-faq .gloss tbody tr:nth-child(even) {
  background: rgba(200, 205, 214, 0.18);
}

.page-faq .gloss td:first-child {
  width: 148px;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--clay);
}

/* ---------- next links ---------- */

.page-faq .tut-next {
  margin-top: clamp(48px, 7vw, 88px);
  padding-top: clamp(24px, 3.4vw, 38px);
  border-top: 2px solid var(--ink);
}

.page-faq .next-title {
  margin: 0 0 18px;
  font-size: var(--fs-h3);
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-faq .next-links {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 760px) {
  .page-faq .next-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-faq .next-links a {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 18px 16px;
  background: var(--white);
  border: 1px solid var(--line-soft);
  text-decoration: none;
  color: var(--graphite);
  transition: border-color var(--dur) ease, transform var(--dur) ease;
}

.page-faq .next-links a:hover {
  border-color: var(--blue);
  transform: translateY(-2px);
}

.page-faq .next-num {
  display: block;
  padding: 2px 0;
  background: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  text-align: center;
  color: var(--paper);
}

.page-faq .next-text {
  font-size: 14.5px;
  line-height: 1.7;
}

.page-faq .next-text b {
  display: block;
  margin-bottom: 2px;
  font-size: 16px;
  color: var(--ink);
}