.page-faq {
  --kb-gap: clamp(18px, 3vw, 34px);
  --kb-pad: clamp(18px, 3vw, 32px);
  display: block;
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 240, 206, 0.35);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq a:hover,
.page-faq a:focus-visible {
  color: var(--white);
  border-bottom-color: var(--orange);
}

/* ---------- hero ---------- */
.page-faq .kb-hero {
  padding: clamp(18px, 3.5vw, 40px) 0 clamp(20px, 3.5vw, 40px);
}

.page-faq .kb-hero .breadcrumb {
  margin-bottom: clamp(14px, 2vw, 22px);
}

.page-faq .kb-hero-frame {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border: var(--bw) solid var(--line);
  background:
    linear-gradient(135deg, rgba(43, 240, 206, 0.07), transparent 46%),
    linear-gradient(315deg, rgba(255, 106, 43, 0.07), transparent 40%),
    var(--panel-soft);
  box-shadow: var(--shadow-hard);
}

.page-faq .kb-hero-frame::before,
.page-faq .kb-hero-frame::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  pointer-events: none;
}

.page-faq .kb-hero-frame::before {
  top: -2px;
  left: -2px;
  border-top: var(--bw) solid var(--cyan);
  border-left: var(--bw) solid var(--cyan);
}

.page-faq .kb-hero-frame::after {
  right: -2px;
  bottom: -2px;
  border-right: var(--bw) solid var(--orange);
  border-bottom: var(--bw) solid var(--orange);
}

.page-faq .kb-rail {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 24px 8px;
  border-right: var(--bw) solid var(--line);
  background: rgba(7, 11, 28, 0.55);
}

.page-faq .kb-rail .rail-label {
  writing-mode: vertical-rl;
  font-family: var(--mono-font);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--mist);
}

.page-faq .kb-rail .rail-mono {
  font-family: var(--mono-font);
  font-size: 20px;
  color: var(--orange);
}

.page-faq .kb-hero-body {
  padding: var(--kb-pad);
}

.page-faq .kb-hero-body h1 {
  margin: 12px 0 18px;
  font-family: var(--head-font);
  font-weight: 900;
  font-size: clamp(25px, 5vw, 50px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .kb-hero-lead {
  max-width: 60ch;
  color: var(--mist);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
}

.page-faq .kb-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .kb-jump a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  background: rgba(15, 24, 52, 0.9);
  color: var(--white);
  font-size: 14px;
  border-bottom: 1px solid var(--line);
}

.page-faq .kb-jump a:hover,
.page-faq .kb-jump a:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-faq .kb-jump-num {
  font-family: var(--mono-font);
  font-size: 12px;
  color: var(--orange);
}

/* ---------- flow svg ---------- */
.page-faq .kb-flow-wrap {
  margin-top: clamp(18px, 2.5vw, 28px);
  padding: 18px 16px;
  border: var(--bw) solid var(--line);
  background: var(--panel);
  overflow-x: auto;
}

.page-faq .kb-flow {
  display: block;
  width: 100%;
  min-width: 620px;
  height: auto;
}

.page-faq .kb-flow rect {
  fill: var(--panel-soft);
  stroke: var(--line);
  stroke-width: 2;
}

.page-faq .kb-flow text {
  fill: var(--mist);
  font-family: var(--mono-font);
  font-size: 14px;
}

.page-faq .kb-flow-lines line {
  stroke: var(--line);
  stroke-width: 2;
  stroke-dasharray: 6 6;
}

.page-faq .kb-flow-node--end rect {
  stroke: var(--orange);
  fill: rgba(255, 106, 43, 0.1);
}

.page-faq .kb-flow-node--end text {
  fill: var(--orange);
}

/* ---------- layout & toc ---------- */
.page-faq .kb-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--kb-gap);
  margin-top: clamp(24px, 4vw, 48px);
}

.page-faq .kb-toc .toc-title {
  margin: 0 0 12px;
  font-family: var(--mono-font);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--mist);
}

.page-faq .kb-toc .toc-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
}

.page-faq .kb-toc .toc-list li {
  flex: 0 0 auto;
}

.page-faq .kb-toc .toc-link {
  display: block;
  padding: 9px 12px;
  border: 1px solid var(--line);
  color: var(--mist);
  font-family: var(--mono-font);
  font-size: 13px;
  white-space: nowrap;
  border-bottom: 1px solid var(--line);
}

.page-faq .kb-toc .toc-link:hover,
.page-faq .kb-toc .toc-link:focus-visible,
.page-faq .kb-toc .toc-link[aria-current="true"] {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(43, 240, 206, 0.07);
}

/* ---------- sections ---------- */
.page-faq .kb-section {
  padding: clamp(26px, 4vw, 48px) 0;
  border-top: var(--bw) solid var(--line-soft);
}

.page-faq .kb-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .kb-section-head h2 {
  margin: 8px 0 14px;
  font-family: var(--head-font);
  font-weight: 900;
  font-size: clamp(21px, 3vw, 33px);
  line-height: 1.22;
  color: var(--white);
}

.page-faq .kb-section-lead {
  max-width: 62ch;
  color: var(--mist);
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.8;
}

.page-faq .kb-section-lead a {
  color: var(--cyan);
}

/* ---------- figures ---------- */
.page-faq .kb-figure {
  margin: clamp(18px, 2.5vw, 28px) 0;
}

.page-faq .kb-figure .media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: var(--bw) solid var(--line);
  background: var(--panel-soft);
}

.page-faq .kb-figure .media-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-faq .kb-figure figcaption {
  margin-top: 10px;
  font-family: var(--mono-font);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- steps accordion ---------- */
.page-faq .kb-steps {
  margin-top: clamp(16px, 2.5vw, 24px);
}

.page-faq .kb-step {
  border: var(--bw) solid var(--line);
  border-left-width: 6px;
  background: var(--panel);
  margin-bottom: 12px;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-faq .kb-step[open] {
  border-left-color: var(--cyan);
  box-shadow: var(--shadow-hard);
}

.page-faq .kb-step > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.page-faq .kb-step > summary::-webkit-details-marker {
  display: none;
}

.page-faq .kb-step > summary::after {
  content: "+";
  font-family: var(--mono-font);
  font-size: 20px;
  line-height: 1;
  color: var(--mist);
}

.page-faq .kb-step[open] > summary::after {
  content: "\2212";
  color: var(--cyan);
}

.page-faq .kb-step > summary:hover .kb-step-title,
.page-faq .kb-step > summary:focus-visible .kb-step-title {
  color: var(--cyan);
}

.page-faq .kb-step-num {
  font-family: var(--mono-font);
  font-size: 19px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.04em;
}

.page-faq .kb-step-title {
  font-family: var(--head-font);
  font-weight: 700;
  font-size: clamp(15px, 1.6vw, 17.5px);
  line-height: 1.45;
  color: var(--white);
  transition: color 0.2s var(--ease);
}

.page-faq .kb-step-body {
  padding: 6px 18px 20px;
  border-top: 1px dashed var(--line-soft);
  margin-top: 2px;
  color: var(--mist);
  font-size: 15.5px;
  line-height: 1.8;
}

.page-faq .kb-step-body p {
  margin: 12px 0 0;
}

.page-faq .kb-step-body a {
  color: var(--cyan);
}

.page-faq .kb-hint {
  padding: 12px 14px;
  background: rgba(43, 240, 206, 0.07);
  border-left: 3px solid var(--cyan);
  color: var(--white);
  font-size: 14.5px;
  line-height: 1.75;
}

.page-faq .kb-hint strong {
  display: block;
  margin-bottom: 4px;
  font-family: var(--mono-font);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  font-weight: 500;
}

/* ---------- table ---------- */
.page-faq .kb-table-scroll {
  margin-top: clamp(16px, 2.5vw, 24px);
  border: var(--bw) solid var(--line);
  background: var(--panel);
  overflow-x: auto;
}

.page-faq .kb-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 15px;
}

.page-faq .kb-table-caption {
  caption-side: top;
  padding: 14px 16px 6px;
  text-align: left;
  font-family: var(--mono-font);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-faq .kb-table th,
.page-faq .kb-table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: middle;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .kb-table thead th {
  font-family: var(--mono-font);
  font-size: 12px;
  letter-spacing: 0.12em;
  font-weight: 500;
  color: var(--mist);
  background: var(--panel-soft);
}

.page-faq .kb-table tbody td {
  color: var(--white);
  line-height: 1.6;
}

.page-faq .kb-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .kb-table .chip {
  white-space: nowrap;
}

.page-faq .kb-note {
  margin-top: clamp(16px, 2.5vw, 22px);
  padding: clamp(16px, 2.5vw, 24px);
  border: var(--bw) solid var(--line);
  border-right: 6px solid var(--orange);
  background: var(--panel-soft);
  color: var(--mist);
  font-size: 15.5px;
  line-height: 1.8;
}

.page-faq .kb-note-title {
  margin: 0 0 8px;
  font-family: var(--head-font);
  font-weight: 800;
  font-size: 17px;
  color: var(--white);
}

/* ---------- checklist ---------- */
.page-faq .kb-checklist {
  margin: clamp(16px, 2.5vw, 24px) 0 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-faq .kb-checklist li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .kb-checklist li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .kb-check-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: var(--bw) solid var(--line);
  border-radius: 50%;
  font-family: var(--mono-font);
  font-size: 14px;
  color: var(--cyan);
  flex: 0 0 auto;
}

.page-faq .kb-checklist h3 {
  margin: 4px 0 6px;
  font-family: var(--head-font);
  font-weight: 700;
  font-size: 16.5px;
  line-height: 1.45;
  color: var(--white);
}

.page-faq .kb-checklist p {
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .kb-inline-note {
  margin-top: clamp(16px, 2.5vw, 22px);
  padding-left: 14px;
  border-left: 3px solid var(--purple);
  color: var(--mist);
  font-size: 15px;
  line-height: 1.78;
}

/* ---------- cases ---------- */
.page-faq .kb-cases {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: clamp(16px, 2.5vw, 24px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .kb-case {
  padding: clamp(16px, 2.5vw, 24px);
  border: var(--bw) solid var(--line);
  background: var(--panel);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .kb-case:hover,
.page-faq .kb-case:focus-within {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-faq .kb-case h3 {
  margin: 12px 0 8px;
  font-family: var(--head-font);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.4;
  color: var(--white);
}

.page-faq .kb-case p {
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- ops ---------- */
.page-faq .kb-ops {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: clamp(16px, 2.5vw, 24px);
}

.page-faq .kb-op {
  padding: clamp(16px, 2.5vw, 22px);
  border: var(--bw) solid var(--line);
  border-top: 6px solid var(--cyan);
  background: var(--panel-soft);
}

.page-faq .kb-op-title {
  margin: 0 0 12px;
  font-family: var(--head-font);
  font-weight: 800;
  font-size: 17px;
  color: var(--white);
}

.page-faq .kb-op-list {
  margin: 0;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 8px 14px;
}

.page-faq .kb-op-list dt {
  font-family: var(--mono-font);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange);
  padding-top: 3px;
}

.page-faq .kb-op-list dd {
  margin: 0;
  color: var(--mist);
  font-size: 14.8px;
  line-height: 1.75;
}

/* ---------- support ---------- */
.page-faq .kb-section--support {
  border-top: var(--bw) solid var(--line);
}

.page-faq .kb-support-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: clamp(16px, 2.5vw, 24px);
}

.page-faq .kb-support-col {
  padding: clamp(16px, 2.5vw, 26px);
  border: var(--bw) solid var(--line);
  background: var(--panel-soft);
}

.page-faq .kb-support-col--contact {
  background:
    linear-gradient(140deg, rgba(255, 106, 43, 0.1), transparent 60%),
    var(--panel);
  border-color: var(--line);
}

.page-faq .kb-support-col h3 {
  margin: 0 0 14px;
  font-family: var(--head-font);
  font-weight: 800;
  font-size: 17px;
  color: var(--white);
}

.page-faq .kb-support-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .kb-support-list li {
  position: relative;
  padding: 8px 0 8px 22px;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.72;
  border-bottom: 1px dashed var(--line-soft);
}

.page-faq .kb-support-list li:last-child {
  border-bottom: 0;
}

.page-faq .kb-support-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 17px;
  width: 8px;
  height: 8px;
  background: var(--cyan);
}

.page-faq .kb-contact-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .kb-contact-list li {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line-soft);
  align-items: baseline;
}

.page-faq .kb-contact-list li:last-child {
  border-bottom: 0;
}

.page-faq .kb-contact-label {
  font-family: var(--mono-font);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-faq .kb-contact-value {
  color: var(--white);
  font-size: 15px;
  line-height: 1.65;
  word-break: break-word;
}

.page-faq .kb-support-note {
  margin: 14px 0 0;
  padding-left: 12px;
  border-left: 3px solid var(--purple);
  color: var(--mist);
  font-size: 14px;
  line-height: 1.75;
}

/* ---------- responsive ---------- */
@media (min-width: 700px) {
  .page-faq .kb-cases,
  .page-faq .kb-ops {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .kb-support-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .kb-step-body {
    padding-left: 62px;
  }
}

@media (min-width: 880px) {
  .page-faq .kb-hero-frame {
    grid-template-columns: 68px minmax(0, 1fr);
  }

  .page-faq .kb-rail {
    display: flex;
  }
}

@media (min-width: 1000px) {
  .page-faq .kb-layout {
    grid-template-columns: 218px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 60px);
    align-items: start;
  }

  .page-faq .kb-toc {
    position: sticky;
    top: 128px;
  }

  .page-faq .kb-toc .toc-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .kb-toc .toc-link {
    border: 0;
    border-left: 2px solid var(--line);
    padding: 11px 0 11px 14px;
    white-space: normal;
    line-height: 1.5;
  }

  .page-faq .kb-toc .toc-link:hover,
  .page-faq .kb-toc .toc-link:focus-visible,
  .page-faq .kb-toc .toc-link[aria-current="true"] {
    border-left-color: var(--cyan);
    background: transparent;
  }

  .page-faq .kb-ops {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .page-faq .kb-step > summary {
    gap: 10px;
    padding: 14px;
  }

  .page-faq .kb-step-num {
    font-size: 16px;
  }

  .page-faq .kb-checklist li {
    gap: 10px;
  }

  .page-faq .kb-check-num {
    width: 28px;
    height: 28px;
    font-size: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .kb-case,
  .page-faq .kb-step,
  .page-faq a {
    transition: none;
  }

  .page-faq .kb-case:hover,
  .page-faq .kb-case:focus-within {
    transform: none;
  }
}