.page-faq {
  --faq-rail-w: 200px;
  --faq-hair: rgba(22, 64, 90, 0.75);
  --faq-glow: rgba(0, 229, 208, 0.16);
}

.page-faq .breadcrumb-sep {
  margin: 0 6px;
  color: var(--mist);
}

.page-faq .faq-intro {
  padding: 24px 0 28px;
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-intro .eyebrow {
  color: var(--cyan);
  margin-bottom: 14px;
}

.page-faq .faq-intro h1 {
  margin: 0 0 18px;
  font-size: clamp(2rem, 7vw, 4.2rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
  font-weight: 900;
  color: var(--paper);
}

.page-faq .lede {
  max-width: 58ch;
  color: var(--mist);
}

.page-faq .intro-meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 22px 0 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-faq .intro-meta li {
  display: flex;
  align-items: baseline;
  gap: 7px;
  padding: 5px 11px;
  border: 1px solid var(--faq-hair);
  background: var(--abyss-800);
}

.page-faq .meta-num {
  font-size: 16px;
  color: var(--cyan);
  font-weight: 700;
}

/* layout */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding: 28px 0 64px;
}

.page-faq .step-rail {
  border: 1px solid var(--faq-hair);
  background: linear-gradient(160deg, var(--abyss-800), var(--abyss-900));
  padding: 14px 16px 16px;
  min-width: 0;
}

.page-faq .rail-label {
  margin: 0 0 12px;
  color: var(--mist);
}

.page-faq .rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .rail-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid transparent;
  color: var(--mist);
  text-decoration: none;
  white-space: nowrap;
  font-size: 13px;
  transition: color var(--speed) var(--ease), background-color var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.page-faq .rail-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--grid-600);
  transition: color var(--speed) var(--ease);
}

.page-faq .rail-link:hover,
.page-faq .rail-link:focus-visible {
  color: var(--paper);
  border-color: var(--faq-hair);
  background: var(--panel-700);
}

.page-faq .rail-link[aria-current="true"] {
  color: var(--abyss-900);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .rail-link[aria-current="true"] .rail-num {
  color: var(--abyss-900);
}

.page-faq .rail-jump {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--link);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}

.page-faq .rail-jump:hover {
  color: var(--cyan);
}

/* step blocks */
.page-faq .step-flow {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 34px;
}

.page-faq .step-block {
  border-top: 1px solid var(--faq-hair);
  padding-top: 22px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

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

.page-faq .step-index {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 6vw, 3.4rem);
  line-height: 1;
  font-weight: 200;
  color: var(--grid-600);
  flex: none;
}

.page-faq .step-title {
  margin: 0;
  font-size: clamp(1.3rem, 3.6vw, 2rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--paper);
  font-weight: 900;
}

.page-faq .prose {
  max-width: 62ch;
  color: var(--mist);
  margin: 0 0 16px;
}

/* walkthrough */
.page-faq .walkthrough {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin: 20px 0 24px;
}

.page-faq .walk-item {
  position: relative;
  border: 1px solid var(--faq-hair);
  background: var(--abyss-800);
  padding: 16px 16px 18px;
  box-shadow: 6px 6px 0 rgba(12, 44, 66, 0.55);
}

.page-faq .walk-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .walk-title {
  margin: 6px 0 8px;
  font-size: 1.02rem;
  color: var(--paper);
  line-height: 1.35;
}

.page-faq .walk-item p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--mist);
  line-height: 1.7;
}

/* media */
.page-faq .shot {
  margin: 20px 0 0;
}

.page-faq .shot .media-frame {
  border: 1px solid var(--faq-hair);
  background: var(--abyss-800);
  overflow: hidden;
}

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

.page-faq .shot--wide .media-frame {
  aspect-ratio: 3 / 2;
}

.page-faq .shot--wide img {
  height: 100%;
}

.page-faq .media-caption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
  line-height: 1.6;
}

/* platform */
.page-faq .platform-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin: 18px 0;
}

.page-faq .platform-card {
  border: 1px solid var(--faq-hair);
  border-left: 3px solid var(--cyan);
  background: var(--panel-700);
  padding: 14px 16px 16px;
}

.page-faq .platform-card:nth-child(2) { border-left-color: var(--yellow); }
.page-faq .platform-card:nth-child(3) { border-left-color: var(--link); }
.page-faq .platform-card:nth-child(4) { border-left-color: var(--orange); }

.page-faq .platform-card .label {
  margin: 0 0 6px;
  color: var(--paper);
}

.page-faq .platform-card h3 {
  margin: 0 0 6px;
  font-size: 0.98rem;
  color: var(--paper);
  line-height: 1.4;
}

.page-faq .platform-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--mist);
  line-height: 1.68;
}

.page-faq .note-strip {
  border: 1px solid var(--faq-hair);
  border-left: 3px solid var(--yellow);
  background: var(--abyss-800);
  padding: 14px 16px;
}

.page-faq .note-strip p {
  margin: 0;
  color: var(--mist);
  font-size: 0.94rem;
  line-height: 1.75;
}

.page-faq .note-strip strong {
  color: var(--yellow);
  font-weight: 700;
}

/* switch points */
.page-faq .switch-points {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin: 18px 0;
}

.page-faq .switch-point {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 16px;
  border: 1px solid var(--faq-hair);
  background: var(--abyss-800);
}

.page-faq .point-figure {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 5vw, 2.2rem);
  line-height: 1;
  color: var(--cyan);
  font-weight: 700;
  flex: none;
  min-width: 2.6em;
}

.page-faq .switch-point p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--mist);
  line-height: 1.7;
}

/* read order svg */
.page-faq .read-order {
  border: 1px solid var(--faq-hair);
  background: var(--abyss-800);
  padding: 10px;
  margin: 18px 0;
  overflow: hidden;
}

.page-faq .read-order svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .read-list {
  list-style: none;
  margin: 18px 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .read-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 14px 16px;
  border: 1px solid var(--faq-hair);
  background: var(--panel-700);
}

.page-faq .read-num {
  font-family: var(--font-mono);
  font-size: 13px;
  width: 26px;
  height: 26px;
  flex: none;
  display: grid;
  place-items: center;
  border: 1px solid var(--cyan);
  color: var(--cyan);
}

.page-faq .read-list h3 {
  margin: 0 0 5px;
  font-size: 1rem;
  color: var(--paper);
}

.page-faq .read-list p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--mist);
  line-height: 1.7;
}

/* timeline */
.page-faq .timeline {
  border-left: 1px solid var(--faq-hair);
  margin: 18px 0 18px 8px;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-faq .tl-row {
  position: relative;
}

.page-faq .tl-mark {
  position: absolute;
  left: -25px;
  top: 6px;
  width: 10px;
  height: 10px;
  background: var(--yellow);
  border: 1px solid var(--abyss-900);
}

.page-faq .tl-mark--now {
  background: var(--cyan);
  box-shadow: 0 0 0 4px var(--faq-glow);
}

.page-faq .tl-row h3 {
  margin: 0 0 5px;
  font-size: 0.98rem;
  color: var(--paper);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.page-faq .tl-row p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--mist);
  line-height: 1.7;
}

/* contact block */
.page-faq .contact-block {
  border: 1px solid var(--faq-hair);
  background: linear-gradient(140deg, var(--panel-700), var(--abyss-800));
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .contact-block .contact-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--faq-hair);
}

.page-faq .contact-block .contact-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
  min-width: 66px;
}

.page-faq .contact-block .contact-value {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .contact-block .copy-btn {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 6px 12px;
  border: 1px solid var(--grid-600);
  background: transparent;
  color: var(--cyan);
  cursor: pointer;
  transition: background-color var(--speed) var(--ease), color var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.page-faq .contact-block .copy-btn:hover,
.page-faq .contact-block .copy-btn:focus-visible {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--abyss-900);
}

.page-faq .contact-block .copy-btn.is-copied {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--abyss-900);
}

.page-faq .contact-note {
  margin: 0;
  font-size: 0.85rem;
  color: var(--mist);
  line-height: 1.7;
}

/* faq accordion */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 18px;
}

.page-faq .faq-item {
  border: 1px solid var(--faq-hair);
  background: var(--abyss-800);
  transition: border-color var(--speed) var(--ease);
}

.page-faq .faq-item[open] {
  border-color: var(--cyan);
  background: var(--panel-700);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  font-size: 0.96rem;
  line-height: 1.5;
}

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

.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  color: var(--cyan);
  font-size: 1.1rem;
  line-height: 1;
}

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

.page-faq .faq-index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--grid-600);
  padding-top: 4px;
  flex: none;
}

.page-faq .faq-item[open] .faq-index {
  color: var(--cyan);
}

.page-faq .faq-q {
  min-width: 0;
}

.page-faq .faq-a {
  padding: 0 16px 16px 44px;
  border-top: 1px dashed var(--faq-hair);
  margin-top: 0;
  padding-top: 12px;
}

.page-faq .faq-a p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--mist);
  line-height: 1.75;
  max-width: 62ch;
}

/* outro */
.page-faq .step-outro {
  border: 1px solid var(--faq-hair);
  border-top: 3px solid var(--orange);
  background: var(--abyss-800);
  padding: 20px 18px 22px;
}

.page-faq .step-outro h2 {
  margin: 0 0 10px;
  font-size: clamp(1.2rem, 3.4vw, 1.6rem);
  color: var(--paper);
  letter-spacing: -0.01em;
}

.page-faq .step-outro p {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: 0.94rem;
  color: var(--mist);
  line-height: 1.75;
}

.page-faq .outro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* reveal */
.page-faq [data-reveal] {
  opacity: 1;
}

.page-faq.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.24s var(--ease), transform 0.24s var(--ease);
}

.page-faq.has-js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* tablet + desktop */
@media (min-width: 720px) {
  .page-faq .walkthrough {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

  .page-faq .switch-point {
    flex-direction: column;
    gap: 8px;
  }

  .page-faq .read-list li {
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
    padding-top: 40px;
  }

  .page-faq .step-rail {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
    padding: 18px 18px 20px;
  }

  .page-faq .rail-list {
    flex-direction: column;
    overflow-x: visible;
    gap: 2px;
  }

  .page-faq .rail-link {
    width: 100%;
    white-space: normal;
    border-left: 2px solid transparent;
    font-size: 13px;
    padding: 9px 10px 9px 12px;
  }

  .page-faq .rail-link[aria-current="true"] {
    border-left-color: var(--orange);
  }

  .page-faq .walkthrough {
    gap: 14px;
  }

  .page-faq .shot .media-frame {
    max-width: 520px;
  }

  .page-faq .shot--wide .media-frame {
    max-width: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq.has-js [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-faq .rail-link,
  .page-faq .copy-btn,
  .page-faq .faq-item {
    transition: none;
  }
}