.page-faq {
  --faq-accent: var(--cyan);
  --faq-ink-soft: rgba(152, 162, 192, 0.35);
  --faq-shadow: 0 18px 48px rgba(3, 7, 20, 0.42);
  background: var(--ink);
  color: var(--text);
  padding-top: calc(var(--header-h) + clamp(24px, 5vw, 60px));
  padding-bottom: clamp(48px, 8vw, 104px);
  overflow-x: hidden;
}

.page-faq .tut-hero {
  position: relative;
}

.page-faq .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 32px);
}

.page-faq .tut-hero-grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  align-items: start;
}

.page-faq .tut-kicker {
  display: inline-block;
  margin: 0 0 14px;
  padding-left: 10px;
  border-left: 2px solid var(--orange);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq h1 {
  margin: 0 0 18px;
  font-size: clamp(30px, 6.4vw, 52px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .tut-hero-copy .prose-lead {
  max-width: 620px;
  margin: 0 0 16px;
}

.page-faq .tut-hero-note {
  max-width: 600px;
  margin: 0 0 26px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .tut-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .tut-scan {
  position: relative;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  background: linear-gradient(160deg, var(--panel) 0%, var(--panel-soft) 100%);
  box-shadow: var(--faq-shadow);
  overflow: hidden;
}

.page-faq .tut-scan::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
}

.page-faq .tut-scan-title {
  margin: 0 0 16px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-faq .tut-scan-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .tut-scan-list li {
  display: grid;
  grid-template-columns: minmax(58px, auto) minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding-top: 14px;
  border-top: 1px solid var(--hair);
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .tut-scan-list li:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .tut-scan-num {
  font-size: 20px;
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: -0.01em;
}

.page-faq .tut-jump {
  display: flex;
  gap: 8px;
  margin-top: clamp(26px, 4vw, 44px);
  padding-bottom: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .tut-jump::-webkit-scrollbar {
  display: none;
}

.page-faq .tut-jump-link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-faq .tut-jump-link .mono {
  font-size: 11px;
  color: var(--cyan);
}

.page-faq .tut-jump-link:hover,
.page-faq .tut-jump-link:focus-visible {
  border-color: rgba(53, 214, 232, 0.5);
  background: rgba(53, 214, 232, 0.07);
  color: var(--text);
}

.page-faq .tut-head {
  max-width: 720px;
  margin-bottom: clamp(20px, 3.5vw, 34px);
}

.page-faq .tut-head h2 {
  margin: 8px 0 14px;
  font-size: clamp(23px, 4.2vw, 36px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .tut-head .prose {
  margin: 0;
  color: var(--muted);
}

.page-faq .step-grid {
  display: grid;
  gap: 14px;
}

.page-faq .step-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: clamp(16px, 2.4vw, 22px);
  border: 1px solid rgba(27, 32, 51, 0.08);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--paper-ink);
  transition: transform 0.3s var(--ease);
}

.page-faq .step-card-id {
  align-self: start;
  padding: 3px 8px;
  border-radius: var(--radius);
  background: var(--paper-shade);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--orange);
}

.page-faq .step-card-body h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--paper-ink);
}

.page-faq .step-card-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-muted);
}

.page-faq .step-stack {
  display: grid;
  gap: 10px;
}

.page-faq .step-fold {
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
  transition: border-color 0.25s var(--ease);
}

.page-faq .step-fold[open] {
  border-color: var(--hair-strong);
}

.page-faq .step-fold summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 16px clamp(16px, 2.4vw, 22px);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .step-fold[open] summary {
  border-bottom: 1px solid var(--hair);
}

.page-faq .step-fold-id {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .step-fold-title {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
}

.page-faq .step-fold-mark {
  font-size: 16px;
  color: var(--muted);
  transition: transform 0.25s var(--ease), color 0.25s var(--ease);
}

.page-faq .step-fold[open] .step-fold-mark {
  transform: rotate(45deg);
  color: var(--orange);
}

.page-faq .step-fold-body {
  padding: 14px clamp(16px, 2.4vw, 22px) 18px;
}

.page-faq .step-fold-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .ver-panel {
  display: grid;
  gap: 18px;
  align-items: center;
  margin-bottom: clamp(18px, 3vw, 28px);
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  background: linear-gradient(120deg, rgba(53, 214, 232, 0.09) 0%, rgba(58, 107, 255, 0.05) 55%, transparent 100%);
}

.page-faq .ver-panel-title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .ver-panel-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .ver-panel .ver-chip {
  justify-self: start;
}

.page-faq .dev-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.page-faq .dev-card {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: clamp(16px, 2.4vw, 22px);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  background: var(--panel-soft);
}

.page-faq .dev-name {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  margin: 0;
  font-size: 17px;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .dev-tag {
  padding: 1px 6px;
  border: 1px solid rgba(53, 214, 232, 0.35);
  border-radius: 2px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .dev-req {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-faq .dev-step {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
  opacity: 0.86;
}

.page-faq .figure {
  margin: 0 0 clamp(20px, 3.5vw, 32px);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  background: var(--panel-soft);
  overflow: hidden;
}

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

.page-faq .figure .figure-cap {
  padding: 12px clamp(14px, 2.4vw, 20px);
  border-top: 1px solid var(--hair);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .resume-steps {
  margin-top: 4px;
}

.page-faq .path-wrap {
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  background: var(--panel-soft);
  overflow: hidden;
}

.page-faq .path-head,
.page-faq .path-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 74px 74px;
  gap: 10px;
  align-items: center;
  padding: 14px clamp(14px, 2.4vw, 20px);
}

.page-faq .path-head {
  background: rgba(53, 214, 232, 0.06);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-faq .path-head > span:not(:first-child) {
  text-align: center;
}

.page-faq .path-row {
  border-top: 1px solid var(--hair);
}

.page-faq .path-goal {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
}

.page-faq .path-num {
  display: block;
  text-align: center;
  font-size: 16px;
  font-weight: 600;
}

.page-faq .path-num--old {
  color: var(--faq-ink-soft);
  filter: brightness(1.6);
}

.page-faq .path-num--new {
  color: var(--orange);
}

.page-faq .path-figure {
  margin-top: clamp(20px, 3.5vw, 32px);
  margin-bottom: 0;
}

.page-faq .quad-grid {
  display: grid;
  gap: 12px;
}

.page-faq .quad {
  border: 1px solid var(--hair);
  border-left: 2px solid var(--quad-accent, var(--cyan));
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
}

.page-faq .quad--a { --quad-accent: var(--cyan); }
.page-faq .quad--b { --quad-accent: var(--blue); }
.page-faq .quad--c { --quad-accent: var(--amber); }
.page-faq .quad--d { --quad-accent: var(--green); }

.page-faq .quad-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 16px clamp(16px, 2.4vw, 20px);
  cursor: pointer;
  list-style: none;
}

.page-faq .quad-head::-webkit-details-marker {
  display: none;
}

.page-faq .quad-id {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 2px;
  background: var(--quad-accent);
  color: var(--ink-deep);
  font-size: 12px;
  font-weight: 700;
}

.page-faq .quad-title {
  font-size: 16px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .quad-mark {
  font-size: 16px;
  color: var(--muted);
  transition: transform 0.25s var(--ease), color 0.25s var(--ease);
}

.page-faq .quad[open] .quad-mark {
  transform: rotate(45deg);
  color: var(--quad-accent);
}

.page-faq .quad-body {
  padding: 0 clamp(16px, 2.4vw, 20px) 18px;
  border-top: 1px solid var(--hair);
  padding-top: 14px;
}

.page-faq .quad-cause {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .quad-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .quad-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
  opacity: 0.86;
}

.page-faq .quad-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--quad-accent, var(--cyan));
}

.page-faq .help-panel {
  display: grid;
  gap: clamp(22px, 3.5vw, 40px);
  padding: clamp(22px, 4vw, 40px);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--paper-ink);
}

.page-faq .help-panel .panel-index {
  color: var(--paper-muted);
}

.page-faq .help-copy h2 {
  margin: 8px 0 14px;
  font-size: clamp(22px, 3.6vw, 32px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--paper-ink);
}

.page-faq .help-copy p {
  max-width: 560px;
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper-muted);
}

.page-faq .help-side {
  display: grid;
  gap: 20px;
}

.page-faq .help-block-title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--paper-muted);
}

.page-faq .help-list {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: help;
}

.page-faq .help-list li {
  position: relative;
  padding-left: 30px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper-ink);
  counter-increment: help;
}

.page-faq .help-list li::before {
  content: counter(help, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.15em;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange);
}

.page-faq .help-channels {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-top: 18px;
  border-top: 1px solid var(--hair-paper);
}

.page-faq .help-channel {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
}

.page-faq .help-channel dt {
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--paper-muted);
}

.page-faq .help-channel dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper-ink);
  word-break: break-word;
}

.page-faq .tut-cross {
  margin-top: clamp(20px, 3vw, 30px);
  padding-top: 18px;
  border-top: 1px solid var(--hair);
}

.page-faq .tut-cross p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .tut-cross a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 214, 232, 0.35);
}

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

@media (min-width: 760px) {
  .page-faq .step-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-faq .ver-panel {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .page-faq .ver-panel .ver-chip {
    justify-self: end;
  }
}

@media (min-width: 900px) {
  .page-faq .tut-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-faq .help-panel {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  }

  .page-faq .help-side {
    padding-left: clamp(20px, 3vw, 36px);
    border-left: 1px solid var(--hair-paper);
  }
}

@media (max-width: 520px) {
  .page-faq .path-head,
  .page-faq .path-row {
    grid-template-columns: minmax(0, 1fr) 62px 62px;
    gap: 8px;
  }

  .page-faq .path-goal {
    font-size: 14px;
  }

  .page-faq .path-num {
    font-size: 14px;
  }

  .page-faq .step-fold summary,
  .page-faq .quad-head {
    gap: 10px;
  }

  .page-faq .help-channel {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step-card,
  .page-faq .step-fold,
  .page-faq .step-fold-mark,
  .page-faq .quad-mark,
  .page-faq .tut-jump-link {
    transition: none;
  }
}