.page-faq {
  --faq-glow-blue: rgba(0, 209, 255, 0.14);
  --faq-glow-purple: rgba(139, 92, 246, 0.16);
  --faq-glow-orange: rgba(255, 138, 0, 0.14);
  --faq-glow-green: rgba(0, 229, 160, 0.12);
  --faq-card-radius: 18px;
  background: radial-gradient(1200px 380px at 80% 0%, rgba(0, 209, 255, 0.06), transparent 60%);
  color: var(--text-primary);
}

.page-faq .container {
  padding-top: 28px;
  padding-bottom: 72px;
}

.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 22px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.page-faq .breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-faq .breadcrumb a:hover {
  color: var(--electric-blue);
}

.page-faq .breadcrumb-sep {
  opacity: 0.4;
}

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 30px 22px;
  border: 1px solid var(--line-faint);
  border-radius: 28px;
  background: linear-gradient(135deg, var(--void-navy) 30%, rgba(139, 92, 246, 0.16) 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--electric-blue), var(--ultraviolet), var(--energy-orange), transparent);
  background-size: 200% 100%;
  animation: page-faq-stream 9s linear infinite;
}

@keyframes page-faq-stream {
  to {
    background-position: 200% 0;
  }
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 209, 255, 0.2), transparent 65%);
  top: -150px;
  right: -80px;
  pointer-events: none;
}

.page-faq .faq-hero__meta {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}

.page-faq .faq-hero h1 {
  position: relative;
  z-index: 1;
  margin: 0 0 16px;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.28;
  font-weight: 900;
  letter-spacing: 0.01em;
}

.page-faq .faq-hero__lead {
  position: relative;
  z-index: 1;
  margin: 0 0 24px;
  max-width: 820px;
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.85;
}

.page-faq .faq-hero__chips {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-hero__chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  background: rgba(0, 209, 255, 0.08);
  border: 1px solid rgba(0, 209, 255, 0.28);
  color: var(--text-primary);
  font-size: 0.82rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.2s var(--ease), transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-hero__chip:hover {
  background: rgba(0, 209, 255, 0.16);
  border-color: rgba(0, 209, 255, 0.45);
  transform: translateY(-2px);
}

.page-faq .faq-hero__chip--purple {
  background: rgba(139, 92, 246, 0.1);
  border-color: rgba(139, 92, 246, 0.32);
}

.page-faq .faq-hero__chip--purple:hover {
  background: rgba(139, 92, 246, 0.18);
  border-color: rgba(139, 92, 246, 0.5);
}

.page-faq .faq-hero__chip--orange {
  background: rgba(255, 138, 0, 0.1);
  border-color: rgba(255, 138, 0, 0.3);
}

.page-faq .faq-hero__chip--orange:hover {
  background: rgba(255, 138, 0, 0.18);
  border-color: rgba(255, 138, 0, 0.46);
}

.page-faq .quick-guide {
  margin-top: 56px;
}

.page-faq .quick-guide__panel {
  border-radius: 26px;
  background: linear-gradient(180deg, rgba(21, 27, 54, 0.7), rgba(28, 36, 71, 0.4));
  border: 1px solid var(--line-faint);
  padding: 28px 22px;
}

.page-faq .quick-guide__head {
  margin-bottom: 22px;
}

.page-faq .section-title {
  margin: 0 0 8px;
  font-size: 1.7rem;
  font-weight: 900;
  line-height: 1.3;
}

.page-faq .section-sub {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.94rem;
  line-height: 1.7;
}

.page-faq .quick-guide__tabs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-faq .qg-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-faq .qg-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  background: var(--void-navy);
  border: 1px solid var(--line-faint);
  color: var(--text-secondary);
  font-size: 0.86rem;
  font-weight: 500;
  line-height: 1.2;
  cursor: pointer;
  user-select: none;
  transition: all 0.25s var(--ease);
}

.page-faq .qg-label:hover {
  border-color: rgba(0, 209, 255, 0.4);
  color: var(--text-primary);
}

.page-faq .qg-radio:focus-visible + .qg-label {
  outline: 2px solid var(--electric-blue);
  outline-offset: 2px;
}

.page-faq .qg-radio:checked + .qg-label {
  background: rgba(0, 209, 255, 0.12);
  border-color: rgba(0, 209, 255, 0.55);
  color: var(--text-primary);
  box-shadow: 0 0 22px rgba(0, 209, 255, 0.12);
}

.page-faq .qg-radio:checked + .qg-label--member {
  background: rgba(0, 209, 255, 0.14);
  border-color: rgba(0, 209, 255, 0.55);
  color: var(--text-primary);
  box-shadow: 0 0 22px rgba(0, 209, 255, 0.14);
}

.page-faq .qg-radio:checked + .qg-label--scope {
  background: rgba(139, 92, 246, 0.16);
  border-color: rgba(139, 92, 246, 0.55);
  color: var(--text-primary);
  box-shadow: 0 0 22px rgba(139, 92, 246, 0.16);
}

.page-faq .qg-radio:checked + .qg-label--catalog {
  background: rgba(0, 229, 160, 0.12);
  border-color: rgba(0, 229, 160, 0.5);
  color: var(--text-primary);
  box-shadow: 0 0 22px rgba(0, 229, 160, 0.12);
}

.page-faq .qg-radio:checked + .qg-label--vendor {
  background: rgba(255, 138, 0, 0.14);
  border-color: rgba(255, 138, 0, 0.5);
  color: var(--text-primary);
  box-shadow: 0 0 22px rgba(255, 138, 0, 0.14);
}

.page-faq .quick-guide__board {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 22px;
  width: 100%;
}

.page-faq .faq-card {
  border-radius: var(--faq-card-radius);
  background: rgba(21, 27, 54, 0.85);
  border: 1px solid var(--line-faint);
  overflow: hidden;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-faq .faq-card[open] {
  border-color: rgba(0, 209, 255, 0.35);
  box-shadow: 0 16px 46px rgba(0, 0, 0, 0.28);
}

.page-faq .faq-card__summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px;
  cursor: pointer;
}

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

.page-faq .faq-card__index {
  display: grid;
  place-items: center;
  flex: 0 0 40px;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  background: rgba(0, 209, 255, 0.08);
  color: var(--electric-blue);
}

.page-faq .faq-card__index--green {
  background: rgba(0, 229, 160, 0.1);
  color: var(--signal-green);
}

.page-faq .faq-card__index--purple {
  background: rgba(139, 92, 246, 0.12);
  color: var(--ultraviolet);
}

.page-faq .faq-card__index--orange {
  background: rgba(255, 138, 0, 0.12);
  color: var(--energy-orange);
}

.page-faq .faq-card__title {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.96rem;
  font-weight: 500;
  line-height: 1.55;
  color: var(--text-primary);
}

.page-faq .faq-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-faq .faq-card .tag {
  font-size: 0.7rem;
  padding: 3px 10px;
}

.page-faq .faq-card__icon {
  display: grid;
  place-items: center;
  flex: 0 0 34px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--line-faint);
  color: var(--text-secondary);
  font-size: 1.2rem;
  transition: transform 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-faq .faq-card[open] .faq-card__icon {
  transform: rotate(45deg);
  color: var(--electric-blue);
  border-color: rgba(0, 209, 255, 0.45);
}

.page-faq .faq-card__body {
  padding: 0 20px 20px 74px;
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.85;
}

.page-faq .faq-card__body p {
  margin: 0 0 10px;
}

.page-faq .faq-card__body p:last-child {
  margin-bottom: 0;
}

.page-faq .qg-radio:checked ~ .quick-guide__board .faq-card {
  display: none;
}

.page-faq #faq-all:checked ~ .quick-guide__board .faq-card,
.page-faq #faq-cat-member:checked ~ .quick-guide__board .faq-card[data-cat="member"],
.page-faq #faq-cat-member:checked ~ .quick-guide__board .faq-card[data-cat="device"],
.page-faq #faq-cat-scope:checked ~ .quick-guide__board .faq-card[data-cat="scope"],
.page-faq #faq-cat-scope:checked ~ .quick-guide__board .faq-card[data-cat="device"],
.page-faq #faq-cat-catalog:checked ~ .quick-guide__board .faq-card[data-cat="catalog"],
.page-faq #faq-cat-vendor:checked ~ .quick-guide__board .faq-card[data-cat="vendor"] {
  display: block;
}

.page-faq .faq-visual {
  margin: 48px 0 0;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid var(--line-faint);
}

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

.page-faq .hot-faq {
  margin-top: 56px;
}

.page-faq .hot-faq__head {
  margin-bottom: 22px;
}

.page-faq .hot-faq__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-faq .hot-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px 24px;
  border-radius: 22px;
  background: var(--void-navy);
  border: 1px solid var(--line-faint);
  overflow: hidden;
  text-decoration: none;
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-faq .hot-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--electric-blue);
}

.page-faq .hot-card--purple::before {
  background: var(--ultraviolet);
}

.page-faq .hot-card--orange::before {
  background: var(--energy-orange);
}

.page-faq .hot-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 209, 255, 0.4);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.22);
}

.page-faq .hot-card__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--electric-blue);
  letter-spacing: 0.06em;
}

.page-faq .hot-card--purple .hot-card__num {
  color: var(--ultraviolet);
}

.page-faq .hot-card--orange .hot-card__num {
  color: var(--energy-orange);
}

.page-faq .hot-card h3 {
  margin: 0;
  font-size: 1.1rem;
  line-height: 1.45;
}

.page-faq .hot-card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.65;
}

.page-faq .hot-card__rate {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 6px;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.page-faq .hot-card__bar {
  position: relative;
  display: block;
  width: 70px;
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.page-faq .hot-card__bar i {
  position: absolute;
  inset: 0;
  right: auto;
  background: var(--electric-blue);
  border-radius: inherit;
}

.page-faq .hot-card--purple .hot-card__bar i {
  background: var(--ultraviolet);
}

.page-faq .hot-card--orange .hot-card__bar i {
  background: var(--energy-orange);
}

.page-faq .hot-card__rate-num {
  color: var(--text-primary);
  font-weight: 600;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.page-faq .hot-card__link {
  margin-top: 4px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--electric-blue);
  text-decoration: none;
}

.page-faq .hot-card__link::after {
  content: "→";
}

.page-faq .doc-shelf {
  margin-top: 56px;
}

.page-faq .doc-shelf__head {
  margin-bottom: 18px;
}

.page-faq .doc-shelf__datebar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 18px 0 20px;
}

.page-faq .doc-shelf__datelabel {
  margin-right: 4px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.page-faq .doc-shelf__datechip {
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line-faint);
  color: var(--text-secondary);
  font-size: 0.76rem;
}

.page-faq .doc-shelf__datechip--active {
  background: rgba(0, 209, 255, 0.12);
  border-color: rgba(0, 209, 255, 0.4);
  color: var(--text-primary);
}

.page-faq .doc-shelf__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-faq .doc-shelf__aside {
  padding: 24px;
  border-radius: 20px;
  background: linear-gradient(180deg, var(--void-navy), rgba(21, 27, 54, 0.5));
  border: 1px solid var(--line-faint);
}

.page-faq .doc-shelf__aside h3 {
  margin: 0 0 14px;
  font-size: 0.95rem;
  font-weight: 700;
}

.page-faq .doc-shelf__files {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-faq .doc-shelf__files li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid transparent;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.page-faq .doc-file__code {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 3px 7px;
  border-radius: 7px;
  background: rgba(0, 209, 255, 0.1);
  color: var(--electric-blue);
  white-space: nowrap;
}

.page-faq .doc-shelf__stats {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0;
}

.page-faq .doc-shelf__stats div {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line-faint);
}

.page-faq .doc-shelf__stats div:last-child {
  border-bottom: 0;
}

.page-faq .doc-shelf__stats dt {
  color: var(--text-secondary);
  font-size: 0.82rem;
}

.page-faq .doc-shelf__stats dd {
  margin: 0;
  color: var(--text-primary);
  font-weight: 600;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.page-faq .doc-shelf__board h3 {
  margin: 0 0 16px;
  font-size: 0.95rem;
  font-weight: 700;
}

.page-faq .doc-books {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .doc-book {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 18px 18px 22px;
  border-radius: 16px;
  background: var(--void-navy);
  border: 1px solid var(--line-faint);
  border-left: 4px solid var(--electric-blue);
  overflow: hidden;
}

.page-faq .doc-book--purple {
  border-left-color: var(--ultraviolet);
  background: linear-gradient(90deg, rgba(139, 92, 246, 0.1), var(--void-navy) 60%);
}

.page-faq .doc-book--orange {
  border-left-color: var(--energy-orange);
  background: linear-gradient(90deg, rgba(255, 138, 0, 0.08), var(--void-navy) 60%);
}

.page-faq .doc-book--green {
  border-left-color: var(--signal-green);
  background: linear-gradient(90deg, rgba(0, 229, 160, 0.08), var(--void-navy) 60%);
}

.page-faq .doc-book__code {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--electric-blue);
  letter-spacing: 0.05em;
}

.page-faq .doc-book--purple .doc-book__code {
  color: var(--ultraviolet);
}

.page-faq .doc-book--orange .doc-book__code {
  color: var(--energy-orange);
}

.page-faq .doc-book--green .doc-book__code {
  color: var(--signal-green);
}

.page-faq .doc-book strong {
  font-size: 0.98rem;
  font-weight: 700;
}

.page-faq .doc-book small {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.page-faq .doc-book em {
  font-style: normal;
  align-self: flex-start;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 0.68rem;
  background: rgba(255, 138, 0, 0.14);
  color: var(--energy-orange);
}

.page-faq .doc-shelf__banner {
  margin: 20px 0 0;
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid var(--line-faint);
}

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

.page-faq .tool-station {
  margin-top: 56px;
}

.page-faq .tool-station__head {
  margin-bottom: 22px;
}

.page-faq .tool-station__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-faq .tool-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 26px;
  border-radius: 22px;
  border: 1px solid var(--line-faint);
  background: var(--void-navy);
}

.page-faq .tool-card--catalog {
  background: linear-gradient(135deg, rgba(0, 209, 255, 0.09), var(--void-navy) 55%);
}

.page-faq .tool-card--vendor {
  background: linear-gradient(135deg, rgba(255, 138, 0, 0.08), var(--void-navy) 55%);
}

.page-faq .tool-card__icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: rgba(0, 209, 255, 0.12);
  color: var(--electric-blue);
}

.page-faq .tool-card--vendor .tool-card__icon {
  background: rgba(255, 138, 0, 0.12);
  color: var(--energy-orange);
}

.page-faq .tool-card h3 {
  margin: 0;
  font-size: 1.12rem;
}

.page-faq .tool-card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.page-faq .tool-card ol {
  margin: 4px 0 6px;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.page-faq .tool-card li::marker {
  color: var(--electric-blue);
}

.page-faq .tool-card--vendor li::marker {
  color: var(--energy-orange);
}

.page-faq .tool-card .btn {
  align-self: flex-start;
  margin-top: 6px;
}

.page-faq .contact-strip {
  margin-top: 56px;
}

.page-faq .contact-strip__card {
  padding: 26px 22px;
  border-radius: 26px;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.14), rgba(0, 209, 255, 0.08) 55%, var(--void-navy));
  border: 1px solid var(--line-faint);
}

.page-faq .contact-strip__main h2 {
  margin: 0 0 8px;
  font-size: 1.6rem;
}

.page-faq .contact-strip__main p {
  margin: 0;
  max-width: 680px;
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.75;
}

.page-faq .contact-strip__methods {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 20px 0;
}

.page-faq .contact-chip {
  flex: 1 1 200px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(11, 15, 32, 0.6);
  border: 1px solid var(--line-faint);
}

.page-faq .contact-chip span {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.page-faq .contact-chip b {
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--text-primary);
  word-break: break-all;
}

.page-faq .contact-strip__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (min-width: 760px) {
  .page-faq .faq-hero {
    padding: 52px 56px;
  }

  .page-faq .quick-guide__panel {
    padding: 40px 44px;
  }

  .page-faq .hot-faq__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .doc-shelf__grid {
    grid-template-columns: 320px 1fr;
  }

  .page-faq .doc-books {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-faq .tool-station__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-faq .contact-strip__card {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 24px;
    align-items: center;
  }

  .page-faq .contact-strip__actions {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-card__body {
    padding-right: 36px;
  }

  .page-faq .doc-books {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-faq .doc-shelf__grid {
    grid-template-columns: 360px 1fr;
  }
}