.page-faq {
  --faq-glass-dark: rgba(255, 255, 255, 0.06);
  --faq-border-dark: rgba(255, 255, 255, 0.12);
  --faq-sidebar-w: 280px;
}

/* ===== Hero ===== */
.page-faq__hero {
  position: relative;
  overflow: hidden;
}

.page-faq__hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 42%;
  height: 100%;
  background: linear-gradient(135deg, transparent 35%, rgba(255, 107, 53, 0.14) 100%);
  clip-path: polygon(35% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-faq__hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--grad-signal);
  opacity: 0.55;
}

.page-faq__hero-grid {
  display: grid;
  gap: 2rem;
  padding-bottom: 2.5rem;
  position: relative;
  z-index: 1;
}

.page-faq__hero-main {
  max-width: 660px;
}

.page-faq__hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.75rem;
}

.page-faq__hero-meta .index-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-color: rgba(255, 255, 255, 0.24);
  color: var(--white-72);
  font-size: 0.78rem;
}

.page-faq__hero-media {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  position: relative;
}

.page-faq__hero-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 55%, rgba(0, 229, 255, 0.08) 100%);
  pointer-events: none;
}

.page-faq__hero-media img {
  display: block;
  width: 100%;
  height: 230px;
  object-fit: cover;
}

/* ===== Search section ===== */
.page-faq__search-section {
  padding-top: 4rem;
}

.page-faq__search-panel {
  display: grid;
  gap: 2rem;
  align-items: center;
  padding: 1.75rem;
}

.page-faq__search-desc {
  color: var(--ink-soft);
  margin-top: 0.65rem;
  line-height: 1.7;
}

.page-faq__search-box {
  width: 100%;
  margin-top: 1.25rem;
}

.page-faq__search-media {
  max-width: 210px;
  margin: 0 auto;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-panel);
}

.page-faq__search-media img {
  display: block;
  width: 100%;
  height: 210px;
  object-fit: cover;
}

/* ===== Categories ===== */
.page-faq__cat-section {
  padding-top: 4rem;
}

.page-faq__cat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 2rem;
}

.page-faq__cat-card {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding: 1.5rem;
  text-decoration: none;
  color: var(--ink);
  position: relative;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-faq__cat-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 34px rgba(10, 25, 47, 0.12);
}

.page-faq__cat-card::before {
  content: attr(data-index);
  position: absolute;
  right: 0.75rem;
  bottom: -0.75rem;
  font-family: var(--font-mono);
  font-size: 3.5rem;
  font-weight: 700;
  color: rgba(10, 25, 47, 0.05);
  line-height: 1;
  pointer-events: none;
}

.page-faq__cat-icon {
  width: 2rem;
  height: 2rem;
  color: var(--orange);
  margin-bottom: 0.35rem;
}

.page-faq__cat-card h3 {
  font-family: var(--font-head);
  font-size: 1.2rem;
  margin: 0;
  color: var(--ink);
}

.page-faq__cat-card p {
  color: var(--ink-soft);
  line-height: 1.6;
  font-size: 0.875rem;
  margin: 0;
  position: relative;
  z-index: 1;
}

/* ===== FAQ section (dark console) ===== */
.page-faq__faq-section {
  margin-top: 4rem;
  padding: 4rem 0 4.5rem;
  position: relative;
  overflow: hidden;
}

.page-faq__faq-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--grad-signal);
  opacity: 0.4;
}

.page-faq__faq-section::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 34px 34px;
  pointer-events: none;
}

.page-faq__helpdesk {
  display: grid;
  gap: 2rem;
  margin-top: 2rem;
  position: relative;
  z-index: 1;
}

.page-faq__sidebar {
  background: var(--faq-glass-dark);
  border-color: var(--faq-border-dark);
  padding: 1.5rem;
  height: fit-content;
  backdrop-filter: blur(14px);
}

.page-faq__sidebar-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--cyan);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 1.1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--faq-border-dark);
}

.page-faq__sidebar-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-faq__sidebar-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--faq-border-dark);
  border-radius: 999px;
  color: var(--white-72);
  text-decoration: none;
  font-size: 0.875rem;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.page-faq__sidebar-link em {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.4);
}

.page-faq__sidebar-link:hover,
.page-faq__sidebar-link.is-active {
  background: rgba(0, 229, 255, 0.1);
  border-color: rgba(0, 229, 255, 0.3);
  color: var(--cyan);
}

.page-faq__sidebar-link.is-active em {
  color: var(--cyan);
}

.page-faq__sidebar-status {
  border-top: 1px solid var(--faq-border-dark);
  padding-top: 1.25rem;
  display: grid;
  gap: 0.5rem;
}

.page-faq__status-line {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--white-72);
  font-size: 0.85rem;
  margin: 0;
  line-height: 1.5;
}

.page-faq__status-line .status-dot {
  animation: page-faq-breathe 2.4s ease-in-out infinite;
}

@keyframes page-faq-breathe {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.35);
  }
  50% {
    box-shadow: 0 0 0 6px rgba(16, 185, 129, 0);
  }
}

/* ===== QA column ===== */
.page-faq__qa-column {
  display: grid;
  gap: 2.5rem;
}

.page-faq__qa-group {
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
}

.page-faq__group-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-head);
  font-size: 1.2rem;
  color: var(--white-72);
  margin: 0 0 1.25rem;
}

.page-faq__qa-grid {
  display: grid;
  gap: 0.9rem;
}

.page-faq__qa-item {
  background: var(--faq-glass-dark);
  border-color: var(--faq-border-dark);
  padding: 0;
  overflow: hidden;
  transition: border-color 0.25s;
}

.page-faq__qa-item[open] {
  border-color: rgba(0, 229, 255, 0.35);
}

.page-faq__qa-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 1.15rem 1.25rem;
  font-weight: 600;
  color: var(--white-72);
  transition: background 0.2s, color 0.2s;
  user-select: none;
}

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

.page-faq__qa-item summary:hover {
  background: rgba(255, 255, 255, 0.04);
}

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

.page-faq__qa-no {
  flex-shrink: 0;
  color: var(--cyan);
  border-color: rgba(0, 229, 255, 0.25);
  font-size: 0.72rem;
  padding: 0.25rem 0.5rem;
}

.page-faq__qa-title {
  flex: 1;
  font-size: 0.95rem;
  line-height: 1.5;
}

.page-faq__qa-icon {
  width: 1.3rem;
  height: 1.3rem;
  flex-shrink: 0;
  color: var(--cyan);
  transition: transform 0.3s ease;
}

.page-faq__qa-item[open] .page-faq__qa-icon {
  transform: rotate(45deg);
}

.page-faq__qa-answer {
  padding: 0 1.25rem 1.4rem 4.35rem;
  display: grid;
  gap: 0.7rem;
  color: var(--white-72);
  font-size: 0.9rem;
  line-height: 1.75;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.page-faq__qa-answer p {
  margin: 0;
}

.page-faq__qa-answer p:first-child {
  margin-top: 1rem;
}

/* ===== Unsolved section ===== */
.page-faq__unsolved {
  padding: 4rem 0;
}

.page-faq__unsolved-panel {
  background: var(--deep-blue);
  border-radius: var(--radius);
  padding: 2rem;
  display: grid;
  gap: 2rem;
  position: relative;
  overflow: hidden;
}

.page-faq__unsolved-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 14px,
    rgba(255, 255, 255, 0.02) 14px,
    rgba(255, 255, 255, 0.02) 15px
  );
  pointer-events: none;
  border-radius: inherit;
}

.page-faq__unsolved-panel::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 42%;
  height: 100%;
  background: linear-gradient(135deg, transparent 30%, rgba(255, 107, 53, 0.12) 100%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-faq__unsolved-guide {
  position: relative;
  z-index: 1;
}

.page-faq__unsolved-panel .stack-section__kicker,
.page-faq__unsolved-panel .stack-section__title {
  color: var(--white-72);
}

.page-faq__steps {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  gap: 0.75rem;
}

.page-faq__steps li {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  color: var(--white-72);
  font-size: 0.95rem;
  line-height: 1.6;
}

.page-faq__steps .index-tag {
  color: var(--orange);
  border-color: rgba(255, 107, 53, 0.35);
  font-size: 0.72rem;
  flex-shrink: 0;
}

.page-faq__unsolved-contact {
  position: relative;
  z-index: 1;
  background: rgba(255, 255, 255, 0.72);
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.2);
  padding: 1.5rem;
  display: grid;
  gap: 0.75rem;
  align-content: start;
}

.page-faq__contact-title {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 0.25rem;
}

.page-faq__contact-title .status-dot {
  animation: page-faq-breathe 2.4s ease-in-out infinite;
}

.page-faq__contact-text {
  font-size: 0.875rem;
  color: var(--ink);
  line-height: 1.65;
  margin: 0;
}

.page-faq__contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.75rem;
}

/* ===== Tablet (min-width: 640px) ===== */
@media (min-width: 640px) {
  .page-faq__hero-media img {
    height: 260px;
  }

  .page-faq__search-panel {
    grid-template-columns: 1fr 190px;
    gap: 1.5rem;
    padding: 2rem;
  }

  .page-faq__search-media {
    max-width: 190px;
  }

  .page-faq__search-media img {
    height: 190px;
  }

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

  .page-faq__sidebar-list {
    display: grid;
    gap: 0.35rem;
  }

  .page-faq__sidebar-link {
    border: none;
    border-radius: var(--radius-sm);
    padding: 0.7rem 0.9rem;
    width: 100%;
    justify-content: space-between;
  }

  .page-faq__sidebar-link.is-active {
    background: rgba(0, 229, 255, 0.1);
  }

  .page-faq__unsolved-panel {
    padding: 2.5rem;
  }
}

/* ===== Desktop (min-width: 1024px) ===== */
@media (min-width: 1024px) {
  .page-faq__hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: end;
    gap: 3rem;
    padding-bottom: 3rem;
  }

  .page-faq__hero-media img {
    height: 300px;
  }

  .page-faq__cat-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
  }

  .page-faq__helpdesk {
    grid-template-columns: var(--faq-sidebar-w) 1fr;
    align-items: start;
    gap: 2.5rem;
  }

  .page-faq__sidebar {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
  }

  .page-faq__unsolved-panel {
    grid-template-columns: 1fr 360px;
    gap: 3rem;
    padding: 3rem;
  }

  .page-faq__unsolved-contact {
    padding: 1.75rem;
  }
}