.page-faq {
  --faq-bg: #0A1A2F;
  --faq-bg-soft: #0F2540;
  --faq-bg-card: #F5F2EB;
  --faq-text-dark: #2B1E16;
  --faq-text-on-dark: #F0F4F8;
  --faq-muted-on-dark: #B0BEC5;
  --faq-muted-on-light: #5C6B7A;
  --faq-accent: #00E676;
  --faq-accent-alt: #FF6A00;
  --faq-grid-line: #1D3B5C;
  --faq-data-blue: #1E90FF;
  --faq-font-headline: "Noto Sans SC", "Impact", "Arial Black", sans-serif;
  --faq-font-body: "Roboto", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --faq-font-data: "Roboto Mono", "Liberation Mono", monospace;
  --faq-speed: 200ms;
  background: var(--faq-bg);
  color: var(--faq-text-on-dark);
  overflow-x: hidden;
}

.page-faq__hero {
  position: relative;
  padding: 48px 0 56px;
  border-bottom: 1px solid var(--faq-grid-line);
  background:
    repeating-linear-gradient(90deg, transparent 0, transparent 79px, var(--faq-grid-line) 80px),
    repeating-linear-gradient(0deg, transparent 0, transparent 79px, var(--faq-grid-line) 80px);
  background-size: 80px 80px;
  background-position: -1px -1px;
}

.page-faq__hero-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}

.page-faq__breadcrumb {
  margin: 0 0 14px;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--faq-muted-on-dark);
  font-family: var(--faq-font-data);
}

.page-faq__title {
  margin: 0 0 12px;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.05;
  font-family: var(--faq-font-headline);
  letter-spacing: 0.02em;
}

.page-faq__subtitle {
  margin: 0;
  max-width: 620px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--faq-muted-on-dark);
}

.page-faq__hero-index {
  display: none;
}

.page-faq__hero-slash {
  position: absolute;
  right: 0;
  bottom: -1px;
  width: 36%;
  height: 6px;
  background: linear-gradient(90deg, transparent 0%, var(--faq-accent-alt) 100%);
  clip-path: polygon(4% 0, 100% 0, 96% 100%, 0 100%);
}

.page-faq__body {
  display: flex;
  flex-direction: column;
  gap: 40px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 40px 20px 64px;
}

.page-faq__sidebar {
  position: relative;
  flex-shrink: 0;
}

.page-faq__sidebar-title {
  margin: 0 0 16px;
  font-size: 14px;
  font-family: var(--faq-font-data);
  color: var(--faq-accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.page-faq__sidebar-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}

.page-faq__sidebar-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 14px 12px;
  background: transparent;
  border: 1px solid transparent;
  text-decoration: none;
  color: var(--faq-text-on-dark);
  transition: background var(--faq-speed) ease, border-color var(--faq-speed) ease, color var(--faq-speed) ease;
}

.page-faq__sidebar-code {
  font-family: var(--faq-font-data);
  font-size: 12px;
  color: var(--faq-accent-alt);
}

.page-faq__sidebar-name {
  font-size: 15px;
  font-weight: 600;
}

.page-faq__sidebar-contact {
  display: none;
}

.page-faq__content {
  flex: 1;
  min-width: 0;
}

.page-faq__search-wrap {
  margin-bottom: 32px;
}

.page-faq__search-label {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  font-family: var(--faq-font-data);
  color: var(--faq-muted-on-dark);
  letter-spacing: 0.06em;
}

.page-faq__search-box {
  display: flex;
  align-items: center;
  background: var(--faq-bg-soft);
  border: 1px solid var(--faq-grid-line);
  padding: 0 16px;
  transition: border-color var(--faq-speed) ease;
}

.page-faq__search-box:focus-within {
  border-color: var(--faq-accent);
}

.page-faq__search-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  border: 2px solid var(--faq-muted-on-dark);
  border-radius: 50%;
  position: relative;
  margin-right: 12px;
}

.page-faq__search-icon::after {
  content: "";
  position: absolute;
  width: 2px;
  height: 6px;
  background: var(--faq-muted-on-dark);
  bottom: -5px;
  right: -2px;
  transform: rotate(45deg);
}

.page-faq__search-input {
  width: 100%;
  background: transparent;
  border: none;
  padding: 14px 0;
  font-size: 16px;
  color: var(--faq-text-on-dark);
  outline: none;
  font-family: var(--faq-font-body);
}

.page-faq__search-input::placeholder {
  color: var(--faq-muted-on-dark);
  opacity: 0.6;
}

.page-faq__section {
  margin-bottom: 56px;
}

.page-faq__section-head {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--faq-grid-line);
}

.page-faq__section-num {
  font-size: 48px;
  line-height: 1;
  font-family: var(--faq-font-data);
  color: transparent;
  -webkit-text-stroke: 1px var(--faq-accent);
  font-weight: 700;
  flex-shrink: 0;
}

.page-faq__section-title-wrap {
  padding-top: 4px;
}

.page-faq__section-title {
  margin: 0 0 6px;
  font-size: 22px;
  font-family: var(--faq-font-headline);
  color: var(--faq-text-on-dark);
}

.page-faq__section-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--faq-muted-on-dark);
}

.page-faq__list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-faq__item {
  background: var(--faq-bg-soft);
  border-left: 2px solid var(--faq-grid-line);
  transition: border-color var(--faq-speed) ease, background var(--faq-speed) ease;
}

.page-faq__item:hover {
  border-left-color: var(--faq-accent);
  background: rgba(0, 230, 118, 0.06);
}

.page-faq__q {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 16px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

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

.page-faq__q-num {
  font-family: var(--faq-font-data);
  font-size: 12px;
  color: var(--faq-accent);
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.page-faq__q-text {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--faq-text-on-dark);
}

.page-faq__q-icon {
  position: relative;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.page-faq__q-icon::before,
.page-faq__q-icon::after {
  content: "";
  position: absolute;
  background: var(--faq-accent-alt);
  transition: transform var(--faq-speed) ease;
}

.page-faq__q-icon::before {
  top: 7px;
  left: 0;
  width: 16px;
  height: 2px;
}

.page-faq__q-icon::after {
  top: 0;
  left: 7px;
  width: 2px;
  height: 16px;
}

.page-faq__item[open] .page-faq__q-icon::after {
  transform: scaleY(0);
}

.page-faq__a {
  padding: 0 16px 22px 42px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-muted-on-dark);
}

.page-faq__a p {
  margin: 0 0 12px;
}

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

.page-faq__tip {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 12px 14px;
  margin-top: 14px;
  background: rgba(255, 106, 0, 0.10);
  border-left: 2px solid var(--faq-accent-alt);
}

.page-faq__tip-tag {
  font-size: 12px;
  font-family: var(--faq-font-data);
  color: var(--faq-accent-alt);
  white-space: nowrap;
}

.page-faq__steps {
  margin: 12px 0 14px;
  padding-left: 22px;
}

.page-faq__steps li {
  margin-bottom: 8px;
}

.page-faq__steps li::marker {
  color: var(--faq-accent);
}

.page-faq__checklist {
  margin: 12px 0 0;
  padding-left: 22px;
}

.page-faq__checklist li {
  margin-bottom: 8px;
}

.page-faq__checklist li::marker {
  color: var(--faq-data-blue);
}

.page-faq__inline-link {
  color: var(--faq-accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 230, 118, 0.4);
  transition: border-color var(--faq-speed) ease;
}

.page-faq__inline-link:hover {
  border-bottom-color: var(--faq-accent);
}

.page-faq__visual-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin: 64px 0;
  padding: 28px;
  background: var(--faq-bg-card);
  position: relative;
}

.page-faq__visual-wrap::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--faq-accent-alt) 0%, var(--faq-accent) 100%);
}

.page-faq__visual-copy {
  color: var(--faq-text-dark);
}

.page-faq__visual-tag {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 12px;
  font-family: var(--faq-font-data);
  color: var(--faq-accent-alt);
  letter-spacing: 0.1em;
  padding: 4px 8px;
  background: rgba(255, 106, 0, 0.12);
}

.page-faq__visual-title {
  margin: 0 0 10px;
  font-size: 24px;
  font-family: var(--faq-font-headline);
}

.page-faq__visual-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: #5C6B7A;
}

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

.page-faq__bottom-contact-grid {
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding: 36px 20px;
  background: var(--faq-bg-soft);
  border: 1px solid var(--faq-grid-line);
}

.page-faq__bottom-contact-icon {
  display: none;
}

.page-faq__bottom-contact-title {
  margin: 0 0 10px;
  font-size: 22px;
  font-family: var(--faq-font-headline);
}

.page-faq__bottom-contact-text {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-muted-on-dark);
}

.page-faq__bottom-contact-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  font-family: var(--faq-font-data);
  font-size: 14px;
}

.page-faq__bottom-contact-phone {
  color: var(--faq-accent);
  font-weight: 700;
}

.page-faq__bottom-contact-email {
  color: var(--faq-muted-on-dark);
}

.page-faq__backtop {
  position: fixed;
  right: 16px;
  bottom: 24px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--faq-accent-alt);
  color: #0A1A2F;
  text-decoration: none;
  font-size: 18px;
  font-weight: 700;
  z-index: 10;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.35);
  transition: background var(--faq-speed) ease, transform var(--faq-speed) ease;
}

.page-faq__backtop:hover {
  background: var(--faq-accent);
  transform: translateY(-2px);
}

@media (min-width: 768px) {
  .page-faq__hero {
    padding: 72px 0 88px;
  }

  .page-faq__hero-index {
    display: flex;
    align-items: baseline;
    gap: 14px;
    padding: 16px 20px;
    background: var(--faq-bg-soft);
    border: 1px solid var(--faq-grid-line);
    border-top: 2px solid var(--faq-accent);
  }

  .page-faq__hero-num {
    font-family: var(--faq-font-data);
    font-size: 32px;
    font-weight: 700;
    color: var(--faq-accent);
  }

  .page-faq__hero-num--alt {
    color: var(--faq-accent-alt);
    margin-left: 8px;
  }

  .page-faq__hero-label {
    font-size: 13px;
    color: var(--faq-muted-on-dark);
  }

  .page-faq__body {
    flex-direction: row;
    gap: 56px;
    padding-top: 56px;
  }

  .page-faq__sidebar {
    width: 260px;
  }

  .page-faq__sidebar-nav {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .page-faq__sidebar-link {
    padding: 14px 12px;
    border: 1px solid var(--faq-grid-line);
    background: rgba(0, 0, 0, 0.15);
  }

  .page-faq__sidebar-link:hover {
    background: rgba(0, 230, 118, 0.10);
    border-color: var(--faq-accent);
  }

  .page-faq__sidebar-contact {
    display: block;
    margin-top: 36px;
    padding: 20px;
    background: linear-gradient(135deg, rgba(0, 230, 118, 0.08) 0%, var(--faq-bg-soft) 100%);
    border: 1px solid var(--faq-grid-line);
  }

  .page-faq__sidebar-contact-title {
    margin: 0 0 10px;
    font-size: 17px;
    font-weight: 700;
    color: var(--faq-text-on-dark);
  }

  .page-faq__sidebar-contact-text {
    margin: 0 0 16px;
    font-size: 14px;
    line-height: 1.7;
    color: var(--faq-muted-on-dark);
  }

  .page-faq__sidebar-contact-btn {
    display: inline-block;
  }

  .page-faq__section-head {
    margin-bottom: 24px;
  }

  .page-faq__q {
    padding: 20px 22px;
  }

  .page-faq__a {
    padding: 0 22px 24px 58px;
  }

  .page-faq__visual-wrap {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    padding: 32px;
  }

  .page-faq__visual-copy {
    padding-right: 12px;
  }

  .page-faq__visual-title {
    font-size: 28px;
  }

  .page-faq__bottom-contact-grid {
    flex-direction: row;
    align-items: center;
    gap: 32px;
    padding: 40px 48px;
  }

  .page-faq__bottom-contact-icon {
    display: block;
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 50%;
    border: 3px solid var(--faq-accent);
    flex-shrink: 0;
  }

  .page-faq__bottom-contact-copy {
    flex: 1;
  }
}

@media (min-width: 1024px) {
  .page-faq__hero-inner {
    padding: 0 32px;
  }

  .page-faq__body {
    padding-left: 32px;
    padding-right: 32px;
  }

  .page-faq__search-input {
    font-size: 17px;
  }
}