.page-faq {
  --faq-card: #1F1F1F;
  --faq-line: #3A3A3A;
  --faq-num: #FF6B35;
  --faq-accent: #39FF14;
  --faq-blue: #3498DB;
  --faq-orange: #E67E22;
  --faq-green: #2ECC71;
}

.page-faq .faq-hero {
  padding: 24px 16px 8px;
}
.page-faq .breadcrumb {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-sub);
  margin-bottom: 18px;
}
.page-faq .breadcrumb a {
  color: var(--text-sub);
  text-decoration: none;
}
.page-faq .breadcrumb a:hover {
  color: var(--faq-accent);
}
.page-faq .breadcrumb-sep {
  margin: 0 6px;
  color: var(--faq-num);
}
.page-faq .page-hero h1 {
  font-family: var(--font-head);
  font-size: 32px;
  line-height: 1.2;
  margin: 0 0 10px;
  letter-spacing: 0.02em;
}
.page-faq .lead {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-sub);
  margin: 0 0 8px;
  max-width: 800px;
}

.page-faq .faq-steps {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}
.page-faq .faq-step-card {
  position: relative;
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
  padding: 22px 16px 18px;
}
.page-faq .faq-step-card:nth-child(1) {
  border-top: 3px solid var(--faq-num);
}
.page-faq .faq-step-card:nth-child(2) {
  border-top: 3px solid var(--faq-accent);
}
.page-faq .faq-step-card:nth-child(3) {
  border-top: 3px solid var(--status-live);
}
.page-faq .faq-step-card::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: 18px;
  height: 18px;
  border-top: 3px solid var(--faq-accent);
  border-right: 3px solid var(--faq-accent);
}
.page-faq .faq-step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--faq-num);
  line-height: 1;
  margin-bottom: 10px;
}
.page-faq .faq-step-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 8px;
}
.page-faq .faq-step-card p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-sub);
  margin: 0;
}
.page-faq .faq-steps-visual {
  margin-top: 20px;
}
.page-faq .faq-steps-visual img {
  display: block;
  width: 100%;
  max-width: 600px;
  height: auto;
  border: 1px solid var(--faq-line);
  margin: 0 auto;
}

.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 14px;
}
.page-faq .faq-filter .tag {
  cursor: pointer;
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  border: 1px solid var(--faq-line);
  color: var(--text-sub);
}
.page-faq .faq-filter .tag.is-active {
  background: var(--faq-accent);
  border-color: var(--faq-accent);
  color: #000;
  font-weight: 700;
}
.page-faq .faq-filter .tag:not(.is-active):hover {
  color: var(--faq-accent);
  border-color: var(--faq-accent);
}

.page-faq .faq-list {
  display: grid;
  gap: 10px;
}
.page-faq .faq-details {
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
  border-left: 4px solid var(--faq-blue);
}
.page-faq .faq-details[data-cat="search"] {
  border-left-color: var(--faq-orange);
}
.page-faq .faq-details[data-cat="device"] {
  border-left-color: var(--faq-green);
}
.page-faq .faq-summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 12px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  background: none;
  border: 0;
  cursor: pointer;
  list-style: none;
}
.page-faq .faq-summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-summary::after {
  content: "＋";
  margin-left: auto;
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--faq-num);
}
.page-faq .faq-details[open] .faq-summary::after {
  content: "－";
}
.page-faq .faq-summary:focus-visible {
  outline: 2px solid var(--faq-accent);
  outline-offset: -2px;
}
.page-faq .faq-q-cat {
  flex-shrink: 0;
  min-width: 52px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 24px;
  padding: 0 6px;
}
.page-faq .faq-q-text {
  flex: 1;
}
.page-faq .faq-answer {
  padding: 0 14px 14px;
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.7;
}
.page-faq .faq-answer p {
  margin: 0;
}
.page-faq .faq-answer a {
  color: var(--faq-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-device-grid {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}
.page-faq .faq-device-card {
  background: var(--section-ink);
  border: 1px solid var(--faq-line);
  padding: 20px 16px;
}
.page-faq .faq-device-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.page-faq .faq-device-icon {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
  color: var(--faq-num);
}
.page-faq .faq-device-head h3 {
  font-size: 18px;
  margin: 0;
  flex: 1;
}
.page-faq .faq-device-list {
  margin: 0;
  padding-left: 18px;
}
.page-faq .faq-device-list li {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-sub);
}
.page-faq .faq-device-visual {
  margin-top: 20px;
}
.page-faq .faq-device-visual img {
  display: block;
  width: 100%;
  max-width: 800px;
  height: auto;
  border: 1px solid var(--faq-line);
  margin: 0 auto;
}

.page-faq .faq-feedback-grid {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}
.page-faq .faq-feedback-card {
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
  padding: 16px;
}
.page-faq .faq-feedback-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--faq-accent);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.page-faq .faq-feedback-card p {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  margin: 0;
  word-break: break-all;
}
.page-faq .faq-feedback-time {
  margin-top: 16px;
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
  border-left: 4px solid var(--faq-green);
  padding: 18px 16px;
}
.page-faq .faq-time-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--faq-green);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.page-faq .faq-time-value {
  font-family: var(--font-head);
  font-size: 24px;
  color: var(--text-main);
  margin: 4px 0;
}
.page-faq .faq-time-note p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-sub);
  margin: 0 0 10px;
}
.page-faq .btn {
  display: inline-block;
  background: var(--faq-num);
  color: #000;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  padding: 10px 18px;
  border: 0;
  text-decoration: none;
  cursor: pointer;
}
.page-faq .btn:hover {
  background: var(--faq-accent);
}

@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 40px 32px 16px;
  }
  .page-faq .page-hero h1 {
    font-size: 44px;
  }
  .page-faq .lead {
    font-size: 17px;
  }
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }
  .page-faq .faq-step-card {
    min-height: 220px;
    padding: 26px 20px 20px;
  }
  .page-faq .faq-device-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-faq .faq-feedback-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-faq .faq-feedback-time {
    display: grid;
    grid-template-columns: 170px 220px 1fr;
    align-items: center;
    gap: 18px;
  }
  .page-faq .faq-time-note p {
    margin: 0 0 8px;
  }
  .page-faq .faq-time-value {
    font-size: 28px;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    align-items: start;
  }
}