.page-faq {
  --faq-idx-w: 220px;
  --faq-rule: rgba(26, 26, 26, 0.12);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(24px, 4vw, 48px);
}

.page-faq .faq-hero-head {
  max-width: 880px;
  margin-top: clamp(20px, 3vw, 36px);
}

.page-faq .faq-eyebrow {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin: 0;
}

.page-faq h1 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(28px, 4.6vw, 46px);
  line-height: 1.28;
  letter-spacing: 0.05em;
  color: var(--c-ink);
  margin: 14px 0 20px;
  max-width: 20em;
}

.page-faq .faq-lede {
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
  color: var(--c-graphite);
  max-width: 40em;
  margin: 0;
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-hero-figure {
  position: relative;
  margin: clamp(32px, 4.5vw, 56px) 0 0;
  border: 1px solid var(--faq-rule);
  background: var(--c-white);
  box-shadow: var(--shadow-paper);
}

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

.page-faq .faq-hero-figure .frame-caption {
  padding: 10px 16px;
  border-top: 1px solid var(--faq-rule);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-graphite);
}

/* ---------- 状态标签墙 ---------- */
.page-faq .faq-wall {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: clamp(28px, 4vw, 46px);
  padding-top: 22px;
  border-top: 1px solid var(--c-gold);
}

.page-faq .faq-tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  line-height: 1;
  text-decoration: none;
  border: 1px solid var(--faq-rule);
  background: var(--c-white);
  color: var(--c-ink);
  border-radius: 2px;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-faq .faq-tag-l {
  font-size: 14px;
  padding: 14px 22px;
}

.page-faq .faq-tag-m {
  font-size: 13px;
  padding: 11px 18px;
}

.page-faq .faq-tag-s {
  font-size: 12px;
  padding: 8px 14px;
}

.page-faq .faq-tag-red {
  background: var(--c-red);
  border-color: var(--c-red);
  color: var(--c-white);
}

.page-faq .faq-tag-ink {
  background: var(--c-ink);
  border-color: var(--c-ink);
  color: var(--c-porcelain);
}

.page-faq .faq-tag-gold {
  background: var(--c-gold-light);
  border-color: var(--c-gold);
  color: var(--c-ink);
}

.page-faq .faq-tag-jade {
  background: var(--c-jade-light);
  border-color: var(--c-jade);
  color: var(--c-jade);
}

.page-faq .faq-tag-outline {
  background: transparent;
  color: var(--c-graphite);
}

.page-faq .faq-tag:hover,
.page-faq .faq-tag:focus-visible {
  transform: translateY(-2px);
  border-color: var(--c-red);
}

.page-faq .faq-tag-red:hover,
.page-faq .faq-tag-ink:hover {
  color: var(--c-white);
  border-color: var(--c-gold);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding-top: clamp(28px, 4vw, 56px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-faq .faq-index-title {
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--c-gold);
  margin: 0 0 12px;
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}

.page-faq .faq-index-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  padding: 9px 14px;
  border: 1px solid var(--faq-rule);
  background: var(--c-white);
  font-size: 13px;
  color: var(--c-graphite);
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-index-link .mono {
  color: var(--c-gold);
  font-size: 11px;
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  color: var(--c-red);
  border-color: var(--c-red);
}

/* ---------- 问题组 ---------- */
.page-faq .faq-stream {
  min-width: 0;
}

.page-faq .faq-group {
  padding-bottom: clamp(36px, 4vw, 56px);
  margin-bottom: clamp(36px, 4vw, 56px);
  border-bottom: 1px solid var(--faq-rule);
  scroll-margin-top: 120px;
}

.page-faq .faq-group:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-group .sec-head {
  margin-bottom: 24px;
}

.page-faq .acc-item {
  border-top: 1px solid var(--faq-rule);
  scroll-margin-top: 120px;
}

.page-faq .acc-item:last-child {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .acc-trigger {
  display: flex;
  align-items: baseline;
  gap: 14px;
  width: 100%;
  padding: 18px 4px;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: inherit;
  transition: background-color 0.25s var(--ease);
}

.page-faq .acc-trigger:hover {
  background: rgba(201, 169, 110, 0.08);
}

.page-faq .acc-num {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-gold);
  padding-top: 4px;
}

.page-faq .acc-q {
  flex: 1 1 auto;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--c-ink);
  transition: color 0.25s var(--ease);
}

.page-faq .acc-trigger[aria-expanded="true"] .acc-q,
.page-faq .acc-trigger[aria-expanded="true"] .acc-num {
  color: var(--c-red);
}

.page-faq .acc-inner {
  padding: 0 4px 24px 40px;
  max-width: 62ch;
}

.page-faq .acc-inner p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-graphite);
}

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

.page-faq .acc-inner code {
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 1px 6px;
  background: var(--c-porcelain);
  border: 1px solid var(--faq-rule);
  color: var(--c-ink);
}

.page-faq .acc-inner ol {
  list-style: none;
  counter-reset: faqol;
  margin: 4px 0 12px;
  padding: 0;
}

.page-faq .acc-inner ol > li {
  counter-increment: faqol;
  position: relative;
  padding-left: 32px;
  margin-bottom: 10px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-graphite);
}

.page-faq .acc-inner ol > li::before {
  content: counter(faqol);
  position: absolute;
  left: 0;
  top: 3px;
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-white);
  background: var(--c-ink);
}

/* 状态标记 */
.page-faq .faq-state {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  padding: 0 8px;
  letter-spacing: 0.04em;
  border: 1px solid currentColor;
  border-radius: 2px;
}

.page-faq .faq-state-jade {
  color: var(--c-jade);
  background: var(--c-jade-light);
}

.page-faq .faq-state-amber {
  color: var(--c-amber);
  background: rgba(184, 116, 26, 0.09);
}

.page-faq .faq-state-ink {
  color: var(--c-graphite);
  background: var(--c-porcelain);
}

/* ---------- 换设备步骤 ---------- */
.page-faq .steps {
  counter-reset: faqstep;
  display: grid;
  gap: 0;
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-faq .step {
  counter-increment: faqstep;
  position: relative;
  padding: 0 0 34px 62px;
}

.page-faq .step::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 38px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--c-red), var(--c-gold));
}

.page-faq .step::after {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-ink);
  background: var(--c-porcelain);
  border: 1px solid var(--c-gold);
  border-radius: 50%;
  transition: background-color 0.3s var(--ease), border-color 0.3s var(--ease), color 0.3s var(--ease);
}

.page-faq .step:hover::after {
  background: var(--c-red);
  border-color: var(--c-red);
  color: var(--c-white);
}

.page-faq .step:last-child {
  padding-bottom: 8px;
}

.page-faq .step:last-child::before {
  display: none;
}

.page-faq .step-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--c-ink);
  margin: 6px 0 8px;
}

.page-faq .step-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-graphite);
  max-width: 60ch;
}

.page-faq .faq-device-figure {
  margin: 0 0 24px;
  border: 1px solid var(--faq-rule);
  background: var(--c-white);
  box-shadow: var(--shadow-paper);
}

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

.page-faq .faq-device-figure .frame-caption {
  padding: 10px 16px;
  border-top: 1px solid var(--faq-rule);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-graphite);
}

.page-faq .faq-callout {
  border-left: 3px solid var(--c-jade);
}

.page-faq .faq-callout p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-graphite);
}

.page-faq .faq-callout .callout-title {
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--c-ink);
  margin-bottom: 8px;
}

/* ---------- 自助排查 ---------- */
.page-faq .faq-path {
  display: grid;
  gap: 1px;
  background: var(--faq-rule);
  border: 1px solid var(--faq-rule);
}

.page-faq .faq-path-item {
  background: var(--c-white);
  padding: 20px 22px 22px;
  transition: background-color 0.25s var(--ease);
}

.page-faq .faq-path-item:hover {
  background: var(--c-porcelain);
}

.page-faq .faq-path-no {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--c-gold);
  margin: 0 0 8px;
}

.page-faq .faq-path-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.6;
  color: var(--c-ink);
  margin: 0 0 8px;
}

.page-faq .faq-path-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--c-graphite);
  max-width: 62ch;
}

/* ---------- 人工协助 ---------- */
.page-faq .faq-contact-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: minmax(0, 1fr);
  margin-bottom: clamp(24px, 3vw, 36px);
}

.page-faq .faq-contact-card {
  padding: 22px 22px 24px;
}

.page-faq .faq-contact-card .card-body p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--c-graphite);
}

.page-faq .faq-contact-card .card-body p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-mail {
  color: var(--c-red);
  text-decoration: none;
  border-bottom: 1px solid var(--c-gold);
  word-break: break-all;
}

.page-faq .faq-mail:hover {
  border-bottom-color: var(--c-red);
}

.page-faq .faq-phone {
  font-size: 18px;
  letter-spacing: 0.06em;
  color: var(--c-ink);
}

.page-faq .faq-team-note {
  padding-top: 20px;
  border-top: 1px solid var(--c-gold);
}

.page-faq .faq-team-note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--c-graphite);
}

.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-top-link {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-graphite);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-faq .faq-top-link:hover {
  color: var(--c-red);
  border-bottom-color: var(--c-red);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-idx-w) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 72px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 128px;
  }

  .page-faq .faq-index-list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index-list li {
    margin-bottom: 2px;
  }

  .page-faq .faq-index-link {
    display: flex;
    width: 100%;
    padding: 11px 0;
    border: 0;
    border-bottom: 1px solid var(--faq-rule);
    background: transparent;
  }

  .page-faq .faq-contact-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-path {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tag,
  .page-faq .step::after,
  .page-faq .acc-trigger,
  .page-faq .faq-path-item,
  .page-faq .faq-top-link {
    transition: none;
  }

  .page-faq .faq-tag:hover {
    transform: none;
  }
}