.page-faq {
  background: var(--ink-900);
  color: var(--paper-050);
  --faq-panel: var(--ink-800);
  --faq-panel-alt: var(--ink-700);
  --faq-border: var(--grid-line);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--header-h) + 44px) 0 56px;
  border-bottom: var(--line);
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(79, 240, 208, 0.14), transparent 62%),
    radial-gradient(90% 70% at 0% 100%, rgba(255, 154, 60, 0.08), transparent 60%),
    var(--ink-950);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 20px;
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 7.2vw, 60px);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--paper-050);
  max-width: 20ch;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--gray-400);
}

.page-faq .faq-hero__meta {
  list-style: none;
  margin: 8px 0 0;
  padding: 20px 0 0;
  border-top: var(--line);
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-faq .faq-hero__meta-item {
  display: grid;
  gap: 4px;
}

.page-faq .faq-hero__meta-value {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--cyan-400);
}

.page-faq .faq-hero__meta-label {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--gray-400);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 8px 0 0;
}

/* ---------- 通用章节 ---------- */
.page-faq .faq-block,
.page-faq .faq-symptoms,
.page-faq .faq-codes,
.page-faq .faq-ticket {
  border-bottom: var(--line);
}

.page-faq .faq-symptoms {
  background: var(--ink-900);
}

.page-faq .faq-block:nth-of-type(even) {
  background: var(--ink-900);
}

.page-faq .faq-block:nth-of-type(odd) {
  background: var(--ink-950);
}

/* ---------- 症状分流 ---------- */
.page-faq .faq-symptom-grid {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-faq .faq-symptom {
  display: grid;
  gap: 8px;
  padding: 18px 18px 20px;
  border: var(--line);
  border-left: 3px solid var(--grid-line);
  background: var(--faq-panel);
  color: inherit;
  text-decoration: none;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-symptom:hover,
.page-faq .faq-symptom:focus-visible {
  border-color: var(--cyan-400);
  border-left-color: var(--cyan-400);
  background: var(--faq-panel-alt);
  transform: translateY(-2px);
}

.page-faq .faq-symptom:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 2px;
}

.page-faq .faq-symptom__code {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan-400);
}

.page-faq .faq-symptom__name {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper-050);
}

.page-faq .faq-symptom__hint {
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray-400);
}

/* ---------- 插图 ---------- */
.page-faq .faq-figure {
  margin: 8px 0 24px;
  border: var(--line);
  background: var(--ink-800);
}

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

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  border: var(--line);
  background: var(--faq-panel);
}

.page-faq .faq-item__summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: baseline;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  transition: background 180ms var(--ease);
}

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

.page-faq .faq-item__summary:hover {
  background: var(--faq-panel-alt);
}

.page-faq .faq-item__summary::after {
  content: "+";
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan-400);
  transition: transform 180ms var(--ease);
}

.page-faq .faq-item[open] > .faq-item__summary::after {
  transform: rotate(45deg);
}

.page-faq .faq-item[open] > .faq-item__summary {
  border-bottom: 1px dashed var(--grid-line);
}

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--gray-400);
}

.page-faq .faq-item__q {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper-050);
}

.page-faq .faq-item__body {
  padding: 16px 18px 20px;
}

/* ---------- 编号步骤 ---------- */
.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 0;
  padding: 0;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  position: relative;
  padding: 0 0 16px 40px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-050);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--cyan-400);
}

.page-faq .faq-steps li::after {
  content: "";
  position: absolute;
  left: 13px;
  top: 24px;
  bottom: 4px;
  border-left: 1px dashed var(--grid-line);
}

.page-faq .faq-steps li:last-child {
  padding-bottom: 0;
}

.page-faq .faq-steps li:last-child::after {
  display: none;
}

.page-faq .faq-steps a {
  color: var(--cyan-400);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-note {
  margin: 16px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--orange-500);
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray-400);
}

/* ---------- 判断顺序 ---------- */
.page-faq .faq-order {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--line);
}

.page-faq .faq-order__step {
  display: grid;
  gap: 8px;
  padding: 22px 0;
  border-bottom: var(--line);
}

.page-faq .faq-order__idx {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan-400);
}

.page-faq .faq-order__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--paper-050);
}

.page-faq .faq-order__step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--gray-400);
  max-width: 66ch;
}

.page-faq .faq-callout {
  margin-top: 24px;
  padding: 20px;
  border: var(--line);
  border-left: 3px solid var(--orange-500);
  background: var(--faq-panel);
  display: grid;
  gap: 14px;
}

.page-faq .faq-callout__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper-050);
  max-width: 62ch;
}

/* ---------- 速查表 ---------- */
.page-faq .faq-codes {
  background: var(--ink-950);
}

.page-faq .faq-code-legend {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-table-wrap {
  overflow-x: auto;
  border: var(--line);
  background: var(--faq-panel);
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-table {
  width: 100%;
  min-width: 800px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .faq-table th {
  text-align: left;
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray-400);
  background: var(--ink-900);
  border-bottom: var(--line);
  white-space: nowrap;
}

.page-faq .faq-table td {
  padding: 15px 16px;
  border-bottom: 1px solid var(--faq-border);
  color: var(--paper-050);
  vertical-align: top;
  line-height: 1.7;
}

.page-faq .faq-table tbody tr:nth-child(odd) {
  background: var(--faq-panel-alt);
}

.page-faq .faq-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .faq-table td:first-child {
  color: var(--cyan-200);
  font-weight: 600;
}

.page-faq .faq-table-note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray-400);
}

/* ---------- 工单 ---------- */
.page-faq .faq-ticket {
  background: var(--ink-900);
  border-bottom: 0;
}

.page-faq .faq-ticket__inner {
  display: grid;
  gap: 36px;
}

.page-faq .faq-checklist {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: none;
}

.page-faq .faq-checklist__item {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-050);
}

.page-faq .faq-checklist__item .faq-checklist__dot {
  position: absolute;
  left: 0;
  top: 10px;
  width: 10px;
  height: 10px;
  border: 1px solid var(--cyan-400);
  background: rgba(79, 240, 208, 0.18);
}

.page-faq .faq-ticket__aside {
  padding: 22px;
  border: var(--line);
  background: var(--faq-panel);
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-faq .faq-ticket__aside-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-faq .faq-ticket__aside-tag {
  margin: 0;
}

.page-faq .faq-ticket__aside-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray-400);
}

.page-faq .faq-ticket__aside-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 6px 0 0;
}

.page-faq .faq-ticket__aside-actions .btn {
  flex: 1 1 auto;
  text-align: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

  .page-faq .faq-symptom-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-hero__inner {
    gap: 24px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: calc(var(--header-h) + 64px) 0 72px;
  }

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

  .page-faq .faq-ticket__inner {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-order__step {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 6px 20px;
    align-items: start;
  }

  .page-faq .faq-order__idx {
    grid-row: span 2;
    font-size: 34px;
    padding-top: 2px;
  }

  .page-faq .faq-figure {
    margin-bottom: 32px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero h1 {
    max-width: 24ch;
  }

  .page-faq .faq-item__summary {
    padding: 20px 24px;
  }

  .page-faq .faq-item__body {
    padding: 20px 24px 26px;
  }

  .page-faq .faq-ticket__aside {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-symptom,
  .page-faq .faq-item__summary,
  .page-faq .faq-item__summary::after {
    transition: none;
  }

  .page-faq .faq-symptom:hover,
  .page-faq .faq-symptom:focus-visible {
    transform: none;
  }
}