.page-faq {
  --faq-section-y: 68px;
  --faq-radius: 2px;
}

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 48px) 0 60px;
  background: var(--paper);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 68px 68px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), transparent 76%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), transparent 76%);
  pointer-events: none;
}

.page-faq .faq-hero .container {
  position: relative;
  z-index: 1;
}

.page-faq .hero-title {
  margin: 20px 0 0;
  font-family: var(--font-display);
  font-size: clamp(38px, 9vw, 96px);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--ink);
  max-width: 15ch;
}

.page-faq .hero-lede {
  margin-top: 26px;
  max-width: 46ch;
  font-size: clamp(16px, 1.7vw, 19px);
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-faq .hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
}

.page-faq .hero-facts li {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}

.page-faq .hero-facts li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--celadon);
}

.page-faq .faq-hero .vertical-note {
  display: none;
}

.page-faq .faq-section {
  padding: var(--faq-section-y) 0;
}

.page-faq .faq-section--white {
  background: var(--white);
}

.page-faq .faq-section--paper {
  background: var(--paper);
}

.page-faq .chapter-head h2 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.4vw, 42px);
  line-height: 1.22;
  color: var(--ink);
  max-width: 20ch;
}

.page-faq .chapter-lede {
  margin-top: 18px;
  max-width: 50ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-soft);
}

/* 三步路径 */
.page-faq .steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.page-faq .steps-visual .media-frame {
  display: block;
  overflow: hidden;
  background: var(--paper);
  border-radius: var(--faq-radius);
  max-height: 420px;
}

.page-faq .steps-visual .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .media-caption {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
}

.page-faq .step-track {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
  padding: 0 0 0 28px;
  list-style: none;
  counter-reset: step;
}

.page-faq .step-track::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 26px;
  border-left: 1px dashed var(--celadon);
  opacity: 0.7;
}

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

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

.page-faq .step::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 5px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--celadon);
  border: 2px solid var(--white);
  box-sizing: content-box;
  transition: background 0.2s var(--ease);
}

.page-faq .step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.2em;
  color: var(--ink-soft);
}

.page-faq .step-num::before {
  content: counter(step, decimal-leading-zero);
}

.page-faq .step h3 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: 23px;
  line-height: 1.3;
  color: var(--ink);
}

.page-faq .step p {
  margin: 12px 0 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-faq .step .step-result {
  margin-top: 16px;
  padding-top: 13px;
  border-top: 1px dashed var(--line);
  font-size: 14.5px;
  color: var(--ink-soft);
  opacity: 0.82;
  transition: opacity 0.2s var(--ease);
}

.page-faq .step .step-result strong {
  color: var(--cinnabar-deep);
  font-weight: 600;
}

.page-faq .step:hover .step-result,
.page-faq .step:focus-within .step-result {
  opacity: 1;
}

.page-faq .step:hover::before {
  background: var(--cinnabar);
}

/* 入口位置 */
.page-faq .find-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  margin: 40px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .find-item {
  border-top: 1px solid var(--line-strong);
  padding-top: 20px;
}

.page-faq .find-index {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cinnabar);
}

.page-faq .find-index::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--celadon);
}

.page-faq .find-item h3 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: 21px;
  line-height: 1.35;
  color: var(--ink);
}

.page-faq .find-item p {
  margin: 10px 0 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-faq .find-note {
  margin: 36px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-soft);
}

/* 设备兼容 */
.page-faq .compat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  margin-top: 40px;
}

.page-faq .table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .compat-table {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  font-size: 14.5px;
  text-align: left;
}

.page-faq .compat-table thead th {
  padding: 0 14px 12px 0;
  border-bottom: 1px solid var(--line-strong);
  font-family: var(--font-body);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  white-space: nowrap;
}

.page-faq .compat-table tbody th {
  padding: 16px 14px 16px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
}

.page-faq .compat-table tbody td {
  padding: 16px 14px 16px 0;
  border-bottom: 1px solid var(--line);
  line-height: 1.7;
  color: var(--ink-soft);
  vertical-align: top;
}

.page-faq .compat-table tbody td:nth-child(2) {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  white-space: nowrap;
  color: var(--ink);
}

.page-faq .compat-notes h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--ink);
}

.page-faq .compat-notes h3 + p {
  margin: 0 0 24px;
}

.page-faq .compat-notes p {
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-faq .compat-media {
  margin: 44px 0 0;
}

.page-faq .compat-media .media-frame {
  display: block;
  overflow: hidden;
  background: var(--paper);
  border-radius: var(--faq-radius);
}

.page-faq .compat-media .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* 常见问题 */
.page-faq .faq-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-faq .faq-list {
  border-top: 1px solid var(--line-strong);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 0 20px 18px;
  border-left: 2px solid transparent;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink);
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--ink-soft);
  transform: translateY(-1px);
  transition: color 0.18s var(--ease);
}

.page-faq .faq-item summary:hover {
  border-left-color: var(--mist);
}

.page-faq .faq-item[open] summary {
  border-left-color: var(--cinnabar);
  color: var(--cinnabar-deep);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
  color: var(--cinnabar);
}

.page-faq .faq-answer {
  padding: 0 0 22px 18px;
}

.page-faq .faq-answer p {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--ink-soft);
}

/* 排查顺序 */
.page-faq .triage-list {
  margin: 40px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: triage;
  max-width: 860px;
}

.page-faq .triage-item {
  counter-increment: triage;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .triage-item:first-child {
  border-top: 1px solid var(--line-strong);
}

.page-faq .triage-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cinnabar);
  padding-top: 4px;
}

.page-faq .triage-num::before {
  content: counter(triage, decimal-leading-zero);
}

.page-faq .triage-item h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.4;
  color: var(--ink);
}

.page-faq .triage-item p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .triage-link {
  display: inline-block;
  margin-top: 10px;
  font-size: 13.5px;
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

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

/* 联系支持 */
.page-faq .support-band {
  position: relative;
  overflow: hidden;
  padding: 64px 0;
  background: var(--ink);
  color: var(--paper);
}

.page-faq .support-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-radial-gradient(circle at 88% 18%, rgba(199, 162, 90, 0.18) 0 1px, transparent 1px 52px);
  pointer-events: none;
}

.page-faq .support-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

.page-faq .support-eyebrow {
  color: var(--gold);
}

.page-faq .support-text h2 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.25;
  color: var(--paper);
  max-width: 18ch;
}

.page-faq .support-text p {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--mist);
}

.page-faq .support-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.page-faq .support-band .support-line-btn {
  color: var(--paper);
  border-color: var(--line-light);
}

.page-faq .support-band .support-line-btn:hover {
  color: var(--gold);
  border-color: var(--gold);
}

.page-faq .support-card {
  border-top: 1px solid var(--line-light);
  padding-top: 8px;
}

.page-faq .support-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-light);
}

.page-faq .support-label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-faq .support-plain {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--paper);
}

.page-faq .support-plain a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--line-light);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .support-plain a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-faq .support-copy {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  padding: 10px 14px;
  border: 1px solid var(--line-light);
  border-radius: 0;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--paper);
  cursor: pointer;
  word-break: break-all;
  text-align: left;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .support-copy:hover,
.page-faq .support-copy:focus-visible {
  border-color: var(--gold);
  color: var(--gold);
  outline: none;
}

@media (min-width: 768px) {
  .page-faq {
    --faq-section-y: 92px;
  }

  .page-faq .faq-hero {
    padding: calc(var(--header-h) + 72px) 0 84px;
  }

  .page-faq .find-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px;
  }

  .page-faq .support-band {
    padding: 88px 0;
  }

  .page-faq .support-row {
    grid-template-columns: 120px minmax(0, 1fr);
    align-items: center;
    gap: 16px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero .vertical-note {
    display: block;
    position: absolute;
    right: 18px;
    top: 46%;
    transform: translateY(-50%);
    writing-mode: vertical-rl;
    font-family: var(--font-body);
    font-size: 12px;
    letter-spacing: 0.36em;
    color: var(--ink-soft);
    opacity: 0.72;
    z-index: 1;
  }

  .page-faq .steps-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 36px 28px;
    align-items: start;
  }

  .page-faq .steps-head {
    grid-column: 1 / 8;
    grid-row: 1;
  }

  .page-faq .steps-visual {
    grid-column: 9 / 13;
    grid-row: 1 / 3;
  }

  .page-faq .steps-visual .media-frame {
    max-height: 520px;
  }

  .page-faq .step-track {
    grid-column: 1 / 9;
    grid-row: 2;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 24px;
    padding: 0;
  }

  .page-faq .step-track::before {
    left: 8px;
    right: 8px;
    top: 5px;
    bottom: auto;
    border-left: 0;
    border-top: 1px dashed var(--celadon);
    opacity: 0.55;
  }

  .page-faq .step {
    padding: 26px 0 0;
    border-top: 1px solid var(--line-strong);
  }

  .page-faq .step::before {
    left: 0;
    top: -11px;
    border-color: var(--white);
  }

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

  .page-faq .find-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 36px;
    margin-top: 48px;
  }

  .page-faq .compat-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    gap: 56px;
    margin-top: 48px;
  }

  .page-faq .faq-grid {
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 64px;
    align-items: start;
  }

  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--header-h) + 32px);
  }

  .page-faq .faq-item summary {
    font-size: 18.5px;
    padding: 22px 0 22px 20px;
  }

  .page-faq .faq-answer {
    padding-left: 20px;
    padding-bottom: 26px;
  }

  .page-faq .support-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
    gap: 64px;
    align-items: start;
  }
}

@media (min-width: 1200px) {
  .page-faq .hero-title {
    max-width: 14ch;
  }

  .page-faq .step h3 {
    font-size: 25px;
  }
}
</main>