.page-faq {
  --faq-line: rgba(30, 90, 122, 0.5);
  --faq-line-soft: rgba(30, 90, 122, 0.34);
  --faq-panel: rgba(11, 37, 55, 0.68);
  --faq-measure: 68ch;
  display: block;
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--warm);
}

.page-faq .breadcrumbs li {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.page-faq .breadcrumbs li + li::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--map-line);
}

.page-faq .breadcrumbs a {
  color: var(--neon);
  text-decoration: none;
  transition: color 160ms ease;
}

.page-faq .breadcrumbs a:hover {
  color: var(--neon-soft);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--map-line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(30, 90, 122, 0.26) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 90, 122, 0.26) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(112deg, #000 0%, rgba(0, 0, 0, 0.28) 46%, transparent 72%);
  mask-image: linear-gradient(112deg, #000 0%, rgba(0, 0, 0, 0.28) 46%, transparent 72%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -170px;
  right: -200px;
  width: 560px;
  height: 560px;
  pointer-events: none;
  background: radial-gradient(circle at 42% 42%, rgba(255, 107, 44, 0.3), rgba(255, 107, 44, 0) 64%);
}

.page-faq .faq-hero-inner {
  position: relative;
  display: grid;
  gap: 40px;
  padding-top: 40px;
}

.page-faq .faq-hero-inner > * {
  min-width: 0;
}

.page-faq .faq-hero-copy .eyebrow {
  margin: 0 0 18px;
  color: var(--neon);
}

.page-faq .faq-hero-copy h1 {
  margin: 0;
  letter-spacing: -0.035em;
}

.page-faq .faq-hero-copy .t-lead {
  margin: 22px 0 0;
  max-width: 34em;
  color: var(--cold);
}

.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-faq .faq-actions .btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

/* ---------- 主题索引 ---------- */
.page-faq .faq-index {
  border-top: 1px solid var(--map-line);
  padding-top: 22px;
}

.page-faq .faq-index-label {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--warm);
}

.page-faq .faq-index ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index a {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid var(--faq-line-soft);
  color: var(--cold);
  text-decoration: none;
  font-size: 16px;
  line-height: 1.5;
  transition: color 180ms ease, padding-left 180ms ease;
}

.page-faq .faq-index a span {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--signal);
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  color: var(--neon);
  padding-left: 8px;
}

/* ---------- 章节通用 ---------- */
.page-faq .faq-block {
  position: relative;
}

.page-faq .faq-section-head {
  max-width: 46em;
  margin-bottom: 34px;
}

.page-faq .faq-section-head .eyebrow {
  margin: 0 0 14px;
  color: var(--signal-soft);
}

.page-faq .faq-section-head h2 {
  margin: 0 0 14px;
  letter-spacing: -0.02em;
}

.page-faq .faq-section-head p {
  margin: 0;
  color: var(--warm);
  line-height: 1.8;
}

/* ---------- 步骤条 ---------- */
.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li {
  position: relative;
  padding: 24px 0;
  max-width: var(--faq-measure);
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-steps li:last-child {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-step-num {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 9px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--signal);
  border: 1px solid rgba(255, 107, 44, 0.42);
  background: rgba(255, 107, 44, 0.08);
}

.page-faq .faq-steps h3 {
  margin: 0 0 10px;
  font-size: 20px;
  line-height: 1.42;
  letter-spacing: -0.01em;
}

.page-faq .faq-steps p {
  margin: 0;
  color: var(--warm);
  line-height: 1.8;
  font-size: 16px;
}

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

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 40px 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--faq-line);
  background: var(--ink-panel);
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--warm);
}

/* ---------- 订阅区 ---------- */
.page-faq .faq-sub-grid {
  display: grid;
  gap: 32px;
}

.page-faq .faq-sub-grid > * {
  min-width: 0;
}

.page-faq .faq-figure--side {
  margin: 0;
}

/* ---------- 分段切换 ---------- */
.page-faq .segmented {
  max-width: 100%;
}

.page-faq .segmented-list {
  display: flex;
  gap: 4px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--faq-line);
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .segmented-tab {
  flex: 0 0 auto;
  min-height: 44px;
  padding: 12px 22px;
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  color: var(--warm);
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: color 180ms ease, border-color 180ms ease;
}

.page-faq .segmented-tab:hover {
  color: var(--cold);
}

.page-faq .segmented-tab[aria-selected="true"] {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

.page-faq .segmented-tab:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}

.page-faq .segmented-panel[hidden] {
  display: none;
}

/* ---------- 检索技巧 ---------- */
.page-faq .faq-search-grid {
  display: grid;
  gap: 32px;
  margin-bottom: 36px;
}

.page-faq .faq-search-grid > * {
  min-width: 0;
}

.page-faq .faq-inputs {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-inputs li {
  padding: 20px 0;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-inputs li:last-child {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-inputs strong {
  display: block;
  margin-bottom: 8px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--neon);
}

.page-faq .faq-inputs p {
  margin: 0;
  color: var(--warm);
  line-height: 1.78;
  font-size: 16px;
}

.page-faq .faq-result-panel {
  padding: 26px 22px;
  border: 1px solid var(--faq-line);
  background: var(--faq-panel);
  border-left: 3px solid var(--neon);
}

.page-faq .faq-result-title {
  margin: 0 0 18px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cold);
}

.page-faq .faq-result-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-faq .faq-result-list li {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  color: var(--warm);
  font-size: 15px;
  line-height: 1.72;
}

.page-faq .faq-result-list span {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--signal-soft);
}

.page-faq .faq-fallback {
  padding: 24px 22px;
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
  max-width: var(--faq-measure);
}

.page-faq .faq-fallback h3 {
  margin: 0 0 14px;
  font-size: 18px;
  letter-spacing: -0.01em;
}

.page-faq .faq-fallback ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-faq .faq-fallback li {
  position: relative;
  padding-left: 20px;
  color: var(--warm);
  line-height: 1.78;
  font-size: 16px;
}

.page-faq .faq-fallback li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 7px;
  height: 1px;
  background: var(--signal);
}

.page-faq .faq-fallback a {
  color: var(--neon);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 折叠面板 ---------- */
.page-faq .faq-accordion {
  max-width: 78ch;
}

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

.page-faq .faq-accordion details:last-child {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-accordion summary {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 44px;
  padding: 20px 0 20px 20px;
  list-style: none;
  cursor: pointer;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--cold);
  transition: color 180ms ease;
}

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

.page-faq .faq-accordion summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 3px;
  background: var(--map-line);
  transition: background 220ms ease;
}

.page-faq .faq-accordion summary:hover {
  color: var(--neon);
}

.page-faq .faq-accordion details[open] summary::before {
  background: var(--signal);
}

.page-faq .faq-accordion summary:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}

.page-faq .faq-acc-mark {
  flex: 0 0 auto;
  width: 11px;
  height: 11px;
  margin-right: 4px;
  border-right: 2px solid var(--neon);
  border-bottom: 2px solid var(--neon);
  transform: rotate(45deg);
  transition: transform 240ms ease;
}

.page-faq .faq-accordion details[open] .faq-acc-mark {
  transform: rotate(-135deg);
}

.page-faq .faq-acc-body {
  padding: 0 0 26px 20px;
  max-width: var(--faq-measure);
  color: var(--warm);
}

.page-faq .faq-acc-body p {
  margin: 0 0 14px;
  line-height: 1.8;
  font-size: 16px;
}

.page-faq .faq-acc-body strong {
  color: var(--cold);
  font-weight: 600;
}

.page-faq .faq-acc-body ol {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: accstep;
  display: grid;
  gap: 9px;
}

.page-faq .faq-acc-body ol li {
  counter-increment: accstep;
  position: relative;
  padding-left: 34px;
  line-height: 1.76;
  font-size: 16px;
}

.page-faq .faq-acc-body ol li::before {
  content: counter(accstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--neon);
}

/* ---------- 联系区 ---------- */
.page-faq .faq-contact {
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-contact-inner {
  display: grid;
  gap: 32px;
}

.page-faq .faq-contact-inner > * {
  min-width: 0;
}

.page-faq .faq-contact-copy .t-body {
  margin: 0 0 16px;
  color: var(--warm);
  line-height: 1.8;
  max-width: var(--faq-measure);
}

.page-faq .faq-mail-card {
  padding: 26px 22px;
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--signal);
  background: var(--faq-panel);
}

.page-faq .faq-mail-label {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--warm);
}

.page-faq .faq-mail-addr {
  margin: 0 0 18px;
  font-family: var(--mono);
  font-size: 16px;
  line-height: 1.6;
  color: var(--signal-soft);
  word-break: break-all;
}

.page-faq .faq-mail-card ul {
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-faq .faq-mail-card ul li {
  position: relative;
  padding-left: 18px;
  color: var(--warm);
  font-size: 15px;
  line-height: 1.72;
}

.page-faq .faq-mail-card ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  background: var(--neon);
}

.page-faq .faq-mail-card .btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

/* ---------- 滚动显现（渐进增强） ---------- */
.page-faq [data-reveal] {
  transition: opacity 320ms ease, transform 320ms cubic-bezier(0.22, 0.61, 0.36, 1);
}

.page-faq [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 窄屏微调 ---------- */
@media (max-width: 479px) {
  .page-faq .faq-steps h3,
  .page-faq .faq-accordion summary {
    font-size: 17px;
  }

  .page-faq .faq-result-list li {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .page-faq .faq-mail-addr {
    font-size: 15px;
  }
}

/* ---------- 中等屏：步骤条转为左侧刻度轴 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-steps li {
    padding-left: 96px;
    padding-top: 26px;
    padding-bottom: 26px;
  }

  .page-faq .faq-steps li::after {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--faq-line-soft);
  }

  .page-faq .faq-step-num {
    position: absolute;
    left: 0;
    top: 30px;
    margin-bottom: 0;
    padding: 3px 6px;
    transform: translateX(-1px);
  }

  .page-faq .faq-steps--dense li {
    padding-left: 84px;
  }

  .page-faq .faq-figure {
    margin-top: 48px;
  }
}

/* ---------- 桌面：非对称栅格 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.9fr) minmax(0, 1fr);
    gap: 64px;
    align-items: end;
  }

  .page-faq .faq-index {
    padding-top: 26px;
  }

  .page-faq .faq-sub-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-figure--side {
    margin-top: 6px;
  }

  .page-faq .faq-search-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 56px;
  }

  .page-faq .faq-contact-inner {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    gap: 72px;
    align-items: start;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero {
    padding-bottom: 72px;
  }

  .page-faq .faq-hero-inner {
    padding-top: 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq [data-reveal],
  .page-faq .faq-acc-mark,
  .page-faq .segmented-tab,
  .page-faq .faq-index a {
    transition: none;
  }
}
<<<END>>>