.page-faq {
  --faq-rail: 208px;
  --faq-gap: 36px;
  background: var(--frost);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 5vw, 56px) 0 clamp(30px, 6vw, 64px);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(110, 147, 168, 0.42) 0%, rgba(7, 42, 66, 0) 62%),
    linear-gradient(165deg, var(--night-blue) 0%, var(--ink-blue) 58%, #12507a 100%);
  color: var(--frost);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--signal) 0 88px, rgba(201, 216, 226, 0.28) 88px 100%);
}

.page-faq .faq-hero-inner {
  display: grid;
  gap: 26px;
}

.page-faq .faq-hero-copy {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 40rem;
}

.page-faq .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(201, 216, 226, 0.8);
}

.page-faq .breadcrumb-list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--ice-blue);
}

.page-faq .breadcrumb-list a {
  color: var(--pale-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .breadcrumb-list a:hover,
.page-faq .breadcrumb-list a:focus-visible {
  border-bottom-color: var(--signal);
  color: var(--frost);
}

.page-faq .faq-hero .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--signal-soft);
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.75rem, 7vw, 3.2rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--frost);
}

.page-faq .faq-lede {
  margin: 0;
  max-width: 44ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(247, 249, 251, 0.82);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}

.page-faq .faq-hero .btn--ghost {
  border-color: rgba(201, 216, 226, 0.55);
  color: var(--frost);
}

.page-faq .faq-hero .btn--ghost:hover,
.page-faq .faq-hero .btn--ghost:focus-visible {
  border-color: var(--signal);
  color: var(--signal-soft);
}

/* ---------- 图片体系 ---------- */
.page-faq .figure-media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--pale-blue);
  background: linear-gradient(155deg, #0d3a56 0%, #6e93a8 100%);
}

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

.page-faq .figure-caption {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--ice-blue);
}

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

.page-faq .faq-hero-figure .figure-media {
  border-color: rgba(201, 216, 226, 0.35);
  box-shadow: 0 24px 50px -34px rgba(0, 0, 0, 0.75);
}

.page-faq .faq-hero-figure .figure-caption {
  color: rgba(201, 216, 226, 0.72);
}

.page-faq .faq-inline-figure {
  margin: 0 0 18px;
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 20px;
  padding-top: clamp(26px, 5vw, 52px);
  padding-bottom: clamp(36px, 6vw, 68px);
}

/* ---------- 分区轨道 ---------- */
.page-faq .faq-rail {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .faq-rail-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ice-blue);
}

.page-faq .faq-rail-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 2px 2px 8px;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-rail-link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--pale-blue);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  color: var(--ink-blue);
  font-size: 13.5px;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  scroll-snap-align: start;
  transition: border-color 0.18s ease, color 0.18s ease, background 0.18s ease;
}

.page-faq .faq-rail-link:hover,
.page-faq .faq-rail-link:focus-visible {
  border-color: var(--signal);
  color: var(--signal);
}

.page-faq .faq-rail-link[aria-current="true"],
.page-faq .faq-rail-link[aria-current="location"],
.page-faq .faq-rail-link[aria-current="page"] {
  border-color: var(--signal);
  background: var(--signal);
  color: #ffffff;
}

.page-faq .faq-rail-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  opacity: 0.75;
}

.page-faq .faq-rail-note {
  margin: 0;
  padding-left: 10px;
  border-left: 2px solid var(--pale-blue);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ice-blue);
}

/* ---------- 区块 ---------- */
.page-faq .faq-block {
  scroll-margin-top: calc(var(--header-h) + 96px);
}

.page-faq .faq-block + .faq-block {
  margin-top: clamp(30px, 5vw, 52px);
}

.page-faq .faq-block-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 2px 10px;
  padding-bottom: 12px;
  margin-bottom: 16px;
  border-bottom: 2px solid var(--ink-blue);
}

.page-faq .faq-block-head .section-index {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--signal);
}

.page-faq .faq-block-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 5vw, 1.75rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink-blue);
}

.page-faq .faq-block-lede {
  grid-column: 1 / -1;
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ice-blue);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  margin: 0 0 10px;
  border: 1px solid var(--pale-blue);
  border-radius: var(--radius);
  background: #ffffff;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.page-faq .faq-item:hover {
  border-color: var(--ink-blue);
}

.page-faq .faq-item[open] {
  border-color: var(--ink-blue);
  box-shadow: 0 16px 34px -28px rgba(7, 42, 66, 0.75);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
}

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

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
  border-radius: var(--radius);
}

.page-faq .faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.25;
  color: var(--signal);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
}

.page-faq .faq-q-mark {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 500;
  line-height: 1.25;
  color: var(--signal);
}

.page-faq .faq-q {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-answer {
  display: grid;
  gap: 12px;
  margin-top: 2px;
  padding: 14px 16px 18px 44px;
  border-top: 1px dashed rgba(201, 216, 226, 0.95);
}

.page-faq .faq-answer-body p {
  margin: 0 0 0.85em;
  font-size: 14.5px;
  line-height: 1.85;
  color: #2b3b45;
}

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

.page-faq .faq-answer-body a {
  color: var(--ink-blue);
  text-decoration: underline;
  text-decoration-color: var(--signal);
  text-underline-offset: 3px;
}

.page-faq .faq-answer-body a:hover,
.page-faq .faq-answer-body a:focus-visible {
  color: var(--signal);
}

.page-faq .faq-tip {
  border: 1px solid rgba(110, 147, 168, 0.3);
  border-radius: var(--radius-sm);
  background: var(--cream);
  padding: 12px 14px;
}

.page-faq .faq-tip p {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--ink-blue);
}

.page-faq .faq-tip .faq-tip-label {
  margin: 0 0 5px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ice-blue);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-help {
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(11, 60, 93, 0.9) 0%, rgba(7, 42, 66, 0) 70%),
    var(--night-blue);
  color: var(--frost);
  padding: clamp(30px, 6vw, 60px) 0;
  scroll-margin-top: var(--header-h);
}

.page-faq .faq-help-inner {
  display: grid;
  gap: 24px;
}

.page-faq .faq-help .eyebrow {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--signal-soft);
}

.page-faq .faq-help h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 5vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.3;
  color: var(--frost);
}

.page-faq .faq-help p {
  margin: 0 0 0.9em;
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(247, 249, 251, 0.8);
}

.page-faq .faq-contact-list {
  display: grid;
  gap: 0;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-contact-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding: 10px 0;
  border-top: 1px solid rgba(201, 216, 226, 0.2);
}

.page-faq .faq-contact-label {
  flex: 0 0 auto;
  min-width: 64px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ice-blue);
}

.page-faq .faq-contact-value {
  flex: 1 1 12rem;
  min-width: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--frost);
  word-break: break-word;
}

.page-faq .faq-help-note {
  margin: 18px 0 0;
  font-size: 13px;
  color: rgba(201, 216, 226, 0.85);
}

.page-faq .faq-help-note a {
  color: var(--signal-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-help-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-help .btn--ghost {
  border-color: rgba(201, 216, 226, 0.55);
  color: var(--frost);
}

.page-faq .faq-help .btn--ghost:hover,
.page-faq .faq-help .btn--ghost:focus-visible {
  border-color: var(--signal);
  color: var(--signal-soft);
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-lede {
    font-size: 17px;
  }

  .page-faq .faq-answer {
    grid-template-columns: minmax(0, 1fr) 232px;
    column-gap: 24px;
    align-items: start;
  }

  .page-faq .faq-block-lede {
    font-size: 14.5px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
    gap: 44px;
  }

  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: var(--faq-gap);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    gap: 14px;
  }

  .page-faq .faq-rail-nav {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
    border-left: 1px solid var(--pale-blue);
  }

  .page-faq .faq-rail-link {
    min-height: 0;
    margin-left: -1px;
    padding: 9px 0 9px 14px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: transparent;
    white-space: normal;
    font-size: 14px;
    line-height: 1.5;
  }

  .page-faq .faq-rail-link[aria-current="true"],
  .page-faq .faq-rail-link[aria-current="location"],
  .page-faq .faq-rail-link[aria-current="page"] {
    background: transparent;
    color: var(--ink-blue);
    border-left-color: var(--signal);
  }

  .page-faq .faq-rail-link:hover,
  .page-faq .faq-rail-link:focus-visible {
    color: var(--signal);
    border-left-color: var(--signal);
  }

  .page-faq .faq-help-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 40px;
  }

  .page-faq .faq-help-actions {
    justify-content: flex-end;
  }
}
<<<END>>>