.page-faq {
  --faq-rail: 240px;
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

.page-faq .faq-crumb {
  padding: 20px 0 0;
}

.page-faq .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  letter-spacing: .04em;
}

.page-faq .breadcrumb-item {
  color: var(--muted);
}

.page-faq .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 8px;
  color: var(--grid);
}

.page-faq .breadcrumb-item a {
  color: var(--muted);
  text-decoration: none;
}

.page-faq .breadcrumb-item a:hover,
.page-faq .breadcrumb-item a:focus-visible {
  color: var(--cyan);
}

.page-faq .breadcrumb-current {
  color: var(--text);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: 28px 0 52px;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-soft) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: .22;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--cyan-24), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-hero-grid {
  position: relative;
  display: grid;
  gap: 32px;
}

.page-faq .faq-hero-copy {
  min-width: 0;
}

.page-faq .faq-hero h1 {
  margin: 10px 0 18px;
  font-family: var(--font-display);
  font-size: clamp(32px, 7vw, 62px);
  font-weight: 800;
  line-height: 1.03;
  letter-spacing: -.01em;
  color: var(--text);
  text-wrap: balance;
}

.page-faq .faq-hero .lede {
  margin: 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero-figure {
  position: relative;
  margin: 0;
  padding: 12px;
  border: 1px solid var(--cyan-24);
  border-radius: var(--radius);
  background: rgba(13, 33, 56, .7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  min-width: 0;
}

.page-faq .faq-hero-figure::after {
  content: "INDEX / 06";
  position: absolute;
  top: -10px;
  right: 12px;
  padding: 2px 8px;
  background: var(--orange);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  border-radius: var(--radius);
}

.page-faq .faq-hero-figure img {
  display: block;
  width: 100%;
  border-radius: 1px;
}

.page-faq .faq-hero-figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 索引与问答主体 ---------- */

.page-faq .faq-body {
  padding: 4px 0 72px;
}

.page-faq .faq-body-grid {
  display: grid;
  gap: 28px;
}

.page-faq .faq-rail-inner {
  padding-top: 14px;
  border-top: 1px solid var(--grid-soft);
}

.page-faq .faq-rail-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-rail-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-rail-list li {
  min-width: 0;
}

.page-faq .faq-rail-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 6px;
  border-left: 2px solid transparent;
  color: var(--text);
  font-size: 13.5px;
  line-height: 1.45;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-rail-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-faq .faq-rail-link:hover,
.page-faq .faq-rail-link:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: var(--cyan-12);
}

.page-faq .faq-main {
  min-width: 0;
}

.page-faq .faq-group + .faq-group {
  margin-top: 48px;
  padding-top: 30px;
  border-top: 1px solid var(--grid-soft);
}

.page-faq .faq-group-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 8px;
}

.page-faq .faq-group-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--orange);
}

.page-faq .faq-group .section-title {
  margin: 0;
  font-size: clamp(22px, 4vw, 34px);
  font-weight: 800;
  line-height: 1.15;
  color: var(--text);
}

.page-faq .faq-group-lede {
  max-width: 56ch;
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 图 ---------- */

.page-faq .faq-figure-inline {
  margin: 0 0 18px;
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-700);
}

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

.page-faq .faq-figure-inline figcaption {
  padding: 9px 12px;
  border-top: 1px solid var(--grid-soft);
  background: var(--ink-800);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 手风琴 ---------- */

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

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

.page-faq .faq-question {
  margin: 0;
  font-size: 16px;
  font-weight: 500;
}

.page-faq .accordion-trigger {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  padding: 17px 0;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.55;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-q-num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan);
  transform: translateY(3px);
}

.page-faq .accordion-trigger::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--cyan);
  transition: color var(--dur) var(--ease);
}

.page-faq .accordion-trigger:hover,
.page-faq .accordion-trigger:focus-visible {
  color: var(--cyan);
}

.page-faq .accordion-trigger:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .accordion-trigger[aria-expanded="true"] {
  color: var(--cyan);
}

.page-faq .accordion-trigger[aria-expanded="true"]::after {
  content: "−";
  color: var(--orange);
}

.page-faq .accordion-panel {
  margin: 0 0 18px;
  padding: 16px 16px 16px 18px;
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius);
  background: var(--paper-light);
  color: var(--ink-800);
  font-size: 15px;
  line-height: 1.8;
}

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

.page-faq .accordion-panel p {
  margin: 0 0 10px;
}

.page-faq .accordion-panel p:last-child {
  margin-bottom: 0;
}

.page-faq .accordion-panel strong {
  color: var(--ink-900);
  font-weight: 700;
}

.page-faq .accordion-panel a {
  color: var(--ink-700);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: var(--orange);
}

.page-faq .accordion-panel a:hover,
.page-faq .accordion-panel a:focus-visible {
  color: var(--orange);
}

/* ---------- 导出格式标签 ---------- */

.page-faq .fmt-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 16px;
}

.page-faq .fmt-tag {
  padding: 3px 9px;
  border-radius: var(--radius);
  background: var(--orange);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
}

/* ---------- 联系支持 ---------- */

.page-faq .faq-contact-card {
  display: grid;
  gap: 16px;
  padding: 24px 20px;
  border-left: 4px solid var(--orange);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink-900);
}

.page-faq .faq-contact-block {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.page-faq .faq-contact-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-600);
}

.page-faq .faq-contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.page-faq .faq-contact-value {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink-900);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact-value--mono {
  font-family: var(--font-mono);
  letter-spacing: .03em;
}

.page-faq .faq-contact-note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-700);
}

.page-faq .faq-contact-note a {
  color: var(--ink-900);
  text-decoration: underline;
  text-decoration-color: var(--orange);
  text-underline-offset: 3px;
}

.page-faq .faq-contact-note a:hover,
.page-faq .faq-contact-note a:focus-visible {
  color: var(--orange);
}

.page-faq .copy-btn {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
}

/* ---------- 断点 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 40px 0 64px;
  }

  .page-faq .container.faq-hero-grid {
    gap: 40px;
  }

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

  .page-faq .faq-contact-card {
    padding: 28px 26px;
    gap: 18px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-body-grid {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-faq .faq-rail-inner {
    padding-top: 0;
    padding-left: 14px;
    border-top: 0;
    border-left: 1px solid var(--grid);
  }

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

@media (min-width: 1024px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-hero-figure {
    padding: 14px;
  }

  .page-faq .faq-accordion-wrap,
  .page-faq .faq-main {
    padding-left: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .accordion-trigger,
  .page-faq .faq-rail-link,
  .page-faq .faq-hero-figure {
    transition: none;
  }
}
<<<END>>>