.page-faq {
  --faq-measure: 66ch;
  --faq-rhythm: clamp(40px, 6.5vw, 76px);
}

/* ---------- 面包屑 ---------- */
.page-faq .crumbs {
  padding-top: clamp(22px, 4vw, 40px);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--muted);
}

.page-faq .crumbs a {
  color: var(--muted);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}

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

.page-faq .crumbs a:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
  border-radius: 2px;
}

.page-faq .crumbs__sep {
  margin: 0 10px;
  color: var(--line);
}

.page-faq .crumbs__now {
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(30px, 5.5vw, 62px) 0 clamp(34px, 5.5vw, 68px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(33px, 6.4vw, 58px);
  line-height: 1.05;
  letter-spacing: .01em;
  color: var(--paper);
  max-width: 22ch;
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 主体窄栏 ---------- */
.page-faq .faq-body {
  position: relative;
  width: 100%;
  max-width: var(--faq-measure);
}

@media (min-width: 1080px) {
  .page-faq .faq-body {
    padding-left: 26px;
  }

  .page-faq .faq-body::before {
    content: "";
    position: absolute;
    left: 0;
    top: 12px;
    bottom: 12px;
    width: 1px;
    background: linear-gradient(to bottom, transparent, var(--line) 5%, var(--line) 95%, transparent);
    pointer-events: none;
  }
}

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  padding: var(--faq-rhythm) 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-section--last {
  border-bottom: 0;
  padding-bottom: clamp(30px, 4vw, 48px);
}

.page-faq .faq-section__head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-bottom: 26px;
}

.page-faq .faq-section__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--lava);
}

.page-faq .faq-section__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.18;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-faq .faq-section__sub {
  margin: 10px 0 0;
  max-width: 54ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

@media (min-width: 860px) {
  .page-faq .faq-section__head {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 26px;
    margin-bottom: 34px;
  }

  .page-faq .faq-section__no {
    font-size: 44px;
    padding-top: 4px;
  }
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0 0 32px;
  overflow: hidden;
  background: var(--panel);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-figure--glossary {
  margin-bottom: 28px;
}

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

.page-faq .faq-figure .media-frame__caption {
  padding: 12px 2px 14px;
  font-size: 12.5px;
  letter-spacing: .05em;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 展开组 ---------- */
.page-faq .faq-list {
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-item__details {
  display: block;
}

.page-faq .disclosure__trigger {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  margin: 0;
  padding: 20px 6px 20px 16px;
  border: 0;
  border-left: 3px solid transparent;
  background: transparent;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
  text-align: left;
  cursor: pointer;
  list-style: none;
  transition: background-color var(--t) var(--ease),
              border-left-color var(--t) var(--ease),
              padding-left var(--t) var(--ease);
}

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

.page-faq .disclosure__trigger::marker {
  content: "";
}

.page-faq .disclosure__trigger:hover {
  background: rgba(10, 42, 50, .62);
  border-left-color: var(--line);
}

.page-faq .disclosure__trigger:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: -2px;
}

.page-faq .faq-item__details[open] > .disclosure__trigger {
  border-left-color: var(--cyan);
  background: rgba(10, 42, 50, .55);
  padding-left: 20px;
}

.page-faq .faq-item__q {
  display: block;
  min-width: 0;
}

.page-faq .disclosure__sign {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 5px;
}

.page-faq .disclosure__sign::before,
.page-faq .disclosure__sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--muted);
  transition: transform var(--t) var(--ease),
              background-color var(--t) var(--ease),
              opacity var(--t) var(--ease);
}

.page-faq .disclosure__sign::before {
  width: 16px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.page-faq .disclosure__sign::after {
  width: 2px;
  height: 16px;
  transform: translate(-50%, -50%);
}

.page-faq .disclosure__trigger:hover .disclosure__sign::before,
.page-faq .disclosure__trigger:hover .disclosure__sign::after {
  background: var(--paper);
}

.page-faq .faq-item__details[open] .disclosure__sign::before {
  background: var(--cyan);
}

.page-faq .faq-item__details[open] .disclosure__sign::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.page-faq .disclosure__panel {
  overflow: hidden;
}

.page-faq .disclosure__inner {
  padding: 0 26px 26px 20px;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .disclosure__inner p {
  margin: 0;
}

.page-faq .disclosure__inner p + p {
  margin-top: 12px;
}

.page-faq .disclosure__inner a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(37, 240, 210, .38);
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.page-faq .disclosure__inner a:hover,
.page-faq .disclosure__inner a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

.page-faq .disclosure__inner a:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

/* ---------- 术语速查表 ---------- */
.page-faq .faq-glossary {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(10, 42, 50, .55), rgba(4, 22, 27, 0) 46%);
}

.page-faq .faq-glossary__table {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
  font-size: 15px;
}

.page-faq .faq-glossary__table thead th {
  padding: 12px 14px;
  text-align: left;
  font-family: var(--font-body);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: .08em;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.page-faq .faq-glossary__table tbody th,
.page-faq .faq-glossary__table tbody td {
  padding: 13px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(22, 66, 76, .7);
  line-height: 1.7;
}

.page-faq .faq-glossary__table tbody th {
  font-weight: 500;
  color: var(--paper);
  white-space: nowrap;
}

.page-faq .faq-glossary__table tbody td {
  color: var(--muted);
}

.page-faq .faq-glossary__table tbody tr:nth-child(even) {
  background: rgba(10, 42, 50, .5);
}

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

.page-faq .faq-glossary__table tbody tr:hover {
  background: rgba(37, 240, 210, .07);
}

.page-faq .faq-glossary__table tbody tr:hover th {
  box-shadow: inset 3px 0 0 var(--cyan);
}

.page-faq .is-term-en {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--cyan);
  white-space: nowrap;
}

/* ---------- 注释带 ---------- */
.page-faq .faq-note {
  margin-top: 26px;
  padding: 14px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  letter-spacing: .04em;
}

.page-faq .faq-note .note-band__key {
  color: var(--amber);
}

.page-faq .faq-note .note-band__val {
  color: var(--muted);
}

/* ---------- 页尾引导 ---------- */
.page-faq .faq-tail {
  padding: clamp(28px, 4vw, 44px) 0 clamp(44px, 6vw, 72px);
  border-top: 1px solid var(--line);
  max-width: var(--faq-measure);
}

.page-faq .faq-tail__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-tail__text a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(37, 240, 210, .38);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-faq .faq-tail__text a:hover,
.page-faq .faq-tail__text a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

.page-faq .faq-tail__text a:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

/* ---------- 中等屏幕 ---------- */
@media (min-width: 700px) {
  .page-faq .disclosure__trigger {
    padding: 23px 8px 23px 20px;
    font-size: 16.5px;
  }

  .page-faq .faq-item__details[open] > .disclosure__trigger {
    padding-left: 24px;
  }

  .page-faq .disclosure__inner {
    padding: 0 40px 30px 24px;
  }
}

/* ---------- 减少动态 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .disclosure__trigger,
  .page-faq .disclosure__sign::before,
  .page-faq .disclosure__sign::after,
  .page-faq .crumbs a,
  .page-faq .disclosure__inner a,
  .page-faq .faq-tail__text a {
    transition: none;
  }

  .page-faq .faq-item__details[open] > .disclosure__trigger {
    padding-left: 16px;
  }
}
<<<END>>>