.page-faq {
  --faq-no-w: 38px;
  --faq-sticky-top: 116px;
  --faq-paper-line: #DCD2BD;
  background: var(--ink);
  color: var(--muted);
}

.page-faq a {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 138, 31, .35);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-faq .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(34px, 5vw, 58px) 0 clamp(38px, 5vw, 66px);
  border-bottom: 1px solid var(--line);
  background: var(--ink);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  top: -42%;
  width: 62%;
  height: 190%;
  transform: rotate(8deg);
  background: linear-gradient(160deg, rgba(228, 50, 43, .16), rgba(255, 138, 31, .07) 54%, transparent 74%);
  pointer-events: none;
}

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

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(24px, 4vw, 44px);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--muted);
}

.page-faq .breadcrumb a {
  color: var(--muted);
  border-bottom: 0;
}

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

.page-faq .breadcrumb__sep {
  color: var(--line);
}

.page-faq .faq-hero .eyebrow {
  display: block;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  max-width: 15em;
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: clamp(34px, 7vw, 68px);
  line-height: 1.05;
  letter-spacing: -.012em;
  color: var(--white);
}

.page-faq .faq-hero__lede {
  margin: 22px 0 0;
  max-width: 42em;
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-hero__lede--sub {
  margin-top: 14px;
  font-size: clamp(14px, 1.5vw, 16px);
  color: #8695AC;
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 28px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line-soft);
  list-style: none;
  font-size: 12.5px;
  line-height: 1.5;
  letter-spacing: .06em;
}

.page-faq .faq-hero__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
}

.page-faq .faq-hero__facts .num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0;
  color: var(--neon);
}

/* ---------- 主体双栏 ---------- */

.page-faq .faq-body {
  padding: clamp(40px, 6vw, 78px) 0 clamp(56px, 8vw, 108px);
}

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

/* ---------- 目录 ---------- */

.page-faq .faq-index {
  margin-bottom: 40px;
  padding: 20px 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
}

.page-faq .faq-index__list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__list li + li {
  margin-top: 2px;
}

.page-faq .faq-index a {
  display: flex;
  align-items: baseline;
  gap: 11px;
  padding: 10px 12px;
  border-bottom: 0;
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease),
    border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  color: var(--white);
  background: rgba(184, 255, 60, .07);
  border-left-color: var(--neon);
  transform: translateX(2px);
}

.page-faq .faq-index__dot {
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  margin-top: .45em;
  border-radius: 50%;
  background: var(--orange);
}

.page-faq .faq-index__foot {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 12.5px;
  line-height: 1.65;
  letter-spacing: .02em;
  color: var(--muted);
}

/* ---------- 章节 ---------- */

.page-faq .faq-section {
  scroll-margin-top: calc(var(--faq-sticky-top) + 18px);
}

.page-faq .faq-section + .faq-section {
  margin-top: clamp(48px, 6vw, 82px);
}

.page-faq .faq-section__head {
  padding-top: 22px;
  border-top: 1px solid var(--line);
  margin-bottom: clamp(22px, 3vw, 32px);
}

.page-faq .faq-section__head h2 {
  margin: 12px 0 0;
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: clamp(25px, 3.4vw, 38px);
  line-height: 1.2;
  letter-spacing: -.005em;
  color: var(--white);
}

.page-faq .faq-section__lede {
  margin: 14px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 图 ---------- */

.page-faq .faq-media {
  margin: 0 0 clamp(24px, 3vw, 34px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
}

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

.page-faq .faq-media .media__caption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--muted);
}

/* ---------- 版本对照表 ---------- */

.page-faq .faq-table-wrap {
  margin-bottom: clamp(26px, 3.5vw, 38px);
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.65;
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 16px 18px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-table thead th {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .16em;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.page-faq .faq-table tbody tr:nth-child(even) {
  background: rgba(255, 255, 255, .022);
}

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

.page-faq .faq-table tbody th {
  width: 118px;
  border-right: 1px solid rgba(42, 56, 84, .5);
}

.page-faq .faq-table td {
  color: #A9B5C7;
}

.page-faq .faq-table .ver {
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--neon);
}

.page-faq .faq-table .is-current {
  background: rgba(228, 50, 43, .08);
}

.page-faq .faq-table .is-current .ver {
  color: var(--red);
}

.page-faq .faq-table .tag {
  display: inline-block;
  white-space: nowrap;
}

/* ---------- 问答条目 ---------- */

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

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

.page-faq .faq-item summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 2px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15.5px, 1.8vw, 19px);
  font-weight: 500;
  line-height: 1.48;
  color: var(--white);
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

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

.page-faq .faq-item summary::marker {
  content: "";
}

.page-faq .faq-item summary:hover {
  color: var(--orange);
  transform: translateY(-2px);
}

.page-faq .faq-item__no {
  flex: 0 0 var(--faq-no-w);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--orange);
}

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

.page-faq .faq-item__mark {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--orange);
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__mark {
  transform: rotate(45deg);
}

.page-faq .faq-item__a {
  margin: 0 0 20px var(--faq-no-w);
  padding: 18px 20px;
  border: 1px solid var(--paper-2);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--graphite);
  box-shadow: var(--shadow-1);
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
}

.page-faq .faq-item__a p + p {
  margin-top: 10px;
}

.page-faq .faq-item__a a {
  color: #B4281F;
  border-bottom-color: rgba(180, 40, 31, .4);
}

.page-faq .faq-item__a a:hover {
  color: var(--graphite);
  border-bottom-color: var(--graphite);
}

/* ---------- 设置章节图文 ---------- */

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

.page-faq .faq-split__media {
  margin: 26px 0 0;
  max-width: 300px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
}

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

.page-faq .faq-split__media .media__caption {
  padding: 11px 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--muted);
}

/* ---------- 结尾区块 ---------- */

.page-faq .faq-outro {
  position: relative;
  overflow: hidden;
  margin-top: clamp(52px, 7vw, 92px);
  scroll-margin-top: calc(var(--faq-sticky-top) + 18px);
  padding: clamp(24px, 4vw, 46px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
}

.page-faq .faq-outro::before {
  content: "";
  position: absolute;
  right: -18%;
  bottom: -70%;
  width: 62%;
  height: 230%;
  transform: rotate(-9deg);
  background: linear-gradient(120deg, rgba(255, 138, 31, .14), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-outro__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-faq .faq-outro h2 {
  margin: 12px 0 0;
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: clamp(24px, 3.2vw, 36px);
  line-height: 1.2;
  color: var(--white);
}

.page-faq .faq-outro__copy p {
  margin: 16px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-outro__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.page-faq .faq-outro__actions .btn {
  border-bottom: 0;
}

.page-faq .faq-outro__contact {
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(11, 18, 32, .55);
}

.page-faq .faq-outro__contact > .eyebrow {
  display: block;
}

.page-faq .faq-outro__contact .contact-list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-outro__contact .contact-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-outro__contact .contact-item:last-child {
  border-bottom: 0;
}

.page-faq .faq-outro__contact .contact-item__key {
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--muted);
}

.page-faq .faq-outro__contact .contact-item__val {
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--white);
  word-break: break-word;
}

.page-faq .faq-outro__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 焦点 ---------- */

.page-faq a:focus-visible,
.page-faq summary:focus-visible,
.page-faq .btn:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ---------- 响应式 ---------- */

@media (min-width: 769px) {
  .page-faq .faq-split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(190px, 280px);
    gap: clamp(24px, 3.4vw, 48px);
    align-items: start;
  }

  .page-faq .faq-split__media {
    margin: 0;
    max-width: none;
    position: sticky;
    top: var(--faq-sticky-top);
  }

  .page-faq .faq-outro__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: clamp(30px, 4vw, 64px);
  }

  .page-faq .faq-outro__contact .contact-item {
    grid-template-columns: 84px minmax(0, 1fr);
    align-items: baseline;
    gap: 12px;
  }
}

@media (min-width: 961px) {
  .page-faq .faq-body__grid {
    display: grid;
    grid-template-columns: minmax(200px, 262px) minmax(0, 1fr);
    gap: clamp(36px, 5vw, 78px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky-top);
    margin-bottom: 0;
    max-height: calc(100vh - var(--faq-sticky-top) - 32px);
    overflow-y: auto;
  }
}

@media (max-width: 600px) {
  .page-faq .faq-item__a {
    margin-left: 0;
  }

  .page-faq .faq-item summary {
    gap: 10px;
  }

  .page-faq .faq-item__no {
    flex-basis: 26px;
  }

  .page-faq .faq-hero::after {
    width: 90%;
    right: -30%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item summary,
  .page-faq .faq-index a,
  .page-faq .faq-item__mark {
    transition: none;
  }

  .page-faq .faq-item summary:hover,
  .page-faq .faq-index a:hover {
    transform: none;
  }
}