.page-faq {
  --faq-line: rgba(18, 59, 87, .8);
  --faq-line-soft: rgba(18, 59, 87, .5);
  --faq-card: linear-gradient(158deg, rgba(11, 39, 64, .92), rgba(6, 24, 38, .9));
  background: var(--deep);
  color: var(--ice);
  padding-bottom: clamp(2rem, 5vw, 3.5rem);
}

.page-faq [id] {
  scroll-margin-top: 1.5rem;
}

.page-faq .crumbs {
  padding-top: 1.15rem;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(1.25rem, 3vw, 2rem) 0 clamp(2.25rem, 5vw, 4rem);
  border-bottom: 1px solid var(--faq-line);
  background:
    radial-gradient(120% 90% at 10% 0%, rgba(48, 213, 230, .13), transparent 58%),
    radial-gradient(90% 70% at 100% 8%, rgba(90, 95, 224, .16), transparent 62%);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(18, 59, 87, .38) 1px, transparent 1px);
  background-size: 100% 64px;
  opacity: .55;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .75), transparent 88%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .75), transparent 88%);
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
}

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

.page-faq .faq-hero h1 {
  margin: .55rem 0 1rem;
  font-family: var(--font-head);
  font-size: clamp(1.85rem, 5.4vw, 3.4rem);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: .01em;
  color: var(--ice);
}

.page-faq .faq-hero .lede {
  max-width: 40ch;
  margin: 0;
  color: var(--mist);
  font-size: clamp(.97rem, 1.6vw, 1.05rem);
  line-height: 1.85;
}

.page-faq .faq-hero__media {
  align-self: center;
}

/* 三个入口 */
.page-faq .faq-entry {
  display: grid;
  gap: .7rem;
  margin-top: clamp(1.5rem, 3vw, 2.2rem);
}

.page-faq .faq-entry__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: .85rem;
  padding: .9rem 1.05rem;
  border: 1px solid var(--hair);
  border-radius: var(--r-md);
  background: var(--faq-card);
  color: var(--ice);
  text-decoration: none;
  transition: border-color .25s ease, box-shadow .25s ease, transform .25s ease;
}

.page-faq .faq-entry__item:hover,
.page-faq .faq-entry__item:focus-visible {
  border-color: rgba(48, 213, 230, .55);
  box-shadow: var(--glow-cyan);
  transform: translateY(-2px);
}

.page-faq .faq-entry__item--archive:hover,
.page-faq .faq-entry__item--archive:focus-visible {
  border-color: rgba(245, 193, 92, .55);
  box-shadow: 0 0 0 1px rgba(245, 193, 92, .35), 0 0 26px rgba(245, 193, 92, .14);
}

.page-faq .faq-entry__node {
  width: .62rem;
  height: .62rem;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 .28rem rgba(48, 213, 230, .16);
}

.page-faq .faq-entry__item--archive .faq-entry__node {
  background: var(--amber);
  box-shadow: 0 0 0 .28rem rgba(245, 193, 92, .16);
}

.page-faq .faq-entry__text {
  display: grid;
  gap: .18rem;
  min-width: 0;
}

.page-faq .faq-entry__label {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: .97rem;
  letter-spacing: .01em;
  color: var(--ice);
}

.page-faq .faq-entry__desc {
  color: var(--mist);
  font-size: .83rem;
  line-height: 1.55;
}

.page-faq .faq-entry__arrow {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--cyan);
}

.page-faq .faq-entry__item--archive .faq-entry__arrow {
  color: var(--amber);
}

/* ---------- 图片容器 ---------- */
.page-faq .faq-fig {
  margin: 0;
  border: 1px solid var(--hair);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: linear-gradient(160deg, rgba(12, 61, 70, .55), rgba(6, 24, 38, .92));
  box-shadow: var(--shadow-panel);
}

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

.page-faq .faq-fig__cap {
  padding: .7rem 1rem;
  border-top: 1px solid var(--hair);
  font-size: .78rem;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 五类目录 ---------- */
.page-faq .doc-index {
  padding: clamp(2.25rem, 5.5vw, 4.5rem) 0 clamp(1rem, 2.5vw, 1.75rem);
}

.page-faq .doc-index__head {
  max-width: 46rem;
  margin-bottom: clamp(1.5rem, 3.5vw, 2.5rem);
}

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

.page-faq .doc-row {
  display: grid;
  gap: .55rem 1.75rem;
  padding: 1.4rem .25rem;
  border-top: 1px solid var(--faq-line-soft);
  transition: background .25s ease;
}

.page-faq .doc-row:hover {
  background: rgba(18, 59, 87, .16);
}

.page-faq .doc-row__id {
  margin: 0;
  font-size: .88rem;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-faq .doc-row__body h3 {
  margin: 0 0 .4rem;
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ice);
}

.page-faq .doc-row__body p {
  margin: 0 0 .5rem;
  color: var(--mist);
  font-size: .92rem;
  line-height: 1.78;
}

.page-faq .doc-row__body p.doc-row__when {
  color: var(--mint);
  font-size: .8rem;
  letter-spacing: .02em;
  margin-bottom: 0;
}

.page-faq .doc-row__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: 0;
  padding: 0;
}

.page-faq .doc-row__list li {
  padding: .26rem .66rem;
  border: 1px solid var(--hair);
  border-radius: 999px;
  background: rgba(18, 59, 87, .42);
  color: var(--ice);
  font-size: .78rem;
  line-height: 1.5;
}

/* ---------- 帮助文档阅读区 ---------- */
.page-faq .kb {
  padding: clamp(2.25rem, 5.5vw, 4.5rem) 0;
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
  background: linear-gradient(180deg, rgba(12, 61, 70, .55), rgba(6, 24, 38, 0) 72%);
}

.page-faq .kb__head {
  max-width: 44rem;
  margin-bottom: clamp(1.5rem, 3.5vw, 2.25rem);
}

.page-faq .kb__shell {
  display: grid;
  gap: 1.1rem;
}

.page-faq .kb__side {
  border: 1px solid var(--hair);
  border-radius: var(--r-md);
  padding: 1rem .85rem;
  background: linear-gradient(160deg, rgba(12, 61, 70, .95), rgba(6, 24, 38, .88));
}

.page-faq .kb__side-title {
  margin: 0 0 .6rem;
  padding: 0 .55rem;
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mint);
}

.page-faq .kb__side a {
  display: block;
  padding: .42rem .6rem;
  border-left: 2px solid transparent;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  color: var(--mist);
  font-size: .87rem;
  line-height: 1.5;
  text-decoration: none;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.page-faq .kb__side a:hover,
.page-faq .kb__side a:focus-visible {
  color: var(--ice);
  border-left-color: var(--cyan);
  background: rgba(48, 213, 230, .1);
}

.page-faq .kb__side-note {
  margin: .9rem .55rem 0;
  padding-top: .8rem;
  border-top: 1px solid var(--hair);
  color: var(--mist);
  font-size: .78rem;
  line-height: 1.65;
}

.page-faq .kb__side-note a {
  display: inline;
  padding: 0;
  border-left: 0;
  border-radius: 0;
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .kb__main {
  padding: clamp(1.15rem, 3vw, 2.1rem);
  border: 1px solid var(--hair);
  border-radius: var(--r-lg);
  background: var(--faq-card);
  min-width: 0;
}

.page-faq .kb__main h3 {
  margin: 1.85rem 0 .6rem;
  font-family: var(--font-head);
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--ice);
}

.page-faq .kb__main h3:first-of-type {
  margin-top: 0;
}

.page-faq .kb__main p {
  margin: 0 0 .85rem;
  color: var(--mist);
  font-size: .94rem;
  line-height: 1.86;
}

.page-faq .kb__main ul,
.page-faq .kb__main ol {
  margin: .4rem 0 1rem;
  padding-left: 1.2rem;
}

.page-faq .kb__main li {
  margin-bottom: .4rem;
  color: var(--mist);
  font-size: .93rem;
  line-height: 1.8;
}

.page-faq .kb__note {
  margin: .9rem 0 1.4rem;
  padding: .8rem 1rem;
  border-left: 3px solid var(--amber);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(245, 193, 92, .09);
  color: var(--ice);
  font-size: .89rem;
  line-height: 1.78;
}

/* ---------- 常见问题 ---------- */
.page-faq .faq-ask {
  padding: clamp(2.25rem, 5.5vw, 4.5rem) 0;
}

.page-faq .faq-ask__head {
  max-width: 44rem;
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

.page-faq .faq-tabs .tabs__list {
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  padding: 0 0 .75rem;
  scrollbar-width: thin;
}

.page-faq .faq-tabs .tabs__tab {
  flex: 0 0 auto;
  padding: .55rem 1.05rem;
  border: 1px solid var(--hair);
  border-radius: 999px;
  background: rgba(18, 59, 87, .35);
  color: var(--mist);
  font-family: var(--font-head);
  font-size: .86rem;
  font-weight: 600;
  letter-spacing: .02em;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}

.page-faq .faq-tabs .tabs__tab:hover {
  color: var(--ice);
  border-color: rgba(48, 213, 230, .45);
}

.page-faq .faq-tabs .tabs__tab[aria-selected="true"] {
  background: var(--indigo);
  border-color: var(--indigo);
  color: var(--ice);
}

.page-faq .tabs__panel:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
  border-radius: var(--r-sm);
}

.page-faq .qa-group {
  border-top: 1px solid var(--faq-line-soft);
  margin-top: .2rem;
}

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

.page-faq .qa > summary {
  position: relative;
  padding: .95rem 2.2rem .95rem .15rem;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-head);
  font-size: .96rem;
  font-weight: 600;
  color: var(--ice);
  transition: color .2s ease;
}

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

.page-faq .qa > summary::after {
  content: "+";
  position: absolute;
  right: .35rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--cyan);
}

.page-faq .qa[open] > summary {
  color: var(--cyan);
}

.page-faq .qa[open] > summary::after {
  content: "–";
}

.page-faq .qa p {
  margin: 0 0 .95rem;
  padding-right: 1.25rem;
  color: var(--mist);
  font-size: .91rem;
  line-height: 1.85;
}

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

/* ---------- 旧版资料时间线 ---------- */
.page-faq .archive {
  padding: clamp(2.25rem, 5.5vw, 4.5rem) 0;
  border-top: 1px solid var(--faq-line);
  background: linear-gradient(180deg, rgba(90, 31, 61, .32), rgba(6, 24, 38, 0) 70%);
}

.page-faq .archive__head {
  max-width: 46rem;
  margin-bottom: clamp(1.5rem, 3.5vw, 2.5rem);
}

.page-faq .archive__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.75rem);
}

.page-faq .timeline {
  --tl-pad: 2rem;
  position: relative;
  padding-left: var(--tl-pad);
  min-width: 0;
}

.page-faq .timeline::before {
  content: "";
  position: absolute;
  left: .4rem;
  top: .6rem;
  bottom: .6rem;
  width: 2px;
  background: linear-gradient(180deg, var(--mint), rgba(18, 59, 87, .6));
}

.page-faq .tl-node {
  position: relative;
  margin-bottom: 1.75rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--hair);
  border-radius: var(--r-md);
  background: var(--faq-card);
}

.page-faq .tl-node:last-child {
  margin-bottom: 0;
}

.page-faq .tl-node::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--tl-pad) + .4rem + 1px - .375rem);
  top: 1.5rem;
  width: .75rem;
  height: .75rem;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 .3rem rgba(98, 224, 174, .16);
}

.page-faq .tl-node--maint::before {
  background: var(--amber);
  box-shadow: 0 0 0 .3rem rgba(245, 193, 92, .16);
}

.page-faq .tl-node__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .55rem;
  margin-bottom: .55rem;
}

.page-faq .tl-node__ver {
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: .07em;
  color: var(--ice);
}

.page-faq .tl-node__desc {
  margin: 0 0 .75rem;
  color: var(--mist);
  font-size: .92rem;
  line-height: 1.82;
}

.page-faq .tl-node__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: 0;
  padding: 0;
}

.page-faq .tl-node__list li {
  padding: .24rem .62rem;
  border: 1px solid var(--hair);
  border-radius: 999px;
  background: rgba(6, 24, 38, .7);
  color: var(--ice);
  font-size: .77rem;
  line-height: 1.5;
}

.page-faq .archive__media {
  align-self: start;
}

/* ---------- 联系支持前 ---------- */
.page-faq .prep-section {
  padding: clamp(2.25rem, 5.5vw, 4.5rem) 0 clamp(1.75rem, 4vw, 3rem);
}

.page-faq .prep-section__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.page-faq .prep {
  list-style: none;
  counter-reset: prep;
  display: grid;
  gap: .75rem;
  margin: 1.35rem 0 0;
  padding: 0;
}

.page-faq .prep li {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: .8rem;
  align-items: start;
  padding: .85rem 1rem;
  border: 1px solid var(--hair);
  border-radius: var(--r-md);
  background: rgba(11, 39, 64, .58);
}

.page-faq .prep__k {
  padding-top: .15rem;
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-faq .prep strong {
  display: block;
  margin-bottom: .22rem;
  color: var(--ice);
  font-size: .94rem;
  font-family: var(--font-head);
}

.page-faq .prep p {
  margin: 0;
  color: var(--mist);
  font-size: .85rem;
  line-height: 1.72;
}

.page-faq .prep__panel {
  padding: 1.35rem;
  border: 1px solid var(--hair);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, rgba(12, 61, 70, .95), rgba(6, 24, 38, .92));
}

.page-faq .prep__panel-title {
  margin: 0 0 .9rem;
  font-family: var(--font-head);
  font-size: .76rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mint);
}

.page-faq .prep__panel .contact-line {
  margin: 0 0 .55rem;
}

.page-faq .prep__panel .btn {
  margin-top: .9rem;
}

.page-faq .prep__note {
  margin: .95rem 0 0;
  color: var(--mist);
  font-size: .79rem;
  line-height: 1.7;
}

.page-faq .next-links {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
  padding-top: clamp(1.25rem, 3vw, 1.75rem);
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .next-links a {
  padding: .48rem .95rem;
  border: 1px solid var(--hair);
  border-radius: 999px;
  background: rgba(18, 59, 87, .4);
  color: var(--ice);
  font-size: .84rem;
  text-decoration: none;
  transition: border-color .2s ease, color .2s ease;
}

.page-faq .next-links a:hover,
.page-faq .next-links a:focus-visible {
  border-color: rgba(48, 213, 230, .55);
  color: var(--cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .doc-row {
    grid-template-columns: 3.2rem minmax(0, 1.2fr) minmax(0, .9fr);
    align-items: start;
  }

  .page-faq .faq-entry {
    max-width: 42rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-faq .kb__shell {
    grid-template-columns: 15.5rem minmax(0, 1fr);
    gap: 2.25rem;
    align-items: start;
  }

  .page-faq .kb__side {
    position: sticky;
    top: 1.25rem;
  }

  .page-faq .archive__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .85fr);
    align-items: start;
  }

  .page-faq .prep-section__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .8fr);
    align-items: start;
  }
}

@media (min-width: 1120px) {
  .page-faq .doc-row {
    grid-template-columns: 3.6rem minmax(0, 1.15fr) minmax(0, .95fr);
  }
}

@media (max-width: 380px) {
  .page-faq .faq-entry__item {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .page-faq .faq-entry__arrow {
    display: none;
  }

  .page-faq .tl-node {
    padding: .85rem .9rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-entry__item,
  .page-faq .doc-row,
  .page-faq .kb__side a,
  .page-faq .faq-tabs .tabs__tab,
  .page-faq .next-links a {
    transition: none;
  }
}