.page-faq {
  --faq-shadow: 0 10px 26px rgba(6, 13, 28, 0.07);
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding: 20px 0 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--graphite);
}

.page-faq .breadcrumb a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--grid);
  padding-bottom: 2px;
}

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

.page-faq .breadcrumb [aria-current="page"] {
  color: var(--vermilion);
}

/* 首屏 */
.page-faq .faq-hero {
  border-bottom: 1px solid var(--grid);
  background-color: var(--paper);
  background-image: repeating-linear-gradient(90deg, rgba(199, 210, 225, 0.5) 0 1px, transparent 1px 96px);
  overflow: hidden;
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 28px;
  padding: 30px 0 46px;
}

.page-faq .faq-hero__text h1 {
  margin: 14px 0 16px;
  font-size: clamp(32px, 7.4vw, 74px);
  line-height: 1.04;
  font-weight: 900;
  letter-spacing: 0.05em;
  color: var(--ink);
  max-width: 15em;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--graphite);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--graphite);
}

.page-faq .faq-hero__meta li {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-faq .faq-hero__meta .mono {
  font-size: 13px;
  color: var(--ink);
  border-bottom: 2px solid var(--sky);
  padding-bottom: 1px;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-hero__aside {
  position: relative;
  padding: 26px 22px 22px;
  background: var(--ink);
  color: var(--white);
  border-top: 4px solid var(--saffron);
  overflow: hidden;
}

.page-faq .faq-hero__aside::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(143, 195, 236, 0.16) 0 1px, transparent 1px 48px);
  pointer-events: none;
}

.page-faq .faq-hero__aside-eyebrow {
  position: relative;
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--sky);
}

.page-faq .faq-hero__aside h2 {
  position: relative;
  margin: 0 0 16px;
  font-size: clamp(19px, 3.6vw, 24px);
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1.4;
  color: var(--white);
}

.page-faq .faq-hero__quick {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: rgba(143, 195, 236, 0.28);
}

.page-faq .faq-hero__quick a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 48px;
  padding: 10px 12px;
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.5;
  transition: background 0.18s ease, color 0.18s ease;
}

.page-faq .faq-hero__quick a:hover,
.page-faq .faq-hero__quick a:focus-visible {
  background: var(--blue);
  color: var(--white);
}

.page-faq .faq-hero__quick .mono {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--sky);
}

.page-faq .faq-hero__quick a:hover .mono,
.page-faq .faq-hero__quick a:focus-visible .mono {
  color: var(--white);
}

.page-faq .faq-hero__ridge {
  position: relative;
  display: block;
  width: 100%;
  height: 62px;
  margin-top: 18px;
}

/* 章节通用 */
.page-faq .faq-section {
  padding: 44px 0;
}

.page-faq .section-head {
  display: grid;
  gap: 10px;
  margin-bottom: 22px;
}

.page-faq .section-index {
  margin: 0;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--vermilion);
}

.page-faq .section-head h2 {
  margin: 0;
  font-size: clamp(23px, 4.4vw, 36px);
  font-weight: 900;
  letter-spacing: 0.06em;
  line-height: 1.2;
  color: var(--ink);
}

.page-faq .section-head p {
  margin: 0;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--graphite);
}

/* 标签云 */
.page-faq .cloud {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-content: center;
  align-items: center;
  gap: 10px;
  min-height: 190px;
  padding: 24px 18px;
  border: 1px solid var(--grid);
  background: var(--paper);
  overflow: hidden;
}

.page-faq .cloud__texture {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
  filter: saturate(0.55);
}

.page-faq .cloud__tag {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 16px;
  border: 1px solid var(--grid);
  background: var(--white);
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.2;
  letter-spacing: 0.04em;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.page-faq .cloud__tag:hover,
.page-faq .cloud__tag:focus-visible {
  transform: translateY(-2px);
  border-color: var(--ink);
  box-shadow: var(--faq-shadow);
}

.page-faq .cloud__tag--xl {
  padding: 14px 22px;
  font-size: clamp(18px, 3.6vw, 26px);
  font-weight: 900;
  letter-spacing: 0.06em;
  border-width: 2px;
  border-color: var(--ink);
}

.page-faq .cloud__tag--lg {
  padding: 10px 18px;
  font-size: clamp(15px, 2.6vw, 18px);
  font-weight: 700;
}

.page-faq .cloud__tag--md {
  font-size: 13px;
  color: var(--graphite);
}

.page-faq .cloud__tag--install {
  box-shadow: inset 0 -3px 0 var(--blue);
}

.page-faq .cloud__tag--device {
  box-shadow: inset 0 -3px 0 var(--vermilion);
}

.page-faq .cloud__tag--network {
  box-shadow: inset 0 -3px 0 var(--turquoise);
}

.page-faq .cloud__tag--account {
  box-shadow: inset 0 -3px 0 var(--saffron);
}

/* 目录 + 主体 */
.page-faq .faq-layout {
  display: grid;
  gap: 22px;
  padding: 6px 0 8px;
}

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

.page-faq .toc {
  border: 1px solid var(--grid);
  border-left: 3px solid var(--ink);
  background: var(--white);
  padding: 14px 14px 16px;
}

.page-faq .toc__title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--graphite);
}

.page-faq .toc a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 6px;
  color: var(--ink);
  text-decoration: none;
  font-size: 13.5px;
  letter-spacing: 0.03em;
  border-bottom: 1px solid var(--grid);
  transition: color 0.16s ease, padding-left 0.16s ease;
}

.page-faq .toc a:last-child {
  border-bottom: 0;
}

.page-faq .toc a:hover,
.page-faq .toc a:focus-visible {
  color: var(--blue);
  padding-left: 10px;
}

.page-faq .toc a[aria-current="true"] {
  color: var(--vermilion);
  box-shadow: inset 3px 0 0 var(--vermilion);
  padding-left: 10px;
}

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

/* 过滤框 */
.page-faq .filter-field {
  display: grid;
  gap: 8px;
  margin-bottom: 20px;
  padding: 14px;
  border: 1px solid var(--ink);
  background: var(--white);
}

.page-faq .filter-field label {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink);
  font-weight: 700;
}

.page-faq .filter-field input {
  width: 100%;
  min-height: 46px;
  padding: 10px 14px;
  border: 1px solid var(--grid);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--ff-sans);
  font-size: 15px;
}

.page-faq .filter-field input:focus-visible {
  outline: 2px solid var(--vermilion);
  outline-offset: 1px;
}

.page-faq .filter-field__hint {
  margin: 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--graphite);
}

/* 分组 */
.page-faq .faq-group {
  padding-bottom: 6px;
  scroll-margin-top: 24px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--grid);
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 8px;
}

.page-faq .faq-group__head .mono {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--vermilion);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-size: clamp(19px, 3.4vw, 26px);
  font-weight: 900;
  letter-spacing: 0.06em;
  color: var(--ink);
}

.page-faq .faq-group__lede {
  margin: 0 0 14px;
  max-width: 42em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--graphite);
}

/* 示意图 */
.page-faq .faq-figure {
  margin: 0 0 16px;
  border: 1px solid var(--grid);
  background: var(--white);
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--grid);
  font-size: 12px;
  line-height: 1.7;
  color: var(--graphite);
}

/* 条目 */
.page-faq .faq-item {
  border: 1px solid var(--grid);
  border-left: 3px solid var(--blue);
  background: var(--white);
  margin-bottom: 10px;
  transition: box-shadow 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-item[open] {
  box-shadow: var(--faq-shadow);
}

.page-faq .faq-item--device {
  border-left-color: var(--vermilion);
}

.page-faq .faq-item--install {
  border-left-color: var(--blue);
}

.page-faq .faq-item--network {
  border-left-color: var(--turquoise);
}

.page-faq .faq-item--account {
  border-left-color: var(--saffron);
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  min-height: 58px;
  padding: 13px 14px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item > summary::after {
  content: "＋";
  font-family: var(--ff-mono);
  font-size: 15px;
  line-height: 1;
  color: var(--blue);
}

.page-faq .faq-item[open] > summary::after {
  content: "－";
  color: var(--vermilion);
}

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

.page-faq .faq-item__no {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--graphite);
}

.page-faq .faq-item__title {
  font-size: 14.5px;
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: 0.02em;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-faq .faq-item__body {
  display: grid;
  gap: 12px;
  padding: 14px 14px 18px;
  border-top: 1px solid var(--grid);
}

.page-faq .faq-item__row {
  display: grid;
  gap: 4px;
}

.page-faq .faq-item__row p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--graphite);
}

.page-faq .faq-item__label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink);
}

.page-faq .faq-item__label::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--sky);
}

.page-faq .faq-item--device .faq-item__label::before {
  background: var(--vermilion);
}

.page-faq .faq-item--network .faq-item__label::before {
  background: var(--turquoise);
}

.page-faq .faq-item--account .faq-item__label::before {
  background: var(--saffron);
}

.page-faq .faq-steps {
  display: grid;
  gap: 8px;
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: 2.4em minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .faq-steps .mono {
  padding-top: 0.2em;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--blue);
}

.page-faq [data-filter-empty] {
  margin: 18px 0 0;
  padding: 16px;
  border: 1px dashed var(--grid);
  background: var(--white);
  font-size: 14px;
  line-height: 1.7;
  color: var(--graphite);
}

/* 提交前的准备 */
.page-faq .faq-prepare {
  border-top: 1px solid var(--grid);
  background: var(--paper);
}

.page-faq .prep-grid {
  display: grid;
  gap: 12px;
}

.page-faq .prep-item {
  position: relative;
  padding: 16px 16px 18px;
  border: 1px solid var(--grid);
  border-top: 3px solid var(--ink);
  background: var(--white);
}

.page-faq .prep-item__no {
  display: block;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--vermilion);
  margin-bottom: 6px;
}

.page-faq .prep-item h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--ink);
}

.page-faq .prep-item p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--graphite);
}

.page-faq .prep-copy {
  display: grid;
  gap: 14px;
  margin-top: 22px;
  padding: 18px;
  background: var(--ink);
  color: var(--paper);
  border-top: 4px solid var(--turquoise);
}

.page-faq .prep-copy__text {
  margin: 0;
  padding: 14px;
  background: rgba(6, 13, 28, 0.6);
  border: 1px solid rgba(143, 195, 236, 0.4);
  font-family: var(--ff-mono);
  font-size: 13px;
  line-height: 1.9;
  color: var(--white);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.page-faq .prep-copy__side {
  display: grid;
  gap: 8px;
  align-content: start;
}

.page-faq .prep-copy .copy-btn {
  min-height: 46px;
  padding: 10px 20px;
  border: 1px solid var(--turquoise);
  background: var(--turquoise);
  color: var(--ink-deep);
  font-family: var(--ff-sans);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease;
}

.page-faq .prep-copy .copy-btn:hover,
.page-faq .prep-copy .copy-btn:focus-visible {
  background: var(--white);
  color: var(--ink);
}

.page-faq .prep-copy .copy-btn:focus-visible {
  outline: 2px solid var(--vermilion);
  outline-offset: 2px;
}

.page-faq .prep-copy .copy-status {
  min-height: 18px;
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--saffron);
}

.page-faq .prep-copy__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(251, 247, 239, 0.82);
  overflow-wrap: anywhere;
}

.page-faq .prep-copy__note .mono {
  color: var(--white);
}

/* 后续入口 */
.page-faq .next-links {
  display: grid;
  gap: 1px;
  margin-top: 26px;
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-faq .next-links__title {
  margin: 0;
  padding: 10px 14px;
  background: var(--paper);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--graphite);
}

.page-faq .next-links a {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 12px 14px;
  background: var(--white);
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.6;
  border-left: 3px solid transparent;
  transition: border-color 0.16s ease, color 0.16s ease, background 0.16s ease;
}

.page-faq .next-links a:hover,
.page-faq .next-links a:focus-visible {
  border-left-color: var(--vermilion);
  color: var(--blue);
}

/* 平板与桌面 */
@media (min-width: 720px) {
  .page-faq .faq-hero__inner {
    padding: 40px 0 56px;
  }

  .page-faq .cloud {
    padding: 30px 26px;
  }

  .page-faq .prep-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .page-faq .prep-copy {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
    align-items: start;
    gap: 20px;
    padding: 22px;
  }

  .page-faq .faq-item__body {
    padding: 16px 18px 20px;
  }

  .page-faq .next-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .next-links__title {
    grid-column: 1 / -1;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.9fr);
    align-items: start;
    gap: 40px;
    padding: 46px 0 62px;
  }

  .page-faq .faq-hero__aside {
    padding: 30px 26px 26px;
  }

  .page-faq .faq-layout {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 40px;
    padding: 34px 0 20px;
  }

  .page-faq .faq-aside {
    position: sticky;
    top: 24px;
    align-self: start;
  }

  .page-faq .faq-section {
    padding: 56px 0;
  }

  .page-faq .prep-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .next-links {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-item__title {
    font-size: 15.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .cloud__tag,
  .page-faq .faq-item,
  .page-faq .toc a,
  .page-faq .next-links a {
    transition: none;
  }

  .page-faq .cloud__tag:hover,
  .page-faq .cloud__tag:focus-visible {
    transform: none;
  }
}
<<<END>>>