.page-faq {
  --faq-gap: clamp(2.5rem, 6vw, 4.5rem);
  --faq-line: rgba(47, 243, 208, 0.28);
  background: var(--ink-900);
  color: var(--warm);
  padding-bottom: clamp(3rem, 8vw, 6rem);
  overflow-x: hidden;
}

/* 面包屑 */
.page-faq .breadcrumbs {
  padding-top: 1.1rem;
}
.page-faq .breadcrumbs-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: var(--fs-13);
  letter-spacing: 0.08em;
  color: var(--fog);
}
.page-faq .breadcrumbs-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--fog);
}
.page-faq .breadcrumbs-item + .breadcrumbs-item::before {
  content: "/";
  color: var(--ink-700);
}
.page-faq .breadcrumbs-item a {
  color: var(--fog);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}
.page-faq .breadcrumbs-item a:hover,
.page-faq .breadcrumbs-item a:focus-visible {
  color: var(--cyan);
}
.page-faq .breadcrumbs-item [aria-current="page"] {
  color: var(--cyan);
}

/* 首屏 */
.page-faq .faq-hero {
  display: grid;
  gap: 2rem;
  padding-top: clamp(1.5rem, 4vw, 2.75rem);
  padding-bottom: var(--faq-gap);
}
.page-faq .faq-hero__text h1 {
  margin: 0.75rem 0 1.25rem;
  color: var(--warm);
}
.page-faq .faq-hero__text .lede {
  max-width: 34em;
  color: var(--fog);
}
.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}
.page-faq .faq-hero__media {
  margin: 0;
  position: relative;
}
.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: var(--edge);
  border-radius: var(--radius);
  clip-path: polygon(0 0, 100% 4%, 100% 100%, 0 96%);
  box-shadow: var(--shadow-soft);
}
.page-faq .faq-hero__media figcaption {
  margin-top: 0.9rem;
  font-size: var(--fs-13);
  letter-spacing: 0.04em;
  color: var(--fog);
}

/* 数据摘要条 */
.page-faq .faq-meta {
  border-top: var(--edge);
  border-bottom: var(--edge);
}
.page-faq .faq-meta__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--ink-700);
}
.page-faq .faq-meta__item {
  background: var(--ink-900);
  padding: 1.05rem 1rem 1.15rem;
}
.page-faq .faq-meta__value {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-28);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--warm);
}
.page-faq .faq-meta__unit {
  font-family: var(--font-data);
  font-size: var(--fs-13);
  color: var(--cyan);
  margin-left: 0.2rem;
}
.page-faq .faq-meta__label {
  display: block;
  margin-top: 0.4rem;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--fog);
}

/* 三步排查 */
.page-faq .faq-steps-block {
  padding-top: var(--faq-gap);
}
.page-faq .faq-sec-head h2 {
  margin: 0.6rem 0 1rem;
  color: var(--warm);
  max-width: 22em;
}
.page-faq .faq-sec-sub {
  max-width: 42em;
  margin: 0;
  color: var(--fog);
  font-size: var(--fs-16);
  line-height: 1.8;
}
.page-faq .stepbar {
  display: grid;
  gap: 1.5rem;
  margin: 2.25rem 0 0;
  padding: 0;
  list-style: none;
}
.page-faq .stepbar__item {
  border-top: 2px solid var(--ink-700);
  padding-top: 1.15rem;
  transition: border-color var(--t-mid) var(--ease);
}
.page-faq .stepbar__item:hover {
  border-top-color: var(--cyan);
}
.page-faq .stepbar__num {
  display: block;
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-28);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--cyan);
}
.page-faq .stepbar__title {
  margin: 0.5rem 0 0.6rem;
  font-size: var(--fs-20);
  font-weight: 700;
  color: var(--warm);
}
.page-faq .stepbar__text {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--fog);
}

/* 主体双栏 */
.page-faq .faq-body {
  display: grid;
  gap: 2rem;
  padding-top: var(--faq-gap);
}
.page-faq .faq-aside {
  min-width: 0;
}
.page-faq .faq-index {
  display: flex;
  flex-direction: row;
  gap: 0.4rem;
  overflow-x: auto;
  border: 0;
  border-bottom: var(--edge);
  padding: 0 0 0.85rem;
  background: transparent;
  scrollbar-width: thin;
}
.page-faq .faq-index .anchor-nav__title {
  display: none;
}
.page-faq .faq-index .anchor-nav__link {
  flex: 0 0 auto;
  display: block;
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius);
  font-size: var(--fs-13);
  letter-spacing: 0.08em;
  white-space: nowrap;
  color: var(--fog);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.page-faq .faq-index .anchor-nav__link:hover,
.page-faq .faq-index .anchor-nav__link:focus-visible {
  color: var(--cyan);
  background: rgba(47, 243, 208, 0.08);
}
.page-faq .faq-index .anchor-nav__link[aria-current="true"] {
  color: var(--cyan);
  background: rgba(47, 243, 208, 0.1);
  box-shadow: inset 0 -2px 0 var(--cyan);
}

/* 问题分组 */
.page-faq .faq-group + .faq-group,
.page-faq .faq-group + .faq-support {
  margin-top: 3.5rem;
}
.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  align-items: baseline;
  margin-bottom: 1.35rem;
}
.page-faq .faq-group__num {
  font-family: var(--font-data);
  font-size: var(--fs-13);
  letter-spacing: 0.14em;
  color: var(--orange);
}
.page-faq .faq-group__head h2 {
  grid-column: 2;
  margin: 0;
  color: var(--warm);
}
.page-faq .faq-group__intro {
  grid-column: 2;
  margin: 0.75rem 0 0;
  max-width: 38em;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--fog);
}

/* 手风琴 */
.page-faq .faq-item {
  position: relative;
  border-top: var(--edge);
}
.page-faq .faq-item:last-of-type {
  border-bottom: var(--edge);
}
.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1.15rem 2.4rem 1.15rem 0.25rem;
  list-style: none;
  cursor: pointer;
  font-size: var(--fs-18);
  font-weight: 600;
  line-height: 1.6;
  color: var(--warm);
  transition: color var(--t-fast) var(--ease);
}
.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item > summary::after {
  content: "+";
  position: absolute;
  right: 0.3rem;
  top: 1rem;
  font-family: var(--font-data);
  font-size: var(--fs-20);
  color: var(--cyan);
  line-height: 1.6;
}
.page-faq .faq-item[open] > summary::after {
  content: "−";
}
.page-faq .faq-item[open] > summary,
.page-faq .faq-item > summary:hover {
  color: var(--cyan);
}
.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
.page-faq .faq-item[open]::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--cyan);
}
.page-faq .faq-answer {
  margin: 0 0 1.25rem 0.25rem;
  padding: 1rem 1.1rem 1.15rem;
  background: var(--warm);
  color: var(--ink-deep);
  border-radius: var(--radius);
  font-size: var(--fs-16);
  line-height: 1.8;
}
.page-faq .faq-answer p {
  margin: 0;
}
.page-faq .faq-answer p + p,
.page-faq .faq-answer p + .faq-sub {
  margin-top: 0.8em;
}
.page-faq .faq-answer a {
  color: var(--ink-800);
  text-decoration: underline;
  text-decoration-color: var(--cyan);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}
.page-faq .faq-answer a:hover {
  color: var(--ink-900);
}
.page-faq .faq-sub {
  border-top: 1px solid rgba(3, 16, 31, 0.16);
  padding-top: 0.65rem;
}
.page-faq .faq-sub > summary {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  list-style: none;
  cursor: pointer;
  font-size: var(--fs-13);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink-800);
}
.page-faq .faq-sub > summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-sub > summary::after {
  content: "＋";
  color: var(--ink-700);
}
.page-faq .faq-sub[open] > summary::after {
  content: "－";
}
.page-faq .faq-sub > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
.page-faq .faq-sub p {
  margin: 0.55rem 0 0;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--ink-800);
}

/* 收藏分组配图 */
.page-faq .faq-collect {
  display: grid;
  gap: 2rem;
}
.page-faq .faq-collect__main {
  min-width: 0;
}
.page-faq .faq-collect__media {
  margin: 0;
  align-self: start;
}
.page-faq .faq-collect__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: var(--edge);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}
.page-faq .faq-collect__media figcaption {
  margin-top: 0.8rem;
  font-size: var(--fs-13);
  letter-spacing: 0.04em;
  color: var(--fog);
}

/* 支持区块 */
.page-faq .faq-support {
  position: relative;
  overflow: hidden;
  margin-top: 3.5rem;
  padding: clamp(1.35rem, 4vw, 2.5rem);
  border: var(--edge);
  border-radius: var(--radius);
  background: var(--ink-800);
  box-shadow: var(--shadow-soft);
}
.page-faq .faq-support::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -70px;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(47, 243, 208, 0.18), transparent 70%);
  pointer-events: none;
}
.page-faq .faq-support__grid {
  position: relative;
  display: grid;
  gap: 2rem;
}
.page-faq .faq-contacts {
  min-width: 0;
}
.page-faq .faq-contact-line {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--ink-700);
}
.page-faq .faq-contact-label {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--fog);
}
.page-faq .faq-contact-value {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-18);
  color: var(--warm);
  text-decoration: none;
  word-break: break-word;
  transition: color var(--t-fast) var(--ease);
}
.page-faq a.faq-contact-value:hover,
.page-faq a.faq-contact-value:focus-visible {
  color: var(--cyan);
}
.page-faq .faq-support__note {
  margin: 1.1rem 0 0;
  max-width: 40em;
  font-size: var(--fs-13);
  line-height: 1.8;
  color: var(--fog);
}
.page-faq .faq-prepare {
  min-width: 0;
}
.page-faq .faq-prepare__list {
  margin: 0.9rem 0 1.5rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.7rem;
}
.page-faq .faq-prepare__list li {
  position: relative;
  padding-left: 1.25rem;
  font-size: var(--fs-16);
  line-height: 1.7;
  color: var(--warm);
}
.page-faq .faq-prepare__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 2px;
  background: var(--orange);
}

/* 继续浏览 */
.page-faq .faq-next {
  display: grid;
  gap: 0.85rem;
  margin-top: 3rem;
}
.page-faq .faq-next__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 1.2rem;
  border: var(--edge);
  border-radius: var(--radius);
  background: var(--ink-800);
  color: var(--warm);
  text-decoration: none;
  font-size: var(--fs-16);
  transition: transform var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease),
    color var(--t-fast) var(--ease);
}
.page-faq .faq-next__link:hover,
.page-faq .faq-next__link:focus-visible {
  transform: translateY(-2px);
  border-color: var(--cyan);
  color: var(--cyan);
}
.page-faq .faq-next__arrow {
  font-family: var(--font-data);
  color: var(--cyan);
  transition: transform var(--t-fast) var(--ease);
}
.page-faq .faq-next__link:hover .faq-next__arrow,
.page-faq .faq-next__link:focus-visible .faq-next__arrow {
  transform: translateX(4px);
}

@media (min-width: 720px) {
  .page-faq .faq-meta__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-faq .stepbar {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2rem;
  }
  .page-faq .faq-next {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: end;
    gap: 3.5rem;
  }
  .page-faq .faq-collect {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 2.5rem;
  }
  .page-faq .faq-support__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3rem;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 3.5rem;
    align-items: start;
  }
  .page-faq .faq-index {
    position: sticky;
    top: 6rem;
    flex-direction: column;
    overflow: visible;
    border-bottom: 0;
    border-left: var(--edge);
    padding: 0.25rem 0 0.25rem 0.9rem;
  }
  .page-faq .faq-index .anchor-nav__title {
    display: block;
    margin: 0 0 0.6rem;
    font-size: 11px;
    letter-spacing: 0.14em;
    color: var(--fog);
  }
  .page-faq .faq-index .anchor-nav__link {
    white-space: normal;
    padding: 0.45rem 0.6rem;
  }
  .page-faq .faq-index .anchor-nav__link[aria-current="true"] {
    box-shadow: inset 2px 0 0 var(--cyan);
  }
  .page-faq .faq-group__head {
    grid-template-columns: 3rem minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition: none !important;
    animation: none !important;
  }
  .page-faq .faq-next__link:hover,
  .page-faq .faq-next__link:focus-visible {
    transform: none;
  }
}