.page-faq {
  --faq-aside-w: 14rem;
  --faq-sub: #4A5560;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--ink);
  color: var(--white);
  padding-block: clamp(1.75rem, 5vw, 3rem) clamp(2.25rem, 6vw, 3.5rem);
}

.page-faq .faq-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: center 40%;
  opacity: 0.22;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
}

.page-faq .faq-hero .breadcrumbs {
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

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

.page-faq .faq-hero .display {
  margin: 0.55rem 0 0.9rem;
  max-width: 16em;
}

.page-faq .faq-hero .lede {
  max-width: 42em;
  margin: 0;
}

/* ---------- 问题索引墙 ---------- */
.page-faq .faq-index {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
}

.page-faq .faq-index__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: 0.8rem;
  row-gap: 0.4rem;
  align-content: start;
  padding: 1.1rem 1.1rem 1.3rem;
  border: 1px solid rgba(201, 211, 218, 0.24);
  border-top: 3px solid var(--amber);
  background: rgba(22, 28, 34, 0.78);
  color: var(--white);
  text-decoration: none;
  transition: border-color var(--dur-2) var(--ease),
    background-color var(--dur-2) var(--ease),
    transform var(--dur-2) var(--ease);
}

.page-faq .faq-index__item .index-num {
  grid-column: 1;
  grid-row: 1;
  line-height: 1.6;
}

.page-faq .faq-index__name {
  grid-column: 2;
  grid-row: 1;
  font-family: var(--font-display);
  font-size: var(--fs-21);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.4;
}

.page-faq .faq-index__desc {
  grid-column: 1 / -1;
  grid-row: 2;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--silver-soft);
}

.page-faq .faq-index__item:hover,
.page-faq .faq-index__item:focus-visible {
  border-color: var(--blue);
  background: rgba(8, 64, 95, 0.6);
  transform: translateY(-2px);
}

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

@media (min-width: 720px) {
  .page-faq .faq-index {
    grid-template-columns: 1.32fr 1fr 0.84fr;
    gap: 0.875rem;
  }
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  padding-block: clamp(2.5rem, 6vw, 4.25rem);
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.35rem 1rem;
  align-items: baseline;
  padding-bottom: 1rem;
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
  border-bottom: 1px solid var(--rule);
}

.page-faq .faq-group__head .h-2 {
  margin: 0;
}

.page-faq .faq-group__sub {
  margin: 0.4rem 0 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--faq-sub);
}

/* ---------- 列表 + 侧栏 ---------- */
.page-faq .faq-cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.75rem;
}

.page-faq .faq-aside {
  align-self: start;
  padding: 1.05rem 1.15rem 1.2rem;
  background: var(--panel);
  border-left: 3px solid var(--blue);
  box-shadow: var(--shadow-1);
}

.page-faq .section--panel .faq-aside {
  background: var(--white);
}

.page-faq .faq-aside__label {
  display: block;
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue-deep);
}

.page-faq .faq-aside p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--faq-sub);
}

.page-faq .faq-aside a {
  color: var(--blue-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-aside a:hover {
  color: var(--blue);
}

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

@media (min-width: 980px) {
  .page-faq .faq-cols {
    grid-template-columns: minmax(0, 1fr) var(--faq-aside-w);
    gap: clamp(2rem, 5vw, 4rem);
  }
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--rule);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 1.05rem 0.25rem 1.05rem 0;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-17);
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
  transition: color var(--dur-1) var(--ease);
}

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

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

.page-faq .qa__q:hover {
  color: var(--blue);
}

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

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

.page-faq .qa__mark {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-top: 0.42rem;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  background: var(--amber);
  transition: transform var(--dur-2) var(--ease), opacity var(--dur-2) var(--ease);
}

.page-faq .qa__mark::before {
  width: 14px;
  height: 2px;
}

.page-faq .qa__mark::after {
  width: 2px;
  height: 14px;
}

.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa__a {
  padding: 0 0 1.3rem 1.9rem;
}

.page-faq .qa[open] .qa__a {
  animation: page-faq-fade var(--dur-2) var(--ease) both;
}

.page-faq .qa__a p {
  margin: 0;
  max-width: 40em;
  font-size: var(--fs-17);
  line-height: 1.85;
  color: #37414A;
}

@keyframes page-faq-fade {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* ---------- 使用分组：图文并排 ---------- */
.page-faq .faq-cols--media {
  align-items: start;
}

.page-faq .faq-media {
  margin: 0;
}

.page-faq .faq-media .media-frame {
  width: 100%;
  border: 1px solid var(--rule);
}

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

.page-faq .faq-tip {
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
  padding-left: 0.95rem;
  border-left: 2px solid var(--amber);
  max-width: 46em;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--faq-sub);
}

.page-faq .faq-tip a {
  color: var(--blue-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-tip a:hover {
  color: var(--blue);
}

@media (min-width: 900px) {
  .page-faq .faq-cols--media {
    grid-template-columns: 22rem minmax(0, 1fr);
    gap: clamp(1.75rem, 4vw, 3.25rem);
  }
}

/* ---------- 收束区 ---------- */
.page-faq .faq-cta {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--white);
  padding-block: clamp(2.5rem, 6vw, 4rem);
}

.page-faq .faq-cta::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue) 0%, var(--amber) 62%, var(--orange) 100%);
}

.page-faq .faq-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-faq .faq-cta__title {
  margin: 0.6rem 0 0.85rem;
  color: var(--white);
}

.page-faq .faq-cta__lead p {
  margin: 0;
  max-width: 38em;
  font-size: var(--fs-17);
  line-height: 1.8;
  color: var(--silver-soft);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.page-faq .faq-cta__contact {
  padding: 1.15rem 1.2rem 1.3rem;
  background: var(--ink-2);
  border-left: 3px solid var(--blue);
}

.page-faq .faq-cta__label {
  display: block;
  margin-bottom: 0.75rem;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq .faq-cta__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-cta__list li {
  display: grid;
  gap: 0.2rem;
  padding: 0.6rem 0;
  border-top: 1px solid rgba(201, 211, 218, 0.16);
}

.page-faq .faq-cta__list li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-cta__key {
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--silver);
}

.page-faq .faq-cta__val {
  font-size: var(--fs-14);
  line-height: 1.6;
  color: var(--white);
  word-break: break-word;
}

@media (min-width: 900px) {
  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 4rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__item,
  .page-faq .qa__q,
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after {
    transition: none;
  }

  .page-faq .faq-index__item:hover,
  .page-faq .faq-index__item:focus-visible {
    transform: none;
  }

  .page-faq .qa[open] .qa__a {
    animation: none;
  }
}