.page-faq {
  --faq-aside: 15.5rem;
  --faq-sticky: 1.25rem;
  background: var(--ink-900);
  color: var(--white);
  font-family: var(--font-body);
  line-height: 1.75;
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(1.25rem, 4vw, 2.5rem) 0 clamp(2rem, 5vw, 3.5rem);
  overflow: hidden;
  background:
    radial-gradient(120% 85% at 88% -5%, rgba(47, 224, 200, 0.15), transparent 62%),
    radial-gradient(95% 75% at -5% 105%, rgba(255, 106, 26, 0.17), transparent 64%),
    var(--ink-900);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange) 0 20%, var(--cyan) 20% 42%, rgba(157, 176, 195, 0.18) 42% 100%);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  margin-top: 1.25rem;
}

.page-faq .faq-hero__kicker {
  display: inline-block;
  margin: 0;
  padding: 0.35rem 0.75rem;
  background: var(--orange);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  transform: skewX(-7deg);
}

.page-faq .faq-hero h1 {
  margin: 0.9rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.85rem, 6.2vw, 3.9rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  max-width: 22ch;
}

.page-faq .faq-hero__lede {
  margin: 1rem 0 0;
  max-width: 56ch;
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  color: var(--mist);
}

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

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

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

/* ---------- 搜索筛选带 ---------- */
.page-faq .faq-search {
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
  padding: clamp(1rem, 3vw, 1.6rem) clamp(1rem, 3vw, 1.75rem);
  background: var(--ink-800);
  border-left: 4px solid var(--cyan);
  display: grid;
  gap: 0.9rem;
}

.page-faq .faq-search__field {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding-bottom: 0.45rem;
  border-bottom: 2px solid var(--line);
  transition: border-color var(--dur) ease-out;
}

.page-faq .faq-search__field:focus-within {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-search__icon {
  color: var(--cyan);
  font-size: 1.05rem;
  line-height: 1;
}

.page-faq .faq-search__input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 0.3rem 0;
  background: transparent;
  border: 0;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 1rem;
}

.page-faq .faq-search__input::placeholder {
  color: var(--mist);
}

.page-faq .faq-search__input:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .faq-search__chips {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.page-faq .faq-search__chips-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-faq .faq-chip {
  display: inline-block;
  padding: 0.3rem 0.7rem;
  background: var(--ink-700);
  color: var(--white);
  font-size: 0.85rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background var(--dur) ease-out, color var(--dur) ease-out, border-color var(--dur) ease-out;
}

.page-faq .faq-chip:hover {
  background: transparent;
  border-color: var(--cyan);
  color: var(--cyan);
}

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

/* ---------- 主体网格 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  grid-template-columns: minmax(0, 1fr);
  padding: clamp(2rem, 5vw, 3.5rem) 0;
}

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

/* ---------- 左侧分类 ---------- */
.page-faq .faq-aside {
  min-width: 0;
}

.page-faq .faq-aside__title {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-faq .faq-aside__list {
  display: flex;
  gap: 0.5rem;
  margin: 0;
  padding: 0 0 0.5rem;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-aside__link {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  white-space: nowrap;
  padding: 0.5rem 0.8rem;
  background: var(--ink-800);
  color: var(--mist);
  font-size: 0.9rem;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color var(--dur) ease-out, background var(--dur) ease-out, border-color var(--dur) ease-out;
}

.page-faq .faq-aside__link:hover {
  color: var(--white);
  background: var(--ink-700);
}

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

.page-faq .faq-aside__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--cyan);
}

.page-faq .faq-aside__note {
  margin: 0.9rem 0 0;
  max-width: 30ch;
  font-size: 0.85rem;
  color: var(--mist);
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 5rem;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(2.25rem, 5vw, 3.5rem);
}

.page-faq .faq-group__title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.35rem, 3vw, 1.95rem);
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--white);
  scroll-margin-top: 5rem;
}

.page-faq .faq-group__title::before {
  content: attr(data-index);
  flex: none;
  padding: 0.2rem 0.5rem;
  background: var(--orange);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  transform: skewX(-6deg);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
  transition: border-color var(--dur) ease-out;
}

.page-faq .faq-item[open] {
  border-bottom-color: rgba(47, 224, 200, 0.45);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  padding: 1.05rem 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(0.98rem, 2vw, 1.12rem);
  letter-spacing: -0.01em;
  line-height: 1.45;
  color: var(--white);
  transition: color var(--dur) ease-out;
}

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

.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  line-height: 1;
  color: var(--cyan);
  transition: transform var(--dur) ease-out, color var(--dur) ease-out;
}

.page-faq .faq-item[open] summary::after {
  content: "+";
  transform: rotate(45deg);
  color: var(--yellow);
}

.page-faq .faq-item summary:hover {
  color: var(--yellow);
}

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

.page-faq .faq-item__body {
  padding: 0 0 1.35rem;
  max-width: 68ch;
  font-size: 1rem;
  color: var(--mist);
}

.page-faq .faq-item__body p {
  margin: 0 0 0.8rem;
}

.page-faq .faq-item__body p:last-child {
  margin-bottom: 0;
}

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

.page-faq .faq-item__body a:hover {
  color: var(--yellow);
}

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

.page-faq .mono {
  font-family: var(--font-mono);
  font-size: 0.94em;
  color: var(--white);
}

/* ---------- 步骤条 ---------- */
.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 0.9rem 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.page-faq .faq-steps li {
  position: relative;
  padding-left: 2.3rem;
  font-size: 0.95rem;
  color: var(--white);
}

.page-faq .faq-steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep);
  position: absolute;
  left: 0;
  top: 0.1rem;
  width: 1.6rem;
  height: 1.6rem;
  display: grid;
  place-items: center;
  background: var(--ink-700);
  border-left: 2px solid var(--cyan);
  color: var(--yellow);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 1.25rem 0 0;
  max-width: 20rem;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-faq .faq-figure figcaption {
  margin-top: 0.6rem;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 联系块 ---------- */
.page-faq .faq-contact {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  margin-top: 0.9rem;
  padding: 0.85rem 1rem;
  background: var(--ink-800);
  border-left: 3px solid var(--orange);
}

.page-faq .faq-contact__label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-faq .faq-contact__btn {
  padding: 0.3rem 0.7rem;
  background: transparent;
  border: 1px solid var(--cyan);
  color: var(--cyan);
  font-family: var(--font-body);
  font-size: 0.82rem;
  cursor: pointer;
  transition: background var(--dur) ease-out, color var(--dur) ease-out;
}

.page-faq .faq-contact__btn:hover {
  background: var(--cyan);
  color: var(--ink-900);
}

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

.page-faq .faq-contact__addr {
  margin: 0.75rem 0 0;
  font-size: 0.85rem;
  color: var(--mist);
}

/* ---------- 底部入口 ---------- */
.page-faq .faq-cta {
  display: grid;
  gap: 0.85rem;
  margin: 0 0 clamp(2.5rem, 6vw, 4rem);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  background: linear-gradient(120deg, var(--ink-800) 0%, var(--ink-700) 100%);
  border-left: 6px solid var(--orange);
}

.page-faq .faq-cta__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-cta__text {
  margin: 0;
  max-width: 60ch;
  font-size: 0.98rem;
  color: var(--mist);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 0.35rem;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
    gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-faq .faq-body {
    grid-template-columns: var(--faq-aside) minmax(0, 1fr);
    align-items: start;
    gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-faq .faq-aside {
    position: sticky;
    top: var(--faq-sticky);
  }

  .page-faq .faq-aside__list {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
    gap: 0.35rem;
  }

  .page-faq .faq-aside__link {
    border-left: 2px solid var(--line);
  }

  .page-faq .faq-aside__link:hover {
    border-left-color: var(--orange);
  }

  .page-faq .faq-item summary {
    padding: 1.15rem 0;
  }
}

@media (min-width: 1280px) {
  .page-faq {
    --faq-aside: 17rem;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item summary::after,
  .page-faq .faq-item,
  .page-faq .faq-chip,
  .page-faq .faq-aside__link,
  .page-faq .faq-contact__btn,
  .page-faq .faq-search__field {
    transition: none;
  }
}