.page-faq {
  --faq-aside: 280px;
  background: var(--ink-900);
  color: var(--paper);
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2rem, 5vw, 3.6rem) 0 clamp(1.8rem, 4vw, 3rem);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(to right, var(--line) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(to bottom, var(--line) 0 1px, transparent 1px 64px);
  opacity: 0.32;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -34%;
  right: -18%;
  width: 78vw;
  height: 78vw;
  max-width: 640px;
  max-height: 640px;
  background: radial-gradient(circle at 50% 50%, rgba(0, 224, 138, 0.16), rgba(0, 224, 138, 0) 64%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
}

.page-faq .faq-title {
  margin: 0.5rem 0 0.9rem;
  color: var(--paper);
}

.page-faq .faq-hero .lede {
  max-width: 36em;
  color: var(--silver);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem 1.4rem;
  margin: 1.5rem 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--graphite);
}

.page-faq .faq-slant {
  display: inline-block;
  transform: rotate(-15deg);
  padding: 0.25rem 0.6rem;
  color: var(--amber);
  border: 1px solid rgba(255, 165, 48, 0.45);
  border-radius: var(--radius);
  letter-spacing: 0.08em;
}

.page-faq .faq-hero__figure {
  margin: 0;
  aspect-ratio: 10 / 7;
}

.page-faq .faq-hero__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 分组页签 ---------- */
.page-faq .faq-body {
  padding: clamp(1.4rem, 3vw, 2.2rem) 0 clamp(2.4rem, 5vw, 4rem);
}

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

.page-faq .faq-tablist {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-tablist::-webkit-scrollbar {
  display: none;
}

.page-faq .tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.7rem 0.95rem;
  border: 1px solid var(--line);
  border-bottom: none;
  border-radius: var(--radius) var(--radius) 0 0;
  background: transparent;
  color: var(--graphite);
  font: inherit;
  font-size: 14px;
  letter-spacing: 0.02em;
  white-space: nowrap;
  cursor: pointer;
  transition: color 180ms ease, background-color 180ms ease;
}

.page-faq .tab:hover {
  color: var(--silver);
}

.page-faq .tab .tab-index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--green-text);
}

.page-faq .tab[aria-selected="true"] {
  background: var(--ink-800);
  color: var(--paper);
  box-shadow: inset 0 2px 0 0 var(--green);
}

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

/* ---------- 分组面板 ---------- */
.page-faq .faq-group {
  padding-top: clamp(1rem, 2.4vw, 1.8rem);
}

.page-faq .tab-panel + .tab-panel {
  border-top: 1px solid var(--line);
  margin-top: 2rem;
}

.page-faq .faq-group__head {
  position: sticky;
  top: var(--top-h);
  z-index: 3;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem 0.8rem;
  padding: 0.85rem 0;
  background: var(--ink-900);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__coord {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--green-text);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(1.2rem, 2.6vw, 1.65rem);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-group__desc {
  flex: 1 0 100%;
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--graphite);
}

.page-faq .faq-group__body {
  padding-top: 0.3rem;
}

.page-faq .faq-group__body--aside {
  display: grid;
  gap: clamp(1.4rem, 3vw, 2.2rem);
}

.page-faq .faq-figure {
  margin: 1rem 0 0;
  aspect-ratio: 10 / 7;
}

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

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-item {
  border-top: 1px solid var(--line);
}

.page-faq .faq-item:first-of-type {
  border-top: none;
}

.page-faq .faq-item summary {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) 22px;
  align-items: start;
  gap: 10px;
  padding: 1.05rem 0;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
}

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

.page-faq .faq-item summary:hover .faq-q {
  color: var(--green-text);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
}

.page-faq .faq-num {
  padding-top: 0.28rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--graphite);
  transition: color 180ms ease;
}

.page-faq .faq-item[open] .faq-num {
  color: var(--green);
}

.page-faq .faq-q {
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.65;
  transition: color 180ms ease;
}

.page-faq .faq-sign {
  position: relative;
  justify-self: end;
  width: 20px;
  height: 20px;
  margin-top: 0.22rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-faq .faq-sign::before,
.page-faq .faq-sign::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--green);
  transform: translate(-50%, -50%);
  transition: transform 200ms ease, opacity 200ms ease;
}

.page-faq .faq-sign::before {
  width: 10px;
  height: 1.5px;
}

.page-faq .faq-sign::after {
  width: 1.5px;
  height: 10px;
}

.page-faq .faq-item[open] .faq-sign::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.page-faq .faq-a {
  margin: 0 0 1.1rem;
  padding-left: 14px;
  border-left: 2px solid var(--green);
}

.page-faq .faq-a p {
  margin: 0 0 0.55rem;
  max-width: 54em;
  font-size: 0.97rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-faq .faq-copy {
  display: inline-flex;
  align-items: center;
  margin-top: 0.15rem;
  padding: 0.35rem 0.7rem;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: none;
  color: var(--green-text);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: color 180ms ease, border-color 180ms ease;
}

.page-faq .faq-copy:hover {
  border-color: var(--green);
  color: var(--green);
}

.page-faq .faq-copy.is-copied {
  border-color: var(--amber);
  color: var(--amber);
}

/* ---------- 收尾区 ---------- */
.page-faq .faq-more {
  padding: clamp(2.4rem, 5vw, 4rem) 0 clamp(2.6rem, 5vw, 4.4rem);
  border-top: 1px solid var(--line);
}

.page-faq .faq-more__grid {
  display: grid;
  gap: clamp(1.8rem, 4vw, 3rem);
}

.page-faq .faq-more .lede {
  max-width: 34em;
  color: var(--silver);
}

.page-faq .faq-contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.4rem;
}

.page-faq .faq-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-900);
  color: var(--silver);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: color 180ms ease, border-color 180ms ease;
}

.page-faq .faq-chip:hover {
  border-color: var(--green);
  color: var(--green);
}

.page-faq .faq-chip.is-copied {
  border-color: var(--amber);
  color: var(--amber);
}

.page-faq .faq-more__hours {
  margin: 0.9rem 0 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--graphite);
}

.page-faq .faq-links {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq .faq-links a {
  display: flex;
  gap: 1rem;
  align-items: baseline;
  padding: 0.95rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--paper);
  font-size: 1rem;
  text-decoration: none;
  transition: color 180ms ease;
}

.page-faq .faq-links a:hover {
  color: var(--green);
}

.page-faq .faq-links .link-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--green-text);
}

.page-faq .faq-links .link-note {
  display: block;
  margin-top: 0.25rem;
  font-size: 13px;
  line-height: 1.7;
  color: var(--graphite);
}

.page-faq .faq-closing {
  margin-top: 1.6rem;
}

.page-faq .faq-closing p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.8;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-a {
    margin-left: 50px;
    padding-left: 18px;
  }

  .page-faq .faq-item summary {
    grid-template-columns: 50px minmax(0, 1fr) 22px;
    gap: 14px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
  }

  .page-faq .faq-group__body--aside {
    grid-template-columns: minmax(0, var(--faq-aside)) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-more__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  }

  .page-faq .faq-group__desc {
    flex: 0 1 auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .tab,
  .page-faq .faq-num,
  .page-faq .faq-q,
  .page-faq .faq-sign::before,
  .page-faq .faq-sign::after,
  .page-faq .faq-copy,
  .page-faq .faq-chip,
  .page-faq .faq-links a {
    transition: none;
  }
}