/* ============================================================
   页面作用域：问题解答 /questions/
   ============================================================ */
.page-faq {
  --faq-side-w: 296px;
  --faq-gap: clamp(28px, 4vw, 52px);
  display: block;
  min-width: 0;
  background: var(--ink);
  color: var(--cream);
  padding-bottom: clamp(64px, 9vw, 112px);
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 8% -10%, rgba(39, 72, 224, .34), transparent 58%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: min(46%, 520px);
  height: 3px;
  background: linear-gradient(90deg, var(--red), rgba(228, 54, 47, 0));
  pointer-events: none;
}

.page-faq .faq-hero-media {
  position: absolute;
  top: 0;
  right: 0;
  width: 46%;
  height: 100%;
  opacity: .3;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 46%);
  mask-image: linear-gradient(90deg, transparent 0%, #000 46%);
}

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

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
  padding-top: clamp(38px, 6vw, 72px);
  padding-bottom: clamp(40px, 6.5vw, 80px);
}

.page-faq .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .04em;
}

.page-faq .breadcrumb-item a {
  color: var(--muted);
  text-decoration: none;
  transition: color .16s var(--ease);
}

.page-faq .breadcrumb-item a:hover {
  color: var(--cyan);
}

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

.page-faq .breadcrumb-sep {
  color: var(--line);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 4.6vw, 52px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -.02em;
  color: var(--cream);
}

.page-faq .faq-hero .lead {
  margin: 20px 0 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.85;
}

/* ---------- 筛选条 ---------- */
.page-faq .faq-toolbar {
  border-bottom: 1px solid var(--line);
  background: var(--ink-2);
}

.page-faq .faq-toolbar .container {
  padding-top: 16px;
  padding-bottom: 16px;
}

.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-filter .filter-btn {
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: transparent;
  color: var(--muted);
  font-family: var(--font-data);
  font-size: 12.5px;
  letter-spacing: .03em;
  cursor: pointer;
  transition: color .16s var(--ease), border-color .16s var(--ease), background-color .16s var(--ease);
}

.page-faq .faq-filter .filter-btn:hover {
  color: var(--cream);
  border-color: rgba(79, 227, 216, .45);
}

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

.page-faq .faq-filter .filter-btn.is-active {
  color: #fff;
  background: var(--blue);
  border-color: var(--blue);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  padding-top: clamp(30px, 4.5vw, 54px);
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-side {
  min-width: 0;
}

.page-faq .faq-side-media {
  margin: 0 0 20px;
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
}

.page-faq .faq-side-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: .8;
}

.page-faq .faq-side-title {
  margin: 0 0 12px;
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}

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

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

.page-faq .faq-index a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 13px 2px;
  color: var(--cream);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.5;
  transition: color .18s var(--ease), padding-left .18s var(--ease);
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  color: var(--cyan);
  padding-left: 8px;
}

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

.page-faq .idx-num {
  color: var(--red);
  font-size: 12px;
  letter-spacing: .08em;
}

.page-faq .faq-side-note {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

/* ---------- 问答主区 ---------- */
.page-faq .faq-main {
  min-width: 0;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(38px, 5vw, 64px);
}

.page-faq .faq-group-head {
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group-head .section-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: clamp(21px, 2.6vw, 28px);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--cream);
}

.page-faq .cat-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: none;
}

.page-faq .cat-dot--red { background: var(--red); }
.page-faq .cat-dot--moss { background: var(--moss); }
.page-faq .cat-dot--clay { background: var(--clay); }
.page-faq .cat-dot--blue { background: var(--blue); }
.page-faq .cat-dot--cyan { background: var(--cyan); }

/* ---------- 单条问答 ---------- */
.page-faq .faq-item {
  margin-bottom: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
  overflow: hidden;
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease), transform .18s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(79, 227, 216, .3);
}

.page-faq .faq-item[open] {
  border-color: rgba(39, 72, 224, .8);
  background: linear-gradient(180deg, rgba(39, 72, 224, .09), rgba(23, 29, 38, 0) 46%), var(--ink-2);
}

.page-faq .faq-item:target {
  border-color: var(--red);
  box-shadow: 0 0 0 1px rgba(228, 54, 47, .38);
}

.page-faq .faq-item[hidden] {
  display: none;
}

.page-faq .faq-item.is-enter {
  animation: faq-in .18s var(--ease) both;
}

@keyframes faq-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.page-faq .faq-sum {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .faq-sum::after {
  content: "";
  grid-column: 3;
  width: 9px;
  height: 9px;
  margin-top: 7px;
  border-right: 1px solid var(--muted);
  border-bottom: 1px solid var(--muted);
  transform: rotate(45deg);
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-item[open] .faq-sum::after {
  transform: rotate(-135deg);
  border-color: var(--cyan);
}

.page-faq .faq-num {
  padding-top: 3px;
  color: var(--red);
  font-size: 12px;
  letter-spacing: .08em;
}

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

.page-faq .faq-q {
  color: var(--cream);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.62;
  letter-spacing: -.005em;
}

.page-faq .faq-ans {
  padding: 2px 18px 18px;
  border-top: 1px solid var(--line);
  margin-top: 2px;
  padding-top: 14px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .faq-item[open] .faq-ans {
  animation: faq-ans-in .26s var(--ease) both;
}

@keyframes faq-ans-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

.page-faq .faq-ans p {
  margin: 0 0 .8em;
}

.page-faq .faq-ans p:last-of-type {
  margin-bottom: 0;
}

.page-faq .faq-ans-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}

/* ---------- 复制按钮 ---------- */
.page-faq .copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: transparent;
  color: var(--muted);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .04em;
  cursor: pointer;
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

.page-faq .copy-btn:hover {
  color: var(--cyan);
  border-color: rgba(79, 227, 216, .5);
}

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

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

/* ---------- 底部联系 ---------- */
.page-faq .faq-contact {
  margin-top: clamp(52px, 7vw, 92px);
  padding-top: clamp(34px, 5vw, 60px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-contact .section-note {
  max-width: 62ch;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .faq-contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 26px;
}

.page-faq .faq-contact-card {
  padding: 20px 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
  transition: border-color .18s var(--ease);
}

.page-faq .faq-contact-card:hover {
  border-color: rgba(39, 72, 224, .8);
}

.page-faq .faq-contact-key {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .14em;
}

.page-faq .faq-contact-val {
  margin: 10px 0 14px;
  color: var(--cream);
  font-family: var(--font-data);
  font-size: 15px;
  line-height: 1.5;
  word-break: break-all;
}

.page-faq .faq-contact-addr {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.page-faq .faq-contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 760px) {
  .page-faq .faq-hero-media {
    display: none;
  }
  .page-faq .faq-hero-inner {
    max-width: none;
  }
  .page-faq .faq-side-media {
    aspect-ratio: 16 / 9;
  }
  .page-faq .faq-sum {
    gap: 12px;
    padding: 14px 15px;
  }
  .page-faq .faq-ans {
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-faq .faq-q {
    font-size: 15px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-side-w) minmax(0, 1fr);
    align-items: start;
  }
  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--strip-h) + 24px);
  }
  .page-faq .faq-contact-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 18px;
  }
}

@media (min-width: 1200px) {
  .page-faq {
    --faq-side-w: 316px;
  }
  .page-faq .faq-sum {
    padding: 18px 22px;
  }
  .page-faq .faq-ans {
    padding-left: 22px;
    padding-right: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-sum::after,
  .page-faq .copy-btn,
  .page-faq .faq-index a {
    transition: none;
  }
  .page-faq .faq-item[open] .faq-ans,
  .page-faq .faq-item.is-enter {
    animation: none;
  }
}
<<<END>>>