.page-faq {
  --faq-side: 320px;
}

.page-faq .breadcrumbs {
  padding-top: clamp(18px, 3vw, 30px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4.5vw, 58px) 0 clamp(24px, 3.5vw, 42px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
  background-size: 96px 96px;
  opacity: 0.55;
  -webkit-mask-image: radial-gradient(125% 105% at 18% 0%, #000 0%, transparent 70%);
  mask-image: radial-gradient(125% 105% at 18% 0%, #000 0%, transparent 70%);
  pointer-events: none;
}

.page-faq .faq-hero-inner {
  position: relative;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 5.2vw, 56px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-faq .faq-lede {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-faq .faq-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-quick a {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--ink-800);
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease), background-color 0.16s var(--ease);
}

.page-faq .faq-quick a::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: none;
  border-radius: 50%;
  background: var(--cyan);
  opacity: 0.85;
}

.page-faq .faq-quick a:hover,
.page-faq .faq-quick a:focus-visible {
  color: var(--text);
  border-color: var(--cyan);
  background: rgba(47, 227, 208, 0.08);
}

/* ---------- 两栏主体 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  padding: clamp(26px, 4vw, 46px) 0 clamp(38px, 6vw, 70px);
}

/* ---------- 左栏分类 ---------- */
.page-faq .faq-side-inner {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-side-figure {
  margin: 0;
  border-bottom: 1px solid var(--line);
  background: var(--ink-700);
}

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

.page-faq .faq-side-title {
  margin: 0;
  padding: 16px 16px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--text-mute);
}

.page-faq .faq-cat-list {
  margin: 0;
  padding: 0 0 12px;
  list-style: none;
}

.page-faq .faq-cat-list li + li {
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-cat-list a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 12px 16px;
  border-left: 2px solid transparent;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease), background-color 0.16s var(--ease);
}

.page-faq .faq-cat-list a:hover,
.page-faq .faq-cat-list a:focus-visible {
  color: var(--text);
  border-left-color: var(--cyan);
  background: rgba(47, 227, 208, 0.06);
}

.page-faq .cat-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
}

.page-faq .cat-label {
  font-size: 15px;
  line-height: 1.5;
}

.page-faq .cat-count {
  padding: 1px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-mute);
}

/* ---------- 问答流 ---------- */
.page-faq .faq-group {
  padding: clamp(26px, 4vw, 40px) 0 14px;
  border-top: 1px solid var(--line);
  scroll-margin-top: 96px;
}

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

.page-faq .faq-group-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 0 0 10px;
}

.page-faq .faq-group-index {
  flex: none;
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1;
  color: var(--gold);
}

.page-faq .faq-group-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 2.6vw, 27px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-group-lede {
  margin: 0 0 20px;
  max-width: 70ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-faq .faq-item {
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: 96px;
}

.page-faq .faq-item:last-of-type {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 0;
  list-style: none;
  cursor: pointer;
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
  transition: color 0.16s var(--ease);
}

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

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item > summary::before {
  content: "+";
  flex: none;
  width: 20px;
  margin-top: 1px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.2;
  color: var(--cyan);
  transition: transform 0.18s var(--ease);
}

.page-faq .faq-item[open] > summary::before {
  transform: rotate(45deg);
}

.page-faq .faq-item > summary:hover,
.page-faq .faq-item > summary:focus-visible {
  color: var(--cyan);
}

.page-faq .faq-answer {
  margin: 0;
  padding: 0 0 20px 32px;
  max-width: 72ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-faq .faq-group-tail {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-mute);
}

.page-faq .faq-group-tail a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 208, 0.35);
}

.page-faq .faq-group-tail a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 6px 0 26px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
}

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

.page-faq .faq-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-mute);
}

/* ---------- 人工协助 ---------- */
.page-faq .faq-support {
  padding: 0 0 clamp(36px, 6vw, 64px);
}

.page-faq .faq-support-inner {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 40px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 150% at 8% 0%, rgba(47, 227, 208, 0.14), transparent 62%),
    linear-gradient(180deg, var(--teal-deep), var(--ink-800));
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-support-inner h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .support-lede {
  margin: 14px 0 0;
  max-width: 54ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-faq .support-tips {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-faq .support-tips li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-mute);
}

.page-faq .support-tips li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--gold);
}

.page-faq .support-grid {
  display: grid;
  gap: 26px;
}

.page-faq .support-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-faq .support-list li {
  display: grid;
  gap: 3px;
  padding-left: 14px;
  border-left: 2px solid var(--cyan);
}

.page-faq .support-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--text-mute);
}

.page-faq .support-val {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-faq .support-note {
  margin: 26px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-mute);
}

/* ---------- 相关入口 ---------- */
.page-faq .faq-more {
  padding: 0 0 clamp(48px, 7vw, 88px);
}

.page-faq .faq-more-title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.4;
  color: var(--text);
}

.page-faq .faq-more-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .faq-more-list a {
  display: grid;
  gap: 6px;
  height: 100%;
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
  text-decoration: none;
  transition: border-color 0.16s var(--ease), transform 0.16s var(--ease), background-color 0.16s var(--ease);
}

.page-faq .faq-more-list a:hover,
.page-faq .faq-more-list a:focus-visible {
  border-color: var(--cyan);
  background: var(--ink-700);
  transform: translateY(-2px);
}

.page-faq .more-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
}

.page-faq .more-desc {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--text-mute);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-more-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 820px) {
  .page-faq .support-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 44px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-side) minmax(0, 1fr);
    gap: 52px;
  }

  .page-faq .faq-side {
    position: sticky;
    top: 92px;
  }

  .page-faq .faq-answer {
    padding-left: 32px;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-more-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .page-faq .faq-answer {
    padding-left: 0;
  }

  .page-faq .faq-item > summary {
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-more-list a:hover,
  .page-faq .faq-more-list a:focus-visible {
    transform: none;
  }

  .page-faq .faq-item > summary::before {
    transition: none;
  }
}
<<<END>>>