.page-faq {
  --faq-gap: 22px;
  --faq-max: 1240px;
}

.page-faq .crumbs {
  padding-top: 22px;
  padding-bottom: 4px;
  font-size: 13px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 22px 0 30px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(820px 240px at 8% -30%, rgba(63, 224, 200, 0.11), transparent 72%),
    radial-gradient(600px 220px at 92% 120%, rgba(229, 139, 58, 0.08), transparent 70%);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 6.4vw, 54px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--paper);
  max-width: 20ch;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--moss);
}

.page-faq .faq-hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}

/* ---------- 主题索引 ---------- */
.page-faq .faq-topics {
  padding: 34px 0 8px;
}

.page-faq .faq-topics__head {
  max-width: 62ch;
  margin-bottom: 18px;
}

.page-faq .faq-topics__head h2 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(22px, 3.6vw, 30px);
  line-height: 1.15;
  color: var(--paper);
}

.page-faq .faq-topics__head p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--moss);
}

.page-faq .faq-band {
  margin: 0 0 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--panel);
}

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

.page-faq .faq-topics__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.page-faq .topic {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--panel);
  color: var(--paper);
  text-decoration: none;
  font-size: 13.5px;
  line-height: 1.3;
  transition: border-color 160ms var(--ease), transform 160ms var(--ease), background-color 160ms var(--ease);
}

.page-faq .topic:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

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

.page-faq .topic__ico {
  position: relative;
  flex: none;
  width: 24px;
  height: 24px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: linear-gradient(140deg, rgba(63, 224, 200, 0.2), rgba(63, 224, 200, 0) 62%);
}

.page-faq .topic__ico::after {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid var(--moss);
  border-radius: 1px;
}

.page-faq .topic:nth-child(3n) .topic__ico {
  background: linear-gradient(140deg, rgba(229, 139, 58, 0.22), rgba(229, 139, 58, 0) 62%);
}

.page-faq .topic:nth-child(3n) .topic__ico::after {
  border-color: var(--amber);
  inset: 5px 6px 9px;
}

.page-faq .topic:nth-child(4n) .topic__ico::after {
  border-color: var(--clay);
  inset: 9px 6px 5px;
}

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

/* ---------- 问题分组 ---------- */
.page-faq .faq-group {
  padding: 30px 0 6px;
}

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

.page-faq .faq-group__inner {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-group .section-head h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(21px, 3.4vw, 28px);
  line-height: 1.15;
  margin: 6px 0 8px;
  color: var(--paper);
}

.page-faq .faq-group .section-head p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--moss);
}

.page-faq .qa-list {
  display: grid;
  gap: 10px;
  min-width: 0;
}

.page-faq .qa {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--panel);
  transition: border-color 160ms var(--ease);
}

.page-faq .qa:hover {
  border-color: rgba(63, 224, 200, 0.55);
}

.page-faq .qa[open] {
  border-color: rgba(63, 224, 200, 0.75);
}

.page-faq .qa[open]::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  border-radius: var(--r-md) 0 0 var(--r-md);
  background: var(--cyan);
}

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16.5px;
  line-height: 1.4;
  color: var(--paper);
}

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

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

.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 17px;
  color: var(--moss);
  transition: color 160ms var(--ease);
}

.page-faq .qa[open] .qa__q::after {
  content: "–";
  color: var(--cyan);
}

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

.page-faq .qa__no {
  flex: none;
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: 0.04em;
}

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

.page-faq .qa__body {
  padding: 0 16px 16px;
  border-top: 1px solid var(--line);
  margin-top: -1px;
  padding-top: 14px;
}

.page-faq .qa__lead {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper);
}

.page-faq .qa__note {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--moss);
}

.page-faq .qa__note a,
.page-faq .steps a {
  color: var(--cyan);
  text-underline-offset: 3px;
}

.page-faq .qa__note a:hover,
.page-faq .steps a:hover {
  color: var(--amber);
}

.page-faq .steps {
  counter-reset: faqstep;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .steps li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 40px;
  font-size: 15px;
  line-height: 1.75;
  color: #D9D5CC;
}

.page-faq .steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  color: var(--amber);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 1px 5px;
  line-height: 1.3;
}

.page-faq .steps li strong {
  color: var(--paper);
  font-weight: 600;
}

/* ---------- 路径图 ---------- */
.page-faq .faq-path {
  margin: 16px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  background: rgba(11, 31, 26, 0.5);
}

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

.page-faq .faq-path figcaption {
  padding: 10px 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--moss);
  border-top: 1px solid var(--line);
}

/* ---------- 尾部入口 ---------- */
.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: calc(var(--faq-gap) - 6px);
  padding-bottom: 24px;
}

/* ---------- 媒体查询 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero {
    padding: 34px 0 40px;
  }

  .page-faq .faq-topics__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .qa__q {
    padding: 17px 20px;
    font-size: 17.5px;
  }

  .page-faq .qa__body {
    padding: 16px 20px 20px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 34px;
  }

  .page-faq .faq-hero__lede {
    grid-column: 1;
  }

  .page-faq .faq-hero__links {
    grid-column: 1 / -1;
  }

  .page-faq .faq-topics__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-group__inner {
    grid-template-columns: minmax(240px, 300px) minmax(0, 1fr);
    gap: 40px;
  }

  .page-faq .faq-group .section-head {
    position: sticky;
    top: 72px;
  }

  .page-faq .faq-group {
    padding: 42px 0 10px;
  }

  .page-faq .qa-list {
    max-width: 780px;
  }

  .page-faq .faq-actions {
    grid-column: 2;
  }

  .page-faq .faq-path {
    max-width: 420px;
  }
}

@media (min-width: 1180px) {
  .page-faq .qa__q {
    font-size: 18px;
  }

  .page-faq .steps li {
    font-size: 15.5px;
  }
}

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

  .page-faq .topic:hover {
    transform: none;
  }
}