.page-faq {
  --faq-rail-w: 238px;
  --faq-col-gap: clamp(26px, 4.2vw, 68px);
  --faq-panel: rgba(8, 23, 36, 0.62);
  padding-block: clamp(22px, 4vw, 52px) clamp(52px, 7vw, 104px);
  background:
    radial-gradient(120% 60% at 78% -8%, rgba(47, 125, 91, 0.16) 0%, rgba(47, 125, 91, 0) 62%),
    linear-gradient(180deg, rgba(18, 46, 69, 0.5) 0%, rgba(11, 30, 45, 0) 420px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-intro {
  margin-top: clamp(16px, 2.2vw, 28px);
  padding-bottom: clamp(22px, 3vw, 38px);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-intro h1 {
  margin: 14px 0 0;
  max-width: 20ch;
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4.8vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-faq .faq-intro__lede {
  margin: 18px 0 0;
  max-width: 64ch;
  font-family: var(--font-body);
  font-size: clamp(0.9375rem, 1.1vw, 1.0625rem);
  line-height: 1.82;
  color: var(--ink-dim);
}

.page-faq .faq-intro__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 30px;
  margin: 24px 0 0;
  padding: 14px 0 0;
  list-style: none;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-intro__meta li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--ink-mute);
}

.page-faq .faq-intro__k {
  letter-spacing: 0.09em;
  color: var(--mist-blue);
}

.page-faq .faq-intro__meta .mono {
  color: var(--gold);
  font-weight: 700;
  font-size: 0.8125rem;
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 36px);
  margin-top: clamp(26px, 3.6vw, 46px);
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: var(--faq-col-gap);
    align-items: start;
  }
}

/* ---------- 左侧主题目录 ---------- */
.page-faq .faq-rail {
  padding: 16px 14px 18px;
  border: 1px solid var(--line-soft);
  background: var(--bg-raised);
}

@media (min-width: 960px) {
  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 26px);
    padding: 18px 16px 20px;
    max-height: calc(100vh - var(--header-h) - 52px);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--board-teal) transparent;
  }
}

.page-faq .faq-rail__nav {
  margin-top: 12px;
}

.page-faq .faq-rail__nav ol {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--board-teal) transparent;
}

.page-faq .faq-rail__nav li {
  flex: 0 0 auto;
}

.page-faq .faq-rail__nav a {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 11px;
  border: 1px solid var(--line-soft);
  border-bottom: 2px solid transparent;
  color: var(--ink-dim);
  font-size: 0.875rem;
  line-height: 1.45;
  text-decoration: none;
  white-space: nowrap;
  transition:
    color var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.page-faq .faq-rail__nav a .mono {
  font-size: 0.6875rem;
  color: var(--ink-mute);
  letter-spacing: 0.06em;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-rail__nav a:hover,
.page-faq .faq-rail__nav a:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--accent-soft);
  background: rgba(47, 125, 91, 0.14);
}

.page-faq .faq-rail__nav a:hover .mono,
.page-faq .faq-rail__nav a:focus-visible .mono {
  color: var(--accent-soft);
}

@media (min-width: 960px) {
  .page-faq .faq-rail__nav ol {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
    border-top: 1px solid var(--line-soft);
  }

  .page-faq .faq-rail__nav li {
    flex: 1 1 auto;
  }

  .page-faq .faq-rail__nav a {
    border: 0;
    border-left: 2px solid transparent;
    border-bottom: 1px solid var(--line-soft);
    padding: 10px 10px 10px 12px;
    white-space: normal;
  }

  .page-faq .faq-rail__nav a:hover,
  .page-faq .faq-rail__nav a:focus-visible {
    border-left-color: var(--accent-soft);
    border-bottom-color: var(--line-soft);
  }
}

.page-faq .faq-rail__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line-soft);
  font-size: 0.8125rem;
  line-height: 1.72;
  color: var(--ink-mute);
}

/* ---------- 右侧主题区 ---------- */
.page-faq .faq-topic {
  padding-block: clamp(24px, 3.2vw, 40px);
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-topic__head {
  display: flex;
  align-items: baseline;
  gap: 13px;
}

.page-faq .faq-topic__no {
  flex: 0 0 auto;
  margin: 0;
  padding: 3px 7px;
  border: 1px solid var(--line-accent);
  color: var(--accent-soft);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  line-height: 1;
}

.page-faq .faq-topic__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.3125rem, 2.5vw, 1.8125rem);
  line-height: 1.28;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-faq .faq-topic__lede {
  margin: 13px 0 0;
  max-width: 68ch;
  font-size: clamp(0.9375rem, 1.05vw, 1rem);
  line-height: 1.8;
  color: var(--ink-dim);
}

.page-faq .faq-topic__sub {
  margin: 24px 0 0;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  color: var(--ink-mute);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 22px 0 0;
  border-color: var(--line-soft);
}

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

/* ---------- 折叠问题列表 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .faq-item {
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--board-teal);
  background: var(--bg-raised);
  transition:
    border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

.page-faq .faq-item:hover {
  border-left-color: var(--accent-soft);
}

.page-faq .faq-item[open] {
  border-color: var(--line-accent);
  border-left-color: var(--accent);
  background: linear-gradient(180deg, rgba(47, 125, 91, 0.1) 0%, rgba(18, 46, 69, 0.9) 100%);
  box-shadow: var(--shadow-card);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 16px;
  list-style: none;
  cursor: pointer;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--ink);
  transition: color var(--dur) var(--ease);
}

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

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

.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 1.0625rem;
  line-height: 1;
  color: var(--accent-soft);
}

.page-faq .faq-item[open] summary::after {
  content: "–";
  color: var(--gold);
}

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

@media (min-width: 720px) {
  .page-faq .faq-item summary {
    padding: 15px 20px;
    font-size: 1rem;
  }
}

.page-faq .faq-item__a {
  padding: 14px 16px 18px;
  border-top: 1px dashed var(--line-soft);
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--ink-dim);
}

@media (min-width: 720px) {
  .page-faq .faq-item__a {
    padding: 16px 20px 20px;
  }
}

.page-faq .faq-item__a a {
  color: var(--accent-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line-accent);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

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

/* ---------- 编号步骤 ---------- */
.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faq-step;
}

.page-faq .faq-steps li {
  position: relative;
  counter-increment: faq-step;
  padding-left: 36px;
  padding-block: 5px;
}

.page-faq .faq-steps li + li {
  margin-top: 4px;
}

.page-faq .faq-steps li::before {
  content: counter(faq-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 8px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--gold);
}

/* ---------- 结算自查清单 ---------- */
.page-faq .faq-checklist {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-checklist__item {
  position: relative;
}

.page-faq .faq-checklist__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  margin: 0;
}

.page-faq .faq-checklist__label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 11px 14px;
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--board-teal);
  background: var(--faq-panel);
  cursor: pointer;
  font-size: 0.9375rem;
  line-height: 1.72;
  color: var(--ink-dim);
  transition:
    border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

.page-faq .faq-checklist__label:hover {
  border-left-color: var(--accent-soft);
  color: var(--ink);
}

.page-faq .faq-checklist__box {
  flex: 0 0 auto;
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 4px;
  border: 1px solid var(--line-accent);
  background: rgba(11, 30, 45, 0.9);
}

.page-faq .faq-checklist__input:checked + .faq-checklist__label {
  border-color: var(--accent);
  border-left-color: var(--accent);
  background: rgba(47, 125, 91, 0.18);
  color: var(--ink);
}

.page-faq .faq-checklist__input:checked + .faq-checklist__label .faq-checklist__box::after {
  content: "";
  position: absolute;
  inset: 3px;
  background: var(--accent-soft);
}

.page-faq .faq-checklist__input:focus-visible + .faq-checklist__label {
  outline: 2px solid var(--accent-soft);
  outline-offset: 2px;
}

/* ---------- 尾部引导 ---------- */
.page-faq .faq-outro {
  margin-top: clamp(30px, 4vw, 52px);
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid var(--line-soft);
  border-top: 2px solid var(--accent);
  background:
    linear-gradient(150deg, rgba(47, 125, 91, 0.16) 0%, rgba(18, 46, 69, 0.92) 58%),
    var(--bg-raised);
}

.page-faq .faq-outro__text {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: clamp(0.9375rem, 1.05vw, 1rem);
  line-height: 1.8;
  color: var(--ink-dim);
}

.page-faq .faq-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .faq-outro__actions .btn {
  text-decoration: none;
}

@media (max-width: 520px) {
  .page-faq .faq-outro__actions .btn {
    flex: 1 1 auto;
    text-align: center;
    justify-content: center;
  }
}