.page-faq {
  --faq-sticky-top: 108px;
  background: var(--ink-900);
  color: var(--ice);
  font-family: var(--font-sans);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  padding-block: clamp(38px, 6.5vw, 82px) clamp(28px, 4vw, 46px);
}

.page-faq .faq-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: var(--ink-900);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  filter: saturate(0.65) contrast(1.1);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(11, 31, 28, 0.74) 0%, rgba(11, 31, 28, 0.92) 56%, var(--ink-900) 100%),
    radial-gradient(92% 118% at 78% 0%, rgba(53, 199, 176, 0.18), transparent 62%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: repeating-linear-gradient(180deg, rgba(234, 242, 240, 0.04) 0 1px, transparent 1px 5px);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 2;
}

.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--ice-dim);
}

.page-faq .breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-faq .breadcrumb li + li::before {
  content: "/";
  color: var(--line-strong);
}

.page-faq .breadcrumb a {
  color: var(--ice-dim);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-faq .breadcrumb a:hover {
  color: var(--amber-soft);
}

.page-faq .faq-hero .kicker {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  max-width: 24ch;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(27px, 4.6vw, 46px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--ice-bright);
}

.page-faq .faq-hero .lede {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.72;
  color: var(--ice);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--ice-dim);
}

.page-faq .faq-hero__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 13px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: rgba(18, 52, 48, 0.52);
}

.page-faq .faq-hero__facts .num {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--amber);
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding-block: clamp(28px, 4.5vw, 58px) clamp(48px, 7vw, 92px);
}

/* ---------- 左侧问题目录 ---------- */
.page-faq .faq-index {
  padding: 18px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(168deg, rgba(18, 52, 48, 0.72), rgba(11, 31, 28, 0.56));
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ice-dim);
}

.page-faq .faq-index__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: block;
  padding: 10px 12px 10px 14px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  font-size: 14px;
  line-height: 1.45;
  color: var(--ice-dim);
  text-decoration: none;
  transition: color 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-index__link:hover {
  color: var(--ice-bright);
  background: rgba(30, 74, 68, 0.36);
}

.page-faq .faq-index__link.is-active {
  color: var(--amber);
  border-left-color: var(--amber);
  background: linear-gradient(90deg, rgba(255, 158, 44, 0.14), transparent 74%);
}

.page-faq .faq-index__hint {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  line-height: 1.65;
  color: var(--ice-dim);
}

/* ---------- 右侧问答 ---------- */
.page-faq .faq-answers {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: var(--faq-sticky-top);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(38px, 5vw, 62px);
}

.page-faq .faq-group .section-head {
  padding-bottom: 12px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group .section-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ice-bright);
}

.page-faq .faq-group .section-head__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ice-dim);
}

.page-faq .faq-item {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(18, 52, 48, 0.5), rgba(11, 31, 28, 0.62));
  overflow: hidden;
  transition: border-color 0.2s var(--ease);
}

.page-faq .faq-item + .faq-item {
  margin-top: 10px;
}

.page-faq .faq-item:hover {
  border-color: var(--line-strong);
}

.page-faq .faq-item__heading {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  padding: 15px 16px;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ice-bright);
  transition: color 0.2s var(--ease);
}

.page-faq .faq-item__q:hover {
  color: var(--amber-soft);
}

.page-faq .faq-item__q > .num {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__sign {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
}

.page-faq .faq-item__a {
  padding: 0 16px 16px 48px;
  font-size: 16px;
  line-height: 1.72;
  color: var(--ice);
}

.page-faq .faq-item__a p {
  margin: 0;
}

.page-faq .faq-item__a a {
  color: var(--amber-soft);
  text-decoration: underline;
  text-decoration-color: rgba(255, 196, 107, 0.45);
  text-underline-offset: 3px;
}

.page-faq .faq-item__a a:hover {
  color: var(--amber);
}

/* ---------- 步骤 ---------- */
.page-faq .faq-steps {
  counter-reset: faq-step;
  display: grid;
  gap: 10px;
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-left: 2px solid rgba(53, 199, 176, 0.5);
  border-radius: var(--r-sm);
  background: rgba(18, 52, 48, 0.42);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ice);
}

.page-faq .faq-steps li::before {
  counter-increment: faq-step;
  content: counter(faq-step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: var(--amber);
}

.page-faq .faq-steps a {
  color: var(--amber-soft);
  text-decoration: underline;
  text-decoration-color: rgba(255, 196, 107, 0.45);
  text-underline-offset: 3px;
}

/* ---------- 示意图 ---------- */
.page-faq .faq-diagram {
  margin: 22px 0 6px;
}

.page-faq .faq-diagram img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--r-md);
}

.page-faq .faq-diagram .figure__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ice-dim);
}

.page-faq .data-note {
  margin: 14px 0 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--ice-dim);
}

.page-faq .data-note a {
  color: var(--ice);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 季票字段 ---------- */
.page-faq .faq-fields {
  display: grid;
  gap: 8px;
  margin: 0 0 16px;
  padding: 0;
}

.page-faq .faq-fields__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 12px 14px;
  border-left: 2px solid var(--ink-700);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(18, 52, 48, 0.42);
}

.page-faq .faq-fields dt {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--amber-soft);
}

.page-faq .faq-fields dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ice);
}

/* ---------- 纠错提示框 ---------- */
.page-faq .faq-callout {
  margin-bottom: 16px;
  padding: 16px 18px;
  border: 1px solid rgba(255, 158, 44, 0.3);
  border-radius: var(--r-md);
  background: linear-gradient(140deg, rgba(255, 158, 44, 0.12), rgba(18, 52, 48, 0.5));
}

.page-faq .faq-callout__title {
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-faq .faq-callout ul {
  display: grid;
  gap: 6px;
  margin: 0;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ice);
}

/* ---------- 相关页面 ---------- */
.page-faq .faq-related {
  margin-top: clamp(38px, 5vw, 62px);
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-related__title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ice-dim);
}

.page-faq .faq-related__list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-related__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 10px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: rgba(18, 52, 48, 0.34);
  font-size: 14px;
}

.page-faq .faq-related__list a {
  font-weight: 600;
  color: var(--amber-soft);
  text-decoration: none;
}

.page-faq .faq-related__list a:hover {
  color: var(--amber);
}

.page-faq .faq-related__list span {
  color: var(--ice-dim);
  line-height: 1.6;
}

/* ---------- 响应式 ---------- */
@media (max-width: 899px) {
  .page-faq .faq-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 560px) {
  .page-faq .faq-fields__row {
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(190px, 236px) minmax(0, 1fr);
    gap: 44px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky-top);
  }

  .page-faq .faq-hero h1 {
    max-width: 26ch;
  }
}
</PAGE_CSS>