.page-faq {
  --faq-index-w: 232px;
  --faq-gap: clamp(18px, 3vw, 40px);
}

/* ============ 面包屑 ============ */
.page-faq .breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--mute);
  margin: 0 0 clamp(16px, 2.4vw, 26px);
}

.page-faq .breadcrumbs__link {
  color: var(--mute);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .breadcrumbs__link:hover,
.page-faq .breadcrumbs__link:focus-visible {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

.page-faq .breadcrumbs__current {
  color: var(--ink);
}

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

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  margin: 0 0 clamp(30px, 5vw, 60px);
}

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

.page-faq .faq-hero__media .figure__media {
  position: relative;
  aspect-ratio: 16 / 7;
  overflow: hidden;
  border-radius: var(--radius);
  background: linear-gradient(140deg, #0a1d2e 0%, #050f1a 55%, #0d2a3e 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 34px), 0 100%);
}

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

.page-faq .faq-hero__text {
  margin-top: clamp(18px, 3vw, 30px);
  padding-left: clamp(14px, 2vw, 22px);
  border-left: 3px solid var(--neon);
}

.page-faq .faq-hero__text .eyebrow {
  margin: 0 0 10px;
}

.page-faq .faq-hero__text h1 {
  margin: 0 0 14px;
  font-size: clamp(28px, 5.2vw, 54px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.16;
  color: var(--ink);
}

.page-faq .faq-hero__text .lead {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mute);
}

/* ============ 两栏骨架 ============ */
.page-faq .faq-layout {
  display: block;
}

/* ============ 左侧问题索引 ============ */
.page-faq .faq-index {
  margin: 0 0 clamp(24px, 4vw, 44px);
}

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

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index__item {
  flex: 0 0 auto;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 14px 11px;
  border-bottom: 2px solid var(--line);
  text-decoration: none;
  color: var(--mute);
  font-size: 14px;
  white-space: nowrap;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--neon);
  background: rgba(47, 243, 208, 0.06);
}

.page-faq .faq-index__num {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--neon);
}

.page-faq .faq-index__hint {
  display: none;
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mute);
}

/* ============ 分组 ============ */
.page-faq .faq-group {
  margin: 0 0 clamp(34px, 5vw, 62px);
  scroll-margin-top: 96px;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: clamp(14px, 2vw, 22px);
}

.page-faq .faq-group__num {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--neon);
  flex: 0 0 auto;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(20px, 2.7vw, 30px);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.3;
  color: var(--ink);
}

.page-faq .faq-group__lead {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mute);
}

.page-faq .faq-group__tail {
  margin: clamp(14px, 2vw, 22px) 0 0;
  max-width: 66ch;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mute);
  border-left: 2px solid var(--line);
  padding-left: 14px;
}

/* ============ 问答条目 ============ */
.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 0;
  margin: 0;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
  transition: color 0.2s ease;
}

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

.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 19px;
  line-height: 1;
  color: var(--neon);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "–";
}

.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible {
  color: var(--neon);
}

.page-faq .faq-item__a {
  overflow: hidden;
  padding: 0 0 20px 2px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mute);
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
}

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

.page-faq .faq-item__a a {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 243, 208, 0.4);
}

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

.page-faq .faq-item[open] .faq-item__a {
  animation: faq-open 0.26s ease-out;
}

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

/* ============ 对照表 ============ */
.page-faq .faq-tablewrap {
  margin: 14px 0 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-left: 2px solid var(--line);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .faq-table__cap {
  caption-side: top;
  text-align: left;
  padding: 0 0 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mute);
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  line-height: 1.65;
}

.page-faq .faq-table thead th {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--mute);
  border-bottom-color: var(--line);
}

.page-faq .faq-table thead th:nth-child(2) {
  color: var(--neon);
}

.page-faq .faq-table thead th:nth-child(3) {
  color: var(--blue);
}

.page-faq .faq-table tbody th {
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
}

.page-faq .faq-table tbody td {
  color: var(--mute);
}

/* ============ 路径示意 ============ */
.page-faq .faq-path__scroll {
  margin: 0 0 clamp(20px, 3vw, 30px);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-path {
  display: block;
  width: 100%;
  min-width: 520px;
  height: auto;
}

.page-faq .faq-path__rail {
  stroke: var(--line);
  stroke-width: 2;
}

.page-faq .faq-path__node {
  fill: var(--deck);
  stroke: var(--neon);
  stroke-width: 2;
}

.page-faq .faq-path__node:last-of-type {
  fill: var(--neon);
  stroke: var(--neon);
}

.page-faq .faq-path__label {
  fill: var(--mute);
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.04em;
}

/* ============ 步骤列表 + 配图 ============ */
.page-faq .faq-archive {
  display: block;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-steps__item {
  position: relative;
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 20px;
}

.page-faq .faq-steps__item::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 40px;
  bottom: 4px;
  width: 1px;
  background: var(--line);
}

.page-faq .faq-steps__item:last-child {
  padding-bottom: 0;
}

.page-faq .faq-steps__item:last-child::before {
  display: none;
}

.page-faq .faq-steps__num {
  position: relative;
  z-index: 1;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--neon);
  color: var(--night);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .faq-steps__num:hover,
.page-faq .faq-steps__num:focus-visible {
  background: var(--yellow);
  box-shadow: 0 0 0 4px rgba(255, 212, 71, 0.18);
}

.page-faq .faq-steps__text strong {
  display: block;
  margin-bottom: 5px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.55;
}

.page-faq .faq-steps__text p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mute);
}

.page-faq .faq-steps__text a {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 243, 208, 0.4);
}

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

.page-faq .faq-archive__fig {
  margin: clamp(22px, 3vw, 34px) 0 0;
}

.page-faq .faq-archive__fig .figure__media {
  overflow: hidden;
  border-radius: var(--radius);
  background: linear-gradient(150deg, #0a1d2e, #050f1a 70%, #10334a);
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 0 100%);
}

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

.page-faq .faq-archive__fig .figure__cap {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--mute);
}

/* ============ 联系方式区 ============ */
.page-faq .faq-group--help {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-faq .faq-contact {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
}

.page-faq .faq-contact__channels,
.page-faq .faq-contact__prep {
  padding: clamp(18px, 3vw, 28px);
  background: var(--deck);
  border-radius: var(--radius);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
  border-left: 3px solid var(--neon);
}

.page-faq .faq-contact__prep {
  border-left-color: var(--line);
}

.page-faq .faq-contact__label {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mute);
}

.page-faq .faq-contact__list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 18px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-contact__row:last-child {
  border-bottom: 0;
}

.page-faq .faq-contact__key {
  flex: 0 0 auto;
  min-width: 72px;
  font-size: 13px;
  color: var(--mute);
}

.page-faq .faq-contact__val {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  word-break: break-all;
}

.page-faq .faq-contact__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 4px;
}

.page-faq .faq-contact__prep-list {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
}

.page-faq .faq-contact__prep-list li {
  position: relative;
  padding: 7px 0 7px 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .faq-contact__prep-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 9px;
  height: 2px;
  background: var(--orange);
}

.page-faq .faq-contact__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mute);
}

/* ============ 平板及桌面 ============ */
@media (min-width: 760px) {
  .page-faq .faq-hero__media .figure__media {
    aspect-ratio: 21 / 9;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 56px), 0 100%);
  }

  .page-faq .faq-hero__text {
    margin-top: clamp(-70px, -6vw, -30px);
    margin-left: clamp(16px, 5vw, 72px);
    padding: clamp(22px, 3vw, 34px) clamp(20px, 3vw, 40px);
    max-width: 720px;
    position: relative;
    z-index: 2;
    background: linear-gradient(160deg, rgba(10, 29, 46, 0.97), rgba(5, 15, 26, 0.93));
    border-left: 3px solid var(--neon);
    clip-path: polygon(0 0, 100% 0, calc(100% - 34px) 100%, 0 100%);
  }

  .page-faq .faq-archive {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
    gap: clamp(20px, 3vw, 36px);
    align-items: start;
  }

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

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

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

  .page-faq .faq-index {
    position: sticky;
    top: 28px;
    margin-bottom: 0;
    padding-right: 4px;
  }

  .page-faq .faq-index__list {
    display: block;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-faq .faq-index__item + .faq-index__item {
    margin-top: 2px;
  }

  .page-faq .faq-index__link {
    border-bottom: 0;
    border-left: 2px solid var(--line);
    padding: 11px 14px 11px 16px;
    white-space: normal;
    line-height: 1.5;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-left-color: var(--neon);
    border-bottom-color: transparent;
  }

  .page-faq .faq-index__hint {
    display: block;
  }

  .page-faq .faq-index__title {
    padding-left: 16px;
  }
}

@media (min-width: 1180px) {
  .page-faq {
    --faq-index-w: 260px;
  }

  .page-faq .faq-archive {
    grid-template-columns: minmax(0, 1fr) minmax(0, 340px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-item__a {
    animation: none;
  }

  .page-faq .faq-item__q,
  .page-faq .faq-index__link,
  .page-faq .faq-steps__num,
  .page-faq .faq-item__a a {
    transition: none;
  }
}
</main>