.page-faq {
  --faq-rail-w: 292px;
  --faq-gap: clamp(22px, 3vw, 46px);
  background: var(--ink);
  color: var(--white);
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 3vw, 32px) 0 clamp(28px, 4vw, 54px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(90% 130% at 6% 0%, rgba(47, 224, 200, 0.13), transparent 62%),
    radial-gradient(70% 110% at 100% 100%, rgba(255, 122, 26, 0.1), transparent 68%),
    linear-gradient(180deg, var(--panel-deep) 0%, var(--ink) 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(0deg, rgba(201, 214, 223, 0.055) 0 1px, transparent 1px 46px),
    repeating-linear-gradient(90deg, rgba(201, 214, 223, 0.055) 0 1px, transparent 1px 46px);
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
}

.page-faq .faq-hero .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .breadcrumb {
  font-size: 13px;
  color: var(--muted);
}

.page-faq .faq-hero .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

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

.page-faq .faq-hero__inner {
  display: grid;
  gap: 26px;
  margin-top: clamp(24px, 4vw, 52px);
}

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

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-size: clamp(29px, 4.8vw, 54px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--white);
  text-wrap: balance;
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.35vw, 17px);
  line-height: 1.78;
  color: var(--muted);
}

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

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 34px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__meta .stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-faq .faq-hero__meta .stat__value {
  font-size: clamp(34px, 4.4vw, 52px);
  line-height: 1;
}

.page-faq .faq-hero__meta .stat__label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

@media (min-width: 960px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.85fr);
    align-items: end;
    column-gap: 56px;
  }

  .page-faq .faq-hero__meta {
    flex-direction: column;
    gap: 22px;
    padding-top: 0;
    padding-left: 32px;
    border-top: 0;
    border-left: 1px solid var(--line);
  }
}

/* ---------- 主体分屏 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
  padding-top: clamp(28px, 4.5vw, 60px);
  padding-bottom: clamp(48px, 8vw, 100px);
}

.page-faq .faq-layout > * {
  min-width: 0;
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
  }
}

/* ---------- 左侧目录轨道 ---------- */
.page-faq .faq-rail {
  background: var(--panel);
  padding: 22px 20px 26px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-faq .faq-rail__title {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-rail__group + .faq-rail__group {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}

.page-faq .faq-rail__group-link {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
  text-decoration: none;
  transition: color 0.18s ease;
}

.page-faq .faq-rail__group-link:hover,
.page-faq .faq-rail__group-link:focus-visible {
  color: var(--cyan);
}

.page-faq .faq-rail__num {
  font-size: 12px;
  color: var(--amber);
}

.page-faq .faq-rail__count {
  margin-left: auto;
  font-size: 11.5px;
  color: var(--muted);
}

.page-faq .faq-rail__sublist {
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
  border-left: 1px solid var(--line);
}

.page-faq .faq-rail__sublist a {
  display: block;
  padding: 5px 0 5px 13px;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.18s ease, box-shadow 0.18s ease;
}

.page-faq .faq-rail__sublist a:hover,
.page-faq .faq-rail__sublist a:focus-visible {
  color: var(--cyan);
  box-shadow: inset 2px 0 0 0 var(--cyan);
}

@media (min-width: 1024px) {
  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    max-height: calc(100vh - var(--header-h) - 48px);
    overflow-y: auto;
  }

  .page-faq .faq-rail::-webkit-scrollbar {
    width: 6px;
  }

  .page-faq .faq-rail::-webkit-scrollbar-thumb {
    background: rgba(201, 214, 223, 0.24);
  }
}

/* ---------- 右侧问答正文 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(32px, 4.2vw, 58px);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 26px);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 6px 16px;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-strong);
}

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

.page-faq .faq-group__title {
  grid-column: 1;
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(21px, 2.5vw, 29px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-group__count {
  grid-column: 2;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
  white-space: nowrap;
}

/* 问答卡片 */
.page-faq .faq-item {
  position: relative;
  margin: 0 0 12px;
  background: var(--zone-indigo);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  transition: background 0.2s ease;
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--cyan);
  opacity: 0.5;
  transition: opacity 0.2s ease;
}

.page-faq .faq-item[open] {
  background: linear-gradient(150deg, rgba(47, 224, 200, 0.08) 0%, var(--zone-indigo) 46%);
}

.page-faq .faq-item[open]::before {
  opacity: 1;
}

.page-faq .faq-item__q {
  position: relative;
  display: block;
  padding: 18px 58px 18px 22px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: clamp(15.5px, 1.35vw, 17px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--white);
  transition: color 0.18s ease;
}

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

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

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

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

.page-faq .faq-item__q::before,
.page-faq .faq-item__q::after {
  content: "";
  position: absolute;
  top: 50%;
  background: var(--cyan);
  border-radius: 1px;
  transition: transform 0.25s ease, opacity 0.2s ease;
}

.page-faq .faq-item__q::before {
  right: 22px;
  width: 14px;
  height: 2px;
  transform: translateY(-50%);
}

.page-faq .faq-item__q::after {
  right: 28px;
  width: 2px;
  height: 14px;
  transform: translateY(-50%);
}

.page-faq .faq-item[open] .faq-item__q::after {
  transform: translateY(-50%) rotate(90deg);
  opacity: 0;
}

.page-faq .faq-item__a {
  max-width: 68ch;
  padding: 0 22px 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.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(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 224, 200, 0.42);
}

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

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

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

/* ---------- 图片 ---------- */
.page-faq .faq-figure,
.page-faq .faq-support__figure {
  margin: 0 0 26px;
}

.page-faq .faq-support__figure {
  margin-bottom: 0;
}

.page-faq .media__frame {
  overflow: hidden;
  border: 1px solid var(--line);
}

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

.page-faq .media__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 客服区块 ---------- */
.page-faq .faq-support {
  padding: clamp(24px, 3.6vw, 46px);
  background:
    radial-gradient(110% 120% at 100% 0%, rgba(255, 122, 26, 0.14), transparent 62%),
    linear-gradient(140deg, var(--zone-teal) 0%, var(--panel) 72%);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  scroll-margin-top: calc(var(--header-h) + 26px);
}

.page-faq .faq-support__lead {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

.page-faq .faq-support__list {
  display: grid;
  gap: 10px;
  margin: 20px 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-support__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding: 13px 16px;
  background: rgba(6, 16, 32, 0.58);
  border-left: 3px solid var(--orange);
}

.page-faq .faq-support__label {
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-support__value {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--white);
  word-break: break-word;
}

.page-faq .faq-support .btn {
  margin-top: 22px;
}

@media (min-width: 860px) {
  .page-faq .faq-support {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: center;
    gap: clamp(26px, 3vw, 44px);
  }

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

/* ---------- 窄屏 ---------- */
@media (max-width: 599px) {
  .page-faq .faq-hero__jump {
    gap: 8px;
  }

  .page-faq .faq-item__q {
    padding: 16px 52px 16px 18px;
  }

  .page-faq .faq-item__a {
    padding: 0 18px 18px;
  }

  .page-faq .faq-item__q::before {
    right: 18px;
  }

  .page-faq .faq-item__q::after {
    right: 24px;
  }

  .page-faq .faq-support__value {
    font-size: 14px;
  }
}

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

  .page-faq .faq-item__q::before,
  .page-faq .faq-item__q::after,
  .page-faq .faq-item::before {
    transition: none;
  }
}