.page-faq {
  --faq-sticky-top: 104px;
}

.page-faq .crumbs {
  margin: 8px 0 4px;
}

/* 首屏 */
.page-faq .faq-hero {
  max-width: 780px;
  padding: 18px 0 4px;
}

.page-faq .faq-hero h1 {
  margin: 10px 0 14px;
  font-size: clamp(1.9rem, 7.4vw, 3.5rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero .lede {
  margin: 0;
  font-size: clamp(1rem, 2.6vw, 1.12rem);
  line-height: 1.75;
  color: var(--muted);
}

/* 场景标签横条 */
.page-faq .scene-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 20px 0 6px;
  margin-bottom: 6px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .scene-tabs::-webkit-scrollbar {
  display: none;
}

.page-faq .scene-tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(18, 49, 79, 0.88), rgba(10, 30, 51, 0.92));
  color: var(--paper);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.18s ease, color 0.18s ease, transform 0.18s ease;
}

.page-faq .scene-tab:hover {
  border-color: var(--cyan-300);
  color: var(--cyan-300);
  transform: translateY(-1px);
}

.page-faq .scene-tab:focus-visible {
  outline: 2px solid var(--cyan-300);
  outline-offset: 2px;
}

/* 左右分栏 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  padding: 10px 0 64px;
}

.page-faq .faq-rail {
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.page-faq .rail-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .rail-list {
  list-style: none;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  margin: 0;
  padding: 0 0 4px;
  scrollbar-width: none;
}

.page-faq .rail-list::-webkit-scrollbar {
  display: none;
}

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

.page-faq .rail-list a {
  display: block;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.86rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.page-faq .rail-list a:hover {
  color: var(--cyan-300);
  border-color: var(--cyan-300);
}

.page-faq .rail-help {
  margin-top: 18px;
  padding: 16px;
  border-radius: var(--radius-card);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(255, 122, 26, 0.11), rgba(10, 30, 51, 0.88));
}

.page-faq .rail-help-t {
  margin: 0 0 6px;
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .rail-help-x {
  margin: 0 0 12px;
  font-size: 0.86rem;
  line-height: 1.65;
  color: var(--muted);
}

.page-faq .rail-help .btn {
  width: 100%;
  justify-content: center;
}

/* 问题分组 */
.page-faq .faq-body {
  counter-reset: qa;
  min-width: 0;
}

.page-faq .faq-section {
  counter-reset: qa;
  scroll-margin-top: 96px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-section + .faq-section {
  margin-top: 34px;
}

.page-faq .faq-section:target {
  border-top-color: var(--cyan-500);
}

.page-faq .sec-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-bottom: 18px;
}

.page-faq .sec-index {
  display: inline-grid;
  place-items: center;
  min-width: 42px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--cyan-500);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-section:target .sec-index {
  background: var(--cyan-500);
  border-color: var(--cyan-500);
  color: var(--ink-900);
}

.page-faq .sec-head h2 {
  margin: 0;
  font-size: clamp(1.35rem, 5vw, 2rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.page-faq .sec-sum {
  flex: 1 1 100%;
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.72;
  color: var(--muted);
}

/* 折叠问答 */
.page-faq .qa {
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: linear-gradient(180deg, rgba(10, 30, 51, 0.92), rgba(6, 18, 31, 0.96));
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .qa:hover {
  border-color: rgba(124, 255, 233, 0.4);
}

.page-faq .qa[open] {
  border-color: rgba(0, 224, 198, 0.5);
  box-shadow: var(--shadow-panel);
}

.page-faq .qa > summary {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 46px 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--paper);
}

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

.page-faq .qa > summary::before {
  counter-increment: qa;
  content: counter(qa, decimal-leading-zero);
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.02em;
  color: var(--amber-500);
}

.page-faq .qa > summary::after {
  content: "+";
  position: absolute;
  top: 13px;
  right: 15px;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  line-height: 1;
  color: var(--cyan-500);
}

.page-faq .qa[open] > summary::after {
  content: "\2212";
  border-color: rgba(0, 224, 198, 0.6);
}

.page-faq .qa > summary:focus-visible {
  outline: 2px solid var(--cyan-300);
  outline-offset: -3px;
}

.page-faq .qa-body {
  padding: 2px 18px 18px 42px;
  font-size: 0.93rem;
  line-height: 1.78;
  color: var(--muted);
}

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

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

.page-faq .qa-body a {
  color: var(--cyan-300);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-faq .qa-body a:hover {
  color: var(--cyan-500);
}

.page-faq .qa-steps {
  list-style: none;
  counter-reset: step;
  display: grid;
  gap: 10px;
  margin: 12px 0 10px;
  padding: 0;
}

.page-faq .qa-steps > li {
  counter-increment: step;
  position: relative;
  padding-left: 34px;
}

.page-faq .qa-steps > li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 1px;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 7px;
  background: rgba(255, 122, 26, 0.12);
  border: 1px solid rgba(255, 122, 26, 0.42);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  line-height: 1;
  color: var(--amber-500);
}

/* 配图 */
.page-faq .faq-fig {
  margin: 18px 0 4px;
}

.page-faq .faq-fig .media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-card);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--ink-700), var(--ink-900));
}

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

/* 联系客服面板 */
.page-faq .contact-board {
  padding: 22px;
}

.page-faq .contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-faq .contact-item {
  padding: 14px 16px;
  border-radius: var(--radius-soft);
  border: 1px solid var(--line);
  background: rgba(6, 18, 31, 0.62);
}

.page-faq .contact-k {
  display: block;
  margin-bottom: 6px;
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-faq .contact-v {
  display: block;
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .contact-v.mono {
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--cyan-300);
}

.page-faq .contact-note {
  margin: 18px 0 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .contact-note a {
  color: var(--cyan-300);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-faq .contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

/* 平板及以上 */
@media (min-width: 640px) {
  .page-faq .contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 34px;
    padding-top: 22px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: var(--faq-sticky-top);
    align-self: start;
    border-top: none;
    padding-top: 0;
  }

  .page-faq .rail-list {
    display: block;
    overflow: visible;
    padding: 0;
  }

  .page-faq .rail-list li {
    margin-bottom: 2px;
  }

  .page-faq .rail-list a {
    padding: 9px 12px;
    border-radius: var(--radius-soft);
    border-color: transparent;
    border-left: 2px solid transparent;
  }

  .page-faq .rail-list a:hover {
    background: rgba(0, 224, 198, 0.08);
    border-left-color: var(--cyan-500);
  }

  .page-faq .faq-section:first-child {
    padding-top: 0;
    border-top-color: transparent;
  }

  .page-faq .contact-board {
    padding: 26px;
  }
}