/* ===== 帮助中心 / page-faq ===== */
.page-faq {
  background: var(--c-deep);
  color: var(--c-mist);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 38px 0 54px;
  background:
    radial-gradient(118% 92% at 84% 0%, rgba(255, 106, 26, 0.17) 0%, rgba(255, 106, 26, 0) 58%),
    radial-gradient(92% 82% at 4% 6%, rgba(47, 209, 220, 0.12) 0%, rgba(47, 209, 220, 0) 62%),
    linear-gradient(180deg, var(--c-ink) 0%, var(--c-deep) 100%);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero .breadcrumbs {
  margin-bottom: 26px;
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
}

.page-faq .faq-h1 {
  margin: 12px 0 0;
  max-width: 22ch;
  font-size: clamp(30px, 5.2vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.012em;
  font-weight: 800;
  color: var(--c-mist);
}

.page-faq .faq-lede {
  margin: 18px 0 0;
  max-width: 44ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--c-grayblue);
}

.page-faq .faq-hero-card {
  position: relative;
  padding: 26px 22px 22px;
  background: linear-gradient(180deg, rgba(10, 39, 64, 0.94), rgba(5, 25, 43, 0.6));
  box-shadow: inset 0 0 0 1px var(--line), 0 18px 40px -28px rgba(0, 0, 0, 0.95);
}

.page-faq .faq-hero-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-orange), var(--c-amber) 55%, var(--c-cyan));
}

.page-faq .faq-card-label {
  margin: 0;
  color: var(--c-cyan);
}

.page-faq .faq-card-version {
  margin: 10px 0 0;
  font-family: var(--font-cond);
  font-size: 32px;
  line-height: 1.02;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--c-mist);
}

.page-faq .faq-card-text {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-grayblue);
}

.page-faq .faq-card-links {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  padding-top: 15px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-orange);
  text-decoration: none;
  transition: gap var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-card-link:hover,
.page-faq .faq-card-link:focus-visible {
  gap: 14px;
  color: var(--c-amber);
}

/* ---------- 章节内边距 ---------- */
.page-faq .faq-quick,
.page-faq .faq-rhythm,
.page-faq .faq-answers,
.page-faq .faq-offline,
.page-faq .faq-support {
  padding: 60px 0;
}

/* ---------- 三步上手 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-step {
  padding: 24px 0 22px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-step-no {
  margin: 0;
  font-family: var(--font-cond);
  font-size: 40px;
  line-height: 0.9;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-faq .faq-step:nth-child(1) .faq-step-no { color: var(--c-orange); }
.page-faq .faq-step:nth-child(2) .faq-step-no { color: var(--c-cyan); }
.page-faq .faq-step:nth-child(3) .faq-step-no { color: var(--c-amber); }

.page-faq .faq-step-title {
  margin: 12px 0 0;
  font-size: 19px;
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--c-mist);
}

.page-faq .faq-step-text {
  margin: 8px 0 0;
  max-width: 34ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-grayblue);
}

.page-faq .faq-quick-note {
  margin: 26px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-grayblue);
}

.page-faq .faq-inline-link {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 209, 220, 0.45);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-inline-link:hover,
.page-faq .faq-inline-link:focus-visible {
  color: var(--c-mist);
  border-bottom-color: var(--c-orange);
}

/* ---------- 更新节奏 ---------- */
.page-faq .faq-rhythm-figure {
  margin: 32px 0 0;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(20, 57, 90, 0.7), rgba(2, 10, 18, 0.95));
}

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

.page-faq .faq-scale {
  display: block;
  width: 100%;
  height: 44px;
  margin: 26px 0 0;
}

.page-faq .faq-timeline {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
}

.page-faq .faq-timeline-item {
  position: relative;
  padding: 0 0 26px 26px;
  border-left: 1px solid var(--line);
}

.page-faq .faq-timeline-item::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 6px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-orange);
  box-shadow: 0 0 0 4px rgba(255, 106, 26, 0.13);
}

.page-faq .faq-timeline-item:nth-child(2)::before {
  background: var(--c-amber);
  box-shadow: 0 0 0 4px rgba(255, 156, 74, 0.13);
}

.page-faq .faq-timeline-item:nth-child(3)::before {
  background: var(--c-cyan);
  box-shadow: 0 0 0 4px rgba(47, 209, 220, 0.13);
}

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

.page-faq .faq-tl-when {
  margin: 0;
  color: var(--c-cyan);
}

.page-faq .faq-tl-title {
  margin: 10px 0 0;
  font-size: 17px;
  line-height: 1.4;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--c-mist);
}

.page-faq .faq-tl-text {
  margin: 7px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-grayblue);
}

/* ---------- 问答布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-faq .faq-rail {
  margin-bottom: 30px;
}

.page-faq .faq-rail-label {
  margin: 0 0 12px;
  color: var(--c-grayblue);
}

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

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

.page-faq .faq-rail-link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  font-size: 14px;
  color: var(--c-grayblue);
  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-link:hover,
.page-faq .faq-rail-link:focus-visible {
  color: var(--c-mist);
  border-color: var(--c-steel);
  background: rgba(20, 57, 90, 0.42);
}

.page-faq .faq-rail-no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-orange);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group + .faq-group {
  margin-top: 56px;
}

.page-faq .faq-group-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-group-no {
  font-family: var(--font-cond);
  font-size: 26px;
  line-height: 1;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--c-orange);
}

.page-faq .faq-group-title {
  margin: 0;
  font-size: 21px;
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--c-mist);
}

.page-faq .faq-group-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-grayblue);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-accordion {
  border-top: 0;
}

.page-faq .accordion-item {
  border-bottom: 1px solid var(--line);
  transition: background-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .accordion-item[data-open] {
  background: linear-gradient(90deg, rgba(10, 39, 64, 0.88) 0%, rgba(10, 39, 64, 0.05) 100%);
  box-shadow: inset 2px 0 0 0 var(--c-orange);
}

.page-faq .accordion-heading {
  margin: 0;
}

.page-faq .accordion-trigger {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr) 16px;
  gap: 12px;
  align-items: start;
  width: 100%;
  padding: 18px 10px 18px 4px;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--c-mist);
  transition: color var(--dur) var(--ease);
}

.page-faq .accordion-trigger:hover {
  color: var(--c-orange);
}

.page-faq .accordion-trigger:focus-visible {
  outline: 1px solid var(--c-cyan);
  outline-offset: 2px;
}

.page-faq .faq-q-no {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.85;
  letter-spacing: 0.06em;
  color: var(--c-grayblue);
  transition: color var(--dur) var(--ease);
}

.page-faq .accordion-item[data-open] .faq-q-no {
  color: var(--c-orange);
}

.page-faq .faq-q-text {
  min-width: 0;
}

.page-faq .accordion-sign {
  position: relative;
  display: block;
  width: 14px;
  height: 14px;
  margin-top: 5px;
  justify-self: end;
  color: var(--c-grayblue);
}

.page-faq .accordion-sign::before,
.page-faq .accordion-sign::after {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 14px;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-faq .accordion-sign::after {
  transform: rotate(90deg);
}

.page-faq .accordion-item[data-open] .accordion-sign {
  color: var(--c-orange);
}

.page-faq .accordion-item[data-open] .accordion-sign::after {
  transform: rotate(0deg);
  opacity: 0;
}

.page-faq .accordion-panel {
  padding: 0 10px 20px 44px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--c-grayblue);
}

.page-faq .accordion-panel p {
  margin: 0;
  max-width: 60ch;
}

.page-faq .accordion-panel p + p {
  margin-top: 10px;
}

.page-faq .accordion-item:not([data-open]) .accordion-panel {
  display: none;
}

/* ---------- 移动端与离线 ---------- */
.page-faq .faq-offline {
  background: linear-gradient(180deg, var(--c-deep) 0%, var(--c-ink) 100%);
  border-top: 1px solid var(--line);
}

.page-faq .faq-offline-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}

.page-faq .faq-offline-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(20, 57, 90, 0.72), rgba(2, 10, 18, 0.95));
}

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

.page-faq .faq-offline-figure .media-caption {
  padding: 12px 14px 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  line-height: 1.7;
  color: var(--c-grayblue);
  border-top: 1px solid var(--line);
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-support {
  background: var(--c-ink);
  border-top: 1px solid var(--line);
}

.page-faq .faq-support-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}

.page-faq .faq-support-text {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--c-grayblue);
}

.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-support-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin: 24px 0 0;
  font-size: 14px;
}

.page-faq .faq-support-facts {
  border-top: 1px solid var(--line-strong);
}

.page-faq .faq-support-facts .contact-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 5px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-support-facts .contact-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-cyan);
}

.page-faq .faq-support-facts .contact-value {
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-mist);
  overflow-wrap: anywhere;
}

.page-faq .faq-support-note {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--c-grayblue);
}

/* ---------- 中小屏 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-support-facts .contact-row {
    grid-template-columns: 106px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }
}

@media (min-width: 800px) {
  .page-faq .faq-steps {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-bottom: 0;
  }

  .page-faq .faq-step {
    padding: 30px 30px 6px;
    border-bottom: 0;
    border-top: 1px solid var(--line);
  }

  .page-faq .faq-step:first-child {
    padding-left: 0;
  }

  .page-faq .faq-step:last-child {
    padding-right: 0;
  }

  .page-faq .faq-step + .faq-step {
    border-left: 1px solid var(--line);
  }

  .page-faq .accordion-trigger {
    padding: 19px 14px 19px 6px;
    font-size: 17px;
  }

  .page-faq .accordion-panel {
    padding: 0 44px 22px 50px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-timeline {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 34px;
  }

  .page-faq .faq-timeline-item {
    padding: 30px 30px 0 0;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .page-faq .faq-timeline-item::before {
    left: 0;
    top: -4px;
  }

  .page-faq .faq-timeline-item:last-child {
    padding-right: 0;
  }

  .page-faq .faq-timeline-item + .faq-timeline-item {
    padding-left: 30px;
  }

  .page-faq .faq-timeline-item + .faq-timeline-item::before {
    left: 30px;
  }
}

@media (min-width: 940px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.85fr);
    gap: 56px;
    align-items: end;
  }

  .page-faq .faq-offline-grid {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 0.78fr);
    gap: 54px;
    align-items: start;
  }

  .page-faq .faq-support-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 58px;
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 232px) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-total) + 24px);
    margin-bottom: 0;
  }

  .page-faq .faq-rail-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail-link {
    display: grid;
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 12px;
    width: 100%;
    border: 0;
    border-bottom: 1px solid var(--line);
    padding: 13px 0;
    font-size: 15px;
    background: none;
    transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
  }

  .page-faq .faq-rail-link:hover,
  .page-faq .faq-rail-link:focus-visible {
    padding-left: 8px;
    background: none;
  }

  .page-faq .faq-group + .faq-group {
    margin-top: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-card-link,
  .page-faq .faq-inline-link,
  .page-faq .faq-rail-link,
  .page-faq .accordion-item,
  .page-faq .accordion-trigger,
  .page-faq .faq-q-no,
  .page-faq .accordion-sign::before,
  .page-faq .accordion-sign::after {
    transition: none;
  }
}