/* ===== 帮助中心页面 ===== */
.page-faq {
  position: relative;
  color: var(--lb-warm);
}

.page-faq .faq-top {
  position: relative;
  padding: clamp(18px, 3vw, 30px) 0 clamp(26px, 4vw, 44px);
  background:
    radial-gradient(760px 380px at 8% -12%, rgba(61, 255, 193, 0.16), transparent 64%),
    radial-gradient(620px 340px at 94% 4%, rgba(255, 122, 26, 0.11), transparent 62%);
}

.page-faq .faq-hero {
  display: grid;
  gap: 24px;
  margin-top: 18px;
}

.page-faq .faq-hero h1 {
  margin: 10px 0 0;
  font-family: var(--lb-font-display);
  font-size: clamp(32px, 6.2vw, 58px);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: 0.02em;
  color: var(--lb-white);
}

.page-faq .faq-hero__lede {
  margin: 16px 0 0;
  max-width: 56ch;
  font-size: clamp(14.5px, 1.6vw, 16px);
  line-height: 1.8;
  color: var(--lb-muted);
}

.page-faq .faq-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .faq-hero__media {
  margin: 0;
  border-radius: var(--lb-radius-l);
  overflow: hidden;
  border: 1px solid var(--lb-line);
  background: var(--lb-panel-deep);
}

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

.page-faq .faq-hero__media figcaption {
  padding: 10px 16px 12px;
  border-top: 1px solid var(--lb-line);
  font-family: var(--lb-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--lb-mist);
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: center;
    gap: 40px;
  }
}

/* 分类胶囊 */
.page-faq .faq-cats {
  padding: 0 0 clamp(16px, 3vw, 26px);
}

.page-faq .faq-cats h2 {
  margin: 0 0 14px;
  font-family: var(--lb-font-display);
  font-size: clamp(19px, 2.6vw, 25px);
  font-weight: 750;
  letter-spacing: 0.03em;
  color: var(--lb-white);
}

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

.page-faq .faq-chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 16px;
  border-radius: var(--lb-pill);
  border: 1px solid var(--lb-line);
  background: rgba(18, 48, 42, 0.72);
  color: var(--lb-warm);
  font-size: 13.5px;
  text-decoration: none;
  transition: border-color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  border-color: var(--lb-accent-dim);
  background: rgba(31, 175, 134, 0.18);
  transform: translateY(-2px);
}

.page-faq .faq-chip__n {
  font-family: var(--lb-font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--lb-accent);
}

/* 主体：索引 + 内容 */
.page-faq .faq-body {
  display: grid;
  gap: 20px;
  padding-bottom: clamp(40px, 6vw, 72px);
}

.page-faq .faq-side__label {
  margin: 0 0 10px;
  font-family: var(--lb-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--lb-mist);
}

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

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

.page-faq .faq-side__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: var(--lb-pill);
  border: 1px solid var(--lb-line);
  color: var(--lb-muted);
  font-size: 13px;
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-side__link:hover,
.page-faq .faq-side__link:focus-visible {
  color: var(--lb-accent);
  border-color: var(--lb-accent-dim);
}

.page-faq .faq-side__num {
  font-family: var(--lb-font-mono);
  font-size: 10.5px;
  color: var(--lb-accent-dim);
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--lb-nav-h) + 20px);
  }

  .page-faq .faq-side__list {
    flex-direction: column;
    gap: 6px;
    overflow: visible;
  }

  .page-faq .faq-side__link {
    border-radius: var(--lb-radius-s);
    border-color: transparent;
    border-left: 2px solid var(--lb-line);
    padding: 8px 12px 8px 14px;
  }
}

/* 内容区块 */
.page-faq .faq-block {
  padding: clamp(20px, 3vw, 30px) 0;
  border-top: 1px solid rgba(30, 74, 63, 0.75);
  scroll-margin-top: calc(var(--lb-nav-h) + 24px);
}

.page-faq .faq-block:first-child {
  border-top: none;
  padding-top: 0;
}

.page-faq .faq-block__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
}

.page-faq .faq-block__num {
  flex: none;
  padding: 3px 9px;
  border-radius: var(--lb-pill);
  background: rgba(61, 255, 193, 0.1);
  font-family: var(--lb-font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--lb-accent);
}

.page-faq .faq-block h2 {
  margin: 0;
  font-family: var(--lb-font-display);
  font-size: clamp(22px, 3.2vw, 32px);
  font-weight: 750;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--lb-white);
}

.page-faq .faq-block p {
  margin: 0 0 12px;
  max-width: 68ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--lb-muted);
}

.page-faq .faq-block a:not(.lb-btn):not(.faq-backtop) {
  color: var(--lb-accent);
  text-decoration: none;
  border-bottom: 1px dashed rgba(61, 255, 193, 0.42);
}

.page-faq .faq-block a:not(.lb-btn):not(.faq-backtop):hover {
  border-bottom-color: var(--lb-accent);
}

/* 对照表 */
.page-faq .faq-table-wrap {
  margin: 18px 0 8px;
  overflow-x: auto;
  border: 1px solid var(--lb-line);
  border-radius: var(--lb-radius-m);
  background: rgba(10, 27, 23, 0.62);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .faq-table__cap {
  padding: 12px 14px 6px;
  text-align: left;
  font-family: var(--lb-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--lb-mist);
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--lb-line);
  line-height: 1.65;
}

.page-faq .faq-table thead th {
  background: rgba(31, 175, 134, 0.13);
  font-family: var(--lb-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--lb-mist);
  white-space: nowrap;
}

.page-faq .faq-table tbody th {
  font-weight: 650;
  color: var(--lb-warm);
  white-space: nowrap;
}

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

.page-faq .faq-table tbody tr:last-child th,
.page-faq .faq-table tbody tr:last-child td {
  border-bottom: none;
}

/* 配图 */
.page-faq .faq-figure {
  margin: 20px 0 22px;
  border-radius: var(--lb-radius-l);
  overflow: hidden;
  border: 1px solid var(--lb-line);
  background: var(--lb-panel-deep);
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 16px 12px;
  border-top: 1px solid var(--lb-line);
  font-family: var(--lb-font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--lb-muted);
}

/* 三步操作 */
.page-faq .faq-steps {
  list-style: none;
  margin: 16px 0 20px;
  padding: 0;
  display: grid;
  gap: 12px;
  counter-reset: none;
}

.page-faq .faq-steps__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--lb-line);
  border-radius: var(--lb-radius-m);
  background: linear-gradient(150deg, rgba(18, 48, 42, 0.92), rgba(10, 27, 23, 0.72));
}

.page-faq .faq-steps__num {
  font-family: var(--lb-font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--lb-orange);
  padding-top: 2px;
}

.page-faq .faq-steps__body h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 650;
  color: var(--lb-white);
}

.page-faq .faq-steps__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--lb-muted);
}

/* 折叠问答 */
.page-faq .faq-acc {
  margin-top: 12px;
  border: 1px solid var(--lb-line);
  border-radius: var(--lb-radius-m);
  background: linear-gradient(160deg, rgba(18, 48, 42, 0.9), rgba(10, 27, 23, 0.88));
  overflow: hidden;
}

.page-faq .faq-acc > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 650;
  line-height: 1.55;
  color: var(--lb-warm);
  transition: color 0.2s ease;
}

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

.page-faq .faq-acc > summary::marker {
  content: "";
}

.page-faq .faq-acc > summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--lb-font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--lb-accent);
}

.page-faq .faq-acc[open] > summary::after {
  content: "−";
}

.page-faq .faq-acc[open] > summary {
  color: var(--lb-white);
}

.page-faq .faq-acc > summary:hover {
  color: var(--lb-accent);
}

.page-faq .faq-acc__body {
  padding: 0 18px 16px;
  border-top: 1px solid rgba(30, 74, 63, 0.7);
  padding-top: 12px;
}

.page-faq .faq-acc__body p {
  margin: 0;
  max-width: 66ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--lb-muted);
}

/* 联系支持 */
.page-faq .faq-contact {
  display: grid;
  gap: 10px;
  margin: 18px 0 20px;
}

.page-faq .faq-contact__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 14px 18px;
  border: 1px solid var(--lb-line);
  border-radius: var(--lb-radius-m);
  background: rgba(18, 48, 42, 0.7);
}

.page-faq .faq-contact__label {
  flex: none;
  min-width: 72px;
  font-family: var(--lb-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--lb-mist);
}

.page-faq .faq-contact__value {
  font-size: 15px;
  font-weight: 600;
  color: var(--lb-white);
  text-decoration: none;
  word-break: break-all;
}

.page-faq .faq-contact__value:hover {
  color: var(--lb-accent);
}

.page-faq .faq-backtop {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  padding: 9px 18px;
  border-radius: var(--lb-pill);
  border: 1px solid var(--lb-line);
  font-family: var(--lb-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--lb-muted);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-backtop:hover,
.page-faq .faq-backtop:focus-visible {
  color: var(--lb-accent);
  border-color: var(--lb-accent-dim);
}

@media (min-width: 768px) {
  .page-faq .faq-contact {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-chip,
  .page-faq .faq-side__link,
  .page-faq .faq-backtop,
  .page-faq .faq-acc > summary {
    transition: none;
  }

  .page-faq .faq-chip:hover,
  .page-faq .faq-chip:focus-visible {
    transform: none;
  }
}