/* ===== 帮助中心 page-faq ===== */

.page-faq {
  padding: 16px 0 72px;
}

.page-faq .breadcrumb {
  margin-bottom: 18px;
}

/* ---------- 首屏框景 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: 30px 20px 24px;
  background:
    radial-gradient(120% 150% at 100% 0%, rgba(38, 50, 68, .9) 0%, rgba(11, 14, 19, 0) 62%),
    var(--carbon);
  border: 1px solid var(--line-soft);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: repeating-linear-gradient(90deg, var(--amber) 0 14px, transparent 14px 34px);
  opacity: .8;
}

.page-faq .faq-hero__title {
  margin: 14px 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 7vw, 46px);
  line-height: 1.26;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  max-width: 38em;
  margin: 0;
  color: rgba(244, 241, 234, .82);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 22px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line-soft);
  list-style: none;
  font-size: 13px;
  color: var(--mist);
}

.page-faq .faq-hero__meta .mono {
  margin-right: 7px;
  font-size: 14px;
  color: var(--gold);
}

/* ---------- 主体布局 ---------- */

.page-faq .faq-layout {
  display: grid;
  gap: 30px;
  margin-top: 36px;
}

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

/* ---------- 分类索引 ---------- */

.page-faq .faq-index {
  padding: 14px 14px 12px;
  background: var(--carbon);
  border: 1px solid var(--line-soft);
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--mist);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 2px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-index__link {
  display: inline-block;
  white-space: nowrap;
  padding: 7px 13px;
  border: 1px solid var(--line-soft);
  font-size: 13px;
  color: var(--mist);
  text-decoration: none;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}

.page-faq .faq-index__link:hover {
  color: var(--gold);
  border-color: rgba(217, 164, 65, .7);
}

.page-faq .faq-index__link.is-active {
  color: var(--gold);
  border-color: var(--amber);
  background: rgba(217, 164, 65, .12);
}

/* ---------- 区块骨架 ---------- */

.page-faq .faq-block {
  scroll-margin-top: 96px;
}

.page-faq .faq-block + .faq-block {
  margin-top: 52px;
  padding-top: 40px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 18px;
  margin-bottom: 14px;
}

.page-faq .faq-head__title {
  position: relative;
  margin: 0;
  padding-left: 20px;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(21px, 4.6vw, 27px);
  line-height: 1.4;
  color: var(--paper);
}

.page-faq .faq-head__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 12px;
  height: 2px;
  background: var(--amber);
}

.page-faq .faq-head__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mist);
}

.page-faq .faq-lede {
  max-width: 38em;
  margin: 0 0 22px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(244, 241, 234, .8);
}

.page-faq .faq-note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--amber);
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 三步引导 ---------- */

.page-faq .steps {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .steps__item {
  position: relative;
  padding: 18px 18px 20px;
  background: var(--carbon);
  border: 1px solid var(--line-soft);
  transition: border-color .2s ease, transform .2s ease;
}

.page-faq .steps__item:hover {
  border-color: var(--amber);
  transform: translateX(2px);
}

.page-faq .steps__num {
  display: inline-block;
  margin-bottom: 10px;
  padding: 2px 9px;
  border: 1px solid var(--line-soft);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-faq .steps__title {
  margin: 0 0 8px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .steps__body {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(244, 241, 234, .76);
}

/* ---------- 图片 ---------- */

.page-faq .figure {
  margin: 28px 0 0;
}

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

/* ---------- 问答折叠 ---------- */

.page-faq .qa-list {
  display: grid;
  gap: 2px;
  margin: 0;
}

.page-faq .qa {
  position: relative;
  background: rgba(21, 26, 33, .74);
  border: 1px solid var(--line-soft);
  transition: border-color .2s ease, background-color .2s ease;
}

.page-faq .qa::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--amber);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform .24s ease;
}

.page-faq .qa[open]::before {
  transform: scaleY(1);
}

.page-faq .qa:hover {
  border-color: rgba(217, 164, 65, .55);
}

.page-faq .qa__q {
  position: relative;
  padding: 16px 46px 16px 18px;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--paper);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__q::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--mist);
}

.page-faq .qa[open] .qa__q::after {
  content: "–";
  color: var(--gold);
}

.page-faq .qa__a {
  padding: 0 18px 18px;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(244, 241, 234, .78);
}

.page-faq .qa__a p {
  margin: 0 0 12px;
}

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

.page-faq .qa__tip {
  padding: 11px 13px;
  background: rgba(38, 50, 68, .72);
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 家庭对照（浅色区） ---------- */

.page-faq .faq-paper {
  margin-bottom: 22px;
  padding: 20px 16px;
  background: var(--paper);
  border: 1px solid var(--rice);
  color: var(--obsidian);
}

.page-faq .faq-table-cap {
  padding: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-align: left;
  color: rgba(11, 14, 19, .6);
}

.page-faq .table-scroll {
  overflow-x: auto;
}

.page-faq .data-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .data-table th,
.page-faq .data-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid rgba(11, 14, 19, .12);
}

.page-faq .data-table thead th {
  background: var(--rice);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--obsidian);
}

.page-faq .data-table tbody th {
  font-weight: 700;
  color: var(--obsidian);
}

.page-faq .data-table tbody td {
  color: rgba(11, 14, 19, .82);
}

.page-faq .data-table tbody tr:hover {
  background: rgba(239, 227, 200, .55);
}

.page-faq .faq-paper .link-underline {
  color: var(--obsidian);
}

/* ---------- 企业流程 ---------- */

.page-faq .process {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-soft);
}

.page-faq .process__item {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .process__num {
  padding-top: 4px;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--amber);
}

.page-faq .process__title {
  margin: 0 0 7px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .process__body {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(244, 241, 234, .76);
}

/* ---------- 兼容性清单 ---------- */

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

.page-faq .check-list__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  padding: 15px 16px;
  background: rgba(21, 26, 33, .6);
  border: 1px solid var(--line-soft);
  transition: border-color .2s ease;
}

.page-faq .check-list__item:hover {
  border-color: rgba(217, 164, 65, .55);
}

.page-faq .check-list__item .status {
  margin-top: 6px;
}

.page-faq .check-list__title {
  margin: 0 0 6px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .check-list__body {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(244, 241, 234, .74);
}

/* ---------- 联系方式 ---------- */

.page-faq .support {
  display: grid;
  gap: 0;
  padding: 8px 18px;
  background: var(--carbon);
  border: 1px solid var(--line-soft);
}

.page-faq .support__row {
  display: grid;
  gap: 5px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-soft);
}

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

.page-faq .support__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--mist);
}

.page-faq .support__value {
  font-size: 16px;
  line-height: 1.7;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .support__value.mono {
  color: var(--gold);
}

/* ---------- 响应式：中屏 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 40px 36px 32px;
  }

  .page-faq .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    border: 1px solid var(--line-soft);
  }

  .page-faq .steps__item {
    border: 0;
    border-right: 1px solid var(--line-soft);
  }

  .page-faq .steps__item:last-child {
    border-right: 0;
  }

  .page-faq .steps__item:hover {
    transform: none;
    background: rgba(21, 26, 33, .95);
  }

  .page-faq .support {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
  }

  .page-faq .support__row:nth-last-child(2) {
    border-bottom: 0;
  }
}

/* ---------- 响应式：桌面 ---------- */

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 216px;
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-main {
    grid-column: 1;
    grid-row: 1;
  }

  .page-faq .faq-index {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: 104px;
    padding: 18px 18px 16px;
    background: rgba(21, 26, 33, .82);
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
  }

  .page-faq .faq-index__link {
    display: block;
    padding: 8px 0 8px 13px;
    border: 0;
    border-left: 2px solid transparent;
    font-size: 13.5px;
  }

  .page-faq .faq-index__link:hover {
    border-left-color: rgba(217, 164, 65, .55);
    background: transparent;
  }

  .page-faq .faq-index__link.is-active {
    border-left-color: var(--amber);
    background: transparent;
  }

  .page-faq .faq-lede {
    font-size: 17px;
  }
}

/* ---------- 降低动效 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-faq .steps__item,
  .page-faq .qa,
  .page-faq .qa::before,
  .page-faq .qa__q::after,
  .page-faq .faq-index__link,
  .page-faq .check-list__item {
    transition: none;
  }

  .page-faq .steps__item:hover {
    transform: none;
  }
}