.page-faq {
  --faq-line: 1px solid var(--ink-600);
  --faq-gutter: 18px;
  padding-bottom: 96px;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 18px 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ink-200);
}
.page-faq .breadcrumb a {
  color: var(--ink-200);
  text-decoration: none;
  transition: color .18s var(--ease);
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--signal);
}
.page-faq .breadcrumb [aria-current="page"] {
  color: var(--paper);
}
.page-faq .breadcrumb-sep {
  color: var(--ink-400);
}

/* ---------- 框景首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  margin-top: 10px;
  padding: 28px 20px 24px;
  border: var(--faq-line);
  background-color: rgba(11, 19, 43, .55);
  background-image:
    linear-gradient(150deg, rgba(19, 30, 61, .92) 0%, rgba(5, 9, 26, .42) 66%),
    repeating-linear-gradient(90deg, rgba(30, 44, 85, .55) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(0deg, rgba(30, 44, 85, .38) 0 1px, transparent 1px 72px);
}
.page-faq .faq-hero::before,
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  width: 30px;
  height: 30px;
  border: 1px solid var(--signal);
  pointer-events: none;
}
.page-faq .faq-hero::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}
.page-faq .faq-hero::after {
  right: -1px;
  bottom: -1px;
  border-top: 0;
  border-left: 0;
}
.page-faq .faq-hero .eyebrow {
  margin: 0;
}
.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(30px, 7vw, 54px);
  line-height: 1.06;
  letter-spacing: .01em;
  color: var(--paper);
}
.page-faq .faq-hero .lede {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-200);
}
.page-faq .faq-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 24px;
  padding-top: 16px;
  border-top: var(--faq-line);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--ink-200);
}

/* ---------- 索引 + 正文骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  margin-top: 32px;
}
.page-faq .faq-index {
  position: sticky;
  top: var(--nav-h);
  z-index: 4;
  padding: 10px 0;
  background: var(--glass-strong);
  border-bottom: var(--faq-line);
  backdrop-filter: blur(10px);
}
.page-faq .faq-index-title {
  display: none;
  margin: 0;
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--ink-400);
}
.page-faq .faq-index-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  overflow-x: auto;
  list-style: none;
  scrollbar-width: none;
}
.page-faq .faq-index-list::-webkit-scrollbar {
  display: none;
}
.page-faq .faq-index-link {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--ink-600);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ink-200);
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}
.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  color: var(--signal);
  border-color: var(--signal);
  background: var(--signal-soft);
}

/* ---------- 章节公共件 ---------- */
.page-faq .faq-section + .faq-section,
.page-faq .faq-breath + .faq-section {
  margin-top: 56px;
  padding-top: 40px;
  border-top: var(--faq-line);
}
.page-faq .faq-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 18px;
}
.page-faq .faq-num {
  flex: none;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--signal);
}
.page-faq .faq-head .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(20px, 4.6vw, 30px);
  line-height: 1.28;
  letter-spacing: .01em;
  color: var(--paper);
}
.page-faq .faq-lede {
  margin: 0 0 18px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-200);
}
.page-faq .faq-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

/* ---------- 图片容器 ---------- */
.page-faq .faq-figure {
  margin: 0;
}
.page-faq .faq-figure--wide {
  margin-bottom: 24px;
}
.page-faq .media-frame {
  overflow: hidden;
  border: var(--faq-line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 78% 24%, rgba(255, 106, 43, .16), transparent 58%),
    linear-gradient(160deg, var(--ink-700), var(--ink-900));
}
.page-faq .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--ink-400);
}

/* ---------- 01 三步刻度条 ---------- */
.page-faq .step-rail {
  display: grid;
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .step-item {
  position: relative;
  padding: 4px 0 4px 18px;
  border-left: var(--faq-line);
}
.page-faq .step-item::before {
  content: "";
  position: absolute;
  top: 4px;
  left: -1px;
  width: 2px;
  height: 28px;
  background: var(--signal);
}
.page-faq .step-idx {
  display: block;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--verify);
}
.page-faq .step-title {
  margin: 8px 0 6px;
  font-size: 17px;
  font-weight: 600;
  color: var(--paper);
}
.page-faq .step-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-200);
}

/* ---------- 02 收窄条件 ---------- */
.page-faq .filter-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .filter-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 18px 0;
  border-top: var(--faq-line);
}
.page-faq .filter-row:last-child {
  border-bottom: var(--faq-line);
}
.page-faq .filter-key {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--signal);
}
.page-faq .filter-row p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-200);
}

/* ---------- 03 字段对照表 ---------- */
.page-faq .field-table-wrap {
  overflow: hidden;
  border: var(--faq-line);
  border-radius: var(--radius-lg);
  background: rgba(11, 19, 43, .72);
}
.page-faq .field-caption {
  padding: 14px 16px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ink-200);
  border-bottom: var(--faq-line);
}
.page-faq .field-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.page-faq .field-table thead th {
  padding: 10px 16px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .16em;
  color: var(--ink-400);
  background: rgba(5, 9, 26, .6);
  border-bottom: var(--faq-line);
}
.page-faq .field-table tbody tr:nth-child(odd) {
  background: rgba(19, 30, 61, .45);
}
.page-faq .field-table tbody th[scope="row"] {
  padding: 12px 16px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .02em;
  color: var(--paper);
  white-space: nowrap;
  vertical-align: top;
}
.page-faq .field-table tbody td {
  padding: 12px 16px;
  line-height: 1.72;
  color: var(--ink-200);
  vertical-align: top;
}

/* ---------- 中段留白 ---------- */
.page-faq .faq-breath {
  margin-top: 56px;
  padding: 44px 0 44px 20px;
  border-left: 3px solid var(--signal);
  background: linear-gradient(90deg, var(--signal-soft), transparent 62%);
}
.page-faq .faq-breath p {
  margin: 0;
  max-width: 34ch;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(19px, 4vw, 27px);
  line-height: 1.5;
  letter-spacing: .01em;
  color: var(--paper);
}

/* ---------- 04 状态标签 ---------- */
.page-faq .status-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .status-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: 20px 0;
  border-top: var(--faq-line);
}
.page-faq .status-row:last-child {
  border-bottom: var(--faq-line);
}
.page-faq .status-row h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 600;
  color: var(--paper);
}
.page-faq .status-row p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-200);
}
.page-faq .status-row .status {
  justify-self: start;
}

/* ---------- 05 导出与引用 ---------- */
.page-faq .cite-block p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-200);
}
.page-faq .cite-template {
  margin: 0 0 16px;
  padding: 16px 18px;
  overflow-x: auto;
  border: var(--faq-line);
  border-left: 3px solid var(--verify);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  background: rgba(5, 9, 26, .78);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.95;
  letter-spacing: .02em;
  color: var(--paper);
  white-space: pre;
  -webkit-user-select: all;
  user-select: all;
}
.page-faq .cite-template code {
  font: inherit;
  color: inherit;
}
.page-faq .cite-note {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--ink-400);
}
.page-faq .cite-note a {
  color: var(--ink-200);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-faq .cite-note a:hover,
.page-faq .cite-note a:focus-visible {
  color: var(--signal);
}
.page-faq .export-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .export-item {
  padding: 16px 18px;
  border: var(--faq-line);
  border-radius: var(--radius-lg);
  background: var(--glass);
}
.page-faq .export-key {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--verify);
}
.page-faq .export-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-200);
}

/* ---------- 06 更正提交 ---------- */
.page-faq .need-list {
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  counter-reset: need;
}
.page-faq .need-item {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-top: var(--faq-line);
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-200);
  counter-increment: need;
}
.page-faq .need-item::before {
  content: counter(need, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--signal);
  padding-top: 5px;
}
.page-faq .fix-contact {
  padding: 20px;
  border: var(--faq-line);
  border-radius: var(--radius-lg);
  background: var(--glass);
}
.page-faq .fix-line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--paper);
}
.page-faq .fix-label {
  min-width: 48px;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--ink-400);
}
.page-faq .fix-line a {
  color: var(--verify);
  text-decoration: none;
  word-break: break-all;
}
.page-faq .fix-line a:hover,
.page-faq .fix-line a:focus-visible {
  color: var(--signal);
}
.page-faq .fix-tip {
  margin: 10px 0 0;
  padding-top: 14px;
  border-top: var(--faq-line);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--ink-200);
}
.page-faq .fix-tip a {
  color: var(--paper);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-faq .fix-tip a:hover,
.page-faq .fix-tip a:focus-visible {
  color: var(--signal);
}

/* ---------- 07 折叠问答 ---------- */
.page-faq .qa-group {
  border-top: var(--faq-line);
}
.page-faq .qa-group:last-child {
  border-bottom: var(--faq-line);
}
.page-faq .qa-group[open] {
  background: linear-gradient(90deg, var(--signal-soft), transparent 46%);
  box-shadow: inset 3px 0 0 var(--signal);
}
.page-faq .qa-summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 8px;
  cursor: pointer;
  list-style: none;
}
.page-faq .qa-summary::-webkit-details-marker {
  display: none;
}
.page-faq .qa-summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--signal);
}
.page-faq .qa-group[open] > .qa-summary::after {
  content: "–";
}
.page-faq .qa-summary:focus-visible {
  outline: 1px solid var(--signal);
  outline-offset: -2px;
}
.page-faq .qa-tag {
  flex: none;
  padding: 3px 10px;
  border: 1px solid var(--ink-600);
  border-radius: var(--radius-pill);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--ink-200);
  background: rgba(5, 9, 26, .5);
}
.page-faq .qa-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: .01em;
  color: var(--paper);
}
.page-faq .qa-body {
  padding: 0 8px 22px;
}
.page-faq .qa-list {
  margin: 0;
}
.page-faq .qa-list dt {
  margin-top: 16px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--paper);
}
.page-faq .qa-list dt:first-child {
  margin-top: 0;
}
.page-faq .qa-list dd {
  margin: 6px 0 0;
  max-width: 68ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-200);
}

/* ---------- 720px 以上 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 40px 36px 34px;
  }
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 36px;
    align-items: start;
  }
  .page-faq .filter-row {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 26px;
    align-items: baseline;
  }
  .page-faq .status-row {
    grid-template-columns: 118px minmax(0, 1fr);
    gap: 28px;
    align-items: start;
  }
  .page-faq .qa-summary {
    padding: 20px 12px;
  }
  .page-faq .qa-body {
    padding: 0 12px 26px;
  }
  .page-faq .qa-title {
    font-size: 17px;
  }
}

/* ---------- 720px 以下：字段表转堆叠 ---------- */
@media (max-width: 719px) {
  .page-faq .field-table,
  .page-faq .field-table tbody,
  .page-faq .field-table tr,
  .page-faq .field-table th,
  .page-faq .field-table td {
    display: block;
    width: 100%;
  }
  .page-faq .field-table thead {
    display: none;
  }
  .page-faq .field-table tbody tr {
    padding: 14px 16px;
    border-bottom: var(--faq-line);
  }
  .page-faq .field-table tbody tr:nth-child(odd) {
    background: rgba(19, 30, 61, .45);
  }
  .page-faq .field-table tbody th[scope="row"] {
    padding: 0 0 8px;
    font-size: 14px;
    white-space: normal;
  }
  .page-faq .field-table tbody td {
    padding: 0 0 8px;
  }
  .page-faq .field-table tbody td::before {
    display: block;
    margin-bottom: 2px;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: .16em;
    color: var(--ink-400);
  }
  .page-faq .field-table tbody td:nth-of-type(1)::before {
    content: "含义";
  }
  .page-faq .field-table tbody td:nth-of-type(2)::before {
    content: "怎么读";
  }
  .page-faq .field-table tbody td:last-child {
    padding-bottom: 0;
  }
}

/* ---------- 1000px 以上：索引转为左侧固定列 ---------- */
@media (min-width: 1000px) {
  .page-faq .faq-shell {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
    margin-top: 44px;
  }
  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--nav-h) + 28px);
    z-index: 1;
    padding: 2px 0 2px 18px;
    border-bottom: 0;
    border-left: var(--faq-line);
    background: transparent;
    backdrop-filter: none;
  }
  .page-faq .faq-index-title {
    display: block;
    margin-bottom: 14px;
  }
  .page-faq .faq-index-list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .faq-index-list li + li {
    margin-top: 2px;
  }
  .page-faq .faq-index-link {
    display: block;
    padding: 7px 6px;
    border: 0;
    border-radius: 0;
    white-space: normal;
    color: var(--ink-400);
  }
  .page-faq .faq-index-link:hover,
  .page-faq .faq-index-link:focus-visible {
    background: transparent;
    color: var(--signal);
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index-link,
  .page-faq .breadcrumb a {
    transition: none;
  }
}