.page-faq {
  --faq-pad: clamp(44px, 6vw, 76px);
  --faq-qline: rgb(199 210 205 / .16);
  display: block;
  color: var(--silver);
  padding-bottom: clamp(56px, 8vw, 104px);
}

/* ---------- 面包屑 ---------- */
.page-faq .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 26px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--silver-dim);
}

.page-faq .crumbs a {
  color: var(--silver-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .crumbs a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.page-faq .crumbs__sep {
  color: var(--line-strong);
}

.page-faq .crumbs [aria-current="page"] {
  color: var(--silver);
}

/* ---------- 通用区块头 ---------- */
.page-faq .faq-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
}

.page-faq .faq-kicker::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
}

.page-faq .faq-sechead {
  margin-bottom: clamp(30px, 4vw, 44px);
}

.page-faq .faq-sechead h2 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: 82%;
  font-size: clamp(26px, 5.4vw, 46px);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-sechead__note {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--silver-dim);
}

.page-faq a:not(.crumbs a) {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgb(200 255 61 / .38);
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-faq a:not(.crumbs a):hover {
  border-bottom-color: var(--accent);
  background: var(--accent-soft);
}

/* ---------- 首屏拼贴 ---------- */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  padding-top: 34px;
  padding-bottom: var(--faq-pad);
}

.page-faq .faq-hero__main {
  position: relative;
  padding-left: 18px;
  border-left: 2px solid var(--accent);
}

.page-faq .faq-hero h1 {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: 80%;
  font-size: clamp(30px, 8vw, 62px);
  line-height: 1.04;
  letter-spacing: -.026em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 22px 0 0;
  max-width: 60ch;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  color: var(--silver);
}

/* ---------- 状态摘要卡 ---------- */
.page-faq .faq-brief {
  align-self: start;
  border: 1px solid var(--line-strong);
  background: var(--ink-800);
  box-shadow: 10px 10px 0 rgb(0 0 0 / .4);
}

.page-faq .faq-brief__head {
  margin: 0;
  padding: 12px 16px;
  background: var(--paper);
  color: var(--ink-900);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.page-faq .faq-brief__list {
  margin: 0;
}

.page-faq .faq-brief__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 13px 16px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-brief__row:first-child {
  border-top: 0;
}

.page-faq .faq-brief__row dt {
  font-size: 14px;
  color: var(--silver-dim);
}

.page-faq .faq-brief__row dd {
  margin: 0;
  font-family: var(--font-data);
  font-size: 14px;
  color: var(--paper);
  white-space: nowrap;
}

/* ---------- 三步核对路径 ---------- */
.page-faq .faq-steps-section {
  position: relative;
  margin-bottom: var(--faq-pad);
  padding-block: calc(var(--faq-pad) - 10px);
  background:
    linear-gradient(174deg, var(--ink-800) 0%, var(--ink-900) 78%),
    var(--ink-800);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-steps-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgb(199 210 205 / .045) 1px, transparent 1px),
    linear-gradient(90deg, rgb(199 210 205 / .045) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
}

.page-faq .faq-steps-section > .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.page-faq .faq-steps__list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faq-step;
}

.page-faq .faq-step {
  position: relative;
  padding: 26px 0 24px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-step:last-child {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-step__num {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: 75%;
  font-size: clamp(46px, 12vw, 82px);
  line-height: .78;
  letter-spacing: -.05em;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--accent);
}

@supports not ((-webkit-text-stroke: 1px currentColor)) {
  .page-faq .faq-step__num {
    color: var(--accent);
  }
}

.page-faq .faq-step h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: 84%;
  font-size: 21px;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-step p {
  margin: 0;
  max-width: 52ch;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--silver);
}

.page-faq .faq-steps__fig {
  margin: 0;
}

/* ---------- 图片通用 ---------- */
.page-faq .figure__media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background: var(--ink-800);
}

.page-faq .figure__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.55) contrast(1.12) brightness(.86);
}

.page-faq .faq-steps__fig img {
  aspect-ratio: 3 / 2;
}

.page-faq .faq-indexes__fig img {
  aspect-ratio: 10 / 7;
}

.page-faq .figure__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgb(200 255 61 / .07) 1px, transparent 1px),
    linear-gradient(90deg, rgb(200 255 61 / .07) 1px, transparent 1px);
  background-size: 44px 44px;
  mix-blend-mode: screen;
}

.page-faq .figure__cap {
  margin-top: 12px;
  max-width: 46ch;
  font-size: 13px;
  line-height: 1.65;
  color: var(--silver-dim);
}

/* ---------- 三条索引 ---------- */
.page-faq .faq-indexes-section {
  margin-bottom: var(--faq-pad);
}

.page-faq .faq-indexes__fig {
  margin: 0 0 34px;
}

.page-faq .faq-branch {
  margin: 0 0 28px;
  color: var(--line-strong);
}

.page-faq .faq-branch svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-idx {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-idx__item {
  position: relative;
  padding: 20px 18px 22px;
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-left: 3px solid var(--lime);
}

.page-faq .faq-idx__item--team {
  border-left-color: var(--cyan);
}

.page-faq .faq-idx__item--ref {
  border-left-color: var(--violet);
}

.page-faq .faq-idx__item::after {
  content: "";
  position: absolute;
  right: 10px;
  bottom: 10px;
  width: 26px;
  height: 26px;
  border-right: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  pointer-events: none;
}

.page-faq .faq-idx__tag {
  margin: 0 0 10px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--silver-dim);
}

.page-faq .faq-idx__item h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: 84%;
  font-size: 22px;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-idx__body {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--silver);
}

.page-faq .faq-idx__miss {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 13.5px;
  line-height: 1.66;
  color: var(--silver-dim);
}

.page-faq .faq-idx__miss span {
  display: inline-block;
  margin-right: 6px;
  padding: 2px 6px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--ink-900);
  background: var(--silver-dim);
}

/* ---------- 问答折叠栈 ---------- */
.page-faq .faq-qa-section {
  margin-bottom: var(--faq-pad);
}

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

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
  border-left: 2px solid transparent;
  padding-left: 14px;
  transition: background-color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-item--check {
  border-left-color: rgb(200 255 61 / .55);
}

.page-faq .faq-item--caliber {
  border-left-color: rgb(47 224 200 / .55);
}

.page-faq .faq-item--errata {
  border-left-color: rgb(255 92 36 / .55);
}

.page-faq .faq-item[open] {
  background: var(--ink-800);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 17px 4px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body);
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

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

.page-faq .faq-item__q::after {
  content: "+";
  flex: 0 0 auto;
  margin-left: auto;
  font-family: var(--font-data);
  font-size: 19px;
  line-height: 1.3;
  color: var(--accent);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "−";
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.page-faq .faq-item__a {
  max-width: 68ch;
  padding: 0 4px 22px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--silver);
}

.page-faq .faq-item__a p {
  margin: 0;
}

@keyframes faq-open {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faq-open .22s var(--ease) both;
}

/* ---------- 术语表 ---------- */
.page-faq .faq-glossary-section {
  margin-bottom: var(--faq-pad);
}

.page-faq .faq-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
}

.page-faq .faq-table__cap {
  caption-side: top;
  padding-bottom: 12px;
  text-align: left;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--silver-dim);
}

.page-faq .faq-table th {
  text-align: left;
  vertical-align: top;
}

.page-faq .faq-table thead th {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line-strong);
  background: var(--ink-900);
  font-family: var(--font-data);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--silver-dim);
  white-space: nowrap;
}

.page-faq .faq-table tbody th {
  padding: 15px 14px;
  font-family: var(--font-data);
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: .02em;
  color: var(--accent);
  white-space: nowrap;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-table td {
  padding: 15px 14px;
  border-bottom: 1px solid var(--line);
  line-height: 1.66;
  color: var(--silver);
}

.page-faq .faq-table td:last-child {
  color: var(--silver-dim);
}

.page-faq .faq-table tbody tr:nth-child(odd) {
  background: var(--ink-800);
}

.page-faq .faq-table tbody tr:nth-child(even) {
  background: var(--ink-700);
}

.page-faq .faq-table tbody tr:hover {
  background: rgb(22 51 43 / .9);
}

/* ---------- 勘误提交 ---------- */
.page-faq .faq-errata-section {
  margin-bottom: 0;
}

.page-faq .faq-errata {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-faq .faq-errata__intro h2 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: 82%;
  font-size: clamp(26px, 5.4vw, 44px);
  line-height: 1.07;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-errata__intro p {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: 15.5px;
  line-height: 1.76;
  color: var(--silver);
}

.page-faq .faq-errata__panel {
  position: relative;
  padding: 26px 22px 28px;
  background: var(--paper);
  color: var(--ink-900);
  box-shadow: 8px 8px 0 var(--ink-700), 16px 16px 0 rgb(10 19 16 / .62);
}

.page-faq .faq-errata__panel h3 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: 84%;
  font-size: 19px;
  letter-spacing: .01em;
  color: var(--ink-900);
}

.page-faq .faq-errata__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgb(10 19 16 / .18);
}

.page-faq .faq-errata__list li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid rgb(10 19 16 / .18);
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--ink-900);
}

.page-faq .faq-errata__no {
  flex: 0 0 auto;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--lava);
}

.page-faq .faq-errata__contact {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 2px solid var(--ink-900);
}

.page-faq .faq-errata__label {
  margin: 0 0 6px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgb(10 19 16 / .6);
}

.page-faq .faq-errata__mail {
  margin: 0 0 10px;
  font-family: var(--font-data);
  font-size: 15px;
  word-break: break-all;
  color: var(--ink-900);
}

.page-faq .faq-errata__hours {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.66;
  color: rgb(10 19 16 / .72);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-idx {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .faq-idx__item:nth-child(2) {
    transform: translateY(18px);
  }

  .page-faq .faq-errata__panel {
    padding: 32px 30px 34px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 56px;
    align-items: start;
    padding-top: 52px;
  }

  .page-faq .faq-steps {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-steps__fig {
    position: sticky;
    top: 32px;
  }

  .page-faq .faq-errata {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-indexes__fig {
    margin-bottom: 40px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-idx {
    gap: 24px;
  }

  .page-faq .faq-indexes__fig .figure__media {
    max-width: 900px;
  }

  .page-faq .faq-branch {
    margin-bottom: 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-item__a {
    animation: none;
  }

  .page-faq .faq-idx__item:nth-child(2) {
    transform: none;
  }

  .page-faq .faq-steps__fig {
    position: static;
  }
}