.page-faq {
  --faq-line: rgba(168, 225, 245, 0.16);
  --faq-gap: clamp(20px, 3.2vw, 40px);
  background: var(--ms-ink);
  color: var(--ms-frost);
  padding-bottom: clamp(40px, 6vw, 84px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--faq-line);
  background:
    radial-gradient(120% 100% at 88% 0%, rgba(58, 7, 16, 0.85), rgba(11, 13, 16, 0) 62%),
    linear-gradient(180deg, var(--ms-ink) 0%, var(--ms-ink-2) 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.55;
  background-image:
    repeating-linear-gradient(to right, var(--ms-line) 0 1px, transparent 1px 80px),
    repeating-linear-gradient(to bottom, var(--ms-line) 0 1px, transparent 1px 80px);
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  gap: var(--faq-gap);
  padding-top: clamp(24px, 5vw, 56px);
  padding-bottom: clamp(26px, 5vw, 60px);
}

.page-faq .faq-hero .ms-crumbs {
  margin-bottom: 16px;
  font-size: 12px;
}

.page-faq .faq-hero__title {
  font-family: var(--ms-font-display);
  font-weight: 800;
  font-size: clamp(30px, 6.6vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 14px 0 16px;
  text-wrap: balance;
  color: var(--ms-frost);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 34em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.75;
  color: var(--ms-mist);
}

.page-faq .faq-jump {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-jump__link {
  display: inline-block;
  padding: 7px 13px;
  border: 1px solid var(--ms-line-strong);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ms-ice-pale);
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  background: var(--ms-ice);
  border-color: var(--ms-ice);
  color: var(--ms-ink);
}

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
  border: 2px solid var(--ms-line-strong);
  border-radius: 4px;
  background: var(--ms-graphite);
  overflow: hidden;
}

.page-faq .faq-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(58, 7, 16, 0.72) 0%, rgba(11, 13, 16, 0) 46%, rgba(88, 200, 240, 0.34) 100%);
}

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

.page-faq .faq-hero__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 10px 14px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ms-frost);
  background: linear-gradient(to top, rgba(11, 13, 16, 0.9), rgba(11, 13, 16, 0));
}

/* ---------- 章节骨架 ---------- */
.page-faq .faq-sec {
  padding-block: clamp(36px, 6vw, 76px);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-sec--alt {
  background: var(--ms-ink-2);
}

.page-faq .faq-sec:last-of-type {
  border-bottom: 0;
}

.page-faq .faq-sec__head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-faq .faq-sec__num {
  font-family: var(--ms-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(32px, 5vw, 50px);
  line-height: 0.86;
  color: var(--ms-red);
  letter-spacing: -0.05em;
}

.page-faq .faq-sec__title {
  margin: 6px 0 0;
  font-family: var(--ms-font-display);
  font-size: clamp(21px, 3.2vw, 31px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--ms-frost);
}

.page-faq .faq-sec__intro {
  margin: 0 0 20px;
  max-width: 34em;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ms-mist);
}

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

.page-faq .faq-step {
  position: relative;
  padding: 20px 18px 22px;
  border: 1px solid var(--ms-line);
  border-radius: var(--ms-radius);
  background: linear-gradient(180deg, var(--ms-graphite) 0%, var(--ms-ink-2) 100%);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-faq .faq-step:hover,
.page-faq .faq-step:focus-within {
  transform: translateY(-4px);
  border-color: var(--ms-ice);
  box-shadow: 0 12px 28px rgba(11, 13, 16, 0.55);
}

.page-faq .faq-step__num {
  display: block;
  font-family: var(--ms-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(40px, 6vw, 56px);
  line-height: 1;
  letter-spacing: -0.05em;
  color: rgba(200, 16, 46, 0.86);
}

.page-faq .faq-step__title {
  margin: 12px 0 8px;
  font-size: 17px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--ms-frost);
}

.page-faq .faq-step__text {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ms-mist);
}

.page-faq .faq-step__link {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ms-ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(88, 200, 240, 0.42);
  padding-bottom: 2px;
}

.page-faq .faq-step__link:hover,
.page-faq .faq-step__link:focus-visible {
  color: var(--ms-frost);
  border-bottom-color: var(--ms-ice-pale);
}

/* ---------- 访问模式 ---------- */
.page-faq .faq-mode {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-mode__cards {
  display: grid;
  gap: 14px;
}

.page-faq .faq-mode__card {
  padding: 18px;
  border: 1px solid var(--ms-line);
  border-radius: var(--ms-radius);
  background: var(--ms-graphite);
}

.page-faq .faq-mode__card--pick {
  border-color: var(--ms-ice);
  box-shadow: inset 0 0 0 1px rgba(88, 200, 240, 0.22);
}

.page-faq .faq-mode__name {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: 0 0 12px;
  font-family: var(--ms-font-display);
  font-size: 19px;
  letter-spacing: 0.02em;
  color: var(--ms-frost);
}

.page-faq .faq-mode__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ms-mist);
}

.page-faq .faq-mode__list b {
  color: var(--ms-frost);
  font-weight: 600;
}

.page-faq .faq-mode__switch {
  margin: 4px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--ms-ice);
  font-size: 14px;
  line-height: 1.75;
  color: var(--ms-mist);
}

.page-faq .faq-mode__figure {
  margin: 0;
  border: 2px solid var(--ms-line-strong);
  border-radius: 4px;
  overflow: hidden;
  background: var(--ms-graphite);
  align-self: start;
}

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

.page-faq .faq-mode__figure figcaption {
  padding: 10px 12px;
  border-top: 1px solid var(--faq-line);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ms-mist);
}

/* ---------- 更新时点表 ---------- */
.page-faq .faq-filter {
  margin-bottom: 16px;
}

.page-faq .faq-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--ms-line);
  border-radius: var(--ms-radius);
  background: var(--ms-graphite);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 600px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.page-faq .faq-table__caption {
  padding: 12px 14px;
  text-align: left;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ms-mist);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-table th {
  text-align: left;
  padding: 12px 14px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ms-ice-pale);
  background: rgba(11, 13, 16, 0.62);
  border-bottom: 1px solid var(--ms-line-strong);
  white-space: nowrap;
}

.page-faq .faq-table td {
  padding: 14px;
  vertical-align: top;
  line-height: 1.7;
  color: var(--ms-mist);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .faq-table tbody tr {
  transition: background 0.2s ease;
}

.page-faq .faq-table tbody tr:hover {
  background: rgba(88, 200, 240, 0.06);
}

.page-faq .faq-table td:first-child {
  color: var(--ms-frost);
  font-weight: 600;
  white-space: nowrap;
}

.page-faq .faq-time {
  font-family: var(--ms-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.18em;
  color: var(--ms-ice-pale);
  letter-spacing: -0.02em;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-acc {
  display: grid;
  gap: 10px;
}

.page-faq .faq-acc__item {
  border: 1px solid var(--ms-line);
  border-radius: 12px;
  background: var(--ms-ink-2);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.page-faq .faq-acc__item:hover,
.page-faq .faq-acc__item[open] {
  border-color: var(--ms-line-strong);
}

.page-faq .faq-acc__q {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ms-frost);
}

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

.page-faq .faq-acc__q::after {
  content: "+";
  font-family: var(--ms-font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--ms-ice);
  transition: transform 0.22s ease;
}

.page-faq .faq-acc__item[open] .faq-acc__q::after {
  transform: rotate(45deg);
}

.page-faq .faq-acc__q:focus-visible {
  outline: 2px solid var(--ms-ice);
  outline-offset: -2px;
}

.page-faq .faq-acc__num {
  font-family: var(--ms-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--ms-red);
}

.page-faq .faq-acc__a {
  margin: 0;
  padding: 0 16px 16px 16px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ms-mist);
}

/* ---------- 反馈 ---------- */
.page-faq .faq-feedback {
  display: grid;
  gap: 14px;
}

.page-faq .faq-feedback__item {
  padding: 18px;
  border-left: 2px solid var(--ms-ice);
  border-radius: 0 var(--ms-radius) var(--ms-radius) 0;
  background: rgba(27, 33, 41, 0.66);
}

.page-faq .faq-feedback__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ms-ice-pale);
}

.page-faq .faq-feedback__text {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ms-mist);
}

.page-faq .faq-feedback__bar {
  margin-top: 22px;
  padding: 18px;
  border: 1px solid var(--faq-line);
  border-radius: var(--ms-radius);
  background: linear-gradient(100deg, rgba(58, 7, 16, 0.55), rgba(18, 22, 28, 0.9));
  display: grid;
  gap: 16px;
}

.page-faq .faq-feedback__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ms-frost);
}

.page-faq .faq-feedback__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 两列问答 ---------- */
.page-faq .faq-qa {
  columns: 1;
  column-gap: 28px;
}

.page-faq .faq-qa .faq-acc__item {
  display: block;
  margin-bottom: 10px;
  break-inside: avoid;
}

.page-faq .faq-qa .faq-acc__q {
  font-size: 14.5px;
}

.page-faq .faq-qa__more {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ms-mist);
}

.page-faq .faq-qa__more a {
  color: var(--ms-ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(88, 200, 240, 0.42);
}

.page-faq .faq-qa__more a:hover,
.page-faq .faq-qa__more a:focus-visible {
  color: var(--ms-frost);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-feedback {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 860px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
  }

  .page-faq .faq-step:not(:last-child)::after {
    content: "→";
    position: absolute;
    right: -22px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 17px;
    color: var(--ms-ice);
    opacity: 0.72;
  }

  .page-faq .faq-feedback {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .faq-feedback__bar {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 1.06fr 0.94fr;
    align-items: end;
  }

  .page-faq .faq-mode {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
  }

  .page-faq .faq-qa {
    columns: 2;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-sec__head {
    gap: 22px;
  }

  .page-faq .faq-hero__title {
    max-width: 15em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-step,
  .page-faq .faq-acc__q::after,
  .page-faq .faq-jump__link,
  .page-faq .faq-table tbody tr {
    transition: none;
  }

  .page-faq .faq-step:hover,
  .page-faq .faq-step:focus-within {
    transform: none;
  }
}