.page-faq {
  color: var(--paper);
  background: var(--ink-900);
  font-family: var(--ff-sans);
  padding-bottom: 72px;
  overflow-x: hidden;
}

.page-faq .crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding-top: 20px;
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-faq .crumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

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

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

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  display: grid;
  gap: 28px;
  padding: 28px 0 8px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -60px -24px auto -24px;
  height: 340px;
  background:
    linear-gradient(115deg, rgba(43, 240, 200, 0.12), rgba(164, 107, 255, 0.12) 55%, rgba(6, 11, 30, 0) 82%);
  pointer-events: none;
  z-index: 0;
}

.page-faq .faq-hero > * {
  position: relative;
  z-index: 1;
  min-width: 0;
}

.page-faq h1 {
  margin: 14px 0 0;
  font-size: clamp(34px, 8.5vw, 76px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.8;
}

.page-faq .faq-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-tags li {
  padding: 6px 12px;
  border: 1px solid var(--edge);
  border-radius: 999px;
  font-family: var(--ff-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--cyan-lt);
  background: var(--ink-800);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

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

.page-faq .faq-hero__fig .fig__frame {
  aspect-ratio: 3 / 2;
  border: 2px solid var(--edge);
  box-shadow: 0 8px 0 rgba(0, 0, 0, 0.45);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--ink-800);
}

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

.page-faq .fig__cap {
  margin-top: 10px;
  font-family: var(--ff-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

/* 章节骨架 */
.page-faq .chapter {
  padding-top: 56px;
}

.page-faq .chapter__head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  border-top: 1px solid var(--edge);
  padding-top: 24px;
}

.page-faq .chapter__num {
  font-family: var(--ff-mono);
  font-size: clamp(36px, 9vw, 56px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: 0.02em;
}

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

.page-faq .chapter__title {
  margin: 0;
  font-size: clamp(22px, 4.4vw, 34px);
  font-weight: 900;
  line-height: 1.15;
  color: var(--paper);
}

.page-faq .chapter__sub {
  margin: 10px 0 0;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* 01 三个最快解法 */
.page-faq .fixes {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.page-faq .fix {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px 14px;
  align-items: start;
  padding: 18px;
  border: 2px solid var(--edge);
  border-left: 6px solid var(--orange);
  border-radius: var(--r);
  background: var(--ink-800);
  box-shadow: 0 8px 0 rgba(0, 0, 0, 0.45);
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.page-faq .fix:hover,
.page-faq .fix:focus-within {
  border-color: var(--cyan);
  border-left-color: var(--violet);
  box-shadow: 0 4px 0 rgba(0, 0, 0, 0.45);
  transform: translateY(-2px);
}

.page-faq .fix__num {
  font-family: var(--ff-mono);
  font-size: 15px;
  letter-spacing: 0.14em;
  color: var(--orange);
  padding-top: 3px;
}

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

.page-faq .fix__q {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-faq .fix__a {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .fix__go {
  grid-column: 2;
  justify-self: start;
  font-family: var(--ff-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--edge);
  padding-bottom: 2px;
}

.page-faq .fix__go:hover {
  color: var(--cyan-lt);
  border-bottom-color: var(--cyan-lt);
}

/* 问答清单 */
.page-faq .qa {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .ask {
  border: 2px solid var(--edge);
  border-radius: var(--r);
  background: var(--ink-800);
  box-shadow: 0 8px 0 rgba(0, 0, 0, 0.4);
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.page-faq .ask:hover {
  border-color: var(--violet);
}

.page-faq .ask[open] {
  border-color: var(--cyan);
  box-shadow: 0 4px 0 rgba(0, 0, 0, 0.4);
}

.page-faq .ask__sum {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .ask__sum > * {
  min-width: 0;
}

.page-faq .ask__num {
  font-family: var(--ff-mono);
  font-size: clamp(24px, 5vw, 44px);
  font-weight: 700;
  line-height: 1;
  color: var(--ink-700);
  transition: color 0.18s ease;
}

.page-faq .ask[open] .ask__num,
.page-faq .ask:hover .ask__num {
  color: var(--cyan);
}

.page-faq .ask__q {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .ask__sign {
  width: 22px;
  height: 22px;
  position: relative;
  flex: none;
}

.page-faq .ask__sign::before,
.page-faq .ask__sign::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.page-faq .ask__sign::before {
  left: 0;
  top: 10px;
  width: 22px;
  height: 2px;
}

.page-faq .ask__sign::after {
  left: 10px;
  top: 0;
  width: 2px;
  height: 22px;
}

.page-faq .ask[open] .ask__sign::after {
  opacity: 0;
  transform: scaleY(0.2);
}

.page-faq .ask__body {
  display: grid;
  gap: 16px;
  padding: 0 16px 20px;
}

.page-faq .ask__body > * {
  min-width: 0;
}

.page-faq .ask[open] .ask__body {
  animation: faqDrop 0.2s ease-out both;
}

@keyframes faqDrop {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .ask__text {
  border-left: 2px solid var(--edge);
  padding-left: 14px;
}

.page-faq .ask[open] .ask__text {
  border-left-color: var(--cyan);
}

.page-faq .ask__text p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

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

.page-faq .ask__text strong {
  color: var(--paper);
  font-weight: 700;
}

.page-faq .ask__rel {
  border: 1px solid var(--edge);
  border-radius: var(--r);
  background: var(--ink-700);
  padding: 12px 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-content: flex-start;
}

.page-faq .ask__rel-t {
  flex: 0 0 100%;
  margin: 0;
  font-family: var(--ff-mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: var(--mist);
}

.page-faq .ask__rel a {
  display: inline-block;
  padding: 5px 11px;
  border: 1px solid var(--edge);
  border-radius: 999px;
  font-size: 12.5px;
  color: var(--cyan-lt);
  text-decoration: none;
  transition: border-color 0.18s ease, background 0.18s ease, color 0.18s ease;
}

.page-faq .ask__rel a:hover,
.page-faq .ask__rel a:focus-visible {
  border-color: var(--cyan);
  background: rgba(43, 240, 200, 0.1);
  color: var(--paper);
}

/* 06 客服 */
.page-faq .help {
  display: grid;
  gap: 22px;
  margin-top: 24px;
}

.page-faq .help__card {
  border: 2px solid var(--edge);
  border-radius: var(--r);
  background: var(--ink-800);
  box-shadow: 0 8px 0 rgba(0, 0, 0, 0.45);
  padding: 20px;
}

.page-faq .help__rows {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-faq .help__row {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px solid var(--edge);
}

.page-faq .help__row:first-child {
  padding-top: 0;
}

.page-faq .help__row dt {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--mist);
  padding-top: 4px;
}

.page-faq .help__row dd {
  margin: 0;
  font-family: var(--ff-mono);
  font-size: 15px;
  word-break: break-word;
  color: var(--paper);
}

.page-faq .help__row dd a {
  color: var(--cyan-lt);
  text-decoration: none;
  border-bottom: 1px solid var(--edge);
}

.page-faq .help__row dd a:hover {
  color: var(--paper);
  border-bottom-color: var(--cyan);
}

.page-faq .help__h {
  margin: 24px 0 12px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .help__steps {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 10px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .help__steps li::marker {
  font-family: var(--ff-mono);
  color: var(--orange);
}

.page-faq .help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

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

.page-faq .help__fig .fig__frame {
  aspect-ratio: 1 / 1;
  border: 2px solid var(--edge);
  box-shadow: 0 8px 0 rgba(0, 0, 0, 0.45);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--ink-800);
}

/* 焦点态 */
.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

/* 断点：平板以上 */
@media (min-width: 720px) {
  .page-faq .chapter__head {
    grid-template-columns: auto 1fr;
    gap: 24px;
    align-items: start;
  }

  .page-faq .fixes {
    gap: 16px;
  }

  .page-faq .fix {
    grid-template-columns: 46px 1fr auto;
    align-items: center;
    padding: 20px 22px;
  }

  .page-faq .fix__go {
    grid-column: 3;
    justify-self: end;
  }

  .page-faq .ask__sum {
    padding: 20px 22px;
    gap: 18px;
  }

  .page-faq .ask__body {
    padding: 0 22px 22px 22px;
  }

  .page-faq .help__card {
    padding: 24px 26px;
  }
}

/* 断点：桌面 */
@media (min-width: 980px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.62fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
    padding: 36px 0 12px;
  }

  .page-faq .faq-hero__fig {
    margin-top: 12px;
  }

  .page-faq .chapter {
    padding-top: 72px;
  }

  .page-faq .chapter__head {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 32px;
  }

  .page-faq .chapter__num {
    font-size: 88px;
    color: var(--ink-700);
    text-shadow: 0 1px 0 rgba(43, 240, 200, 0.35);
  }

  .page-faq .ask__body {
    grid-template-columns: minmax(0, 1fr) 224px;
    gap: 26px;
  }

  .page-faq .ask__rel {
    align-self: start;
  }

  .page-faq .help {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 32px;
    align-items: start;
  }
}

@media (min-width: 1120px) {
  .page-faq .fixes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: stretch;
  }

  .page-faq .fix {
    grid-template-columns: 1fr;
    align-content: start;
    gap: 10px;
  }

  .page-faq .fix__go {
    grid-column: 1;
    justify-self: start;
    margin-top: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .fix,
  .page-faq .ask,
  .page-faq .ask__num,
  .page-faq .ask__sign::before,
  .page-faq .ask__sign::after,
  .page-faq .ask__rel a {
    transition: none;
  }

  .page-faq .ask[open] .ask__body {
    animation: none;
  }
}