.page-faq {
  --fq-rail: 212px;
  --fq-gapx: clamp(1.6rem, 3.4vw, 3rem);
  --fq-gapy: clamp(2rem, 4.4vw, 3.2rem);
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  background-image: repeating-linear-gradient(
    to bottom,
    rgba(21, 33, 42, 0.028) 0,
    rgba(21, 33, 42, 0.028) 1px,
    transparent 1px,
    transparent 36px
  );
  overflow-x: hidden;
}

.page-faq img {
  max-width: 100%;
}

.page-faq section[id],
.page-faq .fq-faq-group[id] {
  scroll-margin-top: calc(var(--bar-h) + 26px);
}

/* ---------- 面包屑 ---------- */
.page-faq .crumbs {
  padding-top: clamp(0.9rem, 2.2vw, 1.5rem);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
}

.page-faq .crumbs__link {
  color: var(--ochre);
  text-decoration: none;
}

.page-faq .crumbs__link:hover,
.page-faq .crumbs__link:focus-visible {
  text-decoration: underline;
}

.page-faq .crumbs__sep {
  margin: 0 0.4rem;
  color: var(--ink-30);
}

.page-faq .crumbs__item {
  color: var(--ink-55);
}

/* ---------- 首屏 ---------- */
.page-faq .fq-hero {
  border-bottom: var(--line);
  background: linear-gradient(180deg, rgba(228, 212, 188, 0.62), rgba(243, 233, 215, 0) 78%);
}

.page-faq .fq-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--fq-gapx);
  padding-top: clamp(1.2rem, 3vw, 2rem);
  padding-bottom: clamp(2rem, 4.6vw, 3.4rem);
}

.page-faq .fq-kicker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.8rem;
  margin: 0 0 1rem;
}

.page-faq .fq-kicker__meta {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--ink-55);
}

.page-faq .fq-hero h1 {
  margin: 0 0 1.05rem;
  max-width: 19ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 6vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

.page-faq .fq-lede {
  max-width: 46ch;
  margin: 0 0 1.35rem;
  font-size: clamp(0.96rem, 1.4vw, 1.05rem);
  line-height: 1.85;
  color: var(--ink-70);
}

.page-faq .fq-lede--tight {
  margin-bottom: 1.3rem;
}

.page-faq .fq-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.page-faq .fq-hero__media .figure {
  margin: 0;
}

/* ---------- 栅格外壳 ---------- */
.page-faq .fq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--fq-gapy) var(--fq-gapx);
  padding-top: clamp(1.8rem, 4vw, 3rem);
  padding-bottom: clamp(2.4rem, 6vw, 4.4rem);
}

.page-faq .fq-rail__box {
  border: var(--line);
  background: var(--paper-2);
  padding: 0.9rem 0.75rem 1rem;
  box-shadow: 4px 4px 0 rgba(21, 33, 42, 0.12);
}

.page-faq .fq-rail__title {
  margin: 0 0 0.65rem;
  padding-left: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  color: var(--ochre);
}

.page-faq .fq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .fq-rail__link {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  align-items: baseline;
  gap: 0.3rem;
  padding: 0.42rem 0.4rem 0.42rem 0.5rem;
  border-left: 3px solid transparent;
  color: var(--ink-70);
  text-decoration: none;
  font-size: 0.85rem;
  line-height: 1.45;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .fq-rail__link:hover,
.page-faq .fq-rail__link:focus-visible {
  background: var(--paper);
  color: var(--ink);
}

.page-faq .fq-rail__link[aria-current="true"] {
  border-left-color: var(--lime);
  background: var(--paper);
  color: var(--ink);
}

.page-faq .fq-rail__num {
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--ochre);
}

.page-faq .fq-body {
  min-width: 0;
}

/* ---------- 章节 ---------- */
.page-faq .fq-sec {
  padding-top: clamp(1.5rem, 3vw, 2.2rem);
  border-top: var(--line);
}

.page-faq .fq-sec:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .fq-sec + .fq-sec {
  margin-top: clamp(2.2rem, 5vw, 3.6rem);
}

.page-faq .fq-sec__head {
  margin-bottom: 1.2rem;
}

.page-faq .fq-sec__num {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--ochre);
}

.page-faq .fq-sec h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.45rem, 3.4vw, 2.2rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.page-faq .fq-note {
  margin: 1rem 0 0;
  padding-left: 0.85rem;
  border-left: 3px solid var(--mist);
  font-size: 0.84rem;
  line-height: 1.8;
  color: var(--ink-55);
}

/* ---------- 三步 ---------- */
.page-faq .fq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .fq-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.7rem 1.1rem;
  padding: clamp(0.9rem, 2.4vw, 1.4rem) 0;
}

.page-faq .fq-step + .fq-step {
  border-top: 1px dashed var(--ink-30);
}

.page-faq .fq-step__num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.8rem, 4.6vw, 2.7rem);
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--ochre);
}

.page-faq .fq-step__num::after {
  content: "";
  display: block;
  width: 100%;
  height: 4px;
  margin-top: 0.35rem;
  background: var(--lime);
}

.page-faq .fq-step__title {
  margin: 0 0 0.45rem;
  font-size: clamp(1rem, 1.9vw, 1.14rem);
  font-weight: 700;
  line-height: 1.5;
}

.page-faq .fq-step__do {
  margin: 0 0 0.6rem;
  max-width: 56ch;
  font-size: 0.93rem;
  line-height: 1.85;
  color: var(--ink-70);
}

.page-faq .fq-step__done {
  display: block;
  margin: 0;
  max-width: 56ch;
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--ink-55);
}

.page-faq .fq-done-label {
  display: inline-block;
  margin-right: 0.4rem;
  padding: 0.1rem 0.42rem;
  background: var(--lime);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  border-radius: 2px;
}

/* ---------- 三种检索方式 ---------- */
.page-faq .fq-modes {
  list-style: none;
  margin: 0 0 1.2rem;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.9rem;
}

.page-faq .fq-mode {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1rem 0.95rem 1.05rem;
  border: var(--line);
  background: var(--paper);
  box-shadow: 4px 4px 0 var(--paper-2);
}

.page-faq .fq-mode__tag {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  color: var(--deep);
}

.page-faq .fq-mode h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .fq-mode p {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.8;
  color: var(--ink-70);
}

/* ---------- 索引码条 ---------- */
.page-faq .fq-code {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem 0.85rem;
  padding: 0.8rem 1rem;
  border: var(--line);
  background: var(--deep);
  color: var(--paper);
}

.page-faq .fq-code--inline {
  margin-top: 0.9rem;
  border-color: rgba(243, 233, 215, 0.35);
  background: rgba(243, 233, 215, 0.08);
}

.page-faq .fq-code__label {
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-faq .fq-code__value {
  padding: 0.15rem 0.5rem;
  border: 1px solid rgba(243, 233, 215, 0.3);
  background: rgba(243, 233, 215, 0.12);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 0.98rem;
  letter-spacing: 0.08em;
}

.page-faq .fq-copy {
  margin-left: auto;
  padding: 0.4rem 0.78rem;
  border: 1.5px solid var(--lime);
  background: transparent;
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .fq-copy:hover,
.page-faq .fq-copy:focus-visible {
  background: var(--lime);
  color: var(--ink);
}

/* ---------- 桌面环境 ---------- */
.page-faq .fq-envs {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.9rem 1.6rem;
}

.page-faq .fq-env {
  border-top: 1.5px solid var(--ink);
  padding-top: 0.55rem;
}

.page-faq .fq-env__sys {
  display: block;
  margin-bottom: 0.22rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: var(--ochre);
}

.page-faq .fq-env h3 {
  margin: 0 0 0.28rem;
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .fq-env p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--ink-70);
}

/* ---------- 换设备恢复 ---------- */
.page-faq .fq-restore {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.4rem;
}

.page-faq .fq-restore__list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: fqrs;
}

.page-faq .fq-restore__list li {
  position: relative;
  padding: 0 0 1.05rem 2.4rem;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--ink-70);
}

.page-faq .fq-restore__list li:last-child {
  padding-bottom: 0;
}

.page-faq .fq-restore__list li strong {
  color: var(--ink);
  font-weight: 700;
}

.page-faq .fq-restore__list li::before {
  counter-increment: fqrs;
  content: counter(fqrs, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.1rem;
  display: grid;
  place-items: center;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 50%;
  background: var(--gold);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
}

.page-faq .fq-restore .figure {
  margin: 0;
}

/* ---------- 问答 ---------- */
.page-faq .fq-jump {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0 0 1.4rem;
  padding: 0;
}

.page-faq .fq-jump a {
  display: inline-block;
  padding: 0.26rem 0.6rem;
  border: 1.5px solid var(--ink-30);
  color: var(--ink-70);
  font-family: var(--font-mono);
  font-size: 0.71rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .fq-jump a:hover,
.page-faq .fq-jump a:focus-visible {
  border-color: var(--ink);
  background: var(--lime);
  color: var(--ink);
}

.page-faq .fq-faq-group + .fq-faq-group {
  margin-top: 1.8rem;
}

.page-faq .fq-faq-group__title {
  margin: 0 0 0.45rem;
  padding-bottom: 0.35rem;
  border-bottom: 1.5px solid var(--ink-30);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--ochre);
}

.page-faq .fq-q {
  border-bottom: 1.5px solid var(--ink-30);
}

.page-faq .fq-q > summary {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.85rem 0.3rem 0.85rem 1.05rem;
  cursor: pointer;
  list-style: none;
  font-size: 0.94rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink);
  transition: color 0.18s var(--ease);
}

.page-faq .fq-q > summary::-webkit-details-marker {
  display: none;
}

.page-faq .fq-q > summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 4px;
  background: var(--gold);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.2s var(--ease);
}

.page-faq .fq-q[open] > summary::before {
  transform: scaleY(1);
}

.page-faq .fq-q > summary::after {
  content: "+";
  margin-left: auto;
  padding-left: 0.8rem;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 400;
  line-height: 1.35;
  color: var(--ochre);
}

.page-faq .fq-q[open] > summary::after {
  content: "−";
}

.page-faq .fq-q > summary:hover {
  color: var(--ochre);
}

.page-faq .fq-q__body {
  max-width: 62ch;
  padding: 0 0.4rem 1rem 1.05rem;
  font-size: 0.88rem;
  line-height: 1.9;
  color: var(--ink-70);
}

.page-faq .fq-q__body p {
  margin: 0 0 0.6rem;
}

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

/* ---------- 排查与联系 ---------- */
.page-faq .fq-flow {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.page-faq .fq-flow li {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: 0.7rem;
  align-items: baseline;
  font-size: 0.89rem;
  line-height: 1.8;
  color: var(--ink-70);
}

.page-faq .fq-flow__n {
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--deep);
  padding-bottom: 0.15rem;
  border-bottom: 2px solid var(--lime);
}

.page-faq .fq-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.1rem;
  padding: clamp(1.05rem, 3vw, 1.7rem);
  background: var(--deep);
  color: var(--paper);
}

.page-faq .fq-contact h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.12rem, 2.4vw, 1.5rem);
  line-height: 1.2;
  color: var(--paper);
}

.page-faq .fq-contact p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.85;
  color: var(--paper-70);
}

.page-faq .fq-contact__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.page-faq .fq-contact__list li {
  padding-top: 0.5rem;
  border-top: 1px solid rgba(243, 233, 215, 0.22);
  font-family: var(--font-mono);
  font-size: 0.79rem;
  line-height: 1.65;
  letter-spacing: 0.02em;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .fq-contact__list li span {
  display: block;
  margin-bottom: 0.12rem;
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-faq .fq-back {
  margin: 1.2rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}

.page-faq .fq-back a {
  color: var(--ochre);
  text-decoration: none;
  border-bottom: 2px solid var(--lime);
  padding-bottom: 0.1rem;
}

.page-faq .fq-back a:hover,
.page-faq .fq-back a:focus-visible {
  color: var(--ink);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .fq-envs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-faq .fq-modes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .fq-contact {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }
}

@media (min-width: 760px) {
  .page-faq .fq-restore {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
    align-items: start;
    gap: clamp(1.4rem, 3vw, 2.4rem);
  }
}

@media (min-width: 880px) {
  .page-faq .fq-hero__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: end;
    gap: clamp(1.8rem, 4vw, 3.4rem);
  }
}

@media (min-width: 940px) {
  .page-faq .fq-shell {
    grid-template-columns: var(--fq-rail) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .fq-rail {
    position: sticky;
    top: calc(var(--bar-h) + 18px);
  }
}

@media (max-width: 520px) {
  .page-faq .fq-code {
    align-items: flex-start;
  }

  .page-faq .fq-copy {
    margin-left: 0;
    width: 100%;
    text-align: center;
  }

  .page-faq .fq-step {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.4rem;
  }

  .page-faq .fq-step__num {
    font-size: 1.6rem;
  }

  .page-faq .fq-step__num::after {
    width: 2.4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}